Manufacturing device and manufacturing method of low-temperature swing check valve

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Through the manufacturing device of the low-temperature swing check valve, the design of hydraulic telescopic rod and mold inner core is solved, and the problem of difficult reuse of sand and internal bubbles in the casting process of the check valve in the prior art is achieved, and efficient metal material forming is achieved and quality improvement.

CN119387503APending Publication Date: 2025-02-07SHANGHAI KAIKE VALVE MFG

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Patent Information

Application Number: CN202411824672.4
Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner
Filing Date: 2024-12-12
Publication Date: 2025-02-07

AI Technical Summary

Technical Problem

During the casting process, the existing check valves are difficult to reuse the molded sand, have low production capacity, and are prone to internal bubbles, which affects the quality of the cast steel parts.

Method used

The manufacturing device adopts a low-temperature swing check valve, which includes a base plate frame, a hydraulic telescopic rod and a mold inner core. The outer mold frame is driven by a hydraulic telescopic rod to close, form a molding cavity, and make the first by a driving motor and a connecting member. The inner core of the mold swings, vibrating the metal material to expel air.

Benefits of technology

It improves the reuse rate of the mold and the efficiency of mass production, effectively removes air inside the metal material, and improves the quality of cast steel parts.

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Abstract

The low-temperature swing check valve manufacturing device comprises a bottom plate frame, extension plates are arranged on the two sides of the bottom plate frame, a sliding plate is arranged at the bottom end of the bottom plate frame in a sliding mode, and a motor fixing frame is arranged on the top side of the sliding plate. The invention relates to the technical field of swing check valves. According to the manufacturing device and method for the low-temperature swing check valve, the first mold inner core and the second mold inner core are connected with each other and form a whole in the forming cavity, molten metal materials are injected into the forming cavity, gaps in the forming cavity are filled with the metal materials, mold casting is completed, and in the demolding process, the metal materials are poured into the forming cavity to form a whole. The second mold inner core moves upwards to be separated from the product, then the hydraulic telescopic rod is started, the two outer mold frames are separated from each other, then the product is manually pulled out of the outer wall of the first mold inner core, demolding is completed, the mold can be repeatedly used, and the production efficiency during batch production can be effectively improved.

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Description

Technical Field

[0001] The present invention relates to the technical field of swing check valves, and in particular to a manufacturing device and a manufacturing method of a low-temperature swing check valve. Background Art

[0002] The check valve consists of a valve body, a check plate, a sealing ring and a spring, among which the most important valve body is mainly made by casting.

[0003] In addition, the valve seat is usually cast by sand casting during the casting process. However, after the valve seat is manufactured, the used molding sand is generally difficult to reuse, and the casting capacity is low during mass production.

[0004] In addition, during the casting process of the sand casting method, only an exhaust port is set to exhaust the air inside the mold. However, due to the high density of the metal in the molten state, some air is not easy to pass through the molten iron, so it is easy to form a large number of bubbles on the inner wall of the valve seat. Although the surface quality of some parts looks intact, once processed, the internal sand holes, air holes, and shrinkage holes will emerge, seriously affecting the quality of the steel castings.

[0005] Therefore, those skilled in the art provide a manufacturing device and a manufacturing method of a low-temperature swing check valve to solve the problems raised in the above background technology. Summary of the invention

[0006] The object of the present invention is to provide a manufacturing device and a manufacturing method of a low-temperature swing check valve to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] According to one aspect of the invention, a manufacturing device for a low-temperature swing check valve is provided.

