CN205008411U - Hot extrusion die of cantilever frame - Google Patents

Abstract

The utility model relates to a hot extrusion die for a cantilever frame, which comprises an upper die and a lower die which are sequentially arranged from front to back, and is characterized in that: the lower die is provided with a welding chamber, a cavity and an outlet, and the cavity The shape is consistent with the profile of the grooved cantilever frame aluminum profile; a retaining table is set at the position corresponding to the middle of the cavity in the welding chamber; square head molds corresponding to the grooves on both sides of the cavity are set on the upper mold The core and 9 distribution holes are symmetrically distributed in the center, and the 9 distribution holes are separated by 10 distribution bridges. A milling sinker is formed on the inner side of the feed end of the split hole directly above the grooves on both sides of the die cavity corresponding to the lower mold, and an external expansion rod is arranged outside the feed end of the split hole. The utility model can effectively produce grooved cantilever frame tubular materials on a relatively small extruder, the cantilever of the extrusion die is not easy to collapse, and is not easy to deviate from the wall, the opening is stable during extrusion, and the front face changes little.

Description

Hot Extrusion Die for Cantilever Frame

technical field

The utility model relates to a hot extrusion die, in particular to a hot extrusion die for a grooved cantilever frame aluminum profile, which belongs to the technical field of die processing.

Background technique

With the continuous development of society, the constant change of market demand, and the intensification of market competition, a high-quality, high-standard large cantilever frame tube is particularly scarce in the market, as shown in Figure 1, which is mainly used for vegetables greenhouse. As a result, huge business opportunities have been brought to mold manufacturers. Many manufacturers are taking action, but the products they make are difficult to meet customer requirements, and their own costs remain high, and molds are easily scrapped. As we all know, the elastic deformation of the large cantilever frame hot extrusion die is very large during extrusion, and the flatness is difficult to guarantee. In particular, the front and rear changes of the large opening are unstable, easy to deviate from the wall, and the cantilever is easy to be deflected and collapsed. This is one of the key reasons for the scrapping of the mold. This type of mold itself has a long and wide cross-section, and its mold strength and life are serious. For a long time, the cantilever frame mold has a high scrap rate in the industry. To solve this kind of problem, it is best to use a large-scale extrusion machine, but at present, large-scale extrusion machines are not very popular in China, and many profile factories do not have the production conditions for large-scale extrusion machines. So to a large extent, it is still necessary to find a way to solve the above problems from the design of the mold.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a hot extrusion die with a cantilever frame, which can prevent collapse, wall deviation, stable extrusion production and long service life.

According to the technical solution provided by the utility model, the hot extrusion die of the cantilever frame includes an upper die and a lower die which are arranged sequentially from front to back, and is characterized in that: the lower die is provided with a welding chamber, a cavity and At the exit, the shape of the cavity is consistent with the profile of the grooved cantilever frame aluminum profile; a retaining table is set at the position corresponding to the middle of the cavity in the welding chamber; The corresponding square head mold core and 9 distribution holes are distributed symmetrically in the center, and the 9 distribution holes are separated by 10 distribution bridges.

Further, a milling sinker is formed on the inner side of the feed end of the split hole directly above the grooves on both sides of the die cavity corresponding to the lower mold, and an external expansion rod is arranged outside the feed end of the split hole.

Further, a sinker bridge is set at the discharge end of the upper mold.

Further, heat treatment process holes are drilled on the upper mold.

Further, the upper mold and the lower mold are tightly matched by screws and pins.

The hot extrusion die of the cantilever frame described in the utility model can effectively produce grooved cantilever frame tubular materials on a relatively small extruder, using 9 holes that are symmetrically and evenly distributed in the center, and the grooves are placed in the diversion holes for direct punching , so that the 10 bridge positions can be evenly stressed, the corners of the mold core are pulled by the bridge positions, and the water-blocking block is added in the welding chamber of the lower mold to produce a cantilever that is not easy to collapse, not easy to deflect the wall, and the opening is stable when extrusion , the front has little change, and the long-life hot extrusion die provides the market with a high-quality and high-standard grooved cantilever frame tube shape.

Description of drawings

Figure 1 is a cross-sectional view of the aluminum profile of the grooved cantilever frame.

Fig. 2 is a front view of the hot extrusion die of the present invention.

Fig. 3 is a C-C sectional view of Fig. 2 .

Fig. 4 is a front view of the upper mold.

