CN108974483B - 密封食品包装的顶部的装置和形成和密封包装的系统 - Google Patents

密封食品包装的顶部的装置和形成和密封包装的系统 Download PDF

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CN108974483B
CN108974483B CN201810536136.2A CN201810536136A CN108974483B CN 108974483 B CN108974483 B CN 108974483B CN 201810536136 A CN201810536136 A CN 201810536136A CN 108974483 B CN108974483 B CN 108974483B
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sealing
package
rubber tray
jaw
tray
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马努泽尔·凯克哈
约尔根·里斯·莫克
丹尼斯·伦德马克
拉尔斯·雷格纳
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Tetra Laval Holdings and Finance SA
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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
    • 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
    • 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
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B29C66/43122—Closing the top of gable top containers
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • 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
    • B29C66/80—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
    • B29C66/81419—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 and flat
    • 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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B65B51/144—Closing paperboard containers
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Closing Of Containers (AREA)
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Abstract

本发明涉及密封食品包装的顶部的装置和形成和密封包装的系统。公开了一种密封食品包装的顶部的装置。该装置包括成对的相对设置的第一和第二密封爪，第一和第二密封爪被配置为在包装的顶部上彼此可逆地接合，第一密封爪上的至少一个楔块被配置用于接触包装的第一顶部部分以形成第一山墙形板，第二密封爪上的键形物被配置用于接触包装的第二顶部部分以形成第二山墙形板，在键形物上的至少一个凸耳被构造成用于在密封之前减少包装的歪斜，以及位于第一或第二密封夹爪上的橡胶托盘，橡胶托盘和相对的密封爪被构造成形成并密封橡胶托盘和相对的密封爪之间的翅片，由此密封包装的顶部。还公开了包括用于形成、填充和密封容纳食品的包装的装置的系统。