[0009] The manufacturing device of the low-temperature swing check valve comprises a bottom plate frame, extension plates are arranged on both sides of the bottom plate frame, a sliding plate is slidably arranged at the bottom end of the bottom plate frame, a motor fixing frame is arranged on the top side of the sliding plate, a driving motor is arranged inside the motor fixing frame, a connecting piece is arranged at the motor shaft of the driving motor, and a first mold inner core is arranged at one end of the connecting piece away from the motor shaft of the driving motor;

[0010] A plurality of hydraulic telescopic rods are arranged on the opposite side of the two extension plates, and an outer mold frame is arranged at the telescopic end of the hydraulic telescopic rod. The outer mold frames on both sides are arranged relatively to each other, and an extension push plate is arranged at the top of the extension plate. The side wall of the extension push plate is arranged with an electric splint, and the second mold core is commonly connected between the electric splints on both sides.

[0011] Furthermore, the outer mold frame includes a valve seat portion and a valve cover portion, the valve seat portion and the valve cover portion are fixedly connected and have a valve body cavity opened inside, a closing plate is provided at one end of the valve seat portion, a fixing plate is threadedly connected to the side wall of the valve seat portion, and the fixing plate is fixedly connected to the telescopic end of the hydraulic telescopic rod.

[0012] Furthermore, the connecting member includes a strip plate, which is fixedly connected to the motor shaft of the driving motor, a connecting frame is provided on the outer peripheral wall of the strip plate, a sliding rail is provided inside the connecting frame, and the strip plate is inserted into the inside of the sliding rail, and the strip plate and the connecting frame are slidably matched.

[0013] Furthermore, the inner core of the first mold includes a first insert tube, which is rotatably connected to the connecting frame. A closing baffle is fixedly provided on the outer peripheral wall of the first insert tube and at a position corresponding to the side wall of the valve seat portion. The diameter of the closing baffle is larger than the diameter of the valve seat portion. A positioning hole is opened on the outer peripheral wall of the first insert tube and at a position corresponding to the valve cover portion.

[0014] Furthermore, an adjusting motor is arranged at the top end of the connecting frame, and an adjusting screw is arranged at the bottom end of the adjusting motor. The adjusting screw passes through the strip plate and cooperates with the thread of the strip plate.

[0015] Furthermore, the inner core of the second mold includes a second insert tube, a clamping plate is provided at the top end of the outer peripheral wall of the second insert tube, the clamping plate cooperates with the electric clamping plate, a pouring hole and an exhaust hole are opened at the top end of the clamping plate, the bottom end of the second insert rod is arc-shaped and cooperates with the outer peripheral wall of the first insert tube, and a positioning rod cooperating with the positioning hole is provided at the bottom end of the second insert tube.

[0016] Furthermore, a positioning plate is provided on the side wall of the fixing plate, and the positioning plate is slidably connected to the fixing plate via an electric slider and a guide groove.

[0017] Furthermore, an adjusting motor is arranged at a position corresponding to the sliding plate at the bottom end of the base frame, a transmission screw is fixedly arranged on the motor shaft of the adjusting motor, a transmission screw hole is arranged at the bottom end of the sliding plate, and the transmission screw hole cooperates with the transmission screw thread.

[0018] According to another aspect of the present invention, a method for manufacturing a low-temperature swing check valve is provided, which is used for a manufacturing device for the above-mentioned low-temperature swing check valve.

[0019] The manufacturing method of the low-temperature swing check valve comprises the following steps:

[0020] S101, mold installation, installing two outer mold frames on the telescopic ends of the hydraulic telescopic rods on both sides, and moving one end of the closing plate away from the driving motor, then installing the first mold core on the motor shaft of the driving motor through a connecting piece, and then clamping and fixing the second mold core through the electric clamps on both sides;

[0021] S102, the mold is closed, and the hydraulic telescopic rods on both sides are started to close the two outer mold frames to each other, so that the inner part of the outer mold frame forms a molding cavity, and then the sliding plate is pushed to move by adjusting the settings of the motor and the transmission screw, so that the first mold inner core is inserted into the inner part of the molding cavity, and then the electric clamping plate is controlled to move downward by extending the movement of the push plate, so that the second mold inner core and the outer peripheral wall of the first mold inner core are attached to each other;

