JP2019064704A - Seal device for deep-drawing packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount even a sealer having a shorter length in a direction along a transport direction than a dimension and a shape of a lower opening of a recess of a bridge. This is a sealing device used in a deep drawing packaging machine provided with a lower box 31 and an upper box 32 arranged to face each other with the upper film sandwiched between them. The upper box includes a bridge 34 having a recess on the lower surface and a sealer 38 housed in the recess, and the sealer has a sealing surface exposed from the lower opening of the recess when housed in the recess. Become in a state. The bridge has a rack 45 that can be pulled out in a direction orthogonal to the film conveying direction, and the sealer is mounted on the rack in a detachable state via the holder 48. The holder includes a pair of support plate portions 48b protruding toward the center on a pair of inner peripheral surfaces of the frame body 48a. By increasing the length of the support plate, a short sealer can be supported. [Selection diagram] FIG. 7

Description

  The present invention relates to a seal device for a deep draw packaging machine.

  As one of various packaging forms, there is a deep-drawable package. The deep-drawable package has a container body having a storage recess for storing a product, and a lid member for closing the opening of the container body in a state where the product is stored in the storage recess. The deep drawing packaging machine which manufactures the deep drawing type package of the composition concerned takes the following composition.

  The lower film is conveyed horizontally to form a container body which is continuously drawn from the raw film. The film transport apparatus for transporting in the horizontal direction has a configuration in which, for example, both end edges of the lower film are gripped and clamped by claw members attached to an endless chain extending in the transport direction. As the endless chain rotates, the claw member also revolves along a predetermined trajectory, and conveys the lower film clamped on the claw portion.

  The lower film is vacuum-suctioned by a molding apparatus disposed in the middle of the conveyance of the lower film, and a storage recess projecting downward is molded at a predetermined position of the lower film. Then, the product is automatically or manually supplied into the storage recess at a predetermined position on the downstream side of the molding apparatus.

  On the other hand, another original film is installed above the lower film conveyance line, and the upper film for forming a lid member is continuously drawn from the original film and the drawn upper side The film is superposed on the lower film at a predetermined position downstream of the supply point of the product.

  Further, on the downstream side of the polymerization point of the two films, a sealing device is disposed, which seals the contact area between the upper film and the lower film. Thereby, the product is sealed in the storage recess. Thereafter, by cutting a seal portion of both films with a cutter device disposed on the downstream side of the seal device, the individual deep-drawable packages are separately manufactured. A deep draw packaging machine of this type is disclosed in Patent Document 1 and the like. In addition, prior to performing the sealing process, the sealing device is subjected to vacuum suction for removing by suction the air in the storage recess formed on the lower film, thereby bringing the film into close contact with the product for vacuum packaging. The sealing device provided with such a function to evacuate is also called a vacuum chamber.

JP 2014-114036

  The sealing device comprises an upper box and a lower box which sandwich the upper film and the lower film from above and below. The upper box includes, for example, a bridge having a recess in the lower surface, a heating plate mounted in the recess of the bridge, a sealer, and the like. The seal surface of the sealer is formed such that the seal area of the upper film and the lower film other than the storage recess is heated. Therefore, for example, when the dimensional configuration of the package is changed due to, for example, a change in the product to be packaged, the layout of the storage recess formed in the lower film is also changed, and it is necessary to replace the sealer with that. The dimension and shape of the sealer correspond to the dimension and shape of the recess of the upper box, and for example, when the dimension and shape of the sealer are short, there is a possibility that the sealer can not be mounted.

  The problems described above are described as being independent of each other, and the present invention does not necessarily have to be able to solve all the problems described, as long as at least one problem can be solved. In addition, with regard to the configuration for solving this problem, we have an intention to acquire the right by division application / correction etc. alone.

