End heat sealing device and packaging machine

Abstract

The utility model provides an end heat sealing device and a packaging machine. The end part heat-sealing device is used for heat-sealing the end part of transparent paper which is externally packaged in a barrel, and comprises an end part pre-heat-sealing device which is configured to carry out pre-heat-sealing on the end part of the transparent paper which is externally packaged in the barrel; and the end part final heat sealing device is configured to perform final heat sealing on the end part of the transparent paper which is pre-sealed by the end part pre-heat sealing device and is externally packaged on the carton. The packaging machine comprises the end heat sealing device. According to the end heat-sealing device and the packaging machine, the heat-sealing quality of the transparent paper of the carton can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of packaging machinery, and in particular to an end heat sealing device and a packaging machine. Background Art

[0002] like Figure 1 to Figure 2 As shown, in the packaging machine of the related art, the transparent paper used to package the strip box to be packaged is transported by the transparent paper feeding device 1' and cut into single sheets of transparent paper. The single sheet of transparent paper is clamped by the reciprocating clamp device and transported to the first lifting channel 2', that is, directly above the strip box. The first lifter in the first lifting channel 2' lifts the strip box to be packaged and merges it with the single sheet of transparent paper to complete the "frame-shaped" wrapping. When the strip box to be packaged is lifted to the highest position by the first lifter, it is pushed into the wrapping folding and heat-sealing channel by the push plate to complete the folding of the rest of the single sheet of transparent paper and the heat sealing of the long side transparent paper. Then the strip box wrapped with the single sheet of transparent paper enters the second lifting channel 3', and the second lifter 8' lifts the strip box wrapped with the single sheet of transparent paper to the left supporting teeth 4' and the right supporting teeth 5'. When the strip box wrapped with a single sheet of transparent paper pauses, two end heat sealing irons 6' arranged opposite to each other at the end heat sealing device at the end heat sealing station of the transparent paper of the strip box (hereinafter referred to as the heat sealing station) heat seal the single sheet of transparent paper. After the single sheet of transparent paper is heat sealed, a finished strip box 7' wrapped with transparent paper is formed.

[0003] The size of the heat-sealing surface of the end heat-sealing iron 6' is the same as the size of the end surface of the corresponding end of the strip box, requiring the end transparent paper part of the end of the strip box and the end heat-sealing iron 6' to be accurately aligned. However, due to the vibration of the packaging machine and the matching gap between the second lifting channel 3' and the strip box, it is easy to cause the end transparent paper part of the end of the strip box and the end heat-sealing iron 6' to deviate from the alignment.

[0004] like Figure 2As shown, the end planes P' formed by the surfaces of the end side plates on the left and right sides of the second lifting channel 3' are fixed, and the left heat-sealing iron 61' and the right heat-sealing iron 62' at the two ends of the strip box are in left and right reciprocating pressing motion. After the strip box is lifted by the second lifter 8', the ends of the strip box are limited by the end planes P' of the second lifting channel 3' on the left and right sides of the second lifter 8', ready to enter the heat-sealing station. When the second lifter 8' lifts the strip box wrapped with a single sheet of transparent paper to the highest position, the strip box stops at the heat-sealing station. The heat-sealing surfaces of the left heat-sealing iron 61' and the right heat-sealing iron 62' at the two ends of the strip box are respectively a certain distance away from the left and right end planes P' of the second lifting channel 3', for example, 5 mm, and the end heat-sealing iron 6' needs to be closed to the strip box before heat sealing. Due to the large height of the strip box to be packaged, the end transparent paper part of the end of the strip box wrapped with a single piece of transparent paper is relatively long, and the transparent paper is relatively elastic. After the end transparent paper part of the end of the strip box detaches from the left and right end planes P' of the second lifting channel 3', the end transparent paper part of the end of the strip box originally restricted by the left and right end planes P' is easy to bounce open, and the folded edge is curled up, and the closing process of the end heat sealing iron 6' requires a certain amount of time, resulting in that when the left heat sealing iron 61' and the right heat sealing iron 62' of the end heat sealing iron 6' are completely closed and press the end transparent paper part, the folded edge position of the end transparent paper part is incorrect, resulting in poor heat sealing of the end transparent paper part, wrinkles and other appearance quality problems, especially the poor heat sealing effect of the four corners of the end transparent paper part.

