A wax press for precision investment casting

Abstract

The application relates to the technical field of precision casting, and discloses a wax pressing machine for investment precision casting, which comprises a platform, the outer wall of the platform is provided with a mounting space, a telescopic mechanism is mounted on the outer wall of the platform, and a discharging mechanism is mounted on the inner wall of the platform; when the baffle one and the sliding groove block move, the solidified wax liquid is lifted, and the wax block is crushed in the movement process of the assembly, so that when the moving plate two moves outward, a channel is extruded, hot wax entering from the feeding port flows down from the channel to the notch on the baffle one and then flows to the lower end into the mold, the solidified wax liquid moves upwards to crush the wax block and open the channel connected with the feeding port, and the hot wax enters the equipment interior through the feeding port and reaches the mold, so that when the machine directly starts to work, the hot wax cannot directly reach the machine interior and cannot directly enter the mold, the internal wax liquid is difficult to clean after being solidified, and the melting time is long.

Description

Technical Field

[0001] This invention relates to the field of precision casting technology, and in particular to a wax pressing machine for investment casting. Background Technology

[0002] Precision casting is a special casting method compared to traditional casting processes. It can obtain relatively accurate shapes and high casting precision. The process involves designing and manufacturing molds according to product requirements, casting wax using a pouring method to obtain the original wax model, repeating the coating and sanding processes on the wax model, hardening the shell, and drying it, then melting away the inner wax model (dewaxing) to obtain the cavity, firing the shell to obtain sufficient strength and permeability, pouring in the required metal material, and finally removing the sand after dewaxing to achieve high precision.

[0003] In most wax pressing machines, after a long period of inactivity, the residual wax inside solidifies. Due to the special storage location of the wax and the semi-enclosed space inside the machine, it is difficult to clean, resulting in a lot of time being spent cleaning when the machine is used again. This invention proposes the following solution to the above problems. Summary of the Invention

[0004] To solve the above-mentioned technical problems, a wax pressing machine for investment casting is provided, including a sliding rod, and further comprising:

[0005] The platform has installation space on its outer wall;

[0006] Telescopic mechanism, which is installed on the outer wall of the platform;

[0007] The material feeding mechanism is installed on the inner wall of the platform.

[0008] Before operating the equipment, connect the pneumatic telescopic mechanism to the air pump, and connect the feed inlet to the corresponding pipe to allow the wax liquid at around 50 or 90 degrees Celsius to enter the equipment. Turn on the air pump to make the pneumatic telescopic mechanism push the pneumatic telescopic rod downward.

[0009] Preferred platforms include:

[0010] The press assembly, which is fixedly connected to the outer wall of the platform via press components, is used to provide basic power.

[0011] The press components include a sliding rod that is fixedly connected to the outer wall of the platform, a top plate that is fixedly connected to the outer wall of the sliding rod, and a pneumatic telescopic mechanism that is fixedly connected to the top of the top plate.

[0012] The movable component is fixedly connected to the outer wall of the press assembly via a movable part, providing a basic mechanical component for vertical movement;

[0013] The moving part includes a pneumatic telescopic rod that is fixedly connected to the bottom of the pneumatic telescopic machine.

[0014] Preferably, the telescopic mechanism includes:

[0015] The reset component is fixedly connected to the inner wall of the movable component via a reset element, providing reset kinetic energy;

[0016] The reset component includes a spring telescopic rod fixedly connected to the inner wall of the pneumatic telescopic rod, a movable plate fixedly connected to the bottom of the spring telescopic rod, and a top rod fixedly connected to the bottom of the movable plate.

[0017] The opening and closing assembly is fixedly connected to the inner wall of the reset assembly via an opening and closing component, providing opening and closing space;

[0018] The opening and closing mechanism includes a partition plate fixedly connected to the inner wall of the pneumatic telescopic rod, and a partition plate is fixedly connected to the outer wall of the top rod.

[0019] Preferably, the feeding mechanism includes:

[0020] The groove assembly has its sidewall fixedly connected to the outer wall of the reset assembly.

[0021] A switch assembly, the outer wall of which is fixedly connected to the outer wall of the groove assembly.

[0022] Preferably, the press assembly includes a cabinet fixedly connected to the bottom of the platform.

[0023] Preferably, the moving component includes a pressure plate fixedly connected to the bottom of the pneumatic telescopic rod, a feed port fixedly connected to the outer wall of the pneumatic telescopic rod, and the inner wall of the pressure plate slidably connected to the outer wall of the sliding rod.

