CN219121054U - Fixing clamp for graphite crucible - Google Patents

Abstract

The utility model provides a fixing clamp for a graphite crucible, which aims to solve the problem of poor compatibility of the existing fixing clamp. The fixing clamp comprises a supporting seat which is of a cylindrical hollow structure, an upper self-adaptive clamping device and a lower self-adaptive clamping device are adjustably arranged inside the supporting seat, and the upper self-adaptive clamping device and the lower self-adaptive clamping device are annular and are identical in structure. The distance between the upper adaptive clamping device and the lower adaptive clamping device can be freely adjusted on the supporting seat so as to adapt to graphite crucibles with different heights; the upper adaptive clamping device or the lower adaptive clamping device can freely adjust the opening distance according to the outer contour of the graphite crucible so as to adapt to the graphite crucibles with different calibers.

Description

Fixing clamp for graphite crucible

Technical Field

The utility model belongs to the technical field of graphite crucible clamps, and particularly relates to a fixing clamp for a graphite crucible.

Background

The graphite crucible is processed by taking natural crystalline flake graphite as a main raw material and taking plastic refractory clay or carbon as a binder, and has the characteristics of high temperature resistance, strong heat conduction performance, good corrosion resistance, long service life and the like. The inner wall of the graphite crucible is smooth, and molten metal liquid is not easy to leak or adhere to the inner wall of the crucible, so that the metal liquid has good fluidity and casting property, is suitable for casting and forming of various different moulds, and is widely used for alloy tool steel smelting and nonferrous metal and alloy smelting.

The graphite crucible is generally filled with molten metal, and is suitable for casting of different dies. The sizes of the molds are different, so that the capacity of the molten metal required in casting is also different, and the molten metal needs to be poured into the molds all at once to ensure the casting quality of the molds, so that the sizes of the graphite crucibles are customized according to the sizes of the molds. After the graphite crucible is molded, trimming, drilling, polishing and the like are required to be carried out on the graphite crucible. The most important procedure is to position and clamp the graphite crucible during the treatment process so as to prevent the graphite crucible from shifting during the treatment process.

Since the size of the graphite crucible is often customized according to the size of the mold, there is a difference in the size of each batch of graphite crucible. The graphite crucibles of different batches need to be subjected to trimming, drilling, polishing and other working procedures at the same station, so that fixing fixtures of different types are prepared, and the graphite crucibles of different batches are suitable. Since different types of fixing jigs are prepared according to the graphite crucible, production and development costs are increased.

In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.

Disclosure of Invention

Aiming at the defects pointed out in the background art, the utility model aims to provide a fixing clamp for a graphite crucible, so as to solve the problem of poor compatibility of the existing fixing clamp.

In order to achieve the above object, the technical scheme of the present utility model is as follows:

the utility model provides a mounting fixture for graphite crucible, is including being cylindricality hollow structure's supporting seat, inside adjustable upper position self-adaptation clamping device and the lower extreme self-adaptation clamping device of installing of supporting seat, upper position self-adaptation clamping device and lower extreme self-adaptation clamping device are annular and the structure is unanimous.

As a preferable technical scheme, the upper self-adaptive clamping device comprises a mounting ring, the outer diameter of the mounting ring is matched with the inner diameter of the supporting seat, three groups of guide seats distributed circumferentially are arranged on the outer circumferential surface of the mounting ring, guide holes communicated with the inner circumferential surface of the mounting ring are formed in the end surface of the guide seat, and a clamping mechanism is installed in the guide holes in a sliding mode.

As a preferred technical scheme, clamping mechanism includes the guide post that slides in the guiding hole and overcoat has the spring, the guide post front end extends to the collar inboard and articulates there is the backplate, the terminal surface is equipped with the rubber pad before the backplate, guide post body middle part is equipped with round chimb, guide post rear end spiro union has the end seat, spring one end and guide holder fixed connection, the spring other end and chimb fixed connection.

As a preferable technical scheme, the front end face of the rubber pad is provided with a plurality of groups of anti-skid grooves.

As a preferable technical scheme, the outer peripheral surface of the mounting ring is also provided with three groups of support frames which are distributed circumferentially for the guide post to pass through, the end face of each support frame is provided with a through hole which is opposite to the guide hole, one end of the spring is in contact with and props against the convex edge, and the other end of the spring is in contact with and props against the support frame.

