A horizontal hot chamber die casting machine

Abstract

This utility model discloses a horizontal hot chamber die casting machine, including an injection mechanism, a mold mechanism, and a lifting mechanism for driving the injection mechanism to rise and fall. The mold mechanism includes a fixed base plate, a fixed mold, a moving mold, a moving base plate, and a tail plate arranged sequentially in a horizontal direction, and an opening and closing mold driving device installed on the tail plate. The fixed mold is installed on the fixed base plate, and the moving mold is installed on the moving base plate. The moving base plate and the tail plate are respectively fitted onto multiple tie rods connecting the machine frame through multiple sleeve holes. A gating cavity is formed between the moving mold and the fixed mold. A horizontally extending gating channel is formed between the side of the moving mold and the side of the fixed mold. The injection mechanism includes an injection nozzle. The discharge end of the injection nozzle is hemispherical. The injection nozzle is inclined to the mold mechanism, and the central axis of the gating channel does not coincide with the central axis of the injection channel of the injection nozzle. The discharge end of the injection nozzle can be used to fit against the inner wall of the gate of the gating channel. This utility model can prevent misalignment when the moving mold and the fixed mold are closed.

Description

Technical Field

[0001] This utility model relates to the technical field of hot chamber die casting machines, specifically to a horizontal hot chamber die casting machine. Background Technology

[0002] A hot chamber die casting machine is an industrial casting machine that injects molten metal into a mold under pressure to cool and solidify, resulting in a solid metal casting after the mold is opened. Its working principle is based on pressure and speed control, and the specific process is as follows: First, the metal (usually lead, zinc, tin, etc.) is heated to its melting point. Then, the molten metal is injected into the mold's gating cavity under high pressure and high speed through an injection mechanism. The cooling water inside the mold rapidly cools and solidifies the metal, and finally, the mold is opened to remove the finished product for further processing.

[0003] Currently, in horizontal hot chamber die casting machines, the nozzle angle must be set upwards. The advantage of this design is that after injection, any molten metal remaining at the gate of the mold's gating system when it separates from the nozzle can flow back into the pressure chamber through the nozzle's injection channel. If the nozzle were not tilted upwards, the molten metal remaining in the injection channel would flow out of the nozzle and drip outside the nozzle outlet. This dripping metal would quickly solidify into a hard lump, affecting the next production cycle.

[0004] Because the injection nozzle and mold of commercially available hot chamber die casting machines are coaxial (i.e., their central axes coincide) with the gating channel of the mold and the injection channel of the nozzle, the mold opening and closing drive device and the mold of the hot chamber die casting machine must be tilted according to the tilt angle of the injection nozzle. For example, patent announcement number CN217990887U discloses a high-speed die casting machine with a side-feed standard common mold base, which specifically discloses a die casting mold base, a slide plate, a slide base, a slide drive device, a furnace, a material pot, and an injection drive device. The die casting mold base is horizontally installed on the top of the slide plate. The die casting mold base includes a fixed mold, a movable mold, and a mold opening and closing drive device. The fixed mold is fixedly installed on the top of the slide plate, and the movable mold is movably installed on the top of the slide plate. The mold opening and closing drive device is connected to the movable mold and can drive the movable mold to move closer to or away from the fixed mold for mold opening or closing movements. A feed inlet is formed between the side of the fixed mold and the side of the movable mold, connecting the forming cavity of the fixed mold and the movable mold. The slide plate is slidably mounted on the top of the slide base. The slide drive device is connected to the slide plate and can drive the die-casting mold frame on the slide plate to move closer to or away from the material pot. The furnace is located on one side of the die-casting mold frame, and the material pot is installed inside the furnace. The injection drive device is mounted above the furnace, and the pressing part of the injection drive device can move up and down within the material cavity of the material pot. The nozzle part of the material pot can be connected to the feed inlet formed between the side of the fixed mold and the side of the movable mold. The top of the slide base is inclined downwards towards the furnace, so that the die-casting mold frame and the slide plate are also inclined downwards accordingly. The material container includes a container body, a sleeve, a ball valve, and a nozzle. The sleeve is installed longitudinally inside the container body. The sleeve has a pressing chamber for the pressing part of the injection drive device to insert into. The bottom of the sleeve has a sleeve inlet hole, and the side wall of the sleeve has a sleeve outlet hole near the bottom. The bottom of the container body has a container inlet hole that communicates with the sleeve inlet hole. The container body has an outlet channel inside, the lower end of which communicates with the sleeve outlet hole, and the upper end of which extends upward at an angle to the neck outlet of the container body. The nozzle is installed at the outlet of the container body. The ball valve is located at the bottom of the sleeve and can fall into the upper recess of the sleeve outlet hole.The mold opening and closing drive device includes a tail plate, a mold opening and closing drive cylinder, a transmission block, an upper transmission hinge, and a lower transmission hinge. The tail plate is fixed to the top of the slide plate. The upper and lower transmission hinges are respectively connected between the tail plate and the movable mold. The mold opening and closing drive cylinder is installed on the back of the tail plate. The output rod of the mold opening and closing drive cylinder passes through the tail plate and is connected to the transmission block. The upper end of the transmission block is hinged to the middle joint of the upper transmission hinge through the upper hinge block. The lower end of the transmission block is hinged to the middle joint of the upper transmission hinge through the lower hinge block. Guide posts are provided at the four corners of the tail plate and the fixed mold. Each guide post passes through the movable mold.

