CN102886407A - bending and machining device for arc-shaped part - Google Patents

Abstract

The invention relates to a bending processing device for arc-shaped parts, which includes a support and a rotating arm arranged on it, and a pressing wheel is arranged on the rotating arm. Press-formed support wheels, the support wheel is also provided with a support wheel mounting frame, the support wheel is arranged on the support wheel mounting frame and distributed in the corresponding parts to be processed when rolling forming The left and right support wheels on the left and right sides of the pressure wheel, the left and right support wheels have outer peripheral surfaces for rolling and supporting the two ends of the bent part of the corresponding part to be bent. When the turning arm is turned from top to bottom, it rolls and fits with the middle part of the bent part of the corresponding part to be bent, so that the outer peripheral surface of the middle part of the bent part of the part to be bent is concave and deformed. The invention provides a bending processing device for an arc-shaped part, which can be bent from the middle of the part to be bent so as not to damage the structures at both ends of the part to be bent.

Description

A bending processing device for arc-shaped parts

technical field

The invention relates to an arc part bending processing device for processing arc parts.

Background technique

In actual production, some arc-shaped parts are often used, such as U-shaped pipes, U-shaped bolts, arc-shaped pipe joints, etc. These arc-shaped parts need to be bent on site with bending devices. Bending device such as the "manual pipe bending device" disclosed in Chinese patent CN202224485U, the manual pipe bending device includes a support and a turret connected to the support in rotation. The booster rod, the turret and the booster rod together form a rotating arm, the inside of the turret is respectively connected to the first roller and the second roller through the first fixed shaft and the second fixed shaft, and the outer peripheral surfaces of the first roller and the second roller are All are provided with ring grooves adapted to the outer peripheral arc surfaces of the corresponding parts to be bent, and supports are also provided on the supports. When in use, the front end of the part to be bent passes through the support, enters between the first roller and the second roller, and protrudes out. Turning the force bar, the turret moves in a circle with the first fixed shaft as the center. The first roller and the second roller are always close to the part to be bent. The first roller is equivalent to a support wheel, and the second roller is equivalent to a pressure wheel. The pressure wheel rolls from the rear end of the part to be bent to the front end of the part to be bent. In the middle, the parts to be bent are gradually bent to form the expected arc structure. The problem with this double-roller bending device is that the pressure roller must roll from one end of the part to be bent to the other end of the part to be bent to realize the arc processing of the part to be bent. When both ends of the part to be bent have working structures , the existing bending device cannot be applied. For example, in the bending process of U-shaped bolts, both ends of the U-shaped bolts are provided with external threads. If the existing bending device is used, the pressure roller will have The external thread at both ends of the U-shaped bolt may be squeezed and the U-shaped bolt cannot be used; at the same time, when the pressure roller rolls from one end of the part to be bent to the other end, the pressure wheel will move forward with the part to be bent. Therefore, the rear end of the part to be bent must be limited by the support, which makes it necessary to bend it into a part, the actual material used in the part manufacturing process must be longer than the use length of the part, resulting in material waste and Increased production costs.

Contents of the invention

The object of the present invention is to provide a bending processing device for arc-shaped parts that can be bent from the middle of the part to be bent so as not to damage the structures at both ends of the part to be bent.

In order to solve the above problems, the technical solution of the present invention is:

A bending processing device for arc-shaped parts, comprising a support and a rotating arm with a rotating axis extending along the front-to-back direction; Cooperate with the supporting wheels that make the corresponding parts to be bent be rolled and formed, and the support wheel is also provided with a supporting wheel mounting frame, and the supporting wheel includes a supporting wheel that is arranged on the supporting wheel mounting The left and right support wheels are distributed on the left and right sides of the pressure wheel when the parts are rolled and formed. On the outer peripheral surface, the pressing wheel has an outer peripheral surface that rolls and fits with the middle part of the bent part of the corresponding part to be bent when the rotating arm is turned from top to bottom, so that the middle part of the bent part of the part to be bent is concavely deformed.

The supporting wheel mounting frame includes a left supporting wheel mounting frame and a right supporting wheel mounting frame which are separately arranged on the left and right sides, and the bending device also includes a device for adjusting the distance between the left and right supporting wheel mounting frames. Spacing adjustment mechanism.

The distance adjustment mechanism includes guide rails provided on the support which extend along the left and right directions, and the left and right supporting wheel mounting frames are provided with guide rail matching parts that slide and cooperate with the guide rails. The distance adjustment mechanism also includes a lead screw axially extending along the left and right directions and cooperating with the axial movement limit of the support. The left and right ends of the lead screw are respectively provided with left-handed external threads and right The left and right support wheel mounting frames are respectively provided with left and right-handed internal threads that are suitable for the left-handed and right-handed external threads.

