CN210789635U - Single-sided resistance spot welding device - Google Patents
Single-sided resistance spot welding device Download PDFInfo
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- CN210789635U CN210789635U CN201921642633.7U CN201921642633U CN210789635U CN 210789635 U CN210789635 U CN 210789635U CN 201921642633 U CN201921642633 U CN 201921642633U CN 210789635 U CN210789635 U CN 210789635U
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Abstract
The utility model discloses a single face resistance spot welding device, relate to the welding field, its first cylinder is connected with the one end of positive electrode pole with drive positive electrode pole reciprocating motion, the second cylinder is connected with the one end of negative electrode pole with drive negative electrode pole reciprocating motion, the third cylinder is connected with drive support arm reciprocating motion with the support arm, first cylinder and second cylinder all are connected so that first cylinder and second cylinder can with support arm synchronous motion with the third cylinder, and the one end of support arm sets up with positive electrode pole and negative electrode pole relatively, so that treat welded panel can press from both sides tightly between the one end of support arm and positive electrode pole and negative electrode pole. The closed loop of power is realized through setting up this single face resistance spot welding device of support arm, and support arm and positive electrode pole and negative electrode pole cooperation can perfectly improve welding pressure's control accuracy simultaneously, reduce robot wearing and tearing and rosin joint, provide better welding quality.
Description
Technical Field
The utility model relates to a welding field especially relates to a single face resistance spot welding device.
Background
With the development of the automobile industry, the appearance requirement of a consumer on an automobile is continuously raised, the welding requirement on the appearance part of the white automobile body surface of the automobile is more and more strict, the surface is required to be smooth and attractive, and pits left by welding are not splashed.
Single-side welding is widely used for exterior parts and opening and closing parts. As shown in fig. 8, a conventional one-side spot welding apparatus has a welding jaw fixed to a welding robot. The welding tongs provides welding pressure to the plate during welding, because the closed cycle of soldering tongs itself does not form power, according to newton's third law, the robot can receive reverse acting force, and the repeated welding that repeats can cause the axle joint accelerated wear of robot, reduces robot life. In addition, due to the influence of self factors such as the size tolerance of the plates, the gluing and the like, the gaps between the plates needing to be welded cannot be completely attached by applying pressure from one side, so that the single-side welding quality is unstable, and the problem of insufficient welding often occurs.
SUMMERY OF THE UTILITY MODEL
For solving above technical problem, the utility model provides a single face resistance spot welding device, this single face resistance spot welding device realize the closed loop of power to can perfect improvement welding pressure's control accuracy, provide better welding quality.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a single face resistance spot welding device, include: a soldering turret body; the welding assembly comprises a positive welding mechanism and a negative welding mechanism which are arranged side by side, the positive welding mechanism comprises a first cylinder, a positive electrode rod and a positive electrode cap, the first cylinder is connected with one end of the positive electrode rod to drive the positive electrode rod to move in a reciprocating mode, the other end of the positive electrode rod is provided with the positive electrode cap, the negative welding mechanism comprises a second cylinder, a negative electrode rod and a negative electrode cap, the second cylinder is connected with one end of the negative electrode rod to drive the negative electrode rod to move in a reciprocating mode, and the other end of the negative electrode rod is provided with the negative electrode cap; the balance assembly comprises a third cylinder and a supporting arm, the third cylinder is arranged on the welding tongs body and is connected with the supporting arm to drive the supporting arm to reciprocate, the first cylinder and the second cylinder are both connected with the third cylinder so that the first cylinder and the second cylinder can synchronously move with the supporting arm, and one end of the supporting arm is arranged opposite to the positive electrode rod and the negative electrode rod so that a plate to be welded can be clamped between one end of the supporting arm and the positive electrode rod and the negative electrode rod; the transformer is arranged on the welding clamp body, and the positive electrode of the transformer is electrically connected with the positive electrode rod, and the negative electrode of the transformer is electrically connected with the negative electrode rod; and the first air cylinder, the second air cylinder and the third air cylinder are communicated with the air pressure control system.
