Sealing cutter for heat shrinkage film cloth roll packaging machine

Abstract

The invention discloses a sealing cutter for a heat shrinkage film yardage roll packaging machine, and relates to the technical field of packaging equipment, the sealing cutter comprises a cutter holder, a mounting groove is formed in the cutter holder, a threading hole is formed in the cutter holder, the threading hole is communicated with the mounting groove, a heating assembly is arranged in the mounting groove, and four storage grooves are formed in the cutter holder. According to the sealing cutter, the cutter holder, the mounting groove and the limiting mechanism are matched for use, so that the cutter can be quickly and conveniently disassembled, the problem that an existing sealing cutter is difficult to maintain, replace and adjust due to a complex connecting mode is solved, the time and energy required by maintenance are greatly shortened, the equipment maintenance efficiency is improved, the downtime is shortened, and the production efficiency is improved. And meanwhile, due to the fact that the disassembly process is simple, the risk that other parts of the packaging machine are damaged due to disassembly operation is reduced, and the maintenance cost including the labor cost and the part replacement cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of packaging equipment, in particular to a sealing and cutting knife for a heat shrinkable film roll packaging machine. Background Art

[0002] In the packaging industry, heat shrink film packaging technology is a common and important packaging method. It is widely used in many fields such as food, medicine, and daily necessities. The heat shrink film can fit tightly on the surface of the product, providing good protection and beautiful appearance. The heat shrink film roll packaging machine is the key equipment to realize the heat shrink film packaging process. In the heat shrink film roll packaging machine, the sealing and cutting knife plays a vital role. It is responsible for cutting and sealing the heat shrink film, which directly affects the quality and efficiency of packaging.

[0003] In the process of heat shrink film roll packaging, the sealing and cutting knife is one of the key components. There are some problems with the sealing and cutting knives used in existing heat shrink film roll packaging machines. Traditional sealing and cutting knives are often fixed on the packaging machine through complex connection methods, which makes it extremely inconvenient to operate when the cutter needs to be maintained, replaced or adjusted. Due to the complex connection structure, it takes a lot of time and effort to disassemble the cutter, and other parts of the packaging machine may be damaged during the disassembly process. This inconvenience leads to low equipment maintenance efficiency and increased downtime, which in turn affects the continuity and efficiency of the entire production process. At the same time, the complex disassembly process also increases the maintenance cost, both the labor cost and the cost of replacing parts due to misoperation are increased accordingly; for this reason, we provide a sealing and cutting knife for a heat shrink film roll packaging machine to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to make up for the deficiencies of the prior art and provide a sealing and cutting knife for a heat shrinkable film roll packaging machine.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sealing and cutting knife for a heat shrinkable film roll packaging machine, comprising a knife seat, a mounting groove is provided inside the knife seat, a threading hole is provided inside the knife seat, and the threading hole is communicated with the mounting groove, a heating component is provided inside the mounting groove, four storage grooves are provided inside the knife seat, a rolling mechanism is provided inside each of the four storage grooves, a cutting knife is slidably connected to the inner wall of the mounting groove, a limiting mechanism is provided inside the cutting knife, two sealing knives are fixedly installed on the bottom of the knife seat, a placement groove is provided on the top of the cutting knife, and two limiting slots are provided on the inner wall of the mounting groove.

[0006] Furthermore, the heating component includes a battery fixedly mounted on the inner wall of the mounting groove, the input end of the battery is electrically connected to a charging line, the output end of the battery is electrically connected to a power supply line, the end of the power supply line away from the battery is electrically connected to a ceramic heater, the top of the ceramic heater is fixedly connected to the inner wall of the mounting groove, and the ceramic heater slides with the placement groove.

[0007] Furthermore, the rolling mechanism includes a guide rod slidably connected to the inner wall of the storage groove, one end of the guide rod is fixedly connected to a limiting plate, and the outer surface of the limiting plate slides with the inner wall of the storage groove.

[0008] Furthermore, one end of the guide rod away from the limiting plate is fixedly connected to a wheel frame, the inner wall of the wheel frame is rotatably connected to a rotating shaft, and the outer surface of the rotating shaft is fixedly connected to a wheel.

[0009] Furthermore, an elastic member 1 is fixedly connected to the top of the limiting plate, and one end of the elastic member 1 away from the limiting plate is fixedly connected to the inner wall of the storage groove.

[0010] Furthermore, the limiting mechanism includes a mounting plate fixedly connected to the inner wall of the movable groove, a buckle groove is provided on the outer surface of the mounting plate, a guide cylinder is fixedly connected to the inner wall of the mounting plate, and one end of the guide cylinder away from the mounting plate is fixedly connected to the inner wall of the movable groove.

