• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The film dispenser (1) is designed for space-optimized rotatable storage of a larger film roll (15) with cling film and a smaller film roll (13) with aluminum foil according to the film requirements in commercial kitchens. The foil dispenser is easy to make and easy to use.
    公开号:CH714148A2
    申请号:CH00003/18
    申请日:2018-01-03
    公开日:2019-03-15
    发明作者:Forrer Beat；Walder Max
    申请人:Alu Vertriebsstelle Ag；
    IPC主号:
    专利说明:

    Description: The invention relates to a film dispenser according to the preamble of patent claim 1.
    In commercial kitchens cling films and aluminum foils are widely used. These films are usually stored rolled up on a core in a dispenser or film dispenser. Such film dispensers can be designed to receive one or more film rolls. The provision of two different types of film in a common film dispenser has the advantage that at the place of use the respective desired film is quickly and easily available. On the other hand, such film dispensers can often be unwieldy and bulky.
    The Swiss Patent Application CH 703 992 A2 discloses such a film dispenser, which is designed to receive two film rolls. This film dispenser includes a metal housing with a hinged housing cover and also with hinged front. On the insides of the two side walls U- or V-shaped sheets are welded. These serve as a roll holder or bearing for inserting the end portions of the core sleeves, which project frontally on the film rolls. The bearings are arranged so that the rear film roll may have a larger diameter than the front film roll. The rear film roll can be inserted from the top into the rear bearings after opening the hinged lid. To insert the front film roll into the front bearings, however, the front flap must be opened. The housing bottom is raised so that the end of the front foil is more easily gripped in the area of a gripping opening at the front edge of the floor. In such film dispensers, the space for storing the film rolls is not optimally utilized. In addition, the core sleeves of the film rolls when pulling out of film sections jump out of the camps. Furthermore, the production of such a film dispenser is comparatively complicated and expensive.
    An object of the present invention is therefore to provide a film dispenser, which is designed for space-optimized recording two rolls of film, and is easy to manufacture and easy to use.
    This object is solved by the features of patent claim 1.
    The film dispenser comprises an elongated housing which defines a receiving space for two film rolls. The film rolls can be rotatably mounted on staggered front and rear roll holders or bearings in the housing.
    The film dispenser is designed so that it can accommodate a larger and heavier role with typically 300 m to 500 m cling film and a smaller and lighter role with typically 40 m to 70 m aluminum or aluminum foil. These foil stocks correspond approximately to a monthly consumption in a commercial kitchen. The larger and heavier roll with cling film comprises a stable and relatively heavy core sleeve whose outside diameter is in the order of 40 mm to 50 mm and is typically 47 mm. The maximum outside diameter of a still unused film roll with cling film is 101 mm. The smaller and lighter roll with aluminum foil comprises a less stable and comparatively light core sleeve whose outside diameter is of the order of 20 mm to 30 mm and is typically 27 mm. The maximum outside diameter of a still unused film roll with aluminum foil is 42 mm.
    The core sleeve of each film roll is longer than the width of the respective film strip, so that the ends of the core sleeve protrude on both sides over the rolled up film strip. The roll holders are designed and arranged so that the film rolls can be stored in a space-saving and rotatable manner in the housing. In particular, the roll holders can be arranged and formed adjacent or adjacent to two opposite side walls of the housing such that the end regions of the core sleeves are inserted from above into these roll holders when the film rolls are inserted.
    The housing comprises a housing front with a removal opening for film from the front film roll. According to the invention, a bearing surface projects into the interior of the housing at the lower edge of this removal opening. This support surface supports the end portion of the front foil strip and keeps it to pull out in an ergonomic position spaced from the housing bottom. Preferably, the support surface is interrupted in a central portion by a further reaching to the housing bottom out recess. In this area, a distance to the housing bottom lying end portion of the film from above and from below freely accessible and can be easily grasped.
    The upper edge of the removal opening comprises a device for separating out of the housing extracted film sections. Preferably, the upper edge of the removal opening is serrated. Particularly advantageously, this upper edge is also convexly curved, so that the removal opening in the middle is the highest. This has the effect that, after the separation of a film section, the leading edge of the remaining film supply is slightly convexly curved and protrudes furthest in the area of the gripping opening. This additionally facilitates the renewed extraction of a further film section from the film dispenser.
    Film from the rear film roll can be pulled out of the housing through a clearance above the front of the housing. Preferably, a cutting device is attached to an upper edge of the housing front, as is known, for example, from CH 703 992 A2.
