SU1593879A2 - Arrangement for producing wire pins and press-fitting them to articles - Google Patents

Abstract

The invention relates to the processing of metals by pressure and mechanical assembly production, in particular, to devices for the manufacture of pins from wire and their assembly with products such as electrical insulators. The purpose of the invention is to increase productivity and expand technological capabilities by automatically supplying a large number of base products to the assembly position, as well as ensuring the assembly of pins with products of different length and pitch between holes. The wire from the unwinder enters the correct mechanism (M). M feed moves it to a predetermined step, then on it M heading forms protrusions and smoothes the front end. The product is pressed onto the wire, after which it is cut with scissors. Basic products are loaded in cassette bags into the magazine. M unloading packages pushes the latter out of the cassettes into a guide and then supplies the assembly position with a pusher, which is a flexible element, placed in a helical groove of a drum connected through a friction clutch with two drives, continuous and discrete. 18 il.

Description

The invention relates to the processing of metals by pressure and mechanical assembly production, namely, devices for making wire pins and pressing them into the holes of products, particularly the electrical insulator, and is an improvement of the device according to the author. St. No. 1240493.

The purpose of the invention is to increase productivity and expand technological capabilities by automated continuous submission of a large number of basic products to the assembly position, as well as ensuring the assembly of pins with products having different lengths and pitch between the holes.

FIG. Figure 1 shows schematically the basic part with holes; in fig. 2 and 3 - kinematic diagrams of the device; in fig. 4- device, general view; in fig. 5 shows section A-A in FIG. four; in fig. 6 - section BB on

FIG. four; in fig. 7 is a section bb of FIG. four; in fig. 8 - section G-Y in FIG. 7; in fig. 9 is a view of D in FIG. four; in fig. 10 is a view E of FIG. four; in fig. 11 is a wire feed pattern for a pin length; in fig. 12-14 - schemes of landing protrusions on the wire; in fig. 15-17 - schemes of pressing the pins into the product; in fig. 18 is a section of an LF in FIG. sixteen; in fig. 19 shows section 3-3 in FIG. ten.

The device comprises mounted on the base 1 a coil holder 2 for setting the coil of wire 3, a tension device consisting of deflecting 4 and spring-loaded 5 rollers, leveling mechanism 6, wire feeding mechanism 7, clamping mechanism 8, wire protrusion mechanism 9, mechanism 10 segments, a mechanism 11 for crimping the end of a pin, a mechanism 12 for feeding the product 13 onto a wire, a distribution mechanism consisting of an electric motor

WITH

with

00

with

Yu

The lower base of the clamp 50 is made elongated and with the protrusion 52, which, together with the shoulder 44, is necessary to clamp the wire and prevent its deformation or bending during the protrusion of the protrusion. The spring 53 serves to press the roller 46 to the cam 21.

The cut-off mechanism 10 is made in the form of kinematically connected through a cam 2-1 and an axis 24 with a scissors drive shaft 17, which

bodies 14 connected by means of a belt 15 and a gear 16 gears with a shaft 17 and cams 18-23, as well as an axis 24. In addition, the device includes cassettes 25 for product packages 13, a magazine 26 for these cassettes, a product package unloading mechanism 13 of the cassettes 25, the pusher. For feeding a package of products into the assembly zone, as well as a guide 27 with a plate fixed to it 28. Wire feeding mechanism 7 (Fig. 5)

consists of 3 bodies 29, in the guides 10 there are two knives 54 and 55, mounted on which a carriage 30 is housed with a two-shoulder strut mounted with two levers with a lever clamp 31 installed in the rear, spring-loaded ends with rollers 56

to cam 57. The latter, via lever 58 and pivotally connected to this lever, is guided to a compensator 60 of cutting force and a crank 61, which, in turn, is mounted to rotate around axis 24 and interact through roller 62 with cam 21. To ensure that the pins do not rest on the bottom after assembly

the clamp 31, and the other is clamped through the roller 20 by the knife 54, the groove 63 is made on it. 33 to the cams 18 of the drive shaft 17 by crimping mechanism 11 (FIG. 9)

part of the pin consists of an L-shaped grip 64, mounted hingedly on the arm of the grip 65 with the possibility of oscillating movement up to the stop 66, mounted on

to the housing 29, with one end of it being the same, the spring loaded is clamped through the adjusting screw 36 in kaka 67, located in the gripper 64 with the possibility of reciprocating movement, and the actuators moving the gripper 64 and the stem 67. The gripper 64 64 serves as a bar 68 fixed at one end on the axis 69, while the other is pressed by the spring 70 to the gripper. Plank 68, as well as rod 67, are connected via levers 71 and 72 and roller 73 to drive cam 22. Lever 71 is mounted to cooperate with a crimping force compensator 74.

