CN101474651B - Integrated pipe bender - Google Patents

Abstract

The integrated pipe bending machine of the present invention comprises a machine tool worktable, on which a pipe straightening mechanism, a pipe feeding mechanism and a pipe bending forming mechanism are sequentially installed. The key point of the design is that a cutting device and a pipe head expanding device are also arranged between the pipe feeding mechanism and the pipe bending forming mechanism. The cutting device comprises a hollow rotating shaft for the pipe to pass through, a cutting knife installed on the rotating shaft and a control mechanism for controlling the opening and closing of the cutting knife head; the pipe head expanding device comprises a translatable expanding punch, an expanding clamping die mechanism and a driving mechanism for driving the expanding punch to move, and the expanding punch can be pressed against one side of the above-mentioned expanding clamping die mechanism. The purpose of the present invention is to provide an integrated pipe bending machine that can expand pipe materials and bend pipes at one time.

Description

Integrated pipe bending machine

[technical field]

The invention relates to a pipe bending machine, in particular to a pipe fitting flaring and pipe bending integrated pipe bending machine, which is mainly used in the industry of hardware plumbing pipe fittings. the

[Background technique]

At present, the types of pipe benders involved in plumbing pipe fittings in the hardware industry include hydraulic, electric and mechanical pipe benders. The existing various pipe bending machines usually include a feeding mechanism and a pipe bending forming mechanism, which are used to complete the feeding of the pipe fittings into the pipe bending mold for pipe bending, so that the processed product has a single structure, and the actual bent pipe fittings are often It also needs to carry out flaring treatment on the mouth of the pipe, which makes the subsequent processing and positioning of the bent pipe difficult, and the processing steps are increased, and the production cost is also high, which is not convenient for the popularization and use of the bent pipe product. the

[Content of the invention]

The purpose of the present invention is to overcome the deficiencies of the prior art and provide an integrated pipe bending machine capable of flaring pipe material and forming the pipe at one time. the

In order to solve the above-mentioned technical problems that exist, the present invention adopts the following technical solutions:

An integrated pipe bending machine, which includes a workbench, on which a pipe fitting straightening mechanism, a pipe fitting feeding structure, and a pipe bending forming mechanism are sequentially installed. A material device and a pipe head flaring device, the material cutting device includes a hollow rotating shaft for pipes to pass through, a cutting knife installed on the rotating shaft, and a control mechanism for controlling the opening and closing of the cutting head; the pipe head flaring The device includes a translatable flaring punch, a flaring clamping die mechanism, and a driving mechanism for driving the flaring punch to move, and the flaring punch can lean against one side of the flaring clamping die mechanism;

The above-mentioned integrated pipe bending machine is characterized in that the flare clamping die mechanism includes a movable upper flare die, a fixed lower flare die and a cylinder, the upper flare die is fixedly connected to the movable rod of the cylinder, and the upper , The lower flaring die is located on the outer side of the rotating shaft;

The above-mentioned integrated pipe bending machine is characterized in that the workbench is also provided with a breaking cylinder, and the flared clamping die mechanism is installed on the piston push rod of the breaking cylinder;

The above-mentioned integrated pipe bending machine is characterized in that the driving mechanism includes a first cylinder that drives the expansion punch to move axially perpendicular to the rotation axis, and drives the expansion punch to move axially parallel to the rotation axis. The flaring oil cylinder that moves toward; The first cylinder is fixedly installed on the described workbench, and the push rod of the first cylinder is equipped with a movable frame that can be perpendicular to the axial direction of the rotating shaft, and the described flared oil cylinder is fixedly installed on the movable frame;

The above-mentioned integrated pipe bending machine is characterized in that the control mechanism includes a positioning plate fixed on the outer end of the rotating shaft, a pressure plate for preventing the cutting knife from slipping, the positioning plate and the pressure plate are fixedly connected, and the cutting knife The direction is limited between the positioning plate and the pressure plate;

