CN113524394B - Multi-station automatic hot-press casting device - Google Patents

Abstract

The invention relates to a multi-station automatic hot die casting device, comprising: a die casting mechanism: including an upper die assembly and a lower die assembly, the upper die assembly includes a first worktable capable of vertical movement, the first worktable is connected to the mold The cavity plate is fixedly connected, the cavity plate has a cavity, the cavity includes a gate part and a forming part, an upper mold capable of vertical movement is arranged above the cavity plate, the upper mold is provided with a top rod extending into the forming part, and the upper mold There is a gate push plate that can move vertically above, the gate push plate is provided with a mandrel that can extend into the gate portion, and the edge of the bottom surface of the mandrel is provided with a chamfer. Two worktables, the second worktable is fixed with a lower mold with a gate; grouting mechanism: for injecting slurry into the gate of the lower mold; unloading mechanism: including a first bracket, the first bracket and the drive It is connected to the first driving mechanism that moves under the cavity plate, and also includes a second bracket, the second bracket is connected to the second driving mechanism that can drive it to move to the lower part of the lower mold, and the hot die casting device of the present invention is automated. The degree is high and the labor intensity is reduced.

Description

A multi-station automatic hot die casting device

technical field

The invention relates to the technical field of alumina ceramic processing and molding, in particular to a multi-station automatic hot die casting device.

Background technique

The statements herein merely provide background related to the present invention and do not necessarily constitute prior art.

Forming methods of alumina ceramic products include dry pressing, grouting, extrusion, cold isostatic pressing, injection, casting, hot pressing and hot isostatic pressing.

Hot die casting is a relatively extensive production process for producing special ceramics. The slurry is injected into the metal mold under a certain pressure to form, cooled and the wax slurry is solidified and then demolded to take out the formed body. The green body is properly trimmed, embedded in the adsorbent and heated for dewaxing treatment, and then the dewaxed green body is sintered into the final product.

The inventor found that the most widely used traditional hot die casting equipment has a low degree of automation, and most of them use manual mold clamping, which is very labor-intensive. In addition, the six major processes of mold clamping, grouting, pressure maintaining, cutting grouting port, demoulding, and embryo release are all operated by the workers according to their experience. The solenoid pneumatic valve button is pressed in sequence, which is cumbersome work, and due to the manual control of the operation time of each process, there is a problem. Due to the disadvantages of low yield, excessive energy consumption and low safety, the inventor also found that the current die-casting machine needs to manually collect the embryos after the embryos are produced, which cannot complete automatic unloading, and cannot remove the grouting port. The degree of automation low, increasing the labor intensity.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a multi-station automatic hot die casting device, which has a high degree of automation, less manual intervention, and can automatically complete operations such as mold clamping, demoulding, and unloading, with high work efficiency. , the labor intensity is low.

To achieve the above object, the present invention adopts the following technical solutions:

In a first aspect, an embodiment of the present invention provides a multi-station automatic hot die casting device, characterized in that it includes:

Die casting mechanism: including an upper mold assembly and a lower mold assembly, the upper mold assembly includes a first worktable that can move vertically, the first worktable is fixedly connected with a cavity plate, the cavity plate has a cavity, and the cavity includes The gate part and the forming part are provided with an upper mold that can move vertically above the cavity plate; The push plate is provided with a mandrel that can extend into the gate, and the edge of the mandrel is provided with a chamfer. The lower mold assembly includes a second worktable that can move vertically, and the second worktable is fixed with a lower mold with a gate ;

Grouting mechanism: used to inject slurry into the gate of the lower die;

Unloading mechanism: including a first bracket, the first bracket is connected with the first driving mechanism capable of driving it to move to the bottom of the cavity plate, and also includes a second bracket, the second bracket is connected with the first bracket capable of driving it to move to The second drive mechanism below the lower die is connected.

Beneficial effects of the present invention:

1. In the automatic hot die casting device of the present invention, both the first worktable and the second worktable can move vertically, thereby realizing the automatic fitting and separation of the cavity plate and the lower mold, thereby realizing the automatic completion of mold clamping and Demoulding, without manual participation, high degree of automation, high production efficiency, improved product quality, reduced labor intensity of staff, and improved production safety.

2. The automatic hot die casting device of the present invention, because the mandrel has a chamfer, cooperates with the gate in the lower mold to form a small grouting port, which accelerates the slurry from the runner to quickly fill the cavity and fill the cavity. Die easy.

