Sectional type pressure control die-casting die

Abstract

The utility model provides a sectional type pressure control die-casting die, which relates to the technical field of die-casting dies and comprises a longitudinal injection sleeve and a piston column, and a sinking groove matched with a cover plate and a lifting lug is formed in the center of one end, in extrusion contact with molten metal, of the piston column; an L-shaped liquid injection channel is formed in the piston column, a liquid inlet of the L-shaped liquid injection channel is formed in the top of the periphery of the piston column, and a liquid outlet of the L-shaped liquid injection channel is communicated with the sinking groove; the cover plate abuts against and covers the liquid outlet of the piston column. And when the piston column slides to return after finishing the pushing injection operation, the tail end of the six-edge sliding shaft is propped against and contacted with a tail end blocking plate of the longitudinal injection sleeve, and meanwhile, a liquid inlet of the L-shaped liquid injection channel is butted and communicated with a bottom side opening of a liquid injection pipe at the bottom of the liquid injection funnel. According to the utility model, the trouble of additionally and manually executing the on-off operation before and after the pushing injection operation can be saved, the operation and the use are simple, convenient and time-saving, and the production and use efficiency of the die-casting die can be indirectly improved.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold technology, and in particular to a segmented pressure control die casting mold. Background Technology

[0002] Segmented pressure-controlled die-casting molds are specifically designed for precision casting, particularly for manufacturing precious metal products such as gold bars. These molds optimize the casting process by applying varying pressures in stages, ensuring the quality and precision of the finished product.

[0003] Existing die-casting molds require connecting the container holding the molten metal or auxiliary components such as funnels to the injection sleeve before top-pressing injection of molten metal. This allows the molten metal to be injected into the injection sleeve. At the start of the top-pressing injection operation, the connection between the container or injection component and the injection sleeve must be disconnected to prevent the molten metal from being squeezed back into the container or sprayed out through the injection component under the pressure of the top press. However, in existing die-casting molds, both of these operations must be performed manually, which is cumbersome and time-consuming, indirectly reducing the production efficiency of the die-casting mold. Utility Model Content

[0004] In view of this, the present invention provides a segmented pressure control die casting mold to solve the problems of cumbersome and time-consuming operation and use of die casting molds and low production efficiency.

[0005] The technical solution proposed by this utility model is: a segmented pressure-controlled die-casting mold, specifically including a longitudinal injection sleeve and a piston column, wherein the piston column is slidably installed inside the longitudinal injection sleeve and is tightly fitted with its circumferential inner wall;

[0006] The top of the tail end of the longitudinal injection sleeve is welded with an injection funnel that communicates with it; a cover plate is installed on the piston column, a lifting lug is welded to the bottom of the cover plate, a hexagonal sliding shaft is welded to the lifting lug, the hexagonal sliding shaft is slidably engaged with the bottom side of the piston column, and a spring is fitted on the tail end of the hexagonal sliding shaft for pushing and positioning the hexagonal sliding shaft.

[0007] The piston rod has a recessed groove at the center of the end that is in contact with the molten metal, which is adapted to the cover plate and the lifting lug; an L-shaped injection channel is formed inside the piston rod, the inlet of the L-shaped injection channel is located at the top of the outer periphery of the piston rod, and the outlet of the L-shaped injection channel is connected to the recessed groove; the cover plate abuts against and seals the outlet of the piston rod; when the piston rod slides back to its original position after completing the push injection operation, the tail end of the hexagonal sliding shaft abuts against the tail end blocking plate of the longitudinal injection sleeve, and at the same time, the inlet of the L-shaped injection channel is connected to the bottom side opening of the injection pipe at the bottom of the injection funnel.

[0008] Furthermore, it also includes a hydraulic cylinder and a telescopic rod. The telescopic rod of the hydraulic cylinder slides through the end of the longitudinally placed injection sleeve and slides through it. The head end of the telescopic rod is fixedly connected to the end of the piston rod away from the cover plate.

[0009] Furthermore, it also includes a frame-shaped base, with an inverted L-shaped support plate and a vertical support plate welded to the middle of the top of the two long side rods of the frame-shaped base, respectively. The first end of the horizontal section of the L-shaped support plate is divided into a vertically downward bending structure, and a static mold is welded between the vertically downward bending part and the vertical support plate.

