CN217990886U

CN217990886U - Roller die capable of adjusting inner hole diameter of roller die

Info

Publication number: CN217990886U
Application number: CN202222274851.8U
Authority: CN
Inventors: 李焕军; 王素平; 李海超; 吕卫华
Original assignee: Fujian Shenyang Technology Co ltd
Current assignee: Fujian Shenyang Technology Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-12-09
Anticipated expiration: 2032-08-29

Abstract

The utility model relates to a roller die capable of adjusting the diameter of an inner hole of the roller die, which comprises a hollow roller die and a replaceable inner die matched with the hollow inner hole; the inner die is of a cylindrical structure with the outer diameter equal to the inner diameter of the center of the roller die; end covers are arranged at two ends of the roller die; a molding sand layer arranged close to the end face of the inner mold is arranged in the inner hole inclined plane of the end cover; the end cover is fixedly connected with the roller die through a fixing pin. The utility model discloses adjustable centrifugation roller mould hole diameter's centre form has convenience, practicality, safe and reliable, easy operation, and the characteristics that the practicality is strong have not only saved the time of making the roller mould again for the production rhythm has been improved production efficiency, has guaranteed to deliver goods on time for the customer, still can save the cost of manufacture of roller mould in a large number simultaneously, reduces the fund and occupies, improves the economic benefits of enterprise.

Description

Roller die capable of adjusting diameter of inner hole of roller die

Technical Field

The utility model relates to a roll field of making especially relates to a roller die of adjustable roller die hole diameter.

Background

The roll dies are essential important tools for producing centrifugal rolls, special roll dies are required to be designed for each specification of roll in actual production, a large number of roll dies are required to be added in the long-term production process, the single weight of the roll dies is large and is generally about 1.5-4.0 tons, and thus, the capital investment of companies is increased in this respect in the past. The inner die capable of adjusting the diameter of the inner hole of the centrifugal roller die is specially designed and invented in order to reduce capital investment of a company in the aspect of tooling, reduce capital occupation, shorten preparation time of the roller die, shorten production period and guarantee timely delivery.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to solve the above problems in the prior art, the utility model provides a roller die of adjustable roller die hole diameter under the condition that does not have the roller die that the size is suitable, usable current roller die, these usable roller dies are injectd in length suitable, only the roller die that the diameter is big, and the diameter is greater than the required diameter (should design according to the roller die diameter of ordering drawing checking) more than 50 mm.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

a roller die capable of adjusting the diameter of an inner hole of the roller die comprises a hollow roller die and a replaceable inner die matched with the hollow inner hole; the inner die is of a cylindrical structure with the outer diameter equal to the inner diameter of the center of the roller die; end covers are arranged at two ends of the roller die; a molding sand layer arranged close to the end face of the inner mold is arranged in the inner hole inclined plane of the end cover; the end cover is fixedly connected with the roller die through a fixing pin.

Furthermore, the aperture of the opening of the end covers at the two ends of the roller die is larger than that of the inner die connected to the middle part, so that stepped holes for limiting the end covers are formed at the two ends of the roller die.

Furthermore, step holes at two ends of the roller die are conical.

Furthermore, an opening in the middle of the end cover protrudes outwards to form an end cover seam; the outer end face of the molding sand layer is flush with the end cover seam allowance.

Furthermore, the bottom of the inner hole inclined plane is provided with a limiting groove matched with the molding sand layer.

Furthermore, the inner side surface of the molding sand layer is arc-shaped.

Further, the inner hole diameter of the inner side of the molding sand layer is smaller than that of the inner die.

Further, the fixing pin is tapered.

Furthermore, two circles of roller die runways matched with the centrifugal machine are symmetrically arranged on the outer side of the roller die.

Furthermore, a plurality of fixing holes which are arranged towards the circle center and matched with the fixing pins are formed in the circumferential direction of the openings at the two ends of the roller die.

(III) advantageous effects

The utility model has the advantages that: this centre form of adjustable centrifugal roller mould hole diameter has convenient, practical, safe and reliable, easy operation, and the characteristics that the practicality is strong have not only saved the time of making the roller mould again for the production rhythm has been accelerated, has improved production efficiency, has guaranteed to deliver goods for the customer on time, still can save the cost of manufacture of roller mould in a large number simultaneously, reduces the fund and occupies, improves the economic benefits of enterprise.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an exploded view of the present invention;

FIG. 2 is a sectional view of the structure of the present invention;

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the first embodiment, please refer to fig. 1-2:

a roller die capable of adjusting the diameter of an inner hole of the roller die comprises a hollow roller die 2 and a replaceable inner die 1 matched with the hollow inner hole; the inner die 1 is of a cylindrical structure with the outer diameter equal to the inner diameter of the center of the roller die 2; the opening that holding end cover 3 was formed at 2 both ends of roller mould, thereby open-ended aperture is greater than the aperture that the centre form 1 was connected at the middle part and forms spacing end cover 3's step hole at 2 both ends of roller mould, and the step hole can make things convenient for centre form 1's installation on the one hand for centre form 1 possesses the possibility that the disect insertion roller mould 2 is inside to be installed, and on the other hand can conveniently carry on spacingly to end cover 3, simultaneously because end cover 3's setting has also carried out the calibration to centre form 1's position. The step holes at the two ends of the roller die 2 are conical, so that the end cover 3 is more portable to install, can be guided by the conical shape, and is convenient to install.

