CN204503869U - bending machine - Google Patents

Abstract

The utility model relates to a bending machine, it includes the frame, locate in the frame can be to the work piece first mechanism of bending and locate the servo mechanism that can bear the weight of the work piece in the frame, still include one locate in the frame can be to the second mechanism of bending of work piece, this servo mechanism is located first mechanism of bending and the second mechanism of bending between bending. Compared with the prior art, the utility model have following advantage: the utility model discloses a first mechanism and the second of bending is bent the anterior segment and the back end of work piece respectively to the mechanism of bending, and the reducible number of times of in-process relocation work piece of bending conveniently realizes U type or G type shaping, and quick shaping, improves production efficiency.

Description

bending machine

technical field

The utility model relates to a bending machine.

Background technique

As a compact heat exchanger, the tube-fin heat exchanger has a wide range of applications in the refrigeration industry. The forming process of the heat exchanger mainly includes the following three forming processes: tube bending forming (forming U-shaped tubes), mechanical expanding tube forming (realizing tube-fin connection), tube bundle bending forming (forming L-shaped or U-shaped or G-shaped Heat Exchanger). Tube bundle bending is one of the key processes in heat exchanger forming, which has an important impact on the performance of heat exchangers.

When the tube bundle is bent and formed, the heat exchanger is first transported to the specified position, so that the part to be bent is close to the bending die (roller) with a predetermined bending radius, and then clamped on both sides of the bending die The heat exchanger makes the clamping parts on one side or both sides rotate and move around the bending die, so the heat exchanger is extruded into a specified bending angle along the bending die. More specifically, the heat exchanger is fed into the bending machine longitudinally in a flat state, and then the part to be bent is placed against the bending die in the transverse direction, the bending die is placed above the part to be bent, and the front end of the heat exchanger is clamped Between the bending die and the clamping die (lower platen), while the tail end is supported by the bottom plate (follower plate), the actuator is driven to rotate the bending die and the clamping die at a specified angle as required, and the clamping die is lifted to make The front section of the heat exchanger rotates around the center of the bending die to form along the bending die.

The structure of the existing bending machine is complex. Because the whole machine is bent by a single rotary rod, to realize U-shaped or G-shaped bending, the workpiece needs to be repositioned many times before bending. The process is complicated, the continuity is poor, and the production efficiency is low.

Contents of the invention

The purpose of the utility model is to provide a bending machine with simple structure, rapid prototyping and high production efficiency.

The above-mentioned purpose is achieved through the following technical solutions:

A bending machine, comprising a frame, a first bending mechanism which is arranged on the frame and can bend a workpiece, and a follower mechanism which is arranged on the frame and can carry the workpiece, and also includes a device which is arranged on the frame The second bending mechanism for bending the workpiece, the follow-up mechanism is located between the first bending mechanism and the second bending mechanism.

Compared with the prior art, the utility model has the following advantages: the utility model adopts the first bending mechanism and the second bending mechanism to respectively bend the front section and the rear section of the workpiece, which can reduce the time for repositioning the workpiece during the bending process. times, it is convenient to realize U-shaped or G-shaped forming, and rapid prototyping improves production efficiency.

Description of drawings

Fig. 1 shows the three-dimensional schematic view of the utility model;

Fig. 2 has shown the top view of the utility model;

Fig. 3 shows the A-A sectional view of Fig. 2;

Fig. 4 shows the three-dimensional schematic diagram of the frame of the present utility model;

Fig. 5 and Fig. 6 show the three-dimensional schematic diagrams of two different angles of the first bending mechanism of the present utility model;

Fig. 7 shows a three-dimensional exploded schematic view of the first bending mechanism of the present invention;

Fig. 8 to Fig. 11 show the schematic cross-sectional structural diagrams of the first bending mechanism of the present invention;

Figure 12 and Figure 13 show the three-dimensional exploded schematic diagrams of the follower plate and the follower plate swing bracket of the utility model at two different angles;

Fig. 14 to Fig. 16 show the sliding schematic diagrams of the follower plate of the first bending mechanism of the present invention;

Fig. 17 shows a three-dimensional exploded schematic view of the first rotating roller and the first lower pressing plate of the present invention;

Fig. 18 shows a schematic perspective view of the lock plate mechanism of the present invention;

Fig. 19 shows a three-dimensional exploded schematic view of the lock plate mechanism of the present invention;

Figure 20a and Figure 20b show a schematic cross-sectional structure of the lock plate mechanism of the present invention, wherein Figure 20a shows that the lock plate slider exits the through hole, and Figure 20b shows the lock plate slider enters the through hole;

Figure 20c shows a schematic diagram of the implementation of the lock plate mechanism of the present invention;

Figure 21 and Figure 22 show three-dimensional schematic views of the second bending mechanism of the present invention at two different angles;

Fig. 23 shows a three-dimensional exploded schematic view of the second bending mechanism of the present invention;

Fig. 24 shows a schematic diagram of the second lower pressing plate of the second bending mechanism of the present invention in the position of releasing the workpiece;

Fig. 25 shows a schematic diagram of the second lower pressing plate of the second bending mechanism of the present invention in the position of clamping the workpiece;

Fig. 26 and Fig. 27 show three-dimensional schematic diagrams of two different angles of the follow-up mechanism of the present invention;

Figure 28 and Figure 29 show three-dimensional exploded schematic diagrams of the follow-up mechanism of the present invention at two different angles;

Fig. 30 shows a schematic cross-sectional structural view of the follow-up mechanism of the present invention;

Fig. 31 shows a schematic diagram of the separation state of the clutch device of the follow-up mechanism of the present invention;

Fig. 32 shows a schematic diagram of the clutch device of the follow-up mechanism of the present invention in an engaged state;

Fig. 33a to Fig. 33k show the schematic diagrams of the working principle of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

As shown in Figures 1 to 4, a bending machine includes a frame 1, a first bending mechanism 2 mounted on the frame 1 that can bend the rear section of the workpiece, and a load-carrying mechanism 2 mounted on the frame The follow-up mechanism 3 of the workpiece also includes a second bending mechanism 4 that is arranged on the frame 1 and can bend the front section of the workpiece. The follow-up mechanism 3 is located between the first bending mechanism 2 and the second bending mechanism 4 between. When the workpiece is fed into the bending machine, the workpiece is fed along the transverse direction and enters the first bending mechanism 2, the follower mechanism 3 and the second bending mechanism 4 in sequence, and the workpiece can be sent into the bending machine through the automatic feeding equipment.

As shown in Figure 5 to Figure 20c, the first bending mechanism 2 is a new type of bending mechanism, including the first rotating roller 21 pivotally mounted on the frame 1 in the longitudinal direction, and the first rotating roller 21 arranged on the frame 1 and the first rotating roller 21. The first rotary roller drive mechanism 211 that can drive the first rotary roller 21 to rotate, the first upper platen 22 and the first lower platen swing bracket 23 that are installed on the first rotary roller 21 and rotate together with the first rotary roller 21 , the first lower pressing plate 24 slidably installed on the first lower pressing plate swing bracket 23, the first lower pressing plate guide mechanism and the first lower pressing plate located between the first lower pressing plate swinging bracket 23 and the first lower pressing plate 24 Pressing plate driving mechanism, the follower plate 25 that can carry workpieces, the first lower pressing plate 24 is arranged in parallel with the first upper pressing plate 22 and the first lower pressing plate driving mechanism drives the first lower pressing plate 24 to slide along the first lower pressing plate guiding mechanism to make the first lower pressing plate The lower pressing plate 24 is close to or away from the first upper pressing plate 22 to clamp or loosen the workpiece. An inner shaft 26 is also pivotally mounted on the frame 1, and an inner shaft 26 that can be driven is arranged between the frame 1 and the inner shaft 26. Rotating inner shaft drive mechanism, the inner shaft 26 is equipped with a follower plate swing bracket that rotates with the inner shaft, the follower plate 25 is installed on the follower plate swing bracket and follows the follower plate swing support to rotate around the inner shaft 26 When the follower plate 25 rotates, it can drive the workpiece clamped between the first upper pressing plate 22 and the first lower pressing plate 24 to bend around the first rotating roller 21 . The workpiece carried on the follower plate 25 can be bent when the follower plate 25 rotates with the follower plate swing bracket. The new bending mechanism disclosed by the utility model has a simple structure and can realize secondary bending, especially for the secondary bending of the rear section of the workpiece, which is convenient for bending the workpiece into a G shape or a U shape. The new bending mechanism disclosed by the utility model The bending mechanism and the second bending mechanism work together to realize the bending of the workpiece into a G shape or a U shape.

