CN102548735B - 用于焊接和分割用于包装的包装材料的装置和方法 - Google Patents

用于焊接和分割用于包装的包装材料的装置和方法 Download PDF

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CN102548735B
CN102548735B CN201080044465.7A CN201080044465A CN102548735B CN 102548735 B CN102548735 B CN 102548735B CN 201080044465 A CN201080044465 A CN 201080044465A CN 102548735 B CN102548735 B CN 102548735B
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sonotrode
cutter
anvil block
packaging material
packaging
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CN102548735A (zh
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J·伊佩斯
U·维杜威尔特
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Robert Bosch GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/087—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using both a rotary sonotrode and a rotary anvil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81417—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled being V-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83513—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
    • B65B51/225—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding by ultrasonic welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/306—Counter-rotating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7443—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc by means of ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
    • B29C66/9516—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools by controlling their vibration amplitude

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

本发明涉及一种用于焊接和分割用于包装的包装材料(4)的装置，包括：用于封接所述包装材料(4)的超声波焊接装置(2)，该超声波焊接装置具有超声焊极(3)和砧座(5)，其中，所述超声焊极(3)能够围绕第一旋转轴线(X)旋转并且所述砧座(5)能够围绕第二旋转轴线(Y)旋转；和用于分割所述包装材料(4)的、具有至少一个刀(7)的切割装置(6)，所述切割装置设置在所述砧座(5)中，其中，所述至少一个刀(7)这样地设置在所述砧座(5)中，使得在所述超声焊极(3)和所述刀(7)的刀刃(8)之间维持一个最小距离(S)，从而所述包装材料(4)能够在所述超声焊极(3)和所述刀(7)之间没有接触的情况下被切断。

