Link mechanism for X-shaped welding tongs with larger output force

Abstract

The utility model discloses a connecting rod mechanism with larger output of X-shaped welding tongs, which relates to the technical field of X-shaped welding tongs, and particularly comprises a rack, a moving electrode, a static electrode and a guide plate, moving electrode side plates are arranged on two sides of the moving electrode, the moving electrode side plates are rotatably connected with the rack through a third rotating shaft, a first rotating shaft is mounted between the two moving electrode side plates, and a second rotating shaft is mounted between the first rotating shaft and the second rotating shaft. The moving electrode side plate is provided with an open groove. The static electrodes are fixedly connected with the rack through static electrode side plates, a second rotating shaft is installed between the two static electrode side plates, and the second rotating shaft is embedded in the open groove; the first rotating shaft is embedded in a guide groove formed in a guide plate in a sleeved mode, and the guide plate is connected with the machine frame through an air cylinder. According to the connecting rod mechanism with the larger output force of the X-shaped electrode holder, under the condition that the throat depth size is the same as that of an existing electrode holder, the electrode holder is more compact in structure and smaller in size, the labor intensity of workers is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of X-type welding tongs, in particular to a connecting rod mechanism with greater output of the X-type welding tongs. Background Art

[0002] At present, the structural types of X-type resistance welding clamps are as follows Figure 1 As shown, the static electrode (2) is fixed to the frame (1), the moving electrode (4) is movably connected to the frame (1) through a rotating shaft (5), the cylinder (7) shell is connected to the frame (1), and one end of the piston rod of the cylinder (7) is connected to the moving electrode (4) through a pin (6). L1 is the length of the power arm, and L2 is the length of the resistance arm. The pressure F at the point where the moving and static electrodes clamp the welding plate (3) is (F1×L1) / L2 (F1 is the cylinder output, ignoring the mechanical efficiency). The output mechanism of this type of X-type resistance welding clamp is a lever structure. In order to meet the welding requirements of workpieces of different sizes, the throat depth of the welding clamp will increase accordingly. However, when the welding clamp throat depth required by the welding is larger, the length of L2 will also be larger. Under the condition that the pressure F remains unchanged, the length of L1 must be lengthened or the output of the cylinder F1 must be increased, that is, under the condition of the same welding pressure, the length of the power arm must be increased or the cylinder output must be increased. In this way, the volume and weight of the welding clamp are correspondingly increased, which is not conducive to lightweight design and reduces welding production efficiency. Utility Model Content

[0003] The utility model provides an X-type welding tongs connecting rod mechanism with greater output, which solves the problem proposed in the above background technology that the output mechanism of the current X-type resistance welding tongs is a lever structure, and in order to meet the welding requirements of workpieces of different sizes, the throat depth of the welding tongs will be increased accordingly. Under the condition of the same welding pressure, the length of the power arm must be increased or the cylinder output must be improved, which will correspondingly increase the volume and weight of the welding tongs and reduce the welding production efficiency.

[0004] The utility model provides the following technical solutions: an X-shaped welding clamp with a greater output connecting rod mechanism, comprising a frame, a moving electrode and a stationary electrode, moving electrode side plates are provided on both sides of the moving electrode, the moving electrode side plates are rotatably connected to the frame through a third rotating shaft, a first rotating shaft is installed between the two moving electrode side plates, and a slot is provided on the moving electrode side plates;

[0005] Static electrode side plates are provided on both sides of the static electrode, the static electrode side plates are fixedly connected to the frame, a second rotating shaft is installed between the two static electrode side plates, and the second rotating shaft is inserted in the slot;

[0006] A cylinder is fixed on one side of the frame away from the moving electrode, the piston rod of the cylinder extends between the two moving electrode side plates, a guide plate is fixed on the end of the piston rod of the cylinder, a guide groove is provided on the guide plate, and the first rotating shaft is inserted in the guide groove.

[0007] Preferably, the slot formed on the moving electrode side plate is crescent-shaped.

[0008] Preferably, the guide groove is crescent-shaped, and the guide plate is located between the second rotating shaft and the static electrode.

[0009] Preferably, the first rotating shaft is located at one end of the moving electrode side plate close to the stationary electrode, and the second rotating shaft is located at a side of the first rotating shaft close to the moving electrode.

[0010] Preferably, the distance L1 between the first rotating shaft and the second rotating shaft is the length of the power arm; the distance L2 between the second rotating shaft and the third rotating shaft is the length of the resistance arm, and the lengths of L1 and L2 are fixed.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The connecting rod mechanism of the X-type welding clamp has a greater output. Under the condition of the same welding clamp throat depth, the use of the new structure can reduce the overall volume and weight of the welding clamp, reduce the labor intensity and improve production efficiency.

[0013] 2. The connecting rod mechanism of the X-type welding clamp has a greater output. Under the condition of the same throat depth as the existing welding clamp, the welding clamp has a more compact structure and a smaller volume, which reduces the labor intensity and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the structural diagram of the current X-type resistance welding clamp.

[0015] In the figure: 1. frame; 2. static electrode; 3. welding plate; 4. moving electrode; 5. rotating shaft; 6. pin shaft; 7. cylinder.

[0016] Figure 2 The utility model discloses a schematic diagram of a connecting rod mechanism with a greater output of an X-shaped welding tong.

