Positioning and overturning workbench for longitudinal seam welding of sectional material

Abstract

A positioning and overturning workbench for profile longitudinal seam welding comprises rotating mechanisms arranged oppositely, a rotating workbench capable of overturning by 180 degrees is installed between the two rotating mechanisms, the middle of the rotating workbench is hollowed out, and a plurality of positioning and clamping mechanisms are installed in the length direction of the rotating workbench. All the positioning and clamping mechanisms can move in the length direction of the rotary workbench. The automatic welding machine has the advantages that due to the design of the rotary workbench, after one face of a workpiece is welded, the workpiece can be automatically turned over by 180 degrees through the rotary mechanism, the other face of the workpiece is welded, manual turning is not needed, the welding period is greatly shortened, and production efficiency is improved. Compared with the prior art, the welding line quality is guaranteed, the welding deformation problem is greatly reduced, the repair rate is effectively reduced, the production efficiency and the qualified rate are greatly improved, and due to the fact that the welding efficiency and quality are improved, and the labor input and the repair rate are reduced, the production cost can be effectively reduced, and the economic benefits and the market competitiveness of enterprises are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of profile welding positioning equipment, specifically a positioning and flipping worktable for longitudinal seam welding of profiles. Background Technology

[0002] In the current process of welding longitudinal beams or telescopic arms into rectangular tubes, the process is generally completed manually, including clamping, positioning, and welding. After two C-shaped or U-shaped workpieces are clamped together, they are welded into a rectangular longitudinal beam tube. This requires 3-4 people to turn the workpieces over and perform positioning, clamping, and welding operations. A single frame requires two rectangular longitudinal beam tubes, which requires 6-8 people to operate. The labor intensity of the workers is high, the positioning efficiency and accuracy are low, and the long working hours can easily lead to fatigue, resulting in substandard welding quality and even serious problems such as workpiece deformation, leading to an extremely high rework rate. Utility Model Content

[0003] The purpose of this utility model is to provide a positioning and flipping worktable for longitudinal seam welding of profiles, which replaces the traditional manual operation to achieve precise clamping, positioning and flipping of workpieces, reduces labor intensity while improving welding efficiency and quality, and solves the problems in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a positioning and flipping worktable for longitudinal seam welding of profiles, including a rotating mechanism arranged opposite to each other, a rotating worktable that can be rotated 180 degrees installed between the two sets of rotating mechanisms, the middle position of the rotating worktable is hollowed out, and a number of positioning and clamping mechanisms are installed along the length direction of the rotating worktable. Each positioning and clamping mechanism can move along the length direction of the rotating worktable. The positioning and clamping mechanism includes a positioning frame, a side pressure cylinder is installed on one side of the positioning frame, and an upper pressure cylinder that can move horizontally is installed on the upper part of the positioning frame. The piston rod of the side pressure cylinder extends to press the side of the workpiece against the positioning frame. After the upper pressure cylinder moves to the upper position of the workpiece, the piston rod extends to press the top surface of the workpiece. When the upper pressure cylinder moves to the upper part of the side pressure cylinder, the workpiece can be put into the interior of the positioning frame from the upper part of the positioning frame. The rotating mechanism includes a rotating machine base, within which a first motor is installed. A first gear is mounted on the output shaft of the first motor. A rotating disk is mounted on the side of the rotating machine base via bearings, wherein the inner ring of the bearing is fixed to the rotating machine base, and the rotating disk is fixedly mounted on the end face of the outer ring of the bearing. A gear ring that meshes with the first gear is also provided on the outer circumference of the outer ring of the bearing. The rotating worktable is mounted on the rotating disk via a connecting seat. The first motor, when started, drives the rotating disk and the rotating worktable to rotate. A rack and T-shaped guide rails arranged along the length direction are installed on the rotating worktable. A second motor is installed on each positioning and clamping mechanism. A second gear that meshes with the rack is provided on the output shaft of the second motor. A slider that cooperates with the T-shaped guide rails is installed at the bottom of the positioning frame in the positioning and clamping mechanism. When the piston rods of the side pressure cylinder and the upper pressure cylinder retract and no longer squeeze the workpiece, the second motor, when started, drives the positioning and clamping mechanism to move along the length direction of the rotating worktable. In the positioning and clamping mechanism, a horizontally arranged pin cylinder is installed on the upper part of the positioning frame. A horizontally arranged pin post is hinged to the piston rod end of the pin cylinder. A guide sleeve that mates with the pin post is provided on the upper part of the positioning frame. An upper pressure cylinder is installed on the pin post. When the piston rod of the pin cylinder extends, the upper pressure cylinder is located above the side pressure cylinder; when the piston rod of the pin cylinder retracts, the upper pressure cylinder is located above the workpiece. Corresponding to the position of the side pressure cylinder, a positioning side plate is installed on the other side of the positioning frame. A positioning base plate is also installed at the bottom of the positioning frame, allowing the upper pressure cylinder to move to a position above the positioning base plate.