  In order to solve the problems described above, the sealing device for a deep draw packaging machine according to the present invention comprises (1) a lower box and an upper box disposed opposite to each other in a state of sandwiching the overlapped lower film and upper film. A sealing device for use in a deep-draw packaging machine, wherein the upper box is a bridge having a recess in its lower surface, and a sealing surface corresponding to a storage recess formed in the lower film stored in the recess. A sealer having a sealer, the sealer being accommodated in the recess, the seal surface is exposed from the lower opening of the recess, and the sealer is inserted into the recess through a holder And the holder is directed from the inner peripheral surface to the center along the conveying direction of the lower film of the inner peripheral surface of the frame and the inner peripheral surface of the frame. And a pair of support portions for output, the sealer was to be mounted in said recess in a state in which a pair of side edges is supported by the pair of supports.

  Since the sealer is stored in the recess through the holder, for example, even when the outer dimension of the sealer is smaller than the opening of the recess, the distance between the pair of support portions of the holder is narrowed according to the outer dimension By doing this, the sealer can be stored in the recess without falling from the recess. In addition, since the sealer is mounted via the holder, for example, the holder may be clamped, biased and fixed by clamping, etc., and the sealer may be prevented from being applied with the biasing force. Furthermore, when it is desired to raise and lower the sealer at the time of sealing processing, it can be coped with by mounting the sealer so that it can be raised and lowered with respect to the holder even when the holder is fixed.

  In the embodiment, the support portion corresponds to the support plate portion 48b, but the support portion does not necessarily have to be a single plate as in the embodiment, and for example, a plurality of rod-like members are protruded as comb teeth It may be configured. It is better to use a single plate as in the embodiment, as it can hold firmly and eliminate gaps. In addition, the support portion of the holder only needs to be capable of supporting the sealer, and does not necessarily have to be always in contact with the sealer. For example, when operating as a sealing device as in the embodiment, You may make it stand away from the support part.

  (2) When replacing the sealer with another sealer having different lengths in the transport direction of the lower film, it is preferable to mount in the recess using holders having different spacings between the pair of supports. . In this way, for example, when the product to be packaged changes, the external dimensions of the sealer change, for example, when a sealer having a short length in the transport direction is used, a pair of holders in use Although the sealer can not be supported if the distance between the support portions is larger, it can be supported by using a holder in which the distance between the pair of support portions according to the sealer length is different. Therefore, for example, by setting the inner dimension of the recess, more specifically, the length of the lower film along the transport direction to a longer length, the range that can cope with the product change may be expanded.

  (3) It is good for the holder from which the space | interval of a pair of said support part differs to be a holder comprised with another member, or a holder in which the length of the support part was adjustable. The adjustable length of the support portion may be, for example, a structure in which the support portion expands and contracts, or an attachment may be attached to the support portion of the base to change the length. If the holder has an adjustable length, the holder can be shared and replacement of only the sealer is sufficient, but using another holder is more preferable because the structure of the holder is simplified.

  (4) The bridge has a rack which can be pulled out in a direction intersecting the transport direction of the lower film, and the sealer is mounted on the rack via the holder. The sealer may be stored in the recess.

  The bridge has a rack that can be pulled out externally, and the sealer is mounted on the rack, so when replacing the sealer, pull the rack out of the bridge and expose the sealer to the outside. It becomes exchangeable. There is no need to remove the entire upper box, and the sealer can be easily replaced.

  (5) A heating unit is disposed in the recess, and the sealer accommodated in the recess is connected with its upper surface in contact with the heating unit, and replacement of the sealer cancels the connection. It is preferable that the heating is performed in a state of being separated from the heating unit.

  According to the present invention, the sealer can be mounted via the holder even if the sealer has a length in the direction along the transport direction of the film which is shorter than, for example, the size and shape of the lower opening of the recess of the bridge.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows one suitable embodiment of the deep draw packaging machine by which the sealing device for deep draw packaging machines which concerns on this invention is mounted. It is a front sectional view showing a suitable embodiment of a seal device for deep draw wrapping machines concerning the present invention. FIG. It is a perspective view. It is explanatory drawing (the 1) of an action and a function. It is explanatory drawing (the 2) of an action and a function. It is explanatory drawing (the 3) of an action and a function.

  Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings. The present invention is not limited to or interpreted as such, and various changes, modifications, and improvements can be added based on the knowledge of those skilled in the art without departing from the scope of the present invention.

  FIG. 1 shows a preferred embodiment of a deep drawing packaging machine on which the sealing device for a deep drawing packaging machine according to the present invention is mounted. The deep draw packaging machine includes a lower film supply device 10 disposed on the upstream side, a film conveyance device 13 for conveying the lower film 12 supplied from the lower film supply device 10 in the horizontal direction, and a film conveyance device 13, a molding apparatus 14 disposed on the upstream side, a product supply unit (not shown) disposed on the downstream side of the molding apparatus 14, and an upper film supply apparatus disposed at a predetermined position above the film conveyance apparatus 13. And a sealing device 17, a horizontal cutter device 18, a vertical cutter device 19 and the like in which the upper film 16 supplied from the upper film supply device 15 is sequentially disposed downstream of the covering point covered on the lower film 12. Prepare.

  The lower film supply device 10 is pulled out from a rotary support shaft 21 supporting the original fabric roll 20 in which the strip-like lower film 12 is wound in a roll shape, and the original fabric roll 20 rotating integrally with the rotary support shaft 21. The lower film 12 is fed out along a predetermined trajectory and supplied to the film transport device 13.

  The film transport device 13 includes a pair of left and right endless chains 13a disposed outside the side edges of the lower film 12, and a large number of claw members 13b attached to the endless chain 13a, and the claw members 13b The sheet is intermittently transported while grasping both side edges in the longitudinal direction of the lower film 12.

  A molding device 14 is disposed upstream of the film transport device 13 during transport. The molding device 14 is a device for molding a storage recess 12 a that protrudes downward at a predetermined position of the lower film 12. The molding apparatus 14 has an upper box 14a and a lower box 14b which are disposed above and below the lower film. Then, in the lower box 14b, a female die processed into an inner shape conforming to the outer shape of the storage recess 12a formed in the lower film 12 is disposed. On the other hand, a heat plate is contained in the upper box 14a, and the film portion of the lower film 12 sandwiched between the upper box 14a and the lower box 14b is heated and softened. Then, in the sandwiched state, for example, the inside of the lower box 14b is vacuum suctioned, and a predetermined film portion of the lower film 12 is in close contact with the inner peripheral surface of the female mold, and molded into the shape of the inner peripheral surface The recess 12a is molded. In the present embodiment, the lower box 14b is provided with two recesses in the lateral direction, and a predetermined number of storage recesses 12a are formed on the lower film 12 in one molding process.

  The product supply unit is an area for supplying a product into the storage recess 12a formed by the molding device 14. For example, a product supply device (not shown) is disposed. This product supply device is for automatically supplying a product into the storage recess 12a, and is constituted of, for example, a transfer robot, and includes an adsorption unit as a manipulator of the transfer robot. Then, a predetermined product is adsorbed and held from a group of products waiting on the side of the film transport device 13 by the suction means, and is moved along a predetermined locus to supply the product into the storage recess 12a. The product supply device may be replaced by a manual supply.

  The upper film supply device 15 includes a rotary support shaft 23 for supporting a raw fabric roll 22 in which a band-like upper film 16 is wound in a roll and an upper side drawn from the raw fabric roll 22 integrally rotating with the rotary support shaft 23. A plurality of rollers 24 and the like are provided for feeding the film 16 along a predetermined trajectory and superposing the film 16 on the lower film 12 conveyed by the film conveyance device 13. Although not shown, for example, the printing apparatus is disposed in the middle of the movement trajectory of the upper film 16. The printing device prints the date of manufacture, the expiration date, etc. of the product on a predetermined position of the upper film 16.

  The sealing device 17 sandwiches and heat-seals the predetermined positions of the lower film 12 and the upper film 16, that is, the contact portions of the two films 12 and 16 around the accommodation recess 12a from above and below. Thereby, the product is sealed in the storage recess 12a. Furthermore, the sealing device 17 has a function of suctioning and removing the air in the housing recess 12a, and the product is stored in the housing recess 12a by suctioning and removing the air in the housing recess 12a before heat sealing both films 12 and 16. It is good also as a sealing device (vacuum chamber) provided with the function to seal in a vacuum state inside.