[0011] Furthermore, a limiting groove is provided on the inner wall of the guide cylinder, and the limiting groove extends to the outer surface of the guide cylinder, the inner wall of the guide cylinder is slidably connected to a limiting rod, and the limiting rod is inserted into the inside of the limiting slot, the outer surface of the limiting groove is fixedly connected to a movable plate, and the movable plate slides with the limiting groove, and the outer surface of the movable plate is provided with a second buckle groove.

[0012] Furthermore, an elastic member 2 is sleeved on the outer surface of the guide cylinder, one end of the elastic member 2 is fixedly connected to the outer surface of the mounting plate, and the other end of the elastic member 2 is fixedly connected to the outer surface of the movable plate.

[0013] Compared with the prior art, the sealing and cutting knife for the heat shrinkable film roll packaging machine has the following beneficial effects:

[0014] 1. The present invention can achieve a fixed limiting effect on the cutter by means of the provided mounting groove and limiting mechanism. The provided limiting mechanism can quickly release the fixed limiting of the cutter. The cutter holder, the mounting groove and the limiting mechanism cooperate with each other to facilitate quick and convenient disassembly of the cutter, thereby solving the problem of difficult maintenance, replacement and adjustment of the existing sealing and cutting knives due to the complex connection method, greatly shortening the time and effort required for maintenance, improving the equipment maintenance efficiency, reducing the downtime, and ensuring the continuity of the production process. At the same time, since the disassembly process is simple, the risk of damage to other components of the packaging machine due to the disassembly operation is reduced, thereby reducing the maintenance cost, including the labor cost and the cost of replacing parts.

[0015] 2. The present invention uses a battery as an energy source, which can be conveniently charged through a charging cable, ensuring a continuous supply of electric energy. When sealing and cutting operations are required, the electric energy stored in the battery is stably transmitted to the ceramic heater through the power supply line. The ceramic heater is located inside the mounting groove, thereby being able to achieve a heating effect on the cutter. This layout allows heat to be concentrated near the cutter, reducing heat loss and improving heat utilization efficiency.

[0016] 3. The present invention enables the wheel to contact the surface of the heat shrink film by the downward movement of the sealing and cutting knife. When the sealing and cutting knife moves downward, the wheel drives the wheel frame, the guide rod, and the limit plate to squeeze the wheel upward, so that the elastic member is deformed and stores a certain elastic potential energy. At this time, the wheel continues to squeeze the limit plate, the guide rod, the wheel frame and the wheel downward, so that the wheel is always in contact with the surface of the heat shrink film and rolls. The rolling of the wheel can apply uniform pressure to the heat shrink film, squeeze out the wrinkles and bubbles on the surface of the heat shrink film, and make the heat shrink film fit more smoothly on the surface of the packaged article. This smooth heat shrink film can be better cut and sealed in the subsequent sealing and cutting process, reducing the sealing and cutting quality problems caused by the uneven heat shrink film, and improving the sealing and cutting quality and the aesthetics of the packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional front view structure of the present invention;

[0018] Figure 2 It is a schematic diagram of a three-dimensional front view cross-sectional structure of the present invention;

[0019] Figure 3 It is a rear view structural schematic diagram of the present invention;

[0020] Figure 4 It is a schematic diagram of the knife holder structure of the present invention;

[0021] Figure 5 A schematic diagram of a heating assembly of the present invention;

[0022] Figure 6 It is a schematic diagram of the rolling mechanism of the present invention;

[0023] Figure 7 It is a schematic diagram of the limiting mechanism of the present invention;

[0024] Figure 8 It is a schematic diagram of the motion structure of the limiting mechanism of the present invention.

[0025] In the figure: 1. knife holder; 2. mounting slot; 3. heating assembly; 301. battery; 302. charging cable; 303. power supply cable; 304. ceramic heater; 4. threading hole; 5. storage slot; 6. rolling mechanism; 601. guide rod; 602. limiting plate; 603. wheel frame; 604. rotating shaft; 605. elastic member 1; 606. wheel; 7. cutting knife; 8. movable slot; 9. limiting mechanism; 901. mounting plate; 902. buckle slot 1; 903. guide cylinder; 904. limiting slide slot; 905. limiting rod; 906. movable plate; 907. buckle slot 2; 908. elastic member 2; 10. sealing knife; 11. placement slot; 12. limiting slot. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Embodiment 1