[0005] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art. Summary of the invention

[0006] The purpose of the present application is to provide an end heat-sealing device and a packaging machine, aiming to improve the problem of poor heat-sealing effect at the four corners of the transparent paper at the end of the strip box.

[0007] The first aspect of the present application provides an end heat sealing device, which is used for heat sealing the end of the transparent paper wrapped in a box, comprising:

[0008] An end preheat sealing device, configured to preheat seal the end of the transparent paper wrapped on the outer surface of the box; and

[0009] The end final heat sealing device is configured to perform final heat sealing on the end of the transparent paper wrapped in the strip box preheat sealed by the end preheat sealing device.

[0010] In some embodiments of the end heat sealing device, the temperatures of the end pre-heat sealing device and the end final heat sealing device are controlled independently of each other.

[0011] In some embodiments of the end heat sealing device,

[0012] The end preheat sealing device comprises a pair of preheat sealing irons arranged at a relative interval, each of the preheat sealing irons comprises a preheat sealing plate, the preheat sealing plate comprises a preheat sealing cover facing the other preheat sealing iron, and the interval between the pair of preheat sealing irons is used to accommodate the strip box and the transparent paper wrapped outside it;

[0013] The end final heat sealing device includes a pair of final heat sealing irons arranged relatively at intervals, each of the final heat sealing irons includes a final heat sealing plate, and the final heat sealing plate includes a final heat sealing surface facing the other final heat sealing iron, and the interval between the pair of final heat sealing irons is used to accommodate the strip box and the transparent paper wrapped on the outside.

[0014] In some embodiments of the end heat sealing device,

[0015] The temperatures of the pair of preheat sealing irons are controlled independently of each other or the temperatures of the pair of preheat sealing irons are controlled synchronously; and / or

[0016] The temperatures of the pair of final heat-sealing irons are controlled independently of each other or the temperatures of the pair of final heat-sealing irons are controlled synchronously.

[0017] In some embodiments of the end heat sealing device,

[0018] The preheating cover is configured to be larger than or equal to the size of the end surface of the strip box; and / or

[0019] The final heat cover is configured to be larger than or equal to the size of the end surface of the strip box; and / or

[0020] The size of the final heating cover is greater than or equal to the size of the preheating cover.

[0021] In some embodiments of the end heat sealing device,

[0022] The edges of each of the preheating covers have chamfers; and / or

[0023] The edge of each of the final heat cover layers is chamfered.

[0024] In some embodiments of the end heat sealing device,

[0025] The pair of preheat sealing irons of the end preheat sealing device and the pair of final heat sealing irons of the end final heat sealing device are respectively arranged correspondingly, and each of the preheat sealing irons is mechanically linked with the corresponding final heat sealing iron.

[0026] In the end heat sealing device of some embodiments, each of the pre-heat sealing irons and the corresponding final heat sealing iron are installed on the same connecting plate.

[0027] In the end heat sealing device of some embodiments, the preheating seam surface of each preheating sealing iron is flush with the final heat sealing seam surface of the corresponding final heat sealing iron.

[0028] In the end heat sealing device of some embodiments, each of the pre-heat sealing irons is spaced apart from the corresponding final heat sealing iron.

[0029] A second aspect of the present application provides a packaging machine, comprising the end heat sealing device described in the first aspect of the present application.

[0030] Based on the end heat sealing device provided by the present application, since an end pre-heat sealing device and an end final heat sealing device are provided, the end folded portion of the transparent paper of the outer packaging of the strip box can be positioned by the end final heat sealing device, which is beneficial to prevent the end of the transparent paper from rebounding after being folded. Therefore, after the strip box enters the end final heat sealing device, the end folded portion of the transparent paper of its outer packaging is maintained in a folded position, which is beneficial to the transparent paper being flatly packaged outside the strip box after the end final heat sealing device completes the final heat sealing, thereby helping to improve the heat sealing quality of the transparent paper on the strip box.

[0031] The packaging machine provided in the present application has the advantages of the end heat sealing device provided in the present application.

[0032] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 It is a structural schematic diagram of the heat sealing principle of the transparent paper end of a packaging machine box in the related technology.

[0035] Figure 2 for Figure 1 The schematic diagram of the partial principle structure of the packaging machine is shown.