As a preferable technical scheme, the supporting seat comprises an upper ring sleeve and a lower ring sleeve, the upper ring sleeve is connected with the lower ring sleeve through a plurality of groups of circumferentially distributed supporting columns, a flange plate is arranged on the lower end face of the lower ring sleeve, and a plurality of groups of circumferentially distributed mounting holes are formed in the flange plate.

As an preferable technical scheme, the upper adaptive clamping device or the lower adaptive clamping device is connected and installed with the supporting seat through a plurality of groups of locking plates.

As a preferable technical scheme, the outer terminal surface of upper position self-adaptation clamping device or lower position self-adaptation clamping device all is equipped with the spacing hole of circumference distribution, the support column is equipped with a plurality of sets of locating holes that distribute perpendicularly, locking plate one side is equipped with the round pin post, passes through the round pin post of locating hole and spacing hole in proper order through the locking plate and realizes upper position self-adaptation clamping device or lower position self-adaptation clamping device and supporting seat connection installation.

After the technical scheme is adopted, the utility model has the beneficial effects that:

the distance between the upper adaptive clamping device and the lower adaptive clamping device can be freely adjusted on the supporting seat so as to adapt to graphite crucibles with different heights; the upper adaptive clamping device or the lower adaptive clamping device can freely adjust the opening distance according to the outer contour of the graphite crucible, so that the graphite crucible is suitable for graphite crucibles with different calibers.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic structural view of a fixing jig.

Fig. 2 is a schematic structural view of the upper adaptive clamping device.

Fig. 3 is a schematic structural view of the support base.

In the figure: 1. the self-adaptive clamping device comprises an upper self-adaptive clamping device 11, a mounting ring 111, a guide seat 112, a guide hole 113, a limit hole 12, a support frame 121, a through hole 13, a back plate 14, a rubber pad 141, an anti-slip groove 15, a guide post 151, an end seat 152, a convex edge 16, a spring 2, a lower self-adaptive clamping device 3, a support seat 31, an upper ring sleeve 32, a support column 321, a positioning hole 33, a lower ring sleeve 331, a flange plate 332, a mounting hole 34, a locking plate 341 and a pin.

Detailed Description

Features and exemplary embodiments of various aspects of the present utility model will be described in detail below, and in order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the utility model and are not configured to limit the utility model. It will be apparent to one skilled in the art that the present utility model may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the utility model by showing examples of the utility model.

The directional terms appearing in the following description are those directions shown in the drawings and do not limit the specific structure of the utility model. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

The utility model aims to provide a fixing clamp for a graphite crucible, which aims to solve the problem of poor compatibility of the existing fixing clamp. The fixing clamp comprises a supporting seat 3 which is of a cylindrical hollow structure, an upper self-adaptive clamping device 1 and a lower self-adaptive clamping device 2 are adjustably arranged in the supporting seat 3, and the upper self-adaptive clamping device 1 and the lower self-adaptive clamping device 2 are annular and are identical in structure. The distance between the upper adaptive clamping device 1 and the lower adaptive clamping device 2 can be freely adjusted 3 on the supporting seat so as to adapt to graphite crucibles with different heights. Meanwhile, the upper adaptive clamping device 1 or the lower adaptive clamping device 2 can freely adjust the opening distance according to the outer contour of the graphite crucible, so that the graphite crucible is suitable for graphite crucibles with different calibers. The utility model is mainly used for being compatible with graphite crucibles with different sizes, can restrict the degrees of freedom of X and Y axes of the graphite crucible, and also needs to drive a pressing device (not shown) by a cylinder in order to realize the restriction of Z axis. The graphite crucible is pressed in the fixed clamp through the pressing device, so that the graphite crucible is comprehensively positioned and clamped.

As shown in fig. 3, the support seat 3 in the fixing clamp is of an integrally formed aluminum alloy structure, and comprises an upper ring sleeve 31 and a lower ring sleeve 33 with the same caliber, wherein the upper ring sleeve 31 is connected with the lower ring sleeve 33 through a plurality of groups of support columns 32 distributed circumferentially. For convenient installation of the fixing clamp, the lower end face of the lower ring sleeve 33 is provided with an integrally formed flange 331, and the flange 331 is provided with a plurality of groups of circumferentially distributed mounting holes 332. Through ring flange 331, can wholly fix mounting fixture on table surface, strengthen the holistic stability of device.

