CN209902216U

CN209902216U - Graphite mould

Info

Publication number: CN209902216U
Application number: CN201920143255.1U
Authority: CN
Inventors: 董绍军
Original assignee: Qingdao Futaixing Carbon Products Co Ltd
Current assignee: Qingdao Futaixing Carbon Products Co Ltd
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2020-01-07
Anticipated expiration: 2029-01-28

Abstract

The utility model relates to a graphite die, which comprises a columnar die holder, a ring sleeve and a core rod, wherein one side of the die holder is provided with an insert ring, the insert ring can be abutted against the position outside the ring sleeve to be provided with an internal thread, one end outside the ring sleeve is also fixedly provided with an external thread matched with the internal thread, the core rod is arranged inside the ring sleeve, an annular channel is formed between the core rod and the ring sleeve, and one end of the core rod is connected with the die holder through a bolt; the ring sleeve comprises two half rings which are spliced with each other, and a connecting structure is arranged between the splicing surfaces of the two half rings. The utility model discloses it is convenient to have loading and unloading, effect convenient to use.

Description

Graphite mould

Technical Field

The utility model belongs to the technical field of the technique of mould and specifically relates to a graphite mold is related to.

Background

In recent years, the mold industry is rapidly developed, graphite materials, new processes and increasing mold factories continuously impact the mold market, and graphite is gradually the first choice material for mold manufacturing due to good physical and chemical properties of graphite. The graphite mold has: 1. excellent heat conduction and electric conduction performance; 2. low linear expansion coefficient and the like, good thermal stability and heating impact resistance; 3. chemical corrosion resistance and most metals are not easy to react; 4. strength increases with increasing temperature at high temperatures (above 800 ℃ for most copper-based matrix sintering temperatures); 5. the lubricating oil has good lubrication and abrasion resistance; 6. easy processing, good machining performance, and can be made into a mold with complex shape and high precision.

The existing referenceable authorization bulletin numbers are: chinese utility model patent of CN201529757U, it discloses a horizontal continuous casting graphite crystallizer, including overcoat, the plug of trailing end connection on the overcoat, be equipped with annular channel between plug and the overcoat, be provided with inlet, its characterized in that on the lateral wall of the junction of overcoat and annular channel: the liquid inlet and the inner wall of the jacket are in a vertical tangent shape. The liquid inlet is uniformly arranged on the side wall of the outer sleeve, which is 8-12mm away from the die holder, and the pressure difference between the inside and the outside of the channel is utilized to generate shearing force and centripetal force, so that the crystal grains in the molten metal flow and rotate on the same ingot casting surface in the same direction, the internal structure is uniform, the crystal grains are refined, the service life of the die is prolonged, and the production efficiency is improved. Meanwhile, the problems that the equipment investment is large, the electric energy consumption is high, the operation is difficult and the batch production cannot be realized due to the adoption of a new process are solved.

The graphite core and the graphite outer sleeve of the horizontal continuous casting graphite crystallizer are assembled into a whole by the graphite pin, so that the horizontal continuous casting graphite crystallizer is difficult to disassemble and low in interchangeability, and when copper liquid is adhered to the annular channel or is broken by the copper pipe and is difficult to clean, the use is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a graphite mold has the loading and unloading convenience, convenient to use's advantage.

The above object of the present invention is achieved by the following technical solutions:

a graphite die comprises a columnar die holder, a ring sleeve and a core rod, wherein an insert ring is arranged on one side of the die holder, an internal thread is arranged at a position where the insert ring can abut against the outer side of the ring sleeve, an external thread matched with the internal thread is fixedly arranged at one end of the outer side of the ring sleeve, the core rod is arranged in the ring sleeve, an annular channel is formed between the core rod and the ring sleeve, and one end of the core rod is connected with the die holder through a bolt; the ring sleeve comprises two half rings which are spliced with each other, and a connecting structure is arranged between the splicing surfaces of the two half rings.

