Shell-making raw material mixing and spraying equipment for investment casting

Abstract

The utility model discloses shell-making raw material mixing and spraying equipment for investment casting, and particularly relates to the technical field of mixing and spraying equipment, the shell-making raw material mixing and spraying equipment comprises a mixing and spraying tank, and a processing assembly for mixing and spraying shell-making raw materials for investment casting is arranged in the mixing and spraying tank; the machining assembly comprises a supporting shaft movably installed in the mixing and spraying tank through a bearing, and a plurality of sets of fixing pieces used for fixing products are arranged outside the supporting shaft. The movable frame and the fixed frame which are hinged are fixed through the fastener, so that products can be fixed, the supporting shaft is driven by the forward and backward motor to rotate, the supporting shaft drives the products on the movable frame and the fixed frame to make forward and backward reciprocating contact with sand located at the bottom of the mixing and spraying tank, and therefore the sand can be wrapped outside the products. And the whole structure is packaged in the mixing and spraying tank, so that pollution caused by splashing of sand can be effectively avoided, and flexibility reduction caused by overall operation of equipment can also be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing and spraying equipment, and more specifically to a mixing and spraying equipment for shell-making raw materials in investment casting. Background Art

[0002] Investment casting, also known as lost-wax casting, is a precision casting method, and its process includes multiple steps such as wax pressing, wax trimming, tree assembling, slurry dipping, wax melting, pouring molten metal, and post-treatment. In this process, the sand spraying operation plays a key role in ensuring the surface quality and dimensional accuracy of the casting.

[0003] As shown in the prior art with the publication number CN211539404U, although the mixing and spraying barrel body in this prior art rotates stably and has good sand spraying uniformity, when sand materials are fed, they are struck to prevent caked sand materials, which helps to improve the sand spraying quality and indirectly improves the shell-making quality of investment casting. However, this prior art requires the whole mixing and spraying barrel to rotate, resulting in a high use cost and also affecting the flexibility of this technical solution.

[0004] Moreover, during the operation of this technical solution, the sand materials in the mixing and spraying barrel will spatter to the outside, causing environmental pollution. Content of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a mixing and spraying equipment for shell-making raw materials in investment casting. By encapsulating the whole structure inside the mixing and spraying tank, it can effectively avoid pollution caused by sand material spattering and also avoid the reduction of flexibility due to the overall rotation of the equipment, so as to solve the problems presented in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a mixing and spraying equipment for shell-making raw materials in investment casting, including a mixing and spraying tank, and a processing component for mixing and spraying shell-making raw materials in investment casting is arranged inside the mixing and spraying tank;

[0007] The processing component includes a support shaft movably installed inside the mixing and spraying tank through a bearing, and multiple fixing parts for fixing products are arranged outside the support shaft;

[0008] Each fixing part includes a fixed frame and a movable frame hinged to each other. The fixed frame is installed outside the support shaft, openings are formed inside both the fixed frame and the movable frame, and filters are installed inside one ends of the two openings away from each other;

[0009] A fastener is arranged outside one end of the movable frame away from the support shaft. The fastener penetrates through the movable frame and extends into the fixed frame, and the fastener is in threaded connection with the fixed frame;

[0010] A forward and reverse motor is installed at the rear side of the mixing and spraying tank, and an output shaft of the forward and reverse motor penetrates through the mixing and spraying tank and is fixed to the support shaft.

[0011] In a preferred embodiment, a feed pipe is fixedly connected to the top of the mixing and spraying tank, and a discharge pipe is fixedly connected to the bottom end of the mixing and spraying tank.

[0012] In a preferred embodiment, operation openings are provided on both sides of the top end of the mixing and spraying tank, and encapsulation members are arranged inside the operation openings.

[0013] In a preferred embodiment, two positioning members are installed on the front side of the mixing and spraying tank. A threaded rod is movably connected through bearings between the two positioning members. Two moving seats are threadedly connected to the outside of the threaded rod. A connecting bracket is installed at the front end of the moving seat, and the rear side of the end of the connecting bracket away from the moving seat is fixedly connected to the front side of the encapsulation member.

[0014] In a preferred embodiment, a servo motor is installed on one side of one of the positioning members away from the threaded rod. The output shaft of the servo motor penetrates through the positioning member and is fixedly connected to the threaded rod.

[0015] In a preferred embodiment, mounting members are installed on both sides of the bottom end of the mixing and spraying tank, and two spaced-apart support feet are installed at the bottom ends of the mounting members.

[0016] In a preferred embodiment, the thread directions of the two ends of the threaded rod are opposite, and the threads at the two ends of the threaded rod are symmetrically distributed about the central axis of the threaded rod.

