Injection molding equipment for machining steam turbine air valve

Abstract

The utility model discloses injection molding equipment for machining an air valve of a steam turbine, and relates to the technical field of machining of steam turbine accessories, in particular to a supporting table, a mold base is fixed at the top of the supporting table, a middle mold is movably connected in an inner cavity of the mold base, and one end of the mold base is connected with a left mold through a first hydraulic telescopic rod. The other end of the mold base is connected with a right mold through a second hydraulic telescopic rod, electromagnets are fixed to the middle of the left mold and the middle of the right mold correspondingly, and the middle mold and the electromagnets in the power-on state are in magnetic attraction. A sliding groove is formed in the top of the side, close to the left mold, of the mold base. According to the injection molding equipment for machining the steam turbine air valve, the mold base, the middle mold, the left mold and the right mold are arranged, in the demolding process of the equipment, another injection molding cavity can be formed in the inner cavity of the mold base, then materials can be injected into the molding cavity in the demolding process, and the efficiency of machining steam turbine air valve parts through the equipment can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing steam turbine accessories, in particular to injection molding equipment for processing steam turbine valves. Background Art

[0002] Steam turbine is the main equipment of modern thermal power plant. Steam turbine valve is one of the important components for controlling steam turbine. By controlling the opening of the valve, the speed of the steam turbine can be adjusted. Steam turbine valve usually includes valve body, valve cover, valve plate and valve stem. Valve plate is the main part of the valve. In the process of valve plate processing, injection molding is one of the commonly used processing methods for valve plate processing.

[0003] In the prior art, when valve plates are produced by injection molding, the injection molding material is usually injected into the mold cavity from the injection port. After cooling and solidification, a molded product can be obtained. However, during the cooling and solidification process of the molded product, the residual material in the injection port is also cooled and connected to the molded product to form a material handle. The material handle will affect the processing quality of the product and needs to be removed later, which increases the valve plate processing steps and causes material waste. In addition, the injection molding material can only be injected into the mold cavity again after demolding is completed, affecting the production efficiency of the injection molding equipment. Based on this, the present application proposes an injection molding equipment for processing turbine valves. Utility Model Content

[0004] The utility model provides an injection molding device for processing turbine valves, which solves the problems in the above background technology that material handles are easily generated during the injection molding process and the injection material can only be injected into the cavity again after demoulding is completed, which affects the production efficiency of the injection molding device.

[0005] The utility model provides the following technical scheme: an injection molding device for processing a steam turbine valve, comprising a support platform, a mold base is fixed on the top of the support platform, a middle mold is movably connected in the inner cavity of the mold base, one end of the mold base is connected to a left mold through a hydraulic telescopic rod 1, and the other end of the mold base is connected to a right mold through a hydraulic telescopic rod 2, and electromagnets are fixed in the middle of both the left mold and the right mold, and the middle mold is magnetically attracted to the electromagnet in an energized state; a slide groove is provided on the top of the mold base on the side close to the left mold, a movable plate 1 is movably connected in the inner cavity of the slide groove, an injection port is provided in the middle of one end of the movable plate 1, another slide groove is provided on the top of the mold base on the side close to the right mold, a movable plate 2 is movably connected in the inner cavity of the other slide groove, another injection port is provided in the middle of the other end of the movable plate 2, and material receiving frames are provided on both sides of the top of the mold base;

[0006] The top of the support platform is fixedly connected with a support rod, both ends of the support rod are fixed with hydraulic telescopic rods four, the top of the hydraulic telescopic rod four is fixedly connected with a push rod, and the side of the hydraulic telescopic rod four close to the mold base is fixed with a pressure plate adapted to the middle mold, and another electromagnet is provided in the middle of the pressure plate.

[0007] Preferably, guide rods are fixed to both ends of the mold base, and the ends of both the left mold and the right mold are movably connected to the guide rods.

