Casting mold for gearbox turbine

Abstract

The utility model discloses a casting mold for a gearbox turbine, and relates to the technical field of molds, in particular to a casting mold for a gearbox turbine, which comprises a bottom plate, a casting mechanism is arranged on the bottom plate and is used for closing the mold, and a demolding mechanism is arranged on the casting mechanism and is used for demolding a workpiece. The casting mechanism comprises a tool assembly which comprises a base fixed to the top of a bottom plate, a lower mold fixed to the top of the base, an upper mold arranged above the lower mold and a top plate arranged above the upper mold; the sealing assembly comprises sliding frames fixed to the two sides of the bottom of the top plate, sliding bases slidably installed in the sliding frames in a penetrating mode, arc-shaped grooves formed in the upper ends of the interiors of the sliding bases, sliding blocks slidably installed on the two sides of the interiors of the arc-shaped grooves, and eccentric circles rotationally installed at one ends of the sliding blocks. The upper mold and the lower mold are further sealed through the sealing assembly after being closed, and it is guaranteed that leakage does not occur in the casting process.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a casting mold for a gearbox turbine. Background Art

[0002] In oil extraction, some heavy machinery and equipment use gearbox turbines for efficient operation, especially those that require precise control of speed and torque; the casting mold of the gearbox turbine is a key tool for producing gearbox turbines. This mold is usually made of high-strength and high-heat-resistant materials to ensure stability and durability under high temperature and high pressure environments;

[0003] During the casting process, the mold will be preheated to reduce the temperature difference between the metal liquid and the mold, reduce thermal stress and improve casting quality. Then, the molten metal liquid will be injected into the mold cavity and gradually solidify into the shape of the turbine during the cooling process.

[0004] After checking the publication (announcement) number: CN215918864U, a mold for automobile turbine production that is easy to demould is disclosed. This technology discloses "a mold for automobile turbine production that is easy to demould, which includes a bottom plate, two brackets are symmetrically installed on the top of the bottom plate, and a lower mold is arranged between the two brackets. Both ends of the lower mold are equipped with rotating shafts, one of which is connected to the corresponding bracket through a bearing, and the other rotating shaft movably passes through the corresponding bracket and is equipped with a turntable located outside the corresponding bracket at one end, and a first fixing mechanism for fixing the turntable is arranged on the bottom plate, and an upper mold is arranged on the top of the lower mold. A top plate located above the upper mold is fixed on the tops of the two brackets, and a driving mechanism for driving the upper mold to move up and down is arranged on the top plate. The technical scheme has "after the turbine is produced, the lower mold can be turned over by the action of the first fixing mechanism, so that the turbine in the lower mold falls onto the bottom plate, thereby facilitating the removal of the turbine" and other technical effects;

[0005] In the above scheme, in order to facilitate the removal of the cast turbine, the method of flipping the lower mold is adopted. However, during the flipping process, the fit between the mold and the turbine workpiece is not tight enough or there is friction, and the surface of the turbine may be scratched or deformed, which will have an adverse effect on the quality and performance of the workpiece, especially for those turbine workpieces with extremely high precision requirements. Such slight changes may be unacceptable; secondly, when the flipped lower mold is reset and closed with the upper mold, the previous flipping operation may cause slight displacement or deformation of the mold, resulting in poor sealing after closing the mold, which may further affect the stability of the casting process and the quality of the casting. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a casting mold for a gearbox turbine, which has the characteristics of being further sealed by a sealing component after the upper mold and the lower mold are molded together to ensure that no leakage occurs during the casting process.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a casting mold for a gearbox turbine, comprising a bottom plate, a casting mechanism is provided on the bottom plate and is used for closing the mold, a demoulding mechanism is provided on the casting mechanism and is used for demoulding the workpiece, and the casting mechanism comprises:

[0008] The tooling assembly includes a base fixed on the top of the bottom plate, a lower mold fixed on the top of the base, an upper mold arranged above the lower mold, and a top plate arranged above the upper mold;

[0009] The sealing assembly includes a slide fixed on both sides of the bottom of the top plate, a slide seat slidably installed inside the slide, an arc groove opened at the upper end of the slide seat, and sliders slidably installed on both sides of the arc groove, an eccentric circle rotatably installed at one end of the slider, and a gear fixed at the other end of the eccentric circle, a mounting frame fixed at one end of the slide, and a motor installed on the mounting frame for driving one of the gears to rotate.

[0010] Preferably, the tooling assembly also includes a balance rod fixed at the four corners of the top of the base plate, and the top of the balance rod is fixed to the bottom of the top plate, a cylinder is installed on both sides of the top of the top plate, and a connecting piece is slidably installed at the output end of the cylinder, and the bottom of the connecting piece is fixed to the top of the upper mold.

