Film feed apparatus for pressure difference decorative film

Abstract

To provide a feed apparatus and a feed method which can reduce the complexity of film setting and correctly execute film fixing and pulling-out.SOLUTION: A film feed apparatus comprises: a film storage box having a film storage space and a feed mechanism to the outside; and a film cassette stored so as to be set on a floor part of the film storage box. The film cassette includes shaft support mechanisms for plural rolls consisting of a target film roll, an upper winding roll, and a lower winding roll. The film storage box includes a pin lock mechanism for storing and fixing the film cassette in a prescribed set position within the film storage space, inside a film set space, and also includes: three torque joints connected to end parts of the shaft support mechanisms for the three rolls; and driving mechanisms for torque-rotating the respective torque joints.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a film supply device, and more particularly to a decorative film supply device for supplying a film to a decorative forming device that performs vacuum forming by expanding a decorative film substantially horizontally.

Background Art

[0002] Conventional film supply devices for decorative forming, including film supply devices arranged near the upper part of a vacuum forming device, have required setting a roll-shaped decorative film on a power shaft in the device for each film type, pulling the film out from the roll while performing torque management, and supplying it in a substantially horizontal direction by a fixed length. Also, when pulling the film out from the roll, it was necessary to peel off the protective film layer on the upper surface of the film and the adhesive protective layer on the lower surface of the film to expose the film with the adhesive layer from the protective material.

[0003]

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] ​However, since the conventional general film continuous supply mechanism is not for a vacuum decoration molding device, it is not easy to change or replace the film type according to the substrate type or the requirements of the decoration molding, which is often required in vacuum decoration molding. That is, in vacuum decoration molding, the type of film to be supplied may be changed for each one or more shots of the decoration molding, or the film may be continuously supplied in a predetermined amount up to a plurality of lengths, and the roll may be frequently replaced. Here, in the conventional vacuum decoration molding, every time the film is used up or the film type is changed between shots, it is necessary to reposition and fix the film roll to be set again, and to redo the initial operation processes such as pulling out the first film end and winding up the protective film, which is extremely complicated to perform manually. Especially for large films, transportation, placement, and removal of the end material need to be carried out by a conveying device or a carrier such as a forklift, and the fixing and accurate resetting of the roll for supplying the film straight from a certain position require the skilled skills of the operator.

[0006] Therefore, an object of the present invention is to provide a supply device and a supply method that can reduce the skilled skills of the operator and the complexity of manual work, and can accurately perform film fixing and pulling out.

Means for Solving the Problems

[0007] In order to solve the above problems, the film supply device for a decorative film of the present invention takes the following means (1) to (7).

[0008] (1) The film supply device for a decorative film of the present invention includes a film storage box 5 having a film storage space surrounded by left and right side walls, and a supply mechanism for supplying the film set in the film storage space to the outside from a supply port provided on the back surface, and is a film supply device composed of a film cassette 1 that can be set and accommodated on the floor portion (box table 2) of the film storage box. The film cassette incorporates, within the cassette space, shaft support mechanisms (121, 122, 123) corresponding in position and number to a plurality of rolls, namely at least two rolls, including a film roll for external supply and an upper take-up roll for taking up the protective film on the upper surface of the film roll. The shaft support mechanisms corresponding to the plurality of rolls have extension ends (131, 132, 133) protruding through one side wall in one direction of the film cassette. The film storage box 5 has a pin lock mechanism for accommodating and fixing the film cassette 1 at a predetermined set position in the film storage space on the floor part (box table 2) in the film set space or on the wall part near the floor part, and has a plurality of torque joints (331, 332, 333) each connected one by one to the extension ends of the plurality of shaft support mechanisms penetrating through one side wall of the film cassette, and a plurality of drive mechanisms 3 (motors 341, 342, 343) for torque-rotating each of the plurality of torque joints. Further, it is characterized by having an extension device or a moving device for moving each of the plurality of torque joints (331, 332, 333) closer to or away from the extension ends of the corresponding shaft support mechanisms.

[0009] As shown in FIGS. 1, 2, and 3, a film cassette with a film roll set inside in advance and a storage box equipped with a film supply mechanism are configured separately, and this film cassette is replaceably stored and set at a specified position within the film storage box. By doing so, even when using various film rolls, it becomes easy to supply a fixed amount of film straight from a determined fixed position, and it is possible to avoid the complexity and hassle of adjustment and resetting. Note that the film cassette 1 in the embodiment described later incorporates a three-roll shaft support mechanism 11, 12, 13 consisting of a shaft support mechanism 11 for the film roll FR, a shaft support mechanism 12 for the upper winding roll that winds up the protective film FC on the upper surface of the film of the film roll FR, and a shaft support mechanism 13 for the lower winding roll that winds up the adhesive layer protective film on the back surface of the film. The extended end portions of these three-roll shaft support mechanisms 11, 12, 13 penetrate through one side wall 102 of the film cassette and project respectively to one side portion, and a cylindrical receiving port mechanism 13 is formed at the tip of each extended end portion.

