• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An arrangement incorporated with a mold for use in a die casting machine or an injection mold machine comprising: a gas vent passage formed in the mold communicating with a cavity of the mold; two symmetrical by-pass passages branched from the gas vent passage; a gas discharge passage communicating with the outside of the mold; and valve means including a valve chamber formed in the mold having a valve located therein and communicating with the above-mentioned passages. The valve in a first position cooperates with the valve chamber to prevent the gas vent passage from communicating with the gas discharge passage, but prevents both the gas vent passage and the by-pass passages from communicating with the gas discharge passage when in a second position. A portion of the melt forced to flow from the cavity through the gas vent passage upon impingement of that portion of the melt against the valve drives the valve from the first position to the second position before any of the melt forced to flow through the by-pass passages reaches the valve chamber.
    公开号:SU1082311A3
    申请号:SU802986747
    申请日:1980-09-26
    公开日:1984-03-23
    发明作者:Такесима Такахико；Мацуи Мицудзи；Уеки Тадаси；Уено Цунео
    申请人:Убе Индастриез Лтд (Фирма)；
    IPC主号:
    专利说明:

    2. The device according to claim 1, p. T l and
    Since the bypass channels are arranged symmetrically, the angle between the axes of the ventilation channel and each bypass channel is not more than 90 °.
    3. The device according to claim 1, wherein the valve movement actuator is terminated as a hydraulic cylinder mounted on a fixed half-form, the valve pressing device being in the form of a coil spring disposed between the valve and the piston of the hydraulic cylinder; the valve is made in the form of a disk and equipped with a shank, and the pressing device is made in the form of a cylindrical body with a bell-shaped Tip, a jumper and a rear cylindrical chamber, the valve shank passing through the jumper, and a valve seat is made at the end of the bell-shaped pinch,
    4. The device according to claim 3, characterized in that at least one opening is provided in the side wall of the bell-shaped tip.
    5. A pop-up device, 4, characterized in that an annular groove is made in the form, connecting the opening in the side wall of the code-cap to the channel for the discharge of gases.
    6. A device according to claim 3, characterized in that the coil spring is housed in a bell-shaped tip between the valve and the bridge.
    7. The device according to claim 3, characterized in that the spiral spring is located between the valve stem and the rear cylindrical chamber.
    8. The device according to claim 1, characterized in that the valve is made in the form of a hollow cylinder with a front closed end and a radial, annular protrusion at the open end installed in the hole of the fixed half-form with the possibility of interaction with the half-form, the radial annular protrusion, the valve body is fixed to the fixed half-form is made with a gas outlet and its inner surface serves as a valve seat, the valve pressing device being made in the form of a spiral spring placed between the front closed to ntsom klapatga and the housing,
    9. The device according to claim 8, characterized in that a hole is made in the side wall of the valve connecting the bypass channel to the internal cavity of the valve.
    10. The device according to claim 8, is about the fact that an annular groove is formed on the outer surface of the valve, connecting the bypass channel through the side openings with the internal cavity of the valve.
    A device according to claim 8, characterized in that an annular groove is made on the outer surface of the valve, connecting the bypass channel to the channel for releasing gas from the molds.
    12. The device according to claim 1, characterized in that the internal cavity of the valve is connected via a pressure reducing valve to a pressure source.
    13. The device according to paragraphs. 1, 2 and 3, characterized in that the valve axis is arranged perpendicular to the axis of the Form.
    14. The device according to paragraphs. 1,2,8,9,10, 11 and 12, characterized in that the valve axis is arranged parallel to the form axis,
    15. The device according to claim 14, characterized in that the front face of the valve is parallel to the shape connector, and the surface of the half-form facing the valve is inclined to the valve face.
    16. A device in accordance with claim 15, characterized in that the bypass channels are located in a plane perpendicular to the axis of the mold, and the ventilation channel is inclined to this plane.
    17. The device according to claim 15, wherein the ventilation channel is located in a plane perpendicular to the shape axis, and each of the bypass channels is inclined to this plane.
