CN110798769B

CN110798769B - In-ear earphone cord wrapping device

Info

Publication number: CN110798769B
Application number: CN201911152951.XA
Authority: CN
Inventors: 李天勇
Original assignee: Shimen Yongyue Electronic Co ltd
Current assignee: Shimen Yongyue Electronic Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2021-02-26
Anticipated expiration: 2039-11-22
Also published as: CN110798769A

Abstract

The invention discloses a coating device of an in-ear earphone wire, which comprises a rack, wherein an insulating paper roll is arranged on the rack through a hollow shaft, the insulating paper roll is sleeved and limited on the hollow shaft, a rotating disc is welded at the bottom of the hollow shaft, and two traction rollers are fixed at the outer end of the rotating disc; one end of the hollow shaft is sleeved and fixed with a synchronous belt pulley, the synchronous belt pulley is connected with the motor through a transmission belt, a wire inlet guide wheel is fixed at the lower part of the rack, a wire passing barrel opposite to the hollow shaft is further fixed at the upper part of the rack, and a wire outlet guide wheel is arranged above the wire passing barrel. The invention can realize the wrapping of the insulating film paper outside the metal wire, and has simple structure, high working efficiency and good wrapping effect.

Description

In-ear earphone cord wrapping device

Technical Field

The invention relates to the technical field of earphone cord production, in particular to coating equipment of an in-ear earphone cord.

Background

Earphones, also called ear tubes or earphones, are a pair of conversion units which receive electric signals sent by a media player or a receiver and convert the electric signals into audible sound waves by using a loudspeaker close to ears; and the earphone line is a necessary component for a part of the type of earphone. The earphone wire in the prior art is generally twisted in pairs or arranged side by side and covered in a rubber sleeve, and is extremely easy to bend, but suffers instability of at least three dimensions (left-right bending, front-back bending and twisting around a central axis), so that the internal damage of the earphone wire is serious, and the core breaking phenomenon is easy to occur; in addition, two wire signals in the earphone cord are easy to interfere with each other or be interfered by the outside, so that the electrical performance of the earphone cord is influenced, and the tone quality is poor.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a covering device for an in-ear earphone cable with a reasonable structural design, in which one or two layers of insulating film paper are covered on the surface of any one metal wire of the earphone cable to realize the insulation and isolation between the metal wires, and the core is not easily broken when the metal wires are bent under stress.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the coating equipment of the in-ear earphone wire comprises a rack, wherein an insulating paper roll is arranged on the rack through a hollow shaft, the insulating paper roll is sleeved and limited on the hollow shaft, a rotating disc is welded at the bottom of the hollow shaft, a through hole coaxial with the hollow space in the hollow shaft is formed in the center of the rotating disc, and two traction rollers are fixed at the outer end of the rotating disc; one end of the hollow shaft is sleeved and fixed with a synchronous belt pulley, the synchronous belt pulley is connected with a motor through a transmission belt, the end part of the hollow shaft is sleeved on a bearing seat, the bottom of the bearing seat is provided with a wire hole, and the bearing seat is fixed on a rack through a bolt; the lower part of the frame is fixed with a wire inlet guide wheel, the upper part of the frame is also fixed with a wire passing cylinder opposite to the hollow shaft, and the upper part of the wire passing cylinder is provided with a wire outlet guide wheel.

Furthermore, a diameter detection device is arranged on the rack behind the outgoing line guide wheel, the signal output end of the diameter detection device is connected with a PLC arranged on the rack, and the control end of the PLC controls the motor. The detection device is used for detecting whether the final outgoing line diameter is in a composite standard, namely detecting whether the final outgoing line diameter is wrapped by insulating film paper, and if the final outgoing line diameter is not in accordance with the set standard, reversing the motor and withdrawing the paper.

Furthermore, a pressing pair wheel is arranged on the frame behind the diameter detection device. The rotation of the pressing pair wheel can be driven by a motor or can be driven when a metal wire coated with insulating film paper is pulled out.

Furthermore, a miniature pressure sensor is embedded on the outer wall of the traction roller, and the signal output end of the miniature pressure sensor is connected with the PLC. The pressure sensor detects the pressure on the traction roller, namely the tightness of the paper tape winding roller, and when the insulating film paper tape is used up or broken, the pressure of the winding roller is lower than a preset value, and the motor stops working.

Furthermore, the traction roller is hinged on the rotating disk through a 270-degree hinge, and the angle of the insulating film paper is automatically adjusted within a certain range.