[0011] Preferably, the outer edge of the outer end of the eccentric circle is rotatably connected to the slider, and the inner end axis of the eccentric circle is fixedly connected to the gear.

[0012] Preferably, the two gears on the same side are meshed for transmission.

[0013] Preferably, the cylinder is installed on the front and rear sides of the top of the top plate, and the slide is installed on the left and right sides of the bottom of the top plate.

[0014] Preferably, the demoulding mechanism includes a push rod slidably installed transversely at the front end of the base, a guide frame fixed at the rear end of the push rod, and a convex rod slidably installed on the guide frame, and the convex rod penetrates the upper end of the base and is slidably installed.

[0015] Beneficial Effects

[0016] The utility model provides a casting mold for a gearbox turbine. Compared with the prior art, it has the following beneficial effects:

[0017] (1) After the mold is closed, the output end of the motor drives the gear to rotate, and the gear drives the slide to move downward through the eccentric circle and the slider, so that the slide presses the upper mold downward, so that the upper mold and the lower mold are further sealed after the mold is closed, ensuring that no leakage occurs during the casting process.

[0018] (2) After the lower mold and the upper mold are opened, the guide frame is driven by pushing the push rod, and the guide frame drives the protruding rod to move upward through the slide groove, so that the turbine workpiece is pushed upward from the lower mold, thereby facilitating demoulding of the turbine workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the sealing component in the utility model;

[0021] Figure 3 It is a structural schematic diagram of the eccentric circle in the utility model;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the connecting piece in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the demoulding mechanism in the utility model.

[0024] In the figure: 1. bottom plate; 2. casting mechanism; 21. tooling assembly; 211. base; 212. lower mold; 213. top plate; 214. balance bar; 215. upper mold; 216. cylinder; 217. connector; 22. sealing assembly; 221. slide; 222. slide seat; 223. arc groove; 224. slider; 225. eccentric circle; 226. gear; 227. mounting frame; 228. motor; 3. demoulding mechanism; 31. push rod; 32. guide frame; 33. convex rod. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-5 The utility model provides a technical solution for a casting mold of a gearbox turbine: a casting mold of a gearbox turbine, comprising a bottom plate 1, a casting mechanism 2 is arranged on the bottom plate 1 and is used for closing the mold, a demoulding mechanism 3 is arranged on the casting mechanism 2 and is used for demoulding the workpiece, and the casting mechanism 2 comprises:

[0027] The tooling assembly 21 includes a base 211 fixed on the top of the bottom plate 1, a lower mold 212 fixed on the top of the base 211, an upper mold 215 arranged above the lower mold 212, and a top plate 213 arranged above the upper mold 215;

[0028] The sealing assembly 22 includes a slide 221 fixed on both sides of the bottom of the top plate 213, a slide seat 222 slidably installed inside the slide 221, an arc groove 223 opened at the upper end of the slide seat 222, and sliders 224 slidably installed on both sides of the arc groove 223, an eccentric circle 225 rotatably installed at one end of the slider 224, and a gear 226 is fixed to the other end of the eccentric circle 225, a mounting frame 227 fixed at one end of the slide 221, and a motor 228 installed on the mounting frame 227 is used to drive one of the gears 226 to rotate.

[0029] In this embodiment, after the mold is closed, the gear 226 is driven to rotate through the output end of the motor 228, and the gear 226 drives the slide 222 to move downward through the eccentric circle 225 and the slider 224, so that the slide 222 squeezes the upper mold 215 downward, so that the upper mold 215 and the lower mold 212 are further sealed after the mold is closed, ensuring that no leakage occurs during the casting process.

[0030] Specifically, the tooling assembly 21 also includes a balance rod 214 fixed at the four corners of the top of the base plate 1, and the top of the balance rod 214 is fixed to the bottom of the top plate 213, a cylinder 216 is installed on both sides of the top of the top plate 213, and a connecting piece 217 is slidably installed at the output end of the cylinder 216, and the bottom of the connecting piece 217 is fixed to the top of the upper mold 215.

[0031] In this embodiment, the connecting piece 217 is driven by the output end of the cylinder 216 to drive the upper mold 215 to rise and fall along the balance rod 214, thereby realizing the opening and closing of the upper mold 215 and the lower mold 212; and, through the sliding installation of the balance rod 214 and the output end of the cylinder 216, after closing the mold, when the upper mold 215 is squeezed downward by the sealing assembly 22, the upper mold 215 still has a small range of movement space.

[0032] Specifically, the outer edge of the outer end of the eccentric circle 225 is rotatably connected to the slider 224 , and the inner end axis of the eccentric circle 225 is fixedly connected to the gear 226 .

[0033] In this embodiment, when the gear 226 rotates, the eccentric circle 225 can drive the slider 224 to slide along the inside of the arc groove 223 .

[0034] Specifically, the two gears 226 on the same side are meshed and driven.

