CN114589371A

CN114589371A - Automatic welding machine for PTC ceramic heating element

Info

Publication number: CN114589371A
Application number: CN202210351618.7A
Authority: CN
Inventors: 胡伟峰
Original assignee: Linhai Yanke Automation Technology Co ltd
Current assignee: Linhai Yanke Automation Technology Co ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-06-07

Abstract

The invention discloses an automatic welding machine for a PTC ceramic heating element, which belongs to the technical field of machining equipment and comprises a first lead machining station (2), a second lead machining station (3) and a connecting station (4) for a lead and the PTC ceramic heating element, wherein the first lead machining station (2) is provided with a first lead feeding device (7), a first lead stripping device (8), a first soldering flux feeding device (9), a PTC ceramic heating element mounting device (10), a PTC ceramic heating element overturning device (11), a lead shifting device (12), a second soldering flux feeding device (13) and a blanking device (14), the second lead machining station (3) is provided with a second lead feeding device (19), a second lead stripping device (20), a third soldering flux feeding device (21) and a lead recovery device (113), and the full-automatic welding between the lead and the PTC ceramic heating element can be realized, the working efficiency is high, and the welding precision can be effectively ensured.

Description

Automatic welding machine for PTC ceramic heating element

Technical Field

The invention belongs to the technical field of machining equipment, and particularly relates to an automatic welding machine for a PTC (positive temperature coefficient) ceramic heating element, which is used for fully automatically assembling a lead and the PTC ceramic heating element.

Background

PTC resin is a high temperature resistant, semi-crystalline thermoplastic, and PTC and its modified products are often used in the electronic and electric appliance fields, such as junction boxes, sockets, integrated circuit boards, plug and slot plate assemblies, relay elements and wireless communication equipment elements, and have better development trend in miniaturization and surface processing technology auxiliary equipment.

The welding between PTC ceramic heating element and wire is that need cut the wire into prefabricated length earlier to peel off the insulating skin of wire one end or both ends tip, weld the welding part on the core conductor that exposes and the PTC ceramic heating element together through the hot melting soldering tin. In the prior art, the process is finished manually, the manual labor intensity is high, the production efficiency is low, and the PTC ceramic heating element is difficult to clamp manually due to small volume of the PTC ceramic heating element, so that the PTC ceramic heating element is easy to damage and fall; or the welding between the PTC ceramic heating body and the lead is divided into different processing steps, and the PTC ceramic heating body and the lead are transferred and processed on different processing devices to form semi-automatic assembly line processing, but the processing mode causes poor continuity between the processing steps, easily causes uneven welding between the lead and the PTC ceramic heating body, and cannot ensure the processing precision requirement.

Disclosure of Invention

The invention aims to overcome the technical problems that the connection mode between a lead and a PTC ceramic heating element is low in efficiency, the welding precision between the lead and the PTC ceramic heating element cannot be ensured and the like in the prior art, provides an automatic welding machine for the PTC ceramic heating element, which can fully automatically assemble the lead and the PTC ceramic heating element, has high working efficiency and can ensure the welding precision between the lead and the PTC ceramic heating element.

In order to solve the technical problem, the invention provides an automatic welding machine for a PTC ceramic heating element, which comprises a workbench, wherein a first lead processing station and a second lead processing station are respectively arranged on the workbench, a lead connecting station for a lead and the PTC ceramic heating element is arranged between the first lead processing station and the second lead processing station, a first rotary table and a first driving mechanism for driving the first rotary table to rotate are arranged on the first lead processing station, a first clamping mechanism for clamping a first lead is arranged on the outer edge of the first rotary table along the circumferential direction of the first rotary table, a first lead feeding device, a first lead stripping device, a first scaling powder feeding device, a PTC ceramic heating element mounting device, a PTC ceramic heating element overturning device, a lead shifting device, a second scaling powder feeding device and a blanking device are sequentially arranged on the workbench along the rotating direction of the first rotary table, a first inductor is arranged between the first lead feeding device and the first lead stripping device, a second inductor is arranged between the PTC ceramic heating element mounting device and the PTC ceramic heating element overturning device, a second turntable and a second driving mechanism for driving the second turntable to rotate are arranged on the second wire processing station, a second clamping mechanism for clamping a second wire is arranged at the outer edge of the second rotary table along the circumferential direction of the second clamping mechanism, a second lead feeding device, a second lead stripping device, a third scaling powder feeding device and a third lead recovery device are sequentially arranged on the workbench along the rotating direction of the second rotary table, a third inductor is arranged between the second lead feeding device and the second lead stripping device, a fourth inductor is arranged between the lead mounting device and the lead recovery device, and a lead mounting device is arranged on a connecting station of the lead and the PTC ceramic heating element.

As a further improvement measure of the invention, the first clamping mechanism comprises a first mounting block, a first clamp and a second clamp, wherein the first mounting block is sequentially arranged at the outer edge of the first rotary table along the circumferential direction, the first clamp and the second clamp are oppositely arranged and are respectively hinged with the first mounting block, the lower end of the first clamp is provided with a first clamping part, the first clamping part inclines towards the second clamp, the lower end of the second clamp is provided with a second clamping part, the second clamping part inclines towards the first clamp, the upper end of the first clamp is provided with a first connecting part, the upper end of the second clamp is provided with a second connecting part, an elastic part I is arranged between the first connecting part and the second connecting part, a first control device for controlling the first clamping mechanism to open and close is arranged at the first wire feeding device, the first PTC ceramic heating element overturning device, the wire shifting device and the second wire blanking device, and the first control device comprises a third driving mechanism which is arranged on the workbench and is longitudinally driven and a first control device which is arranged along the longitudinal direction And the first compression rod is arranged at the three output ends of the driving mechanism, and the lower end of the first compression rod corresponds to the first elastic piece.

As a further improvement measure of the invention, the second clamping mechanism comprises a third clamp and a fourth clamp, the third clamp and the fourth clamp are sequentially arranged on the upper surface of the second rotary table along the circumferential direction, through holes for a clamping rod to pass through are formed in the second rotary table along the axial direction of the second rotary table, the through holes are sequentially distributed along the circumferential direction of the second rotary table and correspond to the fourth clamp, the upper end of the clamping rod is connected with the fourth clamp, a fastening piece is sleeved at the lower end of the clamping rod, an elastic piece II is arranged between the fastening piece and the lower surface of the second rotary table, a second control device for controlling the second clamping mechanism to open and close is arranged at the second wire feeding device, the second wire mounting device and the second wire recovery device, the second control device comprises a fourth driving mechanism and a second pressing rod, the fourth driving mechanism is arranged below the second rotary table for longitudinal driving, and the second pressing rod is arranged at the output end of the fourth driving mechanism along the longitudinal direction, the upper end of the second compression rod corresponds to the lower end of the clamping rod.

As a further improvement measure of the invention, the wire feeding device comprises a wire feeding mechanism and a wire cutting mechanism, a first fixed seat and a fifth driving mechanism for driving the first fixed seat to horizontally move along the wire conveying direction are arranged on the workbench, the wire feeding mechanism comprises a first tension wheel assembly and a first pinch roller assembly which are arranged on the first fixed seat, the first pinch roller assembly is arranged between the tension wheel assembly and the wire cutting mechanism, the first pinch roller assembly comprises a first upper pinch roller and a first lower pinch roller which rotate relatively, a first conveying pipe for the wire to pass through is arranged between the first pinch roller assembly and the tension wheel assembly and between the first pinch roller assembly and the wire cutting mechanism, the wire cutting mechanism comprises a first upper moving knife and a first lower moving knife which respectively correspond to the wire, and a sixth driving mechanism is arranged on the workbench, the output end of the driving mechanism six is provided with a first connecting frame used for fixing the first upper moving blade and a second connecting frame used for fixing the first lower moving blade, and the driving mechanism six is used for driving the first connecting frame and the second connecting frame to move oppositely.

As a further improvement measure of the invention, one side of the wire cutting mechanism facing the wire feeding mechanism is provided with a wire inner end stripping mechanism, the wire inner end stripping mechanism comprises an upper moving blade II and a lower moving blade II which are respectively corresponding to the wires, the upper moving blade II is also fixed on the connecting frame I, the height of the lower end of the upper moving blade II is higher than that of the lower end of the upper moving blade I, the lower moving blade II is also fixed on the connecting frame II, the height of the upper end of the lower moving blade II is lower than that of the upper end of the upper moving blade I, the wire inner end stripping mechanism also comprises an air blowing pipe corresponding to the lower moving blade II, a first recovery barrel is arranged below the lower moving blade II, one side of the wire cutting mechanism far away from the wire feeding mechanism is provided with a wire positioning mechanism I, the wire positioning mechanism I comprises an upper positioning plate I and a lower positioning plate I which are respectively corresponding to the wires, one side face, facing the wires, of the upper positioning plate I is provided with a first groove, one side face, facing the wires, of the lower positioning plate I is provided with a second groove corresponding to the first groove, and a seventh driving mechanism for driving the upper positioning plate I and the lower positioning plate I to move relatively is arranged on the workbench.

