WO2021032091A1 - 一种热轧带钢无头轧制中间坯连接系统及连接方法 - Google Patents

一种热轧带钢无头轧制中间坯连接系统及连接方法 Download PDF

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WO2021032091A1
WO2021032091A1 PCT/CN2020/109835 CN2020109835W WO2021032091A1 WO 2021032091 A1 WO2021032091 A1 WO 2021032091A1 CN 2020109835 W CN2020109835 W CN 2020109835W WO 2021032091 A1 WO2021032091 A1 WO 2021032091A1
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shearing device
cutting edge
shearing
slab
mounting frame
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PCT/CN2020/109835
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English (en)
French (fr)
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高爱民
韩会全
王万慧
周民
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中冶赛迪技术研究中心有限公司
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Priority to US17/635,708 priority Critical patent/US20220288660A1/en
Application filed by 中冶赛迪技术研究中心有限公司 filed Critical 中冶赛迪技术研究中心有限公司
Priority to JP2022511012A priority patent/JP7224534B2/ja
Publication of WO2021032091A1 publication Critical patent/WO2021032091A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0085—Joining ends of material to continuous strip, bar or sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B21B2015/0014—Cutting or shearing the product transversely to the rolling direction

Definitions

  • the invention belongs to the technical field of intermediate billet connection for endless rolling of strip steel, and in particular relates to a connection system and a connection method for an intermediate billet of hot rolled strip endless rolling.
  • the traditional hot strip hot continuous rolling finishing mills are all rolled with a single intermediate billet.
  • the processes of tape threading, accelerated rolling, decelerated rolling, steel throwing, and tail flicking are inevitable. Therefore, it is difficult to ensure the thickness difference between the head and tail of the strip and the uniformity of the threading quality, and the rolling production rate and the yield rate are also subject to certain restrictions.
  • the hot-rolled strip endless rolling technology shows the unparalleled superiority of traditional hot strip rolling in terms of ultra-thin hot strip rolling, plate thickness precision control, strip overall length performance stability control, and productivity improvement.
  • Intermediate billet connection technology is the key technology of endless rolling. It currently includes: stacked rolling crimping method, shear crimping method, welding method, mechanical connection method, reduction flame treatment connection method, direct current connection method, induction heating connection Method and laser welding method.
  • the existing intermediate blank connection technology has a very complicated structure, a large area, high investment cost, and a very complicated connection process.
  • the object of the present invention is to provide a hot-rolled strip steel endless rolling intermediate billet connection system and connection method, which meets the intermediate billet connection effect, while simplifying the structure and reducing the cost.
  • the present invention provides the following technical solutions:
  • a hot-rolled strip steel endless rolling intermediate billet connection system comprising an upper shearing device I, a lower shearing device I, an upper shearing device II and a lower shearing device II, an upper shearing device II and a lower shearing device II is located behind the upper shearing device I and the lower shearing device I;
  • the upper shearing device I includes an upper knife base I, an upper cutting blade I arranged on the upper knife base I, an upper pressing mechanism I that drives the upper knife base I to move up and down, and drives the upper knife base I to move forward and backward.
  • the upper translation mechanism I; the lower shearing device I is mainly composed of the lower knife seat I and the lower cutting edge I set on the lower knife seat I;
  • the upper cutting device II includes an upper knife base II, an upper cutting blade II arranged on the upper knife base II, and an upper pressing mechanism II that drives the upper knife base II to move up and down;
  • the lower cutting device II includes a lower knife base II.
  • the lower shearing blade II arranged on the lower knife holder II, and the lifting mechanism that drives the lower knife holder II to move up and down;
  • the upper cutting edge I is arranged above the lower cutting edge I and the cutting edge structure of the upper cutting edge I and the lower cutting edge I are the same; the upper cutting edge II is set directly above the lower cutting edge II and the upper cutting edge II and the lower cutting edge II The cutting edge structure of the upper cutting edge I and the lower cutting edge II are staggered to achieve the shearing of the front slab.
  • the cutting edge structures of the lower cutting edge I and the upper cutting edge II are staggered to Cooperate to realize the shearing of the rear slab; the upper reduction mechanism II is provided with a reduction detection device that controls the shearing amount of the upper shearing blade II and the lower shearing blade II.
  • the translational drive system is connected to the mounting frame and drives the mounting frame to move back and forth along the running direction of the unit.
  • the translational drive system is equipped with a displacement detection device that controls the moving speed of the mounting frame in real time to make the mounting frame Match the speed of the unit; the upper shearing device I and the lower shearing device I are arranged on the installation frame and located at the inlet end, and the upper and lower shearing device II are arranged on the installation frame and located at the outlet end.
  • the upper pressing mechanism I is installed on the upper translation mechanism I and connected with the upper tool holder I, and the upper translation mechanism I is installed on the mounting frame; the upper pressing mechanism II and the lifting mechanism correspond to the upper tool holder II and the lower tool holder II is connected and installed on the mounting frame.
  • the lower shearing device 1 also includes a lower translation mechanism I that drives the lower knife holder I to perform a forward and backward translation movement.
  • the lower translation mechanism I is installed on the mounting frame and connected with the lower tool holder 1.
