CN106694719B - One kind behind Coiling Welded Pipe edge curved tooling and after bending method - Google Patents
One kind behind Coiling Welded Pipe edge curved tooling and after bending method Download PDFInfo
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- CN106694719B CN106694719B CN201611257232.0A CN201611257232A CN106694719B CN 106694719 B CN106694719 B CN 106694719B CN 201611257232 A CN201611257232 A CN 201611257232A CN 106694719 B CN106694719 B CN 106694719B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005452 bending Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 239000012528 membrane Substances 0.000 claims description 76
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005191 phase separation Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 2
- 244000144730 Amygdalus persica Species 0.000 description 2
- 235000006040 Prunus persica var persica Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
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Abstract
Description
技术领域technical field
本发明属于金属板加工装置技术领域，具体涉及为一种待焊钢管边缘后弯工装以及后弯方法。The invention belongs to the technical field of metal plate processing devices, and in particular relates to a backbending tool and a backbending method for the edge of a steel pipe to be welded.
背景技术Background technique
单支钢管的生产，一般采用卷管机来实现，但卷管机生产有一定的局限性，如壁厚、长度，对于厚壁且要求长度，例如长度为12米，则通常采用“JC”成形法。The production of a single steel pipe is generally realized by a coiling machine, but the production of the coiling machine has certain limitations, such as wall thickness and length. For thick walls and required lengths, such as a length of 12 meters, "JC" is usually used. Shaping method.
“JC”成形法在钢板的折弯过程中，其边缘有一段1.5—3倍壁厚的区域在理论上是无法变形的,称为“直边段”，如果保留此区域，加工后的钢管形成所谓的“桃子尖”。In the "JC" forming method, during the bending process of the steel plate, there is a section of 1.5-3 times the wall thickness on the edge that cannot be deformed in theory, which is called the "straight edge section". If this area is kept, the steel pipe after processing The so-called "peach tip" is formed.
为消除此现象，有一种方法是将钢板成型后进行割边处理，并用手工方法将边缘修磨，然后进行焊接等后续工序。这种方法不仅浪费了原材料，而且费时费力，有些特殊钢种也不允许这种加工方法。In order to eliminate this phenomenon, there is a method to cut the edge after forming the steel plate, and manually grind the edge, and then perform subsequent processes such as welding. This method not only wastes raw materials, but also takes time and effort, and some special steel types do not allow this processing method.
发明内容Contents of the invention
本发明的目的在于克服上述提到的缺陷和不足，而提供一种待焊钢管边缘后弯工装。The object of the present invention is to overcome the above-mentioned defects and deficiencies, and provide a steel pipe edge back bending tool to be welded.
本发明的另一目的在于提供一种待焊钢管边缘后弯方法。Another object of the present invention is to provide a method for back-bending the edge of a steel pipe to be welded.
本发明实现其目的采用的技术方案如下。The technical scheme that the present invention realizes its object adopts is as follows.
一种待焊钢管边缘后弯工装，包括上滑块、连杆固定块、连杆、上外模、连杆连接板、连杆套环、内膜连杆、内膜、下外模；所述内膜设置于上外模和下外模之间；所述内膜的上表面外凸形成弧状的内膜上面，所述内膜的下表面外凸形成弧状的内膜下面；所述内膜固定于内膜连杆；所述内膜连杆水平设置，两端穿设于连杆套环；所述连杆连接板底端通过连杆套环连接内膜连杆，顶端固定安装于连杆底部；所述连杆上端通过通过连杆固定块连接上滑块；所述上外模固定于上滑块底部中央，上外模的底面内凹形成弧状的上外模面；所述下外模位于内膜正下方，且下外模上表面内凹形成弧状的下外模面。A tool for backbending the edge of a steel pipe to be welded, comprising an upper slider, a connecting rod fixing block, a connecting rod, an upper outer mold, a connecting rod connecting plate, a connecting rod collar, an inner membrane connecting rod, an inner membrane, and a lower outer mold; The inner membrane is arranged between the upper outer mold and the lower outer mold; the upper surface of the inner membrane protrudes outward to form an arc-shaped inner membrane, and the lower surface of the inner membrane protrudes outward to form an arc-shaped inner membrane below; The membrane is fixed on the intima link; the intima link is set horizontally, and both ends are pierced through the link collar; the bottom end of the link connecting plate is connected to the intima link through the link collar, and the top end is fixed on the The bottom of the connecting rod; the upper end of the connecting rod is connected to the upper slider through the connecting rod fixing block; the upper outer mold is fixed in the center of the bottom of the upper slider, and the bottom surface of the upper outer mold is concave to form an arc-shaped upper outer mold surface; The lower outer mold is located directly below the inner membrane, and the upper surface of the lower outer mold is concave to form an arc-shaped lower outer mold surface.
