A conveying device for the production process of aluminum can lids.

Abstract

This invention discloses a conveying device for the production process of can lids, including an overhead support, a first uncoiling station, a second uncoiling station, a conveying drive assembly, and a strip clamping mechanism. The conveying drive assembly includes a power component, a roller, a main sprocket, a driven sprocket, and a conveying chain connecting the main sprocket and the driven sprocket. The transmission path of the conveying chain is a closed loop passing sequentially above the first uncoiling station, the top of the overhead support, and above the second uncoiling station. The strip clamping mechanism includes a base, a first clamping arm, a drive component, and a second clamping arm. The strip clamping mechanism clamps the end of the metal strip at the first uncoiling station and, under the traction of the conveying drive assembly, carries the end of the metal strip along the transmission path to the second uncoiling station for release. This conveying device enables online docking preparation of the ends of new and old coils, avoiding planned downtime of the production line, shortening coil changeover time, and greatly improving equipment utilization and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of aluminum can lid manufacturing technology, and more specifically, to a conveying device for aluminum can lid manufacturing process. Background Technology

[0002] On modern, high-speed production lines for aluminum can lids, raw materials are typically supplied in the form of giant aluminum coils weighing several tons. The production line continuously stamps thousands of coils per minute, placing extremely high demands on the continuous and stable supply of raw materials. However, the length of a single aluminum coil is limited and it needs to be replaced when it is depleted.

[0003] Currently, the common method for changing rolls of material is to stop the machine for replacement. This means that when the roll of material being used is about to run out, the entire production line must stop operating. Subsequently, operators need to unload the old roll, hoist the new roll to the unwinding station, and manually thread the end of the new roll (called the "lead") and guide it into the subsequent cleaning, coating, or stamping equipment. This process involves heavy material handling and precision threading operations, and even skilled workers usually need 15 to 30 minutes to complete. For high-speed production lines, such frequent, planned downtime means huge capacity losses and reduced production efficiency, while also increasing the labor intensity and operational risks for workers. Therefore, it needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a conveying device for the production process of aluminum can lids, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A conveying device for a beverage can lid manufacturing process, comprising:

[0007] The high-altitude support frame is fixedly installed inside the production workshop;

[0008] The first unwinding station is located on one side of the high-altitude support;

[0009] The second uncoiling station is located on the other side of the high-altitude support;

[0010] The conveying drive assembly includes a power component mounted on an aerial support, a rotating roller fixed to the output end of the power component, a main sprocket symmetrically fixed to the outer wall of the rotating roller, a driven sprocket symmetrically rotatably connected to the aerial support, and a conveying chain connected between the main sprocket and the driven sprocket. The transmission path of the conveying chain is a closed loop that passes sequentially above the first uncoiling station, the top of the aerial support, and above the second uncoiling station.

[0011] The strip clamping mechanism corresponds one-to-one with the conveyor chain and includes a base fixed on the conveyor chain, a first clamping arm and a drive unit fixed on the base, and a second clamping arm fixed at the output end of the drive unit.

[0012] The strip clamping mechanism clamps the end of the metal strip at the first uncoiling station and, under the traction of the conveying drive assembly, carries the end of the metal strip along the transmission path to the second uncoiling station for release.

[0013] Preferably, the power component includes a motor fixed on a high-altitude support, the output end of the motor is fixedly connected to a first sprocket, one end of the rotating roller is fixedly connected to a second sprocket, and a transmission chain connects the second sprocket and the first sprocket.

[0014] Preferably, the conveyor chain includes an upward lifting section from the first uncoiling station, a horizontal section that crosses the top of the overhead support, a downward section that descends from the horizontal section to the second uncoiling station, and a return section connecting the lifting section and the downward section.

[0015] Preferably, a plurality of first support rollers are rotatably connected to the lower part of the horizontal section of the high-altitude support, and a steering roller is rotatably connected to both ends of the high-altitude support.

[0016] Preferably, the surface of the base is connected to a vibration damping substrate via a vibration damping connector, and the first clamping arm and the driving component are both fixed to the surface of the vibration damping substrate.

