SU1134351A1 - Automatic line for manufacturing components of cramp type - Google Patents

Abstract

1. AUTOMATIC LINE FOR MANUFACTURING SCOPE TYPE DETAILS, containing a stack of workpieces installed in a technological sequence, a machine for cutting them, an automatic chamfering machine, machines for successive thread rolling at both ends of the workpiece, a bending device, and interoperative vehicles featuring so that, in order to increase the productivity of the line and simplify its design, the line is equipped with a device installed in front of the chamfering machine for aligning the workpieces along the ends , made in the form of set. Opposed at both ends of the workpiece support and the pusher, and each loading and unloading device of machines for sequential thread rolling at both ends of the workpieces is made in the form of a carriage pivotally mounted on the pneumatic actuator cranks and installed with the workpiece and the workpiece and the inclined puller mounted rotatably in the direction of lifting the carriage from its original position. 2. Lines according to claim 1, characterized in that, in order to expand its technological capabilities, each carriage is loaded (L unloading device of machines for successive thread rolling at both ends of the blanks and the machine itself are equipped with adjustable stops for blanks. OO Ni :: SP

Description

The invention relates to mechanical engineering, in particular to the manufacture of parts such as staples (staples) on automatic lines. A known automatic line for the manufacture of staples-type parts, comprising a stack of workpieces installed in a technological sequence, a machine for cutting them, a machine for chamfering, machines for successively threading at both ends of the workpiece, a bending device and inter-operating vehicles 1. However, the orientation of the workpieces is relatively the axis of the line is carried out by means of a roller conveyor, which in the process of moving the blanks, due to its rounding, rotates them by 90 ° (loading radius coal is determined by the length of the blanks). This method of reorientation requires long transporters, which occupy a large production area. Combining chamfering and threading operations on a single machine without changing machining positions leads to a lengthening of the line stroke, and, consequently, to a decrease in its productivity. In addition, in the well-known automated line, a complex thread rolling machine is used that produces a knurling on a stationary workpiece. The purpose of the invention is to increase the productivity of the line and simplify its design. To achieve this goal, an automatic line for the manufacture of staples, containing a stack of workpieces installed in a technological sequence, a machine for cutting them, a machine for chamfering, machines for successive thread rolling at both ends of the workpiece, a bending device and inter-operating vehicles equipped with in front of the chamfering machine with a device for aligning the workpieces along the ends, made in the form of being set opposite on both ends of the workpiece of the abutment and pushing l, and each loading and unloading device of machine tools for successive thread rolling at both ends of the blanks is made in the form of a carriage pivotally mounted on the pneumatic drive crankshafts and installed with a cutter of workpieces and an inclined puller mounted to rotate in the direction of the carriage rise from its original position In addition, each carriage of the loading and unloading device of machine tools for successive thread rolling at both ends of the workpieces and the machine itself are provided with adjustable stops for the workpieces. FIG. 1 shows a line, a general view; in fig. 2 - the same in terms of; in fig. 3 is a view A of FIG. 2 (loading and unloading device of the left thread rolling machine); in fig. 4 shows a section BB in FIG. 3; in fig. 5 is a view of B in FIG. 2 (bending device); in fig. 6 is a view of FIG. 2 (a device for aligning the workpieces at the ends with a stopping device (without a pusher). The automatic line contains a rack 1, an automatic machine for cutting the workpieces 2, an automatic machine 3 for chamfering, two machines 4 (Fig. 3 and 4) for sequential thread rolling at two ends of the workpiece 5, a bending device 6 (Fig. 5). In the line, the machine 2 for cutting the workpieces is located perpendicular to the axis of the line and the line is equipped with a device 7 for aligning the workpieces along the ends (Figs. 2 and 6) containing a pusher 8 with an air cylinder 9, end stop 10, the cut-off And with the electromagnet This is 12 and tray 13. The chamfering machine 3 is equipped with a chain conveyor 14 (FIGS. 1 and 6) having grippers 15 and a storage tray 16 (FIG. 1) adjacent to the drum 17 with peripheral slots. Each thread rolling machine 4 is provided with a loading and unloading device 18 (FIGS. 2-4) including a carriage 19 pivotally mounted on the cranks 20 of the pneumatic actuator 21 and made with a prismatic bed 22 (FIG. 3) for the workpiece 5 and the clamp 23, as well as a pivotally mounted inclined puller 24 mounted on a bracket 25. The puller is mounted in such a way, h On its end it overlaps the trajectory of movement of the workpiece 5 together with the carriage 19 into the rolling rollers 26, and its rotation from the initial position is possible only upwards - in the direction of raising the carriages to the rolling rollers 26. On the other side of the cradle 22, a slam-shutter 27 is mounted, containing a resetter 28 contacting in the initial position the carriage 19 with one of the cranks 20 through a system of levers 29 and 30, hinged on the bracket 31. The upper part of the bracket 31 is inclined towards the carriage 