CN1065010C

CN1065010C - Brake and restarting device for independent driven spindle in spinning machine

Info

Publication number: CN1065010C
Application number: CN971143498A
Authority: CN
Inventors: 田中丰; 浅川良治; 铃木进
Original assignee: TOYOKATA INDUSTRY Co Ltd
Current assignee: TOYOKATA INDUSTRY Co Ltd
Priority date: 1996-11-12
Filing date: 1997-11-12
Publication date: 2001-04-25
Anticipated expiration: 2017-11-12
Also published as: CN1190679A; EP0841416A1

Abstract

Regarding an independently driven type spindle in a spinning machine, when a yarn breakage is occurred in a spindle 10, a brake operating member 35 of the spindle 10 is moved toward a spindle shaft 13. During the movement of the brake operating member 35, control surfaces 49 thereof cause the stop/restart switches 46 and 47 to be made OFF between the electric driving motor 20 and alternate current lines S and T, thereby causing the motor 20 to be rotated under its own momentum. Then, braking parts 34 of the brake operating member 35 is pressed to the outer peripheral surface of the spindle shaft 13, thereby executing a mechanical braking operation. After the withdrawal of an end of broken yarn, the brake operating member 35 is released, so that a force of the springs 41 causes the brake operating member 35 to be detached from the spindle shaft 13, thereby canceling the braking operation. The movement of the brake operating member 35 also causes the stop/restart switches 46 and 47 to be made ON, thereby restarting the drive motor 20.

Description

A kind of single in the spinning machine drives spindle and braking/the restart device of this spindle

The present invention relates to a kind of spinning machine,, have the motor that is used for each spindle of drive on it as ring throstle or ring doubling frame.The present invention be more particularly directed to when Yarn break occurring, to the braking of this spinning machine with restart.

In the known ring throstle of prior art, a plurality of spindles of the yarn that is used to reel by separate connection to the corresponding driving motor.In the ring throstle with this independent spindle drive system system, all spindles are realized rotating synchronously by the corresponding driving motor usually.On the other hand, be used for braking selectively and restart that the switch of CD-ROM drive motor is also independent to be provided with for corresponding spindle.Therefore, when Yarn break occurring on the spindle, the operator will place OFF corresponding to the switch of spindle, thus for allow the operator break end yarn bonding operation and brake CD-ROM drive motor on the corresponding spindle.After joint was finished, the operator made respective switch place ON, so that corresponding spindle is restarted.Foregoing can referring to, for example Japanese unexamined patent, publication number (Kokai) are NO.6-57549.

As another correlation technique, Japanese unexamined patent, publication number (Kokai) be a kind of fine spining machine for NO.2-160934 has disclosed, and this fine spining machine has independent spindle drive system system, and this system comprises the independent drive motors that is used for corresponding spindle.In fine spining machine, each spindle all has fixed brake apparatus, is used to prevent that spindle is subjected to can causing in addition its counter-rotational torsion.But this prior art does not relate to when Yarn break occurring, to the independent brake of spindle.

Figure 20 has schematically described the basic driver device between spindle in a kind of prior art, and wherein spindle SP independently is provided with electric drive motor in groups.M1-M6 is one group of CD-ROM drive motor.In other words, each group includes six motors.For the independent brake/restart operation of CD-ROM drive motor M1-M6 in the groups of motors is provided with control circuit S1-S6.These control circuits S1-S6 that is used for each group CD-ROM drive motor M1-M6 is combined into a single control circuit board S0.CD-ROM drive motor is generally driven by three-phase alternating current, uses a direct current to obtain being used to brake the brake operating of CD-ROM drive motor simultaneously.Therefore, the control circuit board between each group is connected to an AC power AC and is connected to a direct current power supply DC by connector X and DC circuit L2 by connector X and alternating current circuit L1.In addition, for each spindle switch SW 1-SW6 is set and control circuit S1-S6 is made of the sequence circuit that comprises the relay that has contact.Described relay is by switch SW 1-SW6 control, and its control mode should be connected with dc source and makes electro-motor when AC power disconnects at electro-motor, and electro-motor can make electro-motor disconnect from dc source with being connected of AC power.

In above-described prior art, with one group in predetermined number spindle correspondent control circuits S1-S6 be combined into a single circuit plate S0.But in a fine spining machine, the sum of spindle can reach hundreds of, thereby also can cause the total corresponding increase of control circuit board S0.In addition, with reference to accompanying drawing 1, as explained above, each control circuit board S0 all is connected to and adds up to five, promptly comprise on the circuit of three three-phase circuit L1 and two DC circuit L2, the result, the tie point sum that is made of connector X increases greatly, cause the chance of bad electrical connection to increase thus, thereby cause the operating reliability of spinning machine, as the reduction of brake operating reliability.In addition, owing to will utilize direct current to realize braking action, so except AC power AC, also dc source DC must be set.In addition, each spindle must be provided with a sequential control circuit that is used to obtain reliable conversion operations between alternating current circuit and DC circuit, and this circuit can improve the cost of control circuit S0 and improve the cost of spinning machine.

One object of the present invention is in the primary drive system spinning machine between spindle, and an equipment that is used to brake/restart spindle is set, and reduces the contact point number that is used to be electrically connected with this, thereby increase the reliability of operation when reducing cost.Another object of the present invention is to provide spindle with braking and refire capability.

To achieve these goals, in fine spining machine, be provided with an equipment that is used for braking spinning machine one independent driven spindle, wherein said spinning machine has a plurality of spindles, has the independent electric drive motor that is used for corresponding spindle on the spindle, each CD-ROM drive motor is powered by alternating current circuit, it is characterized in that described spindle comprises a brake apparatus, be used for when Yarn break occurring, spindle being carried out the mechanical braking operation, reach one and brake/restart switch, this switch CD-ROM drive motor and being connected of described alternating current circuit is converted to ON or OFF with described spindle only when Yarn break appears in spindle.

Be different from DC braking of the prior art, according to this structure, owing to carry out the braking of spindle by the mechanical braking effect, this just might save a DC power supply at least, the DC power cable with being electrically connected and being used to control the circuit of switching motion between AC and DC power supply of DC power supply, thereby is made described device with low cost, and promptly use mechanical braking/restart mechanism to substitute the described element that is omitted, also can improve the reliability of operation and reduce electric fault.

