A device for manufacturing a glass fiber hanging ring

Abstract

The application discloses a preparation device for a glass fiber lifting ring, which comprises a bottom die, an axial positioning support mechanism, two groups of side dies, and a side die support mechanism arranged between the two groups of side dies for relative position keeping.

Description

Technical Field

[0001] This invention relates to the field of glass fiber lifting ring technology, specifically to a glass fiber lifting ring preparation apparatus. Background Technology

[0002] Circular glass fiber reinforced collars are glass fiber reinforced products made by impregnating alkali-free glass fibers, winding them axially, and then curing them at high temperatures. These products feature high temperature resistance, corrosion resistance, excellent insulation properties, and high tensile strength. They are mainly used as main load-bearing structural accessories under high voltage conditions, and there is currently high demand for them in both domestic and international markets.

[0003] Currently, the main drawbacks of this product are manual preparation, poor winding tightness, difficulty in demolding, and high mold preparation costs. Due to the irregular shape of the product and the presence of burrs and uneven rubber blocks after manual winding, demolding is extremely difficult. Currently, the main preparation method is to use disposable plastic molds. As product preparation is completed, these plastic molds also break and become unusable during demolding, resulting in high production costs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a glass fiber lifting ring preparation device. The device adopts a detachable module to realize the reuse of the production mold, which facilitates the demolding of the workpiece. The demolded workpiece has a flat interface and does not require rework or repair, thereby further improving production efficiency and reducing the defect rate. It can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for preparing fiberglass hanging rings, comprising, Bottom mold; An axial positioning support mechanism includes two sets of symmetrically arranged positioning columns that are perpendicular to the bottom mold, wherein the cross-section of the positioning columns is horseshoe-shaped. There are two sets of side molds, which are symmetrically arranged about the axis of the positioning column. The cross-section is U-shaped and the openings of the two sets of side molds are opposite to each other. A side mold support mechanism is provided between the two sets of side molds to maintain their relative positions.

[0006] As a preferred embodiment of the present invention, the positioning column is slidably mounted on the surface of the bottom mold along the axis connection direction; It also includes a lead screw mechanism that meshes with two sets of positioning columns simultaneously, the lead screw mechanism being able to drive the two sets of positioning columns to move relative to or towards each other along the axis connecting lines.

[0007] As a preferred embodiment of the present invention, the positioning post is provided with a blind groove along its own axial direction, and the cross-section of the blind groove is T-shaped; The side mold support mechanism includes a side support plate for simultaneously supporting two sets of side molds, and an end support that can be engaged in a blind groove. The end of the end support is an arc-shaped surface with the same curvature as the circumferential surface of the positioning column.

[0008] As a preferred embodiment of the present invention, the side support plate is provided with a dovetail-shaped guide groove in a direction perpendicular to the bottom mold, and the back of the side mold is provided with a slide rail that can be slidably installed with the guide groove. One end of the guide groove of the side support plate is not through, and the side formwork support mechanism is provided with a lifting hole for lifting. When lifted upwards, the side support plate can cause the side mold to detach from the bottom mold.

[0009] As a preferred embodiment of the present invention, the bottom mold has a double-layer structure, including a front plate and a rear plate that are relatively parallel and fixedly arranged. The surface of the front plate is provided with a through groove, the positioning column is slidably installed in the groove, and the lead screw mechanism is arranged between the front plate and the rear plate. A coupling for connecting the power mechanism is provided in the middle of the rear plate.

[0010] As a preferred embodiment of the present invention, the bottom mold surface near the circumference of the positioning column is provided with support pins in a ring array. Support pins are provided on the surface of the bottom mold at the corresponding position of the side mold; All support pins have the same surface height.