[0008] Preferably, electric heating plates are fixed to the bottom of one end of the movable plate 1 close to the injection port, the bottom of one end of the movable plate 2 close to the other injection port, and the inner wall of the material receiving frame.

[0009] Preferably, the movable plate one and the movable plate two are connected by a connecting rod, a hydraulic telescopic rod three is fixed to the top of the mold base, the other end of the hydraulic telescopic rod three is fixedly connected to the middle part of the connecting rod, and when the injection port is located in the middle part of the top of the mold base inner cavity, the other injection port is located above a material receiving frame adapted thereto.

[0010] Preferably, the bottom of the push rod is located below the pressing plate, and the distance between the portion where the pressing plate contacts the top of the middle mold and the bottom of the push rod is greater than the distance between the top of the molded part and the top of the middle mold.

[0011] Preferably, the left mold and the right mold both include a template adapted to the inner cavity of the mold base and a positioning plate movably connected to the guide rod, and one end of the positioning plate close to the mold base is fixedly connected to the template.

[0012] Preferably, the distance between the middle mold and the left mold is equal to the distance between the middle mold and the right mold, and when the positioning plate contacts the mold base, one end of the middle mold away from the positioning plate in contact with the mold base is located outside the mold base.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The injection molding equipment for processing steam turbine valves, through the arrangement of a mold base, a middle mold, a left mold and a right mold, can form another injection molding cavity in the inner cavity of the mold base during the demolding process of the equipment, so that during the demolding process, the material can be injected into the molding cavity, which can improve the efficiency of the equipment in processing steam turbine valve parts.

[0015] 2. The injection molding equipment for processing turbine valves can keep the injection port away from the molding cavity during the molding process of the molded part by setting the movable plate 1, the movable plate 2 and the material receiving frame, so that no material handle is generated on the molded part, thereby improving the processing quality of the molded part, and the residual material in the injection port can be collected by the material receiving frame, thereby reducing material waste and saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the back of the structure diagram of the utility model;

[0018] Figure 3 This is an enlarged schematic diagram of the structural mold base of the utility model;

[0019] Figure 4 The utility model structure Figure 3 Schematic cross-section;

[0020] Figure 5 It is a bottom schematic diagram of a movable plate of the structure of the utility model.

[0021] In the figure: 1. Support table; 2. Support rod; 3. Hydraulic telescopic rod four; 4. Press plate; 5. Push rod; 6. Mold base; 7. Receiving frame; 8. Hydraulic telescopic rod one; 9. Guide rod; 10. Right mold; 11. Electromagnet; 12. Left mold; 13. Hydraulic telescopic rod two; 14. Electric heating plate; 15. Moving plate two; 16. Middle mold; 17. Moving plate one; 18. Connecting rod; 19. Injection port; 20. Hydraulic telescopic rod three. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides an injection molding device for processing a steam turbine valve, comprising a support platform 1, a mold base 6 is fixed on the top of the support platform 1, a middle mold 16 is movably connected to the inner cavity of the mold base 6, one end of the mold base 6 is connected to a left mold 12 through a hydraulic telescopic rod 18, and the other end of the mold base 6 is connected to a right mold 10 through a hydraulic telescopic rod 2 13, and the distance between the middle mold 16 and the left mold 12 is equal to the distance between the middle mold 16 and the right mold 10. Through the setting of the hydraulic telescopic rod 18, the extension and retraction of the hydraulic telescopic rod 18 can change the position of the left mold 12 fixedly connected thereto, and the extension and retraction of the hydraulic telescopic rod 2 13 can change the position of the right mold 10 fixedly connected thereto.

[0024] The left mold 12 and the right mold 10 both include a mold plate adapted to the inner cavity of the mold base 6, a positioning plate is fixedly connected to the outer side of the mold plate, and guide rods 9 are fixed to both ends of the mold base 6. The left mold 12 and the right mold 10 are movably connected to the guide rods 9 through the positioning plates. Through the setting of the guide rods 9, the left mold 12 and the right mold 10 can be positioned so that the left mold 12 and the right mold 10 can move at the same height, which is convenient for the use of the injection molding device.