3. The automatic hot die casting device of the present invention has a first bracket and a first drive mechanism, and the vertical movement of the first worktable and the second worktable can make the first tray move under the action of the first drive mechanism Just below the cavity plate, the upper mold drives the ejector rod to move in the cavity, and the die-cast blanks can be ejected and dropped into the first tray, realizing automatic unloading, high production efficiency, and reduced staff. It has a second bracket and a second drive mechanism. The second bracket moves to just below the lower mold. At this time, the gate push plate is pressurized and descended under the action of the gate push plate cylinder, and the pouring of the lower mold is lowered. The grouting waste in the mouth is pushed out to complete the cutting of the grouting mouth, and the waste can fall into the second bracket to realize the collection of the waste.

Description of drawings

The accompanying drawings that constitute a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute a limitation to the present application.

1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of a die-casting mechanism in Embodiment 1 of the present invention;

FIG. 3 is a partially enlarged schematic diagram of the joint of the lower mold assembly and the upper mold assembly in Embodiment 1 of the present invention;

FIG. 4 is a partially enlarged schematic diagram of the joint of the injection nozzle and the lower mold assembly in Embodiment 1 of the present invention;

FIG. 5 is a schematic structural diagram of an upper die assembly according to Embodiment 1 of the present invention;

6 is a schematic diagram of an explosion structure of an upper die assembly in Embodiment 1 of the present invention;

7 is a schematic structural diagram of a lower die in Embodiment 1 of the present invention;

FIG. 8 is a top view of the lower mold structure in Embodiment 1 of the present invention;

9 is a schematic structural diagram of a cavity plate according to Embodiment 1 of the present invention;

FIG. 10 is a top view of the cavity plate according to Embodiment 1 of the present invention;

11 is a schematic structural diagram of the upper die in Embodiment 1 of the present invention;

Fig. 12 is the bottom view of the upper die structure of Embodiment 1 of the present invention;

Fig. 13 is the partial enlarged schematic diagram of the ejector rod in Example 1 of the present invention;

FIG. 14 is a schematic structural diagram of a core board according to Embodiment 1 of the present invention;

Fig. 15 is the bottom view of the core plate structure of the embodiment 1 of the present invention;

Fig. 16 is a partial enlarged schematic diagram of part I in Fig. 15 in Embodiment 1 of the present invention;

Fig. 17 is a side view of the core plate according to Embodiment 1 of the present invention;

18 is a schematic structural diagram of a gate push plate in Embodiment 1 of the present invention;

19 is a schematic structural diagram of a fixing plate in Embodiment 1 of the present invention;

20 is a schematic structural diagram of a gate plate in Embodiment 1 of the present invention;

21 is a schematic cross-sectional view of a shunt channel in Embodiment 1 of the present invention;

22 is a schematic diagram of the assembly of a lubrication channel and a needle valve oil cup in Embodiment 1 of the present invention;

23 is a schematic structural diagram of the unloading mechanism in Embodiment 1 of the present invention;

24 is a schematic structural diagram of the first driving mechanism in Embodiment 1 of the present invention;

25 is a schematic structural diagram of the second driving mechanism in Embodiment 1 of the present invention;

26 is a schematic structural diagram of a grouting mechanism in Embodiment 1 of the present invention;

27 is a front view of the overall structure of Embodiment 1 of the present invention;

28 is a schematic structural diagram of a blank piece processed in Example 2 of the present invention;

Among them, 1. die-casting mechanism, 2. unloading mechanism, 3. grouting mechanism, 4. blank;

101. The first worktable, 102. The guide sleeve, 103. The guide rod, 104. The bottom plate, 105. The fixed plate, 106. The second spacer, 107. The core plate, 108. The first spacer, 109. The cavity Plate, 110. Pin, 111. Upper die, 112. First demoulding cylinder, 113. Second demolding cylinder, 114. Gate push plate, 115. Gate push plate driving cylinder, 116. Guide column, 117. The first workbench lift cylinder, 118. The third workbench, 119. The second workbench, 120. The first lift cylinder of the second workbench, 121. The second lift cylinder of the second workbench, 122. Lower die, 123. Copper plug, 124. Needle valve oil cup, 125. Water tank, 126. Circulating water pump;

201. Supporting plate, 202. Fixed spindle, 203. The first rack drive cylinder, 204. The first rack, 205. The first rack guide groove, 206. The first gear, 207. The first tray, 208. The second rack drive cylinder, 209. The second rack, 210. The second rack guide groove, 211. The second gear, 212. The second tray;