The left and right support wheel mounting frames are respectively provided with guide slots for the left and right support wheel mounting frames whose guiding direction extends along the left and right directions, and the described supports are respectively provided with mounting holes for mounting with the left and right support wheels. The left and right support wheel mounting frame threaded holes corresponding to the positions of the frame guide slots, the left and right support wheel mounting frame guide slots and the corresponding left and right support wheel mounting frame threaded holes are respectively connected with left and right support The left and right support wheel mounting frame bolts that are fixed and locked by the wheel mounting frame.

The rotating arm is also provided with a rotating arm guiding long hole whose guiding direction is consistent with the extending direction of the rotating arm. A central roller frame is fixed between the left and right support wheel mounting brackets on the seat, and the center roller frame is provided with a guiding direction extending along the up and down direction and used for rolling the corresponding parts to be bent by the pressure rollers. A vertical guide mechanism that cooperates with the rolling guide of the rotating shaft of the press wheel during pressing.

The vertical guide mechanism includes a cross groove whose groove depth extends in the up and down direction, and the cross groove is composed of a horizontal groove extending in the left and right direction for the pressure roller to pass from top to bottom and a vertical groove extending in the front and rear direction As a configuration, the vertical groove has a groove wall whose guiding direction extends along the vertical direction to realize the rolling guiding cooperation between the vertical guiding mechanism and the rotating shaft of the pressing wheel.

A central roller frame is fixed between the left and right support wheel mounting brackets on the support, and a cross groove with a groove depth extending in the up and down direction is arranged on the center roller frame, and the cross groove It is composed of a horizontal groove extending in the left and right direction for the pressure roller to pass through from top to bottom and a vertical groove extending in the front and rear direction. The two ends of the two ends are guided to match the groove wall, and the screw is provided with an annular groove between the left and right-handed external threads, and the center roller frame is provided with a groove inserted in the annular groove and The groove wall of the annular groove is limitedly fitted with the limiting plate that enables the axial movement of the screw to be limited.

A hinge bracket is fixed on the left side of the left support wheel mounting bracket on the support, and the rotating arm includes a U-shaped turret hingedly connected with the hinge bracket, and the rotating arm also includes An afterburner rod for hand-holding is arranged on the closed end of the turret.

The reinforcing rod is fixedly connected with the turret through threaded connection or through welding.

The hinge bracket is threaded with a positioning screw extending axially along the left and right directions, and the right end of the positioning screw has a positioning end surface for blocking and positioning cooperation with the left end surface of the corresponding part to be bent.

The beneficial effects of the present invention are as follows: through the cooperation of the pressing wheel and the left and right supporting wheels distributed on the left and right sides of the pressing wheel, the corresponding parts to be bent are rolled and bent, and the two ends of the corresponding parts to be bent are respectively placed On the left and right supporting wheels, the pressing wheel rolls down from the middle of the part to be bent when the rotating arm is turned from top to bottom. With the cooperation of the rolling support of the left and right supporting wheels, the middle part of the part to be bent is rolled Press into a concave arc. Through the cooperation of three rollers, the part to be bent starts to deform from the middle, without damaging the structure at both ends of the part to be bent, and can be applied to U-shaped bolts and other situations where there are working structures at both ends; at the same time, the part to be bent starts to deform from the middle, The two ends of the part to be bent are directly supported and limited by the left and right support wheels, and there is no need to limit the structure of the redundant part of the part to be bent, which saves raw materials and reduces production costs. the

Description of drawings

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is a structural schematic diagram of the distance adjusting mechanism in Fig. 1;

Fig. 3 is a schematic structural view of the support in Fig. 1;

Fig. 4 is a schematic structural view of the left support wheel installation frame in Fig. 1;

Fig. 5 is a schematic structural view of the right support wheel mounting bracket in Fig. 1;

Fig. 6 is a schematic structural view of the hinge bracket in Fig. 1;

Fig. 7 is a schematic structural view of the center roller frame in Fig. 1;

Fig. 8 is a structural schematic diagram of the rotating arm in Fig. 1;

