A method for controlling flatness of a continuously extruded strip

Abstract

The present application relates to a kind of continuous extrusion strip flatness control method, comprising the following steps: 1) in the water tank of continuous extruder output side, and located between the strip inlet and strip outlet of water tank interval installation several located in the same straight line limiting mechanism, the limiting mechanism is provided with the channel for strip-shaped strip to pass through;2) install atomizing spray device towards strip-shaped strip in water tank;3) open atomizing spray device, and strip-shaped strip exported by continuous extruder is sent into water tank by strip inlet, and in turn uniform speed passes through the channel of limiting mechanism, strip-shaped strip is positioned by channel, and finally exported from strip outlet.This control method helps to limit the transport orientation of strip, improve the bending degree of strip.

Description

TECHNICAL FIELD

[0001] The present application relates to a continuous extrusion strip flatness control method. BACKGROUND

[0002] In the production process of aluminum strip, aluminum material containing alloy is formed into strip-shaped strip with rectangular cross section by continuous extrusion, and then the strip-shaped strip is formed into thin sheet-shaped aluminum strip through subsequent rolling process. The temperature of the strip-shaped strip output by continuous extrusion is usually about 560℃, and the alloy inside the strip-shaped strip needs to be rapidly cooled to produce solid solution.

[0003] The existing cooling method is to pass the strip-shaped strip output by continuous extrusion into a long tank filled with water for cooling. However, the strip-shaped strip passing into the water tank is not uniformly cooled, and the orientation of the strip-shaped strip is not limited in the long tank, so that the strip-shaped strip inevitably twists and deforms left and right, forming a wave-like shape, which affects the flattening and forming quality of the subsequent strip.

[0004] Therefore, a method for improving the bending degree of the strip is needed. SUMMARY

[0005] The purpose of the present application is to provide a continuous extrusion strip flatness control method which helps to limit the delivery orientation of the strip and improve the bending degree of the strip.

[0006] The technical solution of the present application is as follows: a continuous extrusion strip flatness control method, comprising the following steps:

[0007] 1) A plurality of limiting mechanisms located on the same straight line are installed in the water tank on the output side of the continuous extrusion machine and spaced between the strip inlet and the strip outlet of the water tank, and a slot for the strip-shaped strip to pass through is arranged on the limiting mechanism;

[0008] 2) An atomizing spraying device facing the strip-shaped strip is installed in the water tank;

[0009] 3) The atomizing spraying device is turned on, the strip-shaped strip output by the continuous extrusion machine is sent into the water tank from the strip inlet, and then uniformly passes through the slots of the limiting mechanisms at a constant speed, the strip-shaped strip is limited by the slots, and finally is output from the strip outlet.

[0010] Further, a pair of fixed plates is installed between the strip inlet and the strip outlet in the water tank, and the limiting mechanisms are arranged in the transverse direction between the pair of fixed plates.

[0011] Further, the limiting mechanism comprises a lower limiting graphite block fixed to the pair of fixed plates, a slot is arranged on the upper surface of the lower limiting graphite block in the transverse direction, and an upper limiting graphite block capable of being opened and closed by turning over is arranged on the upper side of the lower limiting graphite block.

[0012] Furthermore, the fixing grooves are provided laterally spaced within a pair of fixing plates, and the lower limit graphite block is disposed within the fixing grooves and locked by a locking mechanism.

[0013] Furthermore, the locking mechanism includes two pairs of locking bolts screwed onto the fixed plate, with one end of each locking bolt penetrating the lower limit graphite block.

[0014] Furthermore, the upper limit graphite block is fixed inside the grooved cover plate, one side of the grooved cover plate is hinged to a fixed plate located on one side, and the other side of the grooved cover plate is connected to a fixed plate located on the other side via a quick-locking clamp.

[0015] Furthermore, a support plate is provided at a lateral interval on the lower side of the pair of fixed plates.

[0016] Furthermore, the atomizing spray device includes a spray pipe disposed in the water tank and located above and below the limiting mechanism, and a plurality of atomizing nozzles facing the strip material are installed on the spray pipe at transverse intervals.

[0017] Furthermore, a water outlet pipe is provided on the lower side wall of the water tank, and a pump body connected to the spray pipe via a pipeline is installed on the water outlet pipe.

[0018] Furthermore, a filter is installed inside the water tank at the inlet end of the outlet pipe, a drain pipe is provided on the other side wall of the lower part of the water tank, and an inlet pipe is provided at the upper part of the water tank.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. This control method restricts the conveying direction of the strip by placing graphite blocks at intervals along the output direction of the strip in the water tank, thereby limiting the left and right sway of the strip, improving the curvature of the strip and increasing its straightness.

[0021] 2. Using graphite blocks as limiting components for strip materials is not only resistant to high temperatures, but also provides good lubrication and will not damage the surface of the strip materials.

