An automatic centering device for aluminum sheet and strip head

Abstract

This invention discloses an automatic alignment device for aluminum strip head, comprising a base, on which are mounted a head position detection mechanism for detecting the head position and a clamping and traversing mechanism for aligning the head. The head position detection mechanism and the clamping and traversing mechanism are electrically connected to a PLC electrical control system. A sewing machine for docking the aluminum strip head is mounted on the outer side of the base. The head position detection mechanism quickly determines the position of the strip deviation based on the aluminum strip width parameters provided by the machine. Through electrical control, it issues a command to the clamping and traversing mechanism to clamp the strip and correct it to the correct alignment position, completing closed-loop control and automatically correcting and aligning the head. Then, it works with the sewing machine to sew the head and tail of the two strip sections together, improving the strip quality. Automatic alignment improves work efficiency, saves time on head correction, and has a simple structure, low investment cost, and is easy to implement.

Description

Technical Field

[0001] This invention relates to the field of metal sheet and strip finishing equipment, specifically to an automatic centering device for aluminum sheet and strip head. Background Technology

[0002] In the field of aluminum sheet and strip finishing equipment, all finishing units commonly experience material head misalignment during tension-free feeding, requiring manual intervention. When dealing with thicker strips, correcting the material head consumes a significant amount of time, especially in continuous production lines with strict requirements for auxiliary time. Excessive auxiliary time can lead to unit downtime, severely impacting production efficiency. Therefore, we propose an automatic material head alignment device for aluminum sheets and strips. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide an automatic centering device for aluminum sheet and strip head. Automatic centering can improve work efficiency, save the time of correcting the head, and has a simple structure, low investment cost, and is easy to implement, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automatic centering device for aluminum sheet and strip head, comprising a base, wherein the base is provided with a head position detection mechanism for detecting the head position and a clamping and transverse movement mechanism for centering the head, the head position detection mechanism and the clamping and transverse movement mechanism are electrically connected to a PLC electrical control system, and a sewing machine for docking aluminum sheet and strip head is provided on the outside of the base.

[0005] As a preferred embodiment of the present invention, the material head position detection mechanism includes a base frame mounted on a base, a movable centering frame mounted on the base frame, a photoelectric switch mounted on the centering frame, and the photoelectric switch positioned above the aluminum sheet / strip.

[0006] As a preferred embodiment of the present invention, the base frame is provided with a linear guide rail and a centering cylinder, the centering moving frame is slidably mounted on the linear guide rail, the movable end of the centering cylinder is fixedly connected to the side surface of the centering moving frame, and the centering cylinder is also provided with a displacement sensor for detecting the moving distance of the centering moving frame.

[0007] As a preferred embodiment of the present invention, the centering moving frame is a C-shaped frame with its opening facing the aluminum plate strip, the photoelectric switch is installed at the end of the upper horizontal plate of the centering moving frame, and the movable end of the centering cylinder is fixedly connected to the end of the lower horizontal plate of the centering moving frame.

[0008] As a preferred embodiment of the present invention, the movable range of the centering frame is 150-1500mm.

[0009] As a preferred embodiment of the present invention, the clamping and transverse movement mechanism includes a frame, a transverse movement device, and a clamping device, wherein the frame is mounted on the transverse movement device and the clamping device is mounted on the frame.

[0010] As a preferred embodiment of the present invention, the transverse movement device includes a second linear guide rail and a transverse movement cylinder mounted on the upper surface of the base. The frame is slidably mounted on the second linear guide rail, and the movable end of the transverse movement cylinder is fixedly connected to the side surface of the frame.

[0011] As a preferred embodiment of the present invention, the clamping device includes two rollers mounted on the frame, wherein the lower roller is connected to the output shaft of a motor mounted on the side surface of the frame, and the upper roller is mounted on a lifting frame provided inside the frame. Two pressing cylinders are symmetrically arranged on both sides of the top of the frame, and the movable ends of the two pressing cylinders are fixedly connected to the two ends of the lifting frame, respectively.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the material head position detection mechanism quickly determines the position of the strip deviation based on the aluminum strip width parameters given by the unit, and through electrical control, gives instructions to the clamping and transverse movement mechanism to clamp the strip and center it in place, completing closed-loop control and automatically centering the material head. Then, in conjunction with the sewing machine, the material head and tail of the two strip sections are sewn together, which improves the strip quality. Automatic centering can improve work efficiency, save the time of correcting the material head, and has a simple structure, low investment cost, and is easy to implement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention;

[0014] Figure 2 These are the front view and top view of the material head position detection mechanism of the present invention;

[0015] Figure 3 These are the front and side views of the clamping and transverse movement mechanism of the present invention.