[0005] However, there is still room for improvement in the aforementioned high-speed die-casting machine with a standard common mold frame and side feed. For example, in actual use, a load-bearing sliding foot is installed at the bottom of the movable mold to cooperate with the guide rail on the slide plate, in order to support the weight of the movable mold, fixed mold, and mold opening / closing drive device. Therefore, during actual operation, the movable mold is constantly reciprocating on the guide post. However, since the movable mold, guide post, and mold opening / closing drive device all need to be tilted, the center of gravity of the weight of the tilted movable mold, guide post, and mold opening / closing drive device is no longer entirely on the load-bearing sliding foot and guide rail, resulting in an off-center load on the load-bearing sliding foot and guide rail. Moreover, due to gravity, a large portion of the weight will be loaded on the guide post, and the greater the tilt angle of the above components, the greater the loaded weight will be. In this situation, during the movement of the movable mold, significant friction occurs between the sleeve hole on the movable mold used to accommodate the guide post and the guide post. Specifically, the lower side (the downward-facing side) of the sleeve hole on the movable mold and the guide post bear a greater external force due to gravity, making the lower side of the sleeve hole on the movable mold and the guide post more prone to wear than other locations. If lateral wear occurs between the sleeve hole and the guide post of the movable mold, it can easily cause a deviation in the mold closing position between the movable mold and the fixed mold, which can easily lead to misalignment between the movable mold and the fixed mold, resulting in misalignment of the parting line and ultimately affecting the production quality of the product.

[0006] In addition, according to the requirements of the die casting process, some products need to be injected into the middle or lower part of the mold. The common method is to adjust the injection mechanism of the die casting machine to the appropriate height before injection. Therefore, the lifting mechanism plays a very important role in the production process of the die casting machine. Authorization announcement number CN204892901U discloses an injection device for a cold chamber die casting machine, specifically including a base, a two-speed accumulator and a booster accumulator mounted on the base, a cylinder mounted inside the base, a feeding cylinder mounted inside the cylinder, and a lifting mechanism; the output end of the feeding cylinder is connected to an injection punch, and the other end is provided with a booster piston rod extending into the cylinder; the portion of the booster piston rod extending into the cylinder is provided with a floating piston; the booster piston rod is connected to a booster piston; a booster chamber is provided between the output pipe of the booster accumulator and the booster piston; a gap is provided between the outer wall of the booster piston rod and the base, the gap being a first injection chamber; a second injection chamber is provided between the floating piston and the feeding cylinder; the first and second injection chambers are connected; the two-speed accumulator is connected to the first injection chamber; the lifting mechanism is connected to the base, and the lifting mechanism drives the base to move up and down. The lifting mechanism includes a lifting cylinder, and the piston of the lifting cylinder is fixedly connected to the base.

[0007] However, there is room for improvement in the injection device of the aforementioned cold chamber die casting machine. For example, although it can quickly adjust the height of the injection punch through a lifting mechanism, this lifting mechanism only uses a lifting cylinder to directly drive the base for lifting. This design is not stable enough in overall use. For instance, the different positions of the base (such as the four corners) may be inconsistent during the lifting process, meaning that the lifting height of different positions is prone to inconsistency, which in turn leads to unstable and inaccurate height adjustment of the injection punch. Utility Model Content

[0008] To address the problems existing in the prior art, the purpose of this utility model is to provide a horizontal hot chamber die casting machine that can reduce the friction between the sleeve hole of the moving mold base plate and the tie rod, thereby avoiding side wear of the sleeve hole of the moving base plate and the tie rod, and making it less likely for misalignment to occur when the moving mold and the fixed mold are closed. In addition, the lifting mechanism is equipped with two connecting rod balancing components, each with a balance tie rod and two two-linkage rods, which can ensure high consistency of the lifting cylinder in driving the lifting seat to lift, that is, improve the lifting consistency of the lifting seat in various positions, thereby making the lifting of the injection nozzle of the injection mechanism more stable and accurate.

