A large thin-walled wax pattern and a process for precision investment casting using a wet wax

Abstract

The present application relates to wax mold technology field, disclose a kind of large thin-walled wax mold and for wet wax precision casting production process, including fixing frame, the fixing frame is provided with electric push rod, movable mould and fixed mould, the movable mould, fixed mould is provided with heat dissipation mechanism, the movable mould is provided with stripping mechanism, the fixed mould is provided with top pressure mechanism and wax injection port, the movable mould is also provided with rotating mechanism, the rotating mechanism includes motor and locking piece.The present application can demould the workpiece, while avoiding the workpiece from being stuck in the fixed mould, thereby greatly improving the practical convenience, and after demoulding the workpiece, water-based release agent can be sprayed in the fixed mould and movable mould, thereby avoiding the need for manual spraying of water-based release agent, and the forming effect and forming quality of the workpiece can also be improved, finally the locking piece can be automatically driven to contact and lock the fixed mould, thereby greatly improving the practicality and convenience of use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wax injection mold, in particular to a large thin-walled wax mold and a wet wax precision casting production process. BACKGROUND

[0002] The wax injection mold is the core tool in precision casting (especially investment casting / lost wax casting), which is used to manufacture high-precision wax models (wax molds). When in use, the mold is closed by the movable mold and the fixed mold, then the wax liquid is injected into the mold through the wax injection port. After the wax liquid cools down, the workpiece can be taken out.

[0003] In order to avoid the workpiece from being attached or stuck in the mold after forming, the wax injection mold on the market generally applies release agent to the mold before wax injection. However, the application of release agent is mostly manual, which affects the efficiency of batch wax injection. Although the existing wax injection mold can improve the effect of wax injection by vacuum wax injection, there are still some defects in the workpiece after forming when the workpiece shape is complex or the number of parts on the workpiece is large. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a large thin-walled wax mold and a wet wax precision casting production process, which solves the above problems.

[0005] To solve the above technical problems, the present application provides the following technical scheme: a large thin-walled wax mold, comprising a fixing frame, an electric push rod, a movable mold and a fixed mold are arranged on the fixing frame, a heat dissipation mechanism is arranged on the movable mold and the fixed mold, the electric push rod can drive the movable mold to close with the fixed mold during wax injection;

[0006] A release mechanism is arranged on the movable mold, which is used for releasing the workpiece in the movable mold, and can spray release agent on the movable mold after releasing;

[0007] A pressing mechanism and a wax injection port are arranged on the fixed mold, the wax injection port is used for injecting wax into the fixed mold, and the pressing mechanism is used for pushing the workpiece in the fixed mold into the movable mold, and spraying release agent in the fixed mold after pushing;

[0008] A rotating mechanism is further arranged on the movable mold, the rotating mechanism comprises a motor and a locking piece, the motor is used for driving the movable mold to rotate, and the locking piece is used for locking the fixed mold;

[0009] The movable mold comprises a closed mold state and a split mold state;

[0010] The electric push rod drives the movable mold and the fixed mold to close in the closing stage. During the closing process, the movable mold forces the locking member to release the locking of the fixed mold, and the pressing mechanism can be driven to retract into the fixed mold in a force storage manner. Subsequently, the motor can drive the movable mold and the fixed mold to rotate.

[0011] The electric push rod drives the movable mold and the fixed mold to separate in the separating stage. At this time, the movable mold drives the locking member to lock the fixed mold, the pressing mechanism pushes the workpiece in the fixed mold into the movable mold, and then the pressing mechanism sprays the demolding agent into the fixed mold. Subsequently, the demolding mechanism demolds the workpiece and sprays the demolding agent into the movable mold.

[0012] Preferably, the outer side of the motor is fixedly connected with a moving plate, the moving plate is slidingly connected with the fixed frame, the moving plate is fixedly connected with the output shaft of the electric push rod, the inner side of the moving plate is rotatably connected with a rotating drum, the movable mold is fixedly connected with the rotating drum, the rotating drum is fixedly connected with a worm gear, the outer side of the worm gear is engaged with a worm, the worm is rotatably connected with the moving plate, and the worm is fixedly connected with the output shaft of the motor.

[0013] Preferably, the pressing mechanism comprises a connecting rod, a insertion hole and an inner groove, the connecting rod is fixedly connected with the four corners of the movable mold, the insertion hole is arranged in the four corners of the fixed mold, the inner groove is symmetrically arranged in the fixed mold, a baffle is inserted into the inner groove, the inner side of the baffle is fixedly connected with a connecting pipe, the connecting pipe is circumferentially fixedly connected with a nozzle, the end of the connecting pipe away from the baffle is fixedly connected with a V-shaped plate through the inner groove, the V-shaped plate is fixedly connected with a pressing spring, the end of the pressing spring away from the V-shaped plate is fixedly connected with the fixed mold, the end of the connecting pipe away from the baffle is provided with a connecting rotary joint, the connecting rotary joint is externally connected with a demolding agent conveying pump, the V-shaped plate is provided with a connecting groove, and the connecting rod can be inserted into the connecting groove through the fixed mold and the insertion hole when the connecting rod moves.