Further, the first cylinder comprises a first cylinder body and a first piston rod which is slidably arranged in the first cylinder body, the second cylinder comprises a second cylinder body and a second piston rod which is slidably arranged in the second cylinder body, the third cylinder comprises a third cylinder body and two third piston rods which are parallel to each other, the third cylinder body is slidably arranged on the two third piston rods, two ends of each third piston rod are fixedly connected with the soldering turret body, the third cylinder body is fixedly connected with the first cylinder body, the second cylinder body and the supporting arm, one end of the first piston rod is connected with one end of the positive electrode rod, one end of the second piston rod is connected with one end of the negative electrode rod, the first cylinder body, the second cylinder body and the third cylinder body are all communicated with the air pressure control system.
Furthermore, the welding tongs body comprises a left side plate, a right side plate, a rear side plate, a front mounting plate, a rear mounting plate and a top plate, wherein the left side plate and the right side plate are arranged oppositely, the rear side plate, the front mounting plate and the rear mounting plate are arranged between the left side plate and the right side plate, the two opposite sides of the rear side plate, the two opposite sides of the front mounting plate and the two opposite sides of the rear mounting plate are respectively perpendicular to the left side plate and the right side plate and are fixedly connected with the left side plate and the right side plate, the top plate is arranged at the top ends of the left side plate and the right side plate and is fixedly connected with the left side plate and the right side plate, an installation cavity is enclosed by the left side plate, the right side plate, the rear side plate and the top plate, the transformer is arranged on the top plate, and the rear side plate is used for being connected with a, the first cylinder, the second cylinder and the third cylinder set up in the installation intracavity, just the both ends of third piston rod respectively with preceding mounting panel with back mounting panel fixed connection.
Furthermore, the balance assembly further comprises a fixing seat, a supporting rod and a spring, the first cylinder body, the second cylinder body and the third cylinder body are fixedly connected with the fixing seat, a through hole is formed in the fixing seat, one end of the supporting rod is slidably installed in the through hole, the other end of the supporting rod is fixedly connected with the welding clamp body, the spring is sleeved on the supporting rod, one end of the spring abuts against the fixing seat, and the other end of the spring abuts against the welding clamp body.
Furthermore, the single-sided resistance spot welding device further comprises a first sliding block, a first movable electrode arm, a second sliding block and a second movable electrode arm, a supporting plate is arranged on the fixing seat, a first sliding rail and a second sliding rail are arranged on the supporting plate, the first movable electrode arm is fixedly connected with the first sliding block, the first sliding block is slidably mounted on the first sliding rail, one end of the first movable electrode arm is connected with the first piston rod, the other end of the first movable electrode arm is connected with one end of the positive electrode rod, the second movable electrode arm is fixedly connected with the second sliding block, the second sliding block is slidably mounted on the second sliding rail, one end of the second movable electrode arm is connected with the second piston rod, and the other end of the second movable electrode arm is connected with one end of the negative electrode rod.
Furthermore, the positive pole of the transformer is provided with a positive conductive block, the negative pole of the transformer is provided with a negative conductive block, the positive conductive block is connected with the first sliding block through a first soft connection structure, the negative conductive block is connected with the second sliding block through a second soft connection structure, and the first soft connection structure, the second soft connection structure, the first sliding block, the second sliding block, the first movable electrode arm and the second movable electrode arm are all made of conductive materials.
Further, the pneumatic control system includes air supply, first switching-over valve and second switching-over valve, the air supply with first switching-over valve with the second switching-over valve all communicates, first switching-over valve through first pressure regulating valves with first cylinder body intercommunication, the second switching-over valve through second pressure regulating valves and third pressure regulating valves respectively with the second cylinder body with third cylinder body intercommunication.
Furthermore, the exhaust ports of the first reversing valve and the second reversing valve are respectively provided with a silencer.
Furthermore, the single-sided resistance spot welding device also comprises an electrical box which is arranged on the soldering turret body, and the electrical box is provided with a signal plug which is electrically connected with the signal wire.
Further, a water valve plate is arranged on the transformer.
