Auxiliary sand shooting device for cold core brake disc mold

Abstract

The utility model discloses an auxiliary sand shooting device for a cold core brake disc mold, and relates to the related technical field of brake disc casting. The device comprises a model box, a closed box, positioning blocks and a flow guide column, the closed box is arranged at the top of the model box, the bottom of the closed box is open, bayonets are formed in the two sides of the bottom of the closed box, the positioning blocks are fixed to the upper portions in the two bayonets, and a supporting table is fixed to the top of the model box in a penetrating mode; a flow guide column is fixed to the top center of the supporting table. Through the arrangement of the model box, the closed box, the positioning block and the flow guide column, the problems that in the sand shooting process of the brake disc mold, sand shooting at the corner position is not uniform, so that model filling is not uniform, and a sand grain conveying structure and the sand blasting mold are inconvenient to align when being combined together are solved; the sand blasting mold has the advantages that filling can be more uniform in the sand blasting process of the brake disc mold, and a sand grain conveying structure and the sand blasting mold are combined together to be aligned more conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field related to brake disc casting, in particular to an auxiliary sand shooting device for a cold core brake disc mold. Background Art

[0002] Brake disc mold sand shooting is an important step in the casting process, which involves spraying sand into specific areas of the mold to form the internal shape of the casting. This process is usually used when making sand cores, which are negative replicas of the internal cavities of the casting. In the production of brake discs, the sand shooting process is crucial to ensure the accuracy and quality of the castings, but it still has the following disadvantages in actual use:

[0003] During the sand shooting process of the brake disc mold, the sand is directly transported to the spray gun through the sand shooting structure, and the sand is shot through the sand shooting structure. However, during the sand shooting process, the sand is directly transported to the sand blasting equipment through the pipeline for sand shooting. There are four brake disc sand cores in one mold, and the sand falling from the top always falls in the middle position. After the mold is closed, when the compressed air blows the fallen sand through the sand shooting hole into the cavity below, the four corners are always not filled well and the filling is not uniform;

[0004] During the sand shooting process of the brake disc mold, the casting sand needs to be restricted by a box body, and the casting sand is sprayed into the model cavity for molding by high-pressure air. However, when the sand shooting mold is working, the mold and the structure for conveying sand particles need to be combined together. However, when the structure for conveying sand particles and the sand blasting mold are combined together, they need to be carefully aligned, which makes the operation inconvenient. Utility Model Content

[0005] The utility model aims to provide an auxiliary sand-shooting device for a cold-core brake disc mold. By arranging a model box, a closing box, a positioning block and a guide column, the utility model solves the problem that uneven sand-shooting at corners during the sand-shooting process of the brake disc mold easily causes uneven filling of the model, and the structure for conveying sand particles and the sand-blasting mold are difficult to align together.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is an auxiliary sand-shooting device for a cold-core brake disc mold, comprising a model box, a closing box, a positioning block and a guide column. The top of the model box is provided with a closing box, the bottom of the closing box is open, and bayonet holes are provided on both sides of the bottom of the closing box, and the upper parts of the two bayonet holes are fixed with positioning blocks. A support platform is fixed through the top of the model box, and a guide column is fixed at the top center of the support platform. When working, the support platform is fixed therein through the model box, the space above the model box outside the support platform is closed through the closing box, the position of the model box is determined by the positioning block, and the casting sand entering the closing box is evenly dispersed through the guide column.

[0008] Furthermore, a plurality of sand delivery holes are vertically opened in the support platform, and fixed plates are fixed on the upper parts of both sides of the support platform, and the fixed plates are fixed on the top of the model box. A plug rod is fixed at the center of the top of each fixed plate, and the support platform transports casting sand into the model box through the sand delivery holes.

[0009] Furthermore, a fixed pipe is fixedly connected to the center of the top of the closed box, and closed frames are fixed in front and behind the bayonet at the lower edge of the closed box. The two closed frames are symmetrical to each other. A mounting frame is fixed on the top of the closed box. The closed box sprays casting sand and air into the model box through the fixed pipe.

[0010] Furthermore, a bell mouth is provided at the center of the bottom of the positioning block, and a socket is provided in the positioning block at the top of the bell mouth. The inner diameter of the socket is equal to the diameter of the insertion rod. The insertion rod is inserted into the socket, and the positioning block cooperates with the bell mouth and the socket so that the closed box and the model box are accurately combined together.

[0011] Furthermore, the two fixing plates are movably connected in the bayonet below the positioning block, the fixing plates are movably connected between the two closed frames, and the fixing plates are movably connected to each other through the bayonet.

[0012] Furthermore, a conveying block is fixed to the top of the guide column, the conveying block is hemispherical, and sand conveying troughs are provided in a circular array around the guide column outside the conveying block. The guide column conveys casting sand to the sand conveying trough through the conveying block.