    18. The device according to claim 14, characterized in that the end surface of the valve is made conical, and a part of the surface of the half-form facing the valve is made perpendicular to the shape of the axis, while the ventilation duct is located
    10823
    parg) llel () But the surface of Lorma, and the bypass channel - obliquely towards it. 19. The device according to claim 3, about the t i l and y 1C e e. So that the disc-shaped valve B 1 is filled with the same material as the casting.
    PRIORATION
    п у нп о т and m:
    09/27/79 in paragraphs 1-6,
    5-11,13 and 19;
    06.03.80 in PP. 1-2, 8-12,14 and And 07.03.80 on PP. 1-11, 13 and 19.
    The invention relates to foundry, in particular to injection molding.  The closest to the invention in technical essence and the achieved result is a ventilation device for Lorma to pour under pressure, containing a ventilation channel, made in shape and Associated with the working cavity, its channel for gas release, associated with the atmosphere or with a suction system, a valve in the form of a disk, an axially movable body with a valve seat, a valve pressing device and a valve displacement actuator.  Compressed air pressure 1} is used as a drive.  A disadvantage of the known device is that the melt passing through the vent is directed perpendicular to the valve axis and does not act on it, therefore a special actuator is required to close the valve. The object of the invention is to simplify the design of the device and improve the quality of the castings.  This goal is achieved by the fact that a ventilating device for a mold, consisting of a movable and fixed half-form, containing a ventilation channel made along its shape and associated with the atmosphere or with a suction system, is installed movably in the axial direction, the housing, with the valve seat, the valve pressing device and the drive for moving it, is provided with at least one bypass channel branching from the ventilation channel and adjacent to the valve.  pan saddle, while the bypass channel is located in the plane of the connector form.  In addition, the bypass channels are arranged symmetrically, with the angle between the axes of the ventilation channel and each bypass channel being no more than 90 °.  The actuator of the valve movement is made in the form of a hydraulic cylinder mounted on a fixed half-form, moreover, the device for pressing the valve is made in the form of a coil spring placed between the valve and the piston of the hydraulic cylinder; the valve is made in the form of a disk and provided with a shank, and the pressing device is made in the form of a cylindrical body with a bell-shaped tip, a jumper and a rear cylindrical chamber, with the valve stem passed through the jumper, and a valve seat is made at the end of the bell-shaped tip.  In the side wall of the bell-shaped tip is made of at least one hole for the withdrawal of gases.  An annular groove is formed in the form, which connects the opening in the side wall of the bell-shaped tip with a channel for gas release.  The coil spring is located in the bell-shaped tip between the valve and the bridge.  A coil spring is located between the valve stem and the rear cylindrical chamber.  The valve is made in the form of a hollow cylinder with a front closed end and a radial annular protrusion at the open end installed in the opening of the fixed half-form with the possibility of interaction with the half-form with a radial annular protrusion, the valve body is fixed on the fixed semi-form, made with an opening for gas release and its inner surface serves valve seat, with 3 valve clamping device made in the form of a coil spring placed between the front end of the valve end and the body, In the side wall The valve has a hole connecting the bypass to the internal cavity of the valve.  An annular groove is made on the outer surface of the valve, connecting the bypass channel through the side opening to the internal cavity of the valve.  An annular groove is made on the outer surface of the valve, connecting an overflow channel with a channel for gas injection of forms.  The internal cavity of the valve is connected via a pressure reducing valve to a pressure source.  Moreover, the valve axis is placed perpendicular to the form axis, or the valve axis is arranged parallel to the form axis.  Front valve end. made parallel to the connector of the form, and the surface of the half-form facing the valve is inclined to the end of the valve.  The bypass ducts are located in a plane perpendicular to the axis of the mold, and the ventilation duct is inclined to this plane.  The ventilation channel is located in a plane perpendicular to the axis of the shape, and each of the bypass channels is inclined to this plane.  