Cutting unit of a thermoforming vacuum packaging machine and thermoforming vacuum packaging machine including the same

Abstract

The present invention aims to provide a cutter for a thermoforming vacuum packaging machine, comprising a body portion and a blade portion formed at one end of the body portion, wherein the blade portion comprises a first blade and a second blade having different shapes.

Description

Technology Field

[0001] The present invention relates to a cutting part of a thermoforming vacuum packaging machine and a thermoforming vacuum packaging machine including the same. Background Technology

[0002] A thermoforming vacuum packaging machine is a continuous packaging facility that generally supplies a roll-shaped lower thermoforming film with constant tension, softens it at a high temperature, forms it into a three-dimensional shape using a mold, fills the formed pocket with a product, covers it with an upper film, and seals it under vacuum or gas exchange conditions. Finally, the packaged product undergoes a cutting process to be cut into individual units and discharged to the outside.

[0003] These devices are primarily used for packaging fresh foods such as meat, fish, processed foods, dairy products, and side dishes. Additionally, they are widely used for packaging various products requiring preservation and airtightness, such as pharmaceuticals, medical kits, and electronic components. In particular, the thermoforming method offers significant advantages in terms of cost reduction and improved production efficiency, as it allows for simultaneous tray forming and sealing using a single film without the need to manufacture packaging containers separately.

[0004] Meanwhile, in the case of a conventional product manufactured by a thermoforming vacuum packaging machine, a portion of the bonding film is formed in an unbonded state, and the user is configured to open the product by holding the bottom film (TF) with one hand and the top film (TF) with the other hand, as shown in FIG. 13, and pulling the bottom film (BF) and the top film (TF) in different directions to separate the bonded bottom film and top film.

[0005] However, in the case of conventional products, since the bonding strength between the bottom film (BF) and the top film (TF) is very strong, problems such as requiring a lot of force for the user to open the product in the manner described above occurred. Prior art literature

[0006] Korean Patent Publication No. 10-2017-0129415 (Published Nov. 27, 2017) The problem to be solved

[0007] Accordingly, the present invention has been devised from the aforementioned background and aims to provide a cutting part of a thermoforming vacuum packaging machine and a thermoforming vacuum packaging machine including the same, which is configured to cut the bonding film of a product to be manufactured using a cutter having blades of different shapes, thereby forming a cutting groove in the finished product to facilitate opening the product.

[0008] The objectives of the present invention are not limited thereto, and other unmentioned objectives will be clearly understood by a person skilled in the art from the description below. means of solving the problem

[0009] To achieve this objective, one embodiment of the present invention provides a cutter for a thermoforming vacuum packaging machine, comprising a body portion and a blade portion formed at one end of the body portion, wherein the blade portion comprises a first blade and a second blade having different shapes.

[0010] In addition, the length of the first blade and the length of the second blade are formed differently from each other, wherein the length of the second blade is formed to be greater than the length of the first blade, thereby providing a cutter for a thermoforming vacuum packaging machine.

[0011] Additionally, the first blade comprises a pair of first blade surfaces, and the second blade comprises a pair of second blade surfaces, wherein the blade surface inclination angle of the pair of first blade surfaces and the blade surface inclination angle of the pair of second blade surfaces are formed differently from each other, and the blade surface inclination angle of the pair of second blade surfaces is formed to be smaller than the blade surface inclination angle of the pair of first blade surfaces. A cutter for a thermoforming vacuum packaging machine is provided.

[0012] Additionally, the first blade comprises a pair of first blade sides and the second blade comprises a pair of second blade sides, wherein the tip angle of the first blade, which is the angle between the pair of first blade sides, and the tip angle of the second blade, which is the angle between the pair of second blade sides, are formed differently from each other, and the tip angle of the second blade is formed to be smaller than the tip angle of the first blade.

[0013] Additionally, the first blade includes a first edge and the second blade includes a second edge, wherein the edge endpoint distance of the first edge of the first blade and the edge endpoint distance of the second edge of the second blade are formed differently from each other, and the edge endpoint distance of the second edge of the second blade is formed to be larger than the edge endpoint distance of the first edge of the first blade. Effects of the invention

[0014] According to one embodiment of the present invention, the bonding film of a product to be manufactured can be cut using a cutter having blades of different shapes, thereby making the cutting process of the bonding film of the product to be manufactured easier. In addition, by forming a cutting groove that facilitates opening the product in the finished product manufactured using a cutter having blades of different shapes, there is an effect of enabling a user to open the finished product more easily through the cutting groove. Brief explanation of the drawing

[0015] FIGS. 1 and 2 are drawings showing the overall configuration of a thermoforming vacuum packaging machine according to exemplary embodiments. FIG. 3 is a block diagram showing the detailed configuration of a thermoforming vacuum packaging machine according to exemplary embodiments. FIGS. 4 and 5 are drawings showing the overall configuration of the cutting portion of a thermoformed vacuum packaging (a device) according to exemplary embodiments. FIG. 6 is a drawing showing the overall configuration of a cutter of a thermoforming vacuum packaging machine according to exemplary embodiments. FIG. 7 is a drawing showing the detailed configuration of the first blade and the second blade of the cutter of a thermoforming vacuum packaging machine according to exemplary embodiments. FIG. 8 is a drawing showing the detailed shapes of the first blade and the second blade of the cutter of a thermoforming vacuum packaging machine according to exemplary embodiments. FIGS. 9 to 11 are drawings illustrating the process of cutting the bonding film of a pre-finished product through the cutter part of a thermoforming vacuum packaging machine according to exemplary embodiments. FIG. 12 is a drawing showing a finished product manufactured by a thermoforming vacuum packaging machine according to exemplary embodiments. Figure 13 is a drawing showing the opening of a finished product manufactured by a conventional thermoforming vacuum packaging machine. Specific details for implementing the invention

[0016] Hereinafter, some embodiments of the present invention will be described in detail with reference to the exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions could obscure the essence of the invention, such detailed description is omitted.

[0017] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the present invention. These terms are intended only to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by the terms. Where it is stated that a component is "connected," "combined," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but that another component may also be "connected," "combined," or "connected" between each component.

[0018] In describing the present invention, orientations or positional relationships indicated by terms such as "up and down" and "left and right" are based on the orientations or positional relationships illustrated in each drawing and are intended merely to facilitate the explanation of the invention and to simplify the description; they are not intended to indicate or imply that the indicated device or component necessarily possesses a specific orientation, a specific orientation structure, or an operation, and therefore should not be understood as a limitation on the present invention.

[0019] That is, in describing each component of the present invention, terms relating to orientation or positional relationships, such as "up and down" and "left and right," may be interpreted not only in accordance with the orientation and position according to the arrangement state of each component of the present invention illustrated in each drawing, but also in accordance with the orientation and position according to the arrangement state of each component of the present invention during use or operation.

[0020] Meanwhile, in describing the present invention, 'first direction' may refer to the x-direction on each drawing, 'second direction' may refer to the y-direction on each drawing, and 'third direction' may refer to the z-direction on each drawing. For example, the second direction may be a direction orthogonal to the first direction, and the third direction may be a direction orthogonal to each of the first direction and the second direction. However, the first direction, the second direction, and the third direction do not necessarily mean only directions that are orthogonal to each other, and the first direction, the second direction, and the third direction may refer to directions that form a predetermined angle other than a right angle to each other.

[0021] In describing the present invention, the orientation or positional relationship indicated by "first direction (x)," "second direction (y)," and "third direction (z)," etc., is based on the orientation or positional relationship illustrated in each drawing and is intended only to facilitate the explanation of the invention and to simplify the description; it is not intended to indicate or imply that the indicated device or part necessarily possesses a specific orientation, a specific orientation structure, and an operation, and therefore should not be understood as a limitation on the present invention.

[0022] That is, in describing each configuration of the present invention, terms relating to orientation or positional relationships, such as "first direction (x)," "second direction (y)," and "third direction (z)," may be interpreted not only in accordance with the orientation and position according to the arrangement state of each configuration of the present invention illustrated in each drawing, but also in accordance with the orientation and position according to the arrangement state of each configuration of the present invention during use or operation.