The workpiece is bent when the follower plate is rotated, and the angle between the follower plate and the first lower pressing plate can be 0 to 360° to realize bending at different angles.

The first rotating roller 21 is set outside the inner shaft 26, the axis of the first rotating roller 21 is collinear with the axis of the inner shaft 26, and its design is reasonable, saving the layout space of the whole machine;

Moreover, the first rotating roller 21 driven by the first rotating roller driving mechanism 211 and the inner shaft 26 driven by the inner shaft driving mechanism rotate independently of each other. The first rotary roller drive mechanism 211 includes the first rotary roller drive servo motor, the first rotary roller drive reducer and the first rotary roller drive chain sprocket transmission mechanism, the first rotary roller drive servo motor and the first rotary roller drive reducer Installed on the frame 1, the output shaft of the first rotary roller drive servo motor is connected with the input shaft of the first rotary roller drive reducer, and the output shaft of the first rotary roller drive reducer and the first rotary roller 21 pass through the first rotation The stick drive chain sprocket transmission mechanism is connected, and the first turning stick drive servo motor drives the first turning stick 21 to rotate through the first turning stick driving reducer. The inner shaft drive mechanism includes an inner shaft drive servo motor 261 and an inner shaft drive reducer 262. The inner shaft drive servo motor 261 and the inner shaft drive reducer 262 are installed on the frame 1, and the inner shaft drive servo motor 261 is driven by the inner shaft. The device 262 drives the inner shaft 26 to rotate. Two ends of the inner shaft 26 are respectively pivotally mounted on the frame 1 through an inner shaft bearing seat 263 . The first rotating roller 21 is set outside the inner shaft 26, one end of the first rotating roller 21 is pivotally mounted on the frame 1 through a first rotating roller bearing seat 213, and the other end of the first rotating roller 21 is passed through the first rotating roller bearing 214 is sleeved on the outside of the inner shaft 26. In addition, the first rotating roller driving mechanism 211 can lock the first rotating roller 21 at any position on the rotation circle of the first rolling roller, and the inner shaft driving mechanism can also lock the inner shaft 26 at any position on the inner shaft rotation circle so that Realize the controllability of bending.

The follower plate swing support includes a follower plate lifting frame 27 and a follower plate supporting outer frame, the follower plate support outer frame is installed on the inner shaft 26, and the follower plate 25 is slidably installed on the follower plate lifting frame 27, specifically, the bottom of the follow-up plate 25 is provided with a follow-up slide guide rail 253, and the follow-up plate lifting frame 27 is provided with a follow-up slide slide 252, and the follow-up slide slide 252 is slidably nested On the follow-up sliding guide rail, the follow-up plate guide mechanism includes a follow-up slide guide rail 253 and a follow-up slide slide block 252 . The guide mechanism of the follower plate lifter and the driving mechanism of the follower plate lifter are arranged between the follower plate lifter 27 and the follower plate support outer frame, and the drive mechanism of the follower plate lifter drives the follower plate lifter 27 And the follower plate 25 rises or falls along the guide mechanism of the follower plate lifting frame so that the follower plate 25 approaches or moves away from the inner shaft 26;

Between the follower plate 25 and the follower plate elevating frame 27, a follower plate guiding mechanism, a follower plate limit mechanism and a pushing mechanism for driving the follower plate to reset are provided;

Follow-up plate 25 is subject to the guidance of follow-up plate guide mechanism and slides on a follow-up direction that can be dragged and slipped by a workpiece carried by follow-up plate and a reset direction opposite to follow-up direction; When the first lower pressing plate 24 is flat, the following plate 25 is close to the first lower pressing plate 24 when following along the moving direction; the following plate can be driven by the workpiece carried by the following plate to slide along the following direction, or the following plate can The meshing transmission of the rack and the follower plate gear slides along the follow-up direction and so on.

Propelling mechanism comprises rodless cylinder 28, and the cylinder body of this rodless cylinder 28 is installed on the follow-up plate 25, and this follow-up plate elevating frame 27 is provided with the mobile body 281 that can stop rodless cylinder to slide along the follow-up direction. Reset block 271, when the moving body 281 of the rodless cylinder slides along the follow-up direction and touches with the reset block 271, the reset block 271 blocks the moving body 281 of the rodless cylinder from sliding along the follow-up direction, and at this time , the follower plate will slide relative to the follower plate lifting frame 27 along the reset direction;

The follower plate limit mechanism includes a limit upper stopper 251 installed on the follower plate 25 and a limit lower stopper 272 installed on the follower plate lifting frame 27, and the follower plate 25 slides along the reset direction And when the limit upper block 251 touches the limit lower block 272, it stops, that is, the end point of the follower plate 25 sliding along the reset direction is the position where the limit upper block 251 and the limit lower block 272 touch;

Fig. 14 to Fig. 16 have shown the sliding schematic diagram of follower plate, mainly have shown follower plate 25, rodless cylinder 28, reset stopper 271, limit lower stopper 272 and limit upper stopper 251 and look up picture. As shown in Figure 14, the moving body 281 of the rodless cylinder is far away from the limit upper block 251, and the limit upper block 251 touches the limit lower block 272 (that is, the limit upper block 251 and the distance between the lower stopper 272 of the limit is zero), and when the upper stopper 251 of the limit is touched with the lower stopper 272 of the limit, the follower plate is in the reset position. At this moment, the follower plate 25 can only Slide along the direction indicated by the arrow in Figure 14 (i.e. the follow-up direction); Figure 15 shows a schematic diagram after the follow-up plate 25 of Figure 14 is slid for a certain distance along the follow-up direction, wherein the reset stopper 271 is not in contact with no The moving body 281 of the rod cylinder touches, and the limit upper block 251 is at a distance from the limit lower block 272; Fig. 16 shows that the follower plate 25 of Fig. 15 continues to slide along the follow direction and reset Stopper 271 touches with the moving body 281 of the rodless cylinder, and the distance between the upper limiter 251 and the lower limiter 272 is the maximum value. When the upper limiter 251 and the lower limiter are set When the distance between 272 and 272 is the maximum value, the follower plate is in the maximum follow-up displacement position. At this time, the follower plate 25 can only slide along the direction indicated by the arrow in Figure 16 (i.e. the reset direction); when the follower plate is in the maximum follow-up position During the displacement position (referring to Fig. 16), the moving body 281 of the rodless cylinder is driven to slide along the follow-up direction, and since the reset block 271 touches the moving body 281 of the rodless cylinder, the follower plate will slide along the reset direction until The limit upper block 251 touches the limit lower block 272, and at this moment, the follower plate is in the reset position (see FIG. 14).

