US3885285A

US3885285A - Installation for assembly of movable system of dynamic loudspeakers

Info

Publication number: US3885285A
Application number: US401555A
Authority: US
Inventors: German Borisovich Panteleev
Original assignee: Individual
Current assignee: Individual
Priority date: 1973-09-27
Filing date: 1973-09-27
Publication date: 1975-05-27
Anticipated expiration: 1992-05-27
Also published as: FR2250252A1; FR2250252B1; NL7314781A; NL150301B; GB1436198A

Abstract

An installation for assembly of the movable system of dynamic loudspeakers, comprising a base mounting diffusers of loudspeakers; a drive for displacing the base; a device for securing diffusers of loudspeakers to the base; a device for winding wire onto the reel of the sound coil of a loudspeaker; a device for drying the sound coil of a loudspeaker, and a distribution shaft used to ensure a sequency of operations performed by the above-mentioned devices. The installation according to the invention is characterized in that it comprises a device for fixing the diffuser of a loudspeaker to the reel of a sound coil, a device for gluing the reel and winding of a sound coil, technological mandrels of which each is a gauge for the reel and accompanies the diffuser of a loudspeaker from the moment it is fed into the neck thereof and to the moment of final assembly of the movable system of a loudspeaker, and a mechanism for transporting technological mandrels. The installation is mainly designed to be used at radioengineering plants.

Description

United States Patent 1191 Panteleev 1 1 INSTALLATION FOR ASSEMBLY OF MOVABLE SYSTEM OF DYNAMIC LOUDSPEAKERS German Borisovich Panteleev, prospekt Metallistov, 82, kv. 158, Leningrad, USSR.

22 Filed: Sept. 27, 1973 211 App]. No.: 401,555

[76] Inventor:

Primary ExaminerThomas H. Eager 1 51 May 27, 1975 [57} ABSTRACT An installation for assembly of the movable system of dynamic loudspeakers, comprising a base mounting diffusers of loudspeakers; a drive for displacing the base; a device for securing diffusers of loudspeakers to the base; a device for winding wire onto the reel of the sound coil of a loudspeaker; a device for drying the sound coil of a loudspeaker, and a distribution shaft used to ensure a sequency of operations performed by the abovementioned devices The installation according to the invention is characterized in that it comprises a device for fixing the diffuser of a loudspeaker to the reel of a sound coil, a device for gluing the reel and winding of a sound coil, technological mandrels of which each is a gauge for the reel and accompanies the diffuser of a loudspeaker from the moment it is fed into the neck thereof and to the moment of final as sembly of the movable system of a loudspeaker, and a mechanism for transporting technological mandrels.

The installation is mainly designed to be used at radio-engineering plants.

7 Claims, 18 Drawing Figures F'ATENTED AYZYIHYS 3.885.285

SHEET 02 0F 9 INSTALLATION FOR ASSEMBLY OF MOVABLE SYSTEM OF DYNAMIC LOUDSPEAKERS BACKGROUND OF THE INVENTION l. Field of the Invention The present invention relates to means of mechaniza tion and automatization of manufacture of radio equipment and, more particularly, to installations for assembly of the movable system of dynamic loudspeakers, to be used at enterprises manufacturing radio equipment, such as dynamic sound systems.

2. Description of the Prior Art At present, the movable system of dynamic loudspeakers is assembled at enterprises of radioengineering industry manually with the aid of devices of which each is adopted for performing one operation, for example, a device for fixing diffusers, or coneforming diaphragms, of loudspeakers, a device for winding wire onto the reel of the loudspeaker sound coil, a device for drying the sound coil of the loudspeaker, etc.

Widely known in the art are also installations used for manufacturing electric bulbs, making medical tablets and their packaging, and comprising a base, a drive for moving the base, various devices and a distribution shaft used for carrying out the operations of the above said devices in a certain sequence. It was difficult to provide an installation of the same type for assembly of the movable system of dynamic loudspeakers due to insufficient rigidity of the members of the movable system in the course of fulfilment of separate technological operations during its assemblyv These difficulties could not be overcome by way of employing conventional one-operation devices whose disadvantages lie, as it has already been said above, in a large proportion of manual labour, as well as because of absence of a number of devices used for performing certain operations providing for a high quality of the movable system of dynamic loudspeakers.

SUMMARY OF THE INVENTION The present invention has as its object provision of an installation for assembly of the movable system of dynamic loudspeakers, that would make it possible to automate the process of assembly of the movable system of dynamic loudspeakers, and would provide sufficient rigidity of its members in the course of assembly, thereby raising the efficiency, minimizing rejects and excluding a number of technological operations, such as, for example, gauging of the sound coil after it is secured to the diffuser.

This object is accomplished by the installation for assembly of the movable system of dynamic loudspeakers, which comprises a base mounting diffusers of loudspeakers, a drive for moving the base, a device for securing the diffusers of loudspeakers to the base, a device for winding wire onto the reel of the sound coil of a loudspeaker, a device for drying the sound coil of a loudspeaker and a distribution shaft used for carrying out the operations of the above-mentioned devices in a certain sequence, this installation has. according to the present invention, a device for fixing the diffuser of a loudspeaker to the reel of a sound coil, a device for gluing the reel and winding of the sound coil, technological mandrels of which each serves as a gauge for the reel and accompanies the diffuser of a loudspeaker from the moment the reel of a sound coil starts being fed into its neck and up to the moment of completion of assembly of the movable system of a loudspeaker, and a mechanism for transporting technological mandrels.

It is expedient to make the device for fixing the diffuser ofa loudspeaker to the reel of a sound coil in such a manner that it would comprise a mechanism for manufacturing the reel of a sound coil the mechanism may be made a cylindrical rod operatively connected to a drive and having a sound coil reel formed thereon from a paper glued band with the aid of a rolling roller, the reel thus formed being then fed by the cylindrical rod into the neck of the loudspeaker diffuser. A batcher of glue solvent is operatively connected to the distribution shaft and made as a tank with a valve that is opened when the batcher is brought to the neck of the loudspeaker diffuser to put onto the latter the solvent in an ammount necessary for gluing the diffuser to the sound coil reel.