[0016] In the diagram: 1. Material head position detection mechanism, 11. Base frame, 12. Linear guide rail one, 13. Centering moving frame, 14. Photoelectric switch, 15. Centering cylinder, 16. Displacement sensor, 2. Clamping and transverse movement mechanism, 21. Linear guide rail two, 22. Frame, 23. Roller, 24. Pressing cylinder, 25. Motor, 26. Transverse movement cylinder, 3. PLC electrical control system, 4. Base, 5. Sewing machine. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-3 This invention provides a technical solution: an automatic alignment device for aluminum strip head, comprising a base 4, on which a head position detection mechanism 1 for detecting the head position and a clamping and transverse movement mechanism 2 for aligning the head are provided. The electrical components in the head position detection mechanism 1 and the clamping and transverse movement mechanism 2 are electrically connected to a PLC electrical control system 3. A sewing machine 5 for docking aluminum strip head is provided on the outside of the base 4. A head alignment device is provided in front of the sewing machine 5 to cooperate with the sewing machine 5 to sew the head and tail of two strip sections together.

[0019] Specifically, the material head position detection mechanism 1 includes a base frame 11 mounted on a base 4. A movable centering frame 13 is provided on the base frame 11. A photoelectric switch 14 is provided on the centering frame 13. The output end of the photoelectric switch 14 is electrically connected to the input end of the PLC electrical control system 3. The photoelectric switch 14 is located above the aluminum strip. The photoelectric switch 14 is used to detect the width position of the strip and transmit a corresponding signal to the PLC electrical control system 3. The PLC electrical control system 3 controls the clamping and transverse movement mechanism 2 to automatically center the material head of the strip.

[0020] In a preferred embodiment, the base frame 11 is provided with a linear guide rail 12 and a centering cylinder 15. The input end of the centering cylinder 15 is electrically connected to the output end of the PLC electrical control system 3. The centering moving frame 13 is slidably mounted on the linear guide rail 12. The movable end of the centering cylinder 15 is fixedly connected to the side surface of the centering moving frame 13. The centering cylinder 15 drives the centering moving frame 13 to slide on the linear guide rail 12, thereby adjusting the position of the photoelectric switch 14. This is used for detecting the head position of aluminum strips with different bandwidths, improving versatility.

[0021] The centering cylinder 15 is also equipped with a displacement sensor 16 for detecting the moving distance of the centering moving frame 13. The output terminal of the displacement sensor 16 is electrically connected to the input terminal of the PLC electrical control system 3. The displacement sensor 16 is used to detect the moving distance of the centering moving frame 13. The PLC electrical control system 3 calculates the distance that the centering moving frame 13 needs to move from the default position based on the input width of the incoming material strip. Then, it moves the centering moving frame 13 by controlling the switch of the centering cylinder 15. During the movement, the displacement sensor 16 detects the moving distance of the centering moving frame 13 and transmits a corresponding signal to the PLC electrical control system 3. When the PLC electrical control system 3 determines that the centering moving frame 13 has moved into place, it closes the centering cylinder 15, fixes the position of the centering moving frame 13, starts feeding, and detects whether the material head has deviated.

[0022] In a further preferred embodiment, the centering moving frame 13 is a C-shaped frame with its opening facing the aluminum sheet / strip. The photoelectric switch 14 is installed at the end of the upper horizontal plate of the centering moving frame 13, with its detection end facing the strip below. The movable end of the centering cylinder 15 is fixedly connected to the end of the lower horizontal plate of the centering moving frame 13. When the centering moving frame 13 moves under the drive of the centering cylinder 15, since its opening faces the aluminum sheet / strip, it can avoid contact with the centering moving frame 13 when the head of the aluminum sheet / strip shifts to one side of the centering moving frame 13, thus providing protection for both the device and the strip.

