Automatic packing machine for silica gel products

Abstract

This invention discloses an automatic packaging machine for silicone products, comprising a frame, a pretreatment mechanism, a conveying mechanism, a primary packaging mechanism, a secondary packaging mechanism, a film roller, a control mechanism, a folding mechanism, an edge-lifting mechanism, and a cutting mechanism. The conveyor belt of the conveying mechanism has channels on its surface. The control mechanism controls the adhesion or separation of the film material from the conveyor belt in stages using negative and positive pressure. The folding mechanism, in conjunction with the edge-lifting mechanism, guides the film edge to the primary packaging mechanism. The primary packaging mechanism uses an actively rotating clamping rod to wind the packaging film around the product's outer circumference. The secondary packaging mechanism is configured as an ultrasonic continuous sealing machine or a cold-sealing roller. This invention reduces the viscoelasticity of silicone products through refrigeration pretreatment, and combined with positive and negative pressure control, active folding and winding, and non-destructive sealing, achieves stable automatic packaging of soft silicone products with a high packaging yield, making it suitable for automated production lines for silicone products.

Description

Technical Field

[0001] This invention relates to the field of silicone product processing, and more particularly to an automatic packaging machine for silicone products. Background Technology

[0002] Silicone products, such as silicone mats, silicone seals, and silicone kitchenware, are widely used in industrial and consumer goods sectors due to their excellent resistance to high and low temperatures, flexibility, and resilience. After molding and vulcanization, these products typically require packaging for storage and transportation. The application of automated packaging equipment can effectively improve packaging efficiency and reduce labor costs.

[0003] Existing technologies have significant shortcomings when processing silicone products. First, silicone products are highly elastic and have a tendency to stick to surfaces, making them prone to adhering to conveyor belts or packaging films during transport, leading to positioning deviations. When using a passive tumbling film winding method, it is difficult for the product to roll stably, and the film material is prone to wrinkles or stacking, making it impossible to form a uniform number of winding layers.

[0004] Therefore, how to provide a fully automated packaging device that can achieve stable dispensing and seamless transition, taking into account the special physical characteristics of silicone products, is a technical problem that needs to be solved in this field. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing an automatic packaging machine for silicone products, comprising: a frame, a pretreatment mechanism, a conveying mechanism, a primary packaging mechanism, a secondary packaging mechanism, a film roller, a guiding assembly, a control mechanism, a folding mechanism, an edge-curling mechanism, and a cutting mechanism. The frame is equipped with an unwinding station, a pretreatment station, a conveying station, a primary packaging station, and a secondary packaging station. The pretreatment mechanism is installed at the pretreatment station on the frame for pretreatment of the silicone products. The conveying mechanism is installed at the conveying station on the frame for conveying the silicone products. The primary packaging mechanism is installed at the primary packaging station on the frame for primary packaging of the silicone products. The secondary packaging mechanism is installed at the secondary packaging station on the frame for secondary packaging of the primary-packaged silicone products. The film roller is installed at the unwinding station on the frame, with its unwinding direction consistent with the conveying direction of the silicone products. The guide assembly is installed between the film roller and the conveyor belt; the control mechanism is installed on the frame and located below the conveyor belt to control the adhesion between the packaging film and the conveyor belt; the folding mechanism is installed on the conveyor station of the frame; the edge-curling mechanism is located between the conveyor end of the conveyor belt and the primary packaging mechanism; the cutting mechanism is used to cut the packaging film so that the silicone product is removed from the conveyor mechanism; when this technical solution is applied to the silicone product packaging production line, a process of first applying film for primary packaging, and then sealing or post-packaging is adopted. The silicone product is pre-treated by the pre-treatment mechanism. The purpose of the pre-treatment is mainly to reduce its surface viscosity and elasticity to prevent inconvenience in packaging. The pre-treated silicone product, along with the unwound packaging film, is conveyed by the conveyor mechanism to the primary packaging mechanism for primary packaging. Then, the packaging film is cut by the cutting mechanism and sent to the post-packaging mechanism at the post-packaging station for the final sealing and packaging process.

[0006] The conveying mechanism includes a servo motor-driven conveyor belt with perforations on its surface. These perforations prevent the packaging film from adhering to the conveyor belt due to static electricity and surface tension, and also increase the coefficient of friction on the conveyor belt surface to prevent slippage. The primary packaging mechanism includes a rotating component and a clamping component. The clamping component includes at least two sets of clamping rods, which are slidably mounted on the surface of the rotating component. The two sets of clamping rods on the same clamping component are arranged opposite to each other and slide in opposite directions. It should be noted that the primary packaging mechanism uses a winding method to initially package the silicone product; that is, when the rotating component drives the two sets of clamping rods to rotate, the clamping component can wind the packaging film to cover the silicone product.

