Sanding and shell-making device for sand mold

Abstract

The utility model relates to a sand spraying and shell making device for a sand mold, which comprises a fixing frame with trundles, a sand tank is fixed at the upper end of the fixing frame, an air blowing mechanism is arranged at the bottom of the sand tank, a sliding seat capable of moving transversely and longitudinally is arranged on the upper side of the sand tank, and a sand falling hopper is mounted on the sliding seat. And a holding handle for driving the shakeout hopper to move is arranged on the front side of the shakeout hopper. The device is convenient for spraying sand on the wax mould after being dipped in slurry, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] The utility model relates to a sand mold sand - spreading shell - making device. Background Art

[0002] During the production process of sand molds, after applying a slurry on the surface of a wax mold, the wax mold needs to be placed in a sand tank, and sand is scattered on the surface of the wax mold to form a sand shell so that the sand mold can be formed. For the existing sand - spreading on wax molds, usually after the wax mold is immersed in the slurry and placed in the sand tank, workers scoop up the sand and scatter it on the wax mold. And the workers need to scoop sand multiple times to ensure that the sand covers the surface of the wax mold. Moreover, for the production of one sand mold, multiple layers of sand need to be adhered to ensure the forming quality of the subsequent sand mold. This makes the workload of manual sand - scooping and sand - spreading large, the labor intensity of workers is relatively high, and it is not conducive to improving the shell - making efficiency. Therefore, a sand mold sand - spreading shell - making device is needed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a sand mold sand - spreading shell - making device, which is convenient for spreading sand on the wax mold after dipping in the slurry and reduces the labor intensity of operators.

[0004] The technical solution of the utility model lies in: a sand mold sand - spreading shell - making device, including a fixed frame with casters, the upper end of the fixed frame is fixed with a sand tank, a gas - blowing mechanism is arranged at the bottom of the sand tank, a sliding seat that can move horizontally and vertically is arranged above the sand tank, a sand - dropping hopper is installed on the sliding seat, and a holding handle for driving the sand - dropping hopper to move is arranged on the front side of the sand - dropping hopper.

[0005] Further, the gas - blowing mechanism includes air inlet pipes evenly distributed at the bottom of the sand tank, the lower ends of the air inlet pipes are connected to a gas supply device through pipelines, and a number of obliquely downward air outlet pipes are arranged at intervals along the circumferential direction of the pipe part of the air inlet pipes extending into the sand tank.

[0006] Further, at least two layers of air outlet pipes are arranged on the air inlet pipes, and the included angle between the air outlet pipes and the air inlet pipes is 50 - 60°.

[0007] Further, support frames are respectively fixed on both sides of the sand tank, a sliding frame is arranged between the two support frames, the two side ends of the sliding frame are respectively longitudinally slidably connected to the support frames, and the sliding seat is horizontally slidably connected to the sliding frame.

[0008] Further, longitudinal linear guide rails connected to the sliding frame are installed at the upper ends of the support frames, and transverse linear guide rails connected to the sliding seat are installed on the sliding frame.

[0009] Further, a valve is arranged at the discharge port of the sand - dropping hopper.

[0010] Furthermore, a dipping slurry tank is arranged on one side of the fixing frame. A slurry bucket driven by a motor to rotate is arranged in the dipping slurry tank. A scraper is installed at the upper end of the dipping slurry tank and extends into the slurry bucket and is close to the side wall of the slurry bucket.

[0011] Furthermore, a roller assembly for supporting the bottom surface of the slurry bucket is arranged on the peripheral side of the bottom of the dipping slurry tank; a water replenishing pipe is also arranged on the upper side of the dipping slurry tank.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The device is convenient for sand sprinkling on the wax mold after dipping slurry, so as to form a layer of sand shell on the surface of the wax mold for subsequent formation of a sand mold.

