Injection device with multiple injection heads and die casting machine

Abstract

The utility model provides a multi-injection-head injection device which comprises a first bottom beam, the first bottom beam and a second bottom beam which are horizontally arranged at intervals, a first fixing plate and a second fixing plate are installed on the first bottom beam and the second bottom beam respectively, a draw-in bolt is connected between the first fixing plate and the second fixing plate, and an injection mechanism is arranged below the draw-in bolt. One end of the injection mechanism is positioned outside the fixing plate II, and the other end of the injection mechanism sequentially penetrates through the fixing plate II and the fixing plate I and is positioned outside the fixing plate I; lifting mechanisms are arranged between the injection mechanism and the first bottom beam and between the injection mechanism and the second bottom beam respectively. A guide device is installed on the outer side of the second fixing plate. The number of the injection mechanisms is at least three. According to the injection device with the multiple injection heads and the die casting machine, cooperative work of the multiple injection heads can be achieved; the injection mechanism is driven by the lifting mechanism to move up and down along the guide device, so that the injection mechanism is adjusted to a proper height to meet different mold and injection requirements, the production efficiency is improved, and the casting quality is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of die casting machine technology, and in particular relates to a multi-pressure head injection device and a die casting machine. Background Technology

[0002] A die casting machine is a specialized piece of equipment used for pressure casting. It applies pressure to inject molten metal into a precision mold, where it cools and solidifies. After the mold is opened, the desired solid metal casting is obtained. With the advancement of technology and the rapid development of industrial production, die casting technology has been widely used in many industries such as automobiles, motorcycles, and home appliances. Especially when producing metal parts with complex shapes and high precision requirements, die casting technology has demonstrated its unique advantages.

[0003] Traditional die casting machines typically employ a single injection head design. This design is inefficient when dealing with multi-cavity molds or when multiple parts need to be injected simultaneously, failing to meet the demands of modern industrial production for high efficiency and high output. Furthermore, traditional die casting machines lack precise control over the molten metal during the injection process, potentially leading to defects such as internal bubbles and shrinkage cavities in the castings, thus affecting their quality and performance. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model aims to propose a multi-pressure head injection device and a die casting machine. By designing multiple pressure heads and multi-stage injection control, the multi-pressure head injection device and die casting machine effectively improve injection efficiency and the density and surface quality of castings.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A multi-head injection device includes a first base beam, a second base beam, a first fixed plate, a second fixed plate, a tension bolt, an injection mechanism, a lifting mechanism, and a guide device. The first base beam and the second base beam are horizontally spaced apart. The first fixed plate and the second fixed plate are respectively installed on the first base beam and the second base beam. The tension bolt connects the first fixed plate and the second fixed plate. The injection mechanism is located below the tension bolt. One end of the injection mechanism is located outside the second fixed plate, and the other end passes through the second fixed plate and the first fixed plate in sequence and is located outside the first fixed plate, thus injecting molten metal into the mold.

[0007] The injection mechanism is provided with lifting mechanisms between itself and the first and second bottom beams. A guide device is installed on the outside of the second fixed plate. The lifting mechanism drives the injection mechanism to move up and down along the guide device. The number of injection mechanisms is at least three.

[0008] Furthermore, the number of tensioning bolts is at least one set, and each set of tensioning bolts includes nut one, nut two, nut three and a tie rod. Nut one is installed on the inner side of the fixing plate one, and nut two and nut three are located on the inner and outer sides of the fixing plate two, respectively. One end of the tie rod is threaded to nut one, and the other end passes through the fixing plate two and is threaded to nut two and nut three.

[0009] Furthermore, the injection mechanism includes an injection chamber, one end of which is located outside the fixed plate, and the other end is provided with a sprue and passes through the fixed plate to be slidably connected to an injection rod. The injection rod moves forward to push the molten metal into the mold. The end of the injection rod away from the fixed plate is connected to a piston rod. The piston rod is connected to a piston. Both the piston rod and the piston are located in a cylinder and move telescopically along the cylinder. The end of the cylinder away from the injection rod passes through a fixed plate and is connected to a fixed seat.

