Multi-hole and multi-bridge type shunting combination die for decorative material profile

Abstract

The utility model discloses a multi-hole multi-bridge type split-flow combination die for a decorative material profile, which comprises an upper die and a lower die, the lower die is provided with a through die hole, and the middle part of the die hole is a cross beam section forming part; the cross beam section forming part is a transverse strip-shaped hole, and transverse flow stopping belts protruding towards the feeding side are arranged on the two sides of the strip shape of the cross beam section forming part. A middle flow dividing hole is formed in the middle of the upper die, outer side flow dividing holes are formed in the two sides of the middle flow dividing hole, a middle flow dividing bridge is formed between the middle flow dividing hole and the outer side flow dividing holes, and the shape of the middle flow dividing bridge on the discharging side of the upper die is gradually narrowed. And the middle shunting bridge is in the shape of a longitudinal strip-shaped plate at the tail end of the discharging side of the upper die, and is positioned in the middle of the cross beam section forming part. According to the scheme, the problem of unsatisfactory forming such as wave generation of the cross beam section in the middle of the profile is effectively avoided, the high stability of the extrusion die is ensured, the easily deviated part is protected, the flat die part at multiple bridge positions is slowly reduced, the forming quality is improved, and the service life of the die is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of extrusion dies, and in particular relates to a multi-hole multi-bridge type flow-dividing combined die for decorative material profiles. Background Art

[0002] Aluminum profiles have complex and diverse cross-sections and are usually formed using an extrusion process. For example, there is a type of decorative profile such as Figure 3 As shown, its cross-sectional shape has a slender cross-beam section in the middle. For this type of profile, the existing extrusion die solution, such as the structure shown in the Chinese utility model patent with authorization announcement number CN214108521U, has a diverter hole in the middle of the upper die to feed the middle cross-beam section. However, for profiles with a long cross-beam section, the cross-beam section is prone to deformation, waving, and unsatisfactory wall thickness due to the excessive flow rate of aluminum material. In addition, Figure 3 In the profile shown, there is also a groove structure at the end of the beam section, and the mold hole used for molding is consistent with the shape of the profile. Therefore, there will be a cantilever structure in the lower mold accordingly. During extrusion molding, the cantilever structure is subjected to greater pressure and is easily deformed, resulting in an unsatisfactory wall thickness of the molded groove structure. It is also easy for the cantilever structure to break and the mold to be scrapped. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a porous and multi-bridge type diversion combination mold for decorative material profiles, so as to solve the problems of easy deformation, wave formation, and wall deviation of the slender cross beam section in the middle of the profile in the existing solution, and to achieve better slowing down of the flow rate of the aluminum material corresponding to the cross beam section, thereby ensuring the molding quality, and having strong stability and being able to increase the life of the mold.

[0004] According to the technical scheme of the utility model, the utility model provides a porous multi-bridge diversion combination mold for decorative material profiles, including an upper mold and a lower mold, the lower mold is provided with a through mold hole, the middle part of the mold hole is a beam section forming part; the beam section forming part is a transverse strip hole, and transverse flow-blocking belts protruding toward the feeding side are arranged on both sides of the strip of the beam section forming part; a central diversion hole is provided in the middle of the upper mold, and outer diversion holes are provided on both sides of the central diversion hole, a central diversion bridge is formed between the central diversion hole and the outer diversion holes, and the shape of the central diversion bridge on the discharge side of the upper mold is gradually narrowed; the shape of the central diversion bridge at the end of the discharge side of the upper mold is a longitudinal strip plate, and is located in the middle of the beam section forming part.

[0005] Furthermore, the center point of the middle shunt hole is located toward one side of the strip of the beam section forming portion.

[0006] Furthermore, in the direction from the feeding side to the discharging side, the middle diversion hole is an inclined hole which gradually expands toward the other side of the strip-shaped portion of the beam section forming part and the two ends.

[0007] Furthermore, there is a gap between the discharge side of the middle shunt bridge and the feed side of the transverse flow-blocking belt.

