DE1565983A1 - Tool with pestles moving back and forth - Google Patents

Description

Dr. phil. G. B, HAGEN
Patent attorney

MUNICH-SOLLN

Franz-Hals-Strasse 21

Telephone 796213

AMP

Munich, April 1st, 1966

AMP Incorporated Eisenhower Boulevard Harrisburg, Pennsylvania Ö, S.A.

"Tool with reciprocating Plungers ".

Priority; tf.SJU; April 7, 1965 """" * - "US Serial No. 446 278.

The invention relates to tools with back and forth running rams that slide in the frame, in which the ram is arranged to perform an operation. Such tools are useful, for example, for assembly work, in which components in a assembled relationship through a stoasar belt passage to be brought. ..

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Bay «! · * · Veretaebenk Munich 820883

BAD ORlGlNAt

The invention is particularly useful in one Tool for carrying out the invention of patent application A 42 218 (3568) by the same applicant for Creation of clamp-like electrical connections. In the previous invention, an electrical The connector bracket telescopes onto an end clamp to grip a conductor wire that extends transversely to one end of the end clamp to move the wire with the clamp onto the clamp and the wire clamp between a web of the clamp and one side of the clamp. Tools for making such connections are, for example, in patent applications A 46 664 and A 48 3I6 (3797 and 7009), and patent application A 42 218 (3368) by the same applicant.

According to the invention, a tool has a back and forth moveable plunger on which can slide in a frame and is arranged so that it is in one direction can be driven by triggering an electrically deformed, elastic member, which is held in the frame and coupled to a reciprocating rack part, the rack by a Motor can be driven with a rotatable pinion which engages in the rack to the elastic device to deform elastically, with a releasable «latch is arranged, to the elastic part in the elec-

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to keep the trisoh deformed state, whereby a release of the pawl allows the elastic part « to drive the ram in one working stroke and the Work of the engine the elastic part in latched, deformed state to a further working stroke Y

The rack is preferably equipped with an oil duct11 coupled, which is arranged * so that it compresses a helical compression spring when moving backwards » and when moving forward the ram by one after forward working stroke. The lead part is best coupled to the plunger in such a way that a backward movement of the plunger causes a backward movement of the plunger at the same time as the compression the spring causes *

The oil is advantageously on the ram coupled by a releasable, rigid coupling and an overload release coupling arranged so that in an initial part of the working stroke of the St Os- ^ be driven by the rigid coupling and at a subsequent part of the working stroke of the Tappet through the overload release clutch g @ - is drifting * In this way can be a high Initial force can be brought into action by the plunger, and then the force that the Brings ram to use, through the force, be «.

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restricts that the overload release clutch can transmit.

The motor can be an electric motor that is operated by a switch and its drive by a Reduction gear performs. In this way, an electric motor with a relatively low force can restore a strong compression spring compress, wdtoei the spring is able to exert significantly higher ram forces than with the same speed can be achieved by the motor.

Further features and advantages of the invention emerge from the following description of one shown in FIG the attached schematic drawings of the exemplary embodiment shown.

Fig. 1 is a partial sectional view of a hand tool according to the invention,

1A is a fragmentary perspective view of a portion of a strip of electrical connector clips;

Figure 1B is a cutaway side view of an electrical connection between an end terminal pin

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and a conductor formed with a Bracket of the strip according to Fig. IA the tool according to FIG. 1,

Fig. 2 is a fragmentary perspective view, on an enlarged scale, of a front one End part of a Klsuanernatösael of the tool according to Fig. 1,

Fig. 3 is a fragmentary sectional view of the front part of the tool according to Fig. 1,

Fig. 4 is a perspective view of a release device of the tool of FIG Control of the movement of the Klaameratreifena,

Figures 5, 6 and 7 are top sectional views of the tool of Figure 1 taken along lines 5-5 * 6-6 and 7-7 of Fig. 1,

8, 9 and 10 are cross-sectional views of the tool along lines 8-8, 9-9 and 10-10 of FIG Flg. 7 seen in the direction of the arrows.

Fig. 11 is a perepektiviaohe "uaeimoidergtsogen" Representation of a part of the tool

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Fig. 12 is an exploded perspective view Representation of the release mechanism of the tool »with the parts from the normal Positions in the tool are reversed for clarity.

Pig, I3 is a fragmentary sectional view taken along lines 13-13 of FIG. 1 in direction of the arrows "with the release mechanism of the" tools "in one position closed The beginning of a work cycle is "

Figures 14 and 15 are views similar to that of Figure 13; however, parts of the trigger mechanism are in successive stages of the working cycle are shown

16 is a fragmentary sectional view of a lower portion of a drive shaft of the tool taken along line 16-16 of FIG. 17;

Fig. 17 is a sectional view taken along lines 17-17 of Figs. 16, and 16

Fig. 18 is a fragmentary side elevation view in an enlarged scale of the part of the tool in which an ole part is part of the bracket.

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In FIGS. 1A and 1B it is shown that a connecting clip 2 for establishing an electrical connection consists of a web part k with a pair of opposing side walls 6 which are bent inwardly and towards the underside of the web «as shown at 8. An outwardly cup-shaped printed insulation carrier is arranged in the front end of the web in order to hold a conductor 1h at the point where it emerges from the clamped relationship between the web and a terminal pin 12. In the completed connection according to FIG. 18, the end 16 of the conductor, which has been stripped of its insulation, is held between the inner surface of the web 4 and the surface of the terminal pin.