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a sealing and cutting knife for a heat shrinkable film roll packaging machine includes a knife seat 1, a mounting groove 2 is provided inside the knife seat 1, a threading hole 4 is provided inside the knife seat 1, and the threading hole 4 is communicated with the mounting groove 2, a heating component 3 is provided inside the mounting groove 2, four storage grooves 5 are provided inside the knife seat 1, a rolling mechanism 6 is provided inside each of the four storage grooves 5, a cutting knife 7 is slidably connected to the inner wall of the mounting groove 2, a limiting mechanism 9 is provided inside the cutting knife 7, two sealing knives 10 are fixedly installed on the bottom of the knife seat 1, a placement groove 11 is provided on the top of the cutting knife 7, and two limiting slots 12 are provided on the inner wall of the mounting groove 2.

[0030] In the present embodiment, the knife holder 1 is made of a high-strength aluminum alloy material as a whole. This material has the characteristics of light weight and high strength. It can reduce the overall load of the packaging machine while ensuring the structural stability. Its shape is roughly a rectangular parallelepiped, and a mounting groove 2 and a threading hole 4 and other structures are provided inside. The inner wall of the mounting groove 2 is finely polished and has a smooth surface. The material is the same as the main body of the knife holder 1, which is an aluminum alloy material. Its shape is a rectangular groove, which is conducive to the concentration and conduction of heat. The mounting groove 2 is closely matched with the cutter 7, and the cutter 7 is slidably connected to the inner wall of the mounting groove 2. This sliding connection mode enables the cutter 7 to move smoothly in the mounting groove 2. At the same time, the mounting groove 2 guides and limits the cutter 7, ensuring that the cutter 7 is stable during the working process. The installation groove 2 cooperates with the heating component 3 to provide an installation position for the heating component 3. The heat generated by the heating component 3 can be quickly transferred to the cutter 7 through the inner wall of the installation groove 2, so as to achieve efficient heating of the cutter 7. This close matching method allows the heat to be concentrated near the cutter 7, reducing heat loss and improving heat utilization efficiency. The threading hole 4 is in the shape of a circular hole with a moderate diameter, which can just accommodate the wires of the heating component 3. The threading hole 4 is made of insulating plastic, which can effectively prevent leakage of the wires and ensure safe use. The existence of the threading hole 4 allows the wires of the heating component 3 to pass through the knife seat 1 in an orderly manner to achieve the transmission of electrical energy. This connection method avoids the disorder of the lines, which is not only beneficial The storage groove 5 is not only convenient for the normal operation and maintenance of the equipment, but also protects the wires from damage by external factors. The storage groove 5 is in the shape of a cylindrical groove, and its size matches that of the rolling mechanism 6. The material of the storage groove 5 is the same as that of the main body of the knife seat 1, which is an aluminum alloy. The four storage grooves 5 are evenly distributed inside the knife seat 1. This symmetrical distribution method can ensure that the rolling mechanism 6 applies uniform pressure to the heat shrink film when it is working. The existence of the storage groove 5 provides an installation space for the rolling mechanism 6, and limits the movement range of the rolling mechanism 6 to a certain extent, ensuring that the rolling mechanism 6 can operate stably during operation. The design of the rolling mechanism 6 can squeeze out the wrinkles and bubbles on the surface of the heat shrink film, so that the heat shrink film can fit more smoothly on the surface of the packaged article. This smooth heat shrink film is easy to be used in subsequent sealing. During the cutting process, it can be better cut and sealed, reducing the sealing and cutting quality problems caused by the unevenness of the heat shrink film, improving the sealing and cutting quality and the aesthetics of the packaging, the cutter 7 is made of high-quality high-speed steel, this material has high hardness, high wear resistance and good toughness, its shape is a rectangular thin sheet, the blade part is finely ground and extremely sharp, the cutter 7 is slidably connected to the inner wall of the mounting groove 2, and is fixed and limited under the action of the limiting mechanism 9. This sliding connection and limiting method enables the cutter 7 to be quickly replaced and adjusted when necessary, improving the maintenance efficiency of the equipment, when the sealing and cutting operation is required, the cutter 7 is in the state where the heating component 3 is heated, and on the basis of the heat shrink film pre-treated by the rolling mechanism 6, the heat shrink film is cut.The heat of the cutter 7 will be transferred to the sealing knife 10. When the cutter 7 cuts the heat shrink film, the sealing knife 10 seals the edge of the cut heat shrink film so that the edge of the heat shrink film fits tightly together. When the cutter 7 needs to be disassembled, the fixed limit of the cutter 7 can be quickly released by operating the relevant parts of the limit mechanism 9, which is convenient for the rapid disassembly of the cutter 7, solving the problem of difficult maintenance, replacement and adjustment of the existing sealing cutter due to the complex connection method. The sealing knife 10 is made of the same high-quality high-speed steel as the cutter 7, with high hardness, high wear resistance and good toughness. It is in the shape of a rectangular thin sheet, and the blade part is finely ground and extremely sharp. The sealing knife 10 is fixedly installed at the bottom of the knife seat 1 and works with the cutter 7. When the cutter 7 is After the heat shrink film is cut, the sealing knife 10 performs a sealing operation on the edge of the cut heat shrink film, so that the edge of the heat shrink film fits tightly together. The placement groove 11 is in the shape of a rectangular groove, and its size matches the ceramic heater 304. The material of the placement groove 11 is the same as that of the cutter 7 body, which is high-quality high-speed steel. The placement groove 11 provides a certain space for the heating component 3, so that the cutter 7 can be pulled forward for disassembly without obstruction, ensuring the rapid disassembly of the cutter 7. The shape of the limiting slot 12 is a circular hole, and its diameter is moderate, which can just accommodate the limiting rod 905. The material of the limiting slot 12 is the same as that of the installation slot 2 body, which is aluminum alloy. The limiting slot 12 cooperates with the limiting mechanism 9 to achieve a fixed limiting effect on the cutter 7.

