Automobile headrest pipe frame production line

Abstract

The utility model discloses an automobile headrest pipe frame production line which comprises a bent pipe feeding device, a two-way pipe bending machine, a transfer mechanical arm and a vertical gear broaching machine, the bent pipe feeding device is located on one side in front of the two-way pipe bending machine, the vertical gear broaching machine is located on the other side in front of the two-way pipe bending machine, and the transfer mechanical arm is located in front of the two-way pipe bending machine. The pipe bending feeding device can transfer a pipe to the position in front of the two-way pipe bending machine to be clamped by the two-way pipe bending machine, the two-way pipe bending machine can bend the pipe into an automobile headrest pipe frame, the transferring mechanical arm can transfer the automobile headrest pipe frame into the vertical gear broaching machine, and the vertical gear broaching machine can conduct gear broaching machining on the automobile headrest pipe frame. According to the automobile headrest pipe frame production line, automatic production of automobile headrest pipe frames can be achieved, and the production efficiency and the product quality are greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of pipe forming equipment, and particularly relates to an automobile headrest pipe rack production line. Background Art

[0002] An automobile headrest pipe rack is a complex pipe fitting. The automobile headrest pipe rack needs to be bent leftward and rightward and has multiple elbows. Usually, the automobile headrest pipe rack can be obtained by a worker clamping it on pipe benders with different bending directions multiple times for multiple bends. After being bent, the worker also needs to load the automobile headrest pipe rack into a horizontal tooth drawing machine for tooth drawing processing, so that tooth grooves are processed on both the left and right sides at both ends of the automobile headrest pipe rack. The above-mentioned processing method of the automobile headrest pipe rack has the disadvantages of low production efficiency and difficult product quality assurance. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an automobile headrest pipe rack production line that can realize automated production and greatly improve production efficiency and product quality.

[0004] To solve the above problems, the technical solution adopted by the present utility model is as follows: An automobile headrest pipe rack production line, characterized in that it includes: a bent pipe feeding device, a two-way pipe bender, a transfer manipulator, and a vertical gear hobbing machine. The bent pipe feeding device is located on one side in front of the two-way pipe bender, the vertical gear hobbing machine is located on the other side in front of the two-way pipe bender, and the transfer manipulator is located in front of the two-way pipe bender. The bent pipe feeding device can transfer the pipe to the front of the two-way pipe bender for the two-way pipe bender to clamp. The two-way pipe bender can bend the pipe into an automobile headrest pipe rack. The transfer manipulator can transfer the automobile headrest pipe rack into the vertical gear hobbing machine, and the vertical gear hobbing machine can perform gear hobbing processing on the automobile headrest pipe rack. The structure of the vertical gear hobbing machine includes: a machine base, on which a gantry frame, a die seat, an upper drive plate, and a lower drive plate are arranged. The upper drive plate is located above the die seat, and the lower drive plate is located below the die seat. An upper clamping die and a lower clamping die are arranged between the upper drive plate and the die seat. The upper clamping die is fixed to the upper drive plate, and the lower clamping die is fixed to the die seat. A feeding gap is left between the lower clamping die and the upper clamping die to allow both ends of the automobile headrest pipe rack to be inserted therebetween. A pushing cylinder is arranged in front of the die seat, and a backing plate is arranged behind the die seat. The pushing cylinder can push the automobile headrest pipe rack inserted between the lower clamping die and the upper clamping die backward, so that the automobile headrest pipe rack can be abutted against the backing plate for front and rear positioning. Several guide rods passing through the die seat and the machine base are arranged between the upper drive plate and the lower drive plate. The two ends of the guide rods are respectively fixed to the upper drive plate and the lower drive plate. A lifting cylinder is arranged on the lower drive plate. The cylinder body of the lifting cylinder is fixed to the lower drive plate, and the top of the piston rod of the lifting cylinder is fixed to the machine base. After the lifting cylinder expands and contracts, it can drive the upper drive plate to lift through the lower drive plate, so that the upper clamping die can move downward to clamp the automobile headrest pipe rack with the lower clamping die. Several clamping holes and a gear hobbing hole are arranged between the lower clamping die and the upper clamping die. The upper half of each clamping hole and the gear hobbing hole is arranged on the upper clamping die, and the lower half of each clamping hole and the gear hobbing hole is arranged on the lower clamping die. When the two clamping dies are clamped, the upper and lower halves of the clamping hole and the gear hobbing hole can be spliced together. During processing, one end of the automobile headrest pipe rack to be gear hobbed is inserted and clamped in the gear hobbing hole, and the other end of the automobile headrest pipe rack is inserted and clamped in a clamping hole. Vertically arranged die through holes are arranged on the upper drive plate, the upper clamping die, the lower clamping die, and the die seat, and the die through holes are connected up and down. On the gantry frame, a lifting die frame located above the die seat and a first servo electric cylinder capable of driving the lifting die frame to lift are arranged. On the lifting die frame, a gear hobbing die seat capable of sliding left and right and a second servo electric cylinder capable of driving the gear hobbing die seat to move left and right are arranged. A gear hobbing die is installed on the bottom side of the gear hobbing die seat. After the lifting die frame lifts, the gear hobbing die can pass through each die through hole to perform gear hobbing processing on the side of one end of the fixed automobile headrest pipe rack. After the gear hobbing die seat moves left and right, the gear hobbing depth of the gear hobbing die can be adjusted.