    The housing bottom defines the lowest level of the housing. Therefore, the housing can be made relatively compact and the space occupied by the housing can be optimally used for storing the film rolls.
    Optionally, on the outside of the housing bottom, e.g. self-adhesive slip-resistant feet attached. This allows a free placement of the film dispenser at the desired location. Preferably, the housing cross-section has the shape of a rectangular trapezium. For an optional attachment to a wall mounting openings may be formed in the housing rear wall.
    The housing and the roll holder may be made of metal, in particular stainless steel. Preferably, the housing comprises at the top a charging opening, which is covered by a hinged lid on the housing body. Such housings are very stable and also preferred in terms of hygiene, since they can be easily cleaned. In addition, such housing can be easily and inexpensively manufactured.
    The front roller holders are intended for receiving the roller with the smaller maximum outer diameter, the rear roller holder for receiving the roller with the larger maximum outer diameter. The front roller holders are disposed at a lower level with respect to the inside of the case bottom than the rear roller holders. This ensures that the two film rolls can be stored in a space-saving manner in the housing with the maximum outside diameters permitted for the respective film rolls. In particular, the front film roll then has only a small distance to the housing bottom. This distance is preferably less than 5 mm and is e.g. in the range of 1 mm to 3 mm. The level of the rear roller holder and its relative position with respect to the front roller holder is chosen so that the mutual distance between two film rolls with the maximum allowable outside diameters (typically 101 mm and 42 mm) is small. This distance is preferably less than 5 mm and is e.g. in the range of 1 mm to 3 mm. The distances between this rear film roll to the housing bottom, to the rear wall and optionally to a cover of the housing are small and are for example in the range of about 3 mm to 8 mm.
    Preferably, a respective front and a rear roller holder are arranged as channel-like recesses on the upper end face of a common bearing plate. As a result, the relative position of these roll holders and their arrangement on the plate can be specified exactly. The bearing plates may for example comprise angled portions and be connected by rivets or by other joining techniques with the housing bottom or the respective adjacent side walls of the housing. The bearing plates can be positioned exactly within the housing. Alternatively, the bearing plates could also be used directly as reshaped regions, e.g. be formed of the side walls, the rear wall or the bottom of the housing.
    Preferably, the groove-like recesses are so deep or the front side adjacent to the recesses plate areas or retaining elements so high that thereby jumping out of the core sleeves can be prevented from the roll holders when the films are pulled out of the film dispenser.
    The rear roller holders, which are intended for the heavier rolls of film, may, for example, have a U-shaped cross-section, the front leg being the retaining element. In general, it is sufficient if this front leg extends to a level that lies between the single and the double radius of curvature of the recess above the lowest level of the recess. This radius of curvature essentially corresponds to the diameter of the male core sleeve, taking into account the required tolerances.
    In the case of the front roller holders, the retaining element preferably extends to a level which lies above a male core sleeve to be accommodated. In addition, this retaining element may have a kink or a curvature, which additionally improves the retention effect. Even with low weight of the film roll and at an unfavorable draw angle can be reliably prevented so that the core sleeves of the front film roll jump out of the front roll holders.
    Optionally, the film dispenser include a hold-down, which is arranged in the housing, that it exerts an additional compressive force on a mounted in the front roller holders front film roll from above. This compressive force is preferably determined by the weight of the blank holder and / or by the restoring force of a spring. When pulling film sections from the front film roll from the housing, the hold-down exerts a braking force on this film and on the core sleeve mounted in the roll holders. This facilitates the separation of film sections. Even if the film supply is almost exhausted and only a few meters, and if the weight of the front film roll is correspondingly small, film sections can still be easily and reliably separated at a tooth edge.
    Another advantage of such hold-downs is that they help to keep the end portion of the front foil band readily accessible at the removal opening. Restoring forces acting on the end section of the film strip are compensated by the force of the blank holder, so that the end section of the film strip remains in the desired desired position. Such restoring forces can e.g. be electrostatic attraction forces of a neighboring cling film and / or forces that are due to an aluminum foil by a plastic and / or elastic deformation during winding or unwinding of the film strip.
    Preferably, the hold-down comprises a parallel to the axis of the film roll oriented rod. This can e.g. be pivotally mounted on the housing. After separating a pulled-out film section, the rod rests on the end section of the film strip and pushes it back down into the desired position in the bearing surface.
