Button mechanism and hot chamber die casting machine

Abstract

This utility model relates to the field of die casting technology, and discloses a nozzle clamping mechanism and a hot chamber die casting machine. The nozzle clamping mechanism includes: multiple guide shafts vertically arranged on a mold mounting plate; a stand slidably mounted on the guide shafts; a nozzle clamping cylinder with its two ends connected to the stand and the mold mounting plate respectively; and a material reservoir mounted on the stand, with the nozzle facing the mold's feed inlet. This nozzle clamping mechanism, applied to a hot chamber die casting machine, can control the nozzle to reciprocate along the axis of the mold feed inlet, achieving precise nozzle clamping action and ensuring that the nozzle center is aligned with the mold feed inlet.

Description

Technical Field

[0001] This utility model relates to the field of die casting technology, specifically to a snap-fit ​​mechanism and a hot chamber die casting machine. Background Technology

[0002] In hot chamber die casting machines, the nozzle clamping mechanism is used to press and seal the nozzle outlet of the injection system against the mold inlet to ensure that molten metal enters the mold cavity stably and continuously during injection. In existing technology, a common nozzle clamping method involves rotating the entire injection system around a fixed axis to achieve contact between the nozzle and the mold inlet. This fixed axis is usually perpendicular to the mold inlet axis, and there is a height difference between the two in space. During the clamping process, the nozzle oscillates along an arc trajectory, making it difficult to guarantee the coaxial alignment accuracy between the nozzle center and the mold inlet.

[0003] To achieve precise alignment, the nozzle position of the injection system typically requires manual adjustment to match the mold's inlet position. This method is not only cumbersome and time-consuming, but also highly dependent on the operator's experience, impacting production efficiency. Furthermore, due to the relative friction between the nozzle and the mold's inlet during the nozzle-fitting process, the nozzle tip is prone to wear, which can lead to poor sealing or even material leakage after prolonged use.

[0004] In addition, the existing hot chamber die casting machines mostly adopt the structure of directly mounting the injection cylinder on the material pot. When repairing or replacing vulnerable parts such as the material pot, the entire injection system needs to be disassembled and reassembled, resulting in a large amount of maintenance work, low disassembly and assembly efficiency, and is not conducive to the rapid maintenance of the equipment. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a nozzle clamping mechanism and a hot chamber die-casting machine having the same. The nozzle clamping mechanism can control the nozzle to reciprocate along the axis of the mold feed port, thereby achieving precise nozzle clamping action and ensuring that the nozzle center is aligned with the mold feed port.

[0006] According to one embodiment of the present invention, a nozzle-clamping mechanism is provided for pressing the nozzle of a material container in a hot chamber die-casting machine against the feed inlet of a mold. The mechanism includes: multiple guide shafts vertically arranged on a mold mounting plate; a stand slidably mounted on the guide shafts; the stand includes a top plate and two side arms located below the top plate, with guide shaft holes on the two side arms through which the guide shafts pass; nozzle-clamping cylinder holes on the two side arms; a nozzle-clamping cylinder located in the nozzle-clamping cylinder holes, with its two ends respectively connected to the stand and the mold mounting plate; and a material container located on the stand, with the nozzle directly opposite the feed inlet of the mold.

[0007] In one embodiment, the cylinder body of the snap-fit ​​cylinder is disposed in the snap-fit ​​cylinder hole, and the telescopic end of the snap-fit ​​cylinder is connected to the mold mounting plate; or the telescopic end of the snap-fit ​​cylinder is disposed in the snap-fit ​​cylinder hole, and the cylinder body of the snap-fit ​​cylinder is connected to the mold mounting plate.

[0008] In one embodiment, each of the two side arms is provided with a latch cylinder hole and a guide shaft hole; the two guide shaft holes are symmetrical about the center of the stand; the two latch cylinder holes are symmetrical about the center of the stand.

[0009] According to one embodiment of the present invention, a hot chamber die casting machine is provided, comprising: a frame on which a mold mounting plate is provided, wherein the mold mounting plate has an injection hole in the middle; a mold disposed on one side of the mold mounting plate, wherein the inlet is opposite to the injection hole; a clamping mechanism as described above; and an injection cylinder fixed on the stand, wherein the telescopic end is connected to an injection rod inserted into the material pot.

