CN211888974U - Graphite mold clamping jig - Google Patents

Abstract

The utility model discloses a graphite jig clamping tool includes the spacing portion of loading board, X axle, the spacing portion of Y axle and the spacing portion of Z axle, and the spacing portion of Z axle is equipped with adsorbs the die cavity, adsorbs the die cavity and includes a plurality of absorption through-holes that pass the loading board, the whole main adsorption tanks that adsorb the through-hole of linear intercommunication, a plurality of intercrossing sets up and all the vice adsorption tanks that communicate with main adsorption tank mutually. The X-axis limiting part and the Y-axis limiting part limit the translation of the graphite mold relative to the bearing plate by means of extrusion force; the Z-axis limiting part limits the graphite mold to move along the Z axis by means of adsorption force. The main adsorption groove and the auxiliary adsorption groove are arranged in a crossed manner, so that the vacuum adsorption area of the graphite mold can be increased, the risk of position deviation of the graphite mold due to too low air pressure or unstable air pressure is reduced, and the machining precision is improved; the deformation degree of the graphite mold can be effectively relieved by the arrangement of the main adsorption groove and the auxiliary adsorption groove, and the graphite mold is prevented from being frequently corrected, so that the processing precision and the processing efficiency can be effectively improved.

Description

Graphite mold clamping jig

Technical Field

The utility model relates to a graphite jig clamping technical field, in particular to graphite jig clamping tool.

Background

In view of the advantages of good heat-conducting property, self-lubricating property and the like of the graphite mold, the graphite mold can greatly improve the casting quality of castings, and lays a foundation for the wide application of the graphite mold.

Graphite jig relies on professional clamping tool to fix on the workstation usually when using, and the clamping tool of this type of specialty mainly relies on vacuum adsorption power to fix graphite jig, inject graphite jig and remove for the workstation. The existing clamping jig only depends on a plurality of vacuum adsorption holes penetrating along the thickness direction to adsorb the graphite mold, so that the adsorption area is relatively small, the vacuum adsorption force is too small, and the positioning reliability of the graphite mold is influenced; in addition, when the vacuum adsorption force is too large, the local part of the graphite mold is easy to deform, in order to ensure the processing precision, a large amount of time is consumed in the production process to correct the graphite mold, the invalid working time is prolonged, and the processing efficiency is influenced.

Therefore, how to optimize the existing graphite mold clamping jig to improve the processing efficiency and the processing precision makes the technical problem to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a graphite jig mainly relies on the fixed graphite jig of extrusion force, reduces graphite jig and crosses low or atmospheric pressure unstability because of atmospheric pressure and cause the skew risk in position, can effectively alleviate graphite jig's deformation degree simultaneously, avoids frequently revising graphite jig, so can effectively promote machining precision and machining efficiency.

The specific scheme is as follows:

the utility model provides a graphite mold clamping tool, include:

the bearing plate is used for bearing the graphite mold;

the X-axis limiting part and the Y-axis limiting part are fixedly arranged on the bearing plate and are used for abutting against the opposite sides of the graphite mold so as to correspondingly limit the movement of the graphite mold along the X axis and the Y axis;

the Z-axis limiting part is arranged on the bearing plate and used for absorbing the bottom end of the graphite mold through vacuum adsorption force to limit the graphite mold to move along the Z axis, and an absorption cavity is arranged on the Z-axis limiting part;

the adsorption cavity comprises a plurality of adsorption through holes penetrating through the bearing plate to supply vacuum gas, a main adsorption groove arranged at the center of the bearing plate and communicated with all the adsorption through holes along the linear direction, and a plurality of auxiliary adsorption grooves which are arranged in a cross mode and communicated with the main adsorption groove to uniformly adsorb the graphite mold.

