Water-cooling shaping device for plastic guide sleeve
Through the design of split-type fixed column structure and fastening screw, the problem of difficulty in taking out the integral fixed column is solved, ensuring the integrity of the guide sleeve and the quality of the finished product.
Patent Information
- Application Number
- CN202421979417.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-15
AI Technical Summary
In the prior art, the contact area between the integral shaped column and the inner hole of the guide sleeve is too large when taken out, resulting in a large contact friction force, making it difficult to remove it smoothly, and excessive knocking force can easily damage the guide sleeve.
A split-type fixed column structure that can be disassembled one by one is used, and a single split-piece is taken out one by one after water-cooled setting. The threaded holes and fastening screws are used to remove the fixed column to reduce contact area and friction.
The smooth disassembly of the fixed column is achieved, which avoids damage to the guide sleeve and improves the yield and molding quality.
Smart Images
Figure CN223044973U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of manufacturing guide sleeves for vacuum circuit breakers, and particularly relates to a water-cooling shaping device for plastic guide sleeves. Background Art
[0002] The guide sleeve in a vacuum circuit breaker is a key component. The guide sleeve is usually installed on one side of the vacuum interrupter, used to guide and support the movement of the moving conductive rod, ensure that the moving conductive rod moves linearly along the axis of the vacuum interrupter, does not swing left and right, and does not cause the vacuum interrupter to be subjected to torsional stress. This is an important prerequisite for ensuring the normal operation of the circuit breaker and extending its service life.
[0003] The guide sleeve is a component made by extruding blanks from materials such as polytetrafluoroethylene resin, sintering and cooling, and then finely processing by mechanical cutting according to specific geometric dimensions and tolerance ranges. The structure of the guide sleeve is as shown in the attached Figure 1 description. It has an inner hole, and there are positioning keys on the inner hole wall. After extrusion molding, since it will cool and shrink, especially the inner hole diameter, during the water-cooling process, the inner hole is shaped to avoid the reduction of the inner hole diameter. The currently used water-cooling shaping device is as shown in the attached Figures 2-3 description, which is a shaping column that fits with the inner hole and the positioning keys, and a support cylinder that embeds and supports the guide sleeve. The usage method of this water-cooling shaping device is as follows:
[0004] After the guide sleeve is extruded, it is embedded and placed on the support cylinder (there is a placement step in the support cylinder), as Figure 3 shown. Then, the shaping column is knocked into the inner hole of the guide sleeve, and then the guide sleeve and the shaping column are jointly placed in a water tank for water cooling. The shaping column can limit the shrinkage of the inner hole when the guide sleeve cools and shrinks, thereby ensuring the inner diameter size of the inner hole of the guide sleeve after cooling. After cooling is completed, as Figure 4 shown, the guide sleeve is embedded and placed on the support cylinder again, and the shaping column is separated from the guide sleeve by knocking again, thus completing the water-cooling shaping operation of the guide sleeve.
[0005] When the guide sleeve is water-cooled, it will shrink, resulting in the reduction of the inner hole diameter, and then it will closely adhere to the shaping column. When knocking and disassembling after cooling is completed, not only a large external force for knocking and disassembling is required, which is likely to cause excessive contact force between the guide sleeve and the support cylinder and lead to cracking; at the same time, when the shaping column axially disengages from the guide sleeve, the large contact friction force will also increase the surface roughness of the inner hole, thus affecting the yield and shaping quality of the guide sleeve. Summary of the Invention
[0006] In view of the above problems, the present application aims to provide a water-cooling shaping device for a plastic guide sleeve. Through the split structure of the shaping column, the individual split parts of the shaping column can be sequentially taken out from the guide sleeve, solving the problem that the contact area between the integral shaping column and the inner hole is too large when taken out at present, resulting in large contact friction and difficulty in smoothly taking out, and solving the problem that the impact force is too large when taken out at present and affecting the guide sleeve.
[0007] To achieve the above object, the technical solution adopted in the present application is as follows: A water-cooling shaping device for a plastic guide sleeve, the guide sleeve has an inner hole, and a positioning key is provided on the inner hole wall thereof. The water-cooling shaping device includes a shaping column that fits with the inner hole and the positioning key, and is characterized in that: the shaping column is arranged as a detachable split structure one by one, and further includes a fastening member for assembling the shaping column into a shape.
