A forklift cylinder head seat packing device

Abstract

The application relates to the technical field of packaging equipment, in particular to a forklift cylinder head seat packaging equipment which comprises a rack, the rack is vertically fixedly installed on the ground, a rotating platform is horizontally installed on the rack, a detection device for detecting the use condition of a film roll is further installed on the rack, and a replacing device for automatically replacing the film roll after the film roll is used up is further installed on the rack. Compared with the existing forklift cylinder head seat packaging equipment, the forklift cylinder head seat packaging equipment adopts the detection device to realize real-time detection of the use condition of the film roll, and the replacing device is arranged to automatically replace the film roll after the film roll is used up and automatically guide the film roll, so that the problem that the rotating film winding packaging machine used by the existing forklift cylinder head seat needs manual replacement due to the rapid consumption of the film roll during automatic and rapid packaging production is solved.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment technology, specifically a forklift cylinder head seat packaging device. Background Technology

[0002] Forklift cylinder head units are an important piece of equipment on forklifts. After production, they need to be boxed and wrapped in film for waterproof packaging before transportation. The commonly used waterproof packaging equipment for forklift cylinder head units is a rotary stretch wrapping machine.

[0003] Existing rotary stretch film balers require manual placement of boxes onto the rotating platform before starting the machine. The platform then rotates, wrapping the film around the boxes to complete the baling. While this method is suitable for situations where manual loading of boxes is inefficient, in highly automated, fast-paced production lines, the frequent and rapid baling processes consume the film rolls quickly. This necessitates frequent roll changes, which require manual removal of the used roll, installation of a new roll, and securing the film to the turntable's clamps – a cumbersome process. The entire production line must be stopped during the film roll replacement process, and workers need to monitor the film rolls in real time during production to replace them when they are used up or about to run out. This wastes manpower, especially when multiple production lines are packaging at the same time. If workers cannot replace the film rolls in time after they run out, it will cause goods to pile up, production to stop, or goods to be packaged in a substandard manner.

[0004] To address this, a forklift cylinder head seat packaging device is proposed, which can automatically detect the usage status of the material rolls and automatically replace them after use, and perform automatic feeding operations without the need for real-time manual monitoring. Summary of the Invention

[0005] The purpose of this invention is to provide a forklift cylinder head seat packaging device, which uses a detection device to detect the usage of the film roll and a replacement device to automatically replace the film roll after it is used up, thus solving the problem that rotary stretch wrapping machines require frequent manual replacement of film rolls during rapid automatic production.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A forklift cylinder head seat packaging device, comprising:

[0008] The frame is vertically and fixedly installed on the bottom surface;

[0009] A rotating platform is horizontally mounted on the frame; a loading conveyor belt is installed in front of the rotating platform to transport items ready for packaging onto the platform; a unloading conveyor belt is installed on the left side of the rotating platform to transport packaged items away from the platform; an unloading device is installed on the right side of the rotating platform to move packaged items from the platform onto the unloading conveyor belt. This unloading device can be either a cylinder pushing the packaged items onto the unloading conveyor belt or a robotic arm pushing the packaged items onto the unloading conveyor belt; film clamps are installed on the rotating platform to attach film to the platform; film rolls are made of waterproof film used for packaging items; and a film roll fixing platform is also included. A film roll fixing platform is vertically slidably mounted on the frame for mounting film rolls. The platform is driven up and down by an electric push rod or an electric slide. A cutting device, a swing-arm type, is rotatably mounted on the side of the frame for cutting the film after packaging. The cutting device consists of a swing arm with a cutting blade at its front end. After packaging, the swing arm rotates, moving the cutting blade to the film connecting to the packaged item to cut it. The frame also includes a detection device for monitoring the film roll usage. This detection device can employ a tension sensor, pressure sensor, or laser sensor. A replacement device, which can automatically replace the film roll after it is used up, can be a robotic arm or other mechanism or equipment capable of replacing the film roll. The detection device monitors the film roll usage and automatically replaces the used roll, eliminating the need for manual replacement, thus increasing the automation level of the packaging machine and improving production efficiency compared to manual replacement.

