Damping device on easy-to-pull cover pipe cage line

Abstract

The utility model relates to the technical field of packaging, in particular to a damping device on an easy-to-pull cover tube cage line, which comprises an annular sealing air bag sleeved outside an easy-to-pull cover tube cage conveying line. When the annular sealing air bag is in an inflated state, the inner wall of the annular sealing air bag can partially expand inwards through a gap between two adjacent wire harnesses of the easy-to-pull cover pipe cage conveying line, and buffering and limiting effects are achieved on easy-to-pull covers in the pipe cage conveying line. By means of the annular sealing air bag type buffering and limiting design, the problems that an existing damping device is tedious in adjustment, uneven in buffering, high in maintenance cost and the like are fundamentally solved, and the conveying stability and the packaging efficiency of the easy-to-pull lids are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, specifically a damping device on an easy-open lid tube cage line. Background Technology

[0002] In the manufacturing process of easy-open lids, conveyor cages play an indispensable role as a key conveying device and are widely used in multiple production processes. From the initial transportation of raw materials to the flow of semi-finished products between different processing stations, and finally to the conveying of the final product, conveyor cages are present throughout the entire production process. They not only enable efficient material transfer but also, through specific structural designs, guide materials along predetermined paths according to production needs, ensuring the continuity and stability of production.

[0003] In the packaging process of easy-open lids, the basic lids, after being filled with glue, are transported to the transfer packing station via a conveyor cage. However, existing conveyor cages have significant drawbacks in this stage. Their structure is typically vertically downwards, with the bottom horizontally guiding the lid into the packing station's lid slot. With this design, as the easy-open lids slide outwards guided by the cage, there is a lack of effective obstruction at the exit. Because the easy-open lids themselves have a certain weight, as the number of lids at the exit increases, the lids in a vertical position will be pushed towards the packing station's lid slot by the subsequent lids. During this process, problems such as lid tipping over and scattering are highly likely.

[0004] The utility model patent CN209410451U discloses a damping device for a canister lid conveyor line, which has achieved certain results in improving canister lid conveying. This device applies damping force to the canister lids by setting damping strips inside the cylinder, allowing the canister lids to enter the packing table cover slot in a relatively orderly manner, thus solving problems such as lid tipping and scattering caused by a lack of effective restraint during conveying. However, this damping device still reveals some obvious shortcomings in practical applications. First, adjusting the damping strips is cumbersome. In actual production, adjusting the force applied by the damping strips to the canister lids requires workers to use tools to tighten screws. This operation is not only time-consuming and reduces production efficiency, but also requires a high level of skill from the operators, increasing labor costs and operational difficulty. Second, due to factors such as manufacturing process, installation errors, and differences in wear during use, tension differences inevitably occur among the three damping strips in the device. This tension difference causes uneven resistance when the easy-open cap passes through the damping device, resulting in inaccurate cap placement, which affects the accuracy and consistency of product packaging and reduces production quality. Utility Model Content

[0005] The purpose of this utility model is to overcome the problems of easy-open lids falling over and scattering during the conveying process, as well as the inconvenience of maintaining the damping device in the existing technology. It provides a damping device for easy-open lid conveying lines that is simple in structure, easy to adjust, and has low maintenance costs. The technical solution adopted is as follows:

[0006] A damping device for an easy-open lid tube cage conveyor line includes an annular sealing airbag fitted outside the easy-open lid tube cage conveyor line; when the annular sealing airbag is inflated, its inner wall can partially expand inward through the gap between two adjacent wire bundles of the easy-open lid tube cage conveyor line, thereby buffering and limiting the easy-open lid inside the tube cage conveyor line.

[0007] Furthermore, an inflation nozzle is provided on the outer wall of the annular sealing airbag.

[0008] Furthermore, a sealing rubber gasket is provided between the inflation nozzle and the outer wall of the annular sealing airbag.

[0009] Furthermore, the annular sealing airbag includes an inner rubber layer and an outer release agent layer.

[0010] Furthermore, the outer layer of the release agent is a polytetrafluoroethylene layer or a silicone layer coated or hot-pressed onto the outer surface of the rubber inner layer.