Description

用于焊接和分割用于包装的包装材料的装置和方法
技术领域
本发明涉及一种用于以组合的超声波焊接装置和切割装置焊接和分割用于包装的包装材料的装置和方法，其尤其是用在软管袋装机中。
背景技术
在现有技术中软管袋装机是公知的，其包装甜食和其它物品。在此通常由薄膜通过成形肩制造细长的封闭软管，该软管的一个敞开端部借助超声波焊接装置通过横向封接缝封接，该超声波焊接装置包括超声焊极和砧座。包装材料在超声焊极和砧座之间在此通过这两个部件的接触被焊接。在填充之后该软管在填充区域上面然后通过另外的横向封接缝封闭成软管袋。此外通常设置具有刀的切割装置，以便分割仍连在一起的袋。由于刀与超声焊极的接触导致磨损现象，使得刀在一定的使用时间之后必须被更换。另外例如由WO2008/102250已知，在超声波刀具中使用专门的硬质合金刀片，以减少由于接触产生的磨损。
发明内容
根据本发明的具有权利要求1的特征的装置相对于现有技术具有优点，即该装置能够在超声焊极和设置在砧座中的刀之间没有机械接触的情况下实现对用于包装、尤其是软管袋的包装材料的焊接和分割。根据本发明该装置为此具有一个用于封接包装材料的、带有超声焊极和砧座的超声波焊接装置，其中，超声焊极能够围绕第一旋转轴线旋转并且砧座能够围绕第二旋转轴线旋转。此外该装置具有用于分割包装材料的、具有至少一个刀的切割装置，所述切割装置设置在砧座中。在此，所述至少一个刀这样地设置在砧座中，使得在超声焊极和刀的刀刃之间维持一个最小距离，从而包装材料能够在超声焊极和刀之间没有接触的情况下被切断。由此能够省去在现有技术的装置中的附加部件、例如硬质合金刀片，以免由于超声波刀具的接触产生磨损。根据本发明的装置还具有高的使用寿命。
从属权利要求示出本发明的优选扩展构型。
根据本发明的一种优选设计方案，该装置另外包括调节装置，所述调节装置在砧座的径向方向上调节刀在砧座中的位置。由此能够以简单方式使刀位置根据待分割的包装材料适配于超声焊极的振幅。由此显著地减小该装置的改装时间，这有助于提高生产的成本效率。
还优选的是，该刀具有附加刀刃，以便在包装材料中构成附加切口、尤其是撕裂切口。通过附加刀刃能够在分割两个包装的同时另外开设出撕裂辅助部。由此能够减少制造包装所需的工作步骤或者缩短所需的时间间隔。
优选地，刀仅稍微地、尤其是以5μm至50μm、优选10μm至20μm从砧座的面向超声焊极的表面突出。由此该刀能够以该尺寸将包装材料引到超声焊极上，在超声焊极和砧座之间没有压紧力的情况下超声焊极的高频振动切断该刀的刀刃上的包装材料。
根据本发明的另一种优选的设计方案，超声焊极的指向砧座的表面面状地无空槽地构成。该简单造型显然有助于改善封接缝质量和超声焊极元件的更低廉的制造成本。
根据本发明的另一种优选的设计方案，超声焊极以钝角屋顶形地构成。由此能够将装置在焊接和分割包装材料时的旋转运动减小到小的角度尺寸并且整个生产流程加速。
优选地，刀固定地支承在切割装置中。由此能够省去在刀和砧座之间用于在超声焊极和砧座之间振动去耦合的弹性元件，这有助于进一步简化该装置和降低该装置的成本。另外由此简化刀的更换和校准。
另外优选切割装置设置在砧座的第一封接区域和第二封接区域之间。由此实现该装置的特别紧凑的结构。
本发明还涉及一种用于焊接和分割包装材料的方法。在此根据本发明如下地实现对包装的可靠封接和无接触且无磨损的分割，即在第一方法步骤中将包装材料定位在超声波焊接装置的超声焊极和砧座之间并且封接前面的包装的脚缝。接着在前面的包装和后面的包装之间切断包装材料，其中，不仅由超声焊极围绕第一旋转轴线而且由砧座围绕第二旋转轴线在包装材料的进给方向上分别执行旋转。切割装置的从砧座的面向超声焊极的表面突出的刀在此接触包装材料并且向着超声焊极的方向引导包装材料。超声焊接将包装材料置于振动中，使得包装材料被刀切断。在此，在超声焊接和砧座的任何位置中在刀和超声焊极之间都维持一个最小距离，从而在超声焊极和刀之间不发生接触。在最后的方法步骤中，封接后面的包装的头缝。
还优选的是，切割装置的切割力小于超声波焊接装置的封接力。这有助于改善包装的头缝和脚缝的封接质量。另外该刀优选是可调的，使得最小距离的大小能够适配于超声焊接的振幅并且根据包装材料的材料厚度和材料特性适配并且能够被校准。
附图说明
下面借助附图详细地说明本发明的实施例。在附图中：
图1示出在第一位置中的根据本发明的装置的示意性剖视图；
图2示出在第二位置中的图1的装置的示意性剖视图；
图3示出在第三位置中的图1的装置的示意性剖视图；和
图4示出图1的装置的封接工具的放大的示意性剖视图。
具体实施方式
下面参照图1至4详细地描述根据本发明优选实施例的用于焊接和分割用于包装的包装材料的装置1。
如图1所示，用于焊接和分割包装材料的装置1包括具有超声焊极3和砧座5的超声波焊接装置2，形成前面的包装14和后面的包装15的包装材料4在用箭头标识的输送方向F上从超声焊极和砧座之间穿过。超声焊极3能够围绕第一旋转轴线X旋转并且砧座5能够围绕第二轴线Y旋转。
在砧座5内部设置具有刀7和调节装置9的切割装置6，借助该调节装置固定刀7以及在砧座5的径向上调节该刀。切割装置6设置在砧座5的第一封接区域12和第二封接区域13之间。在根据本发明的装置的一种替换实施方式中，在砧座5中也可以设置多个刀或一个具有附加刀刃的刀7，例如以便制造附加切口、尤其是撕裂切口。
如由图4的放大的示意性剖视图所示，刀7从砧座5的面向超声焊极3的表面10突出。在此，在以振幅D振动的超声焊接3的用虚线象征地示出的最大偏移时，在刀7的刀刃8和超声焊极3的顶点20之间维持一个最小距离S。该最小距离S优选位于5μm至50μm的范围中。如由图4还可看到，超声焊极的指向砧座5的表面11没有空槽且以角度α屋顶形地以小的斜率构成。该角度优选位于165°至175°的范围中并且在图4中举例地以α＝172°示出。
包装的包装材料4的焊接和分割在三个步骤或位置中进行，这三个位置在图1至3中示出。在图1中所示的超声波焊接装置2的第一位置中，首先在第一封接区域12上封接前面的包装14的脚缝16，该脚缝在超声焊极3和砧座5之间固定。
在图2中所示的超声波焊接装置2的第二位置中，包装材料4在前面的包装14和后面的包装15之间被切断。为此，超声焊极3在箭头P1的方向上执行围绕其旋转轴线X的旋转并且砧座5在箭头P2的方向上执行围绕其旋转轴线Y的旋转，根据在图4中所示的实施例分别执行8°的旋转。由此超声焊极3的表面11的顶点20(见图4)和刀刃8在径向方向上相对。在图4中出于清楚的考虑没有示出的包装材料通过砧座5的旋转被刀7向着超声焊极3的方向提升或引导并且支承在刀刃8上。由于超声焊极3的振动，包装材料4在顶点20和刀的刀刃8之间被切断，其中，最小距离S小于或最多等于包装材料的材料厚度，从而在超声焊极3和刀7之间不发生机械接触。
在图3中所示的超声波焊接装置2的第三位置中，后面的包装15的头缝在第二封接区域13上被封接。为此，超声焊极3和砧座5分别在箭头P1或P2的方向上执行围绕其旋转轴线X或Y的另外的8°旋转并且在超声焊极3和砧座5之间封接后面的包装15的头缝17。
根据本发明的装置可以在传统的旋转的软管袋装机中使用或改装并且能够以最小切割力实现对包装材料的无接触的且无磨损的分割，最小切割力小于用于制造头缝和脚缝的封接力。由于超声波封接工具的旋转运动最小，能够实现非常短的工作记录和相应高的生产量。