Through adopting above-mentioned technical scheme, when the mould was dismantled to needs, directly rotate the die holder and can dismantle the ring cover from the die holder, then through connection structure, dismantle two annulars, the impurity between clearance ring cover and the plug that can relax, convenient to use, easy operation.

The utility model discloses further set up to: the connecting structure comprises dovetail grooves which are arranged on two splicing surfaces of one half ring along the length direction of the half ring, and dovetail strips which are arranged on two splicing surfaces of the other half ring are arranged, and the dovetail strips are connected to the dovetail grooves in a sliding mode.

By adopting the technical scheme, the two half rings can be conveniently spliced, and the device is convenient to use and simple to operate.

The utility model discloses further set up to: the die holder is characterized in that a plurality of positioning holes are formed in the peripheral surface of one end, inserted in the inserting ring, of the ring sleeve, and a plurality of positioning bolts with end portions capable of being inserted in the positioning holes are in threaded connection with the peripheral surface of the die holder.

Through the positioning bolt, the relative positions of the die holder and the ring sleeve can be further fixed, so that the die holder and the ring sleeve are firmly connected.

The utility model discloses further set up to: the middle of the die holder is provided with an insertion hole, the core rod is inserted into the insertion hole, the peripheral surface of one end of the core rod inserted into the insertion hole is provided with a limiting hole, and the peripheral surface of the die holder is in threaded connection with a limiting bolt of which the end part is inserted into the limiting hole.

Through adopting above-mentioned technical scheme, can realize the firm fixed of plug and die holder through the spacing bolt that adopts, and dismantle the convenience.

The utility model discloses further set up to: one end of the ring sleeve, which is close to the die holder, is provided with a plurality of liquid inlets communicated with the annular channel, and the liquid inlets and the ring sleeve are in a vertical tangent shape.

By adopting the technical scheme, the liquid inlet is uniformly arranged at the position, close to the side wall of the die holder, of the ring sleeve, and the shearing force and the centripetal force are generated by utilizing the pressure difference between the inside and the outside of the annular channel, so that the crystal grains in the molten metal flow and rotate on the same ingot casting surface in the same direction, the internal organization is uniform, the crystal grains are refined, the service life of the die is prolonged, and the production efficiency is improved.

The utility model discloses further setting up to: the liquid inlet is arranged at the position 8-12mm away from the die holder on the outer side of the ring sleeve.

The utility model discloses further set up to: the core rod is of a conical structure with the diameter decreasing from the die holder to the end far away from the die holder.

By adopting the technical scheme: the core rod is of a conical structure, so that the copper pipe can be conveniently demoulded, and the copper pipe demoulding device is convenient to use.

The utility model discloses further set up to: one end of the core rod, which is far away from the die holder, extends out of the end part of the ring sleeve and is not less than 55 mm.

By adopting the technical scheme, the core rod is extended out of the ring sleeve, so that the traction speed can be greatly increased, the size of the inner hole of the copper pipe can be ensured, and the production cost is reduced.

To sum up, the utility model discloses a beneficial technological effect does:

1. when the die needs to be disassembled, the ring sleeve can be disassembled from the die holder by directly rotating the die holder, and then the two half rings are disassembled through the connecting structure, so that impurities between the ring sleeve and the core rod can be easily removed, the use is convenient, and the operation is simple;

2. the core rod and the die holder can be firmly fixed through the adopted limiting bolt, and the core rod and the die holder are convenient to disassemble;

3. the liquid inlet is uniformly arranged on the side wall of the ring sleeve close to the die holder, and generates shearing force and centripetal force by utilizing the pressure difference between the inside and the outside of the annular channel, so that crystal grains in molten metal flow and rotate on the same ingot casting surface in the same direction, the internal organization is uniform, the crystal grains are refined, the service life of the die is prolonged, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic sectional view of the overall structure of the present invention.

Fig. 2 is an explosion diagram of the overall structure of the present invention.