[0031] The working steps of this embodiment are as follows:

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the knife holder 1 is installed on the heat shrink film roll packaging machine, which provides an installation position and support force for other components to maintain the stability of the entire sealing and cutting knife structure. The installation groove 2 provides an installation position for the heating component 3 on the one hand, and on the other hand, through its special structural design, it is conducive to heat conduction to the cutter 7 to achieve heating of the cutter 7. The threading hole 4 ensures that the power supply line of the heating component 3 can be reasonably arranged to avoid the influence of the cluttered line on the normal operation and maintenance of the equipment, and also protects the wires from damage by external factors. The heating component 3 provides heat for the cutter 7, so that the cutter 7 can be heated during the sealing and cutting heat. When shrinking the film, the heat shrink film can be softened by heat faster, thereby improving the quality and efficiency of sealing and cutting, reducing the cutting force, making the cutting edge more neat and smooth, and promoting the edges of the heat shrink film to be better fused together to form a tight sealing effect. The storage groove 5 provides an installation space for the rolling mechanism 6, and limits the movement range of the rolling mechanism 6 to a certain extent, ensuring that the rolling mechanism 6 can operate stably during the working process. When the sealing and cutting knife moves downward, the rolling mechanism 6 can squeeze out the wrinkles and bubbles on the surface of the heat shrink film, so that the heat shrink film can be more evenly attached to the surface of the packaged article. This flat The heat shrink film can be better cut and sealed in the subsequent sealing and cutting process, reducing the sealing and cutting quality problems caused by the unevenness of the heat shrink film, improving the sealing and cutting quality and the aesthetics of the packaging, the cutter 7 is slidably connected to the inner wall of the mounting groove 2, and is fixed and limited under the action of the limiting mechanism 9. When the sealing and cutting operation is required, the cutter 7 cuts the heat shrink film in the state where the heating component 3 is heated and the rolling mechanism 6 pre-treats the heat shrink film. The limiting mechanism 9 can fix and limit the cutter 7 to ensure that the position of the cutter 7 is accurate and stable during the working process. At the same time, it is convenient for the quick disassembly of the cutter 7, which solves the problem of difficult maintenance, replacement and adjustment caused by the complex connection method of the existing sealing cutter. The heat of the cutter 7 will be transmitted to the sealing knife 10. After the cutter 7 cuts the heat shrink film, the sealing knife 10 seals the edge of the cut heat shrink film so that the edges of the heat shrink film fit tightly together. The placement groove 11 can provide a certain space for the heating component 3, so that the cutter 7 can be pulled forward for disassembly without obstruction, thereby ensuring the quick disassembly of the cutter 7. The limiting slot 12 cooperates with the limiting mechanism 9 to achieve a fixed limiting effect on the cutter 7.

[0033] Embodiment 2

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the heating component 3 includes a battery 301 fixedly mounted on the inner wall of the mounting groove 2, the input end of the battery 301 is electrically connected to a charging line 302, the output end of the battery 301 is electrically connected to a power supply line 303, the end of the power supply line 303 away from the battery 301 is electrically connected to a ceramic heater 304, the top of the ceramic heater 304 is fixedly connected to the inner wall of the mounting groove 2, and the ceramic heater 304 slides with the placement groove 11.