[0010] (2) In the film supply device for any of the decorative films, the film storage box has an openable and closable storage port for housing the film cassette within the film storage space, a guiding mechanism (roller 23R or belt) for guiding the film cassette to a predetermined set position in the depth direction within the film storage space, a pin lock control mechanism for locking or unlocking a pin provided in the film storage space and a lock portion provided in the film cassette with each other, and further includes a discharge mechanism (cylinder type extrusion mechanism) for extruding and discharging the film cassette within the film storage space in the depth direction and out of the film storage space. When housing the film cassette, the film cassette transported to the storage port can be repeatedly housed and fixed at a predetermined film set position by the guiding mechanism and the pin lock control mechanism, and When discharging the film cassette, the film cassette housed and fixed in the housing space can be discharged from the housing opening opened by the pin lock control mechanism and the guiding mechanism and the discharging mechanism by releasing the pin lock.

[0011] As shown in FIGS. 4, 8, and 9, the cassette can be semi-automatically housed and discharged by fixing (pin locking) the cassette to the box table and the mechanism for releasing the fixing and discharging by the cylinder.

[0012] (3) As a connection mechanism between the left side surface of the film cassette and the three-axis torque joint (), The three torque joints are a receiving port mechanism composed of a joint surface with continuous recesses arranged in three axes on one side of the film cassette, an insertion mechanism composed of a rotating receiving surface arranged in three axes on the corresponding side of the housing box, a joint control mechanism for bringing the receiving port mechanism and the insertion mechanism closer to each other and abutting or separating them, and are composed of The receiving port mechanism has a number of continuous hole surfaces connected in a circular shape, The insertion mechanism has two or more pin-shaped convex portions at symmetric positions when viewed from the rotation center in the rotation surface, After housing, when the joint control mechanism causes the connecting surface and the rotation surface of each of the three axes to abut, the convex portion is inserted into the connecting surface, resulting in the connected state of the joint.

[0013] As shown in FIGS. 4 and 5, the torque joint is brought into a connected state by abutting the insertion surface to be inserted.

[0014] (4) As a mechanism for expanding the diameter and crimping the two shafts of the take-up roll in the cassette, The shaft support mechanism of the take-up roller of the film cassette is provided on both sides of a predetermined axis in the cassette so as to be spaced apart and opposed to each other, and has a crimping portion that can be expanded or contracted and is divided into arc portions with equal central angles (in the embodiment, each quarter-circular arc portion) on the circumference. It is composed of a cylindrical mandrel whose both ends are inserted and circumferentially crimped by a crimping part, By making the crimping part movable with a reduced diameter to release the crimping of the mandrel, the mandrel can be removed, which is the feature.

[0015] As shown in FIGS. 6 and 7, by removing the mandrel made of a resin roll with the crimping parts at both ends, or cutting the mandrel to secure a central space, the film roll can be easily accommodated or replaced.

[0016] (5) It is characterized by comprising a plurality of types of film cassettes each held one by one on a plurality of up-and-down or left-and-right movable tables, a table control device for moving and arranging any one of the tables to a predetermined position near the front of the film storage box, and a guiding control device for operating a guiding mechanism in a state where it is recognized that one selected film cassette has been set. In the embodiment of FIG. 16, it includes a setting mechanism for vertically moving the table 71 to set it at a predetermined position, and a support base 6 for supporting a film storage case 5 connected by an arm 6A to the side of a film supply device 83 of a decorative molding device.

[0017] (6) As an appropriate state detection part of the cassette / storage box, The film cassette has a detection part for detecting whether each of one film roll and two winding rolls in the cassette is in an appropriate position, a visual recognition part for visually recognizing the state of the film, and a notification part for displaying or notifying when the film roll is not in the appropriate position.

[0018] (7) As an appropriate state detection part of the storage box, The storage box has a detection part for detecting whether the film cassette is fixed at an appropriate position in the storage space, and a visual recognition part for visually recognizing the state of the notification part of the film cassette. As shown in FIGS. 8 and 9, by the detection part, the visual recognition part, and the notification part, it is possible to confirm that the set state is appropriate and how much the remaining amount of the roll is, and to control the supply state of the film supply device.

Effect of the Invention

[0019] In the present invention, by taking the above measures, it has become possible to provide a supply device and a supply method that can reduce the skilled skills of workers and the complexity of manual work, and accurately perform film fixing and drawing.

