|Publication number||CN102744299 A|
|Application number||CN 201210201250|
|Publication date||24 Oct 2012|
|Filing date||18 Jun 2012|
|Priority date||18 Jun 2012|
|Publication number||201210201250.2, CN 102744299 A, CN 102744299A, CN 201210201250, CN-A-102744299, CN102744299 A, CN102744299A, CN201210201250, CN201210201250.2|
|Inventors||傅建中, 傅李达, 朱伟杰, 贺永|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Classifications (1), Legal Events (3)|
|External Links: SIPO, Espacenet|
一种基于伸缩折弯棒的板材折弯机构 A telescopic rod bent sheet metal bending mechanism based
 本发明涉及板材折弯加工设备领域，尤其是涉及用于弯字机中的基于伸缩折弯棒的板材折弯机构。  The present invention relates to the field of sheet metal bending processing equipment, in particular bending machine word based telescopic rod bent sheet folding means relates to.
 在广告标识行业中，立体字使用非常广泛，金属立体字的围边通常使用弯字机将其板材折弯成字的轮廓形状。  In advertising logos industry is widely used three-dimensional characters, three-dimensional character of the metal around the edges typically use the word machine to bend sheet metal bent into the shape of the outline of the word. 由于字的轮廓复杂，对弯字机的折弯机构有很高的设计要求。 Because of the complexity of outline fonts, means for bending the bending machine word has a high design requirements.
目前常用的折弯方式有两种，第一种是圆弧形折弯件旋转的折弯方式，该板材折弯机构包括支架、与支架轴接的下旋转台和上旋转台、两块圆弧形折弯件、折弯挡板以及安装在支架上带动下旋转台和上旋转台转动的电机。  The most commonly used bent in two ways, first is the arc-shaped bent parts rotating bending mode, the sheet folding mechanism includes a rotary table stand, with the support shaft connected to the rotary table and the next, two arc-shaped bent parts, and driven bending baffle mounted on the carriage under the rotary table and the rotary table rotating motor. 下旋转台和上旋转台通过两块圆弧形折弯件固定连接，两块圆弧形折弯件均设置在下旋转台和上旋转台的外缘，折弯挡板位于下旋转台和上旋转台之间，折弯挡板由两块直板组成，两块直板间为板材通过的空间，折弯挡板的板材出口两侧刚好为两块圆弧形折弯件。 Under the rotary table and the rotary table fixing member connected by two arc-shaped bend, two arc-shaped bent parts are set to the lower outer edge of the rotary table and the rotary table, the rotary table and the upper bending baffle located under the between the rotary table, bending baffle composed by two straight, straight to the space between the two plates through both sides of the baffle plate bending exports just as the two arc-shaped bent parts. 电机通过减速机与下旋转台齿轮配合，电机通过减速机带动下旋转台、上旋转台和两块圆弧形折弯件一起转动，折弯挡板则静止不动，从折弯挡板中间出来的板材，板材受到圆弧形折弯件一个沿圆周切线方向的扭力，通过圆弧形折弯件旋转的方式实现板材的折弯。 Motor through reducer and gear with rotating units, motor through reducer drive rotary table below, the rotary table and two arc-shaped bent parts rotate together, bending the stationary bezel, middle from bending baffle out of the plate, the plate by an arc-shaped bent parts along the circumferential direction tangential torque to achieve through the arc-shaped plate bending bent parts rotated. 这种板材折弯机构目前比较常见，如申请号为200910014823. 9,201010180069. 9,201010564423. 8的中国发明专利申请中，折弯机构均采用圆弧形折弯件旋转的折弯方式。 This sheet bending agencies are more common, such as the application number 200910014823. 9,201010180069 Chinese invention patent applications. 9,201010564423. 8, the folding means bending mode are used to rotate the arc-shaped bent parts.