  The horizontal cutter device 18 includes a cutter blade 18a disposed above and below the film, and a receiving plate 18b. The cutter blade 18a and the receiving plate 18b are configured to move up and down in time by an air cylinder 18c linked to each. The horizontal cutter device 18 is a push-out cutter, and the lower and upper films 12, 16 are cut along the shape of the blade portion of the cutter blade 18a. The cutter blade is provided with a linear blade for cutting the lower and upper films in the lateral direction (direction orthogonal to the transport direction), and roundness is formed at the corners of the final package. You may make it provide the edge part for R cut for doing.

  The vertical cutter device 19 includes a plurality of pairs of upper and lower disk-shaped cutters 19a each having a rotation axis in a direction orthogonal to the film transport direction, and holds the lower and upper films 12 and 16 by the upper and lower cutters 19a. Cut parallel to the transport direction. After passing through the vertical cutter device 19, the periphery of the storage recess 12a is cut in the longitudinal and lateral directions to produce individual packages. Further, the left and right side edges of the lower and upper films 12 and 16 are cut and separated by the vertical cutter device 19. The separated side edges are taken up by the take-up roller 27.

  The sealing device 17 is provided with a lower box 31 and an upper box 32 which are disposed to face each other vertically with the lower and upper films 12 and 16 interposed therebetween, and the lower box 31 moves up and down in accordance with the film transport timing. . The lower box 31 includes a box-like box main body 33 opened at the top. Like the lower box 14b of the molding apparatus 14, the box body 33 is provided on the upper surface side thereof with one recess in the left-right direction orthogonal to the film transport direction and five recesses 35 in the front-rear direction. In the recess 35, the storage recess 12a of the lower film 12 formed by the molding device 14 is inserted and arranged in the sealing process step. Further, a rubber receiver 37 is attached to the upper surface of the box body 33, that is, the upper surface of the peripheral wall 36 disposed around the recess 35.

  On the other hand, the upper box 32 has a recess 34a on the lower surface side of the bridge 34, and is provided with a heating plate 40 and a sealer 38 disposed so as to be movable up and down in the recess 34a. The heating plate 40 and the sealer 38 are stacked vertically, and are connected by, for example, a screw 41 and integrated while the upper surface of the sealer 38 is in contact with the lower surface of the heating plate 40 positioned above. The heat of the heating plate 40 is conducted to the sealer 38 and the lower surface of the sealer 38 is heated. The sealer 38 is also linked to the bridge 34 by means of screws 41, for example. Further, a through hole 34b is formed at a portion of the bridge 34 facing the upper side of the screw 41 connecting the heating plate 40 and the sealer 38, and the lid screw 42 is attached to the through hole 34b. When the lid screw 42 is removed, the upper end of the screw 41 is exposed through the through hole 34 b and the screw can be operated.

  Then, by raising the lower box 31, the lower and upper films 12 and 16 are sandwiched from above and below. More specifically, the film is sandwiched between the lower surface of the sealer 38 and the receiving rubber 37 provided on the upper surface of the box main body 33 opposite thereto. In addition, it is also preferable to take the structure which the whole upper side box 32 raises / lowers. Further, the sealer 38 may be configured to move up and down in the bridge 34 integrally with the heating plate 40 and the like.

  The sealer 38 is made of, for example, a heat conductive material such as aluminum, and is heated to a predetermined temperature by a heater incorporated in the heating plate 40. And in the state which pinched lower side and upper films 12 and 16 between upper box 32 and lower box 31 as mentioned above, descent upper box 32 contacts a film and heats the film concerned. That is, since the film portion sandwiched between the rubber receiver 37 and the rubber 37 is heated and pressurized, the film portions of the lower and upper films 12 and 16 are heat sealed.

