CN101224487B

CN101224487B - Drive of easy squeeze blind rivet gun

Info

Publication number: CN101224487B
Application number: CN2008100195979A
Authority: CN
Inventors: 孙延新; 曾子斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-25
Filing date: 2008-01-25
Publication date: 2010-07-28
Anticipated expiration: 2028-01-25
Also published as: CN101224487A

Abstract

The invention relates to a device which uses a rivet, in particular to the driving device of a hand riveter. According to the technical proposal which is provided by the invention, the convex part of a ball hand wheel is inserted into a dent which is arranged on a pulling rod; the left end surface and the right end surface of the ball hand wheel are respectively attached to a thrust bearing; the shaft holes of the two thrust bearings are internally provided with deflection cams which are connected into a whole with the shaft; the end of the shaft is arranged in the bearing which is supported on the shell; the deflection cam is connected with the mainshaft of a gearbox by the shaft. The invention has the advantages of compact structure, convenient application, strong force, and avoiding the hidden trouble which is possible to be brought by error operations.

Description

The drive unit of hand riveter

Technical field

The present invention relates to a kind of device that uses rivet, be meant a kind of drive unit of hand riveter especially.

Background technology

The at present general hand riveter that uses has two types of type hand and air-driven types.These two kinds of hand riveters respectively have its shortcoming.Wherein, the defective of type hand hand riveter is: production efficiency is low, causes physical fatigue easily; The defective of air-driven type hand riveter is: needs to be equipped with air pump in the use power source is provided, and cumbersome, have noise pollution simultaneously.

Summary of the invention

The objective of the invention is to design a kind of drive unit of hand riveter, with simplified structure, the convenient use strengthens outputting power, avoids the hidden danger that may bring because of maloperation.

According to technical scheme provided by the invention, the lug boss that bulb is pulled wheel inserts in the depression that is arranged on the pull bar, the left and right both ends of the surface that bulb is pulled wheel are fitted on the thrust bearing respectively, the beat cam is arranged in the axis hole of two thrust bearings, the beat cam is connected as a single entity with axle, the end of axle is installed in the bearing, and bearings is on housing, and the beat cam utilizes axle to link to each other with the main shaft of gear-box.

The control device of drive unit comprises the return spring that is positioned at the shift knob right side, the right-hand member of return spring is fixed in the housing, shift knob links to each other with fork by the protruding pin on it, on fork, be provided with back-moving spring, one end of fork is connected with the beat device, the right side of beat device is the cam set that is installed on the main shaft, main shaft is connected with the power transmission shaft of gear-box, main shaft drives on the cam set the different concavo-convex contacts beat device of naming a person for a particular job and backs down certain angle when rotating, another end points of fork is relative with the contact of microswitch to produce motion, realizes the start and stop of motor.

Compact conformation of the present invention, easy to use, it is powerful to exert oneself, the hidden danger of having avoided maloperation to bring.

Description of drawings

Fig. 1 is an overall structure cutaway view of the present invention.

Fig. 2 is one of user mode figure of the present invention.

Fig. 3 is two of user mode figure of the present invention.

Fig. 4 is control circuit figure of the present invention.

Fig. 5 is the stereogram of switch.

Fig. 6 is a kind of flat state figure of switching device.

Fig. 7 is the another kind of flat state figure of switching device.

Fig. 8 is the state diagram after rivet penetrates workpiece.

Fig. 9 is the state diagram after the end surface of rivet is out of shape.

The specific embodiment

The invention will be further described below in conjunction with concrete drawings and Examples.

As shown in the figure: in housing 21, be set with nail mouth 1, offer the through hole 28 that inserts rivet on the nail mouth 1, in the housing 21 of nail mouth 1 one sides, slidely connect the staking device, the glide direction of this staking device is consistent with the axis direction of through hole 28, is provided with to drive drive unit and the control device thereof that the staking device slidably reciprocates with respect to nail mouth 1 work in housing 21.

