Aluminum profile extrusion die with cleaning structure

Abstract

The utility model discloses an aluminum profile extrusion die with a cleaning structure, which relates to the technical field of aluminum profile extrusion dies, and particularly comprises an upper die and a lower die which are mutually overlapped, a die core is arranged at the center of one side of the upper die, a plurality of shunting holes are arranged on the periphery of the die core, a forming cavity matched with the die core is arranged at the center of the lower die, and the cleaning structure is arranged in the forming cavity. A flowing gap is formed between the mold core and the forming cavity; a welding chamber is arranged on the edge of the end, close to the upper die, of the forming cavity and right faces the flow dividing holes, a cylindrical hole communicated with the welding chamber is formed in one side of the lower die, and a core rod is movably contained in the cylindrical hole. During use, the electric control valve is controlled to be opened to enable high-pressure gas in the high-pressure inflator pump to enter the welding chamber, and after entering the welding chamber, the high-pressure gas quickly flows towards the interiors of the upper die and the lower die, so that not only can the interior of the die be cooled, but also metal chips in the die can be blown out; therefore, the function of cleaning the interior of the mold is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum extrusion dies, in particular to an aluminum profile extrusion die with a cleaning structure. Background Technique

[0002] An aluminum extrusion die is an important tool in the aluminum extrusion process, used to realize the extrusion forming of aluminum profiles. An extrusion die refers to a special die composed of a die body and die accessories, and its shape and size are designed and manufactured according to the cross-sectional dimensions and shapes of aluminum profiles.

[0003] Dies all have a certain service life. After the die is installed in the extruder, it will not be disassembled during its service life. There will be a welding chamber between the upper die and the lower die of the die, and some metal debris will remain in the welding chamber. Moreover, during the extrusion process, the extrusion force between the aluminum material and the die is large, resulting in a high temperature of the die. If continuous extrusion is required, cooling is needed, otherwise it will affect the life of the die. For this reason, we propose an aluminum profile extrusion die with a cleaning structure. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing aluminum extrusion die that has a high internal temperature and residual metal debris during the extrusion process, the utility model provides an aluminum profile extrusion die with a cleaning structure, which has the advantages of blowing air into the die to let the debris flow out from the die port and being able to cool the die, and solves the problems raised in the above background technique.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0006] Design an aluminum profile extrusion die with a cleaning structure, including an upper die and a lower die stacked on top of each other. A die core is provided at the center of one side of the upper die, and a number of flow splitting holes are provided around the die core. A forming cavity matching the die core is provided at the center of the lower die, and the die core is placed in the forming cavity with a flow gap therebetween;

[0007] A welding chamber is provided at the edge of the end of the forming cavity close to the upper die, and the welding chamber is aligned with the flow splitting holes. A cylindrical hole communicating with the welding chamber is provided on one side of the lower die, and a mandrel is movably accommodated in the cylindrical hole. In the initial state, the end of the mandrel close to the axis of the lower die is flush with the inner wall of the welding chamber, and the other end of the mandrel extends outside the lower die;

[0008] An air inlet channel communicating with the cylindrical hole is provided on the side of the lower die away from the upper die. There is a certain distance between the air inlet channel and the edge of the welding chamber. A pipe joint is installed at the end of the air inlet channel, and the other end of the pipe joint is provided with an air inlet pipe;

[0009] It also includes two supports symmetrically arranged on the mounting base. Positioning grooves are provided on the adjacent sides of the two supports. After the upper die and the lower die are spliced, they are placed in the positioning grooves for fixation. At one end of the mounting base, there is a telescopic mechanism that can drive the mandrel to stretch in the cylindrical hole. The telescopic end of the telescopic mechanism is coaxially connected to the mandrel, and the telescopic mechanism is arranged on the mounting base through a bracket.

[0010] Preferably, mounting planes perpendicular to the mounting base are provided on both sides of the upper die and the lower die, and there is a clearance fit between the mounting planes and the inner walls of the positioning grooves.

[0011] Preferably, the cylindrical hole is opened at the mounting plane, and a telescopic opening for accommodating the mandrel is provided on the support.

[0012] Preferably, at least one screw hole is further provided on each mounting plane, mounting holes corresponding to the screw holes are provided on the support, and fastening bolts are provided in each mounting hole.

[0013] Preferably, the length of the mandrel drawn outwards is such that the intake passage is completely exposed.