  Further, a recess 38a is formed at a predetermined position on the lower surface of the sealer 38, and the film holding plate 39 is disposed in the recess 38a. The formation position of the recess 38 a (film pressing plate 39) is a position facing the recess 35 formed in the box main body 33 of the lower box 31, and the planar shape thereof is also substantially the same as the planar shape of the recess 35. There is. Thereby, at the time of a sealing process, the film holding | maintenance board 39 contacts the film site | part of the upper film 16 which opposes the accommodation recessed part 12a. The film holding plate 39 has low thermal conductivity, so that the heat of the sealer 38 is not easily transmitted to the film portion of the upper film 16 in contact with the film holding plate 39 so that the film holding plate 39 is not heated.

  As described above, the lower surface of the sealer 38 is provided with the recess 38a corresponding to the layout of the recess 35 of the box main body 33 of the lower box 31, and the film pressing plate 39 is disposed in the recess 38a. doing. Therefore, for example, when the dimensional shape of the package manufactured by the deep-draw packaging machine is changed, the dimensional shape and layout layout (N × M) of the recess 35 of the box main body 33 are also changed accordingly. The dimensional shape and layout (N × M) of the 38 recesses 38a also need to be changed. And when replacing the upper box 32 side conventionally, for example, the whole of the heating plate 40 and the sealer 38 were exchanged, but in the present embodiment, only the sealer 38 is exchanged, and the heating plate 40 is a different kind of sealer. Common to 38 was used. This makes many components common.

  Furthermore, in the present embodiment, the upper box 32 is provided with a rack 45 which can be pulled out on the front side of the deep-draw packaging machine, and the rack 45 is used to pull the sealer 38 forward. In the state where the rack 45 is pulled out to the front side, the space above the rack 45 is open, so the removal of the sealer 38 and the mounting of a new sealer 38 can be easily performed. The specific structure for realizing such a withdrawal method is as follows.

  As shown in FIG. 7 etc., the rack 45 is provided with a bottom plate 45a having a rectangular shape and a rectangular opening 45c at the central portion, and a side wall 45b standing on a pair of long sides of the bottom plate 45a. It has an open shape without providing a side wall. The bottom plate 45a and the side wall 45b can be formed, for example, by using a single metal plate (for example, stainless steel) and bending and raising both sides of the metal plate by pressing or the like.

  The rack 45 can be inserted into and removed from the bridge 34 along the long side or side wall 45b. Along with this, as shown in FIG. 3 and the like, on the lower surface of the bridge 34, a guide groove 34c into which the side wall 45b is inserted is formed. As shown in FIG. 6, FIG. 7, etc., this guide groove 34c opens on the front side of the deep draw packaging machine. Furthermore, one end of the slide rail 46 is fixed above the inner surface of the side wall 45 b, and the other end of the slide rail 46 is fixed at a predetermined position on the inner surface of the guide groove 34 c. As a result, the slide rack 46 is guided by the slide rail 46, and the side wall 45b moves in the guide groove 34c, and further completely pulled out to the near side, the entire rack 45 is as shown in FIG. It is located on the front side of the bridge 34, and the bridge 34 and the like are not present above the rack 45.

  Furthermore, the length of the side wall 45b is longer than the length of the long side of the bottom plate 45a (see FIG. 6 and the like), and both ends of the side wall 45b protrude outward beyond the bottom plate 45a. Further, on the upper surface along the long side of the bottom plate 45a, a plurality of (for example, two each side) positioning pins 45d are erected.

  In this embodiment, the sealer 38 is not directly mounted on the rack 45, but is mounted via the holder 48. The holder 48 has a thick frame 48a, and a pair of support plates 48b formed to project toward the inner center from the lower end side of the inner peripheral surface of the pair of long sides of the frame 48a. Prepare. An opening is formed between the pair of left and right support plates 48b. The sealer 38 is provided at its upper end with a pair of flanges 38b protruding outward at the upper end of the pair of long sides, and with the sealer 38 mounted on the holder 48, the main body of the sealer 38 is between the support plate portions 48b. By entering the space, the flange portion 38b is supported by being in contact with the upper surface of the support plate portion 48b, and the further detachment / falling is suppressed. Further, the sealer 38 is characterized in that it is not fixed to the holder 48 by a screw or other fixing means. As a result, the sealer 38 does not fall below the support plate portion 48b, but can move up and down relative to the holder 48. During operation of the packaging machine, the sealer 38 is integrally connected to the heating plate 40 by the screw 41 as described above. In this state, as shown in FIG. 3, the collar 38b is separated from the upper surface of the support plate 48b and is positioned at a predetermined upper position.

