CN108242313B - Epoxy pull ring, die and method for manufacturing epoxy pull ring - Google Patents
Epoxy pull ring, die and method for manufacturing epoxy pull ring Download PDFInfo
- Publication number
- CN108242313B CN108242313B CN201810011689.6A CN201810011689A CN108242313B CN 108242313 B CN108242313 B CN 108242313B CN 201810011689 A CN201810011689 A CN 201810011689A CN 108242313 B CN108242313 B CN 108242313B
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- 239000004593 Epoxy Substances 0.000 title claims abstract description 96
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000004744 fabric Substances 0.000 claims abstract description 55
- 239000003365 glass fiber Substances 0.000 claims abstract description 52
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000004804 winding Methods 0.000 claims description 12
- 239000011152 fibreglass Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 7
- 238000001723 curing Methods 0.000 description 20
- 238000010586 diagram Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000002595 magnetic resonance imaging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Insulating Bodies (AREA)
Abstract
The utility model discloses an epoxy pull ring, a die and a method for manufacturing the epoxy pull ring, wherein the epoxy pull ring comprises a first ring body, a second ring body which is arranged opposite to the first ring body and is not contacted with the first ring body, and an annular insulating belt fixedly sleeved on the first ring body and the second ring body; a first notch and a second notch for accommodating the insulating tape are respectively arranged on the circumferential side wall of the first ring body and the circumferential side wall of the second ring body; the insulating tape is pre-impregnated epoxy glass fiber cloth which is cured by heating. The epoxy pull ring provided by the utility model has the characteristics of high tensile strength, low heat leakage and the like by adopting the pre-impregnated epoxy glass fiber cloth after heating and curing as an insulating and tensile medium material, and can not influence the stability of a magnet system in a magnet system with high requirements on low-temperature conditions, thus being particularly suitable for a large-scale and high-precision superconducting magnet system.
Description
Technical Field
The utility model relates to the field of superconducting magnet application, in particular to an epoxy pull ring, a die for manufacturing the epoxy pull ring and a method for manufacturing the epoxy pull ring.
Background
With rapid development of superconducting technology, superconducting magnet technology has been widely used in fields of transportation, industry, biomedical science, aerospace, and military industry, such as MRI (magnetic resonance imaging), transformers, power transmission, magnetic levitation, high-energy accelerators, nuclear fusion devices, and the like. The proper operation of these items or devices requires high magnetic fields, which can only be accomplished with superconducting magnets. Therefore, as superconducting magnets are increasingly used, how to ensure the stability of the superconducting magnet system during operation and transportation becomes one of the key technologies for designing superconducting magnets.
In a superconducting magnet system, a pull ring is one of important components for ensuring system stability, and is mainly used for fixing components such as a superconducting magnet, a cold shield, a liquid helium container and the like. During the operation of the superconducting magnet, the pull ring is subjected to dead weight, pretightening force and cold contraction force of the magnet. During transportation, dynamic loads from different directions are received. Therefore, in order to ensure the stability and safety of the operation of the superconducting magnet system, the pull ring needs to have sufficient strength. In addition, the superconducting magnet system needs to be kept in normal operation in a low-temperature environment, so that the required temperature is reached as soon as possible, and the leakage heat of the pull ring should be as small as possible in order to reduce the operation cost. Most of pull rings adopted in the existing superconducting magnet system are common pull rings, and have the characteristics of simple structure and convenient processing, but often have the defects of insufficient flexibility, poor tensile strength, high heat leakage and the like, and when the pull rings are applied to a magnet system with heavy magnet quality and high low-temperature condition requirement, the effect is often unsatisfactory, and even the stability of the magnet system is greatly influenced. In view of this, it is necessary to provide a tab with high tensile strength and low heat leakage.
Disclosure of Invention
The first technical problem to be solved by the utility model is to provide an epoxy pull ring which has high tensile strength and low heat leakage and is suitable for a superconducting magnet system.
The second technical problem to be solved by the utility model is to provide a die for manufacturing the epoxy pull ring which has high tensile strength and low heat leakage and is suitable for a superconducting magnet system.
The third technical problem to be solved by the utility model is to provide a method for manufacturing the epoxy pull ring by using the die.