[0011] As a preferred embodiment of the present invention, the lead screw mechanism includes a lead screw and a lead screw nut embedded in the positioning column. The end of the lead screw is provided with an operating end, and the axis of the lead screw is parallel to the axis connecting the two sets of positioning columns. The threads at the junction of the lead screw and the two sets of positioning columns are opposite in direction.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the glass fiber lifting ring preparation device adopts a detachable modular combination to achieve fixed support of the lifting ring, and uses a metal side mold instead of a traditional plastic mold, which facilitates demolding of the workpiece and reuse of the mold. Moreover, the addition of the side mold effectively ensures the interface flatness of the workpiece after high-temperature curing and demolding, reduces the probability of rework and re-repair, improves the yield, and improves the processing efficiency. At the same time, the integrated side mold support mechanism and the positioning column structure with blind groove are adopted, which makes it easy for the workpiece after being wrapped with glass fiber to be separated from the bottom mold. This allows the bottom mold to be placed into the curing oven at the same time when the workpiece is cured at high temperature, increasing the single workpiece capacity in the curing oven, and the bottom mold can be continuously recycled. The side mold support mechanism provides support for the workpiece in both the length and width directions, ensuring that the workpiece is fixed in shape before curing and avoiding deformation problems during the transfer process before curing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the workpiece structure processed according to the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the second embodiment of the present invention; Figure 4 This is a front view of the second embodiment of the present invention; Figure 5 This is a cross-sectional view at point AA of the second embodiment of the present invention; Figure 6 This is a cross-sectional view at BB in the second embodiment of the present invention; Figure 7 This is a cross-sectional view at CC of the second embodiment of the present invention.

[0014] In the diagram: 1. Bottom mold; 101. Front plate; 102. Rear plate; 103. Coupling; 104. Support pin; 105. Slide groove; 2. Axial positioning support mechanism; 201. Positioning column; 202. Lead screw; 3. Side mold; 301. Slide rail; 4. Side mold support mechanism; 401. Side support plate; 402. End support; 403. Lifting hole. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] See Figure 1 The workpiece to be produced in this application has U-shaped lifting lugs at both ends and a U-shaped cross-section. Glass fiber impregnated with epoxy resin and curing agent is wrapped between the two sets of lifting lugs and cured at high temperature. The finished product has a ring structure.

[0017] Example 1: Please see Figure 2 This invention provides a technical solution: a device for preparing fiberglass hanging rings, comprising, Bottom mold 1; The axial positioning support mechanism 2 includes two sets of symmetrically arranged positioning columns 201 that are perpendicular to the bottom mold 1. The cross section of the positioning column 201 is horseshoe-shaped. There are two sets of side molds 3, which are symmetrically arranged about the axis of the positioning column 201. The cross-section is U-shaped and the openings of the two sets of side molds 3 are opposite to each other. A side mold support mechanism 4 is provided between the two sets of side molds 3 to maintain their relative positions.

[0018] The positioning posts 201 are fixedly installed with the bottom mold 1, and the distance between the two sets of positioning posts 201 is fixed. In use, the metal lifting lugs of the workpiece are placed outside the positioning posts 201. The lifting lugs are fixed by the horseshoe-shaped structure of the positioning posts 201. At this time, the distance between the two sets of lifting lugs is fixed, which helps to ensure that the length of the workpiece is constant. Then, two sets of side molds 3 are placed, and columnar support columns are placed between the two sets of side molds 3 to ensure that the distance between the two sets of side molds 3 is constant. After impregnation, glass fiber is wound between the two sets of lifting lugs. During the winding process, the internal stress of the glass fiber is maintained to ensure that it is in a taut state. After the winding is completed, the bottom mold 1 and the workpiece are sent into the curing oven together for high-temperature curing for 1-2 hours. Then, the workpiece is demolded. When demolding, the workpiece is first separated from the bottom mold 1, then the support columns are removed, and the side molds 3 are removed to obtain the workpiece.

[0019] Before the glass fiber winding begins, a release agent should be sprayed onto the inner wall of the side mold 3 to help reduce the difficulty of demolding and ensure the surface finish of the workpiece.