  • the cutting edge structure of the upper cutting edge I and the lower cutting edge I is a dovetail cutting groove or dovetail rib
  • the cutting edge structure of the upper cutting edge II and the lower cutting edge II is a dovetail matching the dovetail cutting groove or dovetail rib. Raised ribs or dovetail cut grooves.
  • the cutting edge structures on the upper cutting edge II and the lower cutting edge II can pass through the cutting edge structures on the matching upper cutting edge I and the lower cutting edge I, and at the same time, the upper cutting edge I and the lower cutting edge
  • the widths of the staggered shearing blade structures on the blade II are different, and the widths of the staggered shearing blade structures on the lower shearing blade I and the upper shearing blade II are different, so that the front and rear slabs have extrusion deformation during shear connection.
  • a method for connecting intermediate billets of hot-rolled strip steel endless rolling mainly includes the following steps:
  • the shearing device located at the rear includes the upper shearing device II and the lower shearing device II, the upper shearing device II and the lower shearing device, which are arranged oppositely and vertically. II can be used for lifting movement;
  • the shearing device at the front includes the upper and lower shearing device I and the lower shearing device I, the upper shearing device I can respectively perform lifting movement and move back and forth along the operating direction of the unit;
  • the upper shearing device II and the lower shearing device II can work together to clamp the tail of the front slab and lift the front slab; in the front shearing device, the upper shearing device I and the lower shearing device I The shearing device I cooperates to clamp the lead of the rear slab; the rear shearing device cooperates with the front shearing device to realize that the tail of the front slab is located above the lead of the rear slab and partially overlaps;
  • the width of the shearing blade structure in the front and rear shearing devices is controlled so that the front and rear slabs have extrusion deformation when they are sheared and connected.
  • the lower shearing device I can also move back and forth along the operating direction of the unit.
  • the connecting system and the connecting method realize the matching of the intermediate billet connecting device and the unit speed through the translation drive system;
  • the installation frame is used to provide support for the shearing device, and the shearing device is divided into two groups and arranged in the installation frame to realize the front slab and the rear slab respectively. Clamping of the slab; and through the interlaced dovetail shear blade structure to achieve shearing and ensure a good longitudinal force state; finally, a certain difference in the width direction between the shear blades is set to ensure the formation of dovetail grooves
  • the connection process there is a certain extrusion deformation to enhance the connection effect; at the same time, a good intermediate billet connection effect is finally achieved, while the structure of the connection device is greatly simplified, and investment and operating costs are reduced.
  • Figure 1 is a schematic diagram of the structure of the connecting system of the hot-rolled strip endless rolling intermediate billet
  • Figure 2 is a schematic diagram of the cutting edge structure of the upper cutting edge I and the lower cutting edge I;
  • Figure 3 is a schematic diagram of the cutting edge structure of the upper cutting edge II and the lower cutting edge II;
  • Figure 4 is a schematic diagram of the connection between the front slab and the rear slab
  • Fig. 5 is a schematic diagram of the connecting steps of the intermediate billet of the endless rolling of the hot-rolled steel strip.
  • upper shearing device I upper knife seat I11, upper cutting blade I12, upper pressing and lowering mechanism I13, and upper translation mechanism I14;
  • lower shearing device I lower knife seat I21, lower cutting blade I22, and lower translation mechanism I23;
  • upper shearing device II upper knife holder II31, upper cutting blade II32, upper pressing mechanism II33;
  • lower shearing device II lower knife holder II41, lower cutting blade II42, and lifting mechanism 43.
  • Figure 1 is a hot-rolled strip steel endless rolling intermediate billet connecting system, including upper shearing device I1, lower shearing device I2, upper shearing device II3 and lower shearing device II4, The shearing device II3 and the lower shearing device II4 are located behind the upper shearing device I1 and the lower shearing device I2.
  • the upper shearing device I1 includes an upper knife base I11, an upper cutting blade I12 arranged on the upper knife base I11, an upper pressing mechanism I13 that drives the upper knife base I11 to move up and down, and a driving upper knife base I do the upper translation mechanism I14 for forward and backward translation.
  • the upper cutting blade I12 and the upper knife holder I11 can be driven by the upper translation mechanism I14 to move back and forth along the operating direction of the unit.
  • the upper cutting blade I12 and the upper knife holder I11 can also move up and down under the drive of the upper pressing mechanism I13. Through the back and forth and lifting movement, it can cooperate with the lower shearing device I to realize the clamping of the slab.
  • the lower cutting device I2 is mainly composed of a lower knife seat I21 and a lower cutting edge I22 arranged on the lower knife seat I21; when the lower cutting device I2 is arranged close to the lower cutting device II4, it can be fixedly arranged, through the upper cutting
  • the movement of the device I1 is coordinated with each other; when it is arranged at a distance from the lower shearing device II4, the lower shearing device I also includes a lower translation mechanism I23 that drives the lower knife holder I21 to move forward and backward, so that the upper shearing
  • the device I1 and the lower shearing device I2 can correspondingly realize the forward and backward movement of the upper knife holder I11 and the lower knife holder I21 through the upper translation mechanism I14 and the lower translation mechanism I23, so that they can cooperate with the rear shearing device.