  Moreover, the holder 48 is provided with the notch part 48c in the outer peripheral surface of a pair of long sides of the frame 48a. The notch portion 48c is formed at a position corresponding to the positioning pin 45d. When the holder 48 is mounted on the rack 45, the positioning pin 45d enters the notch portion 48c and positioning in a horizontal plane is possible. Is done. The holder 48 is only from above with respect to the rack 45, and is not fixed by screws or the like. Therefore, it is fixed in the horizontal plane by the four positioning pins 45d and the notches 48c, and the movement in the vertical direction is permitted. The side surfaces of the pair of short sides of the holder 48 are provided with reverse tapered surfaces 48 d whose shape is cut off at the lower end.

  On the other hand, on the back surface of the recess 34 a of the bridge 34 (the back side of the deep-draw packaging machine), the fixing receiver 50 is disposed. The fixing receiving tool 50 has a tapered surface 50a that can be in contact with the reverse tapered surface 48d provided on the far side of the pair of short sides of the holder 48. When the rack 45 carrying the holder 48 is inserted all the way in, the reverse tapered surface 48 d of the holder 48 and the tapered surface 50 a of the fixed holder 50 are in contact with each other.

  Further, in a state where the rack 45 is housed in the bridge 34, the fixing tool 51 is attached to the front side. The fixture 51 has a rectangular parallelepiped main body, and a tapered surface 51 a is provided below one side surface (a surface facing the holder 48) of the main body. When this fixing tool 51 is inserted into the inside of the bridge 34, the tapered surface 51a of the fixing tool 51 comes into contact with the reverse tapered surface 48d of the holder 48, and when it is pushed further back from that state, the fixing is fixed. The tapered surface 51a of the tool 51 intrudes further back, and the holder 48 ascends due to the action of the tapered surface 50a and the reverse tapered surface 48d. At this time, the same action occurs between the tapered surface 50a of the back side fixed receiving member 50 and the reverse tapered surface 48d of the back side. Thus, as shown in FIG. 2 and the like, the support plate portion 48b of the holder 48 is separated from the bottom plate 45a of the rack 45 and floats, and the fixing tool 51 is fixed to the bridge 34 with a screw in that state.

  Furthermore, in the present embodiment, cylinders 53 are disposed near the four corners of the lower surface of the bridge 34, and the cylinder rods 53a of the cylinder 53 are linked to and supported by the lower surface of the bridge 34 via the connecting rods 54. Then, the cylinder 53 is operated to lift and lower the bridge 34 and the upper box 32 as a whole. As shown in FIG. 2, while the sealing device 17 is in operation, the lower surface positions of the sealer 38 and the holder 48 are lower than the upper end edge of the film transport device 13 including the endless chain 13a and the claw member 13b. If the rack 45 is to be pulled out to the front side (left side in FIG. 2) of the deep draw packaging machine as it is, it interferes with the film transport device 13 and can not be pulled out. Therefore, since the upper box 32 can be moved up and down entirely by the four cylinders 53 as in the present embodiment, for example, the upper box 32 is raised from the state shown in FIG. The rack 45 and hence the sealer 38 can be pulled out using the space above the film transport device 13.

  The bridge 34 is also bolted to a fixed plate 55 linked to the machine frame. The bolt is inserted into the bottomed through hole 34d provided near the four corners of the bridge 34, and the screw of the tip of the bolt is fastened to the female screw 55a (see FIG. 5 etc.) formed on the fixing plate 55. Thus, the bridge 34 is integrally connected to the fixing plate 55 and fixed thereto.

