JP2005205437A - Casting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the installation occupancy space of a casting machine provided with slide cores to the necessary minimum by miniaturizing the casting machine. <P>SOLUTION: Mutually confronted first and second slide cores 16 and 17 are freely movably provided on a base 12. An opening/closing device 22 for opening/closing the slide cores by one cylinder (third air cylinder 25) is provided. The cylinder body 25b in the third air cylinder 25 is provided at the outside of the first slide core 16 in the base 12 in such a manner that its axis direction is made parallel to the opening/closing direction of the first slide core 16. The cylinder body 25b is supported to the base 12 freely movably along the opening/closing direction. The cylinder body 25b is connected with the second slide core 17 so as to be interlocked via the first and second connection members 26 and 28 and a die bar 27. The piston rod 25b in the third air cylinder 25 is connected with the first slide core 16. Stoppers 29 controlling the movement of the first slide core 16 to the opening direction at the full-opening position are provided on the base 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a casting machine having a slide core.

  Conventionally, for example, a cylinder head of a motorcycle engine is cast by a low pressure casting method. As a casting machine for low pressure casting, for example, there is one disclosed in Patent Document 1. In the casting machine shown in Patent Document 1, a crucible is provided below a mold composed of a lower mold and an upper mold, and the molten metal stored in the crucible is pressurized to pass through a stalk and a gate cup. The structure which pushes up and supplies to the gate of the said lower mold is taken.

In a conventional casting machine of this type, a slide core is used as shown in FIG. 6 when casting a casting having a complicated shape that cannot be molded only with an upper mold and a lower mold.
FIG. 6 is a plan view showing the configuration of a conventional casting machine having four slide cores. In FIG. 6, reference numeral 1 denotes a mold support base, 2 denotes a lower mold, 3 denotes a slide core, 4 is an air cylinder for driving the slide core 3, and 5 is a guide post for regulating the moving direction of the slide core.

The lower mold 2 is formed in a quadrangular shape in a plan view and is fixed on the base 1 via a support member (not shown). The slide core 3 is disposed so as to surround the lower mold 2 from four directions, and can reciprocate between a mold clamping position shown in FIG. 6A and a mold opening shown in FIG. It is supported by the base 1. These slide cores 3 are connected to a piston rod 4a of an air cylinder 4 on the outer end face.
The air cylinder 4 is provided for each slide core 3 and is fixed to the base 1 in a state where movement of the cylinder body 4b is restricted.
In addition, the applicant could not find any prior art documents closely related to the present invention by the time of filing other than the prior art documents specified by the prior art document information described in the present specification. .
Japanese Patent Laid-Open No. 11-57979

However, as described above, the casting machine provided with the slide core 3 is large in size because the air cylinder 4 for driving the slide core is arranged on each side of the mold portion, and a large installation occupation space. There was a problem that would be necessary. In particular, if a plurality of sets of dies are arranged on one base, the air cylinders must be arranged between the dies, and the casting machine becomes larger.
The present invention has been made to solve such problems, and an object of the present invention is to reduce the installation space of the casting machine to the minimum necessary by downsizing the casting machine having the slide core.

  In order to achieve this object, a casting machine according to the present invention is a casting machine in which first and second slide cores facing each other are movably provided on a base, and these slide cores are opened and closed by a single cylinder. The cylinder body of the cylinder is movable outside the first slide core on the base along the opening / closing direction so that the axial direction thereof is parallel to the opening / closing direction of the first slide core. The second slide core is coupled to the cylinder body via a coupling member, and the first slide core is connected to the piston rod of the cylinder. A stopper for restricting movement in the opening direction at the fully open position is provided on the base.

  A casting machine according to a second aspect of the present invention is the casting machine according to the first aspect of the present invention, wherein a plurality of molds having first and second slide cores and cylinders are provided on one base. These molds are arranged on one base so that the second slide cores are adjacent to each other.

  A casting machine according to a third aspect of the present invention is the casting machine according to the second aspect of the present invention, wherein two molds each having a first and a second slide core are used, and these molds are Third and fourth slide cores facing each other are provided, and the third slide cores located on one side of the mold among these third and fourth slide cores are connected to each other. At the same time, the fourth slide cores located on the other side of the mold are connected to each other so as to interlock with each other, and the cylinder for driving the third slide cores and the fourth slide cores are driven. And a cylinder.

