Alumina crucible mold apparatus

Abstract

The utility model discloses an alumina crucible mould device relates to alumina crucible technical field, including the locating seat, the upper surface of locating seat is opened with the mounting groove, the inner wall fixed connection of mounting groove has lower mould, the upper of lower mould is provided with upper mould, the side of upper mould is provided with jacking subassembly, the top fixed connection of upper mould has the hydraulic pressure rod, the outer wall of hydraulic pressure rod is fixedly connected in the top of locating seat through the mounting bracket. The utility model discloses through setting up the sliding slot on the lifting rod and cooperating the sliding connection of the lifting plug rod, has realized " the action time sequence control of first separating mould, after ejecting crucible " When the upper mould goes up through the hydraulic pressure rod, the lifting plug rod first slides in the sliding slot, ensures that the upper and lower mould completely separates again and then drives the lifting rod to eject the crucible, avoids the mould collision or the crucible tearing problem that traditional mould led to because of the demoulding sequence confusion, will the yield of crucible from the prior art's 85% to 98% or more.

Description

Technical Field

[0001] This utility model relates to the field of alumina crucible technology, and specifically to an alumina crucible mold device. Background Technology

[0002] Currently, traditional alumina crucible molds generally adopt a split structure with upper and lower molds, and the demolding process usually involves directly ejecting the formed crucible through a hydraulic or mechanical lifting mechanism. However, the existing technology has the following problems that urgently need to be solved:

[0003] 1. Uncontrollable demolding sequence leads to mold interference.

[0004] In traditional molds, the lifting mechanism and the separation action of the upper mold are synchronized or disordered. This can easily lead to the lifting mechanism starting to eject before the upper mold is completely separated from the lower mold, resulting in collision damage between the upper and lower molds or tearing of the crucible due to uneven force. The yield rate is generally lower than 85%.

[0005] 2. Ejection instability caused by unidirectional force

[0006] Most lifting mechanisms are driven by a single link or rigid connection, lacking a balanced force design. During the lifting process, the lateral torque can easily cause the receiving parts to tilt, resulting in cracks or deformation at the bottom of the crucible. This makes them particularly unsuitable for the production of thin-walled, high-precision crucibles.

[0007] 3. Insufficient guiding accuracy affects ejection quality.

[0008] Existing molds have simple lifting and guiding structures (such as a single lifting hole). The lifting rod is prone to lateral displacement during movement, which leads to deviation in the crucible ejection position. Long-term use will aggravate component wear and affect the mold's lifespan. Utility Model Content

[0009] The purpose of this invention is to provide an alumina crucible mold device to solve the problems mentioned in the background art.

[0010] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0011] An alumina crucible mold device includes a positioning seat, an installation groove is provided on the upper surface of the positioning seat, a lower mold is fixedly connected to the inner wall of the installation groove, an upper mold is provided above the lower mold, and a lifting component is provided on the side of the upper mold.

[0012] A hydraulic rod is fixedly connected to the top of the upper mold, and the outer wall of the hydraulic rod is fixedly connected to the top of the positioning seat through a mounting bracket;

[0013] The lifting assembly includes a lifting rod, a groove is provided on the side of the lifting rod near the top, a lifting insert is slidably connected to the inner wall of the groove, one end of the lifting insert is fixedly connected to the top of the upper mold, a lifting hole is provided on the bottom surface of the lower mold, a lifting bottom rod is movably inserted into the inner wall of the lifting hole, a receiving plate is fixedly connected to the top of the lifting bottom rod, and one end of the lifting bottom rod is fixedly connected to the side of the lifting rod near the bottom.

[0014] A further improvement of this utility model is that: a mounting block is fixedly connected to the side of the lifting rod away from the lower mold, a buffer spring is fixedly connected to the bottom surface of the mounting block, and a positioning cross plate for supporting the buffer spring is fixedly connected to the inner wall of the positioning seat.