[0035] In this embodiment, the storage battery 301 adopts a high-performance lithium battery. This material has the advantages of high energy density, low self-discharge rate, and long cycle life. It can provide a stable and reliable source of power for the heating component 3. Its shape is a rectangular parallelepiped. This shape design is convenient for fixed installation in the installation groove 2, and is also conducive to the connection with the charging line 302 and the power supply line 303 to ensure the stability of the line connection. As an energy storage unit of the entire heating system, it obtains and stores electrical energy through the charging line 302. During the sealing and cutting operation, it can continuously and stably provide electrical energy to the ceramic heater 304 to ensure the continuity of the heating process, thereby ensuring that the cutter 7 can always Maintaining a suitable temperature, improving the sealing and cutting quality and efficiency, the charging line 302 adopts a high-quality copper core conductor, which is covered with an insulating rubber layer. The copper core conductor has good conductivity and can ensure that the electric energy is efficiently transmitted from the external power source to the battery 301. The insulating rubber layer plays an insulating protection role to prevent the occurrence of leakage and ensure safe use. The shape of the charging line 302 is an elongated cylinder with a moderate diameter, which can not only meet the requirements of electric energy transmission, but also facilitate wiring in the threading hole 4. It is closely connected with the input end of the battery 301 to ensure that the electric energy can smoothly enter the battery 301. At the same time, the threading hole 4 provides a reasonable wiring passage for the charging line 302. The power supply line 303 is also made of high-quality copper core wire wrapped with an insulating rubber layer, similar to the charging line 302, to ensure the efficiency and safety of power transmission. It is also a slender cylinder, and its length is reasonably designed according to the size of the installation slot 2 and the distance between the battery 301 and the ceramic heater 304, ensuring that the power can be transmitted from the battery 301 to the ceramic heater 304 without affecting the normal operation of other components. It connects the output end of the battery 301 and the ceramic heater 304, and in the power transmission The ceramic heater 304 plays a key role in the process. The close connection with the battery 301 and the ceramic heater 304 ensures the stable transmission of electric energy. The ceramic heater 304 is made of high-quality ceramic material. Ceramics have the advantages of high temperature resistance, good thermal conductivity, strong chemical stability, etc. It can work stably in a high temperature environment and can quickly convert electrical energy into thermal energy to provide efficient heating for the cutter 7. Its shape is a flat rectangular parallelepiped. This shape can better fit the inner wall of the mounting groove 2, increase the contact area with the mounting groove 2, and is beneficial to the conduction of heat. At the same time, the flat shape also enables the ceramic heater 304 to better slide with the cutter 7 in the placement groove 11.

[0036] The working steps of this embodiment are as follows:

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4and Figure 5 As shown, first, an external power source is connected to the battery 301 through the charging line 302, and the battery 301 is charged. Since the battery 301 adopts a high-performance lithium battery, it has good charging performance and can quickly store electric energy. When sealing and cutting operations are required, the battery 301 is used as an energy source, and its stored electric energy is prepared to be transmitted to the ceramic heater 304 through the power supply line 303. After the electric energy is transmitted to the ceramic heater 304 through the power supply line 303, the ceramic heater 304 starts to work. After receiving the electric energy, it quickly heats up, and the generated heat is transmitted to the cutter 7 through the inner wall of the mounting groove 2, thereby realizing efficient heating of the cutter 7, so that the cutter 7 can make the heat shrink film soften faster when sealing and cutting the heat shrink film, thereby improving the quality and efficiency of sealing and cutting.

[0038] Embodiment 3

[0039] like Figure 1 , Figure 3 and Figure 6 As shown, the rolling mechanism 6 includes a guide rod 601 slidably connected to the inner wall of the storage groove 5, one end of the guide rod 601 is fixedly connected to a limiting plate 602, and the outer surface of the limiting plate 602 slides with the inner wall of the storage groove 5, the end of the guide rod 601 away from the limiting plate 602 is fixedly connected to a wheel frame 603, the inner wall of the wheel frame 603 is rotatably connected to a rotating shaft 604, the outer surface of the rotating shaft 604 is fixedly connected to a wheel 606, the top of the limiting plate 602 is fixedly connected to an elastic member 605, and the end of the elastic member 605 away from the limiting plate 602 is fixedly connected to the inner wall of the storage groove 5.