According to a fourth aspect of the present invention, there is provided a casting machine according to the second or third aspect of the present invention, wherein the upper mold of a plurality of sets of molds located on the base is a single upper mold. It is configured to be lifted and lowered by a mold driving device.
According to a fifth aspect of the present invention, there is provided a casting machine according to any one of the second to fourth aspects, wherein one of a plurality of molds located on a base is provided. The molten metal is supplied from the molten metal supply device.

According to the present invention, when the cylinder extends, the first slide core and the second slide core move in the direction in which the mold is clamped, and when the cylinder contracts, the both slide cores move in the direction in which the mold is opened. Moving. Therefore, since the first and second slide cores can be driven by one cylinder located outside the first slide core, an occupied space for cylinder arrangement is not required outside the second slide core. Thus, a compact casting machine can be provided. In addition, since two slide cores are driven by one cylinder, the number of cylinders used can be reduced.

  According to the second aspect of the present invention, since the plurality of sets of dies are arranged in a state where the second slide cores that do not require the cylinder arrangement space are adjacent to each other, the dies can be brought close to each other, and the installation is narrow. Multiple sets of molds can be arranged in the occupied space. Therefore, the casting machine can be miniaturized and the installation exclusive space can be reduced to the minimum necessary.

  According to the third aspect of the present invention, since each of the third slide core and the fourth slide core can be driven by two cylinders, each of these slide cores is driven by a cylinder. In comparison with this, the number of cylinders used can be reduced, and the space occupied by the casting machine can be reduced.

According to the fourth aspect of the present invention, the number of upper mold drive devices used can be reduced as compared with the case where the upper mold drive devices are provided in a plurality of sets of molds, and the casting machine is installed. Since the occupied space can be narrowed, a compact casting machine can be formed even though a plurality of molds are provided.
According to the invention described in claim 5, the number of the molten metal supply devices can be reduced as compared with the case where the molten metal supply devices are respectively provided in a plurality of sets of molds, and the installation occupation space of the casting machine can be narrowed. Therefore, a compact casting machine can be formed despite a plurality of sets of molds.

Hereinafter, an embodiment of a casting machine according to the present invention will be described in detail with reference to FIGS.
1 and 2 are plan views showing the configuration of a lower mold and a slide core of a casting machine according to the present invention. FIG. 1 shows a clamped state and FIG. 2 shows a mold open state. 3 and 4 are diagrams showing a specific example of the casting machine according to the present invention. FIG. 3 is a plan view showing a lower mold and a slide core in a clamped state. FIG. 4 is a lower mold in an opened state. It is a top view which shows a slide core. FIG. 5 is a longitudinal sectional view showing a specific example of the casting machine according to the present invention, which is a sectional view taken along the line V-V in FIG.

Here, first, the configuration of the casting machine according to the present invention will be described in detail with reference to FIGS. 1 and 2.
1 and 2, what is indicated by reference numeral 11 is a casting machine according to the present invention. In the casting machine 11, two sets of molds 13 and 14 are provided on one base 12. Each of the molds 13 and 14 includes a lower mold 15 having a rectangular shape in plan view fixed to the base 12, and four slide cores 16 to 19 disposed so as to surround the lower mold 15 from four directions. The upper mold is not shown. These molds 13 and 14 are such that when the slide cores 16 to 19 are clamped on the four sides of the lower mold 15 (see FIG. 1), the upper mold is molded on these mold members. By being tightened, the cavity 20 is formed in a closed space inside. Since these two molds 13 and 14 are only formed so as to be symmetrical in the left-right direction in FIGS. 1 and 2, in this embodiment, only the mold 13 located on the left side in FIG. The mold 14 located on the right side of the figure will be described with the same reference numeral as the left mold 13 and will not be described in detail.

  The lower mold 15 is formed so that a gate (not shown) penetrates in the vertical direction, and a molten metal is supplied from a crucible (not shown) disposed below the base 12. The base 12 has portions corresponding to the four corners of the lower mold 15 for restricting the direction of movement of first to fourth slide cores 16 to 19 described later and positioning the upper mold at the time of mold clamping. Corner posts 21 are erected.