The utility model discloses for prior art gain following technological effect:
the utility model provides a single face resistance spot welding device, include: a soldering turret body; the welding assembly comprises a positive welding mechanism and a negative welding mechanism which are arranged side by side, the positive welding mechanism comprises a first cylinder, a positive electrode rod and a positive electrode cap, the first cylinder is connected with one end of the positive electrode rod to drive the positive electrode rod to move in a reciprocating mode, the other end of the positive electrode rod is provided with the positive electrode cap, the negative welding mechanism comprises a second cylinder, a negative electrode rod and a negative electrode cap, the second cylinder is connected with one end of the negative electrode rod to drive the negative electrode rod to move in a reciprocating mode, and the other end of the negative electrode rod is provided with the negative electrode cap; the balance assembly comprises a third cylinder and a supporting arm, the third cylinder is arranged on the soldering turret body and connected with the supporting arm to drive the supporting arm to reciprocate, the first cylinder and the second cylinder are both connected with the third cylinder to enable the first cylinder and the second cylinder to synchronously move with the supporting arm, and one end of the supporting arm is arranged opposite to the positive electrode rod and the negative electrode rod to enable a plate to be welded to be clamped between one end of the supporting arm and the positive electrode rod and the negative electrode rod; the transformer is arranged on the welding clamp body, and the anode of the transformer is electrically connected with the positive electrode rod, and the cathode of the transformer is electrically connected with the negative electrode rod; and the first air cylinder, the second air cylinder and the third air cylinder are communicated with the air pressure control system. The closed loop of power is realized through setting up this single face resistance spot welding device of support arm, and support arm and positive electrode pole and negative electrode pole cooperation can perfectly improve welding pressure's control accuracy simultaneously, reduce robot wearing and tearing and rosin joint, provide better welding quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of an angle of the single-sided resistance spot welding device provided by the present invention;
fig. 2 is a schematic structural view of the single-sided resistance spot welding device provided by the present invention at another angle;
FIG. 3 is a schematic view of a welding mode of the single-sided resistance spot welding device provided by the present invention during single-sided welding;
FIG. 4 is a schematic view of the welding mode of the single-sided resistance spot welding device of the present invention during indirect welding;
FIG. 5 is a front view of FIG. 2;
FIG. 6 is a schematic view of the arrangement of the balancing assembly;
fig. 7 is a schematic view of the pneumatic control system provided by the present invention;
fig. 8 is a schematic structural diagram of a conventional single-sided electric welding device.
Description of reference numerals: 1. a positive electrode cap; 2. a negative electrode cap; 3. a positive electrode rod; 4. a negative electrode rod; 5. a first moving electrode arm; 6. a second moving electrode arm; 7. a first slider; 8. a second slider; 9. a first flexible connection structure; 10. a second flexible connection structure; 11. a first cylinder; 12. a second cylinder; 13. a positive conductive block; 14. a negative conductive block; 15. a transformer; 16. a water valve plate; 17. a top plate; 18. a first pressure regulating valve group; 19. a rear side plate; 20. a left hanger plate; 21. a second pressure regulating valve group; 22. a third pressure regulating valve group; 23. a left caliper body side plate; 24. a third cylinder; 25. a front mounting plate; 26. a support plate; 27. a first slide rail; 28. a second slide rail; 29. a first limit pin; 30. a support arm; 31. a right caliper body side plate; 32. an electrical box; 33. a signal plug; 34. a first direction changing valve; 35. a right hanger plate; 36. a front baffle; 37. a tailgate; 38. a second cushion block; 39. a fixed seat; 40. a support bar; 41. a rear mounting plate; 42. a second limit pin; 43. a third piston rod; 44. a spring; 45. a second directional control valve; 46. a first cushion block; 47. welding spots; 48. welding a plate; 49. lower welding the plate; 50. a gas source; 51. a muffler; 52. a one-way throttle valve; 53. a pressure reducing valve; 54. a welding robot; 55. a welding clamp.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a realize the closed loop of power to can perfect improvement welding pressure's control accuracy, provide the single face resistance spot welding device of better welding quality.