[0014] Preferably, the locking member comprises a C-shaped plate, the outer side of the C-shaped plate is fixedly connected with a locking spring, the end of the locking spring away from the C-shaped plate is fixedly connected with the fixed frame, a limiting rod is slidingly connected with the C-shaped plate, and the limiting rod is fixedly connected with the fixed frame.

[0015] Preferably, the locking member further comprises a guide rod and a locking rod, the guide rod is fixedly connected with the movable mold, the locking rod is symmetrically fixedly connected with the C-shaped plate, the outer side of the locking rod is inserted with a fixed plate, the fixed plate is fixedly connected with the upper and lower sides of the fixed mold, the fixed plate is provided with a locking hole, the locking hole is arranged on the fixed plate, and the locking rod is inserted into the locking hole.

[0016] Preferably, the demolding mechanism comprises a groove and an ejector rod, the groove is arranged in the movable mold, a clamping plate is inserted into the inner side of the groove, a plurality of insertion slots are arranged on the circumference of the inner side of the groove, an insertion rod is inserted into the insertion slots, the insertion rod is fixedly connected to the circumference of the clamping plate, and a circular tube is fixedly connected to the side of the clamping plate close to the insertion rod.

[0017] Preferably, a plurality of nozzles are arranged on the circumference of the circular tube, a communication rotary joint is arranged on the end of the circular tube away from the clamping plate, the circular tube is slidably connected to the inner side of the rotating drum, a circular plate is fixedly connected to the circular tube, a demolding spring is fixedly connected to the circular plate, the ejector rod is fixedly connected to the fixing frame, and the ejector rod can extrude the circular plate when the circular plate moves.

[0018] Preferably, a rotating wheel is rotatably connected to the inner side of the fixing frame, the fixed mold is fixedly connected to the rotating wheel, the heat dissipation mechanism comprises movable mold cavities and fixed mold cavities, the movable mold cavities are symmetrically arranged on the inner side of the movable mold and communicate with each other, a water inlet hole is arranged on the outer side of the upper movable mold cavity, and a one-way water outlet insertion tube is fixedly connected to the outer side of the lower movable mold cavity.

[0019] Preferably, the fixed mold cavities are symmetrically arranged in the fixed mold and communicate with each other, a one-way water inlet insertion tube is fixedly connected to the outer side of the upper fixed mold cavity, a water outlet hole is arranged on the outer side of the lower fixed mold cavity, and a one-way water inlet tube and a one-way water outlet tube are further fixedly connected to the upper fixed mold cavity, the one-way water inlet insertion tube can be sealingly inserted into the water inlet hole, and the one-way water outlet insertion tube can be sealingly inserted into the water outlet hole when the movable mold and the fixed mold are closed.

[0020] A wet wax precision casting production process using the thin-walled wax mold described above comprises the following steps:

[0021] S1, the movable mold is driven to move towards the fixed mold by the electric push rod until the molds are closed;

[0022] S2, the movable mold is forced to move to release the locking of the fixed mold by the locking member, and the ejector mechanism is retracted into the fixed mold, at this time, the movable mold and the fixed mold are connected through the ejector mechanism;

[0023] S3, the movable mold and the fixed mold are driven to rotate by the motor;

[0024] S4, the workpiece in the mold is cooled by the heat dissipation mechanism;

[0025] S5, the movable mold and the fixed mold are separated by the electric push rod, and the workpiece in the fixed mold is demolded by the ejector mechanism, and the fixed mold is sprayed with water-based release agent during the separation process;

[0026] S6, the demolding mechanism operates to demold the workpiece in the movable mold, and sprays the water-based demolding agent on the movable mold.

[0027] The.

