CN214417906U - Telescopic stud welding gun - Google Patents

Abstract

The utility model discloses a telescopic double-screw bolt welder, including casing, motor, screw nut, main shaft, mount pad and chuck, the output shaft of motor is the lead screw, threaded connection on the lead screw nut, screw nut connect in the main shaft, and the chuck is connected directly or indirectly to the lower extreme of main shaft, and the main shaft is directly or indirectly connected with the cable, the main shaft is for the fixed setting of mount pad, the mount pad is connected with linear sliding assembly, linear sliding assembly connects in the casing, lead screw, screw nut, main shaft upper portion and mount pad all are located the casing. The utility model discloses a telescopic double-screw bolt welder, its structure is ingenious durable, is suitable for different length double-screw bolts, and the facilitate promotion is used.

Description

Telescopic stud welding gun

Technical Field

The utility model relates to a telescopic stud welding gun.

Background

The stud welding gun is a device for welding one end of a stud on the surface of a workpiece, the arc stud welding is a high-speed plant welding method which takes the stud as an electrode, takes welding arc as a heat source, stably burns between the stud and a weldment through the welding arc, and inserts the stud into a molten pool under the pressure of a welding gun after the molten pool is formed by heating the welding area of the weldment and a melting layer is formed at the end part of the stud, thereby forming a joint. Stud welding guns are widely used in high-rise steel structure buildings, industrial factory building, highways, railways, bridges, towers, automobiles, energy sources, traffic facility buildings, airports, stations, power stations, pipeline supports, crane machinery and other steel structure constructions.

Short-period stud welding, also called short-time stud welding, is one of arc-process stud welding. Short cycle stud welding requires less than 100ms to implant a stud than porcelain ring protected arc stud welding and is therefore referred to as short cycle stud welding. The advantage of its application is the field welding of small diameter short studs on thick coated steel sheets.

The inventor of this application discovers in the research and development process, current short period stud welding gun, its welder structure is complicated, comprises structures such as cylinder, electro-magnet, spring usually, and the cylinder piston is made for rubber usually, and easy wearing and tearing, and can not use under adverse circumstances for a long time, and life is short, and the inconvenient adjustment of spring force, the falling speed of stud, highly be difficult to regulate and control.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a telescopic stud welding gun can solve one or more technical problem in the background art at least, is favorable to popularizing and applying.

The utility model provides a telescopic stud welding gun, includes casing, motor, screw nut, main shaft, mount pad and chuck, the output shaft of motor is the lead screw, threaded connection on the lead screw nut, screw nut connect in the main shaft, and the chuck is connected directly or indirectly to the lower extreme of main shaft, and the main shaft is directly or indirectly connected with the cable, the main shaft is for the fixed setting of mount pad, the mount pad is connected with linear sliding assembly, linear sliding assembly connects in the casing, lead screw, screw nut, main shaft upper portion and mount pad all are located the casing.

Through adopting above-mentioned technical scheme, adopt the lead screw, lead screw nut's cooperation, lead screw nut is connected with the main shaft, make the steady drive of main shaft, and under the uncharged condition, lead screw nut can follow lead screw and remove, the main shaft can carry out concertina movement for the casing, namely the main shaft can be for the casing free movement, adaptable different length's double-screw bolt, utilize the mount pad to connect linear sliding assembly, but not utilize lead screw nut to connect linear sliding assembly, the stability of main shaft removal on the mount pad has been guaranteed, and the main shaft can not rotate, also be convenient for lead screw nut's installation, dismantle, overall structure is simple, easy processing, and convenient debugging.

As a further improvement of the utility model, the upper end of main shaft is the screw nut installation department, the through-hole that supplies the lead screw to penetrate is seted up to the upper end of screw nut installation department, installs screw nut in the screw nut installation department, and the through-hole that supplies screw nut to put into is seted up to at least one side of screw nut installation department, and the size adaptation of the side through-hole of screw nut installation department is in screw nut's size. Through adopting above-mentioned technical scheme, screw nut installs conveniently and firm, and can drive the main shaft steadily synchronous motion.