[0007] To ensure stable winding operations, preferably, the number of primary packaging mechanisms is at least two sets, respectively located on opposite sides of the conveyor belt; the primary packaging mechanism also includes a drive motor, wherein the drive motor drives the rotating components to rotate, and the two sets of rotating components are linked together.

[0008] To achieve clamping of the packaging film and silicone product for winding and wrapping, the primary packaging mechanism preferably further includes a sliding drive component, wherein the sliding drive component includes an electric push rod or an electromagnetic drive device, which includes at least two sets of output ends with opposite directions of movement, and the output ends abut against the clamping rod to drive the clamping rod to slide.

[0009] Preferably, after the packaging film is unwound from the film roller, it is guided and conveyed to the top of the conveyor belt by the guide assembly. The guide assembly can relieve the surface tension of the packaging film to a certain extent, preventing it from stacking and wrinkling during the conveying process.

[0010] Preferably, in actual assembly, the control mechanism is located below the pretreatment mechanism. The control mechanism includes a housing, a negative pressure suction nozzle, a positive pressure nozzle, and a piping device. The piping device is installed inside the housing, and both the negative pressure suction nozzle and the positive pressure nozzle are located between the housing and the conveyor belt, and both are connected to the piping device. The negative pressure suction nozzle is installed on the side of the housing near the pretreatment station, and the positive pressure nozzle is installed on the side of the housing near the primary packaging station. Both the positive pressure nozzle and the negative pressure suction nozzle face the channel. The negative pressure suction nozzle creates negative pressure inside the channel through suction, allowing the packaging film to adhere tightly to the conveyor belt when passing through the pretreatment mechanism, thus ensuring a flat film when the silicone product lands on the packaging film. The positive pressure nozzle creates positive pressure inside the channel through air jetting, causing the packaging film to slightly curl up when passing overhead, facilitating subsequent winding and primary packaging. The piping device connects the positive pressure nozzle and the negative pressure suction nozzle, creating an airflow path between the three components, making efficient use of equipment space and the internal environment.

[0011] To prevent the negative pressure environment and the positive pressure environment from affecting and canceling each other out, thereby reducing the conveying efficiency, the control mechanism preferably includes an isolation device, which is disposed between the negative pressure nozzle and the positive pressure nozzle to isolate the positive pressure area of ​​the positive pressure nozzle and the negative pressure area of ​​the negative pressure nozzle.

[0012] Preferably, at least two sets of folding mechanisms are provided, respectively located on opposite sides of the conveyor belt, for cooperating in folding the sides of the packaging film; the folding mechanism includes a guide plate and a folding plate, the guide plate is provided with a ramp, and the ramp direction is from low to high along the conveying direction; the folding plate is located at the high point of the ramp of the guide plate and is hinged to the guide plate; it should be further described that an elastic element, including a torsion spring or a coil spring, is provided between the guide plate and the folding plate to reset the folding plate, which can quickly reset after the side of the packaging film is folded to prevent affecting the normal conveying of the packaging film; in the actual conveying process, the operation of the folding plate can be driven by a servo motor, and intermittent folding needs to be set at a fixed frequency.

[0013] To facilitate the initial packaging of silicone products by winding the packaging film, preferably, the edge-curling mechanism includes a guide plate and a limiting plate, both of which are mounted on the frame; the guide plate and the guide plate have the same structure, and there is a gap between the guide plate and the limiting plate to accommodate the folded packaging film.

[0014] Preferably, the pretreatment mechanism includes a feeding box, an adjuster, and a feeding plate assembly, wherein the feeding box is mounted on the frame, and the feeding plate assembly is mounted inside the feeding box; the feeding plate assembly includes a fixed plate and a movable plate, the fixed plate and the movable plate are arranged crosswise, and there is a channel for silicone product leakage between the fixed plate and the movable plate near the conveyor belt; the adjuster includes a motor-driven rotating shaft, and the rotating shaft is connected to the movable plate to drive the movable plate to swing; in actual operation, the silicone product is stored in the pretreatment mechanism before being placed on the conveyor belt, and falls onto the conveyor belt after the movable plate swings to expand the channel.

