CN205437452U - Stud welding gun suitable for T type weld nail - Google Patents

Abstract

The utility model discloses a stud welding gun suitable for T type weld nail, it includes the welder main part, the welder main part includes casing, the main shaft body, weld nail chuck and actuating mechanism, being equipped with the guide pillar in the bilateral symmetry of casing, being equipped with the guide pin bushing in the upper and lower portion of every side casing, every side guide pillar is worn to establish and is being lain in the upper and lower guide pin bushing of homonymy, and the cover is equipped with the spring on lieing in the guide pillar between the upper and lower guide pin bushing the lower extreme of spring is equipped with the stopper, at the lower extreme fixedly connected with of both sides guide pillar fixing base on the fixing base, the weld nail chuck is equipped with the perforation that is used for the weld nail chuck to pass smoothly under the bottom of fixing base, under fenestrate fixedly connected with porcelain ring chuck. Welder can realize T type weld nail and porcelain ring's automatic clamp and get and break away from, simple structure not only, and welding quality is reliable, can cooperate robot or three -axis movement platform to use moreover, realizes T type weld nail's automatic arc stud welding.

Description

A stud welding gun suitable for T-shaped welding studs

technical field

The utility model relates to a stud welding torch, in particular to a stud welding torch suitable for T-shaped welding studs, belonging to the technical field of stud welding equipment.

Background technique

T-shaped welding studs (also known as cylindrical head welding studs) are widely used as shear connectors (also known as shear keys) in steel structures and "steel-concrete" structures in construction and bridge construction. The arc stud welding method is planted and welded on steel beams, steel columns and other structures. During the welding process, it is necessary to use a ceramic ring to protect the molten pool from air invasion, so as to avoid the deterioration of the quality of the joint, and a ceramic ring is required for each stud to be welded.

At present, the welding torch that realizes the clamping of T-shaped welding studs and protective ceramic rings generally includes: an injection-molded welding torch housing, a welding stud chuck, a main shaft body driving structure that drives the welding stud chuck to do lifting movement, and a ceramic ring chuck. The ceramic ring chuck is a pressing plate provided with a slot, and the pressing plate is fixed on the lower ends of two supporting rods, and the supporting rods are respectively fixed on both sides of the welding torch shell. During the stud welding operation, the T-shaped welding stud can only be manually loaded into the stud chuck, and then the welding torch is manually pressed down so that the slot on the pressure plate is clamped on the ceramic ring, so that the welding torch can be connected to the welding stud and the porcelain ring. The clamping of the ring, this operation method not only has low productivity, only about 6 pieces can be welded per minute, but also the yield rate is low because the coaxiality between the welding stud and the ceramic ring cannot be guaranteed.

Utility model content

In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide a stud welding torch suitable for T-shaped welding studs, so as to realize the automatic clamping and detachment of T-shaped welding studs and ceramic rings, and promote the realization of T-shaped welding studs. Automatic arc stud welding of nails.

In order to achieve the above object, the utility model adopts the following technical solutions:

A stud welding torch suitable for T-shaped welding studs, comprising a welding torch main body, the welding torch main body includes a shell, a main shaft body, a welding stud chuck for installing welding studs and a driving main shaft body arranged at the front end of the main shaft body for lifting The driving mechanism of the movement; it is characterized in that guide posts are symmetrically provided on both sides of the housing, guide sleeves are provided on the upper and lower parts of the housing on each side, and the guide posts on each side are installed on the upper and lower parts of the same side. In the lower guide sleeve, a spring is sleeved on the guide post between the upper and lower guide sleeves, a limit block is provided at the lower end of the spring, and a fixed seat is fixedly connected to the lower ends of the guide posts on both sides. A perforation for the welding stud chuck to pass through is provided on the fixing seat directly below the welding stud chuck, and a porcelain ring chuck is fixedly connected to the bottom of the fixing seat and directly below the perforation.

As an embodiment, the ceramic ring chuck is formed by several elastic pieces distributed along the circumference, each elastic piece is L-shaped, and the diameter of the cavity formed by the long arms of all the L-shaped elastic pieces is larger than that of the welding stud The maximum outer diameter value of the collet.

As a preferred solution, the end of the short arm of each L-shaped elastic piece is sequentially provided with an introduction slope, a positioning surface and an exit slope from bottom to top, and a boss is formed between the positioning surface and the exit slope.

As a further preferred solution, the introduction inclined surface is inclined upward from the outside to the inside, the outlet inclined surface is inclined upward from the inside to the outside, and the positioning surface is at a right angle.

As a preferred solution, the limit block is an adjusting nut.

Compared with the prior art, the utility model has the following beneficial technical effects:

The stud welding gun provided by the utility model realizes the automatic clamping and detachment of the T-shaped welding stud and the protective ceramic ring for the first time, and can be used with a robot or a three-axis motion platform to realize automatic arc stud welding of the T-shaped welding stud; and, The utility model also has the advantages of simple structure, convenient maintenance, safe use, reliable welding quality, etc., and has significant industrial application value and progress.