[0024] Preferably, the reset assembly includes a fixed ring fixedly connected to the inner wall of the pneumatic telescopic mechanism. A fan blade is rotatably connected to the outer wall of the fixed ring. A threaded groove is formed on the outer wall of the push rod. The inner wall of the fixed ring is slidably connected to the outer wall of the push rod. The inner wall of the fan blade is engaged with the outer wall of the threaded groove. Utilizing the relative movement characteristic of the push rod, when the pressure plate is fully pressed onto the mold, due to the spring telescopic rod, the top of the push rod retracts into the inner wall of the pressure plate. The corresponding excess portion will change the structural distribution of the push rod inside the pneumatic telescopic rod. The push rod drives the moving plate to move upward, leaving extra space for breaking the wax block inside. The partition pushes the wax upward. As the wax block moves upward, it breaks due to its low hardness. The threaded groove on the push rod causes the fan blades to rotate slightly. When the partition moves the wax block upward to this point, the rotating fan blades will break up some of the wax block. Through the above components, when the hot wax enters the machine, the broken wax blocks enter the internal space and melt through the heat of the hot wax itself. This prevents unmelted wax blocks from entering the mold and forming patterns that reduce the mold's molding precision. At the same time, because the injected hot wax is at a high temperature, it prevents the fan blade surface from contacting the hot wax surface, which would cause the wax on the fan blade surface to lose temperature and stick.

[0025] Preferably, the opening and closing assembly includes a linkage plate rotatably connected to a partition plate one, a movable plate two rotatably connected to the end of the linkage plate away from the partition plate one, a sliding block fixedly connected to the inner wall of the partition plate, and the side wall of the movable plate two engaging with the sliding block. The outer wall of the opening and closing assembly has a slot. Before the equipment operates, the pneumatic telescopic mechanism is connected to the air pump, and the feed inlet is connected to the corresponding pipe, allowing wax at approximately 50 or 90 degrees Celsius to enter the equipment. The air pump is turned on, causing the pneumatic telescopic mechanism to push the pneumatic telescopic rod downwards, causing the push rod to press against the bottom mold. When the push rod presses against the mold feed inlet, it moves upwards. As the push rod moves upwards, it drives the partition plate one and the linkage plate rotatably connected to the partition plate one. The linkage plate causes the movable plate two, originally attached to the inner wall of the partition plate, to move obliquely upwards along the sliding block. When the machine has not been started for a long time, the interior is filled with solidified wax. The internal components of the pneumatic telescopic rod provide the displacement force. Because the partition plate and the sliding block move downwards, they drive the partition plate one, the partition plate... As the second movable plate moves, the spring telescopic rod retracts when the pneumatic telescopic rod applies force to the top rod, causing the movable plate to move upwards from its position on the inner wall of the pneumatic telescopic rod. This provides more space for the solidified wax to move. When the first partition plate and the sliding block move, they lift the solidified wax. Because the wax block has a low density, it will be crushed during the component movement. As the second movable plate moves outwards, it will squeeze out a channel, allowing the hot wax entering from the feed port to flow downwards through the channel and then through the slot on the first partition plate into the mold. Through the above components, the solidified wax moves upwards, breaking up the wax block and creating a channel connected to the feed port, allowing the hot wax to enter the equipment and reach the mold. The machine can start working directly after startup, avoiding the problem that the hot wax cannot directly reach the inside of the machine and enter the mold when the machine starts working directly, thus avoiding the problems of difficult cleaning and long melting time after the wax solidifies inside.

[0026] Preferably, the groove assembly includes a material discharge space at the bottom of the top rod, with a connection port at the top of the material discharge space. A connecting rod is fixedly connected to the inner wall of the pneumatic telescopic rod, and the outer wall of the connecting rod is slidably connected to the inner wall of the top rod. Utilizing the characteristic of the changing size of the internal space of the equipment, when the pneumatic telescopic rod moves, the top rod drives the fan blades to rotate slightly inside. When the pneumatic telescopic rod moves upward, it drives the moving plate to move upward. During this process, a brief gap occurs, causing the liquid to flow and tumble. This flow causes the bubbles to be subjected to shear force, and the liquid film on the surface of the bubbles is stretched and thinned, eventually rupturing. The tiny foam particles float on the top and adhere to the bottom of the moving plate in the vortex driven by the rotation of the fan blades. After the wax injection is completed, the moving plate is reset under the action of the spring telescopic rod, causing the excess bubbles to dissipate during the reset process due to increased pressure.

