Continuous extrusion strip straightness control method

Abstract

The invention relates to a continuous extrusion strip straightness control method, which comprises the following steps that (1) a plurality of limiting mechanisms positioned on the same straight line are arranged in a water tank on the output side of a continuous extrusion machine and between a strip inlet and a strip outlet of the water tank at intervals, and the limiting mechanisms are provided with channels for strip-shaped strips to pass through; (2) an atomization spraying device facing the strip-shaped strip is installed in the water tank; 3, the atomization spraying device is started, the strip-shaped strips output by the continuous extruding machine are fed into the water tank through the strip inlet, sequentially penetrate through a groove channel of the limiting mechanism at a constant speed, are limited through the groove channel and are finally output from the strip export. According to the control method, the conveying direction of the strips can be limited easily, and the bending degree of the strips is improved.

Description

Technical Field

[0001] The invention relates to a method for controlling the straightness of a continuously extruded strip. Background Art

[0002] In the production process of aluminum strip, the aluminum material containing alloy needs to be continuously extruded to form a strip with a rectangular cross section, and then the strip is formed into a thin sheet of aluminum strip through subsequent rolling and other processes. The temperature of the strip is usually around 560℃ when it is continuously extruded, and the strip needs to be cooled quickly to produce a solid solution of the alloy inside.

[0003] The existing cooling method is to allow the continuously extruded strip to pass into a long trough filled with water for cooling. However, due to the uneven cooling of the strip passed into the water trough and the lack of restriction on the orientation of the strip in the long trough, the strip will inevitably swing left and right, twist and deform, forming a wave-like shape, which will affect the subsequent flattening and forming quality of the strip.

[0004] Therefore, a method is needed to improve the curvature of the strip. Summary of the invention

[0005] The object of the present invention is to provide a method for controlling the straightness of a continuously extruded strip, which helps to limit the conveying orientation of the strip and improve the curvature of the strip.

[0006] The technical solution of the present invention is: a method for controlling the flatness of a continuously extruded strip, comprising the following steps: 1) In the water tank at the output side of the continuous extruder, a plurality of limiting mechanisms located on the same straight line are installed at intervals between the strip inlet and the strip outlet of the water tank, and the limiting mechanisms are provided with a channel for the strip to pass through; 2) Install an atomizing spray device in the water tank toward the strip material; 3) Turn on the atomizing spray device, and the strip material output by the continuous extruder is sent into the water tank from the strip material inlet, and passes through the groove of the limiting mechanism at a uniform speed in turn, and the strip material is limited by the groove, and finally output from the strip material outlet.

[0007] Furthermore, a pair of fixing plates are installed in the water tank between the strip inlet and the strip tank outlet, and a limiting mechanism is arranged between the pair of fixing plates along a lateral interval.

[0008] Furthermore, the limiting mechanism comprises a lower limiting graphite block fixed to a pair of fixed plates, a groove is arranged laterally on the upper surface of the lower limiting graphite block, and an upper limiting graphite block capable of flipping open and close is arranged on the upper side of the lower limiting graphite block.

[0009] Furthermore, the pair of fixing plates are provided with fixing grooves at intervals along the lateral direction, and the lower limit graphite block is arranged in the fixing grooves and locked by a locking mechanism.

[0010] Furthermore, the locking mechanism comprises two pairs of locking bolts screwed to the fixing plate, and one end of the locking bolts penetrates into the lower limit graphite block.

[0011] Furthermore, the upper limit graphite block is fixed in the groove-shaped cover plate, one side of the groove-shaped cover plate is hinged to the fixed plate on one side, and the other side of the groove-shaped cover plate is connected to the fixed plate on the other side via a quick locking clamp.

[0012] Furthermore, support plates are arranged at intervals along the lateral direction on the lower sides of the pair of fixing plates.

[0013] Furthermore, the atomizing spray device comprises a spray pipe arranged in the water tank and located on the upper and lower sides of the limiting mechanism, and a plurality of atomizing nozzles facing the strip material are installed at intervals along the spray pipe in a transverse direction.

[0014] Furthermore, a water outlet pipe is provided on a side wall of the lower part of the water tank, and a pump body connected to the spray pipe through a pipeline is installed on the water outlet pipe.

[0015] Furthermore, a filter is installed at the input end of the water outlet pipe in the water tank, a drain pipe is arranged on the other side wall of the lower part of the water tank, and a water inlet pipe is arranged on the upper part of the water tank.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The control method limits the conveying direction of the strip by arranging graphite blocks at intervals along the output direction of the strip in the water tank, limits the left and right swing of the strip, thereby improving the curvature of the strip and improving the straightness of the strip.