[0014] Preferably, a limiting groove is provided at the edge of the welding chamber, a limiting boss is provided on the side of the upper die close to the lower die, the limiting boss is placed in the limiting groove, and the shunt holes penetrate through the limiting boss.

[0015] Preferably, at least one positioning block is provided on the surface of the limiting boss, a positioning port corresponding to the positioning block is provided on the side surface of the limiting groove, and the positioning block is placed in the positioning port.

[0016] Preferably, a feed port is provided in the middle of the side of the upper die away from the lower die, and the shunt holes are respectively located in the feed port.

[0017] Preferably, the other end of the intake pipe is connected to a high-pressure inflation pump, an electric control valve is provided on the intake pipe, the electric control valve is connected to a controller, and the controller is connected to the telescopic mechanism.

[0018] Compared with the prior art, when in use of the present utility model, after one extrusion is completed in the mold, the controller controls the electric control valve to open to allow the high-pressure gas in the high-pressure inflation pump to enter the welding chamber. After the high-pressure gas enters the inside of the welding chamber, the high-pressure gas will flow rapidly towards the inside of the upper die and the lower die, which can not only cool the inside of the mold, but also blow out the metal chips inside the mold, thereby achieving the function of cleaning the inside of the mold. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of one side of the present utility model.

[0020] Figure 2 It is a schematic structural diagram of the other side of the present utility model.

[0021] Figure 3This is the top view of the utility model.

[0022] Figure 4 This is the sectional view of the top view of the utility model.

[0023] Figure 5 This is the schematic diagram of the end face structure of the lower die of the utility model.

[0024] In the figure: 1, mounting seat; 2, support; 3, feed inlet; 4, shunt hole; 5, upper die; 6, lower die; 7, limit groove; 8, die core; 9, positioning port; 10, mounting plane; 11, screw hole; 12, cylindrical hole; 13, mandrel; 14, welding chamber; 15, inlet pipe; 16, mounting hole; 17, positioning groove; 18, expansion port; 19, bracket; 20, expansion mechanism; 21, forming cavity; 22, limit boss; 23, positioning block; 24, pipe joint; 25, intake passage. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1 to 5 , the present utility model provides a technical solution: an aluminum profile extrusion die with a cleaning structure, including an upper die 5 and a lower die 6 stacked on each other. A die core 8 is provided at the center of one side of the upper die 5, and a plurality of shunt holes 4 are provided around the die core 8. A forming cavity 21 matching the die core 8 is provided at the center of the lower die 6. The die core 8 is placed in the forming cavity 21 and there is a flow gap between the two. In the actual application process, the shapes of the die core 8 and the forming cavity 21 can be rectangular, triangular, etc., or can be designed into special-shaped structures. The shapes of the die core 8 and the forming cavity 21 can be determined according to the profile to be extruded.

[0027] As Figure 1 shown, a welding chamber 14 is provided at the edge of one end of the forming cavity 21 close to the upper die 5. The welding chamber 14 is opposite to the shunt hole 4. The main function of the welding chamber is to gather the metal flowing out of the shunt holes together and re-weld them to form an integral blank centered on the die core. Due to the continuous aggregation of the metal, the static pressure continuously increases until extrusion molding.

[0028] As Figure 1 and Figure 4As shown in the figure, a cylindrical hole 12 communicating with the welding chamber 14 is provided on one side of the lower die 6. A mandrel 13 is movably accommodated in the cylindrical hole 12. In the initial state, the end of the mandrel 13 close to the axis of the lower die 6 is flush with the inner wall of the welding chamber 14, and the other end of the mandrel 13 extends outside the lower die 6. There is a clearance fit between the mandrel 13 and the cylindrical hole 12, and the fit tolerance can be zero;

[0029] An air inlet channel 25 communicating with the cylindrical hole 12 is opened on the side of the lower die 6 away from the upper die 5. There is a certain distance between the air inlet channel 25 and the edge of the welding chamber 14 (such as Figure 4 shown), and a pipe joint 24 is installed inside the end of the air inlet channel 25. The other end of the pipe joint 24 is provided with an air inlet pipe 15. As Figure 1 and Figure 2 shown, the present invention further includes two supports 2 symmetrically arranged on the mounting base 1. The supports and the mounting base constitute the support structure of the upper die and the lower die, which enables the upper die and the lower die to work stably. The mounting base 1 can be fastened to the extruder by bolts. As shown in Figure 1, positioning grooves 17 are opened on the adjacent sides of the two supports 2. After the upper die 5 and the lower die 6 are spliced, they are placed in the positioning grooves 17 for fixation. A telescopic mechanism 20 capable of driving the mandrel 13 to expand and contract in the cylindrical hole 12 is provided at one end of the mounting base 1. The telescopic end of the telescopic mechanism 20 is coaxially connected to the mandrel 13, and the telescopic mechanism 20 is arranged on the mounting base 1 through a bracket 19;