  • the upper cutting device II3 includes an upper knife holder II31, an upper cutting blade II32 arranged on the upper knife holder II31, and an upper pressing mechanism II33 that drives the upper knife holder II to move up and down;
  • the lower cutting device II4 includes The lower knife holder II41, the lower cutting blade II42 arranged on the lower knife holder II41, and the lifting mechanism 43 that drives the lower knife holder II to move up and down.
  • the upper tool holder II is driven by the upper pressing mechanism II33 for lifting movement
  • the lower tool holder II41 is driven by the lifting mechanism 43 for lifting movement. The two cooperate with each other to realize the clamping of the slab.
  • the upper shearing device II3 and the lower shearing device II4 are arranged behind the upper shearing device I1 and the lower shearing device I2, and the upper shearing device I1 and the lower shearing device I2 are correspondingly passed through the upper translation mechanism I14 ,
  • the lower translation mechanism I23 realizes the forward and backward movement of the upper knife seat I11 and the lower knife seat I21, so that under the adjustment of lifting and moving, the clamping and superimposing of the slab and the mutual cooperation of the upper cutting edge of the knife seat can be realized. It can realize the shear connection of the slab.
  • the upper cutting edge I12 is arranged above the lower cutting edge I22 and the cutting edge structure of the upper cutting edge I12 and the lower cutting edge I22 is the same; the upper cutting edge II32 is arranged directly above the lower cutting edge II42 and the upper cutting edge II32 is opposite to the lower cutting edge I22.
  • the cutting edge structure of the cutting edge II42 is the same; the cutting edge structures of the upper cutting edge I and the lower cutting edge II, and the lower cutting edge I and the upper cutting edge II are arranged alternately.
  • the cutting process is realized by the cooperation of two sets of cutting devices set up front and back, and the connection is realized simultaneously while cutting.
  • the above solution also includes a mounting frame 5 and a translational drive system 6.
  • the translational drive system 6 is connected to the mounting frame 5 and drives the mounting frame to move back and forth along the unit running direction.
  • the upper shearing device I1 and the lower shearing device I2 are provided On the installation frame and at the inlet end, the upper shearing device II3 and the lower shearing device II4 are arranged in the installation frame 5 and at the outlet end.
  • the upper pressing and lowering mechanism I13 is installed on the upper translation mechanism I14 and connected to the upper knife holder I11, and the upper translation mechanism I14 is installed above the entrance side of the mounting frame, and the upper knife holder I11 can be on the upper Driven by the pressing mechanism I13 and the upper translation mechanism I14, they move up and down and back and forth in the installation frame correspondingly.
  • the lower shearing device I2 the lower knife holder I21 is installed on the lower translation mechanism I23 and driven by it, and the lower translation mechanism I23 is installed below the entrance side of the mounting frame.
  • the upper pressing mechanism II33 is correspondingly connected with the upper knife holder II31 and installed above the outlet side of the mounting frame.
  • the upper knife holder II31 is driven by the upper pressing mechanism II33 to move up and down in the mounting frame.
  • the lower knife holder II41 is installed under the outlet side of the mounting frame through the lifting mechanism 43, and the lower knife holder II41 and the shearing blade on it can be driven by the lifting mechanism 43 to move up and down in the mounting frame.
  • a reduction detection device is provided on the upper reduction mechanism II33, which is used to precisely control the shearing amount of the cutting blade to meet the requirements of different slab thicknesses.
  • the above-mentioned mounting frame 5 is used to provide support for the upper shearing device I1, the lower shearing device I2, the upper shearing device II3, and the lower shearing device II4.
  • the translational drive system 6 is used to drive the intermediate blanks during the connection process.
  • the mounting frame 5 moves along the running direction of the unit, and each mechanism can move along the running direction of the unit along with the mounting frame under the control of the translation drive system 6.
  • a displacement detection device is provided in the translation driving system 6 for real-time control of the moving speed of the mounting frame 5 to match the speed of the unit, so as to facilitate the precise connection of the intermediate blanks.
  • the cutting edge structures of the upper cutting edge I12 and the lower cutting edge I22 are both dovetail cutting grooves
  • the cutting edge structures of the upper cutting edge II and the lower cutting edge II are both dovetail ribs matching the dovetail cutting grooves.
  • shearing blade structure here is not limited to the dovetail form, and other shearing blade structures that can achieve cross-connection in the transverse direction (the width direction of the slab) and anti-dropping structure in the longitudinal direction (the length direction of the slab) are acceptable.
  • the widths of the staggered cutting edge structures on the upper cutting edge I12 and the lower cutting edge II42 are different, and the widths of the staggered cutting edge structures on the lower cutting edge I22 and the upper cutting edge II32 are different, that is, the upper cutting device I1 and There is a certain difference in the width direction of the shearing edge of the lower shearing device II4, the upper shearing device II3 and the lower shearing device I2.
  • the upper tooth grooves of the front slab and the rear slab The tooth grooves will have some overlap, so that the formed dovetail groove will have a certain extrusion deformation during the connection process, which can enhance the connection effect.
  • pressing mechanism, translation mechanism, translation drive system, and lifting mechanism mentioned in this solution are all existing linear telescopic drive mechanisms, such as hydraulic cylinders.