The follower plate support outer frame includes two follower plate swing arms 290 arranged at intervals and a follower plate bottom beam frame 29 connected between the two follower plate swing arms;

The driving mechanism of this follower plate lifter is located between the follower plate bottom beam frame 29 and the follower plate lifter 27, and the drive mechanism of the follower plate lifter includes two follower plate turbine screw lifters 291 and a The two follower plate turbine screw lifters 291 and the follower plate lift motor 292 are all installed on the follower plate bottom beam frame 29 to drive the follower plate lifting motor 292 that operates synchronously with the two follower plate turbine screw lifters 291 And two follower plate turbine screw lifts 291 are respectively installed on the two ends of follower plate bottom beam frame 29, between this follower plate lifting motor 292 and the two follower plate turbine screw lifters 291, two A follower plate transmission mechanism for synchronous action of a turbine screw lifter 291;

The follower plate transmission mechanism includes a follower plate lifting drive shaft 293 connected to two follower plate turbine screw lifters 291 to transmit power, and the output shaft of the follower plate lift motor 292 is connected to one of the follower plate turbine screw shafts. The worm screw connection of the input power of the lifter 291, the liftable screw rods of the two follower plate turbine screw lifters 291 are pushed against the bottom of the follower plate 25;

The guide mechanism of the follower plate lifting frame is located between the follower plate lift frame 27 and the two follower plate swing arms 290. Moving plate elevating guide rail 273 and the following plate elevating slide block 274 that is located at the two ends of the following plate elevating frame 27 and cooperates with the following plate elevating guide rail 273;

This follower plate 25 is fixedly provided with follower plate rack 201, and this first rotating roller 21 is fixedly provided with follower plate gear 202 that cooperates with follower plate rack 201, and the axis of follower plate gear 202 and the first The axes of a rotating roller 21 are collinear, the length direction of the follower plate rack 201 is parallel to the sliding direction of the follower plate 25, and the follower plate gear 202 can be a sector gear;

The driving mechanism of the follower plate lifting frame drives the follower plate 25 to rise or fall between a bending position close to the inner shaft 26 and a follower position away from the inner shaft 26;

When the follower plate 26 is in the bent position, the follower plate rack 201 and the follower plate gear 202 are always engaged to avoid the follower plate from being free along the follow-up direction due to the effect of its own gravity when the follower plate rotates around the inner shaft. Sliding phenomenon, avoiding wear and tear on the workpiece, and ensuring the quality of bending; during the rotation of the follower plate 25 around the inner shaft 26, the follower plate rack 201 is in the shape of climbing the follower plate gear 202;

When the follower plate 25 is in the follow-up position, the follower plate rack 201 is separated from the follower plate gear 202;

There are two follower plate racks 201 and two follower plate gears 202 respectively, one follower plate tooth rack cooperates with a follower plate gear, and the two follower plate racks are respectively fixed on both sides of the follower plate.

The first lower pressing plate 24 has an inner end 241 and an outer end 242 opposite to the inner end, and the first lower pressing plate guiding mechanism and the first lower pressing plate driving mechanism are arranged on the inner end 241 of the first lower pressing plate Between the pressing plate swing brackets 23, between the outer end 242 of the first lower pressing plate and the first upper pressing plate 22, a lock plate mechanism that can allow or prevent the outer end 242 of the first lower pressing plate away from the first upper pressing plate 22 is provided. The first lower pressing plate drive mechanism is located at the inner end of the first lower pressing plate, the first lower pressing plate is a cantilever beam structure, and a locking plate mechanism is set at the outer end of the first lower pressing plate so that the outer end of the first upper pressing plate can be positioned, ensuring The first lower pressing plate and the first upper pressing plate can stably clamp the workpiece.

This locking plate mechanism comprises the cylinder 203 under the locking plate that is located on the first lower pressing plate 24 and the locking bar mechanism that is located at the piston rod of the locking plate lower cylinder 203 on the first upper pressing plate 22, the cylinder 203 under the locking plate The cylinder body is fixed on the outer end 242 of the first lower pressing plate, and the piston rod of the lower cylinder 203 of the locking plate moves toward the first upper pressing plate 22;

After the piston rod of the lower cylinder 203 of the lock plate is stretched out, the lock rod mechanism can lock or unlock the piston rod of the lower cylinder 203 of the lock plate to prevent or allow the retraction of the piston rod of the lower cylinder 203 of the lock plate. The piston rod of the cylinder under the locking plate is locked by the locking rod mechanism to locate the outer end of the first lower pressing plate, the structure is simple, and the operation and control are convenient.

The outer end of the piston rod of the lower cylinder 203 of the lock plate is provided with a stopper 204;

This lock bar mechanism comprises cylinder 205 on the lock plate, lock plate slide seat 206 and lock plate slide block 207, and the cylinder body of cylinder 205 on the lock plate and lock plate slide seat 206 are respectively fixed on the first upper pressing plate 22, and the lock plate slides Seat 206 is provided with the through hole 2061 that can enter or withdraw from the stopper 204, and the lock plate slide block 207 is slidably installed in the lock plate slide seat 206, and the piston rod of the cylinder 205 on the lock plate and the lock plate slide block 207 Connected, the cylinder 205 on the lock plate drives the lock plate slider 207 to enter or exit the through hole 2061 along the radial direction of the through hole 2061;

When the lock plate slider 207 enters the through hole 2061, the through hole 2061 is blocked by the lock plate slider 207, and the lock plate slider 207 prevents the stopper 204 from entering or exiting the through hole 2061;

The through hole 2061 that the stopper 204 can enter or exit when the lock plate slider 207 exits the through hole is limited. The locking rod mechanism has a simple structure and is convenient to implement.

The lock plate slider 207 is provided with a lock plate channel 2071 passing through the lock plate slider along the axial direction of the through hole 2061 and a lock plate side notch 2072 communicating with the lock plate channel.

The lock plate channel 2071 is U-shaped or C-shaped.

As shown in Figure 20a, the cylinder 205 on the lock plate drives the lock plate slider 207 to enter the through hole 2061 along the radial direction of the through hole 2061. At this time, the through hole 2061 is blocked by the lock plate slider 207, and the stopper 204 is blocked by the lock plate. The through hole 2061 that is blocked by the slider 207 and cannot enter or exit;

As shown in Fig. 20b, the cylinder 205 on the locking plate drives the sliding block 207 of the locking plate to exit the through hole 2061 along the radial direction of the through hole 2061. At this time, the through hole 2061 is fully exposed, and the stopper can enter or exit the through hole.

Fig. 20c shows the implementation schematic diagram of the lock plate mechanism of the present utility model, the first lower pressing plate is in the position of clamping the workpiece, the piston rod of the cylinder under the lock plate is in the extended state, and the lock plate slider 207 has entered the through hole 2061, limiting The stopper 204 is blocked by the lock plate slider 207 and cannot exit the through hole.

After the piston rod of the cylinder under the lock plate stretches out, the stopper enters the through hole. At this time, the cylinder on the lock plate drives the slider of the lock plate to slide to make the slider of the lock plate enter the through hole, and the piston rod of the cylinder 203 under the lock plate Passing through the lock plate channel, the stopper is blocked on the lock plate slider and cannot withdraw from the through hole, that is, the limit stopper is prevented from exiting the through hole. After that, when the cylinder on the lock plate drives the lock plate slider to exit the through hole, the limit stop The stopper can exit or enter the through hole;

The diameter of the through hole>the outer diameter of the stopper>the diameter of the lock plate channel>the diameter of the piston rod;

The first lower pressing plate driving mechanism comprises a first lower pressing plate driving cylinder 208, the cylinder body of the first lower pressing plate driving cylinder is fixed on the bottom of the first lower pressing plate 24, and the outer end of the piston rod of the first lower pressing plate driving cylinder Fixed connection with the first lower platen swing bracket 23;

The first lower platen guide mechanism includes a first lower platen guide rail 231 mounted on the first lower platen swing bracket 23 and a first lower platen guide rail 231 mounted on the inner end 241 of the first lower platen and slidingly fitted with the first lower platen guide rail. The first lower platen guide slider 243.