[0023] Embodiments of the present invention are described below with reference to the attached drawings so that those skilled in the art can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0024] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0025] The thermoforming vacuum packaging machine according to the present invention is an automated device that manufactures a finished product by heating and softening a plastic film, forming it into a desired shape using a mold to create a product receiving space, placing an object to be packaged into the formed product receiving space, covering it with an upper film, and sealing it under a vacuum. Such a thermoforming vacuum packaging machine is widely utilized primarily in the food industry and can be used for vacuum or gas exchange packaging to maintain the freshness of meat, seafood, processed foods, cheese, side dishes, etc., and to extend their shelf life and preservation.

[0026] The thermoforming vacuum packaging machine according to the present invention may include a lower film supply unit (10), a forming unit (20), a packaging object loading unit (30), an upper film supply unit (40), a printing unit (50), a sealing unit (60), a cutting unit (70), a longitudinal cutting unit (80), and a finished product discharge unit (90).

[0027] Furthermore, the thermoforming vacuum packaging machine according to the present invention is characterized in that the cutting part (70) comprises a cutter consisting of a first blade and a second blade having different shapes, and the edges of the finished product (BP), in which the lower film and the upper film are fused together, are cut through the cutting part (70) to finally produce a finished product, thereby making it easier for the user to open the finished product.

[0028] Hereinafter, with reference to FIGS. 1 to 11, each component of a thermoforming vacuum packaging machine and the combination relationship of each component according to exemplary embodiments of the present invention will be described in detail.

[0029] FIGS. 1 and 2 are drawings showing the overall configuration of a thermoforming vacuum packaging machine according to exemplary embodiments. FIG. 3 is a block diagram showing the detailed configuration of a thermoforming vacuum packaging machine according to exemplary embodiments.

[0030] Referring to FIGS. 1 to 3, first, the lower film supply unit (10) is a pretreatment module of a thermoforming vacuum packaging machine according to the present invention and may be provided to supply a lower film (BF) in the form of a continuous roll and to transport the lower film (BF) to the forming unit (20) described later while maintaining a constant tension and alignment state. Such a lower film supply unit (10) may include various parts and devices for preventing wrinkles, maintaining alignment, adjusting tension, and detecting the presence or absence of film during the transport of the lower film (BF).

[0031] Here, the bottom film (BF) used in the present invention is a multilayer film for packaging made of a thermoplastic material and has a structure that can be formed into a desired pocket or container shape through a thermoforming process. The bottom film (BF) serves as a main receiving structure for holding a packaged object (F), and requires mechanical strength, moldability, sealing suitability, water resistance, and hygiene, and can be supplied in a continuous roll form.

[0032] In one embodiment, the lower film (BF) may be manufactured by a multilayer co-extrusion method of three layers or five layers or more, and may be configured to include an outer layer, a barrier layer, and a sealant layer.

[0033] For example, the outer layer may be composed of high-rigidity or printable materials such as PET or PA to ensure scratch resistance and appearance quality. Additionally, the middle layer may be composed of materials such as EVOH or PA to provide functions such as oxygen barrier. Furthermore, the inner layer is a layer that adheres to the upper film (TF) described later and may be composed of materials such as PE, LLDPE, or EVA.

[0034] Each layer of such a lower film (BF) is laminated to a precise thickness through melt extrusion and laminating processes, and UV blocking, translucent, and color coating functions may be added as needed.

[0035] Meanwhile, as shown in FIG. 3, in one embodiment, the lower film supply unit (10) may include a film roll mounting shaft (11), a brake device (12), a tension control device (13), a guide roller (14), and a film detection sensor (15).

[0036] First, the film roll mounting shaft (11) may be rotatably provided while mounting a roll wound with a lower film (BF). For example, the film roll mounting shaft (11) may include a clamping device capable of fixing the lower film roll, and may also be configured to minimize eccentricity in the film transport direction when mounting the lower film roll by providing an automatic center alignment function or a rotation torque control motor.

[0037] Next, the brake device (12) can be connected to the film roll mounting shaft (11) and can perform the function of preventing the lower film roll from being excessively unwound or loosened. For example, the brake device (12) may include a magnetic powder brake or a pneumatic brake and may be configured to control the braking torque in real time according to a preset tension value in conjunction with a controller (not shown).

[0038] Next, the tension control device (13) is a device for continuously monitoring and correcting the tension of the lower film (BF), and for example, the tension control device (13) may be composed of a control module including a load cell, a tension sensor, and a PID algorithm. The tension control device (13) may function to prevent rupture of the lower film (BF) and maintain a uniform transport speed, and may be configured to operate with a tension setting value according to the thickness of the lower film (BF) to be worked on so that work on lower films (BF) of various thicknesses is possible.

[0039] Next, the guide roller (14) is positioned on the transport path of the lower film (BF) and may be provided to prevent wrinkling of the lower film (BF) and stabilize the trajectory. For example, a plurality of guide rollers (13) may be provided on the path through which the lower film (BF) moves.

[0040] Next, the film detection sensor (15) may be provided to detect whether the lower film (BF) is present or the roll end status of the lower film (BF). For example, the film detection sensor (15) may be provided as a light sensor or a proximity sensor, and may be provided to transmit a signal of termination to a controller to automatically stop the line or generate a warning alarm when the lower film (BF) is not present or when the roll has ended.

[0041] Next, the forming part (20) may be provided to soften the lower film (BF) by heating, and to form the lower film (BF) into a three-dimensional pocket shape by a mold while the lower film (BF) is in a softened state.

[0042] In one embodiment, as shown in FIG. 3, the forming unit (20) may include a forming heater device (21), upper and lower forming molds (22), a vacuum generating device (23), an air injection device (24), and a mold cooling device (25).

[0043] First, the molding heater device (21) may be provided to heat the lower film (BF) so that it is softened to a certain temperature before the lower film (BF) reaches the molding position. For example, the molding heater device (21) may include an infrared heater (IR Heater) or a ceramic heater positioned in the up-and-down direction, and depending on the type and thickness of the lower film (BF), 80 It can be controlled to operate within the range of ℃.

[0044] Next, the molding mold (22) may be configured to form a lower film (BF), softened by the molding heater device (21), into a pocket shape and may include a lower mold and an upper mold. The lower mold may be formed into a cavity structure that determines the thermoforming shape of the lower film (BF), and the upper mold may be configured to perform an air injection or auxiliary vacuum forming function. The lower mold and the upper mold may be made of aluminum alloy, chrome-plated steel, or copper alloy, and may be configured with a cooling channel built inside to induce rapid fixation after molding.

[0045] Next, the vacuum generating device (23) may be provided in the lower mold of the molding mold (22) and may be provided to perform the function of adhering the lower film (BF) to the lower mold. For example, a plurality of vacuum suction holes of the vacuum generating device (23) may be formed in the inner wall of the cavity of the lower mold, and the vacuum generating device (23) may be provided to adher the lower film (BF) to the inner wall of the cavity of the lower mold by sucking air from the space between the inner wall of the cavity of the lower mold and the lower film (BF) through the vacuum suction holes. To this end, the vacuum generating device (23) may include a vacuum pump.

[0046] Next, the air injection device (24) can perform the function of injecting compressed air onto the surface of the lower film (BF) through the upper mold of the molding mold (22) so that the lower film (BF) adheres more precisely to the inner wall of the cavity of the lower mold. The air injection device (24) may be additionally provided when the thickness of the lower film (BF) is large or when a complex shape is to be molded quickly.

[0047] Next, the mold cooling device (25) is configured to quickly fix the shape of the lower film (BF) after molding is complete. For example, the mold cooling device (25) may include a cooling channel disposed inside the molding mold (22), and the mold cooling device (25) may be configured to quickly fix the shape of the lower film (BF) by circulating cooling water or cooling oil through the cooling channel disposed inside the molding mold (22).

[0048] Next, the packaging object loading section (30) may be provided to insert the packaging object (F) into the pocket of the lower film (BF) formed by the aforementioned forming section (20).

[0049] Here, the packaging object (F) into which the pocket of the lower film (BF) is inserted may be food such as meat, seafood, processed food, cheese, side dishes, etc.