  • a method for connecting intermediate billets of hot-rolled strip steel endless rolling mainly includes the following steps:
  • the shearing device on the outlet side includes an upper shearing device II and a lower shearing device II that are arranged oppositely and vertically. Both the shearing device II and the lower shearing device II can perform lifting motion; the shearing device at the entrance side includes the upper and lower shearing device I and the lower shearing device I, which can be respectively used for lifting and lowering.
  • the installation frame is driven by the translation drive system to move along the unit's operating direction.
  • the upper shearing device II and the lower shearing device II can work together to clamp the tail of the front slab and lift the front slab; in the front shearing device, the upper shearing device I and the lower shearing device I The shearing device I cooperates to clamp the lead of the rear slab; the rear shearing device cooperates with the front shearing device to realize that the tail of the front slab is located above the lead of the rear slab and partially overlaps.
  • the width of the shearing blade structure in the front and rear shearing devices is controlled so that the front and rear slabs are sheared and connected with extrusion deformation.
  • the lower shearing device I can also move back and forth along the operating direction of the unit.
  • connection system and connection method realize the matching of the intermediate billet connection device and the speed of the unit through the translation drive system;
  • the installation frame is adopted as the shearing device (upper shearing device I1, lower shearing device I2, upper shearing device II3, lower shearing device Device II4) provides support.
  • the upper shearing device I1, the lower shearing device I2, the upper shearing device II3, and the lower shearing device II4 are divided into two groups and arranged in the installation frame to realize the clamping of the front slab and the rear slab respectively.

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  • Mechanical Engineering (AREA)
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Abstract