It is also expedient to make the device for gluing the reel and winding of the sound coil in such a manner that it comprises a chamber with glue, a driven mechanism controlled by the distribution shaft and a lubricating roller mounted so that it floats along an axis and is spring-pressed against a port made in the chamber with glue. The lubricating roller is made hollow and provided with slots along the inner diameter, and the axle of the roller is provided with respective projections.

It is no less expedient to make the mechanism for transporting technological mandrels as a cylindrical pipe bent along a circumference arch and brought with its end portions to holes made in the base and disposed coaxially relative to the necks of the loudspeaker diffusers disposed in the position of feeding technological mandrels into the reel of a sound coil and the position in which the technological mandrels are pushed out of the said reelv Pushers are provided for displacing the technological mandrels in the pipe, the central part of the pipe being embraced by the tank with glue solvent and being provided with a helically disposed slot accommodating a brush for removing glue from the technological mandrels.

The installation for assembly of the movable system of dynamic loudspeakers, according to the present invention, provides automation of the process of assembly of the movable system, raises the efficiency, minimizes rejects, and ensures high quality of the movable system of dynamic loudspeakers. An assembled movable system comes off the installation according to the present invention every 10 seconds.

BRIEF DESCRIPTION OF THE DRAWINGS The following detailed description of exemplary embodiments of the present invention is given with reference to the accompanying drawings, in which:

FIG. 1 schematically shows a general view of an installation for assembly of the movable system of dynamic loudspeakers, according to the invention;

FIG. 2 is a top view similar to FIG. I;

FIG. 3 is a longitudinal section of the installation of FIG. 1;

FIG. 4 schematically shows a device for securing diffusers of loudspeakers to the base;

FIG. 5 schematically shows a mechanism for transporting technological mandrels;

FIGv 6 is a sectional view taken generally along line VI-Vl of FIG. 5;

FIG. 7 schematically shows, in longitudinal S-section, a device for fixing diffusers of loudspeakers to the reels of sound coils;

FIG. 8 is a sectional view taken generally along line VIII-VIII of FIG. 7;

FIG. 9 is a sectional view taken generally along line lX-IX of FIG. 7;

FIG. 10 is a sectional view taken generally along line XX of FIG. 7;

FIG. 11 is a device for gluing the winding of a sound coil, in longitudinal section;

FIG. I2 is a sectional view taken generally along line XIIXII of FIG. 11, and showing the device in non operative position;

FIG. 13 is a sectional view similar to FIG. 12, but showing the device in operating position;

FIG. 14 schematically shows a device for winding wire onto the reel of the sound coil of a loudspeaker;

FIG. I is a simplified view of a device for cleaning outlet jumpers of wire;

FIG. 16 shows a simplified view of a device for fluxing outlet jumpers of wire;

FIG. 17 schematically shows a device for drying the sound coil of a loudspeaker;

FIG. 18 schematically shows a device for cutting outlet jumpers of wire.

DESCRIPTION OF THE PREFERRED EMBODIMENT An installation for assembly of the movable system of dynamic loudspeakers comprises a base 1 (FIG. I) that is capable of rotating, and a stationary base 2. The stationary base 2 mounts devices 3 for securing diffusers, or cone-forming diaphragms, 4 to the base I, a device 5 for fixing diffusers of loudspeakers to the reel of a sound coil, a device 6 for gluing the reel and winding of a sound coil, a device 7 for winding wire onto the reel of a sound coil, a device 8 for cleaning outletjumpers of wire, a device 9 for drying the sound coil of a loudspeaker, a device 10 for fluxing outlet jumpers of wire and a device I] for cutting outlet jumpers of wire. All the devices are disposed along a circumference in a technological sequence of operations of assembly of the movable system of dynamic loudspeakers. Disposed under the base 1 is a mechanism 12 for transporting technological mandrels 13 of which each serves as a gauge for the reel of a sound coil and accompanies the diffuser 4 since the moment the sound coil reel is started to be fed into its neck and up to the moment of complete assembly of the movable system of dynamic loudspeakers. Whereupon the technological mandrel 13 is pushed out of the reel of a sound coil by a pusher 14 that is also disposed on the base 2. The sequence of operations of the afore-said devices is effected with the aid of a control board 15 by means of a distribution shaft 16 mounted on the axle of the base 1. The distribution shaft 16 is operatively connected to a driven mechanism (not shown in the drawings) disposed under the base 1, electrical equipment being accommodated in a case 17. The mechanisms disposed under the base I are covered by a casing 18.

FIG. 2 shows a top view of the base 1, which has, diffusers 4 disposed thereon in the technological sequence of assembly of the movable system of dynamic loudspeakers (positions A-P), and the base 2. At position A the diffusers 4 are mounted on the base 1, whereas ready articles are removed at position P. As it has already been said afore, the sequence of operations of the devices (the drawings show a part of the devices), adapted to fulfill the operations of the technological process of assembly of the movable system of dynamic loudspeakers, is effected with the aid of the distribution shaft 16.

The mechanism 12 for transporting the technological mandrels 13 is disposed between position C, at which the mandrel 13 is fed into the reel of a sound coil, and position N at which the mandrel 13 is pushed out of the reel. The arrow shows the direction of the base I rotation.

FIG. 3 shows a longitudinal section of the installation for assembly of the movable system of dynamic loudspeakers. In addition to the above-described devices constituting the installation, it also shows a driven mechanism 19 disposed under the base I.