As a further improvement measure of the invention, the first lead wire stripping device comprises a second lead wire outer end wire stripping mechanism and a second lead wire positioning mechanism, the workbench is provided with a second fixed seat and an eighth driving mechanism for driving the second fixed seat to horizontally move towards the lead wire direction, the second lead wire outer end wire stripping mechanism comprises a third upper movable knife and a third lower movable knife which are respectively corresponding to the lead wire, a second recovery barrel is arranged below the third lower movable knife, the second fixed seat is provided with a ninth driving mechanism, the output end of the ninth driving mechanism is provided with a third connecting frame for fixing the third upper movable knife and a fourth connecting frame for fixing the third lower movable knife, the ninth driving mechanism is used for driving the third connecting frame and the fourth connecting frame to move towards each other, the second lead wire positioning mechanism comprises a second upper positioning plate and a second lower positioning plate which are respectively corresponding to the lead wire, and a third groove is arranged on one side surface of the second upper positioning plate facing the lead wire, a fourth groove corresponding to the three phases of the grooves is formed in one side face, facing the lead, of the second lower positioning plate, and a driving mechanism ten used for driving the second upper positioning plate and the second lower positioning plate to move relatively is arranged on the workbench.

As a further improvement measure of the invention, the first scaling powder feeding device comprises a first storage barrel for placing scaling powder and a first sponge for dipping the scaling powder, the first storage barrel is arranged below the lead, the first sponge is arranged in the first storage barrel, a eleventh driving mechanism for longitudinal driving is arranged on the workbench, and a fifth connecting frame for fixing the first sponge is arranged at the output end of the eleventh driving mechanism.

As a further improvement measure, the PTC ceramic heating element mounting device comprises a PTC ceramic heating element feeding mechanism, a soldering tin wire feeding mechanism I and a welding mechanism I, wherein the PTC ceramic heating element feeding mechanism comprises a vibrating disc for placing the PTC ceramic heating element and a linear feeder arranged at a discharge port of the vibrating disc, a fifth inductor corresponding to the PTC ceramic heating element is arranged at one end, facing the vibrating disc, of the linear feeder, a first support and a second support are respectively arranged on the workbench, the soldering tin wire feeding mechanism I comprises a first storage device which is rotatably arranged on the first support and used for storing soldering tin and a second pressing roller component which is arranged on the second support and used for conveying the soldering tin wires, the second pressing roller component comprises a second upper pressing roller and a second lower pressing roller which are relatively rotated, and the soldering tin wires are arranged between the first storage device and the second pressing roller component and between the second pressing roller component and the first welding mechanism and pass through The conveyer pipe two, welding mechanism one including set up in fixture below and with the corresponding heater of wire one, and set up in the first tin bath of appearance of heater upper end, hold tin bath one with be provided with the storage section of thick bamboo two that is used for placing the scaling powder between the sharp feeder and be used for being stained with the sponge two that soaks the scaling powder, be provided with on the workstation and be used for the drive the sponge two is in along the actuating mechanism twelve of longitudinal direction motion in the storage section of thick bamboo two.

As a further improvement measure of the invention, a third wire positioning mechanism is arranged between the welding mechanism and the first clamping mechanism, the third wire positioning mechanism comprises a third upper positioning plate and a third lower positioning plate which are respectively corresponding to the wires on the first clamping mechanism, a fifth groove is arranged on one side surface of the third upper positioning plate facing the wires, a sixth groove corresponding to the fifth groove is arranged on one side surface of the third lower positioning plate facing the wires, a thirteen driving mechanism for driving the third upper positioning plate and the third lower positioning plate to do relative motion is arranged on the workbench, a discharging groove is arranged at the end part of one end of the linear feeder facing the clamping mechanism, one end of the discharging groove is communicated with the linear feeder, a baffle is arranged at the other end of the discharging groove, and a limiting piece which is contacted with the upper surface of the PTC ceramic heating body is arranged on the linear feeder, and the distance between locating part and the baffle is the length of a PTC ceramic heating element, the top of blowing groove is provided with clamping jaw one and is used for the drive a pair of PTC ceramic heating element of clamping jaw carries out centre gripping driving piece one, clamping jaw one can be along vertical or horizontal direction motion under actuating mechanism fourteen.

As a further improvement measure of the invention, a third fixed seat corresponding to the first clamping mechanism is arranged on the workbench, the PTC ceramic heating element turnover device comprises a second clamping jaw arranged on the third fixed seat and opposite to the PTC ceramic heating element and a second driving element for driving the two pairs of the clamping jaws to clamp the PTC ceramic heating element, a mounting hole for a rotating shaft to pass through is arranged on the third fixed seat along the axial direction of a lead, one end of the rotating shaft is connected with the second clamping jaw, a fifteen driving mechanism for driving the rotating shaft to move towards the first clamping mechanism is arranged at the other end of the rotating shaft, a sixteen driving mechanism for driving the rotating shaft to rotate is arranged on the third fixed seat, a first belt pulley is arranged at the output end of the sixteen driving mechanism, a second belt pulley is sleeved on the rotating shaft, and a belt is arranged between the first belt pulley and the second belt pulley, the inner wall of the second belt pulley is provided with a groove body along the self axial direction, the groove body is distributed along the circumferential direction of the belt pulley, a protrusion corresponding to the groove body is arranged in the rotating shaft along the self axial direction, and the protrusion is distributed along the circumferential direction of the rotating shaft.

As a further improvement measure of the invention, a fixed seat four corresponding to the clamping mechanism one is arranged on the workbench, the wire shifting device comprises a clamping jaw three arranged on the fixed seat four and corresponding to the PTC ceramic heating element, and a driving element three for driving the clamping jaw three to clamp the PTC ceramic heating element, and a driving mechanism seventeen for driving the clamping jaw three to move towards the PTC ceramic heating element is arranged on the fixed seat four.

As a further improvement measure of the invention, the lead installation device comprises a fourth lead positioning mechanism, a second solder wire feeding mechanism and a second welding mechanism, wherein the fourth lead positioning mechanism comprises a fourth upper positioning plate and a fourth lower positioning plate which are respectively corresponding to the leads on the second clamping mechanism, a seventh groove is formed in one side surface of the fourth upper positioning plate facing the leads, an eighth groove corresponding to the seventh groove is formed in one side surface of the fourth lower positioning plate facing the leads, a eighteen driving mechanism for driving the fourth upper positioning plate and the fourth lower positioning plate to move relatively is arranged on the workbench, a third bracket and a fourth bracket are respectively arranged on the workbench, the second solder wire feeding mechanism comprises a second storage device which is rotatably arranged on the third bracket and used for storing solder and a third compression roller assembly which is rotatably arranged on the fourth bracket and used for conveying the solder wires, the third pressing roller component comprises an upper pressing roller III and a lower pressing roller III which rotate relatively, a third conveying pipe for solder wires to pass through is arranged between the second stocker and the third pressing roller component and between the third pressing roller component and the second welding mechanism, and the second welding mechanism comprises a second heater and a second tin containing groove, the second heater is arranged between the first rotary table and the second rotary table and below the wires, and the second tin containing groove is arranged at the upper end of the second heater.

As a further improvement measure of the present invention, the blanking device includes a conveyor belt disposed on the workbench and a nineteen driving mechanism for driving the conveyor belt to convey, the conveyor belt is disposed below the first turntable, and the conveyor belt is disposed between the first wire feeding device and the wire mounting device.

As a further improvement measure of the invention, a fixed seat five corresponding to the clamping mechanism two is arranged on the workbench, the lead wire recovery device comprises a clamping jaw two arranged on the fixed seat five and opposite to the lead wire, and a driving piece four used for driving the clamping jaw four to clamp the lead wire, and a driving mechanism twenty used for driving the clamping jaw four to move towards the lead wire direction is arranged on the fixed seat five.

Compared with the prior art, the invention has the beneficial effects that: 1. according to the invention, the first lead processing station, the second lead processing station and the connecting station of the leads and the PTC ceramic heating element are integrated on the same workbench, so that two leads can be processed at the same time, the two processed leads are respectively welded with the PTC ceramic heating element, and the welding of a single lead and the PTC ceramic heating element can be completed, thereby being beneficial to improving the production efficiency, saving the production time, having higher flexibility and being beneficial to saving the cost; 2. the invention finishes the cutting of a first lead, the stripping of the inner and outer ends and the welding between the first lead and the PTC ceramic heating element by leading the first lead to sequentially pass through a first lead feeding device, a first lead stripping device, a first scaling powder feeding device, a PTC ceramic heating element mounting device, a PTC ceramic heating element overturning device, a lead shifting device and a second scaling powder feeding device through the rotation of a first rotary table, finishes the cutting of a second lead and the stripping of the inner and outer ends by leading the second lead to sequentially pass through a second lead feeding device, a second lead stripping device and a third scaling powder feeding device through the rotation of the second rotary table, finishes the cutting of the second lead and the stripping of the inner and outer ends, and realizes the welding between the second lead and the PTC ceramic heating element through a lead mounting device, unifies the feeding of the first lead, the second lead and the PTC ceramic heating element and the welding among the three, and avoids the deviation of one lead in the processing process, the problem of inaccurate welding is caused, and the product quality is ensured; 3. according to the invention, the sensor is arranged between the corresponding devices, so that the processing condition of the wire can be clearly detected and fed back in time, the product quality is improved, and defective products are avoided; 4. the cam assembly drives each processing device and mechanism to move, so that the synchronous starting and stopping of each processing step can be realized, the production efficiency can be improved, the use of a motor and an air cylinder is reduced, and the space on a workbench is saved.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is an enlarged perspective view of the first rotary disk of the present invention.

Fig. 5 is an enlarged view of a portion I in fig. 4.

FIG. 6 is an enlarged perspective view of a second rotary disk of the present invention.