[0017] Preferably, a second support roller is rotatably connected between the vibration damping substrates of adjacent strip clamping mechanisms.

[0018] Preferably, the vibration damping substrate is provided with a guide assembly, which includes a first guide roller and a second guide roller, and a guide channel for the end of the metal strip is formed between the first guide roller and the second guide roller.

[0019] Preferably, a rotating shaft is rotatably connected to the vibration damping substrate, the second guide roller is coaxially fixed on the rotating shaft, a screw is rotatably connected to the vibration damping substrate, a knob is fixedly connected to the upper end of the screw, a slider is threadedly connected to the outer wall of the screw, a groove is formed on the vibration damping substrate, the slider is slidably connected in the groove, and the first guide roller is connected to the side wall of the slider.

[0020] Preferably, the sidewall of the slider is connected to a limiting wheel via a pre-tensioning spring, the first guide roller is rotatably connected to the free end of the limiting wheel, and a telescopic rod is fixedly connected between the limiting wheel and the slider.

[0021] Preferably, clamping blocks are fixedly connected to the working surfaces of the first and second clamping arms by bolts, and an elastic material layer is provided on the working surface of the clamping blocks.

[0022] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:

[0023] 1. By setting up high-altitude supports and forming a closed-loop conveyor chain, an independent, elevated material transfer channel is constructed. Before the old rolls at the second uncoiling station are exhausted, the strip clamping mechanism located on the conveyor chain can automatically clamp the end of the new roll at the first uncoiling station and transport it at high speed and automatically to the second uncoiling station along a specific path. This allows the preparation work for threading the new roll to be completed online in advance before the old rolls are exhausted, realizing the online docking preparation of the ends of the new and old rolls. This avoids planned downtime of the production line, shortens the roll changeover time, greatly improves equipment utilization and production efficiency, and at the same time reduces the intensity of manual operation and safety hazards.

[0024] 2. The vibration damping connector effectively isolates the high-frequency vibration generated by the chain drive, preventing the generation of vibration marks on the strip surface from the source. The guide component and its adjustable width design, combined with the floating lateral constraint formed by the pre-tension spring and the limit wheel, achieve precise alignment and dynamic anti-deviation of the strip, avoiding edge scratches. The elastic material layer provides flexible clamping, ensuring gripping force while eliminating pinching and indentation. These structures work together to ensure that the strip end remains flat, clean and undamaged after long-distance, multi-turn conveying, providing a perfect interface for subsequent processing, thus fundamentally guaranteeing the ultra-high yield and consistency of the final can lid product.

[0025] 3. The specific combination of preload spring and telescopic rod creatively achieves a balance between dynamic damping and rigid limiting. Under normal operating conditions, the preload spring provides flexible damping, absorbing minor disturbances and allowing the strip to self-align. In the event of abnormally strong impact or severe deviation, the telescopic rod provides rigid limiting, preventing damage to the mechanism and irreversible excessive plastic deformation or jamming of the strip. This built-in protection mechanism, which requires no external sensors, greatly enhances the robustness of the system. At the same time, the precision adjustment mechanism composed of screw and knob allows the guide channel to quickly adapt to aluminum coils of different widths, improving the process flexibility of the production line. These designs together constitute a highly reliable, highly self-adaptive, and easy-to-maintain purely mechanical system, reducing the difficulty of operation, maintenance costs, and the risk of unexpected downtime. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0027] Figure 1 This is a schematic diagram of a conveying device structure for a can lid manufacturing process in one embodiment;

[0028] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the diagram;

[0029] Figure 3 This is a schematic diagram of the conveyor drive assembly structure in one embodiment;

[0030] Figure 4 This is a schematic diagram of the power component structure in one embodiment;

[0031] Figure 5 This is a schematic diagram of a conveyor chain structure in one embodiment;

[0032] Figure 6 This is a schematic diagram of a conveying device part of a can lid manufacturing process in one embodiment;

[0033] Figure 7 This is a schematic diagram of the strip clamping mechanism in one embodiment;

[0034] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point B in the diagram;

[0035] Figure 9 This is a schematic diagram of the guide component structure in one embodiment;

[0036] Figure 10 This is a schematic diagram of the second clamping arm structure in one embodiment.

