High-precision adjustable dual-purpose pneumatic clamping welding pliers
By setting multiple rotating shafts and cylinders in the clamping welding pliers, precise control of the electrodes is achieved, and the welding quality problems caused by the uncoaxial electrodes in the prior art are solved, which significantly improves the welding quality and aesthetics.
Patent Information
- Application Number
- CN202421777381.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-25
AI Technical Summary
In the prior art, the two electrodes of the clamping pliers suitable for long gap welding are prone to be uncoaxial, resulting in uneven stress on the electrodes during welding and uneven nucleus forming, which affects the welding quality and aesthetics.
A high-precision adjustable dual-purpose pneumatic clamp welding pliers are designed. By setting the first rotating shaft, the second rotating shaft and the third rotating shaft, combined with the fixed end and the output end of the cylinder, precise control of the first electrode and the second electrode is achieved to ensure that they always remain coaxial during welding.
Through this design, the problems of uneven force and uneven core forming during welding are avoided, and the welding quality and aesthetics are significantly improved.
Smart Images
Figure CN222818128U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of resistance welding, in particular to a high-precision adjustable dual-purpose pneumatic welding clamp. Background Art
[0002] Resistance welding is a method of welding by applying pressure through electrodes after the workpieces are combined, and using the resistance heat generated by the current passing through the contact surface of the joint and the adjacent area. Resistance welding uses the resistance heat effect generated by the current flowing through the contact surface of the workpiece and the adjacent area to heat it to a molten or plastic state, so that it forms a metal bond. There are four main resistance welding methods, namely spot welding, seam welding, projection welding, and butt welding.
[0003] When resistance welding two thin plates, it is necessary to first perform electric welding on the joint of the two thin plates. Since the gap between the two thin plates is generally long, it is often necessary to extend two electrodes to the center of the joint for spot welding. Therefore, in the prior art, the welding clamps suitable for such long gap spot welding generally adopt a manual welding clamp with a scissor-type structure, which is opened or clamped by a spring, and the operator holds the end of the welding clamp away from the electrode for control.
[0004] Although the above-mentioned welding clamp has a simple structure, there is usually a certain gap at the rotating shaft for the two welding clamp arms to rotate smoothly, which leads to a certain deviation when the two electrodes are in contact, causing the electrodes to deflect and the two relative electrodes to be non-coaxial, so that the workpiece and the electrode end surface cannot remain parallel, resulting in uneven force on the electrodes during welding, uneven formation of the weld nugget, and affecting the welding quality and appearance. Moreover, this situation will become more and more serious after long-term use. Utility Model Content
[0005] The utility model aims to provide a high-precision adjustable dual-purpose pneumatic welding clamp to solve the problem in the prior art that the two electrodes of the welding clamp suitable for long gap welding are easily not coaxial, resulting in uneven force on the electrodes during welding, uneven formation of the weld nugget, and affecting the welding quality and aesthetics.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A high-precision adjustable dual-purpose pneumatic welding clamp comprises a first clamp arm and a second clamp arm, the first clamp arm and the second clamp arm are rotatably connected at opposite sides via a first rotating shaft, the ends of one end of the first clamp arm and the second clamp arm are respectively provided with a first electrode and a second electrode aligned with each other, a cylinder is further provided between the first clamp arm and the second clamp arm, the fixed end of the cylinder is rotatably connected to the first clamp arm via a second rotating shaft, and the output end of the cylinder is rotatably connected to the second clamp arm via a third rotating shaft.
[0008] A further technical solution is that two parallel first connecting plates are provided on a protrusion on one side of the first clamp arm toward the second clamp arm, and first rotating holes aligned with each other are provided on the two first connecting plates; a second connecting plate is provided on the protrusion of the second clamp arm toward the first clamp arm, and second rotating holes running through both sides are provided on the second connecting plate; the middle part of the first rotating shaft is rotatably provided in the second rotating hole, the second connecting plate is placed between the two first connecting plates, and both ends of the first rotating shaft are respectively rotatably provided in the two first rotating holes.
[0009] A further technical solution is that a fixing cap is provided at the position of the first rotating hole on the side of the two first connecting plates that are away from each other, and a limiting groove connected to the first rotating hole is provided on the fixing cap, and the two ends of the first rotating shaft are respectively rotatably set in the limiting grooves of the two fixing caps.
[0010] A further technical solution is that a stabilizing ring is sleeved in the first rotating hole of the first rotating shaft.