The end surface of the valve is conical, and a part of the surface of the half-form facing the valve is perpendicular to the axis of the form, with the vent channel parallel to this surface of the form, and the overflow channel is inclined to it.  The disc valve is made of the same material as the casting.  FIG.  1 shows a first variant of the device, a longitudinal section; FIG. 2 is a sectional view of FIG. 1; Figure 3–5 shows the continuity of valve operation during metal insertion; Fig. 6 shows the sequence of operation of the valve after the introduction of the metal; Fig, 7 is a second variant of the device, a longitudinal section; in fig.  8 is a section BB in FIG.  7; in fig.   valve sequence (FIG. 8) during the introduction of the metal; 114 in FIG.  12 - valve position after insertion. metal; in FIG. 3, node 1 in FIG.  eight; in fig.  14 - the third variant of the device, a longitudinal section; in fig.  15 is a sectional view BB in FIG.  14; FIG. 16 shows the node P in FIG.  14; in fig.  17 is a section of YYY in FIG.  sixteen; in fig.  18 - fourth variant of the device, longitudinal section; in fig. 19 shows a d-d in FIG. 18; in fig.  20 section EE of FIG. 18; in fig.  2 fifth version of the device, a longitudinal section; FIG. 22 is a section of FIG.  21; in fig.  23-28 are embodiments of the device corresponding to FIG.  sixteen; Fig. 29 shows a ventilation device, longitudinal section; in Fig, 30 - section 3-3 in Fig, 29.  The ventilation device is mounted in a mold for casting, which, in turn, is mounted on a fixed and movable 2 plates.  The form consists of a fixed half 3 and a mobile half 4.  The form is equipped with a pushing plate 5 and a pushing pin 6.  In the form of a cavity 7 and a sprue 8.  A thin groove, having a sufficient cross section, is made in a movable Levine of form 4 along the periphery of the cavity 7.  This thin groove and flat part of the fixed half 3 facing the groove limit the ventilation channel 9 in the form. The additional ventilation channel 10 in the form is connected to the upper end of the ventilation channel 9 and extends up or back.  The additional vent 10 is located on the separating surfaces of the two halves of the molds 3 and 4, t. e.  it has a cross section along a line parallel to the axis of the shape, the configuration of this cross section is determined by the two halves of shape 3 and. four.  Next, behind the vent 10, there is a chamber II of the valve 12, which can be split into two parts, the seat. 13 valves and a gas outlet 14.  Sliding valve 2, having the ability to slide in a vertical direction, is located in chamber 11.  The valve 12 is disc-shaped and the edge of the upper end of the valve 12 is tapered.  Two symmetrical bypass ducts 15, located around valve 12, are inwardly flared off from the S10 Horo vent of the canp 10 and adjacent to the seat 13 of valve 12, the angle of intersection and b formed by the vent 10 and the inlet of each non-replenishing duct 15, is acute or right angle.  So Once, the angle 0 between the ventilation duct 10 and each of the ducts 15 at the branch point does not exceed 90.  The air vent portion 16 of the ventilation duct 10, which faces the chamber 11 of the ram 12, is narrowed down like a nozzle.  The coil spring 17 is located in the gas outlet channel 14.  The hydraulic cylinder 18 for driving the rod 19, connected to the spring I7, is mounted on top of the fixed half 3 of the form.  The valve 12 is pressed against the lower or front end of the chamber 11 by means of a spring 17.  The channel 14 is connected to the opening by a channel 20, which enters the outer side of the mold.  The valve 12 may be made of the same material as the melt to be poured 21.  In the second embodiment of the device of FIG. 7-13, the valve pressing device is made in the form of a cylindrical body 22 placed in the hole 23, made in the form.  The housing 22 has a bell-shaped tip 24, a jumper 25 and a rear cylindrical chamber 26.  The valve 12 has a shank 27, which is passed through the jumper 25, and the valve seat 13 is made at the end of the tip 24.  In the side wall of the bell-shaped tip there are holes 28 for the discharge of gases.  In the form of a vtolien ring groove 29, connecting the hole 23 with the hole 20.  The device variants in FIG.  14-17 provide for the location of the axis of the valve parallel to the axis of the form.  In the third embodiment, a form is presented comprising a 3D press bushing placed in a press chamber 3 having a filling opening 32.  The ventilating channel 10 is connected to the cavity 7 and to the chamber 1 of the valve 1 2 and is provided on the separating surfaces of the two halves 3 and 4.  The shape of the chamber 11 has an axial line intersecting with the vent 10 at a right angle, and the lower part of the chamber 11 has a conical chamfer d.  