A gear rolling device for producing heat-insulating aluminum profiles

Abstract

The present invention provides a rolling gear for producing heat-insulating aluminum profiles, wherein n positive rolling teeth are distributed along the circumferential surface of the rolling gear; m first side rolling teeth and p second side rolling teeth are respectively arranged on both sides of the positive rolling teeth; the rolling gear enables the "O" type heat-insulating aluminum alloy profile to achieve the mechanical properties required by the standard after rolling, can meet the use requirements, and can replace the "I" type heat-insulating aluminum alloy profile with heat-insulating strips, thereby achieving the purpose of saving costs and improving production efficiency, better adapting to market demand, and being conducive to industrial promotion and use.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum profile processing, in particular to a rolling gear for processing heat-insulating aluminum profiles. Background Art

[0002] Thermal insulation aluminum alloy is also called thermal insulation aluminum alloy. It is a thermal insulation aluminum profile that uses non-metallic materials (thermal insulation strips) with low thermal conductivity to separate and tightly connect aluminum alloys into a whole, blocking the heat conduction of aluminum alloys. It can be divided into strip-through thermal insulation aluminum alloy and injection-type thermal insulation aluminum alloy according to different composite methods. Compared with traditional aluminum alloy profiles, thermal insulation aluminum alloy has a qualitative improvement in heat preservation, sound insulation, impact resistance, air tightness, water tightness, etc. It is a new type of building material that meets the requirements of building energy conservation.

[0003] According to the difference in the shape of the thermal insulation strips, the through-strip thermal insulation aluminum alloy profiles can be divided into "I" type thermal insulation strip thermal insulation aluminum alloy profiles, "C" type thermal insulation strip thermal insulation aluminum alloy profiles, and "O" type thermal insulation strip thermal insulation aluminum alloy profiles. The present invention is directed to "I"-type thermal insulation strip thermal insulation aluminum alloy profiles and "O"-type thermal insulation strip thermal insulation aluminum alloy profiles. The "I"-type thermal insulation strip thermal insulation aluminum alloy profile has double notches. After the two notches are hobbed, two "I" thermal insulation strips are used in conjunction with the profile. The "I"-type thermal insulation strip thermal insulation aluminum alloy profile uses a large amount of aluminum, has a complicated process, and wastes raw materials and production auxiliary materials; the "O"-type thermal insulation strip thermal insulation aluminum alloy profile has a single notch, and a single "O"-type thermal insulation strip is used in conjunction with the profile. Compared with the "I"-type thermal insulation strip thermal insulation aluminum alloy profile, the "O"-type thermal insulation strip thermal insulation aluminum alloy profile not only reduces the amount of aluminum used (the middle part of two "I"-type thermal insulation strips), simplifies the production process, and saves materials (including profile original aluminum, profile accessories, equipment accessories, etc.), significantly reduces costs, and has better application prospects.

[0004] However, due to the current gear hobbing technology, the mechanical properties of the "O" type thermal insulation strip thermal insulation aluminum alloy profile do not meet the standards, which seriously affects its market prospects. The reason why the mechanical properties of the "O" type thermal insulation strip thermal insulation aluminum alloy profile do not meet the standards is not only affected by the quality of the aluminum alloy and the "O" thermal insulation strip itself, but also its production operation process and parameter requirements are crucial; and whether the mechanical properties of the "O" type thermal insulation strip thermal insulation aluminum alloy profile can meet the standards, gear hobbing and rolling are the key and difficult points. Whether the mechanical properties of the thermal insulation aluminum alloy profile after rolling meet the standards depends on whether the gear hobbing tooth depth meets the standards. The deeper the gear hobbing, the sharper the tooth tip, the stronger the bite ability to the thermal insulation strip, that is, the better the mechanical properties. According to the standard, the tooth tip width of the toothed structure of the notch of the thermal insulation aluminum alloy profile rubber strip is 0.05-0.10mm, which can ensure that its mechanical properties characteristic value is ≥24N / mm, and can ensure that the product inspection is qualified. However, due to the limitations of gear hobbing design in the industry, the tooth tip width of the profile rubber strip groove tooth structure after gear hobbing is generally greater than 0.30mm, resulting in the mechanical properties test of the aluminum alloy profile insulated using a single "O"-shaped insulation strip not meeting the standards.