[0022] 3. By installing spray pipes on both the upper and lower sides of the strip material in the water tank, the strip material can be cooled more evenly, further improving the curvature of the strip material, while reducing the volume of the water tank and the space occupied. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the continuous extrusion strip straightness control device of the present invention;

[0024] Figure 2 For the present invention Figure 1 Enlarged view of area A;

[0025] Figure 3 The application relates to Figure 1 a B-B sectional view of the application;

[0026] In the figure: 10 - water tank 11 - strip material inlet 12 - strip material outlet 13 - drain pipe 14 - water inlet pipe 20 - limiting mechanism 21 - lower limiting graphite block 211 - channel 22 - upper limiting graphite block 23 - groove-shaped cover plate 231 - locking bolt 24 - quick locking clamp 31 - spraying pipe 32 - atomizing nozzle 33 - water outlet pipe 331 - water supplement pipe 34 - pump body 35 - filter 40 - fixed plate 41 - partition plate 42 - fixed groove 43 - locking bolt 44 - bottom plate 50 - supporting plate 51 - hollow hole. DETAILED DESCRIPTION

[0027] In order to make the above features and advantages of the application more apparent, the following specific examples are described in detail below, and the accompanying drawings are referred to, but the application is not limited thereto.

[0028] Reference Figures 1 to 3

[0029] A continuous extrusion strip flatness control method, comprising the following steps:

[0030] 1) In the water tank 10 on the output side of the continuous extrusion machine, and on both sides of the water tank, a strip material inlet 11 and a strip material outlet 12 are arranged, and a plurality of limiting mechanisms 20 are arranged on the same straight line and are spaced apart between the strip material inlet and the strip material outlet; the limiting mechanism comprises a lower limiting graphite block 21 fixed in a pair of fixed plates, the upper surface of the lower limiting graphite block is transversely provided with a channel 211 for the strip-shaped strip material to pass through and limit the left-right direction of the strip-shaped strip material, and an upper limiting graphite block 22 capable of being opened and closed is arranged on the upper side of the lower limiting graphite block, and the upper limiting graphite block cooperates with the channel to limit the up-down direction of the strip-shaped strip material;

[0031] 2) An atomizing spraying device is arranged in the water tank and faces the strip-shaped strip material, the atomizing spraying device comprises a spraying pipe 31 arranged in the water tank and located on the upper and lower sides of the limiting mechanism, a plurality of atomizing nozzles 32 facing the strip-shaped strip material are transversely arranged on the spraying pipe, so that the cooling water is atomized and sprayed on the strip-shaped strip material through the atomizing nozzles, which helps to ensure that the strip-shaped strip material is cooled more uniformly;

[0032] 3) The upper limiting graphite block of each limiting mechanism is opened upward respectively, the strip-shaped strip material output by the continuous extrusion machine is sent into the water tank through the strip material inlet, the atomizing spraying device is continuously opened, and the water mist covers the water tank;

[0033] 4) Let the strip-shaped band material through the channel of the lower limiting graphite block in turn and at a uniform speed, cover and lock the upper limiting graphite block with the lower limiting graphite block, limit the strip-shaped band material through the channel pair, and finally output from the strip-shaped band material outlet, so as to send to the next process.

[0034] In the embodiment, the center lines of the channels are located on the same straight line, so as to ensure the flatness of the strip-shaped band material and improve the bending degree of the strip-shaped band material.

[0035] In the embodiment, a pair of fixed plates 40 is installed between the band material inlet and the band outlet in the water tank, and the limiting mechanisms are arranged in the pair of fixed plates in the transverse direction, so as to effectively control the bending degree of the strip-shaped band material through the cooperation of the limiting mechanisms. The two ends of the fixed plate can be fixedly connected with the water tank.

[0036] In the embodiment, a plurality of pairs of partition plates 41 are welded in the transverse direction in the fixed plate, a bottom plate 44 is arranged on the lower side of a pair of partition plates and cooperates with the fixed plate to form a fixed groove 42, and the lower limiting graphite block is arranged in the fixed groove and locked by the locking mechanism. Specifically, the locking mechanism includes two pairs of locking bolts 43 screwed on the fixed plate, one end of the locking bolt penetrates the lower limiting graphite block, so as to realize the locking of the lower limiting graphite block. At the same time, it is also convenient for the replacement of the lower limiting graphite block.

[0037] In the embodiment, a plurality of support plates 50 are fixed in the transverse direction in the water tank, the upper end of the support plate is fixedly connected with the bottom surface of the fixed plate or the bottom surface of the bottom plate, so as to reduce the downward bending of the fixed plate and ensure that the limiting mechanism is located on the same straight line. The bottom of the support plate is provided with a hollow hole 51, so as to connect the water in the water tank.

