CN211762852U - Automatic mode locking and die sinking structure of centrifugal casting machine - Google Patents

Abstract

The utility model discloses an automatic mode locking and die sinking structure of centrifugal casting machine. The automatic mold locking and opening structure of the centrifugal casting machine comprises a first driving mechanism, a first plate, a first mandrel, an upper mold, a limiting plate, a first elastic part, a second plate, a clamping hook, a linkage mechanism, a position adjusting mechanism, a second mandrel and a lower mold, wherein the first driving mechanism is arranged on a machine body; the mandrel II is arranged on the machine body, the lower die is arranged on the mandrel II, the clamping hook is arranged on the lower die and used for being clamped with the clamping plate, and a linkage mechanism is arranged between the clamping plate and the clamping hook. The clamping of the clamping hook and the clamping plate realizes mechanical mold locking and mold opening, improves the production efficiency, and solves the problem of safety in manual mold locking.

Description

Automatic mode locking and die sinking structure of centrifugal casting machine

Technical Field

The utility model relates to a centrifugal casting machine, in particular to centrifugal casting machine mode locking and die sinking structure.

Background

MC nylon is MCPA cast nylon which is a novel engineering plastic, the material is a high polymer engineering plastic with high strength, good rigidity, small density, wear resistance, friction reduction, oil resistance, corrosion resistance, easy processing and forming and moderate price, the production process is similar to the process of copper-iron casting manufacturing, a centrifugal casting machine is usually adopted for production, raw materials can be directly injected into a preheated mold for rapid polymerization and solidification forming, the process needs to mold an upper mold and a lower mold in the centrifugal casting machine, then the raw materials are directly injected into the preheated upper mold and the lower mold of the nylon centrifugal casting machine, the upper mold and the lower mold are driven to rotate by a motor, the raw materials are rapidly polymerized in the mold and solidified and formed, the stability and the compactness of the mold locking play an important role in solidification and forming of the raw materials, but the mold locking and mold opening are usually carried out manually in the process of the existing centrifugal casting machine, if the upper die and the lower die are tightly connected in a threaded connection mode, the corresponding die opening process also needs to be manually opened after bolts for connecting the upper die and the lower die are loosened, and the mode of manually locking and opening the die greatly reduces the production efficiency and increases the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a centrifugal casting machine mode locking and die sinking structure through mechanical mode locking mode, has realized mechanized mode locking, has improved production efficiency to guaranteed the stability and the compactness of last mould and lower mould closure within a definite time, solved the potential safety hazard that artifical mode locking and die sinking exist.

In order to realize the utility model discloses the purpose, the utility model relates to an automatic mode locking of centrifugal casting machine and die sinking structure adopts following technical scheme:

an automatic mold locking and opening structure of a centrifugal casting machine comprises a first driving mechanism, a first plate, a first mandrel, an upper mold, a limiting plate, a first elastic part, a second plate, a clamping hook, a linkage mechanism, a position adjusting mechanism, a second mandrel and a lower mold, wherein the first driving mechanism is installed on a machine body of the centrifugal casting machine, the first driving mechanism is connected with the first plate and is used for driving the first plate to move vertically, the first mandrel is connected with the first plate in a sliding mode vertically, the limiting plate is arranged at the upper end of the first plate and is installed on the first mandrel, the position adjusting mechanism is installed on the first plate and is used for adjusting the distance between the limiting plate and the first plate, the upper mold is installed at the lower end of the first mandrel, the second plate is movably connected with the middle part of the first mandrel, at least two clamping plates are installed at the lower end, the elastic piece I is arranged between the plate II and the upper die, and the plate II is in contact with the plate I under the action of the elastic force of the elastic piece I; the second mandrel is installed on the machine body, the lower die is arranged under the upper die and installed at the upper end of the second mandrel, the clamping hooks correspond to the clamping plates one to one and are installed at the lower die, the clamping hooks are used for achieving clamping with the clamping plates, the clamping plates and the linkage mechanisms are arranged between the clamping hooks, when the upper die and the lower die are locked, the linkage mechanisms are used for driving the clamping hooks to move towards the clamping plates, and when the upper die and the lower die are opened, the linkage mechanisms are used for driving the clamping hooks to be separated from the clamping plates.