[0010] Preferably, the replacement device includes a material preparation tray rotatably mounted on the top of the frame for storing film rolls. The material preparation tray is driven to rotate by a stepper motor or a servo motor. Multiple material preparation posts for suspending spare film rolls are vertically and circumferentially fixedly mounted on the material preparation tray. Clamping posts for clamping pre-drawn film from the spare film rolls are also circumferentially fixedly mounted on the material preparation tray. The diameter of the material preparation posts is 30%-40% smaller than the inner diameter of the inner cylinder of the film roll. Each clamping post has a groove to facilitate drawing out the film. The clamping mechanism consists of a pre-loading column and a clamping column, each with two hooks rotatably mounted at its bottom. These hooks are symmetrically installed on the same diameter of the column. Rotating the hooks downwards opens them, while rotating them upwards clamps them. Torsion springs are installed at the rotatable positions of the hooks, ensuring they remain open unless subjected to external force. The total length of the two open torsion springs is greater than the diameter of the inner cylinder of the film roll. A hollow mounting platform for the film roll is rotatably mounted on the film roll fixing platform. The film roll has a mounting post that can rotate in a vertical plane to be parallel or perpendicular to the film roll fixing platform. The rotation of the mounting post is driven by a small stepper motor. The outer diameter of the mounting post is 10%-15% smaller than the inner diameter of the film roll's inner cylinder, and the inner diameter of the mounting post is 10%-20% larger than the outer diameter of the preparation post. A lever is also horizontally slidably mounted on the film roll fixing platform. When the mounting post rotates to a horizontal position, the lever is directly below and tangent to the mounting post. The lever is connected to a drive device that drives its linear movement. The lever is used to move the used film... The remaining inner cylinder of the material roll is peeled off from the mounting post. The replacement device also includes a gripper horizontally slidably mounted on the cutting device for gripping the film for feeding operations. The gripper is connected to a second drive device that can drive the gripper to move linearly. The gripper is a scissor-type gripper, driven by a small stepper motor. One side of the gripper always remains vertical, while the other side is initially positioned perpendicular to the vertical side, extending horizontally towards the material roll fixing platform. One side of the horizontally extended gripper can rotate towards the vertical side under the drive of the motor. Both drive device one and drive device two can be cylinders, electric guide rails, or other devices or mechanisms capable of driving objects to move linearly. The cutting device can slide vertically on the frame like the material roll fixing platform. The cutting device is also driven up and down by an electric slide, electric push rod, or other mechanism or device capable of driving objects to move linearly.The worker inserts the inner cylinder of the spare film roll from bottom to top into the preparation column on the spare tray. During insertion, the two hooks close and tighten. After the spare film roll has completely passed through the two hooks, the two hooks reopen under the action of the torsion spring. At this time, because of the presence of the two hooks, the film roll cannot fall and is hooked on the preparation column. Then, the worker leads out a section of the film from the film roll and inserts it from bottom to top into the groove of the clamping column to hang the film on the clamping column. When replacing used film rolls, the vertical mounting column first rotates the inner cylinder of the film roll to a horizontal position under the drive of the motor. Then, the drive unit moves the lever from the rotating end of the mounting column to the other end horizontally. During this movement, the lever peels the inner cylinder of the film roll off the mounting column. When the drive unit reaches its limit position, the motor drives the mounting column back to a vertical position. Then, the film roll fixing platform and the cutting device move upward together. The top of the mounting column is directly opposite the spare film roll. After the mounting column moves upward into position, the two... The hooks are pressed shut by the inner wall of the mounting column, and the material preparation column is inserted into the middle of the mounting column. Without the two hooks, the film roll falls along the mounting column under gravity and is eventually stopped by the mounting column. When the film roll fixing platform rises to its limit position, the cutting device also rises to its limit position. Then, the swing arm of the cutting mechanism rotates towards the film roll fixing platform. When the swing arm of the cutting device rotates to the set position, it stops rotating. One edge of the scissor-shaped gripper, in a horizontal position, passes between the material preparation column and the clamping column as the swing arm of the cutting mechanism rotates. When the swing arm of the cutting device reaches the designated position and stops, one side of the horizontal gripper is driven by a motor to rotate towards the vertical side. As it moves towards the vertical side to clamp, it pulls the pre-drawn film roll between the material preparation column and the clamping column towards the vertical side of the gripper, ultimately clamping the film. After the grippers clamp, both the cutting device and the roll fixing platform move downwards simultaneously. When they reach the bottom, the grippers, holding the film, move horizontally along the cutting device's swing arm towards the film clamp under the drive of the second drive device. When the drive device moves the grippers to their limit position, the film clamp closes upwards, clamping the lower part of the film held by the grippers. The grippers then release and are driven back to their original position by the drive device. The material preparation tray, after the roll fixing tray reaches the bottom, is also rotated by a motor, rotating the next material preparation column containing the spare film roll to the aligned mounting column. The movement trajectory of the grippers is offset from the position of the film clamp, and there is no interference during the return movement. Although there is misalignment, by placing the film held by the grippers within the fan-shaped trajectory formed during the clamping process, the film clamp can stably hold the film. This achieves automatic roll changing and automatic feeding of the changed roll to the film clamp, eliminating the need for manual operation, improving automation, reducing labor costs, and increasing production efficiency.The operator only needs to install the spare film rolls onto the preparation column on the preparation tray, and the equipment does not need to be stopped when installing the spare film rolls on the preparation tray.