The above-mentioned integrated pipe bending machine is characterized in that the positioning plate is provided with a plurality of slide grooves, and the pressing plate is correspondingly provided with a plurality of strip-shaped holes for the cutting knives to pass through. There are a plurality of cutting knives, The tails of each cutting knife are correspondingly installed in the above-mentioned chute and can slide along the chute;

The above-mentioned integrated pipe bending machine is characterized in that the control mechanism also includes a bushing set outside the rotating shaft and a cylinder that drives the bushing to move axially, and the chute is also equipped with a cutting knife For the spring ejected outward, each cutting knife is respectively provided with a pressing block with an oblique angle, and the pressing block can lean against the periphery of the outer end of the above-mentioned shaft sleeve. the

The beneficial effects of the present invention are:

1. Through the sequential processing of the pipe straightening mechanism on the workbench, the pipe fitting feeding structure cutting device, the pipe head flaring device and the pipe bending forming mechanism, a pipe fitting product with a bent pipe and one end flared can be obtained, with a high degree of integration. Realized automation, greatly reduced production costs, avoided the emergence of operator uncertainty factors, and ensured production quality;

2. The pipe bending mechanism can bend pipe fittings that are not on the same plane, and the pipe bending is flexible, which is convenient for processing various shapes of plumbing pipe fittings. the

[Description of drawings]

Fig. 1 is the three-dimensional structure schematic diagram of the use state of the present invention;

Fig. 2 is the left view of the present invention;

Figure 3 is an enlarged view of A in Figure 2;

Fig. 4 is a pipe fitting feeding structure and a material cutting device assembly structure diagram in the present invention;

Figure 5 is an enlarged view at B in Figure 4;

Fig. 6 is the structural representation of motor driving rotating shaft by synchronous belt among the present invention;

Fig. 7 is a schematic diagram of the assembly structure of the control mechanism for opening and closing the cutting head, the rotating shaft, and the breaking cylinder in the present invention;

Figure 8 is a schematic diagram of the assembly structure of the rotating shaft and the cutting knife in the present invention;

Fig. 9 is a schematic structural view of positioning plate and pressing plate in the present invention;

Fig. 10 is a schematic structural view of the flaring punch driving mechanism in the present invention;

Fig. 11 is the left view of Fig. 9;

Fig. 12 is a schematic structural view of the elbow forming mechanism in the present invention. the

[Detailed ways]

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

As shown in the figure, the integrated pipe bending machine includes a workbench 1, on which a pipe fitting straightening mechanism 2, a pipe fitting feeding structure 3 and a pipe bending forming mechanism 4 are sequentially installed. A material cutting device and a pipe head flaring device are also arranged between the forming mechanisms 4 . the

The cutting device includes a hollow rotating shaft 51 through which pipes pass, a cutting knife 52 mounted on the rotating shaft 51 and a control mechanism 53 for controlling the opening and closing of the cutting head. In the present invention, the rotating shaft 51 is driven by a motor. The pipe head flaring device includes a flaring punch 61 that can move in translation, a flaring clamping die mechanism 62 and a driving mechanism 63 that drives the flaring punch 61 to move, and the flaring punch 61 can lean against the above-mentioned flaring clamping die Mechanism 62 side. the

Wherein, the pipe straightening mechanism 2 includes a vertically distributed first straightening wheel set 21 and a horizontally distributed second straightening wheel set 22, and a horizontal limiter for pipe fittings to enter is also provided on the front side of the first straightening wheel set 21. bit double wheel 20. The first straightening wheel group 21 and the second straightening wheel group 22 are the schooling wheel groups which are mutually staggered and the shortest distance between adjacent two wheels is equal to the outer diameter of the pipe, and each schooling wheel circumference is provided with a circular wheel groove. the