The tool of Fig. 1 is an electrically operated one Hand tool with a pisto-like handle 3, a TrSgerunterrahroen 5, the one at the top of the handle is attached and an Osokelplatte kanalfö'rmiger design. You seldom the Beckeiplatte overlap the vertical flanges 9 on the sides of the support frame 5 and are attached to it, as best shown in FIG. 9 is evident. *

When a clip-like electrical connection is formed, a one-of-a-kind connection becomes clearer 2 with the help of a Klaioaern slide 18 (Fig. 2 and 3)

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Over a mandrel 36 and pushed onto a pinch pin " which is placed in alignment with the mandrel. The staple slide 18 1st from kanalfÖrmlgem Cross section with a top wall 22 from which side walls 20 are directed downward, as in FIG. 5 shown. The front end of the clip pusher 18 has downwardly and rearwardly sloping cam surfaces 2 ^ on each side, * which work to be a trigger control as described below · The staple slide 18 is on a fixed guide rod 24 held and movable on this, which extends from the front end of the tool to the rear end and held at its rear end by a flange 25 which extends from the support frame 5. The guide rod 24 has a vertically standing rib 26, as shown in Fig. 8-10, on their upper surface, which extends in the longitudinal direction of the staple slide 18 extends between the downwardly facing side walls. When the tool loads, a Strips of connecting clips between the side walls 20 of the staple slide 18 placed astride the rib 26 until the clearamer strip 2 is calibrated it stretches to the front end of the Kiaanem slide, as shown in Fig. 3.

The strip of brackets is used during the work stroke

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of the tool is moved forward with the aid of a pair of spring arms 28 which are arranged against cut-away parts 32 of the side walls 20. The cut away side wall portions j $ 2 do not extend to the front ends of the side walls so that a full side wall thickness as shown in Fig. 2 is created at the front end with lower flat surfaces, such as at 27. The portions 27 of the side walls cooperate the cam surfaces 23 together to control the detent plate 52, FIG. The front ends 30 of the arms 28 are directed inwardly and extend through openings 31 ⁱⁿ the rare walls 20. The arrangement is such that the inwardly directed ends 30 insert into the gap between the front bracket of the strip and the next following bracket, so that the front bracket is pushed and the rear part of the clamp strip is pulled forward during the forward movement of the staple pusher "the principles of this method of supplying Endklemmenklammern are described in the patent application A of the same applicant 46 66H- (3797) and claimed, the spring arms 28 βretrecken from a U-shaped bracket part Jk, with which they consist of one piece, which is mounted in an incision on and astride the clip 18 "

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The mandrel 36 is generally T-shaped in cross section and adapts to the internal dimensions of the connecting brackets 2, so that the front bracket over the end of the dome can be pushed through the clip slide 18 and beyond the end of the dome. The thorn 36 extends from a mandrel block 38, which in turn is in a cutout in the front end of a support block 40 is arranged. An opening 42 extends downward through the head of the mandrel 36, as shown in Fig. 3 for receiving an end portion of a wire 14, and a groove 44 slopes forward and upward onto the front end of the mandrel from the front of the opening 42 closed. A transverse opening 46 is provided in the mandrel 36 and intersects opening 42. Opening 46 allows removal of the portions of stripped Insulation material that remains when the wire is pulled over the mandrel by the clamp. The mandrel 36 has a tapered rear extension 48 that extends backwards protrudes towards the guide rod 44 and hangs over an incision 50 in the support block 40, the The width of the rear extension 48 is such that the strip of connector brackets above and onto the front part 36 of the mandrel can be pushed.

As described in more detail in the patent application A 46 664 (3797) of the same applicant, the front ver

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binding clip of the strip from the strip during the movement of the staple slide with the help of a release device is interrupted * the next one or second ¥ erbdungsklameer of the strip attacks. In the embodiment shown, this has a release device the shape of a locking plate 52, which is in the Cutout 50 included and upwardly and in engagement with the stripe of the connecting clearamers is pressed " with the help of a screw pressure spring 51 and of a ball bearing 55 »The underside of the plate 52 is held by the ball bearing 53 «so that the plate can pivot during the movement of the staple slider. The locking plate 52 is on its upper surface opposite to a pair, at a distance from one · » other lying stops 54 and 56 are provided, the rear stop 54 is a rearward sloping surface 54a and a forwardly facing shoulder surface 54b · The front stop 56 has a rearwardly facing shoulder surface 56b and one forwardly inclined surface 56a. The surfaces 54b and 56b are at a distance from one another that is slightly greater is than the length of the curved parts 8 of the side walls a single connecting bracket 2. condensation 58, 60 are on each side of the stops 54 »56 varetMten and lie at a distance from it and have similar inclined and shoulder surfaces

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At the start of the working cycle of the tool, the clamp sucker 18 is in the position shown in FIG. 3 Position with the ends 30 of the arms 28 between the front bracket and the next following bracket of the strip. The front connecting clip of the strip lies with its inwardly curved side wall parts 8 between the opposite shoulder surfaces 54b, 56b, and the plate 52 is held in a tilted state by the rare wall parts 27 of the clip sucker. These rare wall parts 27 are located at the beginning of the cycle against the bulges 60 on each side of the front stop 56 to the front Tilt the end of the plate 52 downward so that the front connecting bracket is free at the stop 56 being moved forward past.