[0015] A further improvement of this utility model is that the bottom end of the buffer spring is fixedly connected to the upper surface of the positioning plate.

[0016] A further improvement of this utility model is that a support leg is fixedly connected to the bottom surface of the positioning seat.

[0017] A further improvement of this utility model is that: the bottom surface of the positioning seat is provided with an auxiliary bottom groove adapted to the lifting bottom rod, and the inner wall of the auxiliary bottom groove is movably connected to the outer wall of the lifting bottom rod.

[0018] A further improvement of this utility model is that a positioning block is fixedly connected to the end of the lifting rod away from the upper mold, thus forming a T-shaped structure.

[0019] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0020] 1. This utility model provides an alumina crucible mold device. By creating a groove on the lifting rod and cooperating with the sliding connection of the lifting rod, the device achieves the action sequence control of "separating the mold first and then ejecting the crucible". When the upper mold rises via the hydraulic rod, the lifting rod first slides freely in the groove to ensure that the upper and lower molds are completely separated before driving the lifting rod to eject the crucible. This avoids the mold collision or crucible tearing problems caused by the chaotic demolding sequence in traditional molds, and increases the crucible yield from 85% in the prior art to over 98%.

[0021] 2. This utility model provides an alumina crucible mold device that utilizes a mechanical balance system formed by a buffer spring and a lifting rod. During movement, the lifting rod experiences uniform force on both sides: the lifting rod provides upward driving force through the traction force of the upper mold, while the buffer spring counteracts the unilateral tilting torque through its elastic restoring force, ensuring the receiving plate is vertically ejected from the crucible and preventing cracks at the bottom of the crucible caused by uneven force. Simultaneously, this structure reduces wear on mechanical parts, extending the lifespan of key mold components by more than 30%.

[0022] 3. This utility model provides an alumina crucible mold device. The auxiliary bottom groove on the bottom surface of the positioning seat is adapted to the lifting bottom rod, and together with the lifting hole of the lower mold, forms a double guiding structure to ensure that the lifting bottom rod moves stably in the vertical direction and eliminates lateral offset during demolding (offset ≤ 0.1mm). This design effectively improves the positional accuracy of the crucible ejection process and avoids crucible deformation caused by ejection tilt, and is especially suitable for the mass production of high-precision alumina crucibles. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the lifting component structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the lifting base rod structure of this utility model.

[0027] In the diagram: 1. Positioning seat; 2. Lower mold; 3. Upper mold; 4. Mounting bracket; 5. Hydraulic rod; 6. Positioning cross plate; 7. Lifting assembly; 8. Lifting rod; 9. Slide groove; 10. Lifting insert rod; 11. Buffer spring; 12. Lifting base rod; 13. Lifting hole; 14. Receiving plate. Detailed Implementation

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0029] The present invention will be further described in detail below with reference to embodiments:

[0030] Example 1

[0031] like Figure 1-4 As shown, this utility model provides an alumina crucible mold device, including a positioning seat 1, an installation groove is provided on the upper surface of the positioning seat 1, a lower mold 2 is fixedly connected to the inner wall of the installation groove, an upper mold 3 is provided above the lower mold 2, and a lifting component 7 is provided on the side of the upper mold 3.

[0032] A hydraulic rod 5 is fixedly connected to the top of the upper mold 3, and the outer wall of the hydraulic rod 5 is fixedly connected to the top of the positioning seat 1 through the mounting bracket 4;

[0033] The lifting assembly 7 includes a lifting rod 8. A groove 9 is provided on the side of the lifting rod 8 near the top. A lifting rod 10 is slidably connected to the inner wall of the groove 9. One end of the lifting rod 10 is fixedly connected to the top of the upper mold 3. A lifting hole 13 is provided on the bottom surface of the lower mold 2. A lifting bottom rod 12 is movably inserted into the inner wall of the lifting hole 13. A receiving plate 14 is fixedly connected to the top of the lifting bottom rod 12. One end of the lifting bottom rod 12 is fixedly connected to the side of the lifting rod 8 near the bottom.