The pipe feeding structure 3 includes a clamping cylinder 31 installed on the screw mandrel 30 , an upper feeding clamp 32 and a lower feeding clamp 33 , and the upper feeding clamp 32 is fixedly connected to the push rod of the clamping cylinder 31 . When working, the controller on the workbench 1 controls the clamping cylinder 31 to drive the feeding upper clamping die 32 to lift, and after the pipe passes through, the clamping cylinder 31 drives the feeding upper clamping die 32 to press down, so that the pipe is clamped on the feeding, Between the lower clamping dies 32 and 33, then the controller on the workbench 1 starts the motor and drives the screw rod 30 to rotate, and the screw rod 30 drives the clamping cylinder 31, the feeding upper clamping die 32 and the feeding lower clamping die 33 to move forward together , to realize the forward transmission of pipe fittings. After the screw mandrel 30 rotates for a period of time, the feeding upper clamping die 32 is lifted to loosen the pipe, and the controller on the workbench 1 controls the motor to drive the screw mandrel 30 to rotate in the opposite direction. 32 and feeding lower clamping mold 33 get back to original position, complete a feeding. The length of a feeding is determined according to the required length of the elbow, and the length is different. The length that the screw mandrel 30 drives the clamping cylinder 31, the feeding upper clamping die 32 and the feeding lower clamping die 33 moves forward is just different. the

The pipe bending mechanism 4 includes a sliding frame 41, a pipe bending mold 42 mounted on the sliding frame 41, a clamping die 43 and a former 44, and a positioning member 45 which is located on the workbench 1 and can move back and forth along the axial direction of the pipe; The pipe bending die 42 and the clamping die 43 are fixed on the same rotating shaft 46, and the sliding frame 41 is also equipped with a servo motor 47 that drives the rotating shaft 46 to rotate, a clamping die cylinder 48 that drives the clamping die 43 to translate up and down, and drives the former 44 around The profiling cylinder 49 of translation. In the present invention, another servo motor that pushes the sliding frame 41 to translate is also installed on the workbench 1 . The sliding frame 41 translates to complete the pipe bending die 42 and the former 44 close to the pipe fitting, and then the master die 44 and the pipe bending die 42 jointly clamp the pipe fitting; the sliding frame 41 moves in the opposite direction and moves to one side with the pipe fitting to complete the pipe bending . the

The control mechanism 53 includes a positioning disc 531 fixed on the outer end of the rotating shaft 51, a pressing plate 530 for preventing the cutting knife 52 from slipping, a sleeve 532 sleeved on the outside of the rotating shaft 51, and a cylinder 533 for driving the sleeve 532 to move axially. , the positioning disc 531 is fixedly connected to the pressing plate 530 , and the cutting knife 52 is restricted between the positioning disc 531 and the pressing plate 530 in the axial direction. the

Positioning plate 531 is provided with a plurality of chute 5310, and correspondingly has a plurality of bar-shaped holes 5300 for cutting knife 52 to pass on the pressing plate 530, and cutting knife 52 has a plurality of, and each cutting knife 52 afterbody is contained in above-mentioned each correspondingly. In the chute 5310 and can slide along the chute. the

In the present invention, there are three cutting knives 52, two of which are positioning runners, and the third is a runner with blades. Three cutting knives 52 are correspondingly installed in three chute 5310 and can slide along the chute; Each chute 5310 is also provided with a spring that can push the cutting knife 52 outward, and each cutting knife 52 is respectively provided with a pressing block 520 with a beveled angle, and the pressing block 520 can lean against the periphery of the outer end of the shaft sleeve 532 superior. During work, the controller on the workbench 1 controls the cylinder on the control mechanism 53 to push the axle sleeve 532 to move forward, and the axle sleeve 532 presses each oblique angle pressing block 520 to move closer to the wheel center of the rotating shaft 51, so that the three cutting knives 52 compression springs and move closer to the hub of the rotating shaft 51 along the respective chute 5310, like this, the three cutting knives 52 can cut the pipe fittings passing through the rotating shaft 51. the