[0011] Furthermore, the thickness of the outer layer of the release agent is 0.1-0.5 mm, and the surface roughness Ra ≤ 0.2 μm.

[0012] Furthermore, a reinforcing fiber web layer is provided between the inner rubber layer and the outer release agent layer, the reinforcing fiber web layer being woven from polyester fibers.

[0013] Furthermore, the inflation nozzle is a needle valve type, a British type, or an American type.

[0014] Furthermore, when installing the annular sealing airbag, double-sided tape is applied to the wiring harness of the easy-open cover tube cage conveyor line at the corresponding position.

[0015] Furthermore, a pressure gauge is provided on the outer wall of the annular sealing airbag.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. Uniform and stable buffer limit

[0018] When inflated, the annular sealing airbag expands locally through the gaps in the tubular wire harness, forming a uniform circumferential buffer force. This avoids the problem of uneven resistance caused by tension differences in existing damping strips, and can precisely restrict the movement of easy-open caps, effectively reducing phenomena such as inverted caps, scattering, and inaccurate cap placement, thus improving packaging accuracy and consistency.

[0019] 2. Convenient and efficient adjustment

[0020] The cushioning force can be adjusted by inflating or deflating the annular sealing airbag through the inflation nozzle, without the need for tools or complex operations such as turning screws to adjust the damping strip in existing technologies. This significantly reduces the difficulty and time cost of manual operation, adapts to rapid parameter adjustments in different production scenarios, and improves production efficiency.

[0021] 3. Simple structure and low maintenance cost

[0022] The annular sealing airbag structure is simpler than the combination of multiple damping strips, reducing the number of parts and installation errors. The rubber annular sealing airbag is wear-resistant and durable, and does not require frequent replacement, only regular inflation maintenance. This avoids the trouble of adjusting or replacing each damping strip after wear in the existing technology, greatly reducing maintenance costs and downtime.

[0023] 4. Highly adaptable and functionally expandable

[0024] The annular sealing airbag can be tightly fitted to the outside of the tube cage, and is highly compatible with existing conveying equipment. By adjusting the inflation volume, it can flexibly adapt to the conveying needs of different specifications of easy-open lids. Furthermore, it can be further composited with release layers, reinforcing fiber mesh layers, and other structures to achieve functional optimization in terms of reducing friction and improving strength, thus meeting diverse production needs.

[0025] In summary, this utility model, through its annular sealed airbag-type buffer limit design, fundamentally solves the problems of cumbersome adjustment, uneven buffering, and high maintenance costs of existing damping devices, significantly improving the stability and packaging efficiency of easy-open lid conveying. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an existing damping device.

[0027] Figure 2 yes Figure 1 A sectional view. Detailed Implementation

[0028] Referring to the accompanying drawings, a damping device for an easy-open lid tube cage conveyor line includes an annular sealing airbag 1 fitted around the outside of the easy-open lid tube cage conveyor line 100. When inflated, the annular sealing airbag 1's inner wall can partially expand inward through the gap between adjacent wire bundles of the easy-open lid tube cage conveyor line 100, providing a buffering and limiting effect on the easy-open lids inside the tube cage conveyor line. The annular sealing airbag is similar in shape to a tire, both being closed annular cavity structures made of elastic materials such as rubber, capable of inflation and expansion, achieving a buffering function through deformation. Both have annular designs that can be positioned around a central axis—like a tire around an axle. In this embodiment, the annular sealing airbag 1 evenly distributes pressure around the tube cage conveyor line, ensuring balanced circumferential force.

[0029] I. Work Process

[0030] 1. Installation and Initial State

[0031] The annular sealing airbag 1 is tightly fitted to the outside of the easy-open lid tube cage conveyor line 100 in a sleeve manner, with its inner wall aligned with the gap between the conveyor line's wire harness (such as metal wire or plastic strip). At this time, the annular sealing airbag is in an uninflated state, and its inner wall maintains a certain distance from the conveyor line harness, so as not to affect the free sliding of the easy-open lid.

