High-precision pipe extrusion production device

Abstract

The utility model relates to the technical field of aluminum alloy production, in particular to a high-precision pipe extrusion production device, and aims to solve the problem that when high-precision aluminum alloy pipes are produced through a traditional extrusion device at present, the production efficiency is high. The problems that due to the fact that parts such as an extrusion die cannot meet extrusion production of the high-precision aluminum alloy pipe, the uniformity of the wall thickness of the prepared pipe is poor, the high-precision design requirement is difficult to meet, and the quality and precision of the high-precision pipe are low are solved. The device is mainly composed of an extrusion die, an extrusion gasket, a punching guide rod, an extrusion module, an extrusion shaft and the like, the extrusion module and the die gasket are clamped on the inner side of a die support and then are sequentially matched with multi-stage supporting rings with layered reducing extrusion holes, meanwhile, the interior of the extrusion gasket is arranged to be of a structure with a conical opening, and through a slow upsetting and slow upward pressing mode, the extrusion holes are formed in the extrusion die support. The precision of the extrusion forming size of the aluminum alloy pipe is effectively improved, and the overall production quality of the aluminum alloy high-precision pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy production, in particular to a high-precision pipe extrusion production device. Background Art

[0002] With the continuous improvement of the production and preparation level of aluminum alloys, the demand for high-precision pipes is increasing. The production of aluminum alloy hot extrusion pipes is usually carried out in accordance with two sets of standards, GB4436 and GB / T4437.1. In the actual application of aluminum alloy pipes, the requirements for the wall thickness and dimensional accuracy of the pipes are becoming more and more stringent, thereby further improving the quality of aluminum alloy applications. However, in the current production and extrusion process of aluminum alloy pipes, traditional extruder pipe extrusion production operation devices often have problems such as uneven wall thickness of aluminum alloy products, low extrusion production efficiency, large pipe precision error and low yield rate, which makes it difficult to meet the market demand for high-precision pipes. Therefore, it is necessary to further optimize the device structure of aluminum alloy high-precision pipe extrusion production to improve the overall extrusion preparation quality and efficiency of aluminum alloy pipes. Utility Model Content

[0003] The utility model provides a high-precision pipe extrusion production device to solve the problems existing in the above background.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A high-precision pipe extrusion production device comprises an induction furnace, which is connected to an induction furnace clamp. An ingot feeder is arranged on the side of the induction furnace, which is also connected to a mechanical arm. The ingot feeder is connected to a mold slide, in which a large extrusion needle is penetrated, and an extrusion mold is sleeved on the side of the large extrusion needle close to the mold slide, and an extrusion cylinder is matched with the side of the extrusion mold away from the extrusion needle, and an extrusion needle is also penetrated in the extrusion cylinder, and an extrusion gasket is sleeved on the extrusion needle in the extrusion cylinder, and one side of the extrusion needle in the extrusion cylinder is also connected to an extrusion shaft.

[0006] Furthermore, the extrusion die includes a die support, an extrusion module is sleeved on one side of the die support, a die pad is sleeved close to the extrusion module on the other side of the die support, a primary support ring is provided on the side of the die support, a secondary support ring is provided on the side of the primary support ring, and a tertiary support ring is provided on the side of the secondary support ring.

[0007] Furthermore, an extrusion needle tip is provided on a side of the large extrusion needle in the extrusion cylinder close to the extrusion die.

[0008] Furthermore, a perforated guide rod is horizontally connected to a side of the extrusion shaft away from the extrusion cylinder.

[0009] Furthermore, the inner side of the compression gasket is symmetrically provided with a cone opening.