Brief Description of the Drawings

[0020]

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Embodiments for Carrying Out the Invention

[0021] Hereinafter, as an example of an embodiment for carrying out the present invention, it will be described together with each drawing shown as an example. The present invention relates to a film cassette that can be set in and replaced with a film supply device attached to a decorative molding machine, and a film supply device composed of a film storage box and a film cassette. Conventional films are distributed in a state of being packaged by a packaging container (such as a cardboard container or a roll fixing part) in a wound roll state. When performing decorative molding, the packaging container packaged for transportation from a roll film manufacturing company is disassembled, and each roll is manually attached to the film supply device attached to the film decoration device. Further, after the film is used up in the film supply device, it is necessary to remove the roll attachment of the used film, manually disassemble the new film packaging container, and replace it by manual attachment. Such disassembly work and attachment work of the packaged packaging container are complicated, require the labor and time of workers, and there is a problem that the attachment and replacement time and accuracy vary depending on the number or skill level of the workers. Therefore, in the present invention, in view of the complexity of the conventional film mounting, the present invention is configured to be able to transport a film cassette in which the packaging container itself is made into a cassette, and this film cassette is accommodated and mounted via a predetermined cassette accommodation assisting mechanism. Thereby, it becomes unnecessary to package the packaging container for transportation, and by providing a mechanism for assisting or guiding the accommodation of the film cassette, a film supply device capable of achieving a certain mounting accuracy and mounting time regardless of the number and proficiency of workers is configured. Thereby, it becomes easy to replace other types of films midway during the roll, such as film color change or films of the same specification, and a film supply device capable of switching and supplying other types of films according to the number of supply times is obtained. Further, since the film is mainly composed of a separator, a decorative sheet, and a protective film, it is necessary to peel off the separator and / or the protective film before decorative molding. In the present invention, the structure is such that the peeling is also easy, and the wound separator and protective film are configured to be easily recyclable. Also, it is provided with a mechanism for monitoring in conjunction with a decoration device or the like for confirming the usage amount of the film and preventing sagging.

[0022] FIG. 14 illustrates a modification example regarding the terminal processing of the film. The left figure shows an example in which a leader and a separation roller are attached, and the right figure shows an example in which a separator guide is attached. A protective film (which may not be present) is temporarily attached to the upper surface of the decorative film, and a separator film is attached to the lower surface, and the three-layer decorative film is wound in a roll shape.

[0023] (Summary of the Invention) (1) A film cassette that can be set on a box table, having three rolls built in, wherein the cassette body has a pin lock mechanism (bottom and back), and torque joints of the three rolls (left side surface). FIG. 1, FIG. 2, FIG. 3

[0024] (2) Pin lock mechanism (What kind of discharge mechanism?) Fixing (pin lock) of the cassette to the box table and unlocking by a cylinder And a mechanism for discharging Figures 4, 8, 9

[0025] (3) Connection mechanism of the three-axis torque joint (left side) (What kind of pin structure?) For each of the three-axis mechanisms The circular continuous hole surface is brought into contact with the insertion surface for inserting two pins. Figures 4, 5

[0026] (4) Diameter-expanding crimping mechanism for the two shafts of the take-up roll in the cassette (How does it expand and crimp?) It consists of a crimping part by a diameter-expanding pin divided into four semi-circumferences and a crimping mechanism with a resin roll. Figures 6, 7

[0027] (5) As shown in Fig. 11, the pin lock mechanism is housed in the table of the box table 2, and includes a locking pin 27 that can stand upright on the table or move in an inverted state in a contrasting state, an air cylinder 26 that moves the locking pin 27 in the film guiding direction, and a locking pin 24T formed upright on the back for housing and fixing in the set position. The guiding mechanism is for fixing (pin lock) of the roller 23R cassette to the box table and unlocking by a cylinder And a mechanism for discharging Figures 8, 9

[0028] (Function and effect according to the embodiment mode) · For the roll film for film decoration, a packaging container (such as cardboard) is used and becomes industrial waste. In the present invention, the packaging container itself is made into a cassette and can be reused. · For the film for film decoration, a separator and a protective film that become peeling waste before molding were required, whereas in the present invention, by separating and winding in the cassette, it is made easier for the film manufacturer to recycle. · In the current film automatic supply, the film roll is replaced manually each time. The longest length of the current roll was 500 m, whereas in the present invention, automatic film replacement during mass production is required, and the configuration can handle it. · In the present invention, minimizing waste leads to a reduction in CO2 emissions.