[0027] Preferably, the switching assembly includes a fixed rod fixedly connected to the outer wall of the connecting rod, a sealing plate fixedly connected to the end of the fixed rod away from the connecting rod, the outer wall of the sealing plate slidably connected to the inner wall of the feeding space, and the connecting rod fixedly connected inside the top plate. Due to the movement characteristics during the aforementioned movement, the connecting rod is slidably connected inside the top plate. When the push rod is displaced, the connecting rod is fixed to the pressure plate and will not move. The lower end of the connecting rod is fixedly connected to the fixed rod, and the lower end of the fixed rod is fixedly connected to the sealing plate. When the bottom end of the push rod abuts against the mold inlet, it moves upwards, the sealing plate remains stationary, and it will reach a certain distance inside the mold inlet. The push rod will remain at the mold opening because its top is in contact with the mold inlet, thus offsetting from the sealing plate and allowing the wax to enter the mold. After the work is completed, the pressure plate moves upwards, causing the push rod to return to its downward movement and re-engage with the sealing plate to prevent hot wax from dripping and forming wax blocks that adhere to the machine opening, affecting the clamping of the push rod and the mold opening, easily causing gaps, leading to reduced pressure and affecting mold accuracy.

[0028] The present invention has the following beneficial effects:

[0029] (1) When the machine has not been started for a long time, the interior is filled with solidified wax. The internal components of the pneumatic telescopic rod provide displacement force. As the partition and the sliding block move downward, they drive the first partition and the second partition moving plate to move. At the same time, when the force applied by the pneumatic telescopic rod to the top rod causes the spring telescopic rod to contract, the position of the moving plate on the inner wall of the pneumatic telescopic rod moves upward, providing extra space for moving the solidified wax. When the first partition and the sliding block move, they will lift the solidified wax. Because the density of the wax block is not high, it will be crushed during the movement of the components, thus... When the second moving plate moves outward, it will squeeze out a channel, allowing the hot wax entering from the feed port to flow down through the channel and then through the slot on the first partition plate to enter the mold at the lower end. Through the above components, the solidified wax moves upward, breaking up the wax blocks and opening up a channel connected to the feed port, allowing the hot wax to enter the equipment through the feed port and reach the mold. The machine can start working directly after it is turned on, avoiding the problem that the hot wax cannot directly reach the inside of the machine and cannot directly enter the mold when the machine starts working directly, thus avoiding the problems of difficult cleaning and long melting time after the wax solidifies inside.

[0030] (2) This invention utilizes the characteristic of relative movement of the push rod. When the pressure plate is completely pressed on the mold, due to the spring telescopic rod, the top of the push rod is retracted into the inner wall of the pressure plate. The corresponding extra part will cause the structural distribution of the push rod inside the pneumatic telescopic rod to change. The push rod drives the moving plate to move upward, leaving extra space for the broken wax blocks inside. The partition pushes the wax blocks upward. During the movement, the wax blocks will break due to their low hardness. The threaded groove on the push rod will drive the fan blade to rotate slightly. When the partition pushes the wax blocks upward to this point, the rotating fan blade will crush some of the wax blocks. Through the above components, when hot wax enters the machine, because the gaps in the broken wax blocks enter the internal space, the heat of the hot wax itself spreads through the gaps in the crushed wax blocks and melts faster, avoiding the problem of some unmelted wax blocks entering the mold and forming textures that reduce the molding accuracy of the mold. At the same time, because the injected hot wax is at a high temperature, it avoids the fan blade surface from contacting the hot wax surface, causing the wax on the fan blade surface to lose temperature and form adhesion.

[0031] (3) This invention utilizes the characteristic of the change in the size of the internal space of the equipment. When the pneumatic telescopic rod moves, the top rod will drive the fan blade to rotate slightly inside. When the pneumatic telescopic rod moves upward, it will drive the moving plate to move upward. During this process, there is a brief gap, which causes the liquid to flow and roll. This flow will cause the bubbles to be subjected to shear force. The liquid film on the surface of the bubbles will be stretched and thinned, and then ruptured. The tiny foams will float on the top and stick to the bottom of the moving plate in the vortex driven by the rotation of the fan blade. After the wax liquid is injected, the moving plate will be reset under the action of the spring telescopic rod, so that the excess bubbles will dissipate during the reset process due to the increased pressure.