[0005] Similarly, when the tooth structure of the profile rubber strip groove does not meet the standard, the mechanical properties of the "I" type insulation strip heat insulation aluminum alloy profile can meet the standard requirements (longitudinal shear, transverse tension and high temperature sustained load transverse tension test meet its characteristic value ≥ 24N / mm) because the "I" type insulation strip heat insulation aluminum alloy profile is equipped with two "I" type insulation strips, and the two "I" type insulation strips share the mechanical performance shear force burden value. However, the "O" type insulation strip heat insulation aluminum alloy profile is equipped with a single insulation strip, and the mechanical properties are not as good as the "I" type insulation strip under the same conditions, and cannot meet the standard requirements. In order to make the mechanical properties of the "O" type heat insulation strip heat insulation aluminum alloy profile meet the standard requirements, it is necessary to improve the tooth depth and sharpness of the heat insulation aluminum alloy profile slot hobbing. If the tooth depth and sharpness of the heat insulation aluminum alloy profile slot hobbing are not improved, in order to improve the bite ability of the profile slot on the heat insulation strip, the rolling plate pressure will inevitably increase during assembly, which will cause the heat insulation aluminum alloy profile to be deformed under stress and affect the profile assembly size accuracy; at the same time, due to the strength and hardness of the hobbing gear material, the profile hobbing tooth tip width cannot be reduced by increasing the hobbing gear tooth density, because the greater the hobbing gear tooth density, the shorter the slot teeth, the shallower the tooth depth rolled out in the heat insulation aluminum alloy profile slot, and the tooth gap is easily blocked, resulting in the inability to produce. Therefore, providing a hobbing gear that can produce "O" type heat insulation strip heat insulation aluminum alloy profiles with standard mechanical properties, not easy to loosen, and long service life is a technical problem that needs to be solved in the industry. Summary of the invention

[0006] The present invention aims to solve the above-described problems. The purpose of the present invention is to provide a rolling gear, so that the tip width of the tooth structure rolled out of the notch of the "O"-shaped thermal insulation strip thermal insulation aluminum alloy profile is reduced to 0.05mm, and at the same time, the mechanical properties of the "O" notch tooth structure made by rolling the aluminum profile using the rolling gear of the present invention meet the standard requirements for the bite ability of the thermal insulation strip.

[0007] n spur gears are distributed along the circumferential surface of the gear roll; m first side gears and p second side gears are arranged on both sides of the spur gear; the first side gears and the second side gears are respectively located on the two end surfaces of the gear roll and are radially distributed with the gear axis as the center.

[0008] The first side gear is inclined toward the positive gear at a position close to the positive gear, and the inclination angle is α; the second side gear is inclined toward the positive gear at a position close to the positive gear, and the inclination angle is β.

[0009] The tooth roots of the first side hobbing teeth, the tooth roots of the second side hobbing teeth and the tooth roots of the forward hobbing teeth are connected; the tooth tops of the first side hobbing teeth, the tooth tops of the second side hobbing teeth and the tooth tops of the forward hobbing teeth are connected.

[0010] The inclination angle α of the first side rolling teeth is equal to the inclination angle β of the second side rolling teeth.

[0011] The first side rolling teeth and the second side rolling teeth are evenly distributed in a radial shape with the gear axis as the center, and the first side rolling teeth and the second side rolling teeth are symmetrically arranged.

[0012] The teeth of the spur gear are straight teeth; the tooth shape of the spur gear is a triangular prism-shaped pointed tooth that is raised in the radial direction, and the tooth shape of the first side gear and the second side gear is a triangular prism-shaped pointed tooth that is connected to the spur gear and forms a certain angle. The n spur gears are evenly distributed along the circumference of the gear; the tooth height of the spur gear is c, the tooth height of the first side gear is b, and the tooth height of the second side gear is d; the tooth width of the spur gear is a; the thickness of the gear is H; wherein, b=c=d=0.8~1.2mm; the diameter of the gear tooth top circle is 75-85mm; the number of teeth of the gear spur gear, the first side gear, and the second side gear is n=m=p=220~235; the tooth width of the spur gear is a=2.8~3.5mm, and the gear thickness is H=5~8mm; the inclination angle α of the first side gear and the inclination angle β of the second side gear are 17~24 degrees.

