High-voltage switch shell mold for high-voltage power transmission and transformation

Abstract

The invention relates to the technical field of mold production, in particular to a high-voltage switch shell mold for high-voltage power transmission and transformation, which comprises two bases, an upper mold and a lower mold, the two bases are bilaterally symmetrical, and the lower mold is mounted between the two bases; hydraulic oil cylinders for ejecting the upper mold and the lower mold are fixedly mounted at the tops of the two bases; bearing plates capable of moving up and down are placed at the bottoms of the bases, the upper mold is erected on the bearing plates at the tops of the two bases, and a pouring cavity is formed between the upper mold and the lower mold. The mold has the beneficial effects that the mold and a model formed through pouring can be jacked up through the hydraulic oil cylinder, so that separation of the upper mold, the model and the lower mold is achieved, and then the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of mold manufacturing technology, and more specifically, to a high-voltage switch housing mold for high-voltage power transmission and transformation. Background Technology

[0002] High-voltage switches are a general term for devices with voltages exceeding 1KV used to connect or disconnect circuits; high-voltage switches include disconnect switches, fuses, circuit breakers, and various combination switchgear; in the production process of high-voltage switch housings, we need to use injection molds, which are used to inject the heated and molten raw materials into the cavity of the mold, and after cooling, the formed product is obtained.

[0003] In existing high-voltage switch housing molds, the upper mold first separates from the lower mold via a drive structure during mold opening. Because the product exhibits some adhesion within the lower mold, an ejection mechanism is typically installed there for easy demolding. This is usually achieved by another drive structure that moves ejector pins upwards within the lower mold, thus ejecting the product. Therefore, the mold opening and demolding processes require two drive sources, increasing production costs. Consequently, finding a single drive source to handle both mold opening and demolding processes, thereby reducing production costs, is a problem urgently needing to be solved by those skilled in the art.

[0004] To address the aforementioned issues, there is an urgent need for a high-voltage switch housing mold for high-voltage power transmission and transformation. Summary of the Invention

[0005] The purpose of this invention is to provide a high-voltage switch housing mold for high-voltage power transmission and transformation, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a high-voltage switch housing mold for high-voltage power transmission and transformation is provided, including a base, an upper mold, and a lower mold. There are two bases, which are symmetrical about left and right. The lower mold is installed between the two bases. A hydraulic cylinder for ejecting the upper mold and the lower mold is fixedly installed on the top of the two bases. The bottom of the base is provided with a support plate that can move up and down, and the upper mold is mounted on the support plate on top of the two bases, wherein a casting cavity is formed between the upper mold and the lower mold. The upper mold is provided with ejector ears on both sides, and the output end of the hydraulic cylinder passes through the support plate and acts on the ejector ears; A limiting post is fixedly installed on the top of the base, and a top plate is fixedly installed on the top of the limiting post. Through holes are provided on the top plate, the ejector ear, and the support plate. A cylinder is inserted into the through hole. The cylinder passes through the top plate, the ejector ear, and the support plate from top to bottom. A bottom support plate is provided at the bottom of the cylinder. A limiting plate is also provided in the middle of the cylinder, wherein the limiting plate is located between the top plate and the ejector ear. Under the action of the hydraulic cylinder, the support plate will lift the high-voltage switch housing model upward, separating it from the lower mold. During this process, the ejector ear will move upward synchronously along the cylinder. When the ejector ear and the upper mold rise to a certain height, which means that the ejector ear contacts the limiting plate, the ejector ear will drive the cylinder to continue to move upward through the limiting plate. Because the bottom of the cylinder is equipped with a base plate, the base plate will move upward with the support plate. As the support plate moves upward, it will lift the cast high-voltage switch housing model upward, separating it from the lower mold.

[0007] Furthermore, the support plate has an opening for the hydraulic cylinder to pass through, and a blind hole is provided at the bottom of the support plate, into which the bottom support plate can be accommodated. Movable ears are provided on the side wall of the support plate, and the movable ears are sleeved on the limiting post and can move up and down along the limiting post under the action of the hydraulic cylinder. Although the cylinder can play a certain limiting role for the support plate, it will still wobble. The design of the limiting post can not only further limit the support plate, but also fix the top plate. The fixing of the top plate allows the cylinder to move up and down.