[0011] Preferably, the detection device includes an infrared ranging sensor fixedly mounted on the frame. The usage status of the film roll is determined by measuring the distance from the sensor. As the film roll is consumed, its diameter decreases, and the distance from the infrared ranging sensor increases. By setting a measurement value standard for the sensor, it can be determined that the film roll has been used up when the distance exceeds the set value. Subsequently, the infrared ranging sensor feeds back the signal to the system, and the system controls the replacement device to replace the film roll.

[0012] Optionally, the detection device can be equipped with a pressure sensor that detects changes in the weight of the film roll below the mounting column. When the film roll is installed on the mounting column, the support plate holds the film roll, and the pressure sensor detects the weight of the film roll. The user sets a weight standard, and when the pressure sensor detects a pressure value lower than the set value, it determines that the film roll is used up and then sends feedback to the system, which then activates the replacement device to replace the film roll. Using a pressure sensor to detect the weight of the film roll to determine if it is used up is more intuitive, and the pressure sensor is not affected by the external environment. In contrast, the infrared distance sensor's detection accuracy is affected by dust, and dust adhesion also affects its detection. Furthermore, the pressure sensor may experience data fluctuations due to the up-and-down movement of the film roll during packaging, affecting detection and even causing the detection data to drop to zero, leading to incorrect system judgments. While the infrared distance sensor's detection accuracy is also affected by the oscillation caused by the gap between the inner cylinder of the film roll and the mounting column, it does not have the possibility of data dropping to zero and is more stable than the pressure sensor.

[0013] Preferably, an alarm light is installed on the material preparation tray, and a pressure sensor is installed on the frame to detect the remaining film rolls on the tray. The pressure sensor is electrically connected to the alarm light. The pressure sensor is installed at the contact point between the material preparation tray and the frame. The pressure sensor detects the total mass of the material preparation tray, but when the detected value of the pressure sensor is lower than a set value, the alarm light will sound, prompting the worker to replenish the material preparation tray in time. This prevents the film rolls from being used up and not being replaced in time, which could lead to unqualified packaging and improves production stability.

[0014] Preferably, the second drive unit is equipped with an ultrasonic sensor for detecting whether the feeding process is normal. The ultrasonic sensor detects the distance as the gripper grasps the film and feeds it. It uses ultrasonic signals to detect if there is an object in front. If the ultrasonic sensor detects an object within a predetermined range, the feeding step is running normally. If no object is detected within the predetermined range, the gripper has failed to grasp the film for feeding. The ultrasonic sensor then feeds back a signal to the system, which sounds an alarm to prompt the worker to handle the situation. This further improves the stability of the system.

[0015] Preferably, an air outlet is provided on the lower side of the frame, directly opposite the mounting column. The air outlet is connected to an external air source and is a rectangular opening with a width of 10-15mm. The air outlet is vertically positioned on the lower side of the frame, with a height equal to the height of the film roll. The center of the air outlet is aligned with the center line of the mounting column. The air outlet is electrically connected to an ultrasonic sensor. When the film roll fixing platform descends to its lowest point, before the second drive device moves the gripper, if the ultrasonic sensor detects that the gripper has not grasped the film, the gripper reopens. The air outlet will then blow out a uniform and stable airflow. After contacting the film roll, the airflow will disperse along the outer edge of the film roll to both sides due to the Coanda effect and blow onto the back of the film roll opposite the air outlet. Since the wind speed and force on both sides are basically the same, the pre-drawn film will be blown and straightened, allowing the gripper to grasp it again. After the film is straightened, the grippers attempt to pick it up again, and an ultrasonic sensor determines whether the gripping was successful. If the gripping fails three times, it indicates that the film may have stuck to other areas or that other reasons prevent it from being straightened. In this case, the system will issue an alarm to prompt the worker to handle the situation. This further improves the system's ability to automatically solve problems, enhances equipment automation, and improves system stability.