During the forward movement of the clip pusher 18 from the position in FIG. 3, the front connecting clip is moved over the mandrel 36 until the next following clip of the strip moves up to the shoulder 56b of the front thickening 56, to which When the front end of the plate 32 has moved upwards under the influence of the spring 51. The shoulder 56b lays down in front of the next following placard, about the forward movement of the strip to interrupt beyond the thickening 56 addition. The front bracket is then removed from the strip by a

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further forward movement of the staple pusher 18 aborted and over the mandrel 36 and onto an end clamp pin pushed, which is in alignment with the mandrel 36, and against a guide extension on the Mandrel block: · During the backward stroke of the staple slide, the strip of staples is pressed against the Moving backwards in Pig. 3 held by the stop 54, since the forward shoulder 54b this Attack at the rear end of the front bracket engages.

The parts of the subgroup consisting of mandrel block 38, the support block 4o and the guide rod 24 exist, are interconnected by links 65 and a generally U-shaped hood portion 62 at the front end of the The tool closes part of the mandrel and the front end of the clarifier slide 18. The hood 62 forms in cooperation with the guide rod 24 and the mandrel 36 an enclosed channel through which the The staple pusher moves so that the staple pusher 18 is closely guided during its stroke. A 'slot' 63 is provided in the front part of the hood 62, to insert the wire into the opening of the mandrel 38 to allow. The support block 40 is on a stationary platform 120 through a link 61 as set out in Pig. I shown.

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The clamp pusher 18 is moved forward from the state according to FIGS. 1 and 3 by a pair of helical compression springs 126, which are in a compressed state at the beginning of the working cycle and extend in such a way that that they release the necessary energy to move the staple slide. After completing the forward directed Arbeltshubes the staple slide, the springs 126 by the action of a small motor 164 compressed in the tool handle.

The manner in which the springs are compressed and the structure of the set of gears for performing the compression of the spring are described in detail below. The clip pusher 18 is coupled to the springs 126 by two separate coupling devices, one of which is an overload release coupling, while the other is a disengageable rigid coupling. These coupling devices are arranged parallel to each other so that the movement of the springs can be transmitted through each of the couplings. The disengageable rigid coupling is operative during the first part of the stroke of the staple pusher to transmit force or pressure from the springs 126 to the staple pusher 18 as the clip is moved over the mandrel 36 and pulls the wire out of the opening 42 into the mandrel. A coupling between the clip slide 18 and the springs, which is able to provide a relatively

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Transferring high pressure is required during this initial part of the stroke as it is the highest Strength developed throughout the cycle, is achieved while the clamp pulls the wire out of the opening 42. The disengageable, rigid coupling is automatically released during the initial part of the stroke of the staple slide 3.8, in order only to the overload release clutch for the transmission of forces from the springs 126 to the staple slide 18 to leave. The overload release clutch can be disengaged, in order to avoid the application of undesirably high stresses to the clamp when they moves on and along an end clamp pin, for example, to avoid damaging the clamp when it hits a clamp comes that is already pushed onto the end clamp pin · The provision of a releasable, rigid Clutch and an overload release clutch a tool for producing a clamp connection is disclosed in patent application A 46 887 (3808) same applicant feesohrielren

Hereinafter, a triggering device is described which is arranged so that the forward or Arbeltshub takes place of KLaaraernsehiebers 3.8 in two separate stages · During a first stage, the bracket in Fig. 3 vorwärtsgeschooen ^ to it over the front

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* ORIGINAL BATHROOM

end of Börnes 36 overhangs. During the second Stage the clamp is slid over the mandrel 36 and onto an end clamp pin that is in alignment with the the mandrel is arranged. The advantages of this interrupted stroke, which in the simultaneous running Patent application A 48 316 (7009) by the same applicant is described that the tool is in alignment can be brought with the end clamp pin on the first part of the cycle and the overhanging connector bracket on the mandrel can be used as a guide device to guide the mandrel 36 with align with the end clamp pin.

As shown in Figures 8-11, are the clip pusher 18 and the guide rod 24 in the middle in a channel-shaped Contain carrier portion 64 which has an elongated web 66, the upwardly directed side wall portions 68, 70 has. The clip slide 18 is connected to the bumper beam 64 by a pin 72, which extends between the side wall portion 70 and through a transverse slot in the staple push rod 18, as shown in FIG. In this way, any longitudinal movement of the push rod carrier Part 64 is transferred to the staple push rod 18 through the pin 72. The guide rod 24 is held at its ends by the front block 4o and the rear flange 25, and it moves

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not in relation to block 40 while working takes place. The carrier 64 has cut away side walls over a central portion, as shown at 74, between front side wall portions 68 and rear side wall portions 70, and a guide rod support shell "/ 6 is mounted in this cut-away section. The length of the tray 76 is less than the length of the cut away sections 74 of the side walls so that limited movement of the support shell 76 within the section in the longitudinal direction of the bumper beam 64 is possible The support shell 76 extends laterally over the Truss sidewall portions 68,70 out as shown at 78 and the extensions 78 grip the ends of the cut-away section to see the relative Limit movement. A tongue 80 that comes from a Piece consisting of the shell 76 extends rearwardly into the support 64 between the rear side wall portions 70 inside and a similar one, made of one piece therewith existing tongue 82 extends forwardly from of the carrier shell 76 between the side wall parts 68 of the wearer. The tongue 82 is laterally extending Lugs 84 at their front end, as shown in Fig. 9, which are provided with semicircular notches, within which ball bearings 88 are arranged. the Ball bearings 88 extend through slots 86 in Rare wall parts 68 and engage in corresponding

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Shells 90 fit into the front ends of a pair of parallel, spaced apart levers 92.

