Casting mold for gearbox pump wheel

Abstract

The utility model discloses a gearbox pump wheel casting mold, which relates to the technical field of gearbox pump wheels, and comprises a casting mold, the bottom of the casting mold is provided with a demolding mechanism used for horizontal demolding of the mold, and the demolding mechanism comprises a linkage unit arranged at the bottom of the casting mold; the mold jacking unit is arranged in the linkage unit and used for jacking an upper mold plate of a casting mold, a user pulls a cam handle, the cam handle rotates in a pull rod, one side of the cam handle makes contact with the front face of the box body, and the sliding seat is pulled through the pull rod; when the sliding seat moves, the four movable lifting plates are driven by the two connecting rods to move synchronously, when the movable lifting plates move, the pulleys rotate and move on the top surfaces of the movable lifting plates, and the jacking columns move upwards through the gradually-heightened top surfaces of the movable lifting plates, so that an upper mold plate of a casting mold is horizontally jacked up; therefore, potential damage to the casting in the mold opening process is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of a gearbox pump wheel, in particular to a casting mould for a gearbox pump wheel. Background Art

[0002] In oil extraction, some heavy machinery and equipment use gearboxes for efficient operation. The gearbox has a gearbox pump wheel inside, which is usually composed of one or more blades fixed on the central shaft and rotates with the rotation of the shaft. The main function of the pump wheel is to suck the liquid (usually hydraulic oil) in the gearbox and throw it out through the rotation of the blades, generating a certain amount of hydraulic pressure and flow.

[0003] After checking the public (announcement) number: CN213104365U, a casting mold for a gearbox is disclosed, including a top mold, a bottom mold is arranged at the bottom of the top mold, the top mold and the bottom mold are fixedly connected by a mounting hole, a pouring hole for pouring molten metal into the mold cavity is arranged on one side of the top mold, and rotation grooves are opened on both sides of the bottom mold, and foot rollers are installed in the rotation grooves to make the casting mold fall to the ground and roll in an inclined state; the contour structure of the vibration cavity is consistent with the contour structure of the molding cavity of the bottom mold, and the first vibration seat and the second vibration seat are installed in the vibration cavity to form a bottom vibration effect when the bottom mold is injected and molded, and the extrusion vibration method is adopted to make the two vibration seats vibrate the molding cavity into which the molten metal is injected from the bottom, so that the molten metal poured in the bottom molding cavity is vibrated and mixed, and the solution reaches any position of the mold cavity, thereby preventing sand holes or material shortages from occurring in the gearbox housing after molding in the mold cavity, thereby improving product quality.

[0004] Based on the above-mentioned prior art, the existing casting mold of the gearbox pump wheel still has the following problems: when the casting mold of the gearbox pump wheel is demolded after use, the upper and lower molds are usually separated by external tools, but during the separation process, the molds are not separated horizontally, which can easily cause damage to the finished product. For this reason, the utility model provides a casting mold for a gearbox pump wheel. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a casting mold for a gearbox pump wheel, which solves the following problems existing in the existing casting molds for gearbox pump wheels: when the casting mold for the gearbox pump wheel is demolded after use, the upper and lower molds are usually separated by external tools, but during the separation process, the molds are not separated horizontally, which can easily cause damage to the finished product.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a casting mold for a gearbox pump wheel, comprising a casting mold, a demoulding mechanism is provided at the bottom of the casting mold for horizontal demoulding of the mold, and the demoulding mechanism includes:

[0007] The linkage unit is arranged at the bottom of the casting mold, and comprises a box body fixedly installed at the bottom of the lower template of the casting mold, a slide plate is fixedly installed inside the box body, a sliding seat is slidably installed inside the slide plate, a connecting rod is fixedly installed through the inside of the sliding seat, a movable lifting plate is fixedly installed at both ends of the connecting rod, a pull rod is fixedly installed at the front end of the sliding seat, and a cam handle is rotatably installed at the front end of the pull rod;

[0008] The top mold unit is arranged inside the linkage unit and is used to lift up the upper mold plate of the casting mold.

[0009] Preferably, two slide rails are fixedly installed inside the box, and the movable lifting plate is adapted to slide inside the slide rails.

[0010] Preferably, a short pull column is fixedly installed on the top of the sliding seat, a long pull column is fixedly installed on the top of the sliding groove plate, and a tension spring is fixedly installed between the short pull column and the long pull column.

[0011] Preferably, the top mold unit includes a mounting seat fixedly installed inside the top plate of the box body, a limiting rod is fixedly installed inside the mounting seat, a top column is slidably installed inside the mounting seat, a limiting groove is provided inside the top column, and the limiting rod slides inside the limiting groove, a retaining ring disk is fixedly installed on the outer ring of the top column, a reset spring is provided on the outer ring sleeve of the top column, and a pulley is rotatably installed on the bottom end of the top column.