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 8, the present embodiment provides a single-sided resistance spot welding apparatus including: a soldering turret body; the welding assembly comprises a positive welding mechanism and a negative welding mechanism which are arranged side by side, the positive welding mechanism comprises a first cylinder 11, a positive electrode rod 3 and a positive electrode cap 1, the first cylinder 11 is connected with one end of the positive electrode rod 3 to drive the positive electrode rod 3 to move in a reciprocating mode, the other end of the positive electrode rod 3 is provided with the positive electrode cap 1, the negative welding mechanism comprises a second cylinder 12, a negative electrode rod 4 and a negative electrode cap 2, the second cylinder 12 is connected with one end of the negative electrode rod 4 to drive the negative electrode rod 4 to move in a reciprocating mode, and the other end of the negative electrode rod 4 is provided with the negative electrode cap 2; the balance assembly comprises a third air cylinder 24 and a supporting arm 30, the third air cylinder 24 is arranged on the welding clamp body, the third air cylinder 24 is connected with the supporting arm 30 to drive the supporting arm 30 to reciprocate, the first air cylinder 11 and the second air cylinder 12 are both connected with the third air cylinder 24 to enable the first air cylinder 11 and the second air cylinder 12 to synchronously move with the supporting arm 30, and one end of the supporting arm 30 is arranged opposite to the positive electrode rod 3 and the negative electrode rod 4 to enable a plate to be welded to be clamped between one end of the supporting arm 30 and the positive electrode rod 3 and the negative electrode rod 4; the transformer 15 is arranged on the welding clamp body, and the anode of the transformer is electrically connected with the positive electrode rod 3, and the cathode of the transformer is electrically connected with the negative electrode rod 4; and the first air cylinder 11, the second air cylinder 12 and the third air cylinder 24 are all communicated with the air pressure control system. Specifically, the end face of the positive electrode cap 1 is of an arc surface structure, the center of the arc surface is of a plane structure, and the end face of the negative electrode cap 2 is of a plane. The negative electrode cap 2 is a copper woven mat. Through setting up this single face resistance spot welding device of support arm 30 and realizing the closed loop of power, support arm 30 can perfectly improve welding pressure's control accuracy with positive electrode pole 3 and the cooperation of negative electrode pole 4 simultaneously, reduces robot wearing and tearing and rosin joint, provides better welding quality.
Further, in order to facilitate clamping of the plates to be welded, the end of the support arm 30 opposite to the positive electrode rod 3 and the negative electrode rod 4 is provided with a first stopper pin 29.
In the specific use process, the plates to be welded are arranged between the first limiting pin 29 and the positive electrode rod 3 and the negative electrode rod 4, the air pressure control system controls the air supply of the air source 50, the first air cylinder 11 drives the positive electrode rod 3 to move towards the plates to be welded, the second air cylinder 12 drives the negative electrode rod 4 to move towards the plates to be welded, the third air cylinder 24 drives the first limiting pin 29 to move towards the plates to be welded, and after the positive electrode cap 1, the negative electrode cap 2 and the first limiting pin 29 are all in contact with the plates to be welded, welding operation can be conducted, and in order to prevent the first limiting pin 29 from causing damage to the plates to be welded, the first cushion block 46 is arranged between the first limiting pin 29 and the plates to be welded. As shown in fig. 3, during single-side welding, the positive electrode cap 1 contacts the upper welding plate 48, the negative electrode cap 2 contacts the upper welding plate 48, and the welding point 47 is located on the positive electrode cap 1 side; as shown in fig. 4, in the indirect welding, the positive electrode cap 1 contacts the upper welding plate 48, the negative electrode cap 2 contacts the lower welding plate 49, and the welding point 47 is located on the positive electrode cap 1 side.
It should be noted that while the third cylinder 24 drives the supporting arm 30 to move, the first cylinder 11 and the second cylinder 12 move synchronously, but the stroke of the third cylinder 24 is far smaller than the strokes of the first cylinder 11 and the second cylinder 12, the movement of the supporting arm 30 does not affect the contact between the positive electrode cap 1 and the negative electrode cap 2 and the plate to be welded, and the stress of the supporting arm 30 is coupled with the stress of the positive electrode rod 3 and the negative electrode rod 4 by connecting the first cylinder 11, the second cylinder 12 and the supporting arm 30 with the third cylinder 24, so that the single-sided resistance spot welding device forms a force closed loop.
In another embodiment of the present invention, specifically, the first cylinder 11 includes a first cylinder body and a first piston rod slidably installed inside the first cylinder body, the second cylinder 12 includes a second cylinder body and a second piston rod slidably installed inside the second cylinder body, the third cylinder 24 includes a third cylinder body and two third piston rods 43 parallel to each other, the third cylinder body slidably installed on the two third piston rods 43, both ends of each third piston rod 43 are all fixedly connected to the welding tongs body, the third cylinder body is fixedly connected to the first cylinder body, the second cylinder body and the support arm 30, one end of the first piston rod is connected to one end of the positive electrode rod 3, one end of the second piston rod is connected to one end of the negative electrode rod 4, and the first cylinder body, the second cylinder body and the third cylinder body are all communicated to the air pressure control system.