[0008] Furthermore, a first buffer spring is provided between the limiting plate and the ejector ear. The first buffer spring is sleeved on the cylinder. The bottom of the top plate has a groove for accommodating the limiting plate. A second buffer spring is fixedly installed in the groove. A buffer pad is also provided at the other end of the second buffer spring. By setting the first buffer spring, the force of the hydraulic cylinder on the limiting plate can be effectively reduced, ensuring that the limiting plate is not damaged or deformed. By setting the second buffer spring, the hydraulic cylinder can be prevented from continuing to apply extrusion force to the top plate after demolding is completed. A pressure sensor for detecting pressure is also provided in the groove. The software program can be set to control the hydraulic cylinder to stop working when the pressure on the second buffer spring exceeds a set threshold.

[0009] Furthermore, the distance between the two bases can be adjusted according to the size of the upper and lower molds, and the top of the base is also provided with mounting holes for installing hydraulic cylinders.

[0010] Furthermore, the top plate is provided with fixing ears on both sides, and the top of the limiting post is connected to the top plate through the fixing ears.

[0011] Furthermore, the limiting plate has a circular structure, and the cylinder is provided with an adjustment structure for adjusting the height of the limiting plate. The adjustment structure includes a positioning bolt threaded onto the limiting plate and positioning holes opened on the cylinder. The positioning holes are arranged linearly along the extension direction of the cylinder. A calibration groove is also opened on the surface of the cylinder. The inner wall of the limiting plate is provided with a protrusion that slides and engages in the calibration groove. By setting the calibration groove and the protrusion, the bolt on the limiting plate can be quickly aligned with the positioning hole, which is convenient for the operator to use.

[0012] Furthermore, the second buffer spring is a disc spring, and the limiting plate can compress the second buffer spring and press it into the groove under the action of the hydraulic cylinder. The groove is also equipped with a pressure sensor for detecting the pressure on the second buffer spring.

[0013] Furthermore, the ejector ear is fixedly connected to the upper mold by bolts, and the lower mold is fixedly connected to the base by bolts. Because bolts are used for connection, the ejector ear and the upper mold are detachable, and the lower mold and the base are also detachable, so that upper molds and lower molds of different sizes can be replaced and installed.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Under the action of the hydraulic cylinder, the upper mold is lifted up along with the ejector lug, thus separating the upper mold from the high-voltage switch housing model. After the upper mold is separated from the high-voltage switch housing model, it continues to be lifted upward under the action of the hydraulic cylinder and then abuts against the limiting plate. The limiting plate drives the cylinder to move upward, and the cylinder, along with the support plate, moves the high-voltage switch housing model after casting upward. At this point, the high-voltage switch housing model can be separated from the lower mold. After separation, the upper mold, the high-voltage switch housing model, and the lower mold are in different horizontal positions. 2. The installation height of the limiting plate can be adjusted by setting a corresponding adjustment structure on the cylinder. By adjusting the installation height of the limiting plate, the separation distance between the upper mold and the high-voltage switch housing model can be adjusted. 3. A pressure sensor for detecting pressure is also installed in the groove. The software program can be set to control the hydraulic cylinder to stop working when the pressure on the second buffer spring exceeds the set threshold, so as to prevent the hydraulic cylinder from continuing to output after the mold is completely disassembled, which would damage the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the mold in the state before it is ejected in an embodiment of the present invention; Figure 2 This is a schematic diagram of the upper mold in the ejection state in an embodiment of the present invention; Figure 3 This is a schematic diagram of the upper mold and the model in the ejected state in an embodiment of the present invention; Figure 4 This is an exploded view of the structure in an embodiment of the present invention; Figure 5 This is a schematic diagram of the top plate structure in an embodiment of the present invention; Figure 6 This is a schematic diagram of the support plate in an embodiment of the present invention; Figure 7 This is a schematic diagram of the adjustment structure in Embodiment 2 of the present invention.