[0005] Furthermore, for the aforementioned automobile headrest pipe rack production line, specifically: The structure of the double-direction bending machine includes: a machine table, on which there is a feeding trolley capable of sliding back and forth and a feeding driving mechanism for driving the feeding trolley to slide back and forth for feeding. On the feeding trolley, there is a pipe clamping mechanism for clamping the pipe and a pipe cornering mechanism capable of cooperating with the pipe clamping mechanism to drive the pipe to rotate. At the end of the machine table in front of the feeding trolley, there is a liftable lifting seat and a die-changing lift driving mechanism for driving the lifting seat to lift and lower. On the lifting seat, there is a bending seat capable of sliding left and right and a die-changing left-right driving mechanism for driving the bending seat to slide left and right. On the bending seat, there is a guide clamp transverse moving table capable of sliding left and right, a guide clamp transverse driving mechanism for driving the guide clamp transverse moving table to slide left and right, a vertically arranged rotatable main shaft, a main shaft driving mechanism for driving the main shaft to rotate, and a rotating arm. The rotating arm is fixed to the main shaft, so that after the main shaft rotates, it can drive the rotating arm to swing horizontally left and right. At the top of the main shaft, there are stacked left and right bending wheel dies. On the guide clamp transverse moving table, there is an auxiliary pushing table capable of sliding back and forth and an auxiliary pushing driving mechanism for driving the auxiliary pushing table to slide back and forth. On the auxiliary pushing table, there is a guide clamp mounting seat. The vertically arranged left and right bending guide clamps are respectively arranged on the left and right sides of the guide clamp mounting seat. On the rotating arm, there is a main clamp translation table capable of sliding in and out along the rotating arm and a main clamp clamping driving mechanism for driving the main clamp translation table to slide in and out. On the main clamp translation table, there is a main clamp mounting table capable of sliding back and forth and a main clamp die-changing mechanism for driving the main clamp mounting table to slide back and forth. On the main clamp mounting table, there are vertically arranged and front-back staggered left and right bending main clamps. The main clamps and the wheel dies are located in front of the guide clamps. The left bending main clamp, the left bending guide clamp, and the left bending wheel die are of the same height for left bending processing of the pipe. The right bending main clamp, the right bending guide clamp, and the right bending wheel die are of the same height for right bending processing of the pipe. The main clamp clamping driving mechanism, the guide clamp transverse driving mechanism, the auxiliary pushing driving mechanism, the main shaft driving mechanism, the die-changing left-right driving mechanism, the die-changing lift driving mechanism, the feeding driving mechanism, and the pipe cornering mechanism are all driven by servo motors. The pipe can be conveyed between the main clamps and the wheel dies under the conveyance of the feeding trolley. After the main clamps move inward under the drive of the main clamp clamping driving mechanism, they can clamp the pipe together with the wheel dies. The guide clamps can be attached to the outer side of the rear part of the pipe to be bent under the drive of the guide clamp transverse driving mechanism. After the main shaft rotates under the drive of the main shaft driving mechanism, the main clamps can rotate together with the wheel dies under the drive of the rotating arm to perform bending processing on the clamped pipe. The guide clamps can move forward together with the pipe during bending processing under the drive of the auxiliary pushing driving mechanism. The left and right bending main clamps can move back and forth under the drive of the main clamp die-changing mechanism for die-changing, so that during left bending processing, the left bending main clamp can be aligned left and right with the left bending wheel die to cooperate with bending, and the right bending main clamp can not be aligned left and right with the right bending wheel die. During right bending processing, the right bending main clamp can be aligned left and right with the right bending wheel die to cooperate with bending, and the left bending main clamp can not be aligned left and right with the left bending wheel die.After the two sets of corresponding guide clamps, main clamps, and wheel dies are lowered under the drive of the die-changing lifting drive mechanism, they can avoid the pipe to be bent, enabling the two sets of corresponding guide clamps, main clamps, and wheel dies to change the die. The two sets of corresponding guide clamps, main clamps, and wheel dies can switch heights through the die-changing lifting drive mechanism and be respectively level with the pipe. After the two wheel dies move left and right under the drive of the die-changing left-right drive mechanism, they can change the die. After the two guide clamps move left and right under the drive of the guide clamp transverse drive mechanism, they can change the die. After the two main clamps swing left and right driven by the swing arm, they can change the die. When performing left bending processing, the left bending wheel die can be pre-moved to the left side of the pipe, the left bending guide clamp can be pre-moved to the right side of the pipe and face the pipe, and the left bending main clamp can be pre-swing to the right side of the pipe. When performing right bending processing, the right bending wheel die can be pre-moved to the right side of the pipe, the right bending guide clamp can be pre-moved to the left side of the pipe and face the pipe, and the right bending main clamp can be pre-swing to the left side of the pipe.

[0006] Further, in the aforementioned automobile headrest pipe rack production line, wherein: the lifting seat is assisted in lifting by a cylinder.

[0007] Further, in the aforementioned automobile headrest pipe rack production line, wherein: the main clamp die-changing mechanism is a cylinder.

[0008] Further, in the aforementioned automobile headrest pipe rack production line, wherein: two guide blocks are arranged left and right at the front end of the machine table. The two guide blocks can approach or move away from each other under the action of two cylinders. A guide wheel is respectively arranged on the opposite side surfaces of the two guide blocks. After the two guide blocks approach each other, the two guide wheels can clamp on the outside of the pipe, enabling the two guide wheels to guide the forward and backward movement of the pipe.

[0009] Further, for the aforementioned automobile headrest pipe rack production line, it includes: The structure of the pipe bending feeding device includes: a feeding rack, on which there are two supporting seats arranged side by side at intervals left and right. On the two supporting seats, there are respectively provided with supporting plates, clamping plates, and clamping cylinders for driving the clamping plates to move left and right. The two supporting plates are located between the two clamping plates, and the two supporting plates are arranged side by side at intervals left and right. The two clamping plates are arranged side by side at intervals left and right. The two clamping plates can move towards each other under the drive of their respective clamping cylinders. On the two supporting plates, there are respectively provided with positioning grooves. The two supporting plates are used to support the pipe. When the pipe is conveyed to the two supporting plates, the pipe can be positioned front and back by respectively clamping downward into the two positioning grooves at its two ends. On the inner sides of the two clamping plates, there are respectively provided with rotatable turntables. The two turntables are arranged opposite to each other left and right. After the two turntables move towards each other driven by their respective clamping plates, they can clamp the pipe located on the two supporting plates left and right. And when clamping, the two ends of the pipe can be respectively located at the centers of the two turntables. On the outer side of one clamping plate, there is a rotary servo motor for driving the turntable on the corresponding clamping plate to rotate. After the two turntables rotate, they can drive the clamped pipe to rotate. On one supporting seat, there is a weld detection sensor. When the pipe is driven to rotate by the two turntables, the weld on the pipe can pass in front of the weld detection sensor and be detected by the weld detection sensor. On the top of the feeding rack, there is a transfer rack. On the transfer rack, there is a transfer seat that can slide back and forth and a transfer driving mechanism for driving the transfer seat to slide back and forth. On the transfer seat, there is a grasping seat that can move up and down and a grasping lifting mechanism for driving the grasping seat to move up and down. At the bottom of the grasping seat, there are pneumatic fingers for grasping the pipe. After the pneumatic fingers move downward driven by the grasping lifting mechanism, the pneumatic fingers can grasp the pipe supported by the two supporting plates. After the grasped pipe moves forward driven by the transfer driving mechanism, the pipe can be transferred to the front of the double-sided pipe bender, so that the pipe can be clamped by the double-sided pipe bender for pipe bending.

