Wax press for precision investment casting

Abstract

The invention relates to the technical field of precision casting, and discloses a wax injection machine for precision investment casting, which comprises a platform, and a mounting space is arranged on the outer wall of the platform; the telescopic mechanism is installed on the outer wall of the platform, and the discharging mechanism is installed on the inner wall of the platform. When a first partition plate and a sliding groove block move, solidified wax liquid can be lifted, wax blocks can be smashed in the moving process of the assembly, and therefore when a second moving plate moves outwards, a channel can be extruded out, hot wax entering from a feeding port flows downwards from the opened channel, flows to the lower end through a notch formed in the first partition plate and enters a mold, and the mold is formed. The solidified wax liquid moves upwards to crush wax blocks to open up a channel connected with the feeding port, so that hot wax enters equipment through the feeding port to reach a mold, and the problems that when the machine directly starts to work, the hot wax cannot directly reach the interior of the machine and cannot directly enter the mold, and after the internal wax liquid is condensed, cleaning is difficult, and the melting time is long are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of precision casting, and particularly relates to a wax injection machine for investment precision casting. Background Art

[0002] Precision casting is a special casting method compared with the traditional casting process. It can obtain relatively accurate shapes and higher casting precision. Molds are designed and manufactured according to product requirements, and wax is cast by pouring to obtain the original wax pattern; the processes of coating and sand spreading are repeated on the wax pattern to harden the mold shell and dry it; then the internal wax pattern is melted, which is called dewaxing, to obtain the cavity; the mold shell is roasted to obtain sufficient strength and air permeability; the required metal material is poured; and the sand is removed after shelling, so as to obtain high-precision results.

[0003] For most wax injection machines, after a long period of shutdown, the residual wax liquid inside solidifies. Due to the special position of the wax liquid storage, it is difficult to clean the semi-closed space inside the machine, resulting in a large amount of time consumption for cleaning when using again. The present invention proposes the following solutions for the above problems. Summary of the Invention

[0004] To solve the above technical problems, a wax injection machine for investment precision casting includes a sliding rod, and further includes:

[0005] A platform, on the outer wall of which there is an installation space;

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

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

[0008] Before the equipment works, connect the pneumatic telescopic machine to the air pump, and connect the feeding port to the corresponding pipeline, so that the wax liquid at about fifty degrees or ninety degrees enters the equipment interior, and turn on the air pump to make the pneumatic telescopic machine push the pneumatic telescopic rod to move downward.

[0009] Preferably, the platform includes:

[0010] A press component, which is fixedly connected to the outer wall of the platform through a press part and is used to provide basic power;

[0011] The press part includes a sliding rod fixedly connected to the outer wall of the platform. A top plate is fixedly connected to the outer wall of the sliding rod, and a pneumatic telescopic machine is fixedly connected to the top of the top plate;

[0012] A moving component, which is fixedly connected to the outer wall of the press component through a moving part and provides the basic mechanical component for moving up and down;

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

[0014] Preferably, the telescopic mechanism includes:

[0015] A reset component, which is fixedly connected to the inner wall of the moving component through a reset member and provides reset kinetic energy;

[0016] The reset member includes a spring telescopic rod fixedly connected to the inner wall of the pneumatic telescopic rod. The bottom of the spring telescopic rod is fixedly connected with a moving plate, and the bottom of the moving plate is fixedly connected with a push rod.

[0017] An opening and closing component, which is fixedly connected to the inner wall of the reset component through an opening and closing member and provides an opening and closing space;

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

[0019] Preferably, the feeding mechanism includes:

[0020] A groove component, the side wall of which is fixedly connected to the outer wall of the reset component;