[0016] The meanings of the labels in the diagram are as follows: 1. Base; 2. Upper mold; 3. Lower mold; 4. Hydraulic cylinder; 5. Support plate; 6. Ejector ear; 7. Limiting post; 8. Top plate; 9. Cylindrical part; 10. Bottom support plate; 11. Limiting plate; 12. Through hole; 13. Opening; 14. Blind hole; 15. Movable ear; 16. First buffer spring; 17. Groove; 18. Second buffer spring; 19. Buffer pad; 20. Fixing ear; 21. Mounting hole; 22. Adjustment structure; 2201. Positioning bolt; 2202. Positioning hole; 2203. Calibration groove; 2204. Protrusion. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” and “described” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the described features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. Example

[0019] Please see Figures 1-7 As shown, a high-voltage switch housing mold for high-voltage power transmission and transformation is provided, including a base 1, an upper mold 2 and a lower mold 3. There are two bases 1 and they are symmetrical from left to right. The lower mold 3 is installed between the two bases 1. A hydraulic cylinder 4 for ejecting the upper mold 2 and the lower mold 3 is fixedly installed on the top of the two bases 1. The bottom of the base 1 is provided with a support plate 5 that can move up and down. The upper mold 2 is mounted on the support plate 5 on the top of the two bases 1, and a casting cavity is formed between the upper mold 2 and the lower mold 3. The upper mold 2 is provided with ejector ears 6 on both sides, and the output end of the hydraulic cylinder 4 passes through the support plate 5 and acts on the ejector ears 6. A limiting post 7 is fixedly installed on the top of the base 1, and a top plate 8 is fixedly installed on the top of the limiting post 7. A through hole 12 is provided on the top plate 8, the ejector ear 6 and the support plate 5. A cylinder 9 is inserted into the through hole 12. The cylinder 9 passes through the top plate 8, the ejector ear 6 and the support plate 5 from top to bottom. A bottom support plate 10 is provided at the bottom of the cylinder 9. A limiting plate 11 is also provided in the middle of the cylinder 9, wherein the limiting plate 11 is located between the top plate 8 and the ejector ear 6. Under the action of hydraulic cylinder 4 and bottom support plate 10, the support plate 5 will lift the high-voltage switch housing model upward to separate it from the lower mold 3. During this process, the ejector ear 6 will move upward synchronously along the cylinder 9. When the ejector ear 6 and the upper mold 2 rise to a certain height, which means that the ejector ear 6 contacts the limiting plate 11, the ejector ear 6 will drive the cylinder 9 to continue to move upward through the limiting plate 11. Since the bottom of the cylinder 9 is provided with a bottom support plate 10, the bottom support plate 10 will move the support plate 5 upward. As the support plate 5 moves upward, it will lift the cast high-voltage switch housing model upward, separating it from the lower mold 3.

[0020] like Figure 4 , Figure 6 As shown: The support plate 5 has an opening 13 for the hydraulic cylinder 4 to pass through. The bottom of the support plate 5 has a blind hole 14. The bottom support plate 10 can be accommodated in the blind hole 14. When the bottom support plate 10 is accommodated in the blind hole 14, the support plate 5 can remain parallel to the top of the base 1. The side wall of the support plate 5 is provided with a movable ear 15. The movable ear 15 is sleeved on the limiting post 7 and can move up and down along the limiting post 7 under the action of the hydraulic cylinder 4. Although the cylinder 9 can play a certain limiting role for the support plate 5, it will still shake. The design of the limiting post 7 can not only further limit the support plate 5, but also fix the top plate 8. The fixing of the top plate 8 allows the cylinder 9 to move up and down. A first buffer spring 16 is provided between the limiting plate 11 and the ejector ear 6. The first buffer spring 16 is sleeved on the cylinder 9. The bottom of the top plate 8 is provided with a groove 17 for accommodating the limiting plate 11. A second buffer spring 18 is fixedly installed in the groove 17. A buffer pad 19 is also provided at the other end of the second buffer spring 18. By setting the first buffer spring 16, the force of the hydraulic cylinder 4 acting on the limiting plate 11 can be effectively reduced, ensuring that the limiting plate 11 is not damaged or deformed. By setting the second buffer spring 18, the hydraulic cylinder 4 can be prevented from continuing to apply pressure to the top plate 8 after demolding. A pressure sensor for detecting pressure is also provided in the groove 17. The software program can be set to control the hydraulic cylinder 4 to stop working when the pressure on the second buffer spring 18 exceeds the set threshold. The top plate 8 is provided with fixing ears 20 on both sides, and the top of the limiting post 7 is connected to the top plate 8 through the fixing ears 20. The second buffer spring 18 is a disc spring. The limiting plate 11 can compress the second buffer spring 18 and press it into the groove 17 under the action of the hydraulic cylinder 4. The groove 17 is also provided with a pressure sensor for detecting the pressure on the second buffer spring 18. Example

