CN114011897A

CN114011897A - Extrusion die and working belt

Info

Publication number: CN114011897A
Application number: CN202111282824.9A
Authority: CN
Inventors: 代浪; 盛智勇; 黄元春; 王广建; 熊辉辉; 刘健
Original assignee: Hunan Zhongchuang Kongtian New Material Co ltd
Current assignee: Hunan Zhongchuang Kongtian New Material Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-02-08
Anticipated expiration: 2041-11-01
Also published as: CN114011897B

Abstract

The invention discloses an extrusion die and a working band, wherein the working band comprises a feeding end and a discharging end, the feeding end is used for being communicated with a flow guide cavity of the extrusion die, the discharging end is used for being communicated with a rear cutter position of the extrusion die, the feeding end comprises a feeding end face and a feeding side face, and a convex curved surface is further arranged between the feeding end face and the feeding side face. Therefore, when the metal plate enters the feeding end of the working zone, due to the effect of the convex curved surface, the shear deformation stress of the surface layer of the extruded metal plate can be effectively reduced, and further the growth of crystal grains on the surface layer of the metal plate is hindered, so that the crystal grains of the extruded metal plate are uniform, and the task amount of downstream client machine processing is effectively reduced.

Description

Extrusion die and working belt

Technical Field

The invention relates to the technical field of metal section processing, in particular to an extrusion die and a working belt.

Background

The current extrusion die, after extrusion die's working band extruded sheet metal, can form the thick grain layer of a layer about 1mm on extruded sheet metal surface, because the difference of grain homogeneity, lead to the shaping product can appear obvious layering phenomenon in whole cross-section direction, influence the outward appearance effect of shaping product, so lead to removing thick grain layer through the mode of milling at subsequent machining preface, consequently increaseed the task volume that downstream client machine processed.

Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a work belt that can make the grains of the extruded metal plate material uniform and uniform, thereby effectively reducing the amount of tasks required for downstream client machining.

Disclosure of Invention

In view of the above, the present invention is directed to a work belt, which can make the grains of the extruded metal plate uniform and uniform, and effectively reduce the task amount in the downstream client machine processing.

Another object of the present invention is to provide an extrusion die.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a working tape, including be used for with extrusion die's water conservancy diversion chamber be linked together the feed end and be used for with the discharge end that extrusion die's back sword position is linked together, its characterized in that, the feed end includes feeding terminal surface and feeding side, the feeding terminal surface with still be provided with protruding curved surface between the feeding side.

Preferably, the curvature radius of the convex curved surface is between 5mm and 20 mm.

Preferably, the device also comprises a transition surface and a working surface which are arranged between the feeding end and the discharging end, and the transition surface is connected with the feeding side surface and the working surface.

Preferably, the transition surface is an inclined surface, and the working surface is a straight surface.

Preferably, the length of the transition surface is 8mm-12 mm.

Preferably, the included angle between the transition surface and the straight surface is 5-8 degrees.

Preferably, the area of the working tape decreases gradually from the feed end to the discharge end.

An extrusion die comprising a feed strip as claimed in any preceding claim.

According to the technical scheme, the convex curved surface is arranged between the feeding end surface and the feeding side surface of the working belt, so that when a metal plate enters the feeding end of the working belt, the shear deformation stress of the surface layer of the extruded metal plate can be effectively reduced under the action of the convex curved surface, and further the growth of crystal grains on the surface layer of the metal plate is hindered, so that the crystal grains of the extruded metal plate are uniform, and the task amount of downstream clients during machining is effectively reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic front view of an extrusion die according to an embodiment of the present invention;

FIG. 2 is a schematic side view of an extrusion die according to an embodiment of the present invention;

fig. 3 is an enlarged sectional structural view at a of fig. 1.

Wherein, each part name is as follows:

100 is a die surface, 101 is a working belt, 1011 is a feeding end surface, 1012 is a feeding side surface, 1013 is a convex curved surface, 1014 is a transition surface, 1015 is a working surface, 102 is a guide cavity, 103 is a rear cutter position, and 200 is a die cushion.

Detailed Description

In view of the above, the core of the present invention is to provide a work belt, which can make the grains of the extruded metal plate uniform and consistent, and effectively reduce the task amount in the downstream client machine processing.

Another object of the present invention is to provide an extrusion die.