[0009] To achieve the above objectives, the technical solution of this utility model is as follows:

[0010] A horizontal hot chamber die casting machine includes an injection mechanism and a mold mechanism respectively mounted on a frame and cooperating with each other, and a lifting mechanism mounted on the frame for driving the injection mechanism to move up and down; the mold mechanism includes a fixed base plate, a fixed mold, a moving mold, a moving base plate and a tail plate arranged sequentially in a horizontal direction, and a mold opening and closing drive device mounted on the tail plate for driving the moving base plate and the moving mold to move horizontally; the fixed mold is mounted on the fixed base plate, and the moving mold is mounted on the moving base plate; the moving base plate and the tail plate... Each part is fitted onto multiple tie rods connecting the frame through multiple sleeve holes; a gating cavity is formed between the moving mold and the fixed mold; a horizontally extending gating channel for connecting the gating cavity is formed between the side of the moving mold and the side of the fixed mold; the injection mechanism includes an injection nozzle; an injection channel penetrating both ends of the injection nozzle is provided inside the nozzle; the discharge end of the injection nozzle is hemispherical; the diameter of the outlet end of the injection channel is smaller than the diameter of the gating channel; the injection nozzle is inclined to the mold machine. The structure is configured such that the central axis of the casting channel does not coincide with the central axis of the injection channel; the discharge end of the injection nozzle can be inserted into the gate of the casting channel and the outer arc surface of the discharge end of the injection nozzle is in contact with the inner wall of the gate of the casting channel; the lifting mechanism includes a lifting seat, a lifting cylinder and two sets of connecting rod balancing assemblies; the lifting cylinder is mounted on the frame and the output end of the lifting cylinder is connected to the middle position of the bottom surface of the lifting seat; the injection mechanism is mounted on the lifting seat; each set of... Each of the aforementioned linkage balancing assemblies includes two two-linkage links and a balance rod; each two-linkage link includes an upper curved arm and a lower curved arm, the first ends of which are hinged to each other via a hinge shaft, the second end of the upper curved arm being hinged to the lifting seat, and the second end of the lower curved arm being hinged to the frame; the two ends of the balance rod are respectively hinged to the hinge shafts of the corresponding two two-linkage links; the four two-linkage links in the two linkage balancing assemblies are evenly distributed in a rectangular shape between the lifting seat and the frame, and the two balance rods are symmetrically arranged front and rear.

[0011] Furthermore, an angle is formed between the central axis of the injection channel and the central axis of the casting channel, and 0° < the angle ≤ 12°.

[0012] Furthermore, an arc surface or inclined surface is provided on the inner wall around the gate of the casting channel to cooperate with the hemispherical discharge end of the injection nozzle.

[0013] Furthermore, the lifting mechanism also includes two sets of guide components; the two sets of guide components correspondingly include two limiting blocks and two guide posts; the two limiting blocks are respectively located between the two balance rods, one limiting block is located between one end of the two balance rods, and the other limiting block is located between the other ends of the two balance rods; a downwardly extending guide hole is opened on the top surface of each limiting block; the upper ends of the two guide posts are respectively connected to the lifting seat, and the lower ends are respectively matched and inserted into the two guide holes.

[0014] Furthermore, a first slot is provided at the first end of each upper curved arm; a second slot is provided at the first end of each lower curved arm; the first end of the lower curved arm is inserted into the first slot; one end of the balance rod is matchedly inserted into the second slot; the hinge shaft passes through the balance rod, both sides of the first slot, and both sides of the second slot.

[0015] Furthermore, a plurality of first support blocks are provided on the frame; a plurality of evenly distributed second support blocks are provided on the bottom surface of the lifting seat; each first support block and a second support block can abut against each other.

[0016] Furthermore, the fixed mold is detachably mounted on the fixed mold base; the moving mold is detachably mounted on the moving mold base.

[0017] Furthermore, the injection mechanism also includes a furnace, a material pot, and an injection drive assembly; the furnace is mounted on the lifting base; the material pot includes a pot body, a sleeve, and a ball valve; the pot body is installed inside the furnace and connected to the lifting base via a connecting frame; the sleeve is installed in the inner cavity of the pot body; the sleeve has a pressing chamber inside, a sleeve inlet hole communicating with the pressing chamber is opened at the bottom of the sleeve, and a sleeve outlet hole communicating with the pressing chamber is opened at the bottom of the side wall of the sleeve; a material pot inlet hole communicating with the sleeve inlet hole is opened at the bottom of the pot body; and a discharge passage is opened inside the pot body. The discharge channel is connected at its lower end to the discharge port of the sleeve, and its upper end extends upward at an angle to the gooseneck discharge port of the material container body. The injection nozzle is installed at the gooseneck discharge port. The diameter of the upper end of the sleeve inlet is larger than the diameter of the other positions, so that the upper end forms an embedded position. The ball valve is fitted into the embedded position and the top surface of the ball valve is lower than the bottom surface of the pressing chamber. The ball valve can be used to block the lower port of the embedded position. The injection drive device includes a pressing cylinder and a pressing hammer. The pressing cylinder is installed on the connecting frame and can drive the pressing hammer to move up and down and insert into the pressing chamber.

[0018] Furthermore, the bottom surface of the embedding position is inclined downwards from the outside to the center on all four sides.

[0019] Furthermore, the bottom surface of the pressing chamber is inclined downwards from the outside to the center.