[0011] A further technical solution is that a third connecting plate is provided at the fixed end of the cylinder, a third rotating hole is provided on the third connecting plate and passes through both sides, the middle part of the second rotating shaft is rotatably provided in the third rotating hole, a first rotating groove is recessed on one side of the first clamping arm facing the second clamping arm, the third connecting plate is movably provided in the first rotating groove, and both ends of the second rotating shaft are rotatably connected to the groove walls on opposite sides of the first rotating groove.
[0012] A further technical solution is that a fourth connecting plate is provided at the output end of the cylinder, a fourth rotating hole is provided on the fourth connecting plate and passes through both sides, the middle part of the third rotating shaft is rotatably provided in the fourth rotating hole, a second rotating groove is recessed on one side of the second clamping arm facing the first clamping arm, the fourth connecting plate is movably provided in the second rotating groove, and both ends of the third rotating shaft are respectively rotatably connected to the groove walls on opposite sides of the second rotating groove.
[0013] A further technical solution is that the second clamping arm includes a main arm and a reinforcing arm, the main arm is arranged on one side of the reinforcing arm, and the second connecting piece and the second rotating groove are both arranged on the other side of the reinforcing arm.
[0014] A further technical solution is that a first connection seat is provided at one end of the first clamping arm away from the first electrode, and a handle connection plate is provided at one side of the first connection seat away from the first clamping arm.
[0015] A further technical solution is that a second connecting socket for connecting to a mechanical arm is provided on the lower side of the first clamping arm away from one end of the first electrode.
[0016] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. The first clamp arm and the second clamp arm rotate around the first rotating shaft, which can separate or contact the first electrode and the second electrode, so as to heat and weld the welding point during welding; 2. By setting a cylinder, the gap between the first electrode and the second electrode and the force during contact can be accurately controlled by the cylinder, which improves the accuracy of the contact point pressure compared with traditional manual control or spring control; 3. By setting a second rotating shaft and a third rotating shaft, it can cooperate with the first rotating shaft and be controlled by three axis points. When the cylinder is lifted and lowered to drive the first clamp arm and the second clamp arm to open and close, they will be displaced in the same plane without deflection. In this way, the first electrode and the second electrode are always in a coaxial state when in contact, thereby avoiding uneven force during welding, uneven molten core formation, and affecting welding quality and aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 The utility model is a schematic diagram of the whole of a high-precision adjustable dual-purpose pneumatic welding clamp.
[0018] Figure 2 The utility model is a cylinder schematic diagram of a high-precision adjustable dual-purpose pneumatic welding clamp.
[0019] Figure 3 The utility model is a schematic diagram of the second clamping arm of a high-precision adjustable dual-purpose pneumatic welding clamp.
[0020] Figure 4 The utility model is a schematic diagram of a first rotating shaft and a first connecting piece of a high-precision adjustable dual-purpose pneumatic welding clamp.
[0021] Figure 5 The utility model is a schematic diagram of a first rotating shaft and a fixing cap of a high-precision adjustable dual-purpose pneumatic welding clamp.
[0022] Icons: 1-first clamping arm, 2-second clamping arm, 3-first rotating shaft, 4-first electrode, 5-second electrode, 6-cylinder, 7-second rotating shaft, 8-third rotating shaft, 9-first connecting plate, 10-first rotating hole, 11-second connecting plate, 12-second rotating hole, 13-fixing cap, 14-limiting groove, 15-stabilizing ring, 16-third connecting plate, 17-third rotating hole, 18-first rotating groove, 19-fourth connecting plate, 20-fourth rotating hole, 21-second rotating groove, 22-first connecting seat, 23-handle connecting plate, 24-second connecting seat, 25-first mounting tube, 26-second mounting tube, 27-main arm, 28-reinforcement arm, 29-insulating layer. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0024] Figures 1 to 5 Shown is an embodiment of the utility model.