301. Gate push plate, 302. Main runner bushing, 303. Nozzle, 304. Grouting pipe, 305. Slurry bucket, 306. Slurry, 307. Cover, 308. Rubber gasket, 309. Oil Bath box, 310. Oil, 311. Electric heating tube holder, 312. Electric heating tube, 313. Slurry outlet end cap, 314. Electric heating device, 315. Thermocouple, 316. Control box, 317. Hand hole end cap, 318. Hand hole end cover sealing ring, 319. Hand hole end cover pressing screw, 320. Transverse clamping block, 321. Rotary push rod;

10901. Cavity, 10902. Cavity plate cooling channel, 12201. Gate, 12202. Lower template cooling channel, 20701. First bracket, 20702. First tray frame, 20703. Third drive cylinder, 21201. Second Bracket, 21202. Second tray frame, 21203. Fourth drive cylinder, 30101. Main flow channel, 30102. Split flow channel.

Detailed ways

In Example 1 of a typical implementation of the present application, as shown in Figures 1-27, a multi-station automatic hot die casting device includes a support I-20, and a die casting mechanism 1 is installed on the top surface of the support One side of the die-casting mechanism is provided with a discharge mechanism 2, the discharge mechanism is installed on the top surface of the support, and a grouting mechanism 3 is provided inside the support below the die-casting mechanism.

The die-casting mechanism includes an upper die assembly and a lower die assembly capable of vertical movement.

The upper die assembly includes a first worktable 101 that can use the first driving member to perform vertical lifting and lowering motion, and four corners of the first worktable are provided with guide sleeves 102, and the guide sleeves are vertically disposed through an axis. The guide rod 103, the bottom end of the guide rod is provided with a boss, and two limit ribs are arranged between the boss and the guide rod, and the limit ribs are inserted into the limit slots provided on the bottom plate 104, The bottom plate is fixed on the top surface of the support, and the rotation of the guide rod around its own axis is prevented by the cooperation of the limit slot and the limit rib, and the fixed connection between the guide rod and the bottom plate is realized, and the guide rod can be used for the first workbench. Movement is directed.

The bottom surface of the first workbench is fixedly connected with the fixing plate 105, and the bottom surface of the fixing plate is connected with the core plate 107 through the second spacer block 106, and the second spacer block is arranged on the two side positions of the bottom surface of the fixed plate. The bottom surface of the core plate is fixedly connected to the cavity plate 109 through the first spacer block 108. The first spacer block is arranged on both sides of the bottom surface of the core plate, and pins are provided between the four corners of the cavity plate and the core plate. 110, used for positioning the assembly between the cavity plate and the core plate, and the pins protrude below the cavity plate for matching with the lower mold assembly.

The cavity plate is provided with a plurality of cavities 10901. In this embodiment, there are twelve cavities. The cavity includes a gate portion and a molding portion located on both sides of the gate portion. The shapes of the die-cast blanks are matched, the gate portion is used for the inflow of the slurry, and the cavity plate is also provided with pin positioning holes for connecting with the pins.

An upper die 111 is arranged between the cavity plate and the core plate, twelve sets of ejector pins are arranged on the bottom surface of the upper die, two ejector pins are arranged in each group, and the upper die positions between the ejector pins of the same group are provided with For the through hole of the first mandrel, the position and shape of the ejector pins of the same group match the positions and shapes of the two molding parts of the same cavity, and the ejector pins extend into the molding parts of the cavity as the top surface of the program space. The edge of the bottom surface of the top rod has a circular arc transition surface inclined toward the center of the top rod, and each top rod is provided with four core holes for the core rod to pass through.

In order to enable the upper film to move up and down independently, the two ends of the upper mold are respectively connected with two second driving members, the second driving members are used to drive the lifting movement of the upper film, and the two second driving members are the first and second driving members respectively. A demoulding cylinder 112 and a second demoulding cylinder 113, both of which are fixed on the first worktable. The piston rods of the first demolding cylinder and the second demolding cylinder are respectively hinged with the two end positions of the upper film.

A gate push plate 114 is arranged between the core plate and the fixed plate. Twelve mandrels are arranged on the bottom surface of the gate push plate. The shape of the mandrel matches the shape of the gate portion. The second mandrel through hole and the first mandrel through hole pass through the core plate and the upper mold in sequence and extend into the gate portion of the cavity.

