Mould with rear working tape

Abstract

The utility model discloses a die with a rear working tape, which comprises a male die and a female die which are matched and butted with each other, a concave welding chamber is arranged on the feeding side of the female die, a die hole penetrating through the female die is arranged in the welding chamber, the die hole corresponds to the profile of a produced profile and comprises a cantilever section, and a concave rear working tape groove is arranged at the bottom of the welding chamber. And the working tape rear groove is positioned at the cantilever section of the die hole. According to the working tape rear-mounted die, the working tape rear-mounted groove is formed in the position, corresponding to the sectional material cantilever, of the female die, the position is sunk, and the flow speed is increased. For a die without the sinking structure, the high cantilever in the profile is deviated to one side; according to the scheme, the problem is solved through the flow velocity difference. Therefore, according to the scheme, the sectional materials which are difficult to produce can have higher yield and forming quality, and the method is particularly suitable for sectional materials which are large in sectional material span and provided with long cantilevers at the positions close to the ends.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum profile extrusion dies, in particular to a working belt post-mounted die. Background Art

[0002] The basic principle of aluminum extrusion is to apply a certain pressure to the raw aluminum rod so that it flows out from the gap between the punch core and the die hole of the die, thereby obtaining a profile with the desired cross-sectional shape and size; the corresponding position of this gap is called the working zone. When the existing extrusion process produces profiles with long cantilevers, the cantilevers are prone to deflection; for example, for Figure 3 The cantilever ends of the profile shown tend to bend inward, making normal production difficult. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a post-positioned working belt mold to solve the problem that the cantilever of the profile produced by the existing mold is easy to deflect, and to achieve the post-positioning of the local working belt, thereby adjusting the flow rate, avoiding deflection, and improving the profile yield.

[0004] According to the technical solution of the utility model, the utility model provides a working belt post-mold, including a matching male mold and a female mold, the female mold has a recessed welding chamber on the feeding side, a mold hole passing through the female mold is opened in the welding chamber, the mold hole corresponds to the contour of the profile produced, the mold hole includes a cantilever section, and a recessed working belt post-groove is opened at the bottom of the welding chamber, and the working belt post-groove is located at the cantilever section of the mold hole.

[0005] Furthermore, the rear groove of the working belt is located on one side in the width direction of the cantilever section.

[0006] Furthermore, the range of the rear groove of the working belt covers a part or the whole of the cantilever section.

[0007] Furthermore, the cantilever section having the rear groove of the working belt is located near the edge of the die hole.

[0008] Furthermore, the depth of the rear groove of the working belt is 0.5 mm to 1 mm.

[0009] In a preferred embodiment, the male mold has several through-diversion holes, with diversion bridges between the diversion holes. The male mold has a protruding core on the discharge side, and the end of the core has a core working belt; on the feed side, there is a drop of 0.5mm to 1mm between the core working belt and the adjacent rear groove of the working belt.

[0010] Furthermore, the produced profile has two strip-shaped cavities arranged side by side in the length direction, with protruding screw holes on the inside of the cavity and protruding cantilevers on the outside of the cavity, and at least one cantilever is located at the edge of the cavity in the length direction.

[0011] Furthermore, the mold core corresponds to the cavity, and the mold core has a material guide groove at a position corresponding to the screw hole, and the material guide groove is recessed relative to the side of the mold core; the material guide groove is an inclined surface on the feeding side for transition to the side of the mold core.

[0012] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0013] In this utility model, a post-positioned working belt mold features a post-positioned working belt groove on the die, corresponding to the profile's cantilever. This recessed area lowers the profile, accelerating the flow rate. In molds without this recessed structure, the high cantilever in the profile will tilt to one side; this solution addresses this issue by leveraging the flow rate differential. As a result, this solution can achieve higher yields and higher molding quality for difficult-to-produce profiles, and is particularly suitable for profiles with large spans and long cantilevers near the ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the local structure of the die of the first embodiment provided by the utility model.

[0015] Figure 2 It is a schematic diagram of the local structure of the die of the second embodiment provided by the utility model.