[0013] A boss is arranged on the rolling gear, and the boss height is z, where z=0-5mm.

[0014] A gear rolling device uses the gear rolling device according to the present invention.

[0015] The rolling gear of the present invention is provided with 225 to 235 spur gears along the circumferential surface of the rolling gear (i.e., the front surface of the gear), and the tooth width of the spur gear of the rolling gear is increased (the front dimension of the rolling gear currently used to produce heat-insulating aluminum alloy profiles is 2.30 mm, and there is no gear hobbing). The spur gear tooth width of the rolling gear of the present invention is 2.80 to 3.50 mm, and the spur gear can be used to pre-tooth the notch. The first side gear and the second side gear are provided on both sides of the rolling gear of the present invention. The tooth shapes of the first side gear and the second side gear are inclined at a certain angle to the spur gear and are connected to both sides of the spur gear. The number of the first side gear and the second side gear is the same as the number of the spur gear. Preferably, the number of teeth of the spur gear of the rolling gear of the present invention is 230, and the number of the first side gear and the second side gear is the same as the number of the spur gear, which is 230. During the process of pre-toothing of the aluminum profile by positive gear rolling, side gear rolling gradually intervenes in the toothing process, further increasing the toothing effect and sharing the shear force burden of positive gear rolling.

[0016] Compared with the old type of rolling gear, the number of teeth of the rolling gear of the present invention is reduced, so that the angle between the rear teeth and the front teeth during the rolling process is increased, and the obtuse angle formed by the tooth tip of each tooth is larger. Therefore, the tooth tip angle of the tooth structure formed by the rolling gear extruding the aluminum profile on the aluminum profile is larger. Since the front of the rolling gear is toothed and the tooth width is increased, the tooth tip width of the tooth structure extruded on the aluminum profile is smaller. In the process of rolling, the aluminum material is first broken by the positive rolling gear, and then the side rolling gear extrude the aluminum material more deeply. The aluminum material located between two adjacent side rolling teeth is deformed under the action of the extrusion force, and the deformation direction is the side rolling gear root direction of the rolling gear that is not blocked, that is, the tooth tip direction of the tooth structure corresponding to the insulation strip notch of the insulation aluminum alloy profile, so that the tooth shape at the insulation strip notch of the extruded insulation aluminum alloy profile is more complete, the tooth tip width is smaller, the tooth tip is sharper, and it is easier for the tooth tip of the aluminum profile insulation notch to penetrate the insulation rubber strip and tightly bite with the insulation rubber strip, thereby improving the mechanical properties of the insulation aluminum alloy profile.

[0017] At present, due to the limitation of gear hobbing design in the industry, after gear hobbing, the tooth tip width of the tooth structure of the profile insulation strip slot is generally greater than 0.30mm. After assembling the insulation strip, the tooth tip of the slot is not sharp, resulting in a weak bite ability of the tooth structure of the slot to the insulation strip. In the assembly process of a single "O"-shaped insulation strip, in order to improve the mechanical properties as much as possible, the rolling force applied by the rolling plate needs to be increased during assembly (more than 500Kg force) and repeated rolling, resulting in the phenomenon of "closing" deformation of the rolled aluminum profile. Even so, its mechanical properties are still not ideal. The present invention optimizes the structure of the gear hobbing. When the gear hobbing is used to open the teeth of the rolled aluminum profile slot, the pre-opening is first performed, and on this basis, the further deepening and widening is performed, so that the tooth tip width of the tooth structure rolled out on the aluminum profile insulation strip slot is reduced to 0.05mm. After assembly, the bite ability of the tooth structure of the slot to the insulation strip is significantly enhanced, so that the mechanical properties of the "O"-shaped insulation strip insulation aluminum alloy profile meet the standard requirements, which is a major breakthrough in the industry. At the same time, the rolling force of the rolling plate during the assembly process (350-500Kg force) can be appropriately reduced, and there is no need for repeated rolling. While ensuring that its mechanical properties meet the standards, the "closing" phenomenon can be avoided and production efficiency can be improved.