[0012] Preferably, the top of the top column slides through the lower template of the casting mold and contacts the bottom of the upper template of the casting mold.

[0013] Preferably, the pulley is slidably mounted on the top of the movable lifting plate.

[0014] The utility model provides a casting mold for a gearbox pump wheel. Compared with the prior art, it has the following beneficial effects:

[0015] (1) For the casting mold of the gearbox pump wheel, the user pulls the cam handle, which rotates inside the pull rod. One side of the cam handle contacts the front of the box body, and the sliding seat is pulled by the pull rod. While the sliding seat moves, the four movable lifting plates are driven to move synchronously through two connecting rods. When the movable lifting plates move, the pulley rotates and moves on the top surface of the movable lifting plates. The top surface of the movable lifting plates gradually becomes higher, so that the top plate of the casting mold is lifted horizontally, thereby preventing potential damage to the casting during the mold opening process.

[0016] (2) The casting mold of the gearbox pump wheel is a pulley installed by rotating at the bottom end of the top column, and the pulley is slidably mounted on the top of the movable lifting plate, thereby ensuring that the top column has a high degree of stability and accuracy when moving up and down, and the pulley rotates and slides on the top of the movable lifting plate, and the friction between them is weakened, thereby reducing vibration and error caused by friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a right-side stereoscopic structural diagram of the utility model;

[0018] Figure 2 It is a left-side sectional stereoscopic structural diagram of the utility model;

[0019] Figure 3 It is a three-dimensional structural diagram of the linkage unit of the utility model;

[0020] Figure 4 It is a three-dimensional structural diagram of the top mold unit of the utility model.

[0021] In the figure: 1-casting mold, 2-demolding mechanism, 21-linkage unit, 211-box, 212-slide plate, 213-sliding seat, 214-pull rod, 215-cam handle, 216-short pull column, 217-tension spring, 218-long pull column, 219-connecting rod, 2110-movable lifting plate, 2111-slide rail, 22-top mold unit, 221-mounting seat, 222-limit rod, 223-top column, 224-limiting groove, 225-reset spring, 226-retaining ring disk, 227-pulley. 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] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] A casting mold for a gearbox pump wheel includes a casting mold 1. A demoulding mechanism 2 is provided at the bottom of the casting mold 1 for horizontal demoulding of the mold. The demoulding mechanism 2 includes:

[0025] The linkage unit 21 is arranged at the bottom of the casting mold 1, and includes a box body 211 fixedly installed at the bottom of the lower template of the casting mold 1, a slide plate 212 is fixedly installed inside the box body 211, a sliding seat 213 is slidably installed inside the slide plate 212, a connecting rod 219 is fixedly installed through the inside of the sliding seat 213, and a movable lifting plate 2110 is fixedly installed at both ends of the connecting rod 219, a pull rod 214 is fixedly installed at the front end of the sliding seat 213, and a cam handle 215 is rotatably installed at the front end of the pull rod 214;

[0026] The top mold unit 22 is arranged inside the linkage unit 21 and is used to lift up the upper mold plate of the casting mold 1 .

[0027] The sliding seat 213 moves, the short pull column 216 pulls the tension spring 217, and the tension spring 217 pulls the short pull column 216 through its own elastic force to reset the sliding seat 213. The front end of the pull rod 214 slides through the box body 211 and rotates to install the cam handle 215.

[0028] In this embodiment, two slide rails 2111 are fixedly installed inside the box body 211 , and the movable lifting plate 2110 is adapted to slide inside the slide rails 2111 .

[0029] In this embodiment, a short pull column 216 is fixedly installed on the top of the sliding seat 213 , a long pull column 218 is fixedly installed on the top of the slide plate 212 , and a tension spring 217 is fixedly installed between the short pull column 216 and the long pull column 218 .

[0030] The user pulls the cam handle 215, and the cam handle 215 rotates inside the pull rod 214. One side of the cam handle 215 contacts the front of the box 211, and the sliding seat 213 is pulled by the pull rod 214. While the sliding seat 213 moves, the upper movable lifting plate 2110 is driven to move synchronously through the two connecting rods 219. When the movable lifting plate 2110 moves, the pulley 227 rotates and moves on the top surface of the movable lifting plate 2110, and the top column 223 moves upward through the gradually higher top surface of the movable lifting plate 2110, thereby realizing the horizontal lifting of the upper template of the casting mold 1, thereby preventing potential damage to the casting during the mold opening process.

[0031] In this embodiment, the top mold unit 22 includes a mounting base 221 fixedly installed inside the top plate of the box body 211, a limiting rod 222 is fixedly installed inside the mounting base 221, a top column 223 is slidably installed inside the mounting base 221, a limiting groove 224 is provided inside the top column 223, and the limiting rod 222 slides inside the limiting groove 224, a retaining ring disk 226 is fixedly installed on the outer ring of the top column 223, a reset spring 225 is provided on the outer ring sleeve of the top column 223, and a pulley 227 is rotatably installed on the bottom end of the top column 223.

