Numerical control full-automatic bidirectional pipe bending machine

Abstract

A feeding trolley and a feeding driving mechanism are arranged on a machine table, a pipe clamping mechanism and a pipe turning mechanism are arranged on the feeding trolley, a lifting seat and a die changing lifting driving mechanism are arranged on the front portion of the machine table, and a pipe bending seat and a die changing left-right driving mechanism are arranged on the lifting seat. A guide clamp transverse moving table, a guide clamp transverse driving mechanism, a main shaft, a main shaft driving mechanism and a rotating arm are arranged on the pipe bending base, the rotating arm is fixed to the main shaft, a left bending wheel die and a right bending wheel die are arranged at the top of the main shaft, an auxiliary pushing table and an auxiliary pushing driving mechanism are arranged on the guide clamp transverse moving table, a guide clamp mounting base is arranged on the auxiliary pushing table, and a left bending guide clamp and a right bending guide clamp are arranged on the two sides of the guide clamp mounting base respectively. A main clamp translation table and a main clamp clamping driving mechanism are arranged on the rotating arm, a main clamp mounting table and a main clamp die changing mechanism are arranged on the main clamp translation table, and a left bent main clamp and a right bent main clamp are arranged on the main clamp mounting table. The two-way pipe bending machine can bend in the left direction and the right direction, and the bending precision of pipes can be greatly improved.

Description

Technical Field

[0001] The utility model relates to a pipe bender, in particular to a numerically controlled fully automatic two-way pipe bender. Background Art

[0002] Existing pipe benders are all one-way pipe benders. One-way pipe benders can only bend pipes to the left or to the right. When it comes to two-way bent pipe fittings such as automotive headrest pipe racks, which need to be bent to the left and to the right and have multiple elbows, such pipe fittings cannot be bent in one clamping on a single one-way pipe bender. Instead, such pipe fittings need to be clamped multiple times on pipe benders with different bending directions and bent multiple times, which results in low production efficiency and low bending accuracy of such pipe fittings. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a numerically controlled fully automatic two-way pipe bender that can bend to the left and to the right and has high bending accuracy.

[0004] To solve the above problems, the technical solution adopted by the present utility model is as follows: a numerically controlled fully automatic two-way pipe bender, comprising: a machine table, on which 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 are arranged; on the feeding trolley, a pipe clamping mechanism for clamping the pipe and a pipe cornering mechanism capable of cooperating with the pipe clamping mechanism for driving the pipe to rotate are arranged. It is characterized in that: on the end of the machine table in front of the feeding trolley, a lifting seat capable of lifting and a die-changing lifting driving mechanism for driving the lifting seat to lift are arranged; on the lifting seat, a pipe bending seat capable of sliding left and right and a die-changing left-right driving mechanism for driving the pipe bending seat to slide left and right are arranged; on the pipe bending seat, 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 are arranged. 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. On the top of the main shaft, a left bending wheel die and a right bending wheel die stacked up and down are fixed. On the guide clamp transverse moving table, 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 are arranged. On the auxiliary pushing table, a guide clamp mounting seat is arranged. 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. On the rotating arm, 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 are arranged. On the main clamp translation table, 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 are arranged. On the main clamp mounting table, a left bending main clamp and a right bending main clamp arranged up and down and staggered front and back are arranged. 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 lifting 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 lean against 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 pipe bending processing on the clamped pipe. The guide clamps can move forward together with the pipe during pipe bending processing under the drive of the auxiliary pushing driving mechanism. The left bending main clamp and the right bending main clamp can move back and forth under the drive of the main clamp die-changing mechanism to change the die, so that when performing left bending processing, the left bending main clamp can be aligned left and right with the left bending wheel die to cooperate with pipe bending, and the right bending main clamp cannot be aligned left and right with the right bending wheel die. When performing right bending processing, the right bending main clamp can be aligned left and right with the right bending wheel die to cooperate with pipe bending, and the left bending main clamp cannot 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, so that the two sets of corresponding guide clamps, main clamps, and wheel dies can change the die. The two sets of corresponding guide clamps, main clamps, and wheel dies can be switched in height through the die-changing lifting drive mechanism to be level with the pipe respectively. After the two wheel dies are moved left and right under the drive of the die-changing left and right drive mechanism, they can change the die. After the two guide clamps are moved 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 bending to the left, 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-swinged to the right side of the pipe. When bending to the right, 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-swinged to the left side of the pipe.,

[0005] Further, for the aforementioned numerically controlled fully automatic two-way pipe bender, wherein: the right bending main clamp is higher than the left bending main clamp.

[0006] Further, for the aforementioned numerically controlled fully automatic two-way pipe bender, wherein: the lifting seat is assisted in lifting by a cylinder.

[0007] Further, for the aforementioned numerically controlled fully automatic two-way pipe bender, wherein: the main clamp die-changing mechanism is a cylinder.

[0008] Further, for the aforementioned numerically controlled fully automatic two-way pipe bender, 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, so that the two guide wheels can guide the forward and backward movement of the pipe.