[0020] The beneficial effects of this utility model are as follows:

[0021] This invention, by setting the central axis of the gating runner and the central axis of the injection runner to be non-coincident, allows the moving base plate and moving mold to be placed and moved horizontally while the injection nozzle remains tilted. This eliminates the need for the moving base plate and moving mold to be tilted, thereby reducing the friction between the sleeve hole and the tie rod of the moving base plate. This prevents lateral wear on the sleeve hole and tie rod, and also reduces the likelihood of misalignment when the moving mold and fixed mold are closed. Furthermore, the lifting mechanism, through the use of two linkage balancing components with balancing tie rods and two two-linkage rods, ensures high consistency in the lifting position of the lifting cylinder when driving the lifting seat, resulting in more stable and accurate lifting of the injection nozzle. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the overall structure of this utility model. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the overall structure of this utility model. Figure 3 ;

[0025] Figure 4 This is a longitudinal cross-sectional view of the present invention;

[0026] Figure 5 This is a partial structural schematic diagram of the present invention;

[0027] Figure 6 yes Figure 5 Longitudinal cross-sectional view;

[0028] Figure 7 yes Figure 6 A schematic diagram showing the separation of the injection nozzle from the gating channel;

[0029] Figure 8 This is a schematic diagram of the lifting mechanism of this utility model. Figure 1 ;

[0030] Figure 9 This is a schematic diagram of the lifting mechanism of this utility model. Figure 2 ;

[0031] Figure 10 The explosion of the lifting mechanism of this utility model Figure 1 ;

[0032] Figure 11 The explosion of the lifting mechanism of this utility model Figure 2 ;

[0033] Figure 12 This is a partial structural schematic diagram of the lifting mechanism of this utility model.

[0034] Figure Labels

[0035] 1. Frame; 101. Tie rod;

[0036] 2. Injection mechanism; 21. Injector nozzle; 22. Injection channel; 23. Furnace; 24. Material pot; 241. Material pot body; 242. Squeegee; 243. Ball valve; 244. Pressing chamber; 245. Squeegee inlet; 246. Squeegee outlet; 247. Material pot inlet; 248. Discharge channel; 249. Embedded position; 25. Connecting frame; 26. Pressing cylinder; 27. Pressing hammer;

[0037] 3. Mold mechanism; 31. Fixed base plate; 32. Fixed mold; 33. Moving mold; 34. Moving base plate; 341. Sleeve hole; 35. Tail plate; 36. Mold opening and closing drive device; 37. Gating cavity; 38. Gating runner; 39. Arc surface;

[0038] 4. Lifting mechanism; 41. Lifting seat; 42. Lifting cylinder; 43. Linkage balance assembly; 431. Two-link; 4311. Upper crank arm; 4312. Lower crank arm; 4313. Hinge shaft; 4314. First slot; 4315. Second slot; 432. Balance rod; 44. Limiting block; 441. Guide hole; 45. Guide column; 44. First support block; 47. Second support block. Detailed Implementation

[0039] The utility model will be further described below with reference to the accompanying drawings and specific embodiments. The following description is merely exemplary and does not limit the scope of protection of the utility model.

[0040] like Figures 1-12 As shown, a horizontal hot chamber die casting machine includes an injection mechanism 2 and a mold mechanism 3 respectively mounted on a frame 1 and cooperating with each other, as well as a lifting mechanism 4 mounted on the frame 1 for driving the injection mechanism 2 to rise and fall.

[0041] like Figures 1-7As shown, the mold mechanism 3 includes a fixed base plate 31, a fixed mold 32, a moving mold 33, a moving base plate 34, and a tail plate 35 arranged sequentially in the horizontal direction, and an opening and closing mold driving device 36 mounted on the tail plate 35 for driving the moving base plate 34 and the moving mold 33 to move horizontally; the fixed mold 32 is mounted on the fixed base plate 31, and the moving mold 33 is mounted on the moving base plate 34; the moving base plate 34 and the tail plate 35 are respectively fitted onto multiple tie rods 101 connecting the frame 1 through multiple sleeve holes 341, that is, the moving base plate 34 and the tail plate 35 are respectively provided with multiple sleeve holes 341 that cooperate with the tie rods 101; a casting cavity 37 is formed between the moving mold 33 and the fixed mold 32; a horizontally extending casting channel 38 for communicating with the casting cavity 37 is formed between the side of the moving mold 33 and the side of the fixed mold 32. In this embodiment, in order to ensure stability, there are four tie rods 101 evenly distributed. In addition, as Figures 1-4 As shown, the above-mentioned horizontally placed structure refers to the fact that the bottom surfaces of the fixed mold base plate 31, fixed mold 32, moving mold base plate 34 and moving mold 33 are parallel to the ground, and the same applies to the central axis of the tie rod 5.