In order to enable the gate push plate to achieve an autonomous lifting motion, the gate push plate is connected to a third drive member fixed on the first worktable, and the third drive member is used to drive the gate push plate to move up and down. The driving part adopts the gate push plate driving cylinder 115, the gate push plate driving cylinder is arranged between the first demolding cylinder and the second demolding cylinder, and the piston rod of the gate push plate driving cylinder is connected with the gate push plate.

In order to cooperate with the gate in the lower mold to form a small grouting port to accelerate the slurry from the runner to quickly fill the cavity, the mold filling is easy, and the bottom edge of the mandrel is provided with a chamfer.

In order to make the lifting movement of the upper film and the gate push plate to be carried out smoothly, the cavity plate is fixedly connected with the bottom end of the guide column 116, and the top end of the guide column passes through the upper mold, the core plate, and the gate push plate in sequence. Fixed with fixing plate. The guide column is used to guide the movement of the upper mold and the gate push plate.

In this embodiment, the first worktable needs to be moved up and down. Since the gate push plate cylinder is installed in the middle of the first worktable, it is inconvenient for the first drive member to drive the first worktable to move up and down. The worktable is connected. In this embodiment, the cylinder of the gate push plate cylinder is connected to the first driving member, so as to realize the connection between the first worktable and the first driving member, and the first driving member adopts the first driving member. The table lifting cylinder 117, the piston rod of the first table lifting cylinder is hinged with the cylinder body of the gate push plate cylinder, the first table lifting cylinder is fixed on the third table 118, and the third table is fixed to the top of the guide rod.

Further, in order to rapidly form the workpiece, the cavity plate is also provided with five cavity plate cooling water channels 10902, and the cavity plate cooling water channels are connected by hoses to form a cooling water circuit. The cooling water channel has a water inlet and a water outlet.

The lower die assembly includes a second workbench 119, the second workbench is located below the first workbench, and four corners of the second workbench are provided with guide sleeves, which are fixedly connected to the second workbench, The second worktable can move vertically along the guide rod through the guide sleeve.

In order to enable the second worktable to move up and down autonomously, the second worktable is connected to the fourth driving member, and the fourth driving member adopts the first lifting cylinder 120 of the second worktable and the second lifting and lowering of the second worktable Cylinder 121, the second worktable is connected with the piston rod of the first lifting cylinder of the second worktable and the second lifting cylinder of the second worktable, and the first lifting cylinder of the second worktable and the second lifting cylinder of the second worktable are fixed On the support, two lifting cylinders are used to ensure the stability of the lifting of the second worktable.

There is a lower mold 122 in the center of the second worktable. The lower mold is provided with twelve gates 12201. The gate positions are aligned with the gate portion of the cavity. Both sides of the gate are provided with blanks to be processed. piece to match the core boss.

In this embodiment, the lower mold is provided with a lower template cooling water channel 12202, and the cooling water channel is connected by a hose to form a cooling circuit. The lower mold is also provided with a lower template positioning hole, and the lower template positioning hole can extend with the pin 110. The parts that come out to the bottom of the cavity plate are matched to position the mold clamping, and the top edge of the positioning hole is provided with a chamfer to facilitate mold clamping.

In this embodiment, in order to make the lifting motion of the first workbench and the second workbench go smoothly, the first workbench and the second workbench are both provided with lubricating oil passages, and the lubricating passages are provided with two lubricating oil passages. The position of the channel and the guide sleeve are aligned, and both ends of the lubricating oil channel are blocked by copper plugs 123. The copper plugs are threadedly connected to the first workbench and the second workbench, and the top surfaces of the first workbench and the second workbench are both The needle valve type oil cup 124 is threadedly connected, and the needle valve type oil cup is connected with the lubricating passage. Lubricating oil can be added to the lubricating oil passage through the needle valve type oil cup, which can lubricate the guide sleeve in time and reduce wear.

In this embodiment, the two cooling water channels are both connected to the water supply mechanism, and the water supply mechanism can pass cooling water into the lower mold and the cavity plate through the cooling water channels to rapidly cool the cavity plate and the lower mold, which is convenient for the rapidity of the blanks. stereotypes.

