A wrapping film holder for a packaging machine

Abstract

The utility model discloses a winding film frame for packing machine, including elevating system, the film frame frame is installed on elevating system, the upper end of film frame frame is installed motor base, the upper end of motor base is installed motor board, the upper end of motor board is installed motor, the output shaft end of motor is connected with driving sprocket, and the opposite side wall between film frame frame is rotatably connected with driving rubber roll, and the upper end fixedly of driving rubber roll is equipped with driven sprocket and driving gear. The utility model increases the friction between winding film between the convex and concave texture of knurled surface, makes the stress of winding film even when stretching, avoids the packing quality problem caused by uneven stress, improves the goods packing effect, improves the wear resistance and temperature resistance of driving gear greatly, reduces the replacement frequency of driving gear, reduces maintenance cost and downtime, improves production efficiency, improves the overall performance and reliability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of stretch film holder technology, and in particular to a stretch film holder for packaging machines. Background Technology

[0002] In modern industrial production, the packaging and transportation of goods are crucial. Efficient and stable packaging methods can effectively protect goods, reduce the risk of damage during transportation, and improve logistics efficiency. Stretch film frames used in packaging machines are key equipment in the packaging process, and their performance directly affects packaging effectiveness and cost.

[0003] While traditional stretch film holders for packaging machines can achieve basic stretch packaging functions, their problems have become increasingly apparent with changing market demands and technological advancements. For example, the insufficient durability of the drive gear material necessitates frequent replacements, increasing maintenance costs and potentially impacting production efficiency. Furthermore, the use of flat belts on the rubber rollers leads to easy wear, resulting in uneven stress on the stretch film and affecting packaging quality. Therefore, we propose a new stretch film holder for packaging machines to address these issues. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a wrapping film holder for packaging machines.

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

[0006] A wrapping film holder for a packaging machine includes a lifting mechanism, on which a film holder frame is mounted. A motor base is mounted on the upper end of the film holder frame, a motor plate is mounted on the upper end of the motor base, and a motor is mounted on the upper end of the motor plate. A drive sprocket is connected to the end of the output shaft of the motor. A drive rubber roller is rotatably connected between opposite sidewalls within the film holder frame. A driven sprocket and a drive gear are fixedly fitted on the upper end of the drive rubber roller. The drive sprocket and the driven sprocket are connected to each other by a chain. Multiple staggered coarse diamond knurling patterns are evenly spaced on the circumference of the drive rubber roller. A film cylinder is mounted on one side of the film holder frame.

[0007] Preferably, a limiting block is provided through one side of the upper end of the membrane tube, and a stud is threaded to one side of the limiting block. One end of the stud abuts against one side of the membrane tube, and a rotating block is fixed to one end of the stud.

[0008] Preferably, two driven rubber rollers are rotatably connected between opposite sidewalls within the membrane frame, and a driven gear is fixedly mounted on the upper end of the driven rubber rollers, the driven gear meshing with the driving gear.

[0009] Preferably, the drive gear is made of a mixture of nylon and composite materials.

[0010] Preferably, a protective box is installed at the upper end of the membrane frame.

[0011] In this utility model, when in use:

[0012] 1. Preparation stage: Place the stretch film on the shaft of the film tube, wrap one end of the stretch film around the outer diameter of the drive roller and the driven roller, and then fix it to the bottom of the goods or pallet to prepare for subsequent stretching and packaging, ensuring that the stretch film can be stretched and wrapped smoothly.

[0013] 2. Power transmission stage: The motor is connected to the film frame via the motor plate and motor base. The motor is connected to the drive sprocket, which transmits the motor's power to the drive roller and drive gear. Since the drive roller is connected to the driven sprocket and drive gear, when the motor starts, the power is transmitted to the drive roller and drive gear through the sprocket, causing them to start rotating.

[0014] 3. Stretching and wrapping stage: After stretching, the stretch film is released by the driven rubber roller and wrapped around the goods. As the goods rotate on the packaging machine, the stretch film is continuously released to complete the wrapping and packaging of the goods.