 通过圆弧形折弯件旋转折弯的板材折弯机构，机构简单，因而使用也较为广泛。  plate bending mechanism by rotating bending arc-shaped bent parts, the mechanism is simple, and thus use more widely. 但这种板材折弯机构在实际使用中也存在较多的缺点：一、板材折弯时，已折弯轮廓容易和圆弧形折弯件发生干涉，容易导致折弯的角度不准，特别是对于开槽后折弯的板材，容易导致折角位置的折断；二、该板材折弯机构体积比较庞大，不够紧凑；三、板材折弯一个角度的时候，圆弧形折弯件在围边板材表面滑移的距离大，造成围边板材表面的划伤，从而影响加工质量；四、板材折弯时折弯力臂长，材料变形所产生的扭矩就大，需要电机的功率大。 However, this sheet folding means in practical use there are also many disadvantages: First, when the sheet metal bending, bending contour has arcuate bent parts easily and interfere, easily lead bend angle allowed, especially After notching for bending sheet metal, easily lead to broken knuckle position; two, the sheet folding means the volume is relatively large, compact enough; three, plate bending angle when an arc-shaped bent parts in the sides slip sheet surface distance, causing scratches around the edges of the plate surface, thus affecting the processing quality; four, when bending sheet metal bending arm length, the torque generated by the deformation of the material on the big, big need for electrical power.
 另一种是滚轮滚压的折弯方式，该板材折弯机构包括若干个滚轮，主要是通过这些滚轮的来回配合实现板材的折弯，从而得到字的轮廓。  Another way is to bend the rolling roller, the sheet folding means comprises a plurality of rollers, mainly through the rollers to achieve bending back and forth with the sheet, whereby the outline of the word.
 通过若干个滚轮组合的滚压方式实现板材的折弯，其优点是板材折弯时弧度比较光顺。  to achieve a number of bent sheet by a combination of rolling wheel way, the advantage is relatively smooth curvature of the plate bending. 但这种方式的缺点也非常明显，无法折出轮廓的内外角，同时这个滚压方式最大的问题是难于精确控制轮廓的成形精度，因而，通常出现在一些半自动的弯字机设计上。 But the disadvantage of this approach is also very clear, you can not break out of the inner and outer corner contours, while the rolling biggest problem the way it is difficult to precisely control the forming precision contour, therefore, usually in some semi-bending word machine design.
 本发明提供了一种基于伸缩折弯棒的板材折弯机构，能够克服圆弧形折弯件旋转的折弯方式和滚轮滚压的折弯方式的缺点，实现低划伤、低干涉的高效率折弯。  The present invention provides a sheet folding mechanism based telescopic rod bent, it is possible to overcome the disadvantages of the bending mode and manner of the arc-shaped rolling rollers rotating bending bent parts, low scratch, low interfere with efficient bending.
 一种基于伸缩折弯棒的板材折弯机构，包括支架、与所述支架轴接的下旋转台和上旋转台、与所述支架固定且位于所述下旋转台和上旋转台之间的折弯挡板、安装在所述支架上带动下旋转台和上旋转台转动的电机，所述的折弯挡板的两侧均设有折弯棒，所述下旋转台或者上旋转台安装有驱动所述折弯棒伸缩的驱动机构。  based telescopic rod bent sheet metal bending mechanism, including stents, stent axis rotary table with the next pick on the rotary table and, with the bracket and is located on the lower rotary table and rotary table bend between the baffle, mounting on the rotary table and the rotary table is rotated on a motor driven by the bracket, on both sides of the baffle has a bend bending rods, the lower rotary table or on rotary table mounted drive rod drive mechanism of the folding retractable.
 本发明中下旋转台、上旋转台中的上下是指垂直方向的上下，表明其为不同的旋转台。  Under the present invention, the rotary table, the rotating upper and lower station refers to the vertical in the vertical direction, indicating its different rotary table.
 本发明在折弯挡板的两侧设有折弯棒，通过驱动机构驱动伸缩，在折弯挡板的两侧可选择性地弹出折弯棒或缩回折弯棒，在电机的驱动下，将从折弯挡板的板材出口出来的板材折弯，折弯至指定角度。  The present invention is provided on both sides of the baffle bent bending rod, driven by the drive mechanism stretching, bending both sides of the baffle selectively eject or retract the rod bent bent rod, in the motor Driven by the baffle plate will bend exit plate bending, bending to a specified angle.
[0011 ] 作为优选，所述下旋转台和上旋转台为相互平行的圆盘结构，结构简单，旋转稳定性好。  Advantageously, the rotary table and the lower table is parallel to each other on the rotary disc structure, simple structure, good rotational stability.