When the mold is locked, the first driving plate of the driving mechanism moves downwards, so that the first mandrel drives the upper mold to move towards the lower mold, the linkage mechanism drives the clamping hook to move towards the clamping plate and enable the clamping hook to move into the clamping plate, after the upper mold is contacted with the lower mold, the first driving mechanism stops moving, the distance between the limiting plate and the first plate is adjusted through the position adjusting mechanism, the first driving plate of the driving mechanism moves upwards, the elastic piece pushes the second plate to move upwards, the clamping plate moves upwards, the second plate stops moving until the clamping plate is clamped with the clamping hook, and then the first driving mechanism continues moving upwards to enable the second plate to be separated from the first plate, so that the mold locking is achieved; during the die sinking, move down by actuating mechanism drive plate one, board one slurcam two for the cardboard downstream, then adjust the distance between limiting plate and the board one through position control mechanism, actuating mechanism drive plate one moves up, through link gear drive trip and cardboard separation, realizes the die sinking process.

Compared with the prior art, the beneficial effects of the utility model reside in that: the clamping of trip and cardboard realizes mechanized mode locking and die sinking, has improved production efficiency to guarantee the compactness and the stability that last mould and lower mould are connected, solved the problem of the security that artifical mode locking exists.

On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:

further: the clamping plate is provided with a clamping hole, the clamping hook is provided with a clamping groove, and the clamping groove is used for being clamped with the clamping hole.

Further: the linkage mechanism comprises a top rod and an elastic piece II, the clamping hook is rotatably connected with the lower die, the top rod is arranged on the plate II or the upper die, and when the upper die and the lower die are assembled, the top rod is used for pushing the clamping hook to rotate and enabling the clamping groove to rotate into the clamping hole; the elastic piece II is arranged between the clamping hook and the lower die or between the clamping hook and the clamping hook, and when the upper die and the lower die are opened, the elastic piece II enables the clamping hook to rotate and enables the clamping groove to be separated from the clamping hole. The beneficial effect of this step: the ejector rod pushes the clamping hook to rotate, so that the clamping hook moves towards the clamping plate in the mode locking process, the clamping hook is driven to rotate through the second elastic piece, and the clamping hook and the clamping plate are separated in the mode opening process.

Further: the position adjusting mechanism comprises a base plate and a second driving mechanism, the second driving mechanism is installed on the plate and is connected with the base plate, and the second driving mechanism is used for moving the base plate into the space between the first plate and the limiting plate or moving the first plate out of the space between the first plate and the limiting plate. The beneficial effect of this step: through the motion of two drive backing plates of actuating mechanism, realize that the backing plate gets into between board one and the limiting plate or the backing plate shifts out from between limiting plate and board one, thereby realize the regulation of distance between board one and the limiting plate through the backing plate, the regulating variable is the thickness of backing plate promptly, put aside the back when backing plate from between board one and the limiting plate, the thickness of backing plate becomes the distance that can continue to shift up that board one goes out more promptly, in this distance, realize the joint of trip and cardboard, realize the joint in draw-in groove and joint hole promptly, and guaranteed the mode locking and accomplished the back, the separation of board one and board two and the separation of board one and limiting plate.

Further: the driving mechanism II comprises a cam, a mounting seat, a push rod and a third elastic piece, the cam is rotatably mounted on the upper end face of the plate I, the mounting seat and the cam are arranged at intervals and mounted on the plate I, the push rod is slidably arranged on the mounting seat, the third elastic piece is arranged between the push rod and the mounting seat, the end part of the push rod is tightly attached to the outer peripheral face of the cam through the third elastic piece, and the base plate is mounted at the other end of the push rod.

Further: the second driving mechanism comprises a motor, the motor is installed on the first plate, and the cam is installed on an output shaft of the motor. The beneficial effect of this step: the motor drives the cam to rotate, so that the mechanical movement of the driving base plate is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is an enlarged view of a portion B of FIG. 1;

FIG. 4 is a schematic view of the structure of the clamping plate and the clamping hook when the mold is opened;

FIG. 5 is a schematic view of the structure of the clamping plate and the clamping hook during mold locking;

fig. 6 is a schematic structural view of the position adjustment mechanism.