Described staking device comprises the pawl pin fixator 3 that is arranged on nail mouth 1 right side, in pawl pin fixator 3, be provided with pawl pin 2, the right side of pawl pin 2 is provided with and its right side contacted pawl pin compactor 4, this pawl pin compactor 4 is arranged in the installing hole 29 of pull bar 6 left side sections, be provided with holddown spring 5 in the installing hole 29, the left end of holddown spring 5 withstands on the right side of pawl pin compactor 4, and pawl pin fixator 3 is fixedlyed connected with pull bar 6.

The right section of pull bar 6 is provided with the dumping pit 30 coaxial with installing hole 29, and the diameter of dumping pit 30 makes the dumping pit 30 and the junction of installing hole 29 form step less than installing hole 29 diameters, with dumping pit 30 corresponding shell 21 on be provided with discharge port 32.The right section diameter of pull bar 6 makes pull bar 6 peripheries stepped less than the diameter of its left side section, and the right section of pull bar 6 is slidingly matched with the slide 34 interior slide holes that are provided with, and slide 34 is installed in the housing 21.

In drive unit, the lug boss that bulb is pulled wheel 11 inserts in the depression that is arranged on the pull bar 6, the left and right both ends of the surface that bulb is pulled wheel 11 are fitted in respectively on the thrust bearing 10,12, in the axis hole of two thrust bearings 10,12, beat cam 20 is arranged, beat cam 20 is connected as a single entity with the axle (not shown), the end of axle is installed in the bearing 7, and bearing 7 is supported on the housing 21, and beat cam 20 utilizes axle to link to each other with the main shaft 16 of gear-box 17.

The control device of drive unit comprises the return spring 27 that is positioned at shift knob 26 right sides, the right-hand member of return spring 27 is fixed in the housing 21, shift knob 26 links to each other with fork 24 by the protruding pin on it, on fork 24, be provided with back-moving spring 25, one end of fork 24 is connected with beat device 22, the right side of beat device 22 is the cam set 15 that is installed on the main shaft 16, main shaft 16 is connected with the power transmission shaft of gear-box 17, drive on the cam set 15 the different concavo-convex contacts beat device 22 of naming a person for a particular job when main shaft 16 rotates and back down certain angle, another end points of fork 24 is relative with the contact of microswitch 14 to produce motion, realizes the start and stop of motor.

The front/rear end of pawl pin 2 is interior inclined-plane, the interior inclined-plane of the front portion of pawl pin fixator 3 for matching with the outer inclined-plane of pawl pin 2, and the front end face of pawl pin compactor 4 is the outer inclined-plane that cooperates with the rear end face of pawl pin 2.

In the present invention, beat cam 20, thrust bearing 10, thrust bearing 12, bulb are pulled wheel 11 and with pull bar 6 motor 19 rotatablely moving of output are converted into the rectilinear motion of pull bar 6 by deflection device, and the bulb drive pull bar 6 that beat cam 20 is pulled wheel 11 by bulb is realized reciprocating transmission.

Nail mouth 1 is fixed on by being threaded on the housing 21, pushes down the front end of pawl pin 2 simultaneously, contacts at both under the effect on inclined-plane to make pawl pin 2 endoporus be in expansion state; Built-in holddown spring 5 of the front end reaming of pull bar 6 and pawl pin compactor 4, the front end face of pawl pin compactor 4 is inclined-planes, and under the effect of holddown spring 5, the front end inclined-plane of pawl pin compactor 4 contacts with the back bevel of pawl pin 2, make the rear side of pawl pin 2 that a power of outwards backing down be arranged all the time, be beneficial to put nail; The front end face of pawl pin 2 is outer inclined-plane, and the front portion of pawl pin fixator 3 is the interior inclined-plane that matches with the outer inclined-plane of pawl pin 2, the rear threads of pawl pin fixator 3 (see figure 2) that is connected with pull bar 6; When pull bar 6 is mobile backward, move after the pawl pin fixes 3, move after driving pawl pin 2, and that nail mouth 1 is fixed is motionless, rivet is loosed core and 35 is broken (Fig. 2,3), rivet loose core 35 from pull bar 6 intermediate throughholes come off see shown in Figure 3; When pull bar 6 reach, pawl pin fixator 3 resets, and pawl pin compactor 4 resets under the effect of holddown spring 5 simultaneously, and pawl pin 2 expansion that resets realizes the week of circulating, and self-return is seen Fig. 3.