Fig. 7 is an enlarged perspective view of a first wire feeding device of the present invention.

Fig. 8 is an enlarged perspective view of the first wire feeding device of the present invention.

Fig. 9 is an enlarged view of a portion H in fig. 8.

Fig. 10 is an enlarged perspective view of a first wire stripping apparatus of the present invention.

Fig. 11 is an enlarged perspective view of a first flux loading device of the present invention.

FIG. 12 is an enlarged perspective view of a PTC ceramic heating element mounting device according to the present invention. .

FIG. 13 is an enlarged plan view of the PTC ceramic heating element mounting device of the present invention.

FIG. 14 is an enlarged perspective view of a PTC ceramic heat-generating body inverting device of the present invention.

Fig. 15 is an enlarged perspective view of the wire shifting device of the present invention.

Fig. 16 is an enlarged perspective view of a second flux loading device of the present invention.

Fig. 17 is an enlarged perspective view of a second wire feeding device according to the present invention.

Fig. 18 is an enlarged perspective view of a second wire feeding device according to the present invention.

Fig. 19 is an enlarged view of the portion P in fig. 18.

Fig. 20 is an enlarged perspective view of a second wire stripping apparatus in accordance with the present invention.

Fig. 21 is an enlarged perspective view of a third flux loading device of the present invention.

Fig. 22 is an enlarged view of the wire installation set of the present invention.

Fig. 23 is an enlarged view of the wire recovery device of the present invention.

The reference numbers illustrate: 1-a workbench, 2-a first lead processing station, 3-a second lead processing station, 4-a connecting station of leads and PTC ceramic heating elements, 5-a first rotary table, 6-a first clamping mechanism, 7-a first lead feeding device, 8-a first lead stripping device, 9-a first soldering flux feeding device, 10-a mounting device of PTC ceramic heating elements, 11-a turnover device of PTC ceramic heating elements, 12-a lead shifting device, 13-a second soldering flux feeding device, 14-a blanking device, 15-a first inductor, 16-a second inductor, 17-a second rotary table, 18-a second clamping mechanism, 19-a second lead feeding device, 20-a second lead stripping device, 21-a third soldering flux feeding device, 22-a fourth inductor and 23-a first mounting block, 24-clamp one, 25-clamp two, 26-clamp one, 27-clamp two, 28-connecting part one, 29-connecting part two, 30-elastic part one, 31-control device one, 32-pressing rod one, 33-clamp three, 34-clamp four, 35-clamping rod, 36-fastener, 37-elastic part two, 38-control device two, 39-pressing rod two, 40-fixing seat one, 41-tensioning wheel assembly, 42-pressing roller assembly one, 43-upper pressing roller one, 44-lower pressing roller one, 45-conveying pipe one, 46-upper moving blade one, 47-lower moving blade one, 48-connecting frame one, 49-connecting frame two, 50-upper moving blade two, 51-lower moving blade two, 52-blowing pipe, 53-recycling cylinder I, 54-upper positioning plate I, 55-lower positioning plate I, 56-groove I, 57-groove II, 58-fixing seat II, 59-upper moving blade III, 60-lower moving blade III, 61-recycling cylinder II, 62-connecting frame III, 63-connecting frame IV, 64-upper positioning plate II, 65-lower positioning plate II, 68-material storage cylinder I, 69-sponge I, 70-connecting frame V, 71-vibrating plate, 72-linear feeder, 73-bracket I, 74-pressing roller assembly II, 75-upper pressing roller II, 76-lower pressing roller II, 77-conveying pipe II, 78-heater I, 79-tin containing groove I, 80-material storage cylinder II, 81-sponge II, 82-upper positioning plate III, 83-lower positioning plate III, 86-discharge groove, 87-baffle, 88-clamping jaw I, 89-fixed seat III, 90-clamping jaw II, 91-rotating shaft, 92-belt pulley I, 93-belt pulley II, 94-belt, 95-fixed seat IV, 96-clamping jaw III, 97-upper positioning plate IV, 98-lower positioning plate IV, 101-support III, 102-support IV, 103-storage box II, 104-pressing roller assembly III, 105-upper pressing roller III, 106-lower pressing roller III, 107-conveying pipe III, 108-heater II, 109-tin containing groove II, 110-conveying belt, 111-fixed seat V, 112-clamping jaw IV, 113-lead recovery device, 114-inductor III, 115-lead installation device, 116-support II, 117-storage box I, 118-inductor five, 119-limiting rod one, 120-limiting rod two.

Detailed Description

The invention will be further explained with reference to the drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.

As shown in fig. 3, the automatic welding machine for the PTC ceramic heating element comprises a workbench 1, wherein a first lead processing station 2 and a second lead processing station 3 are respectively arranged on the workbench 1, a first lead is processed through the first lead processing station 2 and is connected with the PTC ceramic heating element, a second lead is processed through the second lead processing station 3, and a lead and PTC ceramic heating element connecting station 4 is arranged between the first lead processing station 2 and the second lead processing station 3 and is used for connecting the PTC ceramic heating element on the first lead with the second lead.

As shown in fig. 1, 3, 4 and 5, a first wire processing station 2 is provided with a first rotating disk 5 and a first driving mechanism for driving the first rotating disk 5 to rotate, the outer edge of the first rotating disk 5 is provided with a first clamping mechanism 6 for clamping a first wire along the circumferential direction, the first clamping mechanism 6 comprises a first mounting block 23 arranged on the outer edge of the first rotating disk 5 along the circumferential direction, a first clamp 24 and a second clamp 25 which are oppositely arranged and hinged with the first mounting block 23 respectively, the lower end of the first clamp 24 is provided with a first clamping part 26, the first clamping part 26 inclines towards the second clamp 25, the lower end of the second clamp 25 is provided with a second clamping part 27, the second clamping part 27 inclines towards the first clamp 24, so that the first clamp 24 and the second clamp 25 are in a scissor shape, the upper end of the first clamp 24 is provided with a first connecting part 28, the upper end of the second clamp 25 is provided with a second connecting part 29, a first elastic part 30 is arranged between the first connecting part 28 and the second connecting part 29, in this embodiment, the first elastic member 30 is provided as a tension spring. The first connecting part 28 and the second connecting part 29 are tensioned by the elastic force of the first elastic part 30, and the first clamping part 26 and the clamping part 27 are clamped, so that the first wire is clamped.

As shown in fig. 1 and 3, a first wire feeding device 7, a first wire stripping device 8, a first flux feeding device 9, a PTC ceramic heating element mounting device 10, a PTC ceramic heating element turnover device 11, a wire shifting device 12, a second flux feeding device 13 and a blanking device 14 are sequentially arranged on a workbench 1 along the rotation direction of a first turntable 5, a reasonable workpiece layout is adopted on the workbench 1, the first turntable 5 drives a first clamping mechanism 6 to rotate, and a first wire is conveyed to each device for processing, so that the continuous processing production of the first wire is realized, and the first wire is connected with the PTC ceramic heating element, the production time is saved, and the production efficiency is improved.

As shown in fig. 1, 2, 4 and 5, since the first wire needs to be closed after the first clamping mechanism 6 is opened when the first wire is fed, turned, shifted and discharged, the first control device 31 for controlling the opening and closing of the first clamping mechanism 6 is arranged at the first wire feeding device 7, the PTC ceramic heating element turning device 11, the first wire shifting device 12 and the first wire discharging device 14, the first control device 31 comprises a third driving mechanism which is arranged on the worktable 1 and is driven longitudinally and a first pressing rod 32 which is arranged at the output end of the third driving mechanism along the longitudinal direction, the lower end of the first pressing rod 32 corresponds to the first elastic member 30, the third driving mechanism drives the first pressing rod 32 to move towards the first elastic member 30 to separate the first connecting portion 28 from the second connecting portion 29, so that the first clamping portion 26 and the second clamping portion 27 are separated to allow the first wire to be fed or discharged, and after the third driving mechanism stops, the first pressing rod 32 is separated, the first connecting part 28 and the second connecting part 29 are reset due to the elastic force of the first elastic piece 30, and the first clamping part 26 and the second clamping part 27 interact to clamp the wire.

As shown in fig. 1, a first inductor 15 is arranged between the first lead feeding device 7 and the first lead stripping device 8, and is used for detecting whether a first lead is clamped on the first clamping mechanism 6 after being fed by the first lead feeding device 7, namely whether the first lead is successfully fed; a second sensor 16 is arranged between the PTC ceramic heating element installation device 10 and the PTC ceramic heating element turnover device 11 and used for detecting whether a PTC ceramic heating element is arranged on a first lead at the position of the PTC ceramic heating element installation device 10 or not, namely whether the PTC ceramic heating element is successfully installed or not, if the first sensor 15 detects that the feeding of the first lead fails or the second sensor 16 detects that the installation of the PTC ceramic heating element fails, an alarm is given, and the automatic welding machine for the PTC ceramic heating element stops working, so that the arrangement is favorable for improving the product quality and the yield.