[0022] S103, pouring, pouring the molten metal material into the molding cavity through the pouring hole until part of the metal material overflows from the exhaust hole, and then driving the motor and the connecting piece to make the inner core of the first mold swing, so that the metal material inside the molding mold fluctuates, and the first mold stops swinging after swinging for a period of time;

[0023] S104, positioning, sliding the positioning plates to the side walls of the first mold inner core respectively, and pushing the first mold inner core to a position coaxial with the valve seat portion;

[0024] S105, cooling, waiting for the mold to cool completely;

[0025] S106, demoulding, firstly, control the electric clamp to move upward by extending the push plate, so that the inner core of the second mold moves upward, so that the inner core of the second mold is separated from the product, and then start the hydraulic telescopic rods on both sides to separate the two outer mold frames from each other. At this time, the product is sleeved on the outer wall of the inner core of the first mold, and then the mold is pulled out from the outer wall of the inner core of the first mold to complete the demoulding.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. A manufacturing device for a low-temperature swing check valve, wherein a first mold inner core and a second mold inner core are connected to each other and form a whole inside a molding cavity, and a molten metal material is injected into the molding cavity so that the metal material fills the gap inside the molding cavity to complete the casting, and when demolding, the second mold inner core moves upward and separates from the product, and then the hydraulic telescopic rod is started to separate the two outer mold frames from each other, and then the product is manually extracted from the outer wall of the first mold inner core to complete demolding, so that the mold can be reused, and the production efficiency during mass production can be effectively improved;

[0028] 2. A manufacturing device for a low-temperature swing check valve controls the rotation of an adjusting screw by adjusting the setting of a motor. When the adjusting screw rotates, the strip plate cooperates to cause the connecting frame to be offset. At this time, the connecting frame is not coaxial with the motor shaft of the driving motor. Therefore, when the driving motor rotates, the connecting frame will swing, thereby driving the first insert to swing synchronously, thereby achieving the effect of vibrating the interior of the molding cavity, thereby effectively allowing the air inside the metal material to be fully discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 is a structural schematic diagram of a manufacturing device for a low-temperature swing check valve according to an embodiment of the present invention;

[0031] Figure 2 2 is a schematic structural diagram of a bottom plate frame of a manufacturing device for a low-temperature swing check valve according to an embodiment of the present invention;

[0032] Figure 3 It is a structural schematic diagram of a connecting piece of a manufacturing device for a low-temperature swing check valve according to an embodiment of the present invention;

[0033] Figure 4 2 is a schematic structural diagram of an outer mold frame of a manufacturing device for a low-temperature swing check valve according to an embodiment of the present invention;

[0034] Figure 5 Schematic diagram of the internal structure of an outer mold frame of a manufacturing device for a low-temperature swing check valve according to an embodiment of the present invention;

[0035] Figure 6 It is a structural schematic diagram of a first mold inner core and a second mold inner core of a manufacturing device for a low-temperature swing check valve according to an embodiment of the present invention;

[0036] Figure 7 A manufacturing device for a low-temperature swing check valve according to an embodiment of the present invention Figure 1 A magnified view of the structure at A;

[0037] Figure 8 2 is a schematic structural diagram of a low-temperature swing check valve according to a manufacturing device of a low-temperature swing check valve according to an embodiment of the present invention;

[0038] Fig. 9 The diagram is a planar structural diagram of a connector of a manufacturing device for a low-temperature swing check valve according to an embodiment of the present invention.