The water supply mechanism includes a water tank 125, the water tank is fixedly connected with the circulating water pump 126, the circulating water pump is connected with the water inlet of the double three-way 128 through the pipeline, the double three-way is fixed on the support, and one of the horizontal water outlets of the double three-way is connected. It is connected with the water inlet of the cooling water channel as the cavity plate through the pipeline, and the other vertical water outlet is connected with the water inlet of the cooling water channel of the lower film through the pipeline. The outlet of the double tee is connected to the two return ports, and is connected to the water tank through the pipeline. The cooling water in the water tank can enter the double tee under the action of the circulating pump. After entering the lower mold, it enters the cavity plate all the way, and the cooling water flowing out of the lower mold and the cavity plate flows back to the water tank through the outlet of the double tee through the return port and then flows back to the water tank, realizing the recycling of water.

The unloading mechanism 2 is arranged on one side of the die-casting mechanism, fixed on the top surface of the support, and includes a support plate 201 , which is fixedly connected to the support, and one end of the support plate is connected to the bottom of the fixed mandrel 202 . A first drive mechanism and a second drive mechanism arranged up and down are installed on the support plate, the first drive mechanism is connected with the first tray, and the second drive mechanism is connected with the second tray.

The first tray is used to receive the pulp port waste, the first drive mechanism includes a first unloading drive, and the unloading drive adopts a first rack-driven cylinder 203, and the first rack-driven cylinder is fixed on the support plate , the piston rod of the first rack drive cylinder is hinged with the first rack 204, the first rack is slidably connected with the first rack guide groove 205, the first rack guide groove is fixedly connected with the support plate, the first rack The rack is meshed with the first gear 206, the first gear is rotatably connected with the fixed mandrel, the edge of the first gear is fixedly connected with one end of the first connecting piece, and in this embodiment, it is connected with the edge of the first rack The first connecting piece adopts an obtuse V-shaped structure, including a first connecting part and a second connecting part arranged at an obtuse angle, the end of the first connecting part is fixedly connected with the first gear, and the second connecting part is fixed with the first connecting part. A tray 207, the first tray includes a first bracket 20701 and a first tray frame 20702, the second connecting part is fixedly connected to the first bracket, and the top surface of the second connecting part is provided with a pusher driver, so The pusher driving member adopts a third driving cylinder 20703, and the third driving cylinder is fixed with the second connecting part. The piston rod of the third cylinder is connected to the first tray frame 20702, the first tray frame can be set at the edge of the first tray, and the third cylinder can drive the first tray frame to move, thereby pushing out the materials on the first tray.

The second drive mechanism includes a second unloading drive, the second unloading drive adopts a second rack drive cylinder 208, the second rack drive cylinder is fixed on the support plate, the second gear The piston rod of the rack driving cylinder is hinged with the second rack 209, the second rack is slidably connected with the second rack guide groove 210, and the second rack guide groove is fixedly connected with the support plate. The second rack is meshed with the second gear 211, the second gear is rotatably connected with the fixed spindle, the edge of the second gear is fixedly connected with the second connecting piece, and the second connecting piece adopts an L-shaped structure , including a vertically arranged third connection part and a fourth connection part, the third connection part is fixedly connected with the edge position of the second gear, and the fourth connection part is fixedly connected with the second tray 212, the second tray includes a second bracket The frame 21201 and the second tray frame 21202, the second bracket is fixedly connected with the fourth connecting part, and the fourth connecting part is also provided with a pusher driver, and the pusher driver adopts a fourth drive cylinder 21203 , the piston rod of the fourth cylinder is connected with the second tray frame 21202, the second tray frame can be set at the edge of the second tray, the fourth cylinder pushes the second tray frame to move, and can push the material in the second tray out .

The grouting mechanism includes a gate plate 301, and the bottom surface of the gate plate is connected with the bottom plate.

A runner is opened on the surface of the gate plate. The runner includes a main flow channel 30101 and a branch flow channel 30102. The main flow channel is located at the center of the gate plate, and the branch flow channels are symmetrically arranged on both sides of the main flow channel, which can make the main flow channel The slurry from the channel reaches each gate evenly and fills each cavity at the same time. The cross-section of the runner is trapezoidal, which is convenient for processing, and the compact arrangement of the runner reduces the size of the mold and shortens the stroke, so that the slurry reaches each gate. Temperature and pressure loss are reduced to a minimum.

The sprue plate can be in contact with the lower mold fixed on the second table through the opening in the center of the second table, and the end of the runner is aligned with the gate of the lower mold, so that the slurry in the runner can enter the runner mouth.

