Flange structure of extrusion die head

Abstract

The utility model discloses a flange structure of an extrusion die head, which comprises a flange main body, at least one first material extrusion channel is arranged on the flange main body, and the size of the cross section of the first material extrusion channel is gradually increased along the material extrusion direction; a first extrusion inlet and a first extrusion outlet which are communicated with the first extrusion channel are respectively formed in the front side surface and the rear side surface of the flange main body; a first acute angle is arranged at the position, away from the middle vertical face of the discharging end of the extrusion equipment, of the first extrusion inlet, an inlet arc edge is arranged at the first acute angle, a second acute angle is arranged at the position, corresponding to the first acute angle, of the first extrusion outlet, an outlet arc edge is arranged at the second acute angle, and the radius of the outlet arc edge is larger than that of the inlet arc edge. The distance between the outlet arc edge and the middle vertical face of the discharging end of the extrusion equipment is larger than that between the inlet arc edge and the middle vertical face of the discharging end of the extrusion equipment. The flange structure of the extrusion die head provided by the utility model is not easy to sinter in the extrusion process, so that the quality of a formed angular line is improved.

Description

Technical Field

[0001] The utility model relates to the field of angle line production, in particular to a flange structure of an extrusion die head. Background Art

[0002] Corner lines are lines used for decoration and separation of space, and are commonly seen in interior decoration and architecture. Corner lines are usually located at the corners of walls or at the junction of ceilings and walls. Their main function is to beautify the corner area and enhance the interior decoration effect. Corner lines can be made of wood, plaster, metal or other materials. There are multiple through holes on the corner line, which can be used for decoration or to allow plaster to pass through when plaster is applied at the corner of the wall, thereby increasing the stability of the connection between the plaster and the corner line.

[0003] Corner lines are mainly formed by material extrusion. After the material is extruded from the discharge end of the extrusion equipment, it passes through the flange, the diverter plate and the gap adjustment plate in sequence through a single or multiple extrusion channels. Finally, the material solidifies and forms the corresponding corner line. When the material is transported in the extrusion channel in the flange, although the flange extrusion channel mainly plays a guiding role, its cross-sectional shape is related to the number and arrangement of subsequent corner line channels. The cross-sectional shape of the flange extrusion channel inevitably has sharp angles. The cross-section of the traditional flange extrusion channel is basically strip-shaped. Although its outlet cross-sectional area is larger than the inlet cross-sectional area, it is mainly reflected in the length of the cross-section, and the width of the outlet and inlet of the extrusion material is basically the same, and the radius of the transition arc surface made at the acute angle of the outlet and inlet is also basically the same. When the acute angle is close to the neutral plane of the discharge end of the extrusion equipment, it will not significantly affect the flow rate, and will not affect the subsequent product quality of this part of the angle line. However, when the acute angle is far away from the neutral plane of the discharge end of the extrusion equipment, it will cause the material to flow along the flange inlet to the outlet at a significantly slower speed. The retention of the material will cause burning of this part, resulting in unqualified quality of the final angle line product. Utility Model Content

[0004] The utility model aims to provide a flange structure of an extrusion die head, which is not easy to be sintered inside when extruding materials, thereby improving the quality of the angle line after forming.

[0005] To achieve the above-mentioned purpose, the utility model provides a flange structure of an extrusion die head, including a flange body for installation at the discharge end of an extrusion device, the flange body being provided with at least one first extrusion channel, the cross-sectional size of the first extrusion channel gradually increasing along the extrusion direction; the front and rear sides of the flange body are respectively provided with a first extrusion inlet and a first extrusion outlet connected to the first extrusion channel; a first acute angle is provided at a position of the first extrusion inlet away from the neutral plane of the discharge end of the extrusion device, an inlet arc edge is provided at the first acute angle, a second acute angle is provided at a position of the first extrusion outlet corresponding to the first acute angle, an outlet arc edge is provided at the second acute angle, the radius of the outlet arc edge is greater than the radius of the inlet arc edge, and the distance between the outlet arc edge and the neutral plane of the discharge end of the extrusion device is greater than the distance between the inlet arc edge and the neutral plane of the discharge end of the extrusion device.

