Extrusion die for tail-shrinkage-removing section bar

Abstract

The utility model discloses a tail-shrinkage-removing profile extrusion die, and belongs to the field of extrusion dies, the tail-shrinkage-removing profile extrusion die comprises an extrusion container used for being mounted on an extrusion container seat, a positive die sleeved in the feed end of the extrusion container, and a divergent die sleeved in the feed end of the extrusion container and butted with the positive die, the side wall of the positive mold is provided with at least four first sliding blocks which are distributed in an annular array and are used for being in sliding connection with the inner wall of the extrusion cylinder to achieve limiting, and temperature sensors connected with an external temperature adjusting system are embedded in the first sliding blocks; at least four first lock bolts which are distributed in an annular array and are used for being in threaded connection with the positive mold are inserted into the discharging end of the extrusion container, and first lock holes corresponding to the first lock bolts are formed in the end, close to the extrusion container, of the positive mold. According to the shrinkage-tail-removing profile extrusion die, the positive die and the divergent die are stably connected with the extrusion cylinder through the locking structures, so that the stability and the safety in the extrusion process are ensured.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of extrusion dies, and particularly relates to a tail-shrinking profile extrusion die. BACKGROUND

[0002] An extrusion die is used to shape metal materials into a desired shape by applying pressure. During the extrusion process, the metal material is placed in the die, and as the pressure continues to increase, the metal material is plastically deformed in the die, and finally shaped into a product consistent with the shape of the die. This process requires the die to withstand extremely high pressure and temperature, so the material and manufacturing process are crucial.

[0003] In metal extrusion processing, tail shrinking usually refers to a special defect of the tail of an extruded profile, which mainly occurs in the final extrusion stage. Tail shrinking is characterized by shrinkage, depression or irregular shape of the tail of the extruded profile. The causes of tail shrinking of the extrusion die involve raw materials, extrusion process, die design and equipment.

[0004] Therefore, the application provides a tail-shrinking profile extrusion die to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The application provides a tail-shrinking profile extrusion die, which aims to solve the problem of tail shrinking of the existing extrusion die in the extrusion process.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a tail-shrinking profile extrusion die, comprising an extrusion cylinder for being installed on an extrusion cylinder seat, a positive die for being sleeved in the feeding end of the extrusion cylinder, and a shunt die for being sleeved in the feeding end of the extrusion cylinder and being butt-jointed with the positive die.

[0007] The side wall of the positive die is provided with at least four first sliding blocks arranged in a ring array and used for limiting by being slidably connected with the inner wall of the extrusion cylinder, the first sliding blocks are each embedded with a temperature sensor connected with an external temperature adjusting system, the discharging end of the extrusion cylinder is inserted with at least four first locking bolts arranged in a ring array and used for being screwed with the positive die, the end of the positive die close to the extrusion cylinder is provided with first lock holes corresponding to the first locking bolts, and the side surface of the extrusion cylinder is inserted with at least four second locking bolts arranged in a ring array and used for being screwed with the side wall of the shunt die, and the side surface of the shunt die is provided with second lock holes corresponding to the second locking bolts. In this way, the positive die and the shunt die are stably connected with the extrusion cylinder through the locking structure, so that the stability and safety in the extrusion process are ensured; the temperature change in the extrusion process is monitored in real time, so that the external temperature adjusting structure can be adjusted in real time, so that the metal material is uniformly heated during welding and shaping, and tail shrinking is avoided, and the quality of the extruded profile is improved.

[0008] Preferably, the side of the extrusion cylinder is symmetrically provided with double rows of clamping slots arranged side by side for clamping with the extrusion cylinder base.

[0009] Preferably, the discharge end of the flow distribution die is fixedly connected with a core die through four flow distribution bridges arranged in an annular array, and flow distribution holes are formed between adjacent flow distribution bridges.

[0010] Preferably, the positive die is provided with a welding chamber with a bowl-shaped side truncation surface near one end of the flow distribution die, and the discharge end of the positive die has a sizing belt aligned with the outlet edge of the welding chamber.

