A heat-sealing cutter device that cools down quickly

Abstract

This utility model discloses a timely cooling heat-sealing cutter device, belonging to the field of cutter devices. The device includes a frame, a conveying device, a film storage mechanism, a film feeding and guiding mechanism, a heat-sealing mechanism, a positioning mechanism, a driving device, and an intelligent control device. The guide rollers of the film feeding and guiding mechanism can be adjusted in height on the frame to accommodate different heat-sealed packaging objects. The heat-sealing mechanism drives the sealing and cutting blade upwards and the telescopic rod downwards via a cylinder, aligning the operating end of the sealing and cutting blade with a soft buffer platform. The electric heating wire in the sealing and cutting blade heats and melts the two layers of film before cutting. Immediately after cutting, low-temperature cold air is blown in through an air vent. The rollers on the buffer platform can straighten the film roll, reducing layering and wrinkles. The sealing and cutting blade is equipped with a heat insulation device and a temperature sensor to prevent burns and premature melting of the film roll. The positioning mechanism and driving device work together to achieve efficient heat sealing, and the bonded areas of the film roll are less prone to cracking after heat sealing, resulting in a high yield.

Description

Technical Field

[0001] This utility model relates to a cutting device, specifically a heat-sealing cutting device that can be cooled in a timely manner. Background Technology

[0002] In the packaging industry, heat sealing equipment plays a crucial role, achieving a tight seal to effectively protect products from external environmental influences and ensure product quality and shelf life. The heat sealing blade, as a key component of the heat sealing equipment, directly determines the effectiveness and quality of the heat sealing process. Currently, the film cutting components of strapping and heat-sealing packaging equipment mainly fall into two types: scissor-type mechanical cutter structures and heat-melt structures.

[0003] The scissor-type mechanical cutter structure relies on the relative movement of two blades to cut the packaging film. However, this structure has a relatively narrow application range, only suitable for cutting brittle films made of BOF material. Furthermore, it places extremely stringent requirements on the cutter; the two blades must not only have a small gap and remain sharp, but the gap must also be consistent across the entire width of the film; otherwise, it will be difficult to cut the film. Once the cutter wears down or the gap becomes uneven, it will lead to cutting failure, affecting packaging efficiency and quality.

[0004] The heat-sealing structure uses high-temperature electrothermal cutting to cut the packaging film. Compared to scissor-type mechanical cutters, it has a wider range of applications, suitable for both flexible and brittle films. However, currently available heat-sealing cutters generally suffer from the problem of partially failing to cut through adhesions. At high packaging speeds, the sealing line is also prone to cracking. This not only affects the packaging's airtightness and reduces the product's protective effect but may also lead to product leakage, spoilage, and other problems, causing economic losses to manufacturers.

[0005] CN112407458A discloses a heat-sealing apparatus comprising a heatable sealing roller and a mating roller, the mating roller having a forming section for receiving a product to be surrounded between diaphragm strips. A roller gap is formed between the areas of the sealing roller and the mating roller surrounding the forming section. Diaphragm strips can be fed into the roller gap in an overlapping manner so that the diaphragm strips are welded together at the heat-sealing site. A device for generating sealing pressure in the roller gap is arranged between the sealing roller and the mating roller. The sealing pressure and temperature of the sealing roller can be adjusted by means of an adjusting device. The heat-sealing apparatus includes a measuring device for non-contactly detecting a measurement signal for the thickness dimension of the layer assembly formed from the diaphragm strips.

[0006] CN116408965A discloses a heat-sealing device for adhesive block lamination, relating to the technical field of lamination equipment. The adhesive block heat-sealing device includes a frame; two sets of unwinding devices, vertically distributed on the frame, for rolling and supporting the film roll; two sets of anti-inertia feeding devices, vertically distributed on the frame, for braking the unwinding devices and recovering excess film released by the film roll due to inertia; a feeding conveyor located between the two sets of unwinding devices, for aligning and conveying the adhesive block to the lamination station; a lamination conveyor located at the lamination station, during which the adhesive block undergoes lamination; and a heat-sealing device for heat-sealing and cutting the laminated adhesive block.

[0007] Existing heat-sealing equipment still uses a combination of heat fusion and cutting to package the products. However, all of these devices have a problem: the sealing and cutting buffer platform is too hard. This causes some parts of the film to not be cut when encountering uneven packaging film during the heat sealing and cutting process. Or, when the speed is high, the sealing and cutting blade opens too quickly, and the film temperature at the sealed and cut point has not dropped. The cut is still in a softened state. When the pressure from the package is released, it will rebound, causing the heat-sealed but not yet cooled and fixed cut to tear open, resulting in partial or complete cracking of the heat-fused seal. Utility Model Content

[0008] To address the above problems, this utility model provides a timely cooling heat-sealing cutter device. By adding an air vent to the heat-sealing mechanism and setting rollers and a soft material buffer on the buffer platform, the heat-sealing cutter is cooled in time, and the film roll is stretched, making the cut more thorough and avoiding problems such as adhesion, incomplete cutting, and cracking after heat sealing.