[0010] In one embodiment, the top plate of the stand is provided with an injection hole, the cylinder body of the injection cylinder is fixed on the top plate, the telescopic end of the injection cylinder passes through the injection hole and is connected to the injection rod, and the material pot is located between the two side arms of the stand.

[0011] In one embodiment, limiting bosses are formed on the opposite sides of the two side arms, and limiting portions extending toward the middle are formed at the bottom of the two limiting bosses. Limiting blocks with their bottom surfaces abutting the top surfaces of the limiting portions are formed on both sides of the material pot. A pressure plate fixed on the limiting boss is provided at the upper end of the material pot, and a baffle fixed on the limiting boss is provided on the side of the material pot away from the mold mounting plate.

[0012] As one embodiment, the top surface of the limiting boss is provided with a first bolt hole and the side surface is provided with a second bolt hole. The pressure plate is bolted to the first bolt hole and the baffle is bolted to the second bolt hole.

[0013] As one implementation, limiting holes are formed on the opposite sides of the two side arms, and one end of the pressure plate passes through the limiting holes.

[0014] As one embodiment, the top of the container is provided with a positioning hole, and the lower end face of the pressure plate is formed with a positioning protrusion located in the positioning hole.

[0015] Based on the above description and practical application, it can be seen that the nozzle clamping mechanism of this utility model utilizes the extension and retraction of the nozzle clamping cylinder to move the material pot on the stand away from or closer to the mold, thereby moving the nozzle away from or tightly against the mold inlet, achieving precise nozzle clamping action and ensuring that the nozzle center is aligned with the mold inlet. Furthermore, during this process, the nozzle always moves perpendicular to the mold mounting plate, thus preventing relative friction between the nozzle and the mold inlet and avoiding frictional damage to the nozzle tip.

[0016] In the hot chamber die casting machine of this utility model, the material pot and the injection cylinder in the injection system are independently installed on the stand. When the material pot and other vulnerable parts are to be repaired or replaced, there is no need to disassemble the entire injection system. Only the pressure plate and the baffle need to be removed to remove the material pot from the stand. The injection cylinder is always fixed on the stand, which improves the efficiency of repair and replacement and is conducive to the rapid maintenance of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the buckle mechanism involved in one embodiment of the present utility model.

[0018] Figure 2 This is an exploded structural diagram of the latching mechanism involved in one embodiment of the present utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the buckle mechanism's central support in one embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the material container in the spout mechanism involved in one embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of a hot chamber die-casting machine involved in one embodiment of the present invention.

[0022] The attached figures are labeled as follows: 1. Frame; 11. Mold mounting plate; 12. Injection hole; 2. Mold; 21. Feed port; 3. Guide shaft; 4. Stand; 41. Top plate; 42. Side arm; 43. Injection hole; 44. Guide shaft hole; 45. Nozzle cylinder hole; 46. Limiting boss; 47. Limiting part; 48. First bolt hole; 49. Second bolt hole; 421. Limiting hole; 5. Nozzle cylinder; 6. Material pot; 61. Injection nozzle; 62. Limiting block; 63. Positioning hole; 7. Injection rod; 8. Injection cylinder; 9. Pressure plate; 10. Baffle. Detailed Implementation

[0023] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0024] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. It should be noted that in this disclosure, the terms "comprising," "configured with," and "set in" are used to indicate an open-ended inclusion, meaning that additional elements / components / etc. may exist besides those listed; the terms "first," "second," etc., are used only as labels and are not intended to limit the number or order of objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship 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.

[0025] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between 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.

[0026] like Figures 1 to 5 As shown, in this embodiment, a nozzle clamping mechanism and a hot chamber die casting machine having the same are disclosed. The nozzle clamping mechanism is part of the hot chamber die casting machine and is used to press the nozzle 61 of the material pot 6 in the hot chamber die casting machine against the feed port 21 of the mold 2.