The driven mechanism 19 comprises an electric motor 20 whose shaft is rigidly coupled with the shaft of a reducing gear 21. From the electric motor 20 via the reducing gear 21 and a tapered gear drive 22 rotation is transmitted to a shaft 23. The shaft 23 imparts rotation through a system 24 of cylindrical gear drives to the distribution shaft 16 the other end portion of shaft 16 has a unit 25 of cams rigidly secured thereon. Each of the cams of the unit 25 controls a certain device that is a part of the installation. This same system 24 of cylindrical gear drives and a tapered gear drive 26 are used to impart rotation from the shaft 23 to the device 5 for fixing diffusers of loudspeakers to the reel of a sound coil. Rigidly secured on the other end portion of the shaft 23 is a semi-coupling 27. The other semi-coupling 28 is seated loosely on the shaft 23 and is prevented from engaging the semi-coupling 27 with the aid of a lever 29 having a roller 30 disposed at the end thereof and entering a slot 31 of the semi-coupling 28. The other end of the lever 29 is secured to a pivot 32 and is suspended by a spring 33. The semi-coupling 28 has a pin 34 with the aid of which is engages a Geneva wheel 35; the Geneva wheel 35 has 12 slots 36 uniformly spaced along a circumference and enterd by the pin 34. The Geneva wheel 35 is rigidly coupled with the base 1 and is fixed with the aid of a stop 37 con trolled by an electric magnet 38. The electric magnet 38, in its turn, is controlled by a microswitch 39 that is switched on and off by a cam 40 seated rigidly on the distribution shaft 16. The semi-coupling 28 is controlled, i.e. engaged and disengaged with the semicoupling 27, by an electric magnet 41.

The base 1 has 12 mandrels 42 (of which only two are shown in the drawing) uniformly spaced along the circumference thereof and carrying the diffusers 4 (not shown in the drawings). The surface of the mandrels 42 is similar in its shape to that of the diffusers 4.

The device 3 (FIG. 4) for securing diffusers of loudspeakers is made as a lever 43 rolling in a pivot 44 that is mounted on the base I. The end portion of the lever 43, that has two resilient fingers 45 (only one shown in the drawing) secured in parallel thereon, is pressed by a spring 46 to the base 1 and, thus, the resilient fingers 45 press the diffuser 4 (not shown in FIG. 4) against the mandrel 42. The other end portion of the lever 43 has a roller 47 secured thereon and interacting with a cam 48 rigidly secured to the stationary base 2.

The mechanism 12 (FIG. 5) for transporting the technological mandrels 13 is made as a cylindrical pipe 49 bent along a circumferential arch. The pipe 49 is mounted at its ends coaxially relative to the holes of the mandrels 42 disposed, as it has already been mentioned before, at position C (FIG. 2) and at position N. The pipe 49 lodges the technological mandrels 13 tightly adjusting against one another. The technological mandrels 13 can displace along the axis of the pipe 49 under the action of the pusher I4. The latter is made as a lever 50 rolling in a pivot 51. The pivot 51 is rigidly secured to the stationary base 2. One end of the lever 50 is essentially a fork 52 pivotally connected to a rod 53. The rod 53 can move in a guide 54, thereby pushing the technological mandrels 13 along the axis of the pipe 49. The direction of movement of the mandrels 13 is shown by an arrow. The other end of the lever 50, carries a roller 55 pressed against the surface of a cam 56 by a spring 57. The cam 56 has a projection 58 and is rigidly secured to the distribution shaft 16.

The central portion of the pipe 49 is hermetically embraced by a tank 59 filled with glue solvent. To replace dirty solvent, the tank 59 has a charging port 60 and a discharge port 61. The ports 60 and 61 are covered with caps 62 and 63, respectively. The portion of pipe 49 embraced by the tank 59 is provided with a spiral groove 64 (FIG. 6) accommodating hair brushes 65. The brushes 65 are adapted to remove glue from the technological mandrels 13 (FIG. 5).

The device 5 (FIG. 7) for fixing the diffuser 4 of a loudspeaker to the reel of a sound coil comprises a mechanism 66 for manufacturing the reel of a sound coil and a batcher 67 of glue solvent.

The mechanism 66 for manufacturing the reel of a sound coil comprises a bobbin 68 having a paper band 69 wound thereon. before it is wound onto the bobbin 68 the band is preliminarily covered with glue which is then permittmed to dry. The bobbin 68 is secured to a shaft 70 rotating in a guide 71 and being slowed down with the aid ofa spring 72. The mechanism 66 for manufacturing the reel of a sound coil is imparted movement from the driven mechanism 19 shown in FIG. 3 via a shaft 73 having a bevel gear 74 of the bevel gear drive 2 also shown in FIG. 3, rigidly secured thereon. Ridigly secured on the shaft 73 are also a toothed sector 75,

cams

76 and 77, and a cylindrical gear 78. The shaft 73 rotates in guides 79. The gear 78 engages a gear 80 rigidly secured on a shaft 81 and rotating in a guide 82. Rigidly secured on the shaft 8] is also a cam 83 contacting a rolling roller 84. The roller 84 is rigidly secured to a shaft 85 rotating in a guide 86. With the aid of the roller 84 the paper band is wound around a cylindrical rod 87. With the aid of the cam 77 via a roller 88 of rod 87 can move vertically upwards in a guide 89 and retract under the action of a spring 90. The band 69 is fed to the rod 87 by rotating rollers 91 and 92 (FIG. 8). The roller 91 (FIGS. 7 and 8) is connected to a shaft 93 having a cylindrical gear 94 and a bevel gear 95 rigidly secured thereon. The roller 92 (FIG. 8) is connected to a shaft 96 having a cylindrical gear 97 rigidly secured thereon. The gears 94 and 97 (FIG. 8) engage each other, while the bevel gear 95 (FIGS. 7 and 8) engages the toothed sector 75. The cam 76 (FIGS. 7 and 9) contacts a lever 98 rolling in a pivot 99 (FIG. 9). One of the ends of the lever 98 has a cutting blade 100 secured thereon for cutting a piece of the band 69 (FIG. 7) to a length required for forming a reel of a sound coil. The other end of the lever 98 (FIG. 9) has a roller 101 secured thereon and, with the cam 75 rotating and rolling over the side face of the latter. The roller 101 is pressed against the side face ofthe cam by a spring 102. The direction of movement of the cutting blade is shown in FIG. 9 by an arrow.

