Medium-frequency internal welding multi-head spot welding machine

Abstract

The utility model provides an intermediate frequency internal welding multi-head spot welding machine which comprises a machine frame, a jacking device and two sets of multi-head spot welding devices arranged on the left side and the right side of the machine frame respectively, the machine frame is provided with a welding area between the two sets of multi-head spot welding devices, and the jacking device is installed on the machine frame and located below the welding area. A main sliding rail extending in the left-right direction is arranged on the rack, the two sets of multi-head spot welding devices are oppositely arranged and slidably connected to the main sliding rail, fixing devices are arranged on the portions, located on the left side and the right side of a welding area, of the rack, the fixing devices on the two sides are oppositely arranged, and each fixing device comprises a mounting base, a telescopic air cylinder and a positioning plate. The telescopic air cylinder is fixed to the installation base, and an air cylinder shaft of the telescopic air cylinder penetrates through the installation base and is fixedly connected with the back face of the positioning plate. The multi-head spot welding machine is provided with the two sets of fixing devices, and the to-be-spliced pieces are fixed through the two sets of fixing devices, so that the spliced pieces can be in tight butt joint together, and it is guaranteed that displacement cannot occur during welding.

Description

Technical Field

[0001] This utility model relates to a medium-frequency internal welding multi-head spot welding machine. Background Technology

[0002] Currently in the welding industry, in order to improve welding and production efficiency and reduce defective products, companies choose to use welding machines in conjunction with assembly lines to achieve automated production processes. A common problem with current welding machines in automated production is improper splicing at the joints of welded parts, leading to the direct scrapping of the welded product. This is mainly due to the vibration and displacement of the welded parts during assembly line transport.

[0003] Therefore, it is necessary to make further improvements. Utility Model Content

[0004] To address the aforementioned issues, this invention proposes a medium-frequency internal welding multi-head spot welding machine. This welding machine is equipped with a fixing device that can position the spliced ​​parts before welding, ensuring that the splice joints are properly connected.

[0005] This utility model proposes a medium-frequency internal welding multi-head spot welding machine, which includes a frame, a lifting device, and two sets of multi-head spot welding devices respectively arranged on the left and right sides of the frame. The frame is located between the two sets of multi-head spot welding devices and has a welding area. The lifting device is installed on the frame and located below the welding area. The frame is provided with a main slide rail extending in the left and right direction. The two sets of multi-head spot welding devices are arranged opposite to each other and slidably connected to the main slide rail. The frame is provided with fixing devices on the left and right sides of the welding area. The fixing devices on both sides are arranged opposite to each other. The fixing device includes a mounting base, a telescopic cylinder, and a positioning plate. The mounting base is fixed to the frame, the telescopic cylinder is fixed to the mounting base, and the cylinder shaft of the telescopic cylinder passes through the mounting base and is connected and fixed to the back of the positioning plate.

[0006] In one or more embodiments, the mounting base is provided with sliding seats and sliding rails that cooperate with the sliding seats on both sides. The sliding seats are fixed on the mounting base, and the front end of the sliding rails is connected to the back of the positioning plate.

[0007] In one or more embodiments, the lifting device includes a fixed plate, a movable plate, and a third lifting cylinder. The fixed plate is fixedly mounted on the frame, the movable plate is located above the fixed plate, the third lifting cylinder is mounted on the fixed plate, the cylinder shaft of the third lifting cylinder is connected to the movable plate, and a plurality of positioning posts are provided on the upper end surface of the movable plate.

[0008] In one or more embodiments, guide rails are provided on both sides of the movable plate, the guide rails extend downward, and the fixed plate is provided with guide rail slides that are slidably connected to the guide rails.

[0009] In one or more embodiments, the frame is provided with two sets of drive mechanisms for driving two sets of multi-head spot welding devices. The drive mechanism includes a motor, a screw, a slide rail and a slide block. The slide rail is installed on one side of the main slide rail, the screw extends along the length of the slide rail, the motor is installed on the slide rail and drives the screw to rotate, the slide block is slidably connected to the slide rail and screwed to the second screw, and the slide block is connected to the multi-head spot welding device.

[0010] In one or more embodiments, the multi-head spot welding device includes a base, a base, a lifting mechanism, and a welding mechanism. The lifting mechanism is mounted on the base and is used to drive the base to move up and down. The base is slidably connected to the main slide rail. The welding mechanism includes a horizontal rail, a first lifting cylinder, a second lifting cylinder, an upper electrode head, and a lower electrode head. The horizontal rail extends in the front-back direction and is mounted on the base. The first lifting cylinder is slidably connected to the horizontal rail and is connected to the lower electrode head. The second lifting cylinder is mounted on the base and is connected to the upper electrode head. The upper electrode head and the lower electrode head correspond to each other vertically and cooperate for welding.