[0039] Reference numerals:

[0040] 1. Bottom plate frame; 2. Extension plate; 3. Sliding plate; 4. Motor fixing frame; 5. Driving motor; 6. Connecting piece; 61. Strip plate; 62. Connecting frame; 63. Sliding rail; 64. Adjusting motor; 65. Adjusting screw; 7. First mold core; 71. First insert tube; 72. Closing baffle; 73. Positioning hole; 8. Hydraulic telescopic rod; 9. Outer mold frame; 91. Valve seat; 92. Valve cover; 93. Valve body cavity; 94. Closing plate; 95. Fixing plate; 96. Positioning plate; 97. Electric slider; 98. Guide groove; 10. Extension push plate; 11. Electric clamping plate; 12. Second mold core; 121. Second insert tube; 122. Clamping plate; 123. Casting hole; 124. Exhaust hole; 125. Positioning rod; 13. Adjusting motor; 14. Transmission screw; 15. Transmission screw hole. DETAILED DESCRIPTION

[0041] Below, the invention is further described in conjunction with the accompanying drawings and specific embodiments:

[0042] Embodiment 1:

[0043] Reference Figure 1 - Fig. 9 The present invention discloses a manufacturing device for a low-temperature swing check valve, comprising a bottom plate frame 1, extension plates 2 are arranged on both sides of the bottom plate frame 1, a sliding plate 3 is slidably arranged at the bottom end of the bottom plate frame 1, a motor fixing frame 4 is arranged on the top side of the sliding plate 3, a driving motor 5 is arranged inside the motor fixing frame 4, a connecting piece 6 is arranged at the motor shaft of the driving motor 5, and a first mold inner core 7 is arranged at one end of the connecting piece 6 away from the motor shaft of the driving motor 5;

[0044] A plurality of hydraulic telescopic rods 8 are arranged on the opposite sides of the two extension plates 2, and an outer mold frame 9 is arranged at the telescopic end of the hydraulic telescopic rod 8. The outer mold frames 9 on both sides are arranged relatively to each other, and an extension push plate 10 is arranged on the top of the extension plate 2. The extension push plate 10 includes a bottom sleeve, and a lifting plate is slidingly arranged inside the bottom sleeve. The bottom end of the bottom sleeve is externally connected to a hydraulic pump for controlling the lifting plate to move up and down. An electric clamping plate 11 is arranged on the side wall of the extension push plate 10. The electric clamping plate 11 includes a transverse plate, which is fixedly connected to the side wall of the lifting plate. An electric telescopic joint is arranged at one end of the transverse plate away from the lifting plate, and an arc-shaped clamping groove matching the clamping plate 122 is arranged at one end of the electric telescopic joint away from the transverse plate, and a second mold core 12 is commonly connected between the electric clamping plates 11 on both sides.

[0045] Also includes a swing check valve body, such as Figure 8 As shown, the reference numeral P is the swing check valve body, P1 is the valve cover portion 92 of the check valve, P2 is the valve seat portion 91 of the check valve, P3 is the valve plate of the check valve, and P4 is the rotating mounting member of the valve plate of the check valve.

[0046] In this embodiment, two outer mold frames 9 are respectively installed at the telescopic ends of the hydraulic telescopic rods 8 on both sides, and one end of the closing plate 94 is away from the driving motor 5. The telescopic rods of the liquid medicine are controlled by an external hydraulic pump, so that the hydraulic telescopic rods 8 push the two outer mold frames 9 to move relative to each other, so that the two outer mold frames 9 are closed, and the valve body cavities 93 inside the outer mold frames 9 jointly form a molding cavity;

[0047] Then, the first mold core 7 is installed on the motor shaft of the driving motor 5 through the connecting member 6, and the first mold core 7 is inserted into the molding cavity by moving the sliding plate 3;

[0048] Then the second mold core 12 is clamped and fixed by the electric clamps 11 on both sides, and the push plate 10 is extended and moved downward, so that the second mold core 12 is inserted into the molding cavity. At this time, the first mold core 7 and the second mold core 12 are connected to each other and form a whole inside the molding cavity. When the molten metal material is injected into the molding cavity, Figure 5 As shown, the metal material fills the gap inside the molding cavity to complete the casting mold;

[0049] The first mold core 7 is swung by driving the motor 5 in coordination with the connecting piece 6, so that the metal material inside the molding mold fluctuates, so that the air inside the metal material can be fully discharged. After the air is discharged, the metal material is cooled and solidified, and the injection molding is completed.