Be preferably frictional resistance and be applied to both sides with respect to the spindle axis of spindle axis, brake apparatus is braked a spindle axis.Even more ideal is that brake force is applied on the spindle axis with the direction that is transverse to the spindle rotation axis usually.According to these structures because when the pivot center of spindle axis is mediate, brake force from the both sides synchronous effect in spindle axis.Therefore,, also can prevent the eccentric brake force that produces with respect to spindle axis, thereby in the gap spindle axis be braked reposefully keeping with preset distance between CD-ROM drive motor rotor and the stator even spindle axis structurally easily produces vibration.Specifically, when device is suitable for the direction that is transverse to the spindle rotation axis usually spindle axis being applied brake force, can make to act on to reduce and eliminate generation of vibration in order to the power on the parts of supporting spindle axis.

Brake apparatus and braking/restart switch preferably to adopt such contact to each other by driving brake apparatus, are braked/are restarted switch and make the AC power supplies circuit disconnect and make the spindle axis braking from CD-ROM drive motor.According to this structure, because it is controlled with the driving of brake apparatus to brake/restart switch, so improved operability.In addition, brake apparatus and braking/restart switch preferably to adopt such contact to each other, braking action by the brake off device, braking/restart switch makes the AC power supplies circuit link to each other with CD-ROM drive motor, or brake apparatus and braking/restart switch preferably to adopt such contact to each other, even the braking action of brake apparatus is disengaged, braking/restart switch keeps the AC power supplies circuit is linked to each other with CD-ROM drive motor, after this, wait for the position by making brake apparatus return one, thereby the AC power supplies circuit is disconnected from CD-ROM drive motor.According to above content, when spindle when the state that is braked is started once more, improve operating characteristics equally.

Specifically, brake apparatus comprises that one movably brakes control piece between application position and holding fix, one brake portion, this part by the braking control piece on braking direction motion and form pressure with spindle axis and contact, and one activate part, is used to operate braking between between AC power supplies circuit and CD-ROM drive motor/restart switch.

Spindle of the present invention is characterised in that: in order to the shell of the CD-ROM drive motor of the spindle axis that drives spindle one brake apparatus and that is used for the mechanical braking spindle axis is set and only is used to disconnect/connect the braking that is connected between CD-ROM drive motor and AC power supplies circuit/restart switch.Because spindle and brake apparatus and braking/restart switch and constitute an integral body, thereby its mounting means is just more easy.

Equally, in this spindle, brake apparatus and braking/restart switch preferably to adopt such contact method, by driving brake apparatus, brake/restart switch AC power supplies circuit and CD-ROM drive motor are disconnected, thereby improve operability.For example, brake apparatus comprises that one movably brakes control piece between application position and holding fix, one brake portion, this part by the braking control piece on braking direction motion and form pressure with spindle axis and contact, and one activate part, be used to operate braking between between AC power supplies circuit and CD-ROM drive motor/restart switch, even wherein be disengaged owing to brake portion makes braking action, actuation part also can make brakes/restarts that switch remains on the OFF state so that AC power supplies circuit and CD-ROM drive motor disconnect, and brake off/the restart maintenance action of switch by making the braking control piece return holding fix.

Has the braking control piece that to clamp spindle axis bifurcated front end, preferably be installed on the shell rotating up and down, and the brake portion that is arranged on braking control piece front end contacts with the formation of spindle axis flange with along the spindle axis axis direction, a downward pressure is applied on its upper face, thereby further eliminates the generation of eccentric brake force effectively.

Equally, according to the present invention, the brake apparatus that is used for the spindle axis of mechanical braking list driving spindle is movable type.Because brake apparatus is portable, in corresponding spindle, brake apparatus needn't be set, consequently reduced number of spare parts.Therefore, avoided loaded down with trivial details assembly manipulation also the possibility that mechanical breakdown produces to be reduced.

Portable brake apparatus preferably has fastener and the braking control piece that engages with single driving spindle in separable mode, this control piece has and can form the brake portion that pressure contacts with spindle axis, wherein when fastener engaged with single bonding part that drives spindle, brake portion formed pressure with spindle axis and contacts.According to this structure, because brake component itself forms a kind of brake apparatus, thereby can reduce the weight of the number and the portable brake apparatus of part, these characteristics are suitable for portable brake apparatus.Described portable brake apparatus preferably has one and activates part, and when fastener engaged with single driving spindle, this actuation part can drive one braked/restart switch between between AC power supplies circuit and CD-ROM drive motor.According to this structure, be to move owing to brake/restart switch, thereby promoted operability by the bonding operation of portable brake apparatus.

Below, embodiments of the present invention are described with reference to the accompanying drawings, wherein:

Fig. 1 is a single sectional side view that drives spindle.

Fig. 2 is one along the profile shown in Fig. 1 center line II-II.

Fig. 3 is one along the profile shown in Fig. 2 center line III-III.

Fig. 4 is a line map.

Fig. 5 is the front view of another embodiment.

Fig. 6 is the plane of Fig. 5.

Fig. 7 is the right side view of Fig. 5.

Fig. 8 is the front view of an expression mode of operation.

Fig. 9 is the plane of Fig. 8.

Figure 10 is the right side view of Fig. 8.

Figure 11 is a side cut away view, is depicted as single another embodiment that drives spindle.

Figure 12 is the plane of Figure 11.

Figure 13 is along the profile shown in Figure 11 center line XIII-XIII.

Figure 14 is along the profile shown in Figure 11 center line XIV-XIV.

Figure 15 is similar to Figure 14, but is used for the view of another shape of description operation part.

Figure 16 is the profile that is used to illustrate different embodiment of brake apparatus.

Figure 17 is the plane of Figure 16.

Figure 18 is the profile that is used to illustrate different embodiment of brake apparatus.

Figure 19 is the plane of Figure 18.

Figure 20 one is used to illustrate the view of prior art.

In Fig. 1, one step rail 1 is set along a front side of the frame of a ring throstle.The a plurality of independent driven spindles that are provided with preset space length along the length direction of frame (below, be called spindle) 10 are set on the step rail 1.Each spindle 10 all has a bolster 11, and this bolster is inserted in the installing hole 1a of step rail 1 and by a nut 2 and is fixedly connected on this place.Be equipped with an electro-motor 20 in each driven spindle 10, this motor has a motor case 30 with respect to bolster 11 formation one.