[0009] This utility model provides a timely cooling heat-sealing cutter device, which includes a frame, a conveying device, a film storage mechanism, a film feeding and guiding mechanism, a heat-sealing mechanism, a positioning mechanism, a driving device, and an intelligent control device according to the product transportation direction;

[0010] The frame has a square structure, and the conveying device, the film storage mechanism, the film feeding and guiding mechanism, the heat sealing mechanism and the positioning mechanism are all installed on the frame;

[0011] The heat sealing mechanism includes a buffer platform and a sealing cutter from top to bottom;

[0012] Rollers are symmetrically arranged on the buffer platform for stretching and fixing the roll film;

[0013] The sealing and cutting blade is equipped with an electric heating wire;

[0014] The sealing and cutting knife is equipped with an air blowing port, which is connected to a cooling solenoid valve to control the air blowing port to blow out cold air at any time.

[0015] Furthermore, the heat sealing mechanism further includes a sealing and cutting cylinder and a sealing and cutting support under the sealing and cutting blade.

[0016] Furthermore, the drive device is connected to the conveying device, the film storage mechanism, the film delivery guide mechanism, the heat sealing mechanism, and the positioning mechanism, respectively.

[0017] Furthermore, the left and right ends of the frame are open structures, used for conveying unpackaged products and packaged products, respectively.

[0018] Furthermore, the conveying device is horizontally installed in the middle of the frame, dividing the frame vertically. The product moves horizontally on the conveying device to complete the heat sealing and conveying.

[0019] Furthermore, the conveying device includes a feed belt and a take-up belt from left to right.

[0020] Furthermore, the first and last ends of the conveying device are flush with or protrude from the left and right ends of the frame, for the purpose of product delivery and collection.

[0021] Furthermore, the sealing and cutting blade is located between the feeding belt and the receiving belt, and the distance between the sealing and cutting blade and the feeding belt and the receiving belt is <10mm.

[0022] Furthermore, the feeding belt and the take-up belt have the same conveying direction, and the feeding belt and the take-up belt have the same width.

[0023] Furthermore, both the feeding belt and the take-up belt are conveyor belt structures, with drive shafts at both ends. One side of each drive shaft is connected to the drive device to drive the feeding belt and the take-up belt to horizontally transport the products.

[0024] Furthermore, the membrane storage mechanism is rotatably mounted on the side walls of both sides of the frame via a drive shaft.

[0025] Furthermore, one side of the drive shaft of the film storage mechanism is connected to the drive device to drive the film storage mechanism to transport the film roll.

[0026] Furthermore, the membrane storage mechanism includes an upper membrane and a lower membrane, which are symmetrically installed above and below the frame, respectively, and are symmetrically arranged with respect to the conveying device.

[0027] Furthermore, the upper reservoir membrane and the lower reservoir membrane have the same axial length.

[0028] Furthermore, both the upper and lower storage membranes are equipped with roll film.

[0029] Furthermore, the film feeding guide mechanism is rotatably mounted on the side walls of both sides of the frame via a drive shaft.

[0030] Furthermore, one side of the drive shaft of the film feeding guide mechanism is connected to the drive device to drive the film feeding guide mechanism to convey the roll film.

[0031] Furthermore, the conveying device, the film storage mechanism, and the film delivery guiding mechanism are all connected to the driving device on the same side.

[0032] Furthermore, the film feeding and guiding mechanism includes an upper guide roller and a lower guide roller, and the upper guide roller and the lower guide roller each include at least three guide rollers.

[0033] Furthermore, the upper guide roller and the lower guide roller have the same axial length, and are also the same as the axial length of the upper storage film and the lower storage film.

[0034] Furthermore, the upper guide roller and the lower guide roller are arranged on the same side of the feed belt in the frame.

[0035] Furthermore, the upper guide roller includes a guide roller one, a tension roller one, and a drive roller one, and the lower guide roller includes a guide roller two, a tension roller two, and a drive roller two.

[0036] Furthermore, the first guide roller and the second guide roller are symmetrically installed with respect to the conveying device, and the first tension roller and the second tension roller are symmetrically installed with respect to the conveying device.

[0037] Furthermore, the edge tangents of the first drive roller and the second drive roller are on the same vertical line as the edge of the conveying direction of the feeding belt.

[0038] Furthermore, the vertical distance between the first drive roller and the feeding belt is the height of the conveyed product, and the second drive roller is set close to the lower edge of the feeding belt.

[0039] Furthermore, the height and horizontal distance of the first guide roller, the first tension roller, the first drive roller, the second guide roller, the second tension roller, and the second drive roller on the frame can all be adjusted to regulate the tension of the film roll.

[0040] Furthermore, the buffer platform includes a fixed rod and a telescopic rod.

[0041] Furthermore, the fixing rod is a hollow columnar structure, and its top end is detachably fixed to the frame by bolts.

[0042] Furthermore, the telescopic rod is a columnar structure adapted to the fixed rod, and can be slidably inserted into the fixed rod. The fitting gap between the outer wall of the telescopic rod and the inner wall of the fixed rod is 0.1-0.3mm.

