Thin-wall multi-cavity building profile extrusion die

Abstract

The utility model discloses a thin-wall multi-cavity building profile extrusion die, and relates to the field of extrusion dies. The mold comprises a divergent mold body and a forming mold body, the divergent mold body and the forming mold body are fixed in an inserted connection mode through an inserted connection mechanism, the inserted connection mechanism comprises a plurality of inserted connection pieces, the inserted connection pieces are fixedly connected with the divergent mold body, and thermal expansion pieces are fixedly clamped on the inner sides of the inserted connection pieces. A plurality of inserting pieces in the inserting mechanism are fixedly connected with the divergent die, thermal expansion pieces are clamped on the inner sides of the inserting pieces, self-locking is achieved in the extrusion and temperature rise process by means of the characteristic that the thermal expansion coefficient of the thermal expansion pieces is higher than that of other components, and by means of the thermal expansion fixing mode, the connection stability of the die is improved, and the die can be conveniently assembled and disassembled. And the pressure is effectively dispersed, and the condition of stress concentration is avoided.

Description

Technical Field

[0001] This utility model relates to the field of extrusion molds, specifically a thin-walled multi-cavity building profile extrusion mold. Background Technology

[0002] Aluminum profile extrusion dies are the core tools in aluminum profile production. Their material and design directly affect production efficiency and product quality. The dies are usually made of high-quality steel and have a complex structure, including a flow divider and a forming die, and are used to extrude heated and softened aluminum rods into aluminum profiles of a specific shape.

[0003] In the process of installing and using existing aluminum profile extrusion dies, the splitting die and forming die are usually installed and fastened by a combination of pin hole positioning and bolt fastening. However, in the traditional installation method, the bolt installation position is the only support force point between the two, which results in a relatively single force point and concentrated force in the installation structure, leading to the potential for insufficient installation stability. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a thin-walled multi-cavity building profile extrusion mold to solve the technical problem that the traditional assembly system uses the bolt connection point as the only rigid support area of ​​the mold closing interface, resulting in a single stress point.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thin-walled multi-cavity building profile extrusion die, comprising a flow-dividing die and a forming die, wherein the flow-dividing die and the forming die are fixedly connected by an insertion mechanism, the insertion mechanism comprising a plurality of insertion pieces, the plurality of insertion pieces being fixedly connected to the flow-dividing die, the inner side of the insertion pieces being fixedly clamped with a thermal expansion piece, the thermal expansion piece having a thermal expansion coefficient higher than the insertion pieces, the flow-dividing die, and the forming die, the forming die having a slot on one side surface near the flow-dividing die, and a slot being provided opposite to the position of the plurality of insertion pieces, the insertion pieces being inserted into the slot and fixed by thermal expansion.

[0006] By adopting the above technical solution, the insertion plate of the insertion mechanism and the thermal expansion plate are set to interlock, and dynamic self-locking is achieved by utilizing the difference in thermal expansion coefficients. When the mold is heated to the extrusion temperature, the significant expansion of the thermal expansion plate drives the insertion plate to form an interference fit with the slot of the forming mold, thus eliminating the single-point stress concentration problem of traditional bolt connections.

[0007] Furthermore, several of the plug-in pieces are arranged in a ring at equal intervals along the central axis of the flow divider, the plug-in pieces are rectangular plate-shaped structures, the flow divider has several flow divider holes, and a flow divider bridge is formed between adjacent flow divider holes, and a mold core is provided at the center of the flow divider.

[0008] By adopting the above technical solution, the mold is subjected to more uniform force, which further improves the overall stability of the mold. The plug-in piece has a rectangular plate structure, which is easy to process and install, and can provide sufficient contact area to enhance the stability of the plug-in.

[0009] Furthermore, protrusions are formed on both sides of the plug-in piece, and grooves are formed on both sides of the inner wall of the slot. The protrusions and grooves are thermally expanded and fastened together, and the protrusions have an arc-shaped protrusion structure.

[0010] By adopting the above technical solution, the protrusions formed on both sides of the connector plate cooperate with the grooves on both sides of the inner wall of the slot to achieve thermal expansion and fastening. This fastening method not only enhances the connection strength between the connector plate and the slot, but also effectively prevents the connector plate from falling off or loosening during the compression process.

[0011] Furthermore, guide angles are formed on both sides of the end of the connector to guide the connector into the slot.

[0012] By adopting the above technical solution, the guide angle provides a clear insertion direction for the connector, making it easier to align the connector when inserting it into the slot, thus reducing errors and rework during the assembly process.

