CN217020837U - Circumferential isostatic pressing device for ceramic tube - Google Patents

Abstract

The embodiment of the utility model relates to the technical field of ceramic tubes, in particular to a circumferential isostatic pressing device for a ceramic tube, which comprises a fixed female die, a floating male die capable of axially extruding along the fixed female die and an inner die core arranged in the fixed female die, wherein the inner die core is detachably fixed in the fixed female die through a connecting mechanism. The beneficial effects of the utility model are as follows: when in actual use, interior mold core accessible coupling mechanism pulls down from the inside of fixed bed die, and pressure transmission medium holds and puts in the inside of first cavity, when pulling down interior mold core from fixed bed die, blocks pressure transmission medium through first mould pressing component to make pressure transmission medium not influence interior mold core and normally pull down from the inside of fixed bed die, and interior mold core is in being convenient for will waiting to press the material to add in the interior mold core after pulling down from the inside of fixed bed die.

Description

Circumferential isostatic pressing device for ceramic tube

Technical Field

The utility model relates to the technical field of ceramic tubes, in particular to a ceramic tube forming device.

Background

The hot-pressing injection molding is a molding process widely applied in the production of special ceramics, and the basic principle is that by utilizing the characteristics of melting paraffin wax by heating and solidifying in case of condensation, non-plastic barren ceramic powder and hot paraffin wax liquid are uniformly mixed to form flowable slurry, the slurry is injected into a metal mold under a certain pressure for molding, and after the slurry is cooled and solidified, the molded blank body is taken out by demolding. The blank is properly trimmed, embedded into an adsorbent and heated for dewaxing treatment, and then the dewaxed blank is sintered into a final product. The hot-pressing injection process has the main advantages of forming ceramic products with complex shapes, high dimensional precision, almost no need of subsequent processing and one-step forming. The hot-pressing injection process has the defects of high porosity, relatively more internal defects, lower density, relatively poorer mechanical property and performance stability of the product, need of a dewaxing link, and increase of energy consumption and production time. Because of the limitation of dewaxing, thick-wall products are difficult to prepare, large-size ceramic products are not suitable to prepare, and the dewaxing process can cause serious environmental pollution. For the ceramic corrugated pipe of the vacuum switch of the sealed ceramic device with strict requirements on volume density, air tightness, breaking strength and the like, the hot-pressing injection process is not high in reliability. The common isostatic pressing method needs expensive equipment, and the formed rough blank can reach the required size only by turning;

therefore, the ceramic tube circumferential isostatic pressing device which has few processing procedures and can be formed at one time is generally adopted for production, but the following problems exist in practical use:

a pressure transfer medium (usually pulvis Talci and other powdery materials) is arranged inside the fixed female die, and because the pressure transfer medium has a certain flowing shape, the inner die core is difficult to take out from the inside of the fixed female die, and the material to be pressed is inconvenient to be added into the inner die core;

after the pressure transmission medium is extruded, the pressure transmission medium is easy to agglomerate in the fixed female die, and the agglomerated pressure transmission medium is inconvenient to uniformly transmit pressure in the next extrusion work.

Therefore, there is a need for a circumferential isostatic pressing apparatus for ceramic tubes to overcome the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, embodiments of the present invention provide a circumferential isostatic pressing apparatus for a ceramic tube, which achieves the purpose of solving the problems in the background art.

In order to achieve the above purpose, the embodiments of the present invention specifically adopt the following technical solutions: the utility model provides a ceramic pipe circumference isostatic compaction device for will wait to press material extrusion, including fixed bed die, can follow fixed bed die axial and carry out extruded unsteady formpiston, set up the inner mold core in fixed bed die is inside, the inner mold core passes through coupling mechanism detachable to be fixed in the inside of fixed bed die, the first mould pressing component of the inside fixedly connected with of fixed bed die, first mould pressing component is first cavity and second cavity with the internal partitioning of fixed bed die, the inside of first cavity is provided with and supplies the unsteady formpiston to carry out extruded pressure transmission medium, the inner mold core is located the inside of second cavity.

As a further improvement of the above technical solution:

the inner mold core comprises an I-shaped mold core main body, a second molding member arranged outside the mold core main body, and a cavity formed between the mold core main body and the second molding member and used for containing materials to be molded.

The mold core main body comprises a first mold core part, a second mold core part and a handle groove, wherein the second mold core part is fixedly connected to the top of the first mold core part in a threaded manner, and the handle groove is formed in the top of the second mold core part.

The connecting mechanism comprises a clamping groove formed in the fixed female die, and a clamping block which is fixedly connected to the bottom of the first die core part and can be clamped in the clamping groove.

And a vibration motor for vibrating pressure transmission media is arranged on the side part of the fixed female die.

The embodiment of the utility model has the beneficial effects that:

1. when the inner mold core is detached from the fixed female mold, the pressure transmission medium is blocked by the first mold pressing member, so that the pressure transmission medium does not influence the normal detachment of the inner mold core from the fixed female mold, and the material to be pressed is conveniently added into the inner mold core after the inner mold core is detached from the fixed female mold;

2. after extrusion work is completed, the inner mold core is taken out from the inside of the fixed female mold, and then the vibration motor is started, so that the vibration motor can vibrate pressure transmission media, and the pressure transmission media after agglomeration are prevented from influencing pressure uniform transmission.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of the present invention at the position of the female stationary mold;

fig. 4 is a schematic sectional view at the female stationary mold of the present invention;

FIG. 5 is a schematic structural view of the inner core of the present invention.