As a further improvement, be provided with insulating cylinder one between mount pad and the main shaft, insulating cylinder one overlaps on the main shaft, and the mount pad cover is on insulating cylinder one, and insulating cylinder two is installed to a lateral wall of mount pad, sets up through-hole one on the lateral wall of insulating cylinder one, and the position of through-hole one is corresponding with the position of the through-hole of insulating cylinder two. Through adopting above-mentioned technical scheme, the reliable connection between main shaft and the mount pad has been guaranteed to insulating cylinder one, insulating cylinder two, also can guarantee the insulation between the two simultaneously.

As a further improvement, the utility model also comprises a lower cover, a guide rod and a guide rod fixing seat, the lower cover is connected at the lower end of the casing, the lower end of the main shaft is penetrated out of the lower cover, the guide rod is connected in the lower cover and the guide rod fixing seat, a through hole for the chuck to penetrate is arranged on the guide rod fixing seat. Through adopting above-mentioned technical scheme, the distance between guide bar fixing base and the lower cover is convenient for adjust in the setting of guide bar, also is convenient for guarantee stud welding's straightness that hangs down.

As a further improvement, the lower end of the lower cover is connected with an elastic sheath, the lower end of the main shaft penetrates through the elastic sheath, and the main shaft is sleeved with a spring for resetting the main shaft. Through adopting above-mentioned technical scheme, the setting of elastic sheath can make the main shaft have the effect that resets for lower cover/casing on the one hand, and on the other hand can avoid getting into debris such as welding slag, dust in the casing, guarantees the steady smooth and easy of main shaft removal, prolongs the life of whole device. One of the spring or the elastic sheath can be used for resetting the main shaft, so that the main shaft has obvious resetting effect and moves smoothly.

As a further improvement of the utility model, the lower end of the guide rod fixing seat is connected with a protection cylinder. By adopting the technical scheme, the protective cylinder can protect the welding arc, avoid the interference of the external environment and also avoid the excessive influence of the welding arc on the external environment.

As a further improvement of the utility model, the side of the casing is connected with a handle. Through adopting above-mentioned technical scheme, being provided with of handle does benefit to the operator and grips to carry out manual welding.

As a further improvement of the present invention, the cable is connected between the spindle and the chuck; or, the main shaft and the chuck are integrally formed, a second through hole is formed in one side of the shell connected with the handle, and the cable penetrates through the second through hole to be connected with the main shaft. Through adopting above-mentioned technical scheme, the hookup location of cable can set up variously, is favorable to overall structure's ingenious overall arrangement.

As a further improvement, the linear sliding assembly comprises a sliding block and a sliding rail, the sliding block is movably arranged on the sliding rail, the sliding block is connected with the mounting seat, and the sliding rail is connected with the casing. Through adopting above-mentioned technical scheme, the setting of slider and slide rail, it is simple ingenious, and both installations are convenient, and it is smooth and easy to slide.

As a further improvement, be provided with insulating cylinder three between lead screw and the lead screw nut installation department, insulating cylinder three is in lead screw nut installation department top, and lead screw nut is the insulating part. By adopting the technical scheme, the insulation between the main shaft and the screw rod can be ensured by the third insulating cylinder and the screw nut, and the motor can be protected.

Compared with the prior art, the utility model discloses the beneficial effect who possesses has at least: under the outage condition, the main shaft can freely be adjusted for the lead screw, applicable different extension length's double-screw bolt, under the circular telegram condition, to the promotion highly uniform of the double-screw bolt of different length, guaranteed welding quality and efficiency, and need not complicated structures such as cylinder, electro-magnet, overall structure is compact, and is ingenious, and processing is convenient, life extension.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic structural view of a telescopic stud welding gun according to the present invention;

fig. 2 is a schematic diagram of an explosion structure of the telescopic stud welding gun according to an embodiment of the present invention;

fig. 3 is a schematic view of a partial structure of a telescopic stud welding gun according to an embodiment of the present invention;

fig. 4 is a schematic diagram of another exploded structure of a telescopic stud welding gun according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a main shaft of the telescopic stud welding gun according to an embodiment of the present invention.

