A welding clamp for welding assemblies of trucks

Abstract

This utility model relates to the field of welding clamp technology, specifically a welding clamp for truck welding assemblies, comprising two electrode heads, the tail ends of which are respectively fixed to the top ends of a first extension plate and a second extension plate. The first extension plate is fixed to the top end of a first fixing block, and the second extension plate is fixed to the top end of a second fixing block. Sliding grooves are provided on both sides of the first fixing block, and clamping sliders are slidably installed within the grooves. The clamping sliders are connected to a rotating clamping plate by bolts. This utility model uses a cylinder to drive the rotating clamping plate to rotate, thereby moving the first fixing block and its electrode heads to achieve the opening and closing of the two electrode heads. The electrode head spacing can be adjusted to compensate for wear by utilizing the cooperative structure of the sliding grooves and the clamping sliders. The overall structural rigidity of the welding clamp is enhanced by the support block between the rotating clamping plates and the support frame composed of a support clamping plate, a support plate, an assembly plate, and a fixing plate with fixing holes, enabling it to adapt to the operational requirements of truck welding assemblies and ensuring stable welding quality.

Description

Technical Field

[0001] This utility model relates to the field of welding clamp technology, specifically a welding clamp for welding truck assemblies. Background Technology

[0002] In the manufacturing and production of trucks, welding is a crucial process for connecting various metal components and forming a robust vehicle body assembly. Welding pliers used for truck welding assemblies are essential tools for this process. Their core function is to clamp the workpiece to be welded using electrode heads and apply a strong current, utilizing the principle of resistance heating to form a weld nugget at the contact point, thereby firmly connecting multiple metal components together. Because trucks have a large structure and are mostly designed for heavy-duty applications, their chassis, cargo box, and other welded assemblies are typically constructed from thick steel plates. The welding points need to withstand enormous loads and impacts, thus placing high demands on welding quality and connection strength. This necessitates the use of welding pliers on truck welding production lines that can provide sufficient clamping force, operate stably, and are durable to complete the heavy and continuous welding tasks.

[0003] However, existing welding clamps often have some shortcomings. On the one hand, after the electrode head wears or deforms due to long-term use, there is often a lack of a simple and effective gap compensation mechanism. The conventional approach is to directly mechanically straighten the electrode head. This approach can easily lead to metal fatigue damage inside the electrode head, or even breakage, thereby affecting the equipment life and posing safety hazards. On the other hand, its overall structural design is often not rigid enough. Under continuous working vibration and impact loads, it is prone to slight deformation, which can cause deviation in the final clamping position of the electrode head, affecting the accuracy and quality of the welding point. Utility Model Content

[0004] The purpose of this invention is to provide a welding clamp for welding assemblies of trucks, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A welding clamp for welding truck assemblies includes two electrode heads, one end of which is abutted against each other, and the other end of which is respectively installed through the top ends of a first extension plate and a second extension plate. The first extension plate is fixedly installed on the top end of a first fixing block, and the second extension plate is fixedly installed on the top end of a second fixing block. Sliding grooves are respectively provided on both sides of the first fixing block, and clamping sliders are slidably installed in the sliding grooves. The clamping sliders are respectively installed on the inner upper side of the two rotating clamping plates by bolts.

[0007] Preferably, a first support block is fixedly installed between the rotating clamping plates at a parallel and adjacent location to the clamping slider, and a second support block is fixedly installed between the rotating clamping plates below the clamping slider.

[0008] Preferably, the rotating clamp is located at the first support block and is installed on the inner side of the two support clamps by a pin, and the support clamp and the rotating clamp are fixed to the second fixing block by bolts at the adjacent part of the two support clamps.

[0009] Preferably, the support clamp is located below the second fixing block and is fixedly connected to both sides of the cylinder by bolts, and the output end of the cylinder is provided with a pneumatic rod.

[0010] Preferably, the other end of the cylinder is mounted between the rotating clamps via a pin and located below the second support block, and support plates are respectively mounted on the outer side of the support clamps via bolts.

[0011] Preferably, an assembly plate is bolted to the bottom of the support plates, and the assembly plate is bolted to the top of the fixing plate. The top of the fixing plate has a plurality of fixing holes spaced apart on both sides.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. A welding clamp for welding truck assemblies, by providing sliding grooves on both sides of the first fixing block and cooperating with the clamping slider, allows the operator to conveniently adjust the overall position of the first fixing block when the distance between the electrode heads widens due to wear from long-term use, thereby effectively restoring the optimal working distance between the two electrode heads, significantly extending the service life of the welding clamp and ensuring the stability of welding quality.

[0014] 2. The welding clamp for truck welding assemblies, by setting a first support block and a second support block between rotating clamps, and combining the support clamp, support plate, assembly plate and fixing plate to form a composite support frame, greatly enhances the overall rigidity and vibration resistance of the welding clamp action mechanism and the main structure, effectively suppresses the structural deformation that may occur during frequent clamping and loosening actions, and ensures the uniformity and consistency of the pressure applied by the electrode head to the workpiece during the welding process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the rotating clamp of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the support clamp of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the support plate of this utility model.

