Wide and long flat plate profile hot extrusion die

Abstract

The wide and long flat plate profile hot extrusion die comprises a first die body, the first die body is provided with a flow dividing cavity, and at least one middle flow dividing hole formed in the middle of the flow dividing cavity and side flow dividing holes distributed in the left side and the right side of the middle flow dividing hole are formed in the flow dividing cavity; the upper portion and the lower portion of an inlet of the flow dividing cavity are each provided with a blocking face corresponding to the middle flow dividing hole, the left side and the right side of each blocking face are each provided with a flow guiding face extending towards the corresponding side flow dividing hole, and the blocking faces block materials on the upper portion and the lower portion of the inlet of the flow dividing cavity. And the materials at the upper part and the lower part are forced to flow towards the side flow dividing holes in the two sides through the flow guiding surfaces on the left side and the right side of the blocking surface, so that the side flow dividing holes can obtain sufficient material supply, the materials can be uniformly distributed in the die holes, and the occurrence of arching deformation of the wide and long flat plate profile is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of profile extrusion dies, in particular to a wide and long flat plate profile hot extrusion die. Background Art

[0002] Wide and long flat aluminum profiles are relatively wide and the circumscribed circle of the entire profile is large. For machines whose extrusion barrel is not large enough, extrusion molding is difficult and the profile plane often has serious arching. Usually, the aluminum in the middle is retained in the middle die hole due to small resistance, and the die holes on both sides are far away from the center and have large resistance. In addition, the main hole of the first mold is expanded, the channel of the die hole is long, and the resistance is also large, resulting in the edge material cannot be supplied sufficiently, while the middle material runs fast, resulting in the extruded material not being formed. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a hot extrusion die for a wide and long flat plate profile, which can reduce the occurrence of arching and deformation of the wide and long flat plate profile.

[0004] According to the first aspect of the present invention, a hot extrusion die for wide and long flat plate profiles comprises a first die body, wherein the first die body is provided with a diversion cavity, wherein the diversion cavity is provided with at least one middle diversion hole arranged in the middle of the diversion cavity and side diversion holes distributed on the left and right sides of the middle diversion hole; the upper and lower parts of the inlet of the diversion cavity are respectively provided with blocking surfaces corresponding to the middle diversion hole, and the left and right sides of the blocking surface are respectively provided with guide surfaces extending toward the side diversion holes.

[0005] The hot extrusion die for wide and long flat plate profiles according to the embodiments of the present invention has at least the following beneficial effects: when in use, the entrance of the diversion chamber is connected to the ingot tube containing materials, the materials in the ingot tube are squeezed into the diversion chamber, the blocking surface blocks the upper and lower materials at the entrance of the diversion chamber, and the guide surfaces on the left and right sides of the blocking surface force the upper and lower materials to flow to the side diversion holes on both sides, so that the side diversion holes can be fully supplied with materials, so that the materials can be more evenly distributed in the die hole, thereby reducing the occurrence of arching and deformation of the wide and long flat plate profiles.

[0006] According to some embodiments of the present invention, the blocking surface is a planar structure and is perpendicular to the material conveying direction of the diversion cavity.

[0007] According to some embodiments of the present invention, the blocking surface is flush with the front end surface of the first mold body.

[0008] According to some embodiments of the present invention, the blocking surfaces are respectively arranged above and below the inlet of the middle diversion hole.

[0009] According to some embodiments of the present invention, a middle shunt bridge capable of separating the middle shunt holes is disposed at the center of the shunt cavity, and the blocking surface is located above and below the middle shunt bridge.

[0010] According to some embodiments of the present invention, a width D of the blocking surface in the left-right direction is greater than a width d of a main body portion of the middle shunt bridge in the left-right direction.

[0011] According to some embodiments of the present invention, it also includes a second mold body, which is provided with a welding chamber connected to the diversion cavity and a molding cavity connected to the welding chamber, and the rear side of the first mold body is provided with upper and lower diversion wings extending in the left and right directions, and the upper and lower diversion wings are inserted into the molding cavity and have gaps with the upper wall and the lower wall of the molding cavity.

[0012] According to some embodiments of the present invention, the upper and lower diverter wings are provided in plurality and are spaced apart in the left-right direction.

[0013] According to some embodiments of the present invention, the second mold body is further included, and the second mold body is provided with a welding chamber connected to the diversion chamber and a molding cavity connected to the welding chamber, the width of the blocking surface in the left and right directions is D, the width of the molding cavity in the left and right directions is A, D=A*K, K=1 / 15~1 / 5.

[0014] According to some embodiments of the present invention, the guide surface is connected to the outer edge of the inlet of the diversion cavity via a curved transition surface.