[0016] Preferably, a pressure roller one is vertically and rotatably mounted on the material roll fixing platform. A bracket is oscillatingly mounted next to the pressure roller one, and the bracket is driven to oscillate by a small motor. A pressure roller two is rotatably mounted on the oscillating end of the bracket. Pressure roller one and pressure roller two are made of smooth, hard rubber. After the grippers feed the film, the oscillating bracket brings pressure roller two closer to the pressure roller, eventually causing pressure roller one and pressure roller two to come into contact with each other. The contacted pressure roller one and pressure roller two clamp the film after feeding. Through the clamping of pressure roller one and pressure roller two, the tension of the film is reduced by pressure roller one and pressure roller two when it is pulled. At the same time, the film is kept taut during the packaging process, avoiding the problem that the tension of the film directly pulls on the film roll during the packaging process. This prevents the film roll from being stretched and then rapidly rotating out of the packaging, which would cause the film wrapped around the packaged items to not be taut, resulting in poor packaging effect and improving the production stability of the equipment.

[0017] Preferably, both pressure roller one and pressure roller two are provided with spiral grooves. The spiral grooves are located on the upper and lower sides of pressure roller one and pressure roller two, with the spiral directions of the upper and lower spiral grooves being opposite. The spiral grooves make pressure roller one and pressure roller two resemble screws. When pressure roller one and pressure roller two clamp the film and are rotated by the film, the upper spiral surfaces of pressure roller one and pressure roller two exert an upward force on the film when they adhere to it, while the lower spiral surfaces of pressure roller one and pressure roller two exert a downward force on the film when they adhere to each other and are pulled and rotated by the film. The forces exerted on the film by the upper and lower sides of pressure roller one and pressure roller two ensure that the film remains stretched during the packaging process, improving the packaging effect of the packaging machine.

[0018] Preferably, each of the preparation columns has two symmetrically arranged circular grooves. A clamping block is slidably installed inside each groove, with its outer end being hemispherical. A spring is installed between each clamping block and the bottom of the groove. When the spare film roll is loaded into the preparation column, the inner wall of the film roll's inner cylinder first presses the two clamping blocks, forcing them into the circular grooves. Then, the two clamping blocks open inside the film roll's inner cylinder and clamp the film roll. When the mounting column moves upward and the two hooks are retracted into the preparation column, the two clamping blocks, under the action of the springs, prevent the film roll on the preparation column from falling rapidly to the mounting column below. This avoids the film roll falling rapidly onto the mounting column and tearing off the film pre-drawn onto the clamping column, causing the clamps to fail to hold the pre-drawn film, ultimately leading to material feeding failure. This further improves the stability of the equipment's material feeding process.

[0019] Preferably, the support is equipped with a limiting rod to prevent the film roll from jumping during use. The limiting rod engages with the top of the mounting column when the support drives the second pressure roller to swing towards it, coordinating with the first pressure roller to clamp the film. This limits the vertical movement of the film roll during packaging, improving the operational stability of the equipment and enhancing the packaging effect.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The forklift cylinder head seat packaging equipment of the present invention, compared with the existing forklift cylinder head seat packaging equipment, adopts a detection device to detect the usage of film rolls in real time, and also sets up a replacement device to automatically replace the film rolls after they are used up and automatically feed the new film. This solves the problem that existing rotary wrapping machines using forklift cylinder head seats often require manual replacement due to the rapid consumption of film rolls during automated and rapid packaging production. This reduces the demand for manpower in production, avoids the phenomenon that the packaging speed will be reduced or the product packaging will be unqualified due to the inability of manual replacement of used film rolls, and improves the production speed of the equipment.