[0006] As a further improvement of the present invention, the edge of the first extrusion inlet is provided with an inlet bottom edge, an inlet arc edge and a first inlet outer edge connected in sequence, and the first acute angle is formed between the inlet bottom edge and the first inlet outer edge; the edge of the first extrusion outlet is provided with an outlet bottom edge, an outlet arc edge and a first outlet outer edge connected in sequence, and the second acute angle is formed between the outlet bottom edge and the first outlet outer edge; the distance between the first outlet outer edge and the neutral plane of the extrusion device discharge end is greater than the distance between the first inlet outer edge and the neutral plane of the extrusion device discharge end; the distance between the outlet bottom edge and the center of the first extrusion channel is greater than the distance between the inlet bottom edge and the center of the first extrusion channel.

[0007] As a further improvement of the present invention, the first extrusion inlet includes an inlet top edge, and the first extrusion outlet includes an outlet top edge; a first obtuse angle is formed between the inlet top edge and the outer side edge of the first inlet, a second obtuse angle is formed between the outlet top edge and the outer side edge of the first outlet, and the inlet top edge and the outlet top edge are flush front and back along the extrusion direction.

[0008] As a further improvement of the utility model, the flange body is provided with two first extrusion channels arranged symmetrically, the first extrusion inlet also includes a first inlet inner side edge, the first inlet inner side edge is located between the inlet top edge and the inlet bottom edge; the first extrusion outlet also includes a first outlet inner side edge, the first outlet inner side edge is located between the outlet top edge and the outlet bottom edge; the first inlet inner side edge and the first outlet inner side edge are flush front and back along the extrusion direction.

[0009] As a further improvement of the utility model, a second extrusion channel is also provided on the flange body, and the second extrusion channel is located between the two first extrusion channels. The front and rear ends of the second extrusion channel are respectively provided with a second extrusion inlet and a second extrusion outlet, and the edge of the second extrusion inlet is provided with a second inlet side edge and a second inlet bottom edge, and a third acute angle is formed between the second inlet side edge and the second inlet bottom edge; the edge of the second extrusion outlet is provided with a second outlet side edge and a second outlet bottom edge, and a fourth acute angle is formed between the second outlet side edge and the second outlet bottom edge; the second inlet side edge and the second outlet side edge are both flush front and back along the extrusion direction, and the distance between the second outlet bottom edge and the center of the second extrusion channel is greater than the distance between the second inlet bottom edge and the center of the second extrusion channel.

[0010] Beneficial Effects

[0011] Compared with the prior art, the flange structure of the extrusion die head of the utility model has the following advantages:

[0012] 1. In the first extrusion channel, since the radius of the outlet arc edge is greater than the radius of the inlet arc edge, and the distance between the outlet arc edge and the neutral plane of the discharge end of the extrusion equipment is greater than the distance between the inlet arc edge and the neutral plane of the discharge end of the extrusion equipment, even if the material passes through the first acute angle and the second acute angle away from the neutral plane of the discharge end of the extrusion equipment in the first extrusion channel, the flow rate of the material will not be greatly slowed down, avoiding material retention and burning problems, thereby ensuring that the subsequent corner line still has high quality after forming, and the product qualification rate is high.

[0013] 2. Since the distance between the outer edge of the first outlet and the neutral plane of the discharge end of the extrusion equipment is greater than the distance between the outer edge of the first inlet and the neutral plane of the discharge end of the extrusion equipment, and the distance between the bottom edge of the outlet and the center of the first extrusion channel is greater than the distance between the bottom edge of the inlet and the center of the first extrusion channel, it is beneficial to make the radius of the outlet arc edge larger than the radius of the inlet arc edge, and the transition is smoother, further preventing the problem of burning.