[0019] In the figure: 101, electrode head; 102, first extension plate; 103, second extension plate; 104, first fixing block; 105, second fixing block; 106, sliding groove; 107, clamping slider; 108, rotating clamping plate; 109, first support block; 110, second support block; 111, support clamping plate; 112, cylinder; 113, pneumatic rod; 114, support plate; 115, assembly plate; 116, fixing plate; 117, fixing hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 As shown, this utility model provides a technical solution:

[0022] A welding clamp for welding truck assemblies includes two electrode heads 101, one end of which is abutted against each other, and the other end of which is respectively installed inside the top ends of a first extension plate 102 and a second extension plate 103. The first extension plate 102 is fixedly installed on the top end of a first fixing block 104, and the second extension plate 103 is fixedly installed on the top end of a second fixing block 105. Sliding grooves 106 are respectively provided on both sides of the first fixing block 104, and clamping sliders 107 are slidably installed in the sliding grooves 106. The clamping sliders 107 are respectively installed on the inner upper side of two rotating clamping plates 108 by bolts.

[0023] The above scheme achieves workpiece clamping and welding conductivity through two electrode heads; precise installation and positioning of the electrode heads are achieved by inserting the other end of each electrode head through the top of the first and second extension plates respectively; a stable support base for one electrode is constructed by fixing the first extension plate to the top of the first fixing block; a fixed base for the other electrode is constructed by fixing the second extension plate to the top of the second fixing block; sliding grooves are provided on both sides of the first fixing block to provide a moving track for the position adjustment mechanism; flexible adjustment of the electrode assembly position is achieved by sliding the clamping slider in the sliding groove; and the drive mechanism is effectively connected to the electrode assembly by using bolts to install the clamping slider on the inner upper side of the two opposing rotating clamping plates.

[0024] In this embodiment, preferably, a first support block 109 is fixedly installed between the rotating clamping plates 108 at a parallel and adjacent location to the clamping slider 107, and a second support block 110 is fixedly installed between the rotating clamping plates 108 below the clamping slider 107.

[0025] The above solution enhances the rigidity of the upper region of the rotating clamping plates and prevents deformation by fixing a first support block between the rotating clamping plates and parallel to and adjacent to the clamping slider; and reinforces and supports the lower region of the rotating clamping plates by fixing a second support block between the rotating clamping plates below the clamping slider.

[0026] In this embodiment, preferably, the rotating clamping plate 108 is located at the first support block 109 and is installed on the inner side of the two support clamping plates 111 by a pin, and the support clamping plate 111 and the rotating clamping plate 108 are fixed to the second fixing block 105 by bolts at the adjacent positions.

[0027] The above solution provides a reliable fulcrum for the rotating clamp by using a pin to install it on the inner side of the two support clamps at the first support block, thus enabling its smooth swing. The support clamp and the rotating clamp are fixed to the second fixed block by using bolts at the adjacent points, thus achieving a stable connection between the entire welding clamp action mechanism and the main structure.

[0028] In this embodiment, preferably, the support clamp 111 is located below the second fixing block 105 and is fixedly connected to both sides of the cylinder 112 by bolts, and the output end of the cylinder 112 is provided with a pneumatic rod 113.

[0029] The above solution provides a stable mounting base for the cylinder by using bolts to fix the support clamp to both sides of the cylinder at the position below the second fixing block; and by setting a pneumatic rod at the output end of the cylinder, the power of the cylinder is converted into linear reciprocating motion to drive the entire mechanism.

[0030] In this embodiment, preferably, the other end of the cylinder 112 is mounted between the rotating clamping plates 108 by a pin and located below the second support block 110, and support plates 114 are respectively mounted on the outer side of the support clamping plates 111 by bolts.

[0031] The above solution provides a stable mounting base for the cylinder by using bolts to fix the support clamp to both sides of the cylinder at the position below the second fixing block; and by setting a pneumatic rod at the output end of the cylinder, the power of the cylinder is converted into linear reciprocating motion to drive the entire mechanism.

[0032] In this embodiment, preferably, an assembly plate 115 is bolted to the bottom of the support plates 114, and the assembly plate 115 is bolted to the top of the fixing plate 116. The fixing plate 116 has a plurality of fixing holes 117 spaced apart on both sides of the top of the fixing plate 116.

[0033] The above solution integrates and strengthens the bottom support frame by using bolts to install the assembly plate below the support plates; the assembly plate is installed on the top of the fixed plate by using bolts to firmly connect the entire upper structure of the welding clamp to the foundation installation platform; and several fixing holes are opened at intervals on both sides of the top of the fixed plate to provide flexible and diverse installation points, allowing the welding clamp to adapt to different installation interfaces and position requirements.

[0034] In this embodiment, a welding clamp for a truck welding assembly is used such that, when the cylinder 112 is activated, it drives the pneumatic rod 113 to perform precise linear motion. The end of the pneumatic rod 113 is connected between two rotating clamping plates 108 via a pin, and this connection point is located below the second support block 110. The extension and retraction of the pneumatic rod 113 directly acts on this part of the rotating clamping plate 108. At the same time, the upper ends of the two rotating clamping plates 108 are installed on the inner side of the two support clamping plates 111 via another pin. This connection point is located at the first support block 109, so that the rotating clamping plates 108 can achieve stable rotation inside the support clamping plates 111 with the pin as the rotation fulcrum.

