Apparatus for forming cut induction line on packaging film

Abstract

The present invention relates to a packaging film cutting guide line forming device designed to form uniform cutting guide lines on films of various materials by precisely adjusting the exposure area and position of a cutting blade during the transport process of a packaging film. The device comprises: a plurality of film transport rollers that transport a packaging film, which is the object to be used to form the cutting guide line, while changing the transport direction of the packaging film; a cutting roller rotatably installed on the transport path of the packaging film, having blade guide grooves repeatedly formed along its circumference; a mounting shaft installed spaced apart from and parallel to the cutting roller; at least one mounting bracket installed to be detachably attached to the mounting shaft and facing the position where the cutting guide line is to be formed; and a cutting blade rotatably connected to the mounting bracket, positioned in one of the plurality of blade guide grooves and seated in close contact with the packaging film, and rotating as the packaging film is transported to continuously form cutting guide lines on the packaging film.

Description

Technology Field

[0001] The present invention relates to a packaging film cutting guide line forming device, and more specifically, to a packaging film cutting guide line forming device designed to form uniform cutting guide lines on films of various materials by precisely adjusting the exposed area and position of a cutting blade during the transport process of the packaging film. Background Technology

[0003] Flexible packaging materials used for general food or household goods require an essential easy-cut function that allows them to be easily torn open by hand for the convenience of consumers.

[0004] To impart this easy-cut function, a perforation method that creates fine holes or a cutting guide line formation process that creates grooves of a certain depth is performed on the surface of the packaging film.

[0005] Conventional methods for forming incision guide lines typically utilize mechanical friction as the film passes by fixing a blade to a rotating roller or placing a blade fixed to the film transport path.

[0006] However, due to the characteristics of high-speed transported films, problems such as the cutting guide line not being formed at a consistent depth or being misaligned frequently occurred due to vibrations or changes in film tension during transport.

[0007] In particular, there was the inconvenience of having to stop the entire machine and manually adjust the height or position of the blade whenever the material or thickness of the packaging film changed.

[0008] If the cut depth is too deep, the strength of the packaging material is weakened, and there is a risk of damage during distribution; conversely, if it is too shallow, the ease of opening is reduced, causing consumer dissatisfaction.

[0009] Furthermore, in the case of wide film processing where multiple cutting guide lines must be formed simultaneously, significant time and skill are required to perform individual height adjustments while precisely maintaining the spacing between each blade.

[0010] If slip occurs during film transport, the cutting pitch becomes irregular, which can be a direct cause of quality defects.

[0011] As such, conventional technologies have limitations in that they cannot flexibly respond to changes in the physical properties of the film and cause excessive process downtime during the control process.

[0012] Consequently, there has been a continuous need for a precision control device capable of forming cutting guide lines of uniform quality regardless of film width and material, while increasing production efficiency.

[0013] The problem with conventional technology is that it is structurally difficult to adjust the position and depth of the cutting blade, and it is difficult to ensure uniformity in cutting quality because it cannot actively respond to physical variables that occur during film transport.

[0014] Meanwhile, the aforementioned background technology is technical information that the inventor possessed for the derivation of the present invention or acquired during the process of deriving the present invention, and it cannot necessarily be considered publicly known technology disclosed to the general public prior to the filing of the present invention. Prior art literature

[0016] Korean Registered Patent No. 10-1443391 (Published September 24, 2014) The problem to be solved

[0017] The present invention aims to stably control the transport direction of a packaging film while simultaneously freely adjusting the cutting position according to the width direction of the film, and to form a continuous and uniform depth cutting guide line through a blade that rotates in close contact with the film.

[0018] The technical problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0020] A packaging film cutting guide line forming device according to one embodiment of the present invention comprises: a plurality of film transport rollers that transport a packaging film, which is an object to be formed with a cutting guide line, while changing the transport direction of the packaging film; a cutting roller that is rotatably installed on the transport path of the packaging film and has blade guide grooves repeatedly formed along its circumference; a mounting shaft that is spaced apart and parallel to the cutting roller; at least one mounting bracket that is detachably installed on the mounting shaft and faces the position where the cutting guide line is to be formed; and a cutting blade that is rotatably connected to the mounting bracket, is positioned in one of the plurality of blade guide grooves and is seated in close contact with the packaging film, and rotates as the packaging film is transported to continuously form a cutting guide line on the packaging film.