In order to solve the first technical problem, the utility model adopts the following technical scheme:
an epoxy pull ring comprises a first ring body, a second ring body which is arranged opposite to the first ring body and is not in contact with the first ring body, and an annular insulating belt fixedly sleeved on the first ring body and the second ring body; a first notch and a second notch for accommodating the insulating tape are respectively arranged on the circumferential side wall of the first ring body and the circumferential side wall of the second ring body; the insulating tape is pre-impregnated epoxy glass fiber cloth which is cured by heating.
In order to solve the second technical problem, the utility model adopts the following technical scheme:
a mold for making the epoxy tab described above, the mold comprising:
a base;
the first rod body and the second rod body are arranged at two ends of the base and are respectively sleeved into the first ring body and the second ring body; and
The positioning piece is arranged on the base and used for positioning the insulating tape connected with the first ring body and the second ring body when the epoxy pull ring is manufactured, and the positioning piece is positioned between the first rod body and the second rod body.
Further, the die further comprises a first clamping plate and a second clamping plate which are respectively positioned at two sides of the positioning piece. The first clamping plate and the second clamping plate are used for clamping and fixing the wound insulating tape in cooperation with the side walls on two sides of the locating piece body when the insulating tape is manufactured.
Further, the two ends of the positioning piece are respectively provided with a notch matched and corresponding to the first ring body and the second ring body.
Further, through grooves for accommodating and positioning the insulating tape are respectively arranged on the side walls of the two sides of the positioning piece body.
Further, the positioning member includes:
a bottom plate positioned at the bottom;
the fixing blocks are arranged in the middle of the bottom plate and used for supporting and positioning the two side parts in the insulating tape; and
And the top plate is arranged on the upper surface of the fixed block and matched with the bottom plate.
Further, through grooves for accommodating and positioning the insulating tape are respectively arranged on the side walls of the two sides of the positioning piece body; the positioning member includes relatively detachable upper and lower members.
Further, the depth of the through groove is equal to the depth of the notch arranged on the ring body.
In order to solve the third technical problem, the utility model adopts the following technical scheme:
a method for manufacturing an epoxy pull ring by using the die comprises the following steps:
s1, sleeving a first ring body and a second ring body on a first rod body and a second rod body respectively, wherein the first ring body and the second ring body are positioned at two ends of the positioning piece and aligned with the positioning piece;
s2, winding pre-impregnated epoxy glass fiber cloth outside the first ring body and the second ring body; the two ends of the pre-impregnated epoxy glass fiber cloth are respectively positioned in the first notch and the second notch, and the two side parts of the pre-impregnated epoxy glass fiber cloth are supported and positioned through the side walls at the two sides of the positioning piece body;
s3, heating and curing the wound pre-impregnated epoxy glass fiber cloth;
and S4, after the heating and curing are completed, removing the die to obtain the epoxy pull ring formed by the first ring body, the second ring body and the pre-impregnated epoxy glass fiber cloth.
Further, the heating and curing conditions of the pre-impregnated epoxy glass fiber cloth are as follows: curing at 80 degrees celsius for 12 hours.
The beneficial effects of the utility model are as follows:
compared with the prior art, the epoxy pull ring provided by the utility model adopts the pre-impregnated epoxy glass fiber cloth after heating and curing as the insulating and tensile medium material, and the pre-impregnated epoxy glass fiber cloth is a flexible material before heating and curing, so that the pre-impregnated epoxy glass fiber cloth can be wound into any required shape according to the process requirement, which means that the shape of the pull ring can be designed according to the specific requirement of a magnet, and the design has high flexibility. In addition, the pre-impregnated epoxy glass fiber cloth after heating and curing has the characteristics of high tensile strength, low heat leakage and the like, and can not influence the stability of a magnet system in a magnet system with high requirements on low-temperature conditions, thus being particularly suitable for a large-scale high-precision superconducting magnet system.
According to another aspect of the utility model, the manufacturing die and the manufacturing method provided by the utility model have the advantages that the manufacturing process of the epoxy pull ring is simple, the epoxy pull ring is easy to handle, and the epoxy pull ring structure is suitable for mass production.
Drawings
The following describes the embodiments of the present utility model in further detail with reference to the drawings.
Fig. 1 is a schematic structural diagram of an epoxy tab provided by the present utility model.