[0050] In one embodiment, as illustrated in FIG. 3, the packaging object loading unit (30) may include a transfer conveyor (31), an object alignment device (32), an input device (33), and an inspection device (34).

[0051] First, the transfer conveyor (31) may be configured to perform the function of transporting packaging objects (F) delivered from the outside in an aligned state to the loading section. For example, the transfer conveyor (31) may be configured in a belt, chain, or roller manner. The transfer conveyor (31) may be configured to operate in synchronization with the loading speed and may be configured to automatically detect product spacing, position, and direction and adjust the transfer timing in conjunction with a sensor or vision system.

[0052] Next, the object alignment device (32) may be provided to perform the function of adjusting the direction, spacing, and arrangement state of the packaged object (F) so that the packaged object (F) transported via the conveyor (31) is positioned corresponding to the pocket position of the lower film (BF). For example, the object alignment device (32) may include a guiding rail and a position sensing sensor, etc., to adjust the direction, spacing, and arrangement state of the packaged object (F).

[0053] Next, the input device (33) may be provided to perform the function of inputting the packaged object (F), which is aligned by the object alignment device (32), into the pocket of the lower film (BF). For example, the input device (33) may be provided to input the packaged object (F) into the pocket of the lower film (BF) in a manner such as a belt-type dropper or a fork-type pusher. Additionally, the input device (33) may be provided to input the packaged object (F) into the pocket of the lower film (BF) through an XYZ axis servo-driven robot arm and a vacuum suction device.

[0054] Next, the inspection device (34) may be configured to perform the function of detecting whether the packaged object (F) has been properly inserted into the pocket of the lower film (BF). For example, the inspection device (34) may be configured to include a light sensor, a proximity sensor, a camera, a color analyzer, etc., to inspect in real time for missing products, out-of-placement, contamination, etc., within the pocket of the lower film (FB), and furthermore, may be configured to generate a warning alarm or track the location of the product when a defect is detected.

[0055] Next, the upper film supply unit (40) may be provided to supply an upper film (TF) in the form of a continuous roll and to transport the upper film (TF) to the sealing unit (60) described later while maintaining constant tension and alignment. Such an upper film supply unit (40) may include various parts and devices for preventing wrinkles, maintaining alignment, adjusting tension, and detecting the presence or absence of film during the transport of the upper film (TF).

[0056] Here, the upper film (TF) used in the present invention can perform the function of covering the upper part of the pocket of the lower film (BF) when the pocket of the lower film (BF) receives the object to be packaged (F) by inserting it into the pocket of the lower film (BF). Like the lower film (BF), the upper film (TF) is required to have mechanical strength, moldability, sealing suitability, water resistance, and hygiene, and can be supplied in a continuous roll form.

[0057] In one embodiment, it can be manufactured by a multilayer co-extrusion method of three or five or more layers, and can be configured to include an outer layer, a barrier layer, and a sealant layer.

[0058] For example, the outer layer may be composed of materials such as PET, OPP, and Nylon to be transparent and printable. Additionally, the middle layer may be composed of materials such as EVOH, PA, and AL to provide functions such as oxygen blocking or light blocking. Furthermore, the inner layer is a layer that is heat-bonded to the aforementioned lower film (BF) and may be composed of materials such as PE, EVA, and CPP.

[0059] Each layer of such upper film (TF) is laminated to a precise thickness through melt extrusion and laminating processes, and UV blocking, translucent, and color coating functions may be added as needed.

[0060] Meanwhile, as shown in FIG. 3, in one embodiment, the upper film supply unit (40) may include a film roll mounting shaft (41), a brake device (42), a tension control device (43), a guide roller (44), and a film detection sensor (45).

[0061] First, the film roll mounting shaft (41) may be rotatably provided while mounting the upper film (TF) wound on the roll. For example, the film roll mounting shaft (41) may include a clamping device capable of fixing the upper film roll, and may also be configured to minimize eccentricity in the film transport direction when mounting the upper film roll by providing an automatic center alignment function or a rotation torque control motor.

[0062] Next, the brake device (42) can be connected to the film roll mounting shaft (41) and can perform the function of preventing the upper film roll from being excessively unwound or loosened. For example, the brake device (42) may include a magnetic powder brake or a pneumatic brake and may be configured to control the braking torque in real time according to a preset tension value in conjunction with a controller (not shown).

[0063] Next, the tension control device (43) is a device for continuously monitoring and correcting the tension of the upper film (TF), and for example, the tension control device (43) may be composed of a control module including a load cell, a tension sensor, and a PID algorithm. The tension control device (43) may function to prevent rupture of the lower film (BF) and maintain a uniform transport speed, and may be configured to operate with a tension setting value according to the thickness of the upper film (TF) to be worked on so that work on upper films (TF) of various thicknesses is possible.

[0064] Next, the guide roller (44) is positioned on the transport path of the upper film (TF) and may be provided to prevent wrinkles in the upper film (TF) and stabilize the trajectory. For example, a plurality of guide rollers (43) may be provided on the path through which the upper film (TF) moves.

[0065] Next, the film detection sensor (45) may be provided to detect whether the upper film (TF) is present or the roll end status of the upper film (TF). For example, the film detection sensor (45) may be provided as a light sensor or a proximity sensor, and may be provided to transmit a signal of termination to a controller to automatically stop the line or generate a warning alarm when the upper film (TF) is not present or when the roll has ended.

[0066] Next, the printing unit (50) may be configured to perform the function of printing product-related information on the surface of the upper film (TF) during the transfer process of the upper film (TF).

[0067] For example, the expiration date, manufacturing date, lot number, barcode, brand identifier, etc. of the product can be printed on the upper film (TF) by the printing unit (50).

[0068] In one embodiment, as shown in FIG. 3, the printing unit (50) may include a printer body (51) and a printing position detection device (52).

[0069] First, the printer body (51) may be configured to print product-related information on the upper film (TF). For example, the printer body (51) may be configured to print product-related information on the upper film (TF) using a thermal transfer method (TTO), an inkjet method, a laser marking method, etc. Additionally, the printer body (51) may be installed in a contact or non-contact manner depending on the printing method.

[0070] Next, the print position detection device (52) may be configured to detect a print mark on the upper film (TF) and perform print position synchronization of the printer body (51). In the case where there is no print mark, the print position detection device (52) may be configured to perform position synchronization in conjunction with an encoder pulse based on film transport distance information.

[0071] Next, the sealing part (60) may be provided to perform the function of joining the lower film (BF) and the upper film (TF) while the upper film (TF) is placed over the pocket of the lower film (BF) in which the packaging object (F) is contained. For example, the sealing part (60) may be provided to create a vacuum inside the chamber while the upper film (TF) is placed over the pocket of the lower film (BF) and to seal the lower film (BF) and the upper film (TF) through heat sealing of the lower film (BF) and the upper film (TF).

[0072] In one embodiment, as shown in FIG. 3, the sealing portion (60) may include a vacuum chamber (61), a vacuum device (62), and a sealing plate (63).

[0073] First, the vacuum chamber (61) is a space where a sealing operation is performed on a lower film (BF) and an upper film (TF) containing a packaging object (F), and may include a lower base and an upper chamber. When the upper chamber is closed while the lower film (BF) and the upper film (TF) containing the packaging object (F) are placed on the lower base, the internal space of the vacuum chamber (61) can be sealed. At this time, the vacuum chamber (61) may be equipped to remove air from the internal space or to inject a protective gas into the internal space. The chamber frame also serves to secure the edges of the film.

[0074] Next, the vacuum device (62) may be provided to perform the function of removing air from the internal space of the vacuum chamber (61) to form a vacuum state in the internal space of the vacuum chamber (61). For example, the vacuum device (62) may be provided as a vacuum forming system including a vacuum pump and may be connected to the vacuum chamber (61) to remove air from the internal space of the vacuum chamber (61).