[0028] Compared with the prior art, the present application provides a large thin-walled wax mold and a wet wax precision casting production process, which has the following beneficial effects:

[0029] 1、The electric push rod drives the movable mold and the fixed mold to close, the movable mold extrudes the pressing mechanism in the process of closing, and the pressing mechanism is compressed into the fixed mold, then wax is injected through the wax injection port, after the workpiece is cooled, the electric push rod drives the movable mold and the fixed mold to separate, in the process of separation, the pressing mechanism can push the workpiece stuck in the fixed mold to the movable mold, then the electric push rod drives the movable mold to continue to separate from the fixed mold, after the movable mold and the fixed mold are completely separated, the pressing mechanism extends out of the fixed mold, then the pressing mechanism sprays the water-based demolding agent into the fixed mold, after the movable mold is separated from the fixed mold, the demolding mechanism in the movable mold can push the workpiece in the movable mold out of the movable mold, so that the demolding and discharging of the workpiece are completed, the demolding mechanism sprays the water-based demolding agent into the movable mold after the workpiece is pushed out of the movable mold, which can demold the workpiece, avoids the workpiece being stuck in the fixed mold, greatly improves the practicality and convenience, and the water-based demolding agent can be sprayed into the fixed mold and the movable mold after the workpiece is demolded, thereby avoiding the problem of manual spraying of the water-based demolding agent, and further improving the practicability.

[0030] 2、When the electric push rod drives the movable mold and the fixed mold to close, the movable mold can drive the pressing mechanism to retract into the fixed mold, at this time, the coaxial connection of the movable mold and the fixed mold is realized, after the mold is closed, the movable mold is driven to rotate by the motor, since the movable mold is connected with the fixed mold at this time, when the movable mold rotates, the movable mold can drive the fixed mold to rotate synchronously, at this time, under the action of centrifugal force, the wax liquid in the movable mold and the fixed mold can uniformly flow through the movable mold and the fixed mold, thereby improving the forming effect and forming quality of the workpiece.

[0031] 3、When the movable mold and the fixed mold are separated, the locking piece can lock the position of the fixed mold, thereby avoiding the rotation of the fixed mold, which causes the subsequent problem that the movable mold cannot be closed with the fixed mold, and when the movable mold and the fixed mold are closed, the movable mold can automatically drive the locking piece to contact and lock the fixed mold, thereby greatly improving the practicability and use convenience. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a first perspective view of the overall structure of the present application;

[0033] Figure 2 It is a second perspective view of the overall structure of the present application;

[0034] Figure 3The overall side sectional view of the present application;

[0035] Figure 4 The first view side sectional view of the movable die structure of the present application;

[0036] Figure 5 The second view side sectional view of the movable die structure of the present application;

[0037] Figure 6 The overall structure of the present application; Figure 5 The enlarged schematic view of the structure at A in the middle;

[0038] Figure 7 The schematic view of the movable die and the fixed die structure of the present application;

[0039] Figure 8 The third view schematic view of the overall structure of the present application;

[0040] Figure 9 The overall structure of the present application; Figure 8 The enlarged schematic view of the structure at B in the middle;

[0041] Figure 10 The schematic view of the top pressing mechanism of the present application;

[0042] Figure 11 The overall structure of the present application; Figure 10 The enlarged schematic view of the structure at C in the middle.

[0043] In the figure:

[0044] 1, fixed frame; 11, rotating wheel;

[0045] 2, electric push rod;

[0046] 3, movable die;

[0047] 4, fixed die;

[0048] 5, demolding mechanism; 51, groove; 52, clamping plate; 53, insertion slot; 54, circular pipe; 55, spray head; 56, communication rotary joint; 57, circular plate; 58, demolding spring; 59, ejector rod; 510, insertion rod;

[0049] 6, top pressing mechanism; 61, connecting rod; 62, insertion hole; 64, inner groove; 65, baffle; 66, connecting pipe; 67, nozzle; 68, V-shaped plate; 69, top pressing spring; 610, connecting rotary joint; 611, connecting groove;

[0050] 7, rotating mechanism; 71, motor; 711, moving plate; 712, rotating cylinder; 713, worm gear; 714, worm; 72, locking member; 721, C-shaped plate; 722, locking spring; 723, limiting rod; 724, guide rod; 725, locking rod; 726, fixed plate; 727, locking hole;

[0051] 8, wax injection port;

[0052] 9, heat dissipation mechanism; 91, movable mold cavity; 92, fixed mold cavity; 93, water inlet hole; 94, one-way water outlet cannula; 95, one-way water inlet cannula; 96, water outlet hole; 97, one-way water inlet pipe; 98, one-way water outlet pipe. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0054] As introduced in the background, the deficiencies in the prior art exist, in order to solve the above technical problems, the present application provides a large thin-walled wax mold and a wet wax precision casting production process.