The mechanical device comprises a driving mechanism I, a driving mechanism 2 plate I, a driving mechanism 201 through hole I, a driving mechanism 3 mandrel I, an upper die 4, a limiting plate 5, an elastic part I, a driving mechanism 7 plate II, a driving mechanism 701 through hole II, a driving mechanism 8 plate III, a driving mechanism 9 clamping plate, a clamping hole 901, a clamping hook 10, a clamping groove 1001, a 1002 arc surface, a linkage mechanism 11, an 1101 ejector rod, an elastic part II, a position adjusting mechanism 12, a base plate 1201, a cam 1202, a 1203 mounting seat 1203, a 1204 push rod, a 1205 stop block, a 1206 elastic part III, a 1207 cavity, a driving mechanism 1208 through hole III, a driving mechanism.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

As shown in fig. 1, 2, 3 and 4, an automatic mold locking and opening structure of a centrifugal casting machine comprises a driving mechanism I1, a plate I2, a mandrel I3, an upper mold 4, a limiting plate 5, an elastic piece I6 and a plate II 7, the device comprises a plate III 8, a clamping plate 9, a clamping hook 10, a linkage mechanism 11, a position adjusting mechanism 12, a mandrel II 13 and a lower die 14, wherein a driving mechanism I1 is arranged on a machine body 15 of the centrifugal casting machine, the driving mechanism I1 is provided with a movable end I which moves along a straight line, the movable end I is connected with a plate I2, the driving mechanism I1 is used for driving the plate I2 to move along the vertical direction, the driving mechanism I1 in the embodiment is a hydraulic cylinder, a cylinder body of the hydraulic cylinder is arranged on the machine body 15, a piston cylinder of the hydraulic cylinder is vertically arranged downwards, the plate I2 is arranged at the end part of a piston rod, and the driving mechanism I1 can be a cylinder, an electric push rod; the first plate 2 is provided with a first through hole 201 matched with the first mandrel 3 correspondingly to the first mandrel 3, the first mandrel 3 is inserted into the first through hole 201 in a clearance manner, the upper end of the first mandrel 3 extends out of the first plate 2 and is connected with a limiting plate 5, the limiting plate 5 is used for limiting so as to prevent the first mandrel 3 from being separated from the first through hole 201, and therefore the sliding connection between the first mandrel 3 and the first plate 2 is realized, a position adjusting mechanism 12 is arranged on the first plate 2 and is used for adjusting the clearance between the limiting plate 5 and the first plate 2, the lower end of the first mandrel 3 is fixedly connected with a third plate 8, an upper die 4 is connected with the third plate 8 through bolts, so that the upper die 4 is connected with the lower end of the first mandrel 3, the second plate 7 is horizontally arranged, a second through hole 701 matched with the appearance of the first mandrel 3 is vertically arranged in the middle of the second plate 7, the first mandrel 3 is inserted into the second, an elastic part I6 is arranged between the first plate 2 and the second plate 7, the upper end face of the second plate 7 is in contact with the lower end face of the first plate 2 under the action of the elastic force of the elastic part I6, the elastic part I6 is a first pressure spring, the automatic mold locking and opening structure of the centrifugal casting machine further comprises positioning blocks, each first pressure spring is correspondingly provided with two positioning blocks, one positioning block is connected to the upper end face of the third plate 8, the other positioning block is connected to the lower end face of the second plate 7, the pressure springs are sleeved on the outer sides of the two corresponding positioning blocks, and the maximum downward moving distance of the second plate 7 is limited through; the second mandrel 13 is mounted on the machine body 15, the second mandrel 13 and the first mandrel 3 are coaxially arranged and are arranged under the first mandrel 3, the lower die 14 is arranged under the upper die 4 and is mounted at the upper end of the second mandrel 13, the clamping hooks 10 are the same as the clamping plates 9 in quantity and correspond to the clamping plates 9 one by one, the clamping hooks 10 are mounted on the outer wall of the lower die 14, the clamping hooks 10 can also be mounted on the second mandrel 13 through supports, clamping holes 901 are formed in the clamping plates 9, clamping grooves 1001 are formed in the clamping hooks 10 and are used for being clamped with the clamping holes 901, a linkage mechanism 11 is arranged between the clamping plates 9 and the clamping hooks 10, when the upper die 4 and the lower die 14 are locked, the linkage mechanism 11 is used for driving the clamping hooks 10 to move towards the clamping plates 9, and when the upper die 4 and the lower die 14 are opened, the.