[0025] An electromagnet 11 is fixed in the middle of both the left mold 12 and the right mold 10, and the middle mold 16 is magnetically attracted to the electromagnet 11 in the energized state. Through the setting of the electromagnet 11, when the electromagnet 11 is in the energized state, the movement of the left mold 12 or the movement of the right mold 10 can cause the middle mold 16 to move accordingly. The middle mold 16 can be used to push out the injection molded parts, and it is beneficial to keep the distance between the middle mold 16 and the left mold 12 or the right mold 10 unchanged.

[0026] When the present application is in use, when the left mold 12 is tightly fitted with the mold base 6, the end of the middle mold 16 away from the left mold 12 is located on the outside of the mold base 6, and the cavity between the left mold 12 and the middle mold 16 is the injection molding cavity 1 of the steam turbine valve parts. The top of the injection molding cavity 1 is provided with a slide groove, and the inner cavity of the slide groove is movably connected with a movable plate 17. The middle part of one end of the movable plate 17 is provided with an injection port 19. When the injection port 19 is located in the middle of the top of the injection molding cavity 1, the injection molding raw material can be injected into the injection molding cavity 1 through the injection port 19, and when the injection port 19 moves to the outside of the mold base 6, the other end of the movable plate 17 seals the top of the injection molding cavity 1, so that the material is easy to be molded in the injection molding cavity 1. A material receiving frame 7 is fixed on the outside of the mold base 6, and the material in the injection port 19 can be collected by the material receiving frame 7.

[0027] When the right mold 10 is tightly fitted with the mold base 6, the end of the middle mold 16 away from the right mold 10 is located on the outside of the mold base 6, and the cavity between the right mold 10 and the middle mold 16 is the injection molding cavity 2 of the turbine valve parts. The top of the injection molding cavity 2 is provided with a slide groove, and the inner cavity of the slide groove is movably connected with a movable plate 2 15. The middle of the other end of the movable plate 2 15 is provided with another injection port 19. When the other injection port 19 is located in the middle of the top of the injection molding cavity 2, the injection molding raw material can be injected into the injection molding cavity 2 through the other injection port 19. When the other injection port 19 moves to the outside of the mold base 6, the other end of the movable plate 2 15 seals the top of the injection molding cavity 2, which is convenient for the material to be molded in the injection molding cavity 2. Another material receiving frame 7 is fixed to the outside of the other end of the mold base 6. The material in the other injection port 19 can be collected by using the other material receiving frame 7.

[0028] The above-mentioned moving plate 17 and moving plate 2 15 are connected by connecting rod 18, and a hydraulic telescopic rod 3 20 is fixed on the top of the mold base 6, and the other end of the hydraulic telescopic rod 3 20 is fixedly connected to the middle of the connecting rod 18, and when the injection port 19 is located in the middle of the top of the inner cavity of the mold base 6, the other injection port 19 is located above the material receiving frame 7 adapted thereto. Through the setting of the hydraulic telescopic rod 3 20, the extension and retraction of the hydraulic telescopic rod 3 20 can change the positions of the moving plate 17 and the moving plate 2 15, which is convenient for the use of the device.

[0029] The bottom of one end of the movable plate 17 close to the injection port 19, the bottom of one end of the movable plate 2 15 close to the other injection port 19 and the inner wall of the receiving frame 7 are all fixed with electric heating plates 14. By setting the electric heating plates 14, the materials in the injection port 19 and the materials in the receiving frame 7 can be kept warm or heated to avoid solidification of the materials, so as to facilitate the recycling of the materials.

[0030] From the above description, it can be seen that when the injection molding equipment is in use, during the demoulding process of injection molding, the material can be injected into another injection molding cavity, thereby improving the working efficiency of the equipment. In addition, during the molding process of the injection molded part, no material handle is generated, thereby improving the production quality of the molded part.