Fig. 2 is an assembly view of a mold provided by the present utility model.
Fig. 3 is a schematic perspective view of a mold according to the present utility model.
FIG. 4 is a schematic diagram showing a second perspective view of the mold according to the present utility model.
FIG. 5 is a schematic illustration of the fit of the tab and the mold of the present utility model.
FIG. 6 is a second schematic view of the cooperation of the tab and the mold according to the present utility model.
FIG. 7 is a third schematic view of the fit of the tab and the mold according to the present utility model.
FIG. 8 is a diagram showing the cooperation of the tab and the mold according to the present utility model.
Detailed Description
In order to more clearly illustrate the present utility model, the present utility model will be further described with reference to preferred embodiments and the accompanying drawings. Like parts in the drawings are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this utility model is not limited to the details given herein.
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
In order to more clearly illustrate the present utility model, the present utility model will be further described with reference to preferred embodiments and the accompanying drawings. Like parts in the drawings are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this utility model is not limited to the details given herein.
Example 1:
as shown in fig. 1, the present embodiment provides an epoxy pull ring, which includes a first ring body 1, a second ring body 2 disposed opposite to the first ring body 1 and not contacting with the first ring body 1, and an annular insulating tape 3 fixedly sleeved on the first ring body 1 and the second ring body 2; a first notch 11 and a second notch 21 for accommodating an insulating tape are respectively arranged on the circumferential side wall of the first ring body 1 and the circumferential side wall of the second ring body 2; the insulating tape 3 is a pre-impregnated epoxy glass fiber cloth which is cured by heating.
Compared with the prior art, the epoxy pull ring provided by the utility model adopts the pre-impregnated epoxy glass fiber cloth after heating and curing as an insulating and tensile medium material, is formed by impregnating epoxy glue with glass fiber cloth, has no tensile strength before curing by adding a curing agent, and can be wound into any required shape according to the process requirement. After the curing agent is added for curing, the formed epoxy glass fiber reinforced plastic has the characteristics of high tensile strength and low heat leakage. Referring to table one, the performance of the common material is compared with that of the pre-impregnated epoxy glass fiber cloth after heat curing in the utility model, wherein the tensile strength of the material is represented by the tensile limit, and the heat leakage is represented by the average heat conductivity coefficient.
Table one: performance comparison of common materials and pre-impregnated epoxy glass fiber cloth after heating and curing
It can be seen from the above table that the ratio of the average thermal conductivity to the tensile limit of the heat-cured pre-impregnated epoxy fiberglass cloth is highest, which means that the same tensile strength is obtained, and the heat leakage generated by the heat-cured pre-impregnated epoxy fiberglass cloth is minimal, which is required for superconducting magnet systems operating at very low temperatures.
Example 2:
referring to fig. 2 to 8, the present embodiment provides a mold for manufacturing the epoxy tab, the mold including a base 4; the first rod body 41 and the second rod body 42 are arranged at two ends of the base 4 and are used for being sleeved into the first ring body 1 and the second ring body 2 respectively; and a positioning member 5 provided on the base 4 for positioning the insulating tape when the epoxy tab is made, the positioning member 5 being located between the first rod 41 and the second rod 42. The positioning piece 5 is used for winding an insulating belt 3 outside the first ring body 1 and the second ring body 2 after the positions of the first ring body 1 and the second ring body 2 are relatively fixed, and the insulating belt 3 provides a support carrier for the pre-impregnated epoxy glass fiber cloth.
After the pre-impregnated epoxy glass fiber cloth is wound, a layer of polyimide film is coated on the side of the wound mould, and the pre-impregnated epoxy glass fiber cloth and the side wall of the positioning piece 5 are clamped relatively from the side, so that the pre-impregnated epoxy glass fiber cloth can be heated and cured again. It is further preferred that the mould further comprises a first clamping plate 6 and a second clamping plate 7 on both sides of the positioning member 5, respectively. The first clamping plate 6 and the second clamping plate 7 are used for clamping and fixing the wound insulating tape 3 by matching with the side walls on two sides of the locating piece 5 when the insulating tape 3 is manufactured.