[0042] like Figures 1-7 As shown, the injection mechanism 2 includes an injection nozzle 21; an injection channel 22 extending through both ends of the injection nozzle 21 is provided inside the nozzle 21; the discharge end of the injection nozzle 21 is hemispherical; the diameter of the outlet end of the injection channel 22 is smaller than the diameter of the gating channel 38; the injection nozzle 21 is inclined to the mold mechanism 3 and the central axis of the gating channel 38 does not coincide with the central axis of the injection channel 22; the discharge end of the injection nozzle 21 can be inserted into the gate (i.e., the inlet position) of the gating channel 38 and make the outer arc surface of the discharge end of the injection nozzle 21 fit against the inner wall of the gate of the gating channel 38. Therefore, through the cooperation between the gate of the gating channel 38 and the hemispherical discharge end of the nozzle 21, the moving base plate 34 and the moving mold 33 can be placed and moved horizontally (the bottom surfaces of the moving base plate 34 and the moving mold 33 are parallel to the ground) and the nozzle 21 is kept tilted. The fixed base plate 31 and the fixed mold 32 are also horizontally set. That is, neither the moving base plate 34 nor the fixed base plate 31 needs to be tilted. This avoids the need for the sliding holes 341 of the moving base plate 34 to be tilted to meet the angle of the nozzle 21. This can also reduce the friction between the sliding holes 341 of the moving base plate 34 and the tie rod 101 to a certain extent, and avoid the side wear that is easy to occur between the sliding holes 341 of the moving base plate 34 and the tie rod 101. Because the moving base plate 34 and the tie rod 101 are not easy to wear or deviate from each other, the moving mold 33 and the fixed mold 32 are not easy to misalign and the accuracy of the parting line of the two is guaranteed. Ultimately, the production quality of the product can be guaranteed.

[0043] like Figures 1-3 and Figures 8-12As shown, the lifting mechanism 4 includes a lifting seat 41, a lifting cylinder 42, and two sets of linkage balancing assemblies 43; the lifting cylinder 42 is mounted on the frame 1, and its output end is connected to the middle position of the bottom surface of the lifting seat 41; the injection mechanism 2 is mounted on the lifting seat 41, that is, the injection mechanism 2 is connected to the frame 1 through the lifting mechanism 4; each set of linkage balancing assemblies 43 includes two two-linkage rods 431 and a balance rod 432; each two-linkage rod 431 includes a first end... The upper curved arm 4311 and the lower curved arm 4312 are hinged to each other via hinge shaft 4313. The second end of the upper curved arm 4311 is hinged to the lifting seat 41, and the second end of the lower curved arm 4312 is hinged to the frame 1. The two ends of the balance rod 432 are respectively hinged to the hinge shaft 4313 of the corresponding two two-link 431. The four two-link 431s in the two linkage balance assemblies 43 are evenly distributed in a rectangular shape between the lifting seat 41 and the frame 1, and the two balance rods 432 are symmetrically arranged front and back. Therefore, by setting the two linkage balance assemblies 43, when the lifting cylinder 42 drives the lifting seat 41 to rise and fall, each balance rod 432 can drive the corresponding two two-link 431 to unfold or fold synchronously, thereby improving the consistency of the lifting seat 41 at various positions during lifting and falling. Specifically, since each balance lever 432 causes the two connected links 431 to perform corresponding actions synchronously, and the four links 431 are evenly distributed in a rectangular shape on the bottom surface of the lifting seat 41, the balance lever 432 can balance the links 431 against each other during the lifting process of the lifting seat 41, allowing the links 431 to expand or fold synchronously. In other words, the two sets of linkage balance components 43 can limit the movement of the two sides of the lifting seat 41, thus improving the consistency of the lifting seat 41 at various positions during lifting and lowering, resulting in good stability.

[0044] In summary, by setting the central axis of the gating channel 38 and the central axis of the injection channel 22 to be non-coincident, this utility model allows the moving base plate 34 and the moving mold 33 to be placed and moved horizontally while the injection nozzle 21 remains tilted. That is, the moving base plate 34 and the moving mold 33 do not need to be tilted, thereby reducing the friction between the sleeve hole 341 of the moving base plate 34 and the tie rod 101. This avoids side wear between the sleeve hole 341 and the tie rod 101 and makes it less likely for misalignment to occur when the moving mold 33 and the fixed mold 32 are closed. Furthermore, the lifting mechanism 4, by incorporating two connecting rod balancing assemblies 43, each with a balancing tie rod 432 and two double-link 431, ensures high consistency in the positions of the lifting cylinder 42 when driving the lifting seat 41 to rise and fall, thus making the lifting of the injection nozzle 21 of the injection mechanism 2 more stable and accurate.

[0045] like Figure 6 and Figure 7As shown, in this embodiment, an angle A is formed between the central axis of the injection channel 22 and the central axis of the casting channel 38, where 0° < angle A ≤ 12°. That is, the injection nozzle 21 is tilted relative to the casting channel 38 at a certain angle. This design greatly facilitates operators in adjusting the angle of the injection nozzle 21 according to actual needs, ensuring the effective use of both the injection nozzle 21 and the casting channel 38. Since the above angle range was obtained by the R&D personnel after multiple rounds of testing, adopting this angle ensures the desired performance.