Description

密封食品包装的顶部的装置和形成和密封包装的系统
技术领域
本发明涉及一种用于密封适于容纳食品的包装的装置。更具体地说，所述解决方案涉及一种用于密封具有山墙形顶部的含食品包装的顶部的装置。所述解决方案还涉及一种用于形成和填充包含该装置的食品包装的系统。
背景技术
食品包装容器是众所周知的。这些容器通常具有四个垂直侧壁(通常为矩形板)，其由山墙形顶部封闭。典型的山墙形顶部具有通过密封的顶部翅片连接的两个相同尺寸的山墙形板。一个山墙形板可以包括封闭件，例如具有安装到该山墙形板上的螺纹帽的喷嘴，以便于利用容器内的内容物。在用食品填充容器之前，容器的底部首先由包装材料坯件形成，然后形成山墙形顶板，并密封翅片。
US 6,430,899 B1公开了一种用于山墙形顶部纸盒的顶部密封和折痕装置。该装置具有成对的相对的砧座，其用于将纸盒的顶部翅片接合和压缩在一起以密封纸盒。每个砧座还具有一个或多个楔块，以用于在山墙形板顶部上成型和形成不同的折痕。
US 7,509,791 B2公开了一种用于具有密封顶部翅片的山墙形顶部包装的顶部密封器。密封器包括臂支架和枢转地安装到臂支架的成对的相对的臂。每个臂在其一端附近均具有密封爪。这些臂是枢轴的以通过弧将密封爪朝向和远离彼此移动。随着臂枢转，臂支撑件可朝着和远离包装件线性地移动，以将密封爪向下朝着包装件移动，以改变枢转密封爪的弧度。
然而，现有的山墙形顶部包装的密封机械由于(1)在将包装供给到密封机械期间发生的包装定位不规则和/或(2)包装材料规格的变化，例如套筒宽度和折痕公差的变化，因而不能提供对翅片的有效密封。这又会导致已经密封的包装凸起增加以及包装内食品过早的泄漏/损坏。
因此，需要改进用于山墙形顶部包装的密封装置，其能够校正或至少适应包装定位和包装材料规格的变化，同时有效地密封包装的顶部。
发明内容
根据第一方面，提供了一种用于密封食品包装的顶部的装置，所述装置包括：
成对的相对设置的第一和第二密封爪，所述第一和第二密封爪构造成用于在所述包装的顶部上彼此可逆地接合；
在所述第一密封爪上的至少一个楔块，所述楔块被构造成用于接触所述包装的第一顶部部分以形成第一山墙形板；
所述第二密封爪上的键形物，其被构造成用于接触所述包装的第二顶部部分以形成第二山墙形板；
所述键形物上的至少一个凸耳，其被构造成用于在密封之前减少所述包装的歪斜；以及
在第一或第二密封爪上的橡胶托盘，橡胶托盘和与密封爪相对的托盘被配置成形成并密封橡胶托盘和相对的密封爪之间的翅片，从而密封包装的顶部。
根据第二方面，提供了一种用于形成、填充和密封容纳食品的包装的系统，所述系统包括：
底部形成和密封站，其用于将包装材料坯件折叠成包装并密封包装的底部，
用于用食品填充包装的填充站，以及
根据第一方面的用于密封包装的顶部的装置。
附图说明
参照附图，通过以下例子描述本发明的一些优选的非限制性实施例，其中：
图1A根据实施方式示出了用于密封食品包装的顶部的装置，其中密封爪在密封包装之前彼此间隔开；
图1B示出了图1A的装置，其中密封爪围绕包装的顶部翅片彼此接合以密封包装；
图1C示出了密封包装后的图1A中的装置。
图2是图1A-1C的装置中的密封爪的透视图。
图3A是附接到图1A-C和图2中的密封爪上的托盘的透视图。
图3B是图3A中的托盘的侧视图。
图3C是图3A中的托盘的正视图。
图3D是图3A中的托盘的俯视图。
图4是图1A-C和图2中的密封爪的凸耳的透视图。并且
图5示出了图1A-C和图2中的密封爪上的键形物的前后透视图。
图6A是在用图1A-1C的装置密封之前具有不规则构造的包装的顶视图。
图6B是图6A中的包装在与图1A-1C的装置中的密封爪上的凸耳接触之后、在密封翅片之前的俯视图；
图6C是在用图1A-1C的装置的密封爪形成和密封翅片之后的图6B中的包装的顶视图；并且
图7示出了包含图1A-1C的装置的用于形成并填充食品包装的系统。
具体实施方式
下面参考图1-7，描述实施例的装置和系统。
图1A-1C示出了用于密封适用于食品的包装30的顶部的装置10。装置10具有成对的相对设置的位于臂16和18端部的密封爪12和14。密封爪可以被加热以便于密封。所述臂16、18在其另一端连接到驱动机构(未示出)，使得在使用中臂16、18交替地使密封爪12、14在图1A中沿弯曲箭头的方向朝向彼此，然后在图1B中将密封爪12、14沿弯曲箭头的方向彼此拉开。可被使用任何特定的驱动机构，诸如液压、气动、机电和电动驱动机构。在图2中，更详细地示出了密封爪12和14的底部。两个密封爪12、14均具有密封部分40和冷却部分42。每个密封部分40和冷却部分42在给定时间能够容纳两个包装。密封爪12在密封部分40中的密封爪12的底表面上具有三个楔块26。每个楔块26具有从楔块26和密封爪12向下延伸的突起28。每个楔块26具有从楔块26和密封爪12向下延伸的突起28。每个楔块26及其突起28通过间隙36与另一个楔块/突出物间隔开，在密封阶段，所述间隙36容纳在包装30上的诸如喷嘴(没有示出)这样的封闭件。另一个密封爪14在密封部分40的密封爪14的底表面上具有键形物22。两个凸耳24远离键形物22和密封爪14向下延伸。密封爪12的冷却部分42具有成对的凹槽38，其用于向密封的包装30供应冷却空气和/或使剩余热量能逸出装置10。当包装处于密封部分40中时，会产生热量。在使用期间，在密封爪14的侧密封表面上存在与密封爪12接合的托盘20。所述托盘20优选由橡胶制成。如图1A所示的装置10位于包装30的未密封顶部上方。为了清楚起见，省略了包装30的底部。图2中的双头箭头描绘了在使用期间密封爪12、14相对于彼此的交替运动。图2中的单头箭头描述了包装30通过装置10的行进方向，如下所述。
