CN200942452Y

CN200942452Y - Stud welding gun

Info

Publication number: CN200942452Y
Application number: CN 200620075253
Authority: CN
Inventors: 肖吉武
Original assignee: CHANGZHOU GOLDEN GLOBE WELDING AND CUTTING EQUIPMENT Co Ltd
Current assignee: CHANGZHOU GOLDEN GLOBE WELDING AND CUTTING EQUIPMENT Co Ltd
Priority date: 2006-07-18
Filing date: 2006-07-18
Publication date: 2007-09-05
Anticipated expiration: 2016-07-18

Abstract

The utility model discloses a welding apparatus stud welding torch, including a gun shell, an outrigger, a stud cartridge, a main axle, a bench insulator, a spring, an adjusting mechanism, an electric cable and a switching arrangement. The front end of the gun shell is set with the outrigger attire, the front end of the main axle is set with the stud cartridge attire, the rear end of the main axle is against with the gun shell bench insulator, the two sides of the spring is separately against with the bench insulator and the adjusting mechanism, the main axle and the electric cable electric interlock mutually, a straight line bearing is set in the gun shell, the straight line bearing is set on the main axle and is matched with the main axle body of a glide coordination. The main axle of the utility model reciprocal motion is steady and smooth, Is not easy to be shaken, overheard or blocked, therefore, the welding stud is not crooked; the utility model reduces the faulty soldered joint flaw, the welding quality is good, and is durable and reliable, the service life is prolonged.

Description

Stud welding gun

Technical field

The utility model relates to a kind of welding equipment, the stud welding gun of especially relevant capacitance energy storage.

Background technology

Stud welding gun is widely used in industries such as automobile, shipbuilding, locomotive, aviation, machinery, boiler, chemical industry equipment, transformer and heavy construction structure.The arc heat that stud welding gun utilizes the electric capacity repid discharge to produce fuses the double-screw bolt apiculus fast, is also produced local melting by the weldering metal works simultaneously, and double-screw bolt is pressed in the workpiece molten bath, and arc extinguishing is finished welding then, and whole process is general only to need 2～3 milliseconds.The practical operation method is: in the chuck of earlier double-screw bolt being packed into, rifle upside down, allow all contact workpieces of three support bars, firmly press stud welding gun then, allow and start the arc welding gun switch device behind the vertical contact workpiece of double-screw bolt, energy stored moment is discharged by end bosses, after projection fusing vaporization produces electric arc, double-screw bolt moves downward under the effect of stud welding gun medi-spring pressure, and arc heat makes double-screw bolt flange end and surface of the work form very thin melting zone, and double-screw bolt continues to move downward, double-screw bolt inserts the molten bath, arc extinction, double-screw bolt flange end and workpiece form joint under pressure, and welding finishes.Therefore, the work characteristics of stud welding gun is pressure to be arranged, time weak point, frequency height, perpendicular positioning.This just proposes very high requirement to stud welding gun: less trouble, accurate, durable, action good reproducibility.The main shaft of existing stud welding gun outside puts a fixing copper band, and the gap is big between main shaft and the copper band, and the copper material bad mechanical property, and wearing and tearing easily cause easily that spindle reciprocating motion shakes, steady phenomenon; Careless slightly or have welding slag, iron filings etc. to enter copper band, just make main shaft press askew or slide and be obstructed easily, so, easily produce defectives such as double-screw bolt is crooked, rosin joint, mainly influence the welding quality of product, and welding gun is short service life.

Summary of the invention

The purpose of this utility model is to provide a kind of spindle reciprocating motion steady, smoothness, and the stud welding gun of long service life.

In order to achieve the above object, the technical solution of the utility model is: a kind of stud welding gun, comprise rifle shell, support bar, double-screw bolt chuck, main shaft, insulating base, spring, guiding mechanism, cable and switching device, rifle shell front end and support bar attaching, front-end of spindle and the attaching of double-screw bolt chuck, insulating base in rear-end of spindle and the rifle shell offsets, both ends of the spring offsets with insulating base and guiding mechanism respectively, main shaft is electrically connected with cable, in the rifle shell linear bearing is housed, linear bearing is sleeved on the main shaft and is slidingly matched with the axle body of main shaft.

After adopting said structure, owing in the rifle shell linear bearing is housed, linear bearing is sleeved on the main shaft and is slidingly matched with the axle body of main shaft, therefore, main shaft just can be done straight reciprocating motion reposefully in linear bearing, and motion is smooth, even, difficult generation is rocked, is pressed askew or slides phenomenon such as be obstructed, make the double-screw bolt of welding not crooked, reduced the rosin joint defective, welding quality is good; And the utility model moves good reproducibility in long-term use, the location accurately, and is therefore durable reliable, the long service life of welding gun.

Description of drawings

Fig. 1 is a stud welding gun structural representation of the present utility model;

Fig. 2 is the structural representation of the linear bearing in the utility model;

Fig. 3 is Fig. 2 side view.

The specific embodiment

Provide embodiment below in conjunction with accompanying drawing, the utility model is further described in detail.