[0037] Figure label:

[0038] 100. High-altitude support frame; 200. First uncoiling station; 300. Second uncoiling station; 400. Conveyor drive assembly; 410. Power component; 411. Motor; 412. First sprocket; 413. Second sprocket; 414. Drive chain; 420. Rotary roller; 430. Main sprocket; 440. Driven sprocket; 450. Conveyor chain; 451. Lifting section; 452. Horizontal section; 453. Descending section; 454. Return section; 460. First support roller; 470. Steering roller; 500. Strip clamping mechanism; 501. Preload spring; 502. Limiting wheel; 503. Telescopic rod; 504. Clamping block; 505. Elastic material layer; 510. Base; 520. First clamping arm; 530. Driving component; 540. Second clamping arm; 550. Vibration damping connector; 560. Vibration damping base plate; 570. Second support roller; 580. Guide assembly; 581. First guide roller; 582. Second guide roller; 583. Guide channel; 584. Rotating shaft; 585. Screw; 586. Knob; 587. Slider; 588. Slide groove. Detailed Implementation

[0039] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0040] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0041] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0042] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0043] like Figures 1-10 As shown, a conveying device for the production process of can lids includes an aerial support 100, a first uncoiling station 200, a second uncoiling station 300, a conveying drive assembly 400, and a strip clamping mechanism 500.

[0044] Please refer to Figure 1 The aerial support 100 is fixedly installed on the ground of the production workshop. The first uncoiling station 200 is located on one side of the aerial support 100, and the second uncoiling station 300 is located on the other side of the aerial support 100. Both the first uncoiling station 200 and the second uncoiling station 300 are equipped with an uncoiling machine. The uncoiling machine has an integrated drive system. The metal coil is placed on the mandrel of the uncoiling machine. The uncoiling machine is fixed on the mounting base. A groove is opened on the ground of the production workshop, and a guide rail is installed in the groove. The mounting base can move on the guide rail, which facilitates the replacement of the coil on the mandrel of the uncoiling machine.

[0045] Please refer to Figure 3 The conveying drive assembly 400 includes a power component 410 mounted on the high-altitude support 100, a rotating roller 420 fixed at the output end of the power component 410, a main sprocket 430 symmetrically fixed on the outer wall of the rotating roller 420, a driven sprocket 440 symmetrically rotatably connected to the high-altitude support 100, and a conveying chain 450 connected between the main sprocket 430 and the driven sprocket 440. The transmission path of the conveying chain 450 is a closed loop that passes sequentially above the first uncoiling station 200, the top of the high-altitude support 100, and above the second uncoiling station 300.

[0046] Please refer to Figure 2The strip clamping mechanism 500 corresponds one-to-one with the conveyor chain 450, and the strip clamping mechanism 500 includes a base 510 fixed on the conveyor chain 450, a first clamping arm 520 fixed on the base 510 and a drive member 530, and a second clamping arm 540 fixed on the output end of the drive member 530.

[0047] The strip clamping mechanism 500 clamps the end of the metal strip at the first uncoiling station 200 and, under the traction of the conveying drive assembly 400, carries the end of the metal strip along the transmission path to the second uncoiling station 300 for release.

[0048] By setting up an aerial support 100 and a conveyor chain 450 forming a closed loop, an independent, elevated material transfer channel is constructed. Before the old rolls on the second uncoiling station 300 are exhausted, the strip clamping mechanism 500 located on the conveyor chain 450 can automatically clamp the end of the new roll at the first uncoiling station 200 and transport it at high speed and automatically to the second uncoiling station 300 along a specific path. This allows the preparation work for threading the new roll to be completed online in advance before the old rolls are exhausted, realizing the online docking preparation of the ends of the new and old rolls. This avoids planned downtime of the production line, shortens the roll changeover time, greatly improves equipment utilization and production efficiency, and at the same time reduces the intensity of manual operation and safety hazards.

[0049] Please refer to Figure 4 The power component 410 includes a motor 411 fixed on the high-altitude support 100. The output end of the motor 411 is fixedly connected to a first sprocket 412. One end of the rotating roller 420 is fixedly connected to a second sprocket 413. A transmission chain 414 connects the second sprocket 413 and the first sprocket 412. The motor 411 is a forward and reverse rotating motor.

