Tungsten steel embedded type aluminum alloy special die

Abstract

The utility model relates to a tungsten steel embedded type aluminum alloy special die which comprises an upper die, a lower die and a lower die cushion, a feeding channel and a connecting boss are arranged on the upper die, a connecting groove is formed in the lower die, connecting holes are formed in the lower die and the lower die cushion, a discharging port is formed in the lower die cushion, a stepped pressing opening is formed in the lower die, and a tungsten steel embedded block is arranged at the step position of the stepped pressing opening. Preferably, a trumpet-shaped extrusion opening is formed in the lower portion of the feeding opening, and a smooth transition cambered surface is arranged at the joint of the feeding opening and the extrusion opening. The tungsten steel inlay block is arranged at the most easily damaged part of the die, so that the service time can be prolonged, the tungsten steel inlay block can be replaced, the cost of replacing all the damaged lower die is reduced, the smooth transition cambered surface is arranged at the joint of the feed port and the extrusion port, the accumulation of sticky aluminum and particles cannot be left, and the surface quality of a profile is better.

Description

Technical Field

[0001] The utility model relates to a tungsten steel inlaid aluminum alloy special mold, belonging to the technical field of special molds. Background Art

[0002] In the process of aluminum flat tube extrusion production, special molds are needed to extrude aluminum flat tubes. Figure 1 and 2 As shown, it includes an upper die 1, a lower die 3 and a lower die pad 5, a feed channel 2 is provided on the upper die 1, a connecting boss is provided at the bottom of the upper die 1, a connecting groove 10 is provided at the top of the lower die 3, a connecting hole 7 is provided on the lower die 3 and the lower die pad 5, a trumpet-shaped extrusion port 8 is provided on the lower die 3, a feed port 4 is provided at the top of the extrusion port 8, a discharge port 6 is provided on the lower die pad 5, and a processing empty tool table 9 is provided between the feed port 4 and the extrusion port 8, forming a pointed space, which becomes a place for sticky aluminum and particles to accumulate, which will cause surface streaks, roughness, bright stripes, profile tearing, mold blockage and other problems of the profile, and the extrusion port 8 is easily damaged, and the entire lower die 3 needs to be replaced when replaced, which increases the cost. Utility Model Content

[0003] The utility model provides a tungsten steel inlaid aluminum alloy special mold, which solves the problem that a processing empty tool table is provided between the current mold feed port and the extrusion port, forming a sharp-angled space, which becomes an accumulation site for sticky aluminum and particles, thus causing surface streaks, roughness, bright stripes, profile tearing, mold blockage and other problems of the profile, and is easily damaged at the extrusion port, and the entire lower mold needs to be replaced when replacing it, which increases the cost.

[0004] The utility model relates to a tungsten steel inlaid aluminum alloy special mold, comprising an upper mold, a lower mold and a lower mold pad, the upper mold is provided with a feed channel and a connecting boss, the lower mold is provided with a connecting groove, the lower mold and the lower mold pad are provided with connecting holes, the lower mold pad is provided with a discharge port, the lower mold is provided with a stepped pressure port, a tungsten steel inlaid block is provided at the step of the stepped pressure port, a feed port is provided at the top of the tungsten steel inlaid block, as a preferred embodiment, a trumpet-shaped extrusion port is provided at the lower part of the feed port, and a smooth transition arc surface is provided at the connection between the feed port and the extrusion port.

[0005] As a preferred embodiment, a flow-blocking bridge is provided in the feed channel, which not only reasonably distributes the feed, but also enhances the stability of the mold structure and effectively improves the product quality.

[0006] As a preferred embodiment, the upper die, the lower die and the lower die pad are made of aluminum alloy material.

[0007] As a preferred embodiment, positioning holes are provided at the bottom of the connecting groove and the top of the connecting boss, and positioning pins are connected to the upper and lower positioning holes to facilitate and quickly position and connect the upper mold and the lower mold.

[0008] The utility model has the following beneficial effects:

[0009] Setting tungsten steel inlays at the most vulnerable part of the mold can increase its service life. The tungsten steel inlays can be replaced, reducing the cost of replacing the entire lower mold due to damage. A smooth transition arc surface is set at the connection between the feed port and the extrusion port, which will not leave any accumulation of sticky aluminum and particles, and the surface quality of the profile is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the prior art;

[0011] Figure 2 It is a schematic diagram of the bottom structure of the upper mold in the prior art;

[0012] Figure 3 It is a structural schematic diagram of the utility model;

[0013] Figure 4 for Figure 3 Schematic diagram of the top structure of the middle upper mold;

[0014] Figure 5 for Figure 3 Schematic diagram of the bottom structure of the middle and lower mold pads;

[0015] In the figure: 1. upper die, 2. feed channel, 3. lower die, 4. feed port, 5. lower die pad, 6. discharge port, 7. connecting hole, 8. extrusion port, 9. processing empty tool table, 10. connecting groove, 11. tungsten steel inlay block, 12. smooth transition arc surface, 13. stepped pressure port, 14. flow blocking bridge, 15. positioning column. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with embodiments.