[0015] According to some embodiments of the present invention, an angle a between the guide surface and the blocking surface is 2° to 12°. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a structural schematic diagram of the front part of the first mold body according to an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the front structure of the first mold body according to an embodiment of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the rear part of the first mold body according to an embodiment of the present invention;

[0020] Figure 4 for Figure 2 Schematic diagram of the cross section of AA;

[0021] Figure 5It is a structural schematic diagram of the front part of the second mold body according to an embodiment of the present invention;

[0022] Figure 6 It is a schematic cross-sectional view of the connection between the first mold body and the second mold body according to an embodiment of the present invention.

[0023] Reference numerals:

[0024] The first mold body 100, the diverter cavity 101, the middle diverter hole 102, the side diverter hole 103, the blocking surface 104, the guide surface 105, the curved transition surface 106, the front end surface 107, the middle diverter bridge 110, and the upper and lower diverter wings 120;

[0025] The second mold body 200, the welding chamber 201, the molding cavity 202, the upper wall 202a, and the lower wall 202b. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Reference below Figures 1 to 6 A hot extrusion die for a wide and long flat plate profile according to an embodiment of the present invention is described.

[0031] like Figure 1 , Figure 2 , Figure 4As shown, a hot extrusion die for wide and long flat plate profiles according to an embodiment of the present invention comprises a first die body 100, wherein the first die body 100 is provided with a diversion cavity 101, wherein the diversion cavity 101 is provided with at least one middle diversion hole 102 arranged in the middle of the diversion cavity 101 and side diversion holes 103 distributed on the left and right sides of the middle diversion hole 102; the upper and lower parts of the entrance of the diversion cavity 101 are respectively provided with blocking surfaces 104 corresponding to the middle diversion hole 102, and the left and right sides of the blocking surface 104 are respectively provided with guide surfaces 105 extending toward the side diversion holes 103.

[0032] When in use, the entrance of the diverter chamber 101 is connected to the ingot tube containing the material, and the material in the ingot tube is squeezed into the diverter chamber 101. The blocking surface 104 blocks the upper and lower materials at the entrance of the diverter chamber 101, and forces the upper and lower materials to flow to the side diverter holes 103 on both sides through the guide surfaces 105 on the left and right sides of the blocking surface 104, so that the side diverter holes 103 can be fully supplied with materials, so that the materials can be more evenly distributed in the die hole, thereby reducing the occurrence of arching and deformation of wide and long flat plate profiles.

[0033] Specifically, the side diverter holes 103 are distributed on the left and right sides of the central diverter hole 102 to form a die hole group distributed in the left and right directions to adapt to the production of wide and long flat plate profiles. No diverter holes are set at the upper and lower parts of the entrance of the diverter chamber 101. By setting the blocking surface 104 at the upper and lower parts of the entrance of the diverter chamber 101, the material is blocked when it flows to the upper and lower parts of the entrance of the diverter chamber 101. The upper material flows to the left, right and downward directions at the blocking surface 104, and the lower material flows to the left, right and upward directions at the blocking surface 104. Since the central diverter hole 102 has been filled with the central material and the guide surface 105 has been used, the material can flow to the center and the left and right sides more evenly, thereby achieving a better effect of uniform material.

[0034] In some embodiments of the present invention, the blocking surface 104 is a planar structure and is perpendicular to the material conveying direction of the diversion chamber 101, which can reduce the upper and lower materials flowing to the middle diversion hole 102 and make more of the upper and lower materials flow to the side diversion holes 103, thereby achieving a better effect of evenly distributing the materials.

[0035] Specifically, the entrance of the diverter chamber 101 generally corresponds to the caliber of the ingot barrel, and is mostly a circular structure. The upper and lower materials at the entrance of the diverter chamber 101 are closer to the middle diverter hole 102. Therefore, in the traditional structure, more materials will flow to the middle diverter hole 102. In the patent of the present invention, the blocking surface 104 is a planar structure and is perpendicular to the material conveying direction of the diverter chamber 101. It can better block the upper and lower materials from directly flowing into the middle diverter hole 102, and is more convenient and simple to process than other shapes of blocking structures (such as inclined surfaces, curved surfaces, etc.).

[0036] Furthermore, in actual mold design, it is only necessary to reasonably design the width of the blocking surface 104 to obtain a better diversion effect on the upper and lower materials, thereby making the mold structure simple and convenient for production and processing.

[0037] like Figures 1 to 4 As shown, in some embodiments of the present invention, the blocking surface 104 is flush with the front end surface 107 of the first mold body 100, so that the mold structure is simpler and the production and processing are more convenient.

[0038] Specifically, the blocking surface 104 is flush with the front end surface 107 of the first mold body 100. In actual mold processing, the blocking surface 104 can be directly formed without processing the front end surface 107 of the first mold body 100 and the blocking surface 104, thereby simplifying the processing steps, making the mold simpler and more convenient to process.

