JP2017113829A - Film cutting device, and film cutting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film cutting device which can cut a resin film as a material of a product without affecting safety and productivity of the product.SOLUTION: A film cutting device is provided with: a heating device which heats a part to be cut of a resin film so as to set a temperature of the part to be cut lower than a melting temperature of the resin film and higher than a softening temperature of the resin film; a support member including a planar support area for supporting the part to be cut; a cutting member having a projection strip part opposite to the support area; and a pressure device which presses the support area and the projection strip part with each other with the part to be cut interposed therebetween. A tip end part of the projection strip part is formed in a non-sharp cross sectional shape when viewed from a direction orthogonal to a first direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a film cutting apparatus and a film cutting method for cutting a resin film that is a material of a product requiring safety.

  Conventionally, there are various types of film cutting apparatuses for cutting a resin film. For example, as shown in FIGS. 8 and 9, a cutting tool 50 having a linear or saw blade-shaped cutting edge portion 50 a is used. In addition, a cutting edge (so-called movable blade) 50 provided so as to be movable in a direction orthogonal to the direction in which the cutting edge portion 50a extends (see, for example, Patent Document 1), as shown in FIG. There is a disk-shaped blade 60 having a portion 60a, which includes a blade (so-called rotating blade) 60 provided so as to be rotatable about its own center (see, for example, Patent Document 2). .

  In any of these film cutting devices 5 and 6, the blade tips 50 a and 60 a of the blades 50 and 60 are sharply formed, and the blade tips 50 a and 60 a of the blades 50 and 60 are pressed against the resin film F. The resin film F is cut.

JP 2006-142424 A JP 2014-226729 A

  By the way, in any of the conventional film cutting devices 5 and 6, since the blade edge portions 50a and 60a of the blades 50 and 60 are formed sharply, the resistance when cutting the resin film F, and the blade edge portions 50a and 60a. The cutting edge portions 50a, 60a of the blades 50, 60 may be lost due to the influence of contact between the blade and the other mold.

  Therefore, when the resin film F is cut by the conventional film cutting devices 5 and 6, there is a possibility that the fragments of the blade edge portions 50 a and 60 a generated due to the breakage of the blade edge portions 50 a and 60 a adhere to the resin film F before or after cutting. is there.

  As described above, when the fragments of the blade edge portions 50a and 60a adhere to the resin film F, it is generally included that the film cutting devices 5 and 6 are included because the safety of a product manufactured using the resin film F cannot be ensured. A detection sensor for detecting the presence or absence of foreign matter such as a fragment of the blade edge portions 50a and 60a is installed in a processing line or a production line for processing the cut resin film F into a product, and the foreign matter is detected based on the detection of the detection sensor. Products that are attached or mixed in are detected or eliminated.

  Therefore, in the conventional film cutting devices 5 and 6, there is a problem that the loss of the blades 50 and 60 affects the safety of the product, resulting in a production loss of the product.

  Therefore, the present invention provides a film cutting apparatus and a film cutting method capable of cutting a resin film used as a material of the product so as not to affect the safety and productivity of the product. Is an issue.

  The film cutting device according to the present invention is a heating device that heats at least a portion to be cut of a resin film to be cut, and the temperature of the portion to be cut is lower than the melting temperature of the resin film and the resin film A heating device that has a softening temperature or higher, a support member that includes at least a planar support region that supports a cutting planned portion of the resin film, a cutting member that has a ridge facing the support region, the support member, and A pressure device that moves the cutting member relative to each other in the first direction and presses the support region and the ridges in a state where the planned cutting portion is interposed, the ridges extending in the first direction. A proximal end portion and a distal end portion on the opposite side of the proximal end portion, and the distal end portion of the ridge portion is formed in a non-sharp cross-sectional shape when viewed from a direction orthogonal to the first direction. Features.

  According to the above configuration, at least the planned cutting portion of the resin film is heated by the heating device to be lower than the melting temperature of the resin film and higher than the softening temperature of the resin film. Softening without becoming a state that exhibits. Then, in a state where the planned cutting portion is disposed between the support region of the support member and the protruding strip portion of the cutting member, the pressurizing device moves the support member and the cutting member relative to each other to move the support region and the protruding strip portion. Press together. Thereby, the cutting scheduled part of the softened resin film is crushed by the support region and the ridges. That is, the cutting part of the resin film is thinned according to the relative movement amount between the support region and the ridge, and is finally cut.

  And in the film cutting device having the above-mentioned configuration, the ridge has a base end in the first direction and a tip opposite to the base end, and the tip of the ridge is in the first direction. Since it is formed in a non-sharp cross-sectional shape when viewed from the orthogonal direction, there are no sharp parts (parts that are easily damaged), and even if the cutting resistance of the resin film acts, the ridges (tip parts) There is no loss.

  Therefore, the film cutting device having the above-described configuration can cut the resin film used as the material of the product so as not to affect the safety and productivity of the product.

  As one aspect of the film cutting apparatus according to the present invention, it is preferable that the tip of the ridge is formed in a planar shape that is orthogonal or substantially orthogonal to the first direction. In this way, when the tip of the ridge is formed in a planar shape, an edge (outer edge) that defines the outer shape (peripheral shape) of the tip of the ridge is formed, so the tip of the ridge is made of the resin film. In addition to crushing the planned cutting portion, the edge (outer edge) of the tip of the ridge portion applies a shearing force to the cutting planned portion of the resin film, so that the resin film is cut in good shape and more reliably.

  As another aspect of the film cutting apparatus according to the present invention, the ridge portion may be formed in a cross-sectional shape that is tapered from the base end portion toward the tip end portion when viewed from a direction orthogonal to the first direction. In this way, when the support region and the ridges are pressed together, the ridges push away the crushing resin film (softened resin) to both sides of the ridges, and the resin film is cut more smoothly. Is done.

  As another aspect of the film cutting device according to the present invention, the film cutting device further includes a transport device that transports the resin film on a transport path passing between the support member and the cutting member, and the heating device includes the resin film It may be configured to heat the planned cutting portion of the resin film on the upstream side of the support member and the cutting member in the transport direction.

