Bracket for spraying large sand core

Abstract

The utility model provides a bracket for spraying a large sand core, which comprises a base, a plurality of first support pieces, a plurality of second support pieces and a plurality of third support pieces, the first support pieces, the second support pieces and the third support pieces are used for supporting the sand core, the first support pieces and the third support pieces are fixedly arranged on the base in an array form, and the first support pieces are lower than the third support pieces; second supporting pieces are arranged on the two sides of the array, so that the first supporting pieces, the second supporting pieces and the third supporting pieces are arranged in the circumferential direction, and the second supporting pieces are lower than the first supporting pieces. According to the sand core spraying device, the upper surface and the lower surface of a sand core can be sprayed, and the sand core is prevented from being overturned in the paint spraying process.

Description

Technical Field

[0001] The utility model relates to the field of casting, in particular to a bracket used for spraying large sand cores. Background Art

[0002] In sand casting, in order to improve the surface quality of the casting, it is usually necessary to coat the sand core surface with a layer of refractory material to improve the sand core surface's heat resistance, chemical stability, resistance to molten metal erosion, and resistance to sand sticking.

[0003] In the prior art, when spraying paint on a sand core, the sand core needs to be turned over to achieve full coating. However, the sand core of the hollow subframe is large in size and heavy in weight, and the sand core structure is relatively thin in some parts. The thin parts of the sand core are easily broken and damaged during the turning process. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a bracket for spraying large sand cores.

[0005] The utility model proposes a bracket for spraying large sand cores, comprising a base, a plurality of first support members, a second support member and a third support member for supporting the sand cores, wherein the first support member and the third support member are fixed on the base in an array form, and the height of the first support member is lower than the height of the third support member; the second support member is provided on both sides of the array, so that the first support member, the second support member and the third support member are arranged circumferentially, and the height of the second support member is lower than the height of the first support member.

[0006] Preferably, a rectangular frame is provided on the top of the base, and the rectangular frame surrounds the first support member, the second support member and the third support member; the inner walls around the rectangular frame are fixedly connected to the outer walls of the first support member, the second support member and the third support member respectively.

[0007] Preferably, a step is provided on the top of the third support member located in the middle of the array, and an inclined surface is provided on the tops of the other third support members to avoid interference with the bottom of the sand core.

[0008] Preferably, a fixing plate is fixed between the third supporting member located in the middle of the array and the first supporting member, and the bottom of the fixing plate is fixedly connected to the base to improve the supporting strength of the first supporting member and the third supporting member.

[0009] Preferably, the top of each of the second support members is provided with an inclined surface to avoid interference with the bottom of the sand core.

[0010] Preferably, a positioning portion is provided on the outer side wall of the rectangular frame on the side where the first support member is located, and the positioning portion includes a first positioning column and a second positioning column. The first positioning column and the second positioning column are fixed on the base, and the side walls of the first positioning column and the second positioning column are fixedly connected to the rectangular frame through a fixing block. The distance between the first positioning column and the second positioning column is adapted to the positioning block on the sand core.

[0011] As described above, the bracket for spraying large sand cores involved in the present invention has the following beneficial effects:

[0012] The utility model places the hollow subframe sand core to be sprayed on a bracket, so that each first support member abuts against a support point at the bottom of the first crossbeam of the sand core that does not need to be sprayed, each third support member abuts against a support point at the bottom of the second crossbeam of the sand core that does not need to be sprayed, and the second support members on both sides of the array respectively support the support points at the bottom of the first longitudinal beam and the second longitudinal beam that do not need to be sprayed. The utility model can achieve spraying of the upper and lower surfaces of the sand core and avoids turning the sand core during the spraying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of a bracket for spraying large sand cores is provided in accordance with an embodiment of the present invention.

[0014] Figure 2 An axonometric diagram of an assembly of a bracket and a large sand core for spraying a large sand core is provided for an embodiment of the utility model.

[0015] Figure 3 A front view of a large sand core for spraying and assembling the large sand core is provided for an embodiment of the utility model.

[0016] Figure 4 A side view of a large sand core for spraying and assembling the large sand core is provided for an embodiment of the utility model.