[0015] This utility model has the following advantages:

[0016] 1. The outer diameter of the rubber roller is knurled and post-processed. The raised and recessed texture of the knurled surface increases the friction between the roller and the stretch film, so that the stretch film is subjected to uniform force when stretched, avoiding packaging quality problems caused by uneven force and improving the packaging effect of goods.

[0017] 2. The material of the drive gear has been changed from carbon structural steel to nylon 66 and special composite materials have been added, which has greatly improved the wear resistance and temperature resistance of the drive gear, reduced the replacement frequency of the drive gear, reduced maintenance costs and downtime, and improved production efficiency.

[0018] 3. Improved equipment performance: The lightweight membrane frame with low inertia makes the equipment more stable during operation, consumes less energy, and improves the overall performance and reliability of the equipment.

[0019] In summary, the raised and recessed texture of the knurled surface of this invention increases the friction between the knurled surface and the stretch film, ensuring uniform stress on the stretch film during stretching. This avoids packaging quality problems caused by uneven stress, improves the packaging effect, significantly enhances the wear resistance and temperature resistance of the drive gear, reduces the frequency of drive gear replacement, lowers maintenance costs and downtime, improves production efficiency, and enhances the overall performance and reliability of the equipment. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 This is a diagram showing the installation structure of this utility model;

[0022] Figure 3 This is a front view of the present invention;

[0023] Figure 4 This is a structural diagram of the active rubber roller of this utility model.

[0024] In the diagram: 1. Motor, 2. Motor plate, 3. Motor base, 4. Driven sprocket, 5. Drive gear, 6. Film frame, 7. Drive roller, 8. Film tube, 9. Limit block, 10. Rotating block, 11. Driven roller, 12. Protective box, 13. Coarse diamond knurling, 14. Lifting mechanism, 15. Stud, 16. Drive sprocket. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1-4 A wrapping film holder for a packaging machine includes a lifting mechanism 14. The lifting mechanism 14 can adopt the common screw and nut drive method. Screw and nut drive has the characteristics of high precision and good stability, while chain drive is more suitable for heavy-duty and high-speed motion.

[0027] A membrane frame 6 is installed on the lifting mechanism 14. A motor base 3 is installed on the upper end of the membrane frame 6. The motor base 3 is made of high-strength aluminum alloy material and the surface is anodized, which not only has good corrosion resistance, but also effectively reduces its own weight.

[0028] A motor plate 2 is installed on the upper end of the motor base 3, and a motor 1 is installed on the upper end of the motor plate 2. The speed of the motor 1 is adjusted by a frequency converter to adapt to the packaging needs of stretch film of different thicknesses and materials as well as goods of different sizes.

[0029] The output shaft of motor 1 is connected to a drive sprocket 16. A drive roller 7 is rotatably connected between opposite side walls inside the film frame 6. A driven sprocket 4 and a drive gear 5 are fixedly mounted on the upper end of the drive roller 7. The drive sprocket 16 and the driven sprocket 4 are connected to each other by a chain. The sprocket-drive gear transmission method can effectively transmit the power of the motor to the drive roller 7. Multiple staggered coarse diamond knurling 13 are provided at equal intervals on the circumference side wall of the drive roller 7. These knurlings can increase the friction between the wrapping film and the drive roller 7 and prevent the wrapping film from slipping during transmission. The depth and spacing of the coarse diamond knurling 13 are precisely calculated to ensure sufficient friction without causing excessive damage to the wrapping film.

[0030] A film cylinder 8 is installed on one side of the film frame 6. The stretching degree of the wrapping film can be controlled by adjusting the speed of the motor 1 and the friction of the active rubber roller 7. After the goods are wrapped and packaged, the operator can use a knife to cut the wrapping film to complete the entire packaging process.

[0031] A limiting block 9 is provided through one side of the upper end of the membrane cylinder 8. A stud 15 is threadedly connected to one side of the limiting block 9. One end of the stud 15 abuts against one side of the membrane cylinder 8. A rotating block 10 is fixed to one end of the stud 15. The limiting block 9 and the stud 15 are made of high-quality stainless steel, which has good corrosion resistance and wear resistance, ensuring that they will not rust or be damaged during long-term use.