  In this way, before the planned cutting portion that moves from the upstream side to the downstream side in the transport direction along with the transport of the resin film by the transport device reaches between the support member and the cutting member, Since the heating device heats, after the scheduled cutting portion reaches between the support member and the cutting member, the time for heating the scheduled cutting portion (time for softening) becomes unnecessary or shortened. Thereby, the film cutting apparatus having the above configuration can operate the pressurizing means in a short time to cut the resin film after the planned cutting portion reaches between the support member and the cutting member. It can be cut repeatedly and efficiently.

  The film cutting method according to the present invention heats at least a portion to be cut of a resin film to be cut, and the temperature of the portion to be cut is lower than the melting temperature of the resin film and equal to or higher than the softening temperature of the resin film. A heating step, a planar support region of the support member, and a protruding strip portion of the cutting member facing the support member in the first direction, the base end portion in the first direction and the opposite side of the base end portion The resin film having a tip portion and having a non-sharp cross-sectional shape when viewed from a direction orthogonal to the first direction, the temperature being lower than the melting temperature and higher than the softening temperature. The resin film arranging step of arranging the planned cutting portion, the support member and the cutting member are relatively moved in the first direction, and the supporting region and the protruding strip portion are pressed together with the planned cutting portion interposed therebetween. Cutting process And wherein the door.

  According to the film cutting method, in the heating step, at least the planned cutting portion of the resin film is heated to a temperature lower than the melting temperature of the resin film and higher than the softening temperature of the resin film. It softens without becoming (a state that exhibits fluidity). In the resin film arranging step, the planned cutting portion is arranged between the support region of the supporting member and the protruding portion of the cutting member. In the cutting step, the supporting member and the cutting member are moved relative to each other and supported. When the area and the ridges are pressed together, the softened cut portion of the resin film is crushed by the support area and the ridges, and becomes thin according to the amount of relative movement between the support area and the ridges. Disconnected.

  And in the said film cutting method, the protruding item | line part of a cutting member has a base end part in a 1st direction, and a front-end | tip part on the opposite side of this base end part, and it is not seen from the direction orthogonal to a 1st direction. Since it is formed in a sharp cross-sectional shape, there is no sharp part (a part that tends to be lost), and even if the cutting resistance of the resin film acts, the ridge (tip part) is not lost.

  Therefore, the film cutting method can cut the resin film used as the material of the product so as not to affect the safety and productivity of the product.

  As one aspect of the film cutting method according to the present invention, it is preferable that the tip of the ridge is formed in a planar shape that is orthogonal or substantially orthogonal to the first direction. In this way, when the tip of the ridge is formed in a planar shape, an edge (outer edge) that defines the outer shape (peripheral shape) of the tip of the ridge is formed, so the tip of the ridge is made of the resin film In addition to crushing the planned cutting portion, the edge (outer edge) of the tip of the ridge portion applies a shearing force to the cutting planned portion of the resin film, so that the resin film is cut in good shape and more reliably.

  As another aspect of the film cutting method according to the present invention, the ridge portion is preferably formed in a cross-sectional shape that is tapered from the base end portion toward the tip end portion when viewed from the direction orthogonal to the first direction. . In this way, when the support region and the ridges are pressed together, the ridges push away the crushing resin film (softened resin) to both sides of the ridges, and the resin film is cut more smoothly. Is done.

  As another aspect of the film cutting method according to the present invention, the method further includes a transporting step of transporting the resin film on a transport path passing between the support member and the cutting member, You may make it heat the cutting scheduled part of the said resin film in the upstream rather than the said supporting member and the said cutting member arrange | positioned on both sides of a conveyance path | route.

  If it does in this way, before the cutting scheduled part which moves from the upper stream side of the conveyance direction to the lower stream side with the conveyance of the resin film by the conveyance process reaches between the support member and the cutting member, the cutting is performed in the heating process. Since the planned portion is heated, the time (softening time) for heating the planned cutting portion after the scheduled cutting portion reaches between the support member and the cutting member becomes unnecessary or shortened. Thereby, since the cutting method of the structure of the said structure can move to a cutting process (cut | disconnect a resin film) in a short time after a cutting scheduled part arrives between a support member and a cutting member, resin film It can be cut repeatedly and efficiently.

  As described above, according to the present invention, it is possible to achieve an excellent effect that the resin film used as a material of the product can be cut without affecting the safety and productivity of the product. .

FIG. 1 is a schematic perspective view of a chemical bag manufacturing apparatus including a film cutting device according to an embodiment of the present invention. FIG. 2 is a schematic side view of the film cutting apparatus according to the embodiment. FIG. 3: is the schematic plan view which looked at the cutting member of the film cutting device which concerns on the same embodiment from the protruding item | line part side. FIG. 4 is an enlarged view of a portion A in FIG. FIG. 5: is the elements on larger scale of the cutting member of the film cutting device which concerns on the same embodiment, Comprising: It is a partially expanded sectional view containing a protruding item | line part. FIG. 6 is a schematic perspective view of a film cutting apparatus according to another embodiment of the present invention. FIG. 7 is a schematic perspective view of a film cutting apparatus according to another embodiment of the present invention. FIG. 8 is a schematic perspective view of a conventional film cutting apparatus. FIG. 9 is a schematic perspective view of another conventional film cutting apparatus. FIG. 10 is a schematic perspective view of still another conventional film cutting apparatus.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the present embodiment, as an example of a product that requires high safety, a chemical solution bag that stores a liquid pharmaceutical product (hereinafter referred to as a chemical solution) is cited, and an apparatus for manufacturing a chemical solution bag (hereinafter referred to as a chemical solution bag). The case where it is adopted as one configuration) will be described as an example.

  The chemical solution bag manufacturing apparatus according to the present embodiment manufactures an unsealed chemical solution bag P before filling with a chemical solution as shown in FIG. 1, and is composed of two superposed resin films (thermoplastic resin film). ) A sealing device 2 that fluidly connects F and F and a film cutting device 3 that cuts two resin films (thermoplastic resin films) F and F connected by the sealing device 2 are provided. The chemical bag manufacturing apparatus 1 according to this embodiment further includes a film transport apparatus 4 that transports two overlapping resin films F and F on a transport path R that passes through the sealing device 2.