In the embodiment, the upper adaptive clamping device 1 and the lower adaptive clamping device 2 are completely identical in structure, and the upper adaptive clamping device 1 is taken as an example. As shown in fig. 2, the upper adaptive clamping device 1 includes a mounting ring 11 made of metal, and an outer diameter of the mounting ring 11 is matched with an inner diameter of the supporting seat 3. Three groups of guide seats 111 which are uniformly distributed in the circumferential direction are arranged on the outer circumferential surface of the mounting ring 11, guide holes 112 which are communicated with the inner circumferential surface of the mounting ring 11 are formed in the end surface of each guide seat 111, and a clamping mechanism is slidably arranged in each guide hole 112. Three groups of clamping mechanisms in the upper self-adaptive clamping device 1 clamp the graphite crucible by utilizing the principle of triangular stability, and the structure is simple and the cavity is stable. The three groups of clamping mechanisms form a clamping ring with a variable opening distance so as to be freely adjusted according to the outer contour of the graphite crucible, thereby being suitable for the graphite crucibles with different calibers.

As shown in fig. 2, each clamping mechanism includes a guide post 15 slidably mounted in a guide hole 112 and sleeved with a spring 16, and the front end of the guide post 15 extends to the inside of the mounting ring 11 and is hinged with a back plate 13. The hinged back plate 13 is used to accommodate graphite crucibles of different conicity in order to better follow the contours of the graphite crucible. In order to enhance the friction force with the graphite crucible, the front end face of the back plate 13 is provided with a rubber pad 14, and the front end face of the rubber pad 14 is provided with a plurality of groups of anti-skid grooves 141. The rubber pad 14 not only enhances the friction force between the graphite crucible, but also protects the graphite crucible and prevents the outer wall of the graphite crucible from being scratched by the backboard 13. The middle part of the rod body of the guide post 15 is provided with a circle of convex edges 152, and the rear end of the guide post 15 is connected with a detachable end seat 151 in a threaded manner.

As an installation mode, one end of the spring 16 is fixedly connected with the guide seat 111, and the other end of the spring 16 is fixedly connected with the convex edge 152. When placed in the graphite crucible, the graphite crucible expands the guide post 15 and pushes it to slide outward, and the spring 16 is elongated as a tension spring. At the same time, the spring 16 has a reverse force to pull the guide post 15 against the graphite crucible, thereby clamping the graphite crucible.

As shown in fig. 2, as another installation mode, the outer peripheral surface of the installation ring 11 is further provided with three groups of support frames 12 which are circumferentially distributed for the guide posts 15 to pass through, and the support frames 12 can support the guide posts 15, so that the stability of the structure is enhanced. The end face of each support frame 12 is provided with a through hole 121 opposite to the guide hole 112, one end of the spring 16 is propped against the guide post 15, and the other end of the spring 16 is propped against the support frame 12. When placed in the graphite crucible, the graphite crucible expands the guide post 15 and pushes it to slide outward, the spring 16 being compressed at this time. At the same time, the spring 16 has a reverse force to push the guide post 15 against the graphite crucible, thereby clamping the graphite crucible.

As shown in fig. 1 and 3, the upper adaptive clamping device 1 or the lower adaptive clamping device 2 is mounted in connection with the support base 3 through a plurality of sets of locking plates 34. The mounting ring 11 is provided with a plurality of groups of limiting holes 113 which are uniformly distributed in the circumferential direction, each supporting column 32 is provided with a plurality of groups of positioning holes 321 which are vertically distributed, and each group of limiting holes 113 or positioning holes 321 is provided with one group. Two long pins 341 are arranged on one side of the locking plate 34, and the locking plate 34 sequentially passes through the positioning holes 321 and the pins 341 of the limiting holes 113 to realize the connection and installation of the upper adaptive clamping device 1 or the lower adaptive clamping device 2 and the supporting seat 3.