[0008] Furthermore, the cross-sectional shape of the produced profile has a strip-shaped beam section in the middle and a groove-shaped portion at one end of the beam section; the lower die is formed with a cantilever at a position corresponding to the groove-shaped portion; the upper die is protrudingly provided with a baffle block on the discharge side, the baffle block is positioned opposite to the cantilever, and the discharge side of the baffle block is in contact with the feed side of the cantilever.

[0009] Furthermore, a groove-shaped portion and a first cavity portion are provided at one end of the cross beam section, and a second cavity portion is provided at the other end of the cross beam section; and a mold core corresponding to the first cavity portion and the second cavity portion is protrudingly provided on the discharge side of the upper mold.

[0010] Furthermore, the two outer diversion holes are internally provided with a sinking bridge, and the feeding side of the sinking bridge is lower than the feeding side of the upper mold; the sinking bridge divides each outer diversion hole into three secondary diversion holes; the secondary diversion holes are located around the groove-shaped portion and the first cavity portion, and around the second cavity portion.

[0011] Furthermore, a raised longitudinal flow-blocking strip is provided on the feeding side of the lower die, and the longitudinal flow-blocking strip is located outside the groove-shaped portion.

[0012] Furthermore, on one side of the cross beam section forming portion deviating from the center point of the middle diverter hole, both ends of the transverse flow blocking belt have longitudinal bending sections, which respectively match the contours of the mold hole portions located at both ends of the cross beam section forming portion.

[0013] Furthermore, the lower die is provided with a recessed welding chamber on the feeding side, and the lower die is provided with a primary empty knife groove, a secondary empty knife groove and a tertiary empty knife groove in sequence around the die hole on the discharging side.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0015] The utility model discloses a porous multi-bridge flow-dividing combined die for decorative material profiles, which effectively slows down the flow rate of the aluminum material in the middle by projecting two middle flow-dividing bridges and two transverse flow-blocking strips that intersect vertically and horizontally, thereby ensuring the welding forming process and avoiding undesirable forming problems such as waving in the crossbeam section in the middle of the profile. At the same time, a protruding flow-blocking block is arranged on the upper die to be connected with the cantilever of the lower die, thereby avoiding a large pressure of the aluminum material on the cantilever. The overall porous multi-bridge structure mode ensures that the extrusion die has strong stability and protects the easily deflected parts. The multi-bridge positions slow down the flat die part and make it less likely to deviate from the wall, thereby improving the forming quality and increasing the life of the die. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the planar structure according to an embodiment of the utility model.

[0017] Figure 2 It is a schematic cross-sectional structural diagram according to an embodiment of the utility model.

[0018] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional shape of a decorative material profile produced by the illustrated embodiment.

[0019] Figure 4 yes Figure 1 A schematic diagram of the partial structure of the lower mold in a rear view of the illustrated embodiment.

[0020] Description of reference numerals in the accompanying drawings:

[0021] 1. Upper die; 2. Lower die; 3. Die hole; 4. Beam section forming part; 5. Transverse flow-blocking strip; 6. Middle diverter hole; 7. Outer diverter hole; 8. Middle diverter bridge; 9. Cantilever; 10. Baffle block; 11. Mold core; 12. Sinking bridge; 13. Secondary diverter hole; 14. Longitudinal flow-blocking strip; 15. Welding chamber; 16. Primary empty knife groove; 17. Secondary empty knife groove; 18. Tertiary empty knife groove; 19. Longitudinal bending section; 101. Beam section; 102. Groove-shaped part; 103. First cavity part; 104. Second cavity part. DETAILED DESCRIPTION

[0022] The utility model provides a multi-hole multi-bridge flow-dividing combined mold for decorative material profiles, which solves the problems of easy deformation, wave formation, and wall deviation of the slender cross beam section in the middle of the profile in the existing solution, and achieves better slowing down of the flow rate of the aluminum material corresponding to the cross beam section, thereby ensuring the molding quality, and has strong stability and can increase the life of the mold.