Spindle 10 is made into one 13, which is provided with the bobbin insertion portion 13a that is used to insert a bobbin (not shown), a base part 13b who extends downwards from bobbin insertion portion 13a and one and axle 13 are coaxial and from the base part 13b small diameter portion 13c of extension downwards.Described small diameter portion 13c is in its top and bottom, and the supporting arrangement 14 and 15 by the perpendicular separation setting is supported on the bolster 11 rotationally, can allow spindle axis 13 to move up simultaneously.Lower support device 15 is made of a plurality of elements, these elements can radially move and can radially inwardly promote towards spindle axis by an appropriate device, so that constitute a kind of vibration absorber of the vibration that is produced can cushion spindle axis 13 high speed rotating the time, thereby eliminate operating noise.That is, because this structure, spindle can make upper support device 14 swings into fulcrum.

CD-ROM drive motor 20 also comprises a rotor 21 that fixedly installs around spindle axis 13 base portion 13c except that comprising shell 30, and a stator 22 that is set at shell 30 inside.Between rotor 21 and stator 22, there is clearance t, to realize rotation effectively.

Shell 30 is as an assembly that is made of a body 31, and this body has a space that is used to assemble a motor 20 and a lid 32, brakes except that being equipped with in described body/

restarts switch

46 and 47, and the part of a brake apparatus 40 of the present invention also is housed.

As shown in Figure 2, described brake apparatus 40 comprises one watt of shape fixture 33, and this fixture constitutes the elastic component as the sheet spring that a shape is C shape substantially, reaches a braking control piece 35 that is used to produce brake operating.Described watt of shape fixture 33 has a base portion 33a and a pair of arm (bifurcated) 33b of portion between the antetheca 31a of the antetheca 32a of lid 32 and body 31, between described arm 33b, be provided with spindle axis 13, its set-up mode should overcome spring force and radially inwardly when axle 13 moves at described arm 33b, under the spring force effect of fixture self, described arm 33b is radially pushed outwards moving from axle 13.In addition, be arranged on the terminal tangible all-in-one-piece brake portion of arm 33b (brake scotch) 34 that has the certain intervals position with respect to the diametric(al) of spindle axis 13.When brake scotch 34 is in compressive state with respect to the surface of spindle axis 13, can produce frictional resistance, so that spindle is subjected to braking control.

As shown in Figure 2, braking control piece 35 has a forked section 36 that is made of a pair of arm 36a, and described arm 36a has at the sidewall of the arm 33b of fixture 33 and covers end between 32 sidewalls.In addition, in its end, each arm 36a all has a folder clevis of outwards opening and holds part 37.At braking control piece 35 rear side relative with arm 36a, have a narrow width tongue-shaped member 39, this tongue-shaped member is inserted in that to be formed on a rectangle fenestra 38 that covers on the 32 1 rear wall 32b interior and protruding from this.As shown in Figure 3, lid 32 has the opposing sidewalls 32-1 that is formed with guide groove 32c so that the arm 36a of braking control piece 35 can be inserted in these grooves respectively slidably so that make parts 35 can carry out towards with motion away from axle 13.Braking control piece 35 as shown in Figure 2, at the arm 36a of braking control piece 35 with cover between the antetheca 32a of 32 inside, is provided with spring 41, so that often can carry out motion away from lid 32 antetheca 32a with right-hand lay among Fig. 2.Like this, as long as braking control piece 35 is not under pressure, holder 37 just can engage with being formed on each brake portion 43 that covers on 32 in its end, thereby causes braking control piece 35 to be in the holding fix shown in the solid line A among Fig. 2.

In Fig. 2, the arm 36a of braking control piece 35, side has along the inclined-plane 36b that backward directions diminish gradually within it.Therefore, at brake component from holding fix A to the application position B shown in the dotted line between moving period, the inclined inner surface 36b of the arm 36a of braking control piece 36 contacts with the arm 33b of watt shape fixture 33, so that brake scotch 34 radially moves inward towards the outer surface of spindle axis 13, thus the brake operating of beginning spindle axis 13.Otherwise under the elastic force effect of watt shape fixture 33, braking control piece 36 makes brake scotch 34 separate from the outer surface of spindle axis 13 with reciprocal athletic meeting, thereby eliminates brake operating.

As shown in Figure 2, braking control piece 36 is formed with control section 45 between arm 36a and narrow width segments 39, so that make control section 45 the width that is positioned at narrower part 39, from described narrow wall part 39 to the position of outside fix, relative with the braking of lid on 32/restart switch 46 and 47.Each is braked/

restarts switch

46 and 47 and is and has the normally closed ON/OFF type switch that contact in closing and have a control piece 48, thus this control piece by the spring promotion so that make the control piece 48 common protruding positions that make switch be in ON.When control piece 48 was inwardly depressed, switch was placed in the OFF position.The control section 45 of switch control piece 36 can combine with the control piece 48 of

switch

46 and 47 selectively.Control section 45 is formed with a cam surface (inclined-plane) 49 that combines with control piece 48.Promptly, at braking control piece 35 from holding fix A to operating position B between moving period, cam surface 49 contacts with control piece 48, so that the latter inwardly moves, thereby make switch move to the OFF position, otherwise, the braking control piece 35 from operating position B between the moving period of holding fix A, cam surface 49 separates with control piece 48, so that the latter is protruding, thereby makes switch move to the ON state.

As illustrated in fig. 1 and 2, the rear wall 32b of lid 32 has a pair of handle support of stretching out backward 51 in its side, between these supporting members, be connected with an operating grip 52, its connected mode should make described operating grip vertical install, by the off position C of part shown in the solid line with by shown in the dotted line, rotate between the operating position D that stretches out of operating grip 52 levels.Operating grip 52 has an arc-shaped cross-section, by the cam portion (bonding part) 53 made of material that as rubber, can increase friction.Handle 52 from off position C to the rotation of operating position D, cam portion 53 makes braking control piece 36 overcome the power that spring 41 produces and moves to application position B from holding fix A.Otherwise in the counter motion of operating grip 52, spring force can make braking control piece 36 shift to holding fix A from application position B.