[0010] Further, for the aforementioned automobile headrest pipe rack production line, it includes: The two supporting seats are respectively installed on the feeding rack through a guide rail. The guide rail is fixed on the feeding rack, and the supporting seat is installed on the guide rail. The supporting seat can slide left and right on the corresponding guide rail. There is a locking screw on the supporting seat. After the locking screw is screwed in, it can abut against the guide rail, so that the supporting seat can be fixed to the guide rail and cannot slide.

[0011] Further, for the aforementioned automobile headrest pipe rack production line, where: a storage bin is provided at the rear of the loading rack, the pipes to be bent can be placed in the storage bin in a left-right direction, the bottom of the storage bin is arranged to slope downward from back to front, a loading channel is provided between the storage bin and the two supporting plates, a loading landslide is provided between the loading channel and the two supporting plates, the loading channel and the loading landslide are arranged to slope downward from back to front, the height of the loading channel only allows the pipes to pass through one by one in a row, a lifting platform driven by a cylinder to lift and lower is provided at the front bottom of the storage bin, after the lifting platform rises, it can pass through the bottom of the storage bin to lift a pipe in the storage bin, the width of the lifting platform only allows one pipe to be lifted each time, the top of the lifting platform is arranged to slope forward, so that the lifted pipe can lean forward against the front wall of the storage bin when rising, the pipe can be lifted by the lifting platform to the entrance of the loading channel, at this time the pipe can roll into the loading channel, a lifting channel is provided between the loading landslide and the exit of the loading channel, the width of the lifting channel only allows one pipe to be lifted, a loading table driven by a cylinder to lift and lower is provided at the bottom of the lifting channel, after the loading table rises, it can lift the first pipe rolling out of the loading channel, the top of the loading table is arranged to slope forward, so that the lifted pipe can lean forward against the back side wall of the loading landslide when rising, the pipe can be lifted by the loading table to the top of the loading landslide, at this time the pipe can roll onto the loading landslide and can roll through the loading landslide into the positioning grooves on the two supporting plates.

[0012] Further, for the aforementioned automobile headrest pipe rack production line, where: the height of the loading channel is restricted by an upper limit plate, and the height and front-back position of the upper limit plate are adjustable.

[0013] Further, for the aforementioned automobile headrest pipe rack production line, where: the clamping cylinder is arranged inside the corresponding clamping plate.

[0014] The advantages of the present utility model are as follows: the aforementioned automobile headrest pipe rack production line can rotate the pipe through the pipe loading device for bending to adjust the orientation of the weld on the pipe, so that the weld orientations of all the pipes to be bent are the same before bending, thereby enabling the quality of each bent pipe fitting to tend to be consistent, which can greatly improve the product quality; in addition, the two-way pipe bender can bend the pipe to the left and to the right, so that two-way bent pipe fittings can be obtained by one-time clamping, thereby greatly improving the production efficiency of the pipe rack; in addition, since each driving mechanism is driven by a servo motor, the bending precision of the pipe rack can be greatly improved. Moreover, compared with the connecting rod drive of the horizontal broaching machine, the vertical broaching machine is driven by a servo motor for broaching and die feeding, thereby having better machining precision, less burrs, higher efficiency, and a wider range of processed product specifications. Description of the Drawings

[0015] Figure 1It is a schematic structural diagram of the production line of the car headrest pipe rack described in the present utility model.

[0016] Figure 2 It is Figure 1 a three-dimensional structural diagram of the middle bent pipe feeding device.

[0017] Figure 3 It is Figure 1 a sectional structural diagram of the middle bent pipe feeding device.

[0018] Figure 4 It is Figure 1 a structural diagram of the middle double-direction bending machine.

[0019] Figure 5 It is Figure 1 a sectional structural diagram of the vertical gear hobbing machine. Specific embodiments

[0020] The present utility model will be further described in detail below in conjunction with specific embodiments and the drawings.