[0015] Preferably, the pretreatment mechanism further includes a refrigeration device with an exhaust vent facing the silicone product in the feeding box to cool the silicone product. In actual operation, the refrigeration device cools the silicone product, causing it to solidify at the molecular level, thus preventing the high viscosity and elasticity of the surface from affecting the product's transport and packaging.

[0016] Preferably, the cutting mechanism includes a driver and an execution tool, wherein the execution tool is positioned between the initial packaging station and the conveying station, with its cutting edge facing the packaging film on the conveyor belt; the output end of the driver abuts against the execution tool, driving the execution tool to move perpendicular to the packaging film; wherein the driver can be configured as a hydraulic cylinder or an electric actuator according to actual working requirements, and drives the execution tool to cut the packaging film.

[0017] Preferably, the post-packaging mechanism includes an ultrasonic continuous sealing machine or a cold sealing roll forming machine. After the initial winding and packaging film is cut, the silicone product will be conveyed into the post-packaging mechanism for final sealing and packaging.

[0018] It should be clarified that, in order to control the automated operation of this technical solution, the automatic packaging machine for silicone products of the present invention also includes a terminal controller for controlling various electrical components in the equipment.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] Firstly, addressing the issues of high elasticity and easy adhesion of silicone products, this technical solution uses a cooling device in the pretreatment mechanism to cool and solidify the product, reducing surface stickiness and elastic deformation. Combined with the negative pressure suction nozzles of the conveyor belt channels and the control mechanism, the membrane material is kept in close contact with the belt surface in the delivery area, ensuring accurate product placement and a flat membrane, effectively preventing deviation, wrinkles, or adhesion during transportation.

[0021] Secondly, addressing the issues of easy rebound and unstable passive rolling of film edges in flexible products, this technical solution uses a folding mechanism to intermittently fold the film edges, and a curling mechanism to form a guiding channel to stably guide the film edges into the primary packaging mechanism; an actively rotating clamping rod is used to clamp and controllably wind the film edges, achieving uniform wrapping and consistent shaping, suitable for automated winding packaging of elastic and irregularly shaped products.

[0022] Furthermore, to address the issues of easy loosening during post-winding and easy damage during heat sealing, the cutting mechanism vertically cuts the packaging film between the initial packaging station and the conveying station, achieving precise separation of the wound product from the film roll; the post-packaging mechanism uses ultrasonic or cold sealing methods to complete the final sealing, avoiding burns or deformation of the silicone product due to high temperatures, and ensuring the integrity of the packaging and the appearance of the product.

[0023] In addition, through the rational layout of each workstation and the integrated design of positive and negative pressure pipelines, this invention realizes fully automated continuous operation from material supply, pretreatment, conveying, winding, cutting to final packaging. It has a compact structure, rapid response, significantly improves packaging efficiency, reduces manual intervention, and effectively improves the stable packaging yield. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the accompanying drawings are only some embodiments of the present invention. For those skilled in the art, other embodiments and their accompanying drawings can be obtained based on the embodiments shown in these drawings without creative effort.

[0025] Figure 1 This is an assembly structure diagram of an automatic packaging machine for silicone products according to the present invention;

[0026] Figure 2 for Figure 1 A partial view of section A;

[0027] Figure 3 for Figure 1 A partial view of section B;

[0028] Figure 4 for Figure 1 Internal sectional view;

[0029] Figure 5 for Figure 4 A partial view of section C;

[0030] Figure 6 for Figure 4 A partial view of section D;

[0031] Figure 7for Figure 4 A partial view of section E in the middle.

[0032] In the diagram: 1. Frame; 2. Pre-treatment mechanism; 21. Feeding box; 22. Fixed plate; 23. Movable plate; 24. Refrigeration device; 25. Exhaust vent; 3. Conveying mechanism; 31. Conveyor belt; 311. Channel; 4. Primary packaging mechanism; 41. Rotating component; 42. Clamping rod; 5. Rear packaging mechanism; 6. Film roller; 7. Guide assembly; 8. Control mechanism; 81. Box body; 82. Negative pressure nozzle; 83. Positive pressure nozzle; 84. Piping device; 85. Isolation device; 9. Folding mechanism; 91. Guide plate; 92. Folding plate; 10. Edge lifting mechanism; 101. Guide plate; 102. Limiting plate; 11. Cutting mechanism; 111. Driver; 112. Execution tool. Detailed Implementation