[0032] (4) Due to the characteristics of movement during the above-mentioned movement, the top plate is internally connected to a connecting rod. When the push rod is displaced, the connecting rod is fixed on the pressure plate and will not move. The lower end of the connecting rod is fixedly connected to the fixing rod, and the lower end of the fixing rod is fixedly connected to the sealing plate. When the bottom end of the push rod touches the mold inlet, it moves upward and the sealing plate remains stationary. It will reach a certain distance inside the mold inlet, while the push rod will stay at the mold opening because its top is in contact with the mold inlet, thus offsetting from the sealing plate and allowing the wax liquid to enter the mold. When the work is finished, the pressure plate moves upward and the push rod returns to moving downward, re-engaging with the sealing plate to prevent hot wax from dripping and forming wax blocks that stick to the machine opening, affecting the pressing of the push rod when it is connected to the mold opening, easily causing gaps, resulting in reduced pressure and affecting the mold accuracy. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a cross-sectional view of the overall structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the overall invention;

[0036] Figure 3 This is a schematic diagram of the telescopic mechanism of the present invention;

[0037] Figure 4 This is a schematic diagram of the internal structure of the opening and closing component of the present invention;

[0038] Figure 5 This is a schematic diagram of the opening and closing component of the present invention;

[0039] Figure 6 For the present invention Figure 4 Enlarged diagram of A in the middle;

[0040] Figure 7 This is a schematic diagram of the internal cross-section of the overall structure of the present invention;

[0041] Figure 8 For the present invention Figure 7 Enlarged diagram of B in the diagram;

[0042] Figure 9 This is an enlarged schematic diagram of C in this invention 7.

[0043] The attached diagram lists the components represented by each number as follows:

[0044] In the diagram: 1. Platform; 11. Press assembly; 12. Moving assembly; 111. Sliding rod; 112. Top plate; 113. Pneumatic telescopic mechanism; 121. Pneumatic telescopic rod; 122. Pressure plate; 123. Feed inlet; 114. Cabinet; 2. Telescopic mechanism; 21. Reset assembly; 22. Opening and closing assembly; 212. Spring telescopic rod; 213. Moving plate; 214. Top rod; 215. Thread; 216. Fixing ring; 217. Fan blade; 221. Partition; 222. Partition one; 223. Slide block; 224. Moving plate two; 225. Linkage plate; 226. Groove; 3. Discharge mechanism; 31. Groove assembly; 32. Switch assembly; 311. Discharge space; 312. Connection port; 313. Connecting rod one; 321. Fixing rod one; 322. Enclosing plate. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Example 1, please refer to Figure 1 - Figure 7 The present invention provides a wax pressing machine for investment casting precision casting, including a sliding rod 111, and further comprising:

[0047] Platform 1, with installation space provided on its outer wall;

[0048] Telescopic mechanism 2 is installed on the outer wall of platform 1;

[0049] The material feeding mechanism 3 is installed on the inner wall of the platform 1.

[0050] Platform 1 includes:

[0051] Press assembly 11 is fixedly connected to the outer wall of platform 1 via press components and is used to provide basic power;

[0052] The press component includes a sliding rod 111 fixedly connected to the outer wall of the platform 1, a top plate 112 fixedly connected to the outer wall of the sliding rod 111, and a pneumatic telescopic mechanism 113 fixedly connected to the top of the top plate 112.

[0053] The movable component 12 is fixedly connected to the outer wall of the press assembly 11 via a movable part, providing a basic mechanical component for vertical movement;

[0054] The moving part includes a pneumatic telescopic rod 121 that is fixedly connected to the bottom of the pneumatic telescopic mechanism 113.

[0055] Telescopic mechanism 2 includes:

[0056] The reset component 21 is fixedly connected to the inner wall of the movable component 12 via a reset element, providing reset kinetic energy;

[0057] The reset component includes a spring telescopic rod 212 fixedly connected to the inner wall of the pneumatic telescopic rod 121, a movable plate 213 fixedly connected to the bottom of the spring telescopic rod 212, and a top rod 214 fixedly connected to the bottom of the movable plate 213.

[0058] The opening and closing component 22 is fixedly connected to the inner wall of the reset component 21 via an opening and closing part, providing opening and closing space;

[0059] The opening and closing mechanism includes a partition 221 fixedly connected to the inner wall of the pneumatic telescopic rod 121, and a partition 222 fixedly connected to the outer wall of the top rod 214.