[0040] In the present embodiment, the guide rod 601 is made of stainless steel. Stainless steel has the characteristics of strong corrosion resistance, high strength and good wear resistance, etc., which can ensure that the guide rod 601 maintains good performance in a complex working environment and provides a long-term and stable guiding effect for the rolling mechanism 6. Its slender cylindrical shape design can slide smoothly in the storage groove 5, providing a precise guiding path for the movement of the wheel 606, so that the wheel 606 can accurately roll the heat shrink film to ensure the uniformity and accuracy of the rolling. The limiting plate 602 is made of stainless steel. The high strength and wear resistance of stainless steel make the limiting plate 602 not easy to deform when it is subjected to the force transmitted by the wheel 606. The shape of the circular thin plate can fit closely with the inner wall of the storage groove 5. To ensure good sliding performance, when the guide rod 601 transmits force, the limit plate 602 slides in the storage groove 5, and through cooperation with the storage groove 5, the movement range of the guide rod 601 is limited, thereby stabilizing the movement trajectory of the wheel 606. At the same time, the elastic member 605 connected to the top can store energy when the wheel 606 is squeezed, providing power support for the continuous rolling of the wheel 606, and ensuring the continuity of rolling. The wheel frame 603 is made of aluminum alloy. The light weight and high strength of aluminum alloy can provide a stable supporting structure for the wheel 606 and the shaft 604 without adding too much weight burden. Its U-shaped structure is reasonably designed and can cooperate closely with the shaft 604 and the wheel 606 to ensure that the wheel 606 can rotate around the shaft 604 rotates flexibly, so that the wheel 606 can better adapt to the shape changes of the film surface when rolling the heat shrink film, thereby improving the uniformity and consistency of the rolling effect. The rotating shaft 604 is made of high-quality steel, and the surface is quenched. The high-quality steel provides sufficient strength, and the quenching treatment further improves its hardness and wear resistance. Its cylindrical shape is adapted to the installation requirements of the wheel frame 603 and the wheel 606. It is installed on the inner wall of the wheel frame 603 and fixedly connected to the wheel 606, so that the wheel 606 can rotate around it stably and flexibly, ensuring the smoothness and stability of the wheel 606 rolling on the surface of the heat shrink film, thereby improving the quality and efficiency of the rolling operation. The wheel 606 is made of rubber material, and its surface has a specific texture. The elasticity and softness of the rubber The toughness enables the wheel 606 to fit tightly with the heat shrink film when it contacts it, avoiding damage to the film. The surface texture increases the friction between the wheel 606 and the heat shrink film, which helps to better roll the heat shrink film. Its circular shape and appropriate diameter are carefully designed according to the width and rolling requirements of the heat shrink film. It can comprehensively and effectively roll the heat shrink film, squeeze out the wrinkles and bubbles on the surface of the film, and make the heat shrink film fit more smoothly on the surface of the packaged article, thereby improving the sealing and cutting quality and the aesthetics of the packaging. The elastic member 605 is made of spring steel, which has good elastic properties. Its shape is usually spiral, one end of which is fixedly connected to the limiting piece 602, and the other end is fixedly connected to the inner wall of the storage slot 5. When the wheel 606 is squeezed,The elastic member 605 is deformed to store elastic potential energy. After the extrusion disappears, the potential energy is released to provide power for the continuous rolling of the wheel 606, ensuring that the wheel 606 always contacts and rolls with the surface of the heat shrink film, maintaining the uniformity and continuity of the rolling.

[0041] The working steps of this embodiment are as follows:

[0042] like Figure 1 , Figure 3 and Figure 6 As shown, the sealing and cutting knife moves downward, and the wheel 606 contacts the surface of the heat shrink film. When the sealing and cutting knife moves downward, the wheel 606 drives the wheel frame 603, the guide rod 601, and the limiting piece 602 to squeeze the wheel 606 upward, so that the elastic member 605 is deformed and stores a certain elastic potential energy. At this time, the wheel 606 continues to squeeze the limiting piece 602, the guide rod 601, the wheel frame 603 and the wheel 606 downward, so that the wheel 606 is always in contact with the surface of the heat shrink film and rolls. The rolling of the wheel 606 can apply uniform pressure to the heat shrink film, squeeze out the wrinkles and bubbles on the surface of the heat shrink film, and make the heat shrink film fit more evenly on the surface of the packaged article. This flat heat shrink film can be better cut and sealed in the subsequent sealing and cutting process, reducing the sealing and cutting quality problems caused by the uneven heat shrink film, and improving the sealing and cutting quality and the aesthetics of the packaging.