 所述折弯棒用于折弯板材，作为优选，所述折弯棒垂直于所述下旋转台的台面布置，从而折弯棒对板材的施力更均匀，更有利于将板材折弯，折弯效果也更好。  The bending bar for bending sheet metal, as is preferred, the bending rods arranged perpendicular to the lower table of the rotary table, thereby urging the plate against bending bar more uniform, more conducive to the sheet bending, bending effect is better.
 作为优选，所述的下旋转台和上旋转台上设有供折弯棒通过的通孔。  Advantageously, under the rotary table and the rotary table is provided with a through hole for bending the rod passes. 因此，折弯挡板两侧的折弯棒伸出时，直接穿过下旋转台和上旋转台，保证了折弯棒的固定强度，从而容易将板材折弯，保证折弯效果。 Therefore, both sides of the bending rod bending baffle extends directly through the rotary table and under the rotary table to ensure that the bending rod fixation strength, which tends to bend the sheet to ensure the bending effect.
 所述折弯棒可布置在下旋转台和上旋转台的外缘或者下旋转台和上旋转台的内部区域，由于材料折弯过程中是靠电机扭力来对抗材料变形时所产生的力，因而力臂大，同样的材料变形所产生的扭矩就大，需要电机的功率就大，作为优选，所述折弯棒靠近所述折弯挡板的板材出口，使得等效的折弯半径可以大大减小，使得同等功率的电机产生的折弯扭力更大。  The outer edge of the bending rod can be disposed below the rotary table of the rotary table and the upper or lower region of the rotary table and the interior of the rotary table, is due to the material during the bending by the motor torque to resist deformation of the material produced , and hence the large arm, the torque generated by the same material on the large deformation, the required motor power is large, as is preferred, the bending of the bending rod baffle plate near the outlet, so that the equivalent bending radius can be greatly reduced, making the same power greater bending torque generated by the motor.
 折弯棒的横截面形状可以是圆形、三角形、四方形及其他多面体形状，为了降低应力集中，三角形、四方形及其他多面体形状的折弯棒需要进行倒角处理。  The cross-sectional shape bent rod may be circular, triangular, square and other polyhedral shape, in order to reduce stress concentration, triangular, square and other polyhedral shape bent rods need to be chamfered. 作为优选，所述折弯棒经倒角处理并且横截面为三角形，可以提供更好的刚性，降低折弯过程的表面划伤。 Advantageously, the bending rod chamfered and a triangular cross section, may provide a better rigidity, the bending process to reduce surface scratches.
 驱动机构具体可选用多种形式，作为优选，所述的驱动机构为气缸，结构简单，使用方便。  Specifically drive mechanism can be used in various forms, as preferred, the drive means of the cylinder, simple structure, easy to use.
 作为优选，所述驱动机构固定设置在下旋转台上，使得折弯棒从下旋转台伸出，由于折弯挡板中间的板材受重力影响，会顺势落在下旋转台上，下旋转台提供一个支撑面，因而，将驱动机构固定设置在下旋转台上，方便折弯。  Advantageously, the drive mechanism provided on the lower rotary table is fixed, so that the bending rod extends from the rotary table, due to bending of the middle baffle plate by the influence of gravity, will fall under homeopathic rotary table, rotating table provides a supporting surface, therefore, the driving mechanism provided on the lower rotary table is fixed, easy to bend.
 下旋转台和上旋转台通过电机驱动，有两种优选的形式，一种是，所述的下旋转台和上旋转台通过连接件固定连接，所述的电机为一台，该电机通过减速机与下旋转台或者上旋转台齿轮配合，从而带动下旋转台、上旋转台、连接件、折弯棒和驱动机构一起转动，通过一台电机和一台减速机就可以达到板材折弯的目的，容易控制。  under the rotary table and the rotary table driven by a motor, there are two preferred forms, one is under the rotary table and the rotary table by means of the connecting member is fixedly connected, the motor is provided, which motor through reducer rotating table or on the lower gear with a rotary table, thus driven turntable on the turntable, rotating connectors together, bending the rod and drive mechanism, through a motor and a gear plate can be achieved The purpose of bending, is easy to control. 更进一步优选，所述的电机通过减速机与上旋转台齿轮配合，所述的驱动机构固定设置在下旋转台上，分别合理布置在上旋转台和下旋转台上，使得本发明基于伸缩折弯棒的板材折弯机构，结构更紧凑，使用更方便。 Even more preferably, the motor through reducer and gear with the turntable, the drive mechanism of the rotary table is fixed in the next set were reasonable arranged on the rotary table and rotating table, making this invention is based on the telescopic folding Plate bending rod mechanism, more compact, easier to use.