In another embodiment of the present invention, as shown in fig. 1 and 2, the soldering turret body includes a left side plate, a right side plate, a back side plate 19, a front mounting plate 25, a back mounting plate 41 and a top plate 17, the left side plate and the right side plate are disposed oppositely, the back side plate 19, the front mounting plate 25, the back mounting plate 41 is disposed between the left side plate and the right side plate, and the two sides opposite to the back side plate 19, the two sides opposite to the front mounting plate 25, and the two sides opposite to the back mounting plate 41 are equally divided into two sides perpendicular to the left side plate and the right side plate, and are fixedly connected to the left side plate and the right side plate, the top plate 17 is disposed on the top of the left side plate and the right side plate, the left side plate, the right side plate, the back side plate 19 and the top plate 17 enclose an installation cavity, the transformer 15 is disposed on the top plate 17, the back, The second cylinder 12 and the third cylinder 24 are disposed in the mounting cavity, and two ends of the third piston rod 43 are respectively fixedly connected with the front mounting plate 25 and the rear mounting plate 41. Specifically, the left side board includes the left hanger board 20 and the left pincers body curb plate 23 that set up from top to bottom, and the right side board includes the right hanger board 35 and the right pincers body curb plate 31 that set up from top to bottom, and preceding mounting panel 25 and back mounting panel 41 all are connected with left pincers body curb plate 23 and right pincers body curb plate 31 fixed connection, and posterior lateral plate 19 and roof 17 all are connected with left hanger board 20 and right hanger board 35, and first cylinder 11 and second cylinder 12 set up between left hanger board 20 and right hanger board 35, and third cylinder 24 sets up between left pincers body curb plate 23 and right pincers body curb plate 31.
In another embodiment of the present invention, as shown in fig. 6, in order to avoid the excessive impact force of the third cylinder 24 during operation, the balance assembly further includes a fixing seat 39, a supporting rod 40 and a spring 44, the first cylinder, the second cylinder and the third cylinder are all fixedly connected to the fixing seat 39, a through hole is provided on the fixing seat 39, one end of the supporting rod 40 is slidably installed in the through hole, the other end of the supporting rod is fixedly connected to the soldering turret body, the spring 44 is sleeved on the supporting rod 40, one end of the spring 44 abuts against the fixing seat 39, the other end of the spring abuts against the soldering turret body, and the spring 44 plays a role of buffering. Specifically, one end of the support rod 40 is fixedly connected to the rear mounting plate 41.
Further, a second limit pin 42 for limiting the movement of the fixing seat 39 is disposed on the front mounting plate 25.
In another embodiment of the present invention, in order to ensure the stability of the movement of the positive electrode rod 3 and the negative electrode rod 4, the single-sided resistance spot welding device further includes a first slider 7, a first movable electrode arm 5, a second slider 8 and a second movable electrode arm 6, a supporting plate 26 is provided on the fixing base 39, a first sliding rail 27 and a second sliding rail 28 are provided on the supporting plate 26, the first movable electrode arm 5 is fixedly connected to the first slider 7, the first slider 7 is slidably mounted on the first sliding rail 27, one end of the first movable electrode arm 5 is connected to the first piston rod, the other end is connected to one end of the positive electrode rod 3, the second movable electrode arm 6 is fixedly connected to the second slider 8, the second slider 8 is slidably mounted on the second sliding rail 28, one end of the second movable electrode arm 6 is connected to the second piston rod, and the other end is connected to one end of the negative electrode rod 4. Specifically, the support plate 26 is provided with a second cushion block 38, the front baffle plate 36 and the rear baffle plate 37 fixed to the support plate 26 are arranged in front of and behind the second cushion block 38, and the first cylinder 11 and the second cylinder 12 are both supported on the second cushion block 38 and are both clamped between the front baffle plate 36 and the rear baffle plate 37.
Further, a positive conductive block 13 is arranged at the positive electrode of the transformer 15, a negative conductive block 14 is arranged at the negative electrode of the transformer 15, the positive conductive block 13 is connected with the first slider 7 through a first soft connection structure 9, the negative conductive block 14 is connected with the second slider 8 through a second soft connection structure 10, and the first soft connection structure 9, the second soft connection structure 10, the first slider 7, the second slider 8, the first movable electrode arm 5 and the second movable electrode arm 6 are all made of conductive materials. Optionally, the first flexible connecting structure 9 and the second flexible connecting structure 10 are connecting ropes made of conductive materials.