    The film rolls are inserted from above into the housing. First, the front film roll is inserted into the housing. It glides along a guide ramp of the front recess to the lowest possible level. Subsequently, the rear film roll is also inserted from above into the rear roll holder.
    Based on some figures, an embodiment of the invention will be described in more detail below. Showing:
    1 is a perspective view of a film dispenser equipped with film rolls with the housing cover open, FIG. 2 is a front view of the film dispenser of FIG. 1,
    3 is a side view of the film dispenser of FIG. 1,
    4 shows a cross section of the film dispenser of FIG. 1,
    5 shows a cross section of the film dispenser from FIG. 1 with inserted film rolls, FIG.
    6 shows a hold-down,
    7 shows a cross section of a film dispenser with the hold-down of FIG. 6.
    An exemplary embodiment of a film dispenser 1 is shown in Fig. 1 in a perspective view. Fig. 2 shows the film dispenser 1 from the front, Fig. 3 in a side view. The foil dispenser comprises a housing made of metal, in particular of stainless steel. It comprises a substantially rectangular housing bottom 3, a rectangular rear wall 5, two side walls 7a, 7b whose basic shape is a rectangular trapezoid, and a housing front 11 which together define a receiving space. At the top of the rear wall 5, one of two mounting openings 6 is visible in FIG.
    At the rear upper corner regions of the side walls 7a, 7b, a housing cover 9 is hingedly hinged. It is partially opened in the perspective view of FIG. 1, so that an open film roll 13 and rear film roll 15 mounted in the housing are visible through an exposed loading opening arranged at the top of the housing. The film rolls 13, 15 each comprise a core sleeve 13a, 15a (FIG. 5) onto which the respective film strip is wound into a supply of film. The length L1 of the housing is for example 360 mm, the width B1 about 170 mm, the height H1 about 110 mm. The housing cover 9 can be opened and closed by a rear rod 8, which extends in the longitudinal direction of the housing and is attached to the two side walls 7a, 7b. In the same way, a front rod 10 is located further to the front of the housing. It serves on the one hand for placing the housing cover 9 when it covers the charging opening, and on the other hand for supporting an end portion of the rear foil strip when it is pulled out through an opening gap between the housing cover 9 and the housing front 11 from the housing. At the upper edge 12 of the housing front 11, a cutting device with a slidably mounted along a guide rail cutting blade is preferably attached (not shown). Such a cutting device, as known for example from CH-699 230-A2, may also be part of the film dispenser 1. The housing front 11 may for example comprise an upwardly bent portion of the housing bottom 3, wherein the bending angle α is preferably between about 90 ° and 110 °, so that the housing front 11 is slightly inclined backwards and thus more accessible. Between the housing bottom 3 and the upper edge 12, the housing front 11 comprises a removal opening 23 for pulling out an end portion of the front foil strip. The removal opening 23 extends over a length L2, which is slightly shorter than the length L1 of the housing, so that the housing front 11 on both sides of the removal opening 23 comprises about 10 mm to about 40 mm wide edge regions. At a lower edge of the removal opening 23, two portions of a bearing surface 24 project from the front side of the housing into the receiving space at a level H2 above the housing bottom 3. The level H2 can e.g. between about 25 mm and 50 mm above the inside of the housing bottom 3. Preferably, the support surface 24 has a slight slope between 0 ° and about 10 ° relative to the housing bottom 3 in the direction of the receiving space. The end portion of the film strip is better on the support surface 24 and is prevented from being further retracted into the receiving space. The arrangement and configuration of the support surface 24 is preferably matched to the front film rolls 13 to be used: The rear edge of the support surface 24 is approximately at the upper level of the core sleeve 13a (FIG. 5) of a maximum filled, stored in the housing front film roll 13 and has only a small distance of, for example, 1 to 3 mm to this front film roll 13 with maximum allowable outside diameter. Between the two sections of the support surface 24, the housing front 11 comprises a gripping opening 25. There, the lower edge of the removal opening 23 lies at a lower level H4, which is located between the housing bottom 3 and the level H2 of the adjacent areas of the support surface 24. In the region of this gripping opening 25, a resting on the support surface 24 end portion of the film strip from above and from below can be easily taken.
    The upper edge 22 of the removal opening 23 is preferably formed with teeth or teeth as a tear-off for aluminum foil. Particularly suitable are slightly convexly curved Abreisskanten, as shown in Figs. 1 and 2. This causes the end portion of the rolled-up film strip to be more easily grasped at the gripping opening 25 after separating a film section in the central region of the housing. The lowest level H3 of the top edge 22 is preferably about 15 mm to 25 mm above the level H2, the highest level or vertex of the curved top edge 22, e.g. 5 mm to 10 mm higher.