[0013] The utility model has the following beneficial effects:

[0014] The utility model solves the problem that uneven sand shooting at corners of a brake disc mold may easily cause uneven model filling during the sand shooting process by arranging a model box, a closed box and a guide column. The casting sand is conveyed into the closed box through a fixed pipe, falls onto a conveying block at the top of the guide column on a support table, is conveyed to the periphery of the guide column through the conveying block, is conveyed to the entire support table surface through the periphery of the guide column, and is evenly distributed on the top of the support table under the guidance of a sand conveying trough. At the same time, air is conveyed to the guide column through a fixed pipe through a structure for conveying high-pressure air, is evenly dispersed through the guide column, and is blown onto the casting sand on the top of the support table, so that the casting sand is evenly conveyed into the model box through the sand conveying hole, so that the sand shooting at the corners of the brake disc mold during the sand shooting process is more even.

[0015] The utility model solves the problem of inconvenience in aligning the structure of the brake disc mold for conveying sand grains and the sandblasting mold when they are combined together by arranging the model box, the closing box and the positioning block. The external lifting structure is started, and the closing box is driven to descend through the lifting structure, so that the bayonet at the bottom of the closing box is clamped on the fixed plate, so that the fixed plate and the positioning block abut against each other. In the process of the closing box descending, the insertion rod is guided into the insertion hole on the positioning block through the bell mouth, so that when working, the position between the model box and the closing box is determined and they are tightly sewn together. At the same time, the closing frame is movably connected to the outer side of the support platform, so that the position between the model box and the closing box is closed, which makes it more convenient to align the structure of the brake disc mold for conveying sand grains and the sandblasting mold when they are combined together. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a disassembled structural stereogram of a cold core brake disc mold auxiliary sand shooting device;

[0018] Figure 2 It is a three-dimensional diagram of the model box structure;

[0019] Figure 3 It is a three-dimensional diagram of the closed box structure;

[0020] Figure 4 It is a three-dimensional diagram of the closed box structure when viewed from above;

[0021] Figure 5 It is a three-dimensional diagram of the cross-sectional structure of the positioning block;

[0022] Figure 6 It is a three-dimensional diagram of the guide column structure;

[0023] Figure 7 This is a stereoscopic diagram of the assembly structure of a cold core brake disc mold auxiliary sand shooting device.

[0024] Reference numerals:

[0025] 1. Model box; 101. Support platform; 102. Sand delivery hole; 103. Fixing plate; 104. Insertion rod; 2. Closing box; 201. Bayonet; 202. Fixing pipe; 203. Closing frame; 3. Positioning block; 301. Plug hole; 302. Bell mouth; 4. Guide column; 401. Sand delivery trough; 402. Delivery block; 5. Mounting frame. DETAILED DESCRIPTION

[0026] 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 of 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. Specific embodiment 1

[0027] See also Figure 1-7 The utility model is an auxiliary sand-shooting device for a cold-core brake disc mold, comprising a model box 1, a closing box 2, a positioning block 3 and a guide column 4. A closing box 2 is arranged on the top of the model box 1. When the model box 1 is working, the top of the model box 1 is closed by the closing box 2 during sandblasting. The bottom of the closing box 2 is open, and bayonet holes 201 are provided on both sides of the bottom of the closing box 2. The closing box 2 fixes the positioning block 3 through the bayonet holes 201. The upper parts of the two bayonet holes 201 are fixed with positioning blocks 3. The positions of the model box 1 and the closing box 2 are determined by the positioning blocks 3. A support platform 101 is fixed through the top of the model box 1. When the support platform 101 is working, it provides supporting support for casting sand. A guide column 4 is fixed on the top center of the support platform 101. The casting sand entering the top of the support platform 101 is transported to the support platform 101 through the guide column 4.

[0028] Specifically, a plurality of sand delivery holes 102 are vertically opened in the support platform 101, and fixed plates 103 are fixed to the upper parts of both sides of the support platform 101, and the fixed plates 103 are fixed to the top of the model box 1. An insertion rod 104 is fixed to the center of the top of each fixed plate 103. When the support platform 101 is working, the casting sand is transported to the model box 1 for casting through the sand delivery holes 102, and the insertion rod 104 is connected through the fixed plate 103, and the model box 1 and the closed box 2 are positioned together through the insertion rod 104.

[0029] Furthermore, a fixed pipe 202 is fixedly connected to the center of the top of the closed box 2, and the top of the fixed pipe 202 is connected to a three-way pipe for conveying casting sand and compressed air. A closed frame 203 is fixed in front and rear of the bayonet 201 at the lower edge of the inner part of the closed box 2. The two closed frames 203 are symmetrical to each other. A mounting frame 5 is fixed to the top of the closed box 2. When the closed box 2 is working, the casting sand is conveyed into it through the fixed pipe 202, and the gap between the outer side of the support platform 101 and the fixed plate 103 and the closed box 2 is closed through the cooperation of the closed frame 203. The closed box 2 is connected to the external lifting structure through the mounting frame 5, and the closed box 2 is driven to rise and fall through the external lifting structure.

[0030] Furthermore, a bell mouth 302 is provided at the center of the bottom of the positioning block 3, and a socket 301 is provided in the positioning block 3 at the top of the bell mouth 302. The inner diameter of the socket 301 is equal to the diameter of the insertion rod 104. The insertion rod 104 is inserted into the socket 301. The positioning block 3 guides the insertion rod 104 to enter through the bell mouth 302, and inserts the insertion rod 104 into the socket 301, so that the model box 1 and the closed box 2 are assembled.