The rollers 91 and 92 (FIG. 10) are mounted on

axles

103 and 104, respectively, in

elastic bushings

105 and 106 to provide a required force of contact with the paper band 69. Before it is fed onto the rod 87, the band 69 is preliminarily treated. This is effected with the aid of a scraper 107 that scrapes the band 69 over its whole width, and a block 108 having an elastic absorber 109 secured thereon. The force with which the scraper 107 is pressed against the absorber 109 controlled by a screw 110 provided with a flywheel 111. With the band 69 thus preliminarily treated, it is easier to form a sound coil reel on the cylindrical rod 87 with the aid of the rolling roller 84. The band moves between the

rollers

91 and 92 and the rod 87 in guides 112,113,114 and 115.

The batcher 67 (FIG. 7) of the glue solvent is controlled with the aid of a cam 116 rigidly secured on the distribution shaft 16. The batcher 67 is essentially a tank 117 provided with glue solvent, and a tank 118. The

tanks

117, 118 are intercommunicated by a pipe 119. The tank 117 is designed to fill the tank 118 with glue solvent to ensure uniform consumption of the glue owing to maintenance of a constant level of the glue solvent in the tank 118 with the aid of the pipe 119. Glue solvent is poured into the tank 117 through a hole (not shown in the drawing) closed with a cap 120. The tank 118 has an axial port 121. Inserted into the tank 118 is a bushing 122 with a port 123 disposed coaxially relative to an axial port 121 of the tank 118. A ring I24 embraces the bushing 122. Provided between the bushing 122 and the ring 124 is a capillary gap 125. The tank 117 is provided with a valve which is essentially a needle 126 having a ball 128 pressed thereto by a spring 127. The ball 126 overlaps the port 121 provided in the tank 118. The needle 126 is pressed against the ball 128 by a lever 129 whose end portion is pressed against the needle 126 by a spring 130, the lever 129 being secured to a pivot 131.

The batcher 67 is secured to an end portion of a carriage 132 whose other end portion has a rotating roller 133 secured thereon and pressed against the cam 116 by a spring 134. The base 1 has a lever 135 with a stop 136, rigidly secured thereon and interacting with the other end of the lever 129. With the cam 116 rotating, the batcher 67 is brought to the neck of the diffuser 4, to be found on the mandrel 42, and held thereon by means of the device 3 for securing diffusers.

The device 6 (FIG. 11) for gluing the reel and Winding of a sound coil comprises a cylindrical tank 137 with glue disposed inside a cylindrical sleeve 138 provided with a tapered toothed rim 139. The sleeve 138 is loosely disposed inside a cylindrical body 139' secured to the stationary base 2. The cavity of the tank 137 is communicated with the cavity of the sleeve 138 by a pipe 140 having a chamfered butt end and passed through a hole 141 in the tank 137. Disposed inside the tank 137 is a valve consisting of a needle 142 whose end presses out a ball 143 loaded by a spring 144, as a result of which the glue from the tank 137 passes over into the sleeve 138. The level of the glue in the tank 138 is maintained automatically with the aid of the pipe 140. The tank 137 is hermetically sealed with a cover 145 having the needle 142 inserted thereinto. In order to pour glue into the tank 137, the needle 142 is to be taken out of the cover 145, whereby the needle 143 is pressed by the spring 144 to overlap the port 141 provided in the bottom of the tank 137. Glue from sleeve 38 is delivered along a pipe 146 into a chamber 147 accommodating a lubricating roller 149 floating on the axle 148 for gluing a reel 150 of a sound coil, or the winding (not shown in the drawings.) of the reel 150. Rigidly secured to the axle 148 is a cylindrical gear 151 engaged with a cylindrical gear 152. The gear 152 is rigidly secured to an axle 153 having the sleeve 138 loosely seated thereon. The driving mechanism of the device 6 for gluing is operatively connected to the sleeve 138 and comprises an electric motor 154 whose shaft 155 has a bevel gear 156 rigidly secured thereon. The gear 156 engages the toothed rim 139 of the sleeve 138. The electric motor 154 is secured in an upright 157 secured to the stationary base 2, the axle 153 also being secured to the upright 157 with the aid of a strip 158.

With the aid of a screw 159, the axle 148 can move together with a carriage 160 within the limits of the height of a tooth of the

gears

151 and 152. thereby adjusting the contact between the lubricating roller 149 and the reel 150.

The lubricating roller 149 is made of fluorine plastic, which makes its operation more reliable as aggressive components of the glue affect only slightly fluorine plastic. The roiler 149 (FIG. 12) is made hollow and has slots 161 disposed along its inner diameter, whereas the axle 148 is provided with projections 162. When in non-operating position, the roller 149 does not contact the reel 150 and is pressed againsts a port 164 of the chamber 147 by a spring 164 through a block 165.

In its operating position the reel 150 (FIG. 13) contacts the roller 149 and presses it away from the port 163 of the chamber 147, as a result of which a slit is formed between the surfaces of the roller 149 and the port 163. The surface of reel 150 is glued through the slit when the roller 149 is rolling over the reel 150. The amount of the glue placed onto the reel 150 depends on the width of the slit 5 obtained as a result of pressure of the roller 149 against the reel 150; on the distance a between the reel 150 axis and the axle 148.

The device 7 (FIG. 14) for winding wire onto the reel of a sound coil has its own drive which comprises an electric motor 166 whose axle 167 has a semi-coupling 168 rigidly secured thereon. The other semicoupling 169 is rigidly secured to a shaft 170 that also has a cylindrical gear 171 and a worm 172 rigidly secured thereto. The worm 172 engages a worm wheel 173 which is rigidly secured to an axle (not shown in the drawing]. The worm wheel 173 is rigidly connected to a cam 174 and a disk 175 having a cut 176. The shaft 170 is pivotly connected with the aid of a fork 177 secured to the end thereof to a lever 178. This same end of the lever 178 has a stop 179 rigidly secured thereto and having its end provided with a rotating roller 180 secured thereto and interacting with the disk 175. The roller 180 is pressed against the surface of the disk 175 by a spring 181, with the [ever 178 swinging in a pivot 182. The other end of the lever 178 has a rotating roller 183 secured thereto and interacting with a cam 184 rigidly secured to the distribution shaft 16; the cam 184 being provided with a stop 185.