[0017] The technical effects and advantages of the present utility model:

[0018] The articulated movable frame and fixed frame are fixed by fasteners, so that the product can be fixed. Then, the support shaft is driven to rotate by the forward and reverse motor, and the support shaft drives the product on the movable frame and fixed frame to reciprocate in contact with the sand material at the bottom of the mixing and spraying tank in a forward and reverse manner. Thus, the sand material can be wrapped around the outside of the product. Also, because the overall structure is encapsulated inside the mixing and spraying tank, it can effectively prevent the sand material from splashing out and causing pollution, and can also prevent the overall operation of the equipment from reducing flexibility. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 It is a side sectional view of the mixing and spraying tank of the present utility model;

[0021] Figure 3 It is an exploded view of the movable frame of the present utility model;

[0022] Figure 4 It is a schematic diagram of the encapsulation member of the present utility model after adjustment;

[0023] Figure 5This is the rear view of the threaded rod of the present utility model.

[0024] The reference numerals are: 1, mixing and spraying tank; 2, support shaft; 3, fixed frame; 4, movable frame; 5, opening; 6, filter screen; 7, fastener; 8, forward and reverse motor; 9, feed pipe; 10, discharge pipe; 11, operation port; 12, encapsulation member; 13, positioning member; 14, threaded rod; 15, moving seat; 16, connecting bracket; 17, servo motor; 18, mounting member; 19, support leg. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Referring to the attached drawings of the specification Figures 1-5 , the present utility model provides a mixing and spraying device for shell-making raw materials in investment casting, including a mixing and spraying tank 1, and a processing assembly for mixing and spraying shell-making raw materials in investment casting is arranged inside the mixing and spraying tank 1;

[0027] As Figure 2 and 3 shown, the processing assembly includes a support shaft 2 movably installed inside the mixing and spraying tank 1 through bearings, and multiple groups of fixing members for fixing products are arranged outside the support shaft 2; each fixing member includes a fixed frame 3 and a movable frame 4 hinged to each other, the fixed frame 3 is installed outside the support shaft 2, openings 5 are formed inside both the fixed frame 3 and the movable frame 4, and filter screens 6 are installed inside one ends of the two openings 5 away from each other; a fastener 7 is arranged outside one end of the movable frame 4 away from the support shaft 2, the fastener 7 penetrates through the movable frame 4 and extends into the fixed frame 3, and the fastener 7 is in threaded connection with the fixed frame 3; a forward and reverse motor 8 is installed at the rear side of the mixing and spraying tank 1, and an output shaft of the forward and reverse motor 8 penetrates through the mixing and spraying tank 1 and is fixed together with the support shaft 2.

[0028] As Figure 1 , 2 and 4 shown, a feed pipe 9 is fixedly communicated with the top of the mixing and spraying tank 1, and a discharge pipe 10 is fixedly communicated with the bottom end of the mixing and spraying tank 1. The sand material is conveyed into the mixing and spraying tank 1 through the feed pipe 9 for processing and use, and the arrangement of the discharge pipe 10 facilitates the staff to discharge the sand material in the mixing and spraying tank 1.

[0029] As Figure 4As shown, operation openings 11 are provided on both sides of the top end of the mixing and spraying tank 1. An encapsulation member 12 is provided inside the operation opening 11. Through the setting of the operation opening 11, it is convenient for the staff to operate the product between the movable frame 4 and the fixed frame 3 through the operation opening 11. The setting of the encapsulation member 12 can block the operation opening 11 to prevent the abrasive material during processing from splashing out through the operation opening 11 and causing pollution.

[0030] As Figure 2 , 4 and as shown in Figure 5, two positioning members 13 are installed on the front side of the mixing and spraying tank 1. A threaded rod 14 is installed between the two positioning members 13 and is movably connected through a bearing. Two moving seats 15 are threadedly connected to the outside of the threaded rod 14. A connecting bracket 16 is installed at the front end of the moving seat 15. The rear side of the end of the connecting bracket 16 away from the moving seat 15 is fixedly connected to the front side of the encapsulation member 12. By driving the two moving seats 15 to move inward or outward through the threaded rod 14, the moving seat 15 drives the encapsulation member 12 to separate from or contact the operation opening 11 through the connecting bracket 16, thereby improving the convenience for the staff to open and close the operation opening 11. A servo motor 17 is installed on the side of one of the positioning members 13 away from the threaded rod 14. The output shaft of the servo motor 17 penetrates through the positioning member 13 and is fixedly connected to the threaded rod 14. Through the connection between the servo motor 17 and the threaded rod 14, the servo motor 17 can drive the threaded rod 14 to rotate, and drive the two moving seats 15 to move synchronously inward or outward through the threaded rod 14.

[0031] As Figure 1 and 4 shown in Figure, mounting members 18 are installed on both sides of the bottom end of the mixing and spraying tank 1. Two spaced-apart supporting feet 19 are installed at the bottom end of the mounting member 18. The mixing and spraying tank 1 is supported and fixed by the supporting feet 19 on the mounting member 18 to ensure the stability of the mixing and spraying tank 1.