The sides of the slots 86 converge slightly at their front end and have curved cuts 85, which are near the rear ends of the slots. The cuts 85 have a radius that is smaller than the radius of the ball bearings 88, and the ball bearings sit in these notches when the overload release clutch is engaged. The levers 92 are generally channel-shaped in cross-section, wherein their webs are opposite outer surfaces of the side wall portions 68, and they are rotatable between their Ends mounted on upright pins 94 located on opposite sides of beam 64 are. The rear ends 96 of the levers 92 are gripped by spring fingers 98 which extend forwardly a U-shaped bracket portion 100 extend out. The spring fingers 98 are arranged so that they the Push the rear ends 96 of the levers 92 away from each other, whereby the front ends of the levers 92 are urged towards each other. The ball bearings 98 work in Cooperation with the incisions Ö5 in the slots 86 releasable to couple the carrier 64 with the levers 92 so that the forward movement of the pins 94, as shown in FIG. 1, leads to a forward movement of the staple pusher 18.

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The connection between the clip pusher and the pins $ k is of the overload release type and is arranged so that if the clip pusher 18 encounters an undesirably high resistance, the ball bearings 68 are pushed out of the seats 85 and pressed relatively outwardly for limited rotational movement the lever 92 to exert against the compressive force of the spring fingers 98. When this occurs, the forward movement of the carrier 64 and the clarifier slide ceases while the levers 92 and pins 94 continue to move toward the front end of the tool. The ball bearings 88 roll in the slots 86,. after they have moved out of the cutouts 85 during this relative movement of the levers 92 in relation to the carrier 64.

The carrier 64 also has a ball bearing carrier on it rear end between a pair of upward Side walls 135 of a plate 134 as described below. As best shown in Fig. 11, the Tongue 80 of neck 76 enlarged at its rear end, to form protruding approaches to the side and is with semicircular notches in each approach provided, within their corresponding Ball bearings 71 are used. The ball bearings 71 extend through slots 69 in the side wall parts

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70 and in aligned slots I33 in the side walls 135. The ball bearings 7I do not act as one Overload release connection between the bumper beam and the side walls I35, but serve to hold the carrier 64 at its rear end between the Center sidewalls I35 and hold it in such a way as to allow relative movement in relation to the side walls 135 becomes possible. ·

The bracket portion 100, from which the spring arms 48 extend, has a rearwardly extending tongue 101 disposed between the upwardly facing side walls 135 of the plate I34. The tongue 101, the plate 134 and a plate 104 under the plate 134 are movable on a reciprocating Slide 107 attached by a connection 105, I58. The sliding part 107 consists of an elongated, narrow plate 108, the downwardly directed side walls 110, 112 at its front end. The plate 104 is mounted on the top surface of the plate IO8 by a mounting connection 106 shown in Figure 10 and below and the pins 94, which rotatably hold levers 92, are attached to the plate 104. the Side walls 110, 112 of plate IO8 have forwardly extending extensions that curve outward are to laterally extending vertical flanges

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114 to form. The paddles 114 are provided with semicircular notches II5, which are in corresponding, circumferential grooves 117 of a pair of Blind 116 are included, as in Pig. 5 shown. The bandages II6 are sliding on parallel, at a distance mutually lying guide rods 118 mounted, which are attached to flanges 122, 124 of a fixed support platform 120. The platform 120 is on the vertical flanges 9 & n the sides of the frame part 5 by downward flanges 125 of the platform 120 attached. The springs 126 are introduced between the flanges 124 and the collars Il6, so that when these springs are in a compressed state, as in FIG. 1 is the case, they push the collars 116 and thereby the sliding part I07 forward.

A trigger mechanism, described below, normally holds the slide 107 in the retracted position shown in FIG. When the trigger mechanism is triggered so that the springs are free are to push the collars 116 and the oil part IÖ7 forward, the clamp slide 18 is also moved forward by transmitting the spring pressure through the sliding part 107 onto the plate 104 and from there by the pins 94 which are attached to the plate 104 are, as shown in Fig. 10, on the levers 92. Da

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Since the levers 92 are moved forward during the movement of the slide 107, they take the carrier 64 in turn the ball release connection 86, 88, 90 between the fingers 98 and the carrier 64 with. The clamp pusher 18 itself is moved forward by the pin 72 connecting the side walls 70 of the carrier 64 to the clip pusher 18 connects.

The power transmission device as described above represents the overload release clutch that works so that the carrier 64 is released from the levers 92 when a resistance of a predetermined amount acts on the connecting bracket. Below is the releasable, rigid connection between the staple slide 18 and the springs, which provide an optional path of power transmission from the springs to the Represents staple slide 18.