The gear 171 is engaged with a cylindrical gear 186 rigidly secured to a hollow spindle 187 rigidly connected to a reeling frame 188. The reeling frame 188 is provided with rotating rollers 189 which are secured thereon and along which the wire 190 to be wound is fed to the reel of a sound coil. The reeling frame is springloaded relative to the stationary base 2 by a spring 191. A pivot 192 mounts a link 193 whose ends have

stops

194 and 195 secured thereon.

The stop 194 interacts with the reeling frame 188, while the stop 195 interacts with a pusher 196 which. in its turn, interacts with the cam 174. The winding of the wire onto the reel 150 is controlled by way of displacement of the pivot 192 (the direction of the displacement being shown in the drawings by arrows).

The device 8 (FIG. 15) for cleaning outlet jumpers of the wire 190 comprises an electric motor 197 secured to one of the ends of a carriage 198. An axle 199 of the electric motor 197 is disposed vertically and has an elastic abrasive wheel 200 secured to the end thereof. The other elastic abrasive wheel 200 is mounted on an axle 201 rotating in bearings 202 of a guide 203. The guide 203 is rigidly connected to the carriage 198 which is also rigidly connected to a guide 204 which is capable of vertical displacement in a guide 205. The guide 205 is secured to a body 206 connected to the carriage 198 with the aid of a spring 207. The body 206 can reciprocate in the horizontal plane relative to a guide 208 (in the drawing this displacement is shown perpendicular to the plane of the drawing) se cured to the stationary base 2. In order to limit the dis placement of the body 206, a earn 209 has a step 210. The earn 209 is rigidly secured to the distribution shaft 16 and has a projection 211. Secured to the other end of the carriage 198 is a rotating roller interacting with the cam 209.

The device 10 (FIG. 16) for fluxing outlet jumpers of the wire 190 is made as a body 213 one end of which carries a bath 214 with flux and the other end a rotating roller 215 pressed by a spring 216 against the side face of a cam 217 rigidly mounted on the distribution shaft 16. The body 213 is capable of moving in a guide 218 (the direction of the movement being shown by arrows).

The body 213 is provided with a pivot 219 having a lever 220 secured thereon. One end of the lever 220 mounts a wetting element 221 made from porous rubher. The other end of the lever 220 has a rotating roller 222 secured thereon and interacting with a cam 217 provided with a projection 223. The roller 222 is pressed against the surface of the cam 217 by a spring 224.

The device 9 (FIG. 17) for drying sound coils is essentially a bent lever 225 having two contacts 226 secured to the end thereof and insulated from each other and the lever 225 (only one contact being shown in FIG. 17). The contacts 226 are supplied with electric current through electric outlets 227. The lever 225 is secured to a pivot 228 mounted on the stationary base 2. The other end of the lever 225 has a rotating roller 229 fixed thereon for interacting with a cam 230 and being pressed against the surface of the latter by a spring 231. The cam 230 has a projection 232 which is rigidly secured to the distribution shaft 16.

The device 11 (FIG. 18) for cutting outlet jumpers of the wire 190 is made as a body 233 which is capable of displacing in a guide 234. The direction of the displacement is shown by arrows. One end of the body 233 has a knife 235 fixed thereon, while the other end has a rotating roller 236 fixed thereon. The latter is arranged interacting with a cam 237, and is pressed against the surface of the latter by a spring 238. The cam 237 has a projection 239 and is rigidly secured to the distribution shaft 16.

The body 233 mounts a pivot 240 having a lever 241 fixed thereon. One end ofthe lever 24] has a knife 242 fixed thereon and the other one is pivotally connected with the aid of a fork 243 to a pusher 244. The pusher 244 can be displaced in a guide 245 and is pressed by a spring 246 against the side face of a earn 247 rigidly secured to the distribution shaft 16.

The installation for assembly of the movable system fo dynamic loudspeakers functions as follows.

The tumblers of the control board (FIG. 1) switch on the electric motor (FIG. 3), the electric motor 166 (FIG. 14) and the electric motor 197 (FIG. 15). Then, the diffuser 4 is mounted manually onto the mandrel 42 (FIG. 3) at position A (FIG. 2). Upon actuation of the electric magnet 41, the lever 29 moves vertically downwards together with the semi-coupling 28. The semi-coupling 28 engages the semi-coupling 27 and rotation is transmitted from the electric motor 20 via the reducing gear 21 and the bevel gear drive 22 in two directions: to the semi coupling 28, and through the system of the gear drives 40 to the distribution shaft 16 provided with the unit 25 of cams and through the bevel gear drive 26 to the device 5 for fixing the diffuser 4 of a loudspeaker to the reel of a sound coil. The semi-coupling 28 transmits rotation to the Geneva wheel rigidly connected to the base 1 with the aid of the pin entering the slot 36. The Geneva wheel 35 turns the base 1 through 30 or one position; i.e., the diffuser 4 occupies position B (FIG. 2), a next diffuser 4 occupies position A, etc. Thus, at position A the diffuser 4 is only mounted onto the mandrel 42 (FIG. 3). During the time period while the base 1 is turning the roller 47 (FIG. 4) discontacts the cam 48 secured to the stationary base 2, and the resilient planks press the diffuser 4 (FIG. 3) against the mandrel 42 with the aid of the spring 46. After the 30 turn, the base 1 is fixed in this position with the aid of the stop 37 actuated by the electric magnet 38 controlled by the microswitch 39. The microswitch 39 is switched on and off under the action of the cam 40.