[0023] In the preferred embodiment, the movable range of the centering moving frame 13 is 150-1500mm, that is, the shortest distance between the detection end of the photoelectric switch 14 on the centering moving frame 13 and the centerline of the device is 150mm and the farthest distance is 1500mm. The device can automatically center and correct the material head of aluminum strip with a width of 300-3000mm.

[0024] The specific technical solution is that the clamping and transverse movement mechanism 2 includes a frame 22, a transverse movement device, and a clamping device. The frame 22 is mounted on the transverse movement device, and the clamping device is mounted on the frame 22. The transverse movement device includes a second linear guide rail 21 mounted on the upper surface of the base 4 and a transverse movement cylinder 26. The frame 22 is slidably mounted on the second linear guide rail 21. The movable end of the transverse movement cylinder 26 is fixedly connected to the side surface of the frame 22. The input end of the transverse movement cylinder 26 is electrically connected to the output end of the PLC electrical control system 3. The transverse movement cylinder 26 drives the frame 22 to move on the second linear guide rail 21. After the material head is clamped by the clamping device, it is moved and corrected for alignment.

[0025] In a preferred embodiment, the clamping device includes two rollers 23 mounted on the frame 22. The lower roller 23 is connected to the output shaft of a motor 25 mounted on the side surface of the frame 22. The motor 25 is electrically connected to a PLC electrical control system 3. The upper roller 23 is mounted on a lifting frame located inside the frame 22. Two pressing cylinders 24 are symmetrically arranged on both sides of the top of the frame 22. The input end of the pressing cylinder 24 is electrically connected to the output end of the PLC electrical control system 3. The movable ends of the two pressing cylinders 24 are fixedly connected to the two ends of the lifting frame. When it is necessary to clamp and center the material head, the PLC electrical control system 3 controls the two pressing cylinders 24 to extend synchronously, driving the lifting frame and the upper roller 23 to move downwards, cooperating with the lower roller 23 to clamp the material head. Then, the material head is moved in the corresponding direction by a transverse movement device to center the material head.

[0026] The working principle of this application is as follows: When the material head reaches the working position of the sewing machine 5 and is ready to sew, centering detection is performed. First, the PLC electrical control system 3 obtains the strip width from the unit system. Then, the PLC electrical control system 3 calculates the displacement of the centering moving frame 13 based on the strip width, and then controls the centering cylinder 15 to extend or shorten by the corresponding displacement. The centering moving frame 13 is connected to the centering cylinder 15, so that the centering moving frame 13 moves to the corresponding position. During the movement, the displacement sensor 16 detects the displacement of the centering moving frame 13 and transmits the corresponding signal to the PLC electrical control system 3. When the PLC electrical control system 3 determines that the centering moving frame 13 has moved into place, it closes the centering cylinder 15, fixes the position of the centering moving frame 13, and turns on the photoelectric switch 14 for detection. The photoelectric switch 14 of the edge measuring device determines two situations:

[0027] 1. When the photoelectric switch 14 reaches the bandwidth position, a signal is received, indicating that the strip has shifted towards the drive side. At this time, the PLC electrical control system 3 controls the pressing cylinder 24 to move downward, the roller 23 to press the strip, and then the lateral cylinder 26 moves towards the operating side until the signal from the photoelectric switch 14 is just lost, at which point the strip is centered.

[0028] 2. When the photoelectric switch 14 reaches the bandwidth position and there is no signal, it indicates that the strip has shifted to the operating side. At this time, the PLC electrical control system 3 controls the pressing cylinder 24 to move downward, the roller 23 to press the strip, and then the lateral cylinder 26 moves to the transmission side until the photoelectric switch 14 just receives a signal, at which point the strip is centered.

[0029] After the strip is aligned, the alignment moving frame 13 automatically retracts, and the sewing machine begins sewing. After sewing is completed, the pressing cylinder 24 and the transverse moving cylinder 26 return to their original positions.

[0030] This application is applicable to tensioning, cleaning, and continuous annealing line units. It centers the material head and tail at the front end of the sewing machine to obtain a good seam joint and ensure the straightness of the sewn strip. This device has a simple structure, good practicality, low equipment cost, and significant centering effect, basically meeting production needs and can be widely promoted.

