CN205218003U - Pouring basin positioner that centrifugation roll core casting in -process used - Google Patents

Abstract

The utility model discloses a sprue cup positioning device used in the casting process of the core of a centrifugal roll, which comprises a sprue cup frame fixedly installed in the middle of the sprue cup and a pouring pipe fixedly installed at the bottom of the sprue cup. The first flange is fixed on the outer side of the middle part of the sprue cup, the third flange used to connect with the first flange is set on the top of the sprue cup holder, the fourth flange is set on the top of the pouring tube, and the fourth flange is connected to the sprue cup. The second flange at the bottom end is fixedly connected, and the axis of the pouring pipe coincides with the axis of the sprue cup. The utility model makes the axis of the sprue cup coincide with the axis of the centrifugal layer by installing a positioning device at the lower end of the existing sprue cup. Avoid the problem of uneven thickness or local thinning caused by molten iron scouring the inner wall of the centrifugal layer during the core pouring process.

Description

Sprue cup positioning device used in centrifugal roll core casting process

technical field

The utility model relates to the technical field of centrifugal roll core casting, in particular to a sprue cup positioning device used in the centrifugal roll core casting process.

Background technique

The centrifugal roll is a compound casting roll. The structure of the centrifugal roll generally includes the outer layer (also called the working layer) + (middle layer) + core. The outer layer is mainly the working surface of the roll to ensure the rolling performance of the roll; the core is mainly responsible for the transmission of the roll. The function of the shaft ensures the normal rotation of the roll.

In the process of using a centrifuge to produce centrifugal rolls, the outer and middle layers of the roll (also referred to as the centrifugal layer) are poured separately from the core. The pouring of the centrifugal layer of the roll is first completed by a centrifuge. After the centrifugal layer is poured, the metal cold mold Close with the sand mold riser box and the bottom box, and finally the molten iron is poured into the middle part of the centrifugal layer through the sprue cup to form the core. The existing sprue cup does not have a positioning device. During the core pouring process, the centerline of the sprue cup is easily offset from the centerline of the roll, causing the downstream molten iron to tilt or deviate from the centerline, and the downstream molten iron is easy to impact the metal cold mold The inner wall of the centrifugal layer in the center, the centrifugal layer is washed by molten iron to cause uneven thickness or local thinning, which cannot meet the rolling requirements and easily forms waste products. The locally thinned or unevenly thick centrifugal rolls are likely to cause roll failure during the user's use. , Increase equipment costs and affect normal production.

Utility model content

The technical problem to be solved by the utility model is to provide a sprue cup positioning device used in the casting process of the centrifugal roll core. The positioning device is installed on the lower end of the existing sprue cup so that the axis of the sprue cup is aligned with the axis of the centrifugal layer. coincidence, to avoid the problem of uneven thickness or local thinning caused by molten iron washing the inner wall of the centrifugal layer during the core pouring process.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a sprue cup positioning device used in the casting process of the centrifugal roll core, including a sprue cup holder fixedly installed in the middle of the sprue cup and a sprue cup fixedly installed on the The pouring tube at the bottom of the sprue cup, the first flange is fixed on the outside of the middle part of the sprue cup, the third flange used to connect with the first flange is set on the top of the sprue cup holder, and the fourth flange is set on the top of the sprue cup. The flange, the fourth flange is fixedly connected with the second flange at the bottom end of the sprue cup, and the axis of the pouring pipe coincides with the axis of the sprue cup.

The sprue cup holder includes a cylindrical cylinder and a ring-shaped positioning sub-gate fixedly installed at its lower end. The inner side of the circular positioning sub-gate is fixedly installed with a ring-shaped molding base. The axis of the through hole in the middle of the molding base and the axis of the pouring tube overlap, the bottom end of the pouring tube is in contact with the upper surface of the molding base, and the through hole in the middle of the molding base is used for installing the sprue core.

The positioning sub-compartment is a circular plate-shaped structure, and its outer edge is a conical surface matched with the inner edge of the sub-compartment at the top of the riser box.

Between the first flange installed in the outer middle of the sprue cup and the outer wall of the sprue cup, there are reinforcing plates evenly distributed around the axis of the sprue cup.

The beneficial effect produced by adopting the above technical solution is: by installing the sprue cup holder in the middle of the sprue cup holder, the positioning letter opening installed at the lower end of the sprue cup holder can conveniently make the axis of the sprue cup coincide with the axis of the centrifugal layer of the roll. The pouring tube is fixedly installed at the bottom of the sprue cup, and the sprue core is placed in cooperation with the sprue tube. The axis of the gate core coincides with the axis of the sprue cup, and the gate shape formed by the gate core The axis of the mouth and the axis of the centrifugal layer must coincide. Therefore, it can avoid the erosion of the inner wall of the centrifugal layer during the pouring of the core molten iron, ensure the quality of the core pouring, avoid affecting the thickness of the centrifugal layer, and improve the product quality of the centrifugal roll.