[0043] Embodiment 4

[0044] like Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8 As shown, the limiting mechanism 9 includes a mounting plate 901 fixedly connected to the inner wall of the movable groove 8, a buckle groove 902 is provided on the outer surface of the mounting plate 901, a guide cylinder 903 is fixedly connected to the inner wall of the mounting plate 901, and the end of the guide cylinder 903 away from the mounting plate 901 is fixedly connected to the inner wall of the movable groove 8, a limiting slide groove 904 is provided on the inner wall of the guide cylinder 903, and the limiting slide groove 904 penetrates to the outer surface of the guide cylinder 903, and the inner wall of the guide cylinder 903 is slidably connected to the limiting plug rod 905, and the limiting rod 905 is inserted into the inside of the limiting slot 12, the outer surface of the limiting slide groove 904 is fixedly connected with a movable plate 906, and the movable plate 906 slides with the limiting slide groove 904, the outer surface of the movable plate 906 is provided with a buckle groove 907, the outer surface of the guide cylinder 903 is sleeved with an elastic member 908, one end of the elastic member 908 is fixedly connected to the outer surface of the mounting plate 901, and the other end of the elastic member 908 is fixedly connected to the outer surface of the movable plate 906.

[0045] In this embodiment, the mounting plate 901 is made of aluminum alloy, which has the advantages of light weight, high strength, and corrosion resistance. It is shaped like a rectangular thin sheet, which is convenient for fixed installation on the inner wall of the movable groove 8 and convenient for connection with other components. A buckle groove 902 is opened on the outer surface for easy operation. The inner wall is fixedly connected to the guide cylinder 903 to provide a stable guide channel for the limit rod 905 to ensure accurate insertion and extraction of the limit slot 12 to achieve accurate fixation and limit of the cutter 7. The guide cylinder 903 is made of stainless steel, which has high strength, strong corrosion resistance and good wear resistance. It is cylindrical in shape with an inner diameter of The outer diameter of the limit rod 905 is matched, and the length is reasonably designed to connect the mounting plate 901 and the inner wall of the movable groove 8. The inner wall is provided with a limit slide groove 904 to cooperate with the limit rod 905 and the movable plate 906 to ensure the movement accuracy and stability. The connection with the mounting plate 901 and the inner wall of the movable groove 8 ensures the position is fixed, and provides an accurate guide path for the limit rod 905 to achieve effective fixation and limit of the cutter 7. The limit rod 905 is made of stainless steel, and its high strength and wear resistance ensure reliable fixation and limit. It is shaped like a slender cylinder, and its outer diameter matches the inner diameter of the guide cylinder 903, so it can slide smoothly. The guide cylinder 903 slides inwardly and fits closely with the inner wall, and drives the accurate insertion and extraction of the limit slot 12 through the moving plate 906. When inserted, ensure that the position of the cutter 7 in the installation slot 2 is accurate and stable to prevent deviation and ensure the working accuracy of the sealing cutter. The moving plate 906 is made of aluminum alloy, which is light in weight and high in strength. A buckle groove 907 is opened on the outer surface for easy operation. The size matches the limit slide groove 904 and can slide smoothly. It cooperates with the limit plug rod 905 through the guide cylinder 903 to drive synchronous movement and is connected to the elastic member 908. When pulled, the elastic member 908 is compressed to store potential energy, and when released, The limiting plug rod 905 is driven to quickly reset to achieve rapid fixation and limiting of the cutter 7, thereby improving the installation and disassembly efficiency. The elastic member 908 is made of spring steel with good elastic properties and is usually spiral in shape. One end is fixedly connected to the outer surface of the mounting plate 901, and the other end is fixedly connected to the outer surface of the movable plate 906. When the movable plate 906 is pulled, it is compressed to store potential energy. During the installation or disassembly process of the cutter 7, the potential energy is released to drive the movable plate 906 and the limiting plug rod 905 to move quickly, thereby achieving rapid fixation and limiting of the cutter 7, thereby improving the operating efficiency and ensuring the working stability.

[0046] The working steps of this embodiment are as follows:

[0047] like Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8As shown, first insert a finger into the second buckle slot 907, and then pull the movable plate 906 towards the direction close to the mounting plate 901. At this time, the movable plate 906 will drive the limiting rod 905 to move with it, so that the limiting rod 905 moves out of the limiting slot 12, thereby releasing the fixed limit of the cutter 7. At the same time, the movable plate 906 will squeeze the elastic member 2 908, causing it to deform and store a certain amount of elastic potential energy. Finally, insert another finger into the buckle slot 1 902, and pull the mounting plate 901 forward. At this time, The mounting plate 901 will drive the cutter 7 to move out of the mounting slot 2, completing the disassembly process of the cutter 7. After the maintenance work of the cutter 7 is completed, it will be reinserted into the mounting slot 2 for installation. At this time, the pulled movable plate 906 is released, and the compressed elastic member 908 will release the elastic potential energy, thereby driving the movable plate 906 and the limiting plug rod 905 to move quickly away from the mounting plate 901, so that the limiting plug rod 905 is quickly inserted into the limiting slot 12 to achieve a fixed limiting effect on the cutter 7, and the quick installation of the cutter 7 is completed at this time.