Furthermore, a wire pressing device is arranged between the wire inlet guide wheel and the bearing seat on the machine frame.

Furthermore, a laser sensor is fixed on the machine frame on one side of the incoming line guide wheel through a bolt, a signal output end of the laser sensor is connected with a PLC, a control end of the PLC controls the line pressing device, and when the laser sensor detects a line break, the PLC controls the line pressing device to be closed to limit the metal wire to continuously run. The wire ends of broken wires are prevented from entering the hollow shaft, and the wires are not connected well.

Compared with the prior art, the invention has the advantages that: according to the invention, by arranging the rotating disk, the two traction rollers and the like, the metal wire can be wrapped with the insulating film paper, and one layer or two layers can be wrapped according to the requirement, so that the structure is simple, the working efficiency is high, and the wrapping effect is good.

Drawings

FIG. 1 is a schematic structural diagram of the present invention

The device comprises a machine frame 1, a machine frame 2, a hollow shaft 3, a rotating disc 4, a traction roller 5, an insulating film paper winding drum 6, a synchronous belt pulley 7, a motor 8, a bearing seat 9, a wire outgoing guide wheel 10, a wire passing drum 11, a wire incoming guide wheel 12, a diameter detection device 13, a PLC 14, a pressing pair wheel 15, a pressure sensor 16, a wire pressing device 17 and a laser sensor.

Detailed Description

The invention will now be further elucidated with reference to the drawing.

As shown in fig. 1, the coating device of the in-ear earphone wire comprises a frame (or a wallboard) 1, wherein an insulating paper roll 5 is arranged on the frame 1 through a hollow shaft 2, the insulating paper roll 5 is sleeved and limited on the hollow shaft 2 through screws, a rotating disc 3 is welded at the bottom of the hollow shaft 2, a through hole coaxial with the hollow space of the hollow shaft 2 is formed in the center of the rotating disc 3, two traction rollers 4 are fixed at the outer end of the rotating disc 3, before coating, one end of the insulating paper synchronously wound on the upper section and the lower section of the insulating paper roll 5 is pulled out, the two traction rollers 4 are respectively attached to the outside of a metal wire penetrating through the hollow shaft after being wound for several circles, in order to limit the insulating paper on the limiting position of the periphery of the traction rollers, the traction rollers are designed to be large in diameter at two ends and small in middle diameter, and rubber anti-skid sleeves are sleeved outside; one end of the hollow shaft 2 is sleeved and fixed with a synchronous belt pulley 6, the synchronous belt pulley 6 is connected with a motor 7 through a transmission belt, the end part of the hollow shaft 2 is sleeved on a bearing seat 8, the bottom of the bearing seat 8 is provided with a wire hole, and the bearing seat 8 is fixed on the frame 1 through a bolt; the lower part of the frame 1 is fixed with a wire inlet guide wheel 11, the upper part of the frame 1 is also fixed with a wire passing cylinder 10 opposite to the hollow shaft 2, and a wire outlet guide wheel 9 is arranged above the wire passing cylinder 10.

A diameter detection device 12 is arranged behind a wire outlet guide wheel 9 on a rack 1, the diameter detection device 12 applied by the invention is a laser scanning diameter detection sensor in the prior art, the signal output end of the diameter detection device 12 is connected with a PLC13 arranged on the rack 1, the control end of the PLC13 is connected with a motor 7 for detecting whether the final wire outlet diameter is in a composite standard or not, namely whether insulating film paper is wrapped or not is detected, if the insulating film paper is not in accordance with the set standard, the motor rotates reversely and withdraws the paper, and a pay-off mechanism (the pay-off mechanism is in the prior art and comprises a pay-off motor and a pay-off drum) of a metal wire draws the metal wire to withdraw and. Effectively ensures that the insulating film paper covers the metal wire and ensures the product quality.

A pressing pair wheel 14 is arranged on the machine frame 1 behind the diameter detection device 12. The metal wire after being packaged is enabled to be more compact through synchronous reverse rotation of the pressing pair wheels 14 between the pressing pair wheels. The rotation of the pressing pair wheel 14 can be driven by a motor or can be driven when a metal wire coated with insulating film paper is pulled out.