The four slide cores 16 to 19 are movably fitted between the four corner posts 21, 21,..., And the mold clamping position shown in FIG. Are movably supported by the base 12 so that they can reciprocate between each other. Further, as shown in FIG. 1, these first to fourth slide cores 16 to 19 are formed so as to be in close contact with adjacent slide cores in a clamped state.
Among these four slide cores 16 to 19, the first slide core 16 and the second slide core 17 that face each other in the left-right direction in FIGS. 1 and 2 are connected to an opening / closing device 22 described later, The other third slide core 18 and the fourth slide core 19 are piston rods 23a of the first and second air cylinders 23, 24 disposed outside these slide cores (front side in the mold opening direction). , 24a.

  The first and second air cylinders 23 and 24 have an axial direction parallel to the opening / closing direction (vertical direction in FIGS. 1 and 2) of the third and fourth slide cores 18 and 19, and the piston rod 23a. , 24a are attached to the base 12 in a state of projecting from the cylinder bodies 23b, 24b toward the third and fourth slide cores 18, 19. That is, when the first and second air cylinders 23 and 24 extend, the third and fourth slide cores 18 and 19 are clamped (see FIG. 1), and both the air cylinders 23 and 24 contract. Thus, the slide cores 18 and 19 are opened (see FIG. 2).

  The opening / closing device 22 connects the first slide core 16 and the second slide core 17 by one third air cylinder 25 located outside the first slide core 16 (front side in the mold opening direction). The structure to drive is taken. More specifically, the third air cylinder 25 has an axial direction parallel to the opening and closing directions (left and right directions in FIGS. 1 and 2) of the first and second slide cores 16 and 17, and the piston rod 25a is It is arranged on the base 12 so as to protrude from the cylinder body 25b to the first slide core 16 side. The piston rod 25a of the third air cylinder 25 is connected to the first slide core 16 at the projecting side end, and the cylinder body 25b is mounted on the base 12 by a rail (not shown). The slide cores 16 and 17 are supported so as to be movable in the opening and closing direction.

The cylinder body 25b of the third air cylinder 25 includes a first connecting member 26 extending in the vertical direction in FIGS. 1 and 2, and second end portions of the first connecting member 26 toward the second slide core 17. 1. Through two tie bars 27, 27 extending in parallel with the opening / closing direction of the second slide cores 16, 17, and a second connecting member 28 for connecting the extended side ends of these tie bars 27 to each other. A second slide core 17 is connected.
The tie bar 27 is made of a rod having a circular cross section, and both end portions penetrate the guide post 21 and are supported by the guide post 21 so as to be movable only in the axial direction. The tie bar 27 according to this embodiment crosses above the range in which the third and fourth slide cores 19 move so as not to block the movement of the third and fourth slide cores 18 and 19. It is arranged.

  In the vicinity of the guide post 21 that supports the end of the tie bar 27 on the first connecting member 26 side, a stopper 29 for restricting the movement of the first slide core 16 in the opening direction at the fully open position is arranged. It is installed. The stopper 29 has a structure that restricts movement of the stopper 29 when the outer end surface of the first slide core 16 comes into contact therewith, and is fixed to the base 12 so as to protrude upward from the base 12. The stopper 29 according to this embodiment is also opposed to the inner end surface of the first connecting member 26, and the first connecting member 26 is fully opened in the mold opening direction (rightward in FIGS. 1 and 2). It is configured to regulate by position.

  1 and 2, the mold 13 located on the left side and the mold 14 located on the right side are attached to the base 12 with the second slide core 17 adjacent to each other. The distance between the two molds 13 and 14 is such that the second connecting members 28 of the two molds 13 and 14 are in a state where the movement amount of the second connecting member 28 is maximized when the mold is opened as shown in FIG. The length is set so as not to interfere with each other.

  In the casting machine 11 configured as described above, the first to fourth slide cores 16 to 19 are opened by contracting the first to third air cylinders 23 to 25 from the mold clamping state shown in FIG. On the contrary, by extending the first to third air cylinders 23 to 25, the first to fourth slide cores 16 to 19 are clamped. More specifically, when the first air cylinder 23 contracts, the third slide core 18 moves upward in FIG. 1 and opens, and when the second air cylinder 24 contracts, the fourth slide core 19 is contracted. Moves downward in FIG. 1 and opens. The third and fourth slide cores 18 and 19 are closed by extending the first and second air cylinders 23 and 24.

