Aluminum strip joining mechanism

Abstract

The application discloses an aluminum strip splicing mechanism and relates to the technical field of welding equipment. The aluminum strip splicing mechanism comprises two clamping devices which are arranged at intervals, the two clamping devices are respectively used for clamping a position close to a tail end of a front roll of aluminum strip and a position close to a head end of a rear roll of aluminum strip, a lower pressing seat is arranged between the two clamping devices in a liftable mode, and the lower pressing seat is used for pressing the tail end of the front roll of aluminum strip and the head end of the rear roll of aluminum strip downwards. A welding device is movably arranged above the lower pressing seat, the welding device is used for welding the tail end of the front roll of aluminum strip and the head end of the rear roll of aluminum strip, a welding channel is formed in the lower pressing seat, and an exposure window is formed in the lower side of the lower pressing seat. The aluminum strip is flat, the end heads are aligned, and there is no overlap through the control of the lower pressing seat. Meanwhile, the welding sputtering object can be blocked. In addition, the lower pressing seat has the function of cutting the aluminum strip in cooperation with a cutter, has the function of one thing serving multiple purposes, and is high in practicability.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and specifically to an aluminum strip splicing mechanism. Background Technology

[0002] In aluminum-plastic composite pipe production lines, because aluminum strips are packaged in coils, the production line needs to operate continuously without interruption. This necessitates connecting one end of the two coils of aluminum strip when changing coils to ensure continuous production. Existing technologies typically use spot welding with lap joints, but this method usually has the following drawbacks:

[0003] 1. Using an overlapping welding method can easily cause the aluminum strip connection area to thicken, which can damage the forming mold when the aluminum strip passes through the subsequent aluminum tube process mold.

[0004] 2. The ends of the aluminum strip are prone to bending and deformation during the welding process, which makes it impossible for the new and old aluminum strip ends to be accurately aligned, resulting in poor welding quality.

[0005] 3. During the welding process of aluminum strip, some spatter will be generated at the welding point. The spatter is easy to splash onto the surface of the aluminum strip. At this time, the spatter is at a high temperature, which will cause damage to the surface of the aluminum strip and affect the quality of subsequent production and forming. Summary of the Invention

[0006] The purpose of this invention is to provide an aluminum strip splicing mechanism to solve the technical problems mentioned in the background art.

[0007] The present invention is achieved through the following technical solution.

[0008] An aluminum strip splicing mechanism includes two clamping devices spaced apart, which are respectively used to clamp the end portion of a previous roll of aluminum strip and the beginning portion of a subsequent roll of aluminum strip. A lower pressure seat is vertically and flexibly arranged between the two clamping devices, which is used to press down on the end portion of the previous roll of aluminum strip and the beginning portion of the subsequent roll of aluminum strip. A welding device is movably arranged above the lower pressure seat, which is used to weld the end portion of the previous roll of aluminum strip and the beginning portion of the subsequent roll of aluminum strip.

[0009] The lower pressure seat is provided with a welding channel along the second direction, and an exposure window connected to the welding channel is opened on the lower side of the lower pressure seat. The exposure window extends along the second direction so that the end of the previous roll of aluminum strip and the beginning of the next roll of aluminum strip are exposed under the welding device.

[0010] As a further improvement of the present invention, the clamping device includes a base and a mounting seat disposed on one side of the base. The mounting seat has a limiting surface on the side near the base, and the limiting surfaces of the mounting seats of the two clamping devices are located in the same plane.

[0011] The upper top plate has one end connected to the upper end of the mounting base and the other end extending horizontally towards one side of the base, so that there is a preset distance between the upper top plate and the base;

[0012] A pressure plate, which can be lifted and lowered between the upper top plate and the base, is used to press the aluminum strip.

[0013] As a further improvement of the present invention, a cutter is also included, which is vertically and vertically disposed below the lower pressure seat, and the cutter can be inserted into the exposure window, wherein the side wall of the cutter is in contact with the side wall of the exposure window when inserted into the exposure window.

[0014] As a further improvement of the present invention, the upper end face of the cutter and the upper end face of the base are located in the same horizontal plane.