[0021] In one embodiment, the cutting blade may include: a blade body portion in the shape of a circular flat plate that is rotatably connected to the mounting bracket by a bearing; and a toothed blade installed along the circumference of the blade body portion, with teeth repeatedly formed along the circumference to form a cutting guide line along the packaging film.

[0022] In one embodiment, the toothed blade comprises: a first side plate formed in a circular flat plate shape and rotatably connected and installed on one side of the blade body; a second side plate formed in a circular flat plate shape and rotatably connected and installed on the other side of the blade body, wherein the perimeter exposed from the blade body is in close contact with the perimeter of the first side plate; a first toothed portion repeatedly installed along the edge of the first side plate to form a cutting guide line; a plurality of second toothed portions arranged in close contact with the first toothed portion and repeatedly installed along the edge of the second side plate to form a cutting guide line, wherein the area of ​​the cutting guide line is increased as the intersection area with the first toothed portion decreases; and a connecting projection installed on the contact surface of the first toothed portion that is in close contact with the second toothed portion. It may include: a guide slot extending in a curved shape along the contact surface of the second gear that is in close contact with the first gear, with the end of the second gear as the center of an arc, so as to prevent the first gear and the second gear from separating as the first side plate or the second side plate is rotated by the user and the connecting projection is engaged and connected and moved; a first gear adjustment part that connects and installs the first gear to the edge of the first side plate; and a second gear adjustment part that connects and installs the second gear to the edge of the second side plate.

[0023] In one embodiment, the first gear adjustment unit may include: a plurality of gear support members that each support a plurality of the first gear members by connecting them to the edge of the first side plate; an exposure adjustment ring formed in a circular ring shape and installed to be rotatable on the inside of the first side plate; an exposure adjustment cam spaced apart along the outer surface of the exposure adjustment ring, which moves together with the exposure adjustment ring as it rotates to lift the gear support members and expose the first gear members from the first side plate, thereby increasing the cutting area of ​​the cutting guide line; and an adjustment pinion that is installed to be rotatable on the inside of the first side plate while engaging with the inner surface of the exposure adjustment ring by gear coupling, wherein a tool fastening groove is formed on the side exposed to one side of the first side plate for a user to rotate using a tool, and the adjustment pinion rotates the exposure adjustment ring as the user rotates it in a forward or reverse direction.

[0024] In one embodiment, the tooth support may include: a bracket mounting groove formed on the edge of the first side plate; a connecting bracket housed in the bracket mounting groove; a tooth mounting groove formed on the upper end of the connecting bracket so that the lower end of the first tooth part can be rotatably connected and installed; a bracket support spring installed on the inner side of the bracket mounting groove to pull and support the connecting bracket into the bracket mounting groove; and a cam follower installed on the lower end of the connecting bracket, positioned on the movement path of the exposure adjustment cam, and lifted by the exposure adjustment cam to move the connecting bracket upward from the bracket mounting groove.

[0025] In one embodiment, the first tooth portion may include: a blade shank disposed in the tooth mounting groove; a tooth connecting pin that supports the blade shank by connecting it rotatably to the tooth mounting groove; and a triangular cutting tip formed on the top of the blade shank, which is formed with a triangular shape that becomes progressively sharper toward the top and both inclined surfaces, and on a contact surface that is in close contact with the second tooth portion, wherein the connecting projection is installed thereon.

[0026] In one embodiment, the triangular cutting tip may have a contact surface that is in contact with the second tooth portion formed as a vertical plane, and an opposite surface formed as an inclined plane. Effects of the invention

[0028] By providing multiple rollers that control the transport path of the packaging film at various angles, the film tension is maintained at a constant level even during high-speed transport, thereby providing an excellent effect of preventing twisting or irregular formation of the cutting guide line.

[0029] By introducing a detachable mounting bracket system on the mounting shaft, the operator can quickly position the cutting means at the desired location, and productivity is dramatically improved by minimizing process waiting time when changing film specifications.