Fig. 9 is a schematic structural view of the lead screw in Fig. 1 . the

Detailed ways

An embodiment of an arc-shaped part bending processing device is shown in Figures 1 to 9: it includes a support 1, and the support is provided with a dovetail-shaped guide rail 18 whose guiding direction extends along the left and right directions, and the guide rail 18 runs from left to right. The hinge support 13, the left support wheel mounting frame 21, the center roller frame 5 and the right support wheel mounting frame 3 are arranged in sequence, the hinge support 13, the left support wheel mounting frame 21, the center roller frame 5 and the right support wheel mounting frame 3 The bottoms are all provided with guide rail matching parts adapted to the guide rail 18, wherein the hinge bracket 13 and the center roller frame 5 are fixedly assembled with the support 1 through corresponding bolts, and there are two mounting brackets for the left and right supporting wheels. The spacing adjustment mechanism for adjusting the spacing between the two. The spacing adjustment mechanism includes a screw 2 arranged in the guide rail 18. The left and right ends of the screw 2 are respectively provided with a left-handed external thread 2-1 and a right-handed external thread 2-1 with a reverse direction of rotation. External thread 2-2, left and right-handed internal threads respectively fitted with left-handed and right-handed external threads on the guide rail matching portion of the left and right support wheel mounting brackets. On the guide rail 18, an annular groove 2-3 is provided between the left and right-handed external threads to realize the axial limit cooperation between the screw 2 and the support 1, and the guide rail matching part of the center roller frame 5 is a plate-shaped structure 5 -1, a U-shaped groove 5-2 with the opening facing down is provided on the guide rail matching part of the center roller frame 5, and the U-shaped groove 5-2 is inserted into the annular groove 2-3 of the lead screw 2, and the center roller frame 5 The guide rail matching part of the plate-shaped structure cooperates with the groove wall of the annular groove 2-3 so that the axial movement of the screw 2 is limited. Square structure 19, the left and right support wheel mounts are respectively provided with the left support wheel mount guide elongated hole 16 and the right support wheel mount guide elongate hole 17 extending along the left and right directions, and the bearing 1 is respectively provided with The left and right supporting wheel mounting frame threaded holes corresponding to the guide long holes of the left and right supporting wheel mounting frames, and the left and right supporting wheel mounting frame guiding long holes are respectively connected with the corresponding left and right supporting wheel mounting frame threaded holes. 1. The left support wheel mounting frame bolt 14 and the right support wheel mounting frame bolt 15 that the right support wheel mounting frame carries out fixed locking. The guide rail matching part of the hinge bracket 13 is provided with a through hole 23 for the left end of the leading screw 2 to pass through, and the guide rail matching part of the center roller frame 5 constitutes a limiting plate for the axial movement of the leading screw 2, so that the rotating leading screw 2. It can drive the left and right supporting wheel mounting frames to move relatively or oppositely. After the position of the left and right supporting wheel mounting frames is adjusted, the left and right supporting wheel mounting frames can be locked respectively through the bolts of the left and right supporting wheel mounting frames. fixed. Hinge bracket 13 is hinged with the rotating arm that axis of rotation extends along front-back direction, and rotating arm comprises the U-shaped turret 8 that is hingedly connected with hinge bracket 13 and is arranged on the closed end of turret 8 and is used for hand-held booster bar 9 , the left end of the booster rod 9 is threadedly connected with the turret 8, and the two side walls of the turret 8 are provided with a rotating arm guiding slot 20 whose guiding direction is consistent with the extending direction of the rotating arm. For the rolling construction of the corresponding parts to be bent and the pressure wheel 7, the left support wheel 12 and the right support wheel 4 respectively with rotating shafts, the rotating shaft 10 of the pressure wheel 7 is guided and rolled in the guide slot 20 of the rotating arm, and the left support wheel 12 Rotation is assembled on the left support wheel mounting frame 21, and the right support wheel 4 is rotationally assembled on the right support wheel mounting frame 3. When the corresponding parts 22 to be bent are rolled and constructed, the left and right support wheels are distributed on the left side of the pressure wheel 7. , right sides, the left and right support wheels have outer peripheral surfaces for rolling and supporting cooperation with the two ends of the bent part of the corresponding parts to be bent, and the outer peripheral surfaces of the left and right support wheels are provided with corresponding parts to be bent 22 An annular groove adapted to the arc surface of the outer circumference, and the pressure roller 7 has a rolling fit with the middle part of the bent part of the corresponding part to be bent when the rotating arm is turned from top to bottom, so that the middle part of the bent part of the part to be bent goes down For the concave deformed outer peripheral surface, the outer peripheral surface of the pressure roller 7 is also provided with an annular groove adapted to the outer peripheral arc surface of the corresponding part to be bent. The center roller frame 5 is provided with a vertical guiding mechanism whose guiding direction extends along the up-down direction and is used to coordinate with the rotating shaft of the pressing wheel when the pressing wheel rolls and forms the corresponding parts to be bent. The vertical guiding mechanism includes groove depth along the vertical direction. The extended cross groove, the cross groove is composed of a horizontal groove 5-3 extending in the left and right direction for the pressure roller 7 to pass from top to bottom and a vertical groove 5-4 extending in the front and rear direction, the vertical groove 5- 4. There is a groove wall where the guide direction extends along the up and down direction to realize the guide fit between the vertical guide mechanism and the two ends of the rotating shaft 10 of the pressure roller 7. The hinge bracket 13 is threaded with a positioning screw 6 extending axially along the left and right directions. The right end of the positioning screw 6 has a positioning end surface for blocking and positioning with the left end surface of the corresponding part 22 to be bent.