[0017] Description of reference numerals:

[0018] 100. Base; 110. Rectangular frame; 200. First support member; 300. Second support member; 400. Third support member; 410. Step; 500. Sand core; 510. First crossbeam; 520. Second crossbeam; 530. First longitudinal beam; 540. Second longitudinal beam; 600. Fixed plate; 700. Positioning portion; 710. First positioning column; 720. Second positioning column; 730. Fixed block. DETAILED DESCRIPTION

[0019] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0020] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0021] It should be noted that the hollow subframe includes a first crossbeam 510, a second crossbeam 520, a first longitudinal beam 530, and a second longitudinal beam 540. The first crossbeam 510 and the second crossbeam 520 are connected at one end by the first longitudinal beam 530, and the first crossbeam 510 and the second crossbeam 520 are connected at the other end by the second longitudinal beam 540. Support points that do not require spraying are evenly distributed at the bottom of the first crossbeam 510, the first crossbeam 520, the first longitudinal beam 530, and the second longitudinal beam 540. Specifically, the first crossbeam 510 has three support points that do not require spraying, the second crossbeam 520 has three support points that do not require spraying, and the first longitudinal beam 530 and the second longitudinal beam 540 each have one support point that does not require spraying at the bottom.

[0022] like Figure 1-4As shown, the present invention provides an embodiment of a bracket for spraying large sand cores, comprising a base 100, a plurality of first support members 200, a second support member 300, and a third support member 400 for supporting a sand core 500. The first support members 200 and the third support members 400 are fixed to the base 100 in an array, with the first support member 200 being lower than the third support member 400 to match the height difference between the first crossbeam 510 and the second crossbeam 520. Second support members 300 are provided on both sides of the array, so that the first support members 200, the second support members 300, and the third support members 400 are arranged circumferentially. The second support members 300 are lower than the first support member 200 to match the height of the first longitudinal beam 530 and the second longitudinal beam 540, ensuring that the sand core 500 can be stably placed on the bracket. It should be noted that the number of first support members 200, second support members 300, and third support members 400 can be determined based on the number of support points provided at the bottom of the sand core 500 that do not require spraying. Preferably, there are three first support members 200, two second support members 300, and three third support members 400. The first support members 200 correspond to the bottom support points of the first crossbeam 510, the two second support members 300 correspond to the bottom support points of the first longitudinal beam 530 and the second longitudinal beam 540, respectively, and the third support member 400 corresponds to the bottom support point of the second crossbeam 520.

[0023] During use, the sand core 500 is placed on the bracket, with the top of the first support member 200 abutting the support point at the bottom of the first crossbar 510 of the sand core 500, and the top of the third support member 400 abutting the support point at the bottom of the second crossbar 520 of the sand core 500. The second support members 300 on either side of the array abut the first longitudinal beam 530 and the second longitudinal beam 540, respectively. The coating is then sprayed on the upper and lower surfaces of the sand core without turning the core over, to prevent breakage in thin areas of the core.

[0024] Furthermore, if Figure 1-2 As shown, a rectangular frame 110 is provided on the top of the base 100, and the rectangular frame 110 surrounds each first support member 200, the second support member 300 and the third support member 400; the inner walls of the rectangular frame 110 are fixedly connected to the outer walls of each first support member 200, the second support member 300 and the third support member 400, respectively, so as to improve the supporting strength of each support member and prevent the sand core 500 from tipping over during the sand core spraying process.

[0025] Furthermore, if Figure 1As shown, the top of the third support member 400 located in the middle of the array is provided with a step 410, while the tops of the remaining third support members 400 are all provided with inclined surfaces to prevent interference with the bottom of the sand core 500. Because the second crossbeam 520 has a bump near the middle bottom, when each third support member 400 abuts the corresponding support point at the bottom of the second crossbeam 520, the step 410 effectively avoids the bump, preventing direct interference with the middle third support member 400. The inclined surfaces of the remaining third support members 400 also effectively prevent interference with the bumps at both ends of the bottom of the second crossbeam 520.

[0026] Furthermore, if Figure 1 As shown, a fixing plate 600 is fixed between the third supporting member 400 and the first supporting member 200 in the middle of the array, and the bottom of the fixing plate 600 is fixedly connected to the base 100 to improve the supporting strength of the first supporting member 200 and the third supporting member 400 in the middle.

