SU1524957A1 - Pipe-bending complex - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to pipe bending production. The purpose of the invention is to increase productivity by reducing the length of the pauses between product manufacturing cycles. The pipe bending complex includes a pipe bending machine, a device (U) 2 loading blanks and unloading products and a pipe billet shop 3. U 2 consists of a longitudinal movement drive cylinder (PC) 29 mounted on a carriage (K) 26 in bearings with the possibility of limited rotation. On the outside, PC 29 is installed perpendicularly to the axis of the longitudinal movement at an angle to one another the loading cylinders 37 and unloading 39 U 2. The rods of the said cylinders have grips 38 and 40, respectively. On K 26, cylinders 33 of limited rotation are rigidly fixed perpendicular to the axis of the longitudinal movement. A common plunger 34 of the limited rotation cylinders 33 interacts with a gear wheel 42 formed on the housing of the PC 29. At 2, the billet is simultaneously fed from the magazine to the bending and removing position of the finished product to the receiving conveyor 47 for storage. The invention allows an increase in productivity by 5-7%. 2 hp ff, 3 ill.

Description

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The invention relates to mechanical engineering and, in particular, to pipe bending production.

The purpose of the invention is to increase productivity by reducing the length of the pause between production cycles of the forest, as well as increasing the durability of the workpiece loading device and unloading products.

FIG. I depicts a general view of the pipe bending complex, the plan; in fig. 2 is a view A of FIG. one; in fig. 3 is a view B in FIG. 2

The pipe bending complex is a unit consisting of individual working units: a pipe bending machine, a device 2 for loading workpieces and unloading products, a shop for pipe workpieces 3, interconnected by a common control system (preferably a CNC system).

The pipe bending machine has a bed 4, on which is placed a flexible clamping head 5 with a bend mechanism, the drive of which is made in the form of hydraulic cylinders 6 and 7, the rods of which are connected by a roller-roller chain 8 sitting on an asterisk 9. Hydraulic cylinders 10 and 11 interact slider rails 12 and 13 with a gear wheel 14 and communicate a reciprocating rotational movement of the bending template 15 provided with the drive of the connector 16. The bending of the billet is carried out on the mandrel 17, on which the pipe is fitted and which has its own drive 18, mounted on the bed 4. The pipe is clamped in the collet chuck 19, which, with its rotational drive 20, is placed on the carriage 21, which has the possibility of linear supply,: 1 by shifting under the action of the actuator 22 along the rack rail 23. To clamp the pipe to bending P1 template are the mechanisms of the clamp 24 and the clamp 25 support.

The device for loading workpieces and unloading products is located at the end of the pipe bending machine on the side of its bending head and has the ability to reciprocate in the direction coinciding with the longitudinal axis of the pipe bending table and limited rotation in a plane perpendicular to the longitudinal axis. It is a carriage 26, the wheels of which 27 are moved along the guides 28 under the action of the driving cylinder 29 of longitudinal movement with the rod 30 mounted in the radial-stop bearing 31. The bearing 31 is mounted in a bracket 32 fixed to the guide bearing 28. The limited rotation drive hydraulic 33 with the rail plunger 34 is mounted in the eyes of the carriage 26, on which the body of the drive qi, longitudinal movement pindra 29, bearing a row of cylinders 37 of the loading with grippers 38 and unloading cylinders 39 with grippers 40. Loading and unloading cylinders are pairwise interconnected by stiffening ribs 41 and have the possibility of limited rotation at a predetermined angle determined by the amount of movement of the plunger rack 34 engaged with the gear wheel 42, which is made on the outer surface Qi Pinder 29. (In a constructive version, providing interchangeable templates with different bending radii, the swing axis can be provided with guides 28 while adjusting the angle and radius of the bend tubing pipe in grippers).

The billet shop 3 has a billet distribution rack, along which billets are placed up to the latches 43. The workpiece contacting with the latches 43 is cut off from the subsequent cutters 44, interconnected with each other with the possibility of movement from the drive 45. The workpiece is fed to the receiving brackets 46 secured to the edge of the rack of the blank magazine. (The brackets can be replaced with rollers rotatably mounted to adjust the position in the position of the workpiece with the stop to obtain a constant, minimum necessary clearance between the end of the workpiece in the bending position and the head of the mandrel 17). In the storage position, the bent pipe is transmitted to a receiving transport device 47.

Pipe bending complex works as follows.

The device for loading workpieces and unloading products in the initial, left position (withdrawn from the bending head in the longitudinal direction with open grippers 38) captures the pipe billet located on the receiving brackets 46, grippers 38 and when the hydraulic cylinder 33 is actuated with the piston rod 34 moving the left position transfers the workpiece to the bending position. By longitudinal movement of the device for loading parts and unloading products, the workpiece is fed to the mandrel 17 and clamped in the collet chuck 19. The grippers 38, opening, release the Preparations and she carriage 21 by actuator 22 is provided to the first bending position.

