Stud chuck for stud welding machine, stud clamp and stud welding machine

Abstract

The utility model discloses a stud clamp for a stud welding machine, and relates to the technical field of stud welding, in particular to a stud chuck for the stud welding machine, the stud clamp comprising the chuck and the stud welding machine comprising the stud clamp. The stud chuck for the stud welding machine comprises two symmetrically-designed clamping units, the inner side of the lower portion of each clamping unit is provided with an arc-shaped space capable of containing and clamping a stud, and the upper portion of each clamping unit is provided with a mounting portion used for being connected with an opening and closing mechanism capable of driving the clamping unit to be opened and closed. And the opening and closing mechanism can drive the two clamping units of the stud chuck to move towards each other and back to back. According to the stud clamp, the gun head is prevented from being damaged by frictional resistance caused by direct deformation of the stud and the gun head, and the practicability of the stud clamp is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stud welding, in particular to a stud chuck for a stud welding machine, a stud clamp and a stud welding machine. Background Art

[0002] When the existing stud welding machine clamps the stud, the stud enters the middle of the welding gun head by sliding friction. The side wall of the gun head is provided with a plurality of slits. When the stud is clamped, the gun head is deformed to a certain extent, and the inner wall of the gun head clamps the stud. Although this method is simple, there is a large resistance between the stud and the gun head, which is easy to cause damage to the gun head and is not easy to be widely operated and used. Summary of the invention

[0003] The utility model aims to solve the problem that there is great resistance between the stud and the gun head in the prior art and it is not easy to be widely operated and used, and proposes a stud clamp for a stud welding machine that is more convenient to operate.

[0004] The technical solution of this utility model:

[0005] A stud chuck for a stud welding machine includes two symmetrically designed clamping units, the lower inner side of the clamping unit has an arc-shaped space that can accommodate and clamp the stud, and the upper part of the clamping unit is provided with a mounting portion for connecting an opening and closing mechanism that can drive the clamping unit to open and close. By adopting the above technical solution, the clamping unit is divided into two pieces to clamp the stud, avoiding damage to the gun head caused by friction resistance caused by direct deformation of the stud and the gun head. At the same time, the clamping unit is detachable, and a suitable stud chuck can be replaced to accommodate studs of more sizes and models, thereby improving the practicality of the stud clamp.

[0006] As a further improvement of the utility model, the side wall of the arc-shaped space is provided with a vertical strip through hole. The arrangement of the vertical strip through hole enables the clamping head to be deformed during clamping, which can facilitate clamping of the bolt head.

[0007] As a further improvement of the utility model, a boss is provided on the inner side of the bottom of the arc-shaped space, and an inclined surface is provided on the inner side of the lower end of the boss, which is gradually inclined inward from bottom to top. By adopting the above technical solution, an inclined surface is provided on the inner side of the lower end of the boss, which is gradually inclined inward from bottom to top. The boss is used to ensure the position of the fixed bolt, prevent the bolt from sliding down, make the welding more firm, and improve the quality of the welding.

[0008] A stud clamp for a stud welding machine comprises the stud clamp head and an opening and closing mechanism capable of driving two clamping units of the stud clamp head to move toward and away from each other, wherein a mounting portion of the clamping unit for connecting the opening and closing mechanism capable of driving the clamping unit to open and close is fixedly connected to the lower portion of the opening and closing mechanism. By adopting the above technical solution, the opening and closing mechanism drives the clamping mechanism to move toward and away from each other, thereby achieving the purpose of clamping the stud.

[0009] As a further improvement of the present invention, the opening and closing mechanism includes a direction-changing mechanism that can drive the clamping unit to move left and right and a lifting mechanism that can drive the direction-changing mechanism; the direction-changing mechanism includes two pull rods; the pull rod includes a first connecting arm and a second connecting arm, the first connecting arm and the second connecting arm form an angle, and the connection between the first connecting arm and the second connecting arm is a rotation fulcrum; the ends of the second connecting arms of the two pull rods are respectively connected to the mounting portion of the clamping unit; the ends of the first connecting arms of the two pull rods are connected to the lower end of the lifting mechanism. By adopting the above technical solution, the first connecting arm and the second connecting arm convert the vertical movement force of the connecting mechanism into a horizontal movement force, thereby realizing the opening and closing of the two clamping units, and then achieving the purpose of opening and closing the clamping bolts.

[0010] As a further improvement of the utility model, the lifting mechanism includes a motor, a screw connected to the motor output shaft, a nut sleeved on the screw, a limiter for limiting the rotation of the nut, and a connecting mechanism connecting the pull rod and the nut. By adopting the above technical solution, the nut limiter limits the displacement of the nut, the connecting mechanism drives the nut to move up and down, and the nut limiter limits the rotation of the nut, thereby achieving the anti-rotation effect of the nut.