[0011] Preferably, the first slider end cap is provided with a cover.

[0012] Preferably, the side of the flow distribution die has at least four second sliders arranged in an annular array for sliding connection with the sliding chute of the extrusion cylinder to achieve limiting.

[0013] The de-shrinking tail section extrusion die, the positive die and the flow distribution die are stably connected with the extrusion cylinder through the locking structure, ensuring the stability and safety during the extrusion process.

[0014] The de-shrinking tail section extrusion die can monitor the temperature change in the extrusion process in real time through the temperature sensor, so that the external temperature adjusting structure can be adjusted in real time, ensuring that the metal material is uniformly heated during welding forming, thereby avoiding the appearance of tail shrinkage and improving the quality of the extruded section. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural schematic diagram of a de-shrinking tail section extrusion die;

[0016] Fig. 2 It is an exploded structural schematic diagram of a de-shrinking tail section extrusion die;

[0017] Fig. 3 It is a structural schematic diagram of the side truncation of a positive die of a de-shrinking tail section extrusion die.

[0018] In the drawings:

[0019] 1, extrusion cylinder; 11, double rows of clamping slots; 12, first lock; 13, second lock;

[0020] 2, positive die; 21, welding chamber; 22, sizing belt; 23, first slider; 231, first lock hole; 232, cover; 24, temperature sensor;

[0021] 3, flow distribution die; 31, second lock hole; 32, second slider; 34, flow distribution bridge; 35, core die;

[0022] 36, flow distribution hole. DETAILED DESCRIPTION

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] This embodiment provides a profile extrusion die with a reduced tail, such as Figs. 1-3 As shown, the tail-removing profile extrusion die includes an extrusion cylinder 1 for mounting on an extrusion cylinder seat, a positive die 2 fitted inside the feed end of the extrusion cylinder 1, and a diversion die 3 fitted inside the feed end of the extrusion cylinder 1 and connected to the positive die 2.

[0025] The side wall of the positive mold 2 has at least four first sliders 23 arranged in a ring array for limiting by sliding connection with the inner wall of the extrusion cylinder 1. Each of the first sliders 23 is equipped with a temperature sensor 24 connected to an external temperature control system. The discharge end of the extrusion cylinder 1 is inserted with at least four first locking bolts 12 arranged in a ring array for screwing with the positive mold 2. The positive mold 2 has a first locking hole 231 corresponding to the first locking bolt 12 at one end near the extrusion cylinder 1. The side of the extrusion cylinder 1 is inserted with at least four second locking bolts 13 arranged in a ring array for screwing with the side wall of the diversion mold 3. The side of the diversion mold 3 is provided with a second locking hole 31 corresponding to the second locking bolt 13.

[0026] In use, the heated metal strip is pushed by external pressure into the feed end of the extrusion cylinder 1, passes through the diverter 3 and the main die 2 in sequence, and finally flows out of the discharge end of the extrusion cylinder 1. During assembly, the main die 2 is first inserted into the feed end of the extrusion cylinder 1 through the first slider 23 on the side to form a limit and guide, and is tightened by the first locking bolt 12 and the first locking hole 231 on the discharge end face of the main die 2 to fix the main die 2 inside the extrusion cylinder 1. Then, the diverter 3 is inserted into the extrusion cylinder 1 and covers the feed end of the main die 2. The second locking bolt 13 is screwed into the second locking hole 31 on the side of the flow divider 3, thereby fixing the flow divider 3 inside the extrusion cylinder 1. This ensures the overall stability of the mold during extrusion processing and helps to avoid the occurrence of tail shrinkage. At the same time, during the processing, the temperature sensor 24 inside the first slider 23 can reflect the heating status around the positive mold 2 in real time, which can be easily adjusted in real time through the external temperature adjustment structure, providing a stable and uniform heat environment for the extrusion process and further reducing the occurrence of tail shrinkage.

[0027] Furthermore, the side of the extrusion cylinder 1 is symmetrically provided with two rows of slots 11 arranged in parallel for engaging with the extrusion cylinder seat; this engaging method ensures a stable connection between the extrusion cylinder 1 and the extrusion cylinder seat, preventing displacement or loosening during the extrusion process.