[0014] 2. By arranging a sand hopper that can move horizontally and longitudinally above the sand tank, it is convenient for the operator to move the sand dropping hopper to sprinkle sand, replacing the process of scooping and sprinkling sand by personnel, thereby reducing the labor intensity of the operator and helping to improve the production efficiency of the sand mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the utility model;

[0016] Figure 2 is a top view schematic diagram of the utility model;

[0017] Figure 3 Schematic diagram of the dipping slurry tank structure of the utility model;

[0018] In the figure: 10 - fixing frame, 11 - caster wheels, 20 - sand tank, 30 - sand dropping hopper, 31 - holding handle, 32 - valve, 41 - intake pipe, 42 - pipeline, 43 - outlet pipe, 51 - support frame, 52 - sliding frame, 53 - longitudinal linear guide rail, 54 - transverse linear guide rail, 60 - dipping slurry tank, 61 - motor, 62 - slurry bucket, 63 - scraper, 64 - roller assembly, 65 - water replenishing pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the above features and advantages of the utility model more understandable, specific embodiments are given below and described in detail in conjunction with the accompanying drawings, but the utility model is not limited thereto.

[0020] Reference Figures 1 to 3

[0021] A sand mold sand sprinkling and shell making device includes a fixing frame 10 with caster wheels 11. The upper end of the fixing frame is fixed with a sand tank 20. An air blowing mechanism is arranged at the bottom of the sand tank. A sliding seat that can move horizontally and longitudinally is arranged above the sand tank. A sand dropping hopper 30 with a downward discharge port is installed on the sliding seat. A holding handle 31 for driving the movement of the sand dropping hopper is arranged at the front side of the sand dropping hopper.

[0022] In this embodiment, in order to make the sand material in the sand tank float, the air-blowing mechanism includes air inlet pipes 41 evenly distributed at the bottom of the sand tank. The lower ends of the air inlet pipes are connected to a gas supply device through pipelines 42. Four obliquely downward air outlet pipes 43 are arranged at intervals along the circumferential direction of the pipe part of the air inlet pipe extending into the sand tank. The downward inclination of the air outlet pipes can prevent the sand material from entering the air inlet pipes.

[0023] In this embodiment, in order to better drive the sand material to float, at least two layers of air outlet pipes are arranged on the air inlet pipe. The included angle between the air outlet pipes and the air inlet pipe is 50°-60°, preferably 55°.

[0024] In this embodiment, in order to better realize the movement of the sand dropping hopper, support frames 51 are respectively fixed on both sides of the sand tank. A sliding frame 52 is arranged between the two support frames. The two side ends of the sliding frame are longitudinally slidably connected to the support frames respectively. The sliding seat is transversely slidably connected to the sliding frame, so as to realize the transverse and longitudinal movement of the sand dropping hopper.

[0025] In this embodiment, longitudinal linear guide rails 53 connected to the sliding frame are installed at the upper ends of the support frames respectively. Transverse linear guide rails 54 connected to the sliding seat are installed on the sliding frame. This enables the sliding seat to slide better.

[0026] In this embodiment, a valve 32 is arranged at the discharge port of the sand dropping hopper, so as to better control the on-off of the sand material.

[0027] In this embodiment, in order to facilitate the dipping of the wax mold in slurry, a dipping tank 60 is arranged on one side of the fixing frame. A slurry holding bucket 62 driven by a motor 61 to rotate is arranged in the dipping tank. A scraper 63 extending into the slurry holding bucket and close to the side wall of the slurry holding bucket is installed at the upper end of the dipping tank.

[0028] In this embodiment, an electric hoist (not shown in the figure) for lifting the wax mold is arranged above the dipping tank and the sand tank. A hook for hoisting the wax mold is arranged on the electric hoist. Thus, the dipped wax mold is moved to the sand tank by the electric hoist for subsequent sand spreading.

[0029] In this embodiment, a roller assembly 64 supporting the bottom surface of the slurry holding bucket is arranged on the circumferential side of the bottom of the dipping tank, so that the slurry holding bucket can rotate more stably; a water supply pipe 65 is also arranged on the upper side of the dipping tank to supply water to the slurry holding bucket.