Preferably, the structure of the Y-axis limiting part is the same as that of the X-axis limiting part, and the X-axis limiting part includes:

the fixed limiting blocks and the fixed inclined guide blocks are respectively fixed on the bearing plate and are oppositely arranged on two sides of the graphite mold; the fixed inclined guide block is provided with a guide inclined plane;

the sliding inclined stop block is detachably fixed on the fixed inclined guide block through a fastener; when the fastener is screwed, the sliding inclined stop block slides along the guide inclined plane to the direction close to the graphite mold until the sliding inclined stop block abuts against the graphite mold to cooperate with the fixed limiting block to limit the movement of the graphite mold.

Preferably, the method further comprises the following steps:

the supporting seat is used for supporting the bearing plate;

the limiting assembly is arranged between the supporting seat and the bearing plate and used for limiting the bearing plate to move relative to the supporting seat.

Preferably, the limiting assembly comprises a plurality of groups of limiting holes and limiting columns which are arranged between the supporting seat and the bearing plate and are in nested fit, and the limiting holes and the limiting columns which are all matched with each other are distributed annularly.

Preferably, the limiting columns are at least one group of fixing columns which are distributed diagonally and penetrate through the supporting seat and the bearing plate, the first ends of the fixing columns are sleeved with adjusting nuts, the second ends of the fixing columns are provided with rotating pressing blocks which rotate relative to the fixing columns, the limiting holes are fixing holes which are arranged in the bearing plate and through which the rotating pressing blocks pass in a one-to-one correspondence manner, and the fixing columns are sleeved with adjusting springs of which two ends are respectively abutted against the supporting seat and the adjusting nuts; when the rotating pressing block rotates to abut against the hole edge of the fixing hole, the adjusting nut is rotated to enable the bearing plate to be fixed on the supporting seat by means of elastic force exerted by the pressed adjusting spring.

Preferably, the Z-axis limiting part further includes:

the vacuum pipeline is arranged on one side of the supporting seat and used for providing vacuum negative pressure;

and the air supply cavity is arranged on the supporting seat and is respectively communicated with the vacuum pipeline and the adsorption cavity.

Preferably, the carrying handle is oppositely arranged at two sides of the carrying plate and used for carrying the carrying plate.

For background art, the utility model provides a graphite jig clamping tool includes the spacing portion of loading board, X axle, the spacing portion of Y axle and the spacing portion of Z axle. Wherein, the spacing portion of X axle and the spacing portion of Y axle all set firmly on the loading board, and the spacing portion of X axle and the spacing portion of Y axle all rely on the extrusion force to inject graphite jig and remove along the Y axle. The Z-axis limiting part limits the graphite mold to move along the Z axis by means of adsorption force.

Besides fixing the graphite mold by virtue of adsorption force, the utility model mainly fixes the graphite mold by virtue of extrusion force, and the cross arrangement of the main adsorption groove and the auxiliary adsorption groove can increase the vacuum adsorption area of the graphite mold to a certain extent, reduce the risk of position deviation of the graphite mold due to over-low air pressure or unstable air pressure, and is beneficial to improving the processing precision; in addition, the deformation degree of graphite mold can effectively be alleviated to a certain extent in the setting of main adsorption tank and vice adsorption tank, avoids frequently revising graphite mold, and invalid operating time shortens, and work efficiency promotes to some extent naturally.

Therefore, the utility model provides a graphite jig clamping tool can effectively promote machining precision and machining efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a structural diagram of a graphite mold clamping jig according to an embodiment of the present invention;

FIG. 2 is a structural view of the support base shown in FIG. 1;

FIG. 3 is an assembled structure view of the carrier plate and its attached components shown in FIG. 1.

The reference numbers are as follows:

the device comprises a bearing plate 1, an X-axis limiting part 2, a Y-axis limiting part 3, a Z-axis limiting part 4, a supporting seat 5, a limiting assembly 6, a fixing assembly 7 and a carrying handle 8;

an X-axis fixed limiting block 21, an X-axis fixed inclined guide block 22 and an X-axis sliding inclined stop block 23;

a Y-axis fixed limiting block 31, a Y-axis fixed inclined guide block 32 and a Y-axis sliding inclined stop block 33;

a vacuum pipe 41, an air supply cavity 42 and an adsorption cavity 43;

an adsorption through hole 431, a main adsorption groove 432, and an auxiliary adsorption groove 433;

a stopper hole 61 and a stopper post 62;

fixed column 71, rotating pressing block 72 and fixed hole 73.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only 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.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 3, fig. 1 is a structural diagram of a graphite mold clamping fixture according to an embodiment of the present invention; FIG. 2 is a structural view of the support base shown in FIG. 1; FIG. 3 is an assembled structure view of the carrier plate and its attached components shown in FIG. 1.