[0030] Since the blade guide groove formed in the cutting roller and the cutting blade interact to support the film, even if the film is thin or made of a tough material, the film can be formed with a precise depth without being chewed or torn.

[0031] By adopting a structure in which the blade rotates in synchronization with the film's transport force, film damage caused by frictional resistance is prevented, and the accuracy of the cutting pitch is maximized, making it possible to produce high-quality easy-cut packaging materials.

[0032] The modular structure of the entire device facilitates component replacement and maintenance, and provides the technical advantage of enabling precise positional deviation control for each individual line, even when operating multiple cutting lines simultaneously.

[0033] The effects of the present invention are not limited to those mentioned above, and various effects may be included within the scope obvious to a person skilled in the art from the contents described below. Brief explanation of the drawing

[0035] FIG. 1 is a diagram showing the schematic configuration of a packaging film cutting guide line forming device according to one embodiment of the present invention. Figure 2 is a drawing showing the cut blade of Figure 1. Figures 3 and 4 are drawings showing the toothed blade of Figure 2. FIGS. 5 and FIGS. 6 are drawings showing a first gear adjustment part according to the present invention. Specific details for implementing the invention

[0036] The following detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that various embodiments of the invention are different but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in relation to one embodiment. It should also be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the following detailed description is not intended to be limiting, and the scope of the invention is limited only by the appended claims, including all equivalents to those claimed therein, provided appropriately described. Similar reference numerals in the drawings refer to the same or similar functions across various aspects.

[0037] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

[0038] FIG. 1 is a diagram showing the schematic configuration of a packaging film cutting guide line forming device according to one embodiment of the present invention.

[0039] Referring to FIG. 1, a packaging film cutting guide line forming device (10) according to one embodiment of the present invention includes a film transfer roller (100), a cutting roller (200), a mounting shaft (300), a mounting bracket (400), and a cutting blade (500).

[0040] The film transfer roller (100) receives the packaging film (1) with the cut guide line formed thereon from the first winding roller (R1) on which the packaging film (1) is wound, and between the second winding roller (R2) that winds the packaging film (1)

[0041] A plurality of them are placed on the transport path of the packaging film (1), which is the object to be formed with the cutting guide line, and perform the role of maintaining the tension of the film while stably changing the transport direction and supplying it.

[0042] These multiple film transport rollers (100) apply constant tension to prevent the packaging film from wrinkling or folding, and precisely control the transport speed and position before the film enters the cutting roller (200) described later, thereby guiding the cutting guide line so that it does not deviate from the set trajectory.

[0043] The cutting roller (200) is rotatably installed on the transport path of the packaging film and has blade guide grooves formed at regular intervals along its circumference to provide a physical base on which the cutting blade (500) can be seated.

[0044] The cutting roller (200) performs the function of a back pressure roller that supports the back surface of the film as the packaging film passes through, and at the same time, guides the cutting blade (500) through the guide groove to properly penetrate only the thickness of the film, thereby assisting in precise depth control so that the film is not completely cut and only a guide line is formed.

[0045] The mounting shaft (300) is fixedly installed at a certain distance while maintaining a parallel state with the cutting roller (200), and serves as a frame that firmly supports the driving modules for forming the cutting guide line.

[0046] The mounting shaft (300) has a smooth surface and rigidity so that the mounting bracket (400) can be freely moved or fixed in position along the width direction of the film, and absorbs vibrations generated when forming multiple cutting guide lines simultaneously to maximize the structural stability of the device.

[0047] The mounting bracket (400) is detachably installed on the mounting shaft (300) so as to face the location where the cutting guide line is to be formed, thereby helping the worker to quickly position the cutting means at the desired location.

[0048] The mounting bracket (400) can increase or decrease the number as needed while maintaining the coupling force with the mounting shaft (300), thereby providing versatility to accommodate packaging films of various sizes, and stably provides a rotation axis through which the cutting blade (500) can rotate.

[0049] The cutting blade (500) is rotatably connected to the mounting bracket (400) and positioned to correspond to one of the blade guide grooves of the cutting roller (200), and rotates together with the transport force of the film while in close contact with the transported packaging film to continuously form a cutting guide line.