[0033] The technical solutions of various embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments described in the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] An embodiment of the present invention provides an automatic packaging machine for silicone products, comprising: a frame 1, a pretreatment mechanism 2, a conveying mechanism 3, a primary packaging mechanism 4, a secondary packaging mechanism 5, a film roller 6, a guide assembly 7, an adjustment mechanism 8, a folding mechanism 9, an edge-curling mechanism 10, and a cutting mechanism 11. The frame 1 is provided with an unwinding station, a pretreatment station, a conveying station, a primary packaging station, and a secondary packaging station. The pretreatment mechanism 2 is installed at the pretreatment station of the frame 1 for pretreatment of the silicone products. The conveying mechanism 3 is installed at the conveying station of the frame 1 for conveying the silicone products. The primary packaging mechanism 4 is installed at the primary packaging station of the frame 1 for primary packaging of the silicone products. The secondary packaging mechanism 5 is installed at the secondary packaging station of the frame 1 for secondary packaging of the primary-packaged silicone products. The film roller 6 is installed at the unwinding station of the frame 1, and its unwinding direction is consistent with the conveying direction of the silicone products. The guide assembly 7 is installed with... Between the film roller 6 and the conveyor belt 31; the control mechanism 8 is installed on the frame 1 and located below the conveyor belt 31 to control the adhesion between the packaging film and the conveyor belt 31; the folding mechanism 9 is installed on the conveying station of the frame 1; the edge-curling mechanism 10 is located between the conveying end of the conveyor belt 31 and the primary packaging mechanism 4; the cutting mechanism 11 is used to cut the packaging film so that the silicone product is separated from the conveyor mechanism 3; when this technical solution is applied to the silicone product packaging production line, the process of first applying film for primary packaging, and then sealing or post-packaging is adopted. The silicone product is pre-treated by the pre-treatment mechanism 2. The purpose of the pre-treatment is mainly to reduce its surface viscosity and elasticity to prevent inconvenience in packaging. The pre-treated silicone product, together with the unwound packaging film, is conveyed by the conveyor mechanism 3 to the primary packaging mechanism 4 for primary packaging. Then, the packaging film is cut by the cutting mechanism 11 and sent to the post-packaging mechanism 5 at the post-packaging station for the final sealing and packaging process.

[0035] The conveying mechanism 3 includes a servo motor-driven conveyor belt 31, the surface of which is provided with channels 311. The channels 311 on the surface of the conveyor belt 31 can prevent the packaging film from adhering to the conveyor belt 31 due to static electricity and surface tension, and can also increase the friction coefficient of the conveyor belt 31 surface to prevent slippage. The primary packaging mechanism 4 includes a rotating component 41 and a clamping component, wherein the clamping component includes at least two sets of clamping rods 42, and the clamping rods 42 are slidably mounted on the surface of the rotating component 41. The two sets of clamping rods 42 on the same clamping component are arranged opposite to each other and slide in opposite directions. It should be noted that the primary packaging mechanism 4 uses a winding method to perform the initial packaging of silicone products, that is, when the rotating component 41 drives the two sets of clamping rods 42 to rotate, the clamping component can wind the packaging film to cover the silicone product.

[0036] To ensure stable winding operations, preferably, the number of primary packaging mechanisms 4 is at least two sets, respectively located on opposite sides of the conveyor belt 31; the primary packaging mechanism 4 also includes a drive motor, wherein the drive motor drives the rotating component 41 to rotate, and the two sets of rotating components 41 are linked together.

[0037] In order to clamp the packaging film and silicone product for winding and wrapping, the primary packaging mechanism 4 preferably further includes a sliding drive, wherein the sliding drive includes an electric push rod or an electromagnetic drive device, which includes at least two sets of output ends with opposite directions of movement, and the output ends abut against the clamping rod 42 to drive the clamping rod 42 to slide.

[0038] Preferably, after the packaging film of the film roller 6 is unwound, it is guided by the guide component 7 to be conveyed above the conveyor belt 31. The guide component 7 can relieve the surface tension of the packaging film to a certain extent and prevent it from stacking and wrinkling during the conveying process.