Cam set 15 is provided with two groups of different time mechanical contacts, can trigger the break-make of two control loops.Press shift knob 26, make fork 24 interlocks that are installed on the button 26, the top is to microswitch 18, make microswitch 18 conductings, connect power supply, motor 19 is started working, and makes main shaft 16 rotations by gear-box 17, the cam set 15 that drives on the main shaft 16 is rotated, contact 40 on the microswitch 14 is interior upwards mobile from the concave point 41 on the cam set 15, and contact 40 drives the lever 43 of microswitches 14, makes microswitch 14 conductings, this moment, position shown in Figure 2 was seen in microswitch 18 and all conductings of microswitch 14.

When cam set 15 rotates to 1/4 circle, another group cam set 15 is backed down certain angle with beat device 22, fork 24 beats that beat device 22 is driven on the shift knob 26, and disconnection by force resets microswitch 18, this moment, microswitch 14 also in conducting, made motor 19 continue maintenance work.When cam set 15 rotated to original position, microswitch 14 resetted, motor 19 outage and short circuits, the motor side line forms the closed-loop path, produce brake and suddenly stop, staking system and control system are just in time all got back to original state, and needing once more, start could start once more.

The rotating shaft of motor drives the one group of change gear box 17 that is attached thereto, through main shaft 16 outputs, drive beat cam 20 rotations on the axle, drive the bulb that is enclosed within on the beat cam 20 immediately and pull wheel 11 swings, circular motion is converted into rectilinear motion, and bulb is pulled the axial restraint of wheel 11 on beat cam 20 and is finished by 10,12 and two

fastening nuts

9,13 of two high thrust bearings.The bearing 7 that the preceding point of beat cam 20 supports by low thrust bearing 8 and model 6000 constitutes.Bulb is pulled wheel 11 other end cylinder lever connecting rods 6, produces front-rear reciprocation movement thereby drive pull bar 6.

Utilize the inward hole slope of pawl pin fixator 3, the comfortable axial relative motion of the outer inclined-plane of pawl pin 2 and each realizes the expansion of pawl pin endoporus and dwindles, thereby realizes rivet loose core 35 disengagement and clamping.Utilize the axially motion backward of pull bar 6 to drive 35 motions backward together of loosing core of pawl pin 2 and clamped rivet, realize loose core 35 break of rivet, finish riveted joint.

Specific implementation process: be in foremost at original state (promptly treating duty) pull bar 6, nail mouth 1 is fixed on the housing 21 by being threaded, push down the front end of pawl pin 2 simultaneously, contact at both under the effect on inclined-plane, make the endoporus of pawl pin 2 be in expansion state, the outer inclined-plane of pawl pin 2 and the interior inclined-plane of pawl pin fixator 4 are in disengaged position at this moment.When starting working, rivet loosed core 35 insert answer back 1 the endoporus and the endoporus of open pawl pin 2, the end surface 37 of rivet 36 is touched fully answer back 1 front end face.During riveted joint, pull bar 6 begins to shrink back, and previous stage, the front bevel of pawl pin 2 contacts 1 the back bevel of answering back under the effect of holddown spring 5.Produce relatively between the inclined-plane simultaneously and slide, constantly dwindle, loose core 35, see Fig. 8 until crimping rivet at the endoporus of this process median claw pin 2.Pull bar 6 continues to retreat, when pawl pin fixator 3 contacts with pawl pin 2, pawl pin 2 is loosed core with rivet and 35 is retreated with pull bar 6, in this process, the end surface 37 of rivet 36 is fitted on the front end face of following closely mouth 1 and can not retreats with pull bar 6, loose core 35 head 39 of rivet is broken thus, and the end surface 37 of rivet 36 is extruded distortion, realizes riveted.Rivet looses core 35 by after being broken, pull bar 6 continues to retreat, until the rearmost point that reaches stroke, pull bar 6 begins to move ahead then, answer back 1 the time when pawl pin 2 touches, the effect lower claw pin 2 on the inclined-plane begins to open, when pull bar 6 reaches the point foremost of stroke, the endoporus of pawl pin 2 opens up into maximum, is loosed core 35 to deviate from the hollow hole of pull bar 6 by the rivet broken.So far be returned to original state.Finish an operation cycle.Among Fig. 5,6 38 is workpiece to be riveted.