[0043] Furthermore, an actuating cylinder is installed inside the telescopic rod connected to the fixed rod. The actuating cylinder is connected to the driving device and is used to control the telescopic rod to move up and down inside the fixed rod.

[0044] Furthermore, the stroke distance of the actuating cylinder inside the telescopic rod is 50-200mm.

[0045] Furthermore, the tail end of the telescopic rod is opposite to the sealing and cutting blade, and a soft material buffer is embedded in the tail end of the telescopic rod. The soft material buffer has a semi-circular arc structure, with one side of its arc shape away from the sealing and cutting blade.

[0046] Furthermore, the soft material buffer has a depth of 1.5-2 mm and a length of 3.7-4 mm.

[0047] Furthermore, the soft material buffer is symmetrically provided with rollers on the left and right sides, and the rollers are rotatably mounted on the tail end of the telescopic rod. The central axis of the rollers is parallel to the central axis of the roll film.

[0048] Furthermore, the diameter of the roller is 2.5-3mm.

[0049] Furthermore, the heat sealing mechanism is located within the frame and has a vertical structure.

[0050] Furthermore, the sealing and cutting knife bracket is fixedly installed at the bottom of the frame by bolts, and the sealing and cutting knife actuation cylinder is fixedly installed between the sealing and cutting knife and the sealing and cutting knife bracket. The sealing and cutting knife actuation cylinder is used to adjust the height of the sealing and cutting knife.

[0051] Furthermore, the sealing and cutting blade is connected to the sealing and cutting blade actuation cylinder via quick-release bolts.

[0052] Furthermore, the sealing and cutting blade actuation cylinder is connected to the drive device.

[0053] Furthermore, the stroke distance of the sealing and cutting knife actuating cylinder is 50-200mm.

[0054] Furthermore, the sealing and cutting blade has a U-shaped mounting groove inside, and the electric heating wire is embedded in the U-shaped mounting groove and fixed by high-temperature resistant silicone material.

[0055] Furthermore, the length of the sealing and cutting blade is the same as the width of the feeding belt and the receiving belt (in the non-conveying direction).

[0056] Furthermore, the top of the sealing and cutting blade is provided with an operating end, and at least four air blowing ports are opened along the length of the sealing and cutting blade on the operating end. The air blowing ports are connected to an air duct, and a cooling solenoid valve is installed in the air duct.

[0057] Furthermore, the operating end has a pointed structure, and the air outlet is located on the pointed structure.

[0058] Furthermore, the spacing between the air outlets is 10-20mm, and the diameter of the air outlets is 0.4-1mm.

[0059] Furthermore, the air duct is connected to a scroll air cooler via a duct pipe, and a sealing ring is connected between the air duct and the duct pipe.

[0060] Furthermore, the positioning mechanism is installed on one side of the receiving belt, adjacent to the buffer platform.

[0061] Furthermore, the positioning mechanism includes a fixed column and a positioning rod, and a positioning seat is fixedly installed at the bottom end of the positioning rod.

[0062] Furthermore, the fixing column is a columnar structure, and its top end is detachably fixed to the frame by bolts.

[0063] Furthermore, the positioning rod is a columnar structure adapted to the fixed column, and can be slidably inserted into the fixed column. The fitting gap between the outer wall of the positioning rod and the inner wall of the fixed column is 0.1-0.3mm.

[0064] Furthermore, the positioning rod is connected to the fixed column and equipped with an actuating cylinder, which is connected to the driving device and used to control the positioning rod to move up and down within the fixed column.

[0065] Furthermore, the stroke distance of the actuating cylinder inside the positioning rod is 50-200mm.

[0066] Furthermore, an infrared sensor is installed on the positioning seat to detect when the product arrives at the positioning area, triggering the positioning cylinder to drive the positioning seat to move downwards to fix the product.

[0067] Furthermore, both the infrared sensor and the actuating cylinder inside the positioning rod are connected to the intelligent control device, which monitors and sends commands.

[0068] Furthermore, the conveying device, the film storage mechanism, the film feeding guide mechanism, the heat sealing mechanism, and the positioning mechanism are all connected to the intelligent control device, and the working parameters of the timely cooled heat sealing cutter device are adjusted through the intelligent control device.

[0069] Furthermore, the actuating cylinder inside the telescopic rod and the actuating cylinder of the sealing and cutting knife are both connected to the intelligent control device, which controls the telescopic rod to move downward while the sealing and cutting knife moves upward to clamp the roll film, and then cuts the roll film under the action of the electric heating wire inside the sealing and cutting knife.

[0070] Furthermore, temperature sensors are installed at both ends of the sealing and cutting blade in the radial direction. The temperature sensors are connected to the intelligent control device for precise temperature control of the sealing and cutting blade.

[0071] Furthermore, the vortex air cooler is connected to the intelligent control device.