[0031] It should be noted that this device can be installed in front of the sewing machine or disc shear in the unit. Its clamping and transverse movement device can assist the sewing machine in clamping and feeding the strip, and can also assist the disc shear in achieving the entry flattening function, making the implementation more economical and effective.

[0032] All parts not disclosed in this invention are prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic centering device for aluminum sheet and strip head, characterized in that: The system includes a base (4), on which a material head position detection mechanism (1) for detecting the position of the material head and a clamping and transverse movement mechanism (2) for centering the material head are provided. Both the material head position detection mechanism (1) and the clamping and transverse movement mechanism (2) are electrically connected to a PLC electrical control system (3). A sewing machine (5) for docking aluminum strip material heads is provided on the outside of the base (4). The material head position detection mechanism (1) includes a base frame (11) mounted on the base (4). A movable centering moving frame (13) is provided on the base frame (11). A photoelectric switch (14) is provided on the centering moving frame (13). The photoelectric switch (14) is located above the aluminum strip. A straight line is provided on the base frame (11). The centering cylinder (15) and the centering moving frame (13) are slidably mounted on the linear guide rail (12). The movable end of the centering cylinder (15) is fixedly connected to the side surface of the centering moving frame (13). The centering cylinder (15) is also equipped with a displacement sensor (16) for detecting the moving distance of the centering moving frame (13). The clamping and transverse movement mechanism (2) includes a frame (22), a transverse movement device, and a clamping device. The frame (22) is mounted on the transverse movement device, and the clamping device is mounted on the frame (22). The transverse movement device includes a linear guide rail (21) and a transverse movement cylinder (26) mounted on the upper surface of the base (4). The frame (22) is slidably mounted on the linear guide rail (21). The movable end of the transverse cylinder (26) is fixedly connected to the side surface of the frame (22); the clamping device includes two rollers (23) mounted on the frame (22), wherein the lower roller (23) is connected to the output shaft of the motor (25) mounted on the side surface of the frame (22), and the upper roller (23) is mounted on the lifting frame set inside the frame (22). Two pressing cylinders (24) are symmetrically arranged on both sides of the top of the frame (22), and the movable ends of the two pressing cylinders (24) are fixedly connected to the two ends of the lifting frame respectively; the PLC electrical control system (3) is configured to perform the following operations: when the material head moves to the working position of the sewing machine (5) to prepare for sewing, centering detection is performed; firstly, the PLC electrical control system... The control system (3) obtains the strip width from the unit system. Then, the PLC electrical control system (3) calculates the displacement of the centering moving frame (13) based on the strip width. Then, it controls the centering cylinder (15) to extend or shorten the corresponding displacement. The centering moving frame (13) is connected to the centering cylinder (15) so that the centering moving frame (13) moves to the corresponding position. During the movement, the displacement sensor (16) detects the displacement of the centering moving frame (13) and transmits the corresponding signal to the PLC electrical control system (3). When the PLC electrical control system (3) determines that the centering moving frame (13) has moved to the position, it closes the centering cylinder (15), fixes the position of the centering moving frame (13), and turns on the photoelectric switch (14) for detection.When the photoelectric switch (14) reaches the bandwidth position, a signal is received, indicating that the strip has shifted towards the drive side. At this time, the PLC electrical control system (3) controls the pressing cylinder (24) to move downward, the roller (23) to press the strip, and then the lateral cylinder (26) moves towards the operating side until the photoelectric switch (14) signal is just lost. At this time, the strip is centered. When the photoelectric switch (14) reaches the bandwidth position, no signal is received, indicating that the strip has shifted towards the operating side. At this time, the PLC electrical control system (3) controls the pressing cylinder (24) to move downward, the roller (23) to press the strip, and then the lateral cylinder (26) moves towards the drive side until the photoelectric switch (14) just receives a signal. At this time, the strip is centered.

2. The automatic centering device for aluminum sheet and strip head according to claim 1, characterized in that: The centering moving frame (13) is a C-shaped frame with its opening facing the aluminum plate strip. The photoelectric switch (14) is installed at the end of the upper horizontal plate of the centering moving frame (13). The movable end of the centering cylinder (15) is fixedly connected to the end of the lower horizontal plate of the centering moving frame (13).

3. The automatic centering device for aluminum sheet and strip head according to claim 2, characterized in that: The movable range of the centering moving frame (13) is 150-1500mm.

Images