19 and provided with an abutment 32 for preventing downward movement The workpieces 5 are loaded into the bed 22. A spring 33 is provided to hold the ejector 28 in the initial position. To enable the thread to roll on workpieces of different lengths, the loading and unloading device 18 and the thread rolling machine 4 itself are provided with stops 34 and 35 movably mounted on the brackets 36 and 37 (FIG. four). The bending device 6 (FIG. 5) is mounted horizontally and includes a bending machine 38 having stationary 39 and movable 40 tools, as well as a loading unit 41, made in the form of a chain conveyor 42 with grippers 43. A gravity tray 44 is mounted in the upper part of the conveyor with a cutter 45. At the end of the gravity tray 44, directly above the bending zone 46, a loading unit 47 is mounted, which can be rotated around the axis 48. Induction is mounted under the tray 44 in the immediate vicinity of the accumulated blanks 5 49. The listed automata are installed in the order of the technological cycle and are interconnected by interoperational vehicles containing a drive roller table 50, a serrate conveyor-drive 51 (Fig. 2), a transmitting device 52, a serrate conveyor 53 (Fig. 2) .. Automatic line works as follows. The bars from the rack platform 1 (Fig. 2) are automatically fed by piece on a roller conveyor 50, the drive rollers of which capture the bar and move it into the working space of the machine 2 for cutting blanks. The cut blanks are rolled onto an inclined-mounted device 7 for aligning the blanks at the ends (Figs. 2 and 6), where a certain amount of them accumulates. At the same time, the last billet closes a sensor (not shown), which gives the command to activate the pneumatic cylinder 9, which moves the pusher 8. The pusher 8 moves the workpieces 5 to the end stop 10, while in the pneumatic system the pressure rises and at the command of the pressure relay (not shown) the pusher 8 returns to its original position. Then the electromagnet 12 is turned on, which raises one of the shoulders of the clipper-accumulator 11 and the blanks are rolled into the tray 13. At the same time, the second shoulder of the clipper 11 is lowered, blocking access to the accumulator of non-oriented blanks. After a certain time, the electromagnet 12 is turned off, and the blanks 5 re-enter the orientation zone. From tray 13, the workpieces are individually selected by the conveyor 14 of the chamfering machine with the help of grippers 15 and raised up into the storage tray 16 (Fig. 1), where they pile up in a certain amount. From tray 16, the blanks enter the drum 17, with which they are piece by piece transferred to the chamfering zone. The machined blanks are rolled onto a serrate conveyor-drive 51 (FIG. 2), which moves them to the loading and unloading device 18 of the thread rolling machine 4 to the upper inclined part of the arm 31 until it stops 32. The carriage 19 is in the process of working oscillating movements of the curvature 20 from the original position to the thread rolling machine 4 and back. When the carriage 19 returns to its original position, the crank 20 presses the lever 30. At this, the ejector 28, driven by a system of levers 29 and 30, drops one workpiece onto the carriage bed 22 of the carriage 19. When the carriage 19 moves to the thread rolling machine 4, the lever 29 is released and the ejector 28 is returned to its original position by the action of the spring 33, and the workpiece is transferred to the working space between the bead rollers 26. At the beginning of the movement, the workpiece 5 lifts one end of the inclined puller 24, which, after passing the workpiece under the action of its own weight returns to its original position and is held in it by the bracket 25. After the thread has been rolled up at one end of the workpiece, the command is given to return the carriage 19 to its original position. The workpiece 5 is moved to the knurling rollers 26 along a circular path. In the section of the workpiece 5, near its initial position, the trajectory of its movement crosses the inclined puller 24, and since it is structurally deprived of the possibility of turning down, the workpiece rolls along the puller to the levers of the transmitting device 52. The transmitting device 52 receives the command to rotate the arms to transfer the workpiece from one loading unloading device to another from the sensor of the initial position of the carriage 19 (not shown). A command is also sent from the same sensor to move the carriage to the thread rolling machine. The feeding of the workpiece into another thread rolling machine 4 for thread rolling at the other end thereof is similar. In order to enable machining of workpieces of different lengths, orienting stops 34 and 35 are installed, with the help of which, during the movement of the workpieces, they are oriented relative to the axis of the line and relative to the rolling rollers 26. To ensure unimpeded passage of the workpieces in areas of their ascent, the stops 34 and 35 are installed on brackets and 37 (Fig. 4) with the ability to move along them in the vertical direction. In order to avoid hanging the ends of the blanks at the time of their contact with the orienting lugs 34 and 35, clamps 23 are installed on the carriage with minimal clamping force. The blanks 5 with the threads rolled at both ends along the puller 24 of the second threading machine 4 roll onto the serrate conveyor 53 (Fig. 2), which accumulates a certain number of blanks and transports them to the bending device 6 (Fig. 2 and 5). The conveyor 42 of the loading unit 41, with its grippers 43, lifts the blanks 5 into the gravity tray 44 to the cutter 45, which is used to single-piece the blanks 5 and feed them to the bending machine 38.

