Flow guiding die for reserved table in back hole

Abstract

The utility model belongs to the technical field of extrusion dies, and discloses a flow guiding die for a back hole reserved table, which comprises an upper die and a lower die which are detachably connected together, a feeding hole group is arranged in the middle of one end face of the upper die, a feeding counter bore is arranged in the middle of the feeding hole group, a fifth feeding hole is arranged on the bottom face of the feeding counter bore, and a second feeding hole is arranged on the bottom face of the fifth feeding hole. A flow dividing table is fixedly connected to the position, away from the feeding counter bore, of the inner wall of the fifth feeding hole, a mold core set is arranged in the middle of the other end face of the upper mold, a welding chamber is formed in the position, corresponding to the feeding hole set, of the end face, close to the upper mold, of the lower mold, and a lower mold cavity is formed in the position, corresponding to the mold core set, of the bottom face of the welding chamber. The extrusion die is simple in overall structure, can ensure uniform flow velocity in the extrusion die and reduce pressure loss in the extrusion processing process of a multi-rib reinforced spliced pipe assembly, and has the advantages of accurate guide and improved use effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of extrusion dies, and in particular relates to a die with a flow guide retained in a back hole. Background Art

[0002] In the prior art, in the fields of doors and windows, building curtain walls, industrial equipment, etc., in order to enhance the stability of the structure and reduce deformation or damage caused by factors such as vibration and wind pressure, reinforced pipe assemblies made of aluminum profiles are often used for assembly. Doors and windows, building curtain walls and other building materials assembled using reinforced pipe assemblies can enhance structural strength and rigidity. Reinforced pipe assemblies can be quickly assembled and disassembled, improve construction efficiency, and are easy to maintain. During the assembly process of the reinforced pipe assemblies, sound insulation materials can be filled at the same time to achieve a sound insulation effect.

[0003] When producing reinforced pipe assemblies, extrusion dies are used for extrusion molding. Since the reinforced pipe assemblies need to be assembled in later use, this requires higher precision in production and processing, and has higher requirements on the extrusion dies used for extrusion molding.

[0004] Reinforced pipe assemblies can improve the structural strength of building materials such as doors, windows, and building curtain walls. A large part of the reason is that multiple reinforcing ribs are arranged at key positions in the reinforced pipe assemblies, which can improve their structural strength and rigidity and avoid stress concentration. Therefore, in order to enable the reinforcing ribs to play a reinforcing role while not hindering the later assembly of the reinforced pipe assembly, it is of utmost importance to ensure the high precision and high strength of the reinforcing ribs during the extrusion die processing and molding.

[0005] In the existing mold design, it is difficult to accurately control the flow path and speed of the fluid in the complex cavity, resulting in defects such as uneven filling, shrinkage, bubbles, etc. In addition, the flow resistance of the fluid in the mold will also affect production efficiency, increase energy consumption and production costs, especially in areas such as back holes that are difficult to directly observe and control, which are prone to underfilling or overfilling. Therefore, in the design of the extrusion mold, precise guidance is required to reduce pressure loss, ensure uniform flow rate, and improve filling effect.

[0006] like Figure 6 The figure shows a cross-sectional view of a reinforced pipe assembly, in which a first rib position 100 and a second rib position 200 are provided. When designing the extrusion die of such a reinforced pipe assembly with multiple rib positions, ensuring uniform flow rate is the main technical problem to be solved. Utility Model Content

[0007] The main technical problem to be solved by the utility model is to provide a die with a simple overall structure, which can ensure uniform flow rate in the extrusion die, reduce pressure loss, have precise guidance, and improve filling effect during the extrusion process of reinforced pipe assemblies with multiple ribs.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0009] A mold with a flow guide for a platform in a back hole, comprising an upper mold and a lower mold that are detachably connected together, a feed hole group is provided at a middle position on one end surface of the upper mold, a feed countersunk hole is provided in the middle of the feed hole group, a fifth feed hole is provided on the bottom surface of the feed countersunk hole, a diverter platform is fixedly connected to the inner wall of the fifth feed hole at a position away from the feed countersunk hole, a core group is provided at a middle position on the other end surface of the upper mold, a welding chamber is provided at a position corresponding to the feed hole group on an end surface of the lower mold close to the upper mold, and a lower mold cavity is provided at a position corresponding to the core group on the bottom surface of the welding chamber;

[0010] The mold core group includes a first mold core arranged on a surface of the upper mold away from the feed countersunk hole and at a position corresponding to the feed countersunk hole, a second mold core is arranged at the end of the diverter table close to the lower mold, and a third mold core arranged parallel to the second mold core is arranged at the other end surface of the upper mold close to the second mold core;

[0011] The end of the second mold core is set as a second working belt, the end of the second working belt is set as a second upper empty knife, and the end surface of the second working belt close to the diverter table is set as a second lower empty knife;

[0012] The second lower empty knife includes a small empty knife arranged on the end surface of the second working belt close to the diverter and close to the position of the first mold core, and a large empty knife is arranged on the end surface of the second working belt close to the diverter and far away from the position of the first mold core;

[0013] The width of the small hollow knife is smaller than the width of the large hollow knife.