[0050] Since the drive roller 420 needs to drive two long-distance, heavy-duty (strip clamping mechanism 500 and strip) conveyor chains 450, the required starting torque and running torque are very large. Therefore, by setting the first sprocket 412 and the second sprocket 413, a speed reduction and torque amplification mechanism can be formed. Typically, the small sprocket (first sprocket 412) on the shaft of the motor 411 drives the large sprocket (second sprocket 413). While reducing the speed of the roller 420, the output torque is amplified by the transmission ratio. This allows the use of a relatively small, more economical, and more common high-speed motor 411 to meet the heavy-load, low-speed drive requirements. The transmission method of the motor 411 driving the roller 420 through the first sprocket 412, the second sprocket 413, and the transmission chain 414 provides a drive solution with smooth, reliable, and easy-to-maintain power transmission, ensuring the stable operation of the conveyor chain 450 under long-distance, heavy-load traction.

[0051] Please refer to Figure 5The conveyor chain 450 includes an upward lifting section 451 from the first uncoiling station 200, a horizontal section 452 that crosses the top of the overhead support 100, a downward section 453 that descends from the horizontal section 452 to the second uncoiling station 300, and a return section 454 connecting the lifting section 451 and the downward section 453.

[0052] The lifting section 451 and the descending section 453 enable the vertical transfer of materials between different height workstations. The horizontal section 452 enables the horizontal long-distance transport of materials at high altitudes. The return section 454 makes the conveyor chain 450 form a closed loop. This path design makes efficient use of the upper space of the workshop, avoids interference with ground equipment and personnel flow, and has a reasonable layout.

[0053] Please refer to Figure 6 Multiple first support rollers 460 are rotatably connected to the upper support 100 below the horizontal section 452. Both ends of the upper support 100 are rotatably connected to steering rollers 470. The first support rollers 460 provide continuous support for the conveyed metal strip below the horizontal section 452, preventing the strip from swaying or being scratched due to excessive sag caused by its own weight. The steering rollers 470 ensure that the conveyor chain 450 and the strip turn smoothly and with low resistance at the end of the path, ensuring the smoothness and stability of the conveying process.

[0054] Please refer to Figure 7 The surface of the base 510 is connected to the vibration damping substrate 560 via the vibration damping connector 550, and the first clamping arm 520 and the driving member 530 are both fixed to the surface of the vibration damping substrate 560.

[0055] It should be noted that the vibration damping connector 550 is a rubber vibration damping pad, a polyurethane vibration damping block, or a metal spring vibration damper.

[0056] The clamping actuator (first clamping arm 520, drive component 530) is flexibly connected to the base 510 that moves with the conveyor chain 450 by the vibration damping connector 550, forming a vibration isolation system. This structure can effectively isolate and absorb the high-frequency vibration generated during the transmission of the conveyor chain 450, preventing the vibration from being directly transmitted to the clamped metal strip, thereby significantly reducing the high-frequency vibration of the strip during conveying, creating conditions for maintaining the flatness of the strip end and subsequent precision docking.

[0057] Please refer to Figure 7A second support roller 570 is rotatably connected between the damping base plates 560 of adjacent strip clamping mechanisms 500. The second support roller 570 connected between the damping base plates 560 of adjacent strip clamping mechanisms 500 forms an additional, flexible auxiliary support point between the two strip clamping mechanisms 500. It can provide effective support for the metal strip during long-distance conveying, especially in the section between the two strip clamping mechanisms 500, to prevent the strip from being too long and deformed in a wavy shape or sagging, and further ensure the flatness of the strip.

[0058] Please refer to Figure 8 A guide assembly 580 is provided on the vibration damping substrate 560. The guide assembly 580 includes a first guide roller 581 and a second guide roller 582. A guide channel 583 for the metal strip end to be introduced is formed between the first guide roller 581 and the second guide roller 582.