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

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

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

[0024] Preferably, the reset component includes a fixed ring fixedly connected to the inner wall of the pneumatic telescopic machine. A fan blade is rotatably connected to the outer wall of the fixed ring. A threaded groove is provided 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 meshed with the outer wall of the threaded groove. Using the characteristic of the relative movement of the above-mentioned push rod, when the pressing plate is completely pressed on the mold, due to the spring telescopic rod, the top end of the push rod is received into the inner wall of the pressing plate, and the corresponding extra part 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 one pushes the wax block upward. The wax block will break during the movement due to its low hardness. The threaded groove provided on the push rod will drive the fan blade to rotate slightly. When the partition one drives the wax block to move upward to this time, the rotating fan blade will crush part of the wax block. Through the above components, when the hot wax enters the machine interior, it enters the internal space through the gaps of the broken wax blocks. The heat of the hot wax itself is transmitted and melted through the gaps of the crushed wax blocks, avoiding the problem that part of the unmelted wax blocks enter the mold and form patterns, reducing the molding accuracy of the mold. At the same time, because the injected hot wax has a high temperature, it is avoided that the surface of the fan blade contacts the surface of the hot wax, causing the wax on the surface of the fan blade to lose temperature and form adhesion.

[0025] Preferably, the opening and closing assembly includes a linkage plate rotatably connected to the partition one, and the linkage plate is rotatably connected to the movable plate two at one end away from the partition one, the inner wall of the partition is fixedly connected to a slide block, and the side wall of the movable plate two is meshed and connected with the slide block, and a notch is provided on the outer wall of the opening and closing assembly. Before the equipment works, the pneumatic telescopic machine is connected to the air pump, and the feed port is connected to the corresponding pipeline, so that the wax liquid enters the interior of the equipment at an angle of fifty or ninety degrees, and the air pump is turned on to make the pneumatic telescopic machine push the pneumatic telescopic rod to move downward, driving the ejector rod to resist the bottom mold, and moving upward when the ejector rod resists the feed port of the mold, and when the ejector rod moves upward, it drives the partition one and the linkage plate rotatably connected to the partition one, and the linkage plate will make the movable plate two originally attached to the inner wall of the partition move obliquely upward along the slide block. When the machine has not been started for a long time, the interior is filled with solidified wax liquid, and the internal components of the pneumatic telescopic rod provide displacement force. Because the partition and the slide block move downward, driving the partition one, the partition When the movable plate two moves, and the pneumatic telescopic rod applies force on the push rod at the same time, the spring telescopic rod contracts, so that the movable plate is located at the inner wall of the pneumatic telescopic rod and moves upward, providing extra position for moving the solidified wax liquid. When the partition plate one and the slide block move, the solidified wax liquid will be lifted. Because the density of the wax block is not high, the wax block will be crushed during the movement of the component. Therefore, when the movable plate two moves outward, a channel will be squeezed out, so that the hot wax entering from the feed port flows downward from the opened channel and flows to the lower end through the groove opened on the partition plate one into the mold. Through the above components, the solidified wax liquid moves upward to break the wax block to open up a channel connected to the feed port, so that the hot wax enters the equipment through the feed port and reaches 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, avoiding the problem that after the internal wax liquid condenses, it is difficult to clean and the melting time is long.

[0026] Preferably, the groove assembly includes a discharge space opened at the bottom of the push rod, a connection port is opened at the top of the discharge space, the inner wall of the pneumatic telescopic rod is fixedly connected with a connecting rod 1, and the outer wall of the connecting rod 1 is slidably connected to the inner wall of the push rod. By utilizing the characteristic of the change in size of the internal space of the equipment, when the pneumatic telescopic rod is displaced, the push rod drives the fan blades to rotate slightly inside, and when the pneumatic telescopic rod is displaced upward, it drives the movable plate to move upward. During this process, a short gap period occurs, causing 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 burst. The tiny foam will float on the upper end and fit the bottom of the movable plate in the vortex driven by the rotation of the fan blades. When the injection of the wax liquid is completed, the movable plate is reset under the drive of the spring telescopic rod, so that the excess bubbles are dissipated in the pressure increase and squeezing during the reset process.