In order to match the external structures of the first ring body 1 and the second ring body 2, and avoid the situation that the pre-impregnated epoxy glass fiber cloth is dislocated, distorted or uneven in surface after being heated and solidified in the winding process, it is further preferable that the two ends of the positioning piece 5 are respectively provided with a notch 51 corresponding to the first ring body 1 and the second ring body 2.
In addition, in order to facilitate the tensioning of the pre-impregnated epoxy glass fiber cloth at any time in the winding process, the pre-impregnated epoxy glass fiber cloth is tightly wound as much as possible; further preferably, the side walls of the two sides of the positioning piece 5 are respectively provided with a through groove 52 for accommodating and positioning the insulating tape 3.
The positioning member 5 in the present utility model specifically includes a bottom plate 53 at the bottom; the fixing blocks 54 are arranged in the middle of the bottom plate 53 and used for supporting and positioning the two inner side parts of the insulating tape 3; and a top plate 55 provided on the upper surface of the fixing block 54 and corresponding to the bottom plate 53.
The positioning member 5 provided by the present utility model includes an upper member and a lower member that are relatively detachable. In the present embodiment, as shown in the drawing, the top plate 55 and the fixing block 54 together form an upper member of the positioning member 5, and the bottom plate 53 is a lower member of the positioning member 5, and this is effective in that, when the epoxy tab is manufactured, the upper member and the lower member can be relatively detached from the positioning member 5, thereby facilitating the removal of the manufactured epoxy tab. In the present utility model, the top plate 55 and the fixing block 54 together form an upper member of the positioning member 5, and the bottom plate 53 is a lower member of the positioning member 5, which is only a preferred embodiment, and is not limited thereto. Based on the utility model, the top plate can be used as the upper component of the positioning piece, and the bottom plate and the fixed block can form the lower component of the positioning piece. In addition, the locating piece in the utility model can also adopt a structure form that three parts are separated and independent and are assembled and fixed to form the locating piece, for example, the top plate is an upper component of the locating piece, the fixed block is a middle component of the locating piece, the bottom plate is a lower component of the locating piece, and the locating piece is formed by fixedly assembling the top plate, the fixed block and the bottom plate. Based on the general understanding of those skilled in the art, corresponding selections or further modifications may be made depending on the actual situation.
Further preferably, the depth of the through groove 52 provided on the side walls of the two sides of the positioning member 5 is equal to the depth of the notch provided on the ring body. The depth of the through groove is controlled to be equal to that of the notch, so that the pre-impregnated epoxy glass fiber cloth can be tightly wound on the positioning piece, the thickness is uniform, gaps are not reserved between the pre-impregnated epoxy glass fiber cloth layers, the subsequent heating and curing are facilitated, and the manufactured epoxy pull ring structure is more regular.
In particular, in the present embodiment, the space formed between the side walls of the fixing block 54 and the side edges of the bottom plate 53 and the side edges of the top plate 55 is a through slot 52 for receiving and positioning the insulating tape when the insulating tape is wound, and preferably, the distance between the side edges of the bottom plate 53 and the side walls of the fixing block 54 is equal to the depth of the notch provided in the ring body.
In addition, as a preferred embodiment, the mold may further comprise a base 8 located below the base and combined and fixed with the base, the base includes a rotating shaft 9, and when the epoxy pull ring is manufactured by using the rotating shaft 9, the mold is convenient to rotate around the axis of the mold, and further, the first ring body and the second ring body are wound with pre-impregnated epoxy glass fiber cloth to form an insulating tape.
Example 3:
referring to fig. 5 to 8, the present embodiment provides a method for manufacturing the epoxy tab by using the above mold, which includes the following steps:
s1, sleeving a first ring body 1 and a second ring body 2 on a first rod body 41 and a second rod body 42 respectively, wherein the first ring body 1 and the second ring body 2 are positioned at two ends of the positioning piece 5 and aligned with the positioning piece 5;
s2, winding pre-impregnated epoxy glass fiber cloth outside the first ring body 1 and the second ring body 2; the two ends of the pre-impregnated epoxy glass fiber cloth are respectively positioned in the first notch 11 and the second notch 21, and the two side parts of the pre-impregnated epoxy glass fiber cloth are supported and positioned through the side walls at the two sides of the positioning piece 5;
s3, heating and curing the wound pre-impregnated epoxy glass fiber cloth;
and S4, after the heating and curing are completed, removing the die to obtain the epoxy pull ring formed by the first ring body 1, the second ring body 2 and the pre-impregnated epoxy glass fiber cloth (namely the insulating tape 3).