[0046] like Figures 5-7 As shown, in this embodiment, an arc surface 39 or a slope (not shown) is provided on the inner wall around the gate of the gating channel 38 to cooperate with the hemispherical discharge end of the nozzle 21. This ensures the fit between the nozzle 21 and the gate of the gating channel 38, thus guaranteeing the effective use of the nozzle 21 and the mold mechanism 3. In this embodiment, an arc surface 14 is provided on the inner wall around the gate of the gating channel 38. Specifically, after the discharge end of the nozzle 21 is inserted into the gating channel 38, the front end of the discharge end of the nozzle 21 passes through the gate and extends a certain distance towards the outlet of the gating channel 38. This ensures normal injection of the nozzle 21 and avoids obstruction by the arc surface 39 or slope at the gate during injection, which could lead to uneven metal flow.

[0047] like Figures 8-12 As shown, the lifting mechanism 4 also includes two sets of guide components. Each set of guide components includes two limiting blocks 44 and two guide posts 45, meaning each set of guide components includes one limiting block 44 and one guide post 45. The two limiting blocks 44 are located between two balance rods 432, with one limiting block 44 located between one end of the two balance rods 432 and the other limiting block 44 located between the other ends of the two balance rods 432. A downwardly extending guide hole 441 is provided on the top surface of each limiting block 44. The upper ends of the two guide posts 45 are connected to the lifting seat 41, and their lower ends are respectively inserted into the two guide holes 441. Therefore, by using the guide hole 441 on the limit block 44 to limit the guide column 45, the lifting stability of the lifting seat 41 can be guaranteed. Moreover, since there are two guide components to limit the lifting seat 41, and with the cooperation of two connecting rod balance components 43, the lifting seat 41 can maintain synchronization in all positions during the lifting process, thereby making the lifting of the nozzle 21 more stable and accurate.

[0048] like Figures 8-12As shown, the connection relationship between the two-link 431 and the balance rod 432 is as follows: a first slot 4314 is provided at the first end of each upper crank arm 4311; a second slot 4315 is provided at the first end of each lower crank arm 4312; the first end of the lower crank arm 4312 is inserted into the first slot 4314; one end of the balance rod 432 is matchedly inserted into the second slot 4315; the hinge shaft 4313 passes through the balance rod 432, the two sides of the first slot 4314 and the two sides of the second slot 4315 respectively, so that one upper crank arm 4311, one lower crank arm 4312 and one end of the balance rod 432 are hinged together by a hinge shaft 4313. Therefore, by inserting the two ends of the balance rod 432 into the second slots 4315 of the two connecting rods 431 respectively and connecting them with the hinge shaft 4313, when the two connecting rods 431 pull the balance rod 432 using the hinge shaft 4313, the two hinge shafts 4313 will be forced to move simultaneously, thereby causing the two connecting rods 431 to move simultaneously.

[0049] like Figures 8-12 As shown, specifically, the second end of each upper curved arm 4311 is hinged to the lifting seat 41 via a pivot (not shown in the figure); the second end of each lower curved arm 4312 is hinged to the frame 1 via a pivot (not shown in the figure). Since the structure of using a pivot to hinge to other objects is existing technology, it will not be described in detail here.

[0050] like Figures 8-12 As shown, multiple first support blocks 46 are provided on the frame 1; multiple evenly distributed second support blocks 47 are provided on the bottom surface of the lifting seat 41; each first support block 46 and each second support block 47 can abut against each other. Furthermore, the multiple first support blocks 46 are evenly distributed on the frame 1; the multiple second support blocks 47 are evenly distributed on the lifting seat 41. This arrangement allows the lifting seat 41 to be prevented from descending further when it reaches a preset position by the abutment between the first support blocks 46 and the second support blocks 47, thus avoiding damage to the connecting rod 431, etc., due to the lifting seat 41 being too low.

[0051] In this embodiment, the fixed mold 32 is detachably mounted on the fixed base plate 31; the moving mold 33 is detachably mounted on the moving base plate 34. Therefore, the above arrangement facilitates the disassembly and replacement of the fixed mold 32 and the moving mold 33, and also benefits inspection and maintenance.

[0052] In this embodiment, the mold opening and closing drive device 36 includes a mold opening and closing cylinder (not shown in the figure) mounted on the axis of the tail plate 35 and two toggle assemblies (not shown in the figure) respectively connected to the tail plate 35 and the moving base plate 34; the output shaft of the mold opening and closing cylinder can be connected to the two toggle assemblies through a connecting plate (not shown in the figure). The mold opening and closing cylinder can drive the upper base plate 34 and the upper mold 33 to move up and down through the two toggle assemblies. However, since the above configuration is prior art, its structure and principle will not be described in detail here.

[0053] The injection mechanism 2 also includes a furnace 23, a material pot 24, and an injection drive assembly.

