A kind of clamping device for rotating shaft of a film laminating machine

Abstract

The utility model relates to a kind of clamping devices for laminating machine rotating shaft, including support, clamping mechanism and lifting mechanism;Two groups of lifting mechanism are installed on support;Clamping mechanism is set on lifting mechanism, and lifting mechanism limits the lifting path of at least a part of clamping mechanism;Clamping mechanism includes arc clamping block, baffle and first driving part;Arc clamping block is hinged to baffle;First driving part is transmission connection in arc clamping block;For fixed rotating shaft between arc clamping block and baffle, solve the rotating shaft transfer in prior art more rely on artificial handling or simple lifting aid, artificial handling not only labor intensity is great, efficiency is low, and rotating shaft weight is heavy when easy to appear the risk of slip, lead to equipment shutdown or personnel safety accident, while simple lifting aid has the problem of poor clamping stability, positioning accuracy is insufficient, easy to cause rotating shaft eccentric offset, affect subsequent laminating processing film flatness technical problem.

Description

Technical Field

[0001] This utility model relates to the field of coating machines, and in particular to a clamping device for the rotating shaft of a coating machine. Background Technology

[0002] In the film production and processing of a coating machine, the rotating shaft, as a core transmission component, needs to be frequently moved between different workstations such as the unwinding area, processing area, and rewinding area. In existing technologies, the transfer of the rotating shaft mostly relies on manual handling or simple lifting tools. Manual handling is not only labor-intensive and inefficient, but also prone to slippage when the rotating shaft is heavy, leading to equipment downtime or personnel safety accidents. Simple lifting tools, on the other hand, have problems with poor clamping stability and insufficient positioning accuracy, which can easily cause the rotating shaft to deviate and affect the flatness of the film in subsequent coating processes. Utility Model Content

[0003] This application provides a clamping device for the rotating shaft of a coating machine, which solves the problem that in the prior art, the transfer of the rotating shaft mostly relies on manual handling or simple lifting tools. Manual handling is not only labor-intensive and inefficient, but also prone to slippage when the rotating shaft is heavy, leading to equipment downtime or personnel safety accidents. At the same time, simple lifting tools have problems with poor clamping stability and insufficient positioning accuracy, which can easily cause the rotating shaft to deviate and affect the flatness of the film in subsequent coating processing.

[0004] The technical solution adopted in this application is as follows.

[0005] A clamping device for a rotating shaft of a coating machine includes a bracket, a clamping mechanism, and a lifting mechanism; two sets of the lifting mechanisms are mounted on the bracket; the clamping mechanism is disposed on the lifting mechanism, and the lifting mechanism defines at least a portion of the lifting path of the clamping mechanism; the clamping mechanism includes an arc-shaped clamping block, a baffle, and a first driving member; the arc-shaped clamping block is hinged to the baffle; the first driving member is throttlely connected to the arc-shaped clamping block; the arc-shaped clamping block and the baffle are used to fix the rotating shaft.

[0006] As a further improvement to the above technical solution: A further technical solution is as follows: the clamping mechanism further includes a pin seat, a mounting base, and a hinge joint; the baffle is disposed on the mounting base; the pin seat is disposed on the baffle; the arc-shaped clamping block is hinged to the pin seat via a pin; the first driving component is a cylinder; the hinge joint is disposed on the piston end of the first driving component; the hinge joint is hinged to the arc-shaped clamping block via a pin; the base of the first driving component is fixed to the baffle via a hinge; the mounting base is disposed on the lifting mechanism.

[0007] A further technical solution is as follows: the lifting mechanism includes a fixed frame, a lifting block, a slide rail, and a second driving component; the fixed frame is mounted on the bracket; the slide rail is mounted on the lifting block; the fixed frame is sleeved on the lifting block, and the inner side of the fixed frame is slidably connected to the slide rail; the second driving component is mounted on the outer side of the fixed frame; the second driving component is a cylinder; the piston end of the second driving component and the bottom end of the lifting block are both connected to the mounting base.

[0008] A further technical solution is that a reinforcing rib is provided between the baffle and the mounting base.

[0009] One or more technical solutions provided in this application have at least the following technical effects or advantages: 1. Through the combined design of the bracket, clamping mechanism, and lifting mechanism, the integrated coordination of shaft clamping and lifting actions is achieved. Two sets of lifting mechanisms are symmetrically installed on the bracket, which can synchronously drive the two sets of clamping mechanisms to accurately align the two ends of the shaft, avoiding the shaft tilting problem caused by single-end clamping; the lifting mechanism limits the lifting path of the clamping mechanism, ensuring that the clamping mechanism always approaches or moves away from the shaft along the preset trajectory, eliminating shaft collisions caused by lifting deviation. Compared with traditional manual handling, this structure eliminates the need for manual intervention in the shaft fixing and lifting process, reducing the labor intensity of operators, avoiding the safety hazard of shaft slippage during manual operation, and providing a stable prerequisite for the subsequent sliding device to drive the horizontal transfer of the shaft, significantly improving the overall efficiency of shaft transfer.