[0021] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 5As shown in the figure, the production line of the automotive headrest pipe rack includes: a pipe feeding device 1 for bends, a two-way pipe bender 2, a transfer manipulator 3, and a vertical gear hobbing machine 4. The pipe feeding device 1 for bends is located on one side in front of the two-way pipe bender 2, the vertical gear hobbing machine 4 is located on the other side in front of the two-way pipe bender 2, and the transfer manipulator 3 is located in front of the two-way pipe bender 2. The pipe feeding device 1 for bends can transfer the pipe to the front of the two-way pipe bender 2 for the two-way pipe bender 2 to clamp. The two-way pipe bender 2 can bend the pipe into an automotive headrest pipe rack. The transfer manipulator 3 can transfer the automotive headrest pipe rack into the vertical gear hobbing machine 4, and the vertical gear hobbing machine 4 can perform gear hobbing processing on the automotive headrest pipe rack. The structure of the pipe feeding device 1 for bends includes: a feeding rack 11, on which two supporting seats 12 are arranged side by side at intervals from left to right. On the two supporting seats 12, there are respectively arranged supporting plates 13, clamping plates 14, and a clamping cylinder 15 for driving the clamping plate 14 to move left and right. The two supporting plates 13 are located between the two clamping plates 14, and the two supporting plates 13 are arranged side by side at intervals from left to right. The two clamping plates 14 are arranged side by side at intervals from left to right. The two clamping plates 14 can move towards each other under the drive of their respective clamping cylinders 15. On the two supporting plates 13, there are respectively arranged positioning grooves 16. The two supporting plates 13 are used for supporting the pipe. When the pipe is conveyed onto the two supporting plates 13, the pipe can be positioned front and back by respectively clamping into the two positioning grooves 16 through its two ends downward. On the inner sides of the two clamping plates 14, there are respectively arranged rotatable turntables 17. The two turntables 17 are arranged opposite to each other from left to right. After the two turntables 17 move towards each other driven by their respective clamping plates 14, they can clamp the pipe located on the two supporting plates 13 from left to right, and when clamping, the two ends of the pipe can be respectively located at the centers of the two turntables 17. On the outer side of one clamping plate 14, there is a rotary servo motor 18 for driving the turntable 17 on the clamping plate 14 where it is located to rotate. After the two turntables 17 rotate, they can drive the clamped pipe to rotate. On one supporting seat 12, there is a weld detection sensor 19. When the pipe is rotated by the two turntables 17, the weld on it can pass in front of the weld detection sensor 19 and be detected by the weld detection sensor 19. The weld detection sensor 19 is connected to the controller, so that the controller can obtain the position of the weld on the pipe through the weld detection sensor 19. Next, under the control of the controller, the pipe to be bent is rotated by a preset angle and then stops rotating. In this way, the weld orientations of each pipe to be bent can be kept consistent before bending. On the top of the feeding rack 11, there is a transfer rack 121. On the transfer rack 121, there is a transfer seat 122 that can slide back and forth and a transfer driving mechanism for driving the transfer seat 122 to slide back and forth. The transfer seat 122 is installed on the transfer rack 121 through a linear guide rail. The transfer driving mechanism uses a gear and a rack to drive the transfer seat 122. On the transfer seat 122, there is a grasping seat 123 that can move up and down and a grasping lifting mechanism for driving the grasping seat 123 to move up and down. The grasping seat 123 is installed on the transfer seat 122 through a linear guide rail.The grasping lifting mechanism uses a gear and a rack to drive the grasping seat 123; a pneumatic finger 124 for grasping pipes is arranged at the bottom of the grasping seat 123. After the pneumatic finger 124 moves downward under the drive of the grasping lifting mechanism, the pneumatic finger 124 can grasp the pipes held by the two supporting plates 13. After the grasped pipes move forward under the drive of the transfer drive mechanism, the pipes can be transferred to the front of the two-way pipe bender 2, so that the pipes can be clamped by the two-way pipe bender 2 for pipe bending; the structure of the vertical gear hobbing machine 4 includes: a machine base 41, on which a gantry 42, a die seat 43, an upper drive plate 44, and a lower drive plate 45 are arranged. The upper drive plate 44 is located above the die seat 43, and the lower drive plate 45 is located below the die seat 43. An upper clamping die 46 and a lower clamping die 47 are arranged between the upper drive plate 44 and the die seat 43. The upper clamping die 46 is fixed to the upper drive plate 44, and the lower clamping die 47 is fixed to the die seat 43. There is a feeding gap 48 between the lower clamping die 47 and the upper clamping die 46 that can allow both ends of the automotive headrest pipe rack to be inserted between them. A pushing cylinder is arranged in front of the die seat 43, and a backing plate is arranged behind the die seat 43. The pushing cylinder can push the automotive headrest pipe rack inserted between the lower clamping die 47 and the upper clamping die 46 backward, so that the automotive headrest pipe rack can be abutted against the backing plate for front and rear positioning. Several guide rods 49 passing through the die seat 43 and the machine base 41 are arranged between the upper drive plate 44 and the lower drive plate 45. Both ends of the guide rod 49 are fixed to the upper drive plate 44 and the lower drive plate 45 respectively. A lifting cylinder 410 is arranged on the lower drive plate 45. The cylinder body of the lifting cylinder 410 is fixed to the lower drive plate 45, and the top of the piston rod of the lifting cylinder 410 is fixed to the machine base 41. After the lifting cylinder 410 expands and contracts, it can drive the upper drive plate 44 to lift through the lower drive plate 45, so that the upper clamping die 46 can move downward and the lower clamping die 47 can clamp the automotive headrest pipe rack. Several clamping holes 412 and a gear hobbing hole 411 are arranged between the lower clamping die 47 and the upper clamping die 46. The upper half parts of each clamping hole 412 and the gear hobbing hole 411 are arranged on the upper clamping die 46, and the lower half parts of each clamping hole 412 and the gear hobbing hole 411 are arranged on the lower clamping die 47. When the two clamping dies are clamped, the upper and lower half parts of the clamping holes 412 and the gear hobbing hole 411 can be spliced together. During processing, one end of the automotive headrest pipe rack to be gear hobbed is inserted and clamped in the gear hobbing hole 411, and the other end of the automotive headrest pipe rack is inserted and clamped in a clamping hole 412. The setting of multiple clamping holes 412 is to facilitate the adjustment of the gear hobbing processing position of the automotive headrest pipe rack. Vertical die through holes 413 are arranged on the upper drive plate 44, the upper clamping die 46, the lower clamping die 47, and the die seat 43, and each die through hole 413 is vertically connected. An elevating die carrier 415 located above the die seat 43 and a first servo electric cylinder 414 capable of driving the elevating die carrier 415 to lift are arranged on the gantry 42.A tooth drawing die base 416 capable of sliding left and right and a second servo electric cylinder 417 capable of driving the tooth drawing die base 416 to move left and right are provided on the lifting die carrier 415. A tooth drawing die 418 is installed on the bottom side of the tooth drawing die base 416. After the lifting die carrier 415 is lifted and lowered, the tooth drawing die 418 can pass through each die through hole 413 to perform tooth drawing processing on the side of one end of the fixed vehicle headrest pipe rack. After the tooth drawing die base 416 moves left and right, the tooth drawing depth of the tooth drawing die 418 can be adjusted. The vehicle headrest pipe rack is inserted between the lower clamping die 47 and the upper clamping die 46 by the transfer manipulator 3, and then the inserted vehicle headrest pipe rack is pushed backward by the pushing cylinder, so that the vehicle headrest pipe rack can be abutted against the backing plate for front and rear positioning. After the tooth drawing processing on one side of one end of the vehicle headrest pipe rack is completed, the transfer manipulator 3 grabs the vehicle headrest pipe rack and adjusts the position of the vehicle headrest pipe rack, and then inserts it into the vertical tooth drawing machine 4 multiple times for tooth drawing processing, so that tooth grooves can be processed on both sides of both ends of the vehicle headrest pipe rack.,