[0072] The beneficial effects of this utility model are:

[0073] This invention solves the problems of adhesion and untimely cooling in existing technologies through the design of the heat-sealing mechanism. Combined with other structural components within the device, it heat-seales products efficiently with a high yield. Specifically, the guide rollers in this invention can be adjusted in height on the frame to adapt to different heat-sealing systems. Then, at the heat-sealing mechanism, the product is driven upwards by a cylinder, and the telescopic rod downwards, so that the operating end of the sealing cutter is opposite the soft buffer platform. The electric heating wire of the sealing cutter and the pointed structure of the operating end of the sealing cutter perform heat-melting and cutting of the two layers of film. Immediately after cutting, cold air is blown into the air outlet. The cold air is low in temperature and flows quickly, so it does not significantly affect the temperature of the cooling air as it passes through the air duct of the sealing cutter. After about 5 seconds of blowing, the product... The positioning rod can be reset to transport the packaged product. Due to the timely cooling during the above process, the bonding area of ​​the roll film is cooled quickly, and subsequent cracking is almost impossible. At the same time, the rollers on the buffer platform can transport and organize the roll film (during the transport process), reducing the stacking and wrinkling of the roll film during heat sealing. In addition, the sealing and cutting knife in this utility model is also equipped with a heat insulation device to avoid burns and melting of the roll film before heat sealing. It is also equipped with a temperature sensor to monitor the temperature in real time. All components such as the positioning mechanism and the drive device work together to improve the heat sealing efficiency. Attached Figure Description

[0074] Figure 1 This is a plan view of the timely cooling heat-sealing cutter device described in this utility model;

[0075] Figure 2 This is a schematic diagram of the coating of the timely cooling heat-sealing cutter device described in this utility model;

[0076] Figure 3 This is a schematic diagram of the sealing and cutting blade part in the heat sealing mechanism described in this utility model;

[0077] Figure 4 This is a side view of the sealing and cutting blade described in this utility model;

[0078] Figure 5 This is a front view of the sealing and cutting blade described in this utility model;

[0079] Figure 6 This is a side view of the buffer platform described in this utility model.

[0080] Figure 7 This is an enlarged structural schematic diagram of the buffer platform described in this utility model;

[0081] Figure 8 This is a schematic diagram of the heat sealing mechanism described in this utility model during heat sealing;

[0082] The names of the labels in the diagram are as follows: 1. Frame; 2. Conveying device; 3. Film storage mechanism; 4. Film feeding guide mechanism; 5. Heat sealing mechanism; 6. Positioning mechanism; 7. Drive device; 8. Intelligent control device; 21. Feeding belt; 22. Receiving belt; 31. Upper film storage; 32. Lower film storage; 41. Guide roller one; 42. Tensioning roller one; 43. Drive roller one; 44. Guide roller two; 45. Tensioning roller two; 46. Drive roller two; 51. Buffer platform; 52. Sealing and cutting knife; 53. Sealing and cutting knife actuation cylinder; 54. Sealing and cutting knife bracket; 511. Fixed rod; 512. Telescopic rod; 521. Electric heating wire; 522. Air outlet; 523. Cooling solenoid valve; 5121. Roller; 5122. Soft material buffer zone; 61. Fixed column; 62. Positioning rod; 63. Positioning seat. Detailed Implementation

[0083] The utility model will be described in detail below with reference to the embodiments:

[0084] This invention provides a timely cooling heat-sealing cutter device. By adding an air vent to the heat-sealing mechanism and setting rollers and a soft material buffer on the buffer platform, the heat-sealing cutter is cooled in time, and the film roll is stretched, making the cut more thorough and avoiding problems such as adhesion, incomplete cutting, and cracking after heat sealing.

[0085] Example 1

[0086] This embodiment provides a timely cooling heat-sealing cutter device, which includes a frame 1, a conveying device 2, a film storage mechanism 3, a film feeding and guiding mechanism 4, a heat-sealing mechanism 5, a positioning mechanism 6, a driving device 7, and an intelligent control device 8 according to the product transportation direction.

[0087] The frame 1 has a square structure, and the conveying device 2, the film storage mechanism 3, the film feeding guide mechanism 4, the heat sealing mechanism 5 and the positioning mechanism 6 are all installed on the frame 1;

[0088] The heat sealing mechanism 5 includes, from top to bottom, a buffer platform 51, a sealing and cutting blade 52, a sealing and cutting blade actuation cylinder 53, and a sealing and cutting blade support 54;

[0089] Rollers 5121 are symmetrically arranged on the buffer platform 51 for stretching and fixing the roll film;

[0090] The sealing and cutting blade 52 is equipped with an electric heating wire 521;

[0091] The sealing and cutting blade 52 is provided with an air blowing port 522, which is connected to a cooling solenoid valve 523 to control the air blowing port 522 to blow out cold air at any time.

[0092] In this embodiment, the driving device 7 is connected to the conveying device 2, the film storage mechanism 3, the film feeding guide mechanism 4, the heat sealing mechanism 5, and the positioning mechanism 6, respectively.

[0093] The frame 1 has an open structure at both ends, which are used to transport unpackaged products and packaged products, respectively.

