H-beam sawing method

Abstract

The present invention relates to the technical field of H-beam processing, and specifically to a method for sawing H-beams, comprising the following steps: S1, the head of the first group of H-beams is moved to a fixed saw via a transmission roller, the sawing head is fixed, the steel is moved, and the fixed saw and the mobile saw simultaneously saw and cut the first group of H-beams to a predetermined length; S2, the steel is moved, the tail of the first group of H-beams is moved to a fixed saw for cutting, and the second group of H-beams is moved and the mobile sawing head is used; S3, the steel is moved, and the fixed saw and the mobile saw simultaneously saw and cut the second group of H-beams to a predetermined length; S4, the steel is moved, and the second group of H-beams executes steps S2 and S3 until the sawing of the Nth group of H-beams is completed. The mobile saw of the sawing method provided by the present invention can saw the head slope of the rolled piece, reduce the waiting time of the mobile saw when the fixed sawing is used to cut the head and tail, and at the same time shorten the sawing time in the entire sawing process, improve the sawing efficiency, improve the production operation rate, and reduce the production cost.

Description

Technical Field

[0001] The invention relates to the technical field of H-beam processing, and in particular to an H-beam sawing method. Background Art

[0002] Hot-rolled H-shaped steel is widely used in the construction industry, machinery industry, bridge manufacturing industry and other industries due to its good cross-sectional economy. When H-shaped steel is used, it generally involves processing techniques such as butt welding and assembly, so the appearance and shape quality of the finished product are required to be high.

[0003] The basic process flow of hot-rolled H-beam is: continuous casting → heating → high-pressure water descaling → BD roughing mill → continuous rolling of finishing mill → cooling on cooling bed → straightening → sawing → inspection and bundling, among which: the cold sawing process affects the appearance of the cross section. The sawing process is performed in the form of sawing according to the different length requirements of the product. Each sawing production line consists of a fixed saw and a mobile saw. Whether it is a fixed saw or a mobile saw, it is collectively referred to as a horizontal slide cold saw machine, which is mainly composed of an upper and lower slide of the saw machine, a saw blade spindle box, a saw machine motor, a transmission mechanism, an upper slide constraint gear train, a saw machine feed mechanism, a saw machine lubrication system, and a saw blade cooling system. When sawing, such as Figure 1 As shown, the drive roller 4 is used to pull the rolled piece 6 to the specific position as shown in the figure, the head of the rolled piece 6 is located at the second unloading port 2, the second unloading port 2 includes a head unloading port on the left and a tail unloading port on the right, the fixed saw 3 saws the head slope of the rolled piece 6, and the sawed waste falls through the head unloading port of the second unloading port 2 to the fixed saw unloading collection device 1 for discharge, the steel is moved to the head of the rolled piece 6 and aligned with the sizing machine 9, the fixed saw 3 and the mobile saw 5 cut the sizing at the same time, and then the steel is moved to the tail of the rolled piece 6 at the tail unloading port of the second unloading port 2, the fixed saw 3 saws the tail slope, and the mobile saw 5 is in a waiting state.

[0004] The technical defects of the above sawing method are: first, because the fixed saw has auxiliary equipment for the feed opening, the waste head after sawing can be removed from the feed opening, so the fixed saw can saw the head and tail slope parts of the rolled piece; second, the saw body of the fixed saw itself cannot move in the direction of the fixed length of the rolled piece, and can only saw the rolled piece in sections at one position, so it is called a fixed saw. The mobile saw can move in the direction of the fixed length of the rolled piece, but has no auxiliary equipment for the feed opening, and the waste head after sawing cannot be removed, so the mobile saw has only one function, that is, sawing the fixed length, and cannot cut the head and tail, so the task of cutting the head and tail lies entirely with the fixed saw. Therefore, the fixed saw is only used to perform the sawing method of cutting the head first and then the tail, which seriously restricts the improvement of the rolling rhythm. The impact is manifested in the rolling of 400mm×400mm, 588mm×300mm, 800mm×300mm, and 900mm×300mm steel specifications. Since these specifications are cut by a single saw, the sawing speed is slow, and the rolling speed is fast, the sawing rhythm is slower than the rolling rhythm, forcing the rolling area to reduce the steel output speed or the rolling speed. Summary of the invention

[0005] In view of the technical problem of low H-beam sawing efficiency, the present invention provides an H-beam sawing method, which can improve the processing efficiency during H-beam production and save costs.

[0006] The present invention provides an H-beam sawing method, comprising the following steps:

[0007] S1. The head of the first group of H-shaped steel is moved to the fixed saw via a transmission roller, the saw head is fixed, the steel is moved, and the fixed saw and the mobile saw simultaneously saw and cut the first group of H-shaped steel to the specified length;

[0008] S2, steel moving, the tail of the first group of H-beams is moved to the fixed saw for cutting, while the second group of H-beams is moved and cut by the mobile saw head;

[0009] S3, move the steel, and the fixed saw and the mobile saw simultaneously cut the second set of H-shaped steel to the specified length;

[0010] S4, move the steel, and execute steps S2 and S3 for the second group of H-beams until the sawing of the Nth group of H-beams is completed.

[0011] Furthermore, in step S1, after the sawing head is moved, the scrap steel is discharged through the mobile saw cutting collection device.

[0012] Furthermore, the mobile saw material collection device includes a first material discharge port and a collection and outlet device.

[0013] Furthermore, the first unloading port is arranged between two adjacent driving rollers of the driving roller conveyor.