[0022] Such as Figure 4As shown in the figure, the structure of the double-direction pipe bender includes: a machine table 21, on which there is a feeding trolley 22 that can slide back and forth and a feeding driving mechanism for driving the feeding trolley 22 to slide back and forth for feeding. On the feeding trolley 22, there is a pipe clamping mechanism for clamping the pipe 218 and a pipe corner mechanism that can cooperate with the pipe clamping mechanism to drive the pipe 218 to rotate. At the end of the machine table 21 in front of the feeding trolley 22, there is a liftable lifting seat 23 and a die-changing lift driving mechanism for driving the lifting seat 23 to lift and lower. On the lifting seat 23, there is a pipe bending seat 24 that can slide left and right and a die-changing left and right driving mechanism for driving the pipe bending seat 24 to slide left and right. On the pipe bending seat 24, there is a guide clamp transverse moving table 25 that can slide left and right, a guide clamp transverse driving mechanism for driving the guide clamp transverse moving table 25 to slide left and right, a vertically arranged rotatable main shaft 26, a main shaft driving mechanism for driving the main shaft 26 to rotate, and a swing arm 27. The swing arm 27 is fixed to the main shaft 26, so that after the main shaft 26 rotates, it can drive the swing arm 27 to swing left and right horizontally. At the top of the main shaft 26, there are stacked left and right pipe bending die 28 and right pipe bending die 29. On the guide clamp transverse moving table 25, there is an auxiliary pushing table 210 that can slide back and forth and an auxiliary pushing driving mechanism for driving the auxiliary pushing table 210 to slide back and forth. On the auxiliary pushing table 210, there is a guide clamp mounting seat 211. The vertically arranged left pipe bending guide clamp 212 and right pipe bending guide clamp 213 are respectively arranged on the left and right sides of the guide clamp mounting seat 211. On the swing arm 27, there is a main clamp translation table 214 that can slide in and out along the swing arm 27 and a main clamp clamping driving mechanism for driving the main clamp translation table 214 to slide in and out. On the main clamp translation table 214, there is a main clamp mounting table 215 that can slide back and forth and a main clamp die-changing mechanism for driving the main clamp mounting table 215 to slide back and forth. On the main clamp mounting table 215, there are vertically arranged and staggered left pipe bending main clamps 216 and right pipe bending main clamps 217 in the front and back. The main clamps and the die are located in front of the guide clamps. The left pipe bending main clamp 216, the left pipe bending guide clamp 212, and the left pipe bending die 28 are of the same height and are used for left bending processing of the pipe 218. The right pipe bending main clamp 217, the right pipe bending guide clamp 213, and the right pipe bending die 29 are of the same height and are used for right bending processing of the pipe 218. The main clamp clamping driving mechanism, the guide clamp transverse driving mechanism, the auxiliary pushing driving mechanism, the main shaft driving mechanism, the die-changing left and right driving mechanism, the die-changing lift driving mechanism, the feeding driving mechanism, and the pipe corner mechanism are all driven by servo motors. The pipe 218 can be conveyed between the main clamps and the die under the conveyance of the feeding trolley 22. After the main clamps move inward under the drive of the main clamp clamping driving mechanism, they can clamp the pipe 218 with the die. The guide clamps can be abutted against the outer side of the rear part of the pipe 218 to be bent under the drive of the guide clamp transverse driving mechanism. After the main shaft 26 rotates under the drive of the main shaft driving mechanism, the main clamps can rotate with the die under the drive of the swing arm 27 to perform pipe bending processing on the clamped pipe 218. The guide clamps can move forward together with the pipe 218 during the pipe bending processing under the drive of the auxiliary pushing driving mechanism.The left-bending main clamp 216 and the right-bending main clamp 217 can move back and forth under the drive of the main clamp die-changing mechanism to change the die. When performing left-bending processing, the left-bending main clamp 216 can be aligned left and right with the left-bending wheel die 28 to cooperate with pipe bending, and the right-bending main clamp 217 cannot be aligned left and right with the right-bending wheel die 29. When performing right-bending processing, the right-bending main clamp 217 can be aligned left and right with the right-bending wheel die 29 to cooperate with pipe bending, and the left-bending main clamp 216 cannot be aligned left and right with the left-bending wheel die 28. After the two groups of corresponding guide clamps, main clamps, and wheel dies are lowered under the drive of the die-changing lifting drive mechanism, they can avoid the pipe 218 to be bent, so that the two groups of corresponding guide clamps, main clamps, and wheel dies can change the die. The two groups of corresponding guide clamps, main clamps, and wheel dies can switch heights through the die-changing lifting drive mechanism and be respectively at the same height as the pipe 218. Only after being at the same height as the pipe 218 can the pipe 18 be bent. After the two wheel dies move left and right under the drive of the die-changing left-right drive mechanism, they can change the die. After the two guide clamps move left and right under the drive of the guide clamp transverse drive mechanism, they can change the die. After the two main clamps swing left and right under the drive of the swing arm 27, they can change the die. When performing left-bending processing, the left-bending wheel die 28 can be pre-moved to the left side of the pipe 218, the left-bending guide clamp 212 can be pre-moved to the right side of the pipe 218 and be opposite to the pipe 218, and the left-bending main clamp 216 can be pre-swinged to the right side of the pipe 218. When performing right-bending processing, the right-bending wheel die 29 can be pre-moved to the right side of the pipe 218, the right-bending guide clamp 213 can be pre-moved to the left side of the pipe 218 and be opposite to the pipe 218, and the right-bending main clamp 217 can be pre-swinged to the left side of the pipe 218.,

[0023] After the pipe feeding device 1 transfers the pipe to the front of the double-direction pipe bender 2, the pipe clamping mechanism on the double-direction pipe bender 2 moves forward under the drive of the feeding trolley 22, so that one end of the pipe can be inserted into the pipe clamping mechanism, and then the pipe is clamped by the pipe clamping mechanism.

[0024] In this embodiment, the feeding trolley 22, the lifting seat 23, the pipe bending seat 24, the auxiliary pushing table 210, the guide clamp transverse movement table 25, the main clamp translation table 214, and the main clamp installation table 215 are all installed through linear guide rails.