Preferably, it should be noted that the X axis in the text refers to the X axis shown in the XOY coordinate system in fig. 1, the Y axis in the text refers to the Y axis shown in the XOY coordinate system in fig. 1, and the Z axis in the text refers to the Z axis shown in the XOY coordinate system in fig. 1.

The embodiment of the utility model discloses graphite jig clamping tool, including loading board 1, the spacing portion 2 of X axle, the spacing portion 3 of Y axle and the spacing portion 4 of Z axle.

Wherein, the loading board 1 is used for supporting and limiting the graphite mold. In this embodiment, the carrier plate 1 is embodied as a rectangular thin plate.

Spacing portion 2 of X axle, spacing portion 3 of Y axle and the spacing portion 4 of Z axle all set firmly on loading board 1. Wherein, the spacing portion 2 of X axle can be followed X axle and two opposite sides counterbalance with graphite jig, relies on the extrusion force to prescribe a limit to graphite jig and removes along the X axle. Similarly, the Y-axis limiting part 3 can be abutted against two opposite sides of the graphite mold along the Y axis, and the graphite mold is limited to move along the Y axis by means of extrusion force. In this embodiment, the X-axis position-limiting portions 2 abut against the left and right sides of the graphite mold, and the Y-axis position-limiting portions 3 abut against the front and rear sides of the graphite mold, so as to limit the movement of the graphite mold in the XOY plane.

In addition, the spacing portion 4 of Z axle utilizes vacuum adsorption power to adsorb graphite jig bottom along the Z axle to rely on adsorption power to inject graphite jig and remove along the Z axle, spacing portion 4 of Z axle is equipped with adsorbs die cavity 43, adsorbs die cavity 43 and passes loading board 1 for adsorb fixed graphite jig along the Z axle. The adsorption cavity 43 comprises an adsorption through hole 431, a main adsorption groove 432 and an auxiliary adsorption groove 433, the adsorption through hole 431 comprises a plurality of through holes, all the adsorption through holes 431 pass through the bearing plate 1 along the Z axis, and each adsorption through hole 431 is communicated with a vacuum pump. Specifically, the bearing plate 1 is provided with three adsorption through holes 431 which are distributed along the Y axis in a staggered manner, and each adsorption through hole 431 is communicated with each air supply through hole in a one-to-one correspondence manner.

The main adsorption groove 432 is disposed in the center of the loading plate 1 far from the support base 5, and is in linear communication with all the adsorption through holes 431. In this particular embodiment, the primary adsorption groove 432 is a rectangular groove extending along the Y-axis. The auxiliary adsorption grooves 433 comprise a plurality of grooves, the auxiliary adsorption grooves 433 are staggered in a straight line mode by using two-two intercrossing as a group, the auxiliary adsorption grooves 433 after each group of intercrossing are communicated with the main adsorption groove 432, and the auxiliary adsorption grooves 433 after each group of intercrossing are uniformly distributed along the main adsorption groove 432. The adsorption cavity 43 having such a structure can realize uniform adsorption of the graphite mold, and further prevent deformation of the graphite mold.