[0055] Embodiment one: please refer to Figures 1-11 A large thin-walled wax mold, comprising a fixing frame 1, the fixing frame 1 is provided with an electric push rod 2, a movable mold 3 and a fixed mold 4, the movable mold 3 and the fixed mold 4 are provided with a heat dissipation mechanism 9, when wax injection, the electric push rod 2 can drive the movable mold 3 and the fixed mold 4 to close;

[0056] The movable mold 3 is provided with a demolding mechanism 5, which is used for demolding the workpiece in the movable mold 3, and can spray demolding agent on the movable mold 3 after demolding;

[0057] The fixed mold 4 is provided with a top pressure mechanism 6 and a wax injection port 8, the wax injection port 8 is used for injecting wax into the fixed mold 4, and the top pressure mechanism 6 is used for pushing the workpiece in the fixed mold 4 into the movable mold 3, and spraying demolding agent in the fixed mold 4 after pushing;

[0058] The movable mold 3 is also provided with a rotating mechanism 7, the rotating mechanism 7 comprises a motor 71 and a locking part 72, the motor 71 is used for driving the movable mold 3 to rotate, and the locking part 72 is used for locking the fixed mold 4;

[0059] The movable mold 3 comprises a closed mold state and a split mold state;

[0060] In the closed mold stage, the electric push rod 2 drives the movable mold 3 and the fixed mold 4 to close, during the closing process, the movable mold 3 forces the locking part 72 to release the locking of the fixed mold 4, and can drive the top pressure mechanism 6 to retract into the fixed mold 4 in the form of force storage, then the motor 71 can drive the movable mold 3 and the fixed mold 4 to rotate;

[0061] The mold opening stage, the electric push rod 2 drives the movable mold 3 and the fixed mold 4 to open the mold, at this time, the movable mold 3 drives the locking part 72 to lock the fixed mold 4, the pressing mechanism 6 pushes the workpiece in the fixed mold 4 into the movable mold 3, then the pressing mechanism 6 sprays the demolding agent into the fixed mold 4, and then the demolding mechanism 5 demolds the workpiece and sprays the demolding agent into the movable mold 3.

[0062] In the initial state, the locking part 72 locks the position of the fixed mold 4, and at the same time, the pressing mechanism 6 is in the state of extending out of the fixed mold 4, in use, the movable mold 3 is driven to close the mold with the fixed mold 4 by the electric push rod 2, in the process of closing the mold, the movable mold 3 extrudes the locking part 72, at this time, the locking part 72 gradually releases the locking of the fixed mold 4, and at the same time, the movable mold 3 moves and extrudes the pressing mechanism 6, at this time, the pressing mechanism 6 gradually retracts into the fixed mold 4, after the locking part 72 releases the locking of the fixed mold 4, the pressing mechanism 6 is completely retracted into the fixed mold 4, and then the movable mold 3 and the fixed mold 4 are closed, after the mold is closed, the movable mold 3 and the fixed mold 4 are connected through the pressing mechanism 6, then the wax is injected into the mold through the wax injection port 8, after the wax injection is completed, the movable mold 3 is driven to rotate by the motor 71, since the movable mold 3 and the fixed mold 4 are connected together at this time, the movable mold 3 rotates to drive the fixed mold 4 to rotate synchronously, at this time, under the action of centrifugal force, the wax liquid in the movable mold 3 and the fixed mold 4 can uniformly fill every corner of the movable mold 3 and the fixed mold 4, then the workpiece in the mold is cooled by the heat dissipation mechanism 9, when demolding is needed, the movable mold 3 is driven to open the mold with the fixed mold 4 by the electric push rod 2, at this time, the movable mold 3 gradually cancels the extrusion of the pressing mechanism 6, at this time, the pressing mechanism 6 gradually moves to the movable mold 3, when the pressing mechanism 6 moves, the workpiece clamped in the fixed mold 4 is pushed to the movable mold 3, after the movable mold 3 is completely separated from the fixed mold 4, the locking part 72 locks the fixed mold 4 again, and the pressing mechanism 6 extends out of the fixed mold 4, then the water-based demolding agent is sprayed into the fixed mold 4, after the movable mold 3 and the fixed mold 4 are separated, the electric push rod 2 continues to drive the movable mold 3 to move, then the demolding mechanism 5 in the movable mold 3 operates, the workpiece in the movable mold 3 is pushed out of the movable mold 3 by the operation of the demolding mechanism 5, then the workpiece is demolded, after the demolding mechanism 5 completely pushes the workpiece out of the movable mold 3, the demolding mechanism 5 sprays the water-based demolding agent into the movable mold 3, which can automatically demold the workpiece, and also can spray the water-based demolding agent into the fixed mold 4 and the movable mold 3 after demolding, which can avoid the workpiece being clamped in the fixed mold 4, and also can drive the movable mold 3 and the fixed mold 4 to rotate after the mold is closed, so that the wax liquid can uniformly fill every corner of the mold under the action of centrifugal force, thereby improving the effect of the workpiece after forming, and the locking part 72 can lock the position of the fixed mold 4, which can avoid the position of the fixed mold 4 being deviated after the movable mold 3 is separated from the fixed mold 4, thereby causing the movable mold 3 to be unable to close the mold with the fixed mold 4 subsequently.