[0025] Embodiment 1:
[0026] like Figure 1-3 As shown, a high-precision adjustable dual-purpose pneumatic clamp welding pliers includes a first clamp arm 1 and a second clamp arm 2, the first clamp arm 1 and the second clamp arm 2 are connected to each other by a first rotating shaft 3 at opposite sides, and the ends of the first clamp arm 1 and the second clamp arm 2 are respectively provided with a first electrode 4 and a second electrode 5 aligned with each other, and a cylinder 6 is also provided between the first clamp arm 1 and the second clamp arm 2, and the fixed end of the cylinder 6 is connected to the first clamp arm 1 by a second rotating shaft 7, and the output end of the cylinder 6 is connected to the second clamp arm 2 by a third rotating shaft 8. The first clamp arm 1 and the second clamp arm 2 rotate around the first rotating shaft 3, so that the first electrode 4 and the second electrode 5 can be separated or contacted, so as to heat and weld the welding point during welding. By providing the cylinder 6, the gap between the first electrode 4 and the second electrode 5 and the force during contact can be accurately controlled by the cylinder 6, and the accuracy of the contact point pressure is improved compared with traditional manual control or spring control. By setting the second rotating shaft 7 and the third rotating shaft 8, they can cooperate with the first rotating shaft 3, and through the control of three axis points, when the cylinder 6 is lifted and lowered to drive the first clamping arm 1 and the second clamping arm 2 to open and close, they will be displaced in the same plane without deflection, so that the first electrode 4 and the second electrode 5 are always in a coaxial state when in contact, thus avoiding the problem of uneven force during welding, uneven nugget formation, and affecting the welding quality and aesthetics. The first mounting tube 25 and the second mounting tube 26 are respectively provided at the ends of the first clamping arm 1 and the second clamping arm 2, and the first electrode 4 and the second electrode 5 are respectively installed in the first mounting tube 25 and the second mounting tube 26, so that it is easy to replace the first electrode 4 or the second electrode 5. The first motor and the second electrode 5 are connected to an external power supply for power supply.
[0027] The first clamp arm 1 is provided with two parallel first connecting pieces 9 protruding from one side facing the second clamp arm 2, and the two first connecting pieces 9 are provided with mutually aligned first rotating holes 10, and the second clamp arm 2 is provided with a second connecting piece 11 protruding from the first clamp arm 1, and the second connecting piece 11 is provided with second rotating holes 12 penetrating both sides; the middle part of the first rotating shaft 3 is rotatably arranged in the second rotating hole 12, the second connecting piece 11 is placed between the two first connecting pieces 9, and the two ends of the first rotating shaft 3 are respectively rotatably arranged in the two first rotating holes 10. In this arrangement, by clamping one second connecting piece 11 between two first connecting pieces 9 for rotation, it is possible to prevent misalignment during rotation, so that the first clamp arm 1 and the second clamp arm 2 will not be misaligned.
[0028] Embodiment 2:
[0029] Based on the above embodiments, Figure 4 , 5 As shown, a fixing cap 13 is provided at the position of the first rotating hole 10 on the side away from each other of the two first connecting pieces 9, and a limiting groove 14 connected to the first rotating hole 10 is provided on the fixing cap 13, and the two ends of the first rotating shaft 3 are respectively rotatably arranged in the limiting grooves 14 of the two fixing caps 13. By providing the fixing cap 13, it is easy to install and disassemble the first rotating shaft 3, and the edge of the first fixing cap 13 is provided with a connecting flange, which is fixed to the first connecting piece 9 by screws. And with the help of the limiting grooves 14 of the two fixing caps 13, the first rotating shaft 3 is always in the first rotating hole 10 and the second rotating hole 12, which improves the stability of rotation.
[0030] The first rotating shaft 3 is sleeved with a stabilizing ring 15 in the first rotating hole 10. By providing the stabilizing ring 15, it can serve as an intermediate transmission between the first rotating shaft 3 and the first rotating hole 10, and the inner and outer walls of the stabilizing ring 15 can fit the first rotating shaft 3 and the first rotating hole 10 more closely, thereby improving the rotation stability and avoiding vibration or misalignment caused by the gap during the rotation process. The stabilizing ring 15 can also use a bearing, thereby improving the rotation smoothness while improving the rotation stability.