[0050] After the injection molding is completed, the electric clamping plate 11 is controlled to move upward by extending the movement of the push plate 10, so that the second mold core 12 moves upward and the second mold core 12 is separated from the product, and then the hydraulic telescopic rods 8 on both sides are started to separate the two outer mold frames 9 from each other. At this time, the product is sleeved on the outer wall of the first mold core 7, and then the product is manually pulled out from the outer wall of the first mold core 7 to complete the demolding.

[0051] In a further preferred embodiment of the present invention, Figure 1-9 As shown, the outer mold frame 9 includes a valve seat portion 91 and a valve cover portion 92, the valve seat portion 91 and the valve cover portion 92 are fixedly connected, and a valve body cavity 93 is commonly opened inside, a closing plate 94 is provided at one end of the valve seat portion 91, and a fixing plate 95 is threadedly connected to the side wall of the valve seat portion 91, and the fixing plate 95 is fixedly connected to the telescopic end of the hydraulic telescopic rod.

[0052] In this embodiment, when the two outer mold frames 9 are in contact with each other, the valve seat portion 91, the valve cover portion 92 and the valve body cavity 93 together form a complete mold with a molding cavity inside, and the molding cavity has three openings. The closing plate 94 is provided to close one of the openings of the molding cavity, and the fixing plate 95 is used to fix the outer mold frame 9 to the telescopic end of the hydraulic telescopic rod 8.

[0053] In a further preferred embodiment of the present invention, Figure 1-9 As shown, the connecting member 6 includes a strip plate 61, which is fixedly connected to the motor shaft of the driving motor 5. A connecting frame 62 is provided on the outer peripheral wall of the strip plate 61. A sliding rail 63 is provided inside the connecting frame 62, and the strip plate 61 is inserted into the inside of the sliding rail 63. The strip plate 61 and the connecting frame 62 are slidably matched.

[0054] In this embodiment, the motor shaft of the drive motor 5 and the connecting frame 62 are connected to each other through the arrangement of the strip plate 61 and the sliding rail 63. Since the strip plate 61 is arranged in a strip shape and is fixedly connected to the motor shaft of the drive motor 5, when the strip plate 61 is located at the center of the sliding rail 63, the motor shaft of the drive motor 5 is coaxially arranged with the connecting frame 62. Therefore, when the drive motor 5 rotates, it can drive the connecting frame 62 to rotate.

[0055] In a further preferred embodiment of the present invention, Figure 1-9 As shown, the first mold core 7 includes a first insert tube 71, which is rotatably connected to the connecting frame 62, and a closing baffle 72 is fixedly provided on the outer peripheral wall of the first insert tube 71 and at a position corresponding to the side wall of the valve seat portion 91, and the diameter of the closing baffle 72 is larger than the diameter of the valve seat portion 91, and a positioning hole 73 is opened at a position of the outer peripheral wall of the first insert tube 71 and corresponding to the valve cover portion 92.

[0056] In this embodiment, when the first insert tube 71 is inserted into the molding cavity, the closing baffle 72 closes the other opening of the molding cavity, and the closing baffle 72 corresponds to the closing plate 94. At this time, both openings at the bottom end of the molding cavity are in a closed state.

[0057] In a further preferred embodiment of the present invention, Figure 1-9 As shown, an adjusting motor 64 is disposed at the top end of the connecting frame 62 , and an adjusting screw 65 is disposed at the bottom end of the adjusting motor 64 . The adjusting screw 65 penetrates through the strip plate 61 and is threadedly engaged with the strip plate 61 .