[0048] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0049] It should be noted that the standard parts used in the present invention can all be purchased from the market, special-shaped parts can be customized according to the instructions and drawings, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the inventor will not elaborate here.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A sealing and cutting knife for a heat shrinkable film roll packaging machine, comprising a knife holder (1), characterized in that: The knife seat (1) is provided with a mounting groove (2) inside, a threading hole (4) inside, and the threading hole (4) is communicated with the mounting groove (2), a heating component (3) is arranged inside the mounting groove (2), four storage grooves (5) are arranged inside the knife seat (1), and a rolling mechanism (6) is arranged inside each of the four storage grooves (5), a cutting knife (7) is slidably connected to the inner wall of the mounting groove (2), and a limiting mechanism (9) is arranged inside the cutting knife (7), two sealing knives (10) are fixedly installed at the bottom of the knife seat (1), a placement groove (11) is arranged on the top of the cutting knife (7), and two limiting slots (12) are arranged on the inner wall of the mounting groove (2).

2. The sealing and cutting knife for a heat shrinkable film roll packaging machine according to claim 1, characterized in that: The heating component (3) comprises a storage battery (301) fixedly mounted on the inner wall of the mounting groove (2); the input end of the storage battery (301) is electrically connected to a charging line (302); the output end of the storage battery (301) is electrically connected to a power supply line (303); one end of the power supply line (303) away from the storage battery (301) is electrically connected to a ceramic heater (304); the top of the ceramic heater (304) is fixedly connected to the inner wall of the mounting groove (2), and the ceramic heater (304) slides with the placement groove (11).

3. The sealing and cutting knife for a heat shrinkable film roll packaging machine according to claim 1, characterized in that: The rolling mechanism (6) comprises a guide rod (601) slidably connected to the inner wall of the storage groove (5); one end of the guide rod (601) is fixedly connected to a limiting plate (602), and the outer surface of the limiting plate (602) slides with the inner wall of the storage groove (5).

4. The sealing and cutting knife for a heat shrinkable film roll packaging machine according to claim 3, characterized in that: One end of the guide rod (601) away from the limiting plate (602) is fixedly connected to a wheel frame (603), the inner wall of the wheel frame (603) is rotatably connected to a rotating shaft (604), and the outer surface of the rotating shaft (604) is fixedly connected to a wheel (606).

5. The sealing and cutting knife for a heat shrinkable film roll packaging machine according to claim 3, characterized in that: The top of the limiting plate (602) is fixedly connected to an elastic member 1 (605), and one end of the elastic member 1 (605) away from the limiting plate (602) is fixedly connected to the inner wall of the storage groove (5).

6. The sealing and cutting knife for a heat shrinkable film roll packaging machine according to claim 1, characterized in that: The limiting mechanism (9) comprises a mounting plate (901) fixedly connected to the inner wall of the movable groove (8); a buckle groove (902) is provided on the outer surface of the mounting plate (901); a guide cylinder (903) is fixedly connected to the inner wall of the mounting plate (901); and one end of the guide cylinder (903) away from the mounting plate (901) is fixedly connected to the inner wall of the movable groove (8).

7. The sealing and cutting knife for a heat shrinkable film roll packaging machine according to claim 6, characterized in that: The inner wall of the guide cylinder (903) is provided with a limit slide groove (904), and the limit slide groove (904) extends to the outer surface of the guide cylinder (903); the inner wall of the guide cylinder (903) is slidably connected to a limit plug rod (905), and the limit plug rod (905) is inserted into the inside of the limit slot (12); the outer surface of the limit slide groove (904) is fixedly connected with a movable plate (906), and the movable plate (906) slides with the limit slide groove (904); the outer surface of the movable plate (906) is provided with a second buckle groove (907).

8. The sealing and cutting knife for a heat shrinkable film roll packaging machine according to claim 7, characterized in that: The outer surface of the guide cylinder (903) is sleeved with an elastic member 2 (908), one end of the elastic member 2 (908) is fixedly connected to the outer surface of the mounting plate (901), and the other end of the elastic member 2 (908) is fixedly connected to the outer surface of the moving plate (906).

Images