[0010] Furthermore, a hydraulic cylinder is fixedly installed at the upper middle position of the vertical section of the L-shaped support plate, and a moving mold is fixedly installed at the first end of the piston rod of the hydraulic cylinder.

[0011] Both the moving mold and the stationary mold have forming grooves arranged along their length in the middle of their opposite sides. When the moving mold and the stationary mold come into contact with each other, the two rows of forming grooves work together to form a complete and closed forming cavity.

[0012] Furthermore, a liquid distributor is welded to the side of the stationary mold away from the moving mold. The liquid distributor consists of a horizontal liquid distribution pipe and a row of vertical distribution pipes welded to the horizontal liquid distribution pipe. The row of vertical distribution pipes is connected to a row of forming grooves on the stationary mold.

[0013] The first end of the vertically placed injection sleeve is welded and fixed to the middle part of the horizontally placed liquid distribution tube, and is connected to the horizontally placed liquid distribution tube.

[0014] Furthermore, a ground support frame with a long U-shaped structure is welded onto the frame-shaped base, and six inverted L-shaped mounting rods are symmetrically welded to the top of the ground support frame.

[0015] Furthermore, a longitudinally placed injection sleeve is welded between the top portions of the four L-shaped mounting rods near the vertical support plate, and a hydraulic cylinder is fixed between the top portions of the remaining two L-shaped mounting rods.

[0016] The segmented pressure-controlled die-casting mold provided by this utility model has the following beneficial effects:

[0017] Through the power transmission of the hexagonal sliding shaft, the opening and closing operations of the cover plate on the injection funnel and the longitudinal injection sleeve can be driven by the reciprocating sliding driving force of the piston column during the top-push injection operation. Compared with the existing technology, this can save the trouble of manually performing the above opening and closing operations before and after the top-push injection operation. The operation is simple and time-saving, which helps to indirectly improve the production efficiency of die-casting molds. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the present invention.

[0020] In the attached diagram:

[0021] Figure 1 A schematic diagram of the overall structure of this utility model is shown;

[0022] Figure 2 A schematic diagram of the installation position structure of the hydraulic cylinder in this utility model is shown;

[0023] Figure 3 This diagram illustrates the state of separation between the static mold and the moving mold in this invention.

[0024] Figure 4 This invention shows a schematic diagram of the inner half-section of the longitudinally placed injection sleeve.

[0025] Figure 5 This diagram shows the state in which the tail end of the hexagonal sliding shaft and the tail end plug plate of the longitudinally placed injection sleeve are in contact.

[0026] Figure 6 A schematic diagram of the internal structure of the piston column in this invention is shown in half.

[0027] List of reference numerals in the attached diagram:

[0028] 1. Frame-shaped base; 101. L-shaped support plate; 102. Vertical support plate; 103. Ground contact support frame; 104. L-shaped mounting rod;

[0029] 2. Static mold; 201. Liquid distributor;

[0030] 3. Hydraulic cylinder;

[0031] 4. Moving mold;

[0032] 5. Vertically placed injection sleeve; 501. Injection funnel;

[0033] 6. Hydraulic cylinder; 601. Telescopic rod;

[0034] 7. Piston column; 701. Cover plate; 7011. Lifting lug; 702. Hexagonal sliding shaft; 703. Settling tank; 704. L-shaped injection channel; 7041. Inlet; 7042. Outlet;

[0035] 8. Hydraulic controller;

[0036] 9. Forming groove. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] Please refer to Figures 1 to 6 ;

[0039] Example 1:

[0040] This utility model proposes a segmented pressure-controlled die-casting mold, including a longitudinal injection sleeve 5 and a piston column 7, wherein the piston column 7 is slidably installed inside the longitudinal injection sleeve 5 and is tightly fitted with its circumferential inner wall.

[0041] The top of the tail end of the longitudinally placed injection sleeve 5 is welded with an injection funnel 501 that communicates with it; a cover plate 701 is installed on the piston column 7, and a lifting lug 7011 is welded to the bottom of the cover plate 701. A hexagonal sliding shaft 702 is welded to the lifting lug 7011. The hexagonal sliding shaft 702 slides through and engages with the bottom side of the piston column 7. A spring for pushing and positioning the hexagonal sliding shaft 702 is fitted on the tail end of the hexagonal sliding shaft 702.