[0058] In this embodiment, the motor 64 is adjusted to control the rotation of the adjusting screw 65. Fig. 9 As shown, when the adjusting screw 65 rotates, the strip plate 61 cooperates to cause the connection frame 62 to deviate. At this time, the connection frame 62 is not coaxial with the motor shaft of the driving motor 5. Therefore, when the driving motor 5 rotates, the connection frame 62 will swing, thereby driving the first insert 71 to swing synchronously, achieving the effect of vibrating the inside of the molding cavity, thereby effectively allowing the air inside the metal material to be fully discharged;

[0059] Furthermore, since the diameter of the closing baffle 72 is larger than the inner diameter of the valve seat portion 91 , the molding cavity can also be closed when the first insert pipe 71 is vibrated, which can effectively avoid leakage of the molding cavity.

[0060] In a further preferred embodiment of the present invention, Figure 1-9 As shown, the second mold core 12 includes a second insert tube 121, and a clamping plate 122 is arranged at the top end of the outer peripheral wall of the second insert tube 121. The clamping plate 122 cooperates with the electric clamping plate 11, and a pouring hole 123 and an exhaust hole 124 are opened at the top end of the clamping plate 122. The bottom end of the second insert rod is arc-shaped and cooperates with the outer peripheral wall of the first insert tube 71. The bottom end of the second insert tube 121 is provided with a positioning rod 125 that cooperates with the positioning hole 73.

[0061] In this embodiment, when the second tube 121 is inserted into the molding cavity, the positioning rod 125 is inserted into the positioning hole 73, so that the second tube 121 is connected to the first tube 71, and then when the first tube 71 is deflected, it can drive the second tube 121 to vibrate synchronously, thereby achieving the purpose of improving the exhaust efficiency.

[0062] In a further preferred embodiment of the present invention, Figure 1-9 As shown, a positioning plate 96 is provided on the side wall of the fixing plate 95 , and the positioning plate 96 is slidably connected to the fixing plate 95 via an electric slider 97 and a guide groove 98 .

[0063] In this embodiment, the electric slider 97 and the guide groove 98 are provided to slidingly connect the positioning plate 96 with the fixed plate 95, and the electric slider 97 is controlled by an external power supply to slide inside the guide groove 98 to control the movement of the positioning plate 96. After the air inside the metal material is completely discharged, the positioning slider, under the control of the electric slider 97, synchronously approaches the axis of the first insert tube 71, so that the arc groove opened on the positioning slider contacts the outer wall of the closed baffle 72. Since the arc groove opened at the end of the positioning slider is equal to the diameter of the outer peripheral wall of the closed baffle 72, and when the positioning slider moves to one end of the guide groove 98 close to the valve seat portion 91, the arc groove and the valve seat portion 91 are coaxially arranged, and then when the arc groove is in close contact with the outer wall of the closed baffle 72, the closed baffle 72 can be coaxially arranged with the valve seat portion 91.

[0064] In a further preferred embodiment of the present invention, Figure 1-9 As shown, an adjusting motor 13 is arranged at the bottom end of the base frame 1 and at a position corresponding to the sliding plate 3, a driving screw 14 is fixedly arranged on the motor shaft of the adjusting motor 13, a driving screw hole 15 is arranged at the bottom end of the sliding plate 3, and the driving screw hole 15 is threadably matched with the driving screw 14.

[0065] In this embodiment, the setting of the motor 13, the transmission screw 14 and the transmission screw hole 15 is adjusted to control the movement of the sliding plate 3, so as to achieve the purpose of controlling the movement of the first mold core 7.

[0066] Embodiment 2:

[0067] According to another aspect of the present invention, a method for manufacturing a low-temperature swing check valve is provided.