As shown in fig. 4 and 5, the linkage mechanism 11 includes a top bar 1101 and a second elastic member 1102, two of the clamping boards 9 are in a group and form a clamping board group, the board surfaces of two clamping boards 9 in the same clamping board group are parallel to each other and are arranged at intervals, two of the hooks 10 are in a group and form a hook group, two hooks 10 in the same hook group are arranged at intervals, the hook groups and the clamping board groups are in one-to-one correspondence, the hooks 10 are rotatably connected with the lower die 14, the outer surface of the lower end of each hook 10 is a circular arc 1002, the center of the circular arc 1002 is not concentric with the center of rotation of the hook 10, when the upper die 4 contacts with the lower die 14, the circle of the circular arc 1002 is located right below the center of rotation of the hook 10, the top bar 1101 arranged vertically is arranged between two clamping boards 9 in the clamping board group, the upper end of the top bar 1101 is connected to the second elastic member 7 through a screw thread, the lower end of the top bar 1101 is cylindrical, the lower, before the upper die 4 and the lower die 14 are locked, the arc surface 1002 of the hook 10 and a gap between the arc surfaces 1002 of the two hooks 10 are positioned right below the lower end surface of the ejector 1101, when the upper die 4 and the lower die 14 are locked, the ejector 1101 moves downwards, when the arc-shaped lower end surface of the ejector 1101 is contacted with the arc surface 1002 of the hook 10, the ejector 1101 pushes the hook 10 to rotate, and when the upper die 4 is contacted with the lower die 14, the clamping groove 1001 of the hook 10 moves into the clamping hole 901; an elastic element II 1102 is arranged between the hook 10 and the lower die 14 or between the hook 10 and the hook 10, when the upper die 4 and the lower die 14 are opened, the elastic element II 1102 enables the hook 10 to rotate and enables the slot 1001 to be separated from the clamping hole 901, the elastic element II 1102 is a tension spring (shown in figures 4 and 5), the tension spring is located below the rotation center of the hook 10, two ends of the tension spring are respectively connected to the corresponding hooks 10, and the arc surfaces 1002 at the lower ends of the hooks 10 rotate to be close to each other through the tension force of the tension spring; the second elastic element 1102 can also be a second pressure spring, the second pressure spring is located above a rotation point of the hook 10 and is arranged between the two hooks 10 of the hook group, when the hooks 10 rotate towards the clamping plate 9 under the pushing of the push rod 1101, the two opposite surfaces of the hooks 10 compress the second pressure spring, and when the push rod 1101 is separated from the hooks 10, the elasticity of the second pressure spring pushes the hooks 10 to rotate, and the upper ends of the hooks 10 are enabled to move out of the clamping holes 901.