The mechanism 12 for feeding the product 13 onto the wire (Fig. 10) is made in the form of a carriage 75 mounted in the bed guides 76 with the possibility of reciprocating movement. On the carriage, the stop 77 is pivotally fixed 0, connected by means of a lever 78 with a microswitch 79 of the drive shaft 17.

Mechanisms are also placed on the carriage 75 for precisely guiding the wire.

vertically movable, and actuators for moving the spring-loaded clamp 31 and carriage 30. g

For the vertical movement of the spring-loaded clamp 31, a lever 32 is used, which is hingedly mounted on the carriage 30. One end of the lever 32 is constantly in contact with the spring-loaded

spring means 34.

To move the carriage 30 with the wire pressed against it by a clamp 31, a lever 35 is hingedly attached.

the retainer 30, and the second through the roller 37 is in contact with the cam 19 of the drive shaft 17. The screw 36 adjusts the wire feed pitch and, accordingly, the length of the pin.

The clamping mechanism 8 (Fig. 6) consists of a housing 38 installed therein with the possibility of vertical movement of the spring-loaded clamp 39 and the drive for moving the latter. The spring-loaded clamp 39 is kinematically associated with the cam 20 by a system of levers 40-42. The lever 40 is hinged to the frame 1, one end in contact with the spring-loaded clamp 39, and the other through the lever 41 is connected with the lever 42. The last one end is mounted on the axis 24 of the distribution mechanism, and the other is in contact with the roller 43 shaft 17. The housing 38 is made with a shoulder 44, which is necessary for laying

3S

the wire during the subsequent operation, in the hole of the product and stepper displacement of the protrusion on the wire.

The landing mechanism (Fig. 7) is made in the form of a lever 45, one shoulder of which is pivotally connected to the element for landing, and the other is kinematically connected to the cam 21 of the drive shaft 17 by means of a roller 46 mounted on the force compensator 47. The lever 45 C arnirno mounted on the bracket 48.

The projection member consists of a housing 49 on which is mounted

not the last. The first one is made in the form of a hinged lever 80, which is spring-loaded at one end to the stop 81 mounted on the base 1. At the other end of the lever 80 there is a groove for fixing the dies.

The step-by-step movement mechanism of the product 13 is a double-arm lever 83 that is spring-loaded to the last elastic element 82 and pivotally connected to the end of the lever 84 fixed by the other end.

The spring-loaded clamp50, and between the clamp-55, can be rotated on the carriage 75.

The casing and the housing are fixed to the follow-lever 83 and are connected to the microswitch 79

The axle has a punch 51 with a cut-out for the drive shaft 17. The lever 84 is mounted

landing protrusions on the wire. with the ability to interact with the hinge

The lower base of the clamp 50 is made elongated and with the protrusion 52, which, together with the shoulder 44, is necessary to clamp the wire and prevent its deformation or bending during the protrusion of the protrusion. The spring 53 serves to press the roller 46 to the cam 21.

The cut-off mechanism 10 is made in the form of kinematically connected through a cam 2-1 and an axis 24 with a scissors drive shaft 17, which

have two knives 54 and 55 fixed on a pivotally mounted two-armed snarl in the hole of the product and the step movement of the latter. The first one is made in the form of a hinged lever 80, which is spring-loaded at one end to the stop 81 mounted on the base 1. At the other end of the lever 80 there is a groove for fixing the dies.

The step-by-step movement mechanism of the product 13 is a double-arm lever 83 that is spring-loaded to the last elastic element 82 and pivotally connected to the end of the lever 84 fixed by the other end.

5 with the possibility of rotation on the carriage 75.

mounted on the base and spring cam 85.

The carriage 75 is attached coaxially to the groove for placing the product a guide 27 with the plate 28. Parallel to the guide 27 with the possibility of movement in a plane perpendicular to the longitudinal axis of the latter, a magazine 26 is installed for the cassettes 25.

The mechanism for unloading the package of products 13 from the cassette 25 is designed as a driver 86 installed with the possibility of reciprocating movement along the rod 87, parallel to the guide 27. The movement drive of the magazine 26 and the driver 86 consists of electric motor 88, gearbox 89, cams 90 and 91, mounted on the shaft pe10

The latter, reaching its front end position, acts on the microswitch, which signals the reverse of the electric motor 88 and the activation of the electric motor 101.

During the reset, the leash 86 grabs the empty cassette 25 from the magazine and dumps it from the groove 110, then the cam 91 rotates the fork lever 92 to the initial position, which in turn moves the magazine 26 back.