[0054] like Figures 1-7 As shown, the furnace 23 is mounted on the lifting base 41; the material pot 24 includes a material pot body 241, a sleeve 242, and a ball valve 243; the material pot body 241 is installed inside the furnace 23 and is connected to the lifting base 41 via a connecting frame 25; the sleeve 242 is installed in the inner cavity (not shown in the figure) of the material pot body 241; the inside of the sleeve 242 is provided with a pressing chamber 244, and a sleeve feed hole 245 communicating with the pressing chamber 244 is opened at the bottom of the sleeve 242. A sleeve discharge hole 246 communicating with the pressing chamber 244 is provided near the bottom of the side wall; a pot inlet hole 247 communicating with the sleeve inlet hole 245 is provided at the bottom of the pot body 241; a discharge channel 248 is provided inside the pot body 241; the lower end of the discharge channel 248 is connected to the sleeve discharge hole 246, and the upper end of the discharge channel 248 extends upward at an angle to the gooseneck discharge port of the pot body 241; the injection nozzle 21 is installed at the gooseneck discharge port (not shown in the figure). The diameter of the upper end of the sleeve inlet hole 245 is larger than the diameter of the other positions, so that the upper end forms an embedded position 249; a ball valve 243 is matchedly embedded in the embedded position 249 and the top surface of the ball valve 243 is lower than the bottom surface of the pressing chamber 244. The ball valve 243 can be used to block the lower port of the embedded position 249. The injection drive device includes a pressure cylinder 26 and a pressure hammer 27. The pressure cylinder 26 is mounted on the connecting frame 25 and can drive the pressure hammer 27 to move up and down and be inserted into the pressure chamber 244. Therefore, by setting the ball valve 243 to be fully embedded in the embedding position 249, this invention prevents the pressure hammer 27 from pressing the ball valve 243 when moving downward at high speed. Furthermore, it also prevents the flowing molten metal driven by the downward movement of the pressure hammer 27 from pushing the ball valve 243, thus making the ball valve 243 less prone to loosening and preventing molten metal from overflowing into the feed port 245 of the ejector sleeve.

[0055] In other embodiments, the lifting seat 41 may also include a movable plate (not shown) located at the upper end, on which the injection mechanism 2 and the furnace 23 are mounted. Simultaneously, a horizontal drive mechanism (not shown) may be provided between the frame 1 and the movable plate to drive the movable plate horizontally, so that it can cooperate with the lifting mechanism 4 to drive the injection nozzle 21 to move horizontally and vertically. Furthermore, the position of the injection nozzle 21 can be adjusted to cooperate with the moving mold 33 and the fixed mold 32. However, since the above-mentioned horizontal drive mechanism is existing technology, it will not be described in detail here.

[0056] like Figure 6 As shown, in this embodiment, the bottom surface of the insert 249 is inclined downwards from the outside to the center. Therefore, since the bottom surface of the insert 249 is inclined and has a guiding function, the ball valve 243 can quickly block the feed port when it falls.

[0057] like Figure 6 As shown, in this embodiment, the bottom surface of the pressing chamber 244 is inclined downwards from the outside to the center. Similarly, since the bottom surface of the pressing chamber 244 is inclined and has a guiding function, the ball valve 243 can fall more accurately into the embedding position 249 of the feed port 245 when it falls.

[0058] The following describes the specific working principle of this utility model in order to help you understand it:

[0059] First, the mold opening and closing drive device 36 drives the moving mold 33 to move horizontally towards the fixed mold 32 and close the mold. Next, the injection mechanism 2 moves to a preset position via the lifting mechanism 4, etc., at which point the injection nozzle 21 is inserted into the gating channel 38. Next, the pressure cylinder 26 drives the pressure hammer 27 downwards, thereby pushing the molten metal in the pressure chamber 244 through the injection nozzle 21 into the gating channel 38, and then into the gating cavity 37. Next, after the pouring is completed, the mold opening and closing drive device 36 drives the moving mold 33 and the fixed mold 32 to close. The components are opened to each other; next step, remove the workpiece; next step, reset each component; and when the pressure cylinder 26 drives the pressure hammer 27 to reset upward, a negative pressure is formed in the pressure chamber 244, so that the molten metal in the furnace 23 will pass through the pot inlet 247 and the sleeve inlet 245 in sequence and push open the ball valve 243 to enter the pressure chamber 244. When the pressure hammer 27 moves into place, the ball valve 243 automatically falls into the embedded position 249 by its own gravity, thereby sealing the sleeve inlet 245 again and preventing the molten metal from overflowing.