[0014] The following is a further optimization of the above technical solution by the utility model:

[0015] The feed hole group includes a first feed hole opened on an end surface of the upper mold near the feed countersunk hole;

[0016] A second feed hole arranged symmetrically is provided on one end surface of the upper mold at both sides of the first feed hole;

[0017] Two third feed holes are provided on one end surface of the upper die near the second feed hole, and the two third feed holes are symmetrically arranged with the plane where the center of the feed counterbore and the first feed hole are located as the symmetry plane;

[0018] Two fourth feed holes are provided on one end surface of the upper die near the third feed hole, and the two fourth feed holes are symmetrically arranged with the plane where the center of the feed counterbore and the first feed hole are located as the symmetry plane;

[0019] Further optimization: the first feed hole, the second feed hole, the third feed hole and the fourth feed hole all pass through the upper mold.

[0020] Further optimization: the depth of the feed countersunk hole is 8-15 mm.

[0021] Further optimization: the diverter platform extends to the other end surface of the upper mold close to the lower mold.

[0022] Further optimization: the first working belt is set at the surrounding positions at the end of the first mold core, the first upper empty knife is set at the end of the first working belt, and the end surface of the first working belt close to the diverter table is set as the first lower empty knife.

[0023] Further optimization: the end of the third mold core is set as a third working belt, the end of the third working belt is set as a third upper empty knife, and the end surface of the third working belt close to the diverter table is set as a third lower empty knife.

[0024] The utility model adopts the above technical scheme, which is ingenious in conception and reasonable in structure. In the process of producing the reinforced pipe assembly made of aluminum alloy through the extrusion die, a diverter table is set. After the aluminum rod enters the fifth feed hole, the diverter and guide function of the diverter table makes the soft material of the aluminum rod enter the mold core group evenly and sufficiently, thereby ensuring the forming of the ribs of the reinforced pipe assembly, improving the processing accuracy, facilitating the assembly and use of the reinforced pipe assembly in the later stage, thereby improving production efficiency, being safe and reliable, and being easy to operate. In addition, the overall structure is simple, convenient to manufacture and produce, and can reduce production and use costs and improve economic benefits.

[0025] In addition, the second feed hole, the third feed hole and the fourth feed hole of the feed hole group are arranged symmetrically to ensure uniform flow rate of the aluminum rod when it enters the welding chamber from the upper mold. At the same time, the setting of the feed countersunk hole increases the feed amount of the fifth feed hole, further ensuring the feed amount of the ribs of the reinforced pipe assembly during molding and improving production quality.

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the upper mold structure in the embodiment of the utility model;

[0029] Figure 3This is a structural schematic diagram of the upper mold from another perspective in the embodiment of the utility model;

[0030] Figure 4 A bottom view of the upper die in the embodiment of the utility model;

[0031] Figure 5 This is a schematic diagram of the lower mold structure in the embodiment of the utility model;

[0032] Figure 6 It is a cross-sectional view of a reinforced pipe assembly in an embodiment of the utility model.

[0033] In the figure: 100-first rib position; 200-second rib position; 1-upper mold; 11-feed hole group; 110-first feed hole; 111-second feed hole; 112-third feed hole; 113-fourth feed hole; 12-feed countersunk hole; 13-fifth feed hole; 14-dividing platform; 15-core group; 150-first core; 1501-first working belt; 1502-first upper hollow knife; 1503-first lower hollow knife; 151-second core; 1511-second working belt; 1512-second upper hollow knife; 1513-second lower hollow knife; 1531-small hollow knife; 1532-large hollow knife; 152-third core; 1521-third working belt; 1522-third upper hollow knife; 1523-third lower hollow knife; 2-lower mold; 21-welding chamber; 22-lower model cavity. DETAILED DESCRIPTION

[0034] like Figure 1-6 As shown: A flow-guiding mold with a platform left in the back hole comprises an upper mold 1 and a lower mold 2 which are detachably connected together, a feed hole group 11 is provided at the middle position on one end surface of the upper mold 1, a feed counterbore 12 is provided in the middle of the feed hole group 11, a fifth feed hole 13 is provided on the bottom surface of the feed counterbore 12, a diverter platform 14 is fixedly connected to the inner wall of the fifth feed hole 13 at a position away from the feed counterbore 12, a core group 15 is provided at the middle position of the other end surface of the upper mold 1, a welding chamber 21 is provided at a position corresponding to the feed hole group 11 on one end surface of the lower mold 2 close to the upper mold 1, and a lower model cavity 22 is provided at a position corresponding to the core group 15 on the bottom surface of the welding chamber 21.