As shown in fig. 1, 3 and 6, a second turntable 17 and a second driving mechanism for driving the second turntable 17 to rotate are arranged on the second wire processing station 3, a second clamping mechanism 18 for clamping a second wire is arranged on the outer edge of the second turntable 17 along the circumferential direction, the second clamping mechanism 18 comprises a third clamp 33 and a fourth clamp 34, the third clamp 33 and the fourth clamp 34 are sequentially arranged on the upper surface of the second turntable 17 along the circumferential direction, through holes for the clamping rods 35 to pass through are formed in the second turntable 17 along the axial direction, the through holes are sequentially distributed along the circumferential direction of the second turntable 17 and correspond to the fourth clamp 34, the upper ends of the clamping rods 35 are connected with the fourth clamp 34, a fastening piece 36 is sleeved at the lower end of the clamping rods 35, and a second elastic piece 37 is arranged between the fastening piece 36 and the lower surface of the second turntable 17. In this embodiment, the second elastic member 37 is configured as an extension spring, and the third clamp 33 and the fourth clamp 34 clamp the second wire together by the elastic force of the second elastic member 37.

As shown in fig. 1, a second wire feeding device 19, a second wire stripping device 20, a third flux feeding device 21 and a second wire recovery device 113 are sequentially arranged on the workbench 1 along the rotation direction of the second rotary table 17, a reasonable workpiece layout is adopted on the workbench 1, the second rotary table 17 drives the second clamping mechanism 18 to rotate, the second wire is conveyed to each device for processing, and the second wire is connected with the PTC ceramic heating element on the first wire, so that the continuous processing production of the second wire is realized, the production time is saved, and the production efficiency is improved.

And a third sensor 114 is arranged between the second wire feeding device 19 and the second wire stripping device 20 and is used for detecting whether a second wire is clamped on the second clamping mechanism 18 after the second wire is fed by the second wire feeding device 19, namely whether the second wire is fed successfully, if the third sensor 114 detects that the second wire is fed unsuccessfully, an alarm is given, and the automatic welding machine for the PTC ceramic heating body stops working, so that the product quality is improved, and the yield is improved.

As shown in fig. 1 and 3, a wire installation device 115 is arranged on the wire and PTC ceramic heating element connection station 4, a fourth inductor 22 is arranged between the wire installation device 115 and the wire recovery device 113, and is used for detecting whether a second wire is clamped on the second clamping mechanism 18 after passing through the wire installation device 115, that is, whether the second wire and the PTC ceramic heating element are successfully connected, if the second wire is detected by the fourth inductor 22, the wire recovery device 113 is started to recover the second wire on the second clamping mechanism 18, so as to avoid that the second wire is brought to the second wire feeding device 19 by the second clamping mechanism 18, which affects the processing of the second wire processing station 3.

As shown in fig. 1 and 6, the second wire feeding device, the connection between the second wire and the PTC ceramic heating element, and the recovery of the second wire all need to open the second clamping mechanism 18 and then close the second clamping mechanism, so the second control device 38 for controlling the opening and closing of the second clamping mechanism 18 is arranged at the second wire feeding device 19, the second wire installation device 115, and the second wire recovery device 113, the second control device 38 includes a fourth driving mechanism arranged below the second rotary table 17 for longitudinal driving and a second pressing rod 39 arranged at the four output ends of the driving mechanism along the longitudinal direction, and the upper end of the second pressing rod 39 corresponds to the lower end of the clamping rod 35. The driving mechanism IV drives the second pressing rod 39 to move towards the clamping rod 35, drives the clamping rod 35 to move upwards along the longitudinal direction, so that the third clamp 33 and the fourth clamp 34 are separated, and a second wire can enter or be taken out. When the driving mechanism IV stops driving, the clamping rod 35 is reset by the elasticity of the second elastic piece 37, and the third clamp 33 and the fourth clamp 34 are clamped.

As shown in fig. 1, 7, 8 and 9, the first wire feeding device 7 includes a wire feeding mechanism and a wire cutting mechanism. The workbench 1 is provided with a first fixed seat 40 and a fifth driving mechanism for driving the first fixed seat 40 to horizontally move along the wire conveying direction, the wire feeding mechanism comprises a tension wheel assembly 41 and a compression roller assembly 42 which are arranged on the first fixed seat 40, and the compression roller assembly 42 is arranged between the tension wheel assembly 41 and the wire cutting mechanism. The tension wheel assembly 41 comprises a plurality of tension wheels, the tension wheels are arranged on the first fixing seat 40 through a connecting frame, and the conducting wires are sequentially wound on the tension wheels, so that the conducting wires can be tensioned, and the conducting wires can be conveniently conveyed. The first pinch roller assembly 42 comprises an upper pinch roller 43 and a lower pinch roller 44 which rotate relatively, a first servo motor for driving the lower pinch roller 44 to rotate is arranged on the first fixing seat 40, and the upper pinch roller 43 is driven to rotate by the rotation of the lower pinch roller 44 so as to convey the wires. Because the conducting wire is soft, the conveying pipes 45 for the conducting wire to pass through are arranged between the first pinch roller assembly 42 and the tension roller assembly 41 and between the first pinch roller assembly 42 and the conducting wire cutting mechanism, so that the conducting wire is conveniently conveyed.

A gap for a lead to pass through is arranged between an upper pinch roller I43 and a lower pinch roller I44, in order to adapt to the conveying of leads with different sizes and thicknesses, a first adjusting assembly for adjusting the size of the gap between the upper pinch roller I43 and the lower pinch roller I44 is arranged on a first fixing seat 40, the first adjusting assembly comprises a first adjusting rod which is rotatably arranged on the first fixing seat 40 along the horizontal direction and a second adjusting rod which is arranged on the first fixing seat 40 along the longitudinal direction, one end of the first adjusting rod is connected with the upper pinch roller I43, the other end of the first adjusting rod is connected with the upper end of the second adjusting rod through an elastic piece in a three-phase manner, the lower end of the second adjusting rod is fixed on the first fixing seat 40, a third elastic piece can be arranged as an extension spring, the position where the first adjusting rod is rotatably connected with the first fixing seat 40 is taken as a fulcrum, and the change of the horizontal height of the upper pinch roller I43 can be adjusted according to the thickness of the lead by utilizing the lever principle and the elasticity of the third elastic piece, the flexibility is stronger.

The wire cutting mechanism comprises an upper moving blade I46 and a lower moving blade I47 which correspond to the wire respectively, a driving mechanism II is arranged on the workbench 1, a connecting frame I48 for fixing the upper moving blade I46 and a connecting frame II 49 for fixing the lower moving blade I47 are arranged at the output end of the driving mechanism II, and the driving mechanism II is used for driving the connecting frame I48 and the connecting frame II 49 to move oppositely to drive the upper moving blade I46 and the lower moving blade I47 to move oppositely to cut the outer end of the previous wire.

In this embodiment, both ends of the wire need to be stripped, so that the wire stripping mechanism at the inner end of the wire is arranged on one side of the wire cutting mechanism facing the wire feeding mechanism, and the distance between the wire cutting mechanism and the wire stripping mechanism at the inner end of the wire is the length of the wire to be stripped. The wire stripping mechanism at the inner end of the wire comprises an upper movable blade II 50 and a lower movable blade II 51 which correspond to the wire respectively, the upper movable blade II 50 is also fixed on the connecting frame I48, the height of the lower end of the upper movable blade II 50 is higher than that of the lower end of the upper movable blade I46, the lower movable blade II 51 is also fixed on the connecting frame II 49, and the height of the upper end of the lower movable blade II 51 is lower than that of the upper end of the upper movable blade I46. By means of the arrangement, the wire cutting of the previous wire and the wire stripping of the next wire are simultaneously carried out, continuous processing is achieved, efficiency is higher, the installation of the driving mechanism on the workbench 1 can be reduced, and space and cost are saved. A first limiting rod 119 used for controlling the distance between the first connecting frame 48 and the second connecting frame 49 is arranged between the first connecting frame 48 and the second connecting frame 49 along the longitudinal direction, one end of the first limiting rod 119 is fixed on the first connecting frame 48, when the first connecting frame 48 and the second connecting frame 49 are driven by a driving mechanism six to do relative motion, the first upper moving blade 46 is in contact with the first lower moving blade 47 to just cut off the outer end of the previous lead, the second upper moving blade 50 and the second lower moving blade 51 are respectively in contact with the outer skin of the lead to just cut off the outer skin of the lead, when the wire stripping of the end part of the inner end of the next lead is realized, the other end of the first limiting rod 119 is in contact with and abutted against the second connecting frame 49, the driving mechanism six stops driving at the moment, the cutting and the peeling of the lead are finished, and the fact that the second upper moving blade 50 and the second lower moving blade 51 only peel the lead is effectively guaranteed, and the lead cannot be cut off.

The wire stripping mechanism at the inner end of the wire further comprises an air blowing pipe 52 corresponding to the lower moving blade II 51, a first recycling drum 53 is arranged below the lower moving blade II 51, the stripped outer skin of the wire can be blown down into the first recycling drum 53, and waste materials are prevented from being accumulated on the workbench 1 to influence processing. A material blocking rod is arranged between the first lower moving blade 47 and the second lower moving blade 51, so that waste materials are prevented from falling into a gap between the first lower moving blade 47 and the second lower moving blade 51, and inconvenience in cleaning is avoided. After the wire cutting and stripping are finished, the wire stripping end of the wire is conveyed into the clamping mechanism I6 through the pressing roller assembly I42, namely the inner end of the wire is positioned in the clamping mechanism I6 to be fixed.