[0010] 2. The clamping mechanism, through a multi-component collaborative design, significantly improves the stability and adaptability of the rotating shaft clamping. The pin seat provides a stable pivot point for the arc-shaped clamping block, and together with the hinge joint, converts the linear driving force of the first drive component into the rotational clamping force of the arc-shaped clamping block, allowing the arc-shaped clamping block to smoothly conform to the outer circumference of the rotating shaft. The hinged design of the base of the first drive component and the baffle can adaptively adjust the angle with the rotation of the arc-shaped clamping block, avoiding the drive component from jamming under force and ensuring smooth clamping action. The cylinder drive method has a fast response speed and can accurately control the clamping force according to the diameter of the rotating shaft, preventing the rotating shaft from shifting during transfer due to excessively loose clamping, and also preventing damage to the rotating shaft surface due to excessively tight clamping. The mounting base provides a stable connection carrier for the baffle and the lifting mechanism, ensuring that the clamping mechanism and the lifting mechanism move synchronously, further ensuring clamping stability. In addition, this structure can be adapted to the rotating shafts of different diameter coating machines by adjusting the curvature of the arc-shaped clamping block or replacing it with arc-shaped clamping blocks of different specifications, expanding the applicability of the device.

[0011] 3. The sliding cooperation structure between the lifting mechanism's slide rail and the fixed frame provides high-precision guiding constraints for the lifting block, ensuring no lateral swaying when the lifting block drives the mounting base and clamping mechanism to rise and fall. This guarantees that the rotating shaft remains horizontal throughout the lifting process, preventing interference between the rotating shaft and other components due to unstable lifting. The second drive component is directly connected to the mounting base, and the bottom end of the lifting block is simultaneously connected to the mounting base, forming a dual drive support. This enhances the load-bearing capacity of the lifting action, stably driving the lifting of heavy rotating shafts and meeting the transfer needs of rotating shafts of different specifications of coating machines. Simultaneously, the reinforcing ribs between the baffle and the mounting base effectively enhance the connection strength, preventing baffle deformation due to concentrated force when clamping the rotating shaft and extending the service life of the clamping mechanism. The structural stability of the baffle further ensures the reliability of the rotating shaft clamping, preventing increased clamping gaps caused by baffle deformation, ensuring the rotating shaft remains stable and fixed throughout the entire transfer process, and improving the accuracy of rotating shaft transfer. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a clamping device for a coating machine shaft in this utility model.

[0013] Figure 2 This is a partial structural diagram illustrating the clamping mechanism in this utility model.

[0014] Figure 3 This is a partial structural diagram illustrating the lifting mechanism in this utility model.

[0015] In the figure: 1. Bracket; 2. Clamping mechanism; 21. Arc-shaped clamping block; 22. Baffle; 23. First driving component; 24. Pin seat; 25. Mounting seat; 26. Hinge joint; 3. Lifting mechanism; 31. Fixed frame; 32. Lifting block; 33. Slide rail; 34. Second driving component. Detailed Implementation

[0016] This application provides a clamping device for the rotating shaft of a coating machine, which solves the problem that in the prior art, the transfer of the rotating shaft mostly relies on manual handling or simple lifting tools. Manual handling is not only labor-intensive and inefficient, but also prone to slippage when the rotating shaft is heavy, leading to equipment downtime or personnel safety accidents. At the same time, simple lifting tools have problems with poor clamping stability and insufficient positioning accuracy, which can easily cause the rotating shaft to deviate and affect the flatness of the film in subsequent coating processing.