  The sealing device 2 includes a pair of heat seal bars 20 and 20 provided so as to be relatively movable in the first direction, and a sealing pressure device 21 that relatively moves the pair of heat seal bars 20 and 20 in the first direction. Prepare.

  Each of the pair of heat seal bars 20 and 20 is a facing portion 200 that faces each other in the first direction, and includes a facing portion 200 that is formed in accordance with the form of the connection portion of the two resin films F and F. Have. At least one facing portion 200 of the pair of heat seal bars 20 and 20 is configured by a heater that is heated to the melting temperature of the resin films F and F. In this embodiment, each opposing part 200 of a pair of heat seal bar | burr 20 and 20 is comprised with the heater.

  In the present embodiment, the pair of heat seal bars 20 and 20 are arranged with the transport path R of the resin films F and F interposed therebetween. That is, the transport path R of the resin film F transported by the film transport device 4 passes between the pair of heat seal bars 20 and 20 arranged in the first direction and extends in the second direction orthogonal to the first direction. .

  Each opposing portion 200 of the pair of heat seal bars 20, 20 has a first opposing portion 200a extending in a first direction and a third direction orthogonal to the second direction (a direction orthogonal to the conveying direction of the resin films F, F). Is provided. The first facing portion 200a faces the resin films F, F on the transport path R over the entire length in the third direction.

  The chemical solution bag manufacturing apparatus 1 according to the present embodiment manufactures a two-chamber type chemical solution bag that separately accommodates two types of chemical solutions, and each of the opposing portions 200 of the pair of heat seal bars 20 and 20 includes: In addition to the first facing portion 200a, a second facing portion 200b that is connected to the middle position of the first facing portion 200a in the third direction and extends in the second direction is provided. That is, each of the pair of heat seal bars 20 and 20 includes a second facing portion 200b for forming a partition portion that partitions the two resin films F and F that are overlapped into two spaces in the third direction. .

  In the present embodiment, one heat seal bar 20 of the pair of heat seal bars 20, 20 is provided to be movable in the first direction, and the other heat seal bar of the pair of heat seal bars 20, 20. 20 is fixed in a state where the facing portion 200 is along the transport path R of the resin film F. That is, one heat seal bar 20 is provided so as to be able to contact and separate from the other heat seal bar 20.

  When the pair of heat seal bars 20, 20 are moved relative to each other in the direction in which the opposing portions 200 of the pair of heat seal bars 20, 20 are brought closer to each other, the pressure applying device 21 for sealing uses a pair of heat seal bars 20, 20. The opposite portions 200 are pressed together.

  In the present embodiment, the sealing pressure device 21 is constituted by an air cylinder. As described above, since only one heat seal bar 20 is provided so as to be movable in the first direction, the sealing pressure device (air cylinder) 21 is connected to the one heat seal bar 20. As a result, the sealing pressure device (air cylinder) 21 moves one heat seal bar 20 in the first direction, and connects the opposing portion 200 of one heat seal bar 20 and the opposing portion 200 of the other heat seal. When approaching, the facing portion 200 of one heat seal bar 20 is pressed (pressurized) against the facing portion 200 of the other heat seal bar 20.

  As shown in FIGS. 1 and 2, the film cutting device 3 is a heating device 30 for heating at least a planned cutting portion CP of the resin films F and F to be cut, and the temperature of the cutting planned portion CP is set to the resin film. A heating device 30 that is lower than the melting temperature (melting point) of F and F and is equal to or higher than the softening temperature (softening point) of the resin films F and F, and a flat support that supports at least the planned cutting portion CP of the resin films F and F The support member 31 including the region S, the cutting member 32 having the protruding portion 321 facing the support region S, the cutting member 32 and the support member 31 are relatively moved in the first direction, and the planned cutting portion CP is interposed. And a pressurizing device 33 that presses the support region S and the ridge portion 321 together. In the present embodiment, the film cutting device 3 includes a transport device 34 that transports the resin films F and F on a transport route R passing between the support member 31 and the cutting member 32 (see FIG. 1).

  The heating device 30 heats at least one surface side of the resin films F and F. In the present embodiment, the heating device 30 heats one surface of one of the two resin films F and F that are superimposed.

  More specifically, the heating device 30 includes a flat film heating unit 300 and heaters 301 for heating the film heating unit 300.

  The film heating unit 300 is made of a metal having excellent thermal conductivity. The film heating unit 300 has a first surface in the first direction and a second surface opposite to the first surface, and is arranged so as to support the resin films F and F on the first surface.

  In this embodiment, since the resin films F and F are conveyed on the conveyance path | route R, in order to support this resin film F and F, the 1st surface of the film heating part 300 is the conveyance path | route of the resin films F and F Along R. The heating device 30 includes a pair of film guide portions 302 and 303 connected to both ends of the film heating unit 300 in the transport direction of the resin films F and F so as to smoothly move the resin films F and F being transported. Have. One of the film guides 302 on the upstream side in the transport direction of the resin films F and F is inclined toward the second surface side of the film heating unit 300 from the film heating unit 300 toward the tip, and the resin films F and F The other film guide section 303 on the downstream side in the transport direction is inclined toward the second surface side of the film heating section 300 as it goes downstream from the film heating section 300.

  The film heating unit 300 is formed in a square shape in plan view. In the present embodiment, the film heating unit 300 is formed in a rectangular shape in plan view, and the length in the longitudinal direction is set to be equal to or longer than the length in the third direction of the resin films F and F on the transport path R. ing.

  The film heating unit 300 having the above-described configuration is arranged such that the short direction perpendicular to the longitudinal direction coincides with the transport direction (second direction) of the resin films F and F. That is, the film heating unit 300 has one end in the short direction positioned on the upstream side in the transport direction of the resin films F and F, and the other end in the short direction positioned on the downstream side in the transport direction of the resin films F and F. I am letting.