The releasable, rigid coupling between the shear bar 18 and the sliding part 107 is pivoted by a Angle plate 127 shown, which is arranged in the central portion of the tool and is through a central Opening I52 extends in a plate 134, as shown in Fig. 11 and 18 shown. The component 127 has a tongue 128 on its front upper end, which is normally extends obliquely upward and forward from the surface of the plate 134 when the parts are in position

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after Pig. 1 and in a cut away section IJO of the web 66 of the carrier 64 behind slots 86 intervenes. The tongue 128 has an opening 138 through it which has an upward flange I36 on the front The end of the plate 134 protrudes. The plate 134 is on the sliding part 107 through the attachment 105 and 106, which extends downwards through sleeves 14G, 141 in a plate 15Oi as described below, attached and with the sliding part movable and is screwed into the sliding part 107. A forward movement of the sliding part 107 also leads for advancing plate 104, plate 134, and of the component 127. The tongue 128 pushes the carrier 64 forward as a result of its engagement with the web 66 of the carrier through the tongue 128. This power transmission path depends on the position of the tongue 128 in the cut-away section 130 of the carrier 64 and force is only transmitted from the springs to the clamp slide l8 as long as when the component 127 is in alignment, as shown in FIG. This releasable, rigid connection is during the working stroke of the staple slide solved by the tongue 128 in a way and Downward swinging manner, which will be described below.

The component 127 extends downwards and obliquely through the opening I32 of the plate 134 and through an opening

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152 in plate I50. The plate 127 has a zigzag shape at its lower end, as shown at 146 in Fig. 1, and is spaced apart by a pair lying rear feet 148 provided at the lower end. The pods 148 extend downwardly through a pair of spaced-apart slots 154 in FIG Plate 104 so that a foot 148 is located on either side of plate 108. The slots become I54 formed by a U-shaped opening in the plate 104, to show a central forwardly extending tongue 156 that acts as a spring for the component 127 works.

The fixed platform 120 is provided with inwardly directed lugs 149 between its ends, as shown in FIGS Position according to Fig. 1 are located. The section 147 ^de s component 127 is normally held on the upper surface of the plate 108, the spring tab 156 abuts against the upper surface of the portion 147, so that the component 127 in the inclined forward and upward position of Flg. 18 is held.

When the sliding part 107 is out of position after

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18 moved forward under the influence of the springs 126, the feet 148 move against the tabs 149, whereby the feet 148 are slightly raised by engagement with the lugs 149. The component 12? characterized seen in the counterclockwise direction as shown in Figure 18 _e, tilted so that the tongue 128 downward and out of engagement with the push rod carrier 64 moves. Such a release is brought about by a slight movement of the sliding part 107 and releases the rigid coupling between the clip slide 18 and the plate 107. This small movement corresponds to a movement of the leading clip beyond the opening 42 into the mandrel block 38. During this portion of the stroke of the staple pusher 18, relatively high loads can be transferred to the staple to cause the staple to be severed from the strip, peel off the wire insulation and force the stripped wire against the mandrel.

The sliding part 107 is withdrawn and the springs 126 are at the end of the forward stroke of the staple pusher 18 by a relatively small one Electric motor 164 compressed in tool handle 3. A retraction of the slide 107 also causes a retraction of the clip slide 18, since the

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BATH ORIGINAL

Slide 10? is attached to the flattening 104 and the Pins 94 extending through plate 104 extending through the levers 92. The carrier 64 is thus during the rearward movement of the channel part 108 pulled backwards by lever 92.

The retraction of the slide 107 is effected by the plate 150, that with the slide I07 by the fastening device 106 is connected * As best shown in Fig. 10, the mount 106 has a thickened one Head above plate 1 ^ 4 and extends downwards through the coaxial bushings 140, 141 which are mounted in an opening of the plate 150, through the Plate 104, and is screwed into the upper plate I.08 of the sliding part 107. The attachment 106 couples so the plate 150 through the bushings 140, 141 to the sliding part 107. The pins 94 have enlarged collars near their lower ends, which extend through openings 151 of oversize in the front end of the plate 150 extend. These openings allow oversize I5I rotational movement of the plate 150 about the fastener 106 during operation.

The force from motor 164 to retract plate I30 is provided by a pinion I68 on the output shaft of the motor 164 is transmitted to a gear I70. That

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Gear I70 is through a reduction gear set 172, 174- with a splined shaft 176 and a pinion 172 connected, its lower end rotatable in bearings I75 mounted in the frame 5. The shaft 176 extends up through a bearing I8I that rotates in a rear extension I62 of the platform shown in FIG 120 assembled 1st. The shaft 176 carries a plate 177 which is in a stepped, cylindrical housing 180 is contained in the extension 162 through a pin I63 is attached. The circular plate 177 is rotatably connected to the shaft and carries a Pair of swing weights 179 on the underside, which have a semi-cylindrical shape in the surrounding proportion Have a relationship with wave 176. Each of the weights I79 is rotatably mounted on a pin I83, which is extends between plate I77 and gear 174, as shown in FIG. Each weight is included a notch in the periphery in which a felt insert I85 is mounted. The arrangement is like this that when the shaft I76 rotates, the weights 179 also be rotated and strive to become in a counter-clockwise direction around theirs Rotate axes of rotation 183. The felt inserts I85 are so through against the inner surface of the housing I8O the centrifugal force that is developed is pressed around exert a braking effect that. the endeavor has «the Reduce the rotational speed of the shaft and the

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To delay forward movement of the staple pusher 18 while placing an end clamp on an end clamp pin pushes.

The top of the shaft 176 works as a pair in the Spaced pinions 182 which are separated by a collar 184 which is mounted on the shaft is. The pinions I82 mesh with a pair of spaced apart, generally oval rack and pinion gears 186 that act as a rack in a closed circle. The collar 184 of the shaft is received in a path 188 between the racks 186 and creates a store. The rack gears 186 and track 188 are formed on a block attached to a cap portion 190 attached to the rear end of the plate I50 is attached. This plate 150 is provided with an oval opening 192 which is shown in Fig. 11 and through which the rack gears 186 extend.