[0075] Next, the sealing plate (63) may be provided in the form of a heat-pressing plate that is placed inside the vacuum chamber (61) and joins the lower film (BF) and the upper film (TF) with high heat and pressure, and the sealing plate (63) may be formed of a metal material such as aluminum. A heater cartridge or a heating element may be embedded inside the sealing plate (63) to apply heat to the lower film (BF) and the upper film (TF), and the sealing plate (63) may also be provided with a temperature sensor to adjust the degree to which heat is applied to the lower film (BF) and the upper film (TF) according to the measurement value of the temperature sensor.

[0076] After the internal space of the vacuum chamber (61) becomes a vacuum state by the aforementioned vacuum device (62), the sealing plate (63) may be configured to operate to bond the lower film (BF) and the upper film (TF), and by bonding the lower film (BF) and the upper film (TF) by the sealing plate (63), the finished product (BP) can be manufactured.

[0077] Next, the cutting section (70) may be provided to cut the unfinished product (BP) discharged from the sealing section (60) in a second direction (y). Here, the first direction (x) refers to the direction in which the unfinished product (BP) is continuously transported, and the second direction (y) may refer to a direction perpendicular to the first direction (x).

[0078] The finished product (BP) discharged from the sealing section (60) is in a continuous state where the bonded lower film (BF) and upper film (TF) (hereinafter, the bonded lower film (BF) and upper film (TF) are referred to as bonded film (GF)) are not cut, and the finished product (BP) can be separated into individual products by cutting the bonded film (GF) by the cutting section (70).

[0079] In one embodiment, as shown in FIG. 4, the cutting unit (70) may include a cutter (100), a cutter sheath (200), a cutter cylinder (300), and a sheath cylinder (400). Each component of the cutting unit (70) will be described in more detail below with reference to FIG. 4 to FIG. 8.

[0080] Next, the longitudinal cutting section (80) may be provided to cut the bonding film (GF) of the pre-finished product (BP) separated by the cutting section (70) in a first direction (x) to form a final finished product (P).

[0081] In one embodiment, as shown in FIG. 3, the longitudinal cutting unit (80) may include a longitudinal cutter (81) and a cutter driving unit (82).

[0082] First, a longitudinal cutter (81) may be provided to cut the bonding film (GF) of the pre-finished product (BP) separated by the cutting section (70) in a first direction (x). For example, the longitudinal cutter (81) may be provided in the form of a straight reciprocating blade, a flying knife, or a rotary disc blade.

[0083] Next, the cutter drive unit (82) may be configured to drive the longitudinal cutter (81). For example, the cutter drive unit (82) may be configured to be driven by a servo motor-based sliding mechanism or a mechanical camshaft drive method depending on the shape of the longitudinal cutter (81).

[0084] Next, the finished product discharge unit (90) may be provided to discharge the finished product (P), in which the bonding film (GF) has been completely cut by the aforementioned cutting unit (70) and longitudinal cutting unit (80), to the outside. The finished product (P) may be transported to an external packaging device, etc., through the finished product discharge unit (90).

[0085] In one embodiment, as shown in FIG. 3, the finished product discharge unit (90) may include a discharge conveyor (91) and an inspection camera (92).

[0086] The discharge conveyor (91) may be provided to perform the function of transporting the manufactured finished product (P) to a packaging device, etc. For example, the discharge conveyor (91) may be provided in a belt, chain, or roller manner, and the inspection camera (92) may be provided to photograph the finished product (P) being transported through the discharge conveyor (91) and to detect defective finished product (P).

[0087] Next, with reference to FIGS. 4 to 11, the detailed configuration and operation method of the cutting part (70) according to exemplary embodiments of the present invention will be described.

[0088] First, with reference to FIGS. 4 and FIGS. 8, the detailed configuration of the cutting section (70) according to exemplary embodiments of the present invention will be described.

[0089] FIGS. 4 and 5 are drawings showing the overall configuration of the cutting part of a thermoforming vacuum packaging machine according to exemplary embodiments, FIG. 6 is a drawing showing the overall configuration of the cutter of a thermoforming vacuum packaging machine according to exemplary embodiments, FIG. 7 is a drawing showing the detailed configuration of the first blade and the second blade of the cutter of a thermoforming vacuum packaging machine according to exemplary embodiments, and FIG. 8 is a drawing showing the detailed shape of the first blade and the second blade of the cutter of a thermoforming vacuum packaging machine according to exemplary embodiments.

[0090] As illustrated in FIGS. 4 and 5, a cutting unit (70) according to exemplary embodiments of the present invention may include a cutter (100), a cutter sheath (200), a cutter driving module (300), and a sheath driving module (400).

[0091] First, the cutter (100) can perform the function of cutting the bonding film (GF) of the aforementioned pre-finished product (BF). In one embodiment, the cutter (100) may be provided to cut the bonding film (GF) formed on the edge of the pre-finished product (BF) in a second direction (y).

[0092] Here, as illustrated in FIG. 5, the cutter (100) may include a body portion (101) and a blade portion (103) formed at one end of the body portion (101).

[0093] In one embodiment, the body portion (101) may be formed as a plate-shaped member having a predetermined length, width, and thickness, and the body portion (101) may also be formed as a metal member. As the body portion (101) is formed as a plate-shaped member, the body portion (101) may include a first surface (101a) and a second surface (101b) positioned opposite the first surface. At this time, the first surface (101a) and the second surface (101b) of the body portion (101) may be positioned parallel to each other.

[0094] At this time, the body part (101) may include a connecting part (1011) and a fastening groove (1012).

[0095] For example, the connecting portion (1011) may be formed at one end in the width direction of the body portion (101), and may be formed in a shape that is recessed by a predetermined length from the end of the body portion (101) toward the center of the body portion (101). Additionally, the connecting portion (1011) may be formed as a pair spaced apart at a predetermined distance along the length direction of the body portion (101).

[0096] The body portion (101) can be mounted to the cutter holder (320) described later through such a coupling portion (1011). For example, the body portion (101) can be mounted to the cutter holder (320) by inserting a seating portion (not shown) formed on the cutter holder (320) into the coupling portion (1011).

[0097] Next, the fastening hole (1012) is formed at one end in the width direction of the body part (101), and may be formed in the shape of a hole that penetrates the body part (101) in the thickness direction. Additionally, the fastening hole (1012) may be formed in a plurality of spaces spaced apart from each other along the length direction of the body part (101).

[0098] The body portion (101) can be mounted to the cutter holder (320) described later through such a fastening hole (1012). For example, the body portion (101) can be fixedly coupled to the cutter holder (320) through a fastening member such as a bolt member. For example, the body portion (101) can be fixedly coupled to the cutter holder (320) by connecting a bolt member through the fastening hole (1012) of the body portion (101) and connecting the end of the bolt member that has passed through the fastening hole (1012) to the cutter holder (320).

[0099] Next, the blade portion (103) may be formed at one end in the width direction of the body portion (101). For example, as described above, when a coupling portion (1011) and a fastening hole (1012) are formed at one end in the width direction of the body portion (101), the blade portion (103) may be formed at one end opposite to the end where the coupling portion (1011) and the fastening hole (1012) are formed, among the two ends in the width direction of the body portion (101).

[0100] Additionally, the blade portion (103) may be formed at one end in the width direction of the body portion (101), but may also be formed along the length direction of the body portion (101). Here, the blade portion (103) may be formed continuously or intermittently along the length direction of the body portion (101). When the blade portion (103) is formed intermittently along the length direction of the body portion (101), the blade portion (103) may be formed only in a portion of each length direction part of one end in the width direction of the body portion (101).

[0101] Here, the blade portion (103) may include a first blade (110) and a second blade (120) having different shapes. For example, the first blade (110) and the second blade (120) may be formed differently in at least one of the length, tip angle, edge bevel angle, blade surface bevel angle, and edge end point distance, and this will be described in detail below.

[0102] In one embodiment, the blade portion (103) may include a plurality of first blades (110) or a plurality of second blades (120). Here, when at least one of the first blades (110) and the second blades (120) is provided in a plurality, the first blades (110) and the second blades (120) may be arranged alternately with each other. Here, the alternating arrangement of the first blades (110) and the second blades (120) may include at least one second blade (120) being placed between two adjacent first blades (110). Additionally, the alternating arrangement of the first blades (110) and the second blades (120) may include at least one first blade (110) being placed between two adjacent second blades (120).