[0022] 2. The forklift cylinder head seat packaging device of the present invention is equipped with a pressure sensor to detect the usage status of the spare film rolls on the preparation tray, and an ultrasonic ranging sensor is also installed at the second drive device. The ultrasonic ranging sensor detects whether the film is gripped before the material is fed, so that the system can judge the working status of the equipment in real time and improve the stability of the system.

[0023] 3. The forklift cylinder head seat packaging device of the present invention has an air blowing port on the frame. When it is detected that the gripper fails to hold the film firmly before feeding the material, the film is blown again through the air blowing port so that it extends vertically. The vertically extended film cooperates with the gripper to grab it again, which further improves the automatic feeding function of the device and enhances the stability of the feeding of the material. Attached Figure Description

[0024] Figure 1 This is a front view of the three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is a rear view of the three-dimensional structural schematic diagram of the present invention;

[0026] Figure 3 For the present invention Figure 2 Enlarged view of A in the middle;

[0027] Figure 4 For the present invention Figure 2 Enlarged view of B in the middle;

[0028] Figure 5 This is a three-dimensional structural diagram of the material roll fixing platform rising to pick up materials in this invention;

[0029] Figure 6 This is a schematic diagram illustrating the action of the gripper passing through the material preparation column and the clamping column during material handling in this invention.

[0030] Figure 7 This is a schematic diagram illustrating the action of removing the used film roll from the mounting post according to the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of pressure roller one and pressure roller two of the present invention;

[0032] Figure 9 This is a schematic diagram of the internal structure of the material preparation column and the installation column of the present invention;

[0033] Figure 10 For the present invention Figure 9 Enlarged view of C;

[0034] Figure 11 This is a schematic diagram of the structure during the material feeding process of this invention;

[0035] Figure 12For the present invention Figure 11 A magnified view of D.

[0036] In the diagram: 1. Frame; 2. Rotating platform; 3. Feeding conveyor belt; 4. Unloading conveyor belt; 5. Unloading device; 6. Film clamp; 7. Film roll; 8. Roll fixing platform; 9. Cutting device; 10. Material preparation tray; 11. Material preparation column; 12. Clamping column; 13. Hook; 14. Mounting column; 15. Drive device one; 16. Lever; 17. Drive device two; 18. Gripper; 19. Infrared ranging sensor; 20. Alarm light; 21. Pressure sensor; 22. Ultrasonic sensor; 23. Air outlet; 24. Pressure roller one; 25. Pressure roller two; 26. Circular groove; 27. Clamping block; 28. Spring; 29. ​​Limiting rod; 30. Bracket. Detailed Implementation

[0037] Example 1:

[0038] refer to Figures 1 to 12 A forklift cylinder head seat packaging device includes: 1. a frame; 2. a rotating platform; 3. a feeding conveyor belt; 4. a discharging conveyor belt; 5. a unloading device; 6. a film clamp; 7. a film roll; 8. a film roll fixing platform; 9. a cutting device; 10. a material preparation tray; 11. a material preparation column; 12. a clamping column; 13. a hook; 14. a mounting column; 15. a drive device one; 16. a lever; 17. a drive device two; 18. a gripper; 19. an infrared distance sensor; 20. an alarm light; 21. a pressure sensor; 22. an ultrasonic sensor; 23. an air outlet; 24. a pressure roller one; 25. a pressure roller two; 26. a circular groove; 27. a clamping block; 28. a spring; 29. ​​a limit rod; and 30. a bracket.