In the figure: 1. a housing; 2. a first insulating cylinder; 3. a mounting seat; 4. a main shaft; 5. a lower cover; 6. an elastic sheath; 7. a guide rod fixing seat; 8. a protective cylinder; 9. a chuck; 10. a cable; 11. a slider; 12. a slide rail; 13. a lead screw nut; 14. a third insulating cylinder; 15. a motor; 16. an upper cover; 17. a handle; 18. a guide bar; 19. a second through hole; 21. flange part, 22, through hole I; 24. a spring; 31. a second insulating cylinder; 41. a lead screw nut mounting portion; 42. a fixing hole; 43. a first nut, a 44 and a screw; 151. and a lead screw.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following buckling drawings and preferred embodiments are described in detail below with reference to the following detailed description of the embodiments, structures, features and effects of the present invention.

In the description of the present application, it is to be understood that the terms "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the indicated orientations and positional relationships based on the orientation shown in the drawings for convenience in describing the application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and are not to be considered limiting of the application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

The utility model provides a telescopic stud welding gun, refer to and draw together fig. 1 to 5, including casing 1, motor 15, screw nut 13, main shaft 4, mount pad 3 and chuck 9, the output shaft of motor 15 is lead screw 151, threaded connection screw nut 13 on the lead screw 151, screw nut 13 is connected in main shaft 4, the lower extreme of main shaft 4 directly or indirectly connects chuck 9, main shaft 4 directly or indirectly is connected with cable 10, main shaft 4 is for the fixed setting of mount pad 3, mount pad 3 is connected with linear sliding assembly, linear sliding assembly connects in casing 1, lead screw 151, screw nut 13, main shaft 4 upper portion and mount pad 3 all are located casing 1. The spindle 4 is made of a metal conductive material. The length of the lead screw 151 can be set according to the length of the welding nail, the lead screw can be long or short and can be as long as 150mm, the longer lead screw can eject the welding nail of 100mm, the lead of the lead screw 151 is 10mm or more, preferably 12mm-25mm, under the condition of power failure, the main shaft can freely move relative to the shell, studs of different lengths can be clamped by the clamping heads conveniently, after the lead screw of the motor is electrified, the studs of different lengths can be lifted to the same height by rotating a preset angle, the welding quality is guaranteed, and the application range of the welding gun is widened. The motors of the present application include, but are not limited to, stepper motors, servo motors, and the like. The retractable stud welding gun of the present application includes, but is not limited to, short cycle stud welding guns, long cycle stud welding guns, and the like.

Referring to fig. 2 to 5, the upper end of the spindle 4 is a lead screw nut mounting portion 41, the lead screw nut mounting portion 41 is in a frame shape, a through hole for the lead screw 151 to penetrate through is formed in the upper end of the lead screw nut mounting portion 41, the lead screw nut 13 is mounted in the lead screw nut mounting portion 41, a through hole for the lead screw nut 13 to be placed in is formed in at least one side surface of the lead screw nut mounting portion 41, and the size of the through hole in the side surface of the lead screw nut mounting portion 41 is adapted to the size of the lead screw nut 13. The upper part of the screw nut 13 is of an oblong flat block structure, the lower part of the screw nut is of a cylindrical structure, and the width of the oblong flat block is matched with the size of a side through hole of the screw nut mounting part 41.

Referring to fig. 2 to 4, a first insulating cylinder 2 is arranged between the mounting base 3 and the main shaft 4, the first insulating cylinder 2 is sleeved on the main shaft 4, the mounting base 3 is sleeved on the first insulating cylinder 2, a second insulating cylinder 31 is installed on one side wall of the mounting base 3, a first through hole 22 is formed in the side wall of the first insulating cylinder 2, and the position of the first through hole 22 corresponds to the position of the through hole of the second insulating cylinder 31. The main shaft 4 is provided with a fixing hole 42, and a fastener is screwed into the fixing hole 42 from the through hole of the second insulating cylinder 31 to fix the mounting seat and the main shaft 4, of course, in other embodiments, the fixing hole 42 may be omitted, and the fastener may directly abut against the surface of the main shaft to complete the fixing. The upper end of the first insulating cylinder 2 is provided with a flange portion 21 protruding outwards, the upper side wall of the mounting seat 3 can abut against the lower side surface of the flange portion 21, a step portion can be arranged on the spindle 4, the upper side surface of the flange portion of the first insulating cylinder 2 can abut against the step portion, positioning and mounting of the first insulating cylinder 2 are facilitated, and mounting of the mounting seat 3 is facilitated.