[0050] The cutting blade (500) applies constant pressure to the surface of the packaging film to repeatedly create fine cutting grooves, thereby providing an easy-cut function that allows the user to easily open the packaging material, and forms a guide line of uniform quality regardless of the material or thickness of the film.

[0051] A packaging film cutting guide line forming device (10) according to one embodiment of the present invention having the configuration described above has the effect of dramatically improving production efficiency and enabling precise cutting position control through position adjustment of the mounting bracket, as a plurality of rollers, a shaft, and a blade are organically combined so that the film conveying and cutting processes are performed simultaneously.

[0053] Figure 2 is a drawing showing the cut blade of Figure 1.

[0054] Referring to FIG. 2, the cutting blade (500) includes a blade body portion (510) and a serrated blade (520).

[0055] The blade body (510) is formed in a circular flat shape and is coupled to the mounting bracket (400) so as to rotate smoothly through an internal bearing, and serves as a body that holds the rotational center of the overall blade.

[0056] The blade body (510) has durability that does not deform even with friction with a film being transported at high speed, and provides a strong support so that the toothed blade (520) attached to the side can rotate without shaking, thereby maintaining the straightness of the cut line.

[0057] The serrated blade (520) is installed along the outer circumference of the blade body (510) and has sharp teeth repeatedly formed along the circumference so that when the packaging film passes through, it regularly strikes the surface of the film to form a cutting guide line.

[0058] The toothed blade (520) is integrated with the blade body (510) and rotates to determine the dotted line spacing of the guide line according to the spacing and shape of the teeth, and performs a key cutting function that creates an incision line with an accurate pitch without slipping by engaging with the tension of the film.

[0059] A cutting blade (500) according to one embodiment of the present invention having the configuration described above has the effect of reducing maintenance costs by minimizing resistance applied to the film and minimizing wear of the blade even during long-term use, as rotational performance is maximized by combining a circular body part and a serrated blade.

[0061] Figures 3 and 4 are drawings showing the toothed blade of Figure 2.

[0062] Referring to FIGS. 3 and 4, the toothed blade (520) includes a first side plate (521), a second side plate (522), a first toothed part (523), a second toothed part (524), a connecting projection (525), a guide slot (526), ​​a first toothed adjustment part (527), and a second toothed adjustment part (528).

[0063] The first side plate (521) is manufactured in the shape of a circular flat plate and is coupled to one side of the blade body (510), and provides a space to accommodate the first tooth adjustment part (527) inside to adjust the degree of tooth exposure.

[0064] The first side plate (521) is a basic structure that receives rotational force while facing the second side plate (522) to be described later, and guides the first toothed part (523) installed on the edge portion to move radially to control the cutting strength.

[0065] The second side plate (522) is installed on the opposite side of the blade body (510) with the same circular flat plate shape as the first side plate (521), and is in close contact with the first side plate (521) to protect internal components and maintain rotational balance.

[0066] The second side plate (522) is designed to rotate relative to the first side plate (521), thereby creating a mechanical environment in which the intersection area of ​​the teeth can be varied through the phase difference between the two plates.

[0067] The first tooth section (523) is installed radially along the edge of the first side plate (521) and serves as a primary cutting edge that forms a direct cut groove on the film surface.

[0068] The first tooth section (523) is a key element that determines the thickness and shape of the overall cutting blade, and whose height exposed to the outside can be varied according to the operation of the adjustment section, and which physically overlaps or is separated from the second tooth section (524).

[0069] The second toothed portion (524) is installed on the edge of the second side plate (522) and is positioned in a superimposed state with the first toothed portion (523), and finely increases or decreases the actual cutting area of ​​the cutting guide line through changes in the intersection area with the first toothed portion (523).

[0070] The second tooth section (524) allows the effective area of ​​the entire tooth exposed to the outside to be widened as the portion overlapping with the first tooth section (523) decreases according to the rotation of the plate, thereby enabling the formation of a more distinct incision guide line.

[0071] The connecting projection (525) is formed protruding from the contact surface of the first tooth part (523) and inserted into the guide slot (526) of the second tooth part (524), thereby restraining the two tooth parts so that they can move in conjunction without separating from each other.