[0005] The positive effects of this utility model are as follows: The positioning and flipping worktable for longitudinal seam welding of profiles described in this utility model includes two sets of rotating mechanisms arranged opposite each other and a rotating worktable in the middle that can be flipped 180 degrees. Several movable positioning and clamping mechanisms are installed on the rotating worktable. These mechanisms replace traditional manual methods for clamping and precisely positioning the workpiece, greatly reducing manpower input and the labor intensity of operators. Through the precise cooperation of the side-pressure cylinder and the upper-pressure cylinder in the positioning and clamping mechanism, high-precision positioning and firm clamping of the workpiece are achieved, avoiding deviations that may occur with manual positioning, ensuring accurate alignment of the welded joint, thereby improving welding quality and reducing welding defects and rework rates. The design of the rotating worktable allows the workpiece to be automatically flipped 180 degrees after one side is welded, enabling welding of the other side without manual turning, greatly shortening the welding cycle and improving production efficiency. The positioning and clamping mechanisms can move independently and automatically, automatically clearing the welding dead zone, allowing the weld to be continuous, effectively realizing automatic, dead-zone-free welding processing on the rotating worktable. This invention ensures weld quality and greatly reduces welding deformation, effectively lowering the rework rate and significantly improving production efficiency and pass rate. By improving welding efficiency and quality and reducing labor input and rework rate, this invention can effectively reduce production costs and improve the economic benefits and market competitiveness of enterprises. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of this utility model;

[0007] Figure 2 This is the front view of this utility model;

[0008] Figure 3 yes Figure 2 Top view;

[0009] Figure 4 This is a schematic diagram of the positioning and clamping mechanism;

[0010] Figure 5 This is a half-sectional view of the rotating mechanism;

[0011] Figure 6 This is a side view of the rotating mechanism;

[0012] Figure 7 This is a schematic diagram of the state of the positioning and clamping mechanism on the rotating mechanism after rotating 180 degrees. Detailed Implementation

[0013] The present invention describes a positioning and flipping worktable for longitudinal seam welding of profiles, such as... Figure 1-3As shown, it includes a rotating mechanism arranged opposite to each other, and a rotating worktable 1 that can be rotated 180 degrees is installed between the two sets of rotating mechanisms. The rotating mechanism can be an existing flipping machine, slewing bearing or other device with a rotating function, which can drive the rotating worktable 1 and the workpiece on it to rotate, so as to realize the welding connection of the top surface and the bottom surface of the workpiece.

[0014] The central part of the rotary worktable 1 is hollowed out so that after the rotary worktable 1 has rotated, the welding torch of the welding robot can reach the designated position on the workpiece for welding connection. To achieve workpiece positioning and clamping, several positioning and clamping mechanisms are installed along the length of the rotary worktable 1. Each positioning and clamping mechanism can move along the length of the rotary worktable 1 to make room for the mating area of ​​the clamping position on the workpiece, so as to achieve continuous welding of the weld seam on the workpiece and avoid the welding dead zone. The positioning and clamping mechanisms can move in sequence. Under the premise that at least two sets of positioning and clamping mechanisms are clamping the workpiece, the positioning and clamping mechanisms release the clamping of the workpiece and move to make room for the unwelded position. After welding is completed, the positioning and clamping mechanisms can move and reset to make room for continuous welding of the connection position blocked by other positioning and clamping mechanism positions.

[0015] like Figure 4 As shown, the positioning and clamping mechanism includes a positioning frame 2, which can move along the length of the rotary table 1. A side-pressure cylinder 3 is installed on one side of the positioning frame 2, and an upper-pressure cylinder 4, which can move horizontally, is installed on the upper part of the positioning frame 2. When the piston rod of the side-pressure cylinder 3 extends, it can press the side of the workpiece against the positioning frame 2. After the upper-pressure cylinder 4 moves to the upper position of the workpiece, the piston rod extends and can press the top surface of the workpiece, thereby realizing the clamping and positioning of the side and top surfaces of the workpiece.

[0016] When the upper pressure cylinder 4 moves to the upper part of the side pressure cylinder 3, the workpiece can be placed into the interior of the positioning frame 2 from the upper part of the positioning frame 2. The top of the positioning frame 2 forms an openable frame structure through the movement of the upper pressure cylinder 4. When the workpiece is inserted or removed, the upper pressure cylinder 4 moves to make room for the workpiece to be placed. After the workpiece is placed, the pin 18 is inserted into the guide sleeve 19 in the positioning frame 2. The upper pressure cylinder 4 moves to the upper position of the workpiece and extends the piston rod to press the workpiece, forming a relatively closed frame structure.