  The heaters 301 are attached to the second surface of the film heating unit 300. In this embodiment, the heaters 301... Heat the entire second surface of the film heating unit 300 and lower the entire film heating unit 300 (the entire first surface) below the melting temperature of the resin films F and F to be cut. And it heats more than softening temperature. More specifically, the heating device 30 according to this embodiment includes a plurality of heaters 301. Several heater 301 ... is arrange | positioned at intervals in the transversal direction of this film heating part 300 with respect to the 2nd surface of the film heating part 300. As shown in FIG. As a result, the heating device 30 moves the cut portion CP from the melting temperature while the cut portion CP of the resin films F and F transported by the transport device 34 passes over the first surface of the film heating unit 300. Is heated to a temperature lower than the softening temperature.

  The support member 31 has a planar support region S that faces the tip of the ridge 321 of the cutting member 32. The support region S is a region that is wider than the tip of the protrusion 321 of the cutting member 32 (tip surface Sb to be described later: see FIGS. 4 and 5), and the protrusion of the cutting member 32 viewed from the first direction. It includes a region having a shape that matches or resembles the tip of the strip 321 (tip surface Sb). In the present embodiment, the support region S is a quadrangular region including a region corresponding to the tip surface Sb of the ridge portion 321 of the cutting member 32. That is, the support area S is a rectangular area wider than the tip of the ridge 321. In this embodiment, paying attention to the fact that the film heating unit 300 of the heating device 30 is formed in a flat plate shape, a part of the film heating unit 300 is also used as the support member 31 (support region S). That is, the support member 31 of this embodiment has a function as the heating device 30.

  In the present embodiment, the other end portion in the short direction of the film heating unit 300 on the downstream side in the transport direction of the resin films F and F is used as the support member 31 (support region S).

  As shown in FIG. 2, the cutting member 32 includes a connecting portion 320 to which the pressurizing device 33 is connected, and a protruding strip portion 321 connected to the connecting portion 320 directly or indirectly, and is based on the first direction. A ridge portion 321 having an end portion and a tip portion is provided. The cutting member 32 according to the present embodiment is a pedestal portion 322 provided between the ridge portion 321 and the coupling portion 320, and the pedestal portion that indirectly connects the ridge portion 321 to the coupling portion 320. 322 (see FIGS. 4 and 5).

  The connecting part 320 has a connecting part for connecting the pressure device 33. In this embodiment, the connection part 320 is formed in prismatic shape, and the connection site | part with the pressurization apparatus 33 is set on one plane of the four planes in the circumference | surroundings. In addition, the protruding portion 321 of the connecting portion 320 is directly or indirectly connected to a plane facing the opposite side to the plane where the connecting portion with the pressurizing device 33 is set.

  As shown in FIG. 3, the shape of the ridge portion 321 viewed from the first direction is determined in accordance with the shape of the planned cutting portion CP of the resin films F and F. The film cutting device 3 according to the present embodiment has one configuration of the chemical solution bag manufacturing device 1, and cuts the resin films F and F according to the outer shape of the chemical solution bag. Along with this, the ridges 321 are straight ridges 321a that extend straight, and branch ridges 321b that bifurcate from the ends of the straight ridges 321a, at both ends of the straight ridges 321a. Branch ridges 321b connected to each other.

  The straight ridge portion 321a extends straight in the third direction when viewed from the first direction. The length of the straight ridges 321a in the third direction is set slightly shorter than the length of the resin films F, F in the third direction. More specifically, the length of the straight ridge portion 321a in the third direction is determined from the length of the resin films F and F in the third direction, and the branched ridge portion connected to both ends of the straight ridge portion 321a. It is set to a length obtained by subtracting the outer dimension in the third direction of 321b.

  As shown in FIG. 4, the branching ridge portion 321b includes a pair of branching portions 321c and 321c connected to the end of the straight ridge portion 321a. Each of a pair of branch part 321c and 321c is a protruding item | line. More specifically, each of the pair of branch portions 321c and 321c has a symmetrical shape with respect to the straight ridge portion 321a, and is conveyed on the conveyance route R with the end of the straight ridge portion 321a as a starting point. The position corresponding to the passing position of the edge FE in the third direction in the resin films F and F is the end point. Each of the pair of branch portions 321c and 321c is formed in a curved shape when viewed from the first direction.

  The branch portions 321c and 321c of the straight ridge portion 321a and the branch ridge portion 321b have the same cross-sectional shape when viewed from the direction in which they extend (the direction orthogonal to the first direction). As shown in FIG. 5, the tip portions of the branch portions 321c and 321c of the straight ridge portion 321a and the branch ridge portion 321b are non-sharp cross-sectional shapes as seen from the direction in which they extend (the direction perpendicular to the first direction). Is formed.

  In the present embodiment, the tips of the ridges 321 (the straight ridges 321a and the branch portions 321c and 321c of the branch ridges 321b) are formed in a planar shape that is orthogonal or substantially orthogonal to the first direction. Further, in the present embodiment, the protrusions 321 (the straight protrusions 321a and the branching parts 321c and 321c of the branching protrusions 321b) are viewed from the direction orthogonal to the first direction (the direction in which they extend) It is formed in a cross-sectional shape that is tapered from the proximal end portion toward the distal end portion.

  More specifically, the ridges 321 (the straight ridges 321a and the branch portions 321c and 321c of the branch ridges 321b) are symmetric with respect to a virtual line (or virtual plane) VL extending in the first direction. It has a pair of side surface Sa and Sa arrange | positioned, and the front end surface Sb which connected the edge of a pair of side surface Sa and Sa.

  In the present embodiment, each of the pair of side surfaces Sa and Sa is a tapered surface inclined with respect to a virtual line (or virtual surface) VL extending in the first direction so as to approach each other from the base end portion toward the tip end portion. ing. On the other hand, the front end surface Sb is a plane orthogonal to the first direction. That is, the ridges 321 (the straight ridges 321a and the branch portions 321c and 321c of the branch ridges 321b) are formed in a trapezoidal cross section (in the figure, an inverted trapezoidal shape). Each of the pair of side surfaces (tapered surfaces) Sa, Sa is inclined at a predetermined angle θ with respect to a virtual line (or virtual surface) VL extending in the first direction. Here, the angle θ of the tapered surface with respect to the virtual line (or virtual surface) VL is 0 ° to 60 °, preferably 20 ° to 60 °, and more preferably 40 °. And the base end part of the protruding item | line part 321 is connected with respect to the connection part 320 directly or indirectly.