[0059] The guide assembly 580 and the guide channel 583 formed therein are located in front of the clamping station. Its main function is to mechanically guide and coarsely position the end of the metal strip that is about to enter the clamping port. This can automatically correct the end of the strip to the position aligned with the clamping port (between the first clamping arm 520 and the second clamping arm 540), which greatly simplifies the strip threading operation, improves the automation success rate, and avoids clamping failure or strip edge damage caused by misalignment.

[0060] Please refer to Figure 8 and Figure 9 A rotating shaft 584 is rotatably connected to the vibration damping base plate 560. A second guide roller 582 is coaxially fixed on the rotating shaft 584. A screw 585 is rotatably connected to the vibration damping base plate 560. A knob 586 is fixedly connected to the upper end of the screw 585. A slider 587 is threadedly connected to the outer wall of the screw 585. A groove 588 is provided on the vibration damping base plate 560. The slider 587 is slidably connected in the groove 588. A first guide roller 581 is connected to the side wall of the slider 587.

[0061] By rotating the knob 586 to drive the screw 585, the slider 587 moves precisely along the groove 588, thereby adjusting the position of the first guide roller 581. This allows the same device to quickly and easily adapt to metal strips of different thicknesses, enhancing the versatility and process flexibility of the equipment.

[0062] The side wall of the slider 587 is connected to the limiting wheel 502 via a pre-tension spring 501. The first guide roller 581 is rotatably connected to the free end of the limiting wheel 502. A telescopic rod 503 is fixedly connected between the limiting wheel 502 and the slider 587.

[0063] The specific combination of the preload spring 501 and the telescopic rod 503 not only provides pressure but also achieves a balance between dynamic damping and rigid restraint. This produces an unexpected effect in preventing the thin aluminum strip from jamming or excessively deforming, as follows:

[0064] I. Core Structure and Functional Definition

[0065] Preload spring 501: Connected between slider 587 and limit wheel 502, its core function is to provide a constant elastic preload force pointing towards the side of the strip, so that limit wheel 502 can always press against the edge of the strip.

[0066] Telescopic rod 503: It is also connected between slider 587 and limit wheel 502, and is installed in parallel with preload spring 501. Its core function is to act as a rigid, fixed-length mechanical link to strictly limit the maximum travel of limit wheel 502 relative to slider 587.

[0067] II. Dynamic Damping Mode under Normal Conditions (Small Disturbance Absorption and Automatic Centering)

[0068] 1. Working condition: When the belt experiences slight, high-frequency lateral vibration or slow, slight deviation during conveying, the lateral pressure generated by its side edge on the limit wheel 502 is less than the preload force of the preload spring 501.

[0069] 2. Mechanical Behavior: At this time, the telescopic rod 503 is in the free segment of its stroke and is not the main force-bearing component. The displacement of the limit wheel 502 is entirely controlled by the compression and rebound of the preload spring 501. The preload spring 501 acts as a damping element, and its function is as follows:

[0070] Energy dissipation: The kinetic energy of the strip vibration impact is converted into the internal energy of the preload spring 501 (heat dissipation), thereby damping the vibration and preventing it from being transmitted to the entire frame.

[0071] Elastic reset: When the strip deviates slightly to one side, the compressed spring will generate a restoring force, which will push the limit wheel 502 to push the strip back to the center position, realizing dynamic and flexible automatic centering.

[0072] 3. Effect: In this mode, the system acts like a soft-contact intelligent buffer, allowing the strip to have slight, harmless elastic floating near the centerline, avoiding rigid impacts, effectively protecting the strip edges, and eliminating high-frequency jitter.

[0073] III. Rigid Limiting Modes under Extreme or Abnormal Conditions (Catastrophic Failure Prevention)

[0074] 1. Working status: When serious deviation occurs (such as incorrect belt threading or equipment linkage failure) or a sudden strong impact, the lateral force of the belt on the limit wheel 502 increases sharply, which is enough to completely compress the preload spring 501 until the displacement of the limit wheel 502 reaches its limit, that is, the end of the travel of the telescopic rod 503.

[0075] 2. Mechanical behavior: At this point, since the telescopic rod 503 is a rigid rod, it cannot be compressed any further, and it immediately provides an absolutely rigid mechanical stop for the entire system.