[0008] Preferably, a threaded hole is provided at the center of the shaping column, the fastening member is a fastening screw passing through the threaded hole, and the shaping column is circumferentially divided into a plurality of single columns.
[0009] Preferably, an arc-shaped notch is provided on the side of each single column.
[0010] Preferably, the side surface of each single column is a symmetric inclined surface structure and fits with the inclined surface of the side wall of the adjacent single column.
[0011] The beneficial effect of the present application is that the shaping column currently used in the present application is arranged as a detachable split structure one by one. After shaping, by disassembling the fastening member, the individual split parts of the shaping column can be sequentially taken out from the guide sleeve, solving the problem that the contact area between the integral shaping column and the inner hole is too large when taken out at present, resulting in large contact friction and difficulty in smoothly taking out, and solving the problem that the impact force is too large when taken out at present and affecting the guide sleeve. Description of the Drawings
[0012] Figure 1 It is a top view and a front view structure diagram of the guide sleeve.
[0013] Figure 2 It is a top view illustration of the shaping column inserted into the guide sleeve.
[0014] Figure 3 For Figure 2 Front view.
[0015] Figure 4 It is an illustration of knocking out the shaping column after the guide sleeve is cooled.
[0016] Figure 5 It is an illustration of the split shaping column of the present application being spliced into a whole and dispersed.
[0017] Figure 6It is a diagram showing that the sizing column of this application is inserted into the inner hole of the guide sleeve.
[0018] Figure 7 It is a diagram showing that a single monomer column is taken out after the guide sleeve of this application is cooled.
[0019] Figure 8 It is a diagram showing that a notch is opened on the side wall of a single monomer column of this application.
[0020] Figure 9 For this application Figure 8 It is a diagram showing the disassembly of a single monomer column in
[0021] Figure 10 It is a diagram showing that the side wall of a single monomer column of this application is set as an inclined plane.
[0022] Figure 11 For this application Figure 10 It is a diagram showing the disassembly of a single monomer column in Detailed implementation mode
[0023] In order to enable ordinary technicians in the art to better understand the technical solution of this application, the technical solution of this application will be further described below in conjunction with the drawings and embodiments.
[0024] Referring to Figures 1-11 A water-cooled sizing device for a plastic guide sleeve shown, the guide sleeve 1 has an inner hole 1a, and a positioning key 11 is provided on the inner hole wall of the inner hole 1a, and the structure is as Figure 1 shown. The water-cooled sizing device includes a sizing column 2 that fits with the inner hole 1a and the positioning key 11, and a support cylinder 4 that embeds and supports the guide sleeve. By externally inserting the sizing column 2 into the guide sleeve, the inner hole diameter of the guide sleeve can be guaranteed during water-cooling treatment.
[0025] In order to solve the problem that the inner hole diameter of the guide sleeve will decrease during water-cooling treatment at present, which will affect the smooth disassembly of the sizing column, the finished product rate and the forming quality of the guide sleeve. As Figure 5 shown, this application sets the sizing column 2 as a split structure that can be disassembled one by one, and includes a fastening member for assembling the sizing column 2 into a formed structure. Through this fastening member, the split sizing column 2 can be assembled into an integral structure, which is convenient for realizing the overall sizing of the inner hole 1a of the guide sleeve 1.
[0026] After the shaping is completed, by disassembling the fastening member, the shaping column 2 is in a split structure. In this structure, the individual split parts of the shaping column 2 can be sequentially taken out from the guide sleeve 1, solving the problem that the contact area between the integral shaping column 2 and the inner hole 1a is too large when taking it out currently, resulting in large contact friction and difficulty in taking it out smoothly. When the individual split parts of the shaping column 2 are taken out, they have a smaller contact surface with the inner hole 1a, and thus the contact friction is small, and they can be taken out smoothly. Then, the other split parts are taken out one by one, thus solving the problem that the impact force is too large when taking it out currently and affecting the guide sleeve 1.