[0017] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows: To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] A clamping device for the rotating shaft of a coating machine, such as Figures 1-3 As shown, including The support 1 is the supporting base of the device and is integrally formed from high-strength alloy steel. Two sets of lifting mechanisms 3 are symmetrically arranged along the length of the support 1, and the fixing frame 31 of the lifting mechanism 3 is fixed to the side wall of the crossbeam of the support 1 by bolt assembly. The clamping mechanism 2 is rigidly connected to the bottom end of the lifting block 32 of the lifting mechanism 3 through its mounting base 25, so that the lifting mechanism 3 can drive the clamping mechanism 2 to rise and fall along a preset trajectory. That is, the lifting mechanism 3 defines the lifting path of the clamping mechanism 2, which is a straight line perpendicular to the crossbeam of the support 1. Mounting base 25 is an L-shaped plate structure. Its horizontal section is fixed to the bottom end of lifting block 32 by welding, and its vertical section is used to assemble baffle 22. The baffle 22 is a rectangular steel plate, which is fixed to the outer wall of the vertical section of mounting base 25 by bolt assembly. Triangular reinforcing ribs are welded between baffle 22 and the vertical section of mounting base 25. These reinforcing ribs are used to enhance the bending strength of baffle 22 and prevent baffle 22 from deforming due to force concentration when clamping the rotating shaft. The pin seat 24 has a double-ear plate structure and is fixed to the middle area of ​​the outer wall of the baffle 22 by welding. The two ear plates of the pin seat 24 have coaxial pin holes. One end of the arc-shaped clamping block 21 has a notch that matches the pin seat 24. The arc-shaped clamping block 21 and the pin seat 24 are pivotally connected by the pin through the notch of the arc-shaped clamping block 21 and the pin hole of the pin seat 24, so that the arc-shaped clamping block 21 can rotate around the pin axis. The first driving component 23 is a single-rod cylinder. The bottom of its cylinder body is pivotally connected to the lower part of the outer wall of the baffle 22 via a hinge seat. The end of the piston rod is pivotally connected to the middle of the outer wall of the arc-shaped clamp 21 via a hinge joint 26. The hinge joint 26 is a fisheye bearing structure, which can compensate for the installation error between the first driving component 23 and the arc-shaped clamp 21 and ensure that the driving force is transmitted along the rotation tangent direction of the arc-shaped clamp 21. The inner arc surface of the arc-shaped clamp 21 is adapted to the curvature of the outer peripheral surface of the coating machine shaft, and the arc surface is pasted with a nitrile rubber anti-slip pad to increase the static friction between the arc-shaped clamp 21 and the shaft and prevent the shaft from slipping after clamping. An arc-shaped clamping block 21 and a baffle 22 form a clamping cavity for accommodating the rotating shaft. When the arc-shaped clamping block 21 rotates around the pin seat 24 toward the baffle 22, the volume of the clamping cavity decreases until the inner arc surface of the arc-shaped clamping block 21 and the inner wall of the baffle 22 press together against the outer circumferential surface of the rotating shaft, thereby achieving the clamping and fixing of the rotating shaft. The fixed frame 31 is a U-shaped channel steel structure with its opening facing outwards. It is fixed to the side wall of the crossbeam of the support 1 by bolt assembly. The lifting block 32 is a rectangular block structure with its two side walls fixed to the slide rail 33 by bolt assembly. The slide rail 33 is a ball-bearing linear slide rail, and its length direction is consistent with the height direction of the fixed frame 31. The inner side wall of the fixed frame 31 is provided with a sliding groove that matches the slide rail 33. The slide rail 33 is embedded in the sliding groove and forms a sliding fit, so that the lifting block 32 can slide along the height direction of the fixed frame 31. The second driving component 34 is a double-rod cylinder. Its cylinder body is fixed to the top of the outer side of the fixed frame 31 through an angle bracket. The end of the piston rod is pivotally connected to the upper surface of the horizontal section of the mounting base 25 through a floating joint. The bottom end of the lifting block 32 is fixed to the upper surface of the horizontal section of the mounting base 25 by welding, forming a linkage structure of "second driving component 34-lifting block 32-mounting base 25", which ensures that the extension and retraction of the second driving component 34 can synchronously drive the lifting block 32 and the mounting base 25 to rise and fall. The bottom four corners of the bracket 1 are fixed to the slider of the sliding device by bolt assembly. The sliding device adopts an electric linear guide rail module. Its guide rail is laid along the station spacing direction of the coating machine, so that the sliding device can drive the bracket 1 and the whole set of clamping devices to move horizontally along the length of the guide rail, realizing the transfer of the rotating shaft between different stations.