[0017] In the figure: 1, frame; 2, moving electrode; 3, welding plate; 4, static electrode; 5, first rotating shaft; 6, second rotating shaft; 7, guide plate; 8, third rotating shaft; 9, cylinder; 10, static electrode side plate; 11, moving electrode side plate. DETAILED DESCRIPTION

[0018] The following will be combined with 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 of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The utility model provides a connecting rod mechanism with a greater output of an X-shaped welding tong, comprising a frame 1, a moving electrode 2 and a stationary electrode 4. Moving electrode side plates 11 are provided on both sides of the moving electrode 2, and the moving electrode side plates 11 are rotatably connected to the frame 1 through a third rotating shaft 8. A first rotating shaft 5 is installed between the two moving electrode side plates 11, and a crescent-shaped groove is provided on the moving electrode side plate 11. The stationary electrode 4 and the moving electrode 2 are located on the same side of the frame 1, and stationary electrode side plates 10 are provided on both sides of the stationary electrode 4, and the stationary electrode side plates 10 are fixedly connected to the frame 1, and the first rotating shaft 5 is located at one end of the moving electrode side plate close to the stationary electrode, and a second rotating shaft 6 is installed between the two stationary electrode side plates 10, and the second rotating shaft 6 is located on the side of the first rotating shaft 5 close to the moving electrode 2, and the second rotating shaft 6 is inserted in the crescent-shaped groove. Through the setting of the groove, the second rotating shaft 6 will not interfere with the moving electrode side plate 11, and the moving electrode side plate 11 can rotate around the third rotating shaft 8.

[0020] The utility model provides an X-type welding tongs connecting rod mechanism with greater output, which also includes a guide plate 7 and a cylinder 9. The guide plate 7 is located between the two moving electrode side plates 11, and the guide plate 7 is located between the second rotating shaft 6 and the static electrode 4, the second rotating shaft 6 will not interfere with the guide plate 7, a crescent-shaped guide groove is provided on the guide plate 7, the first rotating shaft 5 is inserted in the guide groove, the guide plate 7 is fixedly connected to one end of the piston rod of the cylinder 9, and the cylinder 9 is fixed on the side of the frame 1 away from the moving electrode 2.

[0021] Through the setting of the cylinder 9, the guide plate 7 can move horizontally with the piston rod of the cylinder 9, and when the guide plate 7 moves, the first rotating shaft 5 moves along the guide groove, and the movement of the first rotating shaft 5 makes the movable electrode side plate 11 rotate around the third rotating shaft 8, that is, through the extension and retraction of the piston rod of the cylinder 9, the opening and closing of the X-type welding clamp can be controlled, and the use of the X-type welding clamp can be carried.

[0022] In the present invention, the distance L1 between the first rotating shaft 5 and the second rotating shaft 6 is the power arm length. The distance L2 between the second rotating shaft 6 and the third rotating shaft 8 is the resistance arm length, and the lengths of the two will not change with the throat depth L3 of the welding clamp. Under the condition of the same throat depth as the existing structure welding clamp, the welding clamp of the present invention has a more compact structure and a smaller volume, which reduces the labor intensity and improves the production efficiency.

[0023] In summary: when the connecting rod mechanism with greater output of the X-type welding tongs is used, if the piston rod of the cylinder 9 is Figure 2 When moving in the right direction as shown, the guide plate 7 fixed at one end of the piston rod moves horizontally to the right at the same time. When the guide plate 7 moves, the first rotating shaft 5 moves upward along the guide groove. The first rotating shaft 5 drives the moving electrode assembly composed of the moving electrode side plate 11 and the moving electrode 2 to rotate clockwise around the third rotating shaft 8. The moving electrode 2 and the static electrode 4 can clamp the welding plate 3.

[0024] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A connecting rod mechanism with a greater output of an X-shaped welding tongs, comprising a frame (1), a moving electrode (2) and a stationary electrode (4), characterized in that: Moving electrode side plates (11) are provided on both sides of the moving electrode (2), the moving electrode side plates (11) are rotatably connected to the frame (1) via a third rotating shaft (8), a first rotating shaft (5) is installed between the two moving electrode side plates (11), and a slot is provided on the moving electrode side plates (11); Static electrode side plates (10) are provided on both sides of the static electrode (4), the static electrode side plates (10) are fixedly connected to the frame (1), a second rotating shaft (6) is installed between the two static electrode side plates (10), and the second rotating shaft (6) is inserted into the slot; A cylinder (9) is fixed to the side of the frame (1) away from the moving electrode (2), and the piston rod of the cylinder (9) extends between the two moving electrode side plates (11). A guide plate (7) is fixed to the end of the piston rod of the cylinder (9), and a guide groove is provided on the guide plate (7), and the first rotating shaft (5) is inserted into the guide groove.

2. The connecting rod mechanism with greater output of X-type welding tongs according to claim 1, characterized in that: The slot formed on the moving electrode side plate (11) is crescent-shaped.

3. The connecting rod mechanism with greater output of X-type welding tongs according to claim 1, characterized in that: The guide groove is crescent-shaped, and the guide plate (7) is located between the second rotating shaft (6) and the static electrode (4).

4. The connecting rod mechanism with greater output of X-type welding tongs according to claim 1, characterized in that: The first rotating shaft (5) is located at one end of the moving electrode side plate (11) close to the stationary electrode (4), and the second rotating shaft (6) is located at a side of the first rotating shaft (5) close to the moving electrode (2).

5. The connecting rod mechanism with greater output of X-type welding tongs according to claim 1, characterized in that: The distance L1 between the first rotating shaft (5) and the second rotating shaft (6) is the length of the power arm; the distance L2 between the second rotating shaft (6) and the third rotating shaft (8) is the length of the resistance arm, and the lengths of L1 and L2 are fixed.

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