[0034] Example 2

[0035] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, a mounting block is fixedly connected to the side of the lifting rod 8 away from the lower mold 2, a buffer spring 11 is fixedly connected to the bottom surface of the mounting block, and a positioning horizontal plate 6 for receiving the buffer spring 11 is fixedly connected to the inner wall of the positioning seat 1.

[0036] The bottom end of the buffer spring 11 is fixedly connected to the upper surface of the positioning plate 6.

[0037] The bottom surface of the positioning seat 1 is fixedly connected to a support leg.

[0038] The bottom surface of the positioning seat 1 is provided with an auxiliary bottom groove that is adapted to the lifting bottom rod 12, and the inner wall of the auxiliary bottom groove is movably connected to the outer wall of the lifting bottom rod 12.

[0039] The end of the lifting rod 10 away from the upper mold 3 is fixedly connected to a positioning block, forming a T-shaped structure.

[0040] The lifting hole 13 and the auxiliary bottom groove guide the positioning seat 1. The auxiliary bottom groove is adapted to the lifting bottom rod 12. Its inner wall is movably connected to the outer wall of the lifting bottom rod 12 to ensure that the lifting bottom rod 12 moves stably in the vertical direction and avoids lateral displacement during demolding.

[0041] The timing control of the slide 9 stroke, the length design of the slide 9 limits the sliding stroke of the lifting rod 10, realizes the action sequence of "separating the mold first and then ejecting the crucible", and ensures the orderliness of the demolding process through mechanical structure, thereby improving the safety of mold use.

[0042] The buffer spring 11 provides bidirectional mechanical balance. In the initial state, the buffer spring 11 fixes the position of the receiving plate 14 through tensile force. During demolding, the buffer spring 11 balances the forces on both sides of the lifting rod 8 through elastic deformation. This design effectively reduces the wear of mechanical parts and improves the long-term stability of the device.

[0043] The working principle of this alumina crucible mold device will be explained in detail below.

[0044] like Figure 1-4 As shown, an initial mold closing state and forming support

[0045] The device positioning and mold closing positioning seat 1 is stably placed by the support legs on the bottom surface, and the lower mold 2 is fixed in the mounting groove on the upper surface of the positioning seat 1. The upper mold 3 is connected to the mounting bracket 4 on the top of the positioning seat 1 by a hydraulic rod 5. In the initial state, the hydraulic rod 5 is in the retracted state, driving the upper mold 3 to move downward and fit against the lower mold 2 to form a closed cavity for the forming of the alumina crucible.

[0046] In the initial stress state of the lifting assembly 7, the side of the lifting rod 8 away from the lower mold 2 is connected to a buffer spring 11 via a mounting block. The bottom end of the buffer spring 11 is fixed to the positioning plate 6 on the inner wall of the positioning seat 1. In the initial state, the buffer spring 11 is in a stretched state, applying a vertical downward pulling force to the lifting rod 8, causing the lifting bottom rod 12 at the bottom of the lifting rod 8 to be inserted into the lower mold 2 through the lifting hole 13 on the bottom surface of the lower mold 2. The receiving plate 14 at the top end is tightly attached to the bottom of the inner wall of the lower mold 2, providing a stable bottom support surface for crucible forming.

[0047] Step-by-step action mechanism of the demolding process

[0048] During the separation phase of the upper and lower molds, when the hydraulic rod 5 extends, it drives the upper mold 3 to move upwards in the vertical direction, separating it from the lower mold 2. At this time, the lifting rod 10 fixed to the top of the upper mold 3 slides within the groove 9 of the lifting rod 8. Since the groove 9 is reserved for an initial free slide, the lifting rod 10 slides within the groove 9 first without moving the lifting rod 8, ensuring that the upper mold 3 is completely separated from the lower mold 2 before the lifting mechanism is activated, thus avoiding mold interference during demolding.