[0060] The feeding mechanism 3 includes:

[0061] The groove assembly 31 has its sidewall fixedly connected to the outer wall of the reset assembly 21;

[0062] The outer wall of the switch assembly 32 is fixedly connected to the outer wall of the groove assembly 31.

[0063] The press assembly 11 includes a cabinet 114 fixedly connected to the bottom of the platform 1.

[0064] The moving component 12 includes a pressure plate 122 fixedly connected to the bottom of the pneumatic telescopic rod 121. A feed port 123 is fixedly connected to the outer wall of the pneumatic telescopic rod 121. The inner wall of the pressure plate 122 is slidably connected to the outer wall of the sliding rod 111.

[0065] The reset assembly 21 includes a fixed ring 216 fixedly connected to the inner wall of the pneumatic telescopic mechanism 113. A fan blade 217 is rotatably connected to the outer wall of the fixed ring 216. A threaded groove 215 is formed on the outer wall of the push rod 214. The inner wall of the fixed ring 216 is slidably connected to the outer wall of the push rod 214. The inner wall of the fan blade 217 is engaged with the outer wall of the threaded groove 215. Utilizing the relative movement characteristic of the push rod 214, when the pressure plate 122 is fully pressed onto the mold, due to the spring telescopic rod 212, the top end of the push rod 214 retracts into the inner wall of the pressure plate 122. Correspondingly, the excess portion will change the structural distribution of the push rod 214 inside the pneumatic telescopic rod 121. The push rod 214 drives the moving plate 213 to move upward, thus breaking the internal... The wax block leaves extra space, and the partition 222 pushes the wax block upward. During the movement, the wax block breaks due to its low hardness. The threaded groove 215 on the push rod 214 drives the fan blade 217 to rotate slightly. When the partition 222 moves the wax block upward, the rotating fan blade 217 will break up some of the wax block. Through the above components, when the hot wax enters the machine, the heat of the hot wax itself is spread through the gaps in the broken wax block and melts faster. This avoids the problem of some unmelted wax blocks entering the mold and forming patterns that reduce the molding accuracy of the mold. At the same time, because the injected hot wax is at a high temperature, it avoids the surface of the fan blade 217 from contacting the hot wax surface, which would cause the wax on the surface of the fan blade 217 to lose temperature and stick.

[0066] Example 2, please refer to Figure 4 - Figure 9This invention relates to a wax pressing machine for investment casting precision casting. Based on Embodiment 1, the opening and closing assembly 22 includes a linkage plate 225 rotatably connected to a partition plate 222. A movable plate 224 is rotatably connected to the end of the linkage plate 225 away from the partition plate 222. A sliding block 223 is fixedly connected to the inner wall of the partition plate 221. The side wall of the movable plate 224 engages with the sliding block 223. A slot 226 is provided on the outer wall of the opening and closing assembly 22. Before the equipment operates, the pneumatic telescopic mechanism 113 is connected to the air pump, and the feed inlet 123 is connected to the corresponding pipe, allowing wax at approximately 50 or 90 degrees Celsius to enter the equipment. The air pump is then turned on, causing the pneumatic telescopic mechanism 113 to push the pneumatic telescopic rod 121 downwards, thus driving... The ejector rod 214 abuts against the bottom mold. When the ejector rod 214 abuts against the mold inlet, it cannot descend further because it is blocked. The pneumatic telescopic mechanism 113 will cause the pneumatic telescopic rod 121 and the pressure plate 122 to continue to descend until the surface of the pressure plate 122 is pressed against the mold surface. When the ejector rod 214 remains relatively fixed due to the action of the spring telescopic rod 212, the descent of the pneumatic telescopic rod 121 will drive some components fixed on the inner wall of the pneumatic telescopic rod 121. When the partition plate 221 descends with the pneumatic telescopic rod 121, the partition plate 222 and the linkage plate 225 rotatably connected to the partition plate 222 will cause the moving plate that was originally attached to the inner wall of the partition plate 221 to move. As the slide block 223 moves diagonally upward along the second 224, the interior of the machine, filled with solidified wax when it has not been started for a long time, provides displacement force to the internal components of the pneumatic telescopic rod 121 as the push rod 214 presses against the bottom mold and the pneumatic telescopic rod 121 continues to descend. Because the partition 221 and slide block 223 move downward, they drive the first partition 222 and the second partition moving plate 224 to move. Simultaneously, the force applied by the pneumatic telescopic rod 121 to the push rod 214 causes the spring telescopic rod 212 to retract, causing the moving plate 213, located on the inner wall of the pneumatic telescopic rod 121, to move upward, providing extra space for the solidified wax. When the first partition 222 and slide block 223 move, they lift the solidified wax. Because the density of the wax block is not high, it will be crushed during the movement of the components. As the moving plate 224 moves outward, it will squeeze out a channel, allowing the hot wax entering from the feed port 123 to flow into the channel. Then, it flows down into the mold through the slot 226 on the partition plate 222. Through the above components, the solidified wax moves upward and breaks up the wax block to open up a channel connected to the feed port 123, allowing the hot wax to enter the equipment and reach the mold through the feed port 123. The machine can start working directly after it is turned on, avoiding the problem that the hot wax cannot directly reach the inside of the machine and cannot directly enter the mold when the machine starts working directly. This avoids the problem of difficult cleaning and long melting time after the wax solidifies inside.