装置10操作如下：如图1A和2所示，具有未密封顶部的包装30被供给到装置10的密封部分40下方的位置。驱动机构激活臂16、18以使密封爪12和14在弯曲箭头的方向上朝向彼此移动。随着密封爪12、14更接近接合，突起28接触包装30以折叠并使包装30的顶部形成山墙形板32。楔块26还远离突起28在接近包装30顶部的部分处接触包装30。键形物22接触包装30的另一顶部以折叠并形成相对的山墙形板33。凸耳24仅在包装30具有不规则构造时与包装30接触，这将在下文参照图6A-6C进一步描述。否则，凸耳24邻近包装30传送到图1B中描绘的凸耳24的虚线所示的位置。如图1B最佳地示出的，托盘20和密封爪12接触并压紧包装30的最顶部部分以在托盘20和密封爪12之间形成并密封翅片34。一旦山墙形板32、33和翅片34形成并密封，臂16、18沿图1B中所示的弯曲箭头的方向移动以分离密封爪12、14并如图1C所示释放已密封的包装30。然后通过传送带或其他运输系统(未示出)，将已密封的包装30移动到冷却部分42。当已密封的包装30位于冷却部分40的下方时，驱动机构再次将密封爪12、14移回以在翅片34周围接合。这加强了在密封部分40中形成的密封。残余热量通过密封爪12的凹槽38逸出。或者，可以通过凹槽38将冷却气体或冷却空气供应到已密封的包装30上。然后，密封爪12、14分离并且运输系统将已密封和冷却的包装30移出装置10。
图3A-3D图示了可以连接到密封爪14的托盘20。托盘20具有四个孔44，其用于使用螺钉或其他合适的紧固元件将托盘20固定到密封爪14。托盘20底部的倾斜表面46靠在与包装30的翅片34相邻的山墙形板33上。倾斜表面46有助于形成翅片34并对由楔块26施加到包装30上的力提供相反的平衡力。如图3B-3D所示的托盘20的非限制性的示例性尺寸是：
a：37毫米
b：90毫米
c：50毫米
d：12毫米
e：344毫米
f：4毫米
θ：25°
孔44的直径为：5.5毫米
图4描绘了附接到密封爪14的键形物22上的示例性凸耳24。凸耳24具有倒角表面50，其用于在密封之前帮助校正不规则的包装构造。如下文参照图6A-6C所述的。
图5示出了位于密封爪14上的键形物22。键形物22由诸如金属之类的任何合适的材料一体制成。提供了孔56和58，其用于使用螺钉或类似的紧固元件将键形物22固定到密封爪14并将凸耳24固定到键形物22。键形物22的纵向长度跨越密封部分40的长度。
图6A示出了在进入装置10的密封部分40之前具有歪斜构造的包装30的俯视图。在形成底部部分，填充食品或者将包装运输到装置10期间，包装30可能变得歪斜。如果在密封包装的顶部之前未纠正歪斜的构造，则将在密封爪12、14之间形成不对称的翅片34。这会产生令人不快的外观，并可能会影响密封形成的效率。密封的包装也可能会显示凸起的增加。如图6B所示，随着密封爪12、14在密封过程中朝向彼此移动，凸耳24的倒角表面50接触包装30的歪斜的竖直边缘并且将包装30的构造校正为当从上面观看时围绕其横轴高度对称的构造(如点划线所示)。然后，密封爪12、14继续沿图6B中箭头所示的方向朝彼此移动以形成如图6C所示的翅片34并密封包装30的顶部。
图7示出了用于形成、填充和密封容纳食品的包装的系统60。如果需要，系统60可具有用于存储扁平包装材料坯件的包装盒62。在系统60的操作期间，包装材料坯件从包装盒62(或其它来源)供应到底部形成和密封站64，在该处坯件被折叠并且包装的底部被形成并密封。然后将部分形成的包装供给到杀菌站66，在杀菌站66中，用过氧化氢溶液和/或UV光对包装进行杀菌。然而，在系统60中包括杀菌站66并不是必需的。包装从杀菌站66(或底部形成和密封站64)供应到填充站68，以用食品填充包装。最后，如上面参照图1A-1C和图2所述，将容纳食品的包装运送到密封装置10，以密封包装的顶部。
使用凸耳24便于在密封之前校正歪斜的包装构造，由此造成包装凸起减少和顶部密封更有效。在其中一个密封爪上使用橡胶托盘20(而不是简单地使用带有状态标记的不锈钢爪表面)使得不管在运输未密封包装到装置10期间可能发生的包装定位的不规则性如何，在两个密封爪之间都能形成有效的密封。不管包装规格(如套筒宽度和折痕容差)如何变化，橡胶托盘20也能够有效地密封包装。
附图标记列表
下表列出了装置和系统的特征及其相应的附图标记。
Figure GDA0003212665970000061
Figure GDA0003212665970000071