  On the other hand, when the third air cylinder 25 contracts, the first slide core 16 moves to the left in FIG. 1 together with the piston rod 25a, and finally comes into contact with the stopper 29 to reach the fully open position. The cylinder body 25b of the third air cylinder 25 moves to the right in FIG. At this time, the second slide core 17 connected to the cylinder body 25b via the first and second connecting members 26, 28 and the tie bar 27 also moves in the same direction as the cylinder body 25b.

When the contraction of the third air cylinder 25 progresses and the second slide core 17 reaches the fully open position, the first connecting member 26 comes into contact with the stopper 29 as shown in FIG. The core 17 is stopped when the movement in the opening direction is further restricted.
The first and second slide cores 16 and 17 are closed by extending the third air cylinder 25. That is, when the piston rod 25a of the third air cylinder 25 moves forward from the state shown in FIG. 2, the first slide core 16 moves toward the lower mold 15 and eventually comes into contact with the lower mold 15 to When stopped at the position, the cylinder body 25b of the third air cylinder 25 subsequently moves in a direction away from the lower mold 15 so that the second slide core is located on the opposite side with the lower mold 15 interposed therebetween. 17 moves toward the lower mold 15. Thereafter, the second slide core 17 is brought into contact with the lower mold 15, and further movement in the closing direction is restricted, so that the second slide core 17 stops at that position (mold clamping position).

The casting machine 11 configured as described above is actually formed as shown in FIGS. 3 to 5, members identical or equivalent to those described with reference to FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.
3 to 5, the two molds 13 and 14 include a third connecting member 31 and a fourth connecting member, and the third slide cores 18 and 18 and the fourth sliding cores 19 and 19 are respectively connected to the third connecting member 31 and the fourth connecting member. The members 32 are connected to each other. The third connecting member 31 is connected to the piston rod 23 a of the first air cylinder 23, and the fourth connecting member 32 is connected to the piston rod 24 a of the second air cylinder 24.

  That is, in this embodiment, two third slide cores 18 and 18 are driven by one air cylinder (first air cylinder 23), and one air cylinder (second air cylinder 24). Thus, the two fourth slide cores 19 are driven. In this way, the two third slide cores 18 and 18 are driven by one first air cylinder 23, and the two fourth slide cores 19 and 19 are driven by one second air cylinder 24. The casting machine 11 constitutes the casting machine according to claim 3. By adopting this configuration, the number of cylinders used can be reduced as compared with the case where a total of four third and fourth slide cores 18 and 19 are each driven by an air cylinder, and the casting machine 11 is installed. Occupied space can be narrowed.

  As described above, the two third slide cores 18 and 18 move integrally, and the two fourth slide cores 19 and 19 move integrally. Therefore, in this embodiment, the guide post 21 is used. Are provided only at the four corners of the mold forming portion. Further, since the four guide posts 21 are provided, only the end portion on the first slide core 16 side of the tie bar 27 of the opening / closing device 22 is supported movably on the guide post 21. In the left mold 13, one tie bar 27 according to this embodiment is arranged below the third slide core 18, and the other is arranged above the fourth slide core 19. One of the two tie bars 27 of the right mold 14 is disposed above the third slide core 18, and the other is disposed below the fourth slide core 19. By adopting this configuration, both the tie bars 27 of the mold 14 positioned on the right side in FIG. 3 and 4 and the ends of the both tie bars 27 of the mold 13 positioned on the left side in FIGS. The second connecting members 28 of the molds 13 and 14 can be brought close to each other while preventing the end of the second connecting member 28 from interfering with each other.

  Further, the third air cylinder 25 according to this embodiment is fixed to a support member 34 supported on the base 12 through a rail 33 so as to be movable. 3 and 4, reference numeral 35 provided in the vicinity of the first to fourth slide cores 16 to 19 is a guide for supporting these slide cores on the base 12 so as to be movable in parallel. It is a rail.