[0010] The utility model has the following beneficial effects:

[0011] The utility model provides a high-precision pipe extrusion production device, which is mainly composed of an extrusion die, an extrusion gasket, a perforated guide rod, an extrusion module, an extrusion shaft and other components. The extrusion module and the die gasket are clamped on the inner side of the die support, and the multi-stage supporting rings with layered and variable diameters of the extrusion holes are matched in sequence. At the same time, the extrusion gasket is set to have a structure with a tapered mouth, and then the extrusion forming dimensional accuracy of the aluminum alloy pipe is effectively improved through a slow roughing and slow pressing method. The overall production quality of the aluminum alloy high-precision pipe is improved, and the problem of poor uniformity of the wall thickness of the prepared pipe, which is difficult to meet the high-precision design requirements and causes low quality and accuracy of the high-precision pipe is solved when the high-precision aluminum alloy pipe is currently produced by a traditional extrusion device because the extrusion die and other components cannot meet the extrusion production of the high-precision aluminum alloy pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the overall structure of the extruded gasket of the utility model.

[0014] Figure 3 It is a schematic diagram of the overall structure of the extrusion die of the utility model.

[0015] The meanings of the reference numerals are as follows:

[0016] 1. Extrusion die; 2. Die slide; 3. Extrusion gasket; 4. Extrusion needle tip; 5. Extrusion cylinder; 6. Extrusion large needle; 7. Extrusion shaft; 8. Perforation guide rod; 9. Induction furnace; 10. Induction furnace clamp; 11. Ingot feeder; 12. Robotic arm; 13. Extrusion module; 14. Die pad; 15. Die support; 16. Primary support ring; 17. Secondary support ring; 18. Tertiary support ring; 19. Cone mouth. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] like Figure 1-3As shown, a high-precision pipe extrusion production device includes an induction furnace 9, which is equipped with an induction furnace clamp 10. An ingot feeder 11 is installed on the side of the induction furnace 9, and the ingot feeder 11 is also equipped with a mechanical arm 12. The ingot feeder 11 is equipped with a mold slide 2, and an extrusion needle 6 is installed through the mold slide 2. The side of the extrusion needle 6 close to the mold slide 2 is equipped with an extrusion mold 1, and the side of the extrusion mold 1 away from the extrusion needle 6 is matched with an extrusion barrel 5. The extrusion barrel 5 is also equipped with an extrusion needle 6, and the extrusion needle 6 in the extrusion barrel 5 is equipped with an extrusion gasket 3, and an extrusion shaft 7 is also installed on one side of the extrusion needle 6 in the extrusion barrel 5.

[0019] The extrusion die 1 includes a die support 15, one side of the die support 15 is fitted with an extrusion module 13, the other side of the die support 15 is fitted with a die pad 14 close to the extrusion module 13, a primary support ring 16 is tightly installed on the side of the die support 15, a secondary support ring 17 is tightly installed on the side of the primary support ring 16, and a tertiary support ring 18 is tightly installed on the side of the secondary support ring 17.

[0020] An extrusion needle tip 4 is processed on a side of the large extrusion needle 6 in the extrusion cylinder 5 close to the extrusion die 1 .

[0021] A perforated guide rod 8 is horizontally welded and installed on one side of the extrusion shaft 7 away from the extrusion cylinder 5 .

[0022] A cone opening 19 is symmetrically formed on the inner side of the extrusion gasket 3 .