    Fig. 4 shows the film dispenser 1 also in a side view, but without the side wall 7a, so that the receiving space is visible. Fig. 5 corresponds to the arrangement in Fig. 4, wherein film rolls 13, 15 are mounted in the receiving space.
    Immediately adjacent to the side walls 7a, 7b or at a small distance to plate-shaped support 27 are arranged in the receiving space. On an upper end face of each carrier 27, a respective front roller holder 29 and a rear roller holder 31 in the form of groove-like recesses are formed.
    The recess of the rear roller holder 31 has an egg-shaped cross-section and is designed for receiving and rotatable bearings of a core sleeve 15a, whose outer diameter is typically 47 mm. In a rear leg 33, which limits the recess rear, the support 27 has a maximum height H5 with respect to the inside of the housing bottom 3. The height H6 of a central leg 35, which limits the front recess is smaller than the maximum height H6. The lowest level H7 of the recess is deeper than the height H6 of the middle leg 35 by more than half of the typical outgoing diameter of a male core sleeve 15a. This ensures sufficient securing of the core sleeve 15a rear roller holder 31.
    The recess of the front roller holder 29 comprises, starting from the middle leg 35, a sloping forward ramp 37, which extends to a horizontal base portion 39 at a lowest level H8 of this recess. At the front adjacent to this base portion 39, a retaining element 41 projects up to a level H9. It is H5> H6> H9> H7> H8. Preferably, the retaining element 41 is formed like a hook, wherein a first inclined portion 41a extends to the housing front 11 and wherein a subsequent thereto second portion 41b is aligned approximately parallel to the ramp 37. If the core sleeve 13a of a front film roll 13 is mounted in the front roll holder 29, the retaining element 41 projects beyond this core sleeve 13a. This causes the core sleeve 13a of the front film roll 13 to not be able to pop out of the front roll holder 29 when pulling and separating film portions.
    The angled retaining element 41 also acts as a brake when pulling out aluminum foil from the front film roll 13. When pulling and tearing a film section of the front film roll this film section is slightly stretched. Thereby, it can be prevented that the front film roll 13 rotates uncontrollably when a tensile force is applied to the end portion of the film. Thanks to this braking effect, film sections can be separated in a controlled manner, resulting in a perfect tear-off edge.
    To insert a front film roll 13 in the front roller holder 29, this film roll 13 is inserted from above into the housing and then slides along the ramps 37 in the desired position. If the film supply of the rear film roll 15 is so large that it would hinder the insertion of the front film roll 13, first the rear film roll 15 is removed from the housing and inserted into the rear roll holder 31 after the introduction of the front film roll 13.
    Fig. 6 shows a hold-down device 43 in the form of a substantially U-shaped bracket. On either side of a central straight section 45, the bracket each includes a Z-shaped lever arm 47.
    The hold-down 43 is preferably made of steel or stainless steel. Its diameter can e.g. in the range of 3 mm to 8 mm, preferably in the range of 4 mm to 6 mm. Such hold-downs 43 have sufficient mass for holding down film sections and can be produced inexpensively. The surface of the blank holder 43 is smooth. As a result, it can be prevented that a film section breaks uncontrollably when it is pulled out of the housing.
    As shown in Fig. 7, such hold-downs 43 may be e.g. be mounted in holes 49 in two opposing supports 27 pivotally mounted in the housing. The end portions of the lever arms 47 protrude from inside the housing into the holes 49. Alternatively, such lever arms 47 could also be mounted in bores on the side walls of the housing (not shown). In further alternative embodiments, the lever arms could also be C-shaped and engage from the outside in bores 49 on the side walls spaced from the carriers 27 (not shown).