[0014] Furthermore, the collecting and exporting device includes a collecting port, which is located directly below the first feeding port and is trumpet-shaped.

[0015] Furthermore, a material guiding slideway connected to the collecting port is provided at the bottom thereof, and the material guiding slideway is arranged at an inclination.

[0016] Furthermore, the distance between the first material discharge port and the fixed saw is 12m.

[0017] Furthermore, the present invention is applicable to sawing of H-shaped steels of all specifications. Furthermore, the applicable H-shaped steel specifications are one of 400mm×400mm, 588mm×300mm, 800mm×300mm, and 900mm×300mm.

[0018] The beneficial effects of the present invention are as follows: the mobile saw of the sawing method provided by the present invention can saw the head slope of the rolled piece, reducing the waiting time of the mobile saw when the head and tail are fixedly sawed, while shortening the sawing time in the entire sawing process, improving the sawing efficiency, improving the production operation rate, and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the structure of an existing sawing device.

[0021] Figure 2 It is a schematic diagram of the H-beam sawing structure according to a specific embodiment of the present invention.

[0022] Figure 3 It is a front view of a mobile saw material collection device according to a specific embodiment of the present invention.

[0023] Figure 4 yes Figure 3 Left view.

[0024] In the figure, 1-fixed saw material collection device, 2-second material discharge port, 3-fixed saw, 4-transmission roller, 5-mobile saw, 6-rolled product, 7-first material discharge port, 8-collection and export device, 81-collection port, 82-material guide slide, 9-sizing machine, 10-first group of H-beams, 11-second group of H-beams. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] Example 1

[0027] like Figure 2 , 3 4. The mobile saw material collection device of the present invention comprises a first material discharge port 7 and a collection and guide device 8. The first material discharge port 7 is arranged between two adjacent driving rollers of the driving roller 4, and the first material discharge port 7 is located at a distance of 12m from the fixed saw 3, and the movable distance of the mobile saw 5 is 6 to 18m.

[0028] The collecting and exporting device 8 comprises a collecting port 81, which is located directly below the first material discharge port 7 and is trumpet-shaped. A material guide slide 82 is provided at the bottom of the collecting port 81 and is connected thereto, and the material guide slide 82 is inclined to facilitate the oblique export of sawing waste.

[0029] Example 2

[0030] Combination Figure 2 The H-beam sawing method of the present invention comprises the following steps:

[0031] S1, the head of the first group of H-shaped steel 10 is moved to the fixed saw 3 via the transmission roller 4, the fixed saw 3 cuts the head, moves the steel, and the fixed saw 3 and the mobile saw 5 simultaneously cut the first group of H-shaped steel 10 to the specified length;

[0032] S2, moving the steel, the tail of the first group of H-shaped steel 10 is moved to the fixed saw 3 for cutting, and the head of the second group of H-shaped steel 11 is moved to the first unloading port 7, and the head is cut by the mobile saw 5, and the head waste is collected and discharged by the collecting and discharging device 8;

[0033] S3, moving the steel, the fixed saw 3 and the mobile saw 5 simultaneously saw and cut the second group of H-beams 11 to the specified length;

[0034] S4, moving the steel, the second group of H-beams 11 executes steps S2 and S3 until the sawing of the Nth group of H-beams is completed.

[0035] This embodiment saws and cuts a 12-meter-long H-shaped steel to size. After sawing, compared with the existing sawing method, it saves 1 processing coefficient, 1 transportation number, 12 meters of transportation distance, and 0.33 minutes of time.

[0036] Although the present invention has been described in detail with reference to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person of ordinary skill in the art may easily think of changes or substitutions within the technical scope disclosed by the present invention, and these shall be within the scope of protection of the present invention.

Claims

1. A method for sawing H-shaped steel, characterized in that: The steps include: S1. The head of the first group of H-shaped steel is moved to the fixed saw via a transmission roller, the saw head is fixed, the steel is moved, and the fixed saw and the mobile saw simultaneously saw and cut the first group of H-shaped steel to the specified length; S2, steel moving, the tail of the first group of H-beams is moved to the fixed saw for cutting, while the second group of H-beams is moved and cut by the mobile saw head; S3, move the steel, and the fixed saw and the mobile saw simultaneously cut the second set of H-shaped steel to the specified length; S4, moving the steel, the second group of H-beams executes the step of cutting the tail at the fixed saw in step S2, the third group of H-beams executes the step of moving the sawing head in step S2 and step S3, and the above operations are repeated until the sawing of the Nth group of H-beams is completed; In step S2, after the sawing head is moved, the scrap steel is discharged through the mobile sawing material collection device; The mobile saw material collection device comprises a first material discharge port and a collection and outlet device.

2. The H-beam sawing method according to claim 1, characterized in that: The first unloading port is arranged between two adjacent driving rollers of the driving roller table.

3. The H-beam sawing method according to claim 1, characterized in that: The collecting and exporting device comprises a collecting port, which is located directly below the first feeding port and is trumpet-shaped.

4. The H-beam sawing method according to claim 3, characterized in that: A material guiding slideway connected to the collecting port is arranged at the bottom thereof, and the material guiding slideway is arranged in an inclined manner.

5. The H-beam sawing method according to claim 2, characterized in that: The distance between the first unloading port and the fixed saw is 12m.

6. The H-beam sawing method according to claim 1, characterized in that: The specifications of H-shaped steel are one of 400mm×400mm, 588mm×300mm, 800mm×300mm, and 900mm×300mm.

Images