[0072] The connecting projection (525) moves along the slot during relative rotation between plates and maintains a constant gap between the two teeth, and also functions as a safety device to prevent the teeth from being flung out by the centrifugal force generated during high-speed rotation.

[0073] The guide slot (526) is formed in a long, curved shape on the contact surface of the second tooth part (524) to restrict the movement trajectory of the connecting projection (525) and ensure smooth movement when a phase change of the tooth occurs.

[0074] The guide slot (526) is designed to take into account the center of the arc, so that the connecting projection (525) moves without getting caught even when the plate rotates, and prevents the toothed part from separating, thereby ensuring mechanical reliability.

[0075] The first tooth adjustment unit (527) is embedded in the first side plate (521) and provides a power transmission mechanism that controls the depth of the blade contacting the film by controlling the radial position of the first tooth unit (523).

[0076] The first tooth adjustment unit (527) is connected to an external adjustment device and simultaneously protrudes or retracts a number of teeth, thereby providing convenience so that the operator does not have to manually adjust the teeth one by one.

[0077] The second gear adjustment unit (528) is provided on the side of the second side plate (522) to control the second gear unit (524) individually or integrally, and optimizes the cutting quality through precise phase adjustment with the first gear unit (523).

[0078] A toothed blade (520) according to one embodiment of the present invention having the configuration described above can freely change the cutting area according to the thickness or strength of the film through a double plate structure and a phase-adjustable tooth system, thereby maximizing the flexibility of the production process.

[0080] FIGS. 5 and FIGS. 6 are drawings showing a first gear adjustment part according to the present invention.

[0081] Referring to FIGS. 5 and 6, the first gear adjustment part (527) includes a gear support part (5271), an exposure adjustment ring (5272), an exposure adjustment cam (5273), and an adjustment pinion (5274).

[0082] Here, the second gear adjustment unit (528) has the same configuration as the first gear adjustment unit (527) described below, and the gear support unit (5271), exposure adjustment ring (5272), exposure adjustment cam (5273), and adjustment pinion (5274) of the first gear adjustment unit (527) can be applied in the same way, so to avoid duplication of explanation, the description thereof will be omitted.

[0083] The tooth support (5271) individually supports a plurality of first tooth parts (523) on the edge of the first side plate (521) and performs a housing function of exposing the tooth to the outside or storing it inside through vertical linear movement.

[0084] The tooth support (5271) protects the base of the tooth from external impact and converts the horizontal rotational force received from the exposure control cam (5273) into a vertical upward force to precisely control the protrusion height of the tooth.

[0085] The exposure adjustment ring (5272) is a ring-shaped part rotatably installed in the inner space of the first side plate (521), and has gear teeth formed on its inner surface to mesh with the adjustment pinion (5274) and rotate.

[0086] The exposure control ring (5272) acts as the central hub of the entire gear exposure system and, as it rotates, moves all exposure control cams (5273) mounted on the outer surface simultaneously so that multiple gears are adjusted to a uniform height.

[0087] The exposure control cam (5273) is installed at regular intervals along the outer surface of the exposure control ring (5272) and has an inclined surface, so that when the ring rotates, it acts as a wedge to push up the lower end of the tooth support (5271).

[0088] The exposure control cam (5273) raises the tooth support (5271) in proportion to the rotation angle of the ring, thereby varying the depth and area of ​​the cut guide line in real time and enabling ultra-precision control through fine angle of inclination design.

[0089] The adjusting pinion (5274) is rotatably installed on one side of the first side plate (521) and gear-coupled with the inner surface of the exposed adjusting ring (5272), and is configured so that a worker can directly rotate it through a tool fastening groove exposed to the outside.

[0090] The adjusting pinion (5274) amplifies the rotational force when a worker rotates it in the forward or reverse direction with a tool such as a wrench and transmits it to the exposure adjustment ring (5272), thereby providing a user interface that allows the gear height to be easily set from the outside without disassembling the device.

[0091] The first gear adjustment unit (527) according to one embodiment of the present invention having the configuration described above can collectively control the exposure degree of all gears in a single operation through a precision gear mechanism consisting of a pinion, a ring, and a cam, thereby having the effect of drastically shortening the setting time.