Claims (15)

1.一种用于密封食品包装(30)的顶部的装置(10)，所述装置包括：
成对的相对设置的第一和第二密封爪(12、14)，其被配置用于在所述包装(30)的顶部上彼此可逆地接合，
位于所述第一密封爪(12)上的至少一个楔块(26)，所述楔块(26)被配置用于接触所述包装(30)的第一顶部部分以形成第一山墙形板(32)，
位于所述第二密封爪(14)上的键形物(22)，所述键形物被构造成用于接触所述包装(30)的第二顶部部分以形成第二山墙形板(33)，
位于所述键形物(22)上的至少一个凸耳(24)，所述凸耳配置用于在密封之前减少所述包装(30)的歪斜，以及
在第一或第二密封爪(12,14)上的橡胶托盘(20)，所述橡胶托盘(20)和与橡胶托盘(20)相对的密封爪(12,14)被构造形成并密封在橡胶托盘(20)与所述与橡胶托盘(20)相对的密封爪(12,14)之间的翅片(34)，由此密封所述包装(30)的顶部。
2.根据权利要求1所述的装置(10)，其中，所述橡胶托盘(20)位于所述第二密封爪(14)上。
3.根据权利要求1或2所述的装置(10)，其中，所述橡胶托盘(20)具有配置用于接触所述第一或第二山墙形板(32,33)的倾斜表面(46)。
4.根据权利要求1或2所述的装置(10)，其中，所述橡胶托盘(20)的厚度在2mm和6mm之间。
5.根据权利要求1或2所述的装置(10)，其中，所述橡胶托盘(20)的厚度为4mm。
6.根据权利要求1或2所述的装置(10)，其中，所述橡胶托盘(20)具有用于接收用于将所述橡胶托盘(20)固定到所述第一或第二密封爪(12,14)的紧固元件的多个孔(44)。
7.根据权利要求1或2所述的装置(10)，其包括在所述键形物(22)上的至少两个凸耳(24)。
8.根据权利要求1或2所述的装置(10)，其中，一个或者多个所述凸耳(24)具有至少一个倒角表面(50)。
9.根据权利要求1或2所述的装置(10)，其还包括至少三个楔块(26)，每个楔块(26)具有构造成用于接触所述包装(30)的第三顶部部分的突起(28)。
10.根据权利要求9所述的装置(10)，其还包括所述楔块(26)中的至少两个楔块之间的间隙(36)，所述间隙(36)被构造用于容纳在所述包装(30)上的封闭件。
11.根据权利要求1或2所述的装置(10)，其中所述第一和第二密封爪(12,14)还包括冷却部分(42)，所述冷却部分构造成用于接收已密封的包装(30)。
12.根据权利要求1或2所述的装置(10)，其还包括成对的臂(16,18)，每个臂连接到所述第一和第二密封爪(12,14)中的一个并且被配置用于可逆地将所述第一和第二密封爪(12,14)彼此接合。
13.一种用于形成、填充和密封容纳食品的包装的系统(60)，所述系统(60)包括：
用于将包装材料坯件折叠成包装并密封所述包装的底部的底部形成和密封站(64)，
填充站(68)，所述填充站(68)用于用食品填充所述包装；以及
根据前述权利要求中任一项所述用于密封食品包装的顶部的装置(10)。
14.根据权利要求13所述的系统(60)，其中，还包括用于存储所述包装材料坯件的包装盒(62)。
15.根据权利要求13或权利要求14所述的系统(60)，其还包括用于在用所述食品填充所述包装之前对所述包装进行杀菌的杀菌站(66)。
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