In this embodiment, the driving mechanism of the first lower pressing plate drives the first lower pressing plate 24 along the guiding mechanism of the first lower pressing plate in a position away from the first upper pressing plate 22 for releasing the workpiece and a position close to the first upper pressing plate 22 for clamping the workpiece. rise or fall between.

As shown in Figure 8, the follower plate is in the follow-up position, the first lower pressure plate is in the position of releasing the workpiece, the follower plate is flat with the first lower pressure plate, and the follower plate rack and the follower plate gear are separated from each other;

As shown in Figure 9, the follower plate is at the bending position, the first lower pressing plate is at the position of clamping the workpiece, the follower plate is flat with the first lower pressing plate, and the follower plate rack and the follower plate gear mesh with each other;

Fig. 10 shows a schematic diagram of turning the swing bracket of the follower plate in Fig. 9 clockwise through 90°. During the process of passing 90°, the rack of the follower plate keeps meshing with the gear of the follower plate;

Figure 11 shows that the follow-up plate shown in Figure 10 is first returned to the follow-up position and the reset position, and then the first lower pressing plate shown in Figure 10 is returned to the position for releasing the workpiece, and then the first lower pressing plate is swung Support 23 rotates 90 ° in the clockwise direction, and now the follower plate and the first lower pressing plate are flat in the vertical position (as shown in Figure 33g), after this, the follower plate is driven to the bending position and the first lower press plate The pressing plate is at the position of clamping the workpiece, allowing the swinging support of the follower plate to turn clockwise through 90° again.

As shown in Figures 21 to 25, a sliding guide mechanism of the second bending mechanism and a sliding driving mechanism of the second bending mechanism are arranged between the frame 1 and the second bending mechanism 4, and the second bending mechanism The sliding driving mechanism of the mechanism drives the second bending mechanism to slide laterally along the sliding guide mechanism of the second bending mechanism, and the second bending mechanism 4 approaches or moves away from the first bending mechanism 2 when sliding laterally. The second bending mechanism disclosed in the utility model can move close to or away from the first bending mechanism to adjust the bending specifications of the workpiece (such as the size after bending, the position of the bending angle, etc.).

This second bending mechanism comprises the sliding frame of the second bending mechanism, the second rotating roller 41 that is longitudinally pivotally mounted on the sliding frame of the second bending mechanism, the sliding frame and the second bending mechanism located at the second bending mechanism. The second rotating roller drive mechanism that can drive the second rotating roller 41 to rotate between the rotating rollers 41, the second upper pressing plate 42 and the second lower pressing plate that are installed on the second rotating roller 41 and rotate together with the second rotating roller 41 swing The bracket 43, the second lower pressing plate 44 slidably mounted on the second lower pressing plate swing bracket 43, the second lower pressing plate guide mechanism and the second lower pressing plate located between the second lower pressing plate swinging bracket 43 and the second lower pressing plate 44. Two lower pressing plate driving mechanisms, the second lower pressing plate 44 is arranged in parallel with the second upper pressing plate 42 and the second lower pressing plate driving mechanism drives the second lower pressing plate 44 to slide along the second lower pressing plate guiding mechanism to make the second lower pressing plate 44 approach or move away from The second upper platen 42 is used to clamp or loosen the workpiece. The first rotating roller 21 and the second rotating roller 42 are arranged in parallel.

The sliding frame of this second bending mechanism comprises a sliding seat 45 of a second bending mechanism and a sliding plate 46 of a second bending mechanism, and the second rotating rod 41 is pivotally mounted on the sliding seat 45 and the second bending mechanism. Between the sliding plates 46 of the second bending mechanism;

The sliding guide mechanism of the second bending mechanism includes a sliding plate guide rail 461 that is installed on the frame 1 and extends laterally. The slide plate slider 462 of the frame 1, the slide seat guide rail 451 extending laterally installed on the frame 1, the slide seat slide block installed on the slide seat 45 of the second bending mechanism and slidingly matched with the slide seat guide rail 451 452;

The sliding driving mechanism of this second bending mechanism comprises the sliding driving screw 453 of the second bending mechanism extending laterally on the frame 1, and the sliding seat 45 bottom mounted on the second bending mechanism. The sliding drive nut 454 of the second bending mechanism and the sliding driving motor 455 of the second bending mechanism installed on the frame 1, the output shaft of the sliding driving motor 455 of the second bending mechanism is connected with the second bending mechanism. The sliding driving screw 453 of the mechanism is connected to drive the sliding driving screw 453 of the second bending mechanism to rotate, and the sliding driving screw 453 of the second bending mechanism passes through the sliding driving nut of the second bending mechanism 454 to form a screw nut pair;

The second rotating roller driving mechanism includes a second rotating roller driving servo motor 456 installed on the sliding seat 45 of the second bending mechanism, and the second rotating roller driving servo motor 456 is connected with the second rotating roller 41 to drive the second rotating roller 41 spins.

This second lower pressing plate driving mechanism comprises a second lower pressing plate driving cylinder 441, the cylinder body of this second lower pressing plate driving cylinder 441 is fixedly arranged on the bottom of the second lower pressing plate 44, and the piston rod of the second lower pressing plate driving cylinder 441 The outer end is fixedly connected with the second lower platen swing bracket 43;

The second lower platen guide mechanism includes a second lower platen guide rail 442 mounted on the second lower platen swing bracket 43 and a second lower platen guide rail 442 mounted on the inner end of the second lower platen 44 and sliding with the second lower platen guide rail 442 . The matched second lower pressing plate guides the slide block 443 .

The outer end of the second lower pressing plate has the same locking plate mechanism as the outer end of the first lower pressing plate (not described in detail here).

In this embodiment, the second lower pressing plate drive mechanism drives the second lower pressing plate 44 along the second lower pressing plate guide mechanism to a position away from the second upper pressing plate 42 for releasing the workpiece and a position close to the second upper pressing plate 42 for clamping the workpiece. rise or fall between.

As shown in Figure 26 to Figure 32, the follow-up mechanism is a pinch follow-up mechanism, including a pinch bracket, a pinch bracket slide guide mechanism, a pinch bracket slide drive mechanism, a clutch device, and a pinch feed mechanism that can carry workpieces. The follower plate 31, the pinch follower plate 31 is installed on the pinch bracket, in this embodiment, the pinch follower plate 31 is fixedly installed on the pinch bracket and slides together with the pinch bracket, the pinch The bracket sliding guiding mechanism and the pinching bracket sliding driving mechanism are arranged between the frame 1 and the pinching bracket, and the clutch device is arranged between the pinching bracket sliding driving mechanism and the pinching bracket to selectively enable the pinching The bracket sliding drive mechanism separates or engages with the pinch bracket to cut off or transmit the power input from the pinch bracket sliding drive mechanism to the pinch bracket, and the pinch bracket is dragged by the workpiece carried by the pinch follower plate 31 when the clutch device is separated. Move and follow along the lateral direction of the pinch bracket sliding guide mechanism, and the pinch bracket sliding drive mechanism drives the pinch bracket and the pinch follower plate 31 to slide laterally along the pinch bracket slide guide mechanism or move the pinch bracket when the clutch device is engaged. The pinch bracket and the pinch follower plate 31 are locked at the set position;

A clamping plate 32 is also installed on the clamping bracket, the clamping plate 32 is located above the pinching follower plate 31, and a clamping plate 32 is provided between the clamping plate 32 and the pinching bracket to drive the clamping plate 32 close to or away from the pinching. The follower plate is used to clamp or loosen the clamping plate lifting drive mechanism of the workpiece. The clamping follow-up mechanism disclosed by the utility model can carry the workpiece and follow it during the bending process of the workpiece on the one hand, and can actively clamp the workpiece on the other hand to carry out different positions of the workpiece before or after bending. Adjustment brings convenience to bending work.