FIG. 3 is a schematic view of the structure of the liquid inlet of the present invention.

In the figure, 1, a die holder; 11. inserting a ring; 12. an internal thread; 13. positioning the bolt; 14. a jack; 15. a limit bolt; 2. sleeving a ring; 21. an external thread; 22. positioning holes; 23. a half ring; 231. a dovetail groove; 232. a dovetail strip; 24. a liquid inlet; 3. a core rod; 31. a limiting hole; 4. an annular channel.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the graphite mold of the present invention comprises a mold base 1, a ring sleeve 2 and a core rod 3.

Referring to fig. 2 and 3, the die holder 1 is shaped like a flat cylinder, one side of the die holder 1 is provided with an insert ring 11 coaxial with the die holder 1, the diameter of the insert ring 11 is the same as that of the ring sleeve 2, the outer side of the insert ring 11 is provided with an internal thread 12, the outer wall of one end of the ring sleeve 2 is further fixedly provided with an external thread 21, one end of the ring sleeve 2 can be inserted into the insert ring 11 by the mutual matching of the external thread 21 and the internal thread 12, and the connection between the die holder 1 and the ring sleeve 2 is completed. A positioning hole 22 is further formed in the outer peripheral surface of one end, inserted in the insert ring 11, of the ring sleeve 2, and a positioning bolt 13, one end of which can be inserted in the positioning hole 22, is further in threaded connection with the outer peripheral surface of the die holder 1. The ring sleeve 2 comprises two half rings 23 which can be spliced into a whole ring, a splicing structure is arranged between splicing surfaces of the two half rings 23, the splicing structure comprises a dovetail groove 231 which is formed in the two splicing surfaces of one half ring 23 along the length direction of the half ring 23 and a dovetail strip 232 which is formed in the two splicing surfaces of the other half ring 23 along the length direction of the half ring 23, and the dovetail strip 232 can be connected in the dovetail groove 231 in a sliding mode, so that the tubular ring sleeve 2 is formed. When the die needs to be disassembled, the positioning bolt 13 is rotated to enable the end part of the positioning bolt 13 to be separated from the positioning hole 22 of the ring sleeve 2, then the die holder 1 or the ring sleeve 2 is rotated to realize the separation of the die holder 1 and the ring sleeve 2, and then the ring sleeve 2 is divided into two semi-rings 23 through the mutual sliding of the two ring sleeves 2, so that the impurities between the ring sleeve 2 and the core rod 3 can be conveniently cleaned.

The middle part of the die holder 1 is provided with a jack 14 coaxial with the die holder 1, one end of the core rod 3 is inserted into the jack 14, the peripheral surface of one end of the core rod 3 inserted into the jack 14 is provided with a limiting hole 31, and the peripheral surface of the die holder 1 is further in threaded connection with a limiting bolt 15 of which the end part can be inserted into the limiting hole 31. When the die holder 1 and the core rod 3 need to be disassembled, the limiting bolt 15 is rotated, so that the end part of the limiting bolt 15 is separated from the limiting hole 31 of the core rod 3, and then the separation of the core rod 3 and the die holder 1 can be completed.

Referring to fig. 1 and 3, an annular channel 4 for forming a copper pipe is formed between the core rod 3 and the ring sleeve 2, a plurality of liquid inlets 24 capable of being communicated with the annular channel 4 are uniformly formed in the position 18-12mm away from the die holder on the peripheral surface of the outer side of the ring sleeve 2, and the liquid inlets 24 and the ring sleeve 2 are in a vertical tangent shape. One end of the core rod 3, which is far away from the die holder 1, extends out of the end part 55mm of the ring sleeve 2, and the core rod 3 is in a conical structure with the diameter decreasing from the die holder 1 to the end far away from the die holder 1. The liquid inlet 24 is uniformly arranged at the side wall of the ring sleeve 2, which is close to the die holder by 18-12mm, and utilizes the pressure difference between the inside and the outside of the annular channel 4 to generate shearing force and centripetal force, so that crystal grains in molten metal flow and rotate on the same ingot casting surface in the same direction, the internal organization is uniform, the crystal grains are refined, the adopted core rod 3 is of a conical structure, the demoulding of the copper pipe can be facilitated, in addition, the adopted core rod 3 extends out of the ring sleeve 2, the traction speed can be greatly increased, and the size of an inner hole of the copper pipe can be ensured.