[0011] In one or more embodiments, a clamping device is mounted on the base. The clamping device includes a clamping cylinder and a clamping seat. The cylinder shaft of the clamping cylinder is connected to the clamping seat and is used to drive the clamping device to move toward the welding area.

[0012] The beneficial effects of this utility model are as follows: The multi-head spot welding machine is equipped with two sets of fixing devices. The two sets of fixing devices fix the parts to be spliced, so that the parts can be joined together tightly, so that there will be no displacement during welding, thereby improving the product yield. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the multi-head spot welding machine with in-frequency internal welding in this embodiment;

[0014] Figure 2 This is a schematic diagram of the fixing device in this embodiment;

[0015] Figure 3 This is a schematic diagram of the multi-head spot welding device in this embodiment. Detailed Implementation

[0016] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0017] Please refer to the appendix. Figure 1-3This utility model provides a medium-frequency internal welding multi-head spot welding machine, including a frame 1, a lifting device, and two sets of multi-head spot welding devices 2 respectively located on the left and right sides of the frame 1. The frame has a welding area 3 located between the two sets of multi-head spot welding devices. The lifting device is installed on the frame and located below the welding area. The frame 1 is provided with a main slide rail 4 extending in the left and right direction. The two sets of multi-head spot welding devices 2 are arranged opposite to each other and slidably connected to the main slide rail 4. The frame is provided with fixing devices 5 on the left and right sides of the welding area. The fixing devices on both sides are arranged opposite to each other. The fixing device includes a mounting base 51, a telescopic cylinder 52, and a positioning plate 53. The mounting base is fixed to the frame 1, and the telescopic cylinder 52 is fixed to the mounting base 51. The cylinder shaft of the telescopic cylinder passes through the mounting base and is connected and fixed to the back of the positioning plate 53. The telescopic cylinder pushes the positioning plate to move towards the welding area, thereby holding the workpiece to be welded and preventing it from shifting during or before welding, ensuring that the joint of the workpiece to be welded is tight and connected in place.

[0018] The mounting base 51 has sliding seats 54 on both sides and sliding rails 55 that cooperate with the sliding seats to slide. The sliding seats are fixed on the mounting base 51, and the front end of the sliding rails 55 is connected to the back of the positioning plate 53. Specifically, bolts can be used for connection and fixation. With the cooperation of the sliding seats and the sliding rails, the stability of the positioning plate when it moves back and forth can be ensured.

[0019] The lifting device includes a fixed plate 6, a movable plate 7, and a third lifting cylinder 8. The fixed plate is fixed on the frame 1, the movable plate is located above the fixed plate, and the third lifting cylinder 8 is installed on the fixed plate 6. The cylinder shaft of the third lifting cylinder is connected to the movable plate 7. The upper end face of the movable plate is provided with multiple positioning posts 9, which are used to connect and position with the tooling plate. The tooling plate is used to place the parts to be welded.

[0020] The movable plate 7 is provided with guide rails 10 on both sides, and the guide rails extend downward. The fixed plate 6 is provided with guide rail slides 11 that are slidably connected to the guide rails. With the sliding cooperation between the guide rail slides and the guide rails, the stability of the movable plate when it is raised and lowered can be ensured. The guide rails are fixed to the movable plate with bolts, and the guide rail slides are also fixed to the fixed plate with bolts.

[0021] The frame 1 is equipped with two sets of drive mechanisms to drive two sets of multi-head spot welding devices. The drive mechanism includes a motor 12, a screw, a slide rail 13, and a slide block 14. The slide rail is installed on one side of the main slide rail 4. The screw extends along the length of the slide rail. The motor is installed on the slide rail and drives the screw to rotate. The slide block 14 is slidably connected to the slide rail and screwed to the second screw. The slide block is connected to the multi-head spot welding device. The slide rail is equipped with a bearing for connecting with the screw to ensure that the screw rotates smoothly and stably. With the motor driving the screw to rotate, and with the cooperation of the slide block, the slide rail, and the screw, the slide block can move along the slide rail when the screw rotates, thereby driving the multi-head spot welding device to move.

[0022] In this embodiment, the multi-head spot welding device includes a base 15, a base 16, a lifting mechanism 17, and a welding mechanism. The lifting mechanism is mounted on the base and is used to drive the base to move up and down. The base 15 is slidably connected to the main slide rail 4. The welding mechanism includes a horizontal rail 18, a first lifting cylinder 19, a second lifting cylinder 20, an upper electrode head 21, and a lower electrode head 22. The horizontal rail extends in the front-back direction and is mounted on the base 16. The first lifting cylinder 19 is slidably connected to the horizontal rail and is connected to the lower electrode head 22. The second lifting cylinder 20 is mounted on the base 16 and is connected to the upper electrode head 21. The upper electrode head and the lower electrode head correspond to each other and cooperate for welding. The multi-head spot welding device slides along the main slide rail, enabling the welding mechanism to move left and right. The lower electrode head slides along the horizontal rail via the first lifting cylinder, enabling it to move forward and backward. The lifting and lowering operation of the first lifting cylinder enables the lower electrode head to move up and down. Therefore, during welding, by performing the above adjustments in the left, right, forward, backward, and up and down directions, the lower electrode head can be brought into the inner side of the product to be welded. Correspondingly, the upper electrode head is raised and lowered via the second lifting cylinder, so that the upper electrode head on the outside of the product to be welded cooperates with the lower electrode head on the inside of the product to be welded to achieve welding.