[0039] In some embodiments of the present invention, blocking surfaces 104 are respectively disposed above and below the inlet of the middle diversion hole 102 to directly block materials above and below the inlet of the middle diversion hole 102 .

[0040] like Figure 1 , Figure 2 As shown, in some embodiments of the present invention, a middle diversion bridge 110 capable of separating the middle diversion hole 102 is arranged in the center of the diversion chamber 101, and the blocking surface 104 is located above and below the middle diversion bridge 110 to block and reduce the flow of upper and lower materials to the middle diversion bridge 110.

[0041] like Figure 2 As shown, in some embodiments of the present invention, the width D of the blocking surface 104 in the left-right direction is greater than the width d of the main part of the middle shunt bridge 110 in the left-right direction, so that the blocking surface 104 can cover and shield the top and bottom of the middle shunt bridge 110 to achieve a better blocking effect.

[0042] Specifically, the main part of the middle shunt bridge 110 is the part of the middle shunt bridge 110 that plays the main diversion role, that is, the main part extending in the up and down directions (excluding the part with rounded corners or smooth curved transition at its root). By making the width D of the blocking surface 104 in the left and right directions greater than the width d of the main part of the middle shunt bridge 110 in the left and right directions, it is possible to block materials from entering the position corresponding to the middle shunt bridge 110, thereby covering and shielding the main part of the middle shunt bridge 110.

[0043] In some embodiments of the present invention, the entrance of the diversion chamber 101 is a circular structure, and the blocking surface 104 is located above and below the center of the diversion chamber 101 and close to the upper and lower edges of the opening of the diversion chamber 101 to block the upper and lower materials at the entrance of the diversion chamber 101.

[0044] like Figure 3 , Figure 5 , Figure 6 As shown, in some embodiments of the present invention, a second mold body 200 is further included. The second mold body 200 is provided with a welding chamber 201 connected to the diversion chamber 101 and a molding chamber 202 connected to the welding chamber 201. The rear side of the first mold body 100 is provided with upper and lower diversion wings 120 extending along the left and right directions. The upper and lower diversion wings 120 are inserted into the molding cavity 202 and have gaps with the upper wall 202a and the lower wall 202b of the molding cavity 202. The upper and lower diversion wings 120 allow the material to enter the molding cavity 202 more evenly for molding.

[0045] In some embodiments of the present invention, the distance between the upper and lower diverter wings 120 and the upper wall 202a is equal to the distance between the upper and lower diverter wings 120 and the lower wall 202b, thereby more evenly distributing the materials entering the upper and lower parts of the molding cavity 202 and improving the quality of the profile.

[0046] like Figure 3 , Figure 6 As shown, in some embodiments of the present invention, the upper and lower diverter wings 120 are arranged in plurality and are spaced apart in the left-right direction, and the gaps between adjacent upper and lower diverter wings 120 pass through the top and bottom of the upper and lower diverter wings 120, thereby further evenly distributing the materials above and below the upper and lower diverter wings 120.

[0047] Specifically, when the materials above and below the upper and lower diverter wings 120 are unevenly distributed, a pressure difference will occur. The gap between the adjacent upper and lower diverter wings 120 can allow the materials with higher pressure to flow to the materials with lower pressure, thereby achieving a better effect of evenly distributing the materials.

[0048] like Figure 2 , Figure 5 , Figure 6 As shown, in some embodiments of the present invention, a second mold body 200 is further included. The second mold body 200 is provided with a welding chamber 201 connected to the diversion chamber 101 and a molding chamber 202 connected to the welding chamber 201. The width of the blocking surface 104 in the left and right directions is D, and the width of the molding cavity 202 in the left and right directions is A. D=A*K, K=1 / 15~1 / 5, that is, the width D of the blocking surface 104 is set to 1 / 15 to 1 / 5 of the width A of the molding cavity 202 in the left and right directions, thereby achieving a better diversion effect, and the quality of the obtained profile is higher and the flatness is better.

[0049] Specifically, when the width D of the blocking surface 104 is set to 1 / 15, 1 / 12, 1 / 10, 1 / 17, or 1 / 5 of the width A of the molding cavity 202 in the left-right direction, a better uniform material effect can be achieved, and the flatness of the resulting wide and long flat plate profile meets the design requirements.