[0063] Example two: refer to Figures 1-11Different from the first embodiment, the inner side of the fixed frame 1 is rotationally connected with a rotating wheel 11, the fixed die 4 is fixedly connected on the rotating wheel 11, the outer side of the motor 71 is fixedly connected with a moving plate 711, the moving plate 711 is slidingly connected on the fixed frame 1, the moving plate 711 is fixedly connected with the output shaft of the electric push rod 2, the inner side of the moving plate 711 is rotationally connected with a rotating cylinder 712, the movable die 3 is fixedly connected on the rotating cylinder 712, the rotating cylinder 712 is fixedly connected with a worm wheel 713, the outer side of the worm wheel 713 is engaged with a worm 714, the worm 714 is rotationally connected on the moving plate 711, and the worm 714 is fixedly connected with the output shaft of the motor 71, the top pressing mechanism 6 comprises a connecting rod 61, a insertion hole 62 and an inner groove 64, the connecting rod 61 is fixedly connected on the four corners of the movable die 3, the insertion hole 62 is opened on the four corners of the fixed die 4, the inner groove 64 is symmetrically opened in the fixed die 4, the inner groove 64 is inserted with a baffle 65, the inner side of the baffle 65 is fixedly connected with a connecting pipe 66, the connecting pipe 66 is circumferentially fixedly connected with a nozzle 67, the end of the connecting pipe 66 away from the baffle 65 is fixedly connected with a V-shaped plate 68 through the inner groove 64, the V-shaped plate 68 is fixedly connected with a top pressing spring 69, the end of the top pressing spring 69 away from the V-shaped plate 68 is fixedly connected on the fixed die 4, the end of the connecting pipe 66 away from the baffle 65 is provided with a connecting rotary joint 610, the connecting rotary joint 610 is externally connected with a release agent delivery pump, the V-shaped plate 68 is opened with a connecting groove 611, when the connecting rod 61 moves, it can pass through the fixed die 4, the insertion hole 62 and be inserted into the connecting groove 611;

[0064] The driving moving plate 711 is moved along the fixed frame 1 by the electric push rod 2, the moving plate 711 moves the rotating drum 712, the movable mold 3, the motor 71 and the worm 714, the movable mold 3 moves the connecting rod 61, the connecting rod 61 is inserted into the insertion hole 62 and moves to the connecting groove 611, then the connecting rod 61 is inserted into the connecting groove 611 with the movement of the movable mold 3, the connecting rod 61 drives the connecting groove 611 to move with the movement of the movable mold 3, the connecting groove 611 moves the V-shaped plate 68 and the connecting pipe 66, the V-shaped plate 68 is stretched to pull the compression spring 69, the connecting pipe 66 moves the baffle 65 and the nozzle 67 to the inner groove 64, after the movable mold 3 and the fixed mold 4 are combined, the baffle 65 is inserted into the inner groove 64 by the connecting pipe 66, at this time the movable mold 3 and the fixed mold 4 are connected through the connecting rod 61 and the V-shaped plate 68, then the worm 714 is rotated by the motor 71, the worm 714 rotates the worm wheel 713, the worm wheel 713 rotates the rotating drum 712, the rotating drum 712 rotates the movable mold 3, the movable mold 3 rotates the fixed mold 4 through the connecting rod 61, the V-shaped plate 68 and the rotating wheel 11, then the movable mold 3 and the fixed mold 4 are separated by the electric push rod 2 after the workpiece is formed, at this time the connecting rod 61 gradually moves out of the insertion hole 62 and the connecting groove 611, at this time the V-shaped plate 68 and the connecting pipe 66 gradually stretch out of the inner groove 64 under the cooperation of the compression spring 69, at this time the baffle 65 can demold the workpiece clamped in the fixed mold 4 and push it to the movable mold 3, after the movable mold 3 is completely separated from the fixed mold 4, the nozzle 67 on the connecting pipe 66 also stretches out of the inner groove 64, at this time the nozzle 67 can spray water-based release agent into the fixed mold 4.

[0065] Need to be explained is that after the nozzle 67 completely stretches out of the fixed mold 4, the water-based release agent conveying pump connected with the rotary joint 610 can drive the nozzle 67 to perform a spraying action.