[0015] As a further improvement of the present invention, the base can slide back and forth along a third direction to drive the end of the previous roll of aluminum strip and the beginning of the next roll of aluminum strip closer to each other.

[0016] As a further improvement of the present invention, the welding channel has a preset angle with the sliding direction of the base.

[0017] As a further improvement of the present invention, a pressing plate is provided on the lower side of the pressing seat, and a lifting rod is provided on the pressing plate to pass upward into the welding channel. A compression spring is provided on the lifting rod between the pressing plate and the lower pressing seat.

[0018] As a further improvement of the present invention, a positioning seat is provided on one side of the cutter, and a positioning hole is provided on the positioning seat. A positioning post is provided on the lower side of the pressing seat. The outer diameter of the positioning post is adapted to the inner diameter of the positioning hole. The positioning post is aligned with the positioning hole so that the positioning post can be inserted into the positioning hole when the pressing seat descends to the predetermined position.

[0019] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:

[0020] 1. In this application, the aluminum strip is pressed down by the lower pressure seat to restrict the bending deformation of the aluminum strip end during the welding process, so that the aluminum strip is in a flat state during the welding process and the aluminum strip ends on both sides can be aligned, thereby improving the welding quality of the aluminum strip.

[0021] 2. Because the two ends of the aluminum strip are pressed by the lower pressure seat, the aluminum strip is in a flat state. When they come close to each other, they abut against each other. After abutting, the aluminum strip is welded so that there is no overlap between the end of the previous roll of aluminum strip and the beginning of the next roll of aluminum strip, so as to avoid the aluminum strip joint from thickening and affecting subsequent production processes.

[0022] 3. When the lower pressure seat descends to press the aluminum strip and performs welding, the welding channel through which the welding gun passes and the side wall of the exposed window can block welding spatter, preventing welding spatter from splashing onto the surface of the aluminum strip and causing damage to the aluminum strip surface.

[0023] 4. This application includes a cutter that works in conjunction with a lower pressure seat to cut aluminum strips, ensuring that the cut ends of the two aluminum strips can meet smoothly when they come together, thereby improving the welding quality.

[0024] 5. In this application, the pressure seat not only controls the flatness, end alignment and non-overlap of the aluminum strip, but also blocks welding spatter. In addition, the pressure seat can also work with the cutter to cut the aluminum strip. It has multiple functions and high practicality. Attached Figure Description

[0025] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings to aid in understanding the objectives and advantages of the present invention, wherein:

[0026] Figure 1 This is a perspective view of an embodiment of the present invention;

[0027] Figure 2 This is a top view of an embodiment of the present invention;

[0028] Figure 3 This is a front view of an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the lower pressure seat structure in an embodiment of the present invention.

[0031] The following components are labeled in the diagram: 1. Workbench, 101. Aluminum strip, 2. Base, 3. Mounting seat, 4. Top plate, 5. First telescopic cylinder, 6. Limiting surface, 7. Welding torch, 8. Column, 9. Horizontal sliding seat, 10. Vertical sliding seat, 11. Lower pressure seat, 12. Lifting platform, 13. Welding channel, 14. Exposed window, 15. Pressure plate, 16. Cutter, 17. Positioning seat. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0033] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0034] refer to Figures 1 to 5 The embodiments of the present invention disclose:

[0035] An aluminum strip splicing mechanism includes a worktable 1. Two clamping devices are spaced apart on the worktable 1, respectively clamping the end portion of a previous roll of aluminum strip 101 and the beginning portion of a subsequent roll of aluminum strip 101. Specifically, each clamping device includes a base 2 and a mounting seat 3 disposed on one side of the base 2. An upper top plate 4 is disposed on the upper end of the mounting seat 3. One end of the upper top plate 4 is connected to the upper end of the mounting seat 3, while the other end extends horizontally towards the base 2, creating a preset distance between the upper top plate 4 and the base 2. A pressure plate is vertically movable between the upper top plate 4 and the base 2 to press the aluminum strip 101. A first telescopic cylinder 5 is disposed on the upper top plate 4. The output end of the first telescopic cylinder 5 passes between the upper top plate 4 and the base 2 and is connected to the upper end of the pressure plate, thereby controlling the lifting and lowering of the pressure plate to press the aluminum strip 101. Furthermore, in this embodiment… In this embodiment, the two bases 2 can slide back and forth along a third direction (as shown in the figure, left and right direction) to drive the end of the previous roll of aluminum strip 101 and the beginning of the next roll of aluminum strip 101 to move closer to each other. Specifically, a second telescopic cylinder (not shown in the figure) is provided in the workbench 1 along a third direction (left and right direction). The output end of the second telescopic cylinder is connected to the bottom of the base 2, so that when the second telescopic cylinder extends or retracts at the output end, it can drive the base 2 to move along a third direction (left and right direction). During operation, the aluminum strip 101 is controlled to be located between the base 2 and the pressure plate. Then, the pressure plate is controlled to descend, that is, to press the aluminum strip 101. Finally, the second telescopic cylinder is used to extend or retract to control the sliding of the base 2. At this time, the aluminum strip 101 clamped on the base 2 is forced to move towards the middle position of the two clamping devices, that is, the end of the previous roll of aluminum strip 101 and the beginning of the next roll of aluminum strip 101 move closer to each other to perform subsequent processes (welding).

[0036] During the installation of aluminum strip 101, if the two ends of aluminum strip 101 are not aligned, misalignment will occur when the end of the previous roll of aluminum strip 101 approaches the beginning of the next roll of aluminum strip 101, thus affecting the subsequent welding effect. Therefore, in this embodiment, the mounting base 3 has a limiting surface 6 on the side near the base 2, and the limiting surfaces 6 of the mounting base 3 of the two clamping devices are located in the same plane. Before the control plate moves downward to press the aluminum strip 101, the aluminum strip 101 is controlled to move towards the limiting surface 6, so that the aluminum strip 101... The side wall of strip 101 abuts against the limiting surface 6, and then the pressure plate is controlled to move downward. At this time, since the limiting surfaces 6 of the mounting seats 3 on both sides are in the same plane, the side wall of the end of the previous roll of aluminum strip 101 is aligned with the side wall of the beginning of the next roll of aluminum strip 101. At the same time, since the aluminum strips 101 have the same width, the two aluminum strips 101 on the side away from the limiting surface 6 are also aligned with each other (the ends of the aluminum strips 101 are aligned), so that the aluminum strips 101 can be accurately aligned during the installation process to avoid affecting the subsequent (welding) process.

[0037] A welding device is movably mounted above the lower pressure seat 11. This welding device is used to weld the end of the previous roll of aluminum strip 101 to the beginning of the next roll of aluminum strip 101, as shown in the figure. In this application, the welding device includes a welding torch 7. Specifically, a column 8 is mounted on the workbench 1 on one side of the clamping device. A horizontal sliding seat 9 is horizontally mounted on the column 8. A first slide rail is mounted on the horizontal sliding seat 9, and a vertical sliding seat 10 is mounted on the first slide rail. Simultaneously, a first drive motor is mounted on one side of the horizontal sliding seat 9. The first drive motor is connected to the vertical sliding seat 10 for driving the vertical sliding seat. 10 slides on the first slide rail; at the same time, a second slide rail is provided on the vertical slide seat 10, and a welding torch 7 is slidably arranged on the second slide rail. At the same time, a second drive motor is provided at the upper end of the vertical slide seat 10 to drive the welding torch 7 to slide in the vertical direction, thereby realizing the lifting function; the aluminum strip 101 can pass under the horizontal slide seat 9, and the output end of the welding torch 7 faces downward, specifically towards the end of the previous roll of aluminum strip 101 and the beginning of the next roll of aluminum strip 101, which are close to and attached to each other; the welding torch 7 is used to weld the end of the previous roll of aluminum strip 101 and the beginning of the next roll of aluminum strip 101.