[0020] Example 2: See Figures 3-7 The positioning column 201 is slidably installed on the surface of the bottom mold 1 along the axis line; It also includes a lead screw mechanism that meshes with two sets of positioning pins 201 simultaneously. The lead screw mechanism can drive the two sets of positioning pins 201 to move relative to or towards each other along the axis line. During the glass fiber winding process, the positioning post 201 can support the lifting lug in the length direction to ensure that the length of the workpiece is constant. However, after the winding is completed, there is a large relative force between the lifting lug and the positioning post 201, that is, there is a large frictional force when the workpiece is separated. Therefore, when the workpiece is separated from the bottom mold 1, reducing the distance between the two sets of positioning posts 201 helps to separate the lifting ring from the bottom mold 1 and facilitates the demolding of the workpiece.

[0021] See Figure 7 The positioning post 201 is provided with a blind groove along its own axis, and the cross section of the blind groove is T-shaped; The side mold support mechanism 4 includes a side support plate 401 for simultaneously supporting two sets of side molds 3, and an end support 402 that can be engaged in the blind groove. The end of the end support 402 is an arc surface with the same curvature as the circumferential surface of the positioning post 201. The side mold support mechanism 4 provides support for the workpiece in both the length and width directions at the same interval. Even if it is separated from the bottom mold before curing, it can still maintain good stability and will not cause the workpiece to deform. Meanwhile, during the glass fiber winding process, due to the tension of the glass fiber itself, a large supporting force is required between the two sets of lifting rings. At this time, the end support 402 and the positioning column 201 can be combined into one, providing support for the lifting lug. The end support 402 preferably has a fan-shaped structure. That is, after the end support 402 and the positioning column 201 are combined into one, the positioning column 201 can not only increase the supporting force in the length direction of the end support 402, but also fix the entire side mold support mechanism 4 to prevent it from separating from the bottom mold 1. After the glass fiber winding is completed, the distance between the two sets of positioning posts 201 is reduced, and the side mold support mechanism 4 and the workpiece can be easily removed.

[0022] See Figure 7 The side support plate 401 is provided with a dovetail-shaped guide groove in a direction perpendicular to the bottom mold 1, and the back of the side mold 3 is provided with a slide rail 301 that can be slidably installed with the guide groove. One end of the guide groove of the side support plate 401 is not through, and the side formwork support mechanism 4 is provided with a lifting hole 403 for lifting. When lifted upwards, the side support plate 401 can cause the side mold 3 to detach from the bottom mold 1; After the glass fiber winding is completed, the lifting lugs at both ends will exert a positive pressure on the end support 402 due to the internal stress of the glass fiber. Therefore, during the lifting process, there is a large friction between the side mold support mechanism 4 and the lifting lugs, which is sufficient to lift the workpiece synchronously with the side mold support mechanism 4.

[0023] See Figure 5 and Figure 6 The bottom mold 1 has a double-layer structure, including a front plate 101 and a rear plate 102 that are relatively parallel and fixedly arranged. The surface of the front plate 101 is provided with a through groove 105. The positioning column 201 is slidably installed in the groove 105, and the lead screw mechanism is arranged between the front plate 101 and the rear plate 102. A coupling 103 for connecting the power mechanism is provided in the middle of the rear plate 102. The bottom mold 1 with a double-layer design facilitates the arrangement of the lead screw mechanism. The lead screw 202 is hidden in the middle of the double-layer structure, which helps to protect the lead screw from the dripping glue and ensures its smooth movement. Furthermore, a coupling 103 is installed at the rear of the rear plate 102 to facilitate connection of the power mechanism and the establishment of an automated production line.

[0024] See Figure 4 and Figure 5 The bottom mold 1 surface near the circumference of the positioning post 201 is provided with support nails 104 in a ring array; Support pins 104 are provided on the surface of the bottom mold 1 at the corresponding position of the side mold 3; All support pins have the same surface height (104). The structural design of the support nail 104 ensures that the lifting lug and the side mold 3 have a relatively stable positional relationship during assembly, thereby improving product consistency.

