Combined type upper sand box structure

Abstract

The utility model discloses a combined type upper sand box structure which is characterized in that an upper box body is provided with a plurality of exhaust channels, and an upper pressing plate capable of moving up and down is arranged in the upper box body; a plurality of sand inlet grooves with wide upper parts and narrow lower parts are formed in the upper pressing plate, each sand inlet groove is formed by combining a conical part and a threaded connection part, an internal thread structure is arranged on each threaded connection part, the threaded connection parts can be in threaded connection with height adjusting pieces, and the conical short columns and the conical long columns are both of hollow structures; the horizontal sealing plate, the conical short column and the conical long column are each provided with an external thread structure capable of being matched with the threaded connecting part. The combined upper pressing plate is adopted, the upper pressing plate comprising a plurality of height adjusting piece combinations can be designed for different molds, sand grains can be effectively guided to enter a designated position through height adjustment, and the sand shooting efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the field of molding machines, in particular to a combined upper sand box structure. Background Art

[0002] In the existing sand mold making machine, the sand is usually compacted by starting the upper pressure plate after the pressurized sand is shot. However, in the traditional molding machine, the sand shooting port is located on the side of the upper sand box, the uniformity of the sand is poor, the sand is not tightly filled, and dead corners are prone to occur. In order to meet different sand mold making requirements, it is necessary to comprehensively control the flow rate and speed of sand shooting.

[0003] In specific operations, by adjusting the size of the sand shooting holes in the upper sand box, the flow rate of the sand can be controlled, thereby achieving control over the filling of the sand mold. This is very important for making sand molds with complex shapes, which can ensure that the sand is fully filled into every corner of the mold and reduce defects and pores in the sand mold. Adjusting the size of the sand shooting holes in the upper sand box can also control the flow rate of the sand. Different sand mold making requirements may require different sand flow rates. By adjusting the sand shooting holes, the sand flow rate can be accurately controlled to meet the production requirements. The adjustment of the sand shooting holes in the upper sand box may require certain skills and experience. Operators need to understand the requirements of sand mold making and the effects of different sand shooting hole sizes on the sand flow and speed to ensure correct adjustment.

[0004] However, simply adjusting the size of the holes and the flow rate is inefficient, and customizing a special upper platen according to the height and shape of the mold is expensive. Therefore, there is an urgent need for a new type of upper platen on the market to ensure that the sand is fully filled and improve the filling efficiency. Utility Model Content

[0005] In view of the above problems, the utility model aims to provide a combined upper sand box structure with high filling efficiency and an upper pressure plate that can be combined and adjusted.

[0006] To achieve the technical purpose, the solution of the utility model is: a combined upper sand box structure, including a hollow upper box body and a combined upper pressure plate, the upper box body is provided with a plurality of exhaust channels, and the upper box body is provided with an upper pressure plate that can move up and down;

[0007] The upper pressing plate is provided with a plurality of sand feeding grooves which are wide at the top and narrow at the bottom. The sand feeding grooves are composed of a tapered portion and a threaded connection portion. The threaded connection portion is provided with an internal thread structure. The threaded connection portion can be threadedly connected with a height adjustment member.

[0008] The height adjustment member is one or more of a horizontal sealing plate, a conical short column, or a conical long column; the conical short column and the conical long column are both hollow structures, and the horizontal sealing plate, the conical short column and the conical long column are all provided with an external thread structure that can match the threaded connection part, and the height of the external thread structure is greater than the depth of the threaded connection part.

[0009] Preferably, the upper box body comprises an upper cavity and a lower cavity, the vertical section of the upper cavity is a rectangular structure, the vertical section of the lower cavity is a trapezoidal expansion structure with a narrow upper portion and a wide lower portion, and the cross section of the upper cavity is smaller than the minimum cross section of the lower cavity;

[0010] The cross section of the upper pressing plate is an inverted convex shape, and the upper pressing plate is also provided with extended edges around it. After the extended edges are provided, the upper pressing plate can only move up and down in the lower cavity.