[0094] The conveying device 2 is horizontally installed in the middle of the frame 1, dividing the frame 1 vertically. The product moves horizontally on the conveying device 2 to complete the heat sealing and conveying.

[0095] The conveying device 2 includes a feeding belt 21 and a receiving belt 22 from left to right. The beginning and end ends of the conveying device 2 are flush with or protrude from the left and right ends of the frame 1, and are used for product loading and unloading. The continuous horizontal conveying of the feeding belt 21 and the receiving belt 22 enables automated product loading-heat sealing-unloading, reducing manual intervention and improving packaging efficiency. Furthermore, the feeding belt 21 and the receiving belt 22 have the same width and their spacing is adapted to the sealing and cutting blade 52, ensuring precise alignment between the product conveying path and the heat sealing position.

[0096] The sealing and cutting blade 52 is located between the feeding belt 21 and the receiving belt 22, and the distance between the sealing and cutting blade 52 and the feeding belt 21 and the receiving belt 22 is <10mm.

[0097] The feeding belt 21 and the receiving belt 22 have the same conveying direction, and the feeding belt 21 and the receiving belt 22 have the same width.

[0098] Both the feeding belt 21 and the receiving belt 22 are conveyor belt structures, with drive shafts at both ends. One side of the drive shaft is connected to the drive device 7 to drive the feeding belt 21 and the receiving belt 22 to horizontally convey products.

[0099] The film storage mechanism 3 is rotatably mounted on the side walls of both sides of the frame 1 via a drive shaft. One side of the drive shaft of the film storage mechanism 3 is connected to the drive device 7 for driving the film storage mechanism 3 to convey the film roll.

[0100] The film storage mechanism 3 includes an upper film storage 31 and a lower film storage 32, which are symmetrically installed above and below the frame 1, respectively, and are symmetrically arranged with respect to the conveying device 2. The upper film storage 31 and the lower film storage 32 store the upper and lower rolls of film, respectively, and with the conveying device 2 as the center of symmetry, ensure that the rolls of film can be supplied simultaneously from both the top and bottom sides of the product, achieving full-wrap packaging of the product and avoiding incomplete packaging caused by film supply from one side.

[0101] The upper storage film 31 and the lower storage film 32 have the same axial length, and both the upper storage film 31 and the lower storage film 32 contain rolls of film. The upper storage film 31 and the lower storage film 32 have the same axial length and are adapted to the subsequent guide rollers to ensure that the output width of the roll film matches the width of the product and the feed belt 21, avoiding insufficient roll film width leading to packaging leakage or excessive width leading to material waste.

[0102] The film feeding guide mechanism 4 is rotatably mounted on the side walls of both sides of the frame 1 via a drive shaft. One side of the drive shaft of the film feeding guide mechanism 4 is connected to the drive device 7 to drive the film feeding guide mechanism 4 to convey the film roll.

[0103] The conveying device 2, the film storage mechanism 3, and the film delivery guiding mechanism 4 are all connected to the driving device 7 on the same side, which facilitates the driving device 7 to drive each device to rotate.

[0104] The film feeding and guiding mechanism 4, corresponding to the film storage mechanism 3, also includes an upper guide roller and a lower guide roller. The upper guide roller and the lower guide roller each include three guide rollers. The axial lengths of the upper guide roller and the lower guide roller are the same, and are also the same as the axial length of the upper film storage 31. The upper guide roller and the lower guide roller are arranged on the same side of the feeding belt 21 in the frame 1.

[0105] The upper guide roller includes a guide roller 41, a tension roller 42, and a drive roller 43, while the lower guide roller includes a guide roller 44, a tension roller 45, and a drive roller 46. The guide rollers provide initial guidance for the film roll, correcting angular deviations when the film roll exits the film storage mechanism 3, laying a foundation for precise conveying in subsequent tensioning and driving processes. The tension rollers adjust the film roll tension by varying their height and horizontal distance, preventing wrinkles due to excessive looseness or breakage due to excessive tightness, ensuring the film roll remains flat during conveying and heat sealing. The tangent of the drive roller's edge aligns with the feeding belt 21, ensuring the film roll conveying direction matches the product conveying direction. The drive roller 43's height is adapted to the product height, allowing the upper film roll to precisely cover the top surface of the product, while the lower film roll adheres tightly to the feeding belt 21, achieving all-around product wrapping.

[0106] The guide roller 41 and the guide roller 44 are symmetrically installed with respect to the conveying device 2, and the tension roller 42 and the tension roller 45 are symmetrically installed with respect to the conveying device 2; the edge tangents of the drive roller 43 and the drive roller 46 are on the same vertical line as the edge of the conveying direction of the feeding belt 21.

[0107] The vertical distance between the first drive roller 43 and the feeding belt 21 is the height of the conveyed product, and the second drive roller 46 is set close to the lower edge of the feeding belt 21.

[0108] The height and horizontal distance between the guide roller 41, tension roller 42, drive roller 43, guide roller 44, tension roller 45, and drive roller 46 on the frame 1 are all adjustable. This is used to adjust the tension of the film roll. The adjustment is achieved by setting multiple vertical grooves on the frame 1 and adjusting the height of each roller by inserting grooves of different heights.