[0103] Hereinafter, the detailed configuration of the first blade (110) and the second blade (120) will be described with reference to FIGS. 6 and FIGS. 8.

[0104] First, the first blade (110) may be formed at one end in the width direction of the body portion (101). Additionally, the first blade (110) may be formed at one end in the width direction of the body portion (101), but multiple blades may be formed along the length direction of the body portion (101). At this time, as described above, a second blade (120) may be formed between two adjacent first blades (110).

[0105] In one embodiment, as shown in FIG. 7, the first blade (110) may include a pair of first blade surfaces (111a, 111b).

[0106] A pair of first blade surfaces (111a, 111b) may be arranged parallel to each other along the width direction of the first blade (110), and at this time, a first edge (111c) may be formed at the part where the pair of first blade surfaces (111a, 111b) come into contact with each other.

[0107] At this time, each of the pair of first blade surfaces (111a, 111b) may be arranged to be inclined downward toward the center of the body portion (101) along the thickness direction of the body portion (101) as it moves away from the first edge (111c), with respect to the first edge (111c). For example, each of the pair of first blade surfaces (111a, 111b) may be arranged to be inclined at a predetermined angle with respect to a virtual reference plane (A) extending from the first surface (101a) or the second surface (101b) of the body portion (101).

[0108] Here, as described above, since the first surface (101a) and the second surface (101b) of the body part (101) can be arranged parallel to each other, the angle formed by each of the pair of first blade surfaces (111a, 111b) with the reference plane (A) extending from the first surface (101a) of the body part (101) and the angle formed by each of the pair of first blade surfaces (111a, 111b) with the reference plane (A) extending from the second surface (101b) of the body part (101) can be the same.

[0109] Accordingly, the reference plane (A) may mean a virtual plane extending from the first plane (101a) of the body part (101) or a virtual plane extending from the second plane (101b) of the body part (101).

[0110] Hereinafter, the angle formed by each of the pair of first blade surfaces (111a, 111b) with the reference plane (A) extending from the first surface (101a) of the body part (101) will be referred to as the blade surface inclination angle (M1).

[0111] For example, the blade surface inclination angle (M1) of one of the pair of first blade surfaces (111a, 111b) may mean the angle formed by one of the first blade surfaces (111a) and the reference plane (A). Additionally, the blade surface inclination angle (M1) of the other of the pair of first blade surfaces (111a, 111b) may mean the angle formed by the other of the first blade surfaces (111b) and the reference plane (A).

[0112] At this time, the blade surface inclination angle (M1) of one first blade surface (111a) and the blade surface inclination angle (M1) of the other first blade surface (111b) can be formed to be the same. That is, a pair of first blade surfaces (111a, 111b) can be arranged symmetrically with respect to the first edge (111c).

[0113] Additionally, the area of ​​one of the first blade surfaces (111a, 111b) and the area of ​​the other first blade surface (111b) can be formed to be equal to each other.

[0114] In one embodiment, as illustrated in FIG. 7, the first blade (110) may include a pair of first blade edges (112a, 112b). For example, a pair of first blade edges (112a, 112b) may be formed at the ends of each of the aforementioned pair of first blade surfaces (111a, 111b).

[0115] A pair of first blade sides (112a, 112b) may be arranged parallel to each other along the width direction of the first blade (110), and at this time, a first vertex (113) may be formed at the part where the end portion of each of the pair of first blade sides (112a, 112b) meets the end portion of the first corner (111c).

[0116] At this time, each of the pair of first blade edges (112a, 112b) can be arranged to slope downward along the width direction of the body part (101) as it moves away from the first edge (111c), with respect to the first edge (111c). That is, each of the pair of first blade edges (112a, 112b) can be arranged to slope in a direction that moves closer to the center of the body part (101) along the width direction of the body part (101) as it moves away from the first edge (111c). Accordingly, the pair of first blade edges (112a, 112b) can be formed in an overall pointed shape.

[0117] At this time, each of the pair of first blade edges (112a, 112b) may be arranged with a predetermined angle of inclination. Hereinafter, the angle formed by each of the pair of first blade edges (112a, 112b) with a virtual reference line (S) extending in the width direction of the blade portion (103) will be referred to as the blade edge angle of inclination (N1).

[0118] Specifically, the blade edge inclination angle (N1) of one of the pair of first blade edges (112a, 112b) may mean the angle formed by one of the first blade edges (112a) and the reference line (S). Additionally, the blade edge inclination angle (N1) of the other of the pair of first blade edges (112a, 112b) may mean the angle formed by the other of the first blade edges (112b) and the reference line (S).

[0119] At this time, the blade edge inclination angle (N1) of one first blade edge (112a) and the blade edge inclination angle (N1) of the other first blade edge (112b) can be formed to be identical to each other. That is, a pair of first blade edges (112a, 112b) can be arranged symmetrically with respect to the first edge (111c).

[0120] Additionally, the length of one of the first blade sides (112a, 112b) and the length of the other first blade side (112b) can be formed to be equal to each other.

[0121] Meanwhile, the second edge (111c) can be positioned so as to be inclined downward along the thickness direction of the body part (101) as it approaches the first vertex (113) with respect to the first vertex (113). That is, the first edge (111c) can be positioned so as to be inclined in a direction that approaches the center of the body part (101) along the thickness direction of the body part (101) as it approaches the first vertex (113). Accordingly, the first blade (110) can be formed in an overall pointed shape.

[0122] At this time, the first edge (111c) may be positioned with a predetermined angle of inclination. For example, the first edge (111c) may be positioned at a predetermined angle with respect to a reference plane (A) extending from the first surface (101a) of the body part (101).

[0123] Hereinafter, as illustrated in FIG. 8, the angle formed by the first corner (111c) with the reference plane (A) extending from the first surface (101a) of the body part (101) will be referred to as the corner inclination angle (V1).

[0124] Next, the first blade (110) is formed at one end in the width direction of the body part (101), and the first blade (110) may have a predetermined length (L1) and a predetermined tip angle (G1).

[0125] Here, the length (L1) of the first blade (110) may mean the length from a virtual reference line (U) arranged along the length direction of the body part (101) to the first vertex (113).

[0126] Additionally, the tip angle (G1) of the first blade (110) may refer to the angle formed by a pair of first blade sides (112a, 112b).

[0127] Meanwhile, as shown in FIG. 7, the end point (114) of the first corner (111c) may be spaced apart from the reference line (U) by a predetermined distance, and below, the distance between the end point (114) of the first corner (111c) and the reference line (U) will be referred to as the corner end point distance (d1).

[0128] Here, the length (L1) of the first blade (110) described above, the tip angle (G1) of the first blade (110), the blade surface inclination angle (M1) of a pair of first blade surfaces (111a, 111b), the edge inclination angle (V1) of the first edge (111c), and the edge end point distance (d1) of the first edge (111c) may each be formed differently from the second blade (120) described later, and this will be explained in detail below.

[0129] Next, the second blade (120) may be formed at one end of the body portion (101) in the width direction, similar to the first blade (110) described above. Additionally, the second blade (120) may be formed at one end of the body portion (101) in the width direction, but multiple blades may be formed along the length direction of the body portion (101). At this time, as described above, multiple first blades (110) and multiple second blades (120) may be arranged alternately with each other, and accordingly, each second blade (120) may be formed between two adjacent first blades (120).

[0130] In one embodiment, as shown in FIG. 7, the second blade (120) may include a pair of second blade surfaces (121a, 121b).

[0131] A pair of second blade surfaces (121a, 121b) may be arranged parallel to each other along the width direction of the second blade (120), and a second edge (121c) may be formed at the part where the pair of second blade surfaces (121a, 121b) come into contact with each other.

[0132] At this time, each of the pair of second blade surfaces (121a, 121b) may be arranged to be inclined downward toward the center of the body portion (101) along the thickness direction of the body portion (101) as it moves away from the second edge (121c), with respect to the second edge (121c). For example, each of the pair of second blade surfaces (121a, 121b) may be arranged to be inclined at a predetermined angle with respect to the reference plane (A).