[0021] Based on Embodiment 1, the following structure is also included: The distance between the two bases 1 can be adjusted according to the size of the upper mold 2 and the lower mold 3. The top of the base 1 is also provided with a mounting hole 21 for installing the hydraulic cylinder 4. The specific adjustment method is to set a hydraulic structure between the two bases 1 and control the distance between the two bases 1 through the hydraulic structure. The ejector ear 6 is fixedly connected to the upper mold 2 by bolts, and the lower mold 3 is fixedly connected to the base 1 by bolts. Because the connection is made by bolts, the ejector ear 6 and the upper mold 2 can be disassembled, and the lower mold 3 and the base 1 can also be disassembled, so that upper mold 2 and lower mold 3 of different sizes can be replaced and installed. Example

[0022] Based on Embodiment 1 or Embodiment 2, the limiting plate 11 has a circular structure, and the cylinder 9 is provided with an adjustment structure 22 for adjusting the height of the limiting plate 11. The adjustment structure 22 includes a positioning bolt 2201 threadedly installed on the limiting plate 11 and a positioning hole 2202 opened on the cylinder 9. The positioning hole 2202 is linearly arranged along the extension direction of the cylinder 9. A calibration groove 2203 is also opened on the surface of the cylinder 9. The inner wall of the limiting plate 11 is provided with a protrusion 2204 that slides and engages in the calibration groove 2203. By setting the calibration groove 2203 and the protrusion 2204, the bolt on the limiting plate 11 can be quickly aligned with the positioning hole 2202, which is convenient for the operator to use. The separation distance between the upper mold 2 and the high-voltage switch housing model can be adjusted by adjusting the position of the limiting plate 11. Figure 1 , 2 Figures and Figure 3 As can be seen, the higher the installation height of the limiting plate 11, the greater the separation distance between the upper mold 2 and the high-voltage switch housing model; conversely, the lower the installation height of the limiting plate 11, the smaller the separation distance between the upper mold 2 and the high-voltage switch housing model.

[0023] Working principle: After the high-voltage switch housing model is cast, the overall state of the equipment is as follows: Figure 1 As shown, the gap between the upper mold 2 and the lower mold 3 is the casting cavity for the high-voltage switch housing model; Once the model is complete, the entire device will be in the following state: Figure 1 As shown, the hydraulic cylinder 4 then starts to work, and its output end acts on the ejector lug 6; Please refer to Figure 2 ,exist Figure 2 At this time, the hydraulic cylinder 4 lifts the ejector ear 6 and the upper mold 2, and the upper mold 2 completes the separation from the high-voltage switch housing model. It can be seen that the first buffer spring 16 is also compressed at this time. When the first buffer spring 16 is compressed to the limit, as the hydraulic cylinder 4 continues to output, the ejector ear 6 will transmit the force to the cylinder 9 through the limit plate 11. At this time, the cylinder 9, the ejector ear 6, the upper mold 2 and the support plate 5 will form a force-bearing whole. Please refer to Figure 3 ,exist Figure 3 As the hydraulic cylinder 4 continues to output, the cylinder 9 moves upward within the through hole 12 in the top plate 8. The cylinder 9 pulls the support plate 5 upward together through the bottom support plate 10. The support plate 5 supports the high-voltage switch housing model, so the high-voltage switch housing model is lifted upward and separated from the lower mold 3.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-voltage switch housing mold for high-voltage power transmission and transformation, comprising a base (1), an upper mold (2), and a lower mold (3), characterized in that: The number of bases (1) is two and they are symmetrical from left to right. The lower mold (3) is installed between the two bases (1). The top of the two bases (1) is fixedly equipped with hydraulic cylinders (4) for ejecting the upper mold (2) and the lower mold (3). The bottom of the base (1) is provided with a support plate (5) that can move up and down. The upper mold (2) is mounted on the support plate (5) on the top of the two bases (1), and a casting cavity is formed between the upper mold (2) and the lower mold (3). The upper mold (2) is provided with ejector ears (6) on both sides, and the output end of the hydraulic cylinder (4) passes through the support plate (5) and acts on the ejector ears (6); A limiting post (7) is fixedly installed on the top of the base (1), and a top plate (8) is fixedly installed on the top of the limiting post (7). A through hole (12) is opened on the top plate (8), the ejector ear (6) and the support plate (5). A cylinder (9) is inserted into the through hole (12). The cylinder (9) passes through the top plate (8), the ejector ear (6) and the support plate (5) from top to bottom. A bottom support plate (10) is provided at the bottom of the cylinder (9). A limiting plate (11) is also provided in the middle of the cylinder (9). The limiting plate (11) is located between the top plate (8) and the ejector ear (6).