[0042] The injection funnel 501 is used to guide and inject molten metal into the vertically placed injection sleeve 5;

[0043] The piston column 7 has a settling groove 703 in the center at the end that is in contact with the molten metal, which is adapted to the cover plate 701 and the lifting lug 7011; an L-shaped liquid injection channel 704 is provided inside the piston column 7, the inlet 7041 of the L-shaped liquid injection channel 704 is opened at the top of the outer periphery of the piston column 7, and the outlet 7042 is connected to the settling groove 703; the cover plate 701 abuts against and seals the outlet 7042 of the piston column 7.

[0044] Based on Example 1, Example 2:

[0045] A segmented pressure-controlled die-casting mold also includes a hydraulic cylinder 6 and a telescopic rod 601. The telescopic rod 601 of the hydraulic cylinder 6 is slidably engaged with the end plate of the longitudinally placed injection sleeve 5, and the head end of the telescopic rod 601 is fixedly connected to the end of the piston rod 7 away from the cover plate 701.

[0046] Preferably, it also includes a frame-shaped base 1, with an inverted L-shaped support plate 101 and a vertical support plate 102 welded to the middle of the top of the two long side rods of the frame-shaped base 1, respectively. The first end of the horizontal section of the L-shaped support plate 101 is divided into a vertically downward bending structure, and a static mold 2 is welded between the vertically downward bending part and the vertical support plate 102.

[0047] Preferably, a hydraulic cylinder 3 is fixedly installed at the upper middle position of the vertical section of the L-shaped support plate 101, and a moving mold 4 is fixedly installed at the first end of the piston rod of the hydraulic cylinder 3; the moving mold 4 and the stationary mold 2 are both provided with forming grooves 9 arranged along the length direction at the middle position of opposite sides; when the moving mold 4 and the stationary mold 2 abut and connect together, the two rows of forming grooves 9 connect together to form a complete and closed forming cavity.

[0048] The hydraulic cylinder 3 is used to extend and retract to drive the moving mold 4 and control the docking and disassembly of the moving mold 4 and the stationary mold 2. When the metal products are die-cast, the moving mold 4 and the stationary mold 2 need to be docked and combined together. When the cooled and formed metal products are unloaded, the moving mold 4 and the stationary mold 2 need to be separated.

[0049] Preferably, a liquid distributor 201 is welded to the side of the stationary mold 2 away from the moving mold 4. The liquid distributor 201 is composed of a horizontal liquid distribution pipe and a row of vertical distribution pipes welded to the horizontal liquid distribution pipe. The row of vertical distribution pipes is connected to a row of molding grooves 9 on the stationary mold 2. The first end of the vertical injection sleeve 5 is welded and fixed to the middle part of the horizontal liquid distribution pipe and is connected to the horizontal liquid distribution pipe.

[0050] When the piston column 7 slides toward the stationary mold 2, it will generate a top pressure squeezing effect on the molten metal injected into the longitudinal injection sleeve 5. Relying on this effect, the piston column 7 can inject the molten metal into a row of molding cavities through the liquid distributor 201. After the molten metal cools in the row of molding cavities, it forms a metal product of a specified shape.

[0051] When the piston rod 7 slides back to its original position away from the stationary mold 2 after completing the top-push injection operation, the tail end of the hexagonal sliding shaft 702 abuts against the tail end block plate of the longitudinal injection sleeve 5. At the same time, the inlet 7041 of the L-shaped injection channel 704 connects with the bottom opening of the injection pipe at the bottom of the injection funnel 501. During the above process, when the tail end of the hexagonal sliding shaft 702 abuts against the tail end block plate of the longitudinal injection sleeve 5, the tail end block plate of the longitudinal injection sleeve 5 can push back to drive the hexagonal sliding shaft 702 and the cover plate 701 to slide towards the stationary mold 2, control the cover plate 701 to detach from the sink 703 and separate from the outlet 7042 to open the outlet 7042, so that the injection funnel 501 automatically connects with the longitudinal injection sleeve 5 through the L-shaped injection channel 704, the inlet 7041 and the outlet 7042, so as to add molten metal to the longitudinal injection sleeve 5 again.

[0052] During the top-push injection operation, the connection between the injection funnel 501 and the longitudinal injection sleeve 5 must be disconnected to prevent the molten metal in the longitudinal injection sleeve 5 from being sprayed out through the injection funnel 501 under the top-push squeezing effect, causing burns and affecting the molding quality of the metal products.