[0036] Figure 3 This is a schematic structural diagram of an end heat sealing device of a packaging machine according to an embodiment of the present application.

[0037] Figure 4 for Figure 3 The structure schematic diagram of the first side plate at the end of the lifting channel at the first preheat sealing iron on the right side of the end preheat sealing device of the end heat sealing device shown.

[0038] FIG. 5A to FIG. 5C for Figure 3 The structure schematic diagram of the first preheat sealing plate of the first preheat sealing soldering iron on the right side of the end preheat sealing device of the end heat sealing device shown.

[0039] FIG. 6A to FIG. 6E for Figure 3 The structure schematic diagram of the first preheat sealing mounting plate of the first preheat sealing soldering iron on the right side of the end preheat sealing device of the end heat sealing device is shown.

[0040] Figure 7 for Figure 3 The structure schematic diagram of the second side plate at the end of the lifting channel at the second preheat sealing iron on the left side of the end preheat sealing device of the end heat sealing device shown.

[0041] FIG. 8A to FIG. 8C for Figure 3 The structure schematic diagram of the second preheat sealing plate of the second preheat sealing iron on the left side of the end preheat sealing device of the end heat sealing device is shown.

[0042] 9A to 9E for Figure 3 The structure schematic diagram of the second preheat sealing mounting plate of the second preheat sealing soldering iron on the left side of the end preheat sealing device of the end heat sealing device is shown.

[0043] FIG. 10A to FIG. 10C for Figure 3 The structure schematic diagram of the first final heat sealing plate of the first final heat sealing iron on the right side of the end final heat sealing device of the end heat sealing device shown.

[0044] FIG. 11A to FIG. 11E for Figure 3 The schematic structural diagram of the first final heat sealing mounting plate of the first final heat sealing soldering iron on the right side of the end final heat sealing device of the end heat sealing device shown.

[0045] FIG. 12A to FIG. 12C for Figure 3 The schematic structural diagram of the second final heat sealing plate of the second final heat sealing iron on the left side of the end final heat sealing device of the end heat sealing device shown.

[0046] FIG. 13A to FIG. 13E for Figure 3 The schematic diagram of the structure of the second final heat sealing mounting plate of the second pre-heat sealing soldering iron on the left side of the end final heat sealing device of the end heat sealing device shown.

[0047] FIG. 14A to FIG. 14C for Figure 3 The schematic structural diagram of the first connecting plate on the right side of the end final heat sealing device of the end heat sealing device is shown.

[0048] FIG. 15A to FIG. 15C for Figure 3 The schematic structural diagram of the second connecting plate on the left side of the end final heat sealing device of the end heat sealing device is shown.

[0049] Fig.16A and Fig. 16B for Figure 3The schematic structural diagram of the first transmission plate on the right side of the end final heat sealing device of the end heat sealing device is shown.

[0050] Fig.17A and Fig. 17B for Figure 3 The schematic structural diagram of the second transmission plate on the left side of the end final heat sealing device of the end heat sealing device is shown.

[0051] Fig.18A and Fig.18B for Figure 3 The schematic diagram of the structure of the first screw of the end preheat sealing device of the end heat sealing device is shown.

[0052] Fig.19A and Fig.19B for Figure 3 The schematic diagram of the structure of the second screw of the end final heat sealing device of the end heat sealing device is shown. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0055] In the description of the present application, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present application.

[0056] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0057] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0058] like Figure 3 As shown, the embodiment of the present disclosure provides an end heat sealing device, which is used for heat sealing the end of the transparent paper wrapped in the outer box. The end heat sealing device includes an end pre-heat sealing device and an end final heat sealing device. The end pre-heat sealing device is configured to pre-heat seal the end of the transparent paper wrapped in the outer box. The end final heat sealing device is configured to perform final heat sealing on the end of the transparent paper wrapped in the outer box that has been pre-heat sealed by the end pre-heat sealing device.

[0059] According to the end heat sealing device of the embodiment of the present application, since an end pre-heat sealing device and an end final heat sealing device are respectively provided, the end folded portion of the transparent paper of the outer packaging of the strip box can be positioned by the end final heat sealing device, which is beneficial to prevent the end of the transparent paper from rebounding after being folded. Therefore, after the strip box enters the end final heat sealing device, the end folded portion of the transparent paper of its outer packaging is maintained in a folded position, which is beneficial to the transparent paper being flatly packaged outside the strip box after the end final heat sealing device completes the final heat sealing, thereby helping to improve the heat sealing quality of the transparent paper on the strip box.

