Long-distance cross beam pressing device

Abstract

The utility model belongs to the technical field of friction stir welding, and particularly relates to a long-distance beam pressing device. The device comprises a pressing mechanism for pressing a product to be welded and a moving assembly for driving the pressing mechanism to move in the horizontal direction, wherein the pressing mechanism comprises a horizontal connecting cross beam and a pressing arm which is arranged on the connecting cross beam and can move up and down; the length of the connecting cross beam is larger than 5 meters. According to the utility model, the problem of positioning a welded product in the friction stir welding process is solved, and particularly in long-span welding, the welded product is always kept in a compressed state in the welding process, and the welding quality is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of stir friction welding, and in particular relates to a long-distance crossbeam pressing device. Background Art

[0002] Friction welding is a method that uses the heat generated by the movement and friction between the end faces of the workpieces to make the ends reach a thermoplastic state, and then quickly forges them to complete the welding. Friction welding can easily connect the same or different materials, including metals, some metal-based composite materials, ceramics and plastics.

[0003] The Chinese patent with publication number CN102248211A discloses a double-sided milling machine with movable beam pressure, in which beam pressure moving mechanisms are arranged at both ends of the beam pressure, two milling power heads are installed on both sides of the bed, and four milling power heads can simultaneously mill both sides of a rectangular plate workpiece, and the beam pressure is electrically movable. Although the patent can realize the convenience of upper and lower workpieces, it is not suitable for long-span welding and long-distance stir friction welding spindle working height. Therefore, a long-distance beam clamping device is urgently needed to solve the above problems. Utility Model Content

[0004] In order to overcome the defects in the prior art, the utility model provides a long-distance crossbeam clamping device. The utility model solves the positioning problem of the welded product during the friction stir welding process, especially in long-span welding, ensuring that the welded product is always kept in a clamped state during the welding process and ensuring the welding quality.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A long-distance beam clamping device includes a clamping mechanism for clamping the product to be welded and a moving component for driving the clamping mechanism to move horizontally. The clamping mechanism includes a horizontal connecting beam and a clamping arm installed on the connecting beam and can move up and down; the length of the connecting beam is greater than 5 meters.

[0007] Preferably, the moving assembly includes a slide, guide rails arranged at both ends of the connecting beam, and a power mechanism that drives the slide to slide on the guide rails. The two ends of the connecting beam are respectively mounted on two slides, and the slide is installed on the guide rails.

[0008] Preferably, the power mechanism consists of a screw and a motor, the output end of the motor is transmission-connected to one end of the screw through a connecting piece, and the other end of the screw is connected to the slide.

[0009] Preferably, the clamping mechanism further comprises a clamping cylinder and a clamping block for driving the clamping arm to move up and down, and the clamping block is fixedly connected to the movable end of the clamping arm.

[0010] Preferably, the non-movable end of the clamping arm is hinged to the connecting beam, and the output end of the clamping cylinder is transmission-connected to the curved arm body of the clamping arm, so that the movable end of the clamping arm can rotate along the hinge point with the connecting beam as the center of the circle; the non-output end of the clamping cylinder is fixed on the connecting beam.

[0011] Preferably, the pressing block is in the shape of an elongated strip, and two ends of a pressing block are respectively fixedly connected to the two pressing arms.

[0012] Preferably, a plurality of clamping mechanisms are provided along the length direction of the connecting beam.

[0013] Preferably, the device further comprises a positioning mechanism, which comprises a positioning block and a positioning cylinder for driving the positioning block to move up and down.

[0014] Preferably, the positioning cylinder and the pressing cylinder can be connected to a controller with a timer.

[0015] The advantages of the utility model are:

[0016] (1) The utility model solves the problem of positioning the welded products during the friction stir welding process, especially in long span welding, ensuring that the welded products are always kept in a compacted state during the welding process and ensuring the welding quality.

[0017] (2) The utility model solves the problem of difficulty and high cost in pressing the middle position of the weld during stir friction welding, as well as the problem of product warping during stir friction welding. The power source can not only be directly pressed at the center of the weld, but also meet the requirements of sequential opening during welding.

[0018] (3) The power source of the utility model is distributed on the connecting beam, and the beam is pressed and moved with dual power for synchronous movement; and sequential opening can be achieved.

[0019] (4) The utility model can be used to clamp different welding positions; the welding position can be infinitely adjusted through an electrical program. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model.

[0021] Figure 2 This is a partial enlarged structural diagram of the positioning block of the utility model.

[0022] Figure 3 It is a schematic diagram of the partially enlarged structure of the slide table of the utility model.

[0023] Figure 4 This is a schematic structural diagram of Example 2 of the utility model.

[0024] The meanings of the symbols in the figure are as follows:

[0025] 1-connecting beam, 2-pressing arm, 3-pressing cylinder, 4-pressing block, 5-slide, 6-guide rail, 7-screw, 8-motor, 9-positioning cylinder, 10-positioning block. DETAILED DESCRIPTION

[0026] like Figure 1-4 As shown, a long-distance beam clamping device includes a clamping mechanism for clamping the product to be welded and a moving component for driving the clamping mechanism to move horizontally. The clamping mechanism includes a horizontal connecting beam 1, a clamping arm 2 installed on the connecting beam 1 and movable up and down, a clamping cylinder 3 and a clamping block 4 for driving the clamping arm 2 to move up and down, and the clamping block 4 is fixedly connected to the movable end of the clamping arm 2. The length of the connecting beam 1 is greater than 5 meters, and the clamping of a span of 5 meters or more can be achieved. The clamping block 4 is in the shape of a long strip, and the two ends of a clamping block 4 are respectively fixedly connected to the two clamping arms 2.