The implementation principle of the embodiment is as follows: when the die needs to be disassembled, the positioning bolt 13 is rotated to enable the end part of the positioning bolt 13 to be separated from the positioning hole 22 of the ring sleeve 2, then the die holder 1 or the ring sleeve 2 is rotated to realize the separation of the die holder 1 and the ring sleeve 2, and then the ring sleeve 2 is divided into two semi-rings 23 through the mutual sliding of the two ring sleeves 2, so that impurities between the ring sleeve 2 and the core rod 3 can be conveniently cleaned; when the die holder 1 and the core rod 3 need to be disassembled, the limiting bolt 15 is rotated, so that the end part of the limiting bolt 15 is separated from the limiting hole 31 of the core rod 3, and then the separation of the core rod 3 and the die holder 1 can be completed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A graphite mold is characterized in that: the die comprises a columnar die holder (1), a ring sleeve (2) and a core rod (3), wherein an insert ring (11) is arranged on one side of the die holder (1), an internal thread (12) is arranged at the position, capable of being abutted against the outer side of the ring sleeve (2), of the insert ring (11), an external thread (21) matched with the internal thread (12) is fixedly arranged at one end of the outer side of the ring sleeve (2), the core rod (3) is arranged in the ring sleeve (2), an annular channel (4) is formed between the core rod (3) and the ring sleeve (2), and one end of the core rod (3) is connected to the die holder (1) through a bolt; the ring sleeve (2) comprises two half rings (23) which are spliced with each other, and a connecting structure is arranged between the splicing surfaces of the two half rings (23).

2. A graphite mold according to claim 1, wherein: the connecting structure comprises dovetail grooves (231) which are arranged on two splicing surfaces of one half ring (23) along the length direction of the half ring (23) and dovetail strips (232) which are arranged on two splicing surfaces of the other half ring (23), and the dovetail strips (232) are connected to the dovetail grooves (231) in a sliding mode.

3. A graphite mold according to claim 1, wherein: the ring sleeve (2) is inserted into the peripheral surface of one end of the inserting ring (11) and provided with a plurality of positioning holes (22), and the peripheral surface of the die holder (1) is in threaded connection with a plurality of positioning bolts (13) with ends capable of being inserted into the positioning holes (22).

4. A graphite mold according to claim 1, wherein: the middle part of the die holder (1) is provided with an insertion hole (14), the core rod (3) is inserted into the insertion hole (14), a limiting hole (31) is formed in the peripheral surface of one end, inserted into the insertion hole (14), of the core rod (3), and the peripheral surface of the die holder (1) is in threaded connection with a limiting bolt (15) of which the end part is inserted into the limiting hole (31).

5. A graphite mold according to claim 1, wherein: one end of the ring sleeve (2) close to the die holder (1) is provided with a plurality of liquid inlets (24) communicated with the annular channel (4), and the liquid inlets (24) and the ring sleeve (2) are in a vertical tangent shape.

6. A graphite mold according to claim 5, wherein: the liquid inlet (24) is arranged at the position 8-12mm away from the die holder (1) on the outer side of the ring sleeve (2).

7. A graphite mold according to claim 1, wherein: the core rod (3) is of a conical structure with the diameter decreasing from the die holder (1) to the end far away from the die holder (1).

8. A graphite mold according to claim 1, wherein: one end of the core rod (3) far away from the die holder (1) extends out of the end part of the ring sleeve (2) and is not less than 55 mm.