[0028] Specifically, the outlet end of the shunt die 3 is fixedly connected with a core die 35 through four shunt bridges 34 arranged in a ring array, a shunt hole 36 is formed between adjacent shunt bridges 34, the positive die 2 is provided with a welding chamber 21 with a bowl-shaped side truncation at one end close to the shunt die 3, and the outlet end of the positive die 2 has a sizing belt 22 aligned with the outlet edge of the welding chamber 21; during extrusion, the metal material enters the inside of the die through the shunt hole 36 and gradually forms under the guidance of the core die 35, the welding chamber 21 provides a preliminary shaping space, and the sizing belt 22 further consolidates the shape and size of the profile, thereby improving the quality and consistency of the extruded profile, and the bowl-shaped welding chamber 21 is beneficial to improve the smoothness of the metal material flow and maintain the uniformity and stability of the extruded device.

[0029] Further, the first slider 23 is provided with a cover 232 at the end; the cover 232 at the end of the first slider 23 is used to protect the structure and sensors inside the slider, preventing damage or contamination during the extrusion process.

[0030] Further, the shunt die 3 has at least four second sliders 32 arranged in a ring array on the side for sliding connection with the sliding chute of the extrusion cylinder 1 to achieve limiting; the design of the second slider 32 enhances the stability of the shunt die 3 during extrusion, preventing displacement or loosening due to vibration or impact. This limiting method ensures the precise alignment between the shunt die 3 and the extrusion cylinder 1, thereby improving the precision and quality of the extruded profile, and at the same time, the sliding connection of the second slider 32 also facilitates the installation and disassembly of the die, improving the work efficiency.

[0031] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical solution and concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A de-tailing profile extrusion die comprising an extrusion barrel (1) for mounting on an extrusion barrel holder, a positive die (2) fitted inside the feed end of the extrusion barrel (1) and a split flow die (3) fitted inside the feed end of the extrusion barrel (1) and abutting the positive die (2), characterised in that: The side wall of the positive mold (2) has at least four first sliding blocks (23) arranged in a ring array for limiting by sliding connection with the inner wall of the extrusion cylinder (1), each of the first sliding blocks (23) is embedded with a temperature sensor (24) connected with an external temperature adjusting system, the discharge end of the extrusion cylinder (1) is inserted with at least four first locking bolts (12) arranged in a ring array for screwing with the positive mold (2), the positive mold (2) is provided with a first lock hole (231) corresponding to the first locking bolt (12) near one end of the extrusion cylinder (1), the side surface of the extrusion cylinder (1) is inserted with at least four second locking bolts (13) arranged in a ring array for screwing with the side wall of the shunt mold (3), and the shunt mold (3) is provided with a second lock hole (31) corresponding to the second locking bolt (13) on the side surface.

2. The de-tail docking profile extrusion die of claim 1, wherein: The side surface of the extrusion cylinder (1) is symmetrically provided with double rows of clamping grooves (11) arranged side by side for clamping with the extrusion cylinder seat.

3. A de-tail taper extrusion die according to claim 2, characterised in that: The discharge end of the shunt mold (3) is fixedly connected with a core mold (35) through four shunt bridges (34) arranged in a ring array, and a shunt hole (36) is formed between adjacent shunt bridges (34).

4. A de-tail taper extrusion die according to claim 3, characterised in that: The positive mold (2) is provided with a welding chamber (21) with a bowl-shaped side surface truncation near one end of the shunt mold (3), and the discharge end of the positive mold (2) is provided with a shaping belt (22) aligned with the outlet edge of the welding chamber (21).

5. A de-tail taper extrusion die according to claim 4, characterised in that: The end of the first sliding block (23) is covered with a cover (232).

6. A de-tail taper extrusion die according to claim 5, characterised in that: The side surface of the shunt mold (3) is provided with at least four second sliding blocks (32) arranged in a ring array for limiting by sliding connection with the sliding groove of the extrusion cylinder (1).

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