Fig. 4 has schematically described according to alternating current circuit R, S and T as the given frequency change control apparatus outlet side of converter plant 55, the motor 20 on corresponding spindle 10 and brake/restart the electrical connection form of switch 46 and 47.Converter plant 55 forms with a three-phase alternating-current supply 56 by a main switch 57 and is electrically connected.In alternating current circuit R, S and T, circuit R directly links to each other with CD-ROM drive motor 20 on the spindle 10.Circuit S and the T normally closed splice grafting by

switch

47 and 46 touches and is connected to respectively on the electro-motor 20.In Fig. 4, in brake apparatus 40, braking control piece 35 has only been described schematically, switch chain of command (cam surface) 49, spring 41 and brake scotch 34.Can easily understand from this structure, the present invention has avoided a DC power supply and a DC circuit, though therefore need mechanical brake device in addition on each spindle, can avoid any electrical connection of relevant DC circuit and the change-over circuit between AC electric current and the DC electric current.Therefore, the present invention can avoid the other fault that produces owing to be electrically connected.On the other hand, make expense that mechanical brake device is set unlikely too high and guaranteed the reliability of mechanical brake device operation.Therefore, when the maintenance system has low expense, also obtained reliable operation.

Now, operation describes to first embodiment.Main switch 57 be placed in ON and again and again the firing switch (not shown) be placed in ON, thereby make converter plant 55 begin FREQUENCY CONTROL operation can obtain a kind of predetermined way of controlling spindle 10 rotating speeds.Like this, in all spindles 10, the braking control piece 35 of brake apparatus 40 all is in holding fix A separately, promptly under the condition that braking is removed, when restart/when

brake switch

46 and 47 was placed in ON, all alternating current circuit R, S and T and motor 20 formed and is electrically connected.Therefore, restart the FREQUENCY CONTROL of converter plant 55, thereby finally make the speed of each spindle 10 be risen to a predetermined stable spinning speed.

During spindle 10 rotated, when producing Yarn break on spindle 10, an operator was allocated to operating position D with operating grip 52 from off position C.Between this moving period of operating grip 52, the rear end that the bonding part 53 of handle 52 promotes braking control piece 35 is moved braking control piece 35 from holding fix A to application position B.The braking control piece 35 from holding fix A between the moving period of application position B, switch chain of command 49 is distinguished the control piece 48 of

pull switch

46 and 47, thereby make the latter be converted to corresponding OFF position, with this corresponding motor 20 is disconnected from alternating current circuit S and T, so that make the rotation of motor after under the momentum of himself, carrying out.In addition, move between the moving period of application position B from holding fix A at braking control piece 35, the inclined-plane 36b of braking control piece 35 contacts with watt top of the respective arms 33b of shape fixture 33, makes arm 33b along laterally inwardly moving, so that brake scotch 34 is depressed into the periphery of spindle axis 13 with this.Therefore, when braking control piece 35 is in application position B, on the spindle axis 13 that is subjected under the momentum driving rotary action, produces mechanical braking, thereby make spindle axis 13 fast braking.Because these actual conditions that exist contact portion 53 under rubbing action, can engage, so braking control piece 35 is locked at application position B with braking control piece 35 rear ends.Briefly, according to the present invention, the outage of CD-ROM drive motor 20 should match with brake operating, compares with the outage of independently carrying out CD-ROM drive motor and the situation of brake operating, and operation obtains simplifying.What must emphasize is that application position B is not constant.That is, because the factor as watts 34 wearing and tearing can make position B change a little.

By finishing of spindle axis 13 brakings, take out Yarn break from the bobbin that is fixed on the spindle axis 13 in a known way, pass through from a steel traveler (not shown) and a twizzle (not shown), and grip in the position, front of fine spining machine front draft roller.Subsequently, make the operating grip 52 that is in latched position D be moved downward to off position C, so that under the effect of spring 41, make 35 withdrawals of braking control piece, thereby under watt effect of the spring force of shape fixture 33, brake scotch 34 is separated from the periphery of spindle axis 13, brake off state whereby, switch chain of command 49 and switch 46 separate with 47 control piece 48 afterwards, so that the latter is converted to corresponding ON state, thereby realize that alternating current circuit S and T are electrically connected on motor 20.As a result, begin to carry out the power delivery of electro-motor 20, so that the rotating speed of motor 20 rises to its command speed at once, this speed keeps the speed of unchanged spindle to equate with other.When the rotation of spindle axis began, an operator finished the operation of manual joint in a known way, and at this place, the exit of yarn is received on one fiber of drawing from the front roller (not shown) of fine spining machine.

Fig. 5-10 has described a kind of improvement embodiment of the present invention.Promptly, in improved brake apparatus 40A, braking control piece 235 is by a rectangle mounting portion 236 that is connected on the shell 30 upper surface 30a, and the coupling part 237 that is positioned at the arm 238 of 236 sides, mounting portion and is used to make arm 238 and mounting portion 236 to link into an integrated entity constitutes.Braking control piece 235 comprises an inner surface 235a, and this inner surface is in the face of forming the flange portion 13d of one with spindle axis 13, and to show greatly around half degree of flange portion 13d whole circumference around flange portion 13d.In addition, arm 238 has free end 238a, and described free end should be with respect to the axis of spindle axis 13, radially be oppositely arranged along it, and the outer surface from flange portion 13d outwards is provided with simultaneously.Brake scotch 234 is connected the inner surface of arm 238 ends.Arm 238 has the 237 rear end 238b that stretch out backward from the coupling part, and is formed with groove 239 between rear end 238b and mounting portion 236.Braking control piece 235 by have elasticity, material as synthetic resin forms one.In addition, coupling part 237 is being positioned on braking control piece 235 remainders, has a less part of a thickness on the past backward directions.As a result, when the rear portion of arm 238 238b outwards expanded, arm 238 stood strain, and its mode is that the coupling part 237 that arm 238 makes to fulcrum produces displacement, thereby arm 238 is moved toward each other at its free end.In addition, as described later, the structure of braking control piece 235 should be installed under the state of shell 30 at braking control piece 235, make brake scotch 234 place the holding fix A shown in Fig. 6, in this position, be not subjected to being used to improving when arm 238 238 lateral distance of arm expansion force do the time spent, brake scotch 234 leaves the gap with the periphery of flange portion 13d.