[0133] Here, just like the aforementioned pair of first blade surfaces (111a, 111b), the angle formed by each of the pair of second blade surfaces (121a, 121b) with the reference plane (A) extending from the first surface (101a) of the body part (101) is to be called the blade surface inclination angle (M2).

[0134] For example, the blade surface inclination angle (M2) of one of the pair of second blade surfaces (121a, 121b) may mean the angle formed by one of the second blade surfaces (121a) and the reference plane (A). Additionally, the blade surface inclination angle (M2) of the other of the pair of second blade surfaces (121b) may mean the angle formed by the other of the second blade surfaces (121b) and the reference plane (A).

[0135] At this time, the blade surface inclination angle (M2) of one second blade surface (121a) and the blade surface inclination angle (M2) of the other second blade surface (121b) can be formed to be the same. That is, a pair of second blade surfaces (121a, 121b) can be arranged symmetrically with respect to the second edge (121c).

[0136] Additionally, the area of ​​one of the pair of second blade surfaces (121a, 121b) and the area of ​​the other second blade surface (121b) can be formed to be equal to each other.

[0137] In one embodiment, as illustrated in FIG. 7, the second blade (120) may include a pair of second blade edges (122a, 122b). For example, a pair of second blade edges (122a, 122b) may be formed at the ends of each of the aforementioned pair of second blade surfaces (121a, 121b).

[0138] A pair of second blade edges (122a, 122b) may be arranged parallel to each other along the width direction of the second blade (120), and a second vertex (123) may be formed at the part where the end portion of each of the pair of second blade edges (122a, 122b) meets the end portion of the second edge (121c).

[0139] At this time, each of the pair of second blade edges (122a, 122b) can be arranged to slope downward along the width direction of the body part (101) as it moves away from the second edge (121c), with respect to the second edge (121c). That is, each of the pair of second blade edges (122a, 122b) can be arranged to slope in a direction that moves closer to the center of the body part (101) along the width direction of the body part (101) as it moves away from the second edge (121c). Accordingly, the pair of second blade edges (122a, 122b) can be formed in an overall pointed shape.

[0140] At this time, each of the pair of second blade sides (122a, 122b) may be arranged with a predetermined angle of inclination. Here, just like the aforementioned pair of first blade sides (112a, 112b), the angle formed by each of the pair of second blade sides (122a, 122b) with a virtual reference line (S) extending in the width direction of the blade portion (103) is to be called the blade side angle of inclination (N2).

[0141] Specifically, the blade edge inclination angle (N2) of one of the pair of second blade edges (122a, 122b) may mean the angle formed by one of the second blade edges (122a) and the reference line (S). Additionally, the blade edge inclination angle (N2) of the other of the pair of second blade edges (122a, 122b) may mean the angle formed by the other of the second blade edges (122b) and the reference line (S).

[0142] At this time, the blade edge inclination angle of one of the second blade edges (122a) and the blade edge inclination angle of the other second blade edge (122b) can be formed to be the same as each other. That is, a pair of second blade edges (122a, 122b) can be arranged symmetrically with respect to the second edge (121c).

[0143] Additionally, the length of one of the second blade sides (122a, 122b) and the length of the other second blade side (122b) can be formed to be equal to each other.

[0144] Meanwhile, the second edge (121c) can be positioned to slope downward along the thickness direction of the body part (101) as it approaches the second vertex (123) with respect to the second vertex (123). That is, the second edge (121c) can be positioned to slope in a direction that approaches the center of the body part (101) along the thickness direction of the body part (101) as it approaches the second vertex (123). Accordingly, the second blade (120) can be formed in a pointed shape overall.

[0145] At this time, the second corner (121c) may be positioned with a predetermined angle of inclination. For example, the second corner (121c) may be positioned at a predetermined angle with respect to a reference plane (A) extending from the first surface (101a) of the body part (101).

[0146] Hereinafter, the angle formed by the second corner (121c) with the reference plane (A) extending from the first surface (101a) of the body part (101), as shown in FIG. 8, will be referred to as the corner inclination angle (V2).

[0147] Next, the second blade (120) is formed at one end of the width direction of the body part (101), and the second blade (120) may have a predetermined length (L2) and a predetermined tip angle (G2).

[0148] Here, the length (L2) of the second blade (120) may mean the length from a virtual reference line (U) arranged along the length direction of the body part (101) to the second vertex (123).

[0149] Additionally, the tip angle (G2) of the second blade (120) may refer to the angle formed by a pair of second blade sides (122a, 122b).

[0150] Meanwhile, as shown in FIG. 7, the end point (124) of the second corner (121c) may be positioned at a predetermined distance from the reference line (U), and below, the distance between the end point (124) of the second corner (121c) and the reference line (U) will be referred to as the corner end point distance (d2).

[0151] Here, the length (L2) of the second blade (120) described above, the tip angle (G2) of the second blade (120), the blade surface inclination angle (M2) of a pair of second blade surfaces (121a, 121b), the edge inclination angle (V2) of the second edge (121c), and the edge end point distance (d2) of the second edge (121c) may each be formed differently from the first blade (110) described above, and this will be explained in detail below.

[0152] Next, the shapes of the first blade (110) and the second blade (120) are compared and explained.

[0153] In one embodiment, the length (L1) of the first blade (110) and the length (L2) of the second blade (120) may be formed differently from each other. For example, the length (L2) of the second blade (120) may be formed to be larger than the length (L1) of the first blade (110).

[0154] Additionally, the tip angle (G1) of the first blade (110) and the tip angle (G2) of the second blade (120) may be formed differently from each other. For example, the tip angle (G2) of the second blade (120) may be formed smaller than the tip angle (G2) of the first blade (110).

[0155] Additionally, the blade surface inclination angle (M1) of a pair of first blade surfaces (111a, 111b) of the first blade (110) and the blade surface inclination angle (M2) of a pair of second blade surfaces (121a, 121b) of the second blade (120) may be formed differently from each other. For example, the blade surface inclination angle (M2) of a pair of second blade surfaces (121a, 121b) of the second blade (120) may be formed to be larger than the blade surface inclination angle (M1) of a pair of first blade surfaces (111a, 111b) of the first blade (110).

[0156] Additionally, the corner angle of inclination (V1) of the first edge (111c) of the first blade (110) and the corner angle of inclination (V2) of the second edge (121c) of the second blade (120) may be formed differently from each other. For example, the corner angle of inclination (V2) of the second edge (121c) of the second blade (120) may be formed larger than the corner angle of inclination (V1) of the first edge (111c) of the first blade (110). However, the corner angle of inclination (V2) of the second edge (121c) of the second blade (120) and the corner angle of inclination (V1) of the first edge (111c) of the first blade (110) may be formed identically to each other.

[0157] Additionally, the edge endpoint distance (d1) of the first edge (111c) of the first blade (110) and the edge endpoint distance (d2) of the second edge (121c) of the second blade (120) may be formed differently from each other. For example, the edge endpoint distance (d2) of the second edge (121c) of the second blade (120) may be formed larger than the edge endpoint distance (d1) of the first edge (111c) of the first blade (110).

[0158] Due to the difference in shape between the first blade (110) and the second blade, the process of cutting the bonding film (GF) of the pre-finished product (BF) through the cutter (100) can be made easier, and also due to the difference in shape between the first blade (110) and the second blade, an incision groove can be formed in the finished product (P) to facilitate opening of the finished product (P), and this will be explained in detail below.

[0159] Next, as illustrated in FIGS. 4 and 5, the cutter (100) described above may be configured to move linearly back and forth through a cutter drive module (300).

[0160] The cutter drive module (300) may be configured to reciprocate the cutter (100) linearly, and in one embodiment, the cutter drive module (300) may include a cutter cylinder (310) and a cutter holder (320).

[0161] For example, the cutter cylinder (310) may include a cylinder body (311) and a piston rod (313) configured to reciprocate while being inserted into and withdrawn from the cylinder body (311).

[0162] At this time, the cutter (100) may be coupled to the end of the piston rod (313) of the cutter cylinder (300) and configured to move linearly along the width direction of the cutter (100) according to the reciprocating motion of the piston rod (313).