In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 3, the working tape 101 disclosed in the embodiment of the present invention includes a feeding end for communicating with the diversion cavity 102 of the extrusion die and a discharging end for communicating with the rear knife position 103 of the extrusion die, wherein the feeding end includes a feeding end surface 1011 and a feeding side surface 1012, and a convex curved surface 1013 is further disposed between the feeding end surface 1011 and the feeding side surface 1012. Therefore, when the metal plate enters the feeding end of the working belt 101, due to the action of the convex curved surface 1013, the shear deformation stress of the surface layer of the extruded metal plate can be effectively reduced, and further, the growth of the crystal grains on the surface layer of the metal plate is hindered, so that the crystal grains of the extruded metal plate are uniform, and the task load during the processing of a downstream client machine is effectively reduced.

The curvature radius of the convex curved surface is not particularly limited in the embodiment of the present invention, as long as the structure meeting the use requirement of the present invention is within the protection scope of the present invention,

as a preferred embodiment, the curvature radius of the convex curved surface 1013 disclosed in the embodiments of the present invention is preferably between 5mm and 20mm, so that the temperature generated by the shearing deformation at the moment when the metal plate enters the working belt 101 to deform does not promote the crystal grains to grow to form a coarse crystal grain layer, and the defects such as twill and the like after the surface of the formed product is oxidized are not caused.

In order to equalize the flow velocity of each particle in the cross section of the molded product, reduce the size variability of the molded product, and improve the degree of recrystallization of the molded product, the working belt 101 disclosed in the embodiments of the present invention further includes a transition surface 1014 and a working surface 1015 disposed between the feeding end and the discharging end, wherein the transition surface 1014 connects the feeding side surface 1012 and the working surface 1015.

It should be noted that the transition surface 1014 is an inclined surface, the working surface 1015 is a straight surface, when a metal plate enters the obliquely arranged transition surface 1014 from the feeding end of the working belt 101, the inclined surface homogenizes the flow rate of each mass point of the cross section of the metal plate, reduces the difference of the size of a formed product, improves the recrystallization degree of the metal plate, and then the metal plate enters the working surface 1015 for shaping and finally enters the rear cutter position from the discharging end.

Since the length of the transition surface 1014 is set to affect the surface grain size of the formed product and the average grain size of the whole product cross section, the length of the transition surface 1014 disclosed in the embodiment of the present invention is preferably 8mm to 12mm, and the angle between the transition surface 1014 and the working surface 1015 is preferably set to 5 ° to 8 °.

Referring to fig. 3, it can be seen that the working belt 101 according to the embodiment of the present invention has a gradually decreasing area from the feeding end to the discharging end. The arrangement of the working belt 101 can effectively improve the degree of surface layer shearing deformation of the finished metal plate, so that the sizes of crystal grains on the cross section of the whole finished product are uniform, and the production cost of downstream customers is effectively reduced.

The embodiment of the invention also discloses an extrusion die which comprises the feeding belt disclosed by any one of the embodiments.

Because the extrusion die adopts the feeding belt disclosed by the embodiment, the extrusion die has the technical advantages disclosed by the feeding belt, and the embodiment of the invention does not need to be repeated.

It should be noted that the extrusion die disclosed in the embodiment of the present invention includes a die surface 100 and a die pad 200, wherein the die surface 100 and the die pad 200 are connected by a detachable connection manner.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a working tape, including be used for with extrusion die's water conservancy diversion chamber be linked together the feed end and be used for with the discharge end that extrusion die's back sword position is linked together, its characterized in that, the feed end includes feeding terminal surface and feeding side, the feeding terminal surface with still be provided with protruding curved surface between the feeding side.

2. The working belt according to claim 1, wherein the radius of curvature of the convex curve is between 5mm and 20 mm.

3. The work belt of claim 1, further comprising a transition surface and a work surface disposed between the infeed end and the outfeed end, the transition surface connecting the infeed side surface and the work surface.

4. The work belt of claim 3, wherein said transition surface is an inclined surface and said work surface is a flat surface.

5. The working belt according to claim 4, wherein the length of the transition surface is 8mm to 12 mm.

6. A working band according to claim 4, wherein the angle between the transition surface and the flat surface is between 5 ° and 8 °.

7. The work belt of claim 1, wherein the work belt tapers in area from the infeed end to the outfeed end.

8. An extrusion die comprising the feed strip of any of claims 1 to 7.