 另一种是，所述的电机为二台，每台电机通过各自的减速机与上旋转台或下旋转台齿轮配合，且上旋转台和下旋转台同步旋转。  Alternatively, the motor for the two sets, each motor by the rotation of the respective gear with the rotary table or the lower table with the gear, and the rotary table and rotating table rotate synchronously. 通过同步驱动的方式，可以避免板材折弯过程中连接件的干扰影响，上旋转台、下旋转台各自固定，上旋转台和下旋转台通过电机进行同步驱动，真正实现无干涉死区的折弯过程，折弯效果更好。 By way of synchronous drive, the connecting member can be avoided interference sheet during the bending, on a rotary table, each rotating table is fixed, on a rotary table and rotating table driven synchronously by a motor, without interference truly dead zone off bending process, bending better.
 与现有技术相比，本发明具有如下优点：  Compared with the prior art, the present invention has the following advantages:
 本发明将圆弧形折弯件旋转的折弯方式改为通过两根可自由伸缩的折弯棒实现折弯，由于不需要折弯的一侧的折弯棒可以收缩回去，因而在折弯过程中可以避免现有的板材折弯机构中由于圆弧形折弯件的存在所导致的折弯干涉问题。  The invention will be arc-shaped bent parts bent way to achieve bending by rotating two free expansion of bending rods, sticks do not need to bend due to the bending side can shrink back, thus avoid existing bending mechanism bends the sheet due to the presence of the arc-shaped bent parts of the interference problem caused by the bending process. 此外折弯棒可以布置的离折弯挡板的距离更近，也就是等效的折弯半径可以大大减小，使得同等功率的电机产生的折弯扭力更大，便于折弯厚的不锈钢板材。 Further bending of the rod can be disposed a distance away from the folded flap closer, which is the equivalent of the bend radius can be greatly reduced, so that the same power greater bending torque generated by the motor, to facilitate bending thick stainless steel plate . 同时，折弯半径的减小还可以减小折弯过程中板材折弯机构和板材的接触距离，从而有效地降低表面划伤。 At the same time, reducing the bending radius of the contact distance can be reduced during the bending of the sheet folding means and the sheet, thus effectively reducing the surface scratches.
附图说明 Brief Description
 图I为现有的通过圆弧形折弯件旋转折弯的板材折弯机构的结构示意图，其中，图I中（a)为正视图，图I中（b)为图I中（a)CC向剖视图，图I中（C)为该板材折弯机构在折弯过程中出现干涉的示意图；  Figure I is a schematic view of the structure of conventional rotating through an arc-shaped bent parts bent sheet folding means, wherein, in Figure I (a) is a front view, FIG. I, (b) as in FIG. I (a) CC to the cross-sectional view, a schematic view of the interference in the digraph I (C) appears for the sheet folding means in the bending process;
 图2为现有的通过滚轮滚压折弯的板材折弯机构的结构示意图； 图3为本发明基于伸缩折弯棒的板材折弯机构的一种结构示意图，其中，图3中Ca)为正视图，图3中（b)为图3中（a) AA向剖视图；  Figure 2 is a schematic structural view of conventional wheel rolling by bending sheet folding means;  Figure 3 is a schematic structural view of the invention based on the telescopic rod bent sheet folding means, wherein, Figure 3 Ca) is a front view, FIG. 3 (b) to Fig. 3 (a) AA to the cross-sectional view;
图4为本发明基于伸缩折弯棒的板材折弯机构的另一种结构示意图，其中，图4中Ca)为正视图，图4中（b)为图4中（a) BB向剖视图；  Figure 4 is a schematic view of another configuration of the invention based on the telescopic rod bent sheet folding means, wherein, FIG. 4 Ca) is a front view, FIG. 4 (b) of FIG. 4 (a) BB to the cross-sectional view;
 图5为本发明基于伸缩折弯棒的板材折弯机构的板材折弯过程的示意图，其中，图5中（a)为板材向一个方向折弯，图5中（b)则为板材向另一个方向折弯。  Figure 5 is a schematic diagram of the sheet bending process based telescopic rod bent sheet folding means, wherein, Fig. 5 (a) a sheet folded in one direction, Fig. 5 (b) was sheet metal bending in the other direction.
