CN107470735B

CN107470735B - Manual wire feeding device of welding gun

Info

Publication number: CN107470735B
Application number: CN201710849253.XA
Authority: CN
Inventors: 刘海萍; 费建明; 李耀宗; 毛文来; 姚耀; 何健; 程江; 徐威; 凌娟子; 赵淑芳
Original assignee: Ningbo Zhongdi Industry & Trade Co ltd
Current assignee: Ningbo Zhongdi Industry & Trade Co ltd
Priority date: 2017-09-20
Filing date: 2017-09-20
Publication date: 2023-02-14
Anticipated expiration: 2037-09-20
Also published as: CN107470735A

Abstract

A manual wire feeder of a welding gun is formed by matching a gear in a switch assembly with a second spring with a pulley in a pulley assembly, and matching the gear with a pawl and a brake pawl; the edge of the inner end face of the push switch extends out to be raised and is vertical to two side faces of the outer end face, and an open slot formed by the two side faces is matched with a sliding open slot on the pulley component; the sleeve assembly is composed of a plurality of sections of pipes, comprises a tin wire inlet pipe and a tin wire pipe which enters the tin wire inlet pipe through a pulley assembly, different materials and different processing methods are selected according to working characteristics for manufacturing the sleeve assembly, the gears and the pulleys have high processing precision and high smoothness, the rotation is convenient, the resistance is reduced, and the tin wire is protected from being damaged. The push switch is added, so that the tin wire can be conveniently drawn out of the pulley and is not damaged. The gear can only rotate in a single direction by the pawl and the brake claw, the size and the speed of the tin wire amount at any time are guaranteed to be unchanged, the stability is good, waste products or incapability of working caused by tin discharge delay due to wire feeding disorder can be avoided, the gear is particularly suitable for welding important parts and precision instruments, and the practicability is high.

Description

Manual wire feeding device of welding gun

Technical Field

The invention relates to an auxiliary mechanism on an electric soldering iron, in particular to a manual wire feeding device of a welding gun.

Background

The patent No. 200720088783.9 'manual tin-out gun with tin rack', provides a manual tin-out gun which directly assembles tin wires on a welding gun body, presses a button, and the tin wires are continuously used by a welding head, and is extremely convenient to use.

Patent No. 201020121270.5 "an automatic send a electric welding gun" discloses the tin wire sleeve pipe of setting in tin wire coil former one side, drives the gear mechanism that the tin wire moved forward, and gear mechanism is connected with the trigger, has an opening on the tin wire sleeve pipe, and the gear setting among the gear mechanism is at this opening part, by the gear limit with the tin wire top on tin wire sleeve pipe's inside wall, drive gear revolve through detaining the trigger, promote the tin wire and move forward. The mechanism has the great defects that the mechanism has no positioning and adjusting effect on the gear, can not ensure that the wire feeding can be accurate and error, and the welding requirement can be met in a certain consistent way, so that the mechanism is unstable in work, only suitable for pushing the tin wire with a certain diameter specification which is matched with the gear well, cannot be used for welding precision equipment with higher requirement, and is large in limitation and poor in practicability.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the manual wire feeding device for the welding gun can ensure that a welding wire can be accurately and consistently fed out of a tin wire tube, meets the welding requirements of high requirements and precision parts, is wide in application range, is convenient to pass in and out of the tin wire, is not easy to damage, and is high in practicability.

The technical scheme adopted by the invention for solving the problems is as follows: the manual wire feeder of the welding gun comprises a switch shell with a gear, a wire feeder, a tin wire sleeve and a push switch, wherein the wire feeder is formed by matching the gear arranged in a switch component with a second spring with a pulley arranged in a pulley component, and matching the gear with a pawl and a braking pawl; the edge of the inner end face of the push switch extends out to be raised and is vertical to two side faces of the outer end face, and an open slot formed by the two side faces is matched with a sliding open slot on the pulley assembly; the tin wire sleeve is a sleeve assembly and is composed of a plurality of sections of tubes, and comprises a tin wire inlet tube and a tin wire tube which enters the tin wire inlet tube through a pulley assembly.