The pinch support includes a pinch vertical plate 33 and a pinch base frame 34, and a pinch follower plate 31 and a clamping plate 32 are installed on the pinch base frame 34, between the pinch vertical plate 33 and the pinch base frame 34. It is provided with a pinch pedestal lifting guide mechanism and a pinch pedestal lifting drive mechanism, and the pinch pedestal lifting drive mechanism drives the pinch pedestal 34 to rise or fall along the pinch pedestal lifting guide mechanism; The follow-up mechanism can not only adjust the lateral position of the workpiece by pinching the sliding drive mechanism of the bracket, but also adjust the vertical position of the workpiece by pinching the lifting and lowering drive mechanism of the pedestal.

The pinch vertical plate 33 is provided with two groups of workpiece output mechanisms 35 that can longitudinally output the workpieces carried on the pinch follower plate. The two groups of workpiece output mechanisms 35 are separated by the pinch base frame 34, and each group of workpiece output Mechanism 35 comprises conveying support 351, conveyer belt assembly 352, conveying support lifting guide mechanism and conveying support lifting driving mechanism, this conveying belt assembly 352 is installed on the conveying support 351, this conveying support lifting guiding mechanism and conveying support lifting driving mechanism are located at Between the conveying support 351 and the pinch vertical plate 33, the conveying support elevating drive mechanism drives the conveying support 351 to rise or descend along the conveying support elevating guide mechanism; The workpiece on 31 is moved out of the side opening 341 of the pinch base frame longitudinally, and the two sets of workpiece output mechanisms 35 can drive the workpiece carried on the pinch follower plate 31 to be transported longitudinally and pass through the side opening 341 of the pinch base frame. The pinch base frame 34 is removed. The upper and lower positions of the conveyor belt assembly 352 are adjusted by the lifting and lowering drive mechanism of the conveying bracket, so that the two sets of workpiece output mechanisms can make the upper layer (ie, the load layer) of the conveyor belt assembly 352 equal to or higher than the pinch conveyor belt when outputting the bent workpieces. The moving plate 31 is used to output the bent workpiece. When the workpiece does not need to be output (for example, during the workpiece bending process), the conveyor belt assembly 352 can be lowered. Two sets of workpiece output mechanisms are provided to facilitate the output of the bent workpiece.

This pinch base frame lifting guide mechanism comprises the pinch base frame lifting guide rail 342 that is installed on the pinch vertical plate 33 and extends vertically (that is, up and down) and is installed on the pinch base frame 34 and lifts with the pinch base frame. The guide rail 342 slides and fits the pinch base frame lifting slider 343;

This pinch pedestal lifting drive mechanism comprises pinch pedestal lifting drive screw 344, pinch pedestal lifting drive nut 345 and pinch pedestal lifting drive motor 346, and pinch pedestal lifting driving screw 344 is pivotally mounted on the clip. On the vertical plate 33, the lifting drive motor 346 for pinching the base frame is installed on the vertical plate 33 for pinching the base frame. The screw mandrel 344 rotates, and the pinch pedestal lifting drive nut 345 is installed on the pinch pedestal 34, and the pinch pedestal lifting drive screw 344 passes through the pinch pedestal lifting drive nut 345 to form a screw nut pair;

The lifting and guiding mechanism of the conveying support includes a vertically extending conveying support lifting guide rail 353 installed on the pinch vertical plate 33 and a transporting support lifting slider 354 mounted on the conveying support 351 and slidingly matched with the conveying support lifting guide rail 353 ;

This conveying support lifting drive mechanism comprises conveying support lifting drive screw 355, conveying support lifting drive nut 356 and conveying support lifting drive motor 357, and conveying support lifting driving screw 355 is pivotally mounted on the pinch vertical plate 33, and the conveying support lifts The driving screw 355 is parallel to the lifting driving screw 344 of the pinch pedestal, the lifting drive motor 357 of the conveying support is installed on the pinch vertical plate 33, the lifting driving motor 357 of the conveying support is connected with the lifting driving screw 355 of the conveying support to drive the conveying support The lifting drive screw 355 rotates, the lifting drive nut 356 of the delivery bracket is installed on the delivery bracket 351, the lifting drive screw 355 of the delivery bracket passes through the lifting drive nut 356 of the delivery bracket to form a screw nut pair;

The pinch base frame 34 is provided with a pinch cantilever beam 347 extending longitudinally. The length direction of the clamping plate 32 is parallel to the length direction of the pinch cantilever beam 347. The length direction of 347 is arranged at intervals in the clamping plate lifting drive cylinder 348, the cylinder body of each clamping plate lifting drive cylinder 348 is installed on the pinch cantilever beam 347, and the piston rod of each clamping plate lifting drive cylinder 348 is connected to the clamping plate. Plate 32; three clamping plate lifting drive cylinders 348 are shown in the accompanying drawings, in fact, the number of clamping plate lifting drive cylinders can be more or less than the number shown in the accompanying drawings;

The pinch bracket sliding guide mechanism includes a pinch bracket sliding guide rail 331 that is installed on the frame 1 and extends laterally, and a clip that is installed on the pinch vertical plate 33 and is slidingly matched with the pinch bracket sliding guide rail 331. Send the bracket sliding slider 332; the pinch bracket sliding slider 332 is installed on the back side of the pinch vertical plate 33, and the pinch base frame 34 is installed on the front side of the pinch vertical plate 33;

The pinch bracket sliding drive mechanism includes a pinch bracket slide drive screw 36, a pinch bracket slide drive nut 37 and a pinch bracket slide drive motor 38, and the pinch bracket slide drive screw 36 is pivotally mounted on the machine. On the frame 1, the pinch bracket sliding drive motor 38 is installed on the frame 1, and the pinch bracket sliding drive motor 38 is connected with the pinch bracket sliding driving screw 36 to drive the pinching bracket sliding driving screw 36 to rotate ;