The central part of the sprue plate is provided with a main runner bushing 302, the main runner bushing is communicated with the main runner, the main runner bushing is pressed and fixed on the sprue plate, and a main runner bushing is provided below the main runner bushing. The injection nozzle 303, the injection nozzle is fixed on the bottom plate, the injection nozzle is communicated with the main runner bushing, the slurry in the injection nozzle can enter the main runner through the main runner bushing, and the main runner in the main runner bushing is conical Type, height is small, the cross section is round to facilitate the removal of condensate in the flow channel, and the pressure loss is small, and the loss of slurry is small.

The spray nozzle is connected to one end of the grouting pipe 304, and the other end of the grouting pipe extends into the slurry bucket 305, which is arranged inside the support and used to hold the slurry 306. The top of the slurry bucket is connected to the cover 307. Fixed connection, a rubber gasket 308 is arranged between the top cover and the top of the slurry barrel, which is used for sealing between the top cover and the slurry barrel. The slurry barrel is located in the oil bath box 309, and the oil bath box is used to hold the oil 310. , the top of the oil bath tank is fixedly connected with the top cover, the space between the material barrel and the oil bath tank is provided with an electric heating pipe fixing seat 311, the electric heating pipe fixing seat is fixedly connected with the top cover, and the four corners of the electric heating pipe fixing seat are provided with The heating element adopts the electric heating pipe 312, which is fixedly connected with the electric heating pipe fixing seat. The electric heating pipe can heat the oil in the oil bath box, so that the slurry in the slurry tank is kept warm and avoids the slurry solidification. The uniformity of the slurry is ensured, thereby ensuring the molding quality. The grouting pipe is fixedly connected with the end cover 313 of the slurry outlet, and the part of the outer periphery of the grouting pipe close to the end cover is sheathed with an electric heating device 314 to prevent condensation and blockage of the slurry. The top cover part between the slurry barrel and the oil bath is also threadedly connected with a thermocouple 315, the function of which is to convert the temperature signal of the oil in the oil bath into a thermoelectromotive force signal, which is converted into a thermoelectromotive force signal by an electrical instrument (secondary instrument). The temperature of the oil is displayed on the control box 316, which is fixed to the top surface of the pedestal. The top cover is also provided with a hand hole, through which material is added and washed in the material bucket of the hand hole box. The hand hole is provided with a hand hole end cover 317, and a hand hole end cover and a top cover are provided between the hand hole end cover and the top cover. The hand hole end cover sealing ring 318, the hand hole end cover is pressed by the hand hole end cover pressing screw 319, the hand hole end cover pressing screw is threadedly connected with the transverse clamping block 320, and the two ends of the transverse clamping block are connected with each other through the chute. The limit rod fixed on the top cover is slidably connected, the top of the hand hole end cover pressing screw passes through a rotary push rod 321, and the hand hole end cover is rotated by the rotary push rod to press the screw rod, and the lateral clamping block moves up along the limit rod, Until it touches the limit boss at the top of the limit rod, at this time, the lateral clamping block cannot continue to move upward. Continue to rotate the hand hole end cover pressing screw. The hand hole end cover pressing screw has a tendency to move downward. The end cap is pressed against the top cap. When removing the hand hole end cover, rotate the hand hole end cover to compress the screw in the opposite direction. At this time, the lateral clamping block moves down until it contacts with the hand hole end cover and cannot move further. Continue to rotate the hand hole end cover to compress the screw. The hole end cover pressing screw moves upward until it is separated from the lateral clamping block. At this time, it contacts the pressing state of the hand hole end cover, remove the transverse clamping block, and use a tool to pry open the hand hole end cover to complete the opening of the hand hole.

The slurry barrel is connected to an external compressed air source through a compressed air pipe installed with a solenoid valve. The external compressed air source can inject compressed air into the slurry barrel through the solenoid valve, and press the slurry into the grouting pipe. The solenoid valve is connected with the control. The box is connected, and its work is controlled by the control box.

In this embodiment, all the working cylinders, circulating water pumps, solenoid valves, thermocouples, electric heating pipes, electric heating devices and other components are connected to the control box, and the control box controls them to work automatically.

Example 2:

This embodiment discloses the working method of the multi-station automatic hot die casting device described in Embodiment 1:

In the initial state, the third worktable is located above the gate plate and maintains a set distance, the cavity plate and the lower mold are in a separated state, the gate push plate and the fixed plate are in a fit state, and the upper mold and the core plate are in a fit state status, this position is a station.