所述上外模面的直径略大于内膜上面的直径；所述内膜下面的直径等于内膜上面的直径；所述下外模面的直径略大于内膜下面的直径。The diameter of the upper outer mold surface is slightly larger than the diameter above the inner membrane; the diameter below the inner membrane is equal to the diameter above the inner membrane; the diameter of the lower outer mold surface is slightly larger than the diameter below the inner membrane.
所述上滑块两侧均穿设有竖立设置的升降支柱；所述升降支柱顶端固定连接顶座；所述顶座固定有油压缸；所述油压缸的输出端连接上滑块；所述升降支柱底端连接底座；所述底座的上表面中央固定下外模。Both sides of the upper slider are pierced with vertical lifting pillars; the top of the lifting pillar is fixedly connected to the top seat; the top seat is fixed with a hydraulic cylinder; the output end of the hydraulic cylinder is connected to the upper slider; The bottom end of the lifting pillar is connected to the base; the lower outer mold is fixed in the center of the upper surface of the base.
所述连杆为圆杆；所述连杆固定块焊接固定于上滑块前后两端面的中部；所述连杆竖立设置，上端穿过连杆固定块后螺纹连接有螺母；所述连杆与连杆固定块滑动连接。The connecting rod is a round rod; the connecting rod fixing block is welded and fixed in the middle of the front and rear ends of the upper slider; Slidingly connected with the connecting rod fixing block.
所述连杆连接板为平面板，上端与连杆焊接，下端与连杆套环焊接；所述连杆连接板和内膜的轴心位于同一平面。The connecting rod connecting plate is a plane plate, the upper end is welded with the connecting rod, and the lower end is welded with the connecting rod collar; the axis center of the connecting rod connecting plate and the inner membrane are located on the same plane.
所述连杆套环呈中空的圆柱状；所述内膜连杆两端穿设于连杆套环；所述连杆套环螺纹连接有杆套紧定螺栓；所述杆套紧定螺栓端部顶触内膜连杆。The connecting rod collar is hollow cylindrical; both ends of the inner membrane connecting rod are pierced through the connecting rod collar; the connecting rod collar is threadedly connected with a rod sleeve tightening bolt; the rod sleeve tightening bolt The apex touches the intima rod.
所述内膜绕内膜的轴心中心对称；所述内膜的左右两侧均为平面。The intima is symmetrical around the axis of the intima; the left and right sides of the intima are planes.
所述上外模面的表面覆盖有一层弹性层；所述内膜上面的表面和内膜下面的表面均覆盖有一层弹性层；所述下外模面的表面均覆盖有一层弹性层。The surface of the upper outer mold surface is covered with an elastic layer; the surface above the inner membrane and the surface below the inner membrane are both covered with an elastic layer; the surface of the lower outer mold surface is covered with an elastic layer.
