Forming die for polygonal curtain wall profile

Abstract

The utility model relates to the technical field of dies of metal profiles, in particular to a forming die of a polygonal curtain wall profile. The forming die of the polygonal curtain wall profile comprises an upper die and a lower die. An outer ring feeding hole and an inner ring feeding hole are formed in the rear end of the upper die; a mold core is arranged in the center of the front end of the upper mold; a mold core working belt is arranged at the front end of the mold core; the lower die is provided with a lower die working belt, a welding chamber is formed in the rear end of the lower die, and a lower die hole is formed in the center of the welding chamber; the mold core working tape and the lower mold working tape form a forming cavity of the polygonal curtain wall profile; two slope-shaped protrusions are arranged on the outer edge of the welding chamber and located on the periphery of the third edge forming part and the periphery of the seventh edge forming part in the forming cavity respectively. And the thickness of the slope-shaped bulge is gradually reduced from the outer edge of the welding chamber to the inside. By adopting the mold, the polygonal curtain wall profile with a good surface effect and a stable structure can be obtained by additionally arranging the slope-shaped bulges on the premise of not changing the external overall dimension of the upper mold.

Description

Technical Field

[0001] The utility model relates to the technical field of metal profile molds, in particular to a forming mold for polygonal curtain wall profiles. Background Art

[0002] Profiles, with their advantages of light weight, high strength, and corrosion resistance, are widely used in vehicles, construction, interior decoration, and other fields, typically formed by die extrusion. Curtain wall profiles, especially polygonal ones with short sides and multiple inflection points, typically have faster extrusion speeds at the short sides than at the other long sides during actual extrusion production.

[0003] Specifically, take a polygonal curtain wall profile as an example. Figure 1 As shown, the polygonal curtain wall profile 3 includes a polygonal profile body 31 and reinforcing ribs 32 disposed within the polygonal profile body 31. The cross-sectional shape of the polygonal profile body 31 is as follows: a first side 311, a second side 312, a third side 313, a fourth side 314, a fifth side 315, a sixth side 316, a seventh side 317, an eighth side 318, and a ninth side 319 are sequentially connected end to end, with each side bending in the same clockwise or counterclockwise direction. The leading end of the first side 311 and the trailing end of the ninth side 319 are both open, facing each other and connected by a transition edge. Slots 33 are provided on the outer edges of the two open ends. The third side 313 is shorter than the adjacent second side 312 and fourth side 314. The seventh side 317 is shorter than the adjacent sixth side 316 and eighth side 318. When producing this profile using an existing mold, the extrusion speed at the third side 313 and seventh side 317 is faster than the extrusion speed at other parts.

[0004] Among them, the multiple feed holes in the existing mold are often evenly distributed on the upper mold, so that the two feed holes are directly opposite the third side 313 and the seventh side 317, resulting in excessively fast extrusion discharge speeds at the third side 313 and the seventh side 317. If the positions of the two feed holes are adjusted, and the two feed holes are moved away from the mold axis to slow down the extrusion discharge speeds at the third side 313 and the seventh side 317, then the external contour dimensions of the upper mold need to be increased, which will result in excessive mold costs. Moreover, after the external contour dimensions of the upper mold are increased, it may be impossible to install it on the existing extrusion molding machine. If the diameters of the two feed holes are adjusted, the raw materials in the two feed holes cannot meet the raw material requirements of the adjacent sides and inflection points of the third side 313 and the seventh side 317, thereby affecting the surface quality and structural stability of the profile after discharge.

[0005] In summary, the existing polygonal curtain wall profile mold structure cannot achieve consistent discharge speeds at various forming parts in the forming cavity while ensuring profile quality. Utility Model Content

[0006] The utility model aims to provide a forming die for polygonal curtain wall profiles, which has the characteristic of uniform discharge speed of each forming part in the forming cavity.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] A forming die for a polygonal curtain wall profile, used for producing the polygonal curtain wall profile, the polygonal curtain wall profile comprising a polygonal profile body and reinforcing ribs disposed within the polygonal profile body, the cross-sectional shape of the polygonal profile body being as follows: a first side, a second side, a third side, a fourth side, a fifth side, a sixth side, a seventh side, an eighth side, and a ninth side connected end to end in sequence, each side being bent in the same clockwise or counterclockwise direction, the leading end of the first side and the trailing end of the ninth side being open ends, the two open ends being opposite and connected by a transition edge, the outer edges of the two open ends being respectively provided with a slot, the third side being shorter than the adjacent second and fourth sides, and the seventh side being shorter than the adjacent sixth and eighth sides;