[0025] The feeding drive mechanism uses a gear and a rack to drive the feeding trolley 22, and the gear is driven to rotate by a servo motor.

[0026] The pipe clamping mechanism uses a common multi-petal pipe clamp. The clamping claws at the front end of the multi-petal pipe clamp are composed of multiple split part clamping claws. In the natural state, the split part clamping claws all open outwards at the same time. A main shaft sleeve is sleeved outside each split part clamping claw. After the main shaft sleeve moves forward, it can make the split part clamping claws approach each other to clamp the pipe.

[0027] The pipe rotation angle mechanism uses a servo motor to drive the pipe clamping mechanism to rotate the pipe by an angle through a synchronous belt pulley.

[0028] The die change lifting drive mechanism uses a gear and a rack to drive the lifting seat 23, and the gear is driven to rotate by a servo motor.

[0029] The die change left - right drive mechanism uses a lead screw - nut pair to drive the elbow seat 24, and the lead screw is driven to rotate by a servo motor.

[0030] The main clamp clamping drive mechanism uses a lead screw - nut pair to drive the main clamp translation table 214, and the lead screw is driven to rotate by a servo motor.

[0031] The guide clamp lateral drive mechanism uses a gear and a rack to drive the guide clamp transverse movement table 25, and the gear is driven to rotate by a servo motor.

[0032] The auxiliary push drive mechanism uses a lead screw - nut pair to drive the auxiliary push table 210, and the lead screw is driven to rotate by a servo motor.

[0033] The main shaft drive mechanism is a servo reduction motor.

[0034] In this embodiment, the right - bent main clamp 217 is higher than the left - bent main clamp 216, and such a setting can make the layout more reasonable. The lifting seat 23 is assisted in lifting by a cylinder, which can reduce the power of the corresponding servo motor. The main clamp die change mechanism is a cylinder. There are two guide blocks 219 arranged left - right on the front end of the machine table 21. The two guide blocks 219 can approach or move away from each other under the action of two cylinders. A guide wheel 220 is respectively arranged on the opposite side surfaces of the two guide blocks 219. After the two guide blocks 219 approach each other, the two guide wheels 220 can clamp on the outer side of the pipe 218, and at this time, the two guide wheels 220 can guide the forward - backward movement of the pipe 218.

[0035] In this embodiment, the two holding seats 12 are respectively installed on the stock rack 11 through a guide rail 110. The guide rail 110 is fixed on the stock rack 11, and the holding seat 12 is installed on the guide rail 110. The holding seat 12 can slide left - right on the corresponding guide rail 110. A locking screw is arranged on the holding seat 12. After the locking screw is screwed in, it can abut against the guide rail 110, so that the holding seat 12 can be fixed to the guide rail 110 and cannot slide. After such a setting, the distance between the two holding seats 12 can be adjusted according to the pipes of different lengths.

[0036] A storage bin 111 is provided at the rear of the stock preparation rack 11. The pipes to be bent can be placed in the storage bin 111 in a left - right direction. The bottom of the storage bin 111 is arranged to slope downward from the rear to the front. A loading channel 112 is provided between the storage bin 111 and the two supporting plates 13. A loading landslide 113 is provided between the loading channel 112 and the two supporting plates 13. The loading channel 112 and the loading landslide 113 are arranged to slope downward from the rear to the front. The height of the loading channel 112 only allows the pipes to pass through in a single - row arrangement. At the front bottom of the storage bin 111, there is a lifting platform 114 driven by a cylinder to move up and down. After the lifting platform 114 rises, it can pass through the bottom of the storage bin 111 to lift a pipe in the storage bin 111. The width of the lifting platform 114 only allows one pipe to be lifted each time. The top of the lifting platform 114 is arranged to slope forward, so that the lifted pipe can lean forward against the front wall of the storage bin 111 when rising. The pipe can be lifted by the lifting platform 114 to the entrance of the loading channel 112. At this time, the pipe can roll into the loading channel 112. A lifting channel 115 is provided between the loading landslide 113 and the outlet of the loading channel 112. The width of the lifting channel 115 only allows one pipe to be lifted. At the bottom of the lifting channel 115, there is a loading table 116 driven by a cylinder to move up and down. After the loading table 116 rises, it can lift the first pipe rolling out of the loading channel 112. The top of the loading table 116 is arranged to slope forward, so that the lifted pipe can lean forward against the back side wall of the loading landslide 113 when rising. The pipe can be lifted by the loading table 116 to the top of the loading landslide 113. At this time, the pipe can roll onto the loading landslide 113 and can roll through the loading landslide 113 into the positioning grooves 16 on the two supporting plates 13. After such a setting, it can be ensured that the pipes are conveyed to the two supporting plates 13 one by one.

[0037] The height of the loading channel 112 is limited by an upper limit plate 117. The height and the front - rear position of the upper limit plate 117 are adjustable. The upper limit plate 117 can be fixed by cooperating with screws and long - slot holes, so that the height and the front - rear position of the upper limit plate 117 are adjustable. The clamping cylinder 15 is arranged inside the corresponding clamping plate 14. After such a setting, the layout of the device can be made more reasonable.