Description of drawings

Fig. 1 is a schematic structural view of a stud welding gun suitable for T-shaped welding studs provided by an embodiment of the present invention;

Fig. 2 is a schematic cross-sectional structure diagram of a ceramic ring chuck provided by the embodiment of the present invention;

Fig. 3 to Fig. 12 are schematic diagrams of the state structure of the stud welding torch of the present invention during the whole process of automatically clamping the T-shaped welding stud and the ceramic ring to the automatic detachment of the welding stud and the ceramic ring at the end of welding.

The symbols in the figure are shown as follows: 1. The main body of the welding torch; 11. The shell; 12. The main shaft; 13. The welding stud chuck; Fixing seat; 61, perforation; 7, ceramic ring chuck; 71, L-shaped elastic sheet; 72, leading-in slope; 73, positioning surface; 74, leading-out slope; 75, boss; 8, T-shaped welding stud; 9, Porcelain ring; 10. Parts to be welded.

detailed description

The technical solutions of the present utility model are further described in detail below in conjunction with the accompanying drawings and embodiments.

Example

As shown in Figure 1: a stud welding gun suitable for T-shaped welding studs provided by this embodiment includes a welding torch main body 1, and the welding torch main body 1 includes a housing 11, a main shaft body 12 and a front end of the main shaft body 12. The welding stud chuck 13 used to install the welding stud and the driving mechanism (not shown in Fig. 1) for driving the main shaft to move up and down; guide posts 2 are symmetrically arranged on both sides of the housing 11, and on each side of the shell The upper and lower parts of the body 11 are provided with guide sleeves 3, and the guide posts 2 on each side are set in the upper and lower guide sleeves 3 on the same side, and are sleeved on the guide posts 2 between the upper and lower guide sleeves 3. There is a spring 4, the lower end of the spring 4 is provided with a limit block 5 (adjustable nuts can be used to facilitate adjustment operations), and the lower ends of the guide posts 2 on both sides are fixedly connected with a fixed seat 6, on the fixed seat 6, Just below the welding stud chuck 13 is provided with a perforation (not shown in Fig. 1 ) for the welding stud chuck to pass through smoothly, and a ceramic ring chuck 7 is fixedly connected to the bottom of the fixing base 6 and directly below the perforation. .

As shown in Figure 1 and Figure 2: the ceramic ring chuck 7 is formed by a number of elastic pieces 71 distributed along the circumference, each elastic piece 71 is L-shaped, formed by the long arms of all L-shaped elastic pieces 71 The cavity diameter value d is greater than the maximum outer diameter value of the welding stud chuck 13 . The end of the short arm of each L-shaped elastic piece 71 is sequentially provided with an introduction slope 72 , a positioning surface 73 and an exit slope 74 from bottom to top, and a boss 75 is formed between the positioning surface 73 and the exit slope 74 . The introduction slope 72 is inclined upward from the outside to the inside, the outlet slope 74 is sloped upward from the inside to the outside, and the positioning surface 73 is at a right angle. The design can ensure the accurate alignment of the welding stud chuck and the T-shaped welding stud head and the coaxiality between the T-shaped welding stud and the ceramic ring, thereby ensuring the consistency of welding quality.

The working process of using the stud welding gun to realize the automatic clamping and detachment of T-shaped welding studs and ceramic rings is as follows:

First, manually or by using a robot or a three-axis motion platform, the welding torch main body 1 is moved downward to directly above the T-shaped welding stud 8 that is sleeved with a ceramic ring 9, and when the welding torch main body 1 moves downward, the spring 4 is compressed (such as As shown in Figure 3);

As the welding gun main body 1 continues to descend, the ceramic ring chuck 7 contacts the head of the T-shaped welding stud 8, and the head of the T-shaped welding stud 8 is initially aligned with the ceramic ring chuck 7 through the introduction slope 72, slides in and Clamped in the positioning surface 73. Since the positioning surface 73 is at a right angle, the coaxiality between the T-shaped welding stud 8 and the ceramic ring chuck 7 can be ensured. In addition, since the head of the T-shaped welding stud 8 abuts on the right angle of the positioning surface 73, the ceramic ring chuck 7 cannot continue to move downwards at this moment and remains stationary, and the spring 4 is further compressed (as shown in Figure 4 );

At this time, the main shaft body 12 is driven down by the driving mechanism, so that the welding stud chuck 13 continues to move downward until it is pressed against the top surface of the short side of the L-shaped elastic piece 71. During this process, the spring 4 maintains the position shown in Figure 4. Shown state (as shown in Figure 5);