[0049] During the crucible ejection stage, when the upper mold 3 rises to the point where the positioning block of the lifting rod 10 abuts against the top of the slide groove 9, the lifting rod 10 drives the lifting rod 8 to move upward. The lifting bottom rod 12 at the bottom of the lifting rod 8 moves upward accordingly, pushing the receiving plate 14 into the lower mold 2 through the lifting hole 13, thus lifting the formed alumina crucible upward from the bottom of the inner wall of the lower mold 2.

[0050] The buffer spring 11 plays a role in balancing the forces on the lifting rod 8 during its movement. The forces on both sides of the lifting rod 8 are balanced by the buffer spring 11 and the lifting rod 10.

[0051] The lifting rod 10 is driven upward by the traction force of the upper mold 3;

[0052] The buffer spring 11 is located on the other side of the lifting rod 8 and provides a reverse pulling force through elastic restoring force to counteract the tilting torque caused by the force on one side, ensuring that the lifting rod 8 moves vertically and that the receiving plate 14 applies force evenly to the bottom of the crucible, thus avoiding crucible damage caused by uneven force during the ejection process.

[0053] After demolding is completed and the mechanism resets, once the receiving plate 14 has completely ejected the crucible from the lower mold 2, the hydraulic rod 5 retracts, and the upper mold 3 returns to its initial position. Simultaneously, the lifting rod 8 resets downwards under the pulling force of the buffer spring 11, and the receiving plate 14 re-adheres to the bottom of the inner wall of the lower mold 2, completing the demolding cycle and preparing for the next stage of crucible forming.

[0054] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An alumina crucible mould arrangement comprising a locating seat (1), characterised in that: The upper surface of the positioning seat (1) is provided with an installation groove, the inner wall of the installation groove is fixedly connected with a lower mold (2), an upper mold (3) is provided above the lower mold (2), and a lifting component (7) is provided on the side of the upper mold (3). A hydraulic rod (5) is fixedly connected to the top of the upper mold (3), and the outer wall of the hydraulic rod (5) is fixedly connected to the top of the positioning seat (1) through the mounting bracket (4); The lifting assembly (7) includes a lifting rod (8), a groove (9) is provided on the side of the lifting rod (8) near the top, a lifting rod (10) is slidably connected to the inner wall of the groove (9), one end of the lifting rod (10) is fixedly connected to the top of the upper mold (3), a lifting hole (13) is provided on the bottom surface of the lower mold (2), a lifting bottom rod (12) is movably inserted into the inner wall of the lifting hole (13), a receiving plate (14) is fixedly connected to the top of the lifting bottom rod (12), and one end of the lifting bottom rod (12) is fixedly connected to the side of the lifting rod (8) near the bottom.

2. An alumina crucible mould apparatus as claimed in claim 1, characterised in that: The lifting rod (8) is fixedly connected to a mounting block on the side away from the lower mold (2), and a buffer spring (11) is fixedly connected to the bottom surface of the mounting block. A positioning plate (6) for receiving the buffer spring (11) is fixedly connected to the inner wall of the positioning seat (1).

3. The alumina crucible mold device according to claim 2, characterized in that: The bottom end of the buffer spring (11) is fixedly connected to the upper surface of the positioning plate (6).

4. The alumina crucible mold device according to claim 1, characterized in that: The bottom surface of the positioning seat (1) is fixedly connected to a support leg.

5. The alumina crucible mold device according to claim 1, characterized in that: The bottom surface of the positioning seat (1) is provided with an auxiliary bottom groove that is adapted to the lifting bottom rod (12), and the inner wall of the auxiliary bottom groove is movably connected to the outer wall of the lifting bottom rod (12).

6. The alumina crucible mold device according to claim 1, characterized in that: The end of the lifting rod (10) away from the upper mold (3) is fixedly connected to a positioning block.

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