[0067] The groove assembly 31 includes a material discharge space 311 formed at the bottom of the top rod 214. A connection port 312 is provided at the top of the material discharge space 311. A connecting rod 313 is fixedly connected to the inner wall of the pneumatic telescopic rod 121. The outer wall of the connecting rod 313 is slidably connected to the inner wall of the top rod 214. When the pneumatic telescopic rod 121 moves up and down, it drives the fan blade 217 to rotate inside. Utilizing the characteristic of changes in the internal space of the equipment, when the pneumatic telescopic rod 121 moves, the top rod 214 drives the fan blade 217 to rotate inside. With a slight rotation, when the pneumatic telescopic rod 121 moves upward, it will drive the moving plate 213 to move upward. During this process, there is a brief gap, which causes the liquid to flow and tumble. This flow will cause the bubbles to be subjected to shear force, and the liquid film on the surface of the bubbles will be stretched and thinned, and then ruptured. The tiny foam particles will float on the top and stick to the bottom of the moving plate 213 in the vortex driven by the rotation of the fan blade 217. After the wax injection is completed, the moving plate 213 will be reset under the action of the spring telescopic rod 212, so that the excess bubbles will dissipate during the reset process due to the increased pressure.

[0068] The switch assembly 32 includes a fixing rod 321 fixedly connected to the outer wall of the connecting rod 313. A closing plate 322 is fixedly connected to the end of the fixing rod 321 away from the connecting rod 313. The outer wall of the closing plate 322 is slidably connected to the inner wall of the feeding space 311. Due to the aforementioned movement characteristics during the movement process, the connecting rod 313 is slidably connected inside the top plate 112. When the top rod 214 is displaced, the connecting rod 313 remains fixed to the pressure plate 122 and will not move. The lower end of the connecting rod 313 is fixedly connected to the fixing rod 321, and the lower end of the fixing rod 321 is fixedly connected to the closing plate. 322. When the bottom end of the ejector rod 214 abuts against the mold inlet, it moves upward while the sealing plate 322 remains stationary. It will reach a certain distance inside the mold inlet, and the ejector rod 214 will remain at the mold opening because its top is in contact with the mold inlet, thus offsetting from the sealing plate 322 and allowing the wax to enter the mold. After the work is completed, the pressure plate 122 moves upward, causing the ejector rod 214 to return to its downward movement and re-engage with the sealing plate 322 to seal, preventing hot wax from dripping and forming wax blocks that stick to the machine opening. This would affect the tightness of the ejector rod 214 when it is aligned with the mold opening, easily causing gaps, resulting in reduced pressure and affecting the mold accuracy.