In the figure: 1. fixing the female die; 2. a floating male die; 3. an inner mold core; 31. a mold core main body; 32. a second molded member; 33. a cavity; 311. a first die core portion; 312. a second die core portion; 313. a handle slot; 4. a connecting mechanism; 41. a card slot; 42. a clamping block; 5. a first molded member; 6. a first cavity; 7. a second cavity; 8. a pressure transmission medium; 9. a vibration motor.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Referring to fig. 1 to 5, the embodiment of the utility model discloses a circumferential isostatic pressing device for a ceramic tube, which comprises a fixed female die 1, a floating male die 2 capable of extruding along the axial direction of the fixed female die 1, and an inner die core 3 arranged inside the fixed female die 1, wherein the inner die core 3 is detachably fixed inside the fixed female die 1 through a connecting mechanism 4, the fixed female die 1 is fixedly connected with a first pressing member 5, the first pressing member 5 is made of rubber, the first pressing member 5 divides the inside of the fixed female die 1 into a first cavity 6 and a second cavity 7, a pressure transmission medium 8 for extruding the floating male die 2 is arranged inside the first cavity 6, and the inner die core 3 is positioned inside the second cavity 7;

in practical use, the inner mold core 3 can be detached from the inside of the fixed female mold 1 through the connecting mechanism 4, the pressure transmission medium 8 is contained in the first cavity 6, when the inner mold core 3 is detached from the fixed female mold 1, the pressure transmission medium 8 is blocked through the first molding member 5, so that the pressure transmission medium 8 does not influence the normal detachment of the inner mold core 3 from the inside of the fixed female mold 1, and the inner mold core 3 is convenient for adding a material to be pressed into the inner mold core 3 after being detached from the inside of the fixed female mold 1.

As further illustration of the present application: the inner mold core 3 comprises an I-shaped mold core main body 31, a second molding member 32 arranged outside the mold core main body 31, and a containing cavity 33 formed between the mold core main body 31 and the second molding member 32 and used for containing a material to be pressed, wherein the second molding member 32 is made of rubber, and the material to be pressed is placed in the containing cavity 33 for extrusion.

As further illustration of the present application: the core body 31 includes a first core part 311, a second core part 312 screwed and fixed on the top of the first core part 311, and a handle groove 313 provided on the top of the second core part 312, and the second core part 312 is unscrewed from the first core part 311 through the handle groove 313, so that the material to be pressed is charged into the cavity 33.

As further illustration of the present application: the connecting mechanism 4 includes a clamping groove 41 formed in the fixed female die 1, and a fixture block 42 which is fixedly connected to the bottom of the first die core portion 311 and can be clamped in the clamping groove 41, when the inner die core 3 is fixed inside the fixed female die 1 through the connecting mechanism 4, the fixture block 42 on the inner die core 3 is firstly inserted into the clamping groove 41, and then the inner die core 3 is rotated so that the fixture block 42 is clamped in the clamping groove 41.

As further illustration of the present application: the lateral part of the fixed female die 1 is provided with a vibrating motor 9 for vibrating the pressure transmission medium 8, after extrusion work is completed, the inner die core 3 is taken out from the inside of the fixed female die 1, and then the vibrating motor 9 is started, so that the vibrating motor 9 can vibrate the pressure transmission medium 8, and the pressure transmission medium 8 after agglomeration is prevented from influencing pressure to be uniformly transmitted.

The working principle is as follows: during practical use, a material to be pressed is added into the containing cavity 33 in the inner mold core 3, then the inner mold core 3 is installed in the fixed female mold 1, and the pressure transmission medium 8 is extruded by the floating male mold 2 along with the extrusion of the pressure transmission medium 8, so that the material to be pressed is extruded by the pressure transmission medium 8 through the second molding member 32 and the first molding member 5, and therefore circumferential isostatic pressing of the material to be pressed is achieved.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.

Claims (5)

1. The utility model provides a ceramic pipe circumference isostatic compaction device for will wait to press material extrusion, including fixed bed die (1), can follow fixed bed die (1) axial and carry out extruded unsteady formpiston (2), set up at inside inner mold core (3) of fixed bed die (1), a serial communication port, inner mold core (3) are fixed in the inside of fixed bed die (1) through coupling mechanism (4) detachable, the inside fixedly connected with first mould pressing member (5) of fixed bed die (1), first mould pressing member (5) are first cavity (6) and second cavity (7) with the inside partition of fixed bed die (1), the inside of first cavity (6) is provided with supplies unsteady formpiston (2) to carry out extruded pressure transmission medium (8), inner mold core (3) are located the inside of second cavity (7).

2. The circumferential isostatic pressing device for ceramic tubes as claimed in claim 1, wherein said inner core (3) comprises an "i" shaped core body (31), a second pressing member (32) disposed outside the core body (31), and a cavity (33) formed between the core body (31) and the second pressing member (32) for accommodating the material to be pressed.

3. The ceramic tube circumferential isostatic pressing apparatus as claimed in claim 2, wherein said core body (31) comprises a first core portion (311), a second core portion (312) screwed and fixed on top of the first core portion (311), and a handle groove (313) provided on top of the second core portion (312).

4. A circumferential isostatic pressing device for ceramic tubes according to claim 3, wherein said connecting mechanism (4) comprises a slot (41) provided in the stationary female die (1), and a block (42) fixedly connected to the bottom of the first die core portion (311) and capable of being engaged in the slot (41).

5. A circumferential isostatic pressing arrangement for ceramic tubes according to claim 1, characterised in that the stationary female die (1) is provided at its side with a vibration motor (9) for vibrating away the pressure transfer medium (8).

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