[0038] Since the aluminum strip 101 is packaged in a coil, after a section of aluminum strip 101 is drawn out, and due to its inherent elasticity, this section of aluminum strip 101 will elastically return to its original position to a certain extent without external force. This section of aluminum strip 101 will be in a bent state without external force. Correspondingly, in this embodiment, the end of the previous roll of aluminum strip 101 and the beginning of the next roll of aluminum strip 101 will also be bent. During the process of the end of the previous roll of aluminum strip 101 and the beginning of the next roll of aluminum strip 101 approaching and adhering to each other, even if the two aluminum strips 101... Even when the sidewalls are aligned (in the width direction), there may still be situations where the ends of the two aluminum strips 101 are not vertically aligned (e.g., one aluminum strip 101 faces upwards and the other faces downwards), or there may be a gap between the ends of the two aluminum strips 101 (when both aluminum strips 101 are bent but have the same end height, when the ends of the two aluminum strips 101 come close together, the upper parts of the ends may be touching each other while the lower parts of the ends still have a gap), or the aluminum strips 101 may overlap (due to the bending of the aluminum strips 101). (Due to the difficulty in controlling the clamping length of the aluminum strip 101), in this application, a lower pressure seat 11 is vertically mounted between the two clamping devices. Specifically, a lifting platform 12 is provided on one side of the clamping device on the worktable 1. A lifting slide rail is vertically mounted on the lifting platform 12, and a sliding seat is vertically mounted on the lifting slide rail. One end of the lower pressure seat 11 is connected to the sliding seat. A drive motor is also provided on the worktable 1, and the drive motor is connected to the sliding seat to drive the sliding seat to move up and down. The worktable 1 is provided with a lower pressure seat... 11 is used to press down on the end of the previous roll of aluminum strip 101 and the beginning of the next roll of aluminum strip 101. Specifically, during operation, the pressing seat 11 moves downward and presses down on the end of the previous roll of aluminum strip 101 and the beginning of the next roll of aluminum strip 101. Since the lower side of the pressing seat 11 has a preset width, the part of the aluminum strip 101 that is pressed can be in a straight state, so that the end of the previous roll of aluminum strip 101 and the beginning of the next roll of aluminum strip 101 can be in a straight state and aligned with each other. That is, through the aforementioned arrangement, the aluminum strip 101 can be joined smoothly without overlap during the welding process.

[0039] In this embodiment, the lower pressure seat 11 has a welding channel 13, and the lower end of the welding device (welding torch 7) can slide in the welding channel 13. The welding channel 13 allows the lower end of the welding device to pass through in a first direction (as shown in the figure, along the vertical direction) and slide in a second direction (along the width direction of the aluminum strip). The lower side of the lower pressure seat 11 has an exposure window 14 that communicates with the welding channel 13. The exposure window 14 extends along the second direction so that the end of the previous roll of aluminum strip 101 and the beginning of the next roll of aluminum strip 101 are exposed under the welding device. The exposure window 14 allows the welding end of the welding device (welding torch 7) to be exposed. The welding function can be achieved by welding the end of the previous roll of aluminum strip 101 (the part to be welded) to the beginning of the next roll of aluminum strip 101 (the part to be welded). In addition, a certain amount of welding spatter will be generated during the welding process. At this time, the side wall of the exposure window 14 and the welding channel 13 can also be used to prevent the welding spatter from splashing onto the surface of the aluminum strip 101. That is, when the welding spatter is splashing, it will touch the side wall of the exposure window 14 and the inner wall of the welding channel 13, thereby limiting the welding spatter from splashing out of the pressure seat 11 and onto the surface of the aluminum strip 101, thereby avoiding damage to the surface of the aluminum strip 101 and improving the production quality of the product.