As shown in Figure 6, operating grip 240 has the form of bifurcation that is made of a pair of arm 241, and this is inserted in the groove 239 of lateral spacing arm, and is provided with mounting portion 236 between these grooves.In addition, all have the outwardly directed minor axis 242 of a side direction on each arm 241, this minor axis is inserted in the corresponding support holes 243 of braking on the control piece 235 rotationally.As the result of this structure, operating grip 240 can move between a horizontal level E shown in Figure 5 and an obliquity F shown in Figure 8.Operating grip 240 has a chamfered portion 244 at the root of form of bifurcation, and when operating grip 240 rotated between horizontal level E and obliquity F, this part can prevent to produce between described root and the mounting portion 236 interfered.In addition, be rotated below horizontal level E shown in Figure 5 in order to prevent operating grip 240, the position of operating grip below chamfered portion 244 has a projecting surface 245, and this projecting surface can contact with the rear surface 236a of mounting portion 236.Operating grip 240 is formed with a control projection 246 at its downside with the one form.Described control projection 246 is suitable for lower sheeting spring 250, will be described in more detail later for this point.

In the present embodiment, in order to make circuit R, S and T insert three-phase alternating current with ON or OFF position independently, be similar to first embodiment, between circuit R, S and T and the CD-ROM drive motor 20, as additional brake between switch and circuit R and the CD-ROM drive motor 20 of the braking of

microswitch

46 and 47/restart/restart switch 47A, be set at control projection 246 belows, these brakings/

restart switch

46,47 and 47A are for often opening (OFF) type.When control piece 48 is depressed, with one corresponding in the contact (not shown) place ON, otherwise when control piece 48 is released so that control piece 48 when being in protruding position, the interior contact of respective switch is placed in OFF.

Sheet spring 250 with a hook shaped ends is set at control projection 246 and brakes/restart between

switch

46,47 and the 47A.Sheet spring 250 can play the effect of control piece, makes the touch controls part Synchronization Control of three

switches

46,47 and 47A.As shown in Figure 5, sheet spring 250 has a base portion, this base portion is fixed in the groove 30b of an end face 30a who is formed on shell 30 and with the mounting portion 236 of braking control piece 235, be connected on the shell 30 by the bolt 251 that is screwed into by the top in the screwed hole in the shell, pass through the lateral attitude of groove

30b holding element

235 and 250 simultaneously.Brake/restart among

switch

46,47 and the 47A at three, the displacement that is used to connect the corresponding control piece 48 of respective switch to each other might be slightly different.But the connection of switch should be depressed corresponding control piece 48 by sheet spring 250 elasticity and be finished, and allows to eliminate the difference of described displacement with this, thereby guarantees three forward handover operation orders of braking/restarting switch.

Braking control piece 235 has the rear portion 238b that a pair of lateral spacing distributes, and these rear portions have stepped cam face 260 at its inner surface respect to one another, and these cam surfaces are made of the overhead cam part 261 and the following cam portion 262 that inwardly stretch out.The lateral separation that the overhead cam part is 261 is less than the lateral separation of 262 of following cam portions.The result, rotation at operating grip 240 between horizontal level E and the upright position F can make the motion arm 238 of braking control piece 235 move between the application position B shown in holding fix shown in Figure 6 (not application position) A and Fig. 9, wherein, there is a less gap between the periphery of brake scotch 234 and spindle 13 flange portion 13d at described off position; At described application position B place, form the pressure contact between the periphery of brake scotch 234 and spindle 13 flange portion 13d, so that on spindle axis 13, produce a mechanical braking power.

On the other hand, the lateral spacing of 262 of following cam portions is substantially equal to the transverse width of the operating grip between the 240a of side.Therefore, the operating grip 240 that is in horizontal level E place as shown in Figure 5 is fixed on down between the cam portion 262, so that as shown in Figure 6 and Figure 7, prevents to brake the motion that the rear end part 238 of control piece 235 is outwards opened by operating grip 240.Otherwise, the side 240a location that the horizontal spacing that the overhead cam part is 261 should make obliquity F place at operating grip 240, be positioned at the handle 240 of 261 of overhead cam parts can make the rear end part 238b of braking control piece 235 laterally outwards be promoted, thereby as shown in Figures 9 and 10, brake scotch 234 is depressed into the flange portion 13d of spindle axis 13.

When handle 240 was horizontal E, sheet spring 250 was pushed down by operation projection 246, so that the control piece 48 of each braking/

restart switch

46,47 and 47A all is depressed, thereby made switch place ON.Like this, partly accept to the described classification that the power that makes progress that operating grip 240 is applied is positioned between overhead cam part 261 and the following cam portion 262, the horizontal level E of operating grip 240 is kept with this by sheet spring 250.As a result, keep three-phase circuit R, S and T, thereby keep the rotation of spindle electro-motor 20 power supplies.

When spindle produced Yarn break, operator's mobile phase was answered the operating grip 240 on the spindle, so that this handle moves to the obliquity F place among Fig. 8.This athletic meeting to position F produces sheet spring 250 from the control piece 48 of braking/

restart switch

46,47 and 47A and moves, and makes switch place OFF with this, thereby stops electric current to be delivered to motor 20.In addition, the side 240a of operating grip 240 make the braking control piece 235 overhead cam part 261 laterally outwards open, with this make arm portion 238 from holding fix A to operating position B elastic displacement.At operating position B place, the periphery of flange portion 13d is clamped between the brake scotch 234, thus the braking spindle.Afterwards, the operator finishes bonding operation.

Finish after the bonding operation of Yarn break, operating grip 240 is back to horizontal level E from obliquity F, makes spindle axis 13 begin to rotate with this, thereby begins the spinning operation.

In above-mentioned second embodiment, the structure that is adopted should make brake scotch 234 move inward so that brake scotch 234 is contacted with spindle axis 13 at its diameter relative position.In addition, the brake scotch 234 that is positioned on the relative both sides can contact synchronously with spindle axis 13 peripheries.Therefore, when when this place applies brake force, even spindle axis 13 is in the structure of easy generation vibration, in this case, spindle axis 13 also can be maintained at a vertical extended position.So, it would be desirable, usually when spindle axis 13 is subjected to acting on the brake load of spindle side, it can not cause spindle axis 13 to tilt or the situation of vibration produces, because can cause the gap smaller between rotor 21 and the stator 22 or cause rotor 21 and stator 22 to be in contact with one another under individual cases and damage described parts.But, the shortcoming of structure is among second embodiment, must apply synchronous and equal brake force by the outer surface of 34 pairs of spindle axis 13 of brake scotch, cause and improved the accurate performance requirement of parts, because in the structure of second embodiment, brake force is to be transverse to the spindle axis direction, to be applied in spindle axis 13 peripheries that are in along diametric relative position place, therefore, even between the timing time that the brake scotch 34 of spindle axis 13 opposite sides is adopted, have less difference, also may cause spindle axis 13 to tilt.