As shown in FIG. 5, a molten metal supply device 38 having a furnace body 36 and a crucible 37 is provided below the base 12 on which the two sets of molds 13 and 14 are mounted. The upper molds 40 and 40 supported by the drive device 39 are positioned above. In this embodiment, the lower dies 15, 15 are held by a support member 12 a fixed on the base 12.
The furnace body 36 includes a box-shaped main body 41 that opens upward, a lid body 42 that closes an upper opening portion of the main body 41, the crucible 37 that stores a molten metal 43, and the lid body The stalk 44 etc. which were attached to 42 and the lower end part was immersed in the said molten metal 43 are comprised. The main body 41 of the furnace body 36 incorporates a heater (not shown) for heating the molten metal 43 in the crucible 37 to a predetermined temperature and is connected to a pressurizing device (not shown). . This pressurizing device is for supplying an inert gas into the main body 41 during casting to push the molten metal 43 into the stalk 44.

  In this embodiment, a configuration is adopted in which the molten metal 43 is supplied from one crucible 37 to the two sets of molds 13 and 14. Specifically, in the casting machine 11 according to this embodiment, the lower mold 15 is held by the support member 12a fixed on the base 12, and the gate 45 of the lower mold 15 (see FIG. 5). The gate cup 46 supported by the support member 12 a is connected, and the stalk 44 is connected through the gate cup 46. The stalk 44 and the gate cup 46 are provided for each gate 45 (for each mold 13 and 14). The lower ends of the two stalks 44 are immersed in the same crucible 37.

  On the other hand, the driving device 39 provided on the upper part of the base 12 includes a tie bar 51 extending upward from the four corners of the base 12 and a platen 52 held in the middle of the tie bar 51 so as to be movable up and down. . The platen 52 supports the upper mold 40 of the mold 13 located on the left side in FIGS. 3 to 5 and the upper mold 40 of the mold 14 located on the right side in FIG. To go up and down. The upper mold 40 shown in FIG. 5 is in a state where the casting W is released from the lower mold 15 together with the upper mold 40 after the casting is finished and the mold is opened, and the cast W is fixed to the upper mold 40. It is drawn in.

In the casting machine 11 configured as described above, the first slide core 16 and the second slide core 17 can be driven by the third air cylinder 25 located outside the first slide core 16. Therefore, an occupied space for disposing the air cylinder is not required outside the second slide core 17. In this embodiment, another mold is disposed in the occupied space. However, when a casting machine is formed so as to have only one set of molds, a conventional casting machine corresponding to the occupied space is used. Further downsizing can be achieved.
As shown in this embodiment, by providing a plurality of molds so that the second slide cores 17 that do not require an occupied space for cylinder arrangement are adjacent to each other, the molds are arranged close to each other. It was possible to arrange a plurality of sets of dies 13 and 14 side by side in a narrow installation space.

Moreover, the casting machine 11 shown in FIGS. 3 to 5 has a configuration in which the upper mold 40 of the plurality of sets of molds 13 and 14 located on the base 12 is moved up and down by one upper mold driving device 39. Therefore, the number of use of the upper mold drive device can be reduced as compared with the case where the upper mold drive device is provided for each of the plurality of sets of molds 13 and 14, and installation of the casting machine 11 is occupied. Space can be narrowed. For this reason, a compact casting machine can be formed despite a plurality of sets of molds.
Furthermore, since the casting machine 11 shown in FIGS. 3 to 5 adopts a configuration in which molten metal is supplied from a single molten metal supply device 38 to a plurality of molds 13 and 14 located on the base 12, a plurality of casting machines 11 are used. The number of the molten metal supply devices used can be reduced as compared with the case where the molten metal supply devices are provided in the molds 13 and 14 respectively, and the installation occupation space of the casting machine 11 can be narrowed. For this reason, a compact casting machine can be formed despite a plurality of sets of molds.

  In the casting machine 11 described above, two slide cores (first slide core 16 and second slide core 17) can be driven by one air cylinder (third air cylinder 25). The number of air cylinders used can be reduced compared to the case where an air cylinder is provided every time. For this reason, coupled with the fact that the molten metal supply device 38 and the upper mold drive device 39 can be shared by the two molds 13 and 14, the number of parts can be reduced and the cost can be reduced.