Under the control of the control box, compressed air is input into the air intake cavity of the lifting cylinder of the first worktable to push the first worktable downward, while the first lifting cylinder of the second worktable and the exhaust chamber of the second lifting cylinder of the second worktable are input Compressed air, the third table goes down, the cavity plate is attached to the lower mold, the lower mold is attached to the gate plate, and the mold is closed. The cavity wall of the cavity, the bottom surface of the ejector pin, the upper surface of the lower mold, and the core convex The table and the core rod form a cavity for grouting. This position is the second station. The control core rod extends into the cavity of the cavity, and the bottom is flush with the bottom surface of the cavity. Because the edge of the bottom surface of the core rod has a chamfered structure , By cooperating with the gate in the lower mold, a small grouting port is formed, which accelerates the slurry from the runner to quickly fill the cavity, and the mold filling is easy. Because the size of the gate is much smaller than that of the cavity, after the cavity is filled with slurry, the gate can be quickly cooled and closed to prevent the backflow of the slurry, and it is also easy to separate the gate condensate from the blank. In addition, the small gate has greater frictional resistance to the melt, resulting in a significant increase in melt temperature, a decrease in viscosity, and an increase in fluidity, which is conducive to the formation of thin-walled complex products and the obtaining of clear-shaped blanks; the small gate has It is conducive to the separation of the runner condensate and the blank, and it is convenient to automatically cut off the gate, so as to facilitate the correction of the blank, and the traces are small; the small gate shortens the molding cycle and improves the production rate. The small gate can control and shorten the packing and packing time to reduce the internal stress of the blank and prevent deformation and cracking.

The air intake chamber of the lifting cylinder of the first worktable, the exhaust chamber of the first lifting cylinder of the second worktable, and the exhaust chamber of the second lifting cylinder of the second worktable continue to maintain the pressure-holding state, the solenoid valve is opened, the compressed air is injected into the slurry barrel, and the slurry After passing through the grouting pipe, the nozzle, the main runner bushing, the main runner and the runner, it enters the cavity, completes the die casting, and forms the blank 4. The blank structure is shown in Figure 28, and it is a three-station at this time.

The first lifting cylinder of the second worktable and the second lifting cylinder of the second worktable input compressed air into the intake cavity, and the exhaust cavity of the lifting cavity of the first worktable input compressed air, so that the first worktable and the second worktable are simultaneously upward Move to the set position and keep the mold clamping state unchanged. At the same time, the air inlet cavity of the second rack driving cylinder enters compressed air, the second rack pushes the second gear to rotate 90°, and the second bracket moves until the lower mold is positive. Below, at this time, the gate push plate is pressurized and descended under the action of the gate push plate cylinder to push out the slurry port waste in the gate of the lower mold to complete the removal of the grouting port. At the same time, the second rack drives the cylinder exhaust cavity for input. Compressed air, the second rack pushes the second gear to rotate 90° in the opposite direction to take away the waste from the pulp port, and then the air intake chamber of the fourth driving cylinder enters the compressed air, pushes the frame of the second tray to slide, and pushes the second tray into the second bracket. At the same time, the fourth driving cylinder is reset, at this time it is a four-station.

The first worktable lifts the cylinder exhaust cavity to input compressed air, the first worktable moves up, the cavity plate is separated from the lower mold, and the demoulding is completed. At this time, it is five stations.

The first rack drive cylinder pushes the first rack to move and drives the first gear to rotate, so that the first bracket is located under the cavity plate, and at the same time, the upper mold is pushed down by the first and second demolding cylinders. , push the die-cast blanks out of the cavity and fall into the first bracket, the first rack drives the cylinder to push the first rack to move, drives the first gear to rotate in the reverse direction, and takes the blanks and the first bracket away , and then the third driving cylinder pushes the frame of the first tray to slide, pushes the blanks away, and the piston rod of the third driving cylinder is reset. At this time, it is six stations. So far, the entire die-casting process is completed, that is, the six stations are completed in turn. The six processes of mold, grouting, pressure keeping, cutting grouting, demoulding, and embryo release are completed automatically by hot die casting. The high degree of automation and high production efficiency greatly reduce the labor intensity of the staff.

Although the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, they do not limit the scope of protection of the present invention. Those skilled in the art should understand that on the basis of the technical solutions of the present invention, those skilled in the art do not need to pay creative work. Various modifications or deformations that can be made are still within the protection scope of the present invention.