[0014] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a top cross-sectional view of the flange structure of the extrusion die head in Example 1 in the use state;

[0017] Figure 2 It is a front view of the flange structure of the extrusion die head in Example 1;

[0018] Figure 3 It is a rear view of the flange structure of the extrusion die head in Example 1;

[0019] Figure 4 It is a front view of the flange structure of the extrusion die head in Example 2;

[0020] Figure 5 It is a rear view of the flange structure of the extrusion die head in Example 2;

[0021] Figure 6 It is a top cross-sectional view of the flange structure of the extrusion die head in Example 3;

[0022] Figure 7 It is a front view of the flange structure of the extrusion die head in Example 3;

[0023] Figure 8 This is a rear view of the flange structure of the extrusion die in Example 3. DETAILED DESCRIPTION

[0024] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0025] Example 1

[0026] The specific implementation of the utility model is as follows Figures 1 to 3 As shown, a flange structure of an extrusion die head includes a flange body 1 for installation at the discharge end of an extrusion device 5, and at least one first extrusion channel 4 is provided on the flange body 1. The first extrusion channel 4 corresponds to the discharge end of the extrusion device 5, and the cross-sectional size of the first extrusion channel 4 gradually increases along the extrusion direction. The front and rear sides of the flange body 1 are respectively provided with a first extrusion inlet 2 and a first extrusion outlet 3 connected to the first extrusion channel 4. A first acute angle is provided on the first extrusion inlet 2 at a position away from the neutral plane 11 of the discharge end of the extrusion device, and an inlet arc edge 25 is provided at the first acute angle. A second acute angle is provided on the first extrusion outlet 3 at a position corresponding to the first acute angle, and an outlet arc edge 35 is provided at the second acute angle. The radius of the outlet arc edge 35 is greater than the radius of the inlet arc edge 25, and the distance between the outlet arc edge 35 and the neutral plane 11 of the discharge end of the extrusion device is greater than the distance between the inlet arc edge 25 and the neutral plane 11 of the discharge end of the extrusion device.

[0027] The edge of the first extrusion inlet 2 is provided with an inlet bottom edge 24, an inlet arc edge 25 and a first inlet outer side edge 23 connected in sequence, and a first acute angle is formed between the inlet bottom edge 24 and the first inlet outer side edge 23. The edge of the first extrusion outlet 3 is provided with an outlet bottom edge 34, an outlet arc edge 35 and a first outlet outer side edge 33 connected in sequence, and a second acute angle is formed between the outlet bottom edge 34 and the first outlet outer side edge 33. The distance between the first outlet outer side edge 33 and the neutral plane 11 of the discharge end of the extrusion device is greater than the distance between the first inlet outer side edge 23 and the neutral plane 11 of the discharge end of the extrusion device, and the distance between the outlet bottom edge 34 and the center of the first extrusion channel 4 is greater than the distance between the inlet bottom edge 24 and the center of the first extrusion channel 4, as shown in FIG. Figure 2 , 3 shown.

[0028] The first extrusion inlet 2 and the first extrusion outlet 3 are both in the shape of long strips, the inlet bottom edge 24 is parallel to the length direction of the first extrusion inlet 2 , and the outlet bottom edge 34 is parallel to the length direction of the first extrusion outlet 3 .

[0029] The first extrusion inlet 2 includes an inlet top edge 21, and the first extrusion outlet 3 includes an outlet top edge 31. The inlet top edge 21 and the first inlet outer side edge 23 form a first obtuse angle, and the outlet top edge 31 and the first outlet outer side edge 33 form a second obtuse angle. The inlet top edge 21 and the outlet top edge 31 are aligned front and back along the extrusion direction.

[0030] In this embodiment, two first extrusion channels 4 are symmetrically arranged on the flange body 1, and the arrangement direction of the two first extrusion channels 4 is perpendicular to the neutral surface 11 of the discharge end of the extrusion device. The first extrusion inlet 2 also includes a first inlet inner side edge 22, and the first inlet inner side edge 22 is located between the inlet top edge 21 and the inlet bottom edge 24. The first inlet inner side edge 22 is closer to the neutral surface 11 of the discharge end of the extrusion device than the first inlet outer side edge 23. The first extrusion outlet 3 also includes a first outlet inner side edge 32, and the first outlet inner side edge 32 is located between the outlet top edge 31 and the outlet bottom edge 34. The first inlet inner side edge 22 and the first outlet inner side edge 32 are both flush front and back along the extrusion direction.