[0053] After the molten metal is poured in, when the piston column 7 slides toward the stationary mold 2 again to perform the top injection operation, the liquid inlet 7041 follows the sliding of the piston column 7 and is disconnected from the bottom opening of the liquid injection tube at the bottom of the liquid injection funnel 501. At the same time, the tail end of the hexagonal sliding shaft 702 separates from the tail end blocking plate of the longitudinal injection sleeve 5. The hexagonal sliding shaft 702 is pushed back by the compressed spring on its tail end and resets to seal the liquid inlet 7041, closing the liquid inlet 7041 again. Under this condition, the connection between the liquid injection funnel 501 and the longitudinal injection sleeve 5 is automatically disconnected.

[0054] Based on the above, through the power transmission of the hexagonal sliding shaft 702, the opening and closing operations of the cover plate 701 on the injection funnel 501 and the longitudinal injection sleeve 5 can be driven by the reciprocating sliding driving force of the piston column 7 during the top-push injection operation. Compared with the existing technology, this can save the trouble of manually performing the above opening and closing operations before and after the top-push injection operation. The operation is simple and time-saving, which helps to indirectly improve the production efficiency of the die-casting mold.

[0055] Preferably, a ground support frame 103 with a long U-shaped structure is welded onto the frame base 1, and six inverted L-shaped mounting rods 104 are symmetrically welded to the top of the ground support frame 103.

[0056] Preferably, the top portions of the four L-shaped mounting rods 104 near the vertical support plate 102 are welded together with a longitudinal injection sleeve 5, and the top portions of the remaining two L-shaped mounting rods 104 are fixed with a hydraulic cylinder 6.

[0057] Both hydraulic cylinder 6 and oil cylinder 3 are connected to an external hydraulic drive system. The hydraulic drive system is used to provide hydraulic driving force to hydraulic cylinder 6 and oil cylinder 3. A hydraulic controller 8 is fixedly installed on an L-shaped mounting rod 104. The hydraulic controller 8 is used to adjust and control the magnitude of the driving force supplied by the hydraulic drive system to hydraulic cylinder 6. Through the hydraulic controller 8, the magnitude of the pushing driving force output by telescopic rod 601 and piston column 7, as well as the telescopic sliding speed of telescopic rod 601 and piston column 7, can be adjusted in segments to change the injection force and speed of piston column 7. This meets the needs of die casting processing of metal products of different materials under different working conditions, making the die casting mold more flexible and widely applicable. Furthermore, changing and adjusting the injection force and speed of piston column 7 is also beneficial to improving the processing quality and precision of metal products.

[0058] The working principle of this embodiment is as follows: the injection funnel 501 is used to guide the molten metal into the longitudinal injection sleeve 5, and the oil cylinder 3 is used to extend and retract to drive the moving mold 4 to control the docking and assembly and disassembly and separation of the moving mold 4 and the stationary mold 2. When the metal product is die-cast, the moving mold 4 and the stationary mold 2 need to be docked and assembled together. When the cooled and formed metal product is unloaded, the moving mold 4 and the stationary mold 2 need to be separated and detached.

[0059] When the piston column 7 slides toward the stationary mold 2, it will generate a top pressure squeezing effect on the molten metal injected into the longitudinal injection sleeve 5. Relying on this effect, the piston column 7 can inject the molten metal into a row of molding cavities through the liquid distributor 201. After the molten metal cools in the row of molding cavities, it forms a metal product of a specified shape.

[0060] Both hydraulic cylinder 6 and oil cylinder 3 are connected to an external hydraulic drive system. The hydraulic drive system is used to provide hydraulic driving force to hydraulic cylinder 6 and oil cylinder 3. A hydraulic controller 8 is fixedly installed on an L-shaped mounting rod 104. The hydraulic controller 8 is used to adjust and control the magnitude of the driving force supplied by the hydraulic drive system to hydraulic cylinder 6. Through the hydraulic controller 8, the magnitude of the pushing driving force output by telescopic rod 601 and piston column 7, as well as the telescopic sliding speed of telescopic rod 601 and piston column 7, can be adjusted in segments to change the injection force and speed of piston column 7, so as to meet the die casting processing of metal products of different materials under different working conditions.

