Automatic lifting positioning and clamping mechanism

Abstract

The utility model relates to an automatic lifting positioning and clamping mechanism, which comprises two groups of clamping parts, the two groups of clamping parts are respectively arranged on the left side and the right side of a flash welding machine on a flash welding machine tool, each group of clamping parts comprises more than two mounting plates, one end of each mounting plate is provided with a motor, the output end of each motor is connected with a lead screw, and the lead screw is connected with a lead screw. A lead screw is arranged on the installation plate, a nut is in threaded connection with the lead screw, a sliding groove is formed in the position, corresponding to the lead screw, of the installation plate, the nut is arranged in the sliding groove in a sliding mode, a fixing shaft is arranged on the nut, a clamping roller is rotationally arranged outside the fixing shaft, and a long round hole with the width larger than the diameter of the clamping roller is formed in the position, corresponding to the sliding groove, of the flash welding machine tool. And the lifting device is fixedly connected with the mounting plate. According to the rail clamping device, a welded rail can be clamped, the clamping part can be prevented from influencing feeding and discharging of the rail by arranging the lifting mechanism and the oblong holes, and the clamping roller can freely move in the X-axis direction while being fixed in the y-axis direction of the rail.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail flash welding technology, concretely relates to a positioning clamping mechanism of automatic lifting. BACKGROUND

[0002] The welding joints of welding frog and turnout rail at home and abroad all need to use the flash welding mode to weld, but so far the misalignment phenomenon often appears at the weld position after flash welding, according to incomplete statistics, the misalignment overrate is about 20%, for the frog of misalignment, not only causes the increase of grinding quantity, but also increases secondary processing and other procedures, the frog of serious misalignment needs to be sawed and re-welded, makes the product productivity low, the flash welding machine in the prior art includes a flash welding machine, but the flash welding machine cannot realize the positioning of two workpieces, and the upsetting force applied during flash welding is too large, and lateral force is generated during upsetting, which makes it more prone to misalignment. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the technical problem of misalignment at the welding position during flash welding of the track in the prior art, the utility model provides a positioning clamping mechanism of automatic lifting.

[0004] The utility model discloses a positioning clamping mechanism of automatic lifting, which is characterized by comprising two groups of clamping parts, the two groups of clamping parts are arranged on the left and right sides of a flash welding machine on a flash welding machine tool respectively, each group of clamping parts comprises two or more mounting plates, the mounting plates are arranged below the flash welding machine tool, one end of each mounting plate is provided with a motor, the output end of the motor is connected with a lead screw, a nut is threadedly connected on the lead screw, a sliding groove is arranged on the mounting plate corresponding to the lead screw, the nut is slidably arranged in the sliding groove, a fixed shaft is arranged on the nut, a clamping roller is rotatably arranged outside the fixed shaft, a long circular hole with a width greater than the diameter of the clamping roller is formed in the flash welding machine tool corresponding to the sliding groove, a lifting device is arranged on the ground below the mounting plate, and the lifting device is fixedly connected with the mounting plate.

[0005] Preferably, the lifting device is an electric push rod or an air cylinder.

[0006] Preferably, the outside of the clamping roller is wrapped with an insulating layer.

[0007] Preferably, each group of clamping parts comprises four mounting plates.

[0008] Preferably, the clamping roller and the fixed shaft are connected through a bearing.

[0009] The beneficial effects of this utility model are that the motor can drive the clamping roller to move in the elongated hole to clamp the welded track. By setting the lifting mechanism and the elongated hole, the clamping part can avoid affecting the loading and unloading of the track. The clamping roller is rotatably set on the fixed shaft, so that the clamping roller is fixed in the y-axis direction of the track, while it can move freely in the X-axis direction, which meets the needs of track movement during the welding process. Attached Figure Description

[0010] Figure 1 This is a top view of an automatic lifting positioning and clamping mechanism according to this utility model.

[0011] Figure 2 This utility model relates to an automatic lifting positioning and clamping mechanism that descends along the edge Figure 1 Sectional view along the AA direction.

[0012] Figure 3 This utility model relates to an automatic lifting positioning and clamping mechanism that, when rising, [follows / adjusts / etc.]. Figure 1 Sectional view along the AA direction.