  Next, the operation at the time of replacement of the sealer 38 in the sealing device 17 of the embodiment described above will be described. First, from the initial state when performing the normal operation of the sealing device 17 shown in FIG. 4, the bolts at the four corners connecting the bridge 34 and the fixing plate 55 are removed to release the fixing of the bridge 34. Also, the central screw 41 is removed, and the bridge 34 and thus the heating plate 40 and the sealer 38 are connected. Along with this, the sealer 38 separates from the heating plate 40 and falls downward, and the flange 38 b of the sealer 38 is supported by the support plate 48 b of the holder 48.

  Subsequently, the fixing screw of the fixing tool 51 is removed. Then, the force holding the holder 48 between the fixing tool 51 and the fixing receiving tool 50 is released, so that the weight of the holder 48 and the sealer 38 supported thereon and the tapered surfaces 50a and 51a The holder 48 and sealer 38 are lowered while pushing the fixing tool 51 outward by the action of the reverse tapered surface 48d, and the frame 48a of the holder 48 is in contact with the bottom plate 45a of the rack 45 and is suspended. It becomes.

  At an appropriate timing of the previous stroke, the cylinder 53 is operated to raise the entire upper box 32 together with the bridge 34. As shown in FIG. 5, the distance of the upward movement may be small, and it is sufficient if the lower surface position of the rack 45 or the like is positioned above the upper end edge of the film transport device 13.

  Then, when the rack 45 is pulled forward, as shown in FIG. 6, the holder 48 supported by the rack 45 and the sealer 38 are also pulled out together. Since the holder 48 and the sealer 38 are only placed on top of each other, the sealer 38 and the holder 48 can be removed in that order (see FIG. 7).

  For example, when the dimensional shape of the package to be manufactured does not change the length (packing pitch) of the film in the transport direction and the width in the direction orthogonal to the transport direction changes, the box body 33 of the lower box 31 is formed Although the number of the recesses 35 in the orthogonal direction changes, the packaging pitch does not change. Therefore, although the number of recesses 38a provided on the lower surface of the sealer 38 changes, the outer dimensions do not change, so the holder 48 can be used as it is and only the sealer 38 is replaced.

  On the other hand, when the packaging pitch is also changed, the length of sealer 38 along the film transport direction is changed, and the holder 48 can not be inserted into the space between the pair of support plates 48b of the holder 48 currently used. Sometimes I can not do it. In such a case, a holder 48 having an opening corresponding to the size and shape of the sealer 38 is prepared, and both the sealer 38 and the holder 48 are exchanged.

  Once the sealer 38 has been replaced with the sealer 38 alone or with the holder 48 and placed at a predetermined position on the rack 45, the rack 45 is returned into the bridge 34, and the holder 51 is lifted by pushing the fixing tool 51 and screwing it. And fix it in the desired position. Thereafter, the procedure is reversed to return to the initial state.

  In the present embodiment, since the rack 45 is drawably connected to the bridge 34 via the slide rail 46, the rack 45 is easily pulled out to expose the sealer 38 and the like to the outside of the bridge 34. The sealer 38 placed on the upper side can be returned to the inside of the bridge 34, and in the exposed state, the upper space is opened, so that the sealer 38 etc can be easily detached. Therefore, replacement work of sealer 38 grade can be performed easily.

  In addition, the holder 48 can be fixed at a desired position by pushing the fixing tool 51, and the fixing can be released by releasing the pressing of the fixing tool 51. Easy to do.

  Furthermore, in the present embodiment, since the sealer 38 is attached to the rack 45 via the holder 48, it is possible to cope with different packaging pitches by replacing the holder 48 together.

  In the embodiment described above, since the sealer 38 is mounted on the rack 45 with the holder 48 interposed, the sealer 38 is made of a material having a good thermal conductivity, and the sealer 38 is not required to cope with pitch change. Cover the portion where the flat shape of 38 is in contact with the film to seal it, and make it not larger than necessary, and separate the heating / seal portion such as the fixing structure by pinching the fixing tool 51 and the fixing holder 50 By using a member (holder), it is possible to efficiently heat and easily fix.