  The height in the first direction (height from the base end to the tip end) H of the ridge portion 321 is the thickness of the resin film F to be cut (in this embodiment, two superimposed resin films F, F total thickness).

  As described above, the cutting member 32 according to the present embodiment has the pedestal portion 322, and the protruding strip portion 321 is connected to the connecting portion 320 via the pedestal portion 322. The pedestal portion 322 extends in a direction orthogonal to the first direction, and a cross-sectional shape viewed from the direction in which the pedestal portion 322 extends is a quadrangular shape. In the present embodiment, the pedestal portion 322 has a proximal end and a distal end opposite to the proximal end in the first direction, and the proximal end is wider than the distal end. Thereby, the base part 322 is formed in cross-sectional trapezoid shape (in the figure, reverse trapezoid shape). And the connection part 320 is connected to the base end of the base part 322, and the protruding item | line part 321 is connected to the front-end | tip of the base part 322. FIG. In the present embodiment, the distal end of the pedestal portion 322 is formed wider than the proximal end portion of the ridge portion 321, and a step 333 is formed at the boundary between the ridge portion 321 and the pedestal portion 322. The step 333 functions as a restricting portion that holds the resin films F and F to be cut.

Returning to FIG. 1 and FIG. 2, an air cylinder is adopted as the pressure device 33 of the film cutting device 3. The air cylinder 33 is disposed so as to be expandable and contractable in the first direction, and the rod end or the cylinder end is connected to the connecting portion 320 (connecting portion) of the cutting member 32. The pressurizing device (air cylinder) 33 presses the cutting member 32 against the support member 31 with a propulsive force generated at the time of extension. Here, the output of the pressurizing device 33 is set so that the surface pressure acting on the tip surface Sb is 400 N / mm ² or more in relation to the tip surface Sb of the ridge 321.

  As shown in FIG. 1, the transport device 34 includes a pair of rollers 340 and 340 that sandwich the resin films F and F, and one of the rollers 340 and 340 is driven. In the present embodiment, the transport device 34 is configured to intermittently transport the long resin films F and F in the longitudinal direction. That is, the transport device 34 transports the resin films F and F in the longitudinal direction, and the cutting planned portion CP set with a gap in the longitudinal direction of the resin films F and F is cut from the support region S of the support member 31. It is configured to stop the conveyance of the long resin films F, F every time it is located between the protruding portion 321 of the member 32.

  In the present embodiment, the planned cutting portion CP of the resin films F and F is a band-shaped first seal line (resin films F and F are formed by the first facing portions 200a of the heat seal bars 20 and 20 of the sealing device 2). It is set at an intermediate position (intermediate position in a direction orthogonal to the longitudinal direction of the first seal line S1) of the connection part S1 formed by melting. Accordingly, the transport device 34 according to the present embodiment transports the resin films F and F in the longitudinal direction, and the first seal line S <b> 1 in which the two superimposed resin films F and F are connected is the support member 31. Each time it is located between the support region S and the convex portion 321 of the cutting member 32, the conveyance of the resin films F and F is stopped to give an opportunity to cut the two resin films F and F. It has become.

  The film transport apparatus 4 is one configuration of the chemical solution bag manufacturing apparatus 1 and includes a pair of rollers 40 and 40 that sandwich the resin films F and F, and one of the rollers 40 and 40 is driven. . In the present embodiment, the film transport device 4 is configured to intermittently transport the long resin films F and F in the longitudinal direction. That is, the film transport apparatus 4 transports the resin films F and F in the longitudinal direction, and the connection planned portion (seal position) JP set at intervals in the longitudinal direction of the resin films F and F is the heat of the seal apparatus 2. Each time it is located between the seal bars 20, 20, the conveyance of the resin films F, F is stopped. Thereby, the film conveying apparatus 4 gives the opportunity to join the two resin films F and F together.

  In the present embodiment, the timing at which the connection planned portion (seal position) JP of the resin films F and F is positioned between the heat seal bars 20 and 20 of the sealing device 2 and the planned cutting portion CP of the resin films F and F are the support members. Since the timing located between 31 and the cutting member 32 coincides, the film transport device 4 is also used as the transport device 34 of the film cutting device 3. Accordingly, in the present embodiment, the pair of rollers 40 and 40 of the film transport device 4 and the pair of rollers 340 and 340 of the transport device 34 of the film cutting device 3 are the same.

  The chemical solution bag manufacturing apparatus 1 according to the present embodiment is as described above. While the long resin films F and F are intermittently conveyed, the chemical solution bag (product) P that is unsealed from the long resin films F and F is obtained. To manufacture.

  More specifically, the film transport device 4 transports the two superimposed resin films F and F in the second direction, and transports when the planned connection portion JP reaches between the pair of heat seal bars 20 and 20. To stop.

  When the conveyance of the long resin films F and F is stopped, the pressure device 21 for sealing is driven, and the facing portions 200 of the pair of heat seal bars 20 and 20 sandwich the two long resin films F and F. Then, the opposing portion 200 (heater 301...) Of the heat seal bars 20 and 20 heats the resin films F and F to the melting temperature or higher, and melts (welds) the two resin films F and F that are superimposed. .

  Since the connection parts of the resin films F and F are formed in accordance with the form of the facing part 200 of the heat seal bars 20 and 20, in this embodiment, the first part connected by heating by the first facing part 200a. One seal line S1 and a second seal line S2 connected by heating by the second facing portion 200b are formed.

  As described above, when the two resin films F and F are connected, the film transport device 4 is driven to transport the two resin films F and F in the second direction. Then, the end portion of the second seal line S2 (the end portion opposite to the end portion connected to the first seal line S1) reaches a position corresponding to the first facing portion 200a of the heat seal bars 20, 20. Then, the film conveyance apparatus 4 stops conveyance of the long resin films F and F.

  When the conveyance of the resin films F and F is stopped, the sealing pressure device 21 is driven, and the opposing portion 200 of the pair of heat seal bars 20 and 20 sandwiches the two resin films F and F. Then, the opposing portion 200 (heater 301...) Of the heat seal bars 20 and 20 heats the resin films F and F to the melting temperature or higher, and melts (welds) the two resin films F and F that are superimposed. .