One side of the wire cutting mechanism, which is far away from the wire feeding mechanism, is provided with a first wire positioning mechanism, the first wire positioning mechanism comprises a first upper positioning plate 54 and a first lower positioning plate 55 which correspond to the wires respectively, one side of the first upper positioning plate 54, which faces the wires, is provided with a first groove 56, one side of the first lower positioning plate 55, which faces the wires, is provided with a second groove 57 corresponding to the first groove 56, and the workbench 1 is provided with a seventh driving mechanism for driving the first upper positioning plate 54 and the first lower positioning plate 55 to move relatively. When the first upper positioning plate 54 is in contact with the first lower positioning plate 55, the first groove 56 and the second groove 57 cooperate to form a first positioning hole for the lead to pass through, so that the position of the lead in the first clamping mechanism 6 during feeding of the lead is determined, the precision of subsequent processing is improved, and the lead can be clamped, and the lead can be conveniently cut off.

As shown in fig. 1, 17, 18 and 19, in this embodiment, the structure of the second wire feeding device 19 is the same as that of the first wire feeding device 7, except that the first wire feeding device 7 is placed at a different position on the worktable 1, and the first wire feeding device 7 is arranged along the circumferential direction of the first turntable 5 for conveying, cutting and stripping the inner end of the first wire; and the second wire feeding device 19 is arranged along the circumferential direction of the second rotary table 17 and is used for conveying and cutting a second wire and stripping the inner end of the second wire.

As shown in fig. 1 and 10, the first wire stripping device 8 comprises a second wire stripping mechanism and a second wire positioning mechanism. The workbench 1 is provided with a second fixed seat 58 and an eighth driving mechanism for driving the second fixed seat 58 to horizontally move towards the direction of the lead, the outer end wire stripping mechanism of the lead comprises an upper moving blade III 59 and a lower moving blade III 60 which correspond to the first lead respectively, the second fixed seat 58 is provided with a ninth driving mechanism, and the output end of the ninth driving mechanism is provided with a third connecting frame 62 for fixing the upper moving blade III 59 and a fourth connecting frame 63 for fixing the lower moving blade III 60. And a second limiting rod 120 used for controlling the distance between the third connecting frame 62 and the fourth connecting frame 63 is arranged between the third connecting frame 62 and the fourth connecting frame 63 along the longitudinal direction, one end of the second limiting rod 120 is fixed on the third connecting frame 62, when the driving mechanism nine drives the third connecting frame 62 and the fourth connecting frame 63 to move in opposite directions, the third upper moving blade 59 and the third lower moving blade 60 are respectively contacted with the outer skin of the outer end of the lead, when the outer skin of the end part of the outer end of the lead is just cut, the other end of the second limiting rod 120 is contacted with the fourth connecting frame 63 to be abutted, and at the moment, the driving mechanism nine stops driving. Effectively ensure that the upper moving knife three 59 and the lower moving knife three 60 only peel the first wire without cutting the wire. The driving mechanism eight drives the fixed seat two 58 to drive the upper moving knife three 59 and the lower moving knife three 60 to move in the opposite direction of the lead, so as to take out the cut sheath of the lead and realize the stripping of the outer end of the lead. Move the below of sword three 60 down and be provided with recovery section of thick bamboo two 61, the waste material falls into and collects in recovery section of thick bamboo two 61, avoids the waste material to pile up the waste material on workstation 1, influences processing.

The second wire positioning mechanism comprises a second upper positioning plate 64 and a second lower positioning plate 65 which correspond to the wires respectively, a third groove is formed in one side face, facing the wires, of the second upper positioning plate 64, a fourth groove corresponding to the three phases of the grooves is formed in one side face, facing the wires, of the second lower positioning plate 65, and a tenth driving mechanism used for driving the second upper positioning plate 64 and the second lower positioning plate 65 to move relatively is arranged on the workbench 1. When the upper positioning plate II 64 is contacted with the lower positioning plate II 65, the groove III and the groove IV are matched to form a positioning hole II matched with the lead, on one hand, the clamping and positioning effects on the lead can be achieved, the lead is enabled to correspond to the lead stripping device I8, the stripping is convenient, on the other hand, the damage to the lead caused by excessive extrusion in the clamping process can be avoided.

As shown in fig. 1 and 20, in this embodiment, the structure of the second wire stripping device 20 is the same as that of the first wire stripping device 8, except that the first wire stripping device 8 is placed at a different position on the workbench 1, and the first wire stripping device 8 is arranged along the circumferential direction of the first turntable 5, and is used for stripping the outer end of the first wire; and the second wire stripping device 20 is arranged along the circumferential direction of the second rotating disc 17 and is used for stripping the outer end of the second wire.

As shown in fig. 1 and 11, after the outer end of the first wire is stripped, the first rotary table 5 drives the first clamping mechanism 6 to rotate, and the first wire is conveyed to the first flux feeding device 9. The first soldering flux feeding device 9 comprises a first storage barrel 68 for placing soldering flux and a first sponge 69 for dipping the soldering flux, the first storage barrel 68 is arranged below the first lead or the second lead, the first sponge 69 is arranged in the first storage barrel 68, an eleventh driving mechanism for longitudinal driving is arranged on the workbench 1, and a fifth connecting frame 70 for fixing the first sponge 69 is arranged at the output end of the eleventh driving mechanism. The connecting frame five 70 is driven by the driving mechanism eleven to drive the sponge first 69 to move longitudinally in the material storage cylinder first 68, so that the sponge first 69 is dipped in the soldering flux and then smeared at the wire stripping end of the first lead, and the outer end of the first lead and the PTC ceramic heating element can be welded conveniently. .

As shown in fig. 1, 3, 11, 16 and 21, in this embodiment, the structures of the second flux feeding device 13 and the third flux feeding device 21 are the same as the structure of the first flux feeding device 9, except that the positions of the first flux feeding device and the third flux feeding device are different from each other on the workbench 1, the first flux feeding device 9 is arranged along the circumferential direction of the first turntable 5 and is arranged between the first wire stripping device 8 and the PTC ceramic heating element mounting device 10, so as to achieve the smearing of the flux at the stripping end of the outer end of the first wire, so as to facilitate the subsequent welding between the first wire and the PTC ceramic heating element; the second soldering flux feeding device 13 is arranged along the circumferential direction of the first rotating disc 5, is arranged between the lead shifting device 12 and the lead mounting device 115 and is used for smearing soldering flux at the welding end of the PTC ceramic heating body; and the third soldering flux feeding device 21 is arranged along the circumferential direction of the second rotary table 17, is arranged between the second wire stripping device 20 and the wire mounting device 115, and is used for smearing soldering flux at the outer end stripping end of the second wire. The second soldering flux feeding device 13 and the third soldering flux feeding device 21 are used for facilitating the subsequent welding between the second wire and the PTC ceramic heating element.

As shown in fig. 1, 12 and 13, the first rotary table 5 drives the first clamping mechanism 6 to rotate, so that the first lead with the outer end stripped and coated with the soldering flux is conveyed to the PTC ceramic heating element mounting device 10, and the PTC ceramic heating element is mounted and connected with the outer end of the first lead. The PTC ceramic heating element mounting device 10 comprises a PTC ceramic heating element feeding mechanism, a soldering tin wire feeding mechanism I and a welding mechanism I. The feeding mechanism of the PTC ceramic heating element comprises a vibrating disc 71 used for placing the PTC ceramic heating element and a linear feeder 72 arranged at the discharge port of the vibrating disc 71, one end, facing the vibrating disc 71, of the linear feeder 72 is provided with a fifth inductor 118 corresponding to the PTC ceramic heating element, when the PTC ceramic heating element on the linear feeder 72 is stacked at the fifth inductor 118, the vibrating disc 71 stops feeding, after the PTC ceramic heating element on the linear feeder 72 is sequentially mounted with a first wire and taken away to reduce the quantity, the vibrating disc 71 continues feeding, and the influence on the mounting connection of the PTC ceramic heating element and the first wire due to the stacking of the PTC ceramic heating element can be effectively avoided.

The end part of the linear feeder 72, which faces one end of the first clamping mechanism 6, is provided with a discharging groove 86, one end of the discharging groove 86 is communicated with the linear feeder 72, the PTC ceramic heating element to be connected with the first lead is conveyed to the discharging groove 86 for standby, and the other end of the discharging groove 86 is provided with a baffle 87 to prevent the PTC ceramic heating element from falling. The first clamping jaw 88 and the first driving jaw 88 are arranged above the discharging groove 86 and used for driving the first clamping jaw 88 to clamp the first PTC ceramic heating element, the first driving element can be a finger cylinder I, the first clamping jaw 88 can move in the longitudinal direction or the horizontal direction under the driving of the fourteen driving mechanisms, the first clamping jaw 88 clamps the PTC ceramic heating element at the discharging groove 86 and conveys the PTC ceramic heating element to the position where the PTC ceramic heating element can be contacted with the wire stripping position at the outer end of the first wire, and preparation is made for subsequent welding. Because one end of the discharging groove 86 is communicated with the linear feeder 72, and two adjacent PTC ceramic heating elements are close to each other, in order to prevent the clamping jaw I88 from taking out the adjacent PTC ceramic heating elements when clamping the PTC ceramic heating elements on the discharging groove 86, the linear feeder 72 is provided with a limiting piece 113 which is contacted with the upper surface of the PTC ceramic heating elements, and the distance between the limiting piece 113 and the baffle 87 is the length of one PTC ceramic heating element, so that the PTC ceramic heating elements at the discharging groove 86 are not influenced by the limiting piece 113. The limiting member 113 can limit the PTC ceramic heating elements at the end of the linear feeder 72, which is advantageous for the transportation of the PTC ceramic heating elements.