When the motor 101 is turned on via a belt drive 106 and gears 102-105, the rotation is transmitted to the shaft of the drum 96 and the shaft on which the cooler 89 is attached, the fork lever 92, pivotally ° chock 108. As the drum rotates

unwind the flexible element 97, which at its end will deliver the package of products up to the stop 77 in the assembly area, with the first nest of the first product in the package being

fixed at one end on the base 1 with the possibility of alternate interaction with the other end with the cams 90 and 91, as well as a belt drive in the form of a toothed belt 93 and shchkivs 94. The leash 86 20 is coaxial with the guide groove for wire-mounted on the belt 93. The magazine 26 leads - ki. Then the stop 77 is lifted, which, when in motion, with the fork lever 92, for which a groove is made in the magazine case, in which the pin 95 is attached, fixed

the action of the lever 78 on the microswitch 79, sends a signal to turn on the shaft 17 of the distribution mechanism.

A clamp 31 kinematically associated with

on the lever.

A clamp 31 kinematically associated with

A pusher for feeding a package of products into the cam 18 of the shaft 17 by means of the lever 32

the assembly area is implemented in the form of a flexible elastic element 97 mounted on a plate 28 for rotation of a drum 96 with a helical groove 97 placed in the latter in one row of at least three on pinch rollers 98 positioned for free rotation on a plate 28 circumferentially drum 96, as well as drives of continuous rotation and discrete rotation, associated with the axis of the drum through the friction clutch 99, the force in which is determined by the spring 100.

The continuous rotation drive consists of an electric motor 101 and a gearbox, including shchestreni 102-105 and connected to the belt drive motor 33, lowers and presses the wire 3 in the groove to the carriage 30. Then last, moving from the cam 19, the lever 35 feeds the wire for the open knives 54 and 55 by an amount equal to the length of the pin in the assembly area, then the clamp 39 is lowered under the action of the cam 20 and the system of levers 40-42 and presses the wire to the housing 38. After that, a protrusion occurs simultaneously on the side surfaces Stretch the wires (to make subsequent contact) and starts pressing the product onto the end of the wire (at the first contact). The housing 49, which is kinematically associated with the cam 21 through the lever 45 and the force compensator 47, begins to fall, and first touches the other 106. On the shaft of the pinion 104, 40 die 50 is attached, which presses it

the cam 108 interacts with the microswitch 107. The discrete rotation drive of the drum 96 is made in the form of a dog 109 fixed on the base 1, which is installed with the possibility of

notion of interaction 105.

The device works as follows.

The magazine 26 is loaded with cassettes 25 with packages of products (insulators) 13. The first cassette falls into the receiving groove 110 of the base and serves as a support for the rest. When the electric motor 88 is turned on, the cams 90 and 91 begin to rotate and the lead 86 moves, which pushes the package of insulators out of the cassette 25 along the groove 110. The cam 90 rotates the forked lever 92, moves the magazine 95 with its finger 95 so that the empty cassette 25 was located on the movement path of the leash 86.

its protrusion 52 to the ledge 44. The case 49. continuing to descend, presses on the punch 51, which, going down (Fig. 11), presses on the wire and with a notch displaces (squeezes) parts of the metal in the position b (Fig. 12-14) on side surfaces about dies.

Pressing is carried out as follows. At the decorated end of the wire, simultaneously with the protrusion, gQ begins to move along the base guides 76 of the carriage 75 with the product 13 and the pusher of the product package under the action of the cam 23 onto the guide 27. As it approaches the wire, the lever 80, bumping onto the stop 81, lowers on the wire, until it hits the plane of the edge of the guide 27. and, having covered the wire with its groove, precisely guides it to the nest of the product, and the roller of the lever 84, moving along the surface of the cam 85, is

The latter, reaching its front end position, acts on the microswitch, which signals the reverse of the electric motor 88 and the activation of the electric motor 101.

During the reset, the leash 86 grabs the empty cassette 25 from the magazine and dumps it from the groove 110, then the cam 91 rotates the fork lever 92 to the initial position, which in turn moves the magazine 26 back.

When the motor 101 is turned on through the belt drive 106 and gears 102-105, the rotation is transmitted to the shaft of the drum 96 and the shaft on which the cam is fixed 108. When the drum rotates,

108. When the drum rotates, it starts

unwind the flexible element 97, which at its end will deliver the package of products up to the stop 77 in the assembly area, with the first nest of the first product in the package being

coaxially with the wire guide groove. Then lift the stop 77, which

coaxially with the wire guide groove. Then lift the stop 77, which

the action of the lever 78 on the microswitch 79, sends a signal to turn on the shaft 17 of the distribution mechanism.