[0010] The upper part of the fixed seat 1 is connected to the accumulator 1, and the lower part is provided with an oil inlet 1; the inner cavity of the fixed seat 1 is connected to the inner cavity of the fixed seat 2, and the inner cavity of the fixed seat 1 and the inner cavity of the fixed seat 2 are equipped with a piston rod 2 and a piston 2. One end of the piston rod 2 is equipped with a piston 2, and the other end is provided with an oil inlet 2, so that the piston rod 2 and the piston 2 form cavity a with the inner cavity of the fixed seat 1 and the inner cavity of the fixed seat 2, and the piston 1 and the piston rod 2 form cavity b. Cavity a and cavity b are connected through oil inlet 2, and the piston rod 2 can slide along the cylinder body;

[0011] The upper part of the fixed base 2 is connected to the accumulator 2, and the side of the fixed base 2 away from the fixed base 1 is provided with an oil inlet 3.

[0012] Furthermore, an injection punch is installed at one end of the injection rod near the injection chamber, and the injection punch is made of mold steel.

[0013] Furthermore, the fixed plate has a waist-shaped hole for the injection chamber to pass through and move up and down.

[0014] Furthermore, a set of lifting mechanisms is provided inside the fixed plate, with the bottom of the lifting mechanism installed on the fixed plate and the upper telescopic end connected to the injection chamber.

[0015] Furthermore, the lifting mechanism includes a base and a hydraulic cylinder, the base being installed on bottom beam one and bottom beam two respectively, and the hydraulic cylinder being installed on the base;

[0016] The hydraulic cylinder includes a sleeve, a flange, a plunger, and a sealing flange. The flange is installed at the bottom of the sleeve, and the flange has an oil inlet. The plunger is slidably installed inside the sleeve, and a sealing flange is provided between the plunger and the sleeve. The upper part of the plunger is threaded.

[0017] Furthermore, the guiding device includes a bracket, a fixed guide rail, a slider one, and a slider two. The bracket is mounted on a fixed plate two, and the fixed guide rail is mounted on the bracket. The slider one is L-shaped, with its horizontal end mounted on one side of a fixed base one, and its vertical part slidably connected to the fixed guide rail. The slider two is mounted on the inner side of the horizontal part, and the slider two is slidably connected to the fixed guide rail.

[0018] Furthermore, the fixed guide rail is provided with a protrusion, and the slider one and slider two are respectively provided with a groove that mates with the corresponding protrusion.

[0019] A die-casting machine includes a multi-head injection device as described in any of the preceding technical solutions.

[0020] Compared with existing technologies, the multi-pressure injection head device and die-casting machine described in this utility model have the following advantages:

[0021] (1) The multi-pressure head injection device and die casting machine of this utility model have at least three injection mechanisms, which can realize the coordinated work of multiple injection heads; the lifting mechanism drives the injection mechanism to move up and down along the guide device to adjust the injection mechanism to a suitable height to adapt to different molds and injection requirements; through a precise mechanical structure and hydraulic control system, the precise injection of molten metal is realized, thereby improving production efficiency and ensuring the quality of castings.

[0022] (2) The multi-head injection device and die-casting machine described in this utility model, through three stages of pressure control, can precisely adjust the pressure according to different stages of the injection process, optimize injection conditions, and improve the consistency and reliability of castings. The slow injection stage effectively reduces the possibility of gas entrapment in the molten metal during the injection process, thereby reducing porosity and other defects inside the casting. The fast injection stage ensures that the molten metal can quickly fill the mold, improving production efficiency and helping to obtain more uniform and dense castings. The pressurization stage increases the pressure at the end of filling to ensure that the molten metal can completely fill every corner of the mold, reducing defects such as shrinkage cavities and porosity, and improving the overall quality of the casting. This injection mechanism can adapt to different injection speeds and pressure requirements, has good adaptability and flexibility, and is suitable for a variety of different die-casting applications. Attached Figure Description

[0023] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0024] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0025] Figure 2 A cross-sectional view of the overall structure provided for an embodiment of this utility model;

[0026] Figure 3 A cross-sectional view of the injection mechanism provided in an embodiment of this utility model;

[0027] Figure 4 for Figure 3 Enlarged view of part A in the diagram;

[0028] Figure 5 This is a schematic diagram of a fixing plate structure provided in an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the second fixing base provided in an embodiment of the present utility model;

[0030] Figure 7 A cross-sectional view of the hydraulic cylinder structure provided in an embodiment of this utility model;

[0031] Figure 8 for Figure 7 A magnified view of part C;

[0032] Figure 9 A top view of the overall structure provided for an embodiment of this utility model;