A third wire positioning mechanism is arranged between the welding mechanism and the first clamping mechanism 6, the third wire positioning mechanism comprises a third upper positioning plate 82 and a third lower positioning plate 83 which correspond to the first wire on the first clamping mechanism 6 respectively, a fifth groove is formed in one side surface, facing the first wire, of the third upper positioning plate 82, a sixth groove corresponding to the fifth groove is formed in one side surface, facing the first wire, of the third lower positioning plate 83, and a thirteen driving mechanism for driving the third upper positioning plate 82 and the third lower positioning plate 83 to move relatively is arranged on the workbench 1. When the third upper positioning plate 82 is in contact with the third lower positioning plate 83, the fifth groove and the sixth groove are matched to form a third positioning block for the first lead to pass through, so that on one hand, the position of the first lead can be determined, the first lead is convenient to contact with the PTC ceramic heating element, and on the other hand, the third positioning block can play a role in clamping the first lead, and subsequent welding is convenient.

The workbench 1 is respectively provided with a first bracket 73 and a second bracket 116, the first solder wire feeding mechanism comprises a first storage hopper 117 which is rotatably arranged on the first bracket 73 and used for storing solder and a second compression roller assembly 74 which is arranged on the second bracket 116 and used for conveying solder wires, and the second compression roller assembly 74 comprises an upper compression roller 75 and a lower compression roller 76 which rotate relatively. And a second servo motor for driving the second lower compression roller 76 to rotate is arranged on the second support 116, and the second lower compression roller 76 rotates to drive the second upper compression roller 75 to rotate, so that the solder wires are conveyed. And a second conveying pipe 77 for the solder wires to pass through is arranged between the first stocker 117 and the second compression roller assembly 74 and between the second compression roller assembly 74 and the first welding mechanism, so that the solder wires can be supported and guided, and the solder wires are prevented from falling on the workbench 1 to influence the processing of other devices.

The first welding mechanism comprises a first heater 78 which is arranged below the first clamping mechanism 6 and corresponds to the first lead, and a first tin containing groove 79 which is arranged at the upper end of the first heater 78, and is used for melting the tin wire and dipping the tin liquid on the pre-welding part of the first lead. A second storage cylinder 80 for placing the soldering flux and a second sponge 81 for dipping the soldering flux are arranged between the first tin containing tank 79 and the linear feeder 72, the second sponge 81 is arranged in the second storage cylinder 80, and a twelfth driving mechanism for driving the second sponge 81 to move in the second storage cylinder 80 along the longitudinal direction is arranged on the workbench 1. The first clamping jaw 88 firstly conveys the clamped PTC ceramic heating element to the upper side of the second storage box 80, the dipped scaling powder is coated on the lower surface of the PTC ceramic heating element through the sponge, then the first clamping jaw 88 conveys the PTC ceramic heating element to the first lead, welding between the first and second lead is realized, and the scaling powder can help and promote the welding process of the lead and the lower surface of the PTC ceramic heating element.

As shown in fig. 1 and 14, since the first wire is welded to the lower surface of the PTC ceramic heating element, and the second wire needs to be welded to the surface corresponding to the first wire, i.e. the upper surface of the PTC ceramic heating element, the PTC ceramic heating element needs to be turned over by 180 degrees, so that the upper surface and the lower surface of the PTC ceramic heating element are switched, so that the second soldering flux feeding device 13 can conveniently coat the soldering flux on the lower surface of the PTC ceramic heating element, i.e. the surface which is not welded with the first wire after turning over, so as to facilitate the subsequent welding between the wire stripping position of the outer end of the second wire and the PTC ceramic heating element. Be provided with fixing base three 89 corresponding with fixture one 6 on the workstation 1, PTC ceramic heat-generating body turning device 11 is including setting up on fixing base three 89 and the clamping jaw two 90 relative with the PTC ceramic heat-generating body, and be used for driving clamping jaw two 90 to carry out the driving piece two of centre gripping to the PTC ceramic heat-generating body, driving piece two can set up to the finger cylinder, the mounting hole that supplies pivot 91 to pass is seted up along the axial direction of first wire on fixing base three 89, the one end of pivot 91 is connected with clamping jaw two 90, the other end of pivot 91 is provided with and is used for driving pivot 91 fifteen towards the actuating mechanism of fixture one 6 direction movements. The fifteen driving rotating shafts 91 drive the two clamping jaws 90 to move towards the PTC ceramic heating element, and the two driving clamping jaws 90 drive the PTC ceramic heating element to be clamped.

Sixteen driving mechanisms used for driving the rotating shaft 91 to rotate are arranged on the third fixing seat 89, a first belt pulley 92 is arranged at the output end of each driving mechanism, a second belt pulley 93 is sleeved on the rotating shaft 91, a belt 94 is arranged between the first belt pulley 92 and the second belt pulley 93, the sixteen driving mechanisms drive the first belt pulley 92 to rotate, and the sixteen driving mechanisms can be set to be servo motors III. Through the transmission of belt 94, pulley two 93 rotates synchronously, realizes that pivot 91 drives the rotation of clamping jaw two 90. In this embodiment, the rotation angle of the rotating shaft 91 is 180 °, and the upper surface and the lower surface of the PTC ceramic heating element are exchanged with each other. The inner wall of the second belt pulley 93 is provided with a groove body along the self axial direction, the groove body is distributed along the circumferential direction of the second belt pulley 93, the rotating shaft 91 is provided with a bulge corresponding to the groove body along the self axial direction, the bulge is distributed along the circumferential direction of the rotating shaft 91, and the rotating shaft 91 can rotate and move horizontally along the axial direction of the mounting hole through the groove body and the bulge.

As shown in fig. 1 and 15, after the above-mentioned processing steps are completed, only a small portion of the inner end of the first wire is held by the first holding mechanism 6, and the outer end portion away from the first holding mechanism 6 is longer, which is not beneficial to the subsequent processing, so that the position of the first wire in the first holding mechanism 6 needs to be adjusted. The workbench 1 is provided with a first fixing seat fourth 95 corresponding to the first clamping mechanism 6, the wire shifting device 12 comprises a third clamping jaw 96 arranged on the fourth fixing seat 95 and corresponding to the PTC ceramic heating element, and a third driving element used for driving the third clamping jaw 96 to clamp the PTC ceramic heating element, the third driving element can be set to be a finger cylinder, and the fourth fixing seat 95 is provided with a seventeenth driving mechanism used for driving the third clamping jaw 96 to move towards the PTC ceramic heating element. Under the drive of the driving mechanism seventeen, the clamping jaw III 96 pushes the clamped first wire to the first clamping mechanism 6, so that the length of the outer end of the first wire exposed out of the first clamping mechanism 6 is shortened, and the subsequent processing is facilitated.

As shown in fig. 1 and 22, the lead mounting device 115 disposed between the first rotary table 5 and the second rotary table 17 includes a fourth lead positioning mechanism, a second solder wire feeding mechanism, and a second soldering mechanism. The fourth wire positioning mechanism comprises a fourth upper positioning plate 97 and a fourth lower positioning plate 98 which are respectively corresponding to the second wire on the second clamping mechanism 18, a seventh groove is formed in one side face, facing the second wire, of the fourth upper positioning plate 97, a eighth groove corresponding to the seventh groove is formed in one side face, facing the second wire, of the fourth lower positioning plate 98, and a eighteen driving mechanism for driving the fourth upper positioning plate 97 and the fourth lower positioning plate 98 to move relatively is arranged on the workbench 1. When the upper positioning plate four 97 contacts with the lower positioning plate 98, the groove seven and the groove eight are matched to form a positioning block four for the second wire to pass through, so that on one hand, the position of the second wire can be determined, the contact between the second wire and the PTC ceramic heating body is facilitated, on the other hand, the clamping effect on the second wire can be achieved, and the subsequent welding is facilitated.

The workbench 1 is respectively provided with a third support 101 and a fourth support 102, the second solder wire feeding mechanism comprises a second storage hopper 103 which is rotatably arranged on the third support 101 and used for storing solder and a third compression roller assembly 104 which is rotatably arranged on the fourth support 102 and used for conveying solder wires, and the third compression roller assembly 104 comprises an upper compression roller 105 and a lower compression roller 106 which rotate relatively. And a servo motor IV for driving the lower pressing roller III 106 to rotate is arranged on the bracket IV 102, and the lower pressing roller III 106 rotates to drive the upper pressing roller III 105 to rotate, so that the conveying of the soldering tin wires is realized. And a third conveying pipe 107 for the solder wires to pass through is arranged between the second stocker 103 and the third compression roller assembly 104 and between the third compression roller assembly 104 and the second welding mechanism, so that the solder wires can be supported and guided, and the solder wires are prevented from falling on the workbench 1 to influence the processing of other devices.

As shown in fig. 1, 3 and 22, the second soldering mechanism includes a second heater 108 disposed between the first rotary table 5 and the second rotary table 17 and disposed below the second wire, and a second tin-containing tank 109 disposed at the upper end of the second heater 108, and melts the solder wire and sticks the tin liquid to the pre-soldering portion of the PTC ceramic heating element to implement soldering. The PTC ceramic heating element is adhered with the soldering flux through the soldering flux feeding device II 13, and the outer end of the second wire is adhered with the soldering flux through the soldering flux feeding device III 21, so that the welding between the PTC ceramic heating element and the second wire is facilitated.