[0013] Furthermore, a boss is formed on the side of the flow divider near the forming mold, and the edges of the flow divider and the forming mold are connected in a stepped interlocking structure through the boss.

[0014] By adopting the above technical solution, the boss provides an additional support point for the mold, enhancing the overall stability and deformation resistance of the mold. The stepped interlocking structure between the boss and the edge of the forming mold makes the mold more tightly assembled, effectively preventing the mold from loosening or shifting during use.

[0015] Furthermore, a splitting mechanism is provided on the outer side of the flow divider and the forming mold. The splitting mechanism includes a cooling separation chamber, a placement chamber, and a preheating chamber. A liquid nitrogen spray cooling device is installed on the inner side of the cooling separation chamber, and an electric heating device is installed on the inner side of the preheating chamber. The cooling separation chamber and the preheating chamber respectively cool and separate the mold and pre-tighten it.

[0016] By adopting the above technical solution, the splitting mechanism provides a convenient means for disassembling the mold. The cooling separation chamber in the splitting mechanism is equipped with a liquid nitrogen spray cooling device, which can quickly cool the thermal expansion plates, relieve the expansion stress, and make the splitting mold and the forming mold easy to separate.

[0017] Furthermore, an outer door is rotatably installed on the outside of the cooling separation chamber, the placement chamber, and the preheating chamber, and a handle is installed on one side of each outer door.

[0018] By adopting the above technical solution, each chamber can remain closed when no operation is required, effectively preventing the entry of external impurities and dust, and ensuring the cleanliness of the chamber and the normal operation of the mold.

[0019] In summary, the present invention has the following main advantages:

[0020] This utility model makes the assembly and disassembly of the mold more convenient through the plug-in mechanism. Several plug-in pieces in the plug-in mechanism are fixedly connected to the diversion mold, and the inner side is clamped with a thermal expansion plate. Utilizing the characteristic that the thermal expansion plate has a higher thermal expansion coefficient than other components, it achieves self-locking during the extrusion heating process. This thermal expansion fixing method not only improves the connection stability of the mold, but also effectively disperses the pressure and avoids stress concentration.

[0021] This invention utilizes a splitting mechanism, which makes the disassembly and assembly of the mold more convenient and efficient. The liquid nitrogen spray cooling device in the cooling separation chamber can quickly reduce the temperature of the thermal expansion sheet, thereby relieving its expansion stress and allowing the flow divider and the forming mold to be easily separated. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

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

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

[0025] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0026] Figure 5 This is a schematic diagram of the disassembly mechanism of this utility model.

[0027] In the diagram: 1. Diverting mold; 2. Forming mold; 3. Diverting hole; 4. Diverting bridge; 5. Mold core; 6. Insertion mechanism; 601. Insertion piece; 602. Thermal expansion piece; 603. Protrusion; 604. Guide angle; 605. Slot; 7. Boss; 8. Splitting mechanism; 801. Cooling separation chamber; 802. Placement chamber; 803. Preheating chamber; 804. Outer door. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Example

[0029] A thin-walled, multi-cavity building profile extrusion die, such as Figure 1-5 As shown, the device includes a flow divider mold 1 and a forming mold 2. The flow divider mold 1 and the forming mold 2 are fixedly connected by an insertion mechanism 6. The insertion mechanism 6 includes several insertion pieces 601, which are fixedly connected to the flow divider mold 1. A thermal expansion sheet 602 is fixedly held on the inner side of the insertion piece 601. The thermal expansion sheet 602 has a higher coefficient of thermal expansion than the insertion piece 601, the flow divider mold 1, and the forming mold 2. A slot 605 is provided on the side surface of the forming mold 2 near the flow divider mold 1, opposite to the position of the insertion pieces 601. The insertion pieces 601 are inserted into the slot 605 and heated. The expansion fixing mechanism uses the insertion plate 601 of the insertion mechanism 6 to engage with the thermal expansion plate 602, achieving dynamic self-locking by utilizing the difference in thermal expansion coefficients. When the mold is heated to the extrusion temperature, the significant expansion of the thermal expansion plate 602 drives the insertion plate 601 to form an interference fit with the slot 605 of the forming mold 2, eliminating the single-point stress concentration problem of traditional bolt connections. At the same time, the ring distribution pattern of multiple insertion plates evenly transmits the load to the entire contact surface of the mold, effectively dispersing the stress during the extrusion process. In addition, the insertion connection eliminates the bolt pre-tightening operation, improving assembly efficiency.