[0011] As a further improvement of the utility model, the connecting mechanism includes a cylinder body and a piston, a groove is provided in the middle of the lower end of the piston, and a cross bar is transversely provided in the groove; the ends of the first connecting arms of the two pull rods are both provided with openings; the cross bar is accommodated in the openings, so that the connecting mechanism is connected to the direction-changing mechanism. By adopting the above technical solution, the connecting mechanism is connected to the pull rod, driving the direction-changing mechanism to move, and realizing the opening and closing effect of the opening and closing mechanism.

[0012] As a further improvement of the utility model, the ends of the second connecting arms of the two pull rods are connected to the mounting part of the clamping unit through two connecting arms respectively; the mounting part of the clamping unit is provided with a mounting slot, the inner wall of the mounting slot is provided with mounting holes in the left and right directions, and the connecting arms are provided with mounting holes in the left and right directions corresponding to the mounting holes in the left and right directions of the mounting slot. By adopting the above technical solution, the connecting arm is fixed to the clamping unit, driving the opening and closing mechanism to move.

[0013] As a further improvement of the present invention, the top surface of the connecting arm is provided with a mounting hole for embedding the second connecting arm end of the two pull rods. By adopting the above technical solution, the bottom of the pull rod is fixed to the mounting hole on the top surface of the connecting arm, achieving the effect of integrally connecting the connecting mechanism and the direction-changing mechanism.

[0014] A stud welding machine comprises a stud welding gun and the above-mentioned stud clamp connected to the gun head of the stud welding gun.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] The utility model provides an opening and closing mechanism and a bolt clamp including two clamping units to control the opening and closing state of the bolt clamp, so that the bolt clamp can be more convenient and simple when clamping the bolt, avoiding damage to the gun head caused by friction resistance. At the same time, the appropriate bolt clamp can be replaced according to the specific situation, so that more types of bolts can be clamped, making the device more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a front structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the front structure of the hidden cylinder housing of the utility model;

[0020] Figure 4 It is a schematic diagram of the explosion structure of the utility model;

[0021] Figure 5 It is a partial structural schematic diagram of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the connecting rod and nut connecting mechanism of the utility model;

[0023] Figure 7 It is a structural schematic diagram of the pull rod of the utility model;

[0024] Figure 8 It is a structural schematic diagram of the connecting arm of the utility model;

[0025] Fig. 9 It is a structural schematic diagram of the clamping unit of the utility model;

[0026] Description of the numbers in the figure:

[0027] 1 housing, 2 motor, 21 screw rod, 3 connecting plate, 4 nut limiter, 5 cylinder housing, 6 nut, 7 top sleeve, 8 connecting mechanism connecting pull rod and nut, 81 piston, 82 cross bar, 801 groove, 9 pull rod, 91 first connecting arm, 92 second connecting arm, 93 rotation fulcrum, 94 pull rod opening, 10 connecting arm, 101 connecting arm mounting hole, 11 clamping unit, 111 arc space, 112 mounting hole, 113 boss, 114 mounting part for connecting the opening and closing mechanism that can drive the clamping unit to open and close, 115 vertical strip through hole, 116 mounting groove, 12 insulating sheet, 13 insulating sleeve, 14 bolt. DETAILED DESCRIPTION

[0028] The following will combine the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the utility model belong to the scope of protection of the utility model.

[0029] A stud chuck for a stud welding machine includes two clamping units 11, see Fig. 9 The lower inner side of the two clamping units 11 has an arc-shaped space 111 that can accommodate and clamp the bolt 14 after combination, and the upper part of the two clamping units 11 is provided with a mounting portion 114 for connecting an opening and closing mechanism that can drive the clamping units to open and close. The side wall of the arc-shaped space 111 is provided with a vertical strip through hole 115. The bottom inner side of the arc-shaped space 111 is provided with a boss 113, and the inner side of the lower end of the boss 113 is provided with an inclined surface that gradually tilts inward from bottom to top.

[0030] Please see Figure 1-5 A stud clamp for a stud welding machine includes the above-mentioned stud clamp and an opening and closing mechanism that can drive two clamping units of the stud clamp to move toward and away from each other, and the mounting portion 114 of the clamping unit 11 is fixedly connected to the lower portion of the opening and closing mechanism.