A clamp 31 kinematically associated with

cam 18 of shaft 17 by means of lever 32

and the roller 33 lowers and presses the wire 3 in a groove to the carriage 30. Then last, moving from the cam 19 by the lever 35, feeds the wire by the opened knives 54 and 55 by an amount equal to the length of the pin to the assembly area, after which the pressure 39 lowers under the action of the cam 20 and the system of levers 40-42 and presses the wire to the housing 38. After this, a protrusion occurs on the lateral surfaces of the wire (for making subsequent contact) and the product starts pressing on the end of the wire (at the first contact). The housing 49, which is kinematically connected with the cam 21 through the lever 45 and the compensator 47 of the force, starts to fall, and the first one is to press the wire 50, which presses it

five

its protrusion 52 to the ledge 44. The case 49. continuing to descend, presses on the punch 51, which, going down (Fig. 11), presses on the wire and with a notch displaces (squeezes) parts of the metal in the position b (Fig. 12-14) on side surfaces about dies.

Pressing is carried out as follows. At the decorated end of the wire, simultaneously with the projecting of the projections, Q begins to move along the base guides 76 of the carriage 75 with the product 13 and the pusher of the product package under the action of the cam 23 onto the guide 27. As it approaches the wire, the lever 80, hitting the stop 81, lowers on the wire until it hits the plane of the edge of the guide 27. and, covering the wire with its groove, guides it exactly into the product slot, and the roller of the lever 84, moving along the surface of the cam 85, rotates the lever 84 until it stops, causing the lever 83 moves away from the product 13. Since the size of the protrusions of the wire is larger than the size of the socket of the product, the product is pressed onto the wire with tension. When pressed, gear 105 pushes against the pawl 109 and always scrolls one and the same step, regardless of the size of the gap created between the assembled product and the bag. If the gap between the assembled product and the bag is equal to the pitch r of the nests in the product, the friction mechanism will operate, i.e., the drum 96 will rotate by the amount of r, and the gear 105 will slip relative to the drum. If the gap is equal to the pitch d between the sockets at the junction of the two products, then the drum also rotates by an amount of g. The gap formed (g and e} between the assembled product and the bag is selected by the flexible element 97 during the pressurization of the product onto the wire. and shaft with cam 108.

The next operation after pressing is a piece of pin from the wire with simultaneous clearance of the end of the previous pin and the lead-in part of the next one. At the same time, the cam 21 t is the goy 59 and the lever 58 rotates the cam 57, which, acting on the rollers 56, reduces the blades 54 and 55. The pin segment occurs. At this time, the projection mechanism, and after the cutting operation, the wire feeder and wire clamping device occupy the initial position.

To eliminate burrs that may form after cutting, crimp the end of the pin. For this, the lever 71 under the action of the cam 22 and the lever 72 with the roller 73, stirred in the direction of movement of the wire, turns the grip 64 up to the stop 66, after which the lever 71, without stopping, contacts the crimping force compensator 74, while the bar 68 rotates around the axis 69. The gripping surface 64 and the stem 67 are clamped together and the end of the wire is crimped. Those burrs or metal spreading that are possible after cutting the wire are eliminated and the end of the wire is formed. After that, the carriage 75 moves back from the scissors. The end of the lever 80 comes out from under the stop 81,

therefore, the lever 80 returns to its original position, and the roller of the lever 84, moving along the surface of the cam 85, rotates the lever 84 until it stops, with the result that the lever 83 moves the product 13 to the schag (in this

the same time, wire is fed to the length of the pin).

After pressing the last pin into the last product of the package, the cam 108 presses the microswitch 107, which

sends a signal to turn on the drive of continuous rotation of the drum, and the flexible pusher returns to its original position.

Claims (1)

Invention Formula A device for making wire pins and pressing them into a product according to ed. St. No. 1240493, characterized in that, in order to increase productivity and expand technological capabilities, it is equipped with cassettes for product packages, a magazine for drive cartridges, a mechanism for unloading a package of products from a cassette, a pusher for feeding a package of products to the assembly area, as well as a plate, mounted on the guide carriage of the product feeding device onto the wire, the mechanism for unloading the package of products from the cassette is made in the form of a driver-driven leash, installed with the possibility of reciprocating movement from the latter it, the pusher for feeding a package of products into the assembly area is made in the form of a flexible element mounted on a plate for rotating the drum with a helical groove placed in the latter and fixed on the drum with one end of at least three pressure rollers placed with the possibility of free rotation on a plate around the perimeter of the drum, a drive for continuous rotation of the drum, including a gear mounted coaxially with the latter, a friction clutch disposed between the drum and said gear, and a discrete drive rotation, fixed on the base with the possibility of interaction with the bristles, and the magazine for the cassettes is installed parallel to the guide with the possibility of movement from the drive in a plane perpendicular to the longitudinal axis of the latter. g 3 2 1 Fy -j- | i | i i M i: T-shttsh /. CO FIG. b 20 hch A- A Bb FIG. 6 8-B 7 Yr  lv 52-h P.8 12 Bio FIG. 9 55 39 Fy FIG. 7 j FIG. 15 51 FigLg 1 FIG. W 19