[0039] A frame 1 is fixedly mounted on the base. A rotating platform 2 is rotatably mounted in front of the frame 1, driven by a servo motor. A feeding conveyor belt 3 is mounted in front of the rotating platform 2. A discharging conveyor belt 4 is mounted on the right side of the rotating platform 2, and a unloading device 5 is mounted on the left side. The unloading device 5 uses a cylinder to push the packaged items on the rotating platform 2 onto the unloading conveyor belt 4 for unloading. A film clamp 6 is mounted on the edge of the rotating platform 2. A material roll fixing platform 8 is slidably mounted on the frame 1, and its up-and-down movement on the frame 1 is controlled by an electric screw. A cutting device 9 is mounted on the right side of the frame 1. The cutting device 9 is also controlled by an electric screw, allowing it to move up and down on the frame 1. A cutter for cutting the film is located at the front end of the cutting device 9. A drive unit 2 17 is horizontally mounted on the cutting device 9. The drive unit 2 17 is an electric slide table. A gripper 18 is mounted on the slide table of the drive unit 2 17. One side of the gripper 18 is vertically downward, and the other side is horizontally to the left. The vertical side is fixed, while the horizontally to the left side can rotate downward and cooperate with the vertical side to clamp the film 6. The gripper 18 is driven by a small stepper motor. An ultrasonic distance sensor is also installed on the slide. A drive unit 15 is horizontally installed on the roll fixing platform 8. The drive unit 15 is also an electric slide. A lever 16 is horizontally fixed on the slide of the drive unit 15. A mounting post 14 for mounting the film roll 7 is rotatably installed on the roll fixing platform 8. The mounting post 14 is a hollow cylinder and is driven by a small stepper motor. The mounting post 14 can rotate between horizontal and vertical in a vertical plane under the drive of the motor. An air outlet 2 is opened on the lower side of the frame 1, which is directly opposite the axis of the mounting post 14. 3. An infrared ranging sensor 19 is installed directly above the air outlet 23. A pressure roller 24 is vertically and rotatably installed on the left side of the mounting column 14 on the material roll fixing platform 8. A bracket 30 is rotatably installed on the right side of the mounting column 14 on the material roll fixing platform 8. The bracket 30 is driven by a small stepper motor. A pressure roller 25 is rotatably installed at the front end of the bracket 30. A limiting rod 29 is horizontally fixed at the top end of the bracket 30. Spiral grooves are opened on both the upper and lower sides of the pressure roller 24 and the pressure roller 25. The rotation directions of the spiral grooves on the upper and lower sides of the pressure roller 24 and the pressure roller 25 are opposite.A material preparation tray 10 is rotatably mounted on the top of the frame 1. The material preparation tray 10 is circular and driven by a stepper motor. A pressure sensor 21 is installed at the mounting position of the material preparation tray 10 and the frame 1. Five material preparation columns 11 are vertically welded to the lower surface of the material preparation tray 10. The five material preparation columns 11 are evenly distributed around the lower surface of the material preparation tray 10. The axis of the mounting column 14 is on the rotational trajectory of the five material preparation columns 11. Outside the evenly distributed circumference of the five material preparation columns 11, there are also evenly distributed circumferences... Five clamping columns 12 correspond one-to-one with five preparation columns 11. The center distance between each clamping column 12 and its corresponding preparation column 11 is 150mm. Each clamping column 12 has a groove on its lower side. Each preparation column 11 has two hooks 13 rotatably mounted on its bottom. Each mounting column 14 has two circular slots 26 on its upper side. Each circular slot 26 contains a clamping block 27. A spring 28 is installed between each clamping block 27 and the bottom of the circular slot 26. An alarm light 20 is installed on the top of the preparation tray 10.

[0040] The specific workflow is as follows:

[0041] Before starting work: Insert the film roll 7 vertically from bottom to top into the preparation column 11, and hang it on the preparation column 11 under the action of the hook 13. Then, pull out a section of film clip 6 from the film roll 7 and insert it into the groove of the corresponding clip column 12. Repeat the above operation until the film rolls are installed on all the preparation columns 11.