一种待焊钢管边缘后弯工装的后弯方法，包括以下步骤：A backbending method of a steel pipe edge to be welded backbending tooling, comprising the following steps:
步骤一，将已经经过弯曲并呈圆环状的管坯套设于内膜外部，并将管坯的开口处朝上设置，管坯的边缘直边段位于上外模面和内膜上面之间；Step 1: Set the bent and ring-shaped tube blank on the outside of the inner membrane, and set the opening of the tube blank upwards, and the straight edge of the tube blank is located between the upper outer mold surface and the upper surface of the inner membrane between;
步骤二，油压缸动作，推动上滑块沿着升降支柱下行，上外模和内膜均同步下行，管坯底端触接下外模后内膜停止下行，所述连杆和连杆固定块相对滑动，连杆上的螺母与连杆固定块相脱离；上滑块继续下行，上外模和内膜产生相对移动，直到上外模将管坯的边缘直边段夹设于上外模面和内膜上面之间并保持一段时间；Step 2: The hydraulic cylinder acts to push the upper slider down along the lifting pillar, the upper outer mold and the inner membrane both descend synchronously, and the inner membrane stops descending after the bottom of the tube blank touches the lower outer mold, and the connecting rod and the connecting rod The fixed block slides relatively, and the nut on the connecting rod is separated from the connecting rod fixed block; the upper slider continues to move downward, and the upper outer mold and the inner film move relatively until the upper outer mold clamps the straight edge section of the tube blank on the upper Between the outer mold surface and the upper surface of the inner membrane and keep it for a period of time;
步骤三，油压缸动作，推动上滑块沿着升降支柱上行，上外模上行并与内膜脱离，接着，所述连杆和连杆固定块相对滑动，直到连杆上的螺母与连杆固定块相顶触后，上滑块通过连杆拉动内膜同步上行；内膜和下外模脱离，完成管坯的边缘直边段的压制。Step 3: The hydraulic cylinder moves to push the upper slider upward along the lifting pillar, the upper outer mold moves upward and separates from the inner membrane, and then the connecting rod and the connecting rod fixing block slide relative to each other until the nut on the connecting rod is in contact with the connecting rod. After the rod fixing blocks touch each other, the upper slider pulls the inner film through the connecting rod to move upward synchronously; the inner film and the lower outer mold are separated to complete the pressing of the straight edge section of the tube blank.
本工装以较经济的方式解决“桃子尖”问题，淘汰传统的割边处理工艺，采用一般制管企业现有的钢管整圆设备，例如：四柱液压机，通过对“直边段”的压制使其产生变形，达到钢管圆度要求。This tooling solves the problem of "peach tip" in a more economical way, eliminates the traditional edge cutting process, and adopts the existing steel pipe rounding equipment of general pipe manufacturers, such as: four-column hydraulic press, through the suppression of "straight edge section". It deforms to meet the roundness requirements of steel pipes.
附图说明Description of drawings
图1是本工装的主视图；Fig. 1 is the front view of this frock;
图2是本工装的侧视图；Fig. 2 is the side view of this frock;
图中：上滑块1、连杆固定块2、连杆3、上外模4、连杆连接板5、连杆套环6、内膜连杆7、内膜8、下外模9、升降支柱10、顶座11、油压缸12、底座13、杆套紧定螺栓14、管坯15。In the figure: upper slider 1, connecting rod fixing block 2, connecting rod 3, upper outer mold 4, connecting rod connecting plate 5, connecting rod collar 6, inner membrane connecting rod 7, inner membrane 8, lower outer mold 9, Lifting pillar 10, top seat 11, hydraulic cylinder 12, base 13, rod sleeve fastening bolt 14, tube blank 15.
具体实施方式Detailed ways
下面结合附图，对本发明作进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings.
一种待焊钢管边缘后弯工装，包括上滑块1、连杆固定块2、连杆3、上外模4、连杆连接板5、连杆套环6、内膜连杆7、内膜8、下外模9；所述内膜8设置于上外模4和下外模9之间；所述内膜8的上表面外凸形成弧状的内膜上面，所述内膜8的下表面外凸形成弧状的内膜下面；所述内膜8固定于内膜连杆7；所述内膜连杆7水平设置，两端穿设于连杆套环6；所述连杆连接板5底端通过连杆套环6连接内膜连杆7，顶端固定安装于连杆3底部；所述连杆3上端通过通过连杆固定块2连接上滑块1；所述上外模4固定于上滑块1底部中央，上外模4的底面内凹形成弧状的上外模面；所述下外模9位于内膜8正下方，且下外模9上表面内凹形成弧状的下外模面。A tool for backbending the edge of a steel pipe to be welded, comprising an upper slider 1, a connecting rod fixing block 2, a connecting rod 3, an upper outer mold 4, a connecting rod connecting plate 5, a connecting rod collar 6, an inner film connecting rod 7, an inner Film 8, lower outer mold 9; the inner membrane 8 is arranged between the upper outer mold 4 and the lower outer mold 9; the upper surface of the inner membrane 8 protrudes outward to form an arc-shaped inner membrane, and the inner membrane 8 The lower surface protrudes outwards to form an arc-shaped underside of the inner membrane; the inner membrane 8 is fixed to the inner membrane connecting rod 7; the inner membrane connecting rod 7 is arranged horizontally, and both ends are pierced through the connecting rod collar 6; the connecting rod is connected The bottom end of the plate 5 is connected to the inner film connecting rod 7 through the connecting rod collar 6, and the top end is fixedly installed on the bottom of the connecting rod 3; the upper end of the connecting rod 3 is connected to the upper slider 1 through the connecting rod fixing block 2; the upper outer mold 4 is fixed on the center of the bottom of the upper slider 1, and the bottom surface of the upper outer mold 4 is concaved to form an arc-shaped upper outer mold surface; the lower outer mold 9 is located directly below the inner membrane 8, and the upper surface of the lower outer mold 9 is concaved to form an arc-shaped surface The lower outer mold surface.