[0017] Embodiment 1, as Figures 3 to 5 As shown, the utility model is a tungsten steel inlaid aluminum alloy special mold, including an upper mold 1, a lower mold 3 and a lower mold pad 5, the upper mold 1 is provided with a feed channel 2 and a connecting boss, the lower mold 3 is provided with a connecting groove 10, the lower mold 3 and the lower mold pad 5 are provided with connecting holes 7, the lower mold pad 5 is provided with a discharge port 6, the lower mold 3 is provided with a stepped pressure port 13, a tungsten steel inlaid block 11 is provided at the step of the stepped pressure port 13, a feed port 4 is provided on the top of the tungsten steel inlaid block 11, a trumpet-shaped extrusion port 8 is provided at the lower part of the feed port 4, and a smooth transition arc surface 12 is provided at the connection between the feed port 4 and the extrusion port 8.

[0018] When in use, the tungsten steel inlay block 11 is inlaid into the stepped pressure port 13, and then the connecting bolt is inserted into the connecting hole 7 of the lower die 3 and the lower die pad 5 for connection and fixing, and then the connecting boss is inserted into the connecting groove 10 to complete the connection. During extrusion, the material enters from the feed channel 2 of the upper die, and then enters the feed port 4 and the extrusion port 8 for extrusion. There is no empty tool position for storing particles, and the absorbed particles are taken away with the production of the flat tube, which will not cause serious defects. When the extrusion port 8 is severely worn, it can be disassembled and only the tungsten steel inlay block 11 can be replaced.

[0019] Example 2, based on Example 1, the extruded product is a microchannel aluminum flat tube, which is in the shape of a long flat strip. Figure 2 It can be clearly seen from the figure that the storage volume at both ends of the flat strip is much less than that in the middle. This can easily lead to too fast feeding speed in the middle and insufficient feeding at both ends, resulting in product defects. Due to mismatched feeding, the risk of mold deformation is greatly increased, which further makes it difficult to ensure the stability of product quality. Therefore, we have set a flow blocking bridge 14 in the feed channel 2. The newly modified structure adds a flow blocking bridge 14 in the middle feeding position. This improvement not only reasonably distributes the feeding, but also enhances the stability of the mold structure, effectively improving product quality.

[0020] The upper die 1, the lower die 3 and the lower die cushion 5 are made of aluminum alloy material.

[0021] The bottom of the connecting groove 10 and the top of the connecting boss are both provided with positioning holes, and the upper and lower positioning holes are connected with positioning pins 15. The tungsten steel inlay block 11 can be made of DY46 tungsten steel material.

[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0023] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. A tungsten steel inlaid aluminum alloy special mold, comprising an upper mold (1), a lower mold (3) and a lower mold pad (5), the upper mold (1) is provided with a feed channel (2) and a connecting boss, the lower mold (3) is provided with a connecting groove (10), the lower mold (3) and the lower mold pad (5) are provided with connecting holes (7), and the lower mold pad (5) is provided with a discharge port (6). Features: The lower die (3) is provided with a stepped pressing opening (13), a tungsten steel inlay block (11) is provided at the step of the stepped pressing opening (13), a feed opening (4) is provided at the top of the tungsten steel inlay block (11), a trumpet-shaped extrusion opening (8) is provided at the lower part of the feed opening (4), and a smooth transition arc surface (12) is provided at the connection between the feed opening (4) and the extrusion opening (8).

2. The tungsten steel inlaid aluminum alloy special mold according to claim 1, Features: A flow-blocking bridge (14) is provided in the feed channel (2).

3. The tungsten steel inlaid aluminum alloy special mold according to claim 1 or 2, Features: The upper die (1), the lower die (3) and the lower die pad (5) are made of aluminum alloy material.

4. The tungsten steel inlaid aluminum alloy special mold according to claim 1, Features: The bottom of the connecting groove (10) and the top of the connecting boss are both provided with positioning holes, and positioning plug posts (15) are connected in the upper and lower positioning holes.

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