[0009] The advantages of the present utility model are as follows: The aforementioned numerically controlled fully automatic two-way pipe bender can bend the pipe to the left and to the right, so that two-way bent pipe fittings can be bent in one clamping, thereby greatly improving the production efficiency of the pipe fittings. In addition, since each drive mechanism is driven by a servo motor, the bending accuracy of the pipe can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the numerically controlled fully automatic two-way pipe bender described in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] The present utility model will be further described in detail below in conjunction with specific embodiments and drawings.

[0012] As Figure 1As shown in the figure, the numerically controlled full-automatic two-way pipe bender includes: a machine table 1, on which a feeding trolley 2 capable of sliding back and forth and a feeding drive mechanism for driving the feeding trolley 2 to slide back and forth for feeding are provided. On the feeding trolley 2, a pipe clamping mechanism for clamping the pipe 18 and a pipe cornering mechanism capable of cooperating with the pipe clamping mechanism to drive the pipe 18 to rotate are provided. At the end of the machine table 1 in front of the feeding trolley 2, a lifting seat 3 capable of lifting and a die-changing lifting drive mechanism for driving the lifting seat 3 to lift are provided. On the lifting seat 3, a pipe bending seat 4 capable of sliding left and right and a die-changing left-right drive mechanism for driving the pipe bending seat 4 to slide left and right are provided. On the pipe bending seat 4, a guide clamp transverse moving table 5 capable of sliding left and right, a guide clamp transverse drive mechanism for driving the guide clamp transverse moving table 5 to slide left and right, a vertically arranged rotatable main shaft 6, a main shaft drive mechanism for driving the main shaft 6 to rotate, and a rotating arm 7 are provided. The rotating arm 7 is fixed to the main shaft 6, so that after the main shaft 6 rotates, it can drive the rotating arm 7 to swing horizontally left and right. At the top of the main shaft 6, a left bending wheel die 8 and a right bending wheel die 9 stacked up and down are fixed. On the guide clamp transverse moving table 5, an auxiliary pushing table 10 capable of sliding back and forth and an auxiliary pushing drive mechanism for driving the auxiliary pushing table 10 to slide back and forth are provided. On the auxiliary pushing table 10, a guide clamp mounting seat 11 is provided. The left bending guide clamp 12 and the right bending guide clamp 13 arranged up and down are respectively arranged on the left and right sides of the guide clamp mounting seat 11. On the rotating arm 7, a main clamp translation table 14 capable of sliding in and out along the rotating arm 7 and a main clamp clamping drive mechanism for driving the main clamp translation table 14 to slide in and out are provided. On the main clamp translation table 14, a main clamp mounting table 15 capable of sliding back and forth and a main clamp die-changing mechanism for driving the main clamp mounting table 15 to slide back and forth are provided. On the main clamp mounting table 15, a left bending main clamp 16 and a right bending main clamp 17 arranged up and down and staggered front and back are provided. The main clamp and the wheel die are located in front of the guide clamp. The left bending main clamp 16, the left bending guide clamp 12, and the left bending wheel die 8 are of the same height and are used for left bending processing of the pipe 18. The right bending main clamp 17, the right bending guide clamp 13, and the right bending wheel die 9 are of the same height and are used for right bending processing of the pipe 18. The main clamp clamping drive mechanism, the guide clamp transverse drive mechanism, the auxiliary pushing drive mechanism, the main shaft drive mechanism, the die-changing left-right drive mechanism, the die-changing lifting drive mechanism, the feeding drive mechanism, and the pipe cornering mechanism are all driven by servo motors. The pipe 18 can be conveyed between the main clamp and the wheel die under the conveyance of the feeding trolley 2. After the main clamp moves inward under the drive of the main clamp clamping drive mechanism, it can clamp the pipe 18 with the wheel die. The guide clamp can lean against the outer side of the rear part of the pipe 18 to be bent under the drive of the guide clamp transverse drive mechanism. After the main shaft 6 rotates under the drive of the main shaft drive mechanism, the main clamp can rotate together with the wheel die under the drive of the rotating arm 7 to perform pipe bending processing on the clamped pipe 18. The guide clamp can move forward together with the pipe 18 during pipe bending processing under the drive of the auxiliary pushing drive mechanism. The left bending main clamp 16 and the right bending main clamp 17 can move back and forth under the drive of the main clamp die-changing mechanism to perform die changing.During left bending, the left bending main clamp 16 can be aligned with the left bending wheel die 8 left and right to cooperate with the pipe bending, and the right bending main clamp 17 cannot be aligned with the right bending wheel die 9 left and right. During right bending, the right bending main clamp 17 can be aligned with the right bending wheel die 9 left and right to cooperate with the pipe bending, and the left bending main clamp 16 cannot be aligned with the left bending wheel die 8 left and right. 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 18 to be bent, so that the two sets of corresponding guide clamps, main clamps, and wheel dies can 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 18. Only after being level with the pipe 18 can the pipe 18 be bent. After the two wheel dies are moved left and right under the drive of the die-changing left and right drive mechanism, the die can be changed. After the two guide clamps are moved left and right under the drive of the guide clamp transverse drive mechanism, the die can be changed. After the two main clamps swing left and right under the drive of the swing arm 7, the die can be changed. During left bending, the left bending wheel die 8 can be pre-moved to the left side of the pipe 18, the left bending guide clamp 12 can be pre-moved to the right side of the pipe 18 and be opposite to the pipe 18, and the left bending main clamp 16 can be pre-swing to the right side of the pipe 18. During right bending, the right bending wheel die 9 can be pre-moved to the right side of the pipe 18, the right bending guide clamp 13 can be pre-moved to the left side of the pipe 18 and be opposite to the pipe 18, and the right bending main clamp 17 can be pre-swing to the left side of the pipe 18.,