一种热轧带钢无头轧制中间坯连接系统及连接方法，属于带钢无头轧制中间坯连接技术领域。该连接系统及连接方法通过平移驱动系统（6）实现中间坯连接装置与机组速度的匹配；采用安装框架（5）为剪切装置提供支撑，剪切装置分成两组设置在安装框架（5）内，分别实现前板坯和后板坯的夹持；并通过相互交错的燕尾剪刃结构实现剪切并保证纵向良好的受力状态；最后通过在剪刃之间的宽度方向尺寸设置一定的差异，从而保证形成的燕尾切槽连接过程中，存在一定挤压变形，增强连接效果；最终实现良好的中间坯连接效果，同时，极大简化连接装置的结构，降低投资和运营成本。

Description

一种热轧带钢无头轧制中间坯连接系统及连接方法 技术领域
本发明属于带钢无头轧制中间坯连接技术领域，具体涉及一种热轧带钢无头轧制中间坯连接系统及连接方法。
背景技术
传统的板带热连轧精轧机组生产均以单块中间坯进行轧制，进精轧机组时的穿带、加速轧制、减速轧制、抛钢、甩尾等过程不可避免。因此，难以保证带钢头尾厚差和穿带质量均匀性，轧制作业率、成材率也受到一定限制。
随着汽车、家电等行业对薄板质量提出更高要求，尺寸、形状精度、表面和内在质量已成为同等重要的质量关键。热轧带钢无头轧制技术在超薄热带轧制、板厚精度控制、板带整长性能稳定性控制以及提高生产率等方面显示出传统热带轧制无可比拟的优越性。
中间坯连接技术是无头轧制的关键技术，目前包括有：叠轧压接法、剪切压接法、焊接法、机械连接法、还原火焰处理连接法、直接通电连接法、感应加热连接法和激光焊接法等。目前，现有的中间坯连接技术结构非常复杂，占地面积大，投资成本高，且连接工艺非常复杂。
国内外已有采用卡槽连接方法的研究，但在设备工艺流程上，均是采用“分别对前后板坯剪切卡槽，再搭接挤压”来实现；无论从工艺流程上，还是连接设备上均不具备实施的可行性：一方面，为了顺利挤压，前后卡槽的定位精度需要控制在微米量级，而在线连续生产的定位精度无法达到此要求；同时，分别剪切卡槽再搭接挤压，会使剪切面长时间暴露在空气中，从而导致氧化层的产生，也会对连接效果造成影响。
发明内容
有鉴于此，本发明的目的在于提供一种热轧带钢无头轧制中间坯连接系统及连接方法，满足中间坯连接效果，同时简化结构，降低成本。
为达到上述目的，本发明提供如下技术方案：
一种热轧带钢无头轧制中间坯连接系统，包括上剪切装置I、下剪切装置I、上剪切装置II以及下剪切装置II，上剪切装置II与下剪切装置II位于上剪切装置I与下剪切装置I的后方；
上剪切装置I包括上刀座I、设置在上刀座I上的上剪刃I、驱动上刀座I做上下升降 运动的上压下机构I、以及驱动上刀座I做前后平移运动的上平移机构I；下剪切装置I主要由下刀座I以及设置在下刀座I上的下剪刃I组成；
上剪切装置II包括上刀座II、设置在上刀座II上的上剪刃II、以及驱动上刀座II做上下升降运动的上压下机构II；下剪切装置II包括下刀座II、设置在下刀座II上的下剪刃II、以及驱动下刀座II做上下升降运动的提升机构；
上剪刃I设置在下剪刃I的上方且上剪刃I与下剪刃I的剪刃结构相同；上剪刃II正对设置在下剪刃II的上方且上剪刃II与下剪刃II的剪刃结构相同；上剪刃I与下剪刃II的剪刃结构相互交错设置以配合实现对前板坯的剪切，下剪刃I与上剪刃II的剪刃结构相互交错设置以配合实现对后板坯的剪切；上压下机构II上设有控制上剪刃II与下剪刃II剪切量的压下量检测装置。
进一步，还包括安装框架与平移驱动系统，平移驱动系统与安装框架相连并驱动安装框架沿机组运行方向前后移动，平移驱动系统上设有实时控制安装框架移动速度的位移检测装置，以使安装框架与机组速度相匹配；上剪切装置I与下剪切装置I设置在安装框架上且位于入口端，上剪切装置II与下剪切装置II设置在安装框架上且位于出口端。
进一步，上压下机构I安装在上平移机构I上并与上刀座I相连，上平移机构I安装在安装框架上；上压下机构II与提升机构对应与上刀座II、下刀座II相连并安装在安装框架上。
进一步，下剪切装置I中还包括驱动下刀座I做前后平移运动的下平移机构I。
进一步，下平移机构I安装在安装框架上并与下刀座I相连。
进一步，上剪刃I与下剪刃I的剪刃结构为燕尾切槽或燕尾凸筋，上剪刃II与下剪刃II的剪刃结构为与燕尾切槽或燕尾凸筋相匹配的燕尾凸筋或燕尾切槽。
进一步，上剪刃II与下剪刃II上的剪刃结构可从与之相匹配的上剪刃I与下剪刃I上的剪刃结构中穿过，同时，上剪刃I与下剪刃II上交错设置的剪刃结构的宽度不同，下剪刃I与上剪刃II上交错设置的剪刃结构的宽度不同，以使前后板坯在剪切连接时具有挤压变形。
一种热轧带钢无头轧制中间坯连接方法，主要包括以下步骤：
(1)沿机组运行方向，前后设置两组剪切装置：位于后方的剪切装置包括相对且高低设置的上剪切装置II与下剪切装置II，上剪切装置II与下剪切装置II均可做升降运动；位于前方的剪切装置包括高低设置的上剪切装置I、下剪切装置I，上剪切装置I可分别做升降运动以及沿机组运行方向的前后移动；
(2)设置前后两组剪切装置中的剪刃结构，位于后方的剪切装置上的剪刃结构与位于前方的剪切装置上的剪刃结构相互交错设置；后方的剪切装置升降时，其上的剪刃结构可从前 方剪切装置上的剪刃结构中穿过；
(3)后方剪切装置中，上剪切装置II与下剪切装置II配合可夹持住前板坯的带尾并提升前板坯；前方剪切装置中，上剪切装置I与下剪切装置I配合可夹持住后板坯的带头；后方剪切装置与前方剪切装置配合实现前板坯带尾位于后板坯带头上方且部分重叠；
(4)后方剪切装置下降，下剪切装置II与上剪切装置I先配合剪切前板坯，上剪切装置II与下剪切装置I再配合剪切后板坯并同步实现连接。