[0163] At this time, the cutter (100) can be coupled to the cutter cylinder (300) through the cutter holder (320). For example, the cutter (100) can be indirectly coupled to the piston rod (313) by being coupled to the cutter holder (320) coupled to the piston rod (313).

[0164] As described above, a coupling portion (1011) and a fastening groove (1012) may be formed in the body portion (101) of the cutter (100), and the cutter (100) may be coupled to the cutter holder (320) through the coupling portion (1011) and the fastening groove (1012) formed in the body portion (101). For example, the body portion (101) may be seated in the cutter holder (320) by inserting a seating portion (not shown) formed in the cutter holder (320) into the coupling portion (1011). Additionally, while the body portion (101) is seated in the cutter holder (320), a bolt member may be coupled through the fastening hole (1012) of the body portion (101), and the end of the bolt member that has passed through the fastening hole (1012) may be coupled to the cutter holder (320), thereby fixing the body portion (101) to the cutter holder (320).

[0165] By being configured in the manner described above, when the piston rod (313) of the cutter cylinder (310) reciprocates, the cutter holder (320) coupled to the piston rod (313) and the cutter (100) coupled to the cutter holder (320) can be provided to reciprocate together as a single unit with the piston rod (313).

[0166] Next, the cutter sheath (200) may be positioned opposite the aforementioned cutter (100) and configured to accommodate at least a portion of the reciprocating cutter (100).

[0167] Here, as illustrated in FIGS. 4 and 5, the cutter sheath (200) may include a sheath body (201), a cutter receiving portion (210) formed along the longitudinal direction of the sheath body (201), and a pair of film support portions (220a, 220b).

[0168] First, the sheath body (201) may be provided as a member having a predetermined length, and the sheath body (201) may be extended along the same direction as the direction in which the cutter (100) is extended.

[0169] Next, the cutter receiving portion (210) may be formed along the longitudinal direction of the sheath body (201). In one embodiment, the cutter receiving portion (210) may be formed in a shape that is recessed to a predetermined depth along the height direction of the sheath body (201) from the upper surface of the sheath body (201) toward the center of the sheath body (201).

[0170] The length of the cutter receiving portion (210) can be formed to correspond to the length of the cutter (100), and the width of the cutter receiving portion (210) can be formed to correspond to the thickness of the cutter (100). Additionally, the recessed depth of the cutter receiving portion (210) can be formed to a length capable of accommodating a part of the blade portion (103) and the body portion (101) of the cutter (100).

[0171] In this way, by forming a cutter receiving portion (210) in the sheath body (201), the cutter (100) can be received in the cutter receiving portion (210) when the cutter (100) moves in a direction closer to the cutter sheath (200) by the cutter cylinder (310) or when the cutter sheath (200) moves in a direction closer to the cutter (100) by the sheath cylinder (410) described later.

[0172] Next, a pair of film support members (220a, 220b) may be formed on each side in the width direction of the cutter receiving member (210), and the pair of film support members (220a, 220b) may be formed continuously along the length direction of the sheath body (201). As described below, when the bonding film (GF) of the pre-finished product (BP) is placed between the cutter (100) and the cutter sheath (200) and the cutter (100) is moved in the direction of the bonding film (GF) to cut the bonding film (GF), the lower film (BF) portion of the bonding film (GF) is supported by the pair of film support members (220a, 220b), making the bonding film (GF) cutting operation easier.

[0173] Meanwhile, a support pad (221) may be provided on each of the pair of film support members (220a, 220b). In one embodiment, the support pad (211) may be arranged along the longitudinal direction of the pair of film support members (220a, 220b), and the support pad (211) may be arranged in a form embedded in the upper part of the pair of film support members (220a, 220b), such that the upper surface is exposed to the outside.

[0174] The support pad (211) may be provided with a flexible material, for example, the support pad (211) may be provided with a member such as a rubber material or a silicone material that has flexibility and relatively large frictional force.

[0175] In this way, by providing a support pad (220) on the upper part of a pair of film support members (220a, 220b), the lower film (BF) portion of the bonded film (GF) can be more stably supported by the support pad (220) of the pair of film support members (220a, 220b).

[0176] Next, as illustrated in FIGS. 4 and 5, the cutter sheath (200) described above may be configured to move linearly back and forth through a sheath drive module (400).

[0177] The sheath drive module (400) may be configured to linearly reciprocate the cutter sheath (200), and in one embodiment, the sheath drive module (400) may include a sheath cylinder (410), a sheath supporter (420), and an elastic body (430).

[0178] For example, the sheath cylinder (410) may include a cylinder body (411) and a piston rod (413) configured to reciprocate while being drawn in and out of the cylinder body (411).

[0179] At this time, the cutter sheath (200) may be coupled to the end of the piston rod (413) of the sheath cylinder (410) and configured to move linearly along the width direction of the cutter sheath (200) according to the reciprocating motion of the piston rod (413).

[0180] At this time, the cutter sheath (200) can be coupled to the sheath cylinder (410) through the sheath supporter (420). For example, the cutter sheath (200) can be indirectly coupled to the piston rod (413) by being coupled to the sheath supporter (420) coupled to the piston rod (413).

[0181] Here, the sheath supporter (420) may have a sheath seating space (421) formed inside. For example, the sheath seating space (421) may be formed along the length direction of the sheath supporter (420), and the sheath seating space (421) may also be formed with an open top.

[0182] At this time, the cutter sheath (200) can be coupled to the sheath supporter (420) in a manner that is inserted into the sheath seating space (421).

[0183] By being configured in the manner described above, when the piston rod (413) of the sheath cylinder (410) reciprocates, the sheath supporter (420) coupled to the piston rod (413) and the cutter sheath (200) coupled to the sheath supporter (420) can be provided to reciprocate integrally with the piston rod (413).

[0184] Here, an elastic body (430) may be provided in the sheath seating space (421) of the sheath supporter (420). For example, the elastic body (430) may be provided as a member such as a coil spring.

[0185] In one embodiment, an elastic body (430) may be positioned between the lower surface of a cutter sheath (200) inserted into a sheath seating space (421) and the lower surface of the sheath seating space (421). Here, the cutter sheath (200) inserted into the sheath seating space (421) may be configured to move along the height direction of the sheath seating space (421) while inserted into the sheath seating space (421), and at this time, the elastic body (430) positioned between the lower surface of the cutter sheath (200) inserted into the sheath seating space (421) and the lower surface of the sheath seating space (421) may be configured to elastically support the cutter sheath (200).

[0186] Accordingly, as described below, when the bonding film (GF) of the pre-finished product (BP) is placed between the cutter (100) and the cutter sheath (200) and the cutter (100) is moved toward the bonding film (GF) to cut the bonding film (GF), if pressure is applied from the bonding film (GF) to the cutter sheath (200), the elastic body supporting the cutter sheath (200) can be compressed so that the cutter sheath (200) retracts a predetermined distance into the interior of the sheath seating space (421).

[0187] Next, with reference to FIGS. 9 to 12, the operation method of the cutting unit (70) described above and the shape of the bonding film (GF) of the finished product (P) manufactured by the cutting unit (70) will be explained.

[0188] FIGS. 9 to 11 are drawings illustrating the process of cutting the bonding film of a pre-finished product through the cutter part of a thermoforming vacuum packaging machine according to exemplary embodiments.

[0189] FIG. 12 is a drawing showing a finished product manufactured by a thermoforming vacuum packaging machine according to exemplary embodiments.

[0190] First, with reference to FIGS. 9 to 11, the process of cutting the bonding film (GF) formed on the edge of the finished product (BF) through the cutting section (70) will be explained.

[0191] First, as shown in FIG. 9, the finished product (BF) that has passed through the aforementioned sealing section (60) can be placed on the cutting section (70).

[0192] At this time, the pre-finished product (BF) can be positioned such that the bonding film (GF) formed on the edge of the pre-finished product (BF) is positioned between the cutter (100) and the cutter sheath (200) of the cutting section (70) which are arranged facing each other.