[0027] Preferably, the switch assembly includes a fixing rod 1 fixedly connected to the outer wall of the connecting rod 1, and one end of the fixing rod 1 is fixedly connected to a closing plate away from the connecting rod 1. The outer wall of the closing plate is slidably connected to the inner wall of the discharge space, and the inner part of the top plate is fixedly connected to the connecting rod 1. Through the characteristics of movement during the above-mentioned movement process, the inner part of the top plate is slidably connected to the connecting rod 1. When the top rod is displaced, the connecting rod 1 is fixed on the pressing plate and will not move. The lower end of the connecting rod is fixedly connected to the fixing rod 1, and the lower end of the fixing rod is fixedly connected to the closing plate. When the bottom end of the top rod is against the mold inlet and moves upward, the closing plate is fixed and will reach a distance inside the mold inlet, and the top rod will stay at the mold inlet because the top is in contact with the mold inlet, thereby being staggered with the closing plate, allowing the wax liquid to enter the mold. When the work is completed, the pressing plate moves upward, causing the top rod to resume downward movement and re-engage with the closing plate to prevent hot wax from dripping, forming wax blocks sticking to the machine mouth, affecting the compaction when the top rod and the mold mouth are docked, and gaps are easily formed, resulting in pressure reduction and affecting the mold accuracy.

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

[0029] (1) When the machine of the present invention has not been started for a long time, the interior is filled with solidified wax liquid. The internal components of the pneumatic telescopic rod provide displacement force. Because the partition and the slide block move downward, the partition one and the partition moving plate two are driven to move. At the same time, when the pneumatic telescopic rod exerts force on the top rod, the spring telescopic rod contracts, so that the position of the moving plate located on the inner wall of the pneumatic telescopic rod moves upward, providing redundant space for moving the solidified wax liquid. When the partition one and the slide block move, the solidified wax liquid will be lifted. Because the density of the wax block is not high, the wax block will be crushed during the movement of the components, thereby When the movable plate 2 moves outward, it will squeeze out a channel, so that the hot wax entering from the feed port will flow downward from the opened channel and flow to the lower end through the groove opened on the partition plate 1 into the mold. Through the above components, the solidified wax liquid moves upward to break the wax block to open up a channel connected to the feed port, so that the hot wax enters the equipment through the feed port and reaches 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, avoiding the problem that after the internal wax liquid condenses, it is difficult to clean and the melting time is long.

[0030] (2) The present invention utilizes the relative movement characteristic of the above-mentioned push rod. When the pressure plate is completely pressed on the mold, due to the relationship between the spring telescopic rod, the top of the push rod is retracted into the inner wall of the pressure plate. The corresponding excess part will cause the structural distribution of the push rod inside the pneumatic telescopic rod to change. The push rod drives the movable plate to move upward, leaving extra space for breaking the wax block inside. The partition pushes the wax block upward. During the movement, the wax block is broken due to its low hardness. The threaded groove set on the push rod will drive the fan blade to rotate slightly. When the partition drives the wax block to move upward to this point, the rotating fan blade will crush part of the wax block. Through the above-mentioned components, when hot wax enters the machine, the gaps of the broken wax blocks enter the internal space, and the heat of the hot wax itself is transmitted through the gaps of the crushed wax blocks to melt faster, thereby avoiding the problem that some unmelted wax blocks enter the mold, forming lines and reducing the molding accuracy of the mold. At the same time, due to the high temperature of the injected hot wax, the surface of the fan blade is prevented from contacting the surface of the hot wax, causing the wax on the surface of the fan blade to lose temperature and form adhesion.

[0031] (3) The present invention utilizes the characteristic of the change in the size of the internal space of the equipment. When the pneumatic telescopic rod is displaced, the top rod will drive the fan blades to rotate slightly inside. When the pneumatic telescopic rod is displaced upward, it will drive the movable plate to move upward. During this process, a short idle period occurs, causing 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 burst. The tiny foam will float on the upper end and fit on the bottom of the movable plate in the vortex driven by the rotation of the fan blades. When the injection of the wax liquid is completed, the movable plate is reset under the drive of the spring telescopic rod, so that the excess bubbles are dissipated in the pressure increase and squeezing during the reset process.