Compared with the prior art, the invention has the advantages that: the sleeve assembly of the device consists of a plurality of sections of pipe fittings and pulley assemblies, different materials and different processing methods are selected according to the working characteristics to manufacture the sleeve assembly, the gears and the pulleys have high processing precision and high finish degree, the sleeve assembly is convenient to rotate, the tin wire is easy to pass and be drawn out, the resistance is reduced, the working stability is ensured, and the tin wire is protected from being damaged. The push switch is added, the drawing function of the tin wire is increased, the pulley can be separated from the gear only by pressing the push switch, and the tin wire can be conveniently drawn out of the pulley without being damaged. The most main switch module that is, gear on it contacts and promotes the tin silk and move along with the tin silk in the pulley, and the gear is adjusted by pawl, locking pawl control moreover, and the gear can only the unidirectional rotation, guarantees that the size and the speed of the tin silk volume of going out at arbitrary time are unchangeable, and its stability is good, can not delay and chaotic tin play and cause the waste product or can't work, especially suitable important part and precision instrument's welding, and welding speed is fast, and the qualitative effect is good, and the practicality is strong.

Drawings

Fig. 1, a reference drawing (installed in a housing) of the present invention in use.

Fig. 2 is a reference diagram of the using state of the invention (the upper gun shell is taken off, and the switch shell is half-sectioned).

FIG. 3 is a schematic view of a working flow of feeding tin wire.

Fig. 4 is a schematic view of the push switch structure.

Fig. 5 is a schematic view of a pulley frame structure.

Detailed Description

Embodiments of the present invention are further described below with reference to the accompanying drawings.

The shell 3 is a whole formed by connecting an upper gun shell and a lower gun shell, a heating part and a wire wheel part with tin are all in the prior art.

The control pawl 19: two sides of the shaft head are provided with a ratchet arm with a ratchet 23 and a lower arm connected with one end of a fourth spring 20.

A switch assembly: the gear 18 is arranged in through holes on two side walls of the upper end of the switch shell 4 by a pin shaft 17, the brake pawl 19 is arranged in through holes on two side walls of the lower end of the switch shell 4 by shaft heads on two sides, a ratchet 23 at the top end of a ratchet arm of the brake pawl 19 is meshed with the gear 18, the lower arm of the brake pawl 19 is connected with one end of a fourth spring 19, the other end of the fourth spring is propped against the inner wall of the switch shell 4, and a fixed hook 41 connected with the second spring 15 is arranged at the edge of the upper end of the switch shell 4. The gear and the brake pawl rotate in the switch shell 4.

The pulley assembly comprises: a pulley 14 is connected into a sliding opening groove 131 on a pulley frame 13 with a through hole through a pin shaft 17, the pulley rotates in the sliding opening groove 131, the edge of a gear 18 is inserted into the edge of the pulley 14, a first spring 12 is further mounted at a mounting hole 132 of the pulley frame 13 to form the structure, and the pin shaft 17 on the pulley assembly is the same as the pin shaft 17 on the switch assembly.

The mounting hole 132 on the pulley yoke 13 and the first spring 12 are sleeved on the mounting post of the inner wall of the lower half shell of the casing 3, i.e. the pulley assembly is mounted at the upper end of the inner wall of the lower half shell, one end of the first spring 12 is tightly attached to the pulley yoke 13, and the other end is tightly attached to the inner edge of the lower half shell of the casing 3.

A sleeve assembly: the tin wire tube is composed of a plurality of sections of tubes, and comprises a tin wire inlet tube 11 which enters the tin wire tube 5 through a pulley component, and two ends of the tin wire tube 5 are sleeved with a fixed protection tube 16 and a ceramic tube 7 for protection and high temperature resistance. Wherein tin silk admission pipe 11 is the ladder cylinder pipe, extends the horizontal and straight crossing spacer 111 in the periphery of main aspects, and spacer 111 and the cooperation of the spacer on 3 inner walls of casing guarantee that the fixed position of tin silk admission pipe in the casing can not remove to guarantee that 24 entering states of tin silk are stable, tin silk can not take place to buckle wrinkle, rupture phenomenon.