In another embodiment of the present invention, as shown in fig. 7, the air pressure control system includes an air source 50, a first directional valve 34 and a second directional valve 45, the air source 50 is communicated with the first directional valve 34 and the second directional valve 45, the first directional valve 34 is communicated with the first cylinder body through a first pressure regulating valve set 18, and the second directional valve 45 is communicated with the second cylinder body and the third cylinder body through a second pressure regulating valve set 21 and a third pressure regulating valve set 22. The exhaust ports of the first direction valve 34 and the second direction valve 45 are each provided with a muffler 51.
Specifically, the first direction valve 34 and the second direction valve 45 are both fixed on the right hanger plate 35, the first direction valve 34 and the second direction valve 45 are both two-position five-way direction valves, and both of the two valves include an A port, a B port, a P port and a T portMouth and P1The first pressure regulating valve group 18, the second pressure regulating valve group 21 and the third pressure regulating valve group 22 respectively comprise a one-way throttle valve 52 and a pressure reducing valve 53; the A port of the first change valve 34 is communicated with the rodless cavity of the first cylinder body through a pressure reducing valve 53, the B port is communicated with the rod cavity of the first cylinder body through a one-way throttle valve 52, the T port is communicated with an air source 50, and the P port are communicated1The ports each communicate with a muffler 51; the A port of the second reversing valve 45 is communicated with the rodless cavity of the second cylinder body through a pressure reducing valve 53, the B port is communicated with the rod cavity of the second cylinder body through a one-way throttle valve 52, the T port is communicated with an air source 50, and the P port are communicated1The ports are respectively communicated with a muffler 51, meanwhile, the A port of the second reversing valve 45 is communicated with the air inlet of the third cylinder body through a one-way throttle valve 52 and a pressure reducing valve 53 in sequence, and the air outlet of the third cylinder body is communicated with the B port of the second reversing valve 45.
In another embodiment of the present invention, as shown in fig. 2, the single-sided resistance spot welding device further includes an electrical box 32 disposed on the welding clamp body, and the electrical box 32 is provided with a signal plug 33 for electrically connecting with a signal line. Specifically, the electrical box 32 is provided on the right hanger plate 35.
In a specific use process, all signal wires can be connected to the signal plug 33 in the electrical box 32, so that the electrical signal wires of the device are neat and beautiful.
In another embodiment of the present invention, a water valve plate 16 is disposed on the transformer 15, and the water valve plate 16 is used for water cooling of the single-sided resistance spot welding device.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. A single-sided resistance spot welding apparatus, comprising:
a soldering turret body;
the welding assembly comprises a positive welding mechanism and a negative welding mechanism which are arranged side by side, the positive welding mechanism comprises a first cylinder, a positive electrode rod and a positive electrode cap, the first cylinder is connected with one end of the positive electrode rod to drive the positive electrode rod to move in a reciprocating mode, the other end of the positive electrode rod is provided with the positive electrode cap, the negative welding mechanism comprises a second cylinder, a negative electrode rod and a negative electrode cap, the second cylinder is connected with one end of the negative electrode rod to drive the negative electrode rod to move in a reciprocating mode, and the other end of the negative electrode rod is provided with the negative electrode cap;
the balance assembly comprises a third cylinder and a supporting arm, the third cylinder is arranged on the welding tongs body and is connected with the supporting arm to drive the supporting arm to reciprocate, the first cylinder and the second cylinder are both connected with the third cylinder so that the first cylinder and the second cylinder can synchronously move with the supporting arm, and one end of the supporting arm is arranged opposite to the positive electrode rod and the negative electrode rod so that a plate to be welded can be clamped between one end of the supporting arm and the positive electrode rod and the negative electrode rod;
the transformer is arranged on the welding clamp body, and the positive electrode of the transformer is electrically connected with the positive electrode rod, and the negative electrode of the transformer is electrically connected with the negative electrode rod;
and the first air cylinder, the second air cylinder and the third air cylinder are communicated with the air pressure control system.
2. The single-sided resistance spot welding device according to claim 1, wherein the first cylinder comprises a first cylinder body and a first piston rod slidably mounted inside the first cylinder body, the second cylinder comprises a second cylinder body and a second piston rod slidably mounted inside the second cylinder body, the third cylinder comprises a third cylinder body and two third piston rods parallel to each other, the third cylinder body is slidably mounted on the two third piston rods, two ends of each third piston rod are fixedly connected with the welding tongs body, the third cylinder body is fixedly connected with the first cylinder body, the second cylinder body and the support arm, one end of the first piston rod is connected with one end of the positive electrode rod, one end of the second piston rod is connected with one end of the negative electrode rod, and the first cylinder body, The second cylinder body and the third cylinder body are communicated with the air pressure control system.