[0023] See also Figure 1 , Figure 2 , a porous multi-bridge type diversion combination mold for decorative material profiles according to one embodiment of the utility model comprises an upper mold 1 and a lower mold 2 that are matched and butt-jointed. The lower mold 2 is provided with a through mold hole 3, the shape of which is consistent with the outer contour of the produced profile, and the middle of the mold hole 3 is a cross-beam section forming part 4. The cross-beam section forming part 4 is a transverse strip hole, and a transverse flow-blocking strip 5 protruding toward the feeding side is provided on both the upper and lower sides of the strip of the cross-beam section forming part 4. The transverse flow-blocking strip 5 is close to the mold hole 3, and there is a small distance between the inner side of the transverse flow-blocking strip 5 and the mold hole 3, forming a step, which helps to strengthen welding and prevent the flow-blocking strip from affecting the dimensional accuracy of the mold hole.

[0024] A central diversion hole 6 is provided in the middle of the upper die 1, and an outer diversion hole 7 is provided on both sides of the central diversion hole 6, and a central diversion bridge 8 is formed between the two sides of the central diversion hole 6 and the two outer diversion holes 7. The shape of the central diversion bridge 8 on the discharge side of the upper die 1 is gradually narrowed, and the shape of the central diversion bridge 8 at the end of the discharge side of the upper die 1 is a longitudinal strip plate, and is located in the middle of the beam section forming part 4. Therefore, in the middle of the beam section forming part 4, there are two longitudinal structures on the feeding side and two transverse structures on the discharge side, which are crisscrossed and coordinated to slow down the flow rate of the extruded aluminum material. More specifically, it is preferred that there is a gap between the discharge side of the middle diverter bridge 8 and the feed side of the transverse flow-blocking strip 5, so that a portion of the aluminum material needs to flow from the outside to the inside across the transverse flow-blocking strip 5, and another portion of the aluminum material needs to pass through the relatively narrow aforementioned gap from both sides of the middle diverter bridge 8, and then can be gathered into the beam section forming part 4 of the mold hole 3 for forming. Therefore, the problem of excessive flow velocity in the middle part can be effectively solved, and the forming effect of the longer beam section in the middle part of the profile can be ensured.

[0025] See also Figure 1 In some embodiments, the center point of the middle diverter hole 6 is biased toward one side of the strip of the beam section forming part 4, rather than facing the die hole 3; further, in the direction from the feed side to the discharge side, the middle diverter hole 6 is an inclined hole that gradually expands toward the other side of the strip of the beam section forming part 4 and the two ends. Compared with the solution in which the diverter hole directly faces the die hole, this solution is more helpful in controlling the flow rate. Furthermore, on the side of the beam section forming part 4 that is biased toward the center point of the middle diverter hole 6, the two ends of the transverse flow blocking band 5 have longitudinal curved sections 19, and the longitudinal curved sections 19 respectively match the contours of the parts of the die hole 3 located at the two ends of the beam section forming part 4; Figure 1 In the figure, the longitudinal bending section 19 is bent and extended upward, and the center point of the middle diversion hole 6 is also located above the cross beam section forming part 4 of the mold hole 3, so that the longitudinal bending section 19 also forms a barrier to the aluminum material on the left and right sides above the cross beam section forming part 4, ensuring the wall thickness and shape of the parts extending upward on the left and right sides of the profile.

[0026] More specifically, see Figure 3The cross-sectional shape of the profile produced by the porous multi-bridge diversion combination mold for decorative material profiles of the utility model is that there is a strip-shaped cross-beam section 101 in the middle of the cross-sectional shape, and a groove-shaped portion 102 is provided at one end of the cross-beam section 101, and the lower mold 2 is formed with a cantilever 9 at a position corresponding to the groove-shaped portion 102. In the conventional scheme, the cantilever 9 will be subjected to a large extrusion force and is easily deformed or damaged. In this regard, in this scheme, a baffle block 10 is protrudingly provided on the discharge side of the upper mold 1, and the position of the baffle block 10 is directly opposite to the cantilever 9, and the discharge side of the baffle block 10 is in contact with the feed side of the cantilever 9; thereby, the feed side of the cantilever 9 is basically closed, and there is no longer a large amount of aluminum material extruding the cantilever 9, that is, the above-mentioned problems existing in the cantilever structure are avoided.