The push switch 10: the outer end surface is provided with knurls for increasing friction and facilitating operation, the edge of the corresponding inner end surface extends out to be raised and vertical to two side surfaces of the outer end surface, an open slot 101 formed by the two side surfaces is matched with a sliding open slot 131 on the pulley frame, and the two side edges extend out to form limiting pieces 102.

The push switch 10 is horizontally embedded in an embedded groove at one edge of the shell, the limiting sheet 102 on the push switch is inserted into the embedded groove for limiting, finally, one end of the tin wire inlet pipe 11 is embedded in an arc-shaped groove on the inner wall of the shell 3, and the other end of the tin wire inlet pipe passes through the open groove 101 on the push switch 10 and enters the sliding opening groove 131 on the pulley component.

The pawl 22: the middle of the shell is cylindrical with a through hole, the periphery of the middle of the shell extends out of an upper arm with a ratchet 23 and a connecting arm, a pawl 22 is fixed on a connecting column on the inner wall of the lower half gun shell of the shell 3 through a through hole on the pawl by a screw, one end of a pin shaft 17 for a switch component is inserted into the other connecting column on the inner wall of the lower half gun shell of the shell, one end of a third spring 21 is sleeved on the connecting arm of the pawl 22, the other end of the third spring is fixed on a rib 31 on the inner wall of the lower half gun shell of the shell 3, the ratchet 23 at the top end of the upper arm is meshed with a gear 18, and the pawl is the same as the ratchet 23 at the top end of a control pawl.

The end of the porcelain tube 7 on the sleeve assembly is put into the through hole of the connecting piece 8 at the lower end of the radiating tube 6. The end of the protective tube 16 is embedded into the mounting groove at the edge of the shell 3, so that the protective tube cannot move, and the integrity and the damage of the tin wire are ensured.

The wire wheel 1 is arranged on a bracket which is fixed on the upper end of one side of the shell 3 by a screw 2.

The tin wire 24 on the wire wheel 1 firstly enters the tin wire inlet pipe 11, one end of the tin wire inlet pipe is inserted into the opening groove 101 on the push switch and then passes through the sliding opening groove 131 on the pulley frame 13 to the pulley 14, the gear 18 in the switch assembly is inserted into the edge of the pulley, the tin wire 24 is installed in the pulley between the inner diameter of the pulley and the outer diameter of the gear, then enters the tin wire pipe 5 through the end of the sheath 16, and finally extends out of the end of the porcelain pipe 7, as shown in fig. 3.

When the welding gun works, the sliding switch 9 on the lower part of the outer edge of the movable shell 3 is connected with a power supply, the welding gun generates heat, meanwhile, the switch shell 4 is pulled inwards by one hand, the switch shell 4 drives the gear 18 connected with the switch shell into a whole to rotate clockwise, the pawl 22 controls the gear 18 to rotate only in one direction and control the rotating speed of the gear, the gear 18 rotates and pushes the tin wires contacted in the pulley 14 to move forwards, and the tin wires continuously extend out of the porcelain tube 7 for welding.

When the switch shell 4 is pulled into the shell 3 to the bottom and is not moved, the switch component is restored to the original position by releasing the rebounding action of the second spring 15, and meanwhile, the limiting claw 19 rotates along the anticlockwise direction opposite to the rotating direction of the gear 18 under the action of the fourth spring 20, so that the switch component is restored to the original position. In the process, the gear is always in a static state and is controlled and blocked by the ratchet 23 on the pawl 22, at the moment, the tin wire is not driven, and is in a stop working state, only the limiting pawl 19 works to rotate along the gear, and the switch shell 4 is pushed back to the original position, as shown in fig. 2.

If the welding is needed to be continued, the switch shell 4 is continuously pressed to repeat the working procedure.