[0029] In addition, the present invention is not limited to the above-described embodiments, and various modifications are possible, such as extraction of some elements, replacement of elements with other embodiments or alternatives, deletion, or overlapping combination of configurations between embodiments, without departing from the gist of the present invention.

Explanation of Reference Numerals

[0030] 1 Film cassette 2 Film storage box FR Film roll FC Protective film 11, 12, 13 Shaft support mechanism 23P Pin lock mechanism 131, 132, 133 Torque joint 131, 132, 133 31, 32, 33 Driving mechanism 20U Receiving port 21 Box table 22 Guide mechanism (roller 22R or belt), 23P Pin lock mechanism 23S, 23R Discharge mechanism 13 Receiving port mechanism 31 Insertion mechanism 34 Joint connection mechanism 13D Continuous hole part 31P Protrusion 120A Crimping part 120B Mandrel 14 Detection part 10W Visual recognition part, notification part

Claims

1. A film supply device comprising a film storage box having a film storage space and a film supply mechanism to the outside, and a film cassette that is removably accommodated in a box table on the floor of the film storage box, wherein the film cassette incorporates at least two roll support mechanisms including a shaft support mechanism for a film roll FR that supplies film to the outside and a shaft support mechanism for a take-up roll that winds up a protective film FC on the upper or lower surface of the film roll FR, the film storage box has a pin lock mechanism in the film storage space for accommodating and fixing the film cassette 1 at a predetermined set position in the film storage space, and a torque joint that is connected one by one corresponding to each extended end of the plurality of roll support mechanisms, and a drive mechanism that torque-rotates each torque joint, and is characterized in that it is a film supply device for a decorative film.

2. In the film supply device for any one of the decorative films, the film storage box has an openable and closable storage port for accommodating the film cassette in the film storage space, a guiding mechanism for guiding the film cassette to a predetermined set position in the depth direction on the box table on the floor of the film storage space, further includes a pin provided in the film storage space and a pin lock mechanism for locking or unlocking a lock portion provided in the film cassette to each other, when accommodating the film cassette, the film cassette 1 transported to the storage port can be repeatedly accommodated and fixed at a predetermined film set position by the guiding mechanism 22 and the pin lock mechanism, and when discharging the film cassette, the film cassette accommodated and fixed in the storage space can be pin unlocked by the pin lock mechanism and discharged from the storage port, and is characterized in that it is a film supply device for a decorative film according to claim 1.

3. The plurality of torque joints comprise a receiving port mechanism consisting of a joint surface with continuous recesses provided at the extended end of a roll shaft penetrating one side of the film cassette, a plug-in mechanism consisting of a rotary receiving surface arranged in three axes on the corresponding side of the storage box, and a joint connection mechanism for bringing the receiving port mechanism and the plug-in mechanism closer to each other to abut or separate, and are composed of the receiving port mechanism has a number of continuous hole portions connected in a circular shape, The insertion mechanism has two or more pin-shaped convex portions at symmetric positions when viewed from the center of rotation in the rotation plane. The film supply device for a decorative film according to claim 1, characterized in that, after accommodation, when the joint control mechanism causes the connecting surface and the rotation surface of each of the plurality of roll shafts to come into contact, the convex portions are inserted into the opposing connecting holes so that a joint connection state capable of torque transmission is achieved.

4. The shaft support mechanism of the roller of the film cassette is provided on both sides of a predetermined axis in the cassette so as to be spaced apart and opposed to each other, and includes a pressure-bonding portion that is movable to increase or decrease the diameter and is configured by dividing the circumference into arc portions with equal central angles. It is composed of a cylindrical mandrel whose both ends are inserted and circumferentially pressure-bonded by the pressure-bonding portion. The film supply device for a decorative film according to claim 1, characterized in that the mandrel can be removed by moving the pressure-bonding portion to reduce the diameter and releasing the pressure-bonding of the mandrel.

5. The film supply device according to claim 3, comprising a plurality of types of film cassettes each held on a plurality of vertically or horizontally movable tables, a table control device that moves and arranges one of the tables to a predetermined position near the front of the film storage box, and a guidance control device that operates the guidance mechanism in a state where it is recognized that one selected film cassette has been set.

6. The film cassette has a detection unit that detects whether each of one film roll and two winding rolls in the cassette is in an appropriate position, a visual recognition unit that allows the state of the film to be visually recognized, and a notification unit that displays or notifies when the film roll is not in the appropriate position. The film supply device for a decorative film according to claim 1.

7. The film storage box 2 has a detection unit that detects whether the film cassette is fixed in an appropriate position in the storage space, and a visual recognition unit that allows the state of the notification unit of the film cassette to be visually recognized. The film supply device for a decorative film according to claim 1.

Images