[0018] In summary, the hobbing gear of the present invention enables the "O" type thermal insulation aluminum alloy profile to achieve the mechanical properties required by the standard after hobbing, can meet the use requirements, and can replace the "I" type thermal insulation strip thermal insulation aluminum alloy profile, thereby achieving the purpose of saving costs and improving production efficiency, better adapting to market demand, and facilitating industrial promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the appearance of a rolling gear for producing heat-insulating aluminum profiles of the present invention;

[0021] Figure 2 is a cross-sectional view of a rolling gear used for producing heat-insulating aluminum profiles according to the present invention;

[0022] Figure 3 It is an enlarged view of the forward hobbing and side hobbing of the hobbing gear used for producing the heat-insulating aluminum profile of the present invention;

[0023] Figure 4 is a front view of a rolling gear for producing heat-insulating aluminum profiles according to the present invention;

[0024] Figure 5 is a side view of a rolling gear for producing heat-insulating aluminum profiles according to the present invention;

[0025] Figure 6It is a schematic diagram of the toothing effect of a rolling gear for producing heat-insulating aluminum profiles of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0027] The rolling gear for producing heat-insulating aluminum profiles provided by the present invention will be explained in detail below by way of specific embodiments.

[0028] like Figures 1 to 5 As shown, a hobbing gear for producing heat-insulating aluminum profiles has n spur hobbing teeth 20 distributed along the circumferential surface; m first side hobbing teeth 30 and p second side hobbing teeth 40 are respectively arranged on both sides of the spur hobbing teeth 20.

[0029] The first side rolling teeth 30 and the second side rolling teeth 40 are respectively located on two end surfaces of the rolling gear and are radially distributed with the gear axis as the center.

[0030] The first side hob 30 is inclined toward the spur hob 20 at a position close to the spur hob 20 , and the inclination angle is α. The second side hob 40 is inclined toward the spur hob 20 at a position close to the spur hob 20 , and the inclination angle is β.

[0031] The tooth roots of the first side hobbing gear 30 , the tooth roots of the second side hobbing gear 40 and the tooth roots of the spur hobbing gear 20 are connected; the tooth tops of the first side hobbing gear 30 , the tooth tops of the second side hobbing gear 40 and the tooth tops of the spur hobbing gear 20 are connected.

[0032] The inclination angle α of the first side hobbing 30 is equal to the inclination angle β of the second side hobbing 40 .

[0033] The first side rolling teeth 30 and the second side rolling teeth 40 are evenly distributed in a radial shape with the gear axis as the center, and the first side rolling teeth 30 and the second side rolling teeth 40 are symmetrically arranged.

[0034] Wherein, n=m=p=220 to 235. n=225, 227, 228, 230, 232, 234 or 235 can be selected.

[0035] Preferably, n=m=p. Under this condition, the toothed structure rolled on the aluminum profile is more beautiful, and the toothed structures rolled on both sides of the thermal insulation notch of the aluminum profile are symmetrical, with the tooth tips facing each other, which is more conducive to biting the rubber strip. Most preferably, n=m=p=230. The existing rolling gear is currently equipped with 240 rolling teeth. The present invention reduces the number of teeth by 10 teeth and changes it to 230 teeth. The reduction in the number of teeth increases the angle between the rear teeth and the front teeth during the rolling process, making the obtuse angle formed by the tooth tip of each tooth larger. Therefore, the tooth tip angle of the toothed structure formed by the rolling gear extruding the aluminum profile on the aluminum profile is larger. Since the front of the rolling gear is toothed and the tooth width is increased, the tooth tip width of the toothed structure extruded on the aluminum profile is smaller. It is easier for the rolling teeth of the aluminum profile to penetrate the thermal insulation rubber strip and tightly bite with the thermal insulation rubber strip, thereby improving the mechanical properties of the rubber strip.

[0036] The teeth of the spur gear hob 20 are straight teeth; the tooth shape of the spur gear hob 20 is a triangular prism-shaped pointed tooth that is raised in the radial direction, and the tooth shape of the first side gear hob 30 and the second side gear hob 40 is a triangular prism-shaped pointed tooth that is connected to the spur gear hob 20 and forms a certain angle.

[0037] The widths of the tooth tips of the spur gear 20, the first side gear 30 and the second side gear 40 are the same. The tooth height of the spur gear 20 is c, the tooth height of the first side gear 30 is b, and the tooth height of the second side gear 40 is d; the tooth width of the spur gear 20 is a.