[0030] The pipe joint 24 is threadedly connected to the port of the air inlet channel 25. The other end of the air inlet pipe 15 is connected to a high-pressure air pump. An electric control valve is provided on the air inlet pipe 15. The electric control valve is connected to a controller (such as a PLC logic controller, a control main board, a single-chip microcomputer control board or a host, etc.). The controller is connected to the telescopic mechanism 20. The telescopic mechanism 20 is one of an electric push rod, a cylinder or a hydraulic cylinder. However, it should be noted that the electric control valve, the controller and the high-pressure air pump should be arranged at a position far from the mold, and the controller is connected to an operation keyboard and buttons, which is convenient for control and will not let the high temperature affect the operation of the controller;

[0031] First of all, the process of cleaning the inside of the mold is that after an extrusion is completed inside the upper die 5 and the lower die 6, the controller controls the electric control valve to open. As Figure 4 shown, the high-pressure gas in the high-pressure air pump quickly enters the welding chamber 14 through the air inlet pipe 15. Since there is a flow gap between the forming cavity 21 and the die core 8, and the shunt holes 4 and the welding chamber 14 are all connected, when the high-pressure gas enters the inside of the welding chamber 14, the high-pressure gas will quickly flow towards the inside of the upper die 5 and the lower die 6. This can not only cool the inside of the mold, but also blow out the metal debris inside the mold, so as to achieve the function of cleaning the inside of the mold;

[0032] Secondly, the length of the mandrel 13 drawn outwards only needs to be such that the air inlet passage 25 is completely exposed, that is, the mandrel is moved inside the cylindrical hole 12 under the drive of the telescopic mechanism 20. When the mandrel 13 is drawn outwards by a certain distance and the air inlet passage 25 communicates with the cylindrical hole 12, air can be blown into the welding chamber 14 for cleaning. However, during the extrusion operation, the mandrel fills and seals the entire cylindrical hole 12 under the drive of the telescopic mechanism, and at this time, the mandrel also completely seals the air inlet passage 25 to prevent metal from flowing out during extrusion.

[0033] Furthermore, as Figure 1 shown, mounting planes 10 perpendicular to the mounting base are provided on both sides of the upper die 5 and the lower die 6. The mounting plane 10 has a clearance fit with the inner wall of the positioning groove 17; the cylindrical hole 12 is opened at the mounting plane 10, and a telescopic opening 18 for accommodating the mandrel 13 is provided on the support 2, that is, the mandrel 13 is placed inside the telescopic opening 18, and the size of the telescopic opening 18 is larger than the diameter of the mandrel, which facilitates installation;

[0034] To make the mold and the support more stable, at least one screw hole 11 is provided on each mounting plane 10, and a mounting hole 16 corresponding to the screw hole 11 is provided on the support 2. A fastening bolt is provided in each mounting hole 16. After the upper die 5 and the lower die 6 are closed and placed between the supports 2, the limiting groove 7 just fits with the mold, that is, the mold is fixed by clearance fit and clamped therein, and at this time, the upper die 5 and the lower die 6 can be fixed by the fastening bolts.

[0035] Furthermore, as Figure 1 and Figure 5 shown, a limiting groove 7 is provided at the edge of the welding chamber 14, and a limiting boss 22 is provided on the side of the upper die 5 close to the lower die 6. The limiting boss 22 is placed inside the limiting groove 7, and the shunt hole 4 penetrates through the limiting boss 22. When the dies are closed, the limiting boss 22 just fits into the limiting groove 7 for plug-in fixation; and at least one positioning block 23 is provided on the surface of the limiting boss 22, and a positioning port 9 corresponding to the positioning block 23 is provided on the side surface of the limiting groove 7. The positioning block 23 is placed inside the positioning port 9, so that while the upper die 5 and the lower die 6 can be quickly closed, the upper die 5 and the lower die 6 can be positioned and fixed, preventing unnecessary slippage of the positions of the upper die 5 and the lower die 6 during the working process.

