Molding sand feeding device

Abstract

The utility model relates to the technical field of casting, in particular to a molding sand feeding device which comprises a material frame, a material receiving groove, a first feeding pipe and a second feeding pipe, a hopper with an opening in the top is arranged above the material frame, the first feeding pipe is obliquely arranged, one end of the first feeding pipe is communicated with a first discharging opening in the bottom of the hopper, and the other end of the first feeding pipe is communicated with a second discharging opening in the bottom of the hopper. The other end of the second feeding pipe is communicated with the interior of the material receiving groove, a second discharging port is formed in the bottom of the material receiving groove, and a feeding port of the second feeding pipe is communicated with the second discharging port. By means of the hopper, the material receiving groove, the first feeding pipe and the second feeding pipe, bagged molding sand above the material frame is automatically conveyed into the material receiving groove, manpower is saved, the labor intensity of workers is reduced, and then the molding sand in the material receiving groove is conveyed into equipment for preparing sand molds through the vacuum feeding machine. The molding sand conveying device is simple in structure and convenient to use, molding sand can be automatically conveyed, the labor intensity of workers is reduced, the production efficiency is improved, and the plant environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a molding sand feeding device. Background Art

[0002] Sand casting is a common casting process, widely used in machinery, automobiles, aerospace and other fields. Sand casting refers to pouring molten metal into a pre-prepared sand mold, and after the metal cools and solidifies, the sand mold is taken out to obtain the desired casting. The preparation of the sand mold is the most critical step in sand casting, which is to transport the molding sand to the equipment for forming the sand mold, apply a certain pressure, and make the sand fit tightly to form a sand mold.

[0003] In the prior art, the molding sand is usually shoveled manually into a conveyor belt, which is then transported to a sand mold forming device. This is not only labor-intensive, time-consuming and labor-intensive, but also has low work efficiency. In addition, the molding sand particles are very fine and scatter into the factory, affecting the factory environment. Utility Model Content

[0004] The purpose of the utility model is to provide a molding sand feeding device in view of the deficiencies of the prior art, which has a simple structure and is easy to use, can realize automatic transportation of molding sand, reduces the labor intensity of workers, improves production efficiency, and improves the factory environment.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a molding sand feeding device, including a material rack, a material receiving trough, a first feeding pipe and a second feeding pipe, a hopper with an open top is arranged above the material rack, the first feeding pipe is arranged obliquely, one end of the first feeding pipe is connected with the first discharge port at the bottom of the hopper, and the other end is connected with the inside of the material receiving trough, a second discharge port is arranged at the bottom of the material receiving trough, a feeding port of the second feeding pipe is connected with the second discharge port, and an output end of the second feeding pipe is connected with a vacuum loader.

[0006] Furthermore, the bottom of the material receiving trough is conical, and the second material outlet is located at the lowest position of the bottom of the material receiving trough.

[0007] Furthermore, a grille is provided above the material rack, the grille is located above the material hopper, and a bag breaking device is provided above the grille.

[0008] Furthermore, the first discharge port is connected to a plurality of the first feeding pipes.

[0009] Furthermore, a plug is provided above the material receiving trough, and the plug is connected to a driving device for driving the plug to move.

[0010] Furthermore, the plug is a conical frustum that is larger at the top and smaller at the bottom.

[0011] Furthermore, the top of the material receiving trough is open.

[0012] The beneficial effects of the utility model are as follows: a molding sand feeding device comprises a material rack, a material receiving trough, a first feeding pipe and a second feeding pipe, a hopper with an open top is arranged above the material rack, the first feeding pipe is arranged at an angle, one end of the first feeding pipe is connected to the first discharge port at the bottom of the hopper, and the other end is connected to the inside of the material receiving trough, a second discharge port is arranged at the bottom of the material receiving trough, the feed port of the second feeding pipe is connected to the second discharge port, and the output end of the second feeding pipe is connected to a vacuum feeder. Through the hopper, the material receiving trough, the first feeding pipe and the second feeding pipe, the bagged molding sand above the material rack is automatically transported to the material receiving trough, which is conducive to saving manpower and reducing the labor intensity of workers. The molding sand in the material receiving trough is then transported by the vacuum feeder to the equipment for preparing sand molds. The utility model has a simple structure and is easy to use. It can realize the automatic transportation of molding sand, reduce the labor intensity of workers, improve production efficiency, and improve the factory environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a top view of the material rack of the utility model.