[0032] When the top column 223 moves, the limiting rod 222 slides inside the limiting groove 224, and the retaining ring plate 226 squeezes the return spring 225, and the return spring 225 pushes the retaining ring plate 226 downward by its own elastic force, so that the top column 223 is reset.

[0033] In this embodiment, the top of the top column 223 slides through the lower template of the casting mold 1 and contacts the bottom of the upper template of the casting mold 1.

[0034] In this embodiment, the pulley 227 is slidably mounted on the top of the movable lifting plate 2110.

[0035] The pulley 227 is rotatably installed at the bottom end of the top column 223, and the pulley 227 is slidably clamped on the top of the movable lifting plate 2110, thereby ensuring that the top column 223 has a high degree of stability and accuracy when moving up and down, and the pulley 227 rotates and slides on the top of the movable lifting plate 2110, and the friction between them is weakened, thereby reducing vibration and errors caused by friction.

[0036] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] During operation, after the casting is formed, the user pulls the cam handle 215, and the cam handle 215 rotates inside the pull rod 214. One side of the cam handle 215 contacts the front of the box body 211, and the sliding seat 213 is pulled by the pull rod 214. When the sliding seat 213 moves, the four movable lifting plates 2110 are driven to move synchronously through the two connecting rods 219. At the same time, the sliding seat 213 moves, and the short pulling column 216 pulls the tension spring 217. When the movable lifting plate 2110 moves, the pulley 227 rotates and moves on the top surface of the movable lifting plate 2110, and the movable lifting plate 2110 gradually moves. The raised top surface causes the top column 223 to move upward. While the top column 223 moves, the limiting rod 222 slides inside the limiting groove 224, and the retaining ring plate 226 squeezes the reset spring 225 to horizontally lift the upper template of the casting mold 1. After the upper template is taken, the user pushes the cam handle 215. At this time, the tension spring 217 pulls the short pulling column 216 through its own elastic force to reset the sliding seat 213. At the same time, the reset spring 225 pushes the retaining ring plate 226 downward through its own elastic force to reset the top column 223. When the top column 223 is reset, the top surface of the top column 223 is parallel to the top surface of the lower template of the casting mold 1.

[0038] 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", "comprise" or any other variants 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.

[0039] 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 pump wheel, comprising a casting mold (1), characterized in that: The bottom of the casting mold (1) is provided with a demoulding mechanism (2) for horizontal demoulding of the mold, and the demoulding mechanism (2) comprises: The linkage unit (21) is arranged at the bottom of the casting mold (1), and comprises a box body (211) fixedly installed at the bottom of the lower template of the casting mold (1), a slide plate (212) is fixedly installed inside the box body (211), a sliding seat (213) is slidably installed inside the slide plate (212), a connecting rod (219) is fixedly installed through the inside of the sliding seat (213), both ends of the connecting rod (219) are fixedly installed with a movable lifting plate (2110), a pull rod (214) is fixedly installed at the front end of the sliding seat (213), and a cam handle (215) is rotatably installed at the front end of the pull rod (214); The top mold unit (22) is arranged inside the linkage unit (21) and is used to lift up the upper mold plate of the casting mold (1).

2. The casting mold for a gearbox pump wheel according to claim 1, characterized in that: Two slide rails (2111) are fixedly installed inside the box body (211), and the movable lifting plate (2110) is adapted to slide inside the slide rails (2111).

3. The casting mold for a gearbox pump wheel according to claim 1, characterized in that: A short pull column (216) is fixedly installed on the top of the sliding seat (213), a long pull column (218) is fixedly installed on the top of the sliding groove plate (212), and a tension spring (217) is fixedly installed between the short pull column (216) and the long pull column (218).

4. The casting mold for a gearbox pump wheel according to claim 2, characterized in that: The top mold unit (22) comprises a mounting seat (221) fixedly mounted inside the top plate of the box body (211); a limiting rod (222) is fixedly mounted inside the mounting seat (221); a top column (223) is slidably mounted inside the mounting seat (221); a limiting groove (224) is provided inside the top column (223), and the limiting rod (222) is adapted to slide inside the limiting groove (224); a retaining ring disk (226) is fixedly mounted on the outer ring of the top column (223); a return spring (225) is sleeved on the outer ring of the top column (223); and a pulley (227) is rotatably mounted on the bottom end of the top column (223).

5. The casting mold for a gearbox pump wheel according to claim 4, characterized in that: The top of the top column (223) slides through the lower template of the casting mold (1) and contacts the bottom of the upper template of the casting mold (1).

6. The casting mold for a gearbox pump wheel according to claim 4, characterized in that: The pulley (227) is slidably mounted on the top of the movable lifting plate (2110).

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