The clutch device comprises a first pinch bracket follower limiting plate 333, a second pinch bracket follower limit plate 334, a pinch bracket follower guide rod group, a pinch lock cylinder 336 and a nut seat 337. The pinch bracket follow-up limit plate 333 and the second pinch bracket follow-up limit plate 334 are installed on the pinch bracket at intervals along the pinch bracket sliding direction, and the pinch bracket follow-up guide rod group includes several rods connected to The pinch bracket follower guide rod 335 between the first pinch bracket follower limit plate 333 and the second pinch bracket follower limit plate 334, in this embodiment, two pinch brackets are shown in the accompanying drawings Follow-up guide rod 335, in fact, the quantity of pinch-sending bracket follow-up guide rod 335 can be more or less than the number shown in the accompanying drawing, the first pinch-sending bracket follow-up limit plate 333 and the second pinch-sending bracket follow-up The moving limit plate 334 is located at the back side of the pinch vertical plate 33 of the pinch support and the second pinch support follow-up limit plate 334 is fixedly connected to the back side of the pinch vertical plate 33 while the first pinch support follow-up limit The plate 333 is connected with the pinch vertical plate 33 through the pinch bracket follow-up guide rod group and the second pinch bracket follow-up limit plate 334, and the length direction of the pinch bracket follow-up guide rod 335 is parallel to the pinch bracket sliding direction , that is, the pinch bracket follower guide rod 335, the pinch bracket sliding drive screw 36, and the pinch bracket slide guide rail 331 are parallel to each other, and the nut seat 337 is slidably set on the pinch bracket follower guide rod Outside the group, that is, the nut seat 337 is set outside the pinch bracket follower guide rod 335 of the pinch bracket follower guide rod group and slides along the length direction of the pinch support follower guide rod 335, that is, laterally slides. The cylinder body of the bracket locking cylinder 336 is installed on the second pinch bracket locking cylinder 334, the piston rod 3361 of the pinching bracket locking cylinder stretches out toward the nut seat 337, and the piston rod 3361 of the pinching bracket locking cylinder is parallel Follow-up guide rod 335 for the pinch bracket;

After the piston rod 3361 of the clamping support locking cylinder stretches out, the nut seat 337 is pushed away so that the nut seat 337 is clamped and fixed between the first pinching support follow-up limit plate 333 and the piston rod 3361 of the pinching support locking cylinder. Between, that is, the nut seat 337 is fixed together with the first pinch bracket follower limit plate 333;

After the piston rod 3361 of the pinch bracket locking cylinder retreats, the nut seat 337 moves along the pinch bracket follow-up guide between the first pinch bracket follow-up limiting plate 333 and the second pinch bracket follow-up limit plate 334. The rod group slides to realize follow-up;

The pinch bracket sliding drive nut 37 is installed on the nut seat 337, and the pinch bracket slide drive screw 36 passes through the pinch bracket slide drive nut 37 to form a screw nut pair.

The bending machine also includes a discharge assembly 5 located at the output ends of the two sets of workpiece output mechanisms. The workpieces output from the output ends of the two sets of workpiece output mechanisms fall onto the discharge assembly. Outfeed conveyor assembly 51 for longitudinally outputting workpieces.

The utility model can also include a controller (not shown in the figure) for controlling the first bending mechanism 2 , the follower mechanism 3 , the second bending mechanism 4 and the discharge assembly 5 .

The utility model can realize U-shaped bending and G-shaped bending;

Referring to Fig. 33a to Fig. 33e, the working process of realizing U-shaped bending is as follows:

As shown in Figure 33a, the follow-up plate 25 is in the follow-up position, and the first lower pressing plate 24 and the second lower pressing plate 44 are all in the position of releasing the workpiece. The moving plate 31 and the second lower pressing plate 44 are flat on the horizontal position, and the workpiece 6 is carried on the follower plate 25, the first lower press plate 24, the pinch follower plate 31 and the second lower press plate 44 after being sent into the bending machine;

As shown in Figure 33b, the clamping plate 32 is driven to descend to clamp the workpiece between the clamping plate 32 and the pinch follower plate 31, and the clamping base frame 34 and the second lower pressing plate 44 are driven to rise (it can also be Drive the follower plate to rise), the second lower pressing plate 44 is in the clamping workpiece position;

As shown in Figure 33c, the second rotating roller is driven to turn 90° counterclockwise to achieve bending of the front section of the workpiece 6. During the process of the second rotating roller turning 90° counterclockwise, the clutch of the follow-up mechanism The device is in a separated state, and the pinch bracket, pinch follower plate and clamping plate of the follow-up mechanism are dragged by the workpiece 6 to follow along the direction indicated by the arrow in Figure 33b, which can prevent the workpiece from being mixed with the pinch during the bending process. The relative displacement of the follower plate will wear the workpiece;

As shown in Figure 33d, the first lower pressing plate is driven to rise, the first lower pressing plate is in the position of clamping the workpiece, the follower plate is in the bending position, and the rack of the follower plate and the gear of the follower plate mesh with each other;

As shown in Figure 33e, the inner shaft is driven to rotate 90° clockwise to realize the first bending of the rear section of the workpiece 6. At this time, the workpiece is U-shaped, and the U-shaped bending is completed. During the clockwise rotation of 90°, the rack of the follower plate and the gear of the follower plate are always in mesh, which can prevent the relative displacement of the workpiece and the follower plate during the bending process and wear the workpiece.

The working process of realizing G-shaped bending is as follows:

Referring to Fig. 33a to Fig. 33k, the G-shaped bending is implemented on the basis of U-shaped bending, and the steps of Fig. 33a to Fig. 33e need to be executed (not described in detail here), and continue as follows:

As shown in Figure 33f, drive the follower plate to be in the follow-up position, and drive the first lower pressing plate and the second lower pressing plate to the position of releasing the workpiece;

As shown in Figure 33g, drive the pinch base frame down to a certain position to avoid the clockwise rotation of the first upper platen (for example, drive the pinch base frame down to the position shown in Figure 33a), and drive the first rotating roller to rotate clockwise over 90°;

As shown in Fig. 33h, the pinch base frame is driven down again to a certain position to locate the position where the rear section of the workpiece is to be bent for the second time;

As shown in Figure 33i, drive the follower plate to be at the bending position, and drive the first lower pressing plate to be at the position of clamping the workpiece;

As shown in Fig. 33j, the inner shaft is driven to turn 90° in the clockwise direction again, and the rear section of the workpiece 6 is bent again. At this time, the workpiece is G-shaped, and the G-shaped bending is completed. Fig. 33k shows a schematic diagram of the workpiece after the G-shaped bending is completed.

Claims (10)