At position B (FIG. 2) there takes place formation of the reel of a sound coil and assembly or gluing thereof with the diffuser 4. As it has already been mentioned afore above, the rotation is imparted to the shaft 73 (FIG. 7) through the bevel gear drive 26 (FIG. 3). R0- tation is imparted to the rollers 91 and 92 (FIGS. 9 and 10) through the toothed sector 75, the tapered gear 95, and the gears 94, 97 (FIG. 8). The

rollers

91 and 92 feed the paper band 69 from the bobbin 68 along the guides 112, 113,114 and 115 up to the roller 84, which is imparted rotation by the shaft 73 (FIG. 8) through the cylindrical gears 78 and 80 and the cam 83.

While rotating together with the shaft 73, the cam 76 (FIGS. 7 and 9) imparts an oscillating motion to the lever 98 and the cutting blade 100 (FIG. 9) through the roller 101. The cutting blade 100 cuts off a strip of the band 69 (FIG. 7). The length of the strip of the band 69 from the cutting blade 100 to the roller 84 is equal to the length of the circumference of the reel ofa sound coil. The roller 84 twists the cut-off strip of the band 69 around the cylindrical rod 87. In order to make it easier to perform twisting and to eliminate internal stresses in the band 69, the latter is subjected to the action of the scraper 107 along its portion between the bobbin 68 (FIG. 10) and the

rollers

91 and 92. The force of the action is controlled by the screw 110 with the flywheel 111.

With the strip of the band 69 (FIG. 7) twisted, a reel of a sound coil is formed around the rod 87, the cam 77 raises the rod 87 into its extreme upper position. and a ready reel is delivered into the neck of the diffuser 4.

With the cam 116, which is secured to the distribution shaft 16, rotating, the roller 133 secured to the carriage 132 rolls off the boss of the cam 116, and the carriage 132 together with the batcher 67 of the glue sol vent displaces vertically downwards. Concurrently, one end of the lever 129 encounters the stop 136 secured to the stationary base 2, as a result of which the other end of the lever I29 presses the needle 126. The needle 126 presses the ball 128, and the glue solvent gets from the tank 118 through the

ports

121 and 123 into the capillary gap 125 between the bushing 122 and the ring 124, thereby wetting the neck of the diffuser 4. The glue which was preliminary placed onto the band 69 and then dried is dissolved, as a result of which there takes place gluing together, or fixing, of the sound coil reel and the diffuser 4. After the gluing together, the roller 133 comes again on the boss of the cam I16, and the batcher 67, as well as the cylinder cylindrical rod 87, comes back to its initial position under the action of the cam 77.

Then, the base 1 turns again through 30 in the previously described manner, and the diffuser 4 (FIG. 2) fixed to the reel gets to position C. As the sound coil reel is not sufficiently rigid, the technological mandrel 13 serving as a gauge for the reel is fed into the neck of the diffuser 4 at this position and accompanies the diffuser 4 until the complete assembly of the movable system ofa loudspeaker; i.e., to position N in which the mandrel 13 is pushed out of the neck of the diffuser 4 by the pusher 14 (FIG. 5). Since the pipe 49 of the mechanism 12 for transporting the technological mandrels 13 is completely filled with the technological mandrels 13, while the mandrel 13 is being pushed out in position N (FIG. 2). another mandrel 13 enters another diffuser 4 in position C. This closer the cycle of movement of the mandrels 13. The mandrel 13 (FIG. 5) is pushed out by a lever 50 which has a roller 55 fixed on one end thereof. With the distribution shaft 16 rotating, the roller 55 encounters the projection 58 of the cam 56 which is rigidly secured to the shaft 16. Concurrently, the other end of the lever 50, with the rod 53 pivotally secured thereon, moves downwards to push the mandrel 13 out of the neck of the diffuser 4 (FIG. 2). In order to remove from the mandrel 13 the glue which gets onto the latter while the reel is being glued to the diffuser 4, the mandrels 13 are passed through the tank 59 (FIG. 5) which contains glue solvent. The remaining glue is removed from the mandrels 13 (FIG. 5) in the tank 59 with the aid of the hair brushes 65 (FIG. 6).

Then, the base 1 (FIG. 2) is turned through 30 again and the diffuser 4, together with the reel glued thereto, gets in position D in which the device 3 (FIG. 11) ap plies glue to the reel of a sound coil. The reel 150 (FIGS. 11 and 13) moves away the lubricating roller 149 (FIG. 13), and between the roller 149 and the chamber 147 there is formed a slit 8 through which glue starts to get onto the reel 150. The microswitch (not shown in the drawing) switches on the electric motor 154 (FIG. 11), and rotation is imparted through the bevel gear 156 to the cylindrical sleeve 138 which rotates the chamber 147. The cylindricalgear 151 engaged with the stationary gear 152 rotates the lubricating roller 149. The roller 149 rolls over the reel 150 and the glue is uniformly distributed on the surface of the reel 150. With the gluing completed, the electric motor 154 is switched off, the reel 150 is brought away from the roller 149, and the latter, under the action of the spring 164 (FIG. 12), overlaps the port 163 in the chamber 147, thereby preventing the glue from leaking and drying up.