进一步，控制前、后方剪切装置中剪刃结构的宽度，使前、后板坯剪切连接时具有挤压变形。
进一步，位于前方的剪切装置中，下剪切装置I也可沿机组运行方向做前后移动。
本发明的有益效果在于：
该连接系统及连接方法通过平移驱动系统实现中间坯连接装置与机组速度的匹配；采用安装框架为剪切装置提供支撑，剪切装置分成两组设置在安装框架内，分别实现前板坯和后板坯的夹持；并通过相互交错的燕尾剪刃结构实现剪切并保证纵向良好的受力状态；最后通过在剪刃之间的宽度方向尺寸设置一定的差异，从而保证形成的燕尾切槽连接过程中，存在一定挤压变形，增强连接效果；最终实现良好的中间坯连接效果同时，极大简化连接装置的结构，降低投资和运营成本。
本发明的其他优点、目标和特征在某种程度上将在随后的说明书中进行阐述，并且在某种程度上，基于对下文的考察研究对本领域技术人员而言将是显而易见的，或者可以从本发明的实践中得到教导。本发明的目标和其他优点可以通过下面的说明书来实现和获得。
附图说明
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作优选的详细描述，其中：
图1为热轧带钢无头轧制中间坯连接系统的结构示意图；
图2为上剪刃I与下剪刃I的剪刃结构示意图；
图3为上剪刃II与下剪刃II的剪刃结构示意图；
图4为前板坯与后板坯的连接示意图；
图5为热轧带钢无头轧制中间坯的连接步骤示意图。
附图标记：
上剪切装置I1、下剪切装置I2、上剪切装置II3、下剪切装置II4、安装框架5、平移驱动系统6；
上剪切装置I中：上刀座I11、上剪刃I12、上压下机构I13、上平移机构I14；
下剪切装置I中：下刀座I21、下剪刃I22、下平移机构I23；
上剪切装置II中：上刀座II31、上剪刃II32、上压下机构II33；
下剪切装置II中：下刀座II41、下剪刃II42、提升机构43。
具体实施方式
以下通过特定的具体实例说明本发明的实施方式，本领域技术人员可由本说明书所揭露的内容轻易地了解本发明的其他优点与功效。本发明还可以通过另外不同的具体实施方式加以实施或应用，本说明书中的各项细节也可以基于不同观点与应用，在没有背离本发明的精神下进行各种修饰或改变。需要说明的是，以下实施例中所提供的图示仅以示意方式说明本发明的基本构想，在不冲突的情况下，以下实施例及实施例中的特征可以相互组合。
其中，附图仅用于示例性说明，表示的仅是示意图，而非实物图，不能理解为对本发明的限制；为了更好地说明本发明的实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸；对本领域技术人员来说，附图中某些公知结构及其说明可能省略是可以理解的。
本发明实施例的附图中相同或相似的标号对应相同或相似的部件；在本发明的描述中，需要理解的是，若有术语“上”、“下”、“左”、“右”、“前”、“后”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此附图中描述位置关系的用语仅用于示例性说明，不能理解为对本发明的限制，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。
请参阅图1～图5，为一种热轧带钢无头轧制中间坯连接系统，包括上剪切装置I1、下剪切装置I2、上剪切装置II3以及下剪切装置II4，上剪切装置II3与下剪切装置II4位于上剪切装置I1与下剪切装置I2的后方。
本实施例中，上剪切装置I1包括上刀座I11、设置在上刀座I11上的上剪刃I12、驱动上刀座I11做上下升降运动的上压下机构I13、以及驱动上刀座I做前后平移运动的上平移机构I14。上剪刃I12及上刀座I11可以在上平移机构I14的驱动下，沿机组运行方向前后移动，上剪刃I12及上刀座I11也可以在上压下机构I13的驱动下做升降运动，通过前后及升降运动，可与下剪切装置I配合实现对板坯的夹持。
下剪切装置I2主要由下刀座I21以及设置在下刀座I21上的下剪刃I22组成；当此下剪切装置I2靠近下剪切装置II4布置时，其可固定设置，通过上剪切装置I1的运动实现相 互配合；当其与下剪切装置II4间隔一段距离布置时，下剪切装置I中还包括驱动下刀座I21做前后平移运动的下平移机构I23，这样，上剪切装置I1与下剪切装置I2可对应通过上平移机构I14、下平移机构I23实现上刀座I11、下刀座I21的前后移动，以使其与后方的剪切装置相配合。
对应的，上剪切装置II3包括上刀座II31、设置在上刀座II31上的上剪刃II32、以及驱动上刀座II做上下升降运动的上压下机构II33；下剪切装置II4包括下刀座II41、设置在下刀座II41上的下剪刃II42、以及驱动下刀座II做上下升降运动的提升机构43。上刀座II在上压下机构II33的驱动下做升降运动，下刀座II41在提升机构43的驱动下做升降运动，两者相互配合可实现对板坯的夹持。
此处，上剪切装置II3与下剪切装置II4是设置在上剪切装置I1与下剪切装置I2的后方，而上剪切装置I1与下剪切装置I2又对应通过上平移机构I14、下平移机构I23实现上刀座I11、下刀座I21的前后移动，这样，在升降、移动的调节下，即可实现板坯的夹持、叠加以及刀座上剪刃的相互配合，进而可实现板坯的剪切连接。