  Furthermore, in the present embodiment, the sealer 38 can move up and down relative to the holder 48. Thus, the holder 48 is interposed to fix the holder 48. For example, when sealing the film, the sealer 38 is also lowered to seal the lower and upper films 12 and 16 from above and below. It can be applied to the device. For example, as shown in FIG. 3 and the like, a predetermined space is secured between the upper surface of the support plate portion 48b of the holder 48 and the flange portion 38b of the sealer 38 in the initial state, The sealer 38 may be moved downward together with the heating plate 40.

  In the embodiment described above, when replacing with sealers having different sizes and shapes, another holder having a support plate unit matched thereto is used, but the present invention is not limited to this, for example, A holder whose length is adjustable may be used, and when replacing the sealer, the same holder in which the length of the support plate portion is changed may be used.

  Further, although the sealer 38 is mounted on the rack 45 together with the holder 48 in the embodiment described above using the pullout rack 45, the present invention is not limited to this, and the rack may not necessarily be used. . For example, the upper box 32 may be removed and the sealer 38 with the holder 48 may be attached from the lower side of the bridge 34. However, if it is pull-out type as in the embodiment, it can be easily replaced.

  While the various aspects of the invention have been described above using embodiments and variants, these embodiments and descriptions have not been made for the purpose of limiting the scope of the invention, but rather to understand the invention. It should be added that it was provided to help. The scope of the present invention is not limited to the configurations and processes explicitly described in the specification, and includes within its scope combinations of various aspects of the present invention disclosed herein. Among the present inventions, the configuration to be patented is specified in the appended claims, but the present treatment is disclosed in the present specification even if the configuration is not specified in the claims. In the future, I would like to say that there is a possibility of claiming a configuration in the future.

12: lower film 12a: storage recess 13: film transfer device 16: upper film 17: seal device (seal device for deep drawing packaging machine)
31: lower box 32: upper box 33: box main body 34: bridge 38: sealer 38a: recess 38b: ridge portion 39: film holding plate 40: heating plate 45: rack 46: slide rail 48: holder 48d: reverse taper Surface (inclined surface)
51: Fixing tool 51a: Tapered surface (inclined surface)
53: Cylinder

Claims (5)

A sealing apparatus for use in a deep-draw packaging machine comprising a lower box and an upper box disposed opposite to each other with the superposed lower film and upper film interposed therebetween,
The upper box includes a bridge having a recess in the lower surface, and a sealer having a sealing surface corresponding to a storage recess formed in the lower film stored in the recess.
When the sealer is housed in the recess, the sealing surface is exposed from the lower opening of the recess.
The sealer is accommodated in the recess via a holder,
The holder includes: a frame having an opening at the center; and a pair of support portions projecting toward the center from the inner and the outer peripheral surfaces along the conveying direction of the lower film of the inner peripheral surfaces of the frame Equipped
The sealer for a deep drawing and packing machine is characterized in that the sealer is mounted in the recess with a pair of side edges supported by the pair of support portions.   When replacing with another sealer having different lengths in the direction along the transport direction of the lower film, the pair of supports are mounted in the recess using holders having different spacings. The sealing device for a deep draw packaging machine according to claim 1.   3. The deep-draw packaging machine according to claim 2, wherein the holders having different spacings between the pair of support portions are holders formed of separate members or holders having adjustable lengths of the support portions. Sealing device. The bridge has a rack which can be pulled out in a direction intersecting the transport direction of the lower film;
The depth according to any one of claims 1 to 3, wherein the sealer is accommodated in the recess with the sealer mounted on the rack via the holder. Sealing device for draw-wrapping machines. A heating unit is disposed in the recess, and the sealer accommodated in the recess is connected with its upper surface in contact with the heating unit,
The sealing device for a deep drawing packaging machine according to any one of claims 1 to 4, wherein when the sealer is replaced, the connection is released to be separated from the heating unit.

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