Valve 12 has a sliding fit in chamber P.  The valve stem 33 33 is located on the side of the fixed half of the mold 3 and passes through the opening 34 of the mold, which is connected to the valve chamber 1 through the seat 13.  The rod 33 slides through the guide block 35, which is secured in the bore 34, and comes out.  On the outer side of the guide block 35, at the end of the valve stem 33, a stopper 36 is attached. The cylindrical casing 37 is attached to the stationary half of the mold and there is a coil spring 17 in it.  A hole 38 is formed in the housing 37. A through hole 34 is connected to a gas outlet 20.  FIG.  18-20, a quarter of a variant of the device is shown in which the bypass channels 15 are located perpendicular to the axis of the mold and an inclined channel 39 is made, directed into the chamber 11 and deep inside the movable half-form.  An inclined surface 40 is made in the chamber. In the fifth embodiment of the device (FIGS. 21 and 22), the valve 12 has a cylindrical shape and is fastened beyond the outer surface of the fixed half of the form.  The housing 37 is mounted on a half of the mold and a spring 17 is compressed in it. A through hole is made in the valve. 41, which coincides with the holes in the chamber 11 of the bypass channels 15 before introducing the metal into the mold. To prevent the valve 12 from rotating, there is a key 42 on its side, located in the guide groove, the variant shown in FIG. 23 is characterized in that a groove 43 is formed circumferentially on the side surface of the valve 12, which is connected to the through hole 41. In the position shown in FIG. 23, the valve 12 is tightly adjacent to the form, and the open ends of the bypass channels 15 through the groove 43 are connected to the valve chamber 11.  Since the position of the valve 12 can only be determined by the flange part 44, then c. This embodiment does not have a problem, even if the valve 12 is turned, and there is no need to provide for an anti-rotation key.  In the embodiment shown in FIG.  24, the bypass ducts 15 are located along the side surface of the movable half of the mold 4, while the duct 39, from, 7 extending from the ventilation duct 10, is inclined towards it.  In the embodiment of FIG.  25, on the side surface of the valve 12, a wide groove 43 is formed so that it is connected to the gas outlet 20.  The bypass channels 15 are connected to the hole 20 through the groove 43, when the valve is pressed against the hole 3 of the trunk 12, when the groove 43 is not connected to them, t. e, when the valve is pressed against the housing 37.  In the embodiment shown in FIG.  26, where instead of the spring the compressed air back pressure is used, the action of the hydraulic cylinder can also be used.  The tenth option provides for the implementation of the conical protrusion 45 on the front end of the valve 12.  In a one-digit version, the valve has an inclined end surface 46 directed toward the vent. channel 10, the valve block of the ventilation device can be installed both on the fixed half of the mold 3 and on the movable half of the mold 4, FIG.  29 and 30, a detail of the ventilation device is shown.  This vent device is essentially the structure shown in FIG.  13.  The ventilation device differs from that shown in FIG. 13 mainly by the design of the pressing device and the fact that the housing 22 consists of several parts.  The coil spring 17 is located between the rear end of the valve stem 27 and the rear cylindrical chamber 26.  The valve has a notch 4. 7, which falls. the molten metal when it hits the valve 12.  The hydraulic cylinder 18 is fixed on the fixed half of the 3 mold with the help of the bracket 48, provided with a guide 49, so that the housing 22 slides under the guide 49.  Sensors 50 and 51, such as limit switches or proximity switches, are mounted on the side wall of the bracket 48.  The housing is provided with a rod 52 for actuating the sensors, whereby an upper and a lower limit of movement of the housing 22 is set.  Another rod 53 protrudes from the shank 27 of the valve on the outside of the housing 2. 2 and actuates the sensor 54.  When the rod 53 does not find 31 seconds in contact with the sensor 54, the valve 12 is separated from the seat 13 and the bypass channel 15 is connected to the channel 20 for the release of gas through the valve chamber 11.  Accordingly, the signal from sensor 54 confirms whether the valve is pressed against the valve seat or not.  When it shows that the valve is separated and: the saddles, the mold and the ventilation device included in it are ready for pouring or melt injection operations.  