FIG. 5 is a cross-sectional view along line A-A of FIG. 4 .

Fig. 6 is a front view of the lower die.

Fig. 7 is a B-B sectional view of Fig. 6 .

detailed description

Below in conjunction with specific accompanying drawing, the utility model is further described.

As shown in Figures 2 to 7: the hot extrusion die of the cantilever frame includes an upper die 1, a lower die 2, a split hole 3, a milling sink 4, a welding chamber 5, a cavity 6, an outlet 7, a retaining Table 8, external expansion rod 9, square head mold core 10, shunt bridge 11, etc.

As shown in Fig. 2 and Fig. 3, the utility model includes an upper mold 1 and a lower mold 2 which are superimposed successively from front to back, and the upper mold 1 and the lower mold 2 are closely matched by two screws and two pins.

As shown in Figures 6 and 7, the lower mold 2 is provided with a welding chamber 5, a cavity 6 and an outlet 7, and the shape of the cavity 6 is consistent with the profile of the grooved cantilever frame aluminum profile shown in Figure 1, The welding chamber 5 is a place for metal welding, which helps to form a good surface quality; a holding platform 8 is set in the welding chamber 5 corresponding to the middle of the cavity 6, and the holding platform 8 is located in the cavity 6 Between the grooves on both sides, it is used to increase the strength of the lower mold 2.

As shown in Fig. 4 and Fig. 5, the upper mold 1 is provided with a square head mold core 10 corresponding to the grooves on both sides of the cavity 6 and 9 distribution holes 3 symmetrically distributed in the center, and the 9 distribution holes 3 Separated by 10 splitter bridges 11; milling and sinking on the inside of the feed end of the splitter hole 3 directly above the grooves on both sides of the cavity 6 corresponding to the lower mold 2 forms a milling sinker 4, and the splitter hole 3 feeds The outside of the end is provided with an external expansion rod 9, which can distribute the feed more reasonably. In addition, a sinker bridge is set at the discharge end of the upper mold 1 to increase the welding pressure. A heat treatment process hole is also drilled on the upper mold 1 .

When the utility model is in use, the groove position of the mold cavity 6 is placed in the diverter hole and punched straight, so that the square head mold core 10 is pulled by four bridge positions, and the outside reaches the balance of feeding by expanding. In this way, the force on the entire section is uniform, and the extrusion core is stable and not easy to deflect. This solves the problem of partial wall. A water blocking table is left in the welding room of the lower mold at the cantilever of the section to increase the strength of the lower mold, which largely solves the problem that the cantilever of the lower mold is easy to collapse. The upper mold adopts the expansion method to reduce the direct pressure of the aluminum flow on the upper mold by sinking the feed bridge position. In contrast, the pressure of the aluminum flow is transferred to the welding chamber of the lower mold, which just increases the pressure of the lower mold. The welding force is reduced, and the pressure of the upper die is reduced, thus solving the problem of large-scale material production on a small extrusion machine.

Claims (5)

1. A hot extrusion die for a cantilever frame, comprising an upper die (1) and a lower die (2) arranged sequentially from front to back, characterized in that: the lower die (2) is provided with a welding chamber (5 ), the cavity (6) and the outlet (7), the shape of the cavity (6) is consistent with the profile of the grooved cantilever frame aluminum profile; the welding chamber (5) corresponds to the middle part of the cavity (6) The position is provided with a retaining platform (8); the upper mold (1) is provided with a square head mold core (10) corresponding to the grooves on both sides of the cavity (6) and 9 distribution holes (3) symmetrically distributed in the center. ), the 9 shunt holes (3) are separated by 10 shunt bridges (11). 2. The hot extrusion die for the cantilever frame according to claim 1, characterized in that: the distribution holes (3) are located directly above the grooves on both sides of the cavity (6) corresponding to the lower die (2) The inner side of the feed end is milled to form a milled sinker (4), and the outer side of the feed end of the split hole (3) is provided with an external expansion rod (9). 3. The hot extrusion die for cantilever frame according to claim 1, characterized in that: a sinker bridge is set at the discharge end of the upper die (1). 4. The hot extrusion die for cantilever frame according to claim 1, characterized in that: a heat treatment process hole is drilled on the upper die (1). 5. The hot extrusion die for the cantilever frame according to claim 1, characterized in that: the upper die (1) and the lower die (2) are tightly fitted by screws and pins.