The workpiece is clamped by a clamping mechanism 24, which is rigidly fixed to the bending head 5. Simultaneously, the support is pressed by the pressing mechanism 25, and the loading-unloading device by the rocking motion.m moves to a position at which the grippers. The loadings 38 are located in the position of the workpiece output, and the grips unloading 40 - in the position are flexible. By turning the clamping mechanism 24 under the action of the hydraulic cylinder 6, using the stub-roller chain 8, which sits on the sprocket 9,

The bending of the pipe is performed. After the bending is completed, the mandrel 17 is pulled out with the help of the actuator 18. The clamping mechanism 24 releases the pipe, is released from fixation with the bending clamping head 5, and returns to its original position using the hydraulic cylinder 7. The pressing mechanism 25 retracts the support, and the bending template 15 is opened with the help of a cylinder 16. Bending clamp

longitudinal movement with just one device; by one continuous swinging movement of the same device, feed the pipe from the blank shop to the bending axis of the machine and simultaneously transfer the product to the storage position without an intermediate stop of the mechanisms. In addition, the reliability of operation of the pipe bending machine increases due to the fixed transfer of finished products to the position of warehouse 5 returns to its original position without sliding; productivity is increased by reducing the length of the pause between manufacturing cycles; the shortest stroke of the drive is pulled out of the mandrel; and also improves the durability of the loading-unloading device, reducing wear.

Claims (3)

Claims I. Pipe bending complex, including driven by a hydraulic cylinder 10, the plunger rail 12 of which is in engagement with the gear wheel 14. By carriage 21, the pipe blank is fed to the position of the second bend. In the case of the second bending at an angle relative to the first, the pipe is rotated, clamped in the collet chuck 19 by the actuator 20. The detachable template 15 is closed and the mandrel 17 is fed to the front position. Trumpet is clamped by the mechanism 24, the support is podzhi-20 pipe bending machine with a drive is supported by the mechanism 25 and the operation is flexible repeats. The last bend ends by pulling out the mandrel 17, releasing it from fixation and returning the clamping mechanism 24 to its original position, retraction of the support by the pressing mechanism 25, connector of the template 15 and pushing the pipe out of the template stream by moving the carriage 21. Pushed out by the carriage 21 bent pipe koi, billet shop, billet loading and unloading device containing appropriate cylinders with grippers and driving a longitudinal movement of the trolley, 25 characterized in that, in order to increase productivity by reducing the duration of pauses between product manufacturing cycles, the billet loading and unloading device is equipped the drive of the limited rotation of the cylinder body is clamped in the grips 40 of the discharge from the oso-30 water of the longitudinal movement of the trolley, from the chuck in the chuck 19 and moves to the left position under the action of the longitudinal movement actuator 29. When the loading and unloading device is stopped in the left position of the gripper, the loading and unloading cylinders with grips are rigidly fixed on the body at an angle to one another. 2. The complex according to claim 1, characterized in that the actuator of the restricted rotation with the eases 38 captures the next billet 35 of foams in the form of a peri placed on the carriage when rocking moves to the bending position, while the finished product is released by the grippers 40 and gets to the receiving transport device 47 . The second and subsequent cycles of operation of the complex begin by putting the workpiece on the mandrel 17 when moving the loading / unloading device under the action of the actuator 29. The proposed pipe bending complex allows you to put the pipe billet on the mandrel and remove the bent pipe from the mandrel longitudinal movement with just one device; by one continuous swinging movement of the same device, feed the pipe from the blank shop to the bending axis of the machine and simultaneously transfer the product to the storage position without an intermediate stop of the mechanisms. In addition, the reliability of operation of the pipe bending machine is increased due to the fixed transfer of finished products to the non-slip storage position; productivity is increased by reducing the length of the pause between manufacturing cycles; the shortest stroke of the drive is pulled out of the mandrel; and also improves the durability of the loading-unloading device, reducing wear. koi, a blank shop, a device for loading blanks and unloading products, containing appropriate cylinders with grippers and driving a longitudinal movement of the trolley, 5 characterized in that, in order to increase productivity by reducing the duration of pauses between product manufacturing cycles, the device for loading blanks and unloading products is equipped drive limited rotation of the cylinder body with the loading and unloading cylinders with clamps rigidly mounted on the housing at an angle to one another. 2. The complex according to claim 1, characterized in that the limited rotation drive is O The axis of the cylinder of the longitudinal movement drive cylinder is two-way operated by the cylinder, the rod of which is kinematically connected with the pinion gear with the cylinder body of the longitudinal movement drive. 3. A complex according to claim I, characterized in that, in order to increase the durability of its work of loading workpieces and unloading products, the end of the drive rod of the longitudinal drive 5 of the bogie in the device for loading workpieces and unloading products is mounted in an angular contact bearing. 47 1C 5 8 n 10 6   I / / f Js 46 5S 4i Bud 6 Fi.e 21 n 9 10 18 1