The device works as follows. When closing the form (FIG.  1 and 2) the valve 12 is pressed by the action of the cylinder 18 and the coil spring 17 to the front end of the valve chamber 11 and each of the bypass channels 15 is connected to the top or rear of the camera 11.  In this position, the channel 14 is connected to the bypass channels.  When molten metal flows into cavity 7 from sprue 8, gases pass through vent 9, additional vent 10, overflow channels 15, the upper part of valve chamber 11 and gas outlet 14 and out through outlet 20.  When metal 2 enters cavity 7, (fig. 3) the valve 12 remains pressed against the lower part of the chamber 11, and a large amount of gases passes through the channels 15 (indicated by arrows in FIG.  3).  When the introduction. the melt 21 into the cavity 7 is completed, part of the melt 21 rises along the ventilation passage 10 and hits the lower or front surface of the valve 12, causing the valve to compress the coil: a single spring 17, and the other part of the melt begins to enter the bypass channels 15 (Fig . 4) Valve I2 closes the bypass channels 15 when the melt rises and the melt flow 21 stops.  At this point, the gases that pass through the channels 15 are removed and only a small amount of gases remain in the vicinity of the seat 13 of the valve 12.  These remaining gases do not adversely affect casting (Fig.  five).  When the casting or melt injection operation is completed, the cylinder 18 for lifting the coil 91 of the spring 17, which presses the valve 12 to the mold, and then performs with the mold opening operation (FIG. 6) The casting is removed from the mold by the pushing pin 6 and at the same time, solidified metal is removed from the vent KaHaj 10, the lower or front part of the chamber 11, channels 15 together with the valve 12.  The invention uses the difference in the specific gravity of gases and molten metal (for example, the ratio of the specific gravity of air to molten aluminum is about 1 / 20,000), as well as the difference in inertia due to the difference in these weights.  In order to prevent the molten metal rising in the vent 10 from penetrating directly into the bypass channels, and also to prevent the melt 21 from entering between the valve 12 and the valve seat 13 before the valve moves back, the angle S formed by the ventilation duct 10 and the entrance of each of the channels 15, is set equal to the acute or right angle.  Preferably, angle 9 is an acute angle.  At the beginning of each operation, the valve 12 is replaced in the split half of the valve chamber in the fixed half of the 3rd form, and after the valve: is pressed down to the lower part of the valve chamber 1, the mold is assembled.  If valve 12 is made of a material that is different from the molten metal, then after removing the casting, the valve is separated from it and from the part of the hardened metal that is near it, after which. it can be reused.  If valve 12 is made of the same material as the molten metal, then valve 12 used is either ejected or can be remelted together with the part of the hardened metal found in the casting, for example, with sprues, burrs or scrap, to obtain a suitable for pouring molten metal.  In the second embodiment, the piston rod 19 is raised up using a small force generated by the spiral spring 17, and the mold is assembled in a position where the valve 10 12 is slightly raised from the front of the valve chamber 11.  Then the piston rod 19 is retracted downward so that the valve is pressed against the front of the valve chamber by means of a coil spring 17.  In this position, the injection operation is started and carried out under pressure while the gas exits the inside of the mold in the same manner as described above.  When the pressure casting operation is completed, the rod 19 raises the valve 2, after which the mold opens.  In this embodiment, it is not necessary to replace the valve 12 in each filling operation.  If the gases are forcedly removed from the gas outlet 20, the venting operation can be performed more efficiently.  In the case when the suction of gases from the hole 20TOR the release of gases is performed simultaneously with the operation of introducing metal, for example, the injection of the vacuum device into the machine can be assumed to be cast under pressure.  In the third embodiment of the device (FIG.  14-17) the mold is collected and then the molten metal is poured into the pressing chamber 32.  When the press piston 31 moves forward, the molten metal from chamber 32 at high speed flows into cavity 7 through gate 8 and at the same time a small mass of gases from the cavity is directed to valve chamber 11 through the vent 9 surrounding the cavity 7 and then through additional vent 10.  