[0093] Referring to FIG. 6, the tooth support member (5271) includes a bracket seating groove (52711), a connecting bracket (52712), a tooth installation groove (52713), a bracket support spring (52714), and a cam follower (52715).

[0094] The bracket mounting groove (52711) is formed by being recessed into the edge of the first side plate (521) to provide a guide passage through which the connecting bracket (52712) can slide in a vertical direction.

[0095] The bracket mounting groove (52711) is precisely machined to withstand lateral pressure generated during high-speed rotation, thereby suppressing shaking of the connecting bracket (52712) and blocking the ingress of dust or foreign matter to ensure smooth lifting operation.

[0096] The connecting bracket (52712) is housed in the bracket mounting groove (52711) and moves up and down, and is equipped with a gear on the upper end and a cam follower (52715) on the lower end to serve as a lifting carrier for the gear.

[0097] The connecting bracket (52712) is made of a lightweight, high-strength material to minimize the influence of centrifugal force during high-speed rotation and forms a physical base through the tooth installation groove (52713) that allows the first tooth part (523) to move flexibly.

[0098] The tooth mounting groove (52713) is formed in the upper part of the connecting bracket (52712) and is a space into which the lower part of the first tooth part (523) is inserted and coupled, providing a pivot point where the tooth can be rotated or fixed at a certain angle.

[0099] The tooth mounting groove (52713) disperses the impact applied to the tooth during the cutting process and provides a gap so that the tooth can react finely according to the friction angle with the film, thereby preventing damage to the blade.

[0100] The bracket support spring (52714) provides an elastic restoring force that constantly pulls the connecting bracket (52712) towards the center of the plate from the inside of the bracket seating groove (52711), thereby maintaining the cam follower (52715) in close contact with the exposure control cam (5273).

[0101] The bracket support spring (52714) quickly returns the connecting bracket (52712) when the exposure adjustment cam (5273) retracts, thereby allowing the gear to be stored back inside and completely preventing the occurrence of play in the gear caused by vibration.

[0102] The cam follower (52715) is installed at the bottom of the connecting bracket (52712) and comes into contact with the movement path of the exposure control cam (5273), and acts as a conveyor that converts the height change of the cam into the vertical movement of the connecting bracket (52712).

[0103] The cam follower (52715) takes on a roller or low-friction structure to minimize friction with the exposure control cam (5273) to prevent wear of the cam and immediately responds to the rotation of the fine control ring to control the exposure amount of the gear.

[0104] A tooth support member (5271) according to one embodiment of the present invention having the configuration described above has the effect of ensuring consistency in cutting quality by maintaining precise position fixing force while repeatedly performing upward and downward movements of the tooth through the harmonious operation of elastic restoring force and cam mechanism.

[0106] Referring to FIG. 5, the first toothed part (523) includes a blade shank (5231), a toothed connecting pin (5232), and a triangular cutting tip (5233).

[0107] The blade shank (5231) is positioned inside the tooth mounting groove (52713) and forms the overall central axis of the first tooth section (523), serving as a pillar that firmly connects the housing and the cutting tip.

[0108] The blade shank (5231) distributes the cutting load transmitted to the upper structure to the lower structure and also functions as a damper to mitigate the impact applied when in contact with the film surface by securing rotational freedom through the toothed connecting pin (5232).

[0109] The tooth connecting pin (5232) is fastened by passing the blade shank (5231) through the tooth mounting groove (52713) to fix the tooth so that it does not detach, and at the same time supports it so that rotational movement around the pin is possible.

[0110] The gear connecting pin (5232) is made of a high-strength metal material so that it does not deform under repeated loads, and allows for quick attachment and detachment by removing only the pin when replacing the gear, thereby increasing maintenance efficiency.

[0111] The triangular cutting tip (5233) is formed at the top of the blade shank (5231) and comes into direct contact with the film, forming a practical cutting tool that makes fine holes or lines in the film through a triangular shape that becomes sharper toward the end.

[0112] The triangular cutting tip (5233) is combined with the second toothed part (524) through a connecting projection (525) formed on the contact surface and moves as one unit, and performs a special geometric function of adjusting the cutting width according to the depth of penetration into the film by utilizing the inclined surface of the triangle.