[0033] Figure 10 for Figure 9 Partial sectional view of B in the middle.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Bottom beam one; 2. Bottom beam two; 3. Fixing plate one; 31. Oblong hole; 4. Fixing plate two; 5. Tensioning bolt; 51. Nut one; 52. Nut two; 53. Nut three; 54. Tie rod; 6. Injection mechanism; 601. Injection chamber; 6011. Slug inlet; 602. Injection rod; 6021. Injection punch; 603. Piston rod one; 604. Piston one; 605. Cylinder body; 606. Fixing seat one; 607. Accumulator one; 608. Oil inlet 1. Fixed base 2. Piston rod 2. Piston 2. Piston 2. Oil inlet 2. Oil inlet 2. Oil inlet 3. Oil inlet 4. Oil inlet 5. Oil inlet 6. Piston 6. Piston rod 2. Piston 6. Piston rod 2. Piston rod 3. Piston rod 4. Oil inlet 5. Oil inlet 6. Piston 6. Piston rod 7. Piston rod 8. Piston rod 9. Oil inlet 1. Piston rod 1. Piston rod 1. Piston rod 2. Oil inlet 1. Piston rod 1. Piston rod 2. Oil inlet 1. Piston rod 1. Piston rod 2. Oil inlet 1. Piston rod 1. Piston rod 2. Oil inlet 1. Piston rod 1. Piston rod 2. Piston rod ... Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0037] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] like Figures 1 to 10 As shown, a multi-head injection device includes a base beam 1, a base beam 2, a fixing plate 3, a fixing plate 4, a tension bolt 5, an injection mechanism 6, a lifting mechanism 7, and a guide device 8. The base beam 1 and base beam 2 are horizontally spaced apart. The fixing plate 3 and fixing plate 4 are respectively installed on the base beam 1 and base beam 2. The tension bolt 5 connects the fixing plate 3 and fixing plate 4. The injection mechanism 6 is located below the tension bolt 5. One end of the injection mechanism 6 is located outside the fixing plate 4, and the other end passes through the fixing plate 4 and fixing plate 3 in sequence and is located outside the fixing plate 3, for injection. The lifting mechanism 7 is respectively provided between the injection mechanism 6 and the base beam 1 and base beam 2. The guide device 8 is installed on the outside of the fixing plate 4 (on the side away from the fixing plate 3). The lifting mechanism 7 drives the injection mechanism 6 to move up and down along the guide device 8. The number of injection mechanisms 6 is at least three sets.

[0041] The injection mechanism 6 described in this utility model has at least three sets, which can realize the coordinated work of multiple injection heads; the lifting mechanism 7 drives the injection mechanism 6 to move up and down along the guide device 8 to adjust the injection mechanism 6 to a suitable height to adapt to different molds and injection requirements; through a precise mechanical structure and hydraulic control system, precise injection of molten metal is realized, improving production efficiency and ensuring casting quality.

[0042] Fixing plate 1 (3) and fixing plate 2 (4) are respectively fixed to bottom beam 1 (1) and bottom beam 2 (2) by bolts.

[0043] In a preferred embodiment of this utility model, the number of tension bolts 5 is at least one set, and each set of tension bolts 5 includes a first nut 51, a second nut 52, a third nut 53 and a pull rod 54. The first nut 51 is installed on the inner side of the first fixing plate 3, and the second nut 52 and the third nut 53 are located on the inner and outer sides of the second fixing plate 4, respectively. One end of the pull rod 54 is threaded to the first nut 51, and the other end passes through the second fixing plate 4 and is threaded to the second nut 52 and the third nut 53.

[0044] In practical use, nut 51 is welded to the inner side of fixed plate 3, while nuts 52 and 53 are located on the inner and outer sides of fixed plate 4, respectively. Tie rod 54, fixed plate 3, and fixed plate 4 form a prestressed frame. When it is necessary to tighten fixed plate 3 and fixed plate 4, rotating tie rod 54 generates axial force between nuts 51, 52, and 53, thus achieving a tight connection between the two fixed plates. Tightening bolts 5 prevents displacement or loosening of the fixed plates during use, ensuring the stability and reliability of the entire injection device.