[0109] The buffer platform 51 includes a fixed rod 511 and a telescopic rod 512. The fixed rod 511 is a hollow columnar structure, and its top end is detachably fixed to the frame 1 by bolts. The telescopic rod 512 is a columnar structure adapted to the fixed rod 511 and can be slidably inserted into the fixed rod 511. The fit clearance between the outer wall of the telescopic rod 512 and the inner wall of the fixed rod 511 is 0.2mm to ensure smooth axial sliding. The sliding fit between the fixed rod 511 and the telescopic rod 512 allows for height adjustment of the buffer platform 51 to accommodate products of different thicknesses.

[0110] An actuating cylinder is installed inside the telescopic rod 512 and connected to the fixed rod 511. The actuating cylinder is connected to the drive device 7 and is used to control the telescopic rod 512 to move up and down inside the fixed rod 511. The stroke distance of the actuating cylinder inside the telescopic rod 512 is 50-200mm.

[0111] The tail end of the telescopic rod 512 is opposite to the sealing and cutting knife 52. A soft material buffer 5122 is embedded in the tail end of the telescopic rod 512. The soft material buffer 5122 has a semi-circular arc structure, and its arc side is away from the sealing and cutting knife 52.

[0112] The soft material buffer zone 5122 has a depth of 1.5 mm and a length of 3.7 mm. Rollers 5121 are symmetrically arranged on the left and right sides of the soft material buffer zone 5122. The rollers 5121 are rotatably mounted at the tail end of the telescopic rod 512. When the film roll passes through the rollers 5121, it is shaped and conveyed at the lower edge of the rollers 5121. The semi-circular structure of the soft material buffer zone 5122 forms a uniform buffer when it contacts the sealing and cutting blade 52. The diameter of the rollers is 2.5 mm.

[0113] The central axis of the roller 5121 is parallel to the central axis of the film roll. The roller 5121 is installed in a manner where the end of the telescopic rod 512 has a groove and a corresponding protrusion is provided on the roller 5121; this is existing technology and will not be described in detail here. The rotatable design of the roller 5121 reduces frictional damage during film transport, and the parallel central axis arrangement ensures that the film roll unfolding direction is consistent with the transport direction. The installation method facilitates the disassembly and replacement of the roller 5121, reducing maintenance costs for vulnerable parts.

[0114] The heat sealing mechanism 5 is located inside the frame 1 and is a vertical structure.

[0115] The sealing and cutting knife bracket 54 is fixedly installed at the bottom of the frame 1 by bolts. The sealing and cutting knife 52 is fixedly installed between the sealing and cutting knife bracket 54 and the sealing and cutting knife actuation cylinder 53. The sealing and cutting knife actuation cylinder 53 is used to adjust the height of the sealing and cutting knife 52. The sealing and cutting knife 52 and the sealing and cutting knife actuation cylinder 53 are connected by quick-release bolts to facilitate the replacement of the sealing and cutting knife 52. The sealing and cutting knife actuation cylinder 53 is connected to the drive device 7. The stroke distance of the sealing and cutting knife actuation cylinder 53 is 50-200mm.

[0116] The sealing and cutting blade 52 has a U-shaped mounting groove inside, and the electric heating wire 521 is embedded in the U-shaped mounting groove and fixed by high-temperature resistant silicone material.

[0117] The length of the sealing and cutting blade 52 is the same as the width of the feeding belt 21 and the receiving belt 22 (in the non-conveying direction).

[0118] The sealing and cutting blade 52 is covered with a high-temperature resistant heat-insulating and anti-scalding layer on the outside (except for the operating end) to prevent the nearby roll film from melting or being burned when the sealing and cutting blade 52 is heated.

[0119] The sealing and cutting blade 52 has an operating end at its top, which is a pointed structure. Four air nozzles 522 are cut along the length of the sealing and cutting blade 52. Each air nozzle 522 connects to an air duct, and a cooling solenoid valve 523 is installed in the air duct. The distance between the air nozzles 522 is 20mm, and the diameter of each air nozzle 522 is 0.6mm. The pointed operating end of the sealing and cutting blade 52 facilitates precise cutting of the film roll. Its length, consistent with the width of the feeding belt 21, enables full-width heat sealing of the product, preventing incomplete sealing. The air nozzles 522 can promptly blow out cold air, accelerating cooling and shaping at the heat-sealed area and preventing the film roll from sticking. The cooling solenoid valve 523 can be precisely controlled by the intelligent control device 8 to achieve "immediate air blowing after heat sealing," preventing premature blowing of cold air from affecting the heat sealing effect or delayed blowing from causing untimely cooling, thus improving the accuracy of the cooling sequence.

[0120] The air duct is connected to a scroll-type evaporative air cooler via a duct pipe. A sealing ring (not shown in the figure) connects the air duct and the duct pipe. The scroll-type evaporative air cooler is existing technology and can be connected to the air duct using conventional ductwork. The temperature at the outlet of the scroll-type evaporative air cooler is 15℃, and the air volume is 10m³ / s. 3 / h.