[0040] Furthermore, the lower pressure seat 11 is typically made of iron alloy, while the aluminum strip 101 has a lower hardness. If the lower pressure seat 11 quickly presses down directly onto the aluminum strip 101, the hard contact with the aluminum strip 101 can easily damage it, thus affecting the subsequent production quality. Therefore, a pressure plate 15 is provided on the lower side of the lower pressure seat 11. A lifting rod is provided on the pressure plate 15 that extends upwards into the welding channel 13. The end of the lifting rod that extends into the welding channel 13 is provided with a protective device. The lifting rod is equipped with a buffer spring located between the pressing plate 15 and the lower pressing seat 11. The pressing plate 15 avoids the exposure window 14. During the descent of the lower pressing seat 11, the pressing plate 15 will first contact the aluminum strip 101 and press it. At this time, the buffer spring can play a buffering role to prevent the lower pressing seat 11 from falling too fast and damaging the aluminum strip 101. The descent will stop when the aluminum strip 101 is in a straight state, thus completing the function of pressing the aluminum strip 101.

[0041] During production, the end face of the previous roll of aluminum strip 101 and the beginning face of the next roll of aluminum strip 101 may be irregularly shaped. If they are directly controlled to approach each other, poor contact of the aluminum strip 101 can easily occur, thus affecting the welding process. Based on this, a shearing device is also provided on the workbench 1 in this application and located between the two clamping devices to first shear the end of the aluminum strip 101 before welding it, thereby improving the welding quality of the aluminum strip 101. Specifically, the shearing device includes two cutters 16 arranged side by side and close to each other. The cutters 16 are movably mounted on the lower pressure seat 11 and can be inserted into the exposure window 14. When the cutter 16 is inserted into the exposure window 14, its sidewall is in contact with the sidewall of the exposure window 14. The workbench 1 is equipped with a shearing opening, which is connected to the interior of the workbench 1. The workbench 1 contains two telescopic cylinders (not shown in the figure), whose output ends are connected to the bottom of the two cutters 16, thereby driving each cutter 16 to rise and fall. When not rising, the upper surface of each cutter 16 is on the same horizontal plane as the upper surface of the base 2. Furthermore, shearing seats are provided on both sides of the shearing opening, aligned with the pressure plate 15. When the aluminum strip 101 is located between the lower pressure seat 11 and the cutter 16, the cutter 16 rises. During the rising process, the cutter 16 comes into contact with the side wall of the exposed window 14, generating a shearing force between them, thus achieving a shearing effect on the aluminum strip 101. After shearing, the aluminum strips 101 come together again, allowing the ends of the aluminum strips 101 to make direct, seamless contact, thereby improving welding quality.

[0042] The welding channel 13 has a preset angle with the sliding direction of the base 2 (20-30 degrees in this embodiment). Correspondingly, the exposed window 14 has a preset angle with the sliding direction of the base 2. More specifically, in this application, the lower pressure seat 11 has a preset angle with the sliding direction of the base 2. At the same time, in order to adapt to the exposed window 14, the welding channel (13) has a preset angle with the sliding direction of the base (2) along its extension direction (i.e., the second direction), so that the width direction of the aluminum strip 101 of the cutter 16 is at a certain angle, so that the cutting edge of the aluminum strip 101 and the side wall of the aluminum strip 101 have a certain angle, thereby lengthening the length of the cutting edge. If the aluminum strip 101 is welded at this time, the total welding length of the aluminum strip 101 is increased, thereby making the welding of the two aluminum strips 101 more reliable.

[0043] A positioning seat 17 is provided on one side of the cutter 16. A positioning hole is provided on the positioning seat 17. A positioning post is provided on the lower side of the pressure seat 11. The outer diameter of the positioning post is adapted to the inner diameter of the positioning hole. The positioning post is aligned with the positioning hole so that the positioning post can be inserted into the positioning hole when the pressure seat 11 descends to the predetermined position.

[0044] Working principle:

[0045] The working sequence in this embodiment is as follows:

[0046] 1. Install aluminum strip 101, control the side wall of aluminum strip 101 to abut against the limiting surface 6 of the mounting base 3, and then control the pressure plate of the clamping device so that the pressure plate cooperates with the base 2 to press the aluminum strip 101 tightly; in this step, the previous roll of aluminum strip 101 and the next roll of aluminum strip 101 are clamped by the clamping devices on both sides respectively.