[0027] Specifically, as Figures 5-7 shown, a threaded hole 2a is provided in the center of the shaping column 2; the fastening member is a fastening screw 3 inserted into the threaded hole 2a, and the shaping column 2 is circumferentially divided into a plurality of single columns 21. When assembling the shaping column 2 into the inner hole 1a, first as Figures 5-6 shown, the plurality of single columns 21 are spliced to form the threaded hole 2a, then the fastening screw 3 is threaded through the threaded hole 2a, and they are jointly embedded in the inner hole 1a. Then, by knocking the fastening screw 3, the shaping column 2 can be integrally embedded into the inner hole 1a (the extruded guide sleeve has a certain temperature and the inner hole has not shrunk due to cooling, and the assembled shaping column 2 can be smoothly embedded into its inner hole 1a). Then, it is placed in a cold water tank for water cooling as a whole. After cooling is completed, first, the fastening screw 3 is rotated and disassembled, and then by knocking the single column 21, it is separated from the inner hole 1a. After separation, the gap between the other single columns 21 increases, and they can be directly taken out smoothly, so as to quickly complete the separation of the shaping column 2 from the guide sleeve 1, and at the same time, it also avoids the problem that the large impact force on the shaping column 2 causes the guide sleeve 1 to crack and the inner wall roughness to increase.
[0028] During the process of disassembling the single column 21 as described above, there is still a certain area of contact between its side wall and the adjacent single column 21, and thus there is a certain contact friction, which affects the smooth disassembly of the single column 21. Therefore, in order to further reduce the contact friction between the single column 21 and the adjacent single column 21, preferably, as Figures 8-9 shown, an arc-shaped notch 2b is provided on the side of each single column 21. Through this notch 2b, the contact area between the single column 21 and the adjacent single column 21 can be reduced, and thus when taking it out and disassembling, there is less contact friction, and it can be taken out and disassembled smoothly.
[0029] In order to reduce the contact friction between the taken-out single column 21 and the adjacent single column 21, the present application also provides another implementation manner, such as Figure 10As shown, the side surface of a single said monomer column 21 is a symmetric inclined plane structure, making the whole monomer column 21 a conical structure and fitting with the inclined plane of the side wall of the adjacent monomer column 21. Further, during the process of taking out the monomer column 21, the horizontal distance between adjacent monomer columns 21 gradually increases, and the single monomer column 21 can be taken out smoothly, as Figure 11 shown, and then the other monomer columns 21 are taken out one by one in sequence.
[0030] The principle of this application is as follows: a threaded hole 2a is opened in the center of the currently used sizing column 2, a fastening screw 3 is inserted, and the sizing column 2 is circumferentially divided into a plurality of monomer columns 21. When assembling the sizing column 2 into the inner hole 1a, first, a plurality of monomer columns 21 are spliced to form the threaded hole 2a, then the fastening screw 3 is threaded through the threaded hole 2a, and they are jointly embedded in the inner hole 1a. Then, by knocking on the fastening screw 3, the whole sizing column 2 can be embedded into the inner hole 1a. Then, it is placed in a cold water tank for water cooling. After cooling is completed, first, the fastening screw 3 is rotated and disassembled, and then by knocking on a single monomer column 21, it is separated from the inner hole 1a. After separation, the gap between other monomer columns 21 increases, and it can be taken out directly smoothly, thus quickly completing the separation of the sizing column 2 from the guide sleeve 1, and at the same time avoiding the problems of the guide sleeve 1 being broken and the inner wall roughness increasing due to a large knocking force on the sizing column 2.
[0031] The above shows and describes the basic principle, main features and advantages of this application. Without departing from the spirit and scope of this application, this application will also have various changes and improvements, and these changes and improvements all fall within the scope of this application claimed.
Claims
1. A water-cooling shaping device for a plastic guide sleeve, the guide sleeve (1) having an inner hole (1a), a positioning key (11) on the wall of the inner hole (1a), the water-cooling shaping device comprising a shaping column (2) fitted with the inner hole (1a) and the positioning key (11), characterized in that: The shaping columns (2) are configured as a split structure that can be disassembled one by one, and include fastening components for assembling the shaping columns (2) into shape.
2. The water-cooling shaping device according to claim 1 is characterized in that: A threaded hole (2a) is provided at the center of the shaping column (2); the fastening member is a fastening screw (3) inserted into the threaded hole (2a), and the shaping column (2) is divided into a plurality of single columns (21) along the circumferential direction.
3. The water-cooling shaping device according to claim 2 is characterized in that: The side edges of each of the monomer columns (21) are each provided with an arc-shaped notch (2b).
4. The water-cooling shaping device according to claim 2 is characterized in that: The side surface of a single monomer column (21) is a symmetrical inclined surface structure, and is fitted with the inclined surface of the side wall of an adjacent monomer column (21).