[0032] (4) Through the characteristics of movement during the above-mentioned movement process, the internal sliding connection of the top plate is connected with a connecting rod 1. When the top rod is displaced, the connecting rod 1 is fixed on the pressure plate and will not move. The lower end of the connecting rod is fixedly connected to the fixing rod 1, and the lower end of the fixing rod is fixedly connected to the closing plate. When the bottom end of the top rod is against the mold inlet, it moves upward, and the closing plate is fixed and will reach a certain distance inside the mold inlet. The top rod will stay at the mold mouth because the top is in contact with the mold inlet, thereby being offset from the closing plate, allowing the wax liquid to enter the mold. When the work is completed, the pressing plate moves upward, allowing the top rod to resume downward movement and re-engage with the closing plate to prevent hot wax from dripping and forming wax blocks sticking to the machine mouth, which affects the compaction when the top rod and the mold mouth are connected, and gaps are easily formed, resulting in reduced pressure and affecting the mold accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

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

[0035] Figure 2 Schematic diagram of the overall structure of the present invention;

[0036] Figure 3 Schematic diagram of the telescopic mechanism of the present invention;

[0037] Figure 4 Schematic diagram of the interior of the opening and closing component of the present invention;

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

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

[0040] Figure 7 Internal cross-sectional schematic diagram of the overall structure of the present invention;

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

[0042] Figure 9 Enlarged schematic diagram of C in 7 of the present invention.

[0043] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0044] In the figure: 1. Platform; 11. Pressing machine assembly; 12. Moving assembly; 111. Sliding rod; 112. Top plate; 113. Pneumatic telescopic machine; 121. Pneumatic telescopic rod; 122. Pressing plate; 123. Feeding port; 114. Cabinet; 2. Telescopic mechanism; 21. Reset assembly; 22. Opening and closing assembly; 212. Spring telescopic rod; 213. Moving plate; 214. Thrust rod; 215. Thread; 216. Fixed ring; 217. Fan blade; 221. Partition; 222. Partition one; 223. Chute block; 224. Moving plate two; 225. Linking plate; 226. Notch; 3. Feeding mechanism; 31. Groove assembly; 32. Switch assembly; 311. Feeding space; 312. Connection port; 313. Connecting rod one; 321. Fixed rod one; 322. Sealing plate. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment 1. Please refer to Figure 1 - Figure 7 , a wax injection machine for investment casting of the present invention includes a sliding rod 111, and further includes:

[0047] A platform 1, and an installation space is provided on the outer wall of the platform 1;

[0048] A telescopic mechanism 2, and the telescopic mechanism 2 is installed on the outer wall of the platform 1;

[0049] A feeding mechanism 3, and the feeding mechanism 3 is installed on the inner wall of the platform 1.

[0050] The platform 1 includes:

[0051] A press assembly 11, and the press assembly 11 is fixedly connected to the outer wall of the platform 1 through a press member to provide basic power;

[0052] The press member includes a sliding rod 111 fixedly connected to the outer wall of the platform 1, a top plate 112 is fixedly connected to the outer wall of the sliding rod 111, and a pneumatic telescopic machine 113 is fixedly connected to the top of the top plate 112;

[0053] A moving assembly 12, and the moving assembly 12 is fixedly connected to the outer wall of the press assembly 11 through a moving member to provide a basic mechanical assembly for moving up and down;

[0054] The moving member includes a pneumatic telescopic rod 121 fixedly connected to the bottom of the pneumatic telescopic machine 113.

[0055] The telescopic mechanism 2 includes:

[0056] A reset assembly 21, and the reset assembly 21 is fixedly connected to the inner wall of the moving assembly 12 through a reset member to provide reset kinetic energy;

[0057] The reset member includes a spring telescopic rod 212 fixedly connected to the inner wall of the pneumatic telescopic rod 121, a moving plate 213 is fixedly connected to the bottom of the spring telescopic rod 212, and a top rod 214 is fixedly connected to the bottom of the moving plate 213;

[0058] An opening and closing assembly 22, and the opening and closing assembly 22 is fixedly connected to the inner wall of the reset assembly 21 through an opening and closing member to provide an opening and closing space;

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

[0060] The feeding mechanism 3 includes:

[0061] A groove assembly 31, the side wall of the groove assembly 31 is fixedly connected to the outer wall of the reset assembly 21;