[0030] During use, fine sand (such as quartz sand) is placed in the sand tank, and gas is blown into the air outlet pipe to make the sand float. After the wax mold is immersed in the slurry, it is taken out and moved to the sand tank by an electric hoist. The operator can drive the sand hopper to move with one hand to let the sand material sprinkle on the wax mold. At the same time, the wax mold can be rotated, and the sand in the sand hopper is combined with the sand in the sand tank to wrap the wax mold with the sand material. The sand-wrapped wax mold is sent to the subsequent process. When the sand material in the sand hopper is insufficient, the sand material can be manually loaded into the sand hopper or pumped into the sand hopper by a feeding device.

[0031] If the present utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (such as using bolts or screws), or it can also be understood as: a non-detachable fixed connection (such as riveting, welding). Of course, the mutually fixed connection can also be replaced by an integral structure (such as manufactured by an integral casting process) (except for those that obviously cannot adopt the integral forming process).

[0032] In addition, the terms used to represent the positional relationship or shape in any of the technical solutions disclosed in the present utility model shall, unless otherwise stated, include states or shapes that are approximate, similar, or close to it.

[0033] Any component provided by the present utility model can either be assembled from a plurality of separate components or be a single component manufactured by an integral forming process.

[0034] The above are only the preferred embodiments of the present utility model. All equivalent changes and modifications made according to the scope of the patent application of the present utility model shall fall within the scope covered by the present utility model.

Claims

1. A sand mold sand-spreading shell-making device, comprising a fixed frame with casters, characterized in that: A sand trough is fixed at the upper end of the fixed frame, an air blowing mechanism is arranged at the bottom of the sand trough, a sliding seat movable horizontally and vertically is arranged on the upper side of the sand trough, a sand dropping bucket is installed on the sliding seat, and a holding handle for driving the sand dropping bucket to move is arranged on the front side of the sand dropping bucket.

2. The sand mold sand spreading shell making device according to claim 1, characterized in that: The air blowing mechanism comprises an air inlet pipe evenly distributed at the bottom of the sand tank, the lower end of the air inlet pipe is connected to the air supply device through a pipeline, and a plurality of downwardly inclined air outlet pipes are arranged at intervals along the circumferential direction on the pipe portion of the air inlet pipe extending into the sand tank.

3. The sand mold sand spreading shell making device according to claim 2, characterized in that: At least two layers of air outlet pipes are arranged on the air inlet pipe, and the angle between the air outlet pipe and the air inlet pipe is 50-60 degrees.

4. The sand mold sand spreading shell making device according to claim 1, 2 or 3, characterized in that: Support frames are fixed on both sides of the sand trough, a sliding frame is arranged between the two support frames, both side ends of the sliding frame are respectively connected to the support frames in longitudinal sliding connection, and the sliding seat is connected to the sliding frame in transverse sliding connection.

5. The sand mold sand spreading shell making device according to claim 4, characterized in that: The upper end of the support frame is provided with a longitudinal linear guide rail connected to the sliding frame, and the sliding frame is provided with a transverse linear guide rail connected to the sliding seat.

6. The sand mold sand spreading shell making device according to claim 1, characterized in that: The discharge port of the falling sand hopper is provided with a valve.

7. The sand mold sand spreading shell making device according to claim 1, 2, 3 or 5, characterized in that: A slurry immersion tank is arranged on one side of the fixed frame, in which a slurry barrel driven to rotate by a motor is arranged, and a scraper extending into the slurry barrel and close to the side wall of the slurry barrel is installed at the upper end of the slurry immersion tank.

8. The shell making device of claim 7, characterized in that: A roller assembly supporting the bottom surface of the pulp barrel is arranged on the peripheral side of the bottom of the pulp soaking tank; a water supply pipe is also arranged on the upper side of the pulp soaking tank.

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