[0076] Hard travel limit: It strictly limits the maximum distance that the limit wheel 502 can retreat, thus setting an insurmountable safety boundary for the lateral movement of the strip.

[0077] Force transfer: The huge abnormal force will be directly transmitted to the robust slider 587 and base 510 through the telescopic rod 503, avoiding the fragile preload spring 501 from being over-compressed and failing (such as plastic deformation or breakage).

[0078] 3. Effect: In this mode, the system instantly switches to a hard stop, forcibly preventing the strip from undergoing further dangerous and irreversible plastic deformation (such as severe edge curling or tearing), thus preventing the accident from escalating.

[0079] IV. The unexpected effects manifested in preventing problems with thin aluminum strips

[0080] For aluminum strips used in can lids that are extremely thin (typically 0.2-0.3mm), flexible, and require very high surface finish, this combination produces a level of protection that a single component cannot achieve:

[0081] 1. Eliminate the risk of stagnation

[0082] The drawbacks of traditional rigid guide channels are that the gap is fixed and it is very sensitive to the width tolerance and serpentine movement of the strip. If there is any deviation, it is very easy to cause the edge of the aluminum strip to rub and squeeze against the guide channel, resulting in debris or deformation, and then jamming.

[0083] The solution in this design is the elastic floating in dynamic damping mode, which allows the limit wheel 502 to adapt to the slight deviations and fluctuations of the strip, always maintaining contact but not rigid resistance. This eliminates the jamming caused by rigid interference at the source. Even if an abnormality occurs, there is rigid limiting to prevent excessive compression deformation and jamming.

[0084] 2. Prevent excessive deformation and surface damage.

[0085] The disadvantages of simply using the pre-tension spring 501 for compression: If there is no telescopic rod 503, the pre-tension spring 501 will be over-compressed when encountering abnormally strong forces, causing the limit wheel 502 to move back significantly. The strip will then undergo permanent plastic deformation such as significant bending and wrinkling due to the loss of lateral restraint.

[0086] The solution of this design is that the telescopic rod 503 sets the limit of the compression of the pretension spring 501, which is to say, sets the maximum safety margin for the strip to deviate. Once the deformation trend of the strip approaches the dangerous threshold, the system immediately switches to rigid limit and forcibly locks the strip before it undergoes irreversible excessive deformation. At the same time, the flexible contact of the pretension spring 501 itself also avoids hard scratching.

[0087] For the protection of ultra-thin soft conveyor belts, the synergy of elastic floating and rigid bottoming enables the guiding mechanism to achieve the highest level of material protection without sacrificing reliability. It gives the mechanical structure the ability to judge and respond to working conditions, gently guiding under normal conditions and resolutely stopping under abnormal conditions.

[0088] Please refer to Figure 10 Clamping blocks 504 are fixedly connected to the working surfaces of the first clamping arm 520 and the second clamping arm 540 by bolts, and an elastic material layer 505 is provided on the working surface of the clamping block 504.

[0089] The replaceable clamping block 504 is designed to facilitate maintenance and replacement of worn parts. The elastic material layer 505 (such as polyurethane or rubber) on its working surface can effectively protect the surface of the metal strip from being pinched or indented while providing sufficient clamping force. This is crucial for products such as can lids that have extremely high requirements for the surface quality of raw materials, ensuring the surface quality of the final product.

[0090] To meet the extremely high quality requirements of aluminum surfaces for can lids, this solution innovatively integrates vibration reduction, adjustable guidance, and floating clamping onto a high-speed chain conveyor. This combination effectively solves the industry problem of strip ends easily shaking, scratching, and deviating during long-distance, multi-directional conveying, thereby ensuring the accuracy and yield of subsequent processing. The specific synergistic effects are as follows:

[0091] I. Foundation laying of vibration reduction structure: Vibration reduction connector 550 and vibration reduction base plate 560

[0092] The high-speed conveyor chain 450 and its power component 410 inevitably generate vibrations and impacts. The vibration damping connector 550, as the first line of defense, actively isolates and absorbs these broadband vibrations from the drive source, preventing them from being directly transmitted to the guide and clamping components on the strip clamping mechanism 500. This provides a low-vibration working platform for the subsequent adjustable guide assembly 580 and the strip clamping mechanism 500. Without this structure, high-frequency vibrations would directly cause the guide and clamping structures on the strip clamping mechanism 500 to shake and vibrate, resulting in regular vibration patterns on the strip that are difficult to eliminate from the beginning of the conveying process, which would fail to meet the extremely high surface quality requirements in the production of can lids.