[0045] In a preferred embodiment of this utility model, the injection mechanism 6 includes an injection chamber 601. One end of the injection chamber 601 is located outside the fixed plate 3, and the other end is provided with a pouring port 6011 and passes through the fixed plate 3 to be slidably connected to the injection rod 602. The injection rod 602 moves forward to push the molten metal into the mold. The end of the injection rod 602 away from the fixed plate 3 is connected to the piston rod 603. The piston rod 603 is connected to the piston 604. Both the piston rod 603 and the piston 604 are located inside the cylinder 605 and move telescopically along the cylinder 605. The end of the cylinder 605 away from the injection rod 602 passes through the fixed plate 4 and is connected to the fixed seat 606.

[0046] The upper part of the fixed seat 606 is connected to the accumulator 607, and the lower part is provided with an oil inlet 608. The inner cavity of the fixed seat 606 is connected to the inner cavity of the fixed seat 609. The piston rod 610 and the piston 611 are installed in the inner cavities of the fixed seat 606 and the fixed seat 609. The piston rod 610 has the piston 611 installed at one end and an oil inlet 612 at the other end, so that the piston rod 610 and the piston 611 form cavity a with the inner cavities of the fixed seat 606 and the fixed seat 609. The piston 604 and the piston rod 610 form cavity b. Cavities a and b are connected through the oil inlet 612. The piston rod 610 can slide along the cylinder 605.

[0047] The upper part of the second fixed base 609 is connected to the second accumulator 613, and the second fixed base 609 is provided with an oil inlet 614 on the side away from the first fixed base 606.

[0048] An injection punch 6021 is installed at one end of the injection rod 602 near the injection chamber 601. The injection punch 6021 is made of mold steel.

[0049] In practical use, the injection punch 6021 is made of high-temperature resistant mold steel. The injection rod 602 is bolted to the piston rod 603, which is threaded to the piston 604. The piston rod 610 and piston 611 are also threaded together. The end of the cylinder 605 is bolted to the fixed seat 606, which is bolted to the fixed seat 609. A connecting block 615 is provided at the inner cavity connection.

[0050] During injection, oil is introduced into chamber a through oil inlet 608, and the oil enters chamber b through oil inlet 612, pushing piston 604 forward to perform the first stage of slow injection. Slow injection helps prevent gas from being drawn into the injection chamber 601 in the molten metal, thereby reducing bubbles and defects in the casting.

[0051] When the injection punch 6021 of the injection rod 602 moves past the sprue 6011, the control oil valve of the accumulator 607 is opened, allowing the hydraulic oil in its lower chamber to quickly enter the b chamber through the a chamber, causing the oil volume in the b chamber to increase rapidly, thus achieving the second stage of rapid injection. The rapid increase in hydraulic pressure pushes the piston 604 to accelerate, achieving rapid injection by the injection punch 6021, ensuring that the molten metal fills the mold quickly and evenly.

[0052] When the mold injection filling is completed, the resistance to the advancement of the injection punch 6021 increases instantaneously. At this time, the resistance is fed back to the control system, which opens the control oil valve of the accumulator 613, thereby pushing the piston 611 and piston rod 610 forward to achieve the third stage of pressurization. During the pressurization process, as the piston 611 and piston rod 610 are pushed forward, the oil inlet 612 closes, making chamber b a closed chamber, and chamber a also a closed chamber. The pressure of chambers a, b, and the hydraulic oil in the accumulator 613 works together to increase the injection force, thereby pressurizing the molten metal and ensuring the density and integrity of the casting.

[0053] In a preferred embodiment of the present invention, the fixing plate 3 is provided with a waist-shaped hole 31 for the injection chamber 601 to pass through and move up and down.

[0054] The fixed plate 3 has a hollow structure inside. A set of lifting mechanisms 7 is provided inside the fixed plate 3. The bottom of the lifting mechanism 7 is installed on the fixed plate 3, and the upper telescopic end is connected to the injection chamber 601.

[0055] In practical use, the design of the waist-shaped hole 31 enhances the adaptability of the injection mechanism 6 to different molds, so that the same injection mechanism 6 can be used for a variety of different molds and injection tasks, and the height of the injection mechanism 6 can be flexibly adjusted by the lifting mechanism 7.

[0056] In a preferred embodiment of the present invention, the lifting mechanism 7 includes a base 71 and a hydraulic cylinder 72. The base 71 is correspondingly mounted on the bottom beam 1 and the bottom beam 2, and the hydraulic cylinder 72 is mounted on the base 71.

