Plug-in type sand shooting nozzle and sand core mold using same

Abstract

The utility model discloses a plug-in type sand shooting nozzle and a sand core mould using the same, the plug-in type sand shooting nozzle comprises a sand blocking block, two sand blocking block cushion blocks, a gasket pressing block, a heat insulation gasket, a nozzle body and a heat insulation sleeve, and the bottom of the nozzle body is provided with a sand outlet; the bottom of the sand blocking block is installed at the top of the gasket pressing block through the two sand blocking block cushion blocks, the two sand blocking block cushion blocks are distributed in a bilateral symmetry mode, a sand passing space is formed by a gap between the sand blocking block and the gasket pressing block, the bottom of the gasket pressing block is installed at the top of the heat insulation gasket, and the top of the nozzle body is installed at the bottom of the heat insulation gasket. The heat insulation sleeve is detachably installed on the periphery of the sand outlet of the nozzle body. According to the scheme, the problems that the outer surface of a sand outlet of an existing plug-in type sand shooting nozzle can directly make contact with a cavity in a mold in the sand shooting process, high-temperature sand filled in the cavity has extremely high temperature and pressure, and the outer surface of the sand outlet of the plug-in type sand shooting nozzle is prone to being damaged due to long-time high-temperature contact are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plug -in sand shooting nozzle, concretely is a kind of plug -in sand shooting nozzle and sand core mould using it. BACKGROUND

[0002] In the traditional horizontal core shooter sand shooting process, sand shooting process relies on the sand shooting channel formed by metal sand shooting sleeve, sand shooting plate and cavity. After this process is completed, sand material will be left in the metal sand shooting sleeve, forming a sand shooting column. The sand shooting column is tightly combined with the sand core and becomes part of the sand core. Artificial removal of the sand shooting column and polishing of the height difference between the sand shooting column and the sand core surface are required to obtain the final sand core. A series of manual operations result in low production efficiency of the sand core. To solve the above problems, a plug-in sand shooting nozzle is proposed. The sand shooting nozzle is directly installed on the sand shooting plate and injects sand material into the cavity of the mold, achieving efficient molding of the sand core. Compared with the traditional sand shooting process, the plug-in sand shooting nozzle does not form a sand shooting column inside after sand shooting is completed, thereby eliminating the need for artificial removal of the sand shooting column and subsequent polishing steps, improving the production efficiency of the sand core. However, the outer surface of the sand outlet of the plug-in sand shooting nozzle directly contacts the cavity inside the mold during sand shooting, and the high-temperature sand material filled in the cavity has extremely high temperature and pressure. Long-term high-temperature contact can easily damage the outer surface of the sand outlet of the plug-in sand shooting nozzle, thereby affecting the service life of the sand shooting nozzle. SUMMARY

[0003] To solve the above problems, the utility model provides a plug-in sand shooting nozzle and a sand core mold using the same. The plug-in sand shooting nozzle is directly installed on the sand shooting plate and injects sand material into the cavity of the mold, achieving efficient molding of the sand core. Compared with the traditional sand shooting process, the plug-in sand shooting nozzle does not form a sand shooting column inside after sand shooting is completed, thereby eliminating the need for artificial removal of the sand shooting column and subsequent polishing steps, improving the production efficiency of the sand core. However, the outer surface of the sand outlet of the plug-in sand shooting nozzle directly contacts the cavity inside the mold during sand shooting, and the high-temperature sand material filled in the cavity has extremely high temperature and pressure. Long-term high-temperature contact can easily damage the outer surface of the sand outlet of the plug-in sand shooting nozzle, thereby affecting the service life of the sand shooting nozzle.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A plug-in sand shooting nozzle includes a sand blocking block, at least two sand blocking block pads, a gasket pressing block, a heat insulation gasket, a nozzle body and a heat insulation sleeve. The middle part of the gasket pressing block is provided with a first opening, and the middle part of the heat insulation gasket is provided with a second opening. The top of the nozzle body is provided with a sand inlet, and the bottom of the nozzle body is provided with a sand outlet.

[0006] The bottom of the sand block is installed on the top of the gasket pressing block through two sand block pads which are symmetrically distributed left and right, the gap between the sand block and the gasket pressing block forms a sand passing space, the bottom of the gasket pressing block is installed on the top of the heat insulation gasket, the top of the nozzle body is installed on the bottom of the heat insulation gasket, the first opening is communicated with the second opening, the second opening is communicated with the sand inlet, and the heat insulation sleeve is detachably installed on the outer periphery of the sand outlet of the nozzle body.