Then, the base 1 (FIG. 2) is turned through 30 and the diffuser 4 occupies position E in which the sound coil is wound by means of the device 7 (FIG. 14). The motor 166 is switched off constantly. Rotation of the distribution shaft 16 brings the projection 185 of the cam 184 to the roller 183. The projection 185 presses down the roller 183, and the lever 178 moves relative to the pivot 182, as a result of which the semi-coupling 169 is engaged with the semicoupling 168. Rotation is transmitted from the shaft 167 of the electric motor 166 to the shaft 170 and, consequently, to the worm 172 and the cylindrical gear 171, which are rigidly secured on the shaft 170. Rotation is imparted from the gear 171 to the gear 186, which is engaged therewith, and, consequently, to the hollow spindle 187 rigidly connected to the gear 186. The reeling frame 188, mounting the rollers 189 along which passes the wire 190 to be wound, starts rotating together with the hollow spindle 187. Thus, when rotating, the reeling frame winds the wire 190 onto the reel 150. But the reeling frame 188 simultaneously moves in the vertical plane first upwards and then upwards. This movement takes place under the action of the cam 174 rigidly connected to the disk 175 and the worm gear 173 engaged with the worm 172. During displacement of the lever 178 when the semi-coupling 169 engages the semicoupling 168, the roller 180 comes out of the cut 176 of the disk 175. The worm wheel 173 is rotated together with the disk 175 and the cam 174 by the worm 172. Concurrently, the roller 180 rolls over the side face of the disk 175, and the pusher 196 slides by its pointed part along the side face of the cam 174. The cam 174 is made symmetrical and its profile is made so that, with the pointed part of the pusher 196 moving along the side face of the cam 174 with the aid of the link 193 having the

stops

194 and 195, the reeling frame 188 displaces first vertically upwards and then downwards. As a result of this, winding of the wire 190 onto the reel 150 takes place in two layers. After the winding, the roller 183 disengages from the projection 185 of the cam 184, the lever 178 moves under the action of the spring 181, and the semicouplings 168 and 169 are disengaged. Roller 180 moves into the cut 176 again after the disk 175 makes a complete revolution.

With a sound coil now wound, the base 1 (FIG. 2) turns through 30, and the diffuser 4 with the wound sound coil come in position F in which the winding of the sound coil is glued in an analogous manner.

Beginning with position E, in which the sound coil is wound, and ending with position N, the sound coils of the movabale systems of loudspeakers are interconnected by jumpers from the wound wire.

After the sound coil winding is glued, the base 1 (FIG. 2) is turned through 30 again, and the diffuser 4 comes to position G and, then, analogously to position H. Between positions G and H the outlet jumpers of the wire are cleaned with the aid of the device 8. The carriage 198 (FIG. 15), having the electric motor 197 secured to the end thereof, moves vertically downwards when the roller 212 comes off the projection 211 of the cam 209 rotating together with the distribution shaft 16. The rotating elastic abrasive wheels 200 clean the insulation of the outlet jumpers of the wire 190. Simultaneously, the carriage 198 moves in the horizontal plane along the wire 190, this taking place under the action of the stop 210 of the cam 209. By pressing against the body 206, the stop 210 moves the carriage 198 and, consequently, the rotating abrasive wheels 200 along the outlet jumpers of the wire 190. The carriage retracts to its initial position under the action of a spring (not shown in the drawing).

Then, the base 1 (FIG. 2) is turned through 30, and the diffuser 4 occupies position K. Between positions H and K there is effected fluxing of the outlet jumpers of the wire to preclude oxidation of its cleaned portions. The fluxing is carried out with the aid of the device 10 (FIG. 16). With the cam 217 rotating, the roller 215 rolls over its side face, and when the roller 215 gets to the side projection (not shown in the drawing) of the cam 217, the body 213 moves together of the bath 214 with flux, secured thereon, in the direction of the outlet jumpers of the wire 190. The roller 222 comes off the projection 223 of the cam 217, and the lever 220 starts moving under the action of the spring 224, as a result of which the wetting element 221 secured to the other end thereof wets with the flux the portions of the uninsulated outlet jumpers of the wire 190. During further rotation of the cam 217, the roller 222 gets again onto the projection 223 and the wetting element 221 is removed by the lever 220 from the wire 190. The roller 215 also comes off the side projection (not shown in the drawing) of the cam 217, and under the action of the spring 216 the body 213 is removed together with the bath 214 with flux from the wire 190.

In position K there takes place drying of the sound coil with the aid of the device 9 (FIG. 17). During rotation of the cam 280, the roller 229 gets onto its projection 232. The lever 225 displaces relative to the pivot 228 and the contacts 226 are brought to both outlet jumpers of the winding. Electric current passes through the contacts 226 and, while passing through the winding, dries the sound coil. With the roller 229 coming off the projection 232 of the rotating cam 230, the lever 225 moves and the contacts 226 are disengaged from the outlet jumpers of the wire 190.

The base 1 (FIG. 2) is turned through 30 again, and the diffuser 4 occupies position M. Then the diffuser 4 occupies analogously position N. Between positions M and N there is effected cutting of the outlet jumpers by the device 11 (FIG. 18).

As it rolls off the projection 239 of the rotation cam 237, roller 236 lowers the body 233 and the knife. Cam 237 lowers the body 233 when rolling off the projection 239 of the rotating cam 237, and the knife 235 secured to the body 233 and is brought to the jumper of the wire 190. Concurrently, while sliding over the side face of the rotating cam 247, the pusher 344 gets onto its projection (not shown in the drawing), as a result of which the pusher moves in the horizontal plane to displace the lever 241 secured to the pivot 240. At the same time, the knife 242 secured to the end of the lever 241 is brought to the knife 235, as a result of which the outlet jumpers of the wire 190 are cut off. During further rotation of the

cams

237 and 247, the

knives

235 and 242 are brought back to their initial position.

As it has already been said before, in position N the technological mandrel 13 (FIG. 2) is pushed out of the reel (not shown in the drawing) of the sound coil. When the base 1 is turned through 30 again the roller 47 (FIG. 4) gets onto the cam 48 secured to the stationary base 2, the lever 43 is turned around the pivot 44, and the resilient planks 45 disengage the diffuser 4 (FIG. 2). Thereafter, a completely assembled movable system ofa loudspeaker (i.e., a diffuser fixed to a sound coil) comes to position P, from which a ready article is taken.

Thus, during every turn of the base 1 through 30 a diffuser 4 is fed to position A, and a completely ready movable system of a loudspeaker is taken from position P.