[0069] A specific application of this embodiment is as follows: Before the equipment operates, the pneumatic telescopic mechanism 113 is connected to the air pump, and the feed inlet 123 is connected to the corresponding pipe, allowing wax liquid at approximately 50 or 90 degrees Celsius to enter the equipment. The air pump is then turned on, causing the pneumatic telescopic mechanism 113 to push the pneumatic telescopic rod 121 downwards, which in turn causes the push rod 214 to press against the bottom mold. When the push rod 214 presses against the mold feed inlet, it cannot continue to descend because it is blocking the feed inlet. However, the pneumatic telescopic mechanism 113 will cause the pneumatic telescopic rod 121 and the pressure plate 122 to continue to descend until the surface of the pressure plate 122 is pressed against the mold surface. Up to this point, when the push rod 214 remains relatively fixed due to the action of the spring telescopic rod 212, the descent of the pneumatic telescopic rod 121 will drive some components fixed on the inner wall of the pneumatic telescopic rod 121. When the partition 221 descends with the pneumatic telescopic rod 121, the partition 222 and the linkage plate 225 rotatably connected to the partition 222 will cause the moving plate 224, which was originally attached to the inner wall of the partition 221, to move obliquely upward along the slide block 223. When the machine has not been started for a long time, the interior is filled with solidified wax. When the push rod 214 presses against the bottom mold and the pneumatic telescopic rod 121 continues to descend... The pneumatic telescopic rod 121 provides displacement force for its internal components. As the partition 221 and slide block 223 move downwards, they drive the first partition 222 and the second partition moving plate 224 to move. Simultaneously, the force applied by the pneumatic telescopic rod 121 to the top rod 214 causes the spring telescopic rod 212 to contract, moving the moving plate 213 from its position on the inner wall of the pneumatic telescopic rod 121 upwards. This provides extra space for moving the solidified wax. When the partition 222 and slide block 223 move, they lift the solidified wax. Because the wax block has low density, it will shatter during component movement, thus allowing the moving plate to move. When component 224 moves outward, it will squeeze out a channel, allowing the hot wax entering from inlet 123 to flow down through the channel and into the mold through the slot 226 on partition 222. Through the above components, the solidified wax moves upward, breaking up the wax block and opening a channel connected to inlet 123, allowing the hot wax to enter the equipment through inlet 123 and reach the mold. The machine can start working directly after being turned on, avoiding the problem that the hot wax cannot directly reach the inside of the machine and enter the mold when the machine starts working directly, thus avoiding the problem of difficult cleaning and long melting time after the wax solidifies inside.

[0070] Utilizing the relative movement characteristic of the ejector pin 214, when the pressure plate 122 is fully pressed onto the mold, due to the spring telescopic rod 212, the top of the ejector pin 214 retracts into the inner wall of the pressure plate 122. The corresponding extra portion will cause a change in the structural distribution of the ejector pin 214 within the pneumatic telescopic rod 121. The ejector pin 214 drives the moving plate 213 upwards, leaving extra space for the broken wax blocks. The partition plate 222 pushes the wax blocks upwards. During this movement, the wax blocks, due to their low hardness, break. The threaded groove 215 on the ejector pin 214 will... The fan blade 217 rotates slightly. When the partition 222 moves the wax block upward, the rotating fan blade 217 will break up some of the wax block. Through the above components, when the hot wax enters the machine, the heat of the hot wax itself is spread through the gaps in the broken wax block and melts faster. This avoids the problem of some unmelted wax blocks entering the mold and forming patterns, which reduces the molding accuracy of the mold. At the same time, because the injected hot wax is at a high temperature, it avoids the surface of the fan blade 217 from contacting the surface of the hot wax, which would cause the wax on the surface of the fan blade 217 to lose temperature and stick.

[0071] Taking advantage of the changing size of the internal space of the equipment, when the pneumatic telescopic rod 121 moves, the push rod 214 will drive the fan blade 217 to rotate slightly inside. When the pneumatic telescopic rod 121 moves upward, it will drive the moving plate 213 to move upward. During this process, there is a brief gap, which causes the liquid to flow and roll. This flow will cause the bubbles to be subjected to shear force, and the liquid film on the surface of the bubbles will be stretched and thinned, and then ruptured. The tiny foams will float on the top and stick to the bottom of the moving plate 213 in the vortex driven by the rotation of the fan blade 217. After the wax injection is completed, the moving plate 213 will be reset under the action of the spring telescopic rod 212, so that the excess bubbles will dissipate during the reset process due to the increased pressure.

[0072] Through the movement characteristics described above, the top plate 112 is internally connected to a connecting rod 313. When the push rod 214 moves, the connecting rod 313 is fixed on the pressure plate 122 and will not move. The lower end of the connecting rod 313 is fixedly connected to a fixing rod 321, and the lower end of the fixing rod 321 is fixedly connected to a sealing plate 322. When the bottom end of the push rod 214 abuts against the mold inlet, it moves upward, and the sealing plate 322 remains stationary. It will reach a certain distance inside the mold inlet, while the push rod 214 will remain at the mold opening because its top is in contact with the mold inlet, thus offsetting from the sealing plate 322 and allowing the wax liquid to enter the mold. When the work is finished, the pressure plate 122 moves upward, causing the push rod 214 to return to its downward movement and re-engage with the sealing plate 322 to seal, preventing hot wax from dripping and forming wax blocks that stick to the machine opening. This would affect the tightness of the push rod 214 when it is connected to the mold opening, easily causing gaps, resulting in reduced pressure and affecting the mold accuracy.