[0031] After being extruded from the discharge end of the extrusion device 5, the material respectively enters the two first extrusion channels 4 on the flange body 1. Even if the material passes through the first acute angle and the second acute angle away from the neutral surface 11 of the discharge end of the extrusion device in the first extrusion channel 4, since the radius of the outlet arc edge 35 is greater than the radius of the inlet arc edge 25, and the distance between the outlet arc edge 35 and the neutral surface 11 of the discharge end of the extrusion device is greater than the distance between the inlet arc edge 25 and the neutral surface 11 of the discharge end of the extrusion device, the flow rate of the material at this location will not be significantly slowed down, thereby avoiding the problem of burning of the material due to the retention of the material, thereby ensuring that the subsequent angle line still has a high quality after forming, and the product qualification rate is high.

[0032] Example 2

[0033] like Figure 4 and Figure 5 As shown, the difference from Example 1 is that only one first extrusion channel 4 is provided on the flange body 1, and the first extrusion inlet 2 and the first extrusion outlet 3 of the first extrusion channel 4 are symmetrically arranged at both ends, and the first inlet inner side edge 22 and the first outlet inner side edge 32 are not provided, that is, the first extrusion inlet 2 is provided with a first acute angle and an inlet arc edge 25 at both ends, and the first extrusion outlet 3 is provided with a second acute angle and an outlet arc edge 35 at both ends. The length direction of the first extrusion inlet 2 is perpendicular to the neutral plane 11 of the discharge end of the extrusion equipment.

[0034] Example 3

[0035] like Figures 6 to 8 As shown, the difference from Example 1 is that two second extrusion channels 40 are further provided on the flange body 1, and the second extrusion channels 40 are located between the two first extrusion channels 4, and the arrangement direction of the two second extrusion channels 40 and the two first extrusion channels 4 is perpendicular to the neutral plane 11 of the discharge end of the extrusion device. After being extruded from the discharge end of the extrusion device 5, the material enters the two first extrusion channels 4 and the two second extrusion channels 40 on the flange body 1 respectively.

[0036] The second extrusion channel 40 is provided with a second extrusion inlet 20 and a second extrusion outlet 30 at the front and rear ends, respectively. The second extrusion inlet 20 is provided with a second inlet side edge 220, a second inlet bottom edge 240, and a second inlet top edge 210 on the edge. The second inlet side edge 220 and the second inlet bottom edge 240 form a third acute angle, and the second inlet top edge 210 and the second inlet side edge 220 form a third obtuse angle. The second extrusion outlet 30 is provided with a second outlet side edge 320, a second outlet bottom edge 340, and a second outlet top edge 310 on the edge. The second outlet side edge 320 and the second outlet bottom edge 340 form a fourth acute angle, and the second outlet top edge 310 and the second outlet side edge 320 form a fourth obtuse angle. The second inlet side 220 and the second outlet side 320 are aligned front to back in the extrusion direction, the second inlet top 210 and the second outlet top 310 are aligned front to back in the extrusion direction, and the distance between the second outlet bottom 340 and the center of the second extrusion channel 40 is greater than the distance between the second inlet bottom 240 and the center of the second extrusion channel 40.

[0037] In addition to the above embodiments, the number of the second extrusion channels 40 may also be one or more than three.