A micro pressure sensor 15 is embedded on the outer wall of the traction roller 4 (particularly on the middle small-diameter section), and the signal output end of the micro pressure sensor 15 is connected with a PLC 13. The pressure sensor 15 detects the pressure on the traction roller 4, namely the tightness of the paper tape winding roller 4, when the insulating film paper tape is used up or broken, the pressure of the winding roller 4 is lower than a preset value, the motor stops working, and the paying-off mechanism of the metal wire also stops paying off.

The traction roller 4 is hinged on the rotating disk 3 through a 270-degree hinge to adjust the angle of the insulation film paper.

The wire pressing device 16 is arranged between the incoming guide wheel 11 and the bearing seat 8 on the machine frame 1 and comprises a limiting plate, an electromagnetic valve core rod and a pressing plate welded to the free end of the electromagnetic valve core rod, wherein the pressing plate and the limiting plate are arranged oppositely, the core rod retracts when the electromagnetic valve core rod is in a non-electrified state, a distance is reserved between the pressing plate and the limiting plate, the metal wire freely penetrates through the distance, when the electromagnetic valve core rod is electrified, the core rod is ejected out, the pressing plate and the limiting plate are closed, and the metal wire is pressed. The laser sensor 17 is fixed on the machine frame on one side of the wire inlet guide wheel 11 through bolts, the signal output end of the laser sensor 17 is connected with the PLC13, the control end of the PLC13 controls the wire pressing device 16, after the laser sensor 17 detects wire breakage, the PLC13 controls the electromagnetic core rod in the wire pressing device to be pushed out, the pressing plate is pressed to be closed with the limiting plate, the metal wire is limited to continue to run, and the wire end of the wire breakage is prevented from entering the hollow shaft 2 and being not easy to wire.

Two sets of paper wrapping machines of the invention are arranged on the frame 1, wherein two rotating disks 3 share one motor 7, thus improving the working efficiency.

When the device works, a metal wire to be coated with the insulating film paper is led in from the wire inlet wheel 11 at the lower part, exposed after passing through the wire hole at the bottom of the bearing seat 8 and the hole of the hollow shaft 2, coated with the insulating film paper for coating in two directions sent by the two traction rollers 4, and led out from the wire outlet guide wheel 9 at the upper part after coating and passing through the hollow part of the wire barrel 10. The invention has reasonable and simple structural design, easy maintenance and low failure rate.

Claims

1. The coating equipment for the in-ear earphone wire comprises a rack and is characterized in that an insulating film paper drum is arranged on the rack through a hollow shaft, the insulating film paper drum is sleeved and limited on the hollow shaft, a rotating disc is welded at the bottom of the hollow shaft, a through hole coaxial with the hollow space in the hollow shaft is formed in the center of the rotating disc, and two traction rollers are fixed at the outer end of the rotating disc; one end of the hollow shaft is sleeved and fixed with a synchronous belt pulley, the synchronous belt pulley is connected with a motor through a transmission belt, the end part of the hollow shaft is sleeved on a bearing seat, the bottom of the bearing seat is provided with a wire hole, and the bearing seat is fixed on a rack through a bolt; the lower part of the frame is fixed with a wire inlet guide wheel, the upper part of the frame is also fixed with a wire passing cylinder opposite to the hollow shaft, and the upper part of the wire passing cylinder is provided with a wire outlet guide wheel.

2. The apparatus as claimed in claim 1, wherein a diameter detecting device is disposed on the frame behind the wire-outlet guide wheel, a signal output terminal of the diameter detecting device is connected to a PLC disposed on the frame, and a control terminal of the PLC controls the motor.

3. The apparatus for covering an in-ear earphone line according to claim 2, wherein a pressing pair of wheels is provided on the frame behind the diameter detecting means.

4. The apparatus for covering an in-ear earphone line according to claim 1, 2 or 3, wherein a micro pressure sensor is embedded in the outer wall of the pulling roller, and a signal output terminal of the micro pressure sensor is connected to the PLC.

5. The apparatus for covering an in-ear earphone line according to claim 4, wherein the pulling drum is hinged to the rotating plate by a 270 ° hinge.

6. The apparatus as claimed in claim 5, wherein a wire pressing device is disposed on the frame between the guide roller and the bearing seat.

7. The apparatus as claimed in claim 6, wherein the frame on one side of the wire-feeding guide wheel is fixed with a laser sensor by a bolt, the signal output end of the laser sensor is connected with a PLC, the control end of the PLC controls the wire pressing device, and when the laser sensor detects a wire break, the PLC controls the wire pressing device to close to limit the metal wire to continue to run.