In the gravity tray 44, the blanks are accumulated in a certain amount to create independence in the operation of the conveyor 42 and the bending machine 38, as well as to provide the induction heater 49 with the required number of blanks.

Cut off from the total amount of heated billet along the tray 44 rolls into the loading unit 47, installed at an angle to the gravity tray 44, so that the blanks, having distortions, are trimmed and rolled into the bending zone 46 of the stationary tool 39. The movable tool 40 moves forward when this is the formation of the configuration of the bracket of the desired profile. The bracket is bent, when the movable tool 40 returns to its original position, exits the stationary tool 39 and is removed by a stripper to a discharge conveyor (not shown). The loading unit 47 is rotatable relative to the gravity tray 44 on the axis 48 in order to allow the loading unit 41 to be retooled for producing staples on tools with a different arrangement of the bending zone 46.

This completes the staple loop.

The use of commercially available press-forging equipment as part of a line for all operations, except for chamfering, simplifies the design of the line, significantly shortens the time it takes to be commissioned. Due to the implementation of separate thread rolling and chamfering and sequential thread rolling on two thread rolling machines, as well as through the supply of blanks from above to a horizontal bending device, the design of the line is greatly simplified and its productivity is improved.

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Claims (2)

1. AUTOMATIC LINE FOR MANUFACTURING DETAILS OF SCOPE TYPE, containing a workpiece rack installed in a technological sequence, a machine for cutting them, a machine for chamfering, machines for sequentially rolling threads at both ends of the workpiece, a bending device and interoperational vehicles, characterized in that in order to increase the productivity of the line and simplify its design, the line is equipped with a device installed in front of the beveling machine for leveling the workpieces at the ends, in the form of workpieces of an abutment and a pusher installed opposite on both ends, and each loading and unloading device of machines for sequentially rolling threads at both ends of the workpieces is made in the form of a carriage pivotally mounted on the cranks of the pneumatic drive, and workpieces are cut with the possibility of interaction with it inclined puller mounted with the possibility of rotation in the direction of lifting the carriage from its original position. 2. The line along π. 1, characterized in that, in order to expand its technological capabilities, each carriage of the loading and unloading device of machines for sequentially rolling threads at both ends of the workpieces and the machine itself are equipped with adjustable stops for the workpieces. FIG. 7 SU „, .1134351>