Utilize cam set mechanism, two groups of different time mechanical contacts are set, when one group of conducting, machine operation, another group of conducting when cam rotates.A certain position in the cam rotation process, one group of disengagement, another group works on.Change when complete week getting back to original position when cam set, another organizes disengagement, realizes in the time of disengagement the motor short circuit realizing braking on circuit, finishes a circulation, gets back to original state.

Press shift knob 26, make fork 24 interlocks that are installed on the button 26, the top is to the contact of microswitch 18 N _CMake microswitch 18 conductings connect power supply, motor M (being 19 among Fig. 1) starts working, make main shaft 16 rotations, the cam set 15 that drives on the main shaft 16 is rotated, contact 40 on the microswitch C2 (being the microswitch 14 among Fig. 1) is interior upwards mobile from the concave point 41 on the cam set 15, contact 40 drives lever 43 (actual is a rubber-like reed) and moves, it (is Fig. 5 that lever 43 impels the contact No of microswitch C2 again, contact 40 in 6) conducting, this moment microswitch C1 (being the microswitch 18 among Fig. 1) and microswitch C2 all conducting (see Fig. 2, position shown in 9), when cam set 15 rotates to 1/4 circle, salient point 42 on another group cam set 15 backs down certain angle with beat device 22, make beat device 22 drive fork 24 beats on the shift knobs 26, by force with the contact N of microswitch C1 _oThe disconnection (seeing Fig. 5,6) that resets, this moment, microswitch C2 also in conducting, made motor M continue maintenance work.When cam set 15 rotates to original position when concave point 41 on the cam set 15 overlaps (microswitch C2 upper contact 40 with), the contact N of microswitch C2 _CThe disconnection that resets, motor M outage and short circuit, the motor side line forms the closed-loop path, produces that brake is anxious to stop, and gets back to original state, finishes a circulation.Foregoing circuit is partly seen Fig. 4.

Claims

1. the drive unit of a hand riveter, it is characterized in that: the lug boss that bulb is pulled wheel (11) inserts in the depression that is arranged on the pull bar (6), the left and right both ends of the surface that bulb is pulled wheel (11) are fitted in respectively on the thrust bearing (10,12), beat cam (20) is arranged in the axis hole of two thrust bearings (10,12), beat cam (20) is connected as a single entity with axle, the end of axle is installed in the bearing (7), bearing (7) is supported on the housing (21), and beat cam (20) utilizes axle to link to each other with the main shaft (16) of gear-box (17).

2. the drive unit of hand riveter as claimed in claim 1, it is characterized in that: the control device of drive unit comprises the return spring (27) that is positioned at shift knob (26) right side, the right-hand member of return spring (27) is fixed in the housing (21), shift knob (26) links to each other with fork (24) by the protruding pin on it, on fork (24), be provided with back-moving spring (25), one end of fork (24) is connected with beat device (22), the right side of beat device (22) is the cam set (15) on the main shaft (16) that is installed on gear-box, the main shaft of gear-box (16) is connected with the power transmission shaft of gear-box (17), the cam set (15) that the main shaft of gear-box (16) drives when rotating goes up the different concavo-convex contacts beat device (22) of naming a person for a particular job and backs down certain angle, another end points of fork (24) is relative with the contact of microswitch (14) to produce motion, realizes the start and stop of motor.