Claims (10)

1. The utility model provides an automatic hot die-casting device of multistation which characterized in that includes:

die-casting mechanism: the die comprises an upper die assembly and a lower die assembly, wherein the upper die assembly comprises a first workbench capable of moving vertically, the first workbench is fixedly connected with a die cavity plate, the die cavity plate is provided with a die cavity, the die cavity comprises a gate part and forming parts on two sides of the gate part, an upper die capable of moving vertically is arranged above the die cavity plate, the upper die is provided with an ejector rod extending into the forming part, a gate push plate capable of moving vertically is arranged above the upper die, the gate push plate is provided with a core rod capable of extending into the gate part, the edge of the bottom end of the core rod is provided with a chamfer, the lower die assembly comprises a second workbench capable of moving vertically, and the second workbench is fixedly provided with a lower die with a gate;

grouting mechanism: used for injecting slurry into the cavity;

the unloading mechanism comprises: the device comprises a first bracket and a second bracket, wherein the first bracket is connected with a first driving mechanism capable of driving the first bracket to move to the lower part of a cavity plate, and the second bracket is connected with a second driving mechanism capable of driving the second bracket to move to the lower part of a lower die;

the first driving mechanism and the second driving mechanism are installed on a fixed supporting plate and comprise discharging driving pieces, the discharging driving pieces are fixed on the supporting plate and connected with racks, the racks are connected with the supporting plate in a sliding mode and meshed with gears, the gears are connected with fixed mandrels fixed on the supporting plate in a rotating mode, the edges of the gears are connected with one ends of the connecting pieces, the connecting pieces of the first driving mechanism are connected with a first bracket, and the connecting pieces of the second driving mechanism are connected with a second bracket.

2. A multi-station automatic hot press casting apparatus as claimed in claim 1, wherein the cavity plate is fixedly connected to a core plate disposed above the cavity plate, twelve sets of core rods are provided on a bottom surface of the core plate, the core plate is fixed to a first table, the first table is connected to a first driving member fixed to a third table, the third table is fixedly disposed, the upper mold is disposed between the cavity plate and the core plate, the upper mold is connected to a second driving member fixed to a second table, the second driving member is capable of driving the upper mold to move, thereby driving the ejector rod to move within the cavity.

3. A multi-station automatic hot press casting device as claimed in claim 2, wherein pins are provided between the four corners of the cavity plate and the core plate, the pins extend below the cavity plate, and the portions of the pins extending below the cavity plate can be matched with the positioning holes of the lower die plate of the lower die to perform die closing and positioning.

4. A multi-station automatic hot press casting apparatus as claimed in claim 1, wherein the gate pusher is connected to a third drive member provided on the first table, the third drive member being capable of driving the core rod into the gate.

5. A multi-station automatic hot die-casting apparatus according to claim 1, wherein the cavity plate and the lower die are provided with cooling water passages, and the cooling water passages are connected to a water supply mechanism capable of supplying cooling water to the cooling water passages.

6. A multi-station automatic hot press casting apparatus as claimed in claim 1, wherein the connecting members of the first driving mechanism and the second driving mechanism are fixed with pushing driving members, and the pushing driving members are connected to the tray frames and can drive the tray frames to move so as to push out the materials on the first tray and the second tray.

7. A multi-station automatic hot die casting device according to claim 1, wherein the grouting mechanism comprises a slurry barrel and a gate plate, the slurry barrel is connected with an external compressed air source through a compressed air pipe provided with an electromagnetic valve, the slurry barrel is connected with the gate plate through a grouting pipe, the gate plate is provided with a pouring gate communicated with the grouting pipe, and the pouring gate can be communicated with the pouring gate.

8. A multi-station automatic hot press casting apparatus as claimed in claim 7, wherein the runner includes a main runner and a sub-runner, the gate plate is provided with a main runner liner, the main runner liner is in communication with the main runner, the main runner liner is also in communication with a jet nozzle, and the jet nozzle is connected to the slip casting pipe.

9. A multi-station automatic hot die-casting apparatus as claimed in claim 8, wherein said runners are trapezoidal in cross-section.

10. A multi-station automatic hot die-casting device as claimed in claim 1, wherein the first and second stations are provided with two lubricating oil passages, two ends of each lubricating oil passage are sealed by copper plugs, and the top surfaces of the first and second stations are respectively connected with needle valve type oil cups in a threaded manner, and the needle valve type oil cups are communicated with the lubricating passages.

Images