[0027] Furthermore, a groove-shaped portion 102 and a first cavity portion 103 are provided at one end of the cross beam section 101. The groove-shaped portion 102 and the first cavity portion 103 are longitudinally arranged side by side and are respectively located at the upper and lower sides of the cross beam section 101, and the groove-shaped portion 102 opens upward. A second cavity portion 104 is longitudinally arranged at the other end of the cross beam section 101. The upper die 1 is provided with a mold core 11 corresponding to the first cavity portion 103 and the second cavity portion 104 protrudingly on the discharge side, and the mold core 11 is matched and located in the die hole 3. It can be understood that, according to specific circumstances, the cross section shape of the profile can also have other features, such as the cross beam section 101 has a structure extending upward at a position close to the second cavity portion 104, and the outer ends of the groove-shaped portion 102, the first cavity portion 103, and the second cavity portion 104 have a hook-shaped curved structure, etc. The profile structure with similar basic structure can be applied to this solution.

[0028] Preferably, see Figure 1 The two outer diverter holes 7 are provided with a Y-shaped sinking bridge 12 inside, and the feeding side of the sinking bridge 12 is lower than the feeding side of the upper mold 1. The sinking bridge 12 divides each outer diverter hole 7 into three secondary diverter holes 13, and the positions of the secondary diverter holes 13 are located around the groove portion 102 and the first cavity portion 103, and around the second cavity portion 104, for example, distributed on the left, right and bottom.

[0029] Preferably, a raised longitudinal flow-blocking strip 14 is also provided on the feeding side of the lower mold 2, and the longitudinal flow-blocking strip 14 is located on the outside of the groove-shaped portion 102, thereby reducing the flow rate of the aluminum material on the outside of the cantilever 9 and ensuring the thin-wall forming effect of the outer part of the groove-shaped portion 102.

[0030] See also Figure 2 , Figure 3The lower die 2 is provided with a concave welding chamber 15 on the feeding side, the die hole 3 is located in the welding chamber 15, and the contour of the welding chamber 15 is aligned with the outer contour of the discharging side of the diverter hole. The lower die 2 is provided with a primary empty knife groove 16, a secondary empty knife groove 17 and a tertiary empty knife groove 18 in sequence around the die hole 3 along the discharging direction on the discharging side. The three empty knife grooves are gradually enlarged. This multi-stage empty knife method can avoid the surface extrusion marks and extrusion lines caused by the friction between the profile and the die when discharging.

[0031] In summary, this scheme effectively slows down the flow rate of the aluminum material in the middle by projecting two central diversion bridges and two transverse flow-blocking strips that intersect vertically and horizontally, ensuring the welding forming process, thereby avoiding the problem of undesirable forming such as waving in the crossbeam section in the middle of the profile; at the same time, a protruding flow-block is arranged on the upper die to connect with the cantilever of the lower die to avoid a large pressure of the aluminum material on the cantilever; a multi-porous and multi-bridge structure is formed as a whole, which ensures that the extrusion die has strong stability and protects the easily deflected parts. The multiple bridge positions slow down the flat die part and make it less likely to deviate from the wall, thereby improving the forming quality and increasing the life of the die.