[0038] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A flange structure for an extrusion die head, comprising a flange body (1) for installation at a discharge end of an extrusion device (5), characterized in that: At least one first extrusion channel (4) is provided on the flange body (1), and the cross-sectional dimension of the first extrusion channel (4) gradually increases along the extrusion direction; the front and rear side surfaces of the flange body (1) are respectively provided with a first extrusion inlet (2) and a first extrusion outlet (3) connected to the first extrusion channel (4); a first acute angle is provided on the first extrusion inlet (2) at a position away from the neutral plane (11) of the discharge end of the extrusion device, and an inlet arc edge (25) is provided at the first acute angle; a second acute angle is provided on the first extrusion outlet (3) at a position corresponding to the first acute angle, and an outlet arc edge (35) is provided at the second acute angle; the radius of the outlet arc edge (35) is greater than the radius of the inlet arc edge (25), and the distance between the outlet arc edge (35) and the neutral plane (11) of the discharge end of the extrusion device is greater than the distance between the inlet arc edge (25) and the neutral plane (11) of the discharge end of the extrusion device.

2. The flange structure of an extrusion die head according to claim 1, characterized in that: The edge of the first extrusion inlet (2) is provided with an inlet bottom edge (24), an inlet arc edge (25) and a first inlet outer edge (23) which are connected in sequence, and the inlet bottom edge (24) and the first inlet outer edge (23) form the first acute angle; the edge of the first extrusion outlet (3) is provided with an outlet bottom edge (34), an outlet arc edge (35) and a first outlet outer edge (33) which are connected in sequence, and the outlet bottom edge (34) and the first outlet outer edge (33) form the second acute angle; the distance between the first outlet outer edge (33) and the neutral plane (11) of the discharge end of the extrusion device is greater than the distance between the first inlet outer edge (23) and the neutral plane (11) of the discharge end of the extrusion device; the distance between the outlet bottom edge (34) and the center of the first extrusion channel (4) is greater than the distance between the inlet bottom edge (24) and the center of the first extrusion channel (4).

3. The flange structure of an extrusion die head according to claim 2, characterized in that: The first extrusion inlet (2) includes an inlet top edge (21), and the first extrusion outlet (3) includes an outlet top edge (31); a first obtuse angle is formed between the inlet top edge (21) and the first inlet outer edge (23), a second obtuse angle is formed between the outlet top edge (31) and the first outlet outer edge (33), and the inlet top edge (21) and the outlet top edge (31) are aligned front to back along the extrusion direction.

4. The flange structure of an extrusion die head according to claim 2 or 3, characterized in that: The flange body (1) is provided with two first extrusion channels (4) arranged symmetrically, the first extrusion inlet (2) further comprising a first inlet inner side edge (22), the first inlet inner side edge (22) being located between the inlet top edge (21) and the inlet bottom edge (24); the first extrusion outlet (3) further comprising a first outlet inner side edge (32), the first outlet inner side edge (32) being located between the outlet top edge (31) and the outlet bottom edge (34); the first inlet inner side edge (22) and the first outlet inner side edge (32) are aligned front and back along the extrusion direction.

5. The flange structure of an extrusion die head according to claim 4, characterized in that: The flange body (1) is also provided with a second extrusion channel (40), the second extrusion channel (40) is located between the two first extrusion channels (4), the front and rear ends of the second extrusion channel (40) are respectively provided with a second extrusion inlet (20) and a second extrusion outlet (30), the edge of the second extrusion inlet (20) is provided with a second inlet side edge (220) and a second inlet bottom edge (240), and the second inlet side edge (220) and the second inlet bottom edge (240) form a third acute angle; the edge of the second extrusion outlet (30) is provided with a second outlet side edge (320) and a second outlet bottom edge (340), and the second outlet side edge (320) and the second outlet bottom edge (340) form a fourth acute angle; the second inlet side edge (220) and the second outlet side edge (320) are aligned front and back along the extrusion direction, and the distance between the second outlet bottom edge (340) and the center of the second extrusion channel (40) is greater than the distance between the second inlet bottom edge (240) and the center of the second extrusion channel (40).

6. The flange structure of an extrusion die head according to claim 2, characterized in that: The first extrusion inlet (2) and the first extrusion outlet (3) are both in the shape of long strips, the bottom edge (24) of the inlet is parallel to the length direction of the first extrusion inlet (2), and the bottom edge (34) of the outlet is parallel to the length direction of the first extrusion outlet (3).

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