In conclusion, the X-axis limiting part and the Y-axis limiting part are fixedly arranged on the bearing plate, and the X-axis limiting part and the Y-axis limiting part respectively correspond to limit the graphite mold to move along the X axis and the Y axis by means of extrusion force. The Z-axis limiting part limits the graphite mold to move along the Z axis by means of adsorption force. Besides fixing the graphite mold by virtue of adsorption force, the graphite mold is fixed by mainly depending on extrusion force, and the cross arrangement of the main adsorption groove and the auxiliary adsorption groove can increase the vacuum adsorption area of the graphite mold to a certain extent, ensure uniform adsorption of the graphite mold, reduce the risk of position deviation of the graphite mold due to over-low air pressure or unstable air pressure, and be beneficial to improving the processing precision; in addition, the deformation degree of graphite mold can effectively be alleviated to a certain extent in the setting of main adsorption tank and vice adsorption tank, avoids frequently revising graphite mold, and invalid operating time shortens, and work efficiency promotes to some extent naturally. Therefore, the utility model provides a graphite jig clamping tool can effectively promote machining precision and machining efficiency.

Considering the universality, the X-axis limiting part 2 and the Y-axis limiting part 3 are the same in structure and comprise fixed limiting blocks, fixed oblique guide blocks and sliding oblique stop blocks, the fixed limiting blocks and the fixed oblique guide blocks are fixed on the bearing plate 1, and the fixed limiting blocks and the fixed oblique guide blocks are oppositely arranged on two sides of the graphite mold. Every fixed oblique guide block has the direction inclined plane, and the oblique dog that slides is fixed in through fastener detachably fixed oblique guide block, when screwing the fastener, the oblique dog that slides along the direction inclined plane to being close to graphite jig slides until offseting with graphite jig to make the oblique dog that slides cooperate fixed stopper to inject graphite jig relative loading board 1 jointly and remove.

The X-axis limiting parts 2 are arranged on the left side and the right side of the graphite mold in groups, and each group of X-axis limiting parts 2 can press the graphite mold from the two sides of the graphite mold in a sliding manner. Considering that a positioning reference plane needs to be set when machining accuracy is high, in this embodiment, each set of the X-axis stopper portions 2 slidably presses the graphite mold from only one side thereof, and the other side thereof serves as a positioning reference plane to accurately define the position of the graphite mold in the X-axis.

Optionally, in this specific embodiment, the X-axis limiting part 2 includes an X-axis fixed limiting block 21, an X-axis fixed oblique guide block 22, and an X-axis sliding oblique stopper 23. Wherein, the X-axis fixed stopper 21 is fixed relative to the bearing plate 1. The X-axis fixed limiting block 21 is a rectangular stop block and is fixed on the left side of the bearing limiting plate through a fastening screw. It should be particularly noted that an X-axis positioning reference surface abutting against the graphite mold is disposed on the right side of the X-axis fixing limiting block 21, and is used for accurately defining the position of the graphite mold on the X axis.

The X-axis fixed oblique guide block 22 is fixed relative to the X-axis fixed limiting block 21, the X-axis fixed oblique guide block 22 is installed in an installation groove formed in the right side of the bearing plate 1 with reference to the current view of the attached drawing 1, and the X-axis fixed oblique guide block 22 is fixed in the installation groove through a fastening screw. It should be noted that the X-axis fixed oblique guide 22 is disposed higher than the mounting groove to prevent the mounting groove from preventing the X-axis sliding oblique stop 23 from sliding. The key point is that the X-axis fixed inclined guide block 22 is provided with an X-axis guide inclined plane, and the X-axis guide inclined plane is intersected with the X axis, so that the thickness of the X-axis fixed inclined guide block 22 is smaller as the X-axis fixed inclined guide block is closer to the graphite mold.

The X-axis sliding inclined stop block 23 is detachably fixed on the X-axis fixed inclined guide block 22 through an X-direction fastener, and specifically, the X-axis sliding inclined stop block 23 is provided with an X-axis matching inclined plane matched with the X-axis guiding inclined plane, and the X-axis matching inclined plane is also intersected with the X axis, so that the thickness of the X-axis sliding inclined stop block 23 is thicker as the thickness is closer to the graphite mold.

Considering that X axle fixed oblique guide block 22 links firmly through X to the fastener realization with X axle oblique dog 23 that slides, when screwing up X to the fastener around the Z axle, X axle oblique dog 23 that slides along X axle direction slant to the direction that is close to graphite jig, X axle oblique dog 23 that slides moves to the left simultaneously along the X axle, moves down along the Z axle, until X axle oblique dog 23 that slides offsets with graphite jig to make X axle fixed oblique guide block 22 cooperate X axle fixed stopper 21 to extrude graphite jig from the left and right sides of graphite jig respectively, inject graphite jig and remove along the X axle.