[0068] The manufacturing method of the low-temperature swing check valve comprises the following steps:

[0069] S101, mold installation, two outer mold frames 9 are respectively installed on the telescopic ends of the hydraulic telescopic rods 8 on both sides, and one end of the closing plate 94 is away from the driving motor 5, and then the first mold core 7 is installed on the motor shaft of the driving motor 5 through the connecting piece 6, and then the second mold core 12 is clamped and fixed by the electric clamps 11 on both sides;

[0070] S102, the mold is closed, and the hydraulic telescopic rods 8 on both sides are started to close the two outer mold frames 9 to each other, so that the inner part of the outer mold frame 9 forms a molding cavity, and then the sliding plate 3 is pushed to move by adjusting the settings of the motor 13 and the transmission screw 14, so that the first mold inner core 7 is inserted into the inner part of the molding cavity, and then the electric clamping plate 11 is controlled to move downward by extending the movement of the push plate 10, so that the second mold inner core 12 and the outer peripheral wall of the first mold inner core 7 are attached to each other;

[0071] S103, pouring, pouring the molten metal material into the interior of the molding cavity through the pouring hole 123 until some of the metal material overflows from the exhaust hole 124, and then driving the motor 5 in conjunction with the connecting piece 6 to make the first mold core 7 swing, so that the metal material inside the molding mold fluctuates, and the first mold stops swinging after swinging for a period of time;

[0072] S104, positioning, sliding the positioning plates 96 to the side walls of the first mold core 7, and pushing the first mold core 7 to a position coaxial with the valve seat portion 91;

[0073] S105, cooling, waiting for the mold to cool completely;

[0074] S106, demoulding, firstly, extend the push plate 10 to control the electric clamping plate 11 to move upward, so that the second mold core 12 moves upward, so that the second mold core 12 is separated from the product, and then start the hydraulic telescopic rods 8 on both sides to separate the two outer mold frames 9 from each other. At this time, the product is sleeved on the outer wall of the first mold core 7, and then the mold is pulled out from the outer wall of the first mold core 7 to complete the demoulding.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manufacturing device for a low-temperature swing check valve, characterized in that: The invention comprises a bottom plate frame (1), extension plates (2) are arranged on both sides of the bottom plate frame (1), a sliding plate (3) is slidably arranged at the bottom end of the bottom plate frame (1), a motor fixing frame (4) is arranged on the top side of the sliding plate (3), a driving motor (5) is arranged inside the motor fixing frame (4), a connecting piece (6) is arranged at the motor shaft of the driving motor (5), and a first mold inner core (7) is arranged at one end of the connecting piece (6) away from the motor shaft of the driving motor (5); A plurality of hydraulic telescopic rods (8) are arranged on opposite sides of the two extension plates (2), and an outer mold frame (9) is arranged at the telescopic end of the hydraulic telescopic rod (8). The outer mold frames (9) on both sides are arranged opposite to each other, and an extension push plate (10) is arranged at the top of each extension plate (2). An electric clamping plate (11) is arranged on the side wall of the extension push plate (10), and a second mold inner core (12) is commonly connected between the electric clamping plates (11) on both sides.

2. A manufacturing device for a low-temperature swing check valve according to claim 1, characterized in that: The outer mold frame (9) includes a valve seat portion (91) and a valve cover portion (92); the valve seat portion (91) and the valve cover portion (92) are fixedly connected and have a valve body cavity (93) formed therein; a closing plate (94) is provided at one end of the valve seat portion (91); a fixing plate (95) is threadedly connected to the side wall of the valve seat portion (91); and the fixing plate (95) is fixedly connected to the telescopic end of the hydraulic telescopic rod (8).

3. A manufacturing device for a low-temperature swing check valve according to claim 2, characterized in that: The connecting member (6) comprises a strip plate (61), the strip plate (61) is fixedly connected to the motor shaft of the driving motor (5), a connecting frame (62) is arranged on the outer peripheral wall of the strip plate (61), a sliding rail (63) is arranged inside the connecting frame (62), and the strip plate (61) is inserted into the inside of the sliding rail (63), and the strip plate (61) and the connecting frame (62) are slidably matched.

4. A manufacturing device for a low-temperature swing check valve according to claim 3, characterized in that: The first mold inner core (7) includes a first insert tube (71), the first insert tube (71) is rotatably connected to the connecting frame (62), a closing baffle (72) is fixedly provided on the outer peripheral wall of the first insert tube (71) and at a position corresponding to the side wall of the valve seat portion (91), the diameter of the closing baffle (72) is larger than the diameter of the valve seat portion (91), and a positioning hole (73) is opened at a position of the outer peripheral wall of the first insert tube (71) corresponding to the valve cover portion (92).