Referring to fig. 1, 2 and 4, the telescopic stud welding gun further includes a lower cover 5, a guide rod 18 and a guide rod fixing seat 7, the lower cover 5 is connected to the lower end of the machine shell 1, the lower end of the spindle 4 penetrates out of the lower cover 5, the guide rod 18 is connected to the lower cover 5 and the guide rod fixing seat 7, a through hole for the chuck 9 to penetrate through is formed in the guide rod fixing seat 7, the lower end of the guide rod 18 is connected to the guide rod fixing seat 7, the guide rod 18 penetrates through the lower cover 5, a fastening piece can be arranged at the connection position of the guide rod 18 and the lower cover 5, and when the fastening piece is adjusted, the guide rod 18 can move relative to the lower cover 5, so that the distance between the lower cover 5 and the guide rod fixing seat 7 can be adjusted, and the telescopic stud welding gun can adapt to studs with different lengths. The lower extreme of lower cover 5 is connected with elastic sheath 6, and elastic sheath 6 is worn out to the lower extreme of main shaft 4, and elastic sheath 6 one end is connected in lower cover 5, and the other end is connected in main shaft 4, can play the reset action to the main shaft, certainly, can set up other types of elasticity resetting means. The main shaft 4 can be sleeved with a spring 24 for main shaft reset, the spring 24 can be positioned in the elastic sheath 6, one end of the spring can be directly or indirectly connected with the lower cover 5, and the other end of the spring is directly or indirectly connected with the main shaft 4. The lower end of the guide rod fixing seat 7 is connected with a protection cylinder 8. The side of the casing 1 is connected with a handle 17, and the handle 17 can be provided with a start button.

Referring to fig. 1, 2 and 4, the cable 10 is connected between the main shaft 4 and the chuck 9, the screw 44 is screwed at the lower end of the main shaft 4, the first nut 43 is connected to the screw 44 in a threaded manner, the first nut 43 can also be integrally formed with the main shaft, the second nut can be integrally formed on the chuck 9, the lower end of the screw 44 is connected to the chuck 9 and the second nut in a threaded manner, the cable 10 is located between the first nut 43 and the second nut, and the cable 10, the chuck 9 and the main shaft 4 can be relatively fixed by screwing the first nut and the second nut. In another embodiment, the spindle 4 and the chuck 9 are integrally formed, the housing 1 is provided with a second through hole 19 at one side connected with the handle, and the cable is inserted through the second through hole 19 to be connected with the spindle 4.

Referring to fig. 2 and 4, the linear sliding assembly includes a sliding block 11 and a sliding rail 12, the sliding block 11 is movably disposed on the sliding rail 12, the sliding block 11 is connected to the mounting base 3, and the sliding rail 12 is connected to the housing 1. In other embodiments, the linear slide assembly may take on other configurations.

Referring to fig. 2 to 4, an insulating cylinder three 14 is disposed between the screw 151 and the screw nut mounting portion 41, the insulating cylinder three 14 is located above the screw nut mounting portion 41, and the screw nut 13 is an insulating member. The insulating cylinders can be made of insulating materials such as epoxy resin materials.

When the welding tool is used, an operator holds the handle 17 by hand, puts the stud into the chuck 9, and when welding, the stud protruding out of the lower surface of the protection cylinder 8 can be upwards jacked by the fact that the protection cylinder 8 is propped against the surface of a welding part, so that the motor is powered off, the main shaft 4 can be lifted, the lower surface of the stud can be flush with the lower surface of the protection cylinder 8, the stud and the welding part are in a short circuit state at the moment, and the stud and the surface of the welding part are in a vertical state; then a starting switch on the handle 17 is pressed, the stud/welding part is connected with a small current, after a few milliseconds, under the action of lifting controlled by a motor, the spindle or the chuck is lifted, the stud is lifted (the lifting height can be controlled by a main control board), sparks are formed, and pilot arcs are generated; after the pilot arc continues for a certain time, the main power supply is automatically started, the large-current arc (welding arc) is automatically initiated, the end part of the stud and the surface of a weldment are melted, the stud begins to fall after a preset given time, the spindle 4/chuck drives the stud to be inserted into a molten pool under the action of a spring at the periphery of the spindle and the motor control rotating speed (the slower the motor rotating speed is, the buffering effect is realized during descending), the current is cut off after time delay, and the welding is finished to form a joint.