[0057] The hydraulic cylinder 72 includes a sleeve 721, a flange 722, a plunger 723, and a sealing flange 724. The flange 722 is installed at the bottom of the sleeve 721, and the flange 722 is provided with an oil inlet 7221. The plunger 723 is slidably installed inside the sleeve 721, and a sealing flange 724 is provided between the plunger 723 and the sleeve 721. The upper part of the plunger 723 is provided with threads.

[0058] In actual use, there are multiple lifting mechanisms 7. In this embodiment, each injection mechanism 6 is connected to three lifting mechanisms 7. When it is necessary to adjust the height of the injection mechanism 6, pressurized oil is introduced through the oil inlet 7221. The oil pressure pushes the plunger 723 to move up and down within the sleeve 721. The movement of the plunger 723 drives the injection mechanism 6, which is threaded to it, to achieve the lifting and lowering of the injection mechanism 6. This adapts to different molds and injection requirements. The quick and precise lifting and lowering adjustment reduces the time required for changing molds or adjusting positions, thus improving production efficiency.

[0059] In a preferred embodiment of this utility model, the guiding device 8 includes a bracket 81, a fixed guide rail 82, a first slider 83, and a second slider 84. The bracket 81 is mounted on a second fixed plate 4, and the fixed guide rail 82 is mounted on the bracket 81. The first slider 83 is L-shaped, with its horizontal end mounted on one side of a first fixed seat 606, and its vertical part slidably connected to the fixed guide rail 82. The second slider 84 is mounted on the inner side of the horizontal part and is slidably connected to the fixed guide rail 82.

[0060] The fixed guide rail 82 is provided with a protrusion, and the slider 1 83 and slider 2 84 are respectively provided with a groove that mates with the corresponding protrusion.

[0061] In actual use, bracket 81 is welded to fixed plate 2 4, fixed guide rail 82 is bolted to bracket 81, slider 1 83 is welded to fixed seat 1 606, and slider 2 84 is bolted to slider 1 83. The design of guide device 8 provides precise guidance control, ensuring the stability and accuracy of injection mechanism 6 during lifting and lowering, and reducing casting defects caused by guidance errors.

[0062] The working principle of the above-mentioned multi-pressure injection head device is as follows:

[0063] According to the position of the mold gate, the injection mechanism 6 is adjusted to a suitable height by the lifting mechanism 7. After the adjustment is completed, the molten metal is poured into the injection chamber 601 through the sprue 6011. Then, oil is introduced into the a chamber through the oil inlet 608. The oil enters the b chamber through the oil inlet 612, pushing the piston 604 forward to perform the first stage of slow injection, preventing gas from being drawn into the injection chamber 601.

[0064] When the injection punch 6021 of the injection rod 602 moves past the pouring port 6011, the control oil valve of the accumulator 607 is opened, so that the hydraulic oil in its lower chamber enters the b chamber quickly through the a chamber, so that the oil volume in the b chamber increases rapidly, and the second stage of rapid injection is achieved.

[0065] When the mold injection filling is completed, the resistance of the injection punch 6021 increases instantaneously. At this time, the resistance is fed back to the control system, which controls the control oil valve of the accumulator 613 to open, thereby pushing the piston 611 and piston rod 610 forward to achieve the third stage of pressurization.

[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-ram head injection apparatus, characterized by: The utility model relates to a metal injection molding machine, including bottom beam one (1), bottom beam two (2), fixed plate one (3), fixed plate two (4), tension bolt (5), injection mechanism (6), lifting mechanism (7) and guiding device (8), bottom beam one (1) and bottom beam two (2) are horizontally spaced, bottom beam one (1), bottom beam two (2) install fixed plate one (3), fixed plate two (4) respectively, fixed plate one (3) and fixed plate two (4) are connected tension bolt (5), tension bolt (5) below is equipped with injection mechanism (6), one end of injection mechanism (6) is located outside fixed plate two (4), and the other end passes fixed plate two (4), fixed plate one (3) in proper order and is located outside fixed plate one (3), and metal solution is injected into mould, Injection mechanism (6) is equipped with lifting mechanism (7) between bottom beam one (1), bottom beam two (2) respectively, fixed plate two (4) outside is equipped with guiding device (8), lifting mechanism (7) drives injection mechanism (6) and moves up and down along guiding device (8), the number of injection mechanism (6) is at least three groups.