[0016] Figure 3 This is a schematic diagram of the profile interface structure of the third embodiment provided by the present utility model.

[0017] Figure 4 It is a perspective structural diagram of the mold assembly state of the third embodiment provided by the present utility model.

[0018] Figure 5 It is a schematic cross-sectional structural diagram of the mold assembly state of the third embodiment provided by the present utility model.

[0019] Figure 6 yes Figure 5 Schematic diagram of the locally enlarged structure of the rear groove of the working belt.

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

[0021] 1. Punch; 2. Die; 3. Welding chamber; 4. Die hole; 5. Cantilever section; 6. Rear groove of working belt; 7. Diverter hole; 8. Mold core; 9. Mold core working belt; 10. Cavity; 11. Screw hole position; 12. Cantilever; 13. Material guide chute. DETAILED DESCRIPTION

[0022] The utility model provides a working belt rear-positioned die, which solves the problem that the cantilever of the profile produced by the existing die is easy to deflect, and realizes the partial working belt rear-positioning, thereby adjusting the flow rate, avoiding deflection, and improving the profile yield.

[0023] See also Figures 1 to 6 The working belt post-die of the embodiment of the present invention is a diversion combination die, including a matching butt-jointed punch 1 and die 2. The direction from the punch 1 to the die 2 is the direction of extrusion feeding and discharging of the raw aluminum rod. The die 2 has a recessed welding chamber 3 on the feeding side, and a die hole 4 is provided in the welding chamber 3, which passes through the die 2. The die hole 4 corresponds to the profile of the produced profile, and the die hole 4 includes a cantilever section 5. A recessed working belt post-die groove 6 is provided at the bottom of the welding chamber 3, and the working belt post-die groove 6 is located at the cantilever section 5 of the die hole 4. For example, the range of the working belt post-die groove 6 covers a part of the cantilever section 5 (such as Figure 1 as shown) or as a whole (as Figure 2 As shown); For example Figure 1 As shown, the working belt rear groove 6 is located on one side of the cantilever section 5 in the width direction.

[0024] The main concept and principle of this solution is to adjust the flow rate at a local location of the die hole by installing a further sinking groove in the welding chamber. Due to the sinking structure, the working belt used for profile forming is moved back a distance to the downstream side, so it can be called "working belt rearward". The position and size of the working belt rearward groove 6 can be determined and adjusted according to the specific flow rate distribution. And for example Figure 2 As shown, for the structure with a secondary welding chamber, a working belt rear groove 6 can be further provided; the secondary welding chamber is a groove that is sunken relative to the (primary) welding chamber. The main difference between the working belt rear groove 6 and the secondary welding chamber in this scheme is that the working belt rear groove 6 is only provided at a specific local position, while the range of the secondary welding chamber completely covers the die hole; and the depth of the working belt rear groove 6 is relatively small, for example, 0.5mm to 1mm (the depth refers to the distance that the working belt rear groove 6 is recessed relative to the bottom surface of the welding chamber adjacent to it); therefore, the roles played are also different.

[0025] Preferably, the cantilever section 5 having the rear groove 6 of the working belt is located near the edge of the mold hole 4; in other words, this solution is particularly suitable for profiles with a large span and a longer cantilever near the end of the length direction, and the rear groove 6 of the working belt is set at the cantilever position at the end of the length direction, which is more prone to deflection deformation.

[0026] See also Figures 3 to 6More specifically, the punch 1 has a number of through-holes 7, with diversion bridges between them. The diversion holes 7 smoothly transition to the sidewalls of the welding chamber 3 on the discharge side. The punch 1 has a protruding core 8 on the discharge side. The end of the core 8 has a core working belt 9 that protrudes outward. The core working belt 9 is located within the die hole 4, forming a gap between the two for profile extrusion. In conventional solutions, the core working belt 9 is flush with the welding chamber 3; in this solution, on the feed side, there is a 0.5mm to 1mm drop between the core working belt 9 and the adjacent working belt rear groove 6 (at its bottom). Figure 6 In the embodiment shown, the drop is 0.5 mm.