[0039] Preferably, in actual assembly, the control mechanism 8 is located below the pretreatment mechanism 2. The control mechanism 8 includes a housing 81, a negative pressure suction nozzle 82, a positive pressure nozzle 83, and a pipeline device 84. The pipeline device 84 is installed inside the housing 81. Both the negative pressure suction nozzle 82 and the positive pressure nozzle 83 are located between the housing 81 and the conveyor belt 31, and both the negative pressure suction nozzle 82 and the positive pressure nozzle 83 are connected to the pipeline device 84. The negative pressure suction nozzle 82 is installed on the side of the housing 81 near the pretreatment station, and the positive pressure nozzle 83 is installed on the side of the housing 81 near the initial packaging station. The positive pressure nozzle 83 and the negative pressure suction nozzle 84 are connected to the conveyor belt 31. All nozzles 82 are directly facing the channel 311; the negative pressure suction nozzle 82 creates negative pressure inside the channel 311 through suction, so that the packaging film can stick tightly to the conveyor belt 31 when passing through the pretreatment mechanism 2, thus making the silicone product flat when it falls onto the packaging film. The positive pressure nozzle 83 creates positive pressure inside the channel 311 through air jet, so that the packaging film is slightly lifted when passing over it, which is convenient for subsequent winding and initial packaging. The pipeline device 84 connects the positive pressure nozzle 83 and the negative pressure suction nozzle 82, so that an airflow passage is formed inside the three, making reasonable use of the equipment space and internal environment.

[0040] To prevent the negative pressure environment and the positive pressure environment from affecting and canceling each other out, thereby reducing the conveying efficiency, the control mechanism 8 preferably includes an isolation device 85, which is disposed between the negative pressure nozzle 82 and the positive pressure nozzle 83 to isolate the positive pressure area of ​​the positive pressure nozzle 83 and the negative pressure area of ​​the negative pressure nozzle 82.

[0041] Preferably, at least two sets of folding mechanisms 9 are provided, respectively located on opposite sides of the conveyor belt 31, for cooperating in folding the sides of the packaging film. The folding mechanism 9 includes a guide plate 91 and a folding plate 92. The guide plate 91 is provided with a ramp, and the ramp direction is from low to high along the conveying direction. The folding plate 92 is located at the high point of the ramp of the guide plate 91 and is hinged to the guide plate 91. It should be further described that an elastic element, including a torsion spring or a coil spring, is provided between the guide plate 91 and the folding plate 92 to reset the folding plate 92, which can quickly reset after the sides of the packaging film are folded to prevent affecting the normal conveying of the packaging film. In the actual conveying process, the operation of the folding plate 92 can be driven by a servo motor, and intermittent folding needs to be set at a fixed frequency.

[0042] To facilitate the initial packaging of silicone products by winding the packaging film, preferably, the edge-curling mechanism 10 includes a guide plate 101 and a limiting plate 102, both of which are mounted on the frame 1; the guide plate 101 has the same structure as the guide plate 91, and there is a gap between the guide plate 101 and the limiting plate 102 to accommodate the folded packaging film.

[0043] Preferably, the pretreatment mechanism 2 includes a feeding box 21, an regulator, and a feeding plate assembly. The feeding box 21 is mounted on the frame 1, and the feeding plate assembly is mounted inside the feeding box 21. The feeding plate assembly includes a fixed plate 22 and a movable plate 23. The fixed plate 22 and the movable plate 23 are arranged crosswise, and there is a channel for silicone product leakage between the fixed plate 22 near the conveyor belt 31 and the movable plate 23. The regulator includes a motor-driven rotating shaft, and the rotating shaft is connected to the movable plate 23 to drive the movable plate 23 to swing. In actual operation, the silicone product is stored in the pretreatment mechanism 2 before being placed on the conveyor belt 31, and falls onto the conveyor belt 31 after the movable plate 23 swings to expand the channel.

[0044] Preferably, the pretreatment mechanism 2 further includes a cooling device 24, which is provided with an exhaust port 25. The exhaust port 25 is directly facing the silicone product in the feeding box 21 and is used to cool the silicone product. In actual operation, the cooling device 24 can cool the silicone product so that it can solidify at the molecular structure level, avoiding the high viscosity and high elasticity of the surface from affecting the product's transportation and packaging.

[0045] Preferably, the cutting mechanism 11 includes a driver 111 and an execution cutter 112, wherein the execution cutter 112 is disposed between the initial packaging station and the conveying station, and its cutting edge faces the packaging film on the conveyor belt 31; the output end of the driver 111 abuts against the execution cutter 112, driving the execution cutter 112 to move perpendicular to the packaging film; wherein the driver 111 can be configured as a hydraulic cylinder or an electric push rod according to actual working requirements, and drives the execution cutter 112 to cut the packaging film.