[0027] The hot chamber die casting machine mainly includes a frame 1, a mold 2, and an injection mechanism. The nozzle mechanism mainly includes multiple guide shafts 3, a stand 4, a nozzle cylinder 5, and a material reservoir 6. The frame 1 is the main support structure of the entire machine, fixedly installed on the ground, used to support and connect the various components of the hot chamber die casting machine. A mold mounting plate 11 is fixedly installed on the frame 1, with an injection hole 12 in the center of the mold mounting plate 11, the axis of which extends along the Z-axis. The mold 2 is installed on the front side of the mold mounting plate 11, with the inlet 21 of the mold 2 directly opposite the injection hole 12, so that the nozzle 61 connects with the inlet 21 via the injection hole 12.

[0028] Multiple guide shafts 3 are vertically fixed on the mold mounting plate 11 along the Z-axis direction. The Z-axis is parallel to the axis of the feed port 21 and perpendicular to the mold mounting plate 11. The axial direction of the guide shafts 3 is parallel to the axial direction of the injection hole 12. The stand 4 is slidably sleeved on the guide shafts 3 and can move smoothly back and forth along the Z-axis direction under the guidance of the guide shafts 3. The two ends of the nozzle cylinder 5 are respectively connected to the stand 4 and the mold mounting plate 11. By extending and retracting the nozzle cylinder 5, the stand 4 can be driven to move along the guide shaft 3 in the Z-axis direction. The material pot 6 is set on the stand 4, and its nozzle 61 is directly opposite the feed port 21 of the mold 2. When the nozzle cylinder 5 drives the stand 4 to move back and forth, it can make the nozzle 61 press against the feed port 21 or move away from the feed port 21, thereby realizing the nozzle locking and opening action.

[0029] The nozzle clamping mechanism of this invention utilizes the extension and retraction of the nozzle clamping cylinder 5 to move the material pot 6 on the stand 4 away from or closer to the mold 2, thereby moving the nozzle 61 away from or tightly against the feed inlet 21 of the mold 2, achieving precise nozzle clamping action and ensuring that the center of the nozzle 61 is aligned with the feed inlet 21. Furthermore, during this process, the nozzle 61 always moves perpendicular to the mold mounting plate 11, thus preventing relative friction between the nozzle 61 and the feed inlet 21 and avoiding frictional damage to the tip of the nozzle 61.

[0030] In this embodiment, the support 4 includes a top plate 41 and two side arms 42 located below the top plate 41. The two side arms 42 are arranged opposite to each other, and each side arm 42 has a guide shaft hole 44. A guide shaft 3 passes through the guide shaft hole 44, and the support 4 is sleeved on the guide shaft 3 through the guide shaft hole 44, allowing it to slide smoothly along the guide shaft 3 in the Z-axis direction. Each side arm 42 also has a latching cylinder hole 45 for mounting a latching cylinder 5. The cylinder body of the latching cylinder 5 is installed in the latching cylinder hole 45, and the telescopic end of the latching cylinder 5 is connected to the mold mounting plate 11. Each side arm 42 has one latching cylinder hole 45 and one guide shaft hole 44. The latching cylinder holes 45 on the two side arms 42 are symmetrically arranged with respect to the center of the support 4, and the guide shaft holes 44 on the two side arms 42 are also symmetrically arranged. The symmetrically arranged guide shafts 3 and latching cylinders 5 ensure balanced force distribution on the stand 4 as it moves along the Z-axis, resulting in smooth and reliable latching action. This prevents the stand 4 from tilting and guarantees the alignment accuracy between the nozzle 61 and the feed inlet 21. In other embodiments, the telescopic end of the latching cylinder 5 can be installed in the latching cylinder hole 45, with the cylinder body of the latching cylinder 5 connected to the mold mounting plate 11. This also drives the stand 4 to reciprocate along the guide shafts 3.