[0062] A switch assembly 32, 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 assembly 12 includes a pressing plate 122 fixedly connected to the bottom of the pneumatic telescopic rod 121, a feeding port 123 is fixedly connected to the outer wall of the pneumatic telescopic rod 121, and the inner wall of the pressing 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 machine 113. A fan blade 217 is rotatably connected to the outer wall of the fixed ring 216. A threaded groove 215 is provided on the outer wall of the ejector rod 214. The inner wall of the fixed ring 216 is slidably connected to the outer wall of the ejector rod 214. The inner wall of the fan blade 217 is meshed with the outer wall of the threaded groove 215. Utilizing the relative movement characteristic of the above-mentioned ejector rod 214, when the pressing plate 122 is completely pressed on the mold, due to the spring telescopic rod 212, the top end of the ejector rod 214 retracts into the inner wall of the pressing plate 122. Correspondingly, the extra part will cause the structural distribution of the ejector rod 214 inside the pneumatic telescopic rod 121 to change. The ejector rod 214 drives the moving plate 213 to move upward, leaving extra space for breaking the wax block inside. The partition 222 pushes the wax block upward. The wax block will break during the movement due to its low hardness. The threaded groove 215 provided on the ejector rod 214 will drive the fan blade 217 to rotate slightly. When the partition 222 drives the wax block upward to this point, the rotating fan blade 217 will crush part of the wax block. Through the above components, when the hot wax enters the machine interior, it enters the internal space through the gaps of the broken wax blocks. The heat of the hot wax itself spreads faster and melts through the gaps of the crushed wax blocks, avoiding the problem that some unmelted wax blocks enter the mold, forming patterns and reducing the molding accuracy of the mold. At the same time, due to the high temperature of the injected hot wax, it is avoided that the surface of the fan blade 217 contacts the surface of the hot wax, causing the wax on the surface of the fan blade 217 to lose temperature and form adhesion.

[0066] Example two, please refer to Figure 4 - Figure 9The present invention is a wax injector for investment casting. On the basis of the first embodiment, the opening and closing assembly 22 includes a linkage plate 225 rotatably connected to the partition 1 222. The end of the linkage plate 225 away from the partition 1 222 is rotatably connected to the movable plate 224. The inner wall of the partition 221 is fixedly connected to the slide block 223. The side wall of the movable plate 224 is meshed with the slide block 223. The outer wall of the opening and closing assembly 22 is provided with a notch 226. Before the equipment is working, the pneumatic telescopic machine 113 is connected to the air pump, and the feed port 123 is connected to the corresponding pipeline, so that the wax liquid at about fifty or ninety degrees enters the interior of the equipment. The air pump is turned on to make the pneumatic telescopic machine 113 push the pneumatic telescopic rod 121 to move downward, driving The push rod 214 is against the bottom mold. When the push rod 214 is against the mold feed port, because the push rod 214 is against the feed port, the push rod 214 cannot continue to descend, and the pneumatic telescopic machine 113 will make the pneumatic telescopic rod 121 and the pressure plate 122 continue to descend until the surface of the pressure plate 122 is pressed against the surface of the mold. When the push rod 214 is 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 follows the pneumatic telescopic rod 121 to descend, the partition 222 and the linkage plate 225 rotatably connected to the partition 222 will make the movable plate originally pressed against the inner wall of the partition 221 The second plate 224 moves obliquely upward along the slide block 223. When the machine has not been started for a long time, the inside is filled with solidified wax liquid. Because the push rod 214 supports the mold at the bottom and the pneumatic telescopic rod 121 continues to descend, it provides displacement force for the internal components of the pneumatic telescopic rod 121. Because the partition 221 and the slide block 223 move downward, the partition 1 222 and the partition moving plate 224 are driven to move. At the same time, the force applied by the pneumatic telescopic rod 121 on the push rod 214 causes the spring telescopic rod 212 to contract, so that the moving plate 213 located at the inner wall of the pneumatic telescopic rod 121 moves upward, providing redundant space for moving the solidified wax liquid. When the partition 1 222 and the slide block 223 move, the solidified wax will be lifted. Liquid, because the density of the wax block is not high, the wax block will be crushed during the movement of the component, so that when the movable plate 224 moves outward, a channel will be squeezed out, so that the hot wax entering from the feed port 123 will flow into the opened channel, and then flow to the lower end through the groove 226 opened on the partition 222 and enter the mold. Through the above-mentioned components, the solidified wax liquid moves upward and breaks the wax block to open up a channel connected to the feed port 123, so that the hot wax enters the equipment through the feed port 123 and reaches 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, avoiding the problem that after the internal wax liquid condenses, it is difficult to clean and the melting time is long.