Claims

1. Automobile headrest pipe rack production line, characterized by: include: A pipe bending feeding device, a two-way pipe bending machine, a transfer manipulator, and a vertical gear drawing machine. The pipe bending feeding device is located on one side in front of the two-way pipe bending machine, the vertical gear drawing machine is located on the other side in front of the two-way pipe bending machine, and the transfer manipulator is located in front of the two-way pipe bending machine. The pipe bending feeding device can transfer the pipe to the front of the two-way pipe bending machine for the two-way pipe bending machine to clamp it. The two-way pipe bending machine can bend the pipe into a car headrest pipe rack. The transfer manipulator can transfer the car headrest pipe rack to the vertical gear drawing machine. The vertical gear drawing machine can perform gear drawing on the car headrest pipe rack. The structure of the vertical gear broaching machine includes: a machine base, on which a gantry, a mold base, an upper drive plate, and a lower drive plate are arranged. The upper drive plate is located above the mold base, and the lower drive plate is located below the mold base. An upper clamp and a lower clamp are arranged between the upper drive plate and the mold base. The upper clamp is fixed to the upper drive plate, and the lower clamp is fixed to the mold base. A feeding gap is left between the lower clamp and the upper clamp to allow the two ends of the automobile headrest pipe rack to be inserted between them. A push cylinder is arranged in front of the mold base, and a backing plate is arranged behind the mold base. The push cylinder can move backward. The automobile headrest pipe frame inserted between the lower clamping die and the upper clamping die is pushed and inserted so that the automobile headrest pipe frame can be positioned forward and backward by being pressed against the backing plate. Several guide rods passing through the mold base and the machine base are arranged between the upper driving plate and the lower driving plate. The two ends of the guide rods are respectively fixed to the upper driving plate and the lower driving plate. A lifting cylinder is arranged on the lower driving plate. The cylinder body of the lifting cylinder is fixed to the lower driving plate. The top of the piston rod of the lifting cylinder is fixed to the machine base. After the lifting cylinder is extended and retracted, it can drive the upper driving plate to rise and fall through the lower driving plate, so that the upper clamping die can move downward and clamp the lower clamping die. The automobile headrest pipe frame is provided with several clamping holes and a tooth-drawing hole between the lower clamping die and the upper clamping die. The upper half of each clamping hole and the tooth-drawing hole is provided on the upper clamping die, and the lower half of each clamping hole and the tooth-drawing hole is provided on the lower clamping die. When the two clamping dies are clamped, the upper half and the lower half of the clamping holes and the tooth-drawing holes can be put together. During processing, one end of the automobile headrest pipe frame to be toothed is inserted into and clamped in the tooth-drawing hole, and the other end of the automobile headrest pipe frame is inserted into and clamped in a clamping hole. Vertical The mold through holes are arranged, and each mold through hole is connected up and down. A lifting mold frame located above the mold base and a first servo electric cylinder that can drive the lifting mold frame to lift are arranged on the gantry. A tooth drawing die base that can slide left and right and a second servo electric cylinder that can drive the tooth drawing die base to move left and right are arranged on the lifting mold frame. A tooth drawing die is installed on the bottom side of the tooth drawing die base. After the lifting mold frame is lifted, the tooth drawing die can pass through each mold through hole to perform tooth drawing processing on the side of one end of the fixed automobile headrest pipe frame. After the tooth drawing die base moves left and right, the tooth drawing depth of the tooth drawing die can be adjusted.

2. The automobile headrest pipe rack production line according to claim 1 is characterized in that: The structure of the bidirectional pipe bending machine includes: a machine platform, on which a feeding trolley capable of sliding forward and backward and a feeding driving mechanism for driving the feeding trolley to slide forward and backward for feeding are arranged, a pipe clamping mechanism for clamping the pipe and a pipe corner mechanism for driving the pipe to rotate, which can cooperate with the pipe clamping mechanism, are arranged on the feeding trolley; a lifting seat capable of lifting and lowering and a die-changing lifting driving mechanism for driving the lifting seat to lift and lower are arranged on the end of the machine platform in front of the feeding trolley; a pipe bending seat capable of sliding left and right and a die-changing left and right driving mechanism for driving the pipe bending seat to slide left and right are arranged on the lifting seat; a guide clamp transverse moving platform capable of sliding left and right, a guide clamp transverse driving mechanism for driving the guide clamp transverse moving platform to slide left and right, a vertically arranged rotatable main shaft, and a driving mechanism for driving the lifting seat to lift and lower are arranged on the lifting seat. The main shaft drives the mechanism and the rotating arm when the main shaft rotates. The rotating arm is fixed to the main shaft so that the rotating arm can be driven to swing horizontally left and right after the main shaft rotates. A left bending wheel mold and a right bending wheel mold stacked up and down are fixed on the top of the main shaft. An auxiliary push platform that can slide back and forth and an auxiliary push driving mechanism for driving the auxiliary push platform to slide back and forth are arranged on the guide clamp transverse movement platform. A guide clamp mounting seat is arranged on the auxiliary push platform. The left bending guide clamp and the right bending guide clamp arranged up and down are respectively arranged on the left and right sides of the guide clamp mounting seat. A main clamp translation platform that can slide inward and outward along the rotating arm and a main clamp clamping driving mechanism for driving the main clamp translation platform to slide inward and outward are arranged on the rotating arm. A main clamp mounting platform that can slide back and forth and a main clamp mold changing mechanism for driving the main clamp mounting platform to slide back and forth are arranged on the main clamp mounting platform. There are left-bend main clamps and right-bend main clamps which are arranged up and down and staggered front and back. The main clamps and the wheel die are located in front of the guide clamps. The left-bend main clamps, the left-bend guide clamps and the left-bend wheel die are of the same height and are used for left-bend processing of the pipe. The right-bend main clamps, the right-bend guide clamps and the right-bend wheel die are of the same height and are used for right-bend processing of the pipe. The main clamp clamping drive mechanism, the guide clamp transverse drive mechanism, the auxiliary push drive mechanism, the spindle drive mechanism, the mold changing left and right drive mechanism, the mold changing lifting drive mechanism, the feeding drive mechanism and the pipe corner turning mechanism are all driven by servo motors. The pipe can be transported between the main clamps and the wheel die by the feeding trolley. The main clamp can move inwards under the drive of the main clamp clamping drive mechanism and can clamp the pipe with the wheel die. The guide clamp can be attached to the pipe to be bent under the drive of the guide clamp transverse drive mechanism. On the outer rear part, after the spindle rotates under the drive of the spindle driving mechanism, the main clamp can rotate together with the wheel die under the drive of the rotating arm to bend the clamped pipe, and the guide clamp can move forward with the pipe during the bending process under the drive of the auxiliary push driving mechanism. The left-bending main clamp and the right-bending main clamp can move forward and backward under the drive of the main clamp die-changing mechanism to change the die, so that during the left-bending process, the left-bending main clamp can be aligned with the left-bending wheel die to match the bending pipe, and the right-bending main clamp can not be aligned with the right-bending wheel die. During the right-bending process, the right-bending main clamp can be aligned with the right-bending wheel die to match the bending pipe, and the left-bending main clamp can not be aligned with the left-bending wheel die. After the two sets of corresponding guide clamps, main clamps, and wheel dies are driven by the die-changing lifting and lowering driving mechanism to descend, they can avoid the pipe to be bent.The two groups of corresponding guide clamps, main clamps and wheel dies can be changed. The two groups of corresponding guide clamps, main clamps and wheel dies can be switched to the same height as the pipe through the height switching of the mold lifting and lowering driving mechanism. The two wheel dies can be changed after being driven by the left and right driving mechanism of the mold change. The two guide clamps can be changed after being driven by the guide clamp transverse driving mechanism. The two main clamps can be changed after being driven by the rotating arm to swing left and right. When processing the left bend, the left bend wheel die can be moved to the left side of the pipe in advance, the left bend guide clamp can be moved to the right side of the pipe in advance and opposite to the pipe, and the left bend main clamp can be swung to the right side of the pipe in advance. When processing the right bend, the right bend wheel die can be moved to the right side of the pipe in advance, the right bend guide clamp can be moved to the left side of the pipe in advance and opposite to the pipe, and the right bend main clamp can be swung to the left side of the pipe in advance.