[0121] The distance between the sealing and cutting blade 52 and the feeding belt 21 and the receiving belt 22 is less than 30mm.

[0122] The positioning mechanism 6 is installed on one side of the receiving belt 22 and is adjacent to the buffer platform 51.

[0123] The positioning mechanism 6 includes a fixed column 61 and a positioning rod 62, and a positioning seat 63 is fixedly installed at the bottom end of the positioning rod 62.

[0124] The fixed column 61 is a columnar structure, and its top end is detachably fixed to the frame 1 by bolts.

[0125] The positioning rod 62 is a columnar structure adapted to the fixing post 61, and can be slidably inserted into the fixing post 61. The fitting gap between the outer wall of the positioning rod 62 and the inner wall of the fixing post 61 is 0.1-0.3mm.

[0126] The positioning rod 62 is connected to the fixed column 61 and is equipped with an actuating cylinder. The actuating cylinder is connected to the driving device 7 and is used to control the positioning rod 62 to move up and down within the fixed column 61.

[0127] The stroke distance of the actuating cylinder inside the positioning rod 62 is 50-200mm.

[0128] The positioning mechanism 6 is installed on the receiving belt 22 and close to the buffer platform 51. It can quickly position the product when it reaches the heat sealing position, avoid the product shifting during transportation and avoid the heat sealing position deviation, and ensure that the heat sealing position of each product is consistent.

[0129] An infrared sensor is installed on the positioning seat 63 to detect when the product arrives at the positioning area, triggering the positioning cylinder to drive the positioning seat 63 to move downward to fix the product.

[0130] Both the infrared sensor and the actuating cylinder inside the positioning rod 62 are connected to the intelligent control device 8, which monitors and sends commands.

[0131] In this embodiment, the conveying device 2, the film storage mechanism 3, the film feeding guide mechanism 4, the heat sealing mechanism 5, and the positioning mechanism 6 are all connected to the intelligent control device 8, and the working parameters of the timely cooling heat sealing cutter device are adjusted by the intelligent control device 8.

[0132] The actuating cylinder inside the telescopic rod 512 and the sealing and cutting knife actuating cylinder 53 are both connected to the intelligent control device 8. They are used to control the telescopic rod 512 to move downward while the sealing and cutting knife 52 moves upward to clamp the roll film. Then, the roll film is cut under the action of the electric heating wire 521 inside the sealing and cutting knife 52.

[0133] Temperature sensors are also installed at both ends of the sealing and cutting blade 52 in the radial direction. The temperature sensors are connected to the intelligent control device 8 and are used to precisely control the temperature of the sealing and cutting blade 52. The vortex air cooler is connected to the intelligent control device 8, and the cooling solenoid valve 523 is connected to the intelligent control device 8.

[0134] In this embodiment, the driving device 7 can be a servo motor or other existing driveable device in the prior art, and no special limitation is made here; the driving device 7 connects all the structures that need to be driven in the timely cooling heat sealing cutter device, and the driving method is the prior art, which will not be described in detail here. The connection line between the driving device 7 and the intelligent control device 8 has been ignored in the figure.

[0135] This embodiment also provides a heat-sealing method for the aforementioned timely cooling heat-sealing cutter device, including the following steps:

[0136] Step 1: Place two rolls of film on the upper storage film 31 and the lower storage film 32. Pass the roll of film in the upper storage film 31 through the lower edge of the guide roller 41, the upper edge of the tension roller 42, and the upper edge of the drive roller 43 in sequence from the upper edge of the upper storage film 31. Pass the roll of film in the lower storage film 32 through the upper edge of the guide roller 44, the lower edge of the tension roller 45, and the lower edge of the drive roller 46 in sequence from the lower edge of the lower storage film 32. After completion, pass the two rolls of film between the buffer platform 51 and the sealing and cutting knife 52. Initially set the working parameters of the film storage mechanism 3 and the film feeding and guiding mechanism 4 to complete the conveying and tensioning of the rolls of film in the guide roller 41, the tension roller 42, the drive roller 43, the guide roller 44, the tension roller 45, and the drive roller 46.

[0137] Step 2: Power on the heating wire 521 in the sealing and cutting knife 52 to heat the sealing and cutting knife 52 to 120°C. Control the action cylinder 53 of the sealing and cutting knife and the action cylinder in the telescopic rod 512 to move the telescopic rod 512 downward and the sealing and cutting knife 52 upward. When the sealing and cutting knife 52 contacts the soft material buffer zone 5122 of the telescopic rod 512, the high temperature of the sealing and cutting knife 52 causes the roll film to stick together and seal. During sealing, the roll film in the upper storage film 31 is stretched and organized under the action of the roller 5121, and there will be no stacking. After sealing, immediately control the cooling solenoid valve 523 to open. The vortex air cooler blows air into the air duct through the cooling solenoid valve 523. The 15°C air enters different air outlets 522 through the air duct to blow air and cool the sticky roll film for 5 seconds. After the first sealing of the roll film is completed, immediately close the cooling solenoid valve 523 after blowing air.