  At this time, the first seal line S1 formed in this step is connected to the second seal line S2 formed in the previous step. That is, the intermediate positions of the pair of first seal lines S1, S1 formed at intervals in the longitudinal direction of the resin films F, F are connected by the second seal line S2.

  As a result, a space defined by the pair of first seal lines S1, S1 and the two resin films F, F, with both ends orthogonal to the longitudinal direction being open, is bordered by the second seal line S2. Will be divided into two.

  And as above-mentioned, when the two resin films F and F are connected, the film conveyance apparatus 4 (conveyance apparatus 34) will drive, and the resin films F and F will be conveyed in a 2nd direction. Then, the end portion of the second seal line S2 (the end portion opposite to the end portion connected to the first seal line S1) reaches a position corresponding to the first facing portion 200a of the heat seal bars 20, 20. Then, the film conveyance apparatus 4 (conveyance apparatus 34) stops conveyance of the resin films F and F.

  In the present embodiment, as described above, since the film transport device 4 is also used as the transport device 34 of the film cutting device 3, the resin films F and F are transported (transport process) as described above, and the resin When the conveyance of the films F and F is stopped, the planned cutting portion CP (first seal line S1) of the resin films F and F is positioned between the support member 31 and the cutting member 32 (resin film arranging step).

  In the present embodiment, until the planned cutting portion CP (first seal line S1) reaches between the support member 31 and the cutting member 32, the heating device 30 (film heating unit 300) causes the planned cutting portion CP (first portion). One seal line S1) is heated (heating process), and the planned cutting portion CP (first seal line S1) located between the support member 31 and the cutting member 32 is lower than the melting temperature of the resin films F and F. And it becomes more than the softening temperature of the resin films F and F.

  Then, as the sealing device 2 connects the two resin films F and F as described above, the film cutting device 3 cuts the scheduled cutting portion CP. That is, the pressurizing device 33 moves the support member 31 and the cutting member 32 relative to each other and presses the support region S and the ridge portion 321 together (cutting process).

  If it does so, the cutting planned part CP of the softened resin films F and F will be crushed by the support area | region S and the protruding item | line part 321, and it will become thin according to the relative movement amount of the support area | region S and the protruding item | line part 321. It is cut (cutting process).

  Thereby, the space between the pair of first seal lines S1 and S1 is partitioned by the second seal line S2, and the partitioned space is opened at the end in the extending direction of the first seal lines S1 and S1. The chemical solution bag (product) P is completed. The unsealed chemical solution bag P is filled with different types of chemical solutions in each space, and the opened end portion is sealed to become a chemical solution bag as a finished product.

  As described above, the film cutting device 3 is a heating device 30 that heats at least the planned cutting portion CP of the resin films F and F to be cut, and the temperature of the cutting planned portion CP is set to that of the resin films F and F. A heating device 30 that is lower than the melting temperature and is equal to or higher than the softening temperature of the resin films F and F, a support member 31 that includes at least a planar support region S that supports the planned cutting portion CP of the resin films F and F, and a support region The supporting member S and the protruding line part 321 in a state where the cutting member 32 having the protruding line part 321 facing S, the support member 31 and the cutting member 32 are relatively moved in the first direction and the planned cutting part CP is interposed. And a pressing device 33 that presses together, and the protruding portion 321 has a proximal end portion and a distal end portion on the opposite side of the proximal end portion in the first direction. From the direction orthogonal to the first direction It is formed in the non-sharp cross section Te.

  According to this configuration, at least the planned cutting portion CP of the resin films F and F is heated by the heating device 30 to a temperature lower than the melting temperature and higher than the softening temperature, so the cutting planned portion CP is in a molten state (shows fluidity). Softening without becoming). Then, the pressing device 33 moves the support member 31 and the cutting member 32 relative to each other in a state in which the planned cutting portion CP is disposed between the support region S of the support member 31 and the ridge portion 321 of the cutting member 32. When the support region S and the ridge portion 321 are pressed together, the softened planned cut portions CP of the resin films F and F are crushed by the support region S and the ridge portion 321, and the support region S and the ridge portion 321 According to the relative amount of movement, it becomes thin and is finally cut.

  And in the film cutting device 3 of the said structure, the protruding item | line part 321 has a base end part and the front-end | tip part on the opposite side of this base end in a 1st direction, The front-end | tip part of this protruding item | line part 321 is a 1st direction. Since it is formed in a non-sharp cross-sectional shape when viewed from a direction orthogonal to one direction, there are no sharp parts (parts that are easily broken), and even if the cutting resistance of the resin films F and F acts, the ridges 321 (tip portion) is not lost.

  Therefore, the film cutting device 3 having the above configuration can ensure the safety of the product P using the cut resin films F and F, and can prevent the productivity of the product P from being lowered.

  Further, since the tip of the ridge portion 321 is formed in a planar shape that is orthogonal or substantially orthogonal to the first direction, an edge (outer edge) that defines the outer shape (outer peripheral shape) of the tip of the ridge portion 321 is formed. The As a result, the edge (outer edge) of the tip of the ridge portion 321 applies a shearing force to the planned cutting portion CP of the resin film F while the tip of the ridge portion 321 crushes the cutting portion CP of the resin film F. As a result, the resin film F is cut with good appearance and more reliably.

  Furthermore, since the protruding line portion 321 is formed in a cross-sectional shape that is tapered from the base end portion toward the distal end portion when viewed from the direction orthogonal to the first direction, the support region S and the protruding line portion 321 are pressed against each other. At the time of being combined, the ridge portion 321 pushes away the crushing resin films F and F (softened resin) to both sides thereof, and the resin films F and F are cut more smoothly.

  Moreover, the film cutting device 3 according to the present embodiment further includes a transport device 34 that transports the resin films F and F on the transport path R passing between the support member 31 and the cutting member 32, and the heating device 30 includes In addition, since the cutting portion CP of the resin films F and F on the upstream side of the support member 31 and the cutting member 32 is heated in the transport direction of the resin films F and F, the resin film by the transport device 34 is used. The heating device 30 heats the planned cutting portion CP before the planned cutting portion CP that moves from the upstream side to the downstream side in the transport direction along with the transport of F reaches between the support member 31 and the cutting member 32. . As a result, after the scheduled cutting portion CP reaches between the support member 31 and the cutting member 32, the time for heating the scheduled cutting portion CP (time for softening) becomes unnecessary or shortened. Therefore, the film cutting apparatus 3 according to this embodiment cuts the resin film F by operating the pressurizing means 33 in a short time after the planned cutting portion CP reaches between the support member 31 and the cutting member 32. The resin film F can be efficiently and repeatedly cut.