[0047] 2. Control the base 2 to move towards the cutter 16, so that the end of the previous roll of aluminum strip 101 is above the cutter 16 and the beginning of the next roll of aluminum strip 101 is above the cutter 16. Then control the lower pressure seat 11 to descend, and then control the cutter 16 to rise, that is, to cut the aluminum strip 101. After the cutting is completed, control the lower pressure seat 11 to move upward and the cutter 16 to move downward to achieve reset.

[0048] 3. Control the base 2 to move towards the cutter 16 again, so that the ends of the two aluminum strips 101 come close to each other and fit together. Then control the pressure seat 11 to descend again to press the aluminum strips 101 tightly.

[0049] 4. Control the welding torch 7 to move into position and weld the joint at the ends of the two aluminum strips 101. After welding, control the welding torch 7 to reset and the lower pressure seat 11 to reset. At the same time, control the pressure plate to rise and reset, and stop pressing the aluminum strip 101. At this time, the aluminum strip 101 is connected.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An aluminum strip splicing mechanism, characterized in that: The device includes two clamping devices spaced apart, which are used to clamp the end of the previous roll of aluminum strip (101) and the beginning of the next roll of aluminum strip (101) respectively. A lower pressure seat (11) is provided between the two clamping devices and can be raised and lowered. The lower pressure seat (11) is used to press down on the end of the previous roll of aluminum strip (101) and the beginning of the next roll of aluminum strip (101). A welding device is movably provided above the lower pressure seat (11) and is used to weld the end of the previous roll of aluminum strip (101) and the beginning of the next roll of aluminum strip (101). The lower pressure seat (11) is provided with a welding channel (13) along the second direction, and the lower pressure seat (11) has an exposure window (14) connected to the welding channel (13) on its lower side. The exposure window (14) extends along the second direction so that the end of the previous roll of aluminum strip (101) and the beginning of the next roll of aluminum strip (101) are exposed under the welding device. The clamping device includes a base (2) and a mounting seat (3) disposed on one side of the base (2). The mounting seat (3) has a limiting surface (6) on the side close to the base (2), and the limiting surfaces (6) of the mounting seats (3) of the two clamping devices are located in the same plane. The upper top plate (4) is connected at one end to the upper end of the mounting base (3) and extends horizontally towards the base (2) at the other end, so that there is a preset distance between the upper top plate (4) and the base (2); A pressure plate, which can be raised and lowered between the upper top plate (4) and the base (2), is used to press the aluminum strip (101). It also includes a cutter (16), which is elliptical and scissor-mounted under the lower pressure seat (11). The cutter (16) can be inserted into the exposure window (14). When the cutter (16) is inserted into the exposure window (14), the side wall of the cutter (16) is in contact with the side wall of the exposure window (14). When the aluminum strip (101) is located between the lower pressure seat (11) and the cutter (16), the cutter (16) rises and is in contact with the side wall of the exposure window (14) during the rising process, generating a shearing force between the two, thereby achieving a shearing effect on the aluminum strip (101). A pressing plate (15) is provided on the lower side of the lower pressing seat (11). A lifting rod is provided on the pressing plate (15) and extends upward into the welding channel (13). A buffer spring is provided on the lifting rod between the pressing plate (15) and the lower pressing seat (11). A positioning seat (17) is provided on one side of the cutter (16), and a positioning hole is provided on the positioning seat (17). A positioning post is provided on the lower side of the pressure seat (11). The outer diameter of the positioning post is adapted to the inner diameter of the positioning hole. The positioning post is aligned with the positioning hole so that the positioning post can be inserted into the positioning hole when the pressure seat (11) descends to the predetermined position.

2. The aluminum strip splicing mechanism according to claim 1, characterized in that: The upper surface of the cutter (16) and the upper surface of the base (2) are located in the same horizontal plane.

3. The aluminum strip splicing mechanism according to claim 1, characterized in that: The base (2) can slide back and forth along a third direction to bring the end of the previous roll of aluminum strip (101) and the beginning of the next roll of aluminum strip (101) closer to each other.

4. The aluminum strip splicing mechanism according to claim 3, characterized in that: The welding channel (13) has a preset angle with the sliding direction of the base (2) along its extension direction.

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