3. The automobile headrest pipe rack production line according to claim 2 is characterized in that: The lifting seat is assisted by a cylinder.

4. The automobile headrest pipe rack production line according to claim 2 is characterized in that: The main clamping mold changing mechanism is a cylinder.

5. The automobile headrest pipe rack production line according to claim 2 is characterized in that: Two guide blocks arranged on the left and right are provided on the front end of the machine. The two guide blocks can approach or move away from each other under the action of two cylinders. A guide wheel is provided on the opposite sides of the two guide blocks respectively. When the two guide blocks are close to each other, the two guide wheels can be clamped on the outside of the pipe, so that the two guide wheels can guide the forward and backward movement of the pipe.

6. The automobile headrest pipe rack production line according to claim 1 is characterized in that: The structure of the bent pipe feeding device includes: a feeding rack, on which are arranged two supporting seats arranged side by side and at intervals, the two supporting seats are respectively provided with a supporting plate, a clamping plate, and a clamping cylinder for driving the clamping plate to move left and right, the two supporting plates are located between the two clamping plates, the two supporting plates are arranged side by side and at intervals, the two clamping plates are arranged side by side and at intervals, the two clamping plates can move toward each other under the drive of their respective clamping cylinders, and positioning grooves are respectively provided on the two supporting plates, the two supporting plates are used to support the pipe, and when the pipe is transported to the two supporting plates, the pipe can be respectively inserted into the two positioning grooves at its two ends for front and back positioning, and rotatable turntables are respectively provided on the inner sides of the two clamping plates, the two turntables are arranged opposite to each other left and right, and the two turntables can clamp the pipes located on the two supporting plates left and right after moving toward each other under the drive of their respective clamping plates, and the two ends of the pipe can be respectively located at the center of the two turntables during clamping, and the pipes on one clamping plate can be clamped at the center of the two turntables ... A rotating servo motor for driving the turntable on the clamping plate to rotate is arranged on the outer side. After the two turntables rotate, they can rotate with the clamped pipes. A weld detection sensor is arranged on a supporting seat. When the pipe is rotated by the two turntables, the weld on it can pass in front of the weld detection sensor and be detected by the weld detection sensor. A transfer rack is arranged on the top of the loading rack, and a transfer seat that can slide back and forth and a transfer driving mechanism that can drive the transfer seat to slide back and forth are arranged on the transfer rack. A grasping seat that can be raised and lowered and a grasping and lifting mechanism that can drive the grasping seat to be raised and lowered are arranged on the transfer seat. Pneumatic fingers for grasping the pipes are arranged at the bottom of the grasping seat. After the pneumatic fingers move downward under the drive of the grasping and lifting mechanism, the pneumatic fingers can grasp the pipes supported on the two supporting plates. After the grasped pipes move forward under the drive of the transfer driving mechanism, the pipes can be transferred to the front of the bidirectional pipe bending machine, so that the pipes can be clamped by the bidirectional pipe bending machine for bending.

7. The automobile headrest pipe rack production line according to claim 6 is characterized in that: The two supporting seats are respectively installed on the loading rack through a guide rail, the guide rail is fixed on the loading rack, and the supporting seats are installed on the guide rail. The supporting seats can slide left and right on the corresponding guide rails. The supporting seats are provided with locking screws. After the locking screws are screwed in, they can be pressed against the guide rails, so that the supporting seats can be fixed to the guide rails and cannot slide.

8. The automobile headrest pipe rack production line according to claim 6 is characterized in that: A silo is provided on the rear part of the loading rack, and the pipes to be bent can be placed in the silo in a left-right direction. The bottom of the silo is arranged to be tilted downward from the back to the front, and a loading channel is provided between the silo and the two supporting plates. A loading slide is provided between the loading channel and the two supporting plates. The loading channel and the loading slide are arranged to be tilted downward from the back to the front. The height of the loading channel only allows the pipes to pass through one by one. A lifting platform driven by a cylinder to rise and fall is provided at the front bottom of the silo. After the lifting platform rises, it can pass through the bottom of the silo to lift a pipe in the silo. The width of the lifting platform only allows one pipe to be lifted at a time. The top of the lifting platform is arranged to be tilted forward so that the lifted pipe can be pressed forward against the lifting platform when it rises. On the front wall of the silo, the pipe can be lifted by the lifting platform to the entrance of the loading channel, and then the pipe can roll into the loading channel. A lifting channel is arranged between the loading slope and the exit of the loading channel. The width of the lifting channel only allows one pipe to be lifted. A loading platform driven by a cylinder is arranged at the bottom of the lifting channel. After the loading platform rises, it can lift the first pipe rolling out of the loading channel. The top of the loading platform is tilted forward so that the lifted pipe can lean forward against the back side wall of the loading slope when it rises. The pipe can be lifted by the loading platform to the top of the loading slope, and then the pipe can roll onto the loading slope and can roll into the positioning grooves on the two supporting plates through the loading slope.

9. The automobile headrest pipe rack production line according to claim 8, characterized in that: The height of the feeding channel is limited by the upper limit plate, and the height and front and rear position of the upper limit plate are adjustable.

10. The automobile headrest pipe rack production line according to claim 6, characterized in that: The clamping cylinder is arranged on the inner side of the corresponding clamping plate.

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