[0031] A support rod 2 is fixedly connected to the top of the support platform 1, and hydraulic telescopic rods 4 3 are fixed at both ends of the support rod 2. A push rod 5 is fixedly connected to the top of the hydraulic telescopic rod 4 3. A pressure plate 4 adapted to the middle mold 16 is fixed on the side of the hydraulic telescopic rod 4 3 close to the mold base 6. The bottom of the push rod 5 is located below the pressure plate 4. The distance between the contact part of the pressure plate 4 with the top of the middle mold 16 and the bottom of the push rod 5 is greater than the distance between the top of the molded part and the top of the middle mold 16. The distance between the pressure plate 4 and the bottom of the push rod 5 is designed according to demand and is not limited here. Through the arrangement of the pressing plate 4 and the pushing rod 5, the extension and retraction of the hydraulic telescopic rod 43 can change the height of the pushing rod 5 and the pressing plate 4 fixedly connected thereto. After the pushing rod 5 pushes the molded part to separate the molded part from the middle mold 16 and the left mold 12 or the right mold 10, the pressing plate 4 presses the middle mold 16, and the pushing rod 5 limits the middle mold 16 to fix the position of the middle mold 16, so that the position of the middle mold 16 remains unchanged during the injection molding process, which is convenient for the use of the equipment.

[0032] Another electromagnet 11 is provided in the middle of the pressure plate 4. Through the setting of the other electromagnet 11, the electrical components involved in the present application of the pressure plate 4 are all prior art. The technicians in this field understand the connection method. Through the technicians in this field, all the electrical components in the present application are connected to the power supply adapted thereto through wires, and according to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence are described below. The electrical connection is completed in the working order of each electrical component. The detailed connection means are well known in the art. The following mainly introduces the working principle and process, and no further explanation is given on the electrical control.

[0033] To sum up: when the injection molding equipment for processing turbine valves is used, if the left mold 12 is tightly fitted with the mold base 6 under the action of the hydraulic telescopic rod 8 connected thereto, a turbine valve component injection molding cavity 1 is formed between the left mold 12 and the middle mold 16, and the hydraulic telescopic rod 43 drives the movable plate 17 to move until the injection molding port 19 on the movable plate 17 moves to the middle of the top of the turbine valve component injection molding cavity 1, and the injection molding material is injected into the turbine valve component injection molding cavity 1 through the injection molding port 19. After the injection molding is completed, the hydraulic telescopic rod 43 drives the movable plate 17 to move in the opposite direction until the injection molding port 19 on the movable plate 17 moves to the top of the matching material receiving frame 7, and the residual material in the injection molding port 19 falls into the material receiving frame 7 under the action of gravity. When the injection molding is completed and the mold needs to be demoulded, the electromagnet 11 on the left mold 12 is in a powered-on state, and the middle mold 16 is magnetically attracted to the electromagnet 11. When the left mold 12 is away from the mold base 6 under the action of the hydraulic telescopic rod 8, the middle mold 16 moves accordingly, and the injection-molded turbine valve parts are pushed out by the middle mold 16. When the distance between the end of the middle mold 16 close to the left mold 12 and the mold base 6 is the same as the thickness of the pressing plate 4, the left mold 12 stops moving, the electromagnet 11 on the left mold 12 is in a powered-on state, and the other electromagnet 11 on the pressing plate 4 is in a powered-on state, and the other electromagnet 11 is magnetically attracted to the middle mold 6 to fix the position of the middle mold 6, and the left mold 12 continues to move until the left mold 1 2 is tightly fitted with the guide rod 9 away from the molded part, at this time, the left mold 12 is separated from the molded part, and the push rod 5 above the molded part moves downward, and the push rod 5 can push the molded part to separate the molded part from the middle mold 16 to realize the demoulding operation until the pressing plate 4 contacts the middle mold 16 to fix the position of the middle mold 16, and in the demoulding process, when the right mold 10 is tightly fitted with the mold base 6 under the action of the hydraulic telescopic rod 2 13 connected thereto, the cavity between the right mold 10 and the middle mold 16 is the injection molding cavity 2 of the turbine valve parts, and when the other injection port 19 on the movable plate 2 15 is located in the middle of the top of the injection molding cavity 2, the equipment can pour materials in the injection molding cavity 2.