[0023] A clamping device is installed on the base 16. The clamping device includes a clamping cylinder 23 and a clamping seat 24. The cylinder shaft of the clamping cylinder is connected to the clamping seat 24 and is used to drive the clamping device to move towards the welding area 3. The clamping seat fits the external structure of the workpiece to be welded, further fixing the workpiece to be welded, making the workpiece more stable during welding and preventing displacement or loosening. The clamping seat is fixed to the cylinder shaft with bolts, so that different clamping seats can be used according to the shape of different welded products.

[0024] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. A medium-frequency internal welding multi-head spot welding machine, characterized in that: The device includes a frame (1), a lifting device, and two sets of multi-head spot welding devices (2) respectively located on the left and right sides of the frame (1). The frame is located between the two sets of multi-head spot welding devices and has a welding area (3). The lifting device is installed on the frame and located below the welding area. The frame (1) is provided with a main slide rail (4) extending in the left and right direction. The two sets of multi-head spot welding devices (2) are arranged opposite to each other and slidably connected to the main slide rail (4). The frame is provided with fixing devices (5) on the left and right sides of the welding area. The fixing devices on both sides are arranged opposite to each other. The fixing device includes a mounting base (51), a telescopic cylinder (52), and a positioning plate (53). The mounting base is fixed on the frame (1), the telescopic cylinder (52) is fixed on the mounting base (51), and the cylinder shaft of the telescopic cylinder passes through the mounting base and is connected and fixed to the back of the positioning plate (53).

2. The medium-frequency internal welding multi-head spot welding machine according to claim 1, characterized in that: The mounting base (51) has sliding seats (54) on both sides and sliding rails (55) that cooperate with the sliding seats to slide. The sliding seats are fixed on the mounting base (51), and the front end of the sliding rails (55) is connected to the back of the positioning plate (53).

3. The medium-frequency internal welding multi-head spot welding machine according to claim 1, characterized in that: The lifting device includes a fixed plate (6), a movable plate (7) and a third lifting cylinder (8). The fixed plate is installed and fixed on the frame (1). The movable plate is located above the fixed plate. The third lifting cylinder (8) is installed on the fixed plate (6). The cylinder shaft of the third lifting cylinder is connected to the movable plate (7). Multiple positioning columns (9) are provided on the upper end face of the movable plate.

4. A medium-frequency internal welding multi-head spot welding machine according to claim 3, characterized in that: The movable plate (7) is provided with guide rails (10) on both sides, the guide rails extend downward, and the fixed plate (6) is provided with guide rail slide (11) that is slidably connected to the guide rails.

5. A medium-frequency internal welding multi-head spot welding machine according to claim 1, characterized in that: The frame (1) is provided with two sets of drive mechanisms for driving two sets of multi-head spot welding devices. The drive mechanism includes a motor (12), a screw, a slide rail (13) and a slide block (14). The slide rail is installed on one side of the main slide rail (4). The screw extends along the length of the slide rail. The motor is installed on the slide rail and drives the screw to rotate. The slide block (14) is slidably connected to the slide rail and screwed to the second screw. The slide block is connected to the multi-head spot welding device.

6. A medium-frequency internal welding multi-head spot welding machine according to claim 1, characterized in that: The multi-head spot welding device includes a base (15), a base (16), a lifting mechanism (17), and a welding mechanism. The lifting mechanism is installed on the base and is used to drive the base to move up and down. The base (15) is slidably connected to the main slide rail (4). The welding mechanism includes a horizontal rail (18), a first lifting cylinder (19), a second lifting cylinder (20), an upper electrode head (21), and a lower electrode head (22). The horizontal rail extends in the front-back direction and is installed on the base (16). The first lifting cylinder (19) is slidably connected to the horizontal rail and is connected to the lower electrode head (22). The second lifting cylinder (20) is installed on the base (16) and is connected to the upper electrode head (21). The upper electrode head and the lower electrode head correspond to each other and cooperate for welding.

7. A medium-frequency internal welding multi-head spot welding machine according to claim 6, characterized in that: A clamping device is installed on the base (16). The clamping device includes a clamping cylinder (23) and a clamping seat (24). The cylinder shaft of the clamping cylinder is connected to the clamping seat (24) and is used to drive the clamping device to move toward the welding area (3).

Images