[0067] The groove assembly 31 includes a discharge space 311 opened at the bottom of the top rod 214, and a connection port 312 is opened at the top of the discharge space 311. The inner wall of the pneumatic telescopic rod 121 is fixedly connected with a connecting rod 313, and 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, the fan blades 217 are driven to rotate inside. By utilizing the characteristics of the change in the size of the internal space of the device, when the pneumatic telescopic rod 121 is displaced, the top rod 214 will drive the fan blades 217 to rotate inside. The pneumatic telescopic rod 121 rotates slightly and moves upward, which drives the movable plate 213 to move upward. During this process, a short idle period occurs, causing the liquid to flow and roll. 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, and then bursts. The tiny bubbles will float on the upper end and fit the bottom of the movable plate 213 in the vortex driven by the rotation of the fan blades 217. When the injection of the wax liquid is completed, the movable plate 213 is reset under the drive of the spring telescopic rod 212, so that the excess bubbles are dissipated in the pressure increase and squeezing during the reset process.

[0068] The switch assembly 32 includes a fixing rod 321 fixedly connected to the outer wall of the connecting rod 313, and the end of the fixing rod 321 away from the connecting rod 313 is fixedly connected to the closing plate 322, and the outer wall of the closing plate 322 is slidably connected to the inner wall of the discharge space 311. Through the characteristics of movement during the above movement process, the interior of the top plate 112 is slidably connected to the connecting rod 313. When the top rod 214 is displaced, the connecting rod 313 is fixed on the pressing 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 push rod 214 is against the mold feed port and moves upward, the closing plate 322 is fixed and will reach a distance inside the mold feed port, and the push rod 214 will stay at the mold port because the top is in contact with the mold feed port, thereby being staggered with the closing plate 322, allowing the wax liquid to enter the mold. When the work is completed, the pressing plate 122 moves upward, allowing the push rod 214 to resume moving downward and re-engage with the closing plate 322 to prevent hot wax from dripping and forming wax blocks sticking to the machine port, affecting the compression when the push rod 214 is docked with the mold port, and easily causing gaps, resulting in reduced pressure and affecting the mold accuracy.

[0069] A specific application of this embodiment is: before the equipment works, the pneumatic telescopic machine 113 is connected to the air pump, and the feed port 123 is connected to the corresponding pipeline, so that the wax liquid at about fifty or ninety degrees enters the interior of the equipment, and the air pump is turned on to make the pneumatic telescopic machine 113 push the pneumatic telescopic rod 121 to move downward, driving the push rod 214 to press against the bottom mold. When the push rod 214 presses against the feed port of the mold, because the push rod 214 presses against the feed port, the push rod 214 cannot continue to descend, and the pneumatic telescopic machine 113 will make the pneumatic telescopic rod 121 and the pressure plate 122 continue to descend until the surface of the pressure plate 122 fits and squeezes the surface of the mold. When the push rod 214 is 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 follows the pneumatic telescopic rod 121 to descend, the partition 1 222 and the linkage plate 225 rotatably connected to the partition 1 222 will make the movable plate 224 originally attached to the inner wall of the partition 221 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 liquid. When the push rod 214 is pressed against the bottom mold and the pneumatic telescopic rod 121 continues to descend, , providing displacement force for the internal components of the pneumatic telescopic rod 121, because the partition 221 and the slide block 223 move downward, driving the partition 1 222 and the partition moving plate 224 to move, and at the same time, when the pneumatic telescopic rod 121 exerts a force on the top rod 214, the spring telescopic rod 212 contracts, so that the moving plate 213 located at the inner wall of the pneumatic telescopic rod 121 moves upward, providing an extra position for moving the solidified wax liquid. When the partition 1 222 and the slide block 223 move, the solidified wax liquid will be lifted. Because the density of the wax block is not high, the wax block will be crushed during the movement of the components, so that when the moving plate When the second 224 moves outward, it will squeeze out a channel, so that the hot wax entering from the feed port 123 flows downward from the opened channel and flows to the lower end into the mold through the groove 226 opened on the partition 222. Through the above components, the solidified wax liquid moves upward to break the wax block to open up a channel connected to the feed port 123, so that the hot wax enters the equipment through the feed port 123 and reaches 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, avoiding the problem that after the internal wax liquid condenses, it is difficult to clean and the melting time is long.