[0017] When using the above-mentioned device to weld two C-shaped or U-shaped workpieces, firstly, the upper pressure cylinder 4 is controlled to create space for the workpiece to be lowered, and the workpiece is hoisted into the positioning frame 2. Then, the upper pressure cylinder 4 moves above the workpiece, and the piston rods of the side pressure cylinders 3 and the upper pressure cylinder 4 of all positioning and clamping mechanisms extend, forming a clamping and positioning of the workpiece. Subsequently, welding is performed at the connection position of the workpiece. After welding is completed, with at least two sets of positioning and clamping mechanisms clamping the workpiece, the remaining positioning and clamping mechanisms release the clamping state of the workpiece and move along the length direction of the rotary table 1, making room for the unwelded butt joint area under the initial clamping position, thus achieving continuous welding on the workpiece. After the top weld of the workpiece is completed, the rotary mechanism drives the rotary table 1 and the workpiece clamped on it to rotate 180 degrees, so that the butt joint area at the bottom of the workpiece is on the upper side, and the welding operation of the top weld is repeated to achieve the welding connection at the bottom of the workpiece.

[0018] Furthermore, in order to achieve precise rotational control of the rotary table 1, such as... Figure 5 and Figure 6 As shown, the rotating mechanism may include a rotating machine base 5, in which a first motor 6 is installed, and a first gear 7 is installed on the output shaft of the first motor 6.

[0019] A rotating disk 9 is mounted on the side of the rotating machine base 5 via a bearing 8. The inner ring of the bearing 8 is fixed to the rotating machine base 5, and the rotating disk 9 is fixedly mounted on the end face of the outer ring of the bearing 8. The inner and outer rings of the bearing 8 can rotate relative to each other. A gear ring 10 that meshes with the first gear 7 is also provided on the outer circumference of the outer ring of the bearing 8. The rotating worktable 1 is mounted on the rotating disk 9 via a connecting seat 11. When the first motor 6 is started, it can drive the rotating disk 9 and the rotating worktable 1 to rotate, thereby realizing the flipping operation of the workpiece clamped on the rotating worktable 1.

[0020] Furthermore, to enable independent movement of each positioning and clamping mechanism along the length of the rotary table 1, a rack 12 and a T-shaped guide rail 13 arranged along the length direction can be installed on the rotary table 1. Each positioning and clamping mechanism is equipped with a second motor 14, and a second gear 15 meshing with the rack 12 is provided on the output shaft of the second motor 14. A slider 16 cooperating with the T-shaped guide rail 13 is installed at the bottom of the positioning frame 2 in the positioning and clamping mechanism. When the piston rods of the side pressure cylinder 3 and the upper pressure cylinder 4 retract and no longer squeeze the workpiece, the second motor 14 starts and drives the positioning and clamping mechanism to move along the length of the rotary table 1, making room for the unwelded butt joint area where the clamping position is located, thus realizing the continuous connection of the weld seam on the workpiece.

[0021] The sliding block 16 and the T-shaped guide rail 13 that work together can prevent the positioning and clamping mechanism from wobbling in the horizontal direction during movement, and will not shift in the vertical direction when the positioning and clamping mechanism rotates with the rotary table 1. This ensures that the position of the positioning and clamping mechanism on the rotary table 1 remains relatively unchanged before and after flipping, thereby improving the clamping and positioning accuracy of the workpiece.

[0022] Furthermore, to achieve the horizontal movement of the upper pressure cylinder 4, a horizontally arranged pin cylinder 17 can be installed on the upper part of the positioning frame 2 in the positioning and clamping mechanism. A horizontally arranged pin post 18 is hinged to the piston rod end of the pin cylinder 17. The upper part of the positioning frame 2 is provided with a guide sleeve 19 that cooperates with the pin post 18, and the pin post 18 can move horizontally within the guide sleeve 19. The upper pressure cylinder 4 is installed on the pin post 18. When the piston rod of the pin cylinder 17 extends, the pin post 18 drives the upper pressure cylinder 4 to move above the side pressure cylinder 3. At this time, the workpiece can enter and exit within the positioning frame 2. When the piston rod of the pin cylinder 17 retracts, the pin post 18 drives the upper pressure cylinder 4 to move above the workpiece, forming a relatively closed frame structure. After the piston rod of the upper pressure cylinder 4 extends, it cooperates with the side pressure cylinder 3 to achieve positioning and clamping of the workpiece.