Specific manufacturing processes for the above method steps are exemplified as follows,
1. assembling a die and fixing a ring body and winding a preimpregnation epoxy glass fiber cloth flow:
1) Firstly, cutting pre-impregnated epoxy glass fiber cloth into a long strip shape, wherein release paper on two sides of the pre-impregnated epoxy glass fiber cloth is not uncovered;
2) Cleaning the positioning piece 5 and the ring body, removing burrs on the positioning piece 5 and the ring body, cleaning with alcohol and drying; the positioning piece 5 comprises a bottom plate 53, a fixed block 54 and a top plate 55, and the ring body comprises a first ring body 1 and a second ring body 2;
3) Coating a release agent on the surfaces of the bottom plate 53, the fixing block 54 and the top plate 55, which are contacted with the pre-impregnated epoxy glass fiber cloth;
4) The first ring body 1 and the second ring body 2 are respectively sleeved on the first rod body 41 and the second rod body 42, and the positioning piece 5 is fixed on the base 4, so that the first notch 11 on the first ring body 1 and the second notch 21 on the second ring body 2 respectively correspond to a through groove 52 formed by the side wall of the fixed block 5, the side edge of the bottom plate 53 and the side edge of the top plate 55;
5) The pre-impregnated epoxy glass fiber cloth cut before winding is started, release paper on two sides of the pre-impregnated epoxy glass fiber cloth is required to be removed during winding, and the pre-impregnated epoxy glass fiber cloth is tensioned at all times during winding, so that the pre-impregnated epoxy glass fiber cloth is wound tightly as much as possible;
6) After the winding of the pre-impregnated epoxy glass fiber cloth is completed, a layer of polyimide film is coated on the side surface of the wound mold, and then the pre-impregnated epoxy glass fiber cloth and the side wall of the fixed block 5 are relatively clamped by utilizing the first clamping plate 6 and the second clamping plate 7 from the side surface;
7) The method comprises the steps of putting a die assembly comprising preimpregnated epoxy glass fiber cloth, a first ring body 1 and a second ring body 2 into an oven for heating and curing under the following curing conditions: curing for 12 hours at 80 ℃;
8) After the heating and curing are completed, the die stripping can be started.
2. The whole process of removing the die and taking out the epoxy pull ring comprises the following steps:
9) First, the first clamping plate 6 and the second clamping plate 7 are loosened and removed, and the wrapped polyimide film is torn off;
10 Polishing the extruded excessive pre-impregnated epoxy glass fiber cloth along the winding direction of the pre-impregnated epoxy glass fiber cloth by sand paper, wherein the polishing is based on the shapes of the die positioning piece, the first ring body 1 and the second ring body 2.
11 The first rod 41 and the second rod 42 are removed, and the upper member and the lower member can be relatively removed by using the positioning member 5, so that the epoxy tab after the manufacture is integrally taken out.
The terms "upper", "lower", "left", "right" and the like used herein to describe orientations are used for convenience in the description based on the orientation depicted in the drawings, and may vary in actual devices depending on the manner in which the devices are placed.
In view of the foregoing, the technical content and features of the present utility model have been disclosed in the foregoing, it will be apparent to those skilled in the art that various substitutions and modifications can be made based on the disclosure without departing from the spirit of the utility model; therefore, the protection scope of the present utility model is not limited to the technical content disclosed in the embodiments, and all equivalent changes according to the shape, construction and principle of the present utility model are covered in the protection scope of the present utility model.
Claims (10)
1. The epoxy pull ring is characterized by comprising a first ring body, a second ring body which is arranged opposite to the first ring body and is not in contact with the first ring body, and an annular insulating belt fixedly sleeved on the first ring body and the second ring body; a first notch and a second notch for accommodating the insulating tape are respectively arranged on the circumferential side wall of the first ring body and the circumferential side wall of the second ring body; the insulating tape is pre-impregnated epoxy glass fiber cloth which is cured by heating.