[0066] Example three, refer to Figures 1-11 Different from the above-mentioned example two, the locking part 72 comprises a C-shaped plate 721, the outer side of the C-shaped plate 721 is fixedly connected with a locking spring 722, the end of the locking spring 722 away from the C-shaped plate 721 is fixedly connected on the fixed frame 1, a limiting rod 723 is slidingly connected on the C-shaped plate 721, the limiting rod 723 is fixedly connected on the fixed frame 1, the locking part 72 further comprises a guide rod 724 and a locking rod 725, the guide rod 724 is fixedly connected on the movable mold 3, the locking rod 725 is fixedly connected on the C-shaped plate 721 in a symmetrical manner, a fixed plate 726 is inserted on the outer side of the locking rod 725, the fixed plate 726 is fixedly connected on the upper and lower sides of the fixed mold 4, a locking hole 727 is formed on the fixed plate 726, the locking rod 725 is inserted into the locking hole 727;

[0067] When the electric push rod 2 drives the movable mold 3 to move towards the fixed mold 4, the guide rod 724 moves with the movable mold 3, the guide rod 724 moves to contact the C-shaped plate 721, and with the movement of the movable mold 3, the guide rod 724 extrudes the C-shaped plate 721, the C-shaped plate 721 moves along the limiting rod 723, the C-shaped plate 721 moves to extrude the locking spring 722, and drives the locking rod 725 to move, the locking rod 725 gradually moves out of the locking hole 727 on the fixed plate 726, and when the locking rod 725 is completely separated from the locking hole 727, the locking rod 725 is unlocked from the fixed mold 4. When the mold is separated, the electric push rod 2 drives the movable mold 3 to separate from the fixed mold 4, and at this time the guide rod 724 gradually separates from the C-shaped plate 721, and at this time the C-shaped plate 721 gradually returns to the original position under the action of the locking spring 722, and at this time the locking rod 725 is gradually moved to the locking hole 727 on the fixed plate 726, and after the movable mold 3 is completely separated from the fixed mold 4, the locking rod 725 on the C-shaped plate 721 is inserted into the locking hole 727 again, and at this time the fixed mold 4 is locked.

[0068] Embodiment four, see Figures 1-11 Different from the above-mentioned embodiment three, the demolding mechanism 5 comprises a groove 51 and a top rod 59, the groove 51 is arranged in the movable mold 3, the groove 51 is inserted with a clamping plate 52 on the inner side, a plurality of insertion slots 53 are arranged on the inner side of the groove 51, an insertion rod 510 is inserted in the insertion slot 53, the insertion rod 510 is fixedly connected on the clamping plate 52, a circular tube 54 is fixedly connected on one side of the clamping plate 52 close to the insertion rod 510, a plurality of nozzles 55 are distributed on the circular tube 54, the circular tube 54 is slidably connected in the inner side of the rotating drum 712, the circular tube 54 is fixedly connected with a circular plate 57, the demolding spring 58 is fixedly connected on the circular plate 57, and the top rod 59 is fixedly connected on the fixed frame 1, and when the circular plate 57 moves, the top rod 59 can extrude the circular plate 57;

[0069] In the initial state, the circular tube 54 and the nozzle 55 are in the groove 51, and the clamping plate 52 is inserted in the insertion slot 53, and when demolding, the electric push rod 2 drives the movable mold 3 to move towards the top rod 59, and then the circular plate 57 on the outer side of the circular tube 54 contacts the top rod 59, with the movement of the movable mold 3, the top rod 59 extrudes the circular plate 57, and at this time the circular plate 57 moves towards the fixed mold 4, the circular plate 57 moves to extrude the demolding spring 58, and drives the circular tube 54, the clamping plate 52 and the nozzle 55 to move, and then the clamping plate 52 pushes the workpiece in the movable mold 3, so as to demold the workpiece in the movable mold 3, and with the gradual movement of the clamping plate 52, the nozzle 55 on the circular tube 54 moves out of the groove 51, and then the nozzle 55 sprays water-based demolding agent into the movable mold 3.

[0070] Need to explain, the circular tube 54 through the communication rotating joint 56 outside the water-based release agent delivery pump, and, after the nozzle 55 moves out of the groove 51, the water-based release agent delivery pump can drive the nozzle 55 to spray once.