[0031] Embodiment 3:
[0032] Based on the above embodiments, Figure 2As shown, the fixed end of the cylinder 6 is provided with a third connecting piece 16, and the third connecting piece 16 is provided with a third rotating hole 17 that passes through both sides. The middle part of the second rotating shaft 7 is rotatably arranged in the third rotating hole 17. The first clamping arm 1 is provided with a first rotating groove 18 on one side facing the second clamping arm 2. The third connecting piece 16 is movably arranged in the first rotating groove 18, and the two ends of the second rotating shaft 7 are respectively connected to the groove walls on the opposite sides of the first rotating groove 18 for rotation. By providing the first rotating groove 18, the groove walls on the opposite sides of the first rotating groove 18 can be fitted to the opposite sides of the third connecting piece 16. For example, when the welding clamp is placed forward and backward, the groove walls on the left and right sides of the first rotating groove 18 and the left and right sides of the third connecting piece 16 are slidably fitted. When the cylinder 6 is raised and lowered, because the angle of the first clamping arm 1 and the second clamping arm 2 changes, the third connecting piece 16 will swing forward and backward around the second rotating shaft 7, so that the left and right movement of the third connecting piece 16 during the swinging process can be effectively avoided, causing the first clamping arm 1 and the second clamping arm 2 to be misaligned left and right, thereby causing the first electrode 4 and the second electrode 5 to be misaligned left and right. The left and right groove walls of the first rotating groove 18 are provided with a fifth rotating hole connected to the left and right sides of the first clamping arm 1, so that both ends of the second rotating shaft 7 can be installed in the fifth rotating hole, which is convenient for disassembly and installation of the fifth rotating hole.
[0033] The output end of the cylinder 6 is provided with a fourth connecting piece 19, and a fourth rotating hole 20 is provided on the fourth connecting piece 19, which passes through both sides. The middle part of the third rotating shaft 8 is rotatably arranged in the fourth rotating hole 20, and the second clamping arm 2 is provided with a second rotating groove 21 on one side facing the first clamping arm 1. The fourth connecting piece 19 is movably arranged in the second rotating groove 21, and the two ends of the third rotating shaft 8 are respectively connected to the groove walls on the opposite sides of the second rotating groove 21. By providing the second rotating groove 21, the groove walls on the opposite sides of the second rotating groove 21 can be fitted to the opposite sides of the fourth connecting piece 19. For example, when the welding clamp is placed forward and backward, the groove walls on the left and right sides of the second rotating groove 21 and the left and right sides of the fourth connecting piece 19 are slidably fitted. When the cylinder 6 is raised and lowered, because the angle of the first clamping arm 1 and the second clamping arm 2 changes, the fourth connecting piece 19 will swing forward and backward around the third rotating shaft 8, so that the left and right movement of the fourth connecting piece 19 during the swinging process can be effectively avoided, causing the first clamping arm 1 and the second clamping arm 2 to be misaligned left and right, thereby causing the first electrode 4 and the second electrode 5 to be misaligned left and right. The left and right groove walls of the second rotating groove 21 are provided with a sixth rotating hole connected with the left and right sides of the second clamping arm 2, so that both ends of the third rotating shaft 8 can be installed in the sixth rotating hole, which is convenient for disassembly and installation of the sixth rotating hole.
[0034] The second clamp arm 2 includes a main arm 27 and a reinforcement arm 28. The main arm 27 is arranged on one side of the reinforcement arm 28, and the second connecting piece 11 and the second rotating groove 21 are both arranged on the other side of the reinforcement arm 28. By setting the reinforcement arm 28, a good support effect can be provided to the main arm 27 to prevent the main arm 27 from bending during use. An insulating layer 29 is arranged between the main arm 27 and the reinforcement arm 28 to prevent the main arm 27 and the reinforcement arm 28 from being electrically non-conductive, which can effectively prevent the connection between the first clamp arm 1 and the second clamp arm 2 from being electrically conductive, resulting in the first electrode 4 and the second electrode 5 not being properly welded. The main arm 27 and the reinforcement arm 28 are fixed with bolts with insulating sleeves, which can not only meet the connection between the main arm 27 and the reinforcement arm 28, but also prevent the main arm 27 and the reinforcement arm 28 from being electrically conductive.
[0035] The first clamp arm 1 is provided with a first connection seat 22 at one end away from the first electrode 4, and a handle connection plate 23 is provided at one side of the first connection seat 22 away from the first clamp arm 1. By providing the first connection seat 22 and the handle connection plate 23, the welding machine can be manually used by installing a handle that is convenient for holding, and control buttons for controlling the cylinder 6 and the power supply are installed on the handle, so that the operator can perform welding by manual control.
[0036] A second connection seat 24 for connecting to a robot arm is provided at the lower side of the first clamp arm 1 away from the first electrode 4. By providing the second connection seat 24, the welding clamp is installed on the robot arm, so that it is convenient to perform automated welding through system control, and the welding clamp is driven to move by the system control of the robot arm movement, and by the system control. By installing the handle connection plate or the second connection seat 24, different operation modes can be adopted, which can be adjusted manually or automatically.