Flaring clamping die mechanism 62 includes movable upper flared die 621, fixed lower flared die 622 and cylinder, upper flared die 621 is fixedly connected on the movable rod of cylinder, upper and lower flared dies 621,622 are positioned at the One side of the outer end of the rotating shaft 51 . the

The driving mechanism 63 includes a first cylinder 630 that drives the flared punch 61 to move axially perpendicular to the rotating shaft 51 and a flared oil cylinder 631 that drives the flared punch 61 to move axially parallel to the rotating shaft 51; A cylinder 630 is fixedly mounted on the workbench 1 , a movable frame 632 perpendicular to the axial direction of the rotating shaft 51 is mounted on the push rod of the first cylinder 630 , and the flared oil cylinder 631 is fixedly mounted on the movable frame 632 . During work, the first cylinder 630 starts first and drives the movable frame 632 to move, so that the flared punch 61 on the movable frame 632 is aligned with the center of the upper and lower flared dies 621, 622 of the flare clamping die mechanism 62, and then, the second A cylinder 630 stops, and the flaring oil cylinder 631 pushes the flaring punch 61 to move toward the flaring clamping die mechanism 62 at the same time, so that the flaring punch 61 carries out flaring processing on the pipe fittings on the flaring clamping die mechanism 62 . the

Working process of the present invention is as follows:

When working, the blank pipe fittings are clamped by the feeding structure 3 after passing through the pipe fitting straightening mechanism 2 for feeding. The length of a feeding is determined according to the required length of the elbow, and the length is different. The length that the screw mandrel drives the clamping cylinder 31, the feeding upper clamping die 32 and the feeding lower clamping die 33 moves forward is just different. the

After conveying, the pipe enters the hollow rotating shaft 51 on the material cutting device, the front end of the pipe passes through the rotating shaft 51, and the three cutting knives 52 on the rotating shaft 51 are evenly distributed along the circumference of the pipe but do not touch. The controller on the workbench 1 controls the flaring clamping die mechanism 62 on the pipe head flaring device to clamp the front end of the pipe, and then the driving mechanism 63 drives the flaring punch 61 to move and lean against the above-mentioned flared clamping die mechanism The 62 side is flaring. After the flaring is completed, the controller on the workbench 1 controls the flaring clamping die mechanism 62 and the driving mechanism 63 to get back to the original state. the

After the flaring processing of the pipe fittings is completed, the controller on the workbench 1 controls the sliding frame 41 on the pipe bending forming mechanism 4 to approach the workpiece to be bent to prepare for receiving materials. the

Then, the pipe fitting feeding structure 3 performs the second feeding, that is, the pipe fitting moves forward by a length of the piece to be bent. The flaring clamping die mechanism 62 clamps the pipe again, and at the same time starts the motor to drive the rotating shaft 51 and the cutting knife 52 on it to rotate, and cuts the pipe, then the cylinder on the control mechanism 53 returns to its original position, and the three cutting knives 52 Under the action of the spring, they open along the respective chute 5310 , and the oblique angle pressing block 520 on the cutting knife 52 presses the bushing 532 , and the bushing 532 reversely moves back to its original position. the

In order to ensure that the pipe fittings can be disconnected along the cutting place, the workbench 1 in the present invention is also provided with two horizontally placed breaking cylinders 64, the two breaking cylinders 64 are located on both sides of the rotating shaft 51, and the flaring clamping die mechanism 62 is installed on the On the push rod of the above-mentioned pulling-off cylinder 64, that is, after cutting the pipe, the pulling-off cylinder 64 can push forward the flaring clamping die mechanism 62 to move forward for a short distance, because the flaring clamping die mechanism 62 is now clamping pipe, so the part to be bent that moves forward is separated from the subsequent pipe from the cut. the

At the same time when the bent piece is pulled off, the controller on the workbench 1 controls the cam 44 on the sliding frame 41 to press the to-be-bent against the side of the pipe bending mold 42 under the drive of the cam cylinder 49, and the flared clamping mold Mechanism 62 unclamps the tube and returns to its original position. Then the controller controls the sliding frame 41 to get back to the original position, and now the positioning part 45 moves forward under the cylinder drive and pushes against the tail end of the part to be bent, preventing the part to be bent from swinging in the bend and affecting the quality of the bend. the