[0007] Preferably, a plurality of sand blocking pieces are further included, and each of the plurality of sand blocking pieces is reversibly connected to the bottom of the heat insulation sleeve.

[0008] Preferably, the periphery of the heat insulation sleeve is provided with two convex strips which are arranged in an up-down distribution.

[0009] Preferably, the sand block is provided with two first through holes, the sand block pad is provided with a second through hole, the gasket pressing block is further provided with two third through holes, and the heat insulation gasket is further provided with two fourth through holes; the two third through holes are respectively located on the left and right sides of the first opening, and the two fourth through holes are respectively located on the left and right sides of the second opening; the two first through holes are respectively communicated with the corresponding second through holes, the two second through holes are respectively communicated with the corresponding third through holes, and the two third through holes are respectively communicated with the corresponding fourth through holes.

[0010] Preferably, the nozzle body comprises a cylindrical barrel and a boss, and the boss is arranged on the outer side surface of the cylindrical barrel.

[0011] More preferably, the periphery of the boss is uniformly provided with three notches, and the three notches are in a circular arc structure.

[0012] Another aspect of the present application provides a sand core mold, which comprises the plug-in sand nozzle, a sand shooting cylinder, a sand shooting plate and a mold body, the inside of the mold body is provided with a cavity; the sand shooting cylinder is installed on the top of the sand shooting plate, the plug-in sand nozzle is arranged in the sand shooting plate, the bottom of the sand shooting plate is installed on the top of the mold body, and the inside of the plug-in sand nozzle is communicated with the cavity.

[0013] The technical scheme provided by the present application can have the following beneficial effects:

[0014] In the present application, the heat insulation sleeve is installed at the sand outlet of the nozzle body, which can effectively prevent the outer surface of the sand outlet of the nozzle body from directly contacting the high-temperature sand in the cavity of the mold during sand shooting, thereby preventing the outer surface of the sand outlet of the nozzle body from being exposed to a high-temperature environment for a long time, preventing the outer surface of the sand outlet of the nozzle body from being damaged, and prolonging the service life of the plug-in sand nozzle. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is an explosive schematic view of an insertable sand shooting nozzle;

[0016] Figure 2 is a structural schematic view of an insertable sand shooting nozzle;

[0017] Figure 3 is a partial exploded view of one of the embodiments in the present application;

[0018] Figure 4 is a sectional view of a sand core mold.

[0019] Wherein, 1, sand blocking block; 2, sand blocking block pad; 3, gasket pressing block; 4, heat insulation gasket; 5, nozzle body; 6, heat insulation sleeve; 7, sand passing space; 8, sand shooting cylinder; 9, sand shooting plate; 10, mold body; 11, sand blocking piece; 12, first through hole; 20, second through hole; 31, first opening; 32, third through hole; 41, second opening; 42, fourth through hole; 51, sand inlet; 52, sand outlet; 53, cylindrical cylinder; 54, boss; 60, convex strip; 100, cavity; 540, notch. DETAILED DESCRIPTION

[0020] The technical scheme of the present application will be further described below in combination with the drawings and through specific embodiments.

[0021] In the description of the present application, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0022] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0023] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term '' install '' '' splice '' '' connection '' should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can be indirectly connected through intermediate medium, can be two element internal communication. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0024] A plug-in sand nozzle, comprising a sand block 1, at least two sand block pads 2, a gasket pressing block 3, a heat insulation gasket 4, a nozzle body 5 and a heat insulation sleeve 6, a first opening 31 is formed in the middle of the gasket pressing block 3, a second opening 41 is formed in the middle of the heat insulation gasket 4, a sand inlet 51 is arranged at the top of the nozzle body 5, and a sand outlet 52 is arranged at the bottom of the nozzle body 5.

[0025] The bottom of the sand block 1 is installed on the top of the gasket pressing block 3 through two sand block pads 2, the two sand block pads 2 are symmetrically distributed left and right, the gap between the sand block 1 and the gasket pressing block 3 forms a sand passing space 7, the bottom of the gasket pressing block 3 is installed on the top of the heat insulation gasket 4, the top of the nozzle body 5 is installed on the bottom of the heat insulation gasket 4, the first opening 31 and the second opening 41 are in communication, the second opening 41 and the sand inlet 51 are in communication, and the heat insulation sleeve 6 is detachably installed on the outer periphery of the sand outlet 52 of the nozzle body 5.