If the channel part iodine and all parts attached to the component 108 are fixed, move to the left or forwards in Fig. 6 under the influence of the springs 126, the rack gears I86 move in proportion to the fixed pins I82 until the rack gears I86 are in front of the pinions I82. Since the racks 186 must move around the fixed pinion I82

the plate 150 is laterally limited in a . 009813 / 0SÄ9

Move the dimension during the working stroke of the tool, to allow the rack gears 186 to pass the pinions.

At the end of the working or forward stroke, one engages Shoulder 201 on the front of the plate 150 an arm 200 of a miniature switch I98 on / around the Switch to operate and a starting circuit for the motor 164 to close. When the engine 164 is energized, the gears of the gear set 168, I70, 172, 174 and I82 are driven so that the spaced apart Rack gears I86 are driven backwards via the gears, so as to move the plate I50 backwards to pull. During this backward movement of the plate 150 becomes the switch arm 200 in the depressed state held by an arm 194, I96 extending from of plate 150 forward past shoulder 201 extends. After completing this part of the working cycle, the plate X50 will be in the position after Fig. 1 is brought back and the springs 126 are retracted and compressed, the arm 194 moved out of engagement with the switch arm 200 to the To allow switch 198 to return to its normally open state to supply power to turn off engine 164. ·

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1555983 Sun

The arm 194, 19β extends somewhat obliquely to the longitudinal axis of the tool and plate 150, as in Pig. shown. The arm 194, I96 has this shape, so that it remains in contact with the switch arm 200 during the backward movement of the plate 150 and not on Switch arm 200 engages during the forward movement of the plate 150. The above mentioned lateral movement of the Plate 150 ensures that switch arm 200 is in remains in a closed position during the reverse stroke, but is given the opportunity to stay open during the forward stroke of the tool.

When the parts are in the Pig position. I reside If the pistol is locked, the channel-shaped sliding part 107 is attached to it by the trigger mechanism prevented from moving forward. The trigger mechanism actuates the device for the split or interrupted stroke, as mentioned above. As shown in Figures 12-15, the side wall is 110 of plate 108 cut away at 202 on one side while the other side wall 112 is so shaped is that it has a forward sloping edge 204, a straight edge portion 206, a forward facing Shoulder 208, an additional straight edge 210 and a front shoulder 212 that directly is formed in front of section 210. A plate

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is usually against the edges of the side walls 110, 112 and extends rearward through an opening in a flange 216, which is of the Surface of the support platform 120 directed downwards is. The right or rear end 218 of plate 214 is reduced in width to fit through the opening in flange 216. The opening in the flange 216 is slightly wider than part 218 of plate 214 so that the front end of the plate 214 is free to move laterally in its own plane over a certain distance within to move the opening. Eirie opening 219 im End portion 218 of plate 214 is provided for receiving a helical compression spring 220 which bears against the plate 214 at its rear end and against the rear end facing surface of the flange 216 at the front end presses. The spring 220 presses the plate 214 forwards backwards from the tool axis and holds the plate 214 in the position shown in Figures 13-15 left side of plate 214, as shown in Fig. I3-15, has a front and inward sloping edge portion 222 and a front straight edge portion 224. A notch 226 is near the front * the end of the plate is formed and a straight-edged one

Tab portion 224, 228 'extends laterally forward

the notch 226. The plate 214 is usually like shown in Fig. 13, against the edges of the side walls

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009813/0649

110, 112 arranged, the approach 223 in front of the Shoulder 212 is at the start of a work cycle.

The control of the pawl plate 214 is through a Spring plate 2JO causes a pair of spring arms 234, 236 extending forward from a bay, with the adjacent edges of the arms following converge at the front as shown at 238, 240 around to form an opening for a wedge portion 248. The arm 256 of the spring part has a lateral extension 242, which is folded down as shown at 243 to over the Front ends of the two arms 234, 236 to lie. The arm 2 ^ 4 has a relatively short, staggered tongue 244 at its front end, which is offset inwardly from the side, so that the spring part 23O, as in Fig. 13, in overlapping relationship with the plate 214 with the tongue 244 in the notch, 226 can lie. The spring plate 23O is attached to the plate 214 with the aid a short flange 246 on the end of arm 23 $ attached and held in an opening 227 in the Plate 214 hooked 1st.

The spring plate 230 is in position at its rear End held by tongue 252 which extends into spring 218 and through opening 219, and a pair of short extensions 254 on each side of the tongue 232 in order to reach the opposite end of the platform

. ₃₂ . 009813/0649

Original

partly to lie against 218.

The wedge portion 248 is dimensioned to conform to the opening defined by the opposite edges of the arms 236, 234, which ^{abut resiliently against the 1} sides 250 of the wedge. The wedge portion 248 is controlled by a trigger 256 which is rotatable is mounted between its ends on a pin which extends between a pair of vertical flanges or tabs in the frame part 5. The upper end 260 of this trigger extends through the opening 219 of the plate 214 and between the arms 234, 236 of the spring part 230 behind the flange 252. The elasticity of the arms 234, 236 pushes the wedge part 248 backwards into that shown in FIG Position.