In this embodiment, two sets of X-axis fixed inclined guide blocks 22 are disposed on the right side of the bearing plate 1, but the number of the X-axis fixed inclined guide blocks 22 is not limited thereto, and can be adjusted according to the length of the graphite mold.

Also considering the processing precision, the structure of the Y-axis limiting part 3 is the same as that of the X-axis limiting part 2, that is, the Y-axis limiting part 3 includes a Y-axis fixing limiting block 31, a Y-axis fixing oblique guide block 32 and a Y-axis sliding oblique stop block 33, wherein the Y-axis fixing limiting block 31 is disposed at the rear side of the bearing plate 1, and has a Y-axis positioning reference surface abutting against the graphite mold for accurately defining the position of the graphite mold on the Y-axis. The Y-axis fixed ramp guide 32 has a Y-axis guide ramp, the structure of which is described with particular reference to the X-axis fixed ramp guide 22. The structure of the Y-axis slide ramp block 33 is described with particular reference to the X-axis fixed ramp guide 22. The Y-axis fixed inclined guide block 32 and the Y-axis sliding inclined stop block 33 are fixedly connected through a Y-direction fastener.

When the Y-direction fastener is screwed around the Z axis, the Y-axis sliding inclined stop block 33 slides towards the direction close to the graphite mold along the Y-axis guiding inclined surface, the Y-axis sliding inclined stop block 33 moves backwards along the Y axis and moves downwards along the Z axis at the same time until the Y-axis sliding inclined stop block 33 abuts against the graphite mold, so that the Y-axis fixing inclined stop block 32 is matched with the Y-axis fixing limiting block 31 to extrude the graphite mold from the front side, the rear side and the right side of the graphite mold respectively, and the graphite mold is limited to move along the Y axis.

Of course, the structure of the X-axis stopper 2 and the structure of the Y-axis stopper 3 are not limited to these.

The utility model discloses still including the supporting seat 5 that is used for supporting loading board 1. The supporting seat 5 comprises a supporting plate and supporting legs, the supporting plate is fixed on the supporting legs, and the supporting plate is parallel to the bearing plate 1.

For realizing clamping graphite jig, the utility model discloses still including locating spacing subassembly 6 between supporting seat 5 and the loading board 1 to inject loading board 1 and remove in the XOY plane for supporting seat 5.

In this embodiment, the position-limiting component 6 includes a plurality of sets of position-limiting holes 61 and position-limiting posts 62 disposed between the supporting base 5 and the supporting plate 1, each set of position-limiting holes 61 and position-limiting posts 62 are nested and matched, and all the position-limiting holes 61 and position-limiting posts 62 matched with each other are distributed annularly.

Specifically, considering that loading board 1 and supporting seat 5 all are the rectangular sheet, spacing subassembly 6 specifically includes four sets of spacing holes 61 and the spacing post 62 of mutually supporting, and every mutual spacing hole 61 of every group and spacing post 62 are located each apex angle of loading board 1 respectively, and spacing hole 61 and the spacing post 62 of all mutually supporting form the rectangular ring structure.

The bearing plate 1 is fixedly provided with two limiting holes 61, and the two limiting holes 61 are respectively arranged on two vertex angles of the bearing plate 1. Install in every spacing hole 61 with spacing post 62 matched with stop collar, the stop collar can be linear bearing, reduces the frictional resistance between spacing hole 61 and the spacing post 62 to reduce spacing post 62's the degree of difficulty of inserting, can also promote spacing hole 61 and spacing post 62's cooperation precision simultaneously.

Each limiting column 62 is correspondingly matched with each limiting hole 61 one by one, and all the limiting columns 62 are also distributed in a diagonal shape. The number of the position-limiting posts 62 is specifically determined by the position-limiting holes 61, and is not specifically limited herein. Each limit column 62 is vertically arranged on the support base 5.