Since the valve chamber 11 is closed by the valve 12, the gases flow around the valve through the bypass channels 15 and enter the atmosphere through the channel 13 for gas injection.  The molten metal then penetrates the ventilation ducts 9 and 10.  Since the molten metal has a large mass and penetrates at high speed, it does not initially flow through the bypass channels 15, but is directed directly into the valve chamber 11.  Since the surface of the valve chamber has a cone configuration, the molten metal hits the surface and is reflected from it.  Thus, the direction of movement changes by approximately 90 (indicated by the arrow in FIG.  14 and 16 / and the impact force is applied to the end surface 11 of the valve 12.  Accordingly, the valve moves at high speed to the right against the action of the elastic force on the side of the spiral spring 17 and then presses against the valve seat 13. on the base opening 34 at the base, whereby the openings at each overflow channel 15 into the valve chamber 1 1 are blocked by the side surface of the valve and the communication of the channels 15 with the through hole 34 and the gas release hole 20 closes.  Accordingly, the channel 13 for the release of gas is blocked due to the action of the molten metal itself and the exit of the molten metal to the outer surface of the mold is completely excluded.  In the fourth embodiment (FIG.  18-20 / during the metal introduction operation, after gases having a small mass, first exit through the bypass channels 15, then through the through hole 34 and the gas outlet 20, a melt having a large mass is introduced into the valve chamber 11 through the channel-passage 39, as described when considering the third option; the melt hits the inclined conical surface 40 of the valve chamber 11, the direction of flow of the melt changes and the valve 12 is pressed against the valve seat 3.  Accordingly, the outlet channel 14, which extends to the outer surface of the mold, automatically overlaps with the melt itself and prevents the melt from penetrating the outer surface of the mold.  After the injection, the melt cools and crystallizes, the mold opens and the metal hardened in the ventilation ducts 9, and 10, in the front end part of the valve chamber 1I and in the ducts 15, separates from the fixed half of the 3 mold, pressing against the movable half of the 4 mold.  Then, the pushing plate 5 is fed forward and the hardened metal is separated from the movable half of the mold together with the product, which has taken the shape of the cavity 7.  After the mold is opened and the metal hardened in the valve chamber 11 is removed, the valve 12 returns under the action of the elastic force of the coil spring 17 and is ready for the metal insertion operation of the next cycle, In the fifth version (gig.  21 and 22) at the time the metal is introduced into the mold, the gases in the cavity 7 are directed through 1112 vent channel 10, pass through perpendicular channels 15 and are directed to the inside of valve 12 from valve through hole 41 and then are thrown out of the hole 38 housing 37.  Since the molten metal or melt, which enters for gases, has a large mass, it also has a large moment of inertia and enters with great kinetic energy directly into the front end of the valve chamber 11.  Since the lower part of the valve chamber has an inclined surface 40 (FIG.  21 /, the melt strikes this surface and thereby causes a change in its flow direction of about 90 °, resulting in a melt with a force striking the end of valve 12, causing the spring 17 to compress and move valve 2 to the right.  Accordingly, the through hole 41 does not connect the open ends of the channels 15 to the valve chamber.  The open ends of the channels 15 are blocked by the outer wall of the valve 12.  Thus, the channel connecting with.  the outer side of the mold, blocked by the action of the melt itself, is thereby prevented from entering the melt to the outside.  The operation of the device according to the variants shown in FIGS. 23 and 24 is similar to the fifth embodiment (FIG.  21 and 22 /.  In the eighth variant (FIG.  25) during melt injection, gases exit the bypass channels 15 to the outside of the mold through the cylindrical groove 43 and the gas outlet 20.  Hole 38, made in the housing 37, does not serve for the release of gas.  The molten metal, having a large mass, hits the inclined surface 40 of the valve chamber I1, and the flow direction of the molten metal changes by about 90 relative to the axial direction of the ventilation duct 10 and moves the valve 12 to the right.  The open ends of the channels 15 extend out of the connection with the groove 43 and thus overlap the side surface of the valve 12, as a result of which the channel is outwardly blocked.  