As shown in fig. 1 to 3, the blanking device 14 includes a conveyor belt 110 disposed on the working table 1 and a nineteen driving mechanism for driving the conveyor belt 110 to convey, the nineteen driving mechanism may be a servo motor five, the conveyor belt 110 is disposed below the first rotating disc 5, and the conveyor belt 110 is disposed between the first wire feeding device 7 and the first wire mounting device 115. Finished products after processing and assembly fall onto the conveyor belt 110 for conveying, and subsequent collection and arrangement are facilitated.

As shown in fig. 1 and 23, in order to avoid the installation failure at the wire installation device 115, the second wire is clamped on the clamping mechanism two 18, and the second wire which is not assembled is brought back to the wire feeding device two 19 again under the rotation of the rotary table two 17, so as to affect the processing, a fixed seat five 111 corresponding to the clamping mechanism two 18 is arranged on the working table 1, the wire recovery device 113 comprises a clamping jaw four 112 arranged on the fixed seat five 111 and opposite to the second wire, and a driving member four used for driving the clamping jaw four 112 to clamp the second wire, the driving member four can be set as a finger cylinder, and a driving mechanism twenty used for driving the clamping jaw four 112 to move towards the direction of the second wire is arranged on the fixed seat five 111. Under the driving of the driving mechanism twenty, the clamping jaw four 112 pulls down the clamped second wire for recycling, so that the second wire is ensured not to be arranged on the clamping mechanism two 18 at the wire feeding device two 19, and the processing at the wire processing station two 3 is ensured.

As shown in fig. 1, in the present embodiment, a cam module is disposed below the table 1, and the first driving mechanism, the second driving mechanism, the third driving mechanism, the fourth driving mechanism, the fifth driving mechanism, the sixth driving mechanism, the seventh driving mechanism, the eighth driving mechanism, the ninth driving mechanism, the tenth driving mechanism, the eleventh driving mechanism, the twelfth driving mechanism, the thirteenth driving mechanism, the fourteenth driving mechanism, the fifteenth driving mechanism, the seventeenth driving mechanism, the eighteen driving mechanism and the twenty driving mechanism are respectively connected to the cam module, so as to realize driving and realize reasonable layout of space. Alternatively, a servo motor or an air cylinder may be used as the drive mechanism.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and it will be apparent to those skilled in the art that several modifications and improvements may be made without departing from the present invention, and these should be construed as falling within the scope of the present invention.