  In addition, this invention is not limited to the said embodiment, Of course, it can add suitably in the range which does not deviate from the summary of this invention.

  In the said embodiment, the film cutting device 3 is made into one structure of the chemical | medical solution bag manufacturing apparatus 1, and as a means to heat the resin films F and F (scheduled cutting part CP), the sealing device 2 (heat seal bars 20 and 20) Although the heating apparatus 20 (film heating part 300) was arrange | positioned in parallel, it is not limited to this. For example, as in the above embodiment, when the film cutting device 3 is configured as one component of the chemical solution bag manufacturing device 1, the cutting is scheduled by heating the resin films F, F by the sealing device 2 (heat seal bars 20, 20). When the portion CP reaches between the support member 31 and the cutting member 32, the temperature of the planned cutting portion CP is lower than the melting temperature of the resin films F and F and can be maintained above the softening temperature of the resin films F and F. The sealing device 2 (heat seal bars 20, 20) may also be used as the heating device 30 (film heating unit 300) of the film cutting device 3.

  In the said embodiment, although the film cutting device 3 was integrated in this chemical | medical solution bag manufacturing apparatus 1 as one structure of the chemical | medical solution bag manufacturing apparatus 1, it is not limited to this. For example, the film cutting device 3 can be configured as a single device as shown in FIG. Accordingly, the film cutting device 3 cuts the resin film F used for the product P such as the packaging material for packaging foods, in addition to cutting the resin film F used for the packaging material (medicine solution bag) for storing the medicine. May be used. That is, the film cutting device 3 may be used for cutting the resin film F used in the product P that requires high safety.

  Further, as described above, when the resin film F used for the product P such as a packaging material containing food or the like is cut, the film cutting device 3 is an apparatus for manufacturing the product P, like the chemical bag manufacturing device 1. Of course, it may be incorporated into the.

  In the said embodiment, it was made to cut | disconnect the two resin films F and F which were overlap | superposed together with the film cutting apparatus 3 having been made into one structure of the chemical | medical solution bag manufacturing apparatus 1, but it is not limited to this. . For example, the film cutting device 3 may naturally cut a single resin film F. Moreover, when a product is manufactured with three or more superimposed resin films F ..., the film cutting device 3 may cut the three or more superimposed resin films F ... together.

  In the above embodiment, an air cylinder is employed as the pressurizing device 33, but the present invention is not limited to this. For example, the pressurizing device 33 may employ a device that converts the rotational force of the electric motor into a linear motion and that exerts a force in the first direction from the linear motion.

  In the said embodiment, although the film cutting device 3 was provided with the conveying apparatus 34 which conveys the elongate resin film F to a longitudinal direction, it is not limited to this. For example, the film cutting device 3 does not include the transport device 34 that transports the resin film F, and the operator manually arranges the resin film F between the support region S and the ridge portion 321. It may be.

  In the said embodiment, although the front end surface Sb of the protruding item | line part 321 was formed in planar shape, it is not limited to this. For example, the tip end surface Sb of the ridge portion 321 may be an arc surface protruding outward. However, in order to be able to smoothly cut the planned cutting portion CP of the resin films F, F, the tip surface Sb of the ridge portion 321 is flattened on the outer periphery of the tip surface Sb as in the above embodiment. It is preferable to form an edge.

  In the said embodiment, although the protruding item | line part 321 had a pair of side surface Sa and Sa and the side surface Sa and Sa were made into the taper surface, it is not limited to this. For example, the pair of side surfaces Sa and Sa of the ridge portion 321 may be configured by a plane parallel to a virtual line VL (virtual surface) extending in the first direction. However, in order to make the protruding portions 321 easily bite into the resin films F and F, it goes without saying that the protruding portions 321 are formed in a cross-sectional shape that tapers from the base end to the tip end as in the above embodiment. Yes.

  In the said embodiment, although the cutting member 32 was provided with the base part 322, it is not limited to this. For example, the cutting member 32 may be one in which the ridge portion 321 is directly connected to the connecting portion 320.

  In the said embodiment, since the film cutting device 3 was integrated in the chemical | medical solution bag manufacturing apparatus 1, the protruding item | line part 321 of the cutting member 32 is the linear protruding item | line part 321a and the branch protruding item | line part 321b (branching part 321c, 321c). Although it provided, it is not limited to this, The form seen from the 1st direction of the protruding item | line part 321 of the cutting member 32 is determined according to the cutting | disconnection form (form of the cutting scheduled part CP) of the resin film F It only has to be done. In other words, the ridge portion 321 of the cutting member 32 may be formed in a straight line or an annular shape as viewed from the first direction, corresponding to the shape of the planned cutting portion CP, or bend It may be formed into a shape.

  In addition, in the said embodiment, although it did not mention in particular, when the front end surface Sb of the protruding item | line part 321 was formed in planar shape, the cutting | disconnection plan part CP (cutting line) of the resin film F bent, or branched. It can cut | disconnect favorable also in an aspect.

  More specifically, when the cutting edge portion is sharp like the blade of the conventional film cutting apparatus 3, the vertex portion and the cutting planned portion CP existing when the cutting planned portion CP is bent are branched. In this case, the blade thickness of the blade edge portion of the portion corresponding to the intersection portion existing in the case becomes thicker than the other portions, and the cutting state varies depending on the cutting location.

  However, when the tip surface Sb of the ridge portion 321 is formed in a planar shape as in the above embodiment, the apex portion and the planned cutting portion CP existing when the planned cutting portion CP is bent are branched. The intersection portion that exists when the above-described mode is adopted is also flat like the other portions, and edges are formed on both sides of the plane. Therefore, the shearing force by the edge is applied to any part of the cutting portion CP of the resin film F. As a result, the cutting state is good even in the bent or branched mode of the resin film F. Can be cut into pieces.