Therefore, the limiting hole 61 and the limiting post 62 need to be configured, and the number of the two is specifically set according to the actual situation.

In this embodiment, the position-limiting columns 62 are specifically at least one set of diagonally distributed fixing columns 71, and each fixing column 71 passes through the bearing plate 1 and the supporting seat 5 simultaneously along the Z-axis direction. The first end of every fixed column 71 all is equipped with adjusting nut, and correspondingly, the first end of fixed column 71 is equipped with the external screw thread with adjusting nut matched with. A second end of each fixed column 71 is provided with a rotating pressing block 72, and the rotating pressing blocks 72 can rotate around the Z axis relative to the fixed columns 71.

Specifically, the cross section of the fixed column 71 is square, the cross section of the rotating pressing block 72 is rectangular, and the length of the rotating pressing block 72 is greater than the width of the fixed column 71.

The limiting holes 61 are specifically fixing holes 73 which are arranged on the bearing plate 1 and through which the rotating pressing blocks 72 correspondingly pass one by one. Since the fixing posts 71 are diagonally distributed, the fixing holes 73 are also diagonally distributed. Specifically, the cross section of each fixing hole 73 is also rectangular, so that the rotating pressing block 72 can conveniently penetrate through the fixing hole 73. The number of the fixing holes 73 is determined by the fixing posts 71, and is not particularly limited.

The key is that the interlude of every fixed column 71 all overlaps and is equipped with the regulating spring that both ends offset with supporting seat 5 and adjusting nut respectively, and regulating spring's setting is conveniently adjusted and is rotated briquetting 72 and apply to the pressure that fixed orifices 73 hole was followed, and when pressure was big enough, loading board 1 just was fixed in on the supporting seat 5.

In an initial state, the adjusting spring keeps a compressed state, and two ends of the adjusting spring are respectively abutted against the bottom surface of the supporting seat 5 and the adjusting nut;

when the bearing plate is used, the bearing plate 1 is placed on the supporting seat, the rotating pressing blocks 72 correspondingly penetrate through the fixing holes 73 one by one until the bottoms of the rotating pressing blocks 72 are flush with the top surfaces of the fixing holes 73; then, the rotating pressing block 72 is rotated, and the rotating pressing block 72 rotates to abut against the hole edge of the fixing hole 73; then, the adjusting nut is rotated, the adjusting nut moves upwards along the fixing column 71 to be close to the supporting seat 5, the adjusting spring is pressed, the rotating pressing block 72 presses and fixes the hole edge of the fixing hole 73 by means of elastic force, and the bearing plate 1 is fixed on the supporting seat 5 by means of the elastic force applied by the adjusting spring.

In this embodiment, the Z-axis limiting portion 4 further includes a vacuum pipe 41 and an air supply cavity 42, wherein the vacuum pipe 41 is disposed on one side of the supporting base 5, and is connected to a vacuum pump for providing vacuum negative pressure.

The air supply cavity 42 is arranged in the support base 5, is communicated with the vacuum pipeline 41 and the adsorption cavity 43, and is used for guiding vacuum negative pressure air to blow into the bearing plate 1. In this embodiment, the gas supply cavity 42 includes a cylindrical cavity provided in the support base 5 and extending in the Y-axis direction, and the inner diameter of the cylindrical cavity is equal to the inner diameter of the vacuum duct 41. The air supply cavity 42 further comprises a plurality of air supply through holes extending along the Z-axis direction and communicated with the cylindrical cavity, and specifically, the support seat 5 is provided with three air supply through holes distributed along the Y-axis in a staggered manner. Each of the adsorption through holes 431 and each of the gas supply through holes are circular through holes having the same inner diameter. Of course, the structure of the gas supply cavity 42 is not limited thereto.