Claims

The automatic welding machine for the PTC ceramic heating element comprises a workbench (1) and is characterized in that a first lead machining station (2) and a second lead machining station (3) are respectively arranged on the workbench (1), a first lead and PTC ceramic heating element connecting station (4) is arranged between the first lead machining station (2) and the second lead machining station (3), a first rotary table (5) and a first driving mechanism for driving the first rotary table (5) to rotate are arranged on the first lead machining station (2), a first clamping mechanism (6) for clamping a first lead is arranged on the outer edge of the first rotary table (5) along the circumferential direction, and a first lead feeding device (7), a first lead wire stripping device (8) and a first scaling powder feeding device (9) are sequentially arranged on the workbench (1) along the rotating direction of the first rotary table (5), The wire stripping device comprises a PTC ceramic heating element mounting device (10), a PTC ceramic heating element turnover device (11), a wire shifting device (12), a scaling powder feeding device II (13) and a blanking device (14), wherein a first inductor (15) is arranged between a first wire feeding device (7) and a first wire stripping device (8), a second inductor (16) is arranged between the PTC ceramic heating element mounting device (10) and the PTC ceramic heating element turnover device (11), a second rotary table (17) and a second driving mechanism for driving the second rotary table (17) to rotate are arranged on a second wire processing station (3), a second clamping mechanism (18) for clamping a second wire is arranged on the outer edge of the second rotary table (17) along the circumferential direction of the second rotary table (17), and a second wire feeding device (19) are sequentially arranged on the workbench (1) along the rotation direction of the second rotary table (17), The soldering flux machine comprises a second lead wire stripping device (20), a third soldering flux feeding device (21) and a fourth lead wire recovery device (113), wherein a third inductor (114) is arranged between the second lead wire stripping device (20) and the second lead wire feeding device (19), a fourth inductor (22) is arranged between the fourth lead wire installation device (115) and the fourth lead wire recovery device (113), and a lead wire installation device (115) is arranged on a lead wire and PTC ceramic heating element connection station (4).
2. The automatic welding machine for the PTC ceramic heating element according to claim 1, wherein the first clamping mechanism (6) comprises a first mounting block (23) which is sequentially arranged at the outer edge of the first rotating disk (5) along the circumferential direction, a first clamp (24) and a second clamp (25) which are oppositely arranged and are respectively hinged with the first mounting block (23), the lower end of the first clamp (24) is provided with a first clamping part (26), the first clamping part (26) inclines towards the second clamp (25), the lower end of the second clamp (25) is provided with a second clamping part (27), the second clamping part (27) inclines towards the first clamp (24), the upper end of the first clamp (24) is provided with a first connecting part (28), the upper end of the second clamp (25) is provided with a second connecting part (29), and a first elastic part (30) is arranged between the first connecting part (28) and the second connecting part (29), the wire feeding device I (7), the PTC ceramic heating body overturning device (11), the wire shifting device (12) and the wire discharging device (14) are respectively provided with a control device I (31) for controlling the opening and closing of the clamping mechanism I (6), the control device I (31) comprises a driving mechanism III which is arranged on the workbench (1) and a pressing rod I (32) which is arranged at the three output ends of the driving mechanism along the longitudinal direction, and the lower end of the pressing rod I (32) corresponds to the elastic piece I (30).
3. The automatic welding machine for the PTC ceramic heating element according to claim 2, wherein the second clamping mechanism (18) comprises a third clamp (33) and a fourth clamp (34), the third clamp (33) and the fourth clamp (34) are sequentially arranged on the upper surface of the second rotary table (17) along the circumferential direction, through holes for the clamping rods (35) to pass through are formed in the second rotary table (17) along the axial direction, the through holes are sequentially distributed along the circumferential direction of the second rotary table (17) and correspond to the fourth clamp (34), the upper ends of the clamping rods (35) are connected with the fourth clamp (34), fastening pieces (36) are sleeved at the lower ends of the clamping rods (35), elastic pieces second (37) are arranged between the fastening pieces (36) and the lower surface of the second rotary table (17), and the guide wire feeding device second (19), the guide wire mounting device (115) and the guide wire recovery device (113) are respectively provided with a second clamping mechanism (33), (34) and (113) for controlling the second clamping mechanism 18) And the second control device (38) is opened and closed, the second control device (38) comprises a driving mechanism IV which is arranged below the second rotary table (17) and is used for performing longitudinal driving, and a second pressing rod (39) which is arranged at the output end of the driving mechanism IV along the longitudinal direction, and the upper end of the second pressing rod (39) corresponds to the lower end part of the clamping rod (35).
4. The automatic welding machine for the PTC ceramic heating body according to claim 2, wherein the first lead feeding device (7) comprises a lead feeding mechanism and a lead cutting mechanism, the workbench (1) is provided with a first fixing seat (40) and a fifth driving mechanism for driving the first fixing seat (40) to horizontally move along the lead conveying direction, the lead feeding mechanism comprises a tension wheel assembly (41) and a first pinch roller assembly (42) which are arranged on the first fixing seat (40), the first pinch roller assembly (42) is arranged between the tension wheel assembly (41) and the lead cutting mechanism, the first pinch roller assembly (42) comprises a first upper pinch roller (43) and a first lower pinch roller (44) which rotate relatively, and a first conveying pipe (45) for the lead to pass through is arranged between the first pinch roller assembly (42) and the tension wheel assembly (41) and between the first pinch roller assembly (42) and the lead cutting mechanism, the wire cutting mechanism comprises an upper moving blade I (46) and a lower moving blade I (47) which correspond to wires respectively, a driving mechanism six is arranged on the workbench (1), a first connecting frame (48) used for fixing the upper moving blade I (46) and a second connecting frame (49) used for fixing the lower moving blade I (47) are arranged at the output end of the driving mechanism six, and the driving mechanism six is used for driving the first connecting frame (48) and the second connecting frame (49) to move oppositely.
5. The automatic welding machine for the PTC ceramic heating element according to claim 4, characterized in that one side of the lead cutting mechanism facing the lead feeding mechanism is provided with a lead inner end wire stripping mechanism, the lead inner end wire stripping mechanism comprises an upper moving blade II (50) and a lower moving blade II (51) which are respectively corresponding to the lead, the upper moving blade II (50) is also fixed on the connecting frame I (48), the lower end of the upper moving blade II (50) is higher than the lower end of the upper moving blade I (46), the lower moving blade II (51) is also fixed on the connecting frame II (49), the upper end of the lower moving blade II (51) is lower than the upper end of the upper moving blade I (46), the lead inner end wire stripping mechanism further comprises a blowing pipe (52) corresponding to the lower moving blade II (51), and a recovery barrel I (53) is arranged below the lower moving blade II (51), one side, far away from the wire feeding mechanism, of the wire cutting mechanism is provided with a first wire positioning mechanism, the first wire positioning mechanism comprises a first upper positioning plate (54) and a first lower positioning plate (55) which correspond to the wires respectively, a first groove (56) is formed in one side, facing the wires, of the first upper positioning plate (54), a second groove (57) corresponding to the first groove (56) is formed in one side, facing the wires, of the first lower positioning plate (55), and a seventh driving mechanism used for driving the first upper positioning plate (54) and the first lower positioning plate (55) to move relatively is arranged on the workbench (1).
6. The automatic welding machine for the PTC ceramic heating element according to claim 2, characterized in that the first lead wire stripping device (8) comprises a second lead wire outer end stripping mechanism and a second lead wire positioning mechanism, the workbench (1) is provided with a second fixed seat (58) and an eighth driving mechanism for driving the second fixed seat (58) to horizontally move towards the lead wire direction, the second lead wire outer end stripping mechanism comprises a third upper moving blade (59) and a third lower moving blade (60) which respectively correspond to the lead wire, a second recovery cylinder (61) is arranged below the third lower moving blade (60), the second fixed seat (58) is provided with a ninth driving mechanism, the output end of the ninth driving mechanism is provided with a third connecting frame (62) for fixing the third upper moving blade (59) and a fourth connecting frame (63) for fixing the third lower moving blade (60), and the ninth driving mechanism is used for driving the third connecting frame (62) and the fourth connecting frame (63) to move oppositely, the wire positioning mechanism II comprises an upper positioning plate II (64) and a lower positioning plate II (65) which correspond to the wires respectively, a groove III is formed in one side face, facing the wires, of the upper positioning plate II (64), a groove IV corresponding to the groove three phase is formed in one side face, facing the wires, of the lower positioning plate II (65), and a driving mechanism ten used for driving the upper positioning plate II (64) and the lower positioning plate II (65) to move relatively is arranged on the workbench (1).
7. The automatic welding machine for the PTC ceramic heating element according to claim 2, wherein the first soldering flux feeding device (9) comprises a first storage barrel (68) for placing soldering flux and a first sponge (69) for dipping the soldering flux, the first storage barrel (68) is arranged below the lead, the first sponge (69) is arranged in the first storage barrel (68), an eleventh driving mechanism for longitudinal driving is arranged on the workbench (1), and a fifth connecting frame (70) for fixing the first sponge (69) is arranged at an output end of the eleventh driving mechanism.
8. A PTC ceramic heating element automatic welding machine according to claim 2, characterized in that the PTC ceramic heating element mounting device (10) comprises a PTC ceramic heating element feeding mechanism, a first soldering wire feeding mechanism and a first welding mechanism, the PTC ceramic heating element feeding mechanism comprises a vibration disc (71) for placing the PTC ceramic heating element and a linear feeder (72) arranged at a discharge port of the vibration disc (71), one end of the linear feeder (72) facing the vibration disc (71) is provided with a fifth inductor (118) corresponding to the PTC ceramic heating element, a first bracket (73) and a second bracket (116) are respectively arranged on the workbench (1), the first soldering wire feeding mechanism comprises a first hopper (117) rotatably arranged on the first bracket (73) for storing soldering tin and a second pressing roller assembly (74) arranged on the second bracket (116) for conveying the soldering tin, the second pinch roller assembly (74) comprises an upper pinch roller (75) and a lower pinch roller (76) which rotate relatively, a second delivery pipe (77) for passing the solder wires is arranged between the first stocker (117) and the second pinch roller assembly (74) and between the second pinch roller assembly (74) and the first welding mechanism, the first welding mechanism comprises a first heater (78) which is arranged below the first clamping mechanism (6) and corresponds to the lead, and a tin containing groove I (79) arranged at the upper end of the heater I (78), a second material storage cylinder (80) for placing the soldering flux and a second sponge (81) for dipping the soldering flux are arranged between the first tin containing tank (79) and the linear feeder (72), and a driving mechanism twelve for driving the second sponge (81) to move in the second storage barrel (80) along the longitudinal direction is arranged on the workbench (1).
9. The automatic welding machine for the PTC ceramic heating elements according to claim 8, characterized in that a third wire positioning mechanism is arranged between the welding mechanism and the first clamping mechanism (6), the third wire positioning mechanism comprises a third upper positioning plate (82) and a third lower positioning plate (83) which are respectively corresponding to the wires on the first clamping mechanism (6), a fifth groove is formed in one side surface of the third upper positioning plate (82) facing the wires, a sixth groove corresponding to the fifth groove is formed in one side surface of the third lower positioning plate (83) facing the wires, a thirteen driving mechanism for driving the third upper positioning plate (82) and the third lower positioning plate (83) to move relatively is arranged on the workbench (1), a discharging groove (86) is arranged at the end part of one end of the linear feeder (72) facing the first clamping mechanism (6), and one end of the discharging groove (86) is communicated with the linear feeder (72), the other end of blowing groove (86) is provided with baffle (87), be provided with on linear feeder (72) locating part (113) that contacts with PTC ceramic heat-generating body upper surface, just locating part (113) with distance between baffle (87) is the length of a PTC ceramic heat-generating body, the top of blowing groove (86) is provided with clamping jaw (88) and is used for the drive clamping jaw (88) carry out centre gripping driving piece one to the PTC ceramic heat-generating body, clamping jaw (88) can be along vertical or the horizontal direction motion under actuating mechanism fourteen drive.
10. The automatic welding machine for the PTC ceramic heating element according to claim 2, wherein a third fixing seat (89) corresponding to the first clamping mechanism (6) is arranged on the working table (1), the turnover device (11) for the PTC ceramic heating element comprises a second clamping jaw (90) which is arranged on the third fixing seat (89) and is opposite to the PTC ceramic heating element, and a second driving element for driving the second clamping jaw (90) to clamp the PTC ceramic heating element, a mounting hole for a rotating shaft (91) to pass through is formed in the third fixing seat (89) along the axial direction of a lead, one end of the rotating shaft (91) is connected with the second clamping jaw (90), a fifteen driving mechanism for driving the rotating shaft (91) to move towards the first clamping mechanism (6) is arranged at the other end of the rotating shaft (91), a sixteen driving mechanism for driving the rotating shaft (91) to rotate is arranged on the third fixing seat (89), sixteen output of actuating mechanism is provided with belt pulley (92), the cover is equipped with belt pulley two (93) on pivot (91), belt pulley (92) with be provided with belt (94) between belt pulley two (93), the cell body has been seted up along self axial direction to the inner wall of belt pulley two (93), just the cell body distributes along the circumference direction of belt pulley two (93), pivot (91) go up along self axial direction seted up with the corresponding arch of cell body, just the circumference direction distribution of pivot (91) is followed to the arch.
11. The automatic welding machine for the PTC ceramic heating element according to claim 2, wherein a fourth fixing seat (95) corresponding to the first clamping mechanism (6) is arranged on the working table (1), the wire shifting device (12) comprises a third clamping jaw (96) which is arranged on the fourth fixing seat (95) and corresponds to the PTC ceramic heating element, and a third driving element for driving the third clamping jaw (96) to clamp the PTC ceramic heating element, and a seventeenth driving mechanism for driving the third clamping jaw (96) to move towards the PTC ceramic heating element is arranged on the fourth fixing seat (95).
12. The automatic welding machine for the PTC ceramic heating element according to claim 3, wherein the wire mounting device (115) comprises a wire positioning mechanism IV, a solder wire feeding mechanism II and a welding mechanism II, the wire positioning mechanism IV comprises an upper positioning plate IV (97) and a lower positioning plate IV (98) which are respectively corresponding to the wires on the clamping mechanism II (18), a groove VII is formed in one side surface of the upper positioning plate IV (97) facing the wires, a groove VIII corresponding to the groove VII is formed in one side surface of the lower positioning plate IV (98) facing the wires, a driving mechanism eighteen for driving the upper positioning plate IV (97) and the lower positioning plate IV (98) to move relatively is arranged on the workbench (1), a support III (101) and a support IV (102) are respectively arranged on the workbench (1), the solder wire feeding mechanism II comprises a storage device II (103) which is rotatably arranged on the support III (101) and is used for storing solder wires ) And a third pressing roller assembly (104) which is rotatably arranged on the fourth bracket (102) and is used for conveying solder wires, wherein the third pressing roller assembly (104) comprises an upper pressing roller assembly (105) and a lower pressing roller assembly (106) which rotate relatively, a third conveying pipe (107) for the solder wires to pass through is arranged between the second stocker (103) and the third pressing roller assembly (104) and between the third pressing roller assembly (104) and the second welding mechanism, and the second welding mechanism comprises a second heater (108) which is arranged between the first rotary table (5) and the second rotary table (17) and is arranged below a lead, and a second solder containing groove (109) which is arranged at the upper end of the second heater (108).
13. The automatic welding machine for the PTC ceramic heating element according to claim 2, characterized in that the blanking device (14) comprises a conveyor belt (110) arranged on the workbench (1) and a nineteen driving mechanism for driving the conveyor belt (110) to convey, the conveyor belt (110) is arranged below the first rotating disc (5), and the conveyor belt (110) is arranged between the first wire feeding device (7) and the wire mounting device (115).
14. The automatic welding machine for the PTC ceramic heating element according to claim 3, wherein a fixing seat fifth (111) corresponding to the clamping mechanism second (18) is arranged on the working table (1), the lead wire recovery device (113) comprises a clamping jaw fourth (112) arranged on the fixing seat fifth (111) and opposite to the lead wire, and a driving piece fourth used for driving the clamping jaw fourth (112) to clamp the lead wire, and a driving mechanism twenty used for driving the clamping jaw fourth (112) to move towards the lead wire direction is arranged on the fixing seat fifth (111).