[0026] The utility model discloses a kind of plug-in sand nozzles, in the embodiment, as Figures 1-4As shown, the sand blocking block 2 is provided with two. The plug-in sand nozzle is applied in a sand core mold, which also includes a sand shooting cylinder 8, a sand shooting plate 9 and a mold body 10, the inside of the mold body 10 is provided with a cavity 100, the sand shooting cylinder 8 is installed on the top of the sand shooting plate 9, the plug-in sand nozzle is provided on the sand shooting plate 9, and the sand injection into the cavity 100 is accurately controlled through the plug-in sand nozzle, so that the sand fills the entire cavity 100, so as to realize the molding of the sand core. When not shooting sand, because a large amount of sand is stored in the sand shooting cylinder 8, the setting of the sand blocking block 1 can prevent too much sand from entering the inside of the nozzle body 5 in advance when not shooting sand, causing sand leakage. The setting of two sand blocking block pads 2 can better support the sand blocking block 1. When shooting sand, the sand first enters the sand passing space 7, then passes through the first opening 31, the second opening 41 and the sand inlet 51 in turn, and enters the inside of the nozzle body 5, and finally enters the cavity 100 through the sand outlet 52. Among them, the sand flowing in the nozzle body 5 will generate heat by friction with the inner wall of the nozzle body 5, and the setting of the heat insulation gasket 4 can prevent the heat generated by friction from being transmitted to the sand passing space 7, so that the sand in the sand passing space 7 is agglomerated due to high temperature, thereby affecting the flow of sand. The setting of the gasket pressing block 3 can effectively fix the heat insulation gasket 4 and prevent the heat insulation gasket 4 from moving. Since the heat insulation sleeve 6 is detachably installed on the outer periphery of the sand outlet 52 of the nozzle body 5, the installation and replacement of the heat insulation sleeve 6 are facilitated.

[0027] In the present scheme, by installing the heat insulation sleeve 6 at the sand outlet 52 of the nozzle body 5, the outer surface of the sand outlet of the nozzle body 5 can be effectively prevented from directly contacting the high-temperature sand in the cavity of the mold during sand shooting, thereby preventing the outer surface of the sand outlet of the nozzle body 5 from being exposed to a high-temperature environment for a long time, preventing the outer surface of the sand outlet of the nozzle body 5 from being damaged, and thereby improving the service life of the plug-in sand nozzle.

[0028] Preferably, a plurality of sand blocking pieces 11 are further included, and the plurality of sand blocking pieces 11 are reversibly connected to the bottom of the heat insulation sleeve 6. Figure 3 As shown in the embodiment, the sand blocking piece 11 is provided with four pieces. Before sand shooting, the sand blocking piece 11 plays a sand blocking role, so that the sand outlet 52 of the nozzle body 5 is in a closed state. When shooting sand, the sand blocking piece 11 is flipped outward due to the sand shooting pressure, so that the sand outlet 52 of the nozzle body 5 is opened, and the sand can smoothly enter the inside of the cavity 100.

[0029] Preferably, the heat insulation sleeve 6 is provided with two convex strips 60 on the periphery, and the two convex strips 60 are arranged in an up-down distribution. Figure 1As shown, when the heat insulation sleeve 6 needs to be replaced, the arrangement of the two protrusions 60 can increase the contact area between the hand and the heat insulation sleeve 6, thereby facilitating the disassembly of the heat insulation sleeve 6.

[0030] Preferably, the sand blocking block 1 is provided with two first through holes 12, the two sand blocking block pads 2 are each provided with a second through hole 20, the gasket pressing block 3 is further provided with two third through holes 32, and the heat insulation gasket 4 is further provided with two fourth through holes 42; the two third through holes 32 are respectively located on the left and right sides of the first opening 31, and the two fourth through holes 42 are respectively located on the left and right sides of the second opening 41; the two first through holes 12 are respectively connected to the corresponding second through holes 20, the two second through holes 20 are respectively connected to the corresponding third through holes 32, and the two third through holes 32 are respectively connected to the corresponding fourth through holes 42.

[0031] In this embodiment, as shown in Figure 1 Since the two first through holes 12 are respectively connected to the corresponding second through holes 20, the two second through holes 20 are respectively connected to the corresponding third through holes 32, and the two third through holes 32 are respectively connected to the corresponding fourth through holes 42, two installation channels are formed. When the plug-in sand shooting nozzle is fixed on the sand shooting plate 9, two screws are respectively installed in the corresponding installation channels, so that the bottom of the heat insulation gasket 4 stably abuts against the top of the sand shooting plate 9.