[0009] The forming mold includes an upper mold and a lower mold; the rear end of the upper mold is provided with an outer ring feed hole and an inner ring feed hole; a mold core is provided in the center of the front end of the upper mold, and a mold core working belt is provided at the front end of the mold core; the lower mold is provided with a lower mold working belt, and a welding chamber is provided at the rear end of the lower mold, and a lower mold hole is provided in the center of the welding chamber, and the mold core is suitable for cooperating with the lower mold hole to form the polygonal curtain wall profile; the mold core working belt and the lower mold working belt form a forming cavity of the polygonal curtain wall profile, and the reinforcement forming part of the forming cavity is located on the mold core; the outer edge of the welding chamber is provided with two sloped protrusions, and the two sloped protrusions are respectively located on the periphery of the third side forming part and the seventh side forming part in the forming cavity; the thickness of the sloped protrusion gradually decreases from the outer edge of the welding chamber to the inside. By adding sloped protrusions to adjust the discharge speed of the third side forming part and the seventh side forming part in the forming cavity, the discharge speed of the third side forming part and the seventh side forming part in the forming cavity is ensured to be consistent with the discharge speed of other parts without changing the external contour dimensions of the upper mold.

[0010] Furthermore, the upper die is provided with an expandable guide port, which is located at the rear end of the upper die and behind the outer and inner ring feed holes. The expandable guide port is connected to the outer and inner ring feed holes, respectively. The expandable guide port is tapered, with its inner diameter gradually increasing from rear to front. This solution allows the raw material bar to smoothly enter the outer and inner ring feed holes.

[0011] Furthermore, the distance between the front end of the expanded guide port and the rear end surface of the upper die is 35 mm to 45 mm. The above solution is adopted to ensure that the raw material bar enters the outer ring feed hole and the inner ring feed hole evenly.

[0012] Furthermore, the polygonal curtain wall profile is bilaterally symmetrical; the outer ring feed holes are multiple and symmetrically distributed around the inner ring feed hole; and the inner ring feed hole is fixed with multiple diversion bridges, which divide the inner cavity of the inner ring feed hole into multiple diversion holes, and the multiple diversion holes are symmetrically distributed. Using this solution, the raw materials in the inner ring feed hole are diverted and distributed to different diversion holes, which can reduce the feeding pressure.

[0013] Furthermore, there are eight outer ring feed holes and seven diversion holes.

[0014] Furthermore, the diameter of the outer ring feed hole is larger than the diameter of the diversion hole. The above solution is adopted to ensure that the discharge speed of the entire profile is consistent.

[0015] Furthermore, a channel is provided at the rear end of the mold core and is connected to the inner ring feed hole, and the inner ring feed hole is connected to the welding chamber through the channel. By adopting the above solution, the inner ring feed hole and the welding chamber are connected.

[0016] Furthermore, a weight-reducing hole is provided at the front center of the mold core. By adopting the above solution, the weight of the molding mold can be reduced.

[0017] Furthermore, a flow-blocking boss is provided in the welding chamber, and the flow-blocking boss is located at the outer edge of the slot forming portion of the forming cavity. The above solution assists the forming of the slot, ensuring that the discharge speed of the slot forming portion in the forming cavity is consistent with the discharge speed of other parts.

[0018] Furthermore, the angle between the slope of the sloped protrusion and the front end surface of the welding chamber is 15° to 5°. With the above solution, the discharge speed of the third and seventh side forming parts in the forming cavity can be adjusted.

[0019] The technical solution provided by the utility model may have the following beneficial effects:

[0020] By adding sloped protrusions to adjust the discharge speed of the third and seventh side forming parts in the forming cavity, the discharge speed of the third and seventh side forming parts in the forming cavity is ensured to be consistent with the discharge speed of other parts without changing the external contour dimensions of the upper mold, thereby obtaining a polygonal curtain wall profile with good surface effect and stable structure.

[0021] By adding a flow-blocking boss, the slot is assisted in forming, ensuring that the discharge speed of the slot forming part in the forming cavity is consistent with the discharge speed of other parts;

[0022] An extended guide port is provided to allow the raw material bar to enter the feed hole of the upper die. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional schematic diagram of the polygonal curtain wall profile in the present invention;

[0024] Figure 2 This is a structural diagram of the forming die in the utility model (1);

[0025] Figure 3 This is a structural diagram of the forming die in the utility model (II);

[0026] Figure 4 It is a structural diagram of the middle and lower molds of the utility model;

[0027] Figure 5 It is a structural diagram of the upper die in the utility model;

[0028] Figure 6 This is a schematic diagram of the position projection distribution of the outer ring feed hole, diversion hole and forming cavity in the utility model.