[0071] Embodiment five, see Figures 1-11 , unlike the above embodiment four, the heat dissipation mechanism 9 includes the dynamic mode cavity 91 and the fixed mode cavity 92, the dynamic mode cavity 91 is symmetrically opened in the inside of the dynamic mode 3, and the dynamic mode cavity 91 is communicated between, the upper dynamic mode cavity 91 is provided with water inlet hole 93 outside, the lower dynamic mode cavity 91 is fixedly connected with one-way water outlet pipe 94 outside, the fixed mode cavity 92 is symmetrically opened in the fixed mode 4, and the fixed mode cavity 92 is communicated between, the upper fixed mode cavity 92 is fixedly connected with one-way water inlet pipe 95 outside, the lower fixed mode cavity 92 is provided with water outlet hole 96 outside, the upper fixed mode cavity 92 is further fixedly connected with one-way water inlet pipe 97 and one-way water outlet pipe 98, the dynamic mode 3 and the fixed mode 4 are closed, the one-way water inlet pipe 95 can be sealed into the water inlet hole 93, and the one-way water outlet pipe 94 can be sealed into the water outlet hole 96;

[0072] After the dynamic mode 3 and the fixed mode 4 are closed, the dynamic mode 3 and the fixed mode 4 are driven to rotate through the rotating mechanism 7, then the external cooling pipe is connected with the one-way water inlet pipe 97 and the one-way water outlet pipe 98 respectively, then the one-way water inlet pipe 97 transports external cooling water to the fixed mode cavity 92, then enters the water inlet hole 93 through the one-way water inlet pipe 95, then enters the dynamic mode cavity 91, then enters the one-way water outlet pipe 94 through the water outlet hole 96, then flows back into the fixed mode cavity 92, then is discharged through the cooling pipe, when the cooling water enters the dynamic mode cavity 91 and the fixed mode cavity 92, the workpiece in the dynamic mode 3 and the fixed mode 4 can be cooled.

[0073] A wet wax precision casting production process using the thin-walled wax mold described above, comprising the following steps:

[0074] S1, the dynamic mode 3 is driven to move to the fixed mode 4 by the electric push rod 2, until the mold is closed;

[0075] S2, the dynamic mode 3 is moved to force the locking member 72 to release the locking of the fixed mode 4, and the pressing mechanism 6 is extruded to retract into the fixed mode 4, at this time, the dynamic mode 3 and the fixed mode 4 are connected through the pressing mechanism 6;

[0076] S3, the dynamic mode 3 and the fixed mode 4 are driven to rotate by the motor 71;

[0077] S4, the workpiece in the mold is cooled by the heat dissipation mechanism 9;

[0078] S5, the dynamic mode 3 and the fixed mode 4 are separated by the electric push rod 2, during the separation process, the workpiece in the fixed mode 4 is demolded by the pressing mechanism 6, and the fixed mode 4 is sprayed with water-based release agent;

[0079] S6, the demolding mechanism 5 operates to demold the workpiece in the movable mold 3 and spray water-based demolding agent on the movable mold 3.

[0080] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous further modifications and changes can be apparent to one skilled in the art without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A large thin-walled wax pattern comprising a mounting fixture, characterized by: The fixed frame is provided with an electric push rod, a movable mold and a fixed mold, the movable mold and the fixed mold are provided with heat dissipation mechanisms, and the electric push rod can drive the movable mold to combine with the fixed mold during wax injection; The movable mold is provided with an ejection mechanism, which is used for ejecting the workpiece in the movable mold and spraying release agent into the movable mold after ejection; The fixed mold is provided with a top pressing mechanism and a wax injection port, the wax injection port is used for injecting wax into the fixed mold, and the top pressing mechanism is used for pushing the workpiece in the fixed mold into the movable mold and spraying release agent into the fixed mold after pushing; The movable mold is also provided with a rotating mechanism, the rotating mechanism includes a motor and a locking piece, the motor is used for driving the movable mold to rotate, and the locking piece is used for locking the fixed mold; The movable mold includes a combined mold state and a split mold state; In the combined mold stage, the electric push rod drives the movable mold to combine with the fixed mold, the movable mold forces the locking piece to release the locking of the fixed mold during the combination process, and the top pressing mechanism is driven to retract into the fixed mold in a force storage manner, then the motor drives the movable mold and the fixed mold to rotate; In the split mold stage, the electric push rod drives the movable mold to split with the fixed mold, at this time, the movable mold drives the locking piece to lock the fixed mold, the top pressing mechanism pushes the workpiece in the fixed mold into the movable mold, then the top pressing mechanism sprays release agent into the fixed mold, after that, the ejection mechanism ejects the workpiece and sprays release agent into the movable mold.

2. A large thin-walled wax pattern according to claim 1, wherein: The motor is fixedly connected with a moving plate on the outside, the moving plate is slidingly connected to the fixed frame, the moving plate is fixedly connected with the output shaft of the electric push rod, the inside of the moving plate is rotatably connected with a rotating drum, the movable mold is fixedly connected to the rotating drum, a worm gear is fixedly connected to the rotating drum, the outside of the worm gear is engaged with a worm, the worm is rotatably connected to the moving plate, and the worm is fixedly connected to the output shaft of the motor.