2. The high-voltage switch housing mold for high-voltage power transmission and transformation according to claim 1, characterized in that: The support plate (5) has an opening (13) for the hydraulic cylinder (4) to pass through. The bottom of the support plate (5) has a blind hole (14) and the bottom support plate (10) can be accommodated in the blind hole (14). The side wall of the support plate (5) is provided with a movable ear (15). The movable ear (15) is sleeved on the limiting post (7) and can move up and down along the limiting post (7) under the action of the hydraulic cylinder (4).

3. The high-voltage switch housing mold for high-voltage power transmission and transformation according to claim 2, characterized in that: A first buffer spring (16) is provided between the limiting plate (11) and the ejector ear (6). The first buffer spring (16) is sleeved on the cylinder (9). A groove (17) for accommodating the limiting plate (11) is provided at the bottom of the top plate (8). A second buffer spring (18) is fixedly installed in the groove (17). A buffer pad (19) is also provided at the other end of the second buffer spring (18).

4. A high-voltage switch housing mold for high-voltage power transmission and transformation according to claim 3, characterized in that: The distance between the two bases (1) can be adjusted according to the size of the upper mold (2) and the lower mold (3). The top of the base (1) is also provided with mounting holes (21) for installing hydraulic cylinders (4).

5. A high-voltage switch housing mold for high-voltage power transmission and transformation according to claim 4, characterized in that: The top plate (8) is provided with fixing ears (20) on both sides, and the top of the limiting post (7) is connected to the top plate (8) through the fixing ears (20).

6. A high-voltage switch housing mold for high-voltage power transmission and transformation according to claim 5, characterized in that: The limiting plate (11) has a circular structure. The cylinder (9) is provided with an adjustment structure (22) for adjusting the height of the limiting plate (11). The adjustment structure (22) includes a positioning bolt (2201) threaded on the limiting plate (11) and a positioning hole (2202) opened on the cylinder (9). The positioning hole (2202) is arranged linearly along the extension direction of the cylinder (9). The surface of the cylinder (9) is also provided with a calibration groove (2203). The inner wall of the limiting plate (11) is provided with a protrusion (2204) that slides and engages in the calibration groove (2203).

7. A high-voltage switch housing mold for high-voltage power transmission and transformation according to claim 3, characterized in that: The second buffer spring (18) is a disc spring. The limiting plate (11) can squeeze the second buffer spring (18) under the action of the hydraulic cylinder (4) and press it into the groove (17). The groove (17) is also equipped with a pressure sensor for detecting the pressure on the second buffer spring (18).

8. A high-voltage switch housing mold for high-voltage power transmission and transformation according to claim 6, characterized in that: The ejector ear (6) is fixedly connected to the upper mold (2) by bolts, and the lower mold (3) is fixedly connected to the base (1) by bolts.

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