CN202015747U - A combined drawing die for automatic cold drawing machine for non-ferrous metal pipes - Google Patents

Abstract

The utility model discloses a combined drawing die for an automatic cold drawing machine of nonferrous metal pipes, which relates to the technical field of nonferrous metal pipe processing, and comprises a head die 56; the side surface of the head die 56 is also provided with two dies 57 to form a combined drawing die; a sealing die 64 is also clamped between the head die 56 and the second die 57; an oil storage hole 67 is formed in the center of the sealing die 64, and a sealing die oil injection hole 65 communicated with the oil storage hole 67 is formed in the radial direction; the cold drawing machine has the characteristics of improving the production efficiency, reducing the energy consumption, improving the product quality, reducing the occupation of a production field, reducing the equipment investment and the like, is matched with an automatic cold drawing machine for nonferrous metal pipes, and is suitable for cold drawing of various nonferrous metal pipes such as aluminum, copper and the like.

Description

A combined drawing die for automatic cold drawing machine for non-ferrous metal pipes

technical field

The utility model relates to the technical field of processing nonferrous metal pipes, in particular to a combined drawing die for an automatic cold drawing machine for nonferrous metal pipes.

Background technique

In the prior art, the processing of non-ferrous metal pipes is to extrude the material pipe (i.e. the blank pipe) by the extruder, then, the material pipe is installed in the pipe drawing die, and the material pipe is carried out by the pipe drawing car for the first time. The second tube is drawn to become a semi-finished product; then, the above process is repeated again, and the second tube is drawn to become a finished product. This method of rough drawing and fine drawing has low production efficiency, high production cost and high energy consumption, and it will take up more space for production and increase equipment investment. At the same time, The straightness quality of its finished pipe is also difficult to guarantee.

Contents of the invention

Aiming at the deficiencies of the existing technology, the technical problem to be solved by the utility model is to provide a method that can not only improve production efficiency, reduce energy consumption, but also improve product quality, and can also reduce the occupation of production sites and reduce equipment Portfolio drawing die for investment.

The technical solution adopted by the utility model is to design a combined drawing die for the automatic cold drawing machine of non-ferrous metal pipes: comprising a head die 56; two dies 57 are also installed on the side of the head die 56 to form a combined drawing die.

A sealing mold 64 is also sandwiched between the head mold 56 and the second mold 57; an oil storage hole 67 is opened in the center of the sealing mold 64, and a sealing mold oil injection hole 65 communicating with the oil storage hole 67 is radially opened. .

An annular oil injection mold 59 is also installed outside the head mold 56; in the middle of the annular oil injection mold 59, there is an annular oil storage tank 61 forming an annular oil injection slot 63 with the die hole of the head mold 56 , and the annular oil injection mold oil injection hole 60 communicating with the annular oil storage tank 61 is radially opened.

The combined drawing die used in the automatic cold drawing machine for non-ferrous metal pipes of the utility model adopts double-mode combined drawing, which reduces the conventional drawing passes and realizes two diameter reductions in one process, thus improving production efficiency and Higher product strength also reduces energy consumption; at the same time, due to the reduction of one drawing equipment, it can also reduce the occupation of the production site and reduce equipment investment. In addition, due to the use of double-mode combined drawing, it is beneficial to the centering of the empty drawn tube, ensuring the straightness of the tube after stretching, and preventing longitudinal bending and ellipse; moreover, due to the use of sealed mold sealing oil and annular oil injection seam , which is beneficial to the heat dissipation of the drawing die, reduces the friction coefficient, reduces the drawing force, improves the surface finish of the product, and thus improves the product quality.

Description of drawings

Fig. 1 is the main sectional schematic diagram of the utility model;

Fig. 2 is a schematic sectional view of the special combined drawing die of the present invention.

In the figure: 56 is the head mold, 57 is the second mold, 58 is the material pipe, 59 is the ring type oil injection mold, 60 is the oil injection hole of the ring type oil injection mold, 61 is the ring type oil storage tank, 62 is the ring type oil injection mold Sealing ring, 63 is the annular fuel injection slot, and 64 is the sealing mold, and 65 is the oil injection hole of the sealing mold, and 66 is the sealing mold sealing ring, and 67 is the oil storage hole.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is described further. The following descriptions are by way of example, but the protection scope of the present utility model should not be limited thereto.

Embodiment one:

The combined mold of the present embodiment is formed by combining the head mold 56 and the second mold 57.

Embodiment two:

This embodiment is a special combined drawing die based on the first embodiment, that is, a sealing die 64 is sandwiched between the head die 56 and the second die 57, and an annular oil spray is also installed outside the head die 56. Mod 59. Both sides of the sealing mold 64 have sealing ring grooves for installing the sealing mold sealing ring 66; at the same time, an oil storage hole 67 is also arranged in the center of the sealing mold 64, and a seal connecting the oil storage hole 67 is arranged radially. Molding oil hole 65. On the end face where the annular fuel injection mold 59 is joined with the head mold 56, there is also a sealing ring groove for installing the annular fuel injection mold sealing ring 66; The die hole of mold 56 constitutes the annular oil storage groove 61 of annular oil injection slot 63, and the annular oil injection mold oil injection hole 60 communicating with annular oil storage groove 61 is radially opened.

When in use, during the drawing process, the material tube first undergoes rough drawing by the head die 56 for the first reduction in diameter; then, passes through the fine drawing of the second die 57 for reduction in diameter again. During the rough drawing of the head die 56, the cooling lubricating oil enters the annular oil storage tank 61 in the middle from the annular oil injection die oil injection hole 60 of the annular oil injection die 59, and then flows from the annular oil storage tank 61 to the head die. The annular fuel injection slot 63 that the die hole of 56 constitutes is sprayed to the outer surface of material pipe. After the material pipe after the rough drawing entered the second mold 57, its outer surface was completely immersed in the oil storage hole 67 at the center of the sealing mold 64. This cooling and lubricating method is not only beneficial to the heat dissipation of the drawing die, but also reduces its friction coefficient, reduces the drawing resistance, and is beneficial to improving the surface finish of the product. At the same time, this drawing method of changing two processes into one process and realizing two diameter reductions not only improves production efficiency and product strength, but also reduces energy consumption, and is also conducive to the centering of empty drawn tubes, ensuring The straightness of the pipe after stretching prevents longitudinal bending and oval shape and improves product quality.

The combined drawing die for the automatic cold drawing machine for nonferrous metal pipes of the utility model is matched with the automatic cold drawing machine for nonferrous metal pipes, and is suitable for cold drawing various nonferrous metal pipes such as aluminum and copper.

Claims (3)

1. A combined drawing die for the automatic cold drawing machine of non-ferrous metal pipes, comprising a head die (56); It is characterized in that: two dies (57) are also installed on the side of the head die (56), forming a combined drawing die. 2. The combined drawing die for the non-ferrous metal pipe automatic cold drawing machine according to claim 1, characterized in that: a sealing die (64) is sandwiched between the head die (56) and the second die (57) ); Have an oil storage hole (67) at the center of this sealing mold (64), and radially have the sealing mold oil injection hole (65) that communicates with the oil storage hole (67). 3. The combined drawing die for non-ferrous metal pipe automatic cold drawing machine according to claim 1 or 2, characterized in that: an annular oil injection die (59) is also installed outside the head die (56) ; In the middle part of the annular fuel injection mold (59), there is an annular oil storage tank (61) that forms an annular oil injection slot (63) with the die hole of the head mold (56), and radially has a connected annular storage tank. The oil injection hole (60) of the ring type injection mold of the oil groove (61).

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