Now, the third embodiment of the invention that can overcome above-mentioned difficult point is described.In the 3rd embodiment shown in Figure 11-14, electro-motor 20 be assembled in the fuselage 31 of shell 30 and spindle axis 13 under similar damping effect, be supported in rotationally on the shell 30.One brake apparatus 140 is set, this device comprise a pair of be installed in cover 32 upper surfaces, a spaced supporting member 160 and a shape is L shaped braking control piece 135 substantially, axle bush part 135-1 in the middle of described braking control piece has one, this axle bush part is supported on the supporting member 160 rotationally by pin 135-2, and its support pattern should make braking control piece 135 one shown in solid line in Figure 11 wait for position A and by rotating between the brake operating position B shown in the dotted line.

Braking control piece 135 has a forked section 136 shown in Figure 12 at its tip position place, this forked section 136 is made of a pair of separating arm 136a that is positioned at spindle axis 13 sides.Each arm 136a all has a free end, is provided with a brake portion (brake scotch) 134 at this free-ended lower surface place, and the flange portion 13d upper surface of this brake portion and spindle axis 13 is relative and when carrying out brake operating, is depressed downwards vertically.Braking control piece 135 has operating grip 152 at the other end.

As shown in figure 13, clip 60 is fixedly connected at the outer surface of shell 31 rear wall 31b, and its connected mode should make operating grip 152 be connected with clip 60 with the form that can get loose.That is, as shown in figure 11, the cross section of clip 60 is essentially C shape and a pair of holder 61 is arranged.Clip 60 is made by the elastomeric material as spring steel or synthetic resin.Therefore, when operating grip 152 went to holding fix A, holder 61 engaged with the sidewall of operating grip 152 in the mode that can get loose.

Rear wall 32b position at lid 32 is provided with control piece 145.Described control piece 145 can play the effect of a switch maintenance/decontrol, thereby when removing rotating operations by brake scotch 134, make to brake/restart the position that switch 46 and 47 remains on OFF; And when braking control piece 145 when being back to holding fix A, cancel

switch

46 and 47 OFF holding position.More particularly, as shown in figure 14, control piece 145 is provided with an operating axis 148, and when in order to prevent operating axis 148 from rotating with respect to its axis during setting device, this should slidably insert in direction from front to back, be formed in the hole of covering on 32 the rear wall 32b.Operating axis 148 is should make it be formed with a projection 149 in the end of stretching out from covering the mode that 32 rear wall 32b stretches out backward, and this part contacts with the front surface of operating grip 152.At described projection 149 with cover between 32 the rear wall 32b, be provided with a packing ring 150 and spring 151, move backward so that promote operating axis 148.Operating axis 148 has one and stretches to a front end and a control piece 153 that covers 32 inner spaces, and this control piece is integral and from axle 148 horizontal expansions with axle 148.Control piece 153 is formed with inclined end face as cam chain of command 153b in its lateral ends.

On lid 32, be equipped with two in the lateral outer ends portion of switch chain of command 153b place and brake/restart switch 46 and 47, these switches are normally closed contact condition between alternating current circuit S and T and CD-ROM drive motor 20.In addition, operating grip 152 is by the A place, position of clip 60 clampings in Figure 11, operating grip 152 promotes the projection 149 of operating axis 148, promotes to brake/restart the control piece 48 of switch 46 and 47 so that prevent control piece 153, thereby makes switch keep the state of ON.Otherwise, shown in dotted line B among Figure 11, when operating grip 152 when clip 60 gets loose, spring force can make operating axis 148 move backward, so that control piece 153 inwardly promotes control pieces 48, makes with this and brakes/restart switch 46 and 47 and place OFF.It must be emphasized that, switch 46 and 47 and alternating current circuit R, the connection of S and T and circuit R, S and T are identical with connected mode shown in Figure 4 with being connected of converter plant and AC power.At last, as a kind of modified version, as shown in figure 15, a kind of structure that may adopt is that the rear surface of control piece 153 ends is formed with switch chain of command 153b, and as shown in figure 15, the control piece 48 that makes switch 46 and 47 is in the face of described switch chain of command.

When the operator finds Yarn break, make the operating grip 152 of spindle 10 go to application position B from holder 60 separation and from holding fix A.During described rotation, under the spring force effect of spring 151, operating axis 148 is contracted, so that control piece 153 engages with the control piece 48 of braking/restart switch, so that switch places OFF, thereby make CD-ROM drive motor 20 outage, with this state that motor is in rely on himself momentum to rotate.This rotation of spindle axis 13, the frictional resistance that is produced when being compressed against the upper surface of flange portion 13d by the brake scotch 134 that is positioned at braking control piece 135 ends is braked.After spindle axis 13 brakings, when the operator decontroled operating grip 152,135 of control pieces of braking were in brake scotch 134 and do not form the non-on-position that pressure contacts with flange portion 13d.But the position of braking control piece 135 is not at holding fix A and at the non-braking position place that separates a little with application position B.Afterwards, the broken end of broken end yarn is drawn out of in the mode similar to first embodiment, and the operator is pushed into holding fix A with control piece 135 subsequently, with this operating grip 152 is pushed in the clip 60.This athletic meeting of operating grip 152 travels forward operating axis 148, thereby control piece 153 is separated with 47 control piece 48 from braking/restart switch 46, and make switch place ON, so that CD-ROM drive motor 20 and alternating current circuit R, S and T connection, thereby the rotating speed of spindle axis 13 is increased at once.

In the 3rd embodiment, as indicated above, brake force is applied to the upper surface of the flange portion 13d of spindle axis 13 downwards.Therefore, the direction of brake force mainly is the axis along spindle axis 13.In other words, can make the brake force component that is transverse to spindle axis 13 axis directions of latter's bending very little.Therefore, do not need to improve required precision so that laterally spaced brake portion 34 even synchronous effects in flange portion 13d, simultaneously, prevented from during spindle axis 13 is being braked, to form than macrobending, this bending can make the gap disappearance of 22 of rotor 21 and stators and they are in contact with one another under different situations.