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the upper mold in the utility model.

[0030] The accompanying drawings are as follows:

[0031] 1. Upper mold; 11. Outer ring feed hole; 12. Inner ring feed hole; 121. Diverter hole; 13. Diverter bridge; 14. Extended guide port; 15. Mold core; 16. Mold core working belt;

[0032] 101, polygonal profile body forming part; 1011, third side forming part; 1012, seventh side forming part; 102, reinforcement rib forming part; 103, slot forming part;

[0033] 2. Lower die; 21. Welding chamber; 22. Lower die hole; 23. Lower die working zone; 24. Slope protrusion; 25. Flow-blocking boss;

[0034] 3. Polygonal curtain wall profile; 31. Polygonal profile body; 311. First side; 312. Second side; 313. Third side; 314. Fourth side; 315. Fifth side; 316. Sixth side; 317. Seventh side; 318. Eighth side; 319. Ninth side; 32. Reinforcement rib; 33. Slot. DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail. Examples of the embodiments 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish between the described features, without distinction of order or importance.

[0037] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] The utility model provides a forming die for a polygonal curtain wall profile, which is used for producing the polygonal curtain wall profile 3.

[0040] See also Figure 1As shown, the polygonal curtain wall profile 3 includes a polygonal profile body 31 and a reinforcing rib 32 disposed within the polygonal profile body 31. The cross-sectional shape of the polygonal profile body 31 is as follows: the first side 311, the second side 312, the third side 313, the fourth side 314, the fifth side 315, the sixth side 316, the seventh side 317, the eighth side 318, and the ninth side 319 are connected end to end in sequence, and the sides are bent in the same clockwise or counterclockwise direction. The leading end of the first side 311 and the trailing end of the ninth side 319 are both open ends, and the two open ends are opposite and connected by a transition edge. The outer edges of the two open ends are respectively provided with a slot 33. The third side 313 is shorter than the adjacent second side 312 and fourth side 314. The seventh side 317 is shorter than the adjacent sixth side 316 and eighth side 318.

[0041] In this embodiment, the polygonal curtain wall profile 3 is made of aluminum.

[0042] In this embodiment, the polygonal curtain wall profile 3 is bilaterally symmetrical. The angles between the third side 313 and the second side 312 are obtuse, as are the angles between the third side 313 and the fourth side 314. The angles between the seventh side 317 and the sixth side 316 are obtuse, as are the angles between the seventh side 317 and the eighth side 318. Four reinforcing ribs 32 are provided.

[0043] See also Figures 2 and 3 As shown, the forming mold includes an upper mold 1 and a lower mold 2.

[0044] The rear end of the upper mold 1 is provided with feed holes. The feed holes include an outer ring feed hole 11 and an inner ring feed hole 12. A mold core 15 is provided at the center of the front end of the upper mold 1. A mold core working belt 16 is provided at the front end of the mold core 15. There are multiple outer ring feed holes 11, which are symmetrically distributed around the outer periphery of the inner ring feed hole 12. The inner ring feed hole 12 is also symmetrical, and multiple diversion bridges 13 are fixed inside the inner ring feed hole 12. Figure 5 As shown, the diverter bridge 13 divides the inner cavity of the inner ring feed hole 12 into a plurality of diverter holes 121. The diverter holes 121 are symmetrically distributed. The rear end of the mold core 15 is provided with a channel connected to the inner ring feed hole 12.

[0045] The lower mold 2 is provided with a lower mold working belt 23. A welding chamber 21 is provided at the rear end of the lower mold 2. A lower mold hole 22 is provided in the center of the welding chamber 21. The mold core 15 is adapted to cooperate with the lower mold hole 22 to form the polygonal curtain wall profile 3. The plurality of diversion holes 121 of the inner ring feed hole 12 are connected to the welding chamber 21 through a channel. The mold core working belt 16 and the lower mold working belt 23 form a molding cavity for the polygonal curtain wall profile 3. The rear end of the molding cavity is used for feeding, and the front end of the molding cavity is used for discharging. The rib forming portion 102 of the molding cavity is located on the mold core 15. Two sloped protrusions 24 are provided on the outer edge of the welding chamber 21. Please refer to Figure 4As shown, the two sloped protrusions 24 are respectively located at the periphery of the third side forming portion 1011 and the seventh side forming portion 1012 in the forming cavity. The thickness of the sloped protrusions 24 gradually decreases from the outer edge of the welding chamber 21 to the inside.