[0032] As Figure 4 and 5 shown, the thread directions of the two ends of the threaded rod 14 are opposite, and the threads at both ends of the threaded rod 14 are symmetrically distributed about the central axis of the threaded rod 14. By setting the thread directions of the two ends of the threaded rod 14 to be opposite, the threaded rod 14 can drive the two moving seats 15 to move synchronously inward or outward, thereby achieving the effect of convenient opening and closing of the operation opening 11 by the staff.

[0033] First, the staff unfolds the movable frame 4 and places the product between the two filter meshes 6 between the fixed frame 3 and the movable frame 4, thereby achieving the effect of fixing and limiting the product. Then, the movable frame 4 is fixed to the fixed frame 3 by the fastener 7 to ensure the limiting effect of the movable frame 4 on the product;

[0034] After fixation, the staff drives the support shaft 2 to rotate through the forward and reverse motor 8. The support shaft 2 simultaneously drives the products on the fixed frame 3 and the movable frame 4 to rotate back and forth in both directions, so that the products can contact the sand material located at the bottom of the mixing and spraying tank 1, thereby enabling the sand material to wrap around the outside of the products.

[0035] After the processing is completed, the servo motor 17 is started to drive the threaded rod 14 to rotate. The threaded rod 14 drives the two moving seats 15 to move outward synchronously, and then drives the encapsulation member 12 connected to the connection bracket 16 to move outward, thereby facilitating the staff to perform the material taking operation on the movable frame 4 through the operation port 11.

[0036] The overall structure is encapsulated inside the mixing and spraying tank 1, which can prevent the sand material from splashing out and polluting the processing environment, and can also prevent the overall operation of the equipment from reducing flexibility.

[0037] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A raw material mixing and spraying device for shell making in investment casting, including a mixing and spraying tank (1), characterized in that: Inside the mixing and spraying tank (1), there is a processing component for mixing and spraying the shell-making raw materials used in investment casting; The processing component includes a support shaft (2) movably installed inside the mixing and spraying tank (1) through bearings. Multiple fixing parts for fixing products are arranged outside the support shaft (2); Each fixing part includes a hinged fixing frame (3) and a movable frame (4). The fixing frame (3) is installed outside the support shaft (2). Openings (5) are formed inside both the fixing frame (3) and the movable frame (4). Filter meshes (6) are installed inside one ends of the two openings (5) away from each other; A fastening part (7) is arranged outside one end of the movable frame (4) away from the support shaft (2). The fastening part (7) penetrates through the movable frame (4) and extends into the fixing frame (3). The fastening part (7) is in threaded connection with the fixing frame (3); A forward and reverse motor (8) is installed at the rear side of the mixing and spraying tank (1). The output shaft of the forward and reverse motor (8) penetrates through the mixing and spraying tank (1) and is fixed to the support shaft (2).

2. The shell-making raw material mixing and spraying equipment for investment casting according to claim 1, characterized in that: A feed pipe (9) is fixedly communicated with the top of the mixing and spraying tank (1), and a discharge pipe (10) is fixedly communicated with the bottom end of the mixing and spraying tank (1).

3. The shell-making raw material mixing and spraying equipment for investment casting according to claim 1, wherein: Operation openings (11) are formed on both sides of the top end of the mixing and spraying tank (1). Sealing components (12) are arranged inside the operation openings (11).

4. The shell-making raw material mixing and spraying equipment for investment casting according to claim 3, characterized in that: Two positioning parts (13) are installed on the front side of the mixing and spraying tank (1). A threaded rod (14) movably connected through bearings is installed between the two positioning parts (13). Two moving seats (15) are in threaded connection with the outside of the threaded rod (14). A connecting bracket (16) is installed at the front end of the moving seat (15). The rear side of one end of the connecting bracket (16) away from the moving seat (15) is fixed to the front side of the sealing component (12).

5. The shell making raw material mixing and spraying equipment for investment casting according to claim 4, characterized in that: A servo motor (17) is installed on one side of one of the positioning parts (13) away from the threaded rod (14). The output shaft of the servo motor (17) penetrates through the positioning part (13) and is fixed to the threaded rod (14).

6. The shell-making raw material mixing and spraying equipment for investment casting according to claim 1, characterized in that: Mounting parts (18) are installed on both sides of the bottom end of the mixing and spraying tank (1). Two spaced-apart support feet (19) are installed at the bottom ends of the mounting parts (18).

7. A raw material mixing and spraying device for shell making in investment casting according to claim 4, characterized in that: The thread pitches of the two ends of the threaded rod (14) are opposite, and the threads at the two ends of the threaded rod (14) are symmetrically distributed about the central axis of the threaded rod (14).

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