[0113] The first toothed portion (523) according to one embodiment of the present invention having the configuration described above has the effect of forming a neat and clear cutting guide line even on various film materials by combining flexible movement through pin coupling and the sharp cutting force of the triangular tip.

[0115] Referring to FIG. 6, the triangular cutting tip (5233) is composed of a vertical flat section and an inclined section.

[0116] The triangular cutting tip (5233) has a contact surface that contacts the second tooth part (524) that is made of a vertical, smooth plane, which prevents a gap from forming when the two tooth parts overlap and increases the contact force.

[0117] The triangular cutting tip (5233) has a structure in which the opposite side of the flat surface is treated as an inclined surface and gradually becomes thinner toward the end of the blade, thereby minimizing resistance when entering the film and suppressing the phenomenon of the cutting surface becoming rough.

[0118] The triangular cutting tip (5233) satisfies the conflicting elements of durability and cutting performance simultaneously by having one side perfectly guide sliding with the second toothed section through this asymmetrical structure, while the other side maintains a sharpness that penetrates the film.

[0119] A triangular cutting tip (5233) according to one embodiment of the present invention having the configuration described above has the effect of ensuring precise overlapping drive between teeth through a unique asymmetric cross-sectional structure, while simultaneously maintaining uniform quality of the cutting guide line and extending the life of the blade.

[0121] The embodiments described above are for illustrative purposes only, and those skilled in the art will understand that the embodiments described above can be easily modified into other specific forms without altering the technical concept or essential features of the embodiments described above. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single unit may be implemented in a distributed manner, and components described as distributed may likewise be implemented in a combined form.

[0123] The scope of protection sought through this specification is defined by the claims set forth below rather than by the detailed description above, and should be interpreted to include all modifications or variations derived from the meaning and scope of the claims and the concept of equivalents. Explanation of the symbols

[0125] 10: Packaging film cutting guide line forming device 100: Film transport roller 200: Incision roller 300: Mounting shaft 400: Mounting bracket 500: Incision blade

Claims

Claim 1 A plurality of film transport rollers that transport a packaging film, which is an object on which a cutting guide line is to be formed, while changing the transport direction; a cutting roller rotatably installed on the transport path of the packaging film and having blade guide grooves repeatedly formed along its circumference; a mounting shaft installed parallel to and spaced apart from the cutting roller; at least one mounting bracket installed to be detachably attached to the mounting shaft while facing the position where the cutting guide line is to be formed; and a cutting blade rotatably connected to the mounting bracket, positioned in one of the plurality of blade guide grooves and seated in close contact with the packaging film, and rotating as the packaging film is transported to continuously form a cutting guide line on the packaging film; wherein the cutting blade comprises a blade body portion in the shape of a circular flat plate that is rotatably connected to the mounting bracket by a bearing; The device comprises: a toothed blade installed along the circumference of the blade body portion, with teeth repeatedly formed along the circumference to form a cutting guide line along the packaging film; wherein the toothed blade comprises: a first side plate formed in a circular flat plate shape and rotatably connected and installed on one side of the blade body portion; a second side plate formed in a circular flat plate shape and rotatably connected and installed on the other side of the blade body portion, with the circumference exposed from the blade body portion being in close contact with the circumference of the first side plate; a first tooth portion repeatedly installed along the edge of the first side plate to form a cutting guide line; a plurality of second tooth portions arranged in close contact with the first tooth portion and repeatedly installed along the edge of the second side plate to form a cutting guide line, wherein the area of ​​the cutting guide line is increased as the intersection area with the first tooth portion decreases; and a connecting projection installed on the contact surface of the first tooth portion that is in close contact with the second tooth portion.A packaging film cutting guide line forming device characterized by comprising: a guide slot extending in a curved shape along the contact surface of the second gear that is in close contact with the first gear, with the end of the second gear as the center of an arc, so as to prevent the first gear and the second gear from separating as the first side plate or the second side plate is rotated by a user and the connecting projection is engaged and connected and moved; a first gear adjustment part that connects and installs the first gear to the edge of the first side plate; and a second gear adjustment part that connects and installs the second gear to the edge of the second side plate. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete

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