  In the said embodiment, although one part of the film heating part 300 of the heating apparatus 30 was combined with the support member 31, it is not limited to this. For example, as shown in FIG. 7, the film heating unit 300 and the support member 31 may be made separate and independent. However, even in this case, the temperature of the planned cutting portion CP is the resin in a state where the planned cutting portion CP of the resin film F is positioned between the support region S of the support member 31 and the protruding strip portion 321 of the cutting member 32. Of course, it is lower than the melting temperature of the film F and is not less than the softening temperature of the resin films F and F.

  In the said embodiment, although the heating apparatus 30 heated the cutting scheduled part CP of the resin film F in the upstream of the supporting member 31 and the cutting member 32, it is not limited to this. For example, the heating device 30 may heat the planned cutting portion CP located between the support member 31 and the cutting member 32 to soften the planned cutting portion CP. In this case, at least one of the support member 31 and the cutting member 32 and the heating device 30 may be integrated.

  In the said embodiment, although the heating apparatus 30 (film heating part 300) contacted the cutting planned part CP of the resin film F and heated the cutting planned part CP directly, it is not limited to this. For example, the heating device 30 may be one that blows hot air toward the resin film F.

  In the said embodiment, although the pressurization apparatus 33 moved the cutting member 32 in the 1st direction, it is not limited to this. For example, the pressurizing device 33 may be one that moves the support member 31 in the first direction, or one that moves both the support member 31 and the cutting member 32 in the first direction. The pressure device 33 is not limited to an air cylinder. For example, the rotary motion of the electric motor is converted into a linear motion, and at least one of the cutting member 32 and the support member 31 is converted by the linear motion. It may be moved in the first direction.

  In the above embodiment, the heating device 30 heats one surface side of the resin film F, and the entire cutting planned portion CP of the resin film F, F is lower than the melting temperature of the resin film F, F and above the softening temperature. However, the present invention is not limited to this. For example, the heating device 30 may heat the other surface of the resin film F facing the cutting member 32, or may heat both surfaces of the resin films F and F.

  In the said embodiment, although the support area | region S of the support member 31 was set to the magnitude | size larger than the protruding item | line part 321 (tip surface Sb) of the cutting member 32, it is not limited to this. For example, the support region S of the support member 31 may be set to have the same shape and the same size as the distal end surface Sb of the ridge portion 321 in a plan view (viewed from the first direction).

  DESCRIPTION OF SYMBOLS 1 ... Chemical solution bag (product) manufacturing apparatus, 2 ... Sealing apparatus, 3 ... Film cutting apparatus, 4 ... Film conveying apparatus, 20 ... Heat seal bar, 21 ... Pressure apparatus for sealing, 30 ... Heating apparatus, 31 ... Support member 32 ... Cutting member 33 ... Pressing device 34 ... Conveying device 40 ... Roller 200 ... Opposing part 200a ... First opposing part 200b ... Second opposing part 300 ... Film heating part 301 ... Heater 302, 303 ... Film guide part, 320 ... Connection part, 321 ... Projection line part, 321a ... Linear protrusion part, 321b ... Branch projection part, 321c ... Branch part, 322 ... Base part, 333 ... Step, 340 ... Roller , CP ... cutting scheduled part, F ... resin film (long resin film), JP ... connection scheduled part, R ... conveyance path, S ... support region, S1 ... first seal line, S2 ... second seal line, Sa ... side Sb ... tip surface, VL ... imaginary line

Claims (8)

  A heating device that heats at least a portion to be cut of a resin film to be cut, wherein the temperature of the portion to be cut is lower than a melting temperature of the resin film and equal to or higher than a softening temperature of the resin film; A support member including a planar support region that supports at least a planned cutting portion of the resin film, a cutting member having a ridge facing the support region, and the support member and the cutting member relative to each other in the first direction. And a pressing device that presses the support region and the ridge portion against each other with the planned cutting portion interposed therebetween, and the ridge portion has a base end portion and a base end portion of the base end portion in a first direction. A film cutting apparatus comprising: a distal end portion on the opposite side, and the distal end portion of the ridge portion being formed in a non-sharp cross-sectional shape when viewed from a direction orthogonal to the first direction.   The film cutting device according to claim 1, wherein a tip of the protruding portion is formed in a planar shape that is orthogonal or substantially orthogonal to the first direction.   3. The film cutting device according to claim 1, wherein the ridge portion is formed in a cross-sectional shape that is tapered from the base end portion toward the tip end portion when viewed from a direction orthogonal to the first direction.   The apparatus further includes a conveyance device that conveys the resin film on a conveyance path that passes between the support member and the cutting member, and the heating device is more than the support member and the cutting member in the conveyance direction of the resin film. The film cutting device according to any one of claims 1 to 3, wherein the film cutting device is configured to heat a scheduled cutting portion of the resin film on the upstream side.   A heating step of heating at least a portion to be cut of the resin film to be cut and setting the temperature of the portion to be cut lower than the melting temperature of the resin film and equal to or higher than the softening temperature of the resin film; And a protruding portion of the cutting member facing the support member in the first direction, having a base end portion and a tip end opposite to the base end portion in the first direction, and the first A resin film in which a portion to be cut of the resin film that is lower than the melting temperature and equal to or higher than the softening temperature is disposed between the protrusions that are formed in a non-sharp cross-sectional shape when viewed from a direction orthogonal to the direction. Including a disposing step, and a cutting step in which the support member and the cutting member are relatively moved in a first direction, and the support region and the protruding portion are pressed against each other with the planned cutting portion interposed therebetween. To cut film   The film cutting method according to claim 5, wherein a tip end of the ridge portion is formed in a planar shape orthogonal or substantially orthogonal to the first direction.   7. The film cutting method according to claim 5, wherein the ridge portion is formed in a cross-sectional shape that is tapered from the base end portion toward the tip end portion when viewed from a direction orthogonal to the first direction.   The method further includes a transport step of transporting the resin film on a transport path passing between the support member and the cutting member, and the heating step includes the support member disposed across the transport path of the resin film and the The film cutting method according to any one of claims 5 to 7, wherein a scheduled cutting portion of the resin film on the upstream side of the cutting member is heated.