[0032] Preferably, the nozzle body 5 includes a cylindrical barrel 53 and a boss 54, and the boss 54 is arranged on the outer side of the cylindrical barrel 53. In this embodiment, as shown in Figure 1 The arrangement of the cylindrical barrel 53 is conducive to guiding the flow of sand. The arrangement of the boss 54 can increase the structural strength of the entire nozzle body 5, so that it can better withstand various external forces.

[0033] More preferably, the periphery of the boss 54 is uniformly provided with three notches 540, and the three notches 540 are each in a circular arc structure. In this embodiment, as shown in Figure 1 and Figure 4 Since the three notches 540 are each in a circular arc structure, when the plug-in sand shooting nozzle is fixed on the sand shooting plate 9, three screws are respectively installed in the corresponding notches 540, so that the bottom of the boss 54 stably abuts against the bottom of the sand shooting plate 9.

[0034] Another aspect of the present application provides a sand core mold, comprising the insertable sand injection nozzle, a sand injection cylinder 8, a sand injection plate 9 and a mold body 10, the mold body 10 is internally provided with a cavity 100; the sand injection cylinder 8 is installed on the top of the sand injection plate 9, the insertable sand injection nozzle is arranged on the sand injection plate 9, the bottom of the sand injection plate 9 is installed on the top of the mold body 10, and the inside of the insertable sand injection nozzle is communicated with the cavity 100.

[0035] A sand core mold according to the present application is shown in Figure 4 When sand injection is needed, the sand in the sand injection cylinder 8 is injected into the cavity 100 through the insertable sand injection nozzle, so that the sand fills the whole cavity 100, thereby achieving efficient molding of the sand core.

[0036] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the present application, and cannot be interpreted as limiting the protection scope of the present application in any way. Based on the explanations herein, other specific embodiments of the present application can be conceived by those skilled in the art without creative efforts, and these embodiments will all fall within the protection scope of the present application.

Claims

1. A plug-in sand nozzle, characterized by: The sand blocking block, at least two sand blocking block pads, a gasket pressing block, a heat insulation gasket, a nozzle body and a heat insulation sleeve are provided with a first opening in the middle of the gasket pressing block and a second opening in the middle of the heat insulation gasket. The bottom of the sand blocking block is installed on the top of the gasket pressing block through two sand blocking block pads, and the two sand blocking block pads are symmetrically distributed left and right.

2. An insertable shot nozzle according to claim 1, wherein: The gap between the sand blocking block and the gasket pressing block forms a sand passing space.

3. An insertable shot nozzle according to claim 1 wherein: The bottom of the gasket pressing block is installed on the top of the heat insulation gasket, and the top of the nozzle body is installed on the bottom of the heat insulation gasket.

4. An insertable shot nozzle according to claim 1 wherein: The first opening and the second opening are in communication, and the second opening and the sand inlet are in communication. The heat insulation sleeve is detachably installed on the outer periphery of the sand outlet of the nozzle body. A plurality of sand blocking pieces are reversibly connected to the bottom of the heat insulation sleeve.

5. An insertable shot nozzle according to claim 1 wherein: The heat insulation sleeve is provided with two convex strips on the periphery.

6. An insertable shot nozzle according to claim 5, wherein: The sand blocking block is provided with two first through holes, and the sand blocking block pad is provided with a second through hole.

7. A sand core mold characterized by: The gasket pressing block is also provided with two third through holes, and the heat insulation gasket is also provided with two fourth through holes. The two third through holes are respectively located on the left and right sides of the first opening, and the two fourth through holes are respectively located on the left and right sides of the second opening. The two first through holes are respectively connected to the corresponding second through holes, the two second through holes are respectively connected to the corresponding third through holes, and the two third through holes are respectively connected to the corresponding fourth through holes. The nozzle body includes a cylindrical barrel and a boss. The periphery of the boss is uniformly provided with three notches, and the three notches are in circular arc structure. The plug-in sand shooting nozzle, the sand shooting cylinder, the sand shooting plate and the mold body are provided. The sand shooting cylinder is installed on the top of the sand shooting plate, the plug-in sand shooting nozzle is provided in the sand shooting plate, and the bottom of the sand shooting plate is installed on the top of the mold body. The inside of the plug-in sand shooting nozzle is in communication with the cavity.

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