具体的，上剪刃I12设置在下剪刃I22的上方且上剪刃I12与下剪刃I22的剪刃结构相同；上剪刃II32正对设置在下剪刃II42的上方且上剪刃II32与下剪刃II42的剪刃结构相同；上剪刃I与下剪刃II、下剪刃I与上剪刃II的剪刃结构相互交错设置。剪切过程由前后设置的两组剪切装置配合实现，而在剪切的同时，又同步实现了连接。
作为上述方案的进一步改进，还包括安装框架5与平移驱动系统6，平移驱动系统6与安装框架5相连并驱动安装框架沿机组运行方向前后移动，上剪切装置I1与下剪切装置I2设置在安装框架上且位于入口端，上剪切装置II3与下剪切装置II4设置在安装框架5内且位于出口端。
具体的，上剪切装置I1中，上压下机构I13安装在上平移机构I14上并与上刀座I11相连，上平移机构I14安装在安装框架的入口侧上方，上刀座I11可以在上压下机构I13与上平移机构I14的驱动下，对应在安装框架内上下、前后移动。下剪切装置I2中，下刀座I21安装在下平移机构I23上由其驱动，而下平移机构I23安装在安装框架的入口侧下方。上剪切装置II3中，上压下机构II33对应与上刀座II31相连并安装在安装框架的出口侧上方，上刀座II31在上压下机构II33的驱动下在安装框架内上下移动。下剪切装置II4中，下刀座II41通过提升机构43安装在安装框架的出口侧下方，下刀座II41及其上的剪刃可以在提升机构43的驱动下，在安装框架内上下移动。
优选的，上压下机构II33上设有压下量检测装置，用于精确控制剪刃的剪切量，以适应 不同板坯厚度的要求。
上述的安装框架5用于为上剪切装置I1、下剪切装置I2、上剪切装置II3以及下剪切装置II4提供支撑，平移驱动系统6用于在进行中间坯连接的过程中，驱动安装框架5沿着机组运行方向移动，各机构可以在平移驱动系统6控制下随安装框架一起沿机组运行方向移动。平移驱动系统6中设有位移检测装置，用于实时控制安装框架5的移动速度使其与机组速度相匹配，便于实现中间坯的精确连接。
本实施例中，上剪刃I12与下剪刃I22的剪刃结构均为燕尾切槽，上剪刃II与下剪刃II的剪刃结构均为与燕尾切槽相匹配的燕尾凸筋。剪切过程中，上剪切装置I1先和下剪切装置II4配合剪切出前板坯，后上剪切装置II3和下剪切装置I2配合剪切出后板坯并同步实现连接，即二者相互交错实现匹配连接。当然，此处的剪刃结构不限于燕尾形式，其他能实现横向(板坯宽度方向)交错连接、纵向(板坯长度方向)防脱的剪刃结构形式均可。
优选的，上剪刃I12与下剪刃II42上交错设置的剪刃结构的宽度不同，下剪刃I22与上剪刃II32上交错设置的剪刃结构的宽度不同，即上剪切装置I1和下剪切装置II4的剪刃、上剪切装置II3和下剪切装置I2的剪刃之间在宽度方向上的尺寸存在一定的差异，这样，前板坯上齿槽与后板坯上的齿槽会有一些重合，使得形成的燕尾切槽在连接过程中会存在一定的挤压变形，可增强连接效果。
需要说明的是，本方案中提及的压下机构、平移机构、平移驱动系统、提升机构均为现有的线性伸缩驱动机构，如液压缸类。
一种热轧带钢无头轧制中间坯连接方法，主要包括以下步骤：
(1)在同一个安装框架内前后(入口侧与出口侧)设置两组剪切装置：位于出口侧的剪切装置包括相对且高低设置的上剪切装置II与下剪切装置II，上剪切装置II与下剪切装置II均可做升降运动；位于入口侧的剪切装置包括高低设置的上剪切装置I、下剪切装置I，上剪切装置I可分别做升降运动以及沿机组运行方向的前后移动；安装框架由平移驱动系统驱动其沿机组运行方向移动。
(2)设置前后两组剪切装置中的剪刃结构，位于后方的上剪切装置II、下剪切装置II上的剪刃结构相同，位于前方的上剪切装置I、下剪切装置I上的剪刃结构相同，前方与后方的剪刃结构相互交错设置；后方的剪切装置升降时，其上的剪刃结构可从前方剪切装置上的剪刃结构中穿过。
(3)后方剪切装置中，上剪切装置II与下剪切装置II配合可夹持住前板坯的带尾并提升前板坯；前方剪切装置中，上剪切装置I与下剪切装置I配合可夹持住后板坯的带头；后方 剪切装置与前方剪切装置配合实现前板坯带尾位于后板坯带头上方且部分重叠。
(4)后方剪切装置下降，下剪切装置II与上剪切装置I先配合剪切前板坯，上剪切装置II与下剪切装置I再配合剪切后板坯并同步实现连接。
优选的，控制前、后方剪切装置中剪刃结构的宽度，使前、后板坯剪切连接时具有挤压变形。
优选的，位于前方的剪切装置中，下剪切装置I也可沿机组运行方向做前后移动。
具体可分成以下阶段：
(1)上剪切装置I与下剪切装置I、上剪切装置II与下剪切装置II均处于打开状态，中间坯从连接系统中间通过。
(2)驱动上剪切装置II与下剪切装置II使其配合压紧前板坯带尾，并分别在上压下机构II33和提升机构43作用下，在压紧状态下将前板坯抬升一定高度；同时，平移驱动系统6控制安装框架移动，移动速度与机组速度匹配。
(3)驱动上剪切装置I与下剪切装置I使其配合压紧后板坯带头。
(4)分别在上平移机构I14、下平移机构I23的驱动下，连同后板坯一起同步移动上剪切装置I与下剪切装置I，使压紧在上剪切装置I与下剪切装置I间的后板坯带头处于前板坯带尾下方对应位置。
(5)驱动压紧有前板坯带尾的上剪切装置II与下剪切装置II同步向下运动：下剪切装置II中的下剪刃II与上剪切装置I中的上剪刃I先对应配合，完成前板坯带尾剪切，上剪切装置II中的上剪刃II与下剪切装置I中下剪刃I随后对应配合，剪切后板坯带头；剪切后板坯带头时，已剪切好的前板坯带尾同步与剪切完的前板坯带尾相连接。