1. A bending machine, comprising a frame, a first bending mechanism that can bend a workpiece on the frame, and a follower mechanism that can carry a workpiece on the frame, and is characterized in that: it also includes a set A second bending mechanism capable of bending workpieces on the frame, the follower mechanism is located between the first bending mechanism and the second bending mechanism. 2. The bending machine according to claim 1, characterized in that: A sliding guide mechanism of the second bending mechanism and a sliding driving mechanism of the second bending mechanism are arranged between the frame and the second bending mechanism, and the sliding driving mechanism of the second bending mechanism drives the second bending mechanism. The mechanism slides laterally along the sliding guide mechanism of the second bending mechanism, and the second bending mechanism approaches or moves away from the first bending mechanism when sliding laterally. 3. The bending machine according to claim 2, characterized in that: The follow-up mechanism includes a pinch bracket, a pinch bracket sliding guide mechanism, a pinch bracket slide drive mechanism, a clutch device, and a pinch follower plate that can carry workpieces, and the pinch follower plate is installed on the pinch bracket , the pinch bracket sliding guide mechanism and the pinch bracket sliding drive mechanism are arranged between the frame and the pinch bracket, the clutch device is set between the pinch bracket sliding drive mechanism and the pinch bracket and can be selectively Separate or engage the pinch bracket sliding drive mechanism with the pinch bracket to cut off or transfer the power input from the pinch bracket slide drive mechanism to the pinch bracket, and the pinch bracket is carried by the pinch follower plate when the clutch device is separated The workpiece is dragged and moves laterally along the slide guide mechanism of the pinch bracket, and the slide drive mechanism of the pinch bracket drives the pinch bracket to slide laterally along the slide guide mechanism of the pinch bracket or locks the pinch bracket in the set position; A clamping plate is also installed on the pinching bracket, the clamping plate is located above the pinching follower plate, and there is a device between the clamping plate and the pinching support that can drive the clamping plate close to or away from the pinch follower plate to clamp The clamping plate lifting drive mechanism that holds or loosens the workpiece. 4. The bending machine according to claim 3, characterized in that: The pinch bracket includes a pinch vertical plate and a pinch base frame. The pinch follower plate and the clamp plate are installed on the pinch base frame. A pinch base frame is installed between the pinch vertical plate and the pinch base frame. The guiding mechanism and the lifting and lowering drive mechanism of the pinch base frame, the lifting drive mechanism of the pinch base frame drives the pinch base frame to rise or fall along the lifting guide mechanism of the pinch base frame; The pinch vertical plate is provided with two sets of workpiece output mechanisms that can longitudinally output the workpieces carried on the pinch follower plate. The two sets of workpiece output mechanisms are separated by pinch base frames. Each set of workpiece output mechanisms includes a conveying bracket. , the conveyor belt assembly, the lifting guide mechanism of the conveying bracket and the lifting driving mechanism of the conveying bracket. The conveyor belt assembly is installed on the conveying bracket. , the lifting drive mechanism of the conveying support drives the conveying support to rise or fall along the lifting and guiding mechanism of the conveying support; The pinch bracket sliding guide mechanism includes a pinch bracket sliding guide rail extending laterally installed on the frame and a pinch bracket sliding guide rail mounted on the pinch vertical plate and slidingly matched with the pinch bracket sliding guide rail. slider; The pinch pedestal lifting guide mechanism includes a pinch pedestal lifting guide rail extending vertically installed on the pinch vertical plate and a pinch pedestal mounted on the pinching pedestal and slidingly matched with the pinching pedestal lifting guide rail. Base frame lifting slider; The pinch pedestal lifting drive mechanism includes a pinch pedestal lifting drive screw, a pinch pedestal lifting drive nut and a pinch pedestal lifting drive motor, and the pinch pedestal lifting drive screw is pivotally mounted on the pinch vertical plate , the lifting drive motor of the pinch base frame is installed on the pinch vertical plate, the pinch base frame lifting drive motor is connected with the pinch base frame lifting drive screw to drive the pinch base frame lifting drive screw to rotate, the pinch base frame The lifting drive nut is installed on the pinch base frame, and the pinch base frame lift drive screw rod passes through the pinch base frame lift drive nut to form a screw nut pair; The lifting and guiding mechanism of the conveying support includes a vertically extending conveying support lifting guide rail installed on the pinch vertical plate and a transporting support lifting slider installed on the conveying support and slidingly matched with the conveying support lifting guide rail; The lifting and lowering drive mechanism of the conveying bracket includes a lifting and lowering driving screw of the conveying bracket, a lifting and lowering driving nut of the conveying bracket and a driving motor for lifting and lowering the conveying bracket. On the vertical plate, the lifting drive motor of the conveying support is connected with the lifting drive screw of the conveying support to drive the lifting drive screw of the conveying support to rotate. Drive the nut to form a screw nut pair; The pinch base frame is provided with a pinch cantilever beam extending longitudinally, the length direction of the clamping plate is parallel to the length direction of the pinching cantilever beam, and the lifting and lowering drive mechanism of the clamping plate includes a plurality of The clamping plate lifting drive cylinder, the cylinder body of each clamping plate lifting drive cylinder is installed on the pinch cantilever beam, and the piston rod of each clamping plate lifting drive cylinder is connected to the clamping plate; The pinch bracket sliding drive mechanism includes a pinch bracket slide drive screw, a pinch bracket slide drive nut and a pinch bracket slide drive motor, the pinch bracket slide drive screw is pivotally mounted on the frame, and The sliding driving motor of the feeding bracket is installed on the frame, and the sliding driving motor of the pinching bracket is connected with the sliding driving screw rod of the pinching bracket to drive the sliding driving screw rod of the pinching bracket to rotate; The clutch device includes a first pinch bracket follow-up limit plate, a second pinch bracket follow-up limit plate, a pinch bracket follow-up guide rod group, a pinch bracket locking cylinder and a nut seat. The moving limit plate and the second pinch bracket follow-up limit plate are installed on the pinch bracket at intervals along the sliding direction of the pinch bracket, and the pinch bracket follow-up guide rod group includes several rods connected to the first pinch bracket. The pinch bracket follow-up guide rod between the moving limit plate and the second pinch bracket follow-up limit plate, the length direction of the pinch bracket follow-up guide rod is parallel to the sliding direction of the pinch bracket, and the nut seat can slide The ground shifter is set outside the follower guide rod group of the pinch bracket. The cylinder body of the pinch bracket locking cylinder is installed on the second pinch bracket follower limit plate. The piston rod of the pinch bracket lock cylinder extends toward the nut seat. out; After the piston rod of the clamping support locking cylinder stretches out, the nut seat is pushed so that the nut seat is clamped and fixed between the first pinching support follow-up limit plate and the piston rod of the pinching support locking cylinder; After the piston rod of the pinch bracket locking cylinder retracts, the nut seat slides along the pinch bracket follow-up guide rod group between the first pinch bracket follow-up limit plate and the second pinch bracket follow-up limit plate ; The pinch bracket sliding driving nut is installed on the nut seat, and the pinching bracket sliding driving screw rod passes through the pinching bracket sliding driving nut to form a screw nut pair. 5. The bending machine according to claim 4, characterized in that: the bending machine also includes a discharge assembly located at the output ends of the two sets of workpiece output mechanisms, and output from the output ends of the two sets of workpiece output mechanisms The workpieces fall onto the discharge assembly, and the discharge assembly includes several sets of discharge conveyor belt assemblies that can output the workpieces longitudinally. 6. The bending machine according to claim 2, characterized in that: The second bending mechanism includes a sliding frame of the second bending mechanism, a second rotating roller pivotally mounted on the sliding frame of the second bending mechanism in the longitudinal direction, a sliding frame and a second turning roller arranged on the second bending mechanism. The second rotating roller driving mechanism that can drive the second rotating roller between the rollers, the second upper pressing plate and the second lower pressing plate swing bracket that are installed on the second rotating roller and rotate together with the second rotating roller, and slidably The second lower pressing plate installed on the swing bracket of the second lower pressing plate, the second lower pressing plate guiding mechanism and the second lower pressing plate driving mechanism arranged between the second lower pressing plate swinging bracket and the second lower pressing plate, the second lower pressing plate and the second lower pressing plate The second upper pressing plate is arranged in parallel, and the driving mechanism of the second lower pressing plate drives the second lower pressing plate to slide along the second lower pressing plate guide mechanism so that the second lower pressing plate approaches or moves away from the second upper pressing plate to clamp or release the workpiece. 