When the self-adaptive clamping device is used, the distance between the upper self-adaptive clamping device 1 and the lower self-adaptive clamping device 2 is adjusted according to the height of the target graphite crucible, and then the self-adaptive clamping device is locked and positioned through the locking plate 34. The upper adaptive clamping device 1 and the lower adaptive clamping device 2 are completely identical in structure, and the upper adaptive clamping device 1 is taken as an example here. When the graphite crucible is put into the graphite crucible, the three groups of guide posts 15 are simultaneously spread and push the guide posts 15 to slide outwards, in the process, the back plate 13 hinged at the front end of the guide posts 15 is gradually attached to the outer contour of the graphite crucible, the spring 16 is compressed along with the extension of the graphite crucible, and meanwhile, the spring 16 has a reverse acting force to push the guide posts 15 to abut against the graphite crucible, so that the graphite crucible is clamped.

In accordance with the above embodiments of the utility model, these embodiments are not exhaustive of all details, nor are they intended to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model and various modifications as are suited to the particular use contemplated. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. A mounting fixture for graphite crucible, its characterized in that: including being cylindricality hollow structure's supporting seat (3), upper position self-adaptation clamping device (1) and lower extreme self-adaptation clamping device (2) are installed to inside adjustable of supporting seat (3), upper position self-adaptation clamping device (1) and lower extreme self-adaptation clamping device (2) are annular and the structure is unanimous.

2. The fixture for a graphite crucible as set forth in claim 1, wherein: the upper self-adaptive clamping device (1) comprises a mounting ring (11), the outer diameter of the mounting ring (11) is matched with the inner diameter of the supporting seat (3), three groups of guide seats (111) which are circumferentially distributed are arranged on the outer circumferential surface of the mounting ring (11), guide holes (112) which are communicated with the inner circumferential surface of the mounting ring (11) are formed in the end surface of the guide seat (111), and a clamping mechanism is mounted in the guide holes (112) in a sliding mode.

3. The fixture for a graphite crucible as set forth in claim 2, wherein: the clamping mechanism comprises a guide post (15) which is slidably mounted in a guide hole (112) and sleeved with a spring (16), the front end of the guide post (15) extends to the inner side of a mounting ring (11) and is hinged with a back plate (13), a rubber pad (14) is arranged on the front end face of the back plate (13), a circle of convex edge (152) is arranged in the middle of a rod body of the guide post (15), an end seat (151) is screwed at the rear end of the guide post (15), one end of the spring (16) is fixedly connected with the guide seat (111), and the other end of the spring (16) is fixedly connected with the convex edge (152).

4. A fixing jig for a graphite crucible as set forth in claim 3, wherein: the front end face of the rubber pad (14) is provided with a plurality of groups of anti-skid grooves (141).

5. A fixing jig for a graphite crucible as set forth in claim 3, wherein: the mounting ring (11) is characterized in that three groups of support frames (12) which are circumferentially distributed for the guide posts (15) to pass through are further arranged on the outer peripheral surface of the mounting ring, through holes (121) which are opposite to the guide holes (112) are formed in the end face of each support frame (12), one end of each spring (16) is in contact with the convex edge (152), and the other end of each spring (16) is in contact with the support frame (12).

6. The fixture for a graphite crucible as set forth in claim 1, wherein: the supporting seat (3) comprises an upper ring sleeve (31) and a lower ring sleeve (33), the upper ring sleeve (31) is connected with the lower ring sleeve (33) through a plurality of groups of circumferentially distributed supporting columns (32), a flange plate (331) is arranged on the lower end face of the lower ring sleeve (33), and a plurality of groups of circumferentially distributed mounting holes (332) are formed in the flange plate (331).

7. The fixture for a graphite crucible as recited in claim 6, wherein: the upper adaptive clamping device (1) or the lower adaptive clamping device (2) is connected and installed with the supporting seat (3) through a plurality of groups of locking plates (34).

8. The fixture for a graphite crucible as recited in claim 7, wherein: the upper adaptive clamping device (1) or the lower adaptive clamping device (2) are respectively provided with a limiting hole (113) which is distributed circumferentially on the outer end face, the support column (32) is provided with a plurality of groups of positioning holes (321) which are distributed vertically, one side of the locking plate (34) is provided with a pin (341), and the upper adaptive clamping device (1) or the lower adaptive clamping device (2) is connected with the supporting seat (3) through the pin (341) which sequentially passes through the positioning holes (321) and the limiting holes (113) of the locking plate (34).

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