[0019] Working principle: Initial positioning stage: After the device is powered on, the sliding device drives the bracket 1 to move along the guide rail to the initial placement area of ​​the rotating shaft. At this time, the clamping mechanism 2 is in the initial open state: the piston rod of the first driving member 23 retracts, and pulls the arc-shaped clamping block 21 to rotate outward around the pin axis of the pin seat 24 through the hinge joint 26, so that the clamping cavity volume between the arc-shaped clamping block 21 and the baffle 22 is maximized; at the same time, the lifting mechanism 3 is in the high position: the piston rod of the second driving member 34 retracts, and drives the lifting block 32 to slide upward along the slide groove of the fixed frame 31 to the limit position. The clamping mechanism 2 rises synchronously with the lifting block 32, ensuring that there is enough lifting space between the clamping mechanism 2 and the rotating shaft of the initial placement area to avoid interference. As the clamping mechanism 2 approaches the rotating shaft: the control system sends a drive signal to the second drive member 34, the piston rod of the second drive member 34 extends, and pushes the mounting base 25 downward through the floating joint. The mounting base 25 drives the lifting block 32 to slide downward along the sliding mating surface of the slide rail 33 and the fixed frame 31. The clamping mechanism 2 descends synchronously with the mounting base 25 until the clamping cavity between the arc-shaped clamping block 21 and the baffle 22 is aligned with the end of the rotating shaft, and the end of the rotating shaft extends into the clamping cavity. At this time, the displacement sensor on the mounting base 25 feeds back a signal, the second drive member 34 stops moving, and the clamping mechanism 2 completes the initial alignment with the rotating shaft.

[0020] During the shaft clamping and fixing stage: After receiving the signal from the displacement sensor, the control system sends a drive signal to the first drive member 23. The piston rod of the first drive member 23 extends and pushes the arc-shaped clamping block 21 to rotate around the pin axis of the pin seat 24 toward the baffle 22 through the hinge joint 26. As the arc-shaped clamping block 21 rotates, the volume of the clamping cavity gradually decreases until the anti-slip pad on the inner side of the arc-shaped clamping block 21 and the inner side wall of the baffle 22 jointly press against the outer circumference of the shaft. When the air pressure of the first drive member 23 reaches the preset threshold, the pressure sensor feeds back a signal, the first drive member 23 stops moving, the shaft is rigidly clamped, and the static friction of the anti-slip pad can prevent the shaft from moving axially or radially. During the shaft lifting and horizontal transfer stage: After the shaft is clamped and fixed, the control system sends a drive signal to the second drive component 34 again. The piston rod of the second drive component 34 retracts, driving the mounting base 25, the lifting block 32 and the clamped shaft to rise synchronously until a certain safe distance is formed between the bottom end of the shaft and the support surface of the initial placement area to avoid friction between the shaft and the support surface during the transfer process. Then the sliding device is activated, and its servo motor drives the slider to move along the guide rail, thereby driving the bracket 1, the lifting mechanism 3, the clamping mechanism 2 and the shaft to move horizontally towards the target workstation. During the sliding process, the sliding cooperation between the slide rail 33 and the fixed frame 31 ensures that the clamping mechanism 2 does not shake and the shaft maintains a horizontal posture.

[0021] Rotary shaft placement and device reset stage: When the sliding device transports the rotary shaft to the target workstation, the servo motor stops working, and the braking component of the sliding device locks the slider position; the control system sends a drive signal to the second drive member 34, the piston rod of the second drive member 34 extends, driving the rotary shaft to slowly descend until the rotary shaft is placed on the support seat of the target workstation; then the control system sends a drive signal to the first drive member 23, the piston rod of the first drive member 23 retracts, the arc-shaped clamping block 21 rotates outward around the pin seat 24, the clamping cavity volume increases, and the clamping of the rotary shaft is released; finally, the piston rod of the second drive member 34 retracts, driving the clamping mechanism 2 to rise and reset, the sliding device drives the bracket 1 back to the initial placement area, waiting for the next clamping and transfer operation, thus completing a complete work cycle.

[0022] Beneficial effects: 1. Through the combined design of bracket 1, clamping mechanism 2, and lifting mechanism 3, the integrated coordination of shaft clamping and lifting actions is achieved. Two sets of lifting mechanisms 3 are symmetrically installed on bracket 1, which can synchronously drive the two sets of clamping mechanisms 2 to accurately align the two ends of the shaft, avoiding the shaft tilting problem caused by single-end clamping; the lifting mechanism 3 limits the lifting path of the clamping mechanism 2, ensuring that the clamping mechanism 2 always approaches or moves away from the shaft along the preset trajectory, eliminating shaft collisions caused by lifting deviation. Compared with traditional manual handling, this structure does not require manual intervention in the shaft fixing and lifting process, which reduces the labor intensity of operators, avoids the safety hazard of shaft slippage during manual operation, and provides a stable prerequisite for the subsequent sliding device to drive the horizontal transfer of the shaft, significantly improving the overall efficiency of shaft transfer.