[0073] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wax pressing machine for investment casting precision casting, comprising a sliding rod (111), characterized in that, Also includes: Platform (1), the outer wall of which is provided with an installation space; Telescopic mechanism (2), which is installed on the outer wall of platform (1); The feeding mechanism (3) is installed on the inner wall of the platform (1); The platform (1) includes: Press assembly (11), which is fixedly connected to the outer wall of platform (1) through press parts, is used to provide basic power; The press component includes a sliding rod (111) fixedly connected to the outer wall of the platform (1), a top plate (112) fixedly connected to the outer wall of the sliding rod (111), and a pneumatic telescopic mechanism (113) fixedly connected to the top of the top plate (112). The movable component (12) is fixedly connected to the outer wall of the press assembly (11) by a movable part, providing a basic mechanical component for vertical movement; The moving part includes a pneumatic telescopic rod (121) fixedly connected to the bottom of the pneumatic telescopic machine (113). The telescopic mechanism (2) includes: The reset component (21) is fixedly connected to the inner wall of the moving component (12) through a reset member, and provides reset kinetic energy; The reset component includes a spring telescopic rod (212) fixedly connected to the inner wall of the pneumatic telescopic rod (121), a movable plate (213) fixedly connected to the bottom of the spring telescopic rod (212), and a top rod (214) fixedly connected to the bottom of the movable plate (213). The opening and closing component (22) is fixedly connected to the inner wall of the reset component (21) through the opening and closing parts, providing opening and closing space; The opening and closing component includes a partition (221) fixedly connected to the inner wall of the pneumatic telescopic rod (121), and a partition (222) fixedly connected to the outer wall of the top rod (214). The feeding mechanism (3) includes: The groove assembly (31) has its sidewalls fixedly connected to the outer wall of the reset assembly (21); A switch assembly (32) is fixedly connected to the outer wall of a groove assembly (31); The reset assembly (21) includes a fixed ring (216) fixedly connected to the inner wall of the pneumatic telescopic machine (113), a fan blade (217) rotatably connected to the outer wall of the fixed ring (216), a threaded groove (215) opened on the outer wall of the push rod (214), the inner wall of the fixed ring (216) and the outer wall of the push rod (214) are slidably connected, and the inner wall of the fan blade (217) is engaged with the outer wall of the threaded groove (215). The opening and closing assembly (22) includes a linkage plate (225) rotatably connected to the partition plate (222). A movable plate (224) is rotatably connected to one end of the linkage plate (225) away from the partition plate (222). A sliding block (223) is fixedly connected to the inner wall of the partition plate (221). The side wall of the movable plate (224) is engaged with the sliding block (223). A slot (226) is opened on the outer wall of the opening and closing assembly (22). The groove assembly (31) includes a material discharge space (311) at the bottom of the top rod (214), and a connection port (312) is provided at the top of the material discharge space (311). A connecting rod (313) is fixedly connected to the inner wall of the pneumatic telescopic rod (121), and the outer wall of the connecting rod (313) is slidably connected to the inner wall of the top rod (214).

2. The wax pressing machine for investment casting according to claim 1, characterized in that: The press assembly (11) includes a cabinet (114) fixedly connected to the bottom of the platform (1).

3. The wax pressing machine for investment casting according to claim 2, characterized in that: The moving component (12) includes a pressure plate (122) fixedly connected to the bottom of the pneumatic telescopic rod (121), and a feed port (123) is fixedly connected to the outer wall of the pneumatic telescopic rod (121). The inner wall of the pressure plate (122) is slidably connected to the outer wall of the sliding rod (111).

4. A wax pressing machine for investment casting according to claim 3, characterized in that: The switch assembly (32) includes a fixing rod (321) fixedly connected to the outer wall of the connecting rod (313). A closing plate (322) is fixedly connected to one end of the fixing rod (321) away from the connecting rod (313). The outer wall of the closing plate (322) is slidably connected to the inner wall of the feeding space (311).

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