[0038] like Figure 3 The tooth height of the spur gear hobbing 20 is c, where c = 0.80 to 1.20 mm. For example, in actual operation, c = 0.80 mm, 0.90 mm, 1.00 mm, 1.10 mm, 1.20 mm can be selected.

[0039] Preferably, c=b=d. This arrangement can make the rolling gear symmetrical in structure. During the rolling process, the first side rolling gear and the second side rolling gear bear the same extrusion force, and the lateral pressure offsets each other, thereby increasing the service life of the rolling gear. At the same time, the toothed structure rolled out on the aluminum profile insulation groove can be made symmetrical, the bite force on the insulation strip is more uniform, and the quality of the insulation aluminum profile is improved.

[0040] The tooth width a of the positive hobbing gear 20 is 2.8 to 3.5 mm, the thickness of the hobbing gear is H = 5 to 8 mm, the inclination angle α of the first side hobbing gear and the inclination angle β of the second side hobbing gear are 17 to 24 degrees, preferably, α = β = 20 degrees. The tooth width a of the positive hobbing gear 20 is greater than the width of the notch of the aluminum profile insulation groove, and because the positive hobbing gear is a straight tooth, during the rolling and opening process, the positive hobbing gear first contacts the aluminum materials on both sides of the aluminum profile insulation groove, and applies a vertical downward force to the aluminum materials of the notch, breaking the aluminum materials of the notch to form a pre-opening tooth. During the pre-opening process, the aluminum profile notch is subjected to less pressure on both sides. At the same time, due to the effect of the pre-opening tooth, when the hobbing gears on both sides further open the aluminum profile notch, the extrusion force on both sides of the aluminum profile notch can be greatly reduced, thereby reducing the deformation of the profile. In particular, the present invention relates to a rolling gear with a wider front profile, that is, the width of the positive rolling gear part, compared with the rolling gear in the prior art. If the front profile dimension is less than 2.30 mm, it is easy to cause the positive rolling gear 20 to be directly pressed to the bottom of the aluminum profile notch during rolling, thereby causing problems such as deformation of the aluminum profile. Therefore, the front dimension is set to 2.80-3.50 mm. For example, in actual operation, the width a of the positive rolling gear 20 of the rolling gear can be selected to be 2.80 mm, 3.00 mm, 3.20 mm, 3.40 mm, or 3.50 mm.

[0041] In order to make the tooth structure of the heat-insulating notch of the aluminum profile more beautiful after gear hobbing, n spur gears 20 are evenly distributed along the circumferential surface of the gear hobbing in this embodiment.

[0042] As mentioned above, Figure 3 As shown, since the first side gear 30 and the second side gear 40 are set with inclination angles α and β, the first side gear 30 extends from the end surface of the gear roll toward the spur gear 20 and is connected to the spur gear 20; the second side gear 40 extends from the other end surface of the gear roll toward the spur gear 20 and is connected to the spur gear 20. The first side gear 30 and the second side gear 40 are connected to the spur gear 20 to form a "J"-shaped profile that is narrow in the front and wide in the back. Under this condition, the first side gear 30 and the second side gear 40 extend outward from the connection with the spur gear 20 and gradually widen. When the gear rolls the notch of the aluminum profile, the first side gear and the second side gear continue to apply shear and extrusion at the pre-tooth opening of the spur gear, which effectively enhances the tooth opening effect, with deeper opening, more complete tooth shape, and smaller tooth tip size. Figure 6 As shown, after gear hobbing, a tooth-like structure is formed at the notch of the aluminum profile insulation strip, and the width of the tooth tip of the tooth-like structure is f. As can be seen from the figure, the deeper the tooth opening, the more complete the tooth shape, and the smaller the width f of the tooth tip of the tooth-like structure. The tooth tip width f of the tooth structure formed by gear hobbing on the aluminum profile according to the present invention can reach 0.05-0.10 mm;

[0043] The diameter of the tooth top circle of the roller gear is 75-85 mm. For example, in actual operation, the diameter of the tooth top circle of the roller gear can be selected to be 75 mm, 77 mm, 79 mm, 80 mm, 82 mm, 84 mm or 85 mm.

[0044] In order to increase the strength of the rolling gear, a boss can be provided on the rolling gear. The boss height is z, z = 0 ~ 5.00mm. In actual operation, 1.00mm, 2.00mm, 3.00mm, 4.00mm, 5.00mm can be selected.