[0093] II. Adaptive Dynamic Centering and Anti-Sway

[0094] 1. Structure and Function

[0095] Limiting wheel 502: Usually used in pairs, located on both sides of the strip, with its wheel surface in contact with the side (thickness surface) of the strip.

[0096] Preload spring 501: Connected between slider 587 and limit wheel 502, providing limit wheel 502 with a continuous compressible elastic force pointing towards the side of the strip.

[0097] 2. Working Mechanism

[0098] Adaptive width: When strips of different widths or with width tolerances enter, the limiting wheels 502 on both sides can compress the pre-tension springs 501 behind them under the pressure of the strip, thereby producing a slight outward yield. This allows the same device to adapt to strip widths within a certain range without the need for precise adjustment.

[0099] Elastic constant compression: After the preload spring 501 is compressed, its rebound force will continue to act evenly on the limit wheels 502 on both sides, so that it always gently but firmly holds the two sides of the strip edge.

[0100] Dynamic correction and anti-sway: During the conveying process, if the strip attempts to shift to the left or right due to uneven force or path deviation, the limiting wheel 502 on the offset side will further compress the spring, thereby generating an increased reverse restoring force to push the strip back to the center position. The limiting wheel 502 on the other side plays a guiding and supporting role. This mechanism realizes dynamic and real-time automatic centering, effectively suppressing the lateral shaking and serpentine deviation of the strip.

[0101] Synergistic protection effect: This elastic floating limit replaces the traditional rigid slot guide. It allows the strip to have a small, harmless elastic float near the centerline, but strictly limits its large offset, thereby avoiding edge chipping or curling caused by rigid friction.

[0102] III. Distributed Pressure and Buffer Protection

[0103] 1. Structure and Function

[0104] Clamping block 504: This is a rigid component that directly performs the clamping action. It is usually made of metal and provides the basis for the main clamping force.

[0105] Elastic material layer 505: It is firmly attached to the working surface of the clamping block 504. The material is usually polyurethane, engineering rubber or special composite material, which has a high coefficient of friction, wear resistance and a certain compression deformation capacity.

[0106] 2. Working Mechanism

[0107] Pressure distribution: When the first clamping arm 520 and the second clamping arm 540 are closed under the action of the drive member 530, the clamping force is transmitted through the rigid clamping block 504, but is ultimately applied to the strip surface by the soft elastic material layer 505. The elastic material layer 505 will undergo micro-deformation under pressure, adapting to the slight unevenness (such as roller marks, slight waves) that may exist on the strip surface, and evenly distributing the concentrated clamping force to a larger contact area.

[0108] Buffering and vibration absorption: The elastic material layer 505 acts as a highly efficient damper, which can absorb the high-frequency micro-amplitude vibration generated by the strip clamping mechanism 500 during the high-speed operation of the conveyor chain 450, as well as the impact at the moment of clamping, and prevent these vibrations and impacts from being transmitted to the strip in a hard-on manner, causing surface ripples or fretting wear.

[0109] High-friction soft contact: While providing sufficient clamping force, the elastic material layer 505 has a high-friction soft contact with the strip surface, which greatly reduces the risk of scratching the bright aluminum surface. Even if tiny particles are pressed into the contact surface, they will be wrapped by the elastic material instead of directly scratching the metal.

[0110] Synergistic protection effect: It solves the inherent contradiction of clamping, which is to clamp tightly to prevent slippage, while avoiding damage. The elastic material layer 505 transforms the tight rigid force into stable uniform pressure and provides vibration isolation.