[0035] In this embodiment, when one of the gears 226 rotates, it can drive the other gear 226 to rotate synchronously in the opposite direction.

[0036] Specifically, the cylinder 216 is installed on the front and rear sides of the top of the top plate 213 , and the slide 221 is installed on the left and right sides of the bottom of the top plate 213 .

[0037] In this embodiment, the four ends of the upper mold 215 are evenly stressed and can all fit tightly with the lower mold 212 .

[0038] Specifically, the demoulding mechanism 3 includes a push rod 31 slidably installed at the front end of the base 211, a guide frame 32 fixed at the rear end of the push rod 31, and a convex rod 33 slidably installed on the guide frame 32, and the convex rod 33 penetrates the upper end of the base 211 and is slidably installed.

[0039] In this embodiment, after the lower mold 212 and the upper mold 215 are opened, the guide frame 32 is driven by pushing the push rod 31, and the guide frame 32 drives the protruding rod 33 to move upward through the sliding groove, thereby pushing the turbine workpiece upward from the lower mold 212.

[0040] The working principle and use process of the utility model are as follows: first, the output end of the cylinder 216 drives the connecting piece 217 to drive the upper mold 215 to rise and fall along the balance bar 214, so as to achieve the mold closing of the upper mold 215 and the lower mold 212; then, the output end of the motor 228 drives the gear 226 to rotate, and the gear 226 drives the slide seat 222 to move downward through the eccentric circle 225 and the slider 224, so that the slide seat 222 squeezes the upper mold 215 downward, so that the upper mold 215 and the lower mold 212 are further sealed after the mold closing;

[0041] Then, the molten metal liquid is injected through the pouring hole on the upper mold 215, and gradually solidifies into the shape of the turbine after cooling;

[0042] Finally, the upper mold 215 is lifted up to open the mold with the lower mold 212, and then the push rod 31 is pushed to drive the guide frame 32, and the guide frame 32 drives the protruding rod 33 to move upward through the slide groove, thereby pushing the turbine workpiece upward from the lower mold 212.

[0043] The model of the cylinder is DSNU-20-50-PPV-A, and the model of the motor is EDSMT-2T110-020A. Both are products using existing mature technologies and will not be elaborated on in detail. All electrical components appearing in this article are connected to the external main controller and 220V AC power.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] 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 casting mold for a gearbox turbine, comprising a base plate (1), characterized in that: The bottom plate (1) is provided with a casting mechanism (2) for closing the mold, and the casting mechanism (2) is provided with a demoulding mechanism (3) for demoulding the workpiece, and the casting mechanism (2) comprises: The tooling assembly (21) comprises a base (211) fixed on the top of the bottom plate (1), a lower mold (212) fixed on the top of the base (211), an upper mold (215) arranged above the lower mold (212), and a top plate (213) arranged above the upper mold (215); The sealing assembly (22) comprises a slide (221) fixed on both sides of the bottom of the top plate (213), a slide seat (222) slidably installed running through the interior of the slide (221), an arc groove (223) opened at the upper end of the interior of the slide seat (222), and a slider (224) slidably installed on both sides of the interior of the arc groove (223), an eccentric circle (225) rotatably installed at one end of the slider (224), and a gear (226) fixed at the other end of the eccentric circle (225), a mounting frame (227) fixed at one end of the slide (221), and a motor (228) installed on the mounting frame (227 and used to drive one of the gears (226) to rotate.

2. A casting mold for a gearbox turbine according to claim 1, characterized in that: The tooling assembly (21) further comprises a balancing rod (214) fixed at four corners of the top of the bottom plate (1), and the top of the balancing rod (214) is fixed to the bottom of the top plate (213), a cylinder (216) is installed on both sides of the top of the top plate (213), and a connecting piece (217) is slidably installed at the output end of the cylinder (216), and the bottom of the connecting piece (217) is fixed to the top of the upper mold (215).

3. The casting mold of a gearbox turbine according to claim 1, characterized in that: The outer edge of the outer end of the eccentric circle (225) is rotatably connected to the slider (224), and the inner end axis of the eccentric circle (225) is fixedly connected to the gear (226).

4. The casting mold of a gearbox turbine according to claim 1, characterized in that: The two gears (226) on the same side are meshed and driven.

5. The casting mold of a gearbox turbine according to claim 2, characterized in that: The cylinder (216) is installed on the front and rear sides of the top of the top plate (213), and the slide (221) is installed on the left and right sides of the bottom of the top plate (213).

6. The casting mold of a gearbox turbine according to claim 1, characterized in that: The demoulding mechanism (3) comprises a push rod (31) slidably mounted transversely at the front end of the base (211), a guide frame (32) fixed at the rear end of the push rod (31), and a convex rod (33) slidably mounted on the guide frame (32), and the convex rod (33) penetrates the upper end of the base (211) and is slidably mounted.

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