[0036] Based on the above embodiments, it can be further optimized that a feeding port 3 is provided in the middle of the side of the upper die 5 away from the lower die 6, and the shunt holes 4 are respectively located inside the feeding port 3. The feeding port 3 is located on one side of the pushing rod of the extruder. When the aluminum material is pushed by the pushing rod, it can first be stuck in the feeding port 3 and then gradually enter the shunt holes and the forming cavity 21 under the action of pressure.

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An aluminum profile extrusion die with a cleaning structure, comprising an upper die (5) and a lower die (6) stacked on each other, a die core (8) is provided at the center of one side of the upper die (5), a plurality of flow diversion holes (4) are provided around the die core (8), a molding cavity (21) matching the die core (8) is provided at the center of the lower die (6), the die core (8) is placed in the molding cavity (21), and a flow gap is provided between the two; A welding chamber (14) is provided at one end edge of the molding cavity (21) close to the upper mold (5), and the welding chamber (14) is directly opposite to the diversion hole (4), and is characterized in that: A cylindrical hole (12) communicating with a welding chamber (14) is provided on one side of the lower mold (6), and a core rod (13) is movably accommodated in the cylindrical hole (12). In an initial state, one end of the core rod (13) close to the axis of the lower mold (6) is flush with the inner wall of the welding chamber (14), and the other end of the core rod (13) extends to the outside of the lower mold (6); An air inlet channel (25) communicating with the cylindrical hole (12) is provided on a side of the lower mold (6) away from the upper mold (5); the air inlet channel (25) is spaced a certain distance from the edge of the welding chamber (14); a pipe joint (24) is installed at the end of the air inlet channel (25); and an air inlet pipe (15) is provided at the other end of the pipe joint (24); The invention also comprises two supports (2) symmetrically arranged on the mounting seat (1), a positioning groove (17) being provided on the adjacent side of the two supports (2), an upper die (5) and a lower die (6) being spliced ​​and fixed in the positioning groove (17), a telescopic mechanism (20) being provided at one end of the mounting seat (1) and capable of driving the core rod (13) to telescope in the cylindrical hole (12), the telescopic end of the telescopic mechanism (20) being coaxially connected to the core rod (13), and the telescopic mechanism (20) being arranged on the mounting seat (1) via a bracket (19).

2. The aluminum profile extrusion die with a cleaning structure according to claim 1, characterized in that: Both sides of the upper die (5) and the lower die (6) are provided with mounting planes (10) perpendicular to the mounting seat, and the mounting planes (10) are clearance-matched with the inner wall of the positioning groove (17).

3. The aluminum profile extrusion die with a cleaning structure according to claim 2, characterized in that: The cylindrical hole (12) is opened on the mounting plane (10), and a telescopic opening (18) for accommodating the core rod (13) is provided on the support (2).

4. The aluminum profile extrusion die with a cleaning structure according to claim 3, characterized in that: At least one screw hole (11) is also provided on each mounting plane (10), a mounting hole (16) corresponding to the screw hole (11) is provided on the support (2), and a fastening bolt is provided in each mounting hole (16).

5. The aluminum profile extrusion die with a cleaning structure according to claim 1, characterized in that: The core rod (13) can be pulled out to a length that allows the air inlet passage (25) to completely leak out.

6. The aluminum profile extrusion die with a cleaning structure according to claim 1, characterized in that: A limiting groove (7) is provided at the edge of the welding chamber (14), a limiting boss (22) is provided on the side of the upper die (5) close to the lower die (6), the limiting boss (22) is placed in the limiting groove (7), and the diverter hole (4) passes through the limiting boss (22).

7. The aluminum profile extrusion die with a cleaning structure according to claim 6, characterized in that: At least one positioning block (23) is provided on the surface of the limiting boss (22), a positioning opening (9) corresponding to the positioning block (23) is provided on the side surface of the limiting groove (7), and the positioning block (23) is placed in the positioning opening (9).

8. The aluminum profile extrusion die with a cleaning structure according to claim 7, characterized in that: A feed inlet (3) is provided in the middle of one side of the upper die (5) away from the lower die (6), and the diversion holes (4) are respectively located in the feed inlet (3).

9. The aluminum profile extrusion die with a cleaning structure according to claim 5, characterized in that: The other end of the air intake pipe (15) is connected to the high-pressure air pump. The air intake pipe (15) is provided with an electric control valve, which is connected to a controller, and the controller is connected to the telescopic mechanism (20).

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