[0031] The bolt clamp also includes a housing 1, a cylinder housing 5, a connecting arm 10, an insulating sheet 12, and an insulating sleeve 13. The opening and closing mechanism includes a stepping motor 2, a screw rod 21, a connecting plate 3, a nut stopper 4, a nut 6, a top sleeve 7, a connecting mechanism 8 connecting the pull rod and the nut, and a pull rod 9; the opening and closing mechanism is arranged in the cylinder housing 5 to protect the opening and closing mechanism from damage, the screw rod 21 is a motor shaft with an external thread or a screw rod fixedly connected to the motor shaft, and is fixedly connected to the stepping motor 2, the screw rod 21 is fixedly fixed on the connecting mechanism 8, the nut 6 and the top sleeve 7 are sleeved on the screw rod 21, the screw rod 21 rotates, and the nut 6 sleeved on the screw rod 21 moves up and down under the limiting action of the nut stopper 4, so that the nut stopper 4 limits the rotation of the nut 6, and the nut stopper 4 is a pin, the upper end of the pin abuts against the stepping motor 2, and the lower end is penetrated by the nut 6, and the top sleeve 7 is arranged below the nut 6, and the lower side contacts the connecting mechanism 8.

[0032] The opening and closing mechanism includes a changing mechanism that can drive the clamping unit 11 to move left and right and a lifting mechanism that can drive the changing mechanism; the changing mechanism includes two pull rods 9; the pull rod 9 includes a first connecting arm 91 and a second connecting arm 92, the first connecting arm 91 and the second connecting arm 92 form an angle, and the connection between the first connecting arm 91 and the second connecting arm 92 is a rotating fulcrum 93; the ends of the second connecting arms 92 of the two pull rods 9 are respectively connected to the mounting portion 114 of the clamping unit 11; the end connection of the first connecting arms 91 of the two pull rods 9 is connected to the lower end of the lifting mechanism.

[0033] The lifting mechanism includes a motor 2, a screw rod 21 connected to the output shaft of the motor 2, a nut 6 sleeved on the screw rod 21, a limiter 4 for limiting the rotation of the nut 6, and a connecting mechanism 8 connecting the pull rod and the nut.

[0034] Please see Figure 6-7 The connecting mechanism 8 includes a piston 81 and a crossbar 82. A groove 801 is provided in the middle of the lower end of the piston 81. A crossbar 82 is transversely provided in the groove 801. The connecting mechanism 8 moves vertically up and down under the drive of the nut 6. The crossbar pull rod 9 includes a first connecting arm 91 and a second connecting arm 92. The ends of the first connecting arms 91 of the two pull rods 9 are both provided with an opening 94. The crossbar 82 is accommodated in the opening 94, so that the connecting mechanism 8 is connected to the direction-changing mechanism. The first connecting arm 91 used for limiting the pull rod 9, the pull rod 9 mainly plays the role of connection and support control. Under the action of the connecting mechanism 8, the crossbar 82 drives the first connecting arm 91 to move up and down, the first connecting arm 91 and the second connecting arm 92 form an angle, the first connecting arm 91 drives the second connecting arm 92 to move left and right, and the vertical moving force of the connecting mechanism 8 is converted into the horizontal moving force, so as to realize the opening and closing of the two clamping units 11, and then play the purpose of opening and closing the clamping bolt 14.

[0035] Please see Figure 8-9The utility model proposes a bolt clamp, including two symmetrically designed clamping units 11. The clamping units are detachable, and suitable bolt clamps can be replaced to adapt to bolts of more sizes and models, thereby improving the practicality of the bolt clamp. A mounting hole 112 is provided on the upper part of the clamping unit 11. The upper groove of the clamping unit 11 is used to accommodate a connecting arm 10 and an insulating sheet 12. The insulating sheet 12 is installed on the outer side of the mounting part of the clamping unit 11. The insulating sleeve 13 passes through the mounting hole 112 on the upper part of the clamping unit 11 to fix the connecting arm 10 and the insulating sheet 12. The top surface of the connecting arm 10 is provided with a mounting hole 101 at the end of the second connecting arm 92 of the two pull rods 9. The second connecting arm 92 of the pull rod 9 is inserted into the connecting arm 10 to realize the connection between the opening and closing mechanism and the clamping unit 11. The lower inner side of the clamping unit 11 has an arc-shaped space 111 that can accommodate and clamp the bolt 14. The ends of the second connecting arms 92 of the two pull rods 9 are connected to the mounting portion 114 of the clamping unit 11 through two connecting arms 10 respectively; the mounting portion 114 of the clamping unit 11 is provided with a mounting groove 116, and the inner wall of the mounting groove 116 is provided with mounting holes in the left and right directions, and the connecting arms 10 are provided with mounting holes in the left and right directions corresponding to the mounting holes in the left and right directions of the mounting groove. The side wall of the arc space is provided with a vertical bar through hole 115, and the bottom inner side of the arc space is provided with a boss 113, and the lower end inner side of the boss 113 is provided with an inclined surface that gradually tilts inward from bottom to top, and the boss 113 is used to ensure the position of the fixing bolt 14, prevent the bolt 14 from sliding down, make the welding more firm, and improve the quality of the welding.