[0193] Next, as illustrated in FIG. 10, with the bonding film (GF) formed on the edge of the pre-finished product (BF) positioned between the cutter (100) and the cutter sheath (200) of the cutting section (70), the cutter (100) and the cutter sheath (200) can each be moved in a direction toward the bonding film (GF). At this time, the cutter (100) can be moved toward the bonding film (GF) by the operation of the cutter cylinder (310), and the cutter sheath (200) can be moved toward the bonding film (GF) by the operation of the sheath cylinder (410).

[0194] Here, the cutter cylinder (310) and the sheath cylinder (410) may be configured to operate simultaneously so that the cutter (100) and the cutter sheath (200) move simultaneously. At this time, the cutter sheath (200) moves and first contacts the lower surface (lower film (BF) portion) of the bonding film (GF) to provide support for the bonding film (GF), and while the cutter sheath (200) is supporting the bonding film (GF), the cutter (100) may be configured to contact the upper surface (upper film (TF) portion) of the bonding film (GF).

[0195] Next, as shown in FIG. 11, the cutter cylinder (310) and the sheath cylinder (410) continue to operate to perform cutting of the bonding film (GF) by the cutter (100).

[0196] Here, as described above, since the length (L2) of the second blade (220) of the cutter (100) is formed to be larger than the length (L1) of the first blade (210), when the cutter cylinder (310) and the sheath cylinder (410) continue to operate and move the cutter (100) and the cutter sheath (200) closer to each other, cutting of the bonding film (GF) by the second blade (220) is performed first. Additionally, when the cutter cylinder (310) and the sheath cylinder (410) continue to operate and move the cutter (100) and the cutter sheath (200) closer to each other, cutting by the first blade (210) is performed following the second blade (220).

[0197] Here, as described above, the tip angle (G2) of the second blade (220) and the (V2) of the second blade (220) can each be formed to be smaller than the tip angle (G1) of the first blade (210) and the edge bevel angle (V1) of the first blade (210).

[0198] For this reason, when cutting is performed first with the second blade (220) and then with the first blade (210) on the bonding film (GF), the cutting process on the bonding film (GF) can be performed more easily compared to when cutting is performed only with the first blade (210).

[0199] Specifically, when cutting is first performed on the bonding film (GF) by the second blade (220) and then by the first blade (210), the initial cutting of the bonding film (GF) can be performed more easily by the second blade (220), which has a relatively small tip angle (G2) and edge bevel angle (V2), and since subsequent cutting by the first blade (210) is performed while the initial cutting by the second blade (220) is already done, the overall cutting process of the bonding film (GF) can be performed more easily compared to the case where cutting is performed only through the first blade (210) from the beginning.

[0200] Meanwhile, during the process of cutting the bonding film (GF) by the second blade (220) and the first blade (210), a pair of film support members (220a, 220b) of the cutter sheath (200) continue to support the lower surface of the bonding film (GF). At this time, as described above, the pair of film support members (220a, 220b) are equipped with a support pad (221), and the support pad (221), which has flexibility and relatively large frictional force, supports the lower surface of the bonding film (GF), thereby minimizing the occurrence of slip in the direction perpendicular to the cutter (100) with respect to the bonding film (GD) during the cutting process of the bonding film (GF).

[0201] In addition, as described above, since the cutter sheath (200) is configured to move in the direction of the bonding film (GF) by the sheath cylinder (410), when the bonding film (GF) is cut by the cutter (100), the cutter sheath (200) supports and pushes up the bonding film (GF), thereby allowing a predetermined tension to be applied to the bonding film (GF), and accordingly, the cutting of the bonding film (GF) can be performed more easily.

[0202] Additionally, as described above, since the cutter sheath (200) is elastically supported by the elastic body (430), when pressure is applied to the cutter sheath (200) by the bonding film (GF) during the cutting process of the bonding film (GF), the elastic body supporting the cutter sheath (200) is compressed, and the cutter sheath (200) can be retracted into the interior of the sheath seating space (421) by a predetermined distance. With this operation, the impact applied to the bonding film (GF) during the cutting process of the bonding film (GF) can be mitigated to some extent, and accordingly, the phenomenon of the bonding film (GF) tearing in a direction different from the cutting direction during the cutting process of the bonding film (GF) can be minimized.

[0203] Meanwhile, as described above, the corner bevel angle (V2) of the second edge (121c) of the second blade (120) is formed to be larger than the corner bevel angle (V1) of the first edge (111c) of the first blade (110), so as described later, an incision groove (P2) that facilitates opening of the finished product (P) can be formed on the bonding film (GF) of the finished product (P).

[0204] Additionally, as described above, since the corner end point distance (d2) of the second edge (121c) of the second blade (120) is formed to be larger than the corner end point distance (d1) of the first edge (111c) of the first blade (110), an incision groove (P2) that facilitates opening of the finished product (P) can be formed on the bonding film (GF) of the finished product (P).

[0205] Next, with reference to FIG. 12, the shape of the bonding film (GF) of the finished product (P) manufactured by the cutting section (70) will be described.

[0206] As shown in FIG. 12, a cut edge (P1) and an incision groove (P2) can be formed respectively on the bonding film (GF) of the finished product (P) manufactured by cutting through the cutting section (70).

[0207] Here, the cutting edge (P1) is formed by the first blade (110) of the cutter (100), and the incision groove (P2) may be formed by the second blade (120) of the cutter (100).

[0208] In this way, by forming a cut groove (P2) on the bonding film (GF) of the manufactured finished product (P), the user can more easily open the finished product (P) through the cut groove (P2).

[0209] Although it has been described above that all components constituting an embodiment of the present invention are combined or operate as a single unit, the present invention is not necessarily limited to such an embodiment. That is, within the scope of the purpose of the present invention, all components may be selectively combined in one or more ways to operate.

[0210] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by these embodiments. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0211] 10: Lower film supply unit 20 : Forming Department 30: Loading section for packaging objects 40: Upper film supply unit 50 : Printing Department 60 : Sealing part 70 : Cutting section 80: Lengthwise cutting section 90 : Finished Product Discharge Section 100 : Cutter 200 : Cutter Sheath 300: Cutter drive module 400: Sheath drive module

Claims

Claim 1 A cutter for a thermoforming vacuum packaging machine, comprising a body portion including a first surface and a second surface disposed on the opposite side of the first surface; and a blade portion formed at one end of the body portion and including a first blade and a second blade having different shapes from each other; wherein the first blade includes a pair of first blade surfaces, a first edge formed at the portion where the pair of first blade surfaces meet each other, a pair of first blade sides formed at the end portions of each of the pair of first blade surfaces, and a first vertex formed at the portion where the end portions of the pair of first blade sides and the first edge meet; and the second blade includes a pair of second blade surfaces, a second edge formed at the portion where the pair of second blade surfaces meet each other, a pair of second blade sides formed at the end portions of each of the pair of second blade surfaces, and a second vertex formed at the portion where the end portions of the pair of second blade sides and the second edge meet, wherein the length from a virtual reference line (U) arranged along the longitudinal direction of the body portion to the second vertex is The length (L2) of the second blade is formed to be greater than the length (L1) of the first blade, which is the length from the reference line (U) to the first vertex; the tip angle (G2) of the second blade, which is the angle between the pair of second blade sides, is formed to be smaller than the tip angle (G1) of the first blade, which is the angle between the pair of first blade sides; the edge end point distance (d2) of the second edge, which is the distance between the end point of the second edge and the reference line (U), is formed to be greater than the edge end point distance (d1) of the first edge, which is the distance between the end point of the first edge and the reference line (U); and the edge inclination angle (V2) of the second edge, which is the angle formed by the second edge with the reference plane (A) extending from the first surface of the body part, is formed to be greater than the edge inclination angle (V1) of the first edge, which is the angle formed by the first edge with the reference plane (A) extending from the first surface of the body part. A cutter of a thermoforming vacuum packaging machine that is formed. Claim 2 delete Claim 3 A cutter for a thermoforming vacuum packaging machine according to claim 1, wherein the blade surface inclination angle of the pair of first blade surfaces and the blade surface inclination angle of the pair of second blade surfaces are formed differently from each other, and the blade surface inclination angle of the pair of second blade surfaces is formed smaller than the blade surface inclination angle of the pair of first blade surfaces. Claim 4 delete Claim 5 delete

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