[0060] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A horizontal hot chamber die-casting machine, characterized in that: It includes an injection mechanism and a mold mechanism respectively mounted on a frame and cooperating with each other, as well as a lifting mechanism mounted on the frame for driving the injection mechanism to rise and fall; The mold mechanism includes a fixed base plate, a fixed mold, a moving mold, a moving base plate, and a tail plate arranged sequentially in the horizontal direction, as well as an opening and closing mold driving device mounted on the tail plate and used to drive the moving base plate and the moving mold to move horizontally. The fixed mold is mounted on the fixed base plate, and the moving mold is mounted on the moving base plate; the moving base plate and the tail plate are respectively sleeved on multiple tie rods connecting the frame through multiple sleeve holes; a casting cavity is formed between the moving mold and the fixed mold; a horizontally extending casting channel for communicating with the casting cavity is formed between the side of the moving mold and the side of the fixed mold. The injection mechanism includes an injection nozzle; the injection nozzle has an injection channel extending through both ends; the discharge end of the injection nozzle is hemispherical; the diameter of the outlet end of the injection channel is smaller than the diameter of the gating channel; the injection nozzle is inclined to the mold mechanism and the central axis of the gating channel does not coincide with the central axis of the injection channel; the discharge end of the injection nozzle can be inserted into the gate of the gating channel and the outer arc surface of the discharge end of the injection nozzle is in contact with the inner wall of the gate of the gating channel. The lifting mechanism includes a lifting seat, a lifting cylinder, and two sets of linkage balancing assemblies. The lifting cylinder is mounted on the frame, and its output end is connected to the center of the bottom surface of the lifting seat. The injection mechanism is mounted on the lifting seat. Each set of linkage balancing assemblies includes two two-bar linkages and a balance rod. Each two-bar linkage includes an upper curved arm and a lower curved arm, the first ends of which are hinged to each other via a hinge shaft. The second end of the upper curved arm is hinged to the lifting seat, and the second end of the lower curved arm is hinged to the frame. The two ends of the balance rod are respectively hinged to the hinge shafts of the corresponding two two-bar linkages. The four two-bar linkages in the two linkage balancing assemblies are evenly distributed in a rectangular shape between the lifting seat and the frame, and the two balance rods are symmetrically arranged front and back.

2. The horizontal hot chamber die-casting machine according to claim 1, characterized in that: The central axis of the injection channel and the central axis of the casting channel form an angle, and 0° < the angle ≤ 12°.

3. The horizontal hot chamber die-casting machine according to claim 1, characterized in that: The inner wall around the gate of the casting channel is provided with an arc surface or inclined surface for cooperating with the hemispherical discharge end of the injection nozzle.

4. The horizontal hot chamber die-casting machine according to claim 1, characterized in that: The lifting mechanism also includes two sets of guide components; The two sets of guide components each include two limiting blocks and two guide posts; the two limiting blocks are respectively located between the two balance rods, one limiting block is located between one end of the two balance rods, and the other limiting block is located between the other ends of the two balance rods; a downwardly extending guide hole is opened on the top surface of each limiting block; the upper ends of the two guide posts are respectively connected to the lifting seat, and the lower ends are respectively matched and inserted into the two guide holes.

5. The horizontal hot chamber die-casting machine according to claim 1, characterized in that: A first slot is provided at the first end of each upper curved arm; a second slot is provided at the first end of each lower curved arm; the first end of the lower curved arm is inserted into the first slot; one end of the balance rod is inserted into the second slot; the hinge shaft passes through the balance rod, both sides of the first slot, and both sides of the second slot.

6. The horizontal hot chamber die-casting machine according to claim 1, characterized in that: Multiple first support blocks are provided on the frame; multiple evenly distributed second support blocks are provided on the bottom surface of the lifting seat; each first support block and one second support block can abut against each other.

7. The horizontal hot chamber die-casting machine according to claim 1, characterized in that: The fixed mold is detachably mounted on the fixed mold base; the moving mold is detachably mounted on the moving mold base.

8. The horizontal hot chamber die-casting machine according to claim 1, characterized in that: The injection mechanism also includes a furnace, a material pot, and an injection drive assembly; The furnace is mounted on the lifting platform; The material container includes a container body, a sleeve, and a ball valve; the container body is installed inside the furnace and connected to the lifting seat via a connecting frame; the sleeve is installed in the inner cavity of the container body; the sleeve has a pressing chamber inside, a sleeve inlet hole communicating with the pressing chamber is opened at the bottom of the sleeve, and a sleeve outlet hole communicating with the pressing chamber is opened at the bottom of the side wall of the sleeve; a container inlet hole communicating with the sleeve inlet hole is opened at the bottom of the container body; a discharge channel is opened inside the container body; the lower end of the discharge channel communicates with the sleeve outlet hole, and the upper end of the discharge channel extends upward at an angle to the gooseneck outlet of the container body; the injection nozzle is installed at the gooseneck outlet. The diameter of the upper end of the feed port of the sleeve is larger than the diameter of the rest of the position, so that the upper end forms an embedded position; the ball valve is fitted into the embedded position and the top surface of the ball valve is lower than the bottom surface of the pressure chamber, and the ball valve can be used to block the lower port of the embedded position; The material injection drive assembly includes a material pressing cylinder and a material pressing hammer; the material pressing cylinder is mounted on the connecting frame, and the material pressing cylinder can drive the material pressing hammer to move up and down and insert into the material pressing chamber.

9. The horizontal hot chamber die-casting machine according to claim 8, characterized in that: The bottom surface of the embedding position is sloped downwards from the outside to the center.

10. The horizontal hot chamber die-casting machine according to claim 8, characterized in that: The bottom surface of the pressing chamber is sloped downwards from the outside to the center.

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