[0025] See Figure 5 The lead screw mechanism includes a lead screw 202 and a lead screw nut embedded in the positioning column 201. The end of the lead screw 202 is provided with an operating end, and the axis of the lead screw 202 is parallel to the axis connecting the two sets of positioning columns 201, and the thread direction of the lead screw 202 and the two sets of positioning columns 201 are opposite. The positioning column 201 is driven by a lead screw mechanism and has a self-locking characteristic. That is, even if the internal stress of the glass fiber is large when the glass fiber is wound, the positioning block will not be displaced, thus ensuring the stability of the product dimensions.

[0026] In use: First, insert the side mold support mechanism 4 into the blind groove of the positioning column 201, then widen the distance between the two sets of positioning columns 201 until the side mold support mechanism 4 is clamped. Then, use the dovetail groove of the side support plate 401 to install and fix the side mold 3. Then, wind the glass fiber. After completion, reduce the distance between the two sets of positioning columns 201. Through the lifting rope in the lifting hole 403, pull the side mold support mechanism 4, the side mold 3 and the workpiece to detach from the bottom mold at the same time, and place the assembly in the curing oven for curing. Since it is not necessary to put the bottom mold 1 into the curing oven at the same time, the capacity of the workpiece in the curing oven at one time is effectively increased, and the production efficiency is improved.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preparing fiberglass hanging rings, characterized in that: include, Bottom mold (1); The axial positioning support mechanism (2) includes two sets of symmetrically arranged positioning columns (201) that are perpendicular to the bottom mold (1), and the cross section of the positioning column (201) is horseshoe-shaped. The side molds (3) consist of two sets, arranged symmetrically about the axis of the positioning column (201), with a U-shaped cross section, and the openings of the two sets of side molds (3) are opposite to each other; A side mold support mechanism (4) for maintaining the relative position is provided between the two sets of side molds (3); The positioning column (201) is slidably mounted on the surface of the bottom mold (1) along the axis line direction; It also includes a lead screw mechanism that meshes with two sets of positioning columns (201) at the same time, the lead screw mechanism being able to drive the two sets of positioning columns (201) to move relative to or towards each other along the axis line; The positioning post (201) is provided with a blind groove along its own axis, and the cross-section of the blind groove is T-shaped; The side mold support mechanism (4) includes a side support plate (401) for simultaneously supporting two sets of side molds (3) and an end support (402) that can be engaged in the blind groove. The end of the end support (402) is an arc surface with the same curvature as the circumferential surface of the positioning column (201).

2. The apparatus for preparing fiberglass rings according to claim 1, characterized in that: The side support plate (401) is provided with a dovetail-shaped guide groove in a direction perpendicular to the bottom mold (1), and the back of the side mold (3) is provided with a slide rail (301) that can be slidably installed with the guide groove. The guide groove of the side support plate (401) is not through, and the side mold support mechanism (4) is provided with a lifting hole (403) for lifting. When lifted upwards, the side support plate (401) can drive the side mold (3) to detach from the bottom mold (1).

3. The apparatus for preparing fiberglass rings according to claim 1, characterized in that: The bottom mold (1) has a double-layer structure, including a front plate (101) and a rear plate (102) that are relatively parallel and fixedly arranged. The surface of the front plate (101) is provided with a through groove (105). The positioning column (201) is slidably installed in the groove (105), and the lead screw mechanism is arranged between the front plate (101) and the rear plate (102). A coupling (103) for connecting the power mechanism is provided in the middle position of the rear plate (102).

4. The apparatus for preparing fiberglass rings according to claim 1, characterized in that: The bottom mold (1) surface near the circumference of the positioning post (201) is provided with support nails (104) in a ring array. The bottom mold (1) at the corresponding position of the side mold (3) is provided with support nails (104). All support pins (104) have the same surface height.

5. The apparatus for preparing fiberglass rings according to claim 1, characterized in that: The lead screw mechanism includes a lead screw (202) and a lead screw nut embedded in a positioning column (201). The end of the lead screw (202) is provided with an operating end, and the axis of the lead screw (202) is parallel to the axis connecting the two sets of positioning columns (201), and the thread direction at the joint between the lead screw (202) and the two sets of positioning columns (201) is opposite.

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