The utility model discloses still including being equipped with the transport handle 8 of loading board 1 both sides relatively, conveniently carry loading board 1. In this embodiment, the carrying handles 8 are respectively disposed at the front and rear sides of the carrying plate 1, and both the carrying handles 8 are fixed to the side surfaces of the carrying plate 1 by fastening screws.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The utility model provides a graphite mold clamping tool which characterized in that includes:

a bearing plate (1) for bearing the graphite mold;

an X-axis limiting part (2) and a Y-axis limiting part (3) which are fixedly arranged on the bearing plate (1) and used for abutting against the opposite sides of the graphite mold so as to correspondingly limit the movement of the graphite mold along the X axis and the Y axis;

the Z-axis limiting part (4) is arranged on the bearing plate (1) and used for absorbing the bottom end of the graphite mold through vacuum adsorption force to limit the graphite mold to move along the Z axis, and an adsorption cavity (43) is arranged on the Z-axis limiting part (4);

the adsorption cavity (43) comprises a plurality of adsorption through holes (431) which penetrate through the bearing plate (1) for supplying vacuum gas, a main adsorption groove (432) which is arranged at the center of the bearing plate (1) and is communicated with all the adsorption through holes (431) along the linear direction, and a plurality of auxiliary adsorption grooves (433) which are arranged in a cross mode and are communicated with the main adsorption groove (432) for uniformly adsorbing the graphite mold.

2. The graphite mold clamping jig according to claim 1, wherein the structure of the Y-axis limiting part (3) is the same as that of the X-axis limiting part (2), and the X-axis limiting part (2) comprises:

the fixed limiting blocks and the fixed inclined guide blocks are respectively fixed on the bearing plate (1) and are oppositely arranged on two sides of the graphite mold; the fixed inclined guide block is provided with a guide inclined plane;

the sliding inclined stop block is detachably fixed on the fixed inclined guide block through a fastener; when the fastener is screwed, the sliding inclined stop block slides along the guide inclined plane in the direction close to the graphite mold until the sliding inclined stop block abuts against the graphite mold to be matched with the fixed limiting block to limit the movement of the graphite mold.

3. The graphite mold clamping jig of claim 1, further comprising:

a supporting seat (5) for supporting the bearing plate (1);

the limiting component (6) is arranged between the supporting seat (5) and the bearing plate (1) and used for limiting the movement of the bearing plate (1) relative to the supporting seat (5).

4. The graphite mold clamping jig according to claim 3, characterized in that the limiting component (6) comprises a plurality of sets of limiting holes (61) and limiting columns (62) which are arranged between the supporting seat (5) and the bearing plate (1) and are in nested fit, and the limiting holes (61) and the limiting columns (62) which are all matched with each other are distributed annularly.

5. The graphite mold clamping jig according to claim 4, wherein the limiting columns (62) are at least one set of fixing columns (71) which are distributed diagonally and penetrate through the supporting seat (5) and the bearing plate (1), a first end of each fixing column (71) is sleeved with an adjusting nut, a second end of each fixing column (71) is provided with a rotating pressing block (72) which rotates relative to the corresponding fixing column (71), the limiting holes (61) are fixing holes (73) which are formed in the bearing plate (1) and allow the rotating pressing blocks (72) to penetrate through one by one, and the fixing columns (71) are sleeved with adjusting springs of which two ends are respectively abutted against the supporting seat (5) and the adjusting nuts; when the rotating pressing block (72) rotates to abut against the hole edge of the fixing hole (73), the adjusting nut is rotated to enable the bearing plate (1) to be fixed on the supporting seat (5) by means of elastic force exerted by the compressed adjusting spring.

6. The graphite mold clamping jig according to any one of claims 3 to 5, wherein the Z-axis limiting part (4) further comprises:

the vacuum pipeline (41) is arranged on one side of the supporting seat (5) and is used for providing vacuum negative pressure;

and the air supply cavity (42) is arranged on the supporting seat (5) and is respectively communicated with the vacuum pipeline (41) and the adsorption cavity (43).

7. The graphite mold clamping jig according to any one of claims 1 to 5, further comprising carrying handles (8) oppositely arranged at two sides of the bearing plate (1) and used for carrying the bearing plate (1).

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