As shown in Figure 1, stud welding gun of the present utility model, a kind of stud welding gun, comprise rifle shell 9, support bar 3, double-screw bolt chuck 1, main shaft 10, insulating base 12, spring 13, guiding mechanism, cable 20 and switching device 22, rifle shell 9 front ends and support bar 3 attachings, main shaft 10 front ends and 1 attaching of double-screw bolt chuck, insulating base 12 in main shaft 10 rear ends and the rifle shell 9 offsets, spring 13 two ends offset with insulating base 12 and guiding mechanism respectively, main shaft 10 is electrically connected with cable 20, linear bearing 11 is housed in the rifle shell 9, and linear bearing 11 is sleeved on the main shaft 10 and is slidingly matched with the axle body of main shaft 10.

As shown in Figure 1, 2, 3, in rifle shell 9, accurately locate, be fixed with alignment pin 23 on the linear bearing 11, in the locating hole that alignment pin 23 inserts on the rifle shells 9 in order to make linear bearing 11.

As shown in Figure 1, guiding mechanism comprises holder 15, set screw 17 and adjusting knob 18, the rear end of the front end of holder 15 and spring 13 offsets, the screwed hole of holder 15 rear ends is threaded with set screw 17, fixedly connected with the adjusting knob 18 outside the rifle shell 9 by screw 19 in set screw 17 rear ends, form axial limitings by jump ring 16 between adjusting knob 18 and the rifle shell 9 and circumferentially be rotatably assorted, steady pin 14 is housed on the holder 15, has groove on the rifle shell 9 with steady pin 14 axial sliding fits.

As shown in Figure 1, also be fitted with adjusting rod 4 among the mesopore 10-1 of main shaft 10, be threaded on the adjusting rod 4 nut 6 and regulate pole socket 5 is regulated pole socket 5 and is connected with double-screw bolt chuck 1 rear threads, and the tight cap 2 of chuck is enclosed within on the double-screw bolt chuck 1 and with main shaft 10 front ends and is threaded.

As shown in Figure 1, enter rifle shell 9 in order to prevent dust and welding slag etc., lining 8 is housed on the rifle shell 9, lining 8 is positioned at linear bearing 11 front ends, and main shaft 10 front portions also are with telescopic protective sleeve 7, and protective sleeve 7 one ends are enclosed within on the lining 8, and the other end is enclosed within on the tight cap 2 of chuck.

As shown in Figure 1, switching device 22 comprises button 22-5, button spring 22-3, push-button socket 22-2, button contact chip 22-4 and microswitch 22-1.

Switching device 22 is connected with binding post A, B by lead; Cable 20 rear ends are connected to binding post 21.During use, binding post A, B are connected with the control circuit of welding machine by lead, and simultaneously, binding post 21 is connected with the welding machine electric power electric main.

Claims

1, a kind of stud welding gun, comprise rifle shell (9), support bar (3), double-screw bolt chuck (1), main shaft (10), insulating base (12), spring (13), guiding mechanism, cable (20) and switching device (22), rifle shell (9) front end and support bar (3) attaching, main shaft (10) front end and double-screw bolt chuck (1) attaching, insulating base (12) in main shaft (10) rear end and the rifle shell (9) offsets, spring (13) two ends offset with insulating base (12) and guiding mechanism respectively, main shaft (10) is electrically connected with cable (20), it is characterized in that: linear bearing (11) is housed in the rifle shell (9), and linear bearing (11) is sleeved on that main shaft (10) is gone up and is slidingly matched with the axle body of main shaft (10).

2, stud welding gun according to claim 1 is characterized in that: be fixed with alignment pin (23) on the linear bearing (11), in the locating hole on alignment pin (23) the insertion rifle shell (9).

3, stud welding gun according to claim 1, it is characterized in that: guiding mechanism comprises holder (15), set screw (17) and adjusting knob (18), the rear end of the front end of holder (15) and spring (13) offsets, the screwed hole of holder (15) rear end is threaded with set screw (17), fixedly connected by the outer adjusting knob (18) of screw (19) and rifle shell (9) in set screw (17) rear end, form axial limiting by jump ring (16) between adjusting knob (18) and the rifle shell (9) and circumferentially be rotatably assorted, steady pin (14) is housed on the holder (15), has groove on the rifle shell (9) with steady pin (14) axial sliding fit.

4, according to claim 1 or 2 or 3 described stud welding guns, it is characterized in that: also be fitted with adjusting rod (4) in the mesopore (10-1) of main shaft (10), nut (6) and adjusting pole socket (5) have been threaded on the adjusting rod (4), regulate pole socket (5) and be connected with double-screw bolt chuck (1) rear threads, the tight cap of chuck (2) is enclosed within double-screw bolt chuck (1) and upward and with main shaft (10) front end is threaded.

5, stud welding gun according to claim 4; it is characterized in that: lining (8) is housed on the rifle shell (9); lining (8) is positioned at linear bearing (11) front end; main shaft (10) front portion also is with telescopic protective sleeve (7); protective sleeve (7) one ends are enclosed within on the lining (8), and the other end is enclosed within on the tight cap of chuck (2).

6, stud welding gun according to claim 1 is characterized in that: switching device (22) comprises button (22-5), button spring (22-3), push-button socket (22-2), button contact chip (22-4) and microswitch (22-1).