[0034] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An injection molding device for processing a steam turbine valve, comprising a support table (1), characterized in that: A mold base (6) is fixed on the top of the support platform (1), a middle mold (16) is movably connected in the inner cavity of the mold base (6), one end of the mold base (6) is connected to a left mold (12) via a hydraulic telescopic rod (8), and the other end of the mold base (6) is connected to a right mold (10) via a hydraulic telescopic rod (13), an electromagnet (11) is fixed in the middle of both the left mold (12) and the right mold (10), and the middle mold (16) is magnetically attracted to the electromagnet (11) in an energized state; A slide groove is provided at the top of the mold base (6) on the side close to the left mold (12), and a movable plate (17) is movably connected in the inner cavity of the slide groove, and an injection port (19) is provided in the middle of one end of the movable plate (17). Another slide groove is provided at the top of the mold base (6) on the side close to the right mold (10), and a movable plate (15) is movably connected in the inner cavity of the other slide groove, and another injection port (19) is provided in the middle of the other end of the movable plate (15), and a material receiving frame (7) is provided on both sides of the top of the mold base (6); The top of the support platform (1) is fixedly connected to a support rod (2), both ends of the support rod (2) are fixedly connected to hydraulic telescopic rods (3), the top of the hydraulic telescopic rods (3) is fixedly connected to a push rod (5), and a pressure plate (4) adapted to the middle mold (16) is fixed to the side of the hydraulic telescopic rods (3) close to the mold base (6), and another electromagnet (11) is provided in the middle of the pressure plate (4).

2. The injection molding equipment for processing steam turbine valves according to claim 1, characterized in that: Guide rods (9) are fixed to both ends of the mold base (6), and the ends of both the left mold (12) and the right mold (10) are movably connected to the guide rods (9).

3. The injection molding equipment for processing steam turbine valves according to claim 1, characterized in that: The bottom of one end of the movable plate 1 (17) close to the injection port (19), the bottom of one end of the movable plate 2 (15) close to the other injection port (19) and the inner wall of the material receiving frame (7) are all fixed with electric heating plates (14).

4. The injection molding equipment for processing steam turbine valves according to claim 1, characterized in that: The movable plate 1 (17) and the movable plate 2 (15) are connected by a connecting rod (18); a hydraulic telescopic rod 3 (20) is fixed to the top of the mold base (6); the other end of the hydraulic telescopic rod 3 (20) is fixedly connected to the middle of the connecting rod (18); and when the injection port (19) is located in the middle of the top of the inner cavity of the mold base (6), the other injection port (19) is located above a material receiving frame (7) adapted thereto.

5. The injection molding equipment for processing steam turbine valves according to claim 1, characterized in that: The bottom of the push rod (5) is located below the pressing plate (4), and the distance between the contact portion of the pressing plate (4) with the top of the middle mold (16) and the bottom of the push rod (5) is greater than the distance between the top of the molded part and the top of the middle mold (16).

6. The injection molding equipment for processing steam turbine valves according to claim 1, characterized in that: The left mold (12) and the right mold (10) both include a mold plate adapted to the inner cavity of the mold base (6) and a positioning plate movably connected to the guide rod (9); one end of the positioning plate close to the mold base (6) is fixedly connected to the mold plate.

7. The injection molding equipment for processing steam turbine valves according to claim 6, characterized in that: The distance between the middle mold (16) and the left mold (12) is equal to the distance between the middle mold (16) and the right mold (10), and when the positioning plate is in contact with the mold base (6), the end of the middle mold (16) away from the positioning plate in contact with the mold base (6) is located outside the mold base (6).

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