[0046] The plurality of outer ring feed holes 11 are adapted to be connected to the polygonal profile body forming portion 101 or the slot forming portion 103 of the forming cavity, respectively, so as to feed material to the polygonal profile body forming portion 101 or the slot forming portion 103 of the forming cavity. The plurality of diversion holes 121 are adapted to be connected to the reinforcement rib forming portion 102 of the forming cavity, respectively, so as to feed material to the reinforcement rib forming portion 102 of the forming cavity.

[0047] The utility model provides a forming die for polygonal curtain wall profiles. The outer ring feed hole 11 and the inner ring feed hole 12 divide the raw materials so that the raw materials are dispersed into different feed holes, which can reduce the feed pressure and reduce the load of the profile extrusion molding machine. Figure 6 As shown, the sloped protrusion 24 is used to adjust the discharge speed of the third and seventh side forming portions 1011 and 1012 in the forming cavity. Without changing the external dimensions of the upper mold 1 and lower mold 2, the sloped protrusion 24 prevents the discharge speed of the third and seventh side forming portions 1011 and 1012 in the forming cavity from being too fast, thereby ensuring a consistent discharge speed across the entire profile, improving surface quality, and increasing structural stability.

[0048] In this embodiment, there are eight outer ring feed holes 11 and seven outer ring diversion holes 121 .

[0049] In this embodiment, the diameter of the outer ring feed hole 11 is larger than the diameter of the diverter hole 121 .

[0050] In this embodiment, the two slope-shaped protrusions 24 are symmetrically distributed.

[0051] Furthermore, the angle between the slope of the sloped protrusion 24 and the front end surface of the welding chamber 21 is 15° to 5°. Preferably, the angle between the slope of the sloped protrusion 24 and the front end surface of the welding chamber 21 is 10°.

[0052] For further information, see Figure 4 As shown, a flow-blocking projection 25 is provided within the welding chamber 21. The flow-blocking projection 25 is located at the outer edge of the slot forming portion 103 of the forming cavity. The flow-blocking projection 25 assists in forming the slot 33, ensuring that the discharge speed of the slot forming portion 103 in the forming cavity is consistent with the discharge speed of other parts.

[0053] Furthermore, in order to reduce the weight of the forming mold, a weight-reducing hole (not shown in the figure) is opened at the front center of the mold core 15.

[0054] Further, in order to facilitate the entry of raw material bars into the feed hole, please refer to Figure 7 As shown, the upper mold 1 is also provided with an expanded flow guide 14. This expanded flow guide 14 is located at the rear end of the upper mold 1, behind the outer ring feed hole 11 and the inner ring feed hole 12. The expanded flow guide 14 is connected to the outer ring feed hole 11 and the inner ring feed hole 12, respectively. The expanded flow guide 14 is tapered, with its inner diameter gradually increasing from back to front.

[0055] In this embodiment, the distance between the front end of the expanded air guide opening 14 and the rear end surface of the upper mold 1 is 35 mm to 45 mm. Preferably, the distance between the front end of the expanded air guide opening 14 and the rear end surface of the upper mold 1 is 40 mm.

[0056] The working principle of this embodiment is as follows:

[0057] The raw material bar enters the outer ring feed hole 11 and the inner ring feed hole 12 through the expanded guide port 14;

[0058] The raw material in the outer ring feed hole 11 enters the forming cavity through the welding chamber 21, and the raw material in the inner ring feed hole 12 enters the forming cavity through the channel; the raw material in the forming cavity is discharged through the forming cavity and then formed into a profile.

[0059] Among them, part of the raw material in the outer ring feed hole 11 is blocked by the sloped protrusion 24, and its speed is reduced to enter the welding chamber 21 and the third side forming part 1011 and the seventh side forming part 1012 in the forming cavity. Since the third side forming part 1011 and the seventh side forming part 1012 in the forming cavity are smaller in size, under the premise of the same feeding speed, the discharge speed of the third side forming part 1011 and the seventh side forming part 1012 in the forming cavity will be faster. In this embodiment, by adding the sloped protrusion 24, the feeding speed of the third side forming part 1011 and the seventh side forming part 1012 in the forming cavity is reduced, and the discharge speed of the third side forming part 1011 and the seventh side forming part 1012 in the forming cavity is adjusted to ensure that the discharge speed of the third side forming part 1011 and the seventh side forming part 1012 in the forming cavity is consistent with the discharge speed of other parts.