[0030] See Figure 1 , Figure 2 , Figure 3 Several insert pieces 601 are arranged in a ring at equal intervals along the central axis of the flow divider 1. The insert pieces 601 have a rectangular plate structure. Several flow divider holes 3 are opened on the flow divider 1, and flow divider bridges 4 are formed between adjacent flow divider holes 3. A mold core 5 is set at the center of the flow divider 1, which makes the mold more uniform when subjected to force and further improves the overall stability of the mold. The rectangular plate structure of the insert pieces 601 is easy to process and install, and can provide sufficient contact area to enhance the stability of the insertion. At the same time, the flow divider holes 3 opened on the flow divider 1 and the flow divider bridges 4 formed between adjacent flow divider holes 3 effectively control the flow path and flow rate of the molten metal, ensure the balance of multi-cavity flow, and improve the forming quality and consistency of the profile.

[0031] See Figure 1 , Figure 2 , Figure 4Both sides of the insert piece 601 have protrusions 603, and both sides of the inner wall of the slot 605 have grooves. The protrusions 603 and the grooves are thermally expanded and fastened. The protrusions 603 have an arc-shaped protrusion structure. The protrusions 603 formed on both sides of the insert piece 601 cooperate with the grooves on both sides of the inner wall of the slot 605 to achieve thermal expansion fastening. This fastening method not only enhances the connection strength between the insert piece 601 and the slot 605, but also effectively prevents the insert piece 601 from falling off or loosening during the extrusion process. At the same time, the arc-shaped protrusion structure of the protrusions 603 makes the insert piece 601 more smoothly inserted into the slot 605, reducing resistance and wear during the insertion process and extending the service life of the mold.

[0032] See Figure 1 , Figure 2 , Figure 4 The plug-in piece 601 has guide angles 604 formed on both sides of its end to guide the plug-in piece 601 into the slot 605. The guide angles 604 provide a clear insertion direction for the plug-in piece 601, making it easier to align the plug-in piece 601 when it is inserted into the slot 605, reducing errors and rework during the assembly process. At the same time, the design of the guide angles 604 also reduces the friction between the plug-in piece 601 and the slot 605, reducing wear and resistance during the insertion process, improving assembly efficiency and the service life of the mold.

[0033] See Figure 1 , Figure 2 , Figure 3 A boss 7 is formed on the side of the flow divider 1 near the forming mold 2. The edges of the flow divider 1 and the forming mold 2 are connected by a stepped interlocking structure through the boss 7. The boss 7 provides additional support points for the mold, enhancing the overall stability and resistance to deformation of the mold. The stepped interlocking structure between the boss 7 and the edge of the forming mold 2 makes the mold more tightly assembled, effectively preventing the mold from loosening or shifting during use. At the same time, this stepped interlocking structure also has a certain degree of self-locking, which can resist the external force of the mold during the extrusion process to a certain extent, ensuring the reliability and stability of the mold. Example

[0034] See Figure 1 , Figure 2 , Figure 5A splitting mechanism 8 is provided on the outer side of the flow divider 1 and the forming mold 2. The splitting mechanism 8 includes a cooling separation chamber 801, a placement chamber 802, and a preheating chamber 803. A liquid nitrogen spray cooling device is installed on the inner side of the cooling separation chamber 801, and an electric heating device is installed on the inner side of the preheating chamber 803. The cooling separation chamber 801 and the preheating chamber 803 respectively cool and separate the mold and pre-tighten it. The splitting mechanism 8 provides a convenient means for disassembling the mold. The liquid nitrogen spray cooling device installed on the inner side of the cooling separation chamber 801 in the splitting mechanism 8 can quickly cool the thermal expansion sheet 602 and relieve the expansion stress, so that the flow divider 1 and the forming mold 2 can be easily separated. At the same time, the electric heating device installed on the inner side of the preheating chamber 803 can preheat the mold before the mold assembly and maintain the temperature of the mold body, so that the flow divider 1 and the forming mold 2 can be pre-tightened and installed, which improves the convenience and stability of the mold installation and connection.

[0035] See Figure 1 , Figure 2 , Figure 5 The cooling separation chamber 801, the placement chamber 802, and the preheating chamber 803 are rotatably mounted with outer doors 804, and each outer door 804 has a handle on one side. This allows each chamber to remain closed when not in use, effectively preventing the entry of external impurities and dust, ensuring the cleanliness of the chamber interior and the normal operation of the mold. At the same time, the handles on one side of each outer door 804 make it easier and faster for operators to open or close the outer doors without using additional tools or laborious manual pushing and pulling, thus improving work efficiency and ease of operation.