[0037] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.
Claims
1. A high-precision adjustable dual-purpose pneumatic welding clamp, comprising a first clamp arm (1) and a second clamp arm (2), wherein the first clamp arm (1) and the second clamp arm (2) are rotatably connected at opposite sides via a first rotating shaft (3), and the ends of one end of the first clamp arm (1) and the second clamp arm (2) are respectively provided with a first electrode (4) and a second electrode (5) aligned with each other, characterized in that: A cylinder (6) is also provided between the first clamping arm (1) and the second clamping arm (2); a fixed end of the cylinder (6) is rotationally connected to the first clamping arm (1) via a second rotating shaft (7); and an output end of the cylinder (6) is rotationally connected to the second clamping arm (2) via a third rotating shaft (8).
2. A high-precision adjustable dual-purpose pneumatic welding clamp according to claim 1, characterized in that: The first clamping arm (1) is provided with two parallel first connecting pieces (9) protruding toward one side of the second clamping arm (2), and the two first connecting pieces (9) are provided with mutually aligned first rotation holes (10); the second clamping arm (2) is provided with a second connecting piece (11) protruding toward the first clamping arm (1), and the second connecting piece (11) is provided with second rotation holes (12) penetrating through both sides; The middle part of the first rotating shaft (3) is rotatably disposed in the second rotating hole (12), the second connecting piece (11) is disposed between the two first connecting pieces (9), and the two ends of the first rotating shaft (3) are rotatably disposed in the two first rotating holes (10) respectively.
3. A high-precision adjustable dual-purpose pneumatic welding clamp according to claim 2, characterized in that: A fixing cap (13) is provided at the position of the first rotating hole (10) on the side of the two first connecting pieces (9) that are away from each other, and a limiting groove (14) is provided on the fixing cap (13) and is connected to the first rotating hole (10). The two ends of the first rotating shaft (3) are respectively rotatably arranged in the limiting grooves (14) of the two fixing caps (13).
4. A high-precision adjustable dual-purpose pneumatic welding clamp according to claim 2, characterized in that: The first rotating shaft (3) is sleeved with a stabilizing ring (15) in the first rotating hole (10).
5. The high-precision adjustable dual-purpose pneumatic welding clamp according to claim 2 is characterized in that: A third connecting piece (16) is provided at the fixed end of the cylinder (6), and a third rotating hole (17) is provided on the third connecting piece (16) and passes through two sides. The middle part of the second rotating shaft (7) is rotatably arranged in the third rotating hole (17). A first rotating groove (18) is recessed on one side of the first clamping arm (1) facing the second clamping arm (2), and the third connecting piece (16) is movably arranged in the first rotating groove (18). The two ends of the second rotating shaft (7) are respectively rotatably connected to the groove walls on two opposite sides of the first rotating groove (18).
6. A high-precision adjustable dual-purpose pneumatic welding clamp according to claim 5, characterized in that: A fourth connecting plate (19) is provided at the output end of the cylinder (6), and a fourth rotating hole (20) penetrating through two sides is provided on the fourth connecting plate (19), and a middle portion of the third rotating shaft (8) is rotatably arranged in the fourth rotating hole (20), and a second rotating groove (21) is recessed on one side of the second clamping arm (2) facing the first clamping arm (1), and the fourth connecting plate (19) is movably arranged in the second rotating groove (21), and two ends of the third rotating shaft (8) are rotatably connected to groove walls on opposite sides of the second rotating groove (21).
7. A high-precision adjustable dual-purpose pneumatic welding clamp according to claim 6, characterized in that: The second clamping arm (2) comprises a main arm (27) and a reinforcing arm (28); the main arm (27) is arranged on one side of the reinforcing arm (28), and the second connecting piece (11) and the second rotating groove (21) are both arranged on the other side of the reinforcing arm (28).
8. The high-precision adjustable dual-purpose pneumatic welding clamp according to claim 1, characterized in that: A first connection seat (22) is provided at one end of the first clamp arm (1) away from the first electrode (4), and a handle connection plate (23) is provided at one side of the first connection seat (22) away from the first clamp arm (1).
9. The high-precision adjustable dual-purpose pneumatic welding clamp according to claim 1, characterized in that: A second connection seat (24) for connecting to a mechanical arm is provided on the lower side of one end of the first clamping arm (1) away from the first electrode (4).