[0070] By utilizing the relative movement characteristics of the above-mentioned push rod 214, when the pressing plate 122 is completely pressed on the mold, due to the relationship between the spring telescopic rod 212, the top end of the push rod 214 is retracted into the inner wall of the pressing plate 122, and the corresponding extra part 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, leaving extra space for breaking the wax block inside, and the partition 222 pushes the wax block upward. The wax block is broken during the movement due to its low hardness, and the threaded groove 215 set on the push rod 214 will bring The moving fan blade 217 rotates slightly, and when the partition 222 drives the wax block to move upward to this point, the rotating fan blade 217 will crush some of the wax blocks. Through the above components, when the hot wax enters the machine, the gaps in the broken wax blocks enter the internal space, and the heat of the hot wax itself spreads through the gaps in the crushed wax blocks to melt faster, thereby preventing some unmelted wax blocks from entering the mold and forming lines that reduce the molding accuracy of the mold. At the same time, due to the high temperature of the injected hot wax, the surface of the fan blade 217 is prevented from contacting the surface of the hot wax, causing the wax on the surface of the fan blade 217 to lose temperature and form adhesion.

[0071] By utilizing the characteristic of the change in size of the internal space of the equipment, when the pneumatic telescopic rod 121 is displaced, the top rod 214 will drive the fan blades 217 to rotate slightly inside. When the pneumatic telescopic rod 121 is displaced upward, it will drive the movable plate 213 to move upward. During this process, a short idle period occurs, causing 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 burst. The tiny bubbles will float on the upper end and fit the bottom of the movable plate 213 in the vortex driven by the rotation of the fan blades 217. When the injection of the wax liquid is completed, the movable plate 213 is reset under the drive of the spring telescopic rod 212, so that the excess bubbles are dissipated in the pressure increase and squeezing during the reset process.

[0072] When the push rod 214 is moved, the push 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 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 push rod 214 is against the mold inlet and moves upward, the closing plate 322 is fixed and will reach a distance inside the mold inlet. The push rod 214 will stay at the mold inlet because the top is in contact with the mold inlet, thereby being staggered with the closing plate 322, allowing the wax liquid to enter the mold. When the work is completed, the pressure plate 122 moves upward, allowing the push rod 214 to resume downward movement and re-engage with the closing plate 322 to prevent hot wax from dripping and forming wax blocks sticking to the machine mouth, which affects the compaction when the push rod 214 and the mold mouth are docked, and gaps are easily formed, resulting in reduced pressure and affecting the mold accuracy.

[0073] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A wax injection molding machine for investment casting, comprising a sliding rod (111), characterized in that: Also includes: A platform (1), wherein an outer wall of the platform (1) is provided with an installation space; A telescopic mechanism (2), wherein the telescopic mechanism (2) is installed on the outer wall of the platform (1); Discharging mechanism (3) The discharging mechanism (3) is installed on the inner wall of the platform (1).