具体实施方式 DETAILED DESCRIPTION
 如图I所示，为现有的通过圆弧形折弯件旋转折弯的板材折弯机构，包括支架(未画出）、与支架轴接的下旋转台23和上旋转台25、两块圆弧形折弯件24、折弯挡板26以及安装在支架上带动下旋转台23和上旋转台25转动的电机21。  As shown in Figure I, for the current through the arc-shaped bent sheet metal bending machine member rotating bending, comprises a bracket (not shown), into contact with the support shaft 23 under the rotary table and the rotary table 25, two arc-shaped bent parts 24, bending baffles 26 mounted on the carriage and driven under the rotary table 23 and the motor 25 rotates the rotary table 21. 下旋转台23和上旋转台25通过两块圆弧形折弯件24固定连接，两块圆弧形折弯件24均设置在下旋转台23和上旋转台25的外缘，折弯挡板26位于下旋转台23和上旋转台25之间，折弯挡板26由两块直板组成，两块直板间为板材通过的空间，折弯挡板26的板材出口两侧刚好为两块圆弧形折弯件24。 Under the rotary table 23 and the rotary table 25 by two arc-shaped bend 24 is fixedly connected to the two arc-shaped bent parts 24 are set to the outer edge of the rotary table 25 of the next 23 and the rotary table, bending baffle 26 located under the turntable on the turntable between 23 and 25, bending baffle 26 consists of two straight composed of two straight for the space between the plates by bending both sides of the outlet baffle plate 26 is just for two round arc bending 24. 电机21通过减速机22与下旋转台23齿轮配合，电机21通过减速机22带动下旋转台23、上旋转台25和两块圆弧形折弯件24 —起转动，折弯挡板26则静止不动，从折弯挡板26中间出来的板材27，板材27受到圆弧形折弯件24 —个沿圆周切线方向的扭力，通过圆弧形折弯件24旋转的方式实现板材27的折弯。 Motor reducer 21 through 22 and the next gear with the rotary table 23, the motor 21 is driven by the gear at 22 rotary table 23, the rotary table 25 and two arc-shaped bent parts 24-- starting rotation, bending baffle 26 stationary baffles 26 from bending out of the middle of the plate 27, plate 27 by the arc-shaped bent parts 24-- circumferentially tangential torque to achieve the rotation plate 27 by way of 24 arc-shaped bend pieces Bend. 这种结构的主要缺点是板材折弯时，干涉区域太大，已折弯轮廓容易和圆弧形折弯件24发生干涉，如图I (c)所示，容易导致折弯的角度不准。 The main disadvantage of this construction is that when the plate is bent too much interference region, and is easily bent contour arcuate bending member 24 interferes, as shown in Figure I (c), the bend angle is allowed to easily lead . 此外，圆弧形折弯件24也不利于小型化，致使板材折弯机构较大，也会造成板材27表面的划伤比较严重。 In addition, the arc-shaped bend 24 is not conducive to miniaturization, resulting in a larger sheet folding mechanism 27 will cause scratches the surface of the plate is more serious.
 如图2所示，为现有的通过滚轮滚压折弯的板材折弯机构，包括滚轮31、滚轮32、滚轮33，通过这几个滚轮的来回配合实现板材34的折弯，从而得到字的轮廓。  As shown, for the conventional wheel rolling by bending sheet folding means 2, including the wheel 31, roller 32, rollers 33, by these rollers to achieve bending back and forth with the sheet 34, resulting contours of the word. 但这种滚压方式无法折出字轮廓的内外角，同时也难于精确控制字轮廓的成形精度。 However, this method can not roll off the inner and outer contour angle word, but also difficult to accurately control the forming precision word profile.