2. A mold for making the epoxy tab of claim 1, the mold comprising:
a base;
the first rod body and the second rod body are arranged at two ends of the base and are respectively sleeved into the first ring body and the second ring body; and
The positioning piece is arranged on the base and used for positioning the insulating tape connected with the first ring body and the second ring body when the epoxy pull ring is manufactured, and the positioning piece is positioned between the first rod body and the second rod body.
3. A mould according to claim 2, further comprising a first clamping plate and a second clamping plate on opposite sides of the locating member.
4. A mould according to claim 2, wherein the two ends of the positioning member are provided with recesses respectively corresponding to the first ring and the second ring.
5. A mould according to claim 2, wherein the side walls of the two sides of the positioning member are provided with through grooves for receiving and positioning the insulating tape.
6. A mold according to claim 2, wherein the positioning member comprises:
a bottom plate positioned at the bottom;
the fixing blocks are arranged in the middle of the bottom plate and used for supporting and positioning the two side parts in the insulating tape; and
And the top plate is arranged on the upper surface of the fixed block and matched with the bottom plate.
7. The die set as claimed in claim 2, wherein through grooves for accommodating and positioning the insulating tape are respectively provided on the side walls of both sides of the positioning member body; the positioning member includes relatively detachable upper and lower members.
8. A mould according to claim 5 or 7, wherein the depth of the through slot is equal to the depth of the notch provided in the ring body.
9. A method of making an epoxy tab using the mold of any of the preceding claims 2-8, the method comprising the steps of:
s1, sleeving a first ring body and a second ring body on a first rod body and a second rod body respectively, wherein the first ring body and the second ring body are positioned at two ends of the positioning piece and aligned with the positioning piece;
s2, winding pre-impregnated epoxy glass fiber cloth outside the first ring body and the second ring body; the two ends of the pre-impregnated epoxy glass fiber cloth are respectively positioned in the first notch and the second notch, and the two side parts of the pre-impregnated epoxy glass fiber cloth are supported and positioned through the side walls at the two sides of the positioning piece body;
s3, heating and curing the wound pre-impregnated epoxy glass fiber cloth;
and S4, after the heating and curing are completed, removing the die to obtain the epoxy pull ring formed by the first ring body, the second ring body and the pre-impregnated epoxy glass fiber cloth.
10. The method of claim 9, wherein the pre-impregnated epoxy fiberglass cloth is heat cured under the following conditions: curing at 80 degrees celsius for 12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810011689.6A CN108242313B (en) | 2018-01-05 | 2018-01-05 | Epoxy pull ring, die and method for manufacturing epoxy pull ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810011689.6A CN108242313B (en) | 2018-01-05 | 2018-01-05 | Epoxy pull ring, die and method for manufacturing epoxy pull ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108242313A CN108242313A (en) | 2018-07-03 |
| CN108242313B true CN108242313B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810011689.6A Active CN108242313B (en) | 2018-01-05 | 2018-01-05 | Epoxy pull ring, die and method for manufacturing epoxy pull ring |
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| Country | Link |
|---|---|
| CN (1) | CN108242313B (en) |
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| JPH08316056A (en) * | 1995-05-22 | 1996-11-29 | Matsushita Electric Ind Co Ltd | Molded coil and its manufacture |
| CN103950206A (en) * | 2014-04-03 | 2014-07-30 | 江苏美时医疗技术有限公司 | Method for manufacturing magnetic resonance superconducting magnet pull bar |
| CN105609228A (en) * | 2015-12-31 | 2016-05-25 | 上海联影医疗科技有限公司 | Suspension system of cryostat |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090313812A1 (en) * | 2008-06-24 | 2009-12-24 | Sergey Pulnikov | Method for making electrical windings for electrical apparatus and transformers and winding obtained by said method |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08316056A (en) * | 1995-05-22 | 1996-11-29 | Matsushita Electric Ind Co Ltd | Molded coil and its manufacture |
| CN103950206A (en) * | 2014-04-03 | 2014-07-30 | 江苏美时医疗技术有限公司 | Method for manufacturing magnetic resonance superconducting magnet pull bar |
| CN105609228A (en) * | 2015-12-31 | 2016-05-25 | 上海联影医疗科技有限公司 | Suspension system of cryostat |
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