5. A manufacturing device for a low-temperature swing check valve according to claim 4, characterized in that: The top end of the connection frame (62) is provided with an adjusting motor (64), the bottom end of the adjusting motor (64) is provided with an adjusting screw (65), and the adjusting screw (65) passes through the strip plate (61) and is threadedly matched with the strip plate (61).

6. A manufacturing device for a low-temperature swing check valve according to claim 5, characterized in that: The second mold inner core (12) includes a second insert tube (121), a clamping plate (122) is arranged at the top end of the outer peripheral wall of the second insert tube (121), the clamping plate (122) cooperates with the electric clamping plate (11), a pouring hole (123) and an exhaust hole (124) are opened at the top end of the clamping plate (122), the bottom end of the second insert rod is arc-shaped and cooperates with the outer peripheral wall of the first insert tube (71), and a positioning rod (125) cooperating with the positioning hole (73) is arranged at the bottom end of the second insert tube (121).

7. A manufacturing device for a low-temperature swing check valve according to claim 6, characterized in that: A positioning plate (96) is provided on the side wall of the fixing plate (95), and the positioning plate (96) is slidably connected to the fixing plate (95) via an electric slider (97) and a guide groove (98).

8. The manufacturing device of a low-temperature swing check valve according to claim 7, characterized in that: An adjusting motor (13) is arranged at a position at the bottom end of the base frame (1) corresponding to the sliding plate (3); a driving screw (14) is fixedly arranged on the motor shaft of the adjusting motor (13); a driving screw hole (15) is arranged at the bottom end of the sliding plate (3), and the driving screw hole (15) is threadedly matched with the driving screw (14).

9. A method for manufacturing a low-temperature swing check valve, characterized in that: A manufacturing device for any low-temperature swing check valve according to any one of claims 1 to 8, comprising the following steps: S101, mold installation, two outer mold frames (9) are respectively installed on the telescopic ends of the hydraulic telescopic rods (8) on both sides, and one end of the closing plate (94) is away from the driving motor (5), and then the first mold core (7) is installed on the motor shaft of the driving motor (5) through the connecting piece (6), and then the second mold core (12) is clamped and fixed by the electric clamps (11) on both sides; S102, the mold is closed, and the hydraulic telescopic rods (8) on both sides are started to close the two outer mold frames (9) to each other, so that a molding cavity is formed inside the outer mold frame (9), and then the sliding plate (3) is pushed to move by adjusting the settings of the motor (13) and the transmission screw (14), so that the first mold core (7) is inserted into the molding cavity, and then the electric clamping plate (11) is controlled to move downward by extending the push plate (10), so that the second mold core (12) and the outer peripheral wall of the first mold core (7) are mutually fitted; S103, pouring, pouring the molten metal material into the interior of the molding cavity through the pouring hole (123), until part of the metal material overflows from the exhaust hole (124), and then driving the motor (5) in conjunction with the connecting piece (6) to cause the first mold core (7) to swing, causing the metal material inside the molding mold to fluctuate, and after the first mold swings for a period of time, the swinging stops; S104, positioning, sliding the positioning plates (96) to the side walls of the first mold inner core (7), and pushing the first mold inner core (7) to a position coaxial with the valve seat portion (91); S105, cooling, waiting for the mold to cool completely; S106, demoulding, firstly, by extending the movement of the push plate (10), the electric clamping plate (11) is controlled to move upward, so that the second mold core (12) moves upward, and the second mold core (12) is separated from the product, and then the hydraulic telescopic rods (8) on both sides are started to separate the two outer mold frames (9) from each other. At this time, the product is mounted on the outer wall of the first mold core (7), and the mold is pulled out from the outer wall of the first mold core (7) to complete the demoulding.