  In addition to the embodiment shown in FIGS. 3 to 5, four sets of molds as shown in FIGS. 1 and 2 are provided on the base 12 side by side in a square shape in plan view. The fourth slide cores 18 and 19 and the first and second air cylinders 23 and 24 that drive the fourth slide cores 18 and 19 can employ the same drive system as the first and second slide cores 16 and 17. More specifically, in FIG. 1 and FIG. 2, two sets of molds 13 and 14 arranged in the left-right direction are arranged in the vertical direction of the same figure, and four sets of molds are formed. It is arranged on the base 12. By providing the molds in this way, two sets of molds 13 located on the left side in FIGS. 1 and 2 are arranged in the vertical direction of the figure, and two sets of the other molds 14 are arranged in the vertical direction of the figure. It becomes.

  Of the four sets of molds 13 and 14 arranged in this way, the first air cylinder 23 of the molds 13 and 14 constituting the mold group located on the upper side of the rice field is axially directed to the base 12. The cylinder body 23b of the first air cylinder 23 is connected to the fourth slide core 19 so as to be interlocked via a connecting member. Even in the case of adopting this configuration, the base 12 is also provided with a stopper for stopping the third slide core 18 in the fully open position. By adopting this configuration, the third and fourth slide cores 18 and 19 can be driven by the first air cylinder 23, and the second air cylinder 24 becomes unnecessary.

On the other hand, the dies 13 and 14 of the mold group located on the lower side of the rice field are formed so as to be symmetrical with the dies 13 and 14 located on the upper side. That is, the molds 13 and 14 of the lower mold group can drive the third and fourth slide cores 18 and 19 by the second air cylinder 24, so that the first air cylinder can be driven. 23 becomes unnecessary.
By configuring in this way, the distance between the two mold groups can be reduced, so that the four sets of molds 13 and 14 can be equipped while making the casting machine compact.

It is a top view which shows the structure of the lower metal mold | die and slide core of the casting machine which concerns on this invention. It is a top view which shows the structure of the lower metal mold | die and slide core of the casting machine which concerns on this invention. It is a top view which shows the lower metal mold | die and slide core in a mold-clamped state. It is a top view which shows the lower metal mold | die and slide core in a mold open state. It is a longitudinal cross-sectional view which shows the specific example of the casting machine which concerns on this invention. It is a top view which shows the structure of the conventional casting machine which has four slide cores.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Casting machine, 12 ... Base, 15 ... Lower mold, 16 ... 1st slide core, 17 ... 2nd slide core, 25 ... 3rd air cylinder, 25a ... Piston rod, 25b ... Cylinder main body, 26 ... 1st connection member, 27 ... Tie bar, 28 ... 2nd connection member, 29 ... Stopper, 34 ... Support member.

Claims (5)

  The upper die, the lower die, and the slide core constitute a die, and the lower die is fixed on the base, and the first and second slide cores facing each other are provided on the base so as to be movable. A casting machine that opens and closes these slide cores with a single cylinder, wherein the cylinder body of the cylinder is on the outside of the first slide core on the base, the axial direction of which is the opening and closing direction of the first slide core. Movably supported along the opening and closing direction so as to be parallel to the cylinder, and coupled to the cylinder body via a coupling member so as to be interlocked, and to the piston rod of the cylinder. A casting machine comprising: a slide core connected to one slide core, and a stopper for restricting movement of the first slide core in the opening direction at a fully open position.   2. The casting machine according to claim 1, wherein a plurality of molds having first and second slide cores and a cylinder are provided on one base, and the second slide cores are mutually connected. A casting machine, wherein the casting machines are arranged side by side on one base.   3. The casting machine according to claim 2, wherein two sets of molds each having a first and a second slide core are provided, and third and fourth slide cores facing each other are provided on the molds, respectively. Of the third and fourth slide cores, the third slide cores located on one side of the mold are connected to each other so as to interlock with each other, and the fourth slide located on the other side of the mold. A casting machine comprising: a cylinder that connects cores so as to be linked together, and a cylinder that drives the third slide cores; and a cylinder that drives the fourth slide cores.   4. The casting machine according to claim 2, wherein a plurality of sets of upper molds located on the base are moved up and down by a single upper mold driving device. The casting machine according to any one of claims 2 to 4, wherein the molten metal is supplied from a single molten metal supply device to a plurality of molds located on a base.

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