[0035] The feed hole group 11 includes a first feed hole 110 opened on an end surface of the upper mold 1 near the feed counterbore 12 .

[0036] The upper mold 1 has an end surface on which second feed holes 111 are symmetrically arranged on both sides of the first feed hole 110 .

[0037] Two third feed holes 112 are provided on one end surface of the upper mold 1 near the second feed hole 111 , and the two third feed holes 112 are symmetrically arranged with the plane where the center of the feed counterbore 12 and the first feed hole 110 are located as the symmetry plane.

[0038] Two fourth feed holes 113 are provided on one end surface of the upper mold 1 near the third feed hole 112 , and the two fourth feed holes 113 are symmetrically arranged with the plane where the center of the feed counterbore 12 and the first feed hole 110 are located as the symmetry plane.

[0039] The first feed hole 110 , the second feed hole 111 , the third feed hole 112 and the fourth feed hole 113 all pass through the upper mold 1 .

[0040] The depth of the feed countersunk hole 12 is 8-15mm. The function of the feed countersunk hole 12 is that when the soft aluminum rod enters from the feed hole group 11, it first enters the feed countersunk hole 12 and then enters the fifth feed hole 13, thereby increasing the feed amount of the fifth feed hole 13 to prepare for the later forming.

[0041] The diverter platform 14 extends to the other end surface of the upper mold 1 close to the lower mold 2 .

[0042] The flow divider 14 divides the area of ​​the fifth feed hole 13 away from the feed counterbore 12 into two flow areas of equal size, and the positions of the flow areas correspond to the positions of the first rib position 100 and the second rib position 200 respectively.

[0043] The function of the diverter 14 is that when the aluminum rod enters the fifth feed hole 13, it is diverted through the diverter 14 and flows into the corresponding flow areas respectively, so that the flow velocity and flow rate of the aluminum rod in the upper mold 1 are uniform. At the same time, the diverter 14 can play a guiding role to facilitate the forming of the first rib position 100 and the second rib position 200.

[0044] The core assembly 15 includes a first core 150 which is arranged on a surface of the upper mold 1 away from the feed counterbore 12 and at a position corresponding to the feed counterbore 12 .

[0045] A first working belt 1501 is arranged around the end of the first mold core 150 , and a first upper air knife 1502 is arranged at the end of the first working belt 1501 .

[0046] The end surface of the first working belt 1501 close to the diverter table 14 is provided with a first lower empty knife 1503 .

[0047] The end of the diverter platform 14 close to the lower mold 2 is provided with a second mold core 151 .

[0048] The position of the diverter table 14 away from the feed counterbore 12 is provided with a second working belt 1511 , and the end of the second working belt 1511 is provided with a second upper air knife 1512 .

[0049] The end surface of the second working belt 1511 close to the diverter table 14 is provided with a second lower empty knife 1513 .

[0050] The second lower hollow knife 1513 includes a small hollow knife 1531 disposed on the end surface of the second working belt 1511 close to the diverter table 14 and close to the first mold core 150 .

[0051] A large hollow knife 1532 is provided on the end surface of the second working belt 1511 close to the diverter table 14 and away from the first mold core 150 .

[0052] The width of the small hollow knife 1531 is smaller than that of the large hollow knife 1532. With this design, it is difficult to feed material at the position of the large hollow knife 1532. The design of the large hollow knife 1532 facilitates feeding material at this position, adjusts the feeding flow rate, ensures sufficient feeding, and ensures the molding quality of the first rib position 100 and the second rib position 200.

[0053] A third mold core 152 arranged parallel to the second mold core 151 is disposed on the other end surface of the upper mold 1 near the second mold core 151 .

[0054] A third working belt 1521 is arranged at the end of the third mold core 152 , and a third upper air knife 1522 is arranged at the end of the third working belt 1521 .

[0055] The end surface of the third working belt 1521 close to the diverter table 14 is provided with a third lower empty knife 1523 .