[0032] 2. Inflation and expansion

[0033] Compressed air is injected into the annular sealing airbag through the inflation nozzle 2 (described below), and the internal pressure of the annular sealing airbag gradually increases. When the pressure reaches a set threshold, the inner wall of the annular sealing airbag begins to expand inward through the gap between adjacent wire harnesses of the conveyor line. For example, if the wire harness gap is 3-5 mm, the inner wall of the annular sealing airbag can expand to 2-4 mm after inflation, forming "finger-like" protrusions that extend into the tube cage.

[0034] 3. Buffering and limiting function

[0035] As the easy-open lid slides down the conveyor line, the inflated portion of the annular sealing airbag contacts the edge of the lid. The elastic deformation of the annular sealing airbag absorbs the impact force, preventing the easy-open lid from directly impacting the outlet of the cage or adjacent lids due to inertia. At the same time, the inflated area of ​​the annular sealing airbag is evenly distributed around the circumference of the conveyor line, forming a circumferential constraint on the easy-open lid and preventing it from tipping over or rotating.

[0036] 4. Dynamic equilibrium maintenance

[0037] The air pressure inside the annular sealing airbag is kept stable through the inflation nozzle and sealing gasket (described later). Even during prolonged use, if the pressure in the annular sealing airbag decreases due to material creep or minor leaks, a constant damping force can still be maintained by replenishing air. In addition, the release agent outer layer (such as a polytetrafluoroethylene layer) reduces the frictional resistance between the annular sealing airbag and the conveyor harness, preventing excessive friction from affecting the expansion efficiency of the annular sealing airbag.

[0038] II. Damping Value Adjustment Method

[0039] 1. Inflation volume adjustment

[0040] - Tools: Use a digital tire pressure gauge or mechanical pressure gauge (e.g., 0-100kPa range) connected to the inflation nozzle 2 to monitor the pressure inside the annular sealing airbag in real time.

[0041] -Operation steps:

[0042] 1. Increase damping: Inflate the annular sealing airbag with an air pump or manual air pump. For every 5-10 kPa increase in pressure, the expansion of the annular sealing airbag increases by about 0.5-1 mm, which correspondingly enhances the buffering force on the easy-open cover.

[0043] 2. Reduce damping: Open the deflation valve of the inflation nozzle and slowly release the gas inside the annular sealing airbag. For every 5-10 kPa decrease in pressure, the expansion of the annular sealing airbag decreases by about 0.5-1 mm, and the buffering force is weakened.

[0044] - Reference value: For a conveyor line with a diameter of 50mm, the typical inflation pressure range is 20-50kPa, corresponding to an expansion of 1-3mm in the annular sealing airbag.

[0045] III. Typical Application Scenarios

[0046] 1. Conventional conveying

[0047] When the easy-open cover is of standard size (e.g., 65mm in diameter), inflate the annular sealing airbag to 30kPa. At this point, the annular sealing airbag expands by about 2mm, which can effectively buffer the falling speed of the easy-open cover (e.g., from 2m / s to 0.5m / s) and prevent it from tipping over.

[0048] 2. High-speed conveying

[0049] If the conveyor speed is increased to 1.5m / s, the pressure of the annular sealing airbag needs to be increased to 45kPa and the expansion amount to 3mm. The high elastic deformation of the annular sealing airbag will absorb more kinetic energy and ensure that the easy-open cover falls stably.

[0050] 3. Special specification easy-open lid

[0051] For easy-open lids with smaller diameters (such as 50mm), the inflation pressure can be reduced to 20kPa, and the expansion of the annular sealing airbag can be 1.5mm to avoid the easy-open lid getting stuck due to excessive cushioning force.

[0052] IV. Maintenance and Precautions

[0053] 1. Regular inspections

[0054] - Pressure monitoring: Before each shift, use a pressure gauge to check the pressure of the annular sealing airbag. If the deviation exceeds ±5kPa, air needs to be added or released.

[0055] - Wear inspection: Observe whether there is wear on the outer layer of the release agent (such as surface roughness Ra>0.2μm). If scratches or peeling occur, the annular sealing airbag needs to be replaced or the release layer needs to be recoated.

[0056] 2. Exception Handling

[0057] - Annular sealing airbag leakage: If a continuous drop in pressure is found, check whether the air nozzle sealing gasket is aging or whether the annular sealing airbag body is damaged, and replace the damaged parts in time.