[0017] 2. Using graphite blocks as the limiters of the strips is not only resistant to high temperatures but also has good lubrication and will not damage the surface of the strips.

[0018] 3. By arranging spray pipes on the upper and lower sides of the strip in the water tank, the strip can be cooled more evenly, further improving the curvature of the strip. At the same time, the volume of the water tank can be reduced, reducing the occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the continuous extruded strip straightness control device of the present invention; Figure 2 For the present invention Figure 1 A magnified image of area A; Figure 3 For the present invention Figure 1 BB cross-sectional view; In the figure: 10-water tank 11-strip inlet 12-strip outlet 13-drain pipe 14-water inlet pipe 20-limiting mechanism 21-lower limit graphite block 211-groove 22-upper limit graphite block 23-groove cover 231-locking bolt 24-quick locking clamp 31-spray pipe 32-atomizing nozzle 33-water outlet pipe 331-water supply pipe 34-pump body 35-filter 40-fixing plate 41-partition plate 42-fixing groove 43-locking bolt 44-bottom plate 50-support plate 51-hollow hole. DETAILED DESCRIPTION

[0020] In order to make the above features and advantages of the present invention more easily understood, embodiments are given below with reference to the accompanying drawings for detailed description, but the present invention is not limited thereto.

[0021] refer to Figures 1 to 3 A method for controlling the flatness of a continuously extruded strip comprises the following steps: 1) In the water tank 10 at the output side of the continuous extruder, a strip inlet 11 and a strip outlet 12 are arranged on both sides of the water tank, and a plurality of limiting mechanisms 20 located on the same straight line are installed at intervals between the strip inlet and the strip outlet; the limiting mechanism comprises a lower limiting graphite block 21 fixed in a pair of fixed plates, and a groove 211 is transversely arranged on the upper surface of the lower limiting graphite block for the strip to pass through and limit the strip in the left and right directions, and an upper limiting graphite block 22 that can be turned over and opened is arranged on the upper side of the lower limiting graphite block, and the upper limiting graphite block cooperates with the groove to limit the strip in the up and down directions; 2) An atomizing spray device facing the strip is installed in the water tank, the atomizing spray device includes a spray pipe 31 arranged in the water tank and located on the upper and lower sides of the limiting mechanism, and a plurality of atomizing nozzles 32 facing the strip are installed at intervals along the spray pipe, so that cooling water is atomized and sprayed on the strip through the atomizing nozzle, which helps to ensure that the strip is cooled more evenly; 3) Open the upper limit graphite blocks of each limit mechanism upwards respectively, let the strips output by the continuous extruder be sent into the water tank from the strip inlet, and keep the atomizing spray device open to make the water mist fill the water tank; 4) Allow the strip to pass through the groove of the lower limit graphite block in sequence and at a uniform speed, cover and lock the upper limit graphite block and the lower limit graphite block, limit the strip through the groove, and finally output from the strip outlet to send to the next process.

[0022] In this embodiment, the center lines of the grooves are located on the same straight line, so as to ensure the straightness of the strip material and improve the curvature of the strip material.

[0023] In this embodiment, a pair of fixing plates 40 are installed in the water tank between the strip inlet and the strip tank outlet, and the limiting mechanism is arranged between the pair of fixing plates at intervals in the transverse direction, and the curvature of the strip is effectively controlled by the cooperation of multiple limiting mechanisms. Both ends of the fixing plate can be fixedly connected to the water tank.

[0024] In this embodiment, a plurality of pairs of partitions 41 are welded at intervals along the horizontal direction in the fixing plate, a bottom plate 44 is arranged at the lower side of a pair of partitions and cooperates with the fixing plate to form a fixing groove 42, and the lower limit graphite block is arranged in the fixing groove and locked by a locking mechanism. Specifically, the locking mechanism includes two pairs of locking bolts 43 screwed to the fixing plate, one end of the locking bolts penetrates the lower limit graphite block, thereby locking the lower limit graphite block. At the same time, it is also convenient to replace the lower limit graphite block.

[0025] In this embodiment, a plurality of support plates 50 are fixed in the water tank at intervals along the horizontal direction, and the upper ends of the support plates are fixedly connected to the bottom surface of the fixing plate or the bottom surface of the bottom plate, thereby reducing the downward bending of the fixing plate and ensuring that the limiting mechanism is located on the same straight line. A hollow hole 51 is provided at the bottom of the support plate to facilitate the water in the water tank to communicate.