[0046] Preferably, the post-packaging mechanism 5 includes an ultrasonic continuous sealing machine or a cold sealing roll press. After the initial winding packaging and the separation of the packaging film are completed, the silicone product will be fed into the post-packaging mechanism 5 through the conveying mechanism 3 for final sealing and packaging.

[0047] It should be clarified that, in order to control the automated operation of this technical solution, the automatic packaging machine for silicone products of the present invention also includes a terminal controller for controlling various electrical components in the equipment.

[0048] like Figures 1 to 7 As shown in the figure, this embodiment provides an automatic packaging machine for silicone products. Its structure, as described in the specific implementation, includes a frame 1, a pre-treatment mechanism 2, a conveying mechanism 3, a primary packaging mechanism 4, a secondary packaging mechanism 5, a film roller 6, a guiding assembly 7, a control mechanism 8, a folding mechanism 9, an edge-curling mechanism 10, and a cutting mechanism 11. All of the above mechanisms are centrally controlled by a terminal controller to achieve fully automatic continuous packaging operations. The terminal controller is typically a PLC (Programmable Logic Controller). The specific workflow and control method are as follows:

[0049] Standby and initialization states

[0050] Before the equipment is started, the terminal controller performs a self-check to confirm that the signals of each sensor are normal, the air source pressure is stable, and the cooling device 24 has reached the preset temperature. After the packaging film on the film roller 6 is flattened by the guide component 7, it covers the surface of the conveyor belt 31. The terminal controller activates the negative pressure suction nozzle 82 in the control mechanism 8 to form a negative pressure in the channel 311 of the conveyor belt 31, adsorbing the packaging film onto the surface of the conveyor belt 31 to ensure that the film is flat.

[0051] Pretreatment and delivery process

[0052] The terminal controller sends a start signal to the pre-processing unit 2; the silicone product in the feeding box 21 cools down under the action of the cold air from the refrigeration unit 24, reducing surface stickiness and elasticity, and becoming brittle, which facilitates subsequent separation and positioning; the regulator drives the rotating shaft to swing the movable plate 23, expanding the leakage channel between it and the fixed plate 22, and the single silicone product falls onto the packaging film surface on the conveyor belt 31 under the action of gravity; at this time, the negative pressure suction nozzle 82 continues to work to ensure that the film surface is flat, the product is accurately positioned, and there is no deviation or bouncing; through the cooling pre-treatment, the problem of inaccurate placement caused by the high elasticity and surface adhesion of the silicone product is solved, laying the foundation for subsequent packaging.

[0053] Conveying and membrane conditioning processes

[0054] The terminal controller starts the servo motor of the conveyor mechanism 3, driving the conveyor belt 31 to move forward and transport the silicone product. During the transport process, the negative pressure suction nozzle 82 in the control mechanism 8 works continuously, ensuring that the packaging film remains in close contact with the conveyor belt 31 from the pre-treatment station to the initial packaging station, preventing the film from shifting due to vibration or airflow. When the product is transported close to the initial packaging station, the terminal controller closes the negative pressure suction nozzle 82 and simultaneously opens the positive pressure nozzle 83. The positive pressure airflow blows upward through the channel 311, causing the edges of the packaging film to curl slightly, creating conditions for subsequent folding and winding. The isolation device 85 effectively separates the positive pressure area and the negative pressure area, preventing air pressure interference. Through segmented control of positive and negative pressure, the attitude of the film material during the transport process is controllable—the front section is adsorbed and stabilized, while the rear section curls up to aid winding, solving the problems of wrinkles and stacking caused by uneven tension or static electricity.

[0055] Film edge folding and guiding process

[0056] When the silicone product enters the working area of ​​the folding mechanism 9 along the conveyor belt 31, the terminal controller sends an intermittent action command to the folding mechanism 9; the ramp on the guide plate 91 gradually raises the side of the packaging film, and then the folding plate 92 flips inward under the drive of the servo motor, folding the film edge upward to form a U-shaped groove; after the folding is completed, the elastic element makes the folding plate 92 quickly return to its original position to avoid affecting subsequent conveying; the folded film edge enters the guide channel between the guide plate 101 and the limit plate 102 of the edge-lifting mechanism 10, maintaining an upright posture and moving forward stably until it enters the clamping range of the primary packaging mechanism 4; through the coordinated action of the folding mechanism 9 and the edge-lifting mechanism 10, the technical problem of the soft product film edge being prone to rebound and unable to stably enter the winding station is solved, ensuring that the film edge is always in a clamping state.