[0036] When the clamping unit 11 of the stud chuck wraps around the stud 14, the motor 2 rotates, driving the nut 6 on the screw rod 21 to move upward, so that the connecting mechanism 8 moves back upward, and the cross bar 82 drives the first connecting arm 91 of the pull rod 9 to move upward, and the second connecting arm 92 retracts inward, at which time the clamping unit 11 can be driven to close, so that the clamping unit 11 can be clamped on the outer wall of the stud 14, completing the clamping of the stud 14 and completing the preparation work for welding.

[0037] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A stud chuck for a stud welding machine, characterized in that: The invention comprises two clamping units (11), wherein the inner sides of the lower parts of the two clamping units (11) are provided with arc-shaped spaces (111) which can accommodate and clamp the bolts (14) after being combined, and the upper parts of the two clamping units (11) are provided with mounting parts (114) for connecting an opening and closing mechanism which can drive the clamping units to open and close.

2. A stud chuck for a stud welding machine according to claim 1, characterized in that: The side wall of the arc-shaped space (111) is provided with a vertical strip-shaped through hole (115).

3. A stud chuck for a stud welding machine according to claim 1, characterized in that: A boss (113) is provided on the inner side of the bottom of the arc-shaped space (111), and an inclined surface which gradually inclines inwards from bottom to top is provided on the inner side of the lower end of the boss (113).

4. A stud clamp for a stud welding machine, characterized in that: It comprises the bolt clamp as claimed in claim 1, and an opening and closing mechanism capable of driving two clamping units of the bolt clamp to move toward and away from each other, wherein the mounting portion (114) of the clamping unit (11) is fixedly connected to the lower portion of the opening and closing mechanism.

5. A stud clamp for a stud welding machine according to claim 4, characterized in that: The opening and closing mechanism comprises a direction-changing mechanism capable of driving the clamping unit (11) to move left and right, and a lifting mechanism capable of driving the direction-changing mechanism; the direction-changing mechanism comprises two pull rods (9); the pull rods (9) comprise a first connecting arm (91) and a second connecting arm (92), the first connecting arm (91) and the second connecting arm (92) forming an angle, and the connection point between the first connecting arm (91) and the second connecting arm (92) is a rotation fulcrum (93); the ends of the second connecting arms (92) of the two pull rods (9) are respectively connected to the mounting portion (114) of the clamping unit (11); the ends of the first connecting arms (91) of the two pull rods (9) are connected to the lower end of the lifting mechanism.

6. A stud clamp for a stud welding machine according to claim 5, characterized in that: The lifting mechanism comprises a motor (2), a screw rod (21) connected to an output shaft of the motor (2), a nut (6) sleeved on the screw rod (21), a limiter (4) for limiting the rotation of the nut (6), and a connecting mechanism (8) connecting the pull rod and the nut.

7. A stud clamp for a stud welding machine according to claim 6, characterized in that: The connecting mechanism (8) comprises a cylinder body and a piston (81); a groove (801) is provided in the middle of the lower end of the piston (81); a cross bar (82) is transversely provided in the groove (801); the ends of the first connecting arms (91) of the two pull rods (9) are each provided with an opening (94); the cross bar (82) is accommodated in the opening (94), so that the connecting mechanism (8) is connected to the direction-changing mechanism.

8. The stud clamp for a stud welding machine according to claim 5, characterized in that: The ends of the second connecting arms (92) of the two pull rods (9) are respectively connected to the mounting portion (114) of the clamping unit (11) through two connecting arms (10); the mounting portion (114) of the clamping unit (11) is provided with a mounting groove (116), and the inner wall of the mounting groove (116) is provided with mounting holes in the left and right directions, and the connecting arms (10) are provided with mounting holes in the left and right directions corresponding to the mounting holes in the left and right directions of the mounting groove.

9. A stud clamp for a stud welding machine according to claim 8, characterized in that: The top surface of the connecting arm (10) is provided with a mounting hole (101) for embedding the end of the second connecting arm (92) in which the two pull rods (9) are embedded.

10. A stud welding machine, characterized in that: The invention comprises a stud welding gun and a stud clamp according to any one of claims 4 to 9 connected to the gun head of the stud welding gun.

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