[0058] - Uneven cushioning: If the easy-open cover tilts to one side, it may be due to insufficient local expansion of the annular sealing airbag. It is necessary to check whether the wiring harness gap in the corresponding area is blocked, or whether the annular sealing airbag is installed off-center.

[0059] 3. Environmental adaptability

[0060] - Temperature effect: In high-temperature environments (such as above 40°C), the gas inside the annular sealing airbag may expand, and the initial inflation pressure needs to be appropriately reduced (such as by 10%); in low-temperature environments (such as below 0°C), the inner rubber layer may harden, and the inflation pressure needs to be increased (such as by 10%) to maintain elasticity.

[0061] In another preferred embodiment, an inflation nozzle 2 is provided on the outer wall of the annular sealing airbag 1. This allows operators to directly connect inflation equipment (such as air pumps or air inflators) without disassembling the device or entering confined spaces, significantly improving inflation / deflation efficiency and meeting the need for rapid adjustment of damping force on the production site. Simultaneously, the external design is compatible with standardized inflation tools and existing air supply systems in the factory, reducing equipment modification costs and ensuring the convenience and versatility of the damping device.

[0062] In another preferred embodiment, the inflation nozzle 2 is a needle valve type, a British valve type, or an American valve type. It can be adapted to different inflation tools (such as ball pumps and car tire pressure gauges), meeting the diverse air source interface needs of factories without requiring customized special accessories; the needle valve type supports manual micro-adjustment (accuracy ±2kPa), while the American / British valve type supports rapid inflation (flow rate ≥5L / min), balancing fine adjustment and efficiency requirements, and improving the flexibility of damping force adjustment.

[0063] In another preferred embodiment, a sealing rubber gasket is provided between the inflation nozzle 2 and the outer wall of the annular sealing airbag 1. This effectively fills the connection gap, controls the gas leakage rate to ≤0.1kPa / h, ensures long-term stable air pressure inside the airbag, and maintains a constant buffering and limiting effect. The elastic compensation characteristics of the rubber gasket adapt to material deformation caused by temperature changes, prevents cracking at the interface due to stress concentration, and improves the sealing reliability and service life of the damping device.

[0064] In another preferred embodiment, the annular sealing airbag 1 includes a rubber inner layer and a release agent outer layer. The rubber inner layer of the annular sealing airbag (1) provides elastic support and achieves controllable adjustment of the buffer force (elastic modulus 1-5MPa) through inflation, while the outer release agent (such as PTFE or silicone) forms a low-friction surface (friction coefficient ≤0.1), avoiding adhesion or jamming between the easy-open cover and the airbag. At the same time, the smooth surface (Ra≤0.2μm) reduces the adhesion of impurities, reducing the cleaning and maintenance frequency by more than 50%. The two-layer structure works together to balance the functional requirements of elastic deformation and smooth conveying.

[0065] In another preferred embodiment, the outer layer of the release agent is a polytetrafluoroethylene (PTFE) layer or a silicone layer coated or hot-pressed onto the outer surface of the rubber inner layer. Using PTFE or silicone as the outer layer material effectively resists adhesive residue and cleaning agent erosion on the easy-open cover surface, thanks to its low surface energy (PTFE surface energy 18.5 mN / m) and temperature resistance (PTFE temperature resistance -200℃ to 260℃), ensuring no aging even after long-term use. Through coating or hot-pressing processes (bonding strength ≥ 5 N / cm), a tight bond between the release layer and the rubber inner layer is ensured, preventing delamination and improving structural reliability and functionality.

[0066] In another preferred embodiment, the thickness of the outer layer of the release agent is 0.1-0.5 mm, and the surface roughness Ra ≤ 0.2 μm. Controlling the thickness of the outer layer to 0.1-0.5 mm balances material toughness and release effect, ensuring that the outer layer deforms synchronously with the inner layer when the airbag expands, without obstructing the inner wall from passing through the wire harness gap. The ultra-smooth design with a surface roughness Ra ≤ 0.2 μm (equivalent to mirror-level precision) reduces the sliding resistance of the easy-open cover by more than 70%, and even at a measured conveying speed of 1.5 m / s, there is still no jamming, achieving precise low-friction buffering and limiting.