Claims

1. A porous multi-bridge type splitter assembly die for decorative material profiles, comprising an upper die (1) and a lower die (2), characterized in that: The lower die (2) is provided with a through die hole (3), the middle of the die hole (3) is a beam section forming part (4); the beam section forming part (4) is a transverse strip hole, and transverse flow blocking bands (5) protruding toward the feeding side are arranged on both sides of the strip of the beam section forming part (4); a middle diversion hole (6) is provided in the middle of the upper die (1), and outer diversion holes (7) are provided on both sides of the middle diversion hole (6), a middle diversion bridge (8) is formed between the middle diversion hole (6) and the outer diversion holes (7), and the shape of the middle diversion bridge (8) on the discharge side of the upper die (1) is gradually narrowed; the shape of the middle diversion bridge (8) at the end of the discharge side of the upper die (1) is a longitudinal strip plate, and is located in the middle of the beam section forming part (4).

2. The porous multi-bridge flow-dividing combined mold for decorative material profiles according to claim 1, characterized in that: The center point of the middle shunt hole (6) is located toward one side of the strip of the cross beam section forming portion (4).

3. The porous multi-bridge flow-dividing combined mold for decorative material profiles according to claim 2, characterized in that: In the direction from the inlet side to the outlet side, the middle diversion hole (6) is an inclined hole that gradually expands toward the other side of the strip of the cross beam section forming part (4) and the two ends.

4. The porous multi-bridge flow-dividing combined mold for decorative material profiles according to claim 1, characterized in that: There is a gap between the discharge side of the middle shunt bridge (8) and the inlet side of the transverse flow-blocking strip (5).

5. The porous multi-bridge flow-dividing combined mold for decorative material profiles according to any one of claims 1 to 4, characterized in that: The cross-sectional shape of the produced profile has a strip-shaped crossbeam section (101) in the middle, and a groove-shaped portion (102) is provided at one end of the crossbeam section (101); the lower die (2) is formed with a cantilever (9) at a position corresponding to the groove-shaped portion (102); The upper mold (1) is provided with a baffle block (10) protrudingly on the discharge side, the baffle block (10) is located opposite to the cantilever (9), and the discharge side of the baffle block (10) is in contact with the feed side of the cantilever (9).

6. The porous multi-bridge flow-dividing combined mold for decorative material profiles according to claim 5, characterized in that: The groove-shaped portion (102) and the first cavity portion (103) are provided at one end of the cross beam section (101), and the second cavity portion (104) is provided at the other end of the cross beam section (101); the upper mold (1) is provided with a mold core (11) protruding on the discharge side corresponding to the first cavity portion (103) and the second cavity portion (104).

7. The porous multi-bridge flow-dividing combined mold for decorative material profiles according to claim 6, characterized in that: The two outer diverter holes (7) are each provided with a sinking bridge (12) inside, and the feeding side of the sinking bridge (12) is lower than the feeding side of the upper mold (1); the sinking bridge (12) divides each of the outer diverter holes (7) into three secondary diverter holes (13); the secondary diverter holes (13) are located around the groove-shaped portion (102) and the first cavity portion (103), and around the second cavity portion (104).

8. The porous multi-bridge flow-dividing combined mold for decorative material profiles according to claim 5, characterized in that: A raised longitudinal flow-blocking strip (14) is also provided on the feeding side of the lower die (2), and the longitudinal flow-blocking strip (14) is located outside the groove-shaped portion (102).

9. The porous multi-bridge flow-dividing combined mold for decorative material profiles according to claim 2 or 3, characterized in that: On the side of the cross-beam section forming portion (4) that is biased towards the center point of the middle diversion hole (6), the two ends of the transverse flow-blocking band (5) have longitudinal bending sections (19), and the longitudinal bending sections (19) respectively match the contours of the portions of the mold hole (3) located at the two ends of the cross-beam section forming portion (4).

10. The porous multi-bridge flow-dividing combined mold for decorative material profiles according to any one of claims 1 to 4, characterized in that: The lower die (2) is provided with a recessed welding chamber (15) on the feeding side, and the lower die (2) is provided with a primary empty knife groove (16), a secondary empty knife groove (17) and a tertiary empty knife groove (18) in sequence around the die hole (3) on the discharging side.

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