[0015] Description of reference numerals:

[0016] 1——material rack, 2——material receiving trough, 21——second material outlet, 3——first material feeding pipe, 4——second material feeding pipe, 5——material hopper, 51——first material outlet, 6——grid, 7——bag breaking device, 8——block, 9——driving device. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0018] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1 , Figure 2 As shown, a molding sand feeding device of the present embodiment includes a material rack 1, a material receiving trough 2, a first feeding pipe 3 and a second feeding pipe 4. The top of the material receiving trough 2 is open, and a hopper 5 with an open top is arranged above the material rack 1. The first feeding pipe 3 is arranged obliquely, and one end of the first feeding pipe 3 is connected with a first discharge port 51 at the bottom of the hopper 5, and the other end is connected with the inside of the material receiving trough 2. A second discharge port 21 is arranged at the bottom of the material receiving trough 2, and a feeding port of the second feeding pipe 4 is connected with the second discharge port 21. The discharge end of the second feeding pipe 4 is connected with a vacuum feeder. The vacuum feeder can adopt an existing vacuum feeder, and utilize the negative pressure of the vacuum feeder to transport the molding sand in the material receiving trough 2 to the equipment for preparing the sand mold. During operation, the bottom of the bagged molding sand is punctured and placed above the hopper 5. The molding sand flows from the bottom of the bag into the hopper 5, and then flows into the receiving trough 2 along the inclined first feeding pipe 3. The vacuum feeder connected to the second feeding pipe 4 generates negative pressure to transport the molding sand in the receiving trough 2 to the equipment for preparing sand molds. The utility model device automatically transports the bagged molding sand above the material rack 1 to the receiving trough 2 through the hopper 5, the receiving trough 2, the first feeding pipe 3 and the second feeding pipe 4, which is conducive to saving labor and reducing the labor intensity of workers. The molding sand in the receiving trough 2 is then transported to the equipment for preparing sand molds by the vacuum feeder. When the vacuum feeder stops working, the molding sand accumulated in the receiving trough and the first feeding pipe 3 can prevent the molding sand from continuing to flow, which is conducive to ensuring the factory environment.

[0021] The bottom of the receiving trough 2 is conical, and the second discharge port 21 is located at the lowest position of the bottom of the receiving trough 2 , so as to facilitate the molding sand inside the receiving trough 2 to flow toward the second discharge port 21 .

[0022] A grille 6 is provided above the material rack 1, and the grille 6 is located above the hopper 5. A bag breaking device 7 is provided above the grille 6, and the bag breaking device 7 can be a piercing cone. When the bagged molding sand is placed above the material rack 1, the piercing cone can pierce the packaging bag, so that the molding sand in the bag flows into the hopper 5. The grille 6 can support the molding sand bag to prevent the packaging bag from blocking the first discharge port 51 and affecting the flow of the molding sand.

[0023] The first discharge port 51 is connected to a plurality of the first feeding pipes 3. Preferably, the first discharge port 51 is connected to two first feeding pipes 3, and the end of each first feeding pipe 3 is connected to a receiving trough 2, so that one material rack 1 can provide molding sand to two receiving troughs 2, thereby supplying molding sand to two adjacent sand mold preparation devices.

[0024] A plug 8 is arranged above the receiving trough 2, and the plug 8 is connected to a driving device 9 for driving the plug 8 to move. Preferably, the driving device 9 is a cylinder, and preferably, the plug 8 is a conical truncated cone with a larger upper portion and a smaller lower portion. The driving device 9 drives the plug 8 to move toward the second discharge port 21, so that the plug 8 blocks the second discharge port 21, and the size of the second discharge port 21 is adjusted.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A molding sand feeding device, characterized in that: The invention comprises a material rack (1), a material receiving trough (2), a first material feeding pipe (3) and a second material feeding pipe (4); a material hopper (5) with an open top is arranged above the material rack (1); the first material feeding pipe (3) is arranged obliquely; one end of the first material feeding pipe (3) is connected to a first material discharge port (51) at the bottom of the material hopper (5); and the other end is connected to the inside of the material receiving trough (2); a second material discharge port (21) is arranged at the bottom of the material receiving trough (2); a material feed port of the second material feeding pipe (4) is connected to the second material discharge port (21); and an output end of the second material feeding pipe (4) is connected to a vacuum feeder.

2. A molding sand feeding device according to claim 1, characterized in that: The bottom of the material receiving trough (2) is conical, and the second material outlet (21) is located at the lowest position of the bottom of the material receiving trough (2).

3. A molding sand feeding device according to claim 1, characterized in that: A grille (6) is arranged above the material rack (1), the grille (6) is located above the material hopper (5), and a bag breaking device (7) is arranged above the grille (6).

4. A molding sand feeding device according to claim 1, characterized in that: The first discharge port (51) is connected to a plurality of the first feeding pipes (3).

5. The molding sand feeding device according to claim 1, characterized in that: A plug block (8) is arranged above the material receiving trough (2), and the plug block (8) is connected to a driving device (9) for driving the plug block (8) to move.

6. A molding sand feeding device according to claim 5, characterized in that: The plug (8) is a conical frustum with a larger top and a smaller bottom.

7. The molding sand feeding device according to claim 1, characterized in that: The top of the material receiving trough (2) is open.

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