[0111] In terms of width, the limiting wheel 502 and the preload spring 501 allow the strip to adapt to the width, but once it tries to deviate, it will be gently but firmly pulled back to the right track by the elastic force, eliminating the root cause of lateral shaking and deviation; in terms of thickness, the elastic material layer 505 dissolves the fatal concentrated stress and high-frequency vibration into harmless uniform pressure and damping heat, eliminating the conditions for the generation of surface scratches and vibration marks, so that the strip ends are flat, without vibration marks, scratches, or deviation and are delivered to the second uncoiling station 300.

[0112] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A conveying device for a production process of a zip-top can lid, characterized in that, The utility model relates to a kind of metal strip production line, including: High support (100) is fixedly installed in production workshop; First uncoiling station (200) is located at one side of the high support (100); Second uncoiling station (300) is located at the other side of the high support (100); Conveying drive assembly (400) includes power component (410) installed on high support (100), rotating roller (420) fixed at the output end of power component (410), main sprocket (430) fixed symmetrically on the outer wall of rotating roller (420), slave sprocket (440) rotationally connected symmetrically on high support (100), and conveying chain (450) connected between main sprocket (430) and slave sprocket (440), the transmission path of the conveying chain (450) is a closed loop that passes through above first uncoiling station (200), top of high support (100) and above second uncoiling station (300) in turn; Strip clamping mechanism (500) corresponds to conveying chain (450) one by one, and includes base (510) fixed on conveying chain (450), first clamping arm (520) and driving element (530) fixed on base (510), and second clamping arm (540) fixed at the output end of driving element (530); Wherein, the strip clamping mechanism (500) clamps the end of metal strip at first uncoiling station (200), under the traction of conveying drive assembly (400), carries the end of metal strip to move to second uncoiling station (300) and releases along transmission path; The surface of the base (510) is connected with a damping base plate (560) through a damping connecting piece (550), and the first clamping arm (520) and the driving element (530) are both fixed on the surface of the damping base plate (560); Second support roller (570) is rotationally connected between the damping base plates (560) of adjacent strip clamping mechanisms (500); The damping base plate (560) is provided with a guide assembly (580), and the guide assembly (580) includes a first guide roller (581) and a second guide roller (582), and a guide channel (583) for guiding the end of the metal strip to enter is formed between the first guide roller (581) and the second guide roller (582); The damping base plate (560) is rotationally connected with a rotating shaft (584), the second guide roller (582) is coaxially fixed on the rotating shaft (584), the damping base plate (560) is rotationally connected with a screw rod (585), the upper end of the screw rod (585) is fixedly connected with a knob (586), the outer wall of the screw rod (585) is threadedly connected with a sliding block (587), the damping base plate (560) is provided with a sliding groove (588), the sliding block (587) is slidingly connected in the sliding groove (588), and the first guide roller (581) is connected to the side wall of the sliding block (587). The side wall of the sliding block (587) is connected with a limiting wheel (502) through a pre-tightening spring (501), the first guide roller (581) is rotationally connected at the free end of the limiting wheel (502), and the limiting wheel (502) and the sliding block (587) are fixedly connected with an extension rod (503); The working surface of the first clamping arm (520) and the second clamping arm (540) is fixedly connected with a clamping block (504) through bolts, and the working surface of the clamping block (504) is provided with an elastic material layer (505).

2. A conveyor for a production process of a zip-top can end as defined in claim 1, characterized in that The power member (410) comprises a motor (411) fixed on the high-altitude support (100), the output end of the motor (411) is fixedly connected with a first chain wheel (412), one end of the rotating roller (420) is fixedly connected with a second chain wheel (413), and the second chain wheel (413) and the first chain wheel (412) are connected with a transmission chain (414).

3. A conveyor for a production process of a zip-top can end as defined in claim 1, characterized in that The conveying chain (450) comprises a lifting section (451) upward from the first unwinding station (200), a horizontal section (452) across the top of the high-altitude support (100), a descending section (453) descending from the horizontal section (452) to the second unwinding station (300), and a return section (454) connected between the lifting section (451) and the descending section (453).

4. A conveying device for a production process of a zip-top can lid according to claim 3, characterized in that A plurality of first supporting rollers (460) are rotationally connected below the horizontal section (452) on the high-altitude support (100), and the two ends of the high-altitude support (100) are rotationally connected with steering rollers (470).

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