[0138] Step 3: Place the product on the feeding belt 21 and convey it to the receiving belt 22. The film roll wraps around the product during its movement. When the infrared sensor detects that the wrapped product has moved to the positioning area under the positioning seat 63, control the actuating cylinder between the fixing column 61 and the positioning rod 62. This causes the positioning rod 62 to press down, moving the positioning seat 63 downwards to fix the product. At this time, the end of the film roll away from the sealing and cutting blade 52 is a sealed structure, and the end close to the sealing and cutting blade 52 is an open structure. Again, control the actuating cylinders of the sealing and cutting blade 53 and the telescopic rod 512, causing the telescopic rod 512 to move downwards and the sealing and cutting blade 52 to move upwards. When the sealing and cutting blade 52... When the flexible material buffer zone 5122 of the telescopic rod 512 contacts the film, the high temperature of the sealing and cutting knife 52 causes the roll film to stick together and seal. During sealing, the roll film in the upper storage film 31 is stretched and organized under the action of the roller 5121, and there will be no stacking. After sealing, the cooling solenoid valve 523 is opened immediately, and the vortex air cooler blows air into the air duct through the cooling solenoid valve 523. The 15°C air enters different air blowing ports 522 through the air duct to cool down the sticky roll film. After blowing for 5 seconds, the positioning rod 62 is reset. The product is wrapped and heat-sealed in a cycle. After each cycle, the cooling solenoid valve 523 is closed immediately and opened again for the next blowing.

[0139] In this embodiment, the control operations and parameter settings are all completed by the intelligent control device 8 and driven by the drive device 7. The heat-sealed product is transferred to the next stage by the receiving belt 22.

[0140] As can be seen from the above, the timely cooling heat-sealing cutter device of this utility model has a wide range of applications, low cost, and a very high market prospect.

[0141] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any modifications or equivalent changes made based on the technical essence of the present utility model shall still fall within the scope of protection claimed by the present utility model.

Claims

1. A hot-seal knife apparatus for on-the-fly cooling, characterized by, The instant cooling heat sealing cutter device comprises a rack (1), a conveying device (2), a film storage mechanism (3), a film feeding guide mechanism (4), a heat sealing mechanism (5), a positioning mechanism (6), a driving device (7) and an intelligent control device (8) according to the product conveying direction. The rack (1) is a square structure, and the conveying device (2), the film storage mechanism (3), the film feeding guide mechanism (4), the heat sealing mechanism (5) and the positioning mechanism (6) are all installed on the rack (1). The heat sealing mechanism (5) comprises a buffer platform (51) and a sealing cutter (52) from top to bottom. The buffer platform (51) is symmetrically provided with rollers (5121) for relaxing and fixing the film roll. The sealing cutter (52) is provided with an electric heating wire (521). The sealing cutter (52) is provided with a blowing port (522) connected with a cooling electromagnetic valve (523) for controlling the blowing port (522) to blow out cold air at any time.

2. The instant-cooled heat seal cutter device of claim 1, wherein, The conveying device (2) comprises a feeding belt (21) and a collecting belt (22) from left to right.

3. The instant-cooled heat seal cutter device of claim 1, wherein, The film storage mechanism (3) comprises an upper film storage (31) and a lower film storage (32), which are symmetrically installed above and below the rack (1) respectively and symmetrically arranged with the conveying device (2).

4. The instant-cooled heat seal cutter device of claim 2, wherein, The film feeding guide mechanism (4) comprises upper and lower guide rollers, each of which comprises at least three guide rollers.

5. A heat sealed knife on-the-fly cooling device according to claim 4, wherein, The upper guide roller comprises a guide roller one (41), a tensioning roller one (42) and a driving roller one (43), and the lower guide roller comprises a guide roller two (44), a tensioning roller two (45) and a driving roller two (46).

6. A heat sealed knife on-the-fly cooling device according to claim 5, wherein, The tangential lines of the edges of the driving roller one (43) and the driving roller two (46) are on the same vertical line with the edges of the conveying direction of the feeding belt (21).

7. The instant-cooled heat seal cutter device of claim 1, wherein, The buffer platform (51) comprises a fixed rod (511) and an extension rod (512).

8. A time-cooled heat seal cutter device according to claim 7, wherein, The tail end of the extension rod (512) is opposite to the sealing cutter (52), and the tail end of the extension rod (512) is embedded with a soft material buffer area (5122) in a semicircular arc structure, and the arc side of the soft material buffer area (5122) is away from the sealing cutter (52).

9. The on-the-fly cooled hot-seal knife apparatus of claim 1, wherein, The top end of the sealing cutter (52) is provided with an operation end, and at least four blowing ports (522) are opened along the length of the sealing cutter (52) on the operation end, the blowing ports (522) are connected with a wind channel, and the wind channel is provided with a cooling electromagnetic valve (523).

10. A time-cooled heat seal cutter device according to claim 9, wherein, The wind channel is connected with a scroll type air cooler through a wind pipe, and a sealing ring is connected between the wind channel and the wind pipe.

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