[0036] The implementation principle of this embodiment is as follows: the flow divider 1 is pre-positioned with the slot 605 of the forming mold 2 through the circumferentially distributed insert pieces 601. The thermal expansion piece 602 on the inner side of the insert piece 601 expands significantly during the extrusion and heating process, pushing the insert piece 601 and the slot 605 to form an interference fit and achieve self-locking. Based on the insertion and fixing of multiple insert pieces 601, the pressure is distributed, stress concentration is avoided, and the connection stability of the flow divider 1 and the forming mold 2 is improved.

[0037] The molten metal enters the cavity through the diversion hole 3 of the diversion mold 1, the diversion bridge 4 controls the flow balance of multiple cavities, and the mold core 5 ensures the forming accuracy of the inner wall of the profile.

[0038] During disassembly, the liquid nitrogen spray device of the splitting mechanism 8 rapidly cools the thermal expansion plate 602 area to relieve expansion stress. At the same time, the preheating chamber 803 maintains the temperature of the mold body, which enables the pre-tight installation of the flow divider mold 1 and the forming mold 2, thereby improving the ease of installation and connection of the flow divider mold 1 and the forming mold 2.

[0039] This setup achieves stable production of high-precision thin-walled profiles through a closed-loop logic of plug-in coupling → thermal expansion self-locking → flow splitting forming → temperature control decoupling.

[0040] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A thin-walled multi-cavity building profile extrusion die, characterized in that: The device includes a flow divider (1) and a forming mold (2). The flow divider (1) and the forming mold (2) are connected and fixed by a plug-in mechanism (6). The plug-in mechanism (6) includes several plug-in pieces (601). The several plug-in pieces (601) are fixedly connected to the flow divider (1). The inner side of the plug-in piece (601) is fixedly clamped with a thermal expansion piece (602). The thermal expansion piece (602) has a higher coefficient of thermal expansion than the plug-in piece (601), the flow divider (1), and the forming mold (2). The forming mold (2) is close to one side of the flow divider (1) and has a slot (605) opened at the position opposite to the position of the several plug-in pieces (601). The plug-in piece (601) is plugged into the slot (605) and fixed by thermal expansion.

2. The thin-walled multi-cavity building profile extrusion die according to claim 1, characterized in that: Several of the plug-in pieces (601) are arranged in a ring at equal intervals along the central axis of the diversion mold (1). The plug-in pieces (601) have a rectangular plate structure. Several diversion holes (3) are opened on the diversion mold (1), and a diversion bridge (4) is formed between adjacent diversion holes (3). A mold core (5) is provided at the center of the diversion mold (1).

3. The thin-walled multi-cavity building profile extrusion die according to claim 1, characterized in that: Both sides of the plug-in piece (601) have protrusions (603), and both sides of the inner wall of the slot (605) have grooves. The protrusions (603) and the grooves are thermally expanded and fastened together. The protrusions (603) have an arc-shaped protrusion structure.

4. The thin-walled multi-cavity building profile extrusion die according to claim 1, characterized in that: The two sides of the end of the plug (601) are formed with guide angles (604) to guide the plug (601) into the slot (605).

5. The thin-walled multi-cavity building profile extrusion die according to claim 1, characterized in that: The flow divider (1) has a boss (7) on the side near the forming mold (2), and the edges of the flow divider (1) and the forming mold (2) are connected in a stepped fastening structure by the boss (7).

6. The thin-walled multi-cavity building profile extrusion die according to claim 1, characterized in that: The outer sides of the flow divider (1) and the forming mold (2) are provided with a splitting mechanism (8). The splitting mechanism (8) includes a cooling separation chamber (801), a placement chamber (802), and a preheating chamber (803). A liquid nitrogen spray cooling device is installed on the inner side of the cooling separation chamber (801), and an electric heating device is installed on the inner side of the preheating chamber (803). The cooling separation chamber (801) and the preheating chamber (803) respectively cool and separate the mold and pre-tighten it.

7. The thin-walled multi-cavity building profile extrusion die according to claim 6, characterized in that: The cooling separation chamber (801), the placement chamber (802), and the preheating chamber (803) are rotatably mounted with outer doors (804), and each outer door (804) has a handle on one side.

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