Before welding, studs with different lengths can ascend due to the main shaft 4, the lower surfaces of the studs are level to the lower surface of the protection barrel 8, and after the studs are started, the lead screws rotate by the same angle to drive the main shaft 4 to lift a preset height, so that the lifting heights of the studs with different lengths after the welding gun is started are the same, and the welding quality and the welding efficiency are guaranteed.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, changes and modifications of the above embodiments that do not depart from the technical scope of the present invention are within the scope of the present invention.

Claims (10)

1. The utility model provides a telescopic stud welding gun, its characterized in that, includes casing (1), motor (15), screw nut (13), main shaft (4), mount pad (3) and chuck (9), the output shaft of motor (15) is lead screw (151), threaded connection on lead screw (151) screw nut (13), screw nut (13) are connected in main shaft (4), and chuck (9) are directly or indirectly connected to the lower extreme of main shaft (4), and main shaft (4) are directly or indirectly connected with cable (10), main shaft (4) are for mount pad (3) fixed setting, mount pad (3) are connected with linear sliding assembly, linear sliding assembly connects in casing (1), lead screw (151), screw nut (13), main shaft (4) upper portion and mount pad (3) all are located casing (1).

2. The telescopic stud welding gun according to claim 1, wherein the upper end of the spindle (4) is a lead screw nut mounting portion (41), a through hole for a lead screw (151) to penetrate through is formed in the upper end of the lead screw nut mounting portion (41), a lead screw nut (13) is mounted in the lead screw nut mounting portion (41), a through hole for the lead screw nut (13) to be placed in is formed in at least one side surface of the lead screw nut mounting portion (41), and the size of the through hole in the side surface of the lead screw nut mounting portion (41) is matched with the size of the lead screw nut (13).

3. The telescopic stud welding gun according to claim 1 or 2, characterized in that a first insulating cylinder (2) is arranged between the mounting seat (3) and the main shaft (4), the first insulating cylinder (2) is sleeved on the main shaft (4), the mounting seat (3) is sleeved on the first insulating cylinder (2), a second insulating cylinder (31) is arranged on one side wall of the mounting seat (3), a first through hole (22) is formed in the side wall of the first insulating cylinder (2), and the position of the first through hole (22) corresponds to the position of the through hole of the second insulating cylinder (31).

4. The telescopic stud welding gun according to claim 1 or 2, further comprising a lower cover (5), a guide rod (18) and a guide rod fixing seat (7), wherein the lower cover (5) is connected to the lower end of the machine shell (1), the lower end of the spindle (4) penetrates through the lower cover (5), the guide rod (18) is connected to the lower cover (5) and the guide rod fixing seat (7), and a through hole for a chuck (9) to penetrate through is formed in the guide rod fixing seat (7).

5. The telescopic stud welding gun according to claim 4, characterized in that an elastic sheath (6) is connected to the lower end of the lower cover (5), and the lower end of the spindle (4) penetrates out of the elastic sheath (6); the main shaft (4) is sleeved with a spring (24) for resetting the main shaft.

6. The telescopic stud welding gun according to claim 4, characterized in that a protective cylinder (8) is connected to the lower end of the guide rod holder (7).

7. Telescopic stud welding gun according to claim 1 or 2, characterized in that a handle (17) is attached to the side of the housing (1).

8. Telescopic stud welding gun according to claim 7, characterized in that the cable (10) is connected between the spindle (4) and the collet (9); or the main shaft (4) and the chuck (9) are integrally formed, a second through hole (19) is formed in one side of the shell (1) connected with the handle, and a cable penetrates through the second through hole (19) to be connected to the main shaft (4).

9. The telescopic stud welding gun according to claim 1 or 2, characterized in that the linear sliding assembly comprises a sliding block (11) and a sliding rail (12), the sliding block (11) is movably arranged on the sliding rail (12), the sliding block (11) is connected with the mounting base (3), and the sliding rail (12) is connected with the machine shell (1).

10. The telescopic stud welding gun according to claim 2, characterized in that a third insulating cylinder (14) is arranged between the screw (151) and the screw nut mounting portion (41), the third insulating cylinder (14) is located above the screw nut mounting portion (41), and the screw nut (13) is an insulating member.

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