7. The bending machine according to claim 6, characterized in that: The sliding frame of the second bending mechanism includes a sliding seat of the second bending mechanism and a sliding plate of the second bending mechanism, and the second rotating roller is pivotally mounted on the sliding seat of the second bending mechanism and the second bending mechanism. Between the sliding plates of the mechanism; The sliding guide mechanism of the second bending mechanism includes a sliding plate guide rail extending laterally installed on the frame, a sliding plate slide mounted on the sliding plate of the second bending mechanism and slidingly matched with the sliding plate guide rail. block, the sliding seat guide rail extending laterally installed on the frame, the sliding seat slider installed on the sliding seat of the second bending mechanism and slidingly matched with the sliding seat guide rail; The sliding driving mechanism of the second bending mechanism includes a sliding driving screw rod of the second bending mechanism which is pivotally mounted on the frame The sliding drive nut of the bending mechanism and the sliding driving motor of the second bending mechanism installed on the frame, the output shaft of the sliding driving motor of the second bending mechanism and the sliding driving screw rod of the second bending mechanism connected to drive the rotation of the sliding drive screw of the second bending mechanism, the sliding driving screw of the second bending mechanism passes through the sliding driving nut of the second bending mechanism to form a screw nut pair; The second rotating roller driving mechanism includes a second rotating roller driving servo motor installed on the sliding seat of the second bending mechanism, and the second rotating roller driving servo motor is connected with the second rotating roller to drive the second rotating roller to rotate. 8. The bending machine according to any one of claims 1 to 7, characterized in that: the first bending mechanism includes a first rotating roller pivotally mounted on the frame in the longitudinal direction, arranged on the frame Between the first rotating roller and the first rotating roller driving mechanism that can drive the first rotating roller to rotate, the first upper platen and the first lower platen swing bracket that are installed on the first rotating roller and rotate together with the first rotating roller, The first lower pressing plate slidably installed on the first lower pressing plate swing bracket, the first lower pressing plate guide mechanism and the first lower pressing plate driving mechanism arranged between the first lower pressing plate swinging bracket and the first lower pressing plate, can For the follower plate that carries the workpiece, the first lower pressing plate is arranged in parallel with the first upper pressing plate, and the driving mechanism of the first lower pressing plate drives the first lower pressing plate to slide along the first lower pressing plate guiding mechanism so that the first lower pressing plate approaches or moves away from the first upper pressing plate. The pressing plate is used to clamp or loosen the workpiece. An inner shaft is also pivotally mounted on the frame. An inner shaft drive mechanism that can drive the inner shaft to rotate is provided between the frame and the inner shaft. A follower inner shaft is installed on the inner shaft. Rotating follower plate swing bracket, the follower plate is installed on the follower plate swing support and follows the follower plate swing support to rotate around the inner axis so that when the follower plate rotates, it can be driven to be clamped on the first upper pressing plate and the second The workpiece between the lower pressing plates is bent around the first rotating rod. 9. The bending machine according to claim 8, characterized in that: The first rotating roller is set outside the inner shaft; The follower plate swing support includes a follower plate lifting frame and a follower plate support outer frame, the follower plate support outer frame is installed on the inner shaft, and the follower plate is slidably installed on the follower plate lift frame, The guide mechanism of the follower plate lifter and the driving mechanism of the follower plate lifter are arranged between the moving plate lifting frame and the supporting outer frame of the follower plate, and the driving mechanism of the follower plate lifting frame drives the follower plate lifting frame and the follower The plate rises or falls along the guide mechanism of the lifting frame of the follower plate so that the follower plate approaches or moves away from the inner shaft; A follower plate guide mechanism, a follower plate limit mechanism and a push mechanism for driving the follower plate to reset are provided between the follower plate and the follower plate lifting frame; The follower plate is guided by the guide mechanism of the follower plate to slide in a follow-up direction in which the workpiece carried by the follow-up plate can be dragged and slid, and in a reset direction opposite to the follow-up direction; The pushing mechanism includes a rodless cylinder, the cylinder body of which is installed on the follower plate, and the lifting frame of the follower plate is provided with a reset block which can prevent the moving body of the rodless cylinder from sliding along the follower direction. The moving body of the rodless cylinder slides along the follow-up direction and when touching the reset stopper, the reset stopper blocks the moving body of the rodless cylinder from sliding along the follow-up direction; The limit mechanism of the follower plate includes a limit upper stopper installed on the follower plate and a limit lower stopper installed on the follower plate lifting frame. The follower plate slides along the reset direction and is on the limit position. Stop when the stopper touches the lower stopper; The follower plate supporting outer frame includes two follower plate swing arms arranged at intervals and a follower plate bottom beam frame connected between the two follower plate swing arms; The driving mechanism of the follower plate lifting frame is arranged between the bottom beam frame of the follower plate and the follower plate lifting frame. The driving mechanism of the follower plate lifting frame includes two follower plate turbine screw lifters and one for driving two A follower plate lifting motor that operates synchronously with two follower plate turbine screw lifters, two follower plate turbine screw lifters and follower plate lift motors are installed on the bottom beam frame of the follower plate, the follower plate lift motor and There is a follower plate transmission mechanism that can realize the synchronous action of the two turbine screw lifts between the two follower plate turbine screw lifts; The guide mechanism of the follower plate lifter is arranged between the follower plate lifter and the two follower plate swing arms, and the guide mechanism of the follower plate lifter includes a follower plate lifter arranged on the two follower plate swing arms. Guide rails and follower plate lifting sliders arranged at both ends of the follower plate lifting frame and slidingly matched with the follower plate lift guide rails; A follower plate rack is fixed on the follower plate, and a follower plate gear matched with the follower plate rack is fixed on the first rotating roller. Line, the length direction of the follower plate rack is parallel to the sliding direction of the follower plate; The driving mechanism of the follower plate lifting frame drives the follower plate to rise or fall between a bending position close to the inner shaft and a follower position away from the inner shaft; When the follower plate is in the bending position, the follower plate rack and follower plate gear are always in mesh; When the follower plate is in the follow-up position, the follower plate rack is separated from the follower plate gear; There are two follower plate racks and two follower plate gears, one follower plate tooth rack cooperates with a follower plate gear, and the two follower plate tooth racks are respectively fixed on both sides of the follower plate. 10. The bending machine according to claim 8, characterized in that: The first lower pressing plate has an inner end and an outer end opposite to the inner end, the first lower pressing plate guiding mechanism and the first lower pressing plate driving mechanism are arranged between the inner end of the first lower pressing plate and the first lower pressing plate swing bracket Between the outer end of the first lower pressing plate and the first upper pressing plate, there is a locking plate mechanism that allows or prevents the outer end of the first lower pressing plate from moving away from the first upper pressing plate; The lock plate mechanism includes a lock plate lower cylinder on the first lower plate and a lock rod mechanism that can lock the piston rod of the lock plate lower cylinder on the first upper plate, and the cylinder body of the lock plate lower cylinder is fixed on the second The outer end of the lower pressing plate, the piston rod of the lower cylinder of the locking plate moves toward the first upper pressing plate; After the piston rod of the cylinder under the lock plate is stretched out, the lock rod mechanism can lock or unlock the piston rod of the cylinder under the lock plate to prevent or allow the piston rod of the cylinder under the lock plate to retract; The outer end of the piston rod of the cylinder under the lock plate is provided with a limit stopper; The lock lever mechanism comprises a cylinder on the lock plate, a lock plate slide seat and a lock plate slide block. The through hole that restricts the entry or exit of the stopper. The lock plate slider is slidably installed in the lock plate slide seat. The piston rod of the cylinder on the lock plate is connected with the lock plate slider. The cylinder on the lock plate drives the lock plate slider along the Radial entry or exit of the hole through the hole; When the lock plate slider enters the through hole, the through hole is blocked by the lock plate slider, and the lock plate slider prevents the stopper from entering or exiting the through hole; The through hole that the stopper can enter or exit when the lock plate slider exits the through hole; The first lower pressing plate driving mechanism includes a first lower pressing plate driving cylinder, the cylinder body of the first lower pressing plate driving cylinder is fixed on the bottom of the first lower pressing plate, and the outer end of the piston rod of the first lower pressing plate driving cylinder is connected to the first lower pressing plate driving cylinder. The swing bracket of the pressing plate is fixed; The first lower platen guide mechanism includes a first lower platen guide rail mounted on the first lower platen swing bracket and a first lower platen guide rail mounted on the inner end of the first lower platen and slidingly matched with the first lower platen guide rail. Lower platen guide slider.