[0045] It should be noted that the first side rolling teeth 30 and the second side rolling teeth 40 of the present invention are symmetrically arranged on both sides of the rolling gear. The first side rolling teeth 30 and the second side rolling teeth 40 are blocked and cannot be shown in the same figure.

[0046] A gear rolling device using the above-mentioned gear rolling device for producing heat-insulating aluminum profiles includes an operating table, a gear rolling device arranged on the operating table, a vertical positioning wheel connected to the axis of the gear rolling device for adjusting the horizontal position of the gear rolling device, a lifting frame connected to the gear rolling device for adjusting the height position of the gear rolling device, an adjustment handle connected to the vertical positioning wheel and the lifting frame respectively, and a control button connected to the gear rolling device.

[0047] In this article, the term "comprises", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that an article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of more restrictions, the elements defined by the sentence "comprising..." do not exclude the presence of other identical elements in the article or device comprising the elements.

[0048] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention. The present invention is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A rolling gear for producing heat-insulating aluminum profiles, characterized in that: n spur gears (20) are distributed along the circumferential surface of the gear roll; m first side gears (30) and p second side gears (40) are respectively arranged on both sides of the spur gears (20); The first side rolling teeth (30) and the second side rolling teeth (40) are respectively located on two end surfaces of the rolling gear and are radially distributed with the gear axis as the center; The first side rolling gear (30) is inclined toward the spur rolling gear (20) at a position close to the spur rolling gear (20), and the inclination angle is α; the second side rolling gear (40) is inclined toward the spur rolling gear (20) at a position close to the spur rolling gear (20), and the inclination angle is β; The n spur gears (20) are evenly distributed along the circumferential surface of the gear roll; the tooth height of the spur gear (20) is c, the tooth height of the first side gear roll (30) is b, and the tooth height of the second side gear roll (40) is d; the tooth width of the spur gear (20) is a; and the thickness of the gear roll is H; Among them, b=c=d=0.8~1.2mm; The diameter of the top circle of the rolling gear is 75-85mm; The number of teeth of the spur gear hobbing (20), the first side gear hobbing (30), and the second side gear hobbing (40) is n=m=p=220-235; The tooth width a of the spur gear hobbing (20) is 2.8-3.5 mm, and the thickness H of the gear hobbing is 5-8 mm; The inclination angle α of the first side rolling tooth (30) and the inclination angle β of the second side rolling tooth are both 17 to 24 degrees.

2. The rolling gear for producing heat-insulating aluminum profiles as claimed in claim 1, characterized in that: The tooth roots of the first side rolling teeth (30), the tooth roots of the second side rolling teeth (40) and the tooth roots of the spur rolling teeth (20) are connected; the tooth tops of the first side rolling teeth (30), the tooth tops of the second side rolling teeth (40) and the tooth tops of the spur rolling teeth (20) are connected.

3. The rolling gear for producing heat-insulating aluminum profiles as claimed in claim 2, characterized in that: The inclination angle α of the first side rolling tooth (30) is equal to the inclination angle β of the second side rolling tooth (40).

4. The rolling gear for producing heat-insulating aluminum profiles as claimed in claim 3, characterized in that: The first side rolling teeth (30) and the second side rolling teeth (40) are evenly distributed in a radial shape with the gear axis as the center, and the first side rolling teeth (30) and the second side rolling teeth (40) are symmetrically arranged.

5. The rolling gear for producing heat-insulating aluminum profiles according to claim 1, characterized in that: The teeth of the spur gear hobbing (20) are straight teeth; the tooth shape of the spur gear hobbing (20) is a triangular prism-shaped pointed tooth that is raised in the radial direction, and the tooth shapes of the first side gear hobbing (30) and the second side gear hobbing (40) are triangular prism-shaped pointed teeth that are connected to the spur gear hobbing (20) and form a certain angle.

6. The rolling gear for producing heat-insulating aluminum profiles according to claim 1, characterized in that: The rolling gear is provided with a boss, the height of the boss is z, and z can be 1.00mm, 2.00mm, 3.00mm, 4.00mm or 5.00mm.

7. A gear rolling device, characterized in that: It comprises a rolling gear as described in any one of claims 1-6.

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