[0038] In the embodiment, the upper limiting graphite block is fixed in the groove-shaped cover plate 23, and a pair of locking bolts 231 screwed with the upper limiting graphite block are vertically arranged on the groove-shaped cover plate. One side of the groove-shaped cover plate is hingedly connected with the fixed plate on one side through a hinge, and the other side of the groove-shaped cover plate is connected with the fixed plate on the other side through a quick locking clamp 24, so as to realize the opening and closing of the upper limiting graphite block and the locking cooperation with the lower limiting graphite block. The use of the quick locking clamp facilitates the quick locking of the upper limiting graphite block and the lower limiting graphite block, and the quick locking clamp is a commercially available component.

[0039] In the embodiment, in order to realize the recycling of water in the water tank, a water outlet pipe 33 is arranged on one side wall of the lower part of the water tank, a pump body 34 connected with the spraying pipe through a pipeline is installed on the water outlet pipe, so as to supply the spraying pipe through the pump body. In order to filter out impurities in the water and avoid clogging of the atomizing nozzle, a filter 35 is installed at the input end of the water outlet pipe in the water tank.

[0040] In the embodiment, in order to facilitate the water in the sink to be replaced and cleaned, the other side wall of the lower part of the sink is provided with a drain pipe 13. The upper part of the sink is provided with a water inlet pipe 14, facilitating the water replenishment of the sink.

[0041] In the embodiment, the water replenishment pipe 331 is further connected to the water outlet pipe.

[0042] In the embodiment, three rows of spray pipes are arranged in the sink and on the upper and lower sides of the limiting mechanism, the cooling water flow is 90-110 L / min, and the water pressure is 0.9-1.2 MPa. Specifically, the cooling water flow can be 100 L / min, and the water pressure is 1.0 MPa. The output speed of the strip-shaped strip material is the normal output speed of the continuous extrusion machine.

[0043] The above only describes the preferred embodiment of the present application. According to the teaching of the present application, a person skilled in the art can design different forms of the continuous extrusion strip flatness control method without creative labor, and any equivalent change, modification, replacement and transformation made within the scope of the present application should be included in the scope of the present application.

Claims

1. A method of controlling flatness of a continuously extruded strip, characterized by, It comprises the following steps: 1) a plurality of limiting mechanisms are installed in the water tank on the output side of the continuous extruder and are spaced apart along a straight line between the strip material inlet and the strip material outlet of the water tank, and a slot is provided on the limiting mechanism for the strip material to pass through; a pair of fixed plates are installed in the water tank between the strip material inlet and the strip material outlet, and the limiting mechanisms are spaced apart along the transverse direction between the pair of fixed plates; the limiting mechanism comprises a lower limiting graphite block fixed in the pair of fixed plates, and a slot is provided on the upper surface of the lower limiting graphite block in the transverse direction, and an upper limiting graphite block capable of being opened and closed is provided on the upper side of the lower limiting graphite block; a fixed slot is provided in the pair of fixed plates in the transverse direction, and the lower limiting graphite block is arranged in the fixed slot and locked by a locking mechanism; the locking mechanism comprises two pairs of locking bolts screwed on the fixed plate, one end of the locking bolt penetrating into the lower limiting graphite block; the upper limiting graphite block is fixed in the slot-shaped cover plate, one side of the slot-shaped cover plate is hinged to the fixed plate on one side, and the other side of the slot-shaped cover plate is connected to the fixed plate on the other side through a quick locking clamp; 2) an atomizing spraying device is installed in the water tank towards the strip material; 3) the atomizing spraying device is turned on, the strip material output by the continuous extruder is fed into the water tank from the strip material inlet, and then uniformly passes through the slots of the limiting mechanisms at a constant speed, the strip material is limited by the slots, and finally is output from the strip material outlet.

2. A method of controlling flatness of a continuously extruded strip as claimed in claim 1, wherein A support plate is provided on the lower side of the pair of fixed plates in the transverse direction.

3. The method of claim 1, wherein the method further comprises: The atomizing spraying device comprises a spraying pipe provided in the water tank and located above and below the limiting mechanism, and a plurality of atomizing nozzles are installed on the spraying pipe in the transverse direction towards the strip material.

4. A method of controlling flatness of a continuously extruded strip according to claim 3, wherein A water outlet pipe is provided on one side wall of the lower part of the water tank, and a pump body connected to the spraying pipe through a pipeline is installed on the water outlet pipe.

5. A method of controlling flatness of a continuously extruded strip as claimed in claim 4, wherein A filter is installed in the water tank at the input end of the water outlet pipe, a drain pipe is provided on the other side wall of the lower part of the water tank, and a water inlet pipe is provided on the upper part of the water tank.

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