2. A wax injection molding machine for investment casting according to claim 1, characterized in that: The platform (1) comprises: A press assembly (11), wherein the press assembly (11) is fixedly connected to the outer wall of the platform (1) via a press member and is used to provide basic power; The press component comprises a sliding rod (111) fixedly connected to the outer wall of the platform (1), the outer wall of the sliding rod (111) is fixedly connected to a top plate (112), and the top of the top plate (112) is fixedly connected to a pneumatic telescopic machine (113); A moving assembly (12), wherein the moving assembly (12) is fixedly connected to the outer wall of the press assembly (11) through a moving member, and provides a basic mechanical assembly for moving up and down; The moving part comprises a pneumatic telescopic rod (121) fixedly connected to the bottom of the pneumatic telescopic machine (113).

3. A wax injection molding machine for investment casting according to claim 2, characterized in that: The telescopic mechanism (2) comprises: A reset component (21), wherein the reset component (21) is fixedly connected to the inner wall of the moving component (12) via a reset member to provide reset kinetic energy; The reset member comprises a spring telescopic rod (212) fixedly connected to the inner wall of the pneumatic telescopic rod (121), a moving plate (213) fixedly connected to the bottom of the spring telescopic rod (212), and a push rod (214) fixedly connected to the bottom of the moving plate (213); An opening and closing assembly (22), wherein the opening and closing assembly (22) is fixedly connected to the inner wall of the resetting assembly (21) via an opening and closing member to provide an opening and closing space; The opening and closing member comprises a partition plate (221) fixedly connected to the inner wall of the pneumatic telescopic rod (121), and a partition plate 1 (222) is fixedly connected to the outer wall of the push rod (214).

4. A wax injection molding machine for investment casting according to claim 3, characterized in that: The material discharge mechanism (3) comprises: A groove assembly (31), wherein a side wall of the groove assembly (31) is fixedly connected to an outer wall of the reset assembly (21); A switch component (32), wherein the outer wall of the switch component (32) is fixedly connected to the outer wall of the groove component (31).

5. A wax injection molding machine for investment casting according to claim 4, characterized in that: The press assembly (11) comprises a cabinet (114) fixedly connected to the bottom of the platform (1).

6. A wax injection molding machine for investment casting according to claim 5, characterized in that: The moving assembly (12) comprises a pressing plate (122) fixedly connected to the bottom of a pneumatic telescopic rod (121); a feed port (123) is fixedly connected to the outer wall of the pneumatic telescopic rod (121); and an inner wall of the pressing plate (122) is slidably connected to the outer wall of the sliding rod (111).

7. A wax injection molding machine for investment casting according to claim 6, characterized in that: The reset assembly (21) comprises a fixed ring (216) fixedly connected to the inner wall of the pneumatic telescopic machine (113); a fan blade (217) is rotatably connected to the outer wall of the fixed ring (216); a thread groove (215) is provided 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); and the inner wall of the fan blade (217) is meshedly connected to the outer wall of the thread groove (215).

8. A wax injection molding machine for investment casting according to claim 7, characterized in that: The opening and closing assembly (22) comprises a linkage plate (225) rotatably connected to the partition plate 1 (222); one end of the linkage plate (225) away from the partition plate 1 (222) is rotatably connected to the movable plate 2 (224); the inner wall of the partition plate (221) is fixedly connected to a slide block (223); the side wall of the movable plate 2 (224) is meshedly connected to the slide block (223); and the outer wall of the opening and closing assembly (22) is provided with a notch (226).

9. A wax injection molding machine for investment casting according to claim 8, characterized in that: The groove assembly (31) comprises a discharge space (311) opened at the bottom of the push rod (214), a connection port (312) is opened at the top of the discharge space (311), a connecting rod 1 (313) is fixedly connected to the inner wall of the pneumatic telescopic rod (121), and the outer wall of the connecting rod 1 (313) is slidably connected to the inner wall of the push rod (214).

10. A wax injection molding machine for investment casting according to claim 9, characterized in that: The switch assembly (32) comprises a fixing rod 1 (321) fixedly connected to the outer wall of the connecting rod 1 (313), One end of the fixing rod 1 (321) away from the connecting rod 1 (313) is fixedly connected to a closing plate (322). The outer wall of the closing plate (322) is slidably connected to the inner wall of the discharge space (311).

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