[0013] In the diagram: 1. Flash welding machine tool; 2. Flash welding machine; 3. Mounting plate; 4. Motor; 5. Lead screw; 6. Clamping roller; 7. Oblong hole; 8. Track; 9. Nut; 10. Fixed shaft; 11. Lifting device; 12. Slide groove. Detailed Implementation

[0014] The specific implementation method of the automatic lifting positioning and clamping mechanism of this utility model is as follows: Figures 1-3 As shown, the device includes two sets of clamping parts, left and right, respectively located on the left and right sides of the flash welding machine 2 on the flash welding machine tool 1. Each set of clamping parts includes four mounting plates 3, which are positioned below the flash welding machine tool 1. Each mounting plate 3 has a motor 4 at one end, and the output end of the motor 4 is connected to a lead screw 5. A nut 9 is threaded onto the lead screw 5. A groove 12 is provided on the mounting plate 3 corresponding to the lead screw 5, and the nut 9 is slidably positioned within the groove 12. A fixed shaft 10 is provided on the nut 9, and a clamping roller 6 is connected to the fixed shaft 10 via a bearing, allowing the clamping roller 6 to... Rotating around the axis of the fixed shaft 10, the flash welding machine tool 1 has an elongated hole 7 with a width greater than the diameter of the clamping roller 6 at the corresponding slide groove 12, so that the clamping roller 6 can pass through the elongated hole 7. A lifting device 11 is provided on the ground below the mounting plate 3. The lifting device 11 can be an electric push rod or a cylinder. The output end of the electric push rod or the cylinder is connected to the bottom of the mounting plate 3 to drive the mounting plate 3 to move up and down, thereby driving the clamping roller 6 to move up and down. The clamping roller 6 is wrapped with an insulating layer to make the clamping roller 6 insulated from the track 8.

[0015] Working principle: when the need to clamp rail 8, start lifting device 11, lifting device 11 drive the installation plate 3 upward movement, installation plate 3 drive its on the clamp roller 6 out of the long hole 7 on the flash butt welding machine 1, start the motor 4, the motor 4 drive screw 5 rotation, screw 5 drive its on the nut 9 in the sliding slot 12 sliding, nut 9 drive its on the fixed shaft 10 move forward and backward, the fixed shaft 10 on the clamp roller 6 will also move forward and backward, adjust the position of each clamp roller 6, make its interval distribution in the two sides of the rail 8, the rail 8 is placed between the two sides of the clamp roller 6, start the motor 4 again, make the clamp roller 6 can tighten the rail 8, two sides of the clamp part respectively clamp the rail 8 need to be welded together, start the flash butt welding machine 2 again, weld the joint.

Claims

1. An automatic lifting positioning and clamping mechanism, characterized in that, The device includes two sets of clamping parts, which are respectively located on the left and right sides of the flash welding machine (2) on the flash welding machine tool (1). Each set of clamping parts includes two or more mounting plates (3), which are located below the flash welding machine tool (1). Each mounting plate (3) has a motor (4) at one end, and the output end of the motor (4) is connected to a lead screw (5). A nut (9) is threaded onto the lead screw (5). The mounting plate (3) is positioned corresponding to the lead screw (5). A sliding groove (12) is provided, and the nut (9) is slidably disposed in the sliding groove (12). A fixed shaft (10) is provided on the nut (9), and a clamping roller (6) is rotatably disposed on the fixed shaft (10). A long oval hole (7) with a width greater than the diameter of the clamping roller (6) is opened at the sliding groove (12) of the flash welding machine tool (1). A lifting device (11) is provided on the ground below the mounting plate (3), and the lifting device (11) is fixedly connected to the mounting plate (3).

2. The automatic lifting positioning and clamping mechanism according to claim 1, characterized in that, The lifting device (11) is an electric push rod or a cylinder.

3. The automatic lifting positioning and clamping mechanism according to claim 1, characterized in that, The clamping roller (6) is covered with an insulating layer.

4. The automatic lifting positioning and clamping mechanism according to claim 1, characterized in that, Each clamping unit includes four mounting plates (3).

5. The automatic lifting positioning and clamping mechanism according to claim 1, characterized in that, The clamping roller (6) is connected to the fixed shaft (10) via a bearing.

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