The foregoing description is at driven spindle device between the spindle with shell, and wherein this shell is provided with the mechanical brake device relevant with brake apparatus and braking/restart switch.The advantage of this device is that spindle device being provided with on step rail can make brake apparatus and switch dispose automatically.But the present invention also need not be confined to the application of this a whole set of structure.For example, device within the scope of the present invention can provide mechanical brake device and braking/restart switch, and they are to separate with the independent driven spindle axle.

In above-mentioned description to embodiment, spindle axis 13 be meant one have be used to be absorbed in during the spindle high speed rotating the axle of vibrative shock absorber.But, the present invention can adopt a kind of independent driven spindle, this spindle is the same with traditional alternating current motor, by vertical direction spaced apart and between be provided with the simple rotatably support of supporting arrangement of CD-ROM drive motor, promptly shock absorber needn't be set, as Japanese unexamined patent, publication number be disclosed in the NO.5-247738, in this structure, the brake force on spindle axis one side can not make the gap between rotor and stator change.But this a kind of structure is also included within the scope of the present invention.

Figure 16 and 17 has explained another kind of embodiment, wherein, constitutes a kind of brake apparatus by a mobile model brake apparatus 40D.The braking control piece 35D front portion of described mobile model brake apparatus 40D has a wider portion 74, and this part has the width greater than the operating grip 52D that is formed on control piece 35D rear portion.Arc braking surface (brake portion) 74a that can contact with flange 13d periphery formation pressure is formed on a front end of described anterior 74.Form one from wider portion 74 lower surface opposite sides bossing 75 that stretches out and the double pointed nail of inwardly stretching from respective bump part 75 76 downwards.Equally, the actuation part 77 that is used to brake/restart switch 46D is formed on the lower surface of operating grip 52D front portion with the one form.

Braking/restart switch 46D is a kind of alternation type ON/OFF switch that is installed on the shell 30, so that shift knob 48D stretches out backward.The engaging groove 78 that is used to guide double pointed nail 76 is set at the opposite flank of the shell 30 that more approaches shift knob 48D.One front portion of engaging groove 78 is bent upwards to form hook-type.Be used to brake the brake apparatus 80 of the spindle axis 13 that combines with mobile model brake apparatus 40D, on a upper surface of the front portion of the lid 32 of shell 30, form one with it.Brake apparatus 80 surfaces relative with flange 13d periphery have the arc brake area 80a with the complementation of flange 13d periphery.Between braking surface 80a and flange 13d periphery, has a little clearance t 0.Described little clearance t 0 should be selected the clearance t less than 21 of stator 22 and rotors, even so that act on spindle axis 13 from a side with shift knob 48D at braking control piece 35D, and the braking surface 74a of braking control piece 35D is pressed on the periphery of flange 13d so that spindle axis 13 tilts a little and when diametric(al) is bitten flange 13d periphery between the braking surface 80a of braking surface 74a and brake apparatus 80, can prevent that 21 of stator 22 and rotors are in contact with one another.

When finding Yarn break, the operator makes mobile model brake apparatus 40D act on spindle axis 13 with propulsion mode, and this makes fastener 76a engage with engaging groove 78.During promoting, actuation part 77 pull switch button 48D make with this and brake/restart switch 46D and place OFF, and keep this state to stop power supply to CD-ROM drive motor 20 power supplies, rotate thereby make spindle axis 13 carry out inertia.

After this, brake apparatus 40D is further promoted forward so that double pointed nail 76 enters in the hook portion 78a of engaging groove 78.When promoting operating grip 52D and keeping this state, owing to the leverage of fulcrum at double pointed nail 76 and hook portion 78a contact point place, braking surface 74a pushes down the periphery of flange 13d.Therefore, spindle axis 13 and braking surface 80a form pressure and contacts, slight inclination simultaneously, thus make spindle axis 13 be clamped between braking surface 74a and the 80a and make brake force act on its both sides so that spindle axis 13 is braked along diametric(al).Similar to the mode of the 3rd embodiment, when keeping this state, anterior position place and releasing braking device 35D that the Yarn break that the operator will have been broken is pulled to front roller are converted to ON so that brake/restart switch 46D from OFF.Therefore, provide power supply to rotate spindle axis 13 to CD-ROM drive motor 20.Subsequently, finish the yarn bonding operation.

Below, Figure 18 and 19 has described another embodiment of mobile model brake apparatus 40E.Described mobile model brake apparatus 40E has a pair of braking control piece 90, and these brake components can play one can be with respect to the pliers effect of pin 91 rotations.The rear portion of braking control piece 90 forms operating grip 92, and its anterior retained part 93 that forms.One free end of retained part 93 curves inwardly to form brake portion 94.Between operating grip 92, be provided with spring 96 so that operating grip 92 departs from usually each other.Pin 91 is stretched out downwards so that form bonding part 91a on a part of stretching out by braking control piece 90, and this part can engage with the engaging groove 95 on the lid 32 that is arranged on shell 30.The external switch button 48E that brakes/restart switch (alter switch) 46E with the position of more approaching shell 30 1 sides, be set at shell 30 a rear wall 31b of main body on.

When finding Yarn break, operator's pull switch button 48E is so that brake/restart switch 46E and be converted to OFF and keep this state from ON.Thus, interrupt the power supply of power supply, and spindle axis 13 is rotated by inertia CD-ROM drive motor 20.After this, the operator applies power by spring 96 effects retained part 93 is opened to engaging groove 95 to the bonding part 91a of mobile model brake apparatus 40E.Subsequently, operator's clamp operation handle 90 so that brake portion 94 from both sides, clamp spindle axis 13 synchronously along diametric(al), thereby spindle axis 13 is applied a brake force and brakes under the situation that does not produce inclination.After this, the Yarn break that the operator will have been broken is pulled to the anterior position place of front roller, make spindle axis 13 keep motionless simultaneously, releasing braking device 40E, make to brake/restart switch 46E to be converted to ON with to CD-ROM drive motor 20 power supply, thereby make spindle axis 13 reset and finish the yarn bonding operation from OFF.

The present invention also can use to have the braking of often opening contact/restarts switch.For example, adoptable device should be when actuator shaft be pushed into, by a control piece so that described contact disconnect, otherwise too.When can be to the power supply of CD-ROM drive motor power supply controlled, also said apparatus can be adopted so that control by the ON/OFF operation of whole three-phases by the ON/OFF operation of the two-phase in the three-phase AC power supplies in the foregoing description.