When in use, first put the annular groove 2-3 on the lead screw 9 into the U-shaped groove 5-2 on the center roller frame 5, and then assemble the above-mentioned assembly into the guide rail 18 of the support 1. The specific assembly is Through the guide rail matching part of the center roller frame 5 and the dovetail groove of the guide rail, the center roller frame 5 is fixed on the support 1 with bolts, and the left and right support wheel mounting brackets are assembled to the corresponding ends of the screw 2, and the screw 2 Turn to adjust the distance between the left and right support wheel mounting brackets. Install the hinge bracket 13 in the guide rail 18, and fix the hinge bracket 13 and the support 1 through the corresponding bolts, and at the same time, screw the positioning screw 6 into the hinge bracket 13, turn the swing frame down, and rotate the screw according to the size of the part to be bent Adjust the position of the left and right support wheel mounting frames until the outer edge of the left support wheel 12 contacts the outer edge of the pressure roller 7, and lock and fix the corresponding support wheel mounting frame with the left and right support wheel mounting frame bolts. Place the two ends of the part to be bent on the left and right support wheels, adjust the positioning screw to the desired position, so that the left end of the part to be bent is in contact with the positioning end surface of the positioning screw. Press the force bar firmly, according to the principle of leverage, the pressure wheel will generate a greater pressure on the middle part of the part to be bent, and the part to be bent will move downward according to the predetermined track under the limit pressure of the pressure wheel and the left and right support wheels, final shape. If the required bending angle of the part to be bent is less than 180??, the pressing position of the reinforcing rod can be changed. The reinforcing rod can be replaced according to the different parts to be bent. The longer the length of the reinforcing rod, the more Easy to shape. Because during the bending process of U-shaped parts, the angle between the rotating arm and the horizontal direction is constantly changing during the swinging process of the rotating arm from top to bottom, while the pressure roller can only move up and down. According to the law of cosines, the horizontal edge Under the same situation, the distance between the rotating shaft of the rotating arm and the rotating shaft of the pinch roller is changing constantly, so the making of the guiding slot 20 of the rotating arm and the vertical guide mechanism are arranged, so that the vertical axis of the rotating arm can meet the requirements of the rotating arm of the pinching wheel. The movement in the guide long hole 20, after the rotating shaft 10 of the pressure roller 7 is rolled and guided with the vertical guide mechanism, the pressure roller can only move in the up and down direction, so as to meet the bending processing of standard U-shaped parts; for different sizes For the part to be bent, the pressure roller needs to be replaced, and the radius of the annular groove on the pressure wheel is consistent with the radius of the part to be bent to ensure the accuracy of the size. Even if the pipe parts are bent, the pipe will not be flattened.

In other embodiments of the present invention, when only one type of parts to be bent is processed, the distance between the left and right support wheel mounting frames can be fixed, and now the left and right support wheel mounting frames can be integrated Setting, the left and right support wheel mounting brackets can be integrated with the support, of course, the guide rail on the support can also be omitted; through the adjustment of the screw, the continuity of the position adjustment between the left and right support wheel mounting brackets is guaranteed. The bar can also be omitted, and the position of the left and right supporting wheel mounting frames can be adjusted directly through the guide slots of the left and right supporting wheel mounting frames; When the device processes some non-U-shaped standard parts, for example, when bending non-standard C-shaped parts, the vertical guide mechanism and the long guide hole of the rotating arm can be omitted. At this time, the pressure roller can be directly rotated and assembled on the Turn on the arm.

Claims (10)

1. arc part bending processing unit (plant), comprise the cursor that bearing and the upper pivot center that arranges thereof extend along fore-and-aft direction, be provided with the pinch roller that pivot center extends along front and back on the cursor, bending device also comprises and is used in conjunction with pinch roller and makes corresponding part to be curved be rolled into the support wheel of shape, it is characterized in that: also be provided with the support wheel installing rack on the described bearing, described support wheel comprises and is arranged on the described support wheel installing rack and to be distributed in described pinch roller when corresponding part to be processed is rolled into shape left, the left side of right both sides, the right support wheel, a described left side, the right support wheel is useful on the outer peripheral face that is cooperated by bight portion two ends rolling bracketing with corresponding part to be curved, described pinch roller have when from top to bottom overturning with described cursor with make being cooperated by bight portion middle part roll extrusion of corresponding part to be curved part to be curved by the outer peripheral face of concave deformation in the middle part of the bight portion.