所述上外模面的直径R1略大于内膜上面的直径R2；所述内膜下面的直径R3等于内膜上面的直径R2；所述下外模面的直径R4略大于内膜下面的直径R3。作为优选，R1/R2的比值为105%~110%，R4/R3的比值为105%~110%。上外模面的直径R1略大于内膜上面的直径R2，以克服材料的反弹。The diameter R1 of the upper outer mold surface is slightly larger than the diameter R2 above the inner membrane; the diameter R3 below the inner membrane is equal to the diameter R2 above the inner membrane; the diameter R4 of the lower outer mold surface is slightly larger than the diameter below the inner membrane R3. Preferably, the ratio of R1/R2 is 105%~110%, and the ratio of R4/R3 is 105%~110%. The diameter R1 of the upper outer mold surface is slightly larger than the diameter R2 above the inner membrane to overcome the rebound of the material.
所述上滑块1两侧均穿设有竖立设置的升降支柱10；所述升降支柱10顶端固定连接顶座11；所述顶座11固定有油压缸12；所述油压缸12的输出端连接上滑块1；所述升降支柱10底端连接底座13；所述底座13的上表面中央固定下外模9。本工装，采用一般制管企业现有的钢管整圆设备。本工装可以容易地安装到现有的设备上，并完成工艺所要求的内容。Both sides of the upper slider 1 are pierced with vertical lifting pillars 10; the top of the lifting pillar 10 is fixedly connected to the top seat 11; the top seat 11 is fixed with a hydraulic cylinder 12; The output end is connected to the upper slide block 1; the bottom end of the lift column 10 is connected to the base 13; the lower outer mold 9 is fixed in the center of the upper surface of the base 13. This tooling adopts the existing steel pipe rounding equipment of general pipe making enterprises. The tooling can be easily installed on the existing equipment and complete the content required by the process.
所述连杆3为圆杆；所述连杆固定块2焊接固定于上滑块1前后两端面的中部；所述连杆3竖立设置，上端穿过连杆固定块2后螺纹连接有螺母；所述连杆3与连杆固定块2滑动连接。The connecting rod 3 is a round rod; the connecting rod fixing block 2 is welded and fixed on the middle part of the front and rear ends of the upper slider 1; ; The connecting rod 3 is slidingly connected with the connecting rod fixing block 2 .
所述连杆连接板5为平面板，上端与连杆3焊接，下端与连杆套环6焊接；所述连杆连接板5和内膜8的轴心位于同一平面。连杆连接为平面板，以增大与连杆套环的焊接面积，并且提供足够的抗弯强度，防止内膜转动从而使得连杆连接弯曲。The connecting rod connecting plate 5 is a plane plate, the upper end is welded with the connecting rod 3, and the lower end is welded with the connecting rod collar 6; the axes of the connecting rod connecting plate 5 and the inner membrane 8 are located on the same plane. The connecting rod connection is a flat plate to increase the welding area with the connecting rod collar and provide sufficient bending strength to prevent the inner membrane from rotating and bending the connecting rod connection.
如权利要求1所述的一种待焊钢管边缘后弯工装，其特征在于，所述连杆套环6呈中空的圆柱状；所述内膜连杆7两端穿设于连杆套环6；所述连杆套环6螺纹连接有杆套紧定螺栓14；所述杆套紧定螺栓14端部穿过连杆套环6外壁后顶触内膜连杆7。A backbending tool for the edge of a steel pipe to be welded as claimed in claim 1, wherein the connecting rod collar 6 is a hollow cylinder; the two ends of the inner membrane connecting rod 7 are pierced through the connecting rod collar 6. The connecting rod collar 6 is threadedly connected with a rod sleeve tightening bolt 14 ; the end of the rod sleeve fixing bolt 14 passes through the outer wall of the connecting rod collar 6 and then touches the inner membrane connecting rod 7 .