If the residual tin wire needs to be drawn out of the sleeve assembly for convenient storage, at this time, the push switch 10 above the shell is pressed towards the inner direction of the shell 3, two side surfaces of the opening groove of the push switch support and push the pulley frame to slide two side surfaces of the opening groove, so that the pulley frame 13 rotates upwards for an angle along the pin shaft 17 on the pulley in the anticlockwise direction, the pulley is separated from contact with the gear, at this time, the tin wire in the pulley is not blocked by the gear, the tin wire can be smoothly drawn out from the tin wire inlet pipe 11, the pulley 14 and the sleeve assembly rapidly, then the push switch 10 is loosened, under the action of the first spring 12, the pulley 14 rotates downwards for an angle along with the pulley frame in the clockwise direction to contact with the gear again, and the outer end surface of the push switch 10 is pushed out of the shell 3 to be recovered to the original position.

Claims

1. A manual wire feeder of a welding gun comprises a switch shell with a gear, a wire feeder and a tin wire sleeve, and is characterized by also comprising a push switch (10), wherein the wire feeder is formed by matching a gear (18) arranged in a switch assembly with a second spring (15) with a pulley (14) arranged in a pulley assembly, and matching the gear (18) with a pawl (22) and a brake pawl (19); the edge of the inner end face of the push switch (10) extends out to be raised and is vertical to two side faces of the outer end face, and an open slot (101) formed by the two side faces is matched with a sliding open slot (131) on the pulley assembly; the tin wire sleeve is a sleeve assembly, is composed of a plurality of sections of tubes, and comprises a tin wire inlet tube (11) and a tin wire tube (5) which enters the tin wire sleeve through a pulley assembly; the pulley assembly is as follows: a pulley (14) is connected in a sliding opening groove (131) on a pulley frame (13) with a through hole through a pin shaft (17), the pulley rotates in the sliding opening groove, the edge of a gear (18) is inserted into the edge of the pulley (14), a first spring (12) is further installed at an installation hole (132) of the pulley frame (13) to form the structure, and the pin shaft (17) on a pulley assembly is the same as the pin shaft on a switch assembly; the mounting hole (132) on the pulley yoke (13) and the first spring (12) are sleeved on the mounting column of the inner wall of the lower half gun shell of the shell (3), one end of the first spring (12) is tightly attached to the pulley yoke (13), and the other end of the first spring is tightly attached to the inner edge of the lower half gun shell of the shell (3).

2. The manual welding torch wire feeder of claim 1, wherein the switch assembly: the gear (18) is arranged in through holes on two side walls of the upper end of the switch shell (4) through a pin shaft (17), the brake pawl (19) is arranged in the through holes on two side walls of the lower end of the switch shell (4) through shaft heads on two sides, a ratchet (23) at the top end of a ratchet arm of the brake pawl (19) is meshed with the gear (18), a lower arm of the brake pawl (19) is connected with one end of a fourth spring (20), the other end of the fourth spring is propped against the inner wall of the switch shell (4), and a fixed hook (41) connected with a second spring (15) is arranged on the edge of the upper end of the switch shell (4).

3. The manual welding wire feeder according to claim 1, wherein a fixed protective tube (16) and a porcelain tube (7) are sleeved at two ends of the tin wire tube (5).

4. The manual welding gun wire feeder according to claim 1, wherein the pawl (22) is cylindrical with a through hole in the middle, the upper arm and the connecting arm with the ratchet (23) extend out from the periphery, the pawl (22) is fixed on the connecting column on the inner wall of the lower gun shell of the shell (3) through the through hole by a screw, the switch component is inserted into the other connecting column on the inner wall of the lower gun shell of the shell by one end of a pin shaft (17), one end of a third spring (21) is sleeved on the connecting arm of the pawl (22), the other end of the third spring is fixed on a rib (31) on the inner wall of the lower gun shell of the shell (3), the ratchet (23) at the top end of the upper arm is meshed with the gear (18), and the pawl is identical to the ratchet (23) at the top end of the control pawl.

5. The torch manual wire feeder according to claim 1, characterized in that said locking pawl (19): two sides of the switch shell are provided with shaft heads, ratchet arms with ratchets (23) and lower arms connected with one end of a fourth spring (20) are arranged above and below the shaft heads, and the other end of the fourth spring (20) is propped against the inner wall of the switch shell (4).