2. arc part bending processing unit (plant) according to claim 1, it is characterized in that: described support wheel installing rack comprises left support wheel installing rack and the right support wheel installing rack that split left and right arranges, and described bending device also comprises the distance regulating mechanism that the spacing between the described left and right support wheel installing rack is regulated.

3. arc part bending processing unit (plant) according to claim 2, it is characterized in that: described distance regulating mechanism is included in the guide rail that the guide direction that arranges on the described bearing is extended along left and right directions, a described left side, be provided with the guide rail auxiliary section that is slidingly matched with described guide rail guiding on the right support wheel installing rack, described distance regulating mechanism also comprises axially along left and right directions and extends and move axially the spacing leading screw that cooperates with described bearing, the left side of described leading screw, right-hand member is respectively arranged with the opposite sinistral external thread of rotation direction and dextrorotation external screw thread, a described left side, be respectively equipped with and a left side on the right support wheel installing rack, the suitable left side of joining of dextrorotation external thread rotary, the dextrorotation internal thread.

4. arc part bending processing unit (plant) according to claim 3, it is characterized in that: a described left side, be respectively arranged with guide direction along the left side of left and right directions extension on the right support wheel installing rack, right support wheel installing rack long guiding hole, be respectively equipped with on the described bearing and a described left side, a right support wheel left side corresponding to installing rack long guiding hole position, right support wheel installing rack screwed hole, a described left side, right support wheel installing rack long guiding hole is with corresponding left, be connected with respectively a left side in the right support wheel installing rack screwed hole, right support wheel installing rack is fixed the left side of locking, right support wheel installing rack bolt.

5. arc part bending processing unit (plant) according to claim 1, it is characterized in that: also be provided with the guide direction cursor long guiding hole consistent with described cursor bearing of trend on the described cursor, the rotating shaft rolling guide of described pinch roller is to being assemblied in the described cursor long guiding hole, on the described bearing in a described left side, be installed with the central roller frame between the right support wheel installing rack, be provided with on the described central roller frame that guide direction is extended along the vertical direction and be used for described pinch roller during to corresponding part roll forming to be curved with the rotating shaft rolling guide of pinch roller to the vertical guiding mechanism that cooperates.

6. arc part bending processing unit (plant) according to claim 5, it is characterized in that: described vertical guiding mechanism comprises the cross recess that groove depth is extended along the vertical direction, described cross recess is by extending the translot that passes through for described pinch roller from top to bottom and the vertical slot that extends along fore-and-aft direction consists of along left and right directions, described vertical slot has guide direction and extends along the vertical direction to realize that the rotating shaft rolling guide of described vertical guiding mechanism and described pinch roller is to the cell wall that cooperates.

7. arc part bending processing unit (plant) according to claim 3, it is characterized in that: on the described bearing in a described left side, be installed with the central roller frame between the right support wheel installing rack, be provided with the cross recess that groove depth is extended along the vertical direction on the described central roller frame, described cross recess is by extending the translot that passes through for described pinch roller from top to bottom along left and right directions and the vertical slot that extends along fore-and-aft direction consists of, the cell wall that described vertical slot has that guide direction is extended along the vertical direction and is used for cooperating with the two ends guiding of the rotating shaft of described pinch roller, on the described leading screw in a described left side, be provided with annular groove between the dextrorotation external screw thread, described central roller frame is provided with to be plugged in the described annular groove and makes described leading screw move axially limited limiting plate with spacing cooperation of cell wall of described annular groove.

8. the described arc part bending of any one processing unit (plant) according to claim 1 ~ 7, it is characterized in that: be installed with hinge bracket in the left side of described left support wheel installing rack on the described bearing, described cursor comprises the rotating turret of the U-shaped that is hinged and connected with described hinge bracket, and described cursor also comprises the hand-held boosting-rod that is used on the blind end that is arranged at described rotating turret.

9. arc part bending processing unit (plant) according to claim 8 is characterized in that: described boosting-rod and described rotating turret are threaded connection and are fixedly linked or link to each other by being welded and fixed.

10. arc part bending processing unit (plant) according to claim 8, it is characterized in that: the positioning screw that is threaded on the described hinge bracket and axially extends along left and right directions, the right-hand member of described positioning screw have the location end face that cooperates for the left end end face block location of corresponding part to be curved.

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