[0023] 2. The clamping mechanism 2, through the collaborative design of multiple components, significantly improves the stability and adaptability of the rotating shaft clamping. The pin seat 24 provides a stable pivot point for the arc-shaped clamping block 21, and together with the hinge joint 26, converts the linear driving force of the first driving component 23 into the rotational clamping force of the arc-shaped clamping block 21, allowing the arc-shaped clamping block 21 to smoothly conform to the outer circumference of the rotating shaft. The hinged design between the base of the first driving component 23 and the baffle 22 can adaptively adjust the angle with the rotation of the arc-shaped clamping block 21, avoiding the driving component from jamming under force and ensuring smooth clamping action. The cylinder drive method has a fast response speed and can accurately control the clamping force according to the diameter of the rotating shaft, preventing the rotating shaft from shifting during transfer due to excessively loose clamping, and also preventing damage to the rotating shaft surface due to excessively tight clamping. The mounting base 25 provides a stable connection carrier for the baffle 22 and the lifting mechanism 3, ensuring that the clamping mechanism 2 and the lifting mechanism 3 move synchronously, further ensuring clamping stability. Furthermore, this structure can be adapted to coating machine shafts of different diameters by adjusting the curvature of the arc-shaped clamping block 21 or by replacing the arc-shaped clamping block 21 with different specifications, thus expanding the applicability of the device. 3. The sliding cooperation structure between the slide rail 33 and the fixed frame 31 of the lifting mechanism 3 provides high-precision guiding constraints for the lifting block 32, ensuring that there is no lateral sway when the lifting block 32 drives the mounting base 25 and the clamping mechanism 2 to rise and fall. This ensures that the rotating shaft remains horizontal during the lifting process and avoids interference between the rotating shaft and other components due to unstable lifting. The second drive component 34 is directly connected to the mounting base 25, and the bottom end of the lifting block 32 is synchronously connected to the mounting base 25, forming a double drive support. This enhances the load-bearing capacity of the lifting action and can stably drive the heavy rotating shaft to rise and fall, meeting the transfer requirements of rotating shafts of different specifications of coating machines. At the same time, the reinforcing ribs between the baffle 22 and the mounting base 25 effectively enhance the connection strength between the two, preventing deformation of the baffle 22 due to concentrated force when clamping the rotating shaft, and extending the service life of the clamping mechanism 2. The structural stability of the baffle 22 further ensures the reliability of the rotating shaft clamping, preventing the increase in clamping gap due to the deformation of the baffle 22, ensuring that the rotating shaft remains in a stable and fixed state throughout the transfer process, and improving the accuracy of the rotating shaft transfer.

[0024] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0025] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A clamping device for the rotating shaft of a coating machine, characterized in that, The device includes a bracket (1), a clamping mechanism (2), and a lifting mechanism (3); both sets of the lifting mechanisms (3) are mounted on the bracket (1); the clamping mechanism (2) is disposed on the lifting mechanism (3), and the lifting mechanism (3) defines at least a portion of the lifting path of the clamping mechanism (2); the clamping mechanism (2) includes an arc-shaped clamping block (21), a baffle (22), and a first driving member (23); the arc-shaped clamping block (21) is hinged to the baffle (22); the first driving member (23) is drivenly connected to the arc-shaped clamping block (21); the arc-shaped clamping block (21) and the baffle (22) are used to fix the rotating shaft.

2. The gripping device for a rotating shaft of a curtain coating machine according to claim 1, wherein The clamping mechanism (2) further includes a pin seat (24), a mounting base (25), and a hinge joint (26); the baffle (22) is disposed on the mounting base (25); the pin seat (24) is disposed on the baffle (22); the arc-shaped clamping block (21) is hinged to the pin seat (24) by a pin; the first driving member (23) is a cylinder; the hinge joint (26) is disposed on the piston end of the first driving member (23); the hinge joint (26) is hinged to the arc-shaped clamping block (21) by a pin; the base of the first driving member (23) is fixed to the baffle (22) by a hinge; the mounting base (25) is disposed on the lifting mechanism (3).

3. The roll-up device according to claim 2, wherein The lifting mechanism (3) includes a fixed frame (31), a lifting block (32), a slide rail (33), and a second driving member (34); the fixed frame (31) is mounted on the bracket (1); the slide rail (33) is mounted on the lifting block (32); the fixed frame (31) is sleeved on the lifting block (32), and the inner side of the fixed frame (31) is slidably connected to the slide rail (33); the second driving member (34) is mounted on the outer side of the fixed frame (31); the second driving member (34) is a cylinder; the piston end of the second driving member (34) and the bottom end of the lifting block (32) are both connected to the mounting base (25).

4. The roll-up apparatus according to claim 2, wherein A reinforcing rib is provided between the baffle (22) and the mounting base (25).

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