[0061] The following points should be noted in this article:

[0062] 1. The accompanying drawings of this utility model embodiment only involve the structures involved in this utility model embodiment; other structures can refer to general designs.

[0063] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0064] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A segmented pressure-controlled die casting mold, comprising a longitudinal injection sleeve (5) and a piston column (7), wherein the longitudinal injection sleeve (5) is slidably installed with the piston column (7) in close contact with its circumferential inner wall; Its features are, The top of the tail end of the longitudinal injection sleeve (5) is welded with an injection funnel (501) communicating with it; a cover plate (701) is installed on the piston column (7), a lifting lug (7011) is welded to the bottom of the cover plate (701), a hexagonal sliding shaft (702) is welded on the lifting lug (7011), the hexagonal sliding shaft (702) is slidably connected to the bottom side of the piston column (7), and a spring for pushing and positioning the hexagonal sliding shaft (702) is fitted on the tail end of the hexagonal sliding shaft (702); The piston rod (7) has a recess (703) at the center of the end that contacts the molten metal, which is adapted to the cover plate (701) and the lifting lug (7011); an L-shaped injection channel (704) is provided inside the piston rod (7), the inlet (7041) of the L-shaped injection channel (704) is located at the top of the outer periphery of the piston rod (7), and the outlet (7042) of the L-shaped injection channel (704) is connected to the recess (7011). 03) Through; the cover plate (701) abuts against and seals the outlet (7042) of the piston column (7); when the piston column (7) slides back to its original position after completing the push injection operation, the tail end of the hexagonal sliding shaft (702) abuts against the tail end blocking plate of the longitudinal injection sleeve (5), and at the same time, the inlet (7041) of the L-shaped injection channel (704) is connected to the bottom side opening of the injection tube at the bottom of the injection funnel (501).

2. The segmented pressure-controlled die-casting mold according to claim 1, characterized in that, It also includes a hydraulic cylinder (6) and a telescopic rod (601). The telescopic rod (601) of the hydraulic cylinder (6) is slidably connected to the end plate of the longitudinally placed injection sleeve (5), and the head end of the telescopic rod (601) is fixedly connected to the end of the piston rod (7) away from the cover plate (701).

3. The segmented pressure-controlled die-casting mold according to claim 1, characterized in that, It also includes a frame base (1), and an inverted L-shaped support plate (101) and a vertical support plate (102) are welded to the middle of the top of the two long side rods of the frame base (1). The first end of the horizontal plate section of the L-shaped support plate (101) is divided into a vertically downward bending structure. The vertically downward bending part is welded to the vertical support plate (102) with a static mold (2).

4. The segmented pressure-controlled die-casting mold according to claim 3, characterized in that, A hydraulic cylinder (3) is fixedly installed at the upper middle position of the vertical section of the L-shaped support plate (101), and a moving mold (4) is fixedly installed at the first end of the piston rod of the hydraulic cylinder (3). The moving mold (4) and the stationary mold (2) are provided with forming grooves (9) arranged along the length direction at the middle position on opposite sides. When the moving mold (4) and the stationary mold (2) are brought together, the two rows of forming grooves (9) are joined together to form a complete and closed forming cavity.

5. The segmented pressure-controlled die-casting mold according to claim 4, characterized in that, The static mold (2) is welded to a liquid distributor (201) on the side away from the moving mold (4). The liquid distributor (201) is composed of a horizontal liquid distribution pipe and a row of vertical distribution pipes welded to the horizontal liquid distribution pipe. The row of vertical distribution pipes is connected to a row of forming grooves (9) on the static mold (2). The first end of the vertical injection sleeve (5) is welded and fixed to the middle part of the horizontal liquid distribution tube, and is connected to the horizontal liquid distribution tube.

6. The segmented pressure-controlled die-casting mold according to claim 3, characterized in that, The frame-shaped base (1) is welded with a ground support frame (103) in the form of a long strip U-shape, and six inverted L-shaped mounting rods (104) are symmetrically welded to the top of the ground support frame (103).

7. A segmented pressure-controlled die-casting mold according to claim 6, characterized in that, A longitudinally placed injection sleeve (5) is welded together between the top ends of four L-shaped mounting rods (104) near the vertical support plate (102), and a hydraulic cylinder (6) is fixed between the top ends of the remaining two L-shaped mounting rods (104).

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