[0013] In this embodiment, the feeding trolley 2, the lifting seat 3, the pipe bending seat 4, the auxiliary pushing table 10, the guide clamp transverse moving table 5, the main clamp translation table 14, and the main clamp installation table 15 are all installed through linear guide rails.

[0014] The feeding drive mechanism uses a gear and a rack to drive the feeding trolley 2, and the gear is driven to rotate by a servo motor.

[0015] The pipe clamping mechanism uses a common multi-lobe pipe clamp. The clamping claws at the front end of the multi-lobe 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.

[0016] The pipe cornering mechanism uses a servo motor to drive the pipe clamping mechanism to rotate the pipe by an angle through a synchronous pulley.

[0017] The die-changing lifting drive mechanism uses a gear and a rack to drive the lifting seat 3, and the gear is driven to rotate by a servo motor.

[0018] The die-changing left and right drive mechanism uses a lead screw nut pair to drive the pipe bending seat 4, and the lead screw is driven to rotate by a servo motor.

[0019] The main clamp clamping drive mechanism uses a lead screw nut pair to drive the main clamp translation table 14, and the lead screw is driven to rotate by a servo motor.

[0020] The guide clamp lateral drive mechanism drives the guide clamp transverse table 5 by using a gear and a rack, and the gear is driven to rotate by a servo motor.

[0021] The auxiliary push drive mechanism drives the auxiliary push table 10 by using a lead screw-nut pair, and the lead screw is driven to rotate by a servo motor.

[0022] The main shaft drive mechanism is a servo reduction motor.

[0023] In this embodiment, the right-bending main clamp 17 is higher than the left-bending main clamp 16, and such a setting can make the layout more reasonable. The lifting seat 3 is assisted in lifting by a cylinder, which can reduce the power of the corresponding servo motor. The main clamp die-changing mechanism is a cylinder. Two guide blocks 19 arranged left and right are provided at the front end of the machine table 1. Under the action of two cylinders, the two guide blocks 19 can approach or move away from each other. A guide wheel 20 is respectively provided on the opposite side surfaces of the two guide blocks 19. After the two guide blocks 19 approach each other, the two guide wheels 20 can clamp on the outer side of the pipe 18, and at this time, the two guide wheels 20 can guide the forward and backward movement of the pipe 18.

Claims

1. CNC fully automatic bidirectional pipe bending machine, including: The machine platform is provided with 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; the feeding trolley is provided with 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; the machine platform is characterized in that: a lifting seat capable of lifting and lowering and a mold-changing lifting driving mechanism for driving the lifting seat to lift and lower are provided 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 mold-changing left and right driving mechanism for driving the pipe bending seat to slide left and right are provided 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 mold-changing lifting driving mechanism for driving the main shaft to rotate are provided on the lifting seat. The main shaft driving mechanism and the rotating arm are fixed to the main shaft, so that the main shaft can drive the rotating arm to swing horizontally left and right after rotation. The left and right curved wheel molds 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, and the left curved guide clamp and the right curved 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. The left-bend main clamp and the right-bend main clamp are arranged and staggered front and back, the main clamp and the wheel die are located in front of the guide clamp, the left-bend main clamp, the left-bend guide clamp and the left-bend wheel die are of the same height and are used to perform left-bend processing on the pipe, the right-bend main clamp, the right-bend guide clamp and the right-bend wheel die are of the same height and are used to perform right-bend processing on 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 clamp 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, and the guide clamp can be close to the pipe to be bent under the drive of the guide clamp transverse drive mechanism. On the outer side of the rear part, after the main shaft rotates under the drive of the main shaft 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 when the pipe is bent 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 when the left-bending process is processed, the left-bending main clamp can be aligned with the left-bending wheel die to match the bending of the pipe, and the right-bending main clamp can not be aligned with the right-bending wheel die. When the right-bending process is processed, the right-bending main clamp can be aligned with the right-bending wheel die to match the bending of the 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 drop, 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.

2. The CNC fully automatic bidirectional pipe bending machine according to claim 1 is characterized in that: The right-bend main clamp is higher than the left-bend main clamp.

3. The CNC fully automatic bidirectional pipe bending machine according to claim 1 is characterized in that: The lifting seat is assisted by a cylinder.

4. The CNC fully automatic bidirectional pipe bending machine according to claim 1 is characterized in that: The main clamping mold changing mechanism is a cylinder.

5. The CNC fully automatic bidirectional pipe bending machine according to claim 1 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.

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