[0023] In specific application, the utility model takes the extrusion production of aluminum alloy pipes by a 55MN forward double-acting extruder as an example. In the preparation stage for the production of high-precision aluminum-zinc-magnesium alloy pipes, the improved preheating extrusion die 1 is assembled and installed on the extruder die slide 2, driven into the center of the extruder, and then the preheated extrusion needle 6 and the extrusion needle tip 4 are installed on the inner hole perforation guide rod 8 of the extrusion shaft 7, and then the improved extrusion gasket 3 is assembled on the extruder mobile mechanical arm 12, and then the qualified ingot is installed in the induction furnace 9 for heating and heat preservation, and then the die support, extrusion gasket 3 and the non-working belt part of the extrusion needle 6 on the pre-production die slide 2 are smeared with salt water for lubrication. The method of replacing lubricating oil with salt water can save costs and avoid the generation of product defects such as bubbles and peeling. After checking that the temperature of the extrusion barrel 5 is qualified, the extrusion needle 6 is sent forward and enters the center position of the extrusion die 1 for pre-positioning; when entering the extrusion stage , after the ingot heated to the temperature in the induction furnace 9 is tested and qualified, it is placed on the ingot feeder 11 of the extruder through the induction furnace clamp 10, and the ingot feeder 11 is sent forward to the center of the extruder. At the same time, the extrusion barrel 5 and the extrusion shaft 7 move forward synchronously to pre-tighten the ingot on the ingot feeder 11, and then the jaws of the ingot feeder 11 are lowered and withdrawn from the center of the extruder. The extrusion barrel 5 moves forward, the ingot is sleeved and locked against the mold slide 2 to lock the extrusion mold 1, and then the extrusion shaft 7 retreats to the limit position, and the mechanical arm 12 enters the center of the extruder to open the jaws. The extrusion shaft 7 moves forward again, pushes the extrusion gasket 3 into the extrusion barrel 5, and presses against the extrusion mold 1, and the mechanical arm 12 swings out of the center of the extruder again, and the perforating extrusion needle 6 moves to the center of the extrusion mold 1; when extruding the pipe, ensure that the ingot is kept at a constant temperature of 480℃, isothermal heating, frequency 50Hz, and the ingot is kept warm for 10min after being heated to the temperature. The extrusion barrel 5 is kept at a constant temperature of 420℃, and the temperature difference between each zone is less than 5℃, The method of slow roughening and slow pressing is adopted, with the roughening speed V=0.3m / min, the metal mold deformation speed V=0.2m / min, and the post-pressurization speed controlled to increase by 0.1mm / s for every 0.1bar decrease in the needle support force. The size of the extrusion needle 6 entering the die hole is controlled between 40-60mm. During continuous extrusion production, the operator regularly cleans the aluminum shell accumulated at the tail of the extrusion needle 6, thereby completing the extrusion production of high-precision pipes of aluminum-zinc-magnesium alloys, solving the problems of uneven wall thickness of high-precision aluminum alloy pipe products, low extrusion production efficiency, large pipe precision error and low finished product rate, and effectively meets the market demand for high-precision pipes. Therefore, the device has good practicality.

Claims

1. A high-precision pipe extrusion production device, comprising an induction furnace (9), the induction furnace (9) is connected to an induction furnace clamp (10), a side of the induction furnace (9) is provided with an ingot feeder (11), the ingot feeder (11) is also connected to a mechanical arm (12), wherein: The ingot feeding machine (11) is connected to a die slide (2), a large extrusion needle (6) is provided through the die slide (2), an extrusion die (1) is sleeved on the side of the large extrusion needle (6) close to the die slide (2), an extrusion barrel (5) is matched with the side of the extrusion die (1) away from the large extrusion needle (6), an extrusion barrel (5) is also provided with a large extrusion needle (6) through the extrusion barrel (5), and an extrusion gasket (3) is sleeved on the large extrusion needle (6) in the extrusion barrel (5), and an extrusion shaft (7) is also connected to one side of the large extrusion needle (6) in the extrusion barrel (5).

2. The high-precision pipe extrusion production device according to claim 1 is characterized in that: The extrusion die (1) comprises a die support (15), an extrusion module (13) is sleeved on one side of the die support (15), a die pad (14) is sleeved close to the extrusion module (13) on the other side of the die support (15), a primary support ring (16) is provided on the side of the die support (15), a secondary support ring (17) is provided on the side of the primary support ring (16), and a tertiary support ring (18) is provided on the side of the secondary support ring (17).

3. The high-precision pipe extrusion production device according to claim 1 is characterized in that: An extrusion needle tip (4) is provided on a side of the large extrusion needle (6) in the extrusion cylinder (5) close to the extrusion die (1).

4. The high-precision pipe extrusion production device according to claim 3 is characterized in that: A perforated guide rod (8) is horizontally connected to a side of the extrusion shaft (7) away from the extrusion cylinder (5).

5. The high-precision pipe extrusion production device according to claim 1 is characterized in that: The inner side of the extrusion gasket (3) is also symmetrically provided with a cone opening (19).

Images