[0032] Two driven rubber rollers 11 are rotatably connected between opposite sidewalls inside the membrane frame 6. A driven gear is fixedly mounted on the upper end of the driven rubber roller 11. The driven gear meshes with the driving gear 5. The driving gear 5 is made of a mixture of nylon 66 material and composite material. The ratio of nylon 66 material and composite material has been optimized through multiple tests to achieve the best performance balance. It has good strength, wear resistance and self-lubrication, which can reduce noise and wear during transmission. The driven gear can also be made of a mixture of nylon 66 material and composite material as needed.

[0033] The upper end of the membrane frame 6 is equipped with a protective box 12. The motor manufacturer is required to use the specified flange connection dimensions and connection method so that both DC and AC motors can be fixed in place and share a motor base. When replacing the motor, only the motor board needs to be replaced at the same time. This not only improves the commonality of parts and reduces design and production costs, but also facilitates equipment maintenance and upgrades, reduces the types and quantities of different parts, reduces the complexity of procurement and processing, shortens the procurement cycle, reduces parts inventory backlog, reduces the company's capital occupation and warehousing costs, and improves the efficiency of material management.

[0034] In this utility model, when in use:

[0035] 1. Preparation stage: Place the stretch film on the shaft of the film cylinder 8, wrap one end of the stretch film around the outer diameter of the active rubber roller 7 and the driven rubber roller 11, and then fix it to the bottom of the goods or pallet to prepare for subsequent stretching and packaging, ensuring that the stretch film can be stretched and wrapped smoothly.

[0036] 2. Power transmission stage: Motor 1 is connected to the film frame 6 via motor plate 2 and motor base 3. The motor 1 is connected to the drive sprocket 16, which transmits the power of the motor 1 to the drive rubber roller 7 and drive gear 5. Since the drive rubber roller 7 is connected to the driven sprocket 4 and drive gear 5, when the motor 1 starts, the power will be transmitted to the drive rubber roller 7 and drive gear 5 through the sprocket, causing it to start rotating.

[0037] 3. Stretching and wrapping stage: After stretching, the stretch film is released by the driven rubber roller 11 and wraps the goods. As the goods rotate on the packaging machine, the stretch film is continuously released to complete the wrapping and packaging of the goods.

[0038] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A wrapping film magazine for a packaging machine, comprising a lifting mechanism (14), characterized in that, The lifting mechanism (14) is equipped with a film frame (6), the upper end of the film frame (6) is equipped with a motor base (3), the upper end of the motor base (3) is equipped with a motor plate (2), the upper end of the motor plate (2) is equipped with a motor (1), the output shaft of the motor (1) is connected to a drive sprocket (16), the opposite side walls inside the film frame (6) are rotatably connected to a drive rubber roller (7), the upper end of the drive rubber roller (7) is fixedly fitted with a driven sprocket (4) and a drive gear (5), the drive sprocket (16) and the driven sprocket (4) are connected to each other by a chain, a plurality of staggered coarse diamond knurling (13) is provided on the circumference side wall of the drive rubber roller (7), and a film cylinder (8) is installed on one side of the film frame (6).

2. A wrapping film magazine for a packaging machine according to claim 1, characterized in that: A limiting block (9) is provided through one side of the upper end of the membrane tube (8). A stud (15) is threaded onto one side of the limiting block (9). One end of the stud (15) abuts against one side of the membrane tube (8). A rotating block (10) is fixed to one end of the stud (15).

3. A wrapping film holder for a packaging machine according to claim 1, characterized in that: Two driven rubber rollers (11) are rotatably connected between opposite sidewalls within the membrane frame (6). A driven gear is fixedly mounted on the upper end of the driven rubber roller (11), and the driven gear meshes with the driving gear (5).

4. The wrapping film holder for a packaging machine according to claim 1, characterized in that: The drive gear (5) is made of a mixture of nylon 66 material and composite material.

5. A wrapping film holder for a packaging machine according to claim 1, characterized in that: A protective box (12) is installed at the upper end of the membrane frame (6).

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