[0035] When the cylinder 112 drives the pneumatic rod 113 to extend, it pushes the rotating clamping plate 108 to move outward in the downward direction. According to the lever principle, the upper part of the rotating clamping plate 108 moves inward. This movement drives the clamping slider 107 fixed on its inner side. The clamping slider 107 drives the first extension plate 102 and its electrode head 101 through the first fixing block 104, and the whole moves towards the electrode head 101 on the second extension plate 103 in the direction of the second fixing block 105. Finally, the working surfaces of the two electrode heads 101 approach each other and press the workpiece. During this process, the first support block 109 and the second support block 110 fixed between the rotating clamping plates 108 effectively enhance the structural rigidity of the rotating clamping plate 108 group, ensuring that the welding pressure can be evenly transmitted to the electrode head 101.

[0036] When the cylinder 112 drives the pneumatic rod 113 to retract, it pulls the rotating clamp 108 to move inward in the downward direction. The upper part of the rotating clamp 108 moves outward in the opposite direction. Through the clamping slider 107 and the first fixing block 104, it drives the electrode head 101 on the first extension plate 102 away from the electrode head 101 on the second extension plate 103, thereby releasing the workpiece and completing a welding cycle.

[0037] The support clamp 111 not only provides a fulcrum for the rotating clamp 108 via a pin, but also achieves a fixed connection with the second fixing block 105 via bolts, providing a stable installation foundation for the entire swing mechanism. A support plate 114 is also bolted to the outside of the support clamp 111. The two support plates 114 are connected below each other by an assembly plate 115, which is then bolted to the top of the fixing plate 116. Several fixing holes 117 are spaced apart on both sides of the top of the fixing plate 116 for firmly installing the entire welding clamp assembly onto external equipment or a robotic arm. This support frame, composed of the support clamp 111, support plate 114, assembly plate 115, and fixing plate 116, greatly enhances the overall rigidity and vibration resistance of the welding clamp.

[0038] After prolonged and frequent use, if the effective working distance between the two electrode heads 101 increases due to wear or deformation of the electrode head 101, the bolts fixing the clamping slider 107 to the upper inner side of the rotating clamping plate 108 can be loosened to release the locking of the clamping slider 107. At this time, the sliding grooves 106 on both sides of the first fixing block 104 can slide on the clamping slider 107, thereby driving the entire first fixing block 104, the first extension plate 102 and its electrode head 101 to adjust their position relative to the second fixing block 105 and its electrode head 101. After the distance between the two electrode heads 101 is adjusted to the optimal value, the bolts of the clamping slider 107 can be tightened to restore stable clamping. This design avoids the metal lattice damage and fatigue cracks that may be caused by directly and forcefully straightening the electrode head 101 in the traditional method, significantly extends the service life of the electrode head 101 and the entire welding clamp, and ensures the continuous stability of welding quality.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A welding clamp for welding truck assemblies, comprising two electrode heads (101), characterized in that: One end of the electrode head (101) is close to the other end of the electrode head (101), and the other end of the electrode head (101) is respectively installed inside the top end of the first extension plate (102) and the second extension plate (103). The first extension plate (102) is fixedly installed on the top end of the first fixing block (104), and the second extension plate (103) is fixedly installed on the top end of the second fixing block (105). Sliding grooves (106) are respectively opened on both sides of the first fixing block (104). Clamping sliders (107) are slidably installed in the sliding grooves (106). The clamping sliders (107) are respectively installed on the inner upper side of the two opposing rotating clamping plates (108) by bolts.

2. The welding clamp for welding truck assemblies according to claim 1, characterized in that: A first support block (109) is fixedly installed between the rotating clamping plates (108) and adjacent to the clamping slider (107), and a second support block (110) is fixedly installed between the rotating clamping plates (108) below the clamping slider (107).

3. The welding clamp for welding truck assemblies according to claim 2, characterized in that: The rotating clamp (108) is located at the first support block (109) and is installed on the inner side of the two support clamps (111) by a pin. The support clamp (111) and the rotating clamp (108) are fixed to the second fixing block (105) by bolts at the adjacent positions.

4. A welding clamp for welding truck assemblies according to claim 3, characterized in that: The support clamp (111) is located below the second fixing block (105) and is fixedly connected to both sides of the cylinder (112) by bolts. The output end of the cylinder (112) is provided with a pneumatic rod (113).

5. A welding clamp for welding truck assemblies according to claim 4, characterized in that: The other end of the cylinder (112) is mounted between the rotating clamps (108) by a pin and located below the second support block (110). Support plates (114) are respectively bolted to the outer side of the support clamps (111).

6. A welding clamp for welding truck assemblies according to claim 5, characterized in that: An assembly plate (115) is bolted to the bottom of the support plate (114). The assembly plate (115) is bolted to the top of the fixing plate (116). Several fixing holes (117) are provided at intervals on both sides of the top of the fixing plate (116).

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