[0050] In some embodiments of the present invention, a second mold body 200 is further included. The second mold body 200 is provided with a welding chamber 201 connected to the diversion chamber 101 and a molding chamber 202 connected to the welding chamber 201. The width of the blocking surface 104 in the left-right direction is D, the width of the molding cavity 202 in the left-right direction is A, and the height of the molding cavity 202 in the up-down direction is h. The width D of the blocking surface 104 in the left-right direction is proportional to the width A of the molding cavity 202 in the left-right direction, and inversely proportional to the height h of the molding cavity 202 in the up-down direction, that is, the larger the height h, the smaller the width D, and the larger the width A, the larger the width D. According to the specific length and width design of the cross-section of the wide and long flat plate profile, the width D of the blocking surface 104 in the left-right direction is designed to obtain a wide and long flat plate profile with higher quality.

[0051] In some embodiments of the present invention, D = [(A / h)*k] mm, k is the correction coefficient, k = 0.15-0.3, and a blocking surface 104 of a more suitable width can be obtained, so that the flatness of the obtained wide and long flat plate profile meets the design requirements.

[0052] like Figure 1 , Figure 2 As shown, in some embodiments of the present invention, the guide surface 105 is connected to the outer edge of the inlet of the diversion cavity 101 through a curved transition surface 106 to reduce the resistance of the material during extrusion and improve the smoothness.

[0053] like Figure 4 As shown, in some embodiments of the present invention, the included angle a between the guide surface 105 and the blocking surface 104 is 2° to 12°, so as to achieve a better material guiding effect.

[0054] In some embodiments of the present invention, the guide surface 105 is a curved surface. Figure 4 In the cross-sectional state, the angle a between the tangent line at any point of the guide surface 105 and the blocking surface 104 is 2° to 12°, so as to maintain a good guide effect.

[0055] It can be understood that in some embodiments of the present invention, the guide surface 105 is an inclined plane, and the angle a between the guide surface 105 and the blocking surface 104 is 2° to 12°, which can also achieve a better material guiding effect.

[0056] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A hot extrusion die for wide and long flat plate profiles, characterized in that: include: a first mold body (100), The first mold body (100) is provided with a flow diversion cavity (101), and the flow diversion cavity (101) is provided with at least one middle flow diversion hole (102) located in the middle of the flow diversion cavity (101) and side flow diversion holes (103) distributed on the left and right sides of the middle flow diversion hole (102); The upper and lower parts of the entrance of the diversion chamber (101) are respectively provided with blocking surfaces (104) corresponding to the middle diversion hole (102), and the left and right sides of the blocking surface (104) are respectively provided with guide surfaces (105) extending towards the side diversion hole (103).

2. The wide and long flat plate profile hot extrusion die according to claim 1, characterized in that: The blocking surface (104) is a planar structure and is perpendicular to the material conveying direction of the diversion chamber (101).

3. The wide and long flat plate profile hot extrusion die according to claim 1, characterized in that: The blocking surface (104) is flush with the front end surface (107) of the first mold body (100).

4. The wide and long flat plate profile hot extrusion die according to claim 1, characterized in that: The blocking surfaces (104) are respectively arranged above and below the entrance of the middle diversion hole (102).

5. The wide and long flat plate profile hot extrusion die according to claim 1, characterized in that: A middle shunt bridge (110) capable of separating the middle shunt hole (102) is arranged at the center of the shunt cavity (101), and the blocking surface (104) is located above and below the middle shunt bridge (110).

6. The wide and long flat plate profile hot extrusion die according to claim 5, characterized in that: The width D of the blocking surface (104) in the left-right direction is greater than the width d of the main part of the middle shunt bridge (110) in the left-right direction.

7. The wide and long flat plate profile hot extrusion die according to claim 1, characterized in that: The invention also comprises a second mold body (200), wherein the second mold body (200) is provided with a welding chamber (201) connected to the diversion chamber (101) and a molding chamber (202) connected to the welding chamber (201); and the rear side of the first mold body (100) is provided with upper and lower diversion wings (120) extending in the left and right directions, and the upper and lower diversion wings (120) are inserted into the molding chamber (202) and have gaps with the upper wall (202a) and the lower wall (202b) of the molding chamber (202).

8. The wide and long flat plate profile hot extrusion die according to claim 7, characterized in that: The upper and lower flow dividing wings (120) are arranged in plurality and are distributed at intervals along the left-right direction.

9. The wide and long flat plate profile hot extrusion die according to claim 1, characterized in that: The invention also comprises a second mold body (200), wherein the second mold body (200) is provided with a welding chamber (201) connected to the diversion chamber (101) and a molding chamber (202) connected to the welding chamber (201), the width of the blocking surface (104) in the left-right direction is D, the width of the molding chamber (202) in the left-right direction is A, D=A*K, K=1 / 15~1 / 5.

10. The wide and long flat plate profile hot extrusion die according to claim 1, characterized in that: The included angle a between the flow guiding surface (105) and the blocking surface (104) is 2° to 12°.

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