[0031] The injection mechanism in the hot chamber die casting machine includes an injection cylinder 8 and an injection rod 7. The injection cylinder 8 is fixed on the stand 4, and its telescopic end is connected to the injection rod 7, which is inserted into the material pot 6. During the injection operation, the telescopic end of the nozzle-closing cylinder 5 retracts, driving the stand 4 and the material pot 6 on it to move along the Z-axis towards the mold mounting plate 11. The nozzle 61 passes through the injection hole 12 and then tightly engages with the feed port 21, completing the nozzle-closing action. The injection cylinder 8 then drives the injection rod 7 to move downward in the material pot 6, injecting the molten metal in the material pot 6 into the mold cavity through the nozzle 61 and the feed port 21, completing the die casting. After the die casting is completed, the telescopic end of the nozzle-closing cylinder 5 extends, driving the stand 4 and the material pot 6 away from the mold mounting plate 11 along the Z-axis. The nozzle 61 disengages from the feed port 21, completing the nozzle-opening action.

[0032] In this embodiment, an injection hole 43 is provided on the top plate 41. The cylinder body of the injection cylinder 8 is fixed above the top plate 41. The telescopic end of the injection cylinder 8 passes downward through the injection hole 43 and is connected to the top of the injection rod 7. The molten metal pot 6 is vertically arranged between the two side arms 42, and the nozzle 61 faces the mold mounting plate 11. During injection, the telescopic end of the injection cylinder 8 extends downward, and the injection rod 7 moves downward inside the molten metal pot 6, forcing the molten metal in the molten metal pot 6 out through the nozzle 61.

[0033] In this embodiment, limiting bosses 46 are formed on the inner surfaces of the two opposing side arms 42, and the upper end of the pot 6 is engaged with the two limiting bosses 46. A limiting portion 47 extending inwards to the center is formed at the bottom of the two limiting bosses 46, and the top surface of the limiting portion 47 forms a support surface. Limiting blocks 62 are formed on both sides of the pot 6, and the bottom surface of the limiting block 62 abuts against the top surface of the limiting portion 47. Through the contact and engagement between the limiting block 62 and the limiting portion 47, vertical support is provided for the pot 6 to prevent it from falling downwards. A pressure plate 9 is provided at the upper end of the pot 6, fixed to the limiting bosses 46, to press the upper end of the pot 6 downwards and prevent it from coming off upwards. A baffle 10 is provided on the side of the pot 6 away from the mold mounting plate 11, fixed to the limiting bosses 46, to prevent the pot 6 from moving away from the mold mounting plate 11 and coming off. Through the coordinated action of the pressure plate 9 and the baffle 10, the material pot 6 is detachably fixed to the stand 4. When it is necessary to disassemble or replace the material pot 6, only the pressure plate 9 and the baffle 10 need to be removed to take the material pot 6 out from between the two side arms 42, while the injection cylinder 8 and the injection rod 7 do not need to be moved and remain fixed on the top plate 41 of the stand 4. This simplifies the disassembly and assembly of the material pot 6 and facilitates rapid maintenance of the equipment.

[0034] In this embodiment, the top surface of the limiting boss 46 is provided with a first bolt hole 48, and the pressure plate 9 is bolted to the first bolt hole 48 to press and fix the upper end of the material pot 6 onto the limiting boss 46; the side of the limiting boss 46 is provided with a second bolt hole 49, and the baffle 10 is bolted to the second bolt hole 49 to block the material pot 6 from the side. This limiting and fixing structure is easy to assemble and disassemble, making it convenient for operators to quickly complete the replacement of the material pot 6.

[0035] Furthermore, in this embodiment, limiting holes 421 extending along the X-axis are formed on the inner surfaces of the two opposing side arms 42, and one end of the pressure plate 9 passes through the limiting holes 421. The cooperation between the limiting holes 421 and the pressure plate 9 can limit the displacement of the pressure plate 9 along the Y-axis. When the injection cylinder 8 drives the injection rod 7 to reciprocate along the Y-axis, it prevents the material pot 6 from moving relative to the Y-axis due to the force of the injection rod 7, thereby improving the reliability of the material pot 6 fixation and ensuring the stability of the position of the material pot 6 during the injection operation.