3. A large thin-walled wax pattern according to claim 1, wherein: The top pressing mechanism includes a connecting rod, a insertion hole and an inner groove, the connecting rod is fixedly connected to the four corners of the movable mold, the insertion hole is formed in the four corners of the fixed mold, the inner groove is symmetrically formed in the fixed mold, a baffle is inserted into the inner groove, a connecting pipe is fixedly connected to the inside of the baffle, a nozzle is fixedly connected to the connecting pipe in a circumferential manner, a V-shaped plate is fixedly connected to the end of the connecting pipe away from the baffle through the inner groove, a top pressing spring is fixedly connected to the V-shaped plate, the end of the top pressing spring away from the V-shaped plate is fixedly connected to the fixed mold, a connecting rotary joint is arranged at the end of the connecting pipe away from the baffle, the connecting rotary joint is connected with a release agent conveying pump, a connecting groove is formed in the V-shaped plate, and the connecting rod can pass through the fixed mold, the insertion hole and the connecting groove when moving.

4. A large thin-walled wax pattern according to claim 1 wherein: The locking piece includes a C-shaped plate, a locking spring is fixedly connected to the outside of the C-shaped plate, the end of the locking spring away from the C-shaped plate is fixedly connected to the fixed frame, a limiting rod is slidingly connected to the C-shaped plate, and the limiting rod is fixedly connected to the fixed frame.

5. A large thin-walled wax pattern according to claim 4, wherein: The locking piece further comprises a guide rod and a locking rod, the guide rod is fixedly connected to the movable mold, the locking rod is fixedly connected to the C-shaped plate symmetrically, a fixing plate is inserted to the outer side of the locking rod, the fixing plate is fixedly connected to the upper and lower sides of the fixed mold, a locking hole is formed in the fixing plate, the locking hole is formed in the fixing plate, and the locking rod is inserted into the locking hole.

6. A large thin-walled wax pattern according to claim 2 wherein: The demolding mechanism comprises a groove and an ejector rod, the groove is formed in the movable mold, a clamping plate is inserted into the inner side of the groove, a plurality of insertion grooves are formed in the inner side of the groove, an insertion rod is inserted into the insertion groove, the insertion rod is fixedly connected to the clamping plate in a circumferential manner, and a circular tube is fixedly connected to one side of the clamping plate close to the insertion rod.

7. A large thin-walled wax pattern according to claim 6 wherein: A plurality of nozzles are circumferentially distributed on the circular tube, a communication rotary joint is arranged on the end of the circular tube away from the clamping plate, the circular tube is slidably connected to the inner side of the rotating drum, a circular plate is fixedly connected to the circular tube, a demolding spring is fixedly connected to the circular plate, the ejector rod is fixedly connected to the fixing frame in a circumferential manner, and the ejector rod can extrude the circular plate when the circular plate moves.

8. A large thin-walled wax pattern according to claim 1 wherein: A rotating wheel is rotatably connected to the inner side of the fixing frame, the fixed mold is fixedly connected to the rotating wheel, the heat dissipation mechanism comprises movable mold cavities and fixed mold cavities, the movable mold cavities are symmetrically formed in the inner side of the movable mold, the movable mold cavities are communicated with each other, a water inlet hole is formed in the outer side of the upper movable mold cavity, and a one-way water outlet insertion tube is fixedly connected to the outer side of the lower movable mold cavity.

9. A large thin-walled wax pattern according to claim 8, wherein: The fixed mold cavities are symmetrically formed in the fixed mold and communicated with each other, a one-way water inlet insertion tube is fixedly connected to the outer side of the upper fixed mold cavity, a water outlet hole is formed in the outer side of the lower fixed mold cavity, and a one-way water inlet pipe and a one-way water outlet pipe are further fixedly connected to the upper fixed mold cavity, the one-way water inlet insertion tube can be sealingly inserted into the water inlet hole, and the one-way water outlet insertion tube can be sealingly inserted into the water outlet hole when the movable mold and the fixed mold are closed.

10. A process for the precision investment casting of wet wax, using a thin-walled wax pattern according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1, driving the movable mold to move towards the fixed mold by the electric push rod until the molds are closed; S2, the movable mold moves to force the locking piece to release the locking of the fixed mold, and the pressing mechanism is retracted into the fixed mold, at this time, the movable mold and the fixed mold are connected through the pressing mechanism; S3, driving the movable mold and the fixed mold to rotate by the motor; S4, dissipating heat from the workpiece in the mold by the heat dissipation mechanism; S5, driving the movable mold and the fixed mold to separate by the electric push rod, in the process of separation, the pressing mechanism demolds the workpiece in the fixed mold and sprays water-based release agent on the fixed mold; S6, the demolding mechanism operates to demold the workpiece in the movable mold and sprays water-based release agent on the movable mold.

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