The operation of the triggering mechanism is as follows ι If the reciprocating members einschliesslieh of the different plates and the slide part 107 are in the position shown in FIG. .1, the trigger mechanism parts are as shown in Fig. 13. The sliding part 107 is held against forward movement by the laterally extending tab 228 of the plate 214, which protrudes over the shoulder 212 of the side wall 112 and acts as a stop for the sliding part 107.

. 33 -

-. ■■ 009813/06 4 9

BATH

When the trigger 256 is pressed, one results Forward movement of the upper end 26O of this trigger, around the Kellteil 248 from the position of FIG 14 to press the position. The wedge part 248 moves in relation to the spring plate 2j5O and causes the arm 236 to move in a direction im Pivots clockwise about its lower end, as seen in Fig. 14, with the movement of the other arm 2 ^ 4 by the application of the extension 244 of the arm 234 on the side wall part 210 is prevented. There arm 236 on plate 214 through flange 246 is attached, this movement of arm 246 causes plate 214 to move clockwise into position 14 moved to FIG. The extension 228 is thus moved out of its position in front of the shoulder 212 and the sliding part 107 is released to move out of the position according to FIG. 1 under the driving influence of the Springs 126 forward. When the portion 210 of the side wall 112 extends over the extension 244 of the arm 2 ^ 4 moved out, the front end swings of the plate 23O counterclockwise until it reaches the position shown in FIG. This movement of the plate 23O is effected by the spring 220 which brings plate 2JO into axial alignment with channel portion 108. The approach 228 then lies against the shoulder 208, thereby maintaining forward motion of the duct part 208 to create a further forward

- 34 - 0098 13 / 06A9

© AD ORIGINAL

movement of the slide IO7 and the clamp slide 18 - to interrupt. The spring 220 acts as a buffer or shock absorber when the lug 228 is off the shoulder 208 is stopped and protects against the effects of high impact forces on these parts. The parts are like that shown in Fig. 15 in the positions which they assume, after the operator has pressed the trigger 256 for the first time and before releasing the trigger again. Thus, in FIG. 15, the upper part 260 of the The trigger is held against the flange 252 of the wedge member 248 and the Kellteil is held in the position shown in Fig. 15 by the Pressure exerted on the flange by the trigger. When the operator releases the trigger, after he has pulled it off for the first time, the arm 2j} 4 jumps out of its position shown in FIG inward and pushes the wedge portion 248 downward as shown in this figure or on the rear end of the tool. If the arm 2j> 4 is in Fig. I5 moved backwards in this manner, the extension 244 of that arm moves along the side wall and lies against the inner surface of the side wall 112 of the fluid 107. From the above it is clear that the plate 2J0 and the wedge portion 248 are mutually exclusive not only move in their own plane, but also move to the side of their plane during the

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009813/0649

ORiGlMAL BATHROOM

Effects must move those shown in Figs. 15-15 are. ,

The operator then pulls the trigger 256 to

second time to wedge the wedge 248 between the surfaces 2 ^ 8, 240 to press the spring plate 2J5O to the arm 256 to swing clockwise in a way that similar to that described above and shown in FIG. In addition, the extension 228 becomes this Arm is moved out of position against shoulder 208 and slide I07 is back to move forward free. The forward stroke of the staple pusher is then completed under the influence of the springs 126.

The operation of the described embodiment is now summarized as follows. The parts are normally in the position as in Fig. 1 shown with the springs 126 in a compressed condition and with the reciprocating Parts including the slide member I07, the plates 104, 115, 134, the carrier 64 and the clip pusher 18, can be held against forward movement by the trigger mechanism, as described above became. The operator first guides the end portion of a wire through the slot 63 into the hood 62 and into the opening 42 of the dome 56. Then press the operator pulls trigger 256 to release sliding part I07,

-36- 009813/0649

as described above, to be triggered via the first part of the forward stroke. At this point in time, the clamp pusher 18 in FIG. J3 moves forward until it passes the opening 42 in the mandrel and the front clamp onto the front end of the mandrel 36
postpones and a little beyond that. During this part of the cycle, the wire is gripped by the clamp and pulled out of opening 42 and over the top surface of the mandrel; during this part of the cycle the force is transmitted from the slide part 107 to the clip pusher 18 - through the rigid coupling consisting of the force transmission part 127 until that part is released from the underside of the carrier 64 at the end of this part of the cycle
disengage the rigid coupling. During the subsequent parts of the cycle, power is transmitted from the slide I07 to the clip pusher 18 via the plate 104, pins 94, arms 92 and the overload release clutch between those arms and the reciprocating carrier 64.

After completing the first part of the stroke, lay
the operator the tool in alignment with
the end clamp pin with the end of the mandrel 40 against the top of the end clamp pin and with a
Side of the pin against the extension 49 of the
Mandrel blocks. An exact alignment of the tool

. ₅₇ "

0 0 9813/0649

with the end clamp is made easier by the clamp, which hangs over the end of the mandrel and when guiding the end of the end clamp pin against the thorn head helps. The operator then squeezes the trigger 256 a second time to release the slide IO7, thereby removing the moving parts, including of the staple slide l8 by the springs I26 over the The overload release clutch must be pushed forward until the clamp is moved on the end clamp pin. During this part of the cycle, and if the clamp should be moved against a rigid stop, like a previously applied clamp before the forward movement of the parts is complete, the overload becomes off solution coupling between the push rod carrier and the fingers 92 disengaged and the fingers and the remaining parts connected to the sliding part 107 continue to move while the carrier 64 and the staple pusher 18 remain stationary.