[0057] Active winding primary packaging process

[0058] After the terminal controller detects that the product has arrived at the clamping station of the primary packaging mechanism 4, it sends a command to start the sliding drive component, which drives the two sets of clamping rods 42 on the same clamping component to slide towards each other, clamping the folded packaging film edges from both sides; then, the terminal controller starts the drive motor, which drives the rotating component 41 to rotate, and at the same time drives the clamping rods 42 to rotate around the outer circumference of the product, so that the packaging film is evenly wound around the surface of the silicone product; the number of winding turns is fed back in real time by the encoder, and the terminal controller precisely controls the motor to stop according to the preset value;

[0059] In this embodiment, the initial packaging mechanism 4 is set into two groups, located on opposite sides of the conveyor belt 31. The two groups of rotating parts 41 are driven by the same drive motor through a linkage mechanism to rotate synchronously, ensuring that the product is subjected to uniform force on both sides. By actively rotating and winding instead of the traditional passive rolling, the number of winding turns can be controlled and the wrapping is uniform, which is suitable for the automated packaging of elastic irregular-shaped products and solves the problem of unstable passive winding.

[0060] Cutting and separating process

[0061] After winding is completed, the terminal controller sends a cutting command to the cutting mechanism 11; the driver 111 pushes the execution cutter 112 to move vertically downward, and the cutting edge precisely cuts the packaging film located between the initial packaging station and the conveying station; after cutting is completed, the execution cutter 112 resets, and the wound product is separated from the film roll; vertical cutting achieves precise separation of the wound product and the film roll, avoids film layer misalignment caused by pulling, and provides a complete roll form for subsequent transitions.

[0062] Transition and final packaging processes

[0063] The cut roll film continues to move forward with the conveyor belt 31, enters the transition chute through the discharge port, and slides into the feed end of the rear packaging mechanism 5 under the action of gravity. The rear packaging mechanism 5 is an ultrasonic continuous sealing machine. The terminal controller starts the ultrasonic generator to seal the end of the roll film, completing the final packaging. The packaged finished product falls into the finished product box. The ultrasonic cold sealing method is used to avoid the high temperature heat sealing from causing burns or deformation to the silicone product, ensuring the integrity of the packaging and the appearance of the product.

[0064] Loop and Reset

[0065] After a single product is packaged, the terminal controller resets all actuators, namely, the clamping rod 42 is reset, the folding plate 92 is reset, the positive pressure nozzle 83 is closed, and the negative pressure suction nozzle 82 is reopened, thus entering the next work cycle and realizing continuous automatic packaging.

[0066] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects. The scope of the invention is defined by the appended claims, not by the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0067] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic packing machine for silica gel products, characterized by, include: The frame (1) is provided with an unwinding station, a pre-treatment station, a conveying station, a primary packaging station and a post-packaging station; The pretreatment unit (2) is installed at the pretreatment station of the frame (1) to pretreat the silicone products; The conveying mechanism (3) is installed on the conveying station of the frame (1) to convey silicone products; The primary packaging mechanism (4) is installed at the primary packaging station of the frame (1) to perform primary packaging of silicone products; The post-packaging mechanism (5) is installed at the post-packaging station of the frame (1) to repackage the silicone products after the initial packaging. The film roller (6) is installed on the unwinding station of the frame (1), and its unwinding direction is consistent with the conveying direction of the silicone product; A folding mechanism (9) is installed on the conveying station of the frame (1); the folding mechanism (9) is configured in at least two sets, respectively set on opposite sides of the conveyor belt (31), for cooperating to fold the sides of the packaging film; the folding mechanism (9) includes a guide plate (91) and a folding plate (92), the guide plate (91) is provided with a ramp, and the ramp direction along the conveying direction is from low to high; the folding plate (92) is set at the high point of the ramp of the guide plate (91) and is hinged to the guide plate (91); The edge-curling mechanism (10) is located between the conveyor end of the conveyor belt (31) and the primary packaging mechanism (4); the edge-curling mechanism (10) includes a guide plate (101) and a limiting plate (102), both of which are mounted on the frame (1); the guide plate (101) has the same structure as the guide plate (91), and there is a gap between the guide plate (101) and the limiting plate (102) to accommodate the folded packaging film; The conveying mechanism (3) includes a servo motor driven conveyor belt (31), wherein the surface of the conveyor belt (31) is provided with channels (311); the primary packaging mechanism (4) includes a rotating component (41) and a clamping component, wherein the clamping component includes at least two sets of clamping rods (42), and the clamping rods (42) are slidably mounted on the surface of the rotating component (41), and the two sets of clamping rods (42) on the same clamping component are arranged opposite to each other and slide in opposite directions; When the silicone product enters the working area of ​​the folding mechanism 9, the ramp on the guide plate (91) raises the side of the packaging film, and the folding plate (92) flips inward to fold the film edge upward to form a U-shaped groove. The folded film edge enters the guide channel between the guide plate (101) and the limiting plate (102) of the edge-lifting mechanism (10), moves forward in an upright posture, and enters the clamping range of the primary packaging mechanism (4). The folding mechanism (9) and the edge-lifting mechanism (10) work together to make the film edge in a clamping state.