The exit of the metal to the outside of the mold is accordingly prevented. In the ninth embodiment (Fig.  26) The valve 1-2 is not pressed by the spring 17, as in the above described embodiments.  The back pressure is applied to the valve 131 12 from the side of the compressed air source and the valve 12 is subjected to this back pressure to touch the gas pressure and press to the mold.  This option can be modified in such a way as to perceive the pressure from the hydraulic cylinder instead of the pressure of compressed air.  Moreover, the release of gases and the overlapping of the hopper can be performed without any counter-pressure applied to the valve 12.  The reason for this is as follows.  Although the waste gases can flow out freely when the melt having a greater mass enters the valve chamber 11, the valve 12 immediately moves to the right (Fig.  26) to block the open ends of the channels 15 and to prevent the melt from leaving the outside of the mold.  While the mold is opened, the metal hardened in the valve chamber 11 moves the valve 12 pushed backward and sets the valve back into its initial movable position.  In the twelfth embodiment (FIG.  23) the conical protrusion 45 is made at the front end of the bottom of the cylindrical valve 12, while the bottom wall of the valves 12 shown in FIG.  12.14, L 7,19,20,21 and 22, has a flat surface perpendicular to the axis of the form, and valve chamber 11 is made in A.  A cylinder with a flat bottom surface.  In the embodiment of FIG.  27, ventilation may be performed in the same manner as in other embodiments.  When the molten metal, which has a large moment of inertia, enters the valve chamber 11, it hits the lateral surface of the conical protrusion 45 of the clutch pan, and under the action of this impact, the valve 12 compresses the helical spring 17 and moves to the right.  As a result, the open ends of the channels 15 overlap with the side surface of the valve and prevent the molten metal from escaping to the outer surface of the mold.  In the eleventh embodiment (FIG.  28) under the action of the melt, with a force striking the inclined surface 11, the valve moves to the right, compressing the spring 17 to block the open ends of the channels 15.  Therefore, the exit of the melt to the outside of the mold can be prevented.  The invention makes it possible to improve the quality of the castings by improving the ventilation of the mold and preventing the molten metal from entering the ventilation devices, increasing the service life of the mold due to the absence of overflow in the ventilation section.
    13
    12
    6
    Vb
    I
    Fig 8
    18
    BB
    but
    FIG 15
    1 FIG. 16
    YY FIG. 17 D-D JJ ha, z5
    15
    liZ 12 J
    10 1515 FIG. 25 .j FIG FIG. 2 8
    -3
    FIG 29
    n
    48
    -18
    n
    fi & .ZO
    权利要求:
    Claims (19)
    [1]
    1. VENTILATION DEVICE FOR A CASTING FORM, consisting of a movable and fixed half-mold, containing a ventilation duct made through a mold connector and connected to the atmosphere or with a suction system, a valve mounted movably in the axial direction, · a housing with a valve seat, a clamping device valve and actuator for moving it, characterized in that, in order to simplify the design and improve the quality of castings, it is equipped with at least one bypass channel branching from the ventilation channel and adjacent valve seat, wherein the bypass channel is positioned at 'plane shape connector.
    A
    [2]
    2. The device according to π. 1, with the fact that the bypass channels are located symmetrically, and the angle between the axes of the ventilation channel and each bypass channel is not more than 90 °.
    [3]
    3. The device according to π. 1, characterized in that the vgo valve displacement actuator is made in the form of a hydraulic cylinder mounted on a fixed half-mold, the valve clamping device being made in the form of a spiral spring located between the valve and the piston of the hydraulic cylinder; the valve is made in the form of a disk and is equipped with a shank, and the prepress device is made in the form of a cylindrical body with a bell-shaped tip, a jumper and a rear cylindrical chamber, the valve shank being passed through the jumper, and a valve seat is made at the end of the bell-shaped tip.
    [4]
    4. The device pop. 3, characterized in that in the side wall of the bell-shaped tip made at least one hole for the discharge of gases.
    [5]
    5. The device pop, 4, characterized in that the shape is made of an annular groove connecting the hole in the side wall kotsokoloobraznogo tip with a channel for the release of gases.
    [6]
    6. The device according to p. 3, characterized in that the coil spring is placed in a bell-shaped tip between the valve and the jumper.