I claim: a

1. An installation for assembly of the movable system of dynamic loudspeakers, comprising, in combination: a base carrying diffusers of loudspeakers; a drive for moving said base; a device for securing the diffusers of the loudspeakers to said base; a device for winding wire onto a reel of a sound coil of a loudspeaker; a device for drying the sound coil of the loudspeaker; a device for affixing one of the diffusers of the loudspeakers to the reel of the sound coil; a device for gluing the reel and winding of the sound coil; technological mandrels, each of which is a gauge for the reel and accompanies a diffuser of a loudspeaker from the moment the reel of the loudspeaker is fed into the neck thereof and to the moment of final assembly of the movable system of the loudspeaker; a mechanism for transporting said technological mandrels; and a distribution shaft arranged for ensuring a sequence of operations performed by said devices and mechanism.

2. An installation according to claim 1, wherein said device for fixing the diffuser of the loudspeaker to the reel of the sound coil comprising a mechanism for manufacturing the reel of the sound coil, the mechanism being a cylindrical rod operatively connected to said drive, the sound coil being formed from a glued paper band by means of a rolling roller and fed by the latter into the neck of the diffuser of the loudspeaker, and a batcher of solvent of said glue, the batcher operatively connected to said distribution shaft and being a tank provided with a valve that is opened when said batcher is brought to said neck of the diffuser of the loudspeaker to let an amount of said glue solvent sufficient to glue together the diffuser and the reel of the sound reel get onto the reel.

3. An installation according to claim 2, wherein said device for gluing the reel and the winding of the sound coil comprises a chamber with glue, a driving mechanism controlled by said distribution shaft, and a lubricating roller mounted so that it floats on an axle and is pressed by a spring against a port provided in said chamber with said glue, said lubricating roller being made hollow and provided with slots disposed along the inner diameter thereof, and the axle of said roller being respectively provided with projections.

4. An installation according to claim 1, wherein said device for gluing the reel and the winding of the sound coil comprises a chamber with said glue, a driving mechanism controlled by said distribution shaft. and a lubricating roller mounted so that it floats on an axle and is pressed by a spring against a port provided in said chamber with said glue, said lubricating roller being made hollow and provided with slots disposed along the inner diameter thereof, and the axle of said roller being respectively provided with projections.

5. An installation according to claim 1, wherein said mechanism for transporting said technological mandrels is made as a cylindrical pipe bent along an arch of a circumference and having its ends brought to ports made in said base and disposed coaxially relative to the necks of the diffusers of the loudspeakers to be found in the position of feeding said technological mandrel into the reel of the sound coil and the position in which said technologicalmandrel is pushed out of the reel, and pushers for displacing said technological mandrels in said pipe, the central portion of said pipe being embraced by the tank provided with said solvent for said glue and provided with a spiral groove accommodating a brush for removing said glue from said technological mandrels.

6. An installation according to claim 2, wherein said mechanism for transporting said technological mandrels is made as a cylindrical pipe bent along an arch ofa circumference and having its ends brought to ports made in said base and disposed coaxially relative to the necks of the diffusers of the loudspeakers, to be found at the position of feeding said technological mandrel into the reel of the sound coil and the position at which said technological mandrel is pushed out of the reel, and pushers used for displacing said technological mandrels in said pipe, the central portion of the pipe being embraced by the tank provided with said solvent for said glue and provided with a spiral groove accommodating a brush for removing said glue from said technological mandrels.

7. An installation according to claim 3, wherein said mechanism for transporting said technological mandrels is made as a cylindrical pipe bent along an arch ofa circumference and having its ends brought to ports made in said base and disposed coaxially relative to the necks of the diffusers of the loudspeakers, to be found at the position of feeding said technological mandrel into the reel of the sound coil and the position at which said technological mandrel is pushed out of the reel, and pushers used to displace said technological mandrels in said pipe, the central portion of said pipe being embraced by the tank provided with said solvent for said glue and provided with a spiral groove accommodating a brush for removing said glue from said technological mandrels.

Claims

4. An installation according to claim 1, wherein said device for gluing the reel and the winding of the sound coil comprises a chamber with said glue, a driving mechanism controlled by said distribution shaft, and a lubricating roller mounted so that it floats on an axle and is pressed by a spring against a port provided in said chamber with said glue, said lubricating roller being made hollow and provided with slots disposed along the inner diameter thereof, and the axle of said roller being respectively provided with projections.

5. An installation according to claim 1, wherein said mechanism for transporting said technological mandrels is made as a cylindrical pipe bent along an arch of a circumference and having its ends brought to ports made in said base and disposed coaxially relative to the necks of the diffusers of the loudspeakers to be found in the position of feeding said technological mandrel into the reel of the sound coil and the position in which said technological mandrel is pushed out of the reel, and pushers for displacing said technological mandrels in said pipe, the central portion of said pipe being embraced by the tank provided with said solvent for said glue and provided with a spiral groove accommodating a brUsh for removing said glue from said technological mandrels.

6. An installation according to claim 2, wherein said mechanism for transporting said technological mandrels is made as a cylindrical pipe bent along an arch of a circumference and having its ends brought to ports made in said base and disposed coaxially relative to the necks of the diffusers of the loudspeakers, to be found at the position of feeding said technological mandrel into the reel of the sound coil and the position at which said technological mandrel is pushed out of the reel, and pushers used for displacing said technological mandrels in said pipe, the central portion of the pipe being embraced by the tank provided with said solvent for said glue and provided with a spiral groove accommodating a brush for removing said glue from said technological mandrels.

7. An installation according to claim 3, wherein said mechanism for transporting said technological mandrels is made as a cylindrical pipe bent along an arch of a circumference and having its ends brought to ports made in said base and disposed coaxially relative to the necks of the diffusers of the loudspeakers, to be found at the position of feeding said technological mandrel into the reel of the sound coil and the position at which said technological mandrel is pushed out of the reel, and pushers used to displace said technological mandrels in said pipe, the central portion of said pipe being embraced by the tank provided with said solvent for said glue and provided with a spiral groove accommodating a brush for removing said glue from said technological mandrels.