[0023] Furthermore, corresponding to the position of the side pressure cylinder 3, a positioning side plate 20 can be installed on the other side of the positioning frame 2, and a positioning base plate 21 can also be installed at the bottom of the positioning frame 2. The upper pressure cylinder 4 can move to the position above the positioning base plate 21. The positioning side plate 20 and the positioning base plate 21 are detachably installed in the positioning frame 2 as positioning references for the workpiece. They can be adapted and replaced according to the size or actual shape of different types of workpieces to improve the applicability of the device and provide a precise clamping and positioning reference for the workpiece.

[0024] The positioning and flipping worktable for longitudinal seam welding of profiles described in this utility model has significant advantages in reducing labor intensity, improving welding efficiency and quality, and enhancing equipment flexibility and adaptability. It has broad application prospects and market value.

[0025] The technical solution of this utility model is not limited to the scope of the embodiments described herein. All technical contents not described in detail herein are publicly known technologies.

Claims

1. A positioning and flipping worktable for longitudinal seam welding of profiles, characterized in that: It includes a rotating mechanism arranged in opposite directions. A rotating worktable (1) capable of rotating 180 degrees is installed between the two rotating mechanisms. The middle part of the rotating worktable (1) is hollowed out. Several positioning and clamping mechanisms are installed along the length of the rotating worktable (1). Each positioning and clamping mechanism can move along the length of the rotating worktable (1). The positioning and clamping mechanism includes a positioning frame (2). A side pressure cylinder (3) is installed on one side inside the positioning frame (2). An upper pressure cylinder (4) capable of horizontal movement is installed on the upper part of the positioning frame (2). The piston rod of the side pressure cylinder (3) extends to press the side of the workpiece against the positioning frame (2). After the upper pressure cylinder (4) moves to the upper position of the workpiece, the piston rod extends to press the top surface of the workpiece. When the upper pressure cylinder (4) moves to the upper part of the side pressure cylinder (3), the workpiece can be put into the interior of the positioning frame (2) from the upper part of the positioning frame (2).

2. The positioning and flipping worktable for longitudinal seam welding of profiles according to claim 1, characterized in that: The rotating mechanism includes a rotating machine base (5), a first motor (6) is installed in the rotating machine base (5), a first gear (7) is installed on the output shaft of the first motor (6), and a rotating disk (9) is installed on the side of the rotating machine base (5) via a bearing (8). The inner ring of the bearing (8) is fixed on the rotating machine base (5), and the rotating disk (9) is fixedly installed on the end face of the outer ring of the bearing (8). A gear ring (10) that meshes with the first gear (7) is also provided on the outer circumference of the outer ring of the bearing (8). The rotating worktable (1) is installed on the rotating disk (9) via a connecting seat (11). When the first motor (6) is started, it can drive the rotating disk (9) and the rotating worktable (1) to rotate.

3. The positioning and flipping worktable for longitudinal seam welding of profiles according to claim 1, characterized in that: The rotary worktable (1) is equipped with a rack (12) and a T-shaped guide rail (13) arranged along the length direction. Each positioning and clamping mechanism is equipped with a second motor (14). The output shaft of the second motor (14) is provided with a second gear (15) that meshes with the rack (12). The bottom of the positioning frame (2) in the positioning and clamping mechanism is equipped with a slider (16) that cooperates with the T-shaped guide rail (13). When the piston rods of the side pressure cylinder (3) and the upper pressure cylinder (4) retract and no longer squeeze the workpiece, the second motor (14) starts and can drive the positioning and clamping mechanism to move along the length direction of the rotary worktable (1).

4. The positioning and flipping worktable for longitudinal seam welding of profiles according to claim 1, characterized in that: In the positioning and clamping mechanism, a horizontally arranged pin cylinder (17) is installed on the upper part of the positioning frame (2). A horizontally arranged pin post (18) is hinged to the piston rod end of the pin cylinder (17). A guide sleeve (19) that cooperates with the pin post (18) is provided on the upper part of the positioning frame (2). An upper pressure cylinder (4) is installed on the pin post (18). When the piston rod of the pin cylinder (17) extends, the upper pressure cylinder (4) is located above the side pressure cylinder (3). When the piston rod of the pin cylinder (17) retracts, the upper pressure cylinder (4) is located above the workpiece.

5. A positioning and flipping worktable for longitudinal seam welding of profiles according to claim 1, characterized in that: Corresponding to the position of the side pressure cylinder (3), a positioning side plate (20) is installed on the other side of the positioning frame (2), and a positioning base plate (21) is also installed at the bottom of the positioning frame (2). The upper pressure cylinder (4) can move to the position above the positioning base plate (21).

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