[0031] Furthermore, the two fixing plates 103 are movably connected in the slots 201 below the positioning block 3 , and the fixing plates 103 are movably connected between the two closing frames 203 , so that the model box 1 and the closing box 2 are restrained together.

[0032] The operation process of this embodiment is as follows: when working, the external lifting structure is started, and the closed box 2 is driven to descend through the lifting structure, so that the bayonet 201 at the bottom of the closed box 2 is stuck on the fixed plate 103, so that the fixed plate 103 and the positioning block 3 are abutted against each other. In the process of the closed box 2 descending, the insertion rod 104 is guided into the insertion hole 301 on the positioning block 3 through the bell mouth 302, so that when working, the position between the model box 1 and the closed box 2 is determined and tightly sewn together. At the same time, the closed frame 203 is movably connected to the outside of the support platform 101, so that the position between the model box 1 and the closed box 2 is closed. Specific embodiment 2

[0033] See also Figure 1 , 2 , 3, 4, 6, on the basis of the specific embodiment 1, a conveying block 402 is fixed at the top of the guide column 4, the conveying block 402 is hemispherical, and a sand conveying trough 401 is provided in a ring array around the guide column 4 outside the conveying block 402. When working, the casting sand is conveyed to the closed box 2 through the fixed pipe 202, falls on the conveying block 402 at the top of the guide column 4 on the support platform 101, and is conveyed to the side of the guide column 4 through the conveying block 402, and is conveyed to the entire support platform 101 surface through the side of the guide column 4. Under the guidance of the sand conveying trough 401, the casting sand is evenly distributed on the top of the support platform 101, and at the same time, the air is conveyed to the guide column 4 through the fixed pipe 202 through the structure of conveying high-pressure air, and is evenly dispersed through the guide column 4 and blown to the casting sand on the top of the support platform 101, so that the casting sand is evenly conveyed to the model box 1 through the sand conveying hole 102.

[0034] The operation process of this embodiment is as follows: when working, the casting sand is transported to the closed box 2 through the fixed pipe 202, falls on the conveying block 402 at the top of the guide column 4 on the support platform 101, and is transported to the side of the guide column 4 through the conveying block 402, and is transported to the entire support platform 101 surface through the side of the guide column 4, and is guided by the sand conveying trough 401, so that the casting sand is evenly distributed on the top of the support platform 101. At the same time, the air is transported to the guide column 4 through the fixed pipe 202 through the structure of conveying high-pressure air, and is evenly dispersed through the guide column 4 and blown to the casting sand on the top of the support platform 101, so that the casting sand is evenly transported to the model box 1 through the sand conveying hole 102.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cold core brake disc mold auxiliary sand shooting device, comprising a mold box (1), a closing box (2), a positioning block (3) and a guide column (4), characterized in that: A closed box (2) is arranged on the top of the model box (1); the bottom of the closed box (2) is arranged to be open, and both sides of the bottom of the closed box (2) are provided with bayonet holes (201); positioning blocks (3) are fixed to the upper parts of the two bayonet holes (201); a support platform (101) is fixed through the top of the model box (1); and a guide column (4) is fixed to the center of the top of the support platform (101).

2. The auxiliary sand-shooting device for cold core brake disc mold according to claim 1, characterized in that: A plurality of sand conveying holes (102) are vertically opened in the support platform (101), and fixing plates (103) are fixed to the upper parts of both sides of the support platform (101), and the fixing plates (103) are fixed to the top of the model box (1), and a plug rod (104) is fixed to the center of the top of each fixing plate (103).

3. The auxiliary sand-shooting device for cold core brake disc mold according to claim 2, characterized in that: A fixing tube (202) is fixedly connected to the center of the top of the closed box (2), and closed frames (203) are fixed in front and in the rear of the bayonet (201) at the lower edge of the closed box (2), the two closed frames (203) are symmetrical to each other, and a mounting frame (5) is fixed to the top of the closed box (2).

4. The auxiliary sand-shooting device for cold core brake disc mold according to claim 2, characterized in that: A bell mouth (302) is provided at the center of the bottom of the positioning block (3), and a plug hole (301) is provided in the positioning block (3) at the top of the bell mouth (302). The inner diameter of the plug hole (301) is equal to the diameter of the plug rod (104), and the plug rod (104) is plugged into the plug hole (301).

5. The auxiliary sand-shooting device for cold core brake disc mold according to claim 3, characterized in that: The two fixing plates (103) are movably connected in the bayonet (201) below the positioning block (3), and the fixing plates (103) are movably connected between the two closed frames (203).

6. The auxiliary sand-shooting device for cold core brake disc mold according to claim 1, characterized in that: A conveying block (402) is fixed to the top of the guide column (4), the conveying block (402) is hemispherical, and sand conveying grooves (401) are provided in a circular array on the circumference of the guide column (4) outside the conveying block (402).

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