 如图3、图4所示，本发明基于伸缩折弯棒的板材折弯机构，包括支架(未画出）、与支架轴接的下旋转台9和上旋转台10、与支架固定且位于下旋转台9和上旋转台10之间的折弯挡板8、安装在支架上带动下旋转台9和上旋转台10转动的电机12，折弯挡板8的两侧分别设有伸缩式的右折弯棒3、伸缩式的左折弯棒4，右折弯棒3和左折弯棒4分别通过右气缸I和左气缸2驱动伸缩，右气缸I和左气缸2均固定设置在下旋转台9上。  FIG. 3, FIG. 4, the present invention is based on the telescopic rod bent sheet folding mechanism comprises a bracket (not shown), on the table 9 and into contact with the support shaft 10 under the rotation of the rotary table, and the stent fixed and located at both sides of the rotary table 9 and the rotary bending station 10 between the baffle plate 8 mounted on the carriage to drive under the rotary table 9 and the rotary table 10 rotates the motor 12, the shutter 8 are provided bending There telescopic rod 3 right bending, left bending telescopic bars 4, right and left bent bending bar 3 bar 4, respectively through the right and left cylinder I driven telescopic cylinder 2, the left and right cylinder I and the cylinder 2 are provided in the lower fixed rotation Taiwan 9. 下旋转台9和上旋转台10为相互平行的圆盘结构，右折弯棒3和左折弯棒4垂直于下旋转台9的台面布置。 By rotating the rotary table 9 and table 10 parallel to each other disc structure, the right and left bending wire 3 bent rod 4 is perpendicular to the table 9 at the rotary table arrangement. 下旋转台9和上旋转台10均设有供右折弯棒3和左折弯棒4通过的通孔，在右气缸I和左气缸2分别驱动下，右折弯棒3和左折弯棒4可以穿过上述对应的通孔。 Under the turntable on the turntable 9 and 10 have a bent rod for the right and left three bend rods pass through holes 4, in the right and left cylinder 2 cylinder I were driving down, right and left three bend rods bent rod 4 can wear through said corresponding through-hole. 右折弯棒3和左折弯棒4均经倒角处理并且横截面为三角形。 Right bending rods 3 and 4 were left bent rods and chamfered triangular cross-section. 本发明中右折弯棒3和左折弯棒4以及对应的右气缸I和左气缸2，以正对折弯挡板8的板材出口为正向，确定左和右。 The present invention is a right and a left bend bending rod 3 bars 4 and the corresponding right and left cylinder cylinder I 2, is on the bend exit baffle plate 8 is positive, determine left and right.
 如图3所示，下旋转台9和上旋转台10通过连接件7固定连接，电机12和减速机11各为一台，电机12通过减速机11与上旋转台10齿轮配合。  3, the lower rotating table 9 and fixed on the turntable 10 connected by a connecting member 7, the motor 12 and the reducer 11 are each a motor 12 through a speed reducer 11 and the mating gears on the rotary table 10 in FIG. 右折弯棒3和左折弯棒4均靠近折弯挡板8的板材出口，使得同等功率的电机产生的折弯扭力更大。 Right bending rods 3 and 4 were left bent rod baffle plate bending near exit 8, making the same power greater bending torque generated by the motor.