(6)驱动上剪切装置I、下剪切装置I、上剪切装置II以及下剪切装置II解脱对前、后板坯的压紧状态，各机构复位到(1)阶段状态等待下次剪切。
该连接系统及连接方法通过平移驱动系统实现中间坯连接装置与机组速度的匹配；采用安装框架为剪切装置(上剪切装置I1、下剪切装置I2、上剪切装置II3、下剪切装置II4)提供支撑，上剪切装置I1、下剪切装置I2、上剪切装置II3、下剪切装置II4分成两组设置在安装框架内，分别实现前板坯和后板坯的夹持；并通过相互交错的燕尾剪刃结构实现剪切并保证纵向良好的受力状态；最后通过在剪刃之间的宽度方向尺寸设置一定的差异，从而保证形成的燕尾切槽连接过程中，存在一定挤压变形，增强连接效果；最终实现良好的中间坯连接效果同时，极大简化连接装置的结构，降低投资和运营成本。
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施 例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。

Claims (10)

  1. 一种热轧带钢无头轧制中间坯连接系统，其特征在于：包括上剪切装置I、下剪切装置I、上剪切装置II以及下剪切装置II，上剪切装置II与下剪切装置II位于上剪切装置I与下剪切装置I的后方；
    上剪切装置I包括上刀座I、设置在上刀座I上的上剪刃I、驱动上刀座I做上下升降运动的上压下机构I、以及驱动上刀座I做前后平移运动的上平移机构I；下剪切装置I主要由下刀座I以及设置在下刀座I上的下剪刃I组成；
    上剪切装置II包括上刀座II、设置在上刀座II上的上剪刃II、以及驱动上刀座II做上下升降运动的上压下机构II；下剪切装置II包括下刀座II、设置在下刀座II上的下剪刃II、以及驱动下刀座II做上下升降运动的提升机构；
    上剪刃I设置在下剪刃I的上方且上剪刃I与下剪刃I的剪刃结构相同；上剪刃II正对设置在下剪刃II的上方且上剪刃II与下剪刃II的剪刃结构相同；上剪刃I与下剪刃II的剪刃结构相互交错设置以配合实现对前板坯的剪切，下剪刃I与上剪刃II的剪刃结构相互交错设置以配合实现对后板坯的剪切；上压下机构II上设有控制上剪刃II与下剪刃II剪切量的压下量检测装置。
  2. 根据权利要求1所述的热轧带钢无头轧制中间坯连接系统，其特征在于：还包括安装框架与平移驱动系统，平移驱动系统与安装框架相连并驱动安装框架沿机组运行方向前后移动，平移驱动系统上设有实时控制安装框架移动速度的位移检测装置，以使安装框架与机组速度相匹配；上剪切装置I与下剪切装置I设置在安装框架上且位于入口端，上剪切装置II与下剪切装置II设置在安装框架上且位于出口端。
  3. 根据权利要求2所述的热轧带钢无头轧制中间坯连接系统，其特征在于：上压下机构I安装在上平移机构I上并与上刀座I相连，上平移机构I安装在安装框架上；上压下机构II与提升机构对应与上刀座II、下刀座II相连并安装在安装框架上。
  4. 根据权利要求2-3任一所述的热轧带钢无头轧制中间坯连接系统，其特征在于：下剪切装置I中还包括驱动下刀座I做前后平移运动的下平移机构I。
  5. 根据权利要求4所述的热轧带钢无头轧制中间坯连接系统，其特征在于：下平移机构I安装在安装框架上并与下刀座I相连。
  6. 根据权利要求1所述的热轧带钢无头轧制中间坯连接系统，其特征在于：上剪刃I与下剪刃I的剪刃结构为燕尾切槽或燕尾凸筋，上剪刃II与下剪刃II的剪刃结构为与燕尾切槽或燕尾凸筋相匹配的燕尾凸筋或燕尾切槽。
  7. 根据权利要求1或6所述的热轧带钢无头轧制中间坯连接系统，其特征在于：上剪刃 II与下剪刃II上的剪刃结构可从与之相匹配的上剪刃I与下剪刃I上的剪刃结构中穿过，同时，上剪刃I与下剪刃II上交错设置的剪刃结构的宽度不同，下剪刃I与上剪刃II上交错设置的剪刃结构的宽度不同，以使前后板坯在剪切连接时具有挤压变形。
  8. 一种热轧带钢无头轧制中间坯连接方法，其特征在于主要包括以下步骤：
    (1)沿机组运行方向，前后设置两组剪切装置：位于后方的剪切装置包括相对且高低设置的上剪切装置II与下剪切装置II，上剪切装置II与下剪切装置II均可做升降运动；位于前方的剪切装置包括高低设置的上剪切装置I、下剪切装置I，上剪切装置I可分别做升降运动以及沿机组运行方向的前后移动；
    (2)设置前后两组剪切装置中的剪刃结构，位于后方的剪切装置上的剪刃结构与位于前方的剪切装置上的剪刃结构相互交错设置；后方的剪切装置升降时，其上的剪刃结构可从前方剪切装置上的剪刃结构中穿过；
    (3)后方剪切装置中，上剪切装置II与下剪切装置II配合可夹持住前板坯的带尾并提升前板坯；前方剪切装置中，上剪切装置I与下剪切装置I配合可夹持住后板坯的带头；后方剪切装置与前方剪切装置配合实现前板坯带尾位于后板坯带头上方且部分重叠；
    (4)后方剪切装置下降，下剪切装置II与上剪切装置I先配合剪切前板坯，上剪切装置II与下剪切装置I再配合剪切后板坯并同步实现连接。
  9. 根据权利要求8所述的热轧带钢无头轧制中间坯连接方法，其特征在于：控制前、后方剪切装置中剪刃结构的宽度，使前、后板坯剪切连接时具有挤压变形。
  10. 根据权利要求8所述的热轧带钢无头轧制中间坯连接方法，其特征在于：位于前方的剪切装置中，下剪切装置I也可沿机组运行方向做前后移动。
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