As shown in fig. 3 and 6, the position adjusting mechanism 12 includes a base plate 1201 and a second driving mechanism, the second driving mechanism is mounted on the first plate 2, the second driving mechanism has a second movable end moving along a straight line, the base plate 1201 is mounted on the second movable end, and the second driving mechanism is used for moving the base plate 1201 into between the first plate 2 and the limiting plate 5 or out from between the first plate 2 and the limiting plate 5; the second driving mechanism in this embodiment includes a cam 1202, a mounting base 1203, a push rod 1204, a stopper 1205, and an elastic member three 1206, the cam 1202 is rotatably mounted on the upper end surface of the first plate 2, the mounting base 1203 and the cam 1202 are arranged at an interval and mounted on the first plate 2, a cavity 1207 is arranged in the middle of the mounting base 1203, through holes three 1208 are formed in the two end surfaces of the mounting base 1203, the push rod 1204 is slidably disposed in the through holes three 1208, two ends of the push rod 1204 respectively penetrate through the through holes three 1208 and extend out of the mounting base 1203, the elastic member three 1206 is arranged between the push rod 1204 and the mounting base 1203, the elastic member three 1206 enables the end of the push rod 1204 to be closely attached to the outer peripheral surface of the cam 1202, the cushion plate 1201 is mounted at the other end of the push rod 1204, when the push rod 1204 contacts with the surface of the outer periphery of the cam 1202 farthest from the rotation center of the cam 1202, the, the base plate 1201 moves out from the position-limiting plate 5 and the plate one 2, an elastic piece three 1206 is a pressure spring three in the embodiment, the pressure spring three is arranged in the cavity 1207 and sleeved outside the push rod 1204, a stopper 1205 is arranged in the cavity 1207 and connected to the push rod 1204 through threads, the stopper 1205 divides the cavity 1207 into two parts, the pressure spring three is arranged in the cavity 1207 close to the side of the base plate 1201 one 2, the pressure spring three pushes the stopper 1205, the end part of the push rod 1204 is always in contact with the outer surface of the cam 1202, and the cam 1202 is driven to rotate in a manual mode when the position-adjusting mechanism 12 works; in order to improve the utility model discloses an degree of automation, actuating mechanism two still includes the motor, and the motor is step motor or servo motor, and the motor is installed in board one 2, and cam 1202 installs in the output shaft of motor, rotates through motor drive cam 1202.

The connection mode of the connection, the setting, the installation and the fixed connection can be realized by selecting a proper connection mode in the existing prior art, such as welding, riveting, threaded connection, bonding, pin connection, key connection, elastic deformation connection, clamping, interference connection and injection molding, and in actual production, the connection mode with lower cost and high production efficiency can be selected according to production conditions on the premise of realizing the connection purpose and ensuring the connection effect.

The working process and principle of the mode locking of the upper die 4 and the lower die 14 are as follows:

the driving mechanism I1 drives the plate I2 to move downwards, so that the mandrel I3 drives the upper die 4 to move towards the lower die 14, when the lower end face of the ejector rod 1101 is in contact with the arc face 1002 of the clamping hook 10, the ejector rod 1101 pushes the clamping hook 10 to rotate, when the upper die 4 is in contact with the lower die 14, the upper end of the clamping hook 10 moves into the clamping hole 901, the inner wall of the clamping groove 1001 is relatively parallel to and spaced from the inner wall of the clamping hole 901, the driving mechanism I1 continues to move downwards, the plate I2 pushes the plate II 7 to compress the elastic piece I6, after the upper die 4 is in contact with the lower die 14, the upper die 4 keeps fixed, the plate I2 continues to move downwards, so that a gap is formed between the limiting plate 1201 and the cushion plate 1201, then the driving mechanism I1 stops, the cam 1202 is driven to rotate, the push rod 1204 moves along the periphery of the cam 1202 until the cushion plate I2 moves out from the limiting plate 5, and the distance between the limiting plate I2 is equal to the thickness of the Distance, the driving mechanism I1 drives the plate I2 to move upwards, the mandrel I3 keeps still, the upper die 4 is still, the elastic piece I6 pushes the plate II 7 to move upwards along the mandrel I3, namely, the inner wall of the clamping hole 901 moves towards the inner wall of the clamping groove 1001 until the inner wall of the clamping hole 901 contacts with the inner wall of the clamping groove 1001 and generates pretightening force, the plate II 7 stops moving, at the moment, the upper die 4 and the lower die 14 are connected through clamping of the clamping hook 10 and the clamping hole 901 to achieve tight locking, the driving mechanism I1 drives the plate I2 to move upwards for a certain distance, the plate II 7 is separated from the plate I2 and the limiting plate 5 is separated from the plate I2, then the driving mechanism I1 stops moving, and the mode locking process is completed.