2. The multi-ram head injection apparatus of claim 1, wherein: The number of tension bolt (5) is at least one group, and each group of tension bolt (5) includes nut one (51), nut two (52), nut three (53) and pull rod (54), nut one (51) is installed inside fixed plate one (3), nut two (52), nut three (53) are located inside and outside of fixed plate two (4) respectively, one end of pull rod (54) is connected with nut one (51) screw thread, and the other end passes through fixed plate two (4) and is connected with nut two (52), nut three (53) screw thread.

3. The multi-tip injection device of claim 1, wherein: Injection mechanism (6) includes injection chamber (601), one end of injection chamber (601) is located outside fixed plate one (3), and the other end is equipped with pouring opening (6011) and passes through fixed plate one (3) and is connected with injection rod (602) sliding, injection rod (602) moves forward, and metal solution is pushed to the mould and moves, one end of injection rod (602) away from fixed plate one (3) is connected with piston rod one (603), piston rod one (603) is connected with piston one (604), and piston rod one (603) and piston one (604) are located in cylinder body (605) and carry out telescopic motion along cylinder body (605), one end of cylinder body (605) away from injection rod (602) passes through fixed plate two (4) and is connected with fixed seat one (606), The upper part of the fixed seat one (606) is communicated with the energy accumulator one (607), and the lower part is provided with the oil inlet one (608); the inner cavity of the fixed seat one (606) is communicated with the inner cavity of the fixed seat two (609), and the inner cavity of the fixed seat one (606) and the inner cavity of the fixed seat two (609) are provided with the piston rod two (610) and the piston two (611); one end of the piston rod two (610) is provided with the piston two (611), and the other end is provided with the oil inlet two (612), so that the piston rod two (610) and the piston two (611) are communicated with the inner cavity of the fixed seat one (606) and the inner cavity of the fixed seat two (609) to form a cavity a, the piston one (604) and the piston rod two (610) form a cavity b, the cavity a and the cavity b are communicated through the oil inlet two (612), and the piston rod two (610) can slide along the cylinder body (605); The upper part of the fixed seat two (609) is communicated with the energy accumulator two (613), and the side of the fixed seat two (609) away from the fixed seat one (606) is provided with the oil inlet three (614).

4. The multi-ram head injection apparatus of claim 3, wherein: The injection rod (602) is provided with the injection punch (6021) at one end close to the injection chamber (601), and the injection punch (6021) is made of die steel.

5. The multi-tip injection device of claim 3, wherein: The fixed plate one (3) is provided with the waist-shaped hole (31) for the injection chamber (601) to pass through and lift.

6. The multiple-tip injection device of claim 3, wherein: The fixed plate one (3) is provided with a group of lifting mechanisms (7), the bottom of the lifting mechanism (7) is mounted on the fixed plate one (3), and the upper telescopic end is connected with the injection chamber (601).

7. The multiple-tip injection device of claim 1, wherein: The lifting mechanism (7) comprises a base (71) and a hydraulic cylinder (72), the base (71) is mounted on the bottom beam one (1) and the bottom beam two (2), and the hydraulic cylinder (72) is mounted on the base (71). The hydraulic cylinder (72) comprises a sleeve (721), a flange (722), a plunger (723) and a sealing flange (724), the bottom of the sleeve (721) is provided with the flange (722), and the flange (722) is provided with the oil inlet four (7221); the plunger (723) is slidably mounted in the sleeve (721), and the sealing flange (724) is arranged between the plunger (723) and the sleeve (721); and the upper part of the plunger (723) is provided with a thread.

8. The multiple-tip injection device of claim 3, wherein: The guide device (8) comprises a bracket (81), a fixed guide rail (82), a sliding block one (83) and a sliding block two (84), the bracket (81) is mounted on the fixed plate two (4), and the fixed guide rail (82) is mounted on the bracket (81); the sliding block one (83) is L-shaped, the end of the horizontal part is mounted on one side of the fixed seat one (606), and the vertical part of the sliding block one (83) is slidably connected with the fixed guide rail (82); the sliding block two (84) is mounted on the inner side of the horizontal part, and the sliding block two (84) is slidably connected with the fixed guide rail (82).

9. The multi-ram head injection apparatus of claim 8, wherein: The fixed guide rail (82) is provided with a protruding part, and the sliding block one (83) and the sliding block two (84) are respectively provided with a sliding groove matched with the corresponding protruding part.

10. A die casting machine characterized by: The injection device comprises the multi-injection head injection device.

Images