Claims (12)

1.用于焊接和分割用于包装的包装材料(4)的装置，包括：
用于封接所述包装材料(4)的超声波焊接装置(2)，所述超声波焊接装置具有超声焊极(3)和砧座(5)，其中，所述超声焊极(3)能够围绕第一旋转轴线(X)旋转并且所述砧座(5)能够围绕第二旋转轴线(Y)旋转，和
用于分割所述包装材料(4)的、具有至少一个刀(7)的切割装置(6)，所述切割装置设置在所述砧座(5)中，
其中，所述至少一个刀(7)这样地设置在所述砧座(5)上，使得在所述超声焊极(3)和所述刀(7)的刀刃(8)之间维持一个最小距离(S)，从而所述包装材料(4)能够在所述超声焊极(3)和所述刀(7)之间没有接触的情况下被切断，其特征在于，所述超声焊极(3)的指向所述砧座(5)的表面(11)面状地且无空槽地构成，和/或所述超声焊极(3)以钝角屋顶形地构成。
2.根据权利要求1所述的装置，还包括调节装置(9)，所述调节装置在所述砧座(5)的径向方向上调节所述刀(7)在所述砧座(5)中的位置。
3.根据权利要求1或2所述的装置，其特征在于，所述刀(7)具有附加刀刃，以便在所述包装材料(4)中构成附加切口。
4.根据权利要求1或2所述的装置，其特征在于，所述刀(7)从所述砧座(5)的面向所述超声焊极(3)的表面(10)突出。
5.根据权利要求1或2所述的装置，其特征在于，所述超声焊极(3)和所述刀(7)的刀刃(8)之间的所述最小距离(S)位于5μm至50μm的范围中。
6.根据权利要求1或2所述的装置，其特征在于，所述刀(7)固定地支承在所述切割装置(6)中。
7.根据权利要求1或2所述的装置，其特征在于，所述切割装置(6)设置在所述砧座(5)的第一封接区域(12)和第二封接区域(13)之间。
8.根据权利要求3所述的装置，其特征在于，所述附加切口是撕裂切口。
9.根据权利要求4所述的装置，其特征在于，所述刀(7)以5μm至50μm从所述砧座(5)的面向所述超声焊极(3)的表面(10)突出。
10.用于焊接和分割包装材料(4)的方法，包括以下步骤：
将所述包装材料(4)定位在超声波焊接装置(2)的超声焊极(3)和砧座(5)之间并且封接前面的包装(14)的脚缝(16)，其中，所述超声焊极(3)的指向所述砧座(5)的表面(11)面状地且无空槽地构成，和/或所述超声焊极(3)以钝角屋顶形地构成，
在前面的包装(14)和后面的包装(15)之间分割所述包装材料(4)，其中，不仅由所述超声焊极(3)围绕第一旋转轴线(X)而且由所述砧座(5)围绕第二旋转轴线(Y)在所述包装材料(4)的进给方向(F)上分别执行旋转，切割装置(6)的从所述砧座(5)的面向所述超声焊极(3)的表面(10)突出的刀(7)接触所述包装材料(4)并且向着所述超声焊极(3)的方向引导所述包装材料(4)，使得所述包装材料(4)被所述刀(7)切断，其中，在任何位置中在所述刀(7)和所述超声焊极(3)之间都维持一个最小距离(S)，从而在所述超声焊极(3)和所述刀(7)之间不发生接触，并且
封接后面的包装(15)的头缝(17)。
11.根据权利要求10所述的方法，其特征在于，所述切割装置(6)的切割力小于所述超声波焊接装置(2)的封接力。
12.根据权利要求10或11所述的方法，其特征在于，所述刀(7)是可调节的。
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