The working process and principle of opening the upper die 4 and the lower die 14 are as follows:

the first driving plate 2 moves downwards by the first driving mechanism 1, the first driving plate 2 pushes the second driving plate 7 to compress the first elastic part 6, the clamping plate 9 connected with the second driving plate 7 moves downwards, the inner wall of the clamping hole 901 is separated from the inner wall of the clamping groove 1001, when the gap between the first driving plate 2 and the limiting plate 5 is larger than the thickness of the base plate 1201, the first driving mechanism 1 stops moving, the driving cam 1202 rotates, the end part of the push rod 1204 moves along the outer surface of the cam 1202 until the base plate 1201 moves to a position between the limiting plate 5 and the first driving plate 2, then the first driving mechanism 1 moves upwards along with the first driving plate 2, the first driving plate 2 pushes the limiting plate 5 to move upwards through the base plate 1201, the first mandrel 3 moves upwards, the ejector rod moves upwards, the second elastic part 1102 enables the clamping hook 10 to synchronously rotate along with the upward movement of the ejector rod 1101, so that the upper end of the clamping hook 10 is separated from the clamping hole 901, the first driving mechanism, thereby completing the process of opening the upper mold 4 and the lower mold 14.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (6)

1. An automatic mold locking and opening structure of a centrifugal casting machine is characterized by comprising a first driving mechanism, a first plate, a first mandrel, an upper mold, a limiting plate, a first elastic part, a second plate, a clamping hook, a linkage mechanism, a position adjusting mechanism, a second mandrel and a lower mold, wherein the first driving mechanism is installed on a machine body of the centrifugal casting machine and is connected with the first plate, the first driving mechanism is used for driving the first plate to move vertically, the first mandrel is connected with the first plate in a sliding mode vertically, the limiting plate is arranged at the upper end of the first plate and is installed on the first mandrel, the position adjusting mechanism is installed on the first plate and is used for adjusting the distance between the limiting plate and the first plate, the upper mold is installed at the lower end of the first mandrel, the second plate is movably connected with the middle part of the first mandrel, at least two clamping plates are installed at the lower end of, the elastic piece I is arranged between the plate II and the upper die, and the plate II is in contact with the plate I under the action of the elastic force of the elastic piece I; the second mandrel is installed on the machine body, the lower die is arranged under the upper die and installed at the upper end of the second mandrel, the clamping hooks correspond to the clamping plates one to one and are installed at the lower die, the clamping hooks are used for being clamped with the clamping plates, the linkage mechanism is arranged between the clamping hooks, when the upper die and the lower die are locked, the linkage mechanism is used for driving the clamping hooks to move towards the clamping plates, and when the upper die and the lower die are opened, the linkage mechanism is used for driving the clamping hooks to be separated from the clamping plates.

2. The automatic mold locking and opening structure of a centrifugal casting machine according to claim 1, wherein the clamping plate is provided with a clamping hole, and the clamping hook is provided with a clamping groove for clamping with the clamping hole.

3. The automatic mold locking and opening structure of a centrifugal casting machine according to claim 2, wherein the linkage mechanism comprises a second elastic member and a second ejector rod, the second clamping hook is rotatably connected with the lower mold, the ejector rod is mounted on the second plate or the upper mold, and when the upper mold and the lower mold are locked, the ejector rod is used for pushing the second clamping hook to rotate and rotating the clamping groove into the clamping hole; the elastic piece II is arranged between the clamping hook and the lower die or between the clamping hook and the clamping hook, and when the upper die and the lower die are opened, the elastic piece II enables the clamping hook to rotate and enables the clamping groove to be separated from the clamping hole.

4. The automatic mold locking and opening structure of a centrifugal casting machine according to any one of claims 1 to 3, wherein the position adjusting mechanism comprises a backing plate and a second driving mechanism, the second driving mechanism is mounted on the plate and connected with the backing plate, and the second driving mechanism is used for moving the backing plate into or out of the space between the first plate and the limiting plate.

5. The automatic mold locking and opening structure of a centrifugal casting machine according to claim 4, wherein the second driving mechanism comprises a cam, a mounting seat, a third elastic member, and a push rod, the cam is rotatably mounted on the upper end surface of the first plate, the mounting seat is spaced from the cam and mounted on the first plate, the push rod is slidably mounted on the mounting seat, the third elastic member is disposed between the push rod and the mounting seat, the third elastic member enables the end portion of the push rod to be tightly attached to the outer peripheral surface of the cam, and the backing plate is mounted on the other end of the push rod.

6. The automatic mold locking and opening structure for a centrifugal casting machine according to claim 5, wherein said second driving mechanism comprises a motor, said motor is mounted on said first plate, and said cam is mounted on an output shaft of said motor.

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