[0042] During operation: After the film roll 7 is used up, the system briefly pauses packaging the items. The rotating platform 2 drives the film clamp 6 back to its initial position and stops rotating. The film clamp 6 on the rotating platform 2 opens, and the motor drives the bracket 30 to rotate to the left, causing the pressure roller 25 to move away from the pressure roller 1 24. Then, the motor drives the mounting column 14 to rotate from vertical to horizontal towards the drive device 15. After the mounting column 14 rotates to the horizontal, the drive device 15 begins to move horizontally to the left with the lever 16. During the movement, the lever 16 peels the inner lining of the used film roll 7 from the mounting column 14. After peeling, the motor drives the mounting column 14 back to the vertical position, and the drive device 15 drives the lever 16 to reset. Then, the roll fixing platform 8 and the cutting device 9 simultaneously begin to move upward. When they reach the top, since the mounting column 14 is directly opposite the top preparation column 11, the hook 13 at the bottom of the preparation column 11 is squeezed by the side wall of the mounting column 14 and begins to rotate upward. The installation column 14 then moves upwards, enclosing the material preparation column 11. As the installation column 14 continues to move and presses the two clamping blocks 27 into the circular groove 26, the inner cylinder of the film roll 7 is completely enclosed on the installation column 14. Then, the cutting device 9 begins to rotate towards the installation column 14. When the cutting device 9 rotates, it drives the horizontal side of the clamping jaw 18 to pass between the material preparation column 11 and the clamping column 12. When the cutting device rotates to the front of the frame 1, it stops rotating. Then, the motor controls the horizontal side of the clamping jaw 18 to rotate downwards and close towards the vertical side. During the closing process, it drives the film that has been manually pulled out and clamped in the groove of the clamping column 12 to move towards the vertical side of the clamping jaw 18. Finally, the film that has been manually pulled out is clamped by the clamping jaw 18. Then, the cutting device 9 and the roll fixing platform 8 move downwards simultaneously. Then, the material preparation tray 10 rotates by one-fifth of an angle so that the material preparation column 11 containing the spare film roll 7 faces the installation column 14 for the next replacement. The pressure sensor 21 continuously monitors the mass of the material preparation tray 10. If the mass of the material preparation tray 10 is detected to be empty, the alarm light 20 will sound to remind the worker to replenish it immediately. When the material roll fixing platform 8 reaches its bottom, the drive device 2 17 drives the gripper 18 to pull the film towards the film clamp 6 of the rotating platform 2. When the drive device 2 17 reaches its limit position, the film clamp 6 closes upward to clamp the film. After the film is clamped by the film clamp 6, the gripper 18 opens and releases the film to return to its initial state. Then, the drive device 2 17 drives the gripper 18 to return to its original position.Before the drive unit 2 17 moves the gripper 18 toward the film clamp 6, the ultrasonic sensor 22 emits ultrasonic waves to measure the distance to the object in front. If no object is detected within the set range, it means that the film is not clamped by the gripper 18. At this time, the system controls the air outlet 23 to blow out a uniform and stable wind. The wind blown out by the air outlet 23 straightens the drawn film again. Then the gripper 18 clamps the film again. After the gripper 18 clamps, the ultrasonic sensor 22 re-detects. If it is normal, the drive unit 2 17 drives the gripper 18 to guide the material toward the film clamp 6. If it is not normal, the air outlet 23 is restarted and the film is clamped again. If the gripper 18 still cannot be detected to be clamping the film after three times, the system controls the alarm to light up and issue an alarm, which is then handled manually. After the feeding is completed and the drive device 2 17 and gripper 18 are reset, the cutting device 9 rotates away from the mounting post 14 to return to its original position. Then, the motor drives the bracket 30 to rotate towards the pressure roller 1 24, and the pressure roller 2 25 drives the film to move towards the pressure roller 1 24. After the bracket 30 rotates to its position, the pressure roller 1 24 and the pressure roller 2 25 clamp the film 6, and the bracket 30 stops rotating. When the bracket 30 rotates to its position, the limiting rod 29 above the bracket 30 also rotates to the top of the mounting post 14. The limiting rod 29 prevents the film roll 7 from jumping up and down when packaging the object. The opposite spiral grooves on the upper and lower sides of the pressure roller 1 24 and the pressure roller 2 25 can give an upward force to the upper side of the film and a downward force to the lower side of the film when the film pulls the pressure roller 1 24 and the pressure roller 2 25 to rotate, so that the film opens as much as possible. Infrared ranging sensor 19 is positioned directly opposite the film roll 7 on mounting post 14. During the packaging process, it detects the distance to objects in front. When the infrared ranging sensor 19 detects a distance greater than a set distance, it determines that the film roll 7 is used up. The system then repeats this process to replace the film roll 7. Due to the accuracy limitations of the infrared ranging sensor 19 and the thinness of the film, the film may not be completely used up when the roll is detected as empty. In this case, the cutting device 9 can be controlled to cut the film first, then reset, and finally the replacement operation can be performed according to the above steps.

[0043] After the film roll 7 is replaced, the system restarts to package the items.

[0044] Example 2:

[0045] Unlike Embodiment 1, the depletion detection of the film roll 7 is performed using a pressure sensor instead of the infrared distance sensor 19. Using a pressure sensor to detect the film roll 7 is less affected by the external environment than using an infrared distance sensor; it can stably detect the usage status of the film roll 7 in dusty or humid environments, while the infrared distance sensor 19 is easily affected by the environment. However, the pressure sensor's detection accuracy can decrease when the film roll 7 vibrates during packaging, requiring strict control of the vibration and high installation accuracy of the limit rod 29. Functions and implementation processes not described in this embodiment are the same as in Embodiment 1, and therefore will not be elaborated upon further.