And a molding sand layer 302 tightly attached to the end face of the inner die 1 is arranged in the inner hole inclined plane 303 of the end cover 3. The middle opening of the end cover 3 protrudes outwards to form an end cover opening 301; the outer end face of the sand mould layer 302 is flush with the end cover sub-opening 301. The bottom of the inner hole inclined plane 303 is provided with a limiting groove 304 matched with the molding sand layer 302. The inner side surface of the molding sand layer 302 is arc-shaped, namely the inner hole of the molding sand layer 302 is horn-shaped, and one end of the inner hole of the molding sand layer 302 with smaller aperture is arranged at the end cover opening 301 and keeps level; the end with the larger bore diameter of the inner bore is arranged towards the inner die 1, and the bore diameter is smaller than the bore diameter of the inner die 1, so that an inward step can be formed at the end part of the inner die 1 when the molding sand layer 302 is tightly attached to the inner die 1, complete contact with the end part of the inner die 1 is ensured, a good sealing effect is provided, and iron (steel) running during outer layer centrifugal casting is prevented; the advantage that the arc setting was personally submitted to the inboard of type sand layer 302 is when carrying out centrifugal casting, and the end cover sand mould of arc shape does benefit to dregs to float to the internal surface direction, can take to the rising head part along with glass dross in the time of the core filling, and the shape of non-circular arc among the prior art, or the irregular dregs come-up of then unfavorable of arc shape, easily produces the inclusion sediment defect. The quality of the centrifugal casting of the roller can be effectively improved through the arrangement of the shape. End cover 3 passes through fixed pin 4 and roller mould 2 fixed connection, and roller mould 2 both ends open-ended axial sets up a plurality of orientation centre of a circle set up with fixed pin 4 complex fixed orifices 202, and fixed pin 4 is the toper, and after the fixed pin inserted fixed orifices 202, support to realize fixing end cover 3 by the outside of end cover 3. Two circles of roller die runways 201 matched with the centrifugal machine are symmetrically arranged on the outer side of the roller die 2. After the roller die runway 201 is matched with a centrifuge, the roller die runway rotates under the action of a riding wheel of the centrifuge, so that centrifugal casting is realized.

The diameter and the length of the inner die 1 are calculated according to the processing allowance and the shrinkage of metal from liquid state to solid state on the diameter and the length according to the ordering drawing of the roller, and the inner surface is coated with refractory materials to form a cavity of the roller body of the roller. The roller die 2 mainly has the function of rotating on a centrifuge at a high speed, and meanwhile, the inner hole is matched with the outer circle of the inner die 1 to play a role in reinforcing and absorbing the heat of liquid metal to accelerate solidification. After the sand mold is manufactured by the end covers 3 at the two sides of the roller die 2, fixing pins 4 are arranged at the two ends of the roller die 2 and form a complete roller body cavity together with the inner mold cavity of the roller die 2.

The production operation process of the product comprises the following steps: the inner die 1 is first fitted into the inner bore of the roller die 2. And (3) molding the end covers 3 at two sides, forming compact molding sand layers 302 in inner hole inclined planes 303 of the end covers 3, flattening the molding sand layers with the end cover seam allowance 301, and brushing and hanging refractory coating layers to finish molding. The end covers 3 at two sides of the manufactured shape are arranged at two end faces of the roller die 2 and are tightened and compacted by the fixing pins 4, so that the sand layer 302 of the end cover 3 is tightly pressed with the inner die 1 without any gap, and the iron (steel) running during the centrifugal casting of the outer layer is prevented. The cavity of the roller is manufactured by using the large-diameter roller die and the roller die internal die, and the casting work can be smoothly finished by matching with other casting processes.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a roll die of adjustable roll die hole diameter which characterized in that: comprises a hollow roller die (2) and a replaceable inner die (1) matched with a hollow inner hole; the inner die (1) is of a cylindrical structure with the outer diameter equal to the inner diameter of the center of the roller die (2); end covers (3) are arranged at two ends of the roller die (2); a molding sand layer (302) which is tightly attached to the end face of the inner mold (1) is arranged in the inner hole inclined plane (303) of the end cover (3); the end cover (3) is fixedly connected with the roller die (2) through a fixing pin (4).

2. The roller die capable of adjusting the inner hole diameter of the roller die as claimed in claim 1, wherein: the opening aperture of the end covers (3) arranged at the two ends of the roller die (2) is larger than the aperture of the middle part connected with the inner die (1), so that step holes for limiting the end covers (3) are formed at the two ends of the roller die (2).

3. The roller die capable of adjusting the inner hole diameter of the roller die as claimed in claim 2, wherein: and step holes at two ends of the roller die (2) are conical.

4. The roll die capable of adjusting the inner hole diameter of the roll die as claimed in claim 1, wherein: the middle opening of the end cover (3) protrudes outwards to form an end cover opening (301); the outer end face of the molding sand layer (302) is flush with the end cover seam allowance (301).

5. The roll die capable of adjusting the inner hole diameter of the roll die as claimed in claim 1, wherein: the bottom of the inner hole inclined plane (303) is provided with a limit groove (304) matched with the molding sand layer (302).

6. The roll die capable of adjusting the inner hole diameter of the roll die as claimed in claim 1, wherein: the inner side surface of the molding sand layer (302) is arc-shaped.

7. The roller die capable of adjusting the inner hole diameter of the roller die as claimed in claim 1, wherein: the inner hole diameter of the inner side of the molding sand layer (302) is smaller than that of the inner die (1).

8. The roller die capable of adjusting the inner hole diameter of the roller die as claimed in claim 1, wherein: the fixing pin (4) is conical.

9. The roller die capable of adjusting the inner hole diameter of the roller die as claimed in claim 1, wherein: and two circles of roller die runways (201) matched with the centrifugal machine are symmetrically arranged on the outer side of the roller die (2).

10. The roller die capable of adjusting the inner hole diameter of the roller die as claimed in claim 1, wherein: the circumference of the openings at the two ends of the roller die (2) is provided with a plurality of fixing holes (202) which are arranged towards the circle center and matched with the fixing pins (4).