Description of drawings

Fig. 1 is a schematic diagram of the sprue cup structure;

Fig. 2 is a schematic diagram of the sprue cup support structure;

Fig. 3 is a schematic diagram of pouring tube structure;

Fig. 4 is a structural schematic diagram of the molding base;

Fig. 5 is a schematic diagram of gate core structure;

Fig. 6 is a schematic diagram of the installation structure of the sprue cup and the sprue cup bracket;

Fig. 7 is a schematic diagram of the use state of the utility model;

Among them: 1. The first flange; 2. The second flange; 3. The third flange; Mouth box; 9. Roller centrifugal layer.

detailed description

Below in conjunction with the accompanying drawings in the utility model embodiment, the technical solution in the utility model embodiment is clearly and completely described, obviously, the described embodiment is only a part of the utility model embodiment, rather than all implementation example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the following description, a lot of specific details have been set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways that are different from those described here, and those skilled in the art can do so without violating the connotation of the utility model. Under the circumstances, similar promotion is done, so the utility model is not limited by the specific embodiments disclosed below.

As shown in Figure 6-7, the utility model discloses a sprue cup positioning device used in the casting process of the centrifugal roll core, including a sprue cup holder ( See attached drawing 2) and the pouring pipe fixedly installed at the bottom of the sprue cup (see attached drawing 3), the first flange 1 is fixedly installed on the outer side of the middle part of the sprue cup, and the top of the sprue cup holder is set for use with the first method The third flange 3 connected to the flange 1, the fourth flange 5 is arranged at the top of the pouring pipe, the fourth flange 5 is fixedly connected with the second flange 2 at the bottom end of the sprue cup, the axis of the pouring pipe and the sprue cup The axes coincide; the sprue cup holder includes a cylindrical cylinder and a ring-shaped positioning sub-gate 4 fixedly installed at its lower end (see Figure 2). (See Figure 4), the axis of the through hole in the middle of the molding base 6 coincides with the axis of the pouring tube, the bottom end of the casting tube is in contact with the upper surface of the molding base 6, and the through hole in the middle of the molding base 6 is used to install the gate core 7 ( See accompanying drawing 5); said positioning sub-mass mouth 4 is a ring-shaped plate-shaped structure, and its outer edge is a conical surface matched with the inner edge of the sub-mass mouth at the top of the riser box 8; Between the flange 1 and the outer wall of the sprue cup, there are reinforcing plates evenly distributed around the axis of the sprue cup.

In the specific application process, the utility model installs the sprue cup holder in the middle of the sprue cup, and the positioning letter opening installed at the lower end of the sprue cup holder can conveniently make the axis of the sprue cup coincide with the axis of the centrifugal layer of the roll. The pouring tube is fixedly installed at the bottom of the cup. By cooperating with the pouring tube to place the gate core, the axis of the gate core coincides with the axis of the gate cup. The gate axis formed by the gate shape completed by the gate core It must coincide with the axis of the centrifugal layer. Therefore, it can avoid the erosion of the inner wall of the centrifugal layer during the pouring of molten iron in the core, ensure the pouring quality of the core, avoid affecting the thickness of the centrifugal layer, and improve the product quality of the centrifugal roll.

Claims (4)

1. A sprue cup positioning device used in the casting process of the centrifugal roll core is characterized in that: it includes a sprue cup holder fixedly installed in the sprue cup middle part and a sprue cup fixedly installed at the sprue cup bottom. The first flange (1) is fixed on the outer side of the middle part of the sprue cup, the third flange (3) for connecting with the first flange (1) is arranged on the top of the sprue cup frame, and the fourth flange (3) is arranged on the top of the pouring tube. flange (5), the fourth flange (5) is fixedly connected with the second flange (2) at the bottom end of the sprue cup, and the axis of the pouring pipe coincides with the axis of the sprue cup. 2. The sprue cup positioning device used in the casting process of the centrifugal roll core according to claim 1, characterized in that: the sprue cup holder includes a cylindrical cylinder and a circular positioning device fixedly installed at its lower end. The ring shaped base (6) is fixedly installed on the inner side of the annular positioning base (4), the axis of the through hole in the middle of the shaped base (6) coincides with the axis of the pouring tube, and the bottom of the pouring tube is in line with the shape The upper surface of the base (6) is in contact, and the through hole in the middle of the molding base (6) is used for installing the sprue core (7). 3. The sprue cup positioning device used in the casting process of the centrifugal roll core according to claim 2, characterized in that: the positioning sub-gate (4) is a circular plate-shaped structure, and its outer edge is the same as the riser The conical surface that the inner edge of the female and female mouths on the top of the box (8) cooperates. 4. The sprue cup positioning device used in the casting process of the centrifugal roll core according to claim 3, characterized in that: the first flange (1) installed in the outer middle of the sprue cup and the sprue cup outer wall Reinforcing plates uniformly distributed around the axis of the sprue cup are arranged between them.