2. The automatic packing machine for silica gel products according to claim 1, characterized in that: The number of the primary packaging mechanism (4) is at least two sets, which are respectively set on opposite sides of the conveyor belt (31); the primary packaging mechanism (4) also includes a drive motor, wherein the drive motor drives the rotating component (41) to rotate, and the two sets of rotating components (41) are linked together. The primary packaging mechanism (4) further includes a sliding drive component, which includes an electric push rod or an electromagnetic drive device, and includes at least two sets of output ends with opposite directions of movement. The output ends abut against the clamping rod (42) to drive the clamping rod (42) to slide.

3. The automatic packing machine for silica gel products according to claim 1, characterized in that, It also includes a guide assembly (7), which is installed between the film roller (6) and the conveyor belt (31); after the packaging film of the film roller (6) is unwound, it is guided and transmitted to the top of the conveyor belt (31) by the guide assembly (7).

4. The automatic packing machine for silica gel products according to claim 1, characterized in that: It also includes a control mechanism (8), which is installed on the frame (1) and located below the conveyor belt (31) to control the adhesion between the packaging film and the conveyor belt (31); the control mechanism (8) includes a box (81), a negative pressure nozzle (82), a positive pressure nozzle (83) and a pipeline device (84), wherein the pipeline device (84) is installed inside the box (81), the negative pressure nozzle (82) and the positive pressure nozzle (83) are both located between the box (81) and the conveyor belt (31), and the negative pressure nozzle (82) and the positive pressure nozzle (83) are both connected to the pipeline device (84); the negative pressure nozzle (82) is installed on the side of the box (81) near the pretreatment station, and the positive pressure nozzle (83) is installed on the side of the box (81) near the primary packaging station; the positive pressure nozzle (83) and the negative pressure nozzle (82) are both facing the channel (311). The control mechanism (8) also includes an isolation device (85) disposed between the negative pressure nozzle (82) and the positive pressure nozzle (83) to isolate the positive pressure area of ​​the positive pressure nozzle (83) and the negative pressure area of ​​the negative pressure nozzle (82).

5. The automatic packing machine for silica gel products according to claim 1, characterized in that: The pretreatment mechanism (2) includes a feeding box (21), an regulator, and a feeding plate assembly. The feeding box (21) is installed on the frame (1), and the feeding plate assembly is installed inside the feeding box (21). The feeding plate assembly includes a fixed plate (22) and a movable plate (23). The fixed plate (22) and the movable plate (23) are arranged crosswise, and there is a channel for silicone product leakage between the fixed plate (22) near the conveyor belt (31) and the movable plate (23). The regulator includes a motor-driven rotating shaft, and the rotating shaft is connected to the movable plate (23) to drive the movable plate (23) to swing. The pretreatment mechanism (2) also includes a refrigeration device (24), which is provided with an exhaust port (25). The exhaust port (25) is directly facing the silicone product in the feed box (21) and is used to cool the silicone product.

6. The automatic packing machine for silica gel products according to claim 1, characterized in that: It also includes a cutting mechanism (11), which includes a driver (111) and an execution tool (112), wherein the execution tool (112) is located between the initial packaging station and the conveying station, and its cutting edge faces the packaging film on the conveyor belt (31); the output end of the driver (111) abuts against the execution tool (112) and drives the execution tool (112) to move perpendicular to the packaging film.

7. The automatic packing machine for silica gel products according to claim 1, characterized in that: The post-packaging mechanism (5) is an ultrasonic continuous sealing machine or a cold sealing rolling machine.

Images