3. The single-sided resistance spot welding device according to claim 2, wherein the welding tongs body comprises a left plate, a right plate, a rear plate, a front mounting plate, a rear mounting plate and a top plate, the left plate and the right plate are oppositely arranged, the rear plate, the front mounting plate and the rear mounting plate are arranged between the left plate and the right plate, the two opposite sides of the rear plate, the two opposite sides of the front mounting plate and the two opposite sides of the rear mounting plate are respectively perpendicular to the left plate and the right plate and are fixedly connected with the left plate and the right plate, the top plate is arranged at the top ends of the left plate and the right plate and is fixedly connected with the left plate and the right plate, the left plate, the right plate, the rear plate and the top plate enclose an installation cavity, and the transformer is arranged on the top plate, the posterior lateral plate is used for being connected with welding robot, first cylinder the second cylinder with the third cylinder set up in the installation cavity, just the both ends of third piston rod respectively with preceding mounting panel with posterior mounting panel fixed connection.
4. The single-sided resistance spot welding device according to claim 3, wherein the balance assembly further comprises a fixing seat, a support rod and a spring, the first cylinder, the second cylinder and the third cylinder are all fixedly connected with the fixing seat, a through hole is formed in the fixing seat, one end of the support rod is slidably mounted in the through hole, the other end of the support rod is fixedly connected with the welding clamp body, the spring is sleeved on the support rod, and one end of the spring abuts against the fixing seat and the other end of the spring abuts against the welding clamp body.
5. The single-sided resistance spot welding device according to claim 4, further comprising a first slider, a first movable electrode arm, a second slider and a second movable electrode arm, wherein the fixing base is provided with a supporting plate, the supporting plate is provided with a first sliding rail and a second sliding rail, the first movable electrode arm is fixedly connected with the first slider, the first slider is slidably mounted on the first sliding rail, one end of the first movable electrode arm is connected with the first piston rod, the other end of the first movable electrode arm is connected with one end of the positive electrode rod, the second movable electrode arm is fixedly connected with the second slider, the second slider is slidably mounted on the second sliding rail, one end of the second movable electrode arm is connected with the second piston rod, and the other end of the second movable electrode arm is connected with one end of the negative electrode rod.
6. The single-sided resistance spot welding apparatus according to claim 5, wherein the positive electrode of the transformer is provided with a positive conductive block, the negative electrode of the transformer is provided with a negative conductive block, the positive conductive block is connected with the first slider through a first flexible connection structure, the negative conductive block is connected with the second slider through a second flexible connection structure, and the first flexible connection structure, the second flexible connection structure, the first slider, the second slider, the first moving electrode arm and the second moving electrode arm are made of a conductive material.
7. The single-sided resistance spot welding device according to claim 2, wherein the air pressure control system comprises an air source, a first reversing valve and a second reversing valve, the air source is communicated with the first reversing valve and the second reversing valve, the first reversing valve is communicated with the first cylinder body through a first pressure regulating valve group, and the second reversing valve is communicated with the second cylinder body and the third cylinder body through a second pressure regulating valve group and a third pressure regulating valve group respectively.
8. The single-sided resistance spot welding apparatus according to claim 7, wherein the exhaust ports of the first and second direction changing valves are each provided with a muffler.
9. The single-sided resistance spot welding apparatus according to claim 1, further comprising an electrical box provided on the electrode holder body, the electrical box being provided with a signal plug for electrical connection with a signal wire.
10. The single-sided resistance spot welding apparatus according to claim 1, wherein a water valve plate is provided on the transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921642633.7U CN210789635U (en) | 2019-09-29 | 2019-09-29 | Single-sided resistance spot welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921642633.7U CN210789635U (en) | 2019-09-29 | 2019-09-29 | Single-sided resistance spot welding device |
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| CN110497070A (en) * | 2019-09-29 | 2019-11-26 | 韦孚（杭州）精密机械有限公司 | A kind of single-side resistance spot welding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110497070A (en) * | 2019-09-29 | 2019-11-26 | 韦孚（杭州）精密机械有限公司 | A kind of single-side resistance spot welding device |
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