[0046] The above two embodiments are merely illustrative examples among the many embodiments of the present invention. Various variations can be made without departing from the principles of the present invention. Embodiments created by those skilled in the art through modifications to the present invention without creative effort are also within the scope of protection of the present invention.

Claims

1. A forklift cylinder head packing apparatus comprising: The utility model relates to a packing machine, which comprises a frame (1) vertically fixedly installed on the ground, a rotating platform (2) horizontally installed on the frame (1), an upper conveying belt (3) installed in front of the rotating platform (2) for conveying articles to be packed onto the rotating platform (2), a lower conveying belt (4) installed on the left side of the rotating platform (2) for conveying the packed articles away from the rotating platform (2), an unloading device (5) installed on the right side of the rotating platform (2) for moving the packed articles from the rotating platform (2) to the lower conveying belt (4), a film clamp (6) installed on the rotating platform (2) for connecting the film to the rotating platform (2), a film roll (7) made of the film for waterproof packing, a roll fixing platform (8) vertically slidably installed on the frame (1) for fixing the film roll (7), and a cutting device (9) pivotally installed on the side of the frame (1) for cutting the film after packing. The replacement device comprises a spare roll disc (10) pivotally installed on the top of the frame (1) for storing the film roll (7), a plurality of spare roll columns (11) vertically and downwardly fixedly and circumferentially distributed on the spare roll disc (10) for suspending the spare film roll (7), a clamp roll (12) fixedly and circumferentially distributed on the spare roll disc (10) for clamping the film in advance drawn from the spare film roll (7), two hooks (13) pivotally installed at the bottom of each spare roll column (11), a hollow installation column (14) pivotally installed on the roll fixing platform (8) for fixing the film roll (7), a push rod (16) slidably arranged on the roll fixing platform (8) for removing the used film roll from the installation column (14), a driving device (15) connected to the push rod (16) for driving the push rod (16) to move linearly, a clamping jaw (18) slidably arranged on the cutting device (9) for drawing the film, a driving device (17) connected to the clamping jaw (18) for driving the clamping jaw (18) to move linearly, and the cutting device (9) can vertically slide on the frame (1) like the roll fixing platform (8).

2. A cylinder head packing apparatus for a fork lift truck as defined in claim 1 wherein: The detection device comprises an infrared distance sensor (19) fixedly installed on the frame (1) for detecting the thickness change of the film roll (7).

3. A cylinder head packing apparatus for a fork lift truck as defined in claim 1 wherein: The material preparation disc (10) is provided with an alarm lamp (20), the rack (1) is provided with a pressure sensor (21) for detecting the remaining film roll (7) on the material preparation disc (10), and the pressure sensor (21) is electrically connected with the alarm lamp (20).

4. A cylinder head packing apparatus for a fork lift truck as defined in claim 1 wherein: The driving device two (17) is provided with an ultrasonic sensor (22) for detecting whether the clamping jaw (18) clamps the film during the material guiding process.

5. A fork lift cylinder head packing apparatus as defined in claim 1 wherein: The rack (1) is provided with a blowing port (23) on the position opposite to the installation column (14), and the blowing port (23) is electrically connected with the ultrasonic sensor (22).

6. A fork lift cylinder head packing apparatus as defined in claim 1 wherein: The roll fixing platform (8) is vertically rotatably provided with a compression roller one (24), a support (30) is swingably arranged beside the compression roller one (24), and the swing end of the support (30) is provided with a compression roller two (25).

7. A fork lift cylinder head packing apparatus as defined in claim 6 wherein: The compression roller one (24) and the compression roller two (25) are both provided with spiral grooves.

8. A fork lift cylinder head packing apparatus as defined in claim 1 wherein: Each of the material preparation columns (11) is provided with two circular grooves (26), each of the circular grooves (26) is slidably provided with a clamping block (27), and each of the clamping blocks (27) and the bottom of the circular groove (26) is provided with a spring (28).

9. A fork lift cylinder head packing apparatus as defined in claim 6 wherein: The support (30) is provided with a limiting rod (29) for preventing the film roll (7) from jumping during use.

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