    The hold-down device 43 is pivotably mounted in the housing about a pivot axis defined by the bores 49. In Fig. 7, the hold-down 43 is shown in two pivotal positions. In the first pivot position of the hold-down device 43 is shown by a solid line. In this case, the straight portion 45 rests on the rolled-up foil strip of the front film roll 13. In the second pivoting position, the hold-down device 43 swung down by a swivel angle α is shown by a broken line. The film supply is completely used up here, so that the straight section 45 rests on the core sleeve 13a. Preferably, the hold-down device 43 is formed and arranged so that the straight portion 45, regardless of the respective film supply in the direction of the removal opening 23 offset from the axis of rotation Z of the front film roll 13 rests on the film strip. This causes the hold-down device 43 can fulfill its intended purpose even with low film supply. The periphery of the core sleeve 13a restricts the pivoting range of the hold-down device 43. Thus, there is no danger that the hold-down device 43 could carry out a further inward pivotal movement, thereby pulling the end section of the foil strip into the housing. The hold-down 43 may also be formed in other ways. It is essential that the hold-down 43 is formed and in the housing
    权利要求:
    Claims (10)
    [1]
    claims
    A film dispenser (1), comprising an elongated housing having a substantially rectangular housing bottom (3), a rear wall (5), two side walls (7a, 7b) and a housing front (11) which together define a receiving space, wherein on both sides in this receiving space depending a front roller holder (29) and a rear roller holder (31) are arranged transversely to the longitudinal direction of the housing offset from each other, said roller holder (29, 31) for rotatably supporting a front film roll (13) and a rear film roll (15) in the housing, and wherein in the housing front (11) a removal opening (23) is excluded, which extends in the longitudinal direction of the housing, characterized in that a lower edge of the removal opening (23) at least a portion having a support surface (24) comprises, which at a level (H2) spaced above the housing bottom (3) protrudes into the receiving space.
    [2]
    2. Film dispenser (1) according to claim 1, characterized in that the lower edge of the removal opening (23) comprises at least a portion having a gripping opening (25), wherein the lower edge of this gripping opening (25) at a lower level (H4) on the housing bottom (3) is located as a level (H2) of the support surface (24).
    [3]
    3. A film dispenser (1) according to any one of claims 1 or 2, characterized in that in the receiving space adjacent to or spaced from each of the two side walls (7 a, 7 b) each a carrier (27) is arranged, and that each of these carriers (27). one of the front roller holder (29) and one of the rear roller holder (31).
    [4]
    4. foil dispenser (1) according to one of claims 1 to 3, characterized in that the carrier (27) comprises a plate which is arranged parallel to the respective adjacent side wall (7a, 7b) and with the housing bottom (3) or with this adjacent Sidewall (7a, 7b) is connected, wherein the upper end face of the plate has a profile with a front, upwardly open recess which defines the front roller holder (29), and with a rear, upwardly open recess, the rear roller holder (31).
    [5]
    5. foil dispenser (1) according to claim 4, characterized in that the recess in each of the front roller holder (29) has a low level (H8) above the housing bottom (3), which is lower than a tiefstlie-ing level (H7) the rear roller holder (31).
    [6]
    6. A film dispenser (1) according to any one of claims 4 or 5, characterized in that the recess in each of the rear roller holder (31) by a rear leg (33) and by a central leg (35) is limited, wherein the maximum height (H5) of the rear leg (33) above the housing bottom (3) is greater than the maximum height (H6) of the middle leg (35).
    [7]
    7. A film dispenser (1) according to claim 6, characterized in that the recess in each of the front roller holder (29) from the central leg (33) and of a retaining element (41) formed as a front limb is limited, wherein the maximum height (H6 ) of the middle leg (33) is higher than the maximum height (H9) of the retaining element (41).
    [8]
    8. film dispenser (1) according to claim 7, characterized in that the retaining element (41) is hook-shaped, with a at the lowest area of the front roller holder (29) subsequent first section in the direction of the housing front (11) extends upward and a subsequent second section of the housing front (11) away.
    [9]
    9. foil dispenser (1) according to claim 7 or 8, characterized in that the central leg (35) comprises an obliquely forwards to a lowermost base portion (39) of the front roller holder (29) sloping ramp (37).
    [10]
    10. Film dispenser (1) according to one of claims 1 to 9, characterized in that in the housing a hold-down (43) is arranged movable so that it is mounted on a in the front roller holders (29) film roll whose outer diameter is at least 20 mm to be able to exercise a bearing force.
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    同族专利:
    公开号 | 公开日
    CH714138A2|2019-03-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2020-03-13| PFA| Name/firm changed|Owner name: STAR FOIL-SYSTEMS AG, CH Free format text: FORMER OWNER: ALU-VERTRIEBSSTELLE AG, CH |
    优先权:
    申请号 | 申请日 | 专利标题
    CH01132/17A|CH714138A2|2017-09-12|2017-09-12|Foil dispenser.|EP18178472.9A| EP3453659A1|2017-09-12|2018-06-19|Film dispenser|
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