[0027] Furthermore, if Figure 1 As shown, each second support member 300 has an inclined surface on its top. When the sand core 500 is placed on the bracket, the second support members 300 on both sides of the array respectively abut against the support points on the first longitudinal beam 530 and the second longitudinal beam 540. Since the bottoms of the first longitudinal beam 530 and the second longitudinal beam 540 have a convex curved surface near the support point, the inclined surface can effectively prevent the convex curved surface from directly interfering with the second support member 300.

[0028] Furthermore, if Figure 1 and Figure 4 As shown, a positioning portion 700 is provided on the outer wall of the rectangular frame 110 on the side where the first support member 200 is located, and the positioning portion 700 includes a first positioning column 710 and a second positioning column 720. The first positioning column 710 and the second positioning column 720 are fixed on the base 100, and the side walls of the first positioning column 710 and the second positioning column 720 are fixedly connected to the rectangular frame 110 through a fixing block 730, so that the first positioning column 710 and the second positioning column 720 form a certain distance from the rectangular frame 110 to avoid interference between the first positioning column 710 and the second positioning column 720 and the sand core. The distance between the first positioning column 710 and the second positioning column 720 is adapted to the positioning block on the sand core 500.

[0029] Specifically, a positioning block is provided on the first crossbeam 510. When the sand core is placed on the bracket, the positioning block is placed in the gap between the first positioning column 710 and the second positioning column 720. This can ensure that the bottom support points of the first crossbeam 510, the second crossbeam 520, the first longitudinal beam 530 and the second longitudinal beam 540 can abut against their corresponding support members, preventing the sand core 500 from being misplaced and tipping over.

[0030] The utility model places the hollow subframe sand core to be sprayed on a bracket, so that each first support member abuts against a support point at the bottom of the first crossbeam of the sand core that does not need to be sprayed, each third support member abuts against a support point at the bottom of the second crossbeam of the sand core that does not need to be sprayed, and the second support members on both sides of the array respectively support the support points at the bottom of the first longitudinal beam and the second longitudinal beam that do not need to be sprayed. The utility model can achieve spraying of the upper and lower surfaces of the sand core and avoids turning the sand core during the spraying process.

[0031] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A bracket for spraying large sand cores, characterized in that: The invention comprises a base (100), a plurality of first support members (200), a second support member (300) and a third support member (400) for supporting a sand core (500); the first support member (200) and the third support member (400) are fixedly arranged on the base (100) in an array, and the height of the first support member (200) is lower than the height of the third support member (400); the second support members (300) are arranged on both sides of the array, so that the first support member (200), the second support member (300) and the third support member (400) are arranged in a circumferential direction, and the height of the second support member (300) is lower than the height of the first support member (200).

2. The bracket for spraying large sand cores according to claim 1, characterized in that: A rectangular frame (110) is provided on the top of the base (100), and the rectangular frame (110) surrounds the first support member (200), the second support member (300) and the third support member (400); the inner walls around the rectangular frame (110) are respectively fixedly connected to the outer walls of the first support member (200), the second support member (300) and the third support member (400).

3. The bracket for spraying large sand cores according to claim 1 or 2, characterized in that: The third support member (400) located in the middle of the array has a step (410) on its top, and the other third support members (400) have inclined surfaces on their tops to avoid interference with the bottom of the sand core (500).

4. The bracket for spraying large sand cores according to claim 2, characterized in that: A fixing plate (600) is fixedly arranged between the third supporting member (400) located in the middle of the array and the first supporting member (200), and the bottom of the fixing plate (600) is fixedly connected to the base (100) to improve the supporting strength of the first supporting member (200) and the third supporting member (400).

5. The bracket for spraying large sand cores according to claim 1, characterized in that: The top of each of the second support members (300) is provided with an inclined surface to avoid interference with the bottom of the sand core (500).

6. The bracket for spraying large sand cores according to claim 1, characterized in that: A positioning portion (700) is provided on the outer wall of the rectangular frame (110) on the side where the first support member (200) is located, and the positioning portion (700) includes a first positioning column (710) and a second positioning column (720), the first positioning column (710) and the second positioning column (720) are fixedly arranged on the base (100), and the side walls of the first positioning column (710) and the second positioning column (720) are fixedly connected to the rectangular frame (110) through a fixing block (730), and the spacing between the first positioning column (710) and the second positioning column (720) is adapted to the positioning block on the sand core (500).

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