Continue to make the main shaft body 12 do the downward movement, so that the welding stud chuck 13 continues to press down the short side top surface of the L-shaped elastic sheet 71, so that the elastic sheet 71 that constitutes the ceramic ring chuck 7 is opened outwards, and the T-shaped welding The head of the nail 8 enters the welding stud chuck 13, and at this time the main body 1 of the welding torch is further descended, so that the ceramic ring chuck 7 contacts the ceramic ring 9, and the ceramic ring 9 enters the positioning surface under the guidance of the introduction slope 72 73 is positioned and clamped, and now the spring 4 is in a compressed limit state (as shown in Figure 6);

Make the main body 1 of the welding torch go up, and carry the welding stud chuck 13 to move upward, so that the T-shaped welding stud 8 is lifted. pre-compression), when the ceramic ring 9 is coaxial with the T-shaped welding stud 8 and is in the clamping state to be welded, the spring 4 recovers (as shown in Figure 7), and then manually or by using a robot or a three-axis motion platform At this time, the welding torch body 1 is shifted to the top of the welding point of the workpiece 10 to be welded (as shown in Figure 8); The distance between the bottom of the nail 8 and the bottom of the ceramic ring is the welding pre-compression (generally 1 mm to 10 mm), which can be adjusted by adjusting the limit block 5 arranged at the lower end of the spring 4;

Then welding torch main body 1 is descended, when the bottom of porcelain ring 9 (under the condition that the bottom of T-shaped welding stud 8 is flush with porcelain ring 9 bottoms) or the bottom of T-shaped welding stud 8 (at the bottom of T-shaped welding stud 8 is lower than In the case of the ceramic ring bottom) when in contact with the workpiece 10 to be welded, perform stud welding (as shown in Figure 9);

After the welding is finished, after the solder joint is solidified (the bottom of the T-shaped welding stud 8 has been planted and welded on the workpiece to be welded, and the ceramic ring is also solidified at the welding position), first the main shaft body 12 is driven by the driving mechanism to lift up, so that the welding Nail chuck 13 goes up, breaks away from the head of T-shaped welding stud 8 and returns to the initial state (as shown in Figure 10), then makes welding torch main body 1 go up, so that ceramic ring chuck 7 is lifted and connected with ceramic ring 9 is disengaged and contacts with the head of T-shaped welding stud 8 (as shown in Figure 11); Continue to make welding torch main body 1 go up, can drive the head of T-shaped welding stud 8 to be supported by the downward guiding effect of leading-out slope 74 Open the elastic sheet 71 to separate from the ceramic ring chuck 7, thereby completing an automatic welding operation (as shown in Figure 12). Such a reciprocating cycle can realize automatic clamping and welding of T-shaped welding studs and protective ceramic rings.

In addition, it needs to be explained here: the welding torch main body 1 can adopt the existing stud welding torch structure, and there is no limitation here; the driving mechanism for driving the main shaft body to do the lifting movement can use the existing electromagnet-spring The structure and the linear motor drag the structure, and do not make any restrictions here.

Finally, it is necessary to point out that: the above is only a preferred specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field shall disclose Within the technical scope, easily conceivable changes or replacements shall be covered by the protection scope of the present utility model.

Claims (7)

1. being applicable to a stud welding gun for T-shaped weldering nail, including torch body, described torch body includes housing, main shaft and is arranged on the drive mechanism moved up and down in order to the weldering nail clip head and drive shaft body of installing weldering nail of main shaft front end；It is characterized in that: be symmetrically arranged on two with guide pillar at described housing, it is provided with guide pin bushing in the upper and lower part of every side body, every side guide pillar is located in the upper and lower guide pin bushing being positioned at homonymy, and it is arranged with spring on the guide pillar between upper and lower guide pin bushing, it is provided with limited block in the lower end of described spring, it is fixedly connected with fixing seat in the lower end of both sides guide pillar, on described fixing seat, weldering nail clip head be arranged right below for welding the perforation that nail clip head passes through, in the described bottom of fixing seat, the underface of perforation be fixedly connected with porcelain ring chuck.

Stud welding gun the most according to claim 1, it is characterized in that: described porcelain ring chuck is circumferentially distributed by several flexure strips and is formed, each flexure strip is L-shaped, by long-armed the formed cavity diameter value of all L-shaped flexure strips more than the maximum outside diameter value welding nail clip head.

Stud welding gun the most according to claim 1, it is characterised in that: the galianconism end of each L-shaped flexure strip is sequentially provided with importing inclined-plane, locating surface and derivation inclined-plane from bottom to top, is forming boss between locating surface and derivation inclined-plane.

Stud welding gun the most according to claim 3, it is characterised in that: described importing inclined-plane is inclined upwardly from outside to inside.

Stud welding gun the most according to claim 3, it is characterised in that: described derivation inclined-plane is inclined upwardly from the inside to the outside.

Stud welding gun the most according to claim 3, it is characterised in that: described locating surface is rectangular.

Stud welding gun the most according to claim 1, it is characterised in that: described limited block is adjusting nut.