SU984585A1 - Grab-type feeding mechanism to die for binding hook-type chains - Google Patents

Description

(54) GRAPHIC MECHANISM OF SUPPLY TO STAMP FOR KNITTING HOOK CHAINS

one

The invention relates to the means of mechanization and the automation of cold forming and can be used for mixing in the oriented position of flat blanks in sequential dies, mainly dies for assembling flexible hook chains from separate flat links.

Known grabber feed mechanisms are used in sequential machine dies. Such a mechanism consists of two gripping lines fixed on two planks, obtained by moving them in a direction perpendicular to the feed line of the workpieces from four wedges, resulting in the seizure of the workpieces, and the feeding of workpieces by rulers from position to position is carried out at the help of a lever mechanism driven by a press ram.

Closest to the proposed one is a feed mechanism embedded in a stamp containing grapples with grippers connected by means of a traverse to a piston drive rod and located in guide bars with springs and wedges installed in the bottom plate.

stamp with the possibility of reciprocating movement 2.

The disadvantage of these mechanisms is limited technological capabilities. Such mechanisms cannot be used when feeding blanks with variable pitch, as well as when stamping flat relief blanks of various configurations, when in addition to the longitudinal and transverse movement of the grapple rulers, their vertical movement is also needed. It's necessary,

10 for example, when assembling flexible hook chains from separate flat links, because here between the positions of forming the chain link, an increased feed pitch is needed, and at the last position of the assembly (viscous) 15 links between them, a reduced pitch is needed. In addition, in order to remove the formed links and the assembled chain from the die, vertical movement of the grapple rulers is necessary.

The purpose of the present invention is to expand the technological capabilities of the mechanism.

The goal is achieved by the fact that a clamshell feed mechanism to a die for viscous hook chains containing clamshell grips connected by means of a traverse to a piston actuator rod and located in the directions of their plates with springs and wedges installed in the bottom plate of the stamp with the possibility of reciprocating mixing, equipped with a device for reciprocating vertical mixing of the directions of their slats, made in the form of two shafts, on each of which rigidly fixed three levers The middle of which are interconnected with each other and with a piston actuator stem, guide columns mounted in the bottom plate of the punch with the possibility of vertical mixing and connected at one end with the extreme arms of the shafts, and the other with the guide plates. clamshell rulers are made up of consecutively placed pairs having their own piston drive.

FIG. 1 shows the mechanism, a longitudinal section; on .fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section in FIG. 1 (on an enlarged scale); in fig. 4 shows a section B-B in FIG. 3; in fig. 5 is a section of YYD in FIG. 2; in fig. 6 is a section d-d in FIG. one.

The grabber feeder is mounted on the bottom plate of the stamp 1 installed on the plate of the press 2. The main working body of the mechanism, the grabber rulers, consists of two parts 3 and 4, on which the clamps 5 are fixed and move in guide bars 6. They are connected in pairs between each other by traverses 7, which are mounted with the possibility of vertical movement with respect to the sliders 8, associated with the rods of piston actuators 9 and 10 and moving along the guides 11. In this case, the rollers 12 movably mounted on the sliders 8 are in the slots 1 3 traverse 7 and serve to reduce friction between the sliders 8 and the traverse 7 when they are displaced. Guides 6 are fastened with springs 14 and also interact with wedges 15, which are fixed in the upper plate 16 of the stamp. The guides 17 serve to reciprocally guide the bars 6 when they are closed and opened.

The device for vertical reciprocating movement of the guide bars of the grab rulers consists of two shafts 18 rotating in bearings 19 mounted in the bottom plate of the MPa 1. Each of the shafts 18 has three fixedly mounted levers 20 and 21. The middle levers 20 are connected pivotally between 22, as well as by means of an earring 23 with a drive rod 24. The extreme levers 21 are connected by means of earrings 25 to columns 26 mounted in the lower plate of the punch with the possibility of vertical movement and connected with guide bars and 6 with the help of T-shaped guides 27, located in the upper part of columns 26 ..

To place the blanks 28, a magazine 29 is used, mounted above the gate mechanism 30, the housing of which ZG serves

at the same time, for guiding one of the cross-arms 7 and keeping it in a central position with the help of the grooves 32 located in the cross-arms 7, the groove 32 of one of the cross-arms 7 is in contact with the housing 31, and the groove

the other cross bar 7 contacts with the tray 33 for finished parts.

Shiberny mechanism 30 is placed in front of the die 34 of the stamp, and tray 33 - behind it during the movement of blanks.

Work clamshell feeder

performed as follows.

The blanks 28 are loaded into the magazine 29 and fed to the starting position by the pneumatic actuated slide mechanism 30. In this case, the upper plate 16 of the stamp is in the lower position. When lifting the upper plate 16 of the stamp attached to the press slide, the guiding strips 6 with grab bars 3 and 4 receive transverse movement by means of springs 14. The parts are clamped by grippers 5. Then

the actuator 24 is turned on, which, by means of the earring 23, the ty gi 22 and the levers 20, rotates the shafts 18. The shafts 18, using the levers 21 and the earrings 25, move the columns 26 synchronously upwards and, consequently, the guide bars 6 together with the rulers 3 and 4 , moved workpieces 28 and cross-beams 7. Next follows the movement of rulers 3 and 4 with the workpieces of drive 9 and 10 by means of sliders 8 and traverse 7. After moving the rulers with parts to the extreme right position, they are lowered

a piston actuator 24 by means of the described vertical movement device. The blanks 28 lie on the die 34. Next, the parts are stamped at all positions, and when the stamp plate 16 is moved to the lower position

the wedges 15 are divorced with the clamshell bars 3 and 4, the blanks 28 are released, and the drives 9 and 10 return the rulers 3 and 4 with the grippers 5 to the initial position.

The application of the invention makes it possible to use a clamshell feeder for assembling flexible hook chains from separate flat links, which will allow an increase in labor productivity in assembling chains no less than 3-4 times.

Claims (2)

Invention Formula A grab mechanism to feed a die to a hook chain that contains a grab ruler with grippers connected by means of a crossbeam to a piston drive rod and located in guide bars with springs and wedges mounted on the bottom plate of the chipboard with the possibility of reciprocating movement characterized in that, in order to expand technological capabilities by providing the possibility of supplying blanks with variable pitch and various configurations, it is equipped with a reciprocating device vertical mixing of yushi strips made in the form of two shafts, each of which has three levers rigidly fixed, the middle ones of which are interconnected with each other and with a piston drive rod, guiding columns installed in the lower die plate with the possibility of vertical , AA // 2J . movement and connected at one end with the extreme arms of the shaft, and the other with the guide bars, while the clamshell lines are made up of successively placed pairs that have their own piston drive. Sources of information taken into account in the examination 1.Malov A. M. Cold stamping technologists. M., Oborongiz, 1963, p. 508. 2. Means of mechanization and automation of cold forming. M., Mintraktorselhozmash, 1971, p. 265 (prototype). .