    [7]
    7. Device pop 3, characterized in that the spiral spring is disposed between the valve shaft and the rear cylindrical Ka h measure.
    [8]
    8. The device according to π. 1, wherein the valve is made in the form of a hollow cylinder with a front closed end and a radial, annular protrusion at the open end, installed in the hole of the fixed half-mold with the possibility of interaction with the half-mold, radial annular protrusion, the valve body is fixed on fixed half-mold, made with a gas outlet and its inner surface serves as a valve seat, moreover, the valve clamping device is made in the form of a spiral spring placed between the front closed end of the valve and by the mouth
    [9]
    9. The device pop. 8, characterized in that a hole is made in the side wall of the valve connecting the bypass channel to the internal cavity of the valve.
    [10]
    10. The device according to p, 8, characterized in that on the outer surface of the valve an annular groove is made connecting the bypass channel through the side openings with the internal cavity of the valve.
    [11]
    11. The device according to claim 8, characterized in that an annular groove is made on the outer surface of the valve connecting the bypass channel with the Form gas channel.
    [12]
    12. The device according to π. 1, characterized in that the internal cavity of the valve is connected through a pressure reducing valve to a pressure source.
    [13]
    13. The device according to paragraphs. 1, 2 and 3, characterized in that the axis of the valve is perpendicular to the axis of the Form.
    [14]
    14. The device according to paragraphs. 1,2,8,9,10, 11 and 12, characterized in that the axis of the valve is placed parallel to the axis of the mold.
    [15]
    15. The device according to p. 14, characterized in that the front end of the valve is made parallel to the mold connector, and the surface of the mold half facing the valve is made inclined to the end of the valve.
    [16]
    16. The device according to p. 15, characterized in that the bypass channels are located in a plane perpendicular to the axis of the shape, and 11 the ventilation channel is inclined to this plane.
    [17]
    17. The device according to p. 15, characterized in that the ventilation duct is located in a plane perpendicular to the axis of the form, and each of the bypass ducts is inclined to this plane.
    [18]
    18. The device according to p. 14, characterized in that the end surface of the valve is conical, and part of the surface of the mold half facing the valve is made perpendicular to the axis of the mold, while the ventilation duct is parallel to this surface of the Mold ', and the bypass duct is oblique to her.
    [19]
    19. The device according to p. 3, characterized in that the disk-shaped valve is made of the same material as the casting.
    Prior AND t e you by n y n- to t and m:09/27/79 by p. 1-6, 8-1 1, 13 and 19; 03/06/80 by p. 1-2, 8-12, 14 and 18; 03/07/80 by pp 1-1 1 , 13 and 19.
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    同族专利:
    公开号 | 公开日
    BR8006217A|1981-04-07|
    CH654768A5|1986-03-14|
    FR2466292B1|1983-12-30|
    FR2466292A1|1981-04-10|
    ES495400A0|1981-12-01|
    IT1133630B|1986-07-09|
    DE3036233A1|1981-04-02|
    US4431047A|1984-02-14|
    CA1151377A|1983-08-09|
    ES8201052A1|1981-12-01|
    DE3036233C2|1984-05-24|
    IT8024900D0|1980-09-25|
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    US8899302B2|2012-03-22|2014-12-02|Mahase Bhola|Mold valve|
    KR101541408B1|2014-04-08|2015-08-03|주식회사 에이스테크놀로지|Method for RF device using cavity structure manufacturing mold and Mold produced by the same|
    CN108247007B|2018-01-24|2020-07-03|重庆百吉四兴压铸有限公司|Sprocket chamber cover machining process|
    KR20200025094A|2018-08-29|2020-03-10|삼성전자주식회사|Semiconductor package molding device|
    CN111570761B|2020-06-22|2021-10-26|湛江德利车辆部件有限公司|Die-casting die core-pulling mechanism|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP54123167A|JPS59309B2|1979-09-27|1979-09-27|
    JP55027362A|JPS5923698B2|1980-03-06|1980-03-06|
    JP55027891A|JPS5846387B2|1980-03-07|1980-03-07|
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