所述内膜8绕内膜8的轴心中心对称；所述内膜8的左右两侧均为平面。内膜8两侧用以容纳管坯15。The intima 8 is symmetrical around the axis of the intima 8; the left and right sides of the intima 8 are planes. Both sides of the inner membrane 8 are used to accommodate the tube blank 15 .
所述上外模面的表面覆盖有一层弹性层；所述内膜上面的表面和内膜下面的表面均覆盖有一层弹性层；所述下外模面的表面均覆盖有一层弹性层。作为优选，所述弹性层具有一定弹性的软材料，优选采用常规的皮带输送橡胶带，防止钢管表面压制时产生损伤。The surface of the upper outer mold surface is covered with an elastic layer; the surface above the inner membrane and the surface below the inner membrane are both covered with an elastic layer; the surface of the lower outer mold surface is covered with an elastic layer. As a preference, the elastic layer is made of a soft material with certain elasticity, and a conventional belt conveyor rubber belt is preferably used to prevent damage to the surface of the steel pipe during pressing.
一种待焊钢管边缘后弯工装的后弯方法，其特征在于，包括以下步骤：A backbending method of a steel pipe edge to be welded backbending tooling, characterized in that it comprises the following steps:
步骤一，将已经经过弯曲并呈圆环状的管坯15套设于内膜8外部，并将管坯15的开口处朝上设置，管坯15的边缘直边段位于上外模面和内膜上面之间；Step 1, the tube blank 15 that has been bent and in the shape of a ring is sleeved outside the inner membrane 8, and the opening of the tube blank 15 is set upward, and the straight edge section of the tube blank 15 is located between the upper outer mold surface and the Between the top of the intima;
步骤二，油压缸12动作，推动上滑块1沿着升降支柱10下行，上外模4和内膜8均同步下行，管坯15底端触接下外模9后内膜8停止下行，所述连杆3和连杆固定块2相对滑动，连杆3上的螺母与连杆固定块2相脱离；上滑块1继续下行，上外模4和内膜8产生相对移动，直到上外模4将管坯15的边缘直边段夹设于上外模面和内膜上面之间并保持一段时间；Step 2: The hydraulic cylinder 12 moves to push the upper slider 1 to go down along the lifting pillar 10, the upper outer mold 4 and the inner membrane 8 both go down synchronously, and the inner membrane 8 stops descending after the bottom of the tube blank 15 touches the lower outer mold 9 , the connecting rod 3 and the connecting rod fixing block 2 slide relatively, and the nut on the connecting rod 3 is separated from the connecting rod fixing block 2; the upper slider 1 continues to descend, and the upper outer mold 4 and the inner membrane 8 move relatively until The upper outer mold 4 clamps the edge straight section of the tube blank 15 between the upper outer mold surface and the upper surface of the inner film and keeps it for a period of time;
步骤三，油压缸12动作，推动上滑块1沿着升降支柱10上行，上外模4上行并与内膜8脱离，接着，所述连杆3和连杆固定块2相对滑动，直到连杆3上的螺母与连杆固定块2相顶触后，上滑块1通过连杆3拉动内膜8同步上行；内膜8和下外模9脱离，完成管坯15的边缘直边段的压制。Step 3, the hydraulic cylinder 12 moves to push the upper slider 1 upward along the lifting pillar 10, the upper outer mold 4 ascends and separates from the inner membrane 8, and then the connecting rod 3 and the connecting rod fixing block 2 slide relatively until After the nut on the connecting rod 3 touches the connecting rod fixing block 2, the upper slider 1 pulls the inner film 8 through the connecting rod 3 to move upward synchronously; Segment suppression.
本发明按照实施例进行了说明，在不脱离本原理的前提下，本装置还可以作出若干变形和改进。应当指出，凡采用等同替换或等效变换等方式所获得的技术方案，均落在本发明的保护范围内。The present invention has been described according to the embodiments. On the premise of not departing from the principle, the device can also be modified and improved. It should be pointed out that all technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
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