[0027] See also Figure 3 The profile produced in this embodiment has two cavities 10 arranged side by side in the longitudinal direction, with C-shaped screw holes 11 protruding inside the cavities and multiple cantilever arms 12 protruding outside the cavities 10, at least one of which is located at the edge of the length of the cavity 10. In actual production, the cantilever arms 12 at the extreme edges of the two sides of the profile are prone to tilting inward. Figure 2 As shown, providing a working belt rear groove 6 at the cantilever 12 corresponding to the edge position, which completely covers the cantilever section 5, can significantly improve and prevent the deflection problem.

[0028] More specifically, the mold core 8 corresponds to the cavity 10, and the mold core 8 has a material guide groove 13 at a position corresponding to the screw hole 11. The material guide groove 13 is recessed relative to the side of the mold core 8; the material guide groove 13 is an inclined surface on the feeding side for transitioning to the side of the mold core 8; thereby, sufficient aluminum material enters the position of the mold hole 4 corresponding to the screw hole 11, ensuring the molding effect of the screw hole 11.

[0029] In summary, in the post-working-band mold of the present invention, a post-working-band groove is provided at a position on the die corresponding to the cantilever of the profile, and this position is sunken to speed up the flow rate. For molds that do not adopt such a sinking structure, the high cantilever in the profile will be biased to one side; and this solution solves this problem by utilizing the difference in flow rate. Therefore, this solution can make such difficult-to-produce profiles have a higher yield and molding quality, and is especially suitable for profiles with a large span and a longer cantilever near the end. In addition, this solution can be applied to the mold repair process, that is, for molds that produce deflected profiles, the concept of this solution can be adopted to process the post-working-band groove at the corresponding position for adjustment, which enriches the mold repair method and improves efficiency and flexibility.

Claims

1. A working belt rear mold, comprising a matching butt-jointed male mold (1) and female mold (2), characterized in that: The die (2) has a recessed welding chamber (3) on the feeding side. A die hole (4) penetrating the die (2) is provided in the welding chamber (3). The die hole (4) corresponds to the profile of the produced profile. The die hole (4) includes a cantilever section (5). A recessed working belt rear groove (6) is provided at the bottom of the welding chamber (3). The working belt rear groove (6) is located at the cantilever section (5) of the die hole (4).

2. The working belt post-mold according to claim 1, characterized in that: The working belt rear groove (6) is located on one side of the cantilever section (5) in the width direction.

3. The working belt post-mold according to claim 1, characterized in that: The range of the working belt rear groove (6) covers a part or the whole of the cantilever section (5).

4. The working belt post-mold according to claim 1, characterized in that: The cantilever section (5) having a working belt rear groove (6) is located near the edge of the die hole (4).

5. The working belt post-mold according to claim 1, characterized in that: The depth of the rear groove (6) of the working belt is 0.5 mm to 1 mm.

6. The working belt post-mold according to any one of claims 1 to 4, characterized in that: The punch (1) has a plurality of through diversion holes (7), with diversion bridges between the diversion holes (7). The punch (1) has a protruding mold core (8) on the discharge side, and a mold core working belt (9) at the end of the mold core (8); on the feed side, a drop of 0.5 mm to 1 mm is provided between the mold core working belt (9) and the adjacent working belt rear groove (6).

7. The working belt post-mold according to claim 6, characterized in that: The produced profile has two cavities (10) in a strip shape and arranged side by side in the length direction, a protruding screw hole (11) on the inner side of the cavity, and a protruding cantilever (12) on the outer side of the cavity (10), with at least one cantilever (12) located at an edge position in the length direction of the cavity (10).

8. The working belt post-mold according to claim 7, characterized in that: The mold core (8) corresponds to the cavity (10), and the mold core (8) has a material guide groove (13) at a position corresponding to the screw hole position (11), and the material guide groove (13) is recessed relative to the side of the mold core (8); the material guide groove (13) is an inclined surface on the feeding side for transitioning to the side of the mold core (8).

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