 如图4所示，还包括电机6和减速机5，电机和减速机各为二台，一台电机6通过一台减速机5与下旋转台9齿轮配合，另一台电机12通过另一台减速机11上旋转台10齿轮配合，同步驱动上旋转台10和下旋转台9即上旋转台10和下旋转台9同步旋转。  4, further comprising a motor 6 and a reducer 5, the motor and reducer are each two units, a motor 6 through a speed reducer 5 and the lower gear with a rotary table 9, another motor 12 through another gear on the rotary table 11 with 10 gears, synchronous drive on the turntable 10 and rotating the rotary table that is 10 units 9 and 9 synchronous rotating turntable. 通过同步驱动的方式，可以避免板材折弯过程中，连接件7的影响，上旋转台10、下旋转台9各自固定，具体可固定在支架上，图中未画出支架。 By way of synchronous drive, the sheet can be avoided during the bending, the connection 7 of the impact member, the rotary table 10, are each fixed at the rotary table 9, concrete can be fixed to the bracket, the bracket not shown. 通过电机6和减速机5、电机12和减速机11进行同步驱动，真正实现无干涉死区的折弯过程，折弯效果更好。 6 through the motor and reducer 5, the motor 12 and gear 11 driven synchronously, truly non-interference in the dead zone of the bending process, better bending effect. 与现有技术中圆弧形折弯件位于上下旋转台的边缘位置相比，图4中右折弯棒3和左折弯棒4比较靠近折弯挡板8的板材出口，使得同等功率的电机产生的折弯扭力更大。 Located at the upper and lower edge positions of the rotary table as compared with the prior art arc-shaped bent parts, the right in FIG. 3 and the left folding bar 4 bar 4 relatively close to the bend bent baffle plate opening 8, so that the same power generated by the motor greater bending torque. 图4与图3相比，图3中右折弯棒3和左折弯棒4更靠近折弯挡板8的板材出口，同等功率的电机产生的折弯扭力更大。 Figure 4 compared to Figure 3, the rod 3 and the left and right bending bending rod 4 is closer to the outlet 8 of the bent baffle plate, the same power greater bending torque generated by the motor 3 in FIG.
 本发明的基于伸缩折弯棒的板材折弯机构的具体工作原理如下：  The present invention is based on the specific working principle of the telescopic rod bent sheet folding means as follows:
 如图3、图5所示，折弯开始时，关闭右气缸I和左气缸2，使得右折弯棒3和左折弯棒4缩回，送料装置将板材13从折弯挡板8的板材出口送料到指定距离后停止，确定需要折弯方向和角度，根据折弯方向，相应的弹出或缩回右折弯棒3和左折弯棒4并确定电机12的转动方向，根据折弯的角度，确定电机12的转动角度。  FIG. 3, Fig. 5, when the bending starts to close the left and right cylinder I and the cylinder 2, such that the right and left bending wire 3 bent rod 4 is retracted, the sheet feeding apparatus 13 from bending baffle 8 plate exports expected to send a specified distance after stop, determine the direction and angle of bend required, according to the bending direction, eject or retract the corresponding right and left three bend rods bent rod 4 and determine the direction of rotation of the motor 12, according to the bend angle, determine the angle of rotation of the motor 12. 如图5中（a)所示，弹出左折弯棒4,缩回右折弯棒3,电机12通过减速机11带动下旋转台9、上旋转台10、连接件7、右折弯棒3、左折弯棒4、右气缸I和左气缸2 —起向逆时针方向转动，由于左折弯棒4弹出，则板材13会在扭力的作用下向一个方向折弯，折弯至一定角度后停止。 Figure 5 (a), the eject left bending bars 4, right bending rod 3 is retracted, the motor 12 through the driven gear 11 under the rotary table 9, the rotary table 10, the connecting member 7, right bending rod 3, the left fold curved rod 4, right and left cylinder cylinder I 2-- from counterclockwise rotation, with the left stick bending 4 pop, the plate 13 will bend in one direction under the action of torsion, bending back to a certain angle stops. 如图5中（b)所示，弹出右折弯棒3,缩回左折弯棒4,电机12通过减速机11带动下旋转台9、上旋转台10、连接件7、右折弯棒3、左折弯棒4、右气缸I和左气缸2—起向顺时针方向转动，由于右折弯棒3弹出，则板材13会在扭力的作用下向另一个方向折弯，折弯至一定角度后停止，从而完成折弯过程。 Figure 5 (b), the pop-up rod 3 right bending, left bending rod 4 is retracted, the motor 12 through the driven gear 11 under the rotary table 9, the rotary table 10, the connecting member 7, right bending rod 3, the left fold bending bars 4, right and left cylinder I from 2- cylinder is rotated clockwise, right bending rod 3 due to the pop-up, the sheet 13 will bend in the other direction under the action of torque, after bending to a certain angle stop, thus completing the bending process.
图4所示结构的基于伸缩折弯棒的板材折弯机构的工作原理同上。  The working principle of the structure shown in Figure 4 the sheet folding mechanism based telescopic rod bent above.
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