[0060] Without changing the external dimensions of the upper die, this utility model adjusts the discharge speed of the third and seventh side forming areas within the forming cavity by adding sloped protrusions, ensuring that the discharge speeds of these areas are consistent with those of the other parts within the forming cavity, resulting in a polygonal curtain wall profile with a good surface finish and stable structure. The addition of a flow-blocking boss assists in the shaping of the slot, ensuring that the discharge speed of the slot forming area within the forming cavity is consistent with that of the other parts. An extended flow guide is provided to facilitate the entry of the raw material bar into the feed hole of the upper die.

[0061] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A forming mold for a polygonal curtain wall profile, used for producing a polygonal curtain wall profile, the polygonal curtain wall profile comprising a polygonal profile body and reinforcing ribs arranged inside the polygonal profile body, the cross-sectional shape of the polygonal profile body being: a first side, a second side, a third side, a fourth side, a fifth side, a sixth side, a seventh side, an eighth side, and a ninth side connected end to end in sequence, each side being bent in the same clockwise direction or the same counterclockwise direction, the first end of the first side and the tail end of the ninth side being open ends, the two open ends being opposite and connected by a transition edge, the outer edges of the two open ends being respectively provided with a card groove, the third side being shorter than the adjacent second and fourth sides, the seventh side being shorter than the adjacent sixth and eighth sides, characterized in that: The forming mold includes an upper mold and a lower mold; the rear end of the upper mold is provided with an outer ring feed hole and an inner ring feed hole; a mold core is provided in the center of the front end of the upper mold, and a mold core working belt is provided at the front end of the mold core; the lower mold is provided with a lower mold working belt, and a welding chamber is provided at the rear end of the lower mold, and a lower mold hole is provided in the center of the welding chamber, and the mold core is suitable for cooperating with the lower mold hole to form the polygonal curtain wall profile; the mold core working belt and the lower mold working belt form a forming cavity of the polygonal curtain wall profile, and the reinforcement forming part of the forming cavity is located on the mold core; the outer edge of the welding chamber is provided with two sloped protrusions, and the two sloped protrusions are respectively located on the periphery of the third side forming part and the seventh side forming part in the forming cavity; the thickness of the sloped protrusion gradually decreases from the outer edge of the welding chamber to the inside.

2. The molding die according to claim 1, wherein: An extended guide port is also provided on the upper mold; the extended guide port is opened at the rear end of the upper mold and is located on the rear side of the outer ring feed hole and the inner ring feed hole; the extended guide port is respectively connected to the outer ring feed hole and the inner ring feed hole; the extended guide port is conical, and its inner diameter gradually increases from back to front.

3. The forming mold according to claim 2, characterized in that: The distance between the front end of the expanded guide port and the rear end surface of the upper mold is 35 mm to 45 mm.

4. The molding die according to claim 1, wherein: The polygonal curtain wall profile is bilaterally symmetrical; there are a plurality of outer ring feed holes, which are bilaterally symmetrically distributed around the periphery of the inner ring feed hole; a plurality of diversion bridges are fixed in the inner ring feed hole, and the diversion bridges divide the inner cavity of the inner ring feed hole into a plurality of diversion holes, and the plurality of diversion holes are bilaterally symmetrically distributed.

5. The forming die according to claim 4, wherein: There are eight outer ring feed holes and seven diversion holes.

6. The forming die according to claim 4, wherein: The diameter of the outer ring feed hole is larger than the diameter of the diversion hole.

7. The molding die according to claim 1, wherein: A passage communicating with the inner ring feed hole is opened at the rear end of the mold core, and the inner ring feed hole is communicated with the welding chamber through the passage.

8. The molding die according to claim 1, wherein: A weight-reducing hole is provided at the front center of the mold core.

9. The molding die according to claim 1, wherein: A flow-blocking boss is provided in the welding chamber, and the flow-blocking boss is located at the outer edge of the slot forming portion of the forming cavity.

10. The molding die according to claim 1, wherein: The angle between the slope surface of the slope-shaped protrusion and the front end surface of the welding chamber is 15° to 5°.

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