[0067] In another preferred embodiment, a reinforcing fiber mesh layer, woven from polyester fibers, is provided between the inner rubber layer and the outer release agent layer. Adding a polyester fiber reinforcing mesh layer (warp and weft density ≥ 100 threads / cm²) between the inner rubber layer and the outer release agent layer increases the tear resistance of the airbag to over 20kN / m, effectively preventing localized stress concentration and rupture during inflation due to uneven spacing of the wire bundles. Simultaneously, the mesh structure of the fiber mesh (pore size 1-2mm) limits excessive airbag expansion, ensuring precise matching between the inner wall expansion and the wire bundle spacing (e.g., a 4mm gap corresponds to an expansion ≤ 3mm), avoiding blockage of the delivery channel.

[0068] In another preferred embodiment, when installing the annular sealing airbag 1, double-sided tape is applied to the wiring harness of the easy-open cover tube cage conveyor line 100 at the corresponding position. Applying acrylic double-sided tape (adhesive strength ≥10N / cm) to the conveyor line harness quickly fixes the airbag position, preventing displacement caused by long-term vibration (displacement ≤0.5mm), ensuring that the inner wall expansion area is always aligned with the wiring harness gap, and avoiding buffer failure due to positional deviation. The double-sided tape installation requires no tools, takes ≤2 minutes per location, and leaves minimal residue (≤5%) after removal, facilitating equipment maintenance and airbag replacement.

[0069] In another preferred embodiment, a pressure gauge is provided on the outer wall of the annular sealing airbag 1. Operators can monitor the pressure inside the airbag in real time, determine the damping force status without additional tools, and improve adjustment efficiency by more than 60% (traditional methods require multiple test fillings); the visual pressure display ensures that the pressure of the damping devices at each station is consistent (deviation ≤ ±2kPa), avoids uneven capping caused by manual adjustment errors, and improves the automation control level and quality stability of the packaging process.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A damping device on a tab lid tube cage string, characterized by: Includes an annular sealing airbag (1) fitted outside the easy-open cover tube cage conveyor line (100); when the annular sealing airbag (1) is inflated, its inner wall can expand inward through the gap between two adjacent wire bundles of the easy-open cover tube cage conveyor line (100), forming a buffer and limiting effect on the easy-open cover inside the tube cage conveyor line.

2. A damping device on the tube cage wire of a pop can lid according to claim 1, characterized in that: An inflation nozzle (2) is provided on the outer wall of the annular sealing airbag (1).

3. A damping device on a tab lid tube cage line according to claim 2, characterized in that: A sealing rubber gasket is provided between the inflation nozzle (2) and the outer wall of the annular sealing airbag (1).

4. A damping device on the tube cage wire of a pop can lid as defined in claim 2, wherein: The air inlet (2) is a needle valve type, British type, or American type.

5. A damping device on the tube cage wire of a pop can lid as defined in claim 1, wherein: The annular sealing airbag (1) includes an inner rubber layer and an outer release agent layer.

6. The damping device on the easy-open cover tube cage line according to claim 5, characterized in that: The outer layer of the release agent is a polytetrafluoroethylene layer or a silicone layer coated or hot-pressed onto the outer surface of the inner rubber layer.

7. A damping device on a tab lid tube cage line according to claim 5, characterized in that: The outer layer of the release agent has a thickness of 0.1-0.5 mm and a surface roughness Ra≤0.2 μm.

8. A damping device on a tab lid tube cage line according to claim 5, characterized in that: A reinforcing fiber web layer is provided between the inner rubber layer and the outer release agent layer, and the reinforcing fiber web layer is woven from polyester fibers.

9. A damping device on a tab lid tube cage line according to claim 1, characterized in that: When installing the annular sealing airbag (1), double-sided tape is applied to the wire harness of the easy-open cover tube cage conveyor line (100) at the corresponding position.

10. A damping device on the tube cage wire of a pop can lid according to any one of claims 1 to 9, characterized in that: A pressure gauge is provided on the outer wall of the annular sealing airbag (1).

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