[0036] Furthermore, in this embodiment, the top of the material pot 6 is provided with a positioning hole 63, and the lower end face of the pressure plate 9 is formed with a positioning protrusion. When installing the material pot 6, the positioning protrusion is inserted into the positioning hole 63 to achieve rapid and accurate positioning between the material pot 6 and the pressure plate 9. Through the interlocking cooperation of the positioning hole 63 and the positioning protrusion, on the one hand, the position of the material pot 6 can be quickly determined during installation, improving assembly accuracy; on the other hand, it can further limit the relative displacement between the material pot 6 and the stand 4 in the X-axis and Z-axis directions, further ensuring the alignment accuracy between the nozzle 61 and the feed inlet 21, thereby ensuring the die-casting quality.

[0037] In the hot chamber die casting machine of this utility model, the material pot 6 and the injection cylinder 8 in the injection system are independently installed on the stand 4. When the easily damaged parts such as the material pot 6 are to be repaired or replaced, there is no need to disassemble the entire injection system. Only the pressure plate 9 and the baffle 10 need to be removed to remove the material pot 6 from the stand 4. The injection cylinder 8 is always fixed on the stand 4, which improves the efficiency of repair and replacement and is conducive to the rapid maintenance of the equipment.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A nozzle clamping mechanism for pressing the nozzle of a material pot in a hot chamber die-casting machine against the feed inlet of a mold, characterized in that, include: Multiple guide shafts are vertically mounted on the mold mounting plate; The support is slidably mounted on the guide shaft; the support includes a top plate and two side arms located below the top plate, the two side arms are provided with guide shaft holes, and the guide shaft passes through the guide shaft holes; the two side arms are provided with latch cylinder holes; A locking nozzle cylinder is installed in the locking nozzle cylinder hole, with its two ends connected to the stand and the mold mounting plate, respectively. The material container is located on the stand, with the nozzle facing the mold's inlet.

2. The latching mechanism as described in claim 1, characterized in that, The cylinder body of the snap-fit ​​cylinder is located in the snap-fit ​​cylinder hole, and the telescopic end of the snap-fit ​​cylinder is connected to the mold mounting plate. or The telescopic end of the snap-fit ​​cylinder is located in the snap-fit ​​cylinder hole, and the cylinder body of the snap-fit ​​cylinder is connected to the mold mounting plate.

3. The latching mechanism as described in claim 2, characterized in that, Each of the two side arms is provided with a latch cylinder hole and a guide shaft hole; The two guide shaft holes are symmetrical about the center of the support. The two cylinder holes are symmetrical about the center of the support.

4. A hot chamber die-casting machine, characterized in that, include: A frame, on which a mold mounting plate is provided, and an injection hole is provided in the middle of the mold mounting plate; The mold is located on one side of the mold mounting plate, with the feed inlet opposite to the injection hole; The latching mechanism as described in any one of claims 1 to 3; The injection cylinder is fixed on the stand, and its telescopic end is connected to an injection rod that is inserted into the material pot.

5. The hot chamber die-casting machine as described in claim 4, characterized in that, The top plate of the stand is provided with an injection hole, the cylinder body of the injection cylinder is fixed on the top plate, the telescopic end of the injection cylinder passes through the injection hole and is connected to the injection rod, and the material pot is located between the two side arms of the stand.

6. The hot chamber die-casting machine as described in claim 5, characterized in that, Limiting bosses are formed on the opposite sides of the two side arms. Limiting portions extending toward the middle are formed at the bottom of the two limiting bosses. Limiting blocks with their bottom surfaces abutting the top surfaces of the limiting portions are formed on both sides of the material pot. A pressure plate fixed on the limiting boss is provided at the upper end of the material pot. A baffle fixed on the limiting boss is provided on the side of the material pot away from the mold mounting plate.

7. The hot chamber die-casting machine as described in claim 6, characterized in that, The top surface of the limiting boss is provided with a first bolt hole and the side surface is provided with a second bolt hole. The pressure plate is bolted to the first bolt hole and the baffle is bolted to the second bolt hole.

8. The hot chamber die-casting machine as described in claim 7, characterized in that, Limiting holes are formed on the opposite sides of the two side arms, and one end of the pressure plate passes through the limiting holes.

9. The hot chamber die-casting machine as described in claim 7, characterized in that, The top of the container is provided with a positioning hole, and the lower end face of the pressure plate is formed with a positioning protrusion located in the positioning hole.

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