[0056] When in use, the soft aluminum rod enters the upper mold 1 from the feed hole group 11 and the feed counterbore 12, and the material entering from the feed hole group 11 then enters the welding chamber 21 of the lower mold 2 to wait for re-welding.

[0057] The material entering the feed counterbore 12 passes through the fifth feed hole 13, is diverted and guided by the diverter table 14, and enters the first working belt 1501, the second working belt 1511 and the third working belt 1521 to ensure that the material is evenly fed into the welding chamber 21. After re-welding, it is extruded through the lower mold cavity 22 to produce qualified reinforced pipe assemblies.

[0058] In addition to this embodiment, when the number of ribs of the reinforced pipe assembly that needs to be processed increases, the number of the diverter platforms 14 is increased accordingly to match the production accuracy of the ribs of the reinforced pipe assembly and expand the scope of application.

[0059] For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and deformations made to the implementation methods are still within the protection scope of the present invention.

Claims

1. A die with a flow guide in a back hole, comprising an upper die (1) and a lower die (2) which are detachably connected together, characterized in that: A feed hole group (11) is provided at a middle position on one end surface of the upper mold (1), a feed countersunk hole (12) is provided in the middle of the feed hole group (11), a fifth feed hole (13) is provided on the bottom surface of the feed countersunk hole (12), a diverter table (14) is fixedly connected to the inner wall of the fifth feed hole (13) at a position away from the feed countersunk hole (12), a core group (15) is provided at a middle position on the other end surface of the upper mold (1), a welding chamber (21) is provided on an end surface of the lower mold (2) close to the upper mold (1) at a position corresponding to the feed hole group (11), and a lower mold cavity (22) is provided on the bottom surface of the welding chamber (21) at a position corresponding to the core group (15); The mold core group (15) comprises a first mold core (150) arranged on a surface of the upper mold (1) away from the feed countersunk hole (12) and at a position corresponding to the feed countersunk hole (12); a second mold core (151) is arranged at the end of the diverter table (14) close to the lower mold (2); and a third mold core (152) arranged parallel to the second mold core (151) is arranged at the other end surface of the upper mold (1) close to the second mold core (151); The end of the second mold core (151) is set as a second working belt (1511), the end of the second working belt (1511) is set as a second upper hollow knife (1512), and the end surface of the second working belt (1511) close to the diverter table (14) is set as a second lower hollow knife (1513); The second lower hollow knife (1513) comprises a small hollow knife (1531) arranged on the end surface of the second working belt (1511) close to the diverter table (14) and close to the first mold core (150), and a large hollow knife (1532) arranged on the end surface of the second working belt (1511) close to the diverter table (14) and far from the first mold core (150); The width of the small hollow knife (1531) is smaller than the width of the large hollow knife (1532).

2. A die with flow guide in the back hole according to claim 1, characterized in that: The feed hole group (11) comprises a first feed hole (110) formed on an end surface of the upper mold (1) and located near a feed counterbore (12); On one end surface of the upper mold (1), second feed holes (111) are symmetrically arranged on both sides of the first feed hole (110); Two third feed holes (112) are provided on one end surface of the upper mold (1) near the second feed hole (111), and the two third feed holes (112) are symmetrically arranged with the plane where the center of the feed counterbore (12) and the first feed hole (110) are located as a symmetry plane; Two fourth feed holes (113) are provided on one end surface of the upper mold (1) near the third feed hole (112), and the two fourth feed holes (113) are symmetrically arranged with the plane where the center of the feed counterbore (12) and the first feed hole (110) are located as the symmetry plane.

3. A die with flow guide in the back hole according to claim 2, characterized in that: The first feed hole (110), the second feed hole (111), the third feed hole (112) and the fourth feed hole (113) all pass through the upper mould (1).

4. A die with flow guide in the back hole according to claim 3, characterized in that: The depth of the feed countersunk hole (12) is 8-15 mm.

5. A die with flow guide in the back hole according to claim 4, characterized in that: The diverter platform (14) extends to the other end surface of the upper mold (1) close to the lower mold (2).

6. A die with flow guide in the back hole according to claim 5, characterized in that: The first working belt (1501) is arranged around the end of the first mold core (150), the first upper hollow knife (1502) is arranged at the end of the first working belt (1501), and the end surface of the first working belt (1501) close to the diverter table (14) is arranged as a first lower hollow knife (1503).

7. A die with flow guide in the back hole according to claim 6, characterized in that: The end of the third mold core (152) is arranged as a third working belt (1521), the end of the third working belt (1521) is arranged as a third upper empty knife (1522), and the end surface of the third working belt (1521) close to the diverter table (14) is arranged as a third lower empty knife (1523).

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