As indicated above, since spindle according to the present invention by mechanical braking, so can save a DC power supply at least, the electrical connection of using between DC power circuit and AC and DC power supply, for DC power supply and an on-off circuit, more than these elements be to have adopted the one type of prior art syringe of DC brakes necessary.Therefore, the cost of braking of the present invention/restart switch is comparatively cheap, even and need a mechanical braking mechanism also can have very high reliability and less electric fault.Be applied to offset on the spindle axis because brake force is applied in the both sides of spindle axis pivot center and reduce to minimumly, therefore can brake spindle axis in the essential interval of institute between CD-ROM drive motor rotor and stator keeping.Particularly, brake force with the directive effect that is transverse to spindle axis usually in the braking model on the spindle axis can abated effect on spindle supporting power and avoid generation of vibration.Since brake apparatus and braking/restart switch to interrelate, thereby increased operability.Because spindle and brake apparatus and braking/and to restart switch as a whole, so compare under the situation of the installation of this fine spining machine and " brake apparatus with braking/restart switch independently to be installed in fine spining machine ", its installation just becomes very easy.

Equally, portable brake apparatus generally is suitable for a plurality of single spindles that drive, and therefore only is set at corresponding single situation about driving on the spindle with brake apparatus and compares, and can reduce the quantity of parts and the trouble that assembly manipulation caused greatly.

Claims

1. be used to brake/restart a single device that drives spindle in the fine spining machine, has the independently electro-motor that is used for corresponding spindle on the wherein said spindle, each CD-ROM drive motor is powered by alternating current circuit, it is characterized in that described spindle comprises a brake apparatus, this brake apparatus is used for when Yarn break occurring spindle being carried out the mechanical braking operation, reach one and brake/restart switch, this switch only the Yarn break place occurs at spindle, and described spindle CD-ROM drive motor and being connected of described alternating current circuit is converted to ON or OFF.

2. according to claim 1ly be used to brake/restart a single device that drives spindle, it is characterized in that, described brake apparatus has the brake portion that can be frictionally engaged with the spindle axis both sides.

3. according to claim 2ly be used to brake/restart a single device that drives spindle, it is characterized in that: brake force with the directive effect that roughly is transverse to the spindle rotation axis on spindle axis.

4. according to arbitrary described device that is used to brake/restart a single driving spindle among the claim 1-3, it is characterized in that: brake apparatus and braking/restart switch to adopt such contact to each other, by driving brake apparatus, brake/restart switch the AC power supplies circuit is disconnected and spindle axis is braked from CD-ROM drive motor.

5. the device that is used to brake/restart a single driving spindle according to claim 4, it is characterized in that: brake apparatus and braking/restart switch to adopt such contact to each other, by the braking action of brake off device, brake/restart switch the AC power supplies circuit is connected with CD-ROM drive motor.

6. the device that is used to brake/restart a single driving spindle according to claim 4, it is characterized in that: brake apparatus and braking/restart switch to adopt such contact to each other, even the braking action of brake apparatus is disengaged, braking/restart switch keeps the AC power supplies circuit to be connected with CD-ROM drive motor, after this, wait for the position by making brake apparatus return one, the AC power supplies circuit is disconnected from CD-ROM drive motor.

7. the device that is used to brake/restart a single driving spindle according to claim 4, it is characterized in that: described brake apparatus comprises that one can wait for the braking control piece that moves between position and application position one, described brake portion forms pressure along moving of braking direction with spindle axis by the braking control piece and contacts, and one activate part, and this part is used to control braking between between AC power supplies circuit and CD-ROM drive motor/restart switch.

8. a list that is used for fine spining machine drives spindle, it is characterized in that: a brake apparatus that is used for the mechanical braking spindle axis is set, and one only is used to disconnect/connect the braking that is connected between CD-ROM drive motor and AC power supplies circuit/restart switch on the housing of the CD-ROM drive motor of the spindle axis that is used to drive spindle.

9. single spindle that drives according to claim 8, it is characterized in that: brake apparatus and braking/restart switch to adopt such contact, by driving brake apparatus, braking/restart switch disconnects AC power supplies circuit and CD-ROM drive motor, and spindle is braked, by the braking action of brake off device, brake/restart switch AC power supplies circuit and CD-ROM drive motor are connected.

10. single spindle that drives according to claim 8, it is characterized in that: brake apparatus and braking/restart switch to adopt such contact, by driving brake apparatus, braking/restart switch is braked AC power supplies circuit and CD-ROM drive motor disconnection and spindle, even the braking action of brake off device also can be by braking/restart the disconnection that switch keeps the AC power supplies circuit, after this, wait for the position by making brake apparatus return one, brake/restart switch AC power supplies circuit and CD-ROM drive motor are connected and make.

11. single spindle that drives according to claim 10, it is characterized in that: described brake apparatus comprises that is movably braked a control piece between application position and holding fix, one brake portion, this part by the braking control piece on braking direction motion and form pressure with spindle axis and contact, and one activate part, be used to operate braking between between AC power supplies circuit and CD-ROM drive motor/restart switch, even wherein be disengaged owing to brake portion makes braking action, actuation part also can make brakes/restarts that switch remains on the OFF state so that AC power supplies circuit and CD-ROM drive motor disconnect, and brake off/the restart maintenance action of switch by making the braking control piece return holding fix.

12. single spindle that drives according to claim 11, it is characterized in that: the braking control piece with the bifurcated front end that can clamp spindle axis is installed on the shell rotating up and down, and the brake portion that is arranged on braking control piece front end contacts with the formation of spindle axis flange with along the axis direction of spindle axis, a downward pressure is applied on its upper face.

13. the device that is used to brake/restart a single driving spindle according to claim 1, it is characterized in that: described brake apparatus is portable brake apparatus.

14. the device that is used to brake/restart a single driving spindle according to claim 13, it is characterized in that: portable brake apparatus has with separable mode, the fastener that engages with single driving spindle and brakes control piece, this braking control piece has and can form the brake portion that pressure contacts with spindle axis, wherein when fastener engaged with single bonding part that drives spindle, brake portion formed pressure with spindle axis and contacts.

15. the device that is used to brake/restart a single driving spindle according to claim 14, it is characterized in that: described portable brake apparatus has one and activates part, at fastener and single when driving spindle and engaging, this actuation part can activate one brakes/restarts switch between between AC power supplies circuit and CD-ROM drive motor.