Subsequently, the clamping cylinder 48 drives the clamping mold 43 to move upward, and the servo motor 47 drives the pipe bending mold 42 and the clamping mold 43 to rotate around the rotating shaft 46 to bend the pipe. During the pipe bending process, the positioning member 45 can drive the pipe to rotate, thereby bending out Three-dimensional elbow fittings. the

Finally, the manipulator on the workbench 1 clamps and sends the bent pipe into the container next to the machine tool. the

Claims (6)

1. An integrated pipe bending machine, which includes a workbench (1), on which a pipe fitting straightening mechanism (2), a pipe fitting feeding structure (3) and a pipe bending forming mechanism (4) are sequentially installed. It is characterized in that a material cutting device and a pipe head flaring device are also provided between the pipe fitting feeding structure (3) and the elbow forming mechanism (4), and the material cutting device includes a hollow rotating shaft (51) through which the pipe fittings pass. , the cutting knife (52) that is installed on the rotating shaft (51) and the control mechanism (53) that controls the opening and closing of the cutting knife head; The pipe head flaring device includes a translatable flaring punch (61), flaring The clamping die mechanism (62) and the drive mechanism (63) that drives the flaring punch (61) to move, the described flaring punch (61) can lean against the above-mentioned flared clamping die mechanism (62) side, The driving mechanism (63) includes a first air cylinder (630) that drives the flaring punch (61) to move axially perpendicular to the rotation axis (51) and drives the flaring punch (61) to rotate parallel to The flaring oil cylinder (631) that the shaft (51) moves axially; the first cylinder (630) is fixedly installed on the workbench (1), and the push rod of the first cylinder (630) is equipped with a shaft that can be perpendicular to the rotation axis ( 51) Axial movable frame (632), the flared oil cylinder (631) is fixedly installed on the movable frame (632). 2. The integrated pipe bending machine according to claim 1, characterized in that the flare clamping die mechanism (62) includes a movable upper flare die (621), a fixed lower flare die (622) and a cylinder , the upper flaring die (621) is fixedly connected on the movable rod of the cylinder, and the upper and lower flaring dies (621, 622) are located on one side of the outer end of the rotating shaft (51). 3. The integrated pipe bending machine according to claim 2, characterized in that the workbench (1) is also provided with a breaking cylinder (64), and the expansion clamping die mechanism (62) is installed on the above-mentioned drawing On the piston push rod of broken cylinder (64). 4. The integrated pipe bending machine according to claim 1, characterized in that the control mechanism (53) includes a positioning plate (531) fixed on the outer end of the rotating shaft (51), used to prevent the cutting knife (52) from The slipped pressing plate (530), the positioning disc (531) and the pressing plate (530) are fixedly connected, and the cutting knife (52) is axially limited between the positioning disc (531) and the pressing plate (530). 5. The integrated pipe bending machine according to claim 4, characterized in that the positioning plate (531) is provided with a plurality of chutes (5310), and the pressing plate (530) is correspondingly provided with a plurality of cutting knives ( 52) There are multiple strip holes (5300) passing through, the cutting knives (52) are multiple, and the tails of each cutting knives (52) are correspondingly installed in the above-mentioned respective chute (5310) and can slide along the chute. 6. The integrated pipe bending machine according to claim 5, characterized in that the control mechanism (53) also includes a bushing (532) set outside the rotating shaft (51) and a drive bushing (532) along the The axially moving cylinder (533), the springs that can push the cutting knife (52) outwards are also respectively arranged in the chute (5310), and each cutting knife (52) is respectively provided with a pressure block (520) with a bevel. ), the pressing block (520) can lean against the periphery of the outer end of the above-mentioned axle sleeve (532).

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