[0060] exist Figures 3 to 19B In the illustrated embodiment, the end pre-heat sealing device 10 is located below the end final heat sealing device 20. When heat sealing the end of the transparent paper wrapped on the outer surface of the strip box, the strip box enters the end pre-heat sealing device 10 upward to perform pre-heat sealing on the end of the transparent paper on the outer surface to achieve positioning of the folded part of the transparent paper, and then the strip box enters the end final heat sealing device 20 upward to perform final heat sealing on the end of the pre-heat sealed transparent paper.

[0061] In some embodiments of the end heat sealing device, the temperatures of the end pre-heat sealing device and the end final heat sealing device are controlled independently of each other.

[0062] The temperatures of the end preheat sealing device and the end final heat sealing device are controlled independently of each other, which is conducive to respectively adjusting the preheat sealing temperature of the end preheat sealing device and the final heat sealing temperature of the end final heat sealing device, so that the end heat sealing device can adapt to more batches and types of heat-sealing papers, and set the preheat sealing temperature and the final heat sealing temperature matching the heat-sealing paper, which is conducive to improving the heat sealing quality of transparent paper.

[0063] In some embodiments of the end heat sealing device, the end preheat sealing device includes a pair of preheat sealing irons arranged at a relative interval, each preheat sealing iron includes a preheat sealing plate, the preheat sealing plate includes a preheat sealing cover facing the other preheat sealing iron, and the space between the pair of preheat sealing irons is used to accommodate the strip box and the transparent paper wrapped thereon. The end final heat sealing device includes a pair of final heat sealing irons arranged at a relative interval, each final heat sealing iron includes a final heat sealing plate, the final heat sealing plate includes a final heat sealing cover facing the other final heat sealing iron, and the space between the pair of final heat sealing irons is used to accommodate the strip box and the transparent paper wrapped thereon. In this way, the synchronous preheat sealing and final heat sealing of the transparent paper at both ends of the strip box is achieved.

[0064] In some embodiments of the end heat sealing device, the temperatures of a pair of preheat sealing irons are controlled independently of each other or the temperatures of a pair of preheat sealing irons are controlled synchronously; and / or the temperatures of a pair of final heat sealing irons are controlled independently of each other or the temperatures of a pair of final heat sealing irons are controlled synchronously.

[0065] The temperature of a pair of preheating and sealing soldering irons or a pair of final heat sealing soldering irons can be controlled independently from each other, which is conducive to improving the accuracy of temperature control. The temperature of a pair of preheating and sealing soldering irons or a pair of final heat sealing soldering irons can be controlled synchronously, which is conducive to simplifying the operation steps.

[0066] In some embodiments of the end heat sealing device, the preheating cover is configured to be larger than or equal to the size of the end face of the strip box; and / or the final heat sealing cover is configured to be larger than or equal to the size of the end face of the strip box; and / or the size of the final heat sealing cover is larger than or equal to the size of the preheating cover.

[0067] Reasonable setting of the size of the preheating cover and the final heat cover is conducive to obtaining the desired positioning or heat sealing effect. For example, in the related art, because the size of the end heat sealing iron is the same as the size of the end of the strip box, the heat sealing effect of the four corners of the strip box transparent paper is not good. If the size of the final heat cover is larger than the size of the end face of the strip box, it is conducive to making the end of the transparent paper of the outer packaging of the strip box fully contact with the final heat cover, thereby helping to avoid poor heat sealing of the four corners of the transparent paper of the strip box.

[0068] In some embodiments of the end heat sealing device, the edge of the preheating cover of the preheating sealing plate of the preheating sealing iron has a chamfer; and / or the edge of the final heat sealing cover of the final heat sealing plate of each final heat sealing iron has a chamfer.

[0069] A chamfer is set on the edge of the preheating cover of the preheating sealing plate of the preheating sealing iron, which helps prevent the end of the transparent paper outside the strip box from melting during preheat sealing, causing the transparent papers at the ends of two adjacent strip boxes to stick together