[0026] In this embodiment, the upper limit graphite block is fixed in the grooved cover plate 23, and a pair of locking bolts 231 are vertically penetrated on the grooved cover plate and are screwed to the upper limit graphite block. One side of the grooved cover plate is hinged to the fixed plate on one side through a hinge, and the other side of the grooved cover plate is connected to the fixed plate on the other side through a quick locking fixture 24, so as to realize the flipping opening and closing of the upper limit graphite block and the locking cooperation with the lower limit graphite block. The use of the quick locking fixture is conducive to the quick locking of the upper limit graphite block and the lower limit graphite block, and the quick locking fixture is an existing commercially available finished component.

[0027] In this embodiment, in order to realize the recycling of water in the water tank, a water outlet pipe 33 is provided on the lower side wall of the water tank, and a pump body 34 connected to the spray pipe through a pipeline is installed on the water outlet pipe, so as to supply the spray 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.

[0028] In this embodiment, in order to facilitate the replacement and cleaning of water in the water tank, the other side wall of the lower part of the water tank is provided with a drain pipe 13. The upper part of the water tank is provided with a water inlet pipe 14 to facilitate the water replenishment of the water tank.

[0029] In this embodiment, a water supply pipe 331 is externally connected to the water outlet pipe.

[0030] In this embodiment, three rows of spray pipes can be respectively arranged in the water tank and on the upper and lower sides of the limit mechanism, with a cooling water flow rate of 90-110 L / min and a water pressure of 0.9-1.2 MPa. Specifically, the cooling water flow rate can be 100 L / min and the water pressure can be 1.0 MPa. The output speed of the strip material can be the normal output speed of the continuous extruder.

[0031] The above description is only a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, designing different forms of continuous extruded strip flatness control methods does not require creative labor. Without departing from the principles and spirit of the present invention, all equal changes, modifications, substitutions and variations made within the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A method for controlling the flatness of a continuously extruded strip, characterized in that: The following steps are involved: 1) In the water tank at the output side of the continuous extruder, a plurality of limiting mechanisms located on the same straight line are installed at intervals between the strip inlet and the strip outlet of the water tank, and the limiting mechanisms are provided with a channel for the strip to pass through; 2) Install an atomizing spray device in the water tank toward the strip material; 3) Turn on the atomizing spray device, and the strip material output by the continuous extruder is sent into the water tank from the strip material inlet, and passes through the groove of the limiting mechanism at a uniform speed in turn, and the strip material is limited by the groove, and finally output from the strip material outlet.

2. A method for controlling the straightness of a continuously extruded strip according to claim 1, characterized in that: A pair of fixing plates are installed in the water tank between the strip inlet and the strip tank outlet, and a limiting mechanism is arranged between the pair of fixing plates along a lateral interval.

3. A method for controlling the straightness of a continuously extruded strip according to claim 2, characterized in that: The limiting mechanism comprises a lower limiting graphite block fixed in a pair of fixed plates, a groove is arranged transversely on the upper surface of the lower limiting graphite block, and an upper limiting graphite block capable of flipping and opening is arranged on the upper side of the lower limiting graphite block.

4. A method for controlling the straightness of a continuously extruded strip according to claim 3, characterized in that: A pair of fixing plates are provided with fixing grooves at intervals along the lateral direction, and the lower limit graphite block is arranged in the fixing grooves and locked by a locking mechanism.

5. A method for controlling the straightness of a continuously extruded strip according to claim 4, characterized in that: The locking mechanism comprises two pairs of locking bolts which are screwed on the fixing plate, and one end of the locking bolts penetrates into the lower limit graphite block.

6. A method for controlling the flatness of a continuously extruded strip according to claim 3, 4 or 5, characterized in that: The upper limit graphite block is fixed in the groove cover plate, one side of the groove cover plate is hinged to the fixed plate on one side, and the other side of the groove cover plate is connected to the fixed plate on the other side via a quick locking clamp.

7. A method for controlling the flatness of a continuously extruded strip according to claim 2, 3, 4 or 5, characterized in that: Support plates are arranged at intervals along the lateral direction on the lower sides of the pair of fixing plates.

8. A method for controlling the flatness of a continuously extruded strip according to claim 1, 2, 3, 4 or 5, characterized in that: The atomizing spray device comprises a spray pipe which is arranged in the water tank and located on the upper and lower sides of the limiting mechanism. A plurality of atomizing nozzles facing the strip material are installed at intervals along the spray pipe in the transverse direction.

9. A method for controlling the straightness of a continuously extruded strip according to claim 8, characterized in that: A water outlet pipe is arranged on one side wall of the lower part of the water tank, and a pump body connected with the spray pipe through a pipeline is installed on the water outlet pipe.

10. A method for controlling the straightness of a continuously extruded strip according to claim 9, characterized in that: A filter is installed at the input end of the water outlet pipe in the water tank, a drain pipe is arranged on the other side wall of the lower part of the water tank, and a water inlet pipe is arranged on the upper part of the water tank.

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