[0027] Specifically, the moving assembly includes a slide 5, guide rails 6 arranged at both ends of the connecting beam 1, and a power mechanism for driving the slide 5 to slide on the guide rails 6. The two ends of the connecting beam 1 are respectively mounted on the two slides 5, and the slide 5 is installed on the guide rails 6. The power mechanism is composed of a screw 7 and a motor 8. The output end of the motor 8 is transmission-connected to one end of the screw 7 through a connecting piece, and the other end of the screw 7 is connected to the slide 5. The non-moving end of the clamping arm 2 is hinged to the connecting beam 1, and the output end of the clamping cylinder 3 is transmission-connected to the arm body of the curved clamping arm 2, so that the moving end of the clamping arm 2 can rotate along the hinge point with the connecting beam 1 as the center of the circle; the non-output end of the clamping cylinder 3 is fixed to the connecting beam 1.

[0028] Furthermore, a plurality of clamping mechanisms are provided along the length direction of the connecting beam 1 .

[0029] Furthermore, the device also includes a positioning mechanism, which includes a positioning block 10 and a positioning cylinder 9 that drives the positioning block 10 to move up and down. The positioning can be adjusted in size according to different specifications of the product. The positioning cylinder 9 and the pressing cylinder 3 can be connected to a controller with a timer to achieve timed opening and closing.

[0030] Example 1

[0031] like Figure 1As shown, when the product to be welded has no shape positioning, after the product is installed on the welding workbench, the power source (i.e., motor 8, the same below) is transmitted to the slide 5 through the screw 7 to move to the positioning position of the welded product, and the positioning cylinder 9 presses down to drive the positioning block 10, and one side of the positioning block 10 is against the product to be welded, and the product to be welded is positioned and pressed in place, and the position in place can be infinitely adjusted. After the power source locks the slide 5, the clamping cylinder 3 drives the clamping block 4 on the clamping arm 2 to be pressed to the weld position, and the clamping cylinder 3 is equipped with an opening and clamping detection device to ensure that each opening and clamping has a corresponding signal output. During the welding process, the clamping cylinder 3 drives the clamping block 4 on the clamping arm 2 to open sequentially to ensure that the height difference of the welded product during the welding process remains within the range where welding can be implemented. After the welding is completed, the positioning cylinder 9 and the clamping cylinder 3 drive the clamping block 4 on the clamping arm 2 to open, and the power source is transmitted to the slide 5 through the screw 7 and moves to the next welding position.

[0032] Example 2

[0033] like Figure 4 As shown, when the welded product has an outer shape positioning, after the product is installed on the welding workbench, the power source (i.e., motor 8, the same below) is transmitted to the slide 5 through the screw 7, and the connecting beam 1 moves along the guide rail 6 to the position where welding and clamping are required. After the power source locks the slide 5, the clamping cylinder 3 drives the clamping block 4 on the clamping arm 2 to be clamped to the weld position. The clamping cylinder 3 is equipped with an opening and clamping detection device to ensure that each opening and clamping has a corresponding signal output. During the welding process, the clamping cylinder 3 drives the clamping block 4 on the clamping arm 2 to open in sequence to ensure that the height difference of the welded product during the welding process remains within the range where welding can be implemented. After the welding is completed, the clamping cylinder 3 drives the clamping block 4 on the clamping arm 2 to open, and the power source is transmitted to the slide 5 through the screw 7 and moves to the next welding position.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A long distance beam clamping device, characterized in that: The device comprises a clamping mechanism for clamping a product to be welded and a moving assembly for driving the clamping mechanism to move horizontally, wherein the clamping mechanism comprises a horizontal connecting beam (1) and a clamping arm (2) mounted on the connecting beam (1) and movable up and down; the length of the connecting beam (1) is greater than 5 meters; the moving assembly comprises a slide (5), guide rails (6) arranged at both ends of the connecting beam (1), and a power mechanism for driving the slide (5) to slide on the guide rails (6); the two ends of the connecting beam (1) are respectively mounted on two slides (5), and the slide (5) is mounted on the guide rails (6).

2. A long distance beam clamping device according to claim 1, characterized in that: The power mechanism is composed of a screw rod (7) and a motor (8); the output end of the motor (8) is transmission-connected to one end of the screw rod (7) via a connecting piece, and the other end of the screw rod (7) is connected to the slide table (5).

3. A long distance beam clamping device according to claim 1, characterized in that: The clamping mechanism also includes a clamping cylinder (3) and a clamping block (4) for driving the clamping arm (2) to move up and down, and the clamping block (4) is fixedly connected to the moving end of the clamping arm (2).

4. A long distance beam clamping device according to claim 3, characterized in that: The non-movable end of the clamping arm (2) is hinged to the connecting crossbeam (1), and the output end of the clamping cylinder (3) is transmission-connected to the curved arm body of the clamping arm (2), so that the movable end of the clamping arm (2) can rotate along the hinge point with the connecting crossbeam (1) as the center of the circle; the non-output end of the clamping cylinder (3) is fixed on the connecting crossbeam (1).

5. A long distance beam clamping device according to claim 4, characterized in that: The pressing block (4) is in the shape of an elongated strip, and two ends of one of the pressing blocks (4) are respectively fixedly connected to two pressing arms (2).

6. A long distance beam clamping device according to claim 1, characterized in that: A plurality of the clamping mechanisms are arranged along the length direction of the connecting crossbeam (1).

7. A long distance beam clamping device according to claim 3, characterized in that: The device also comprises a positioning mechanism, which comprises a positioning block (10) and a positioning cylinder (9) for driving the positioning block (10) to move up and down.

8. A long distance beam clamping device according to claim 7, characterized in that: The positioning cylinder (9) and the pressing cylinder (3) can be connected to a controller with a timer.

Images