The regulating weights I79 work on the plate 177 so that they retard the forward movement of the reciprocating parts. It is obvious that when the channel portion I08 moves forward, it takes the plate 150 with it so that the rack gears 186 are moved in relation to the pinion 182 and cause the shaft I76 by the force of the springs 126 is rotated. Pulling the insert pieces

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009813/0 6 49

185 on the wall of the housing 180 delays the forward movement of the parts so that the expansion of the Springs is dampened and abrupt shocks are avoided. At the end of the forward stroke the switch 198 closed by the front shoulder part 201 of the plate 150, uifd the motor 16 ^ is thereby under Power is applied to rotate pinion 168. This pinion, which is driven by the gear set 170, I72, 17V and 182 acts, drives the rack gear 186 backwards in FIG. and moveable parts withdrawn and springs 176 compressed.

- 39 - 0098 13/0649

Claims (1)

Patent claims: 1. Tool with a reciprocating plunger which is held in a frame, characterized in that the plunger (18) is arranged so that it can be driven in one direction by releasing an elastically deformed elastic part (126), which is held in the frame and is coupled to a reciprocating rack gear (I86), which gear (I86) can be driven by a motor (164) through a rotatable pinion (182) which is attached to the rack part (156) elastically engages to deform the elastic part {126), a releasable pawl (228, 212) being arranged to hold the elastic part (126) in the elastically deformed state, thereby releasing the pawl (228, 212) allows the elastic component (126) to drive the plunger (18) in one working stroke and the work of the motor (164) brings the elastic part (126) back into the latched, deformed state for a further working stroke. 2.) Tool according to claim 1, characterized in that the motor (164) is a switch-controlled electric motor which drives the pinion (I82) through a reduction gear ~ ⁴⁰ " 009813/0649 set of wheels (168, 170, 172, 174) drives. >. Tool according to claim 2, characterized in that that the rack gear part (186) is coupled to a reciprocating slider (107) which is arranged so that it is moving backwards compresses a helical compression spring (126) which is the elastic member, the slider (107) coupled to the slide (18) for the reciprocating movement of the slide (18) with the sliding part (107) is. 4. Tool according to claim 3, characterized in that that the sliding part (I07) is coupled to the ram (18) by a releasable rigid coupling (127) and an overload release clutch (84, 85, 90) is present in a parallel acting relationship, wherein the rigid coupling (I27) can be released after an initial forward movement of the plunger (18), so that a subsequent driving of the plunger (18) in its working stroke by the overload release clutch (84, 85, 90) is effected, the rigid coupling (127) during a backward movement of the sliding part (107) is adjustable again. 5. Tool according to claim 3, characterized in that - 41 - 009813/0649 BÄÖ that the forward movement of the sliding part (107) by another releasable pawl (228, 208) is controlled, whereby an initial forward movement of the Sliding part (107) when the first releasable pawl (228, 212) is triggered after a predetermined distance is stopped by a further releasable pawl (228, 208) and when the further releasable pawl is released The pawl (228, 208) of the sliding part (107) is free to its To complete forward movement under the influence of the spring (126). 6. Tool according to claim 2, characterized in that that the sliding part (107) is arranged to switch the switch (I98) that controls the motor (164), actuated at the end of its forward travel to activate the motor (164) to drive the rack and pinion portion (186) to re-tension the spring (126) and when re-tensioning the spring (126) in the latched state (228, 212) to operate the switch (198) to switch off the motor (164). 7. Tool according to claim j3 * characterized in that that the gear set (I68, 170, I72, 174) one Flywheel (179) including a centrifugal brake device (185) drives and the rack and pinion part (I86) the braking device (179 * I85) through the set of gears (168-174) as it moves forward - 42 - 009813/0649 . propels, increasing the speed of forward movement of the plunger (18) is limited. 8. Tool according to claim 2, characterized in that the rack gear part (186) is a rack (186) has a closed shape of generally oval circumference, in an elongated direction towards the reciprocating movement is lengthened and the rack gear part (186) is movable laterally, to allow the pinion (I76) to have this rack gear part (186) to attack around its perimeter. 9. Tool according to claim 8, characterized in that that the rack gear part (186) rotates (IO6) with the sliding part (107) at the front of the rack (I86) is connected, causing a rotational movement of the component (186) in relation to the sliding part (107) the lateral one Movement of the rack gear (186) in relation to the pinion (I76) makes possible. 10. Tool according to claim 9, characterized in that the rack and pinion wheel part (I86) has a front shoulder (201) which is arranged to be connected to a motor switch (200, 198) at the end of the VorWIrllibewegUng of the sliding part ^; (107) attacks and a ^ ritr extends forward from the shoulder (201)> which is arranged to act as a result of the "- -4» 0098 1 3 / 06Λ9 © AP Rotational movement of the rack gear part (186), when the rack part (186) is moved backwards by the pinion (1J6) , the arm (194) holds the switch (200, 198) in a closed position until the rack gear part (186) has a Has reached the limit of its rearward movement and the elastic part (126) is returned to the latched elastically deformed state. 11. Tool according to any of the preceding Claims, characterized in that the Tool ram (l8) is designed with a front end (27, 30) engaging the workpiece and running along a mandrel (36) for holding the workpiece can be pushed back and forth, the ram (18) so is arranged to move forward past a front end (49) of the mandrel (36). 0 09813/0649 L e r s e ί t e