[0011] Preferably, a plurality of exhaust holes are provided on the four peripheral edges of the upper pressing plate, and the diameter of the exhaust holes is smaller than the minimum diameter of the sand inlet trough.

[0012] Preferably, an upper frame edge is arranged on the outer side of the upper part of the upper box body, a lower frame edge is arranged on the outer side of the lower part of the upper box body, and a plurality of reinforcing ribs intersecting vertically and horizontally are also arranged on the outer side of the upper box body between the upper frame edge and the lower frame edge.

[0013] Preferably, the upper frame edge is provided with a plurality of connection holes, and the lower frame edge is provided with a plurality of fixing holes, and the lower frame edge can be installed at a designated position of the lifting frame through the fixing holes.

[0014] Preferably, a cylindrical sand inlet channel is provided in each of the tapered short column and the tapered long column.

[0015] The beneficial effects of the utility model are as follows: the application adopts a combined upper pressure plate, and an upper pressure plate with a combination of multiple height adjustment parts can be designed for molds that cannot be designed. The sand particles can be effectively guided to the designated position through height adjustment, thereby further improving the efficiency of sand shooting; at the same time, an upper cavity and a lower cavity structure are adopted, and an upper pressure plate with an extended edge is combined, so that the upper pressure plate can only move up and down in a designated area, which has higher efficiency during operation, lower failure rate, and is easy to use and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model when viewed from the top;

[0018] Figure 3 It is a cross-sectional view of the utility model;

[0019] Figure 4It is a schematic diagram of the structure of the side view of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the upper pressing plate of the utility model. DETAILED DESCRIPTION

[0021] The utility model of the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In order to clearly and completely describe the technical solution, the following embodiments are selected for illustration; based on the contents recorded in this application, other embodiments obtained without creative work are all within the scope of protection of this utility model.

[0022] In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top / bottom" and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of clearly describing the present embodiment, rather than indicating or implying that the device or element referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0023] like Figure 1-5 As shown, the specific embodiment of the utility model is a combined upper sand box structure, including an upper box body 1 with a hollow structure that can match the lower sand box of the molding machine, a combined upper pressing plate 2 that can move up and down is installed in the upper box body 1, a plurality of exhaust channels 3 are arranged on the side wall of the upper box body 1, and the exhaust channels 3 are located between the reinforcing ribs 105. The upper pressing plate 2 that can move up and down is arranged in the upper box body 1;

[0024] The upper pressing plate 2 is provided with a plurality of sand inlet grooves 202 which are wide at the top and narrow at the bottom. The sand inlet grooves 202 are composed of a tapered portion 301 and a cylindrical threaded connection portion 302. The threaded connection portion 302 is provided with an internal thread structure. The lower portion of the threaded connection portion 302 can be threadedly connected with a height adjustment member.

[0025] The height adjustment member generally has three specifications: a horizontal sealing plate 4, a conical short column 5, and a conical long column 6; the conical short column 5 and the conical long column 6 are both hollow structures, and cylindrical sand inlet channels are provided in the conical short column 5 and the conical long column 6. The horizontal sealing plate 4, the conical short column 5, and the conical long column 6 are all provided with external thread structures 7 that can match the threaded connection part 302, and the height of the external thread structure 7 is greater than the depth of the threaded connection part 302.

[0026] In order to facilitate the control of the upper pressure plate so that it can move only in the designated lower cavity area, the upper box body 1 is provided with an upper cavity 101 with vertical side walls and a trumpet-shaped lower cavity 102. The vertical section of the upper cavity 101 is a rectangular structure, and the vertical section of the lower cavity 102 is a trapezoidal expansion structure that is narrow on the top and wide on the bottom. The cross-section of the upper cavity 101 is smaller than the minimum cross-section of the lower cavity 102; the cross-section of the upper pressure plate 2 is an inverted convex shape, and the upper pressure plate 2 is also equipped with extended edges 8 around it. After the extended edges 8 are installed, the upper pressure plate 2 can only move up and down in the lower cavity 102.

[0027] In order to facilitate exhaust and avoid excessive air pressure in the upper sand box affecting the sand shooting operation, a plurality of exhaust holes 201 are provided on the four edges of the upper pressure plate 2 . The diameter of the exhaust hole 201 is smaller than the minimum diameter of the sand inlet groove 202 .

[0028] In order to enhance the strength of the upper box body and facilitate installation, an upper frame edge 103 is provided on the upper outer side of the upper box body 1, a lower frame edge 104 is provided on the lower outer side of the upper box body 1, and a plurality of reinforcing ribs 105 intersecting vertically and horizontally are also provided on the outer side of the upper box body 1 between the upper frame edge 103 and the lower frame edge 104. A plurality of connecting holes 106 are provided on the upper frame edge 103, and a plurality of fixing holes 107 are provided on the lower frame edge 104, and the lower frame edge 104 can be installed at a designated position of the lifting frame through the fixing holes 107.

[0029] The present application adopts a combined upper pressure plate, which can be designed with a combination of multiple height adjustment parts for molds that cannot be designed. The sand particles can be effectively guided to the designated position through height adjustment, further improving the efficiency of sand shooting. At the same time, an upper cavity and a lower cavity structure are adopted, and an upper pressure plate with an extended edge is used, so that the upper pressure plate can only move up and down in a designated area, which has higher efficiency and lower failure rate during operation, and is easy to use and maintain.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. A combined upper sand box structure, characterized in that: It includes an upper box body with a hollow structure and a combined upper pressure plate, wherein the upper box body is provided with a plurality of exhaust passages, and the upper pressure plate which can move up and down is provided in the upper box body; The upper pressing plate is provided with a plurality of sand feeding grooves which are wide at the top and narrow at the bottom. The sand feeding grooves are composed of a tapered portion and a threaded connection portion. The threaded connection portion is provided with an internal thread structure. The threaded connection portion can be threadedly connected with a height adjustment member. The height adjustment member is one or more of a horizontal sealing plate, a conical short column, or a conical long column; the conical short column and the conical long column are both hollow structures, and the horizontal sealing plate, the conical short column and the conical long column are all provided with an external thread structure that can match the threaded connection part, and the height of the external thread structure is greater than the depth of the threaded connection part.

2. The combined upper flask structure according to claim 1 is characterized in that: The upper box body comprises an upper cavity and a lower cavity, the vertical section of the upper cavity is a rectangular structure, the vertical section of the lower cavity is a trapezoidal expansion structure with a narrow upper portion and a wide lower portion, and the cross section of the upper cavity is smaller than the minimum cross section of the lower cavity; The cross section of the upper pressing plate is an inverted convex shape, and the upper pressing plate is also provided with extended edges around it. After the extended edges are provided, the upper pressing plate can only move up and down in the lower cavity.

3. The combined upper flask structure according to claim 1 is characterized in that: A plurality of exhaust holes are also arranged on the four peripheral edges of the upper pressing plate, and the diameter of the exhaust holes is smaller than the minimum diameter of the sand inlet groove.

4. The combined upper flask structure according to claim 1, characterized in that: An upper frame edge is arranged on the outer side of the upper part of the upper box body, a lower frame edge is arranged on the outer side of the lower part of the upper box body, and a plurality of reinforcing ribs intersecting vertically and horizontally are arranged on the outer side of the upper box body between the upper frame edge and the lower frame edge.

5. The combined upper flask structure according to claim 4 is characterized in that: The upper frame edge is provided with a plurality of connection holes, and the lower frame edge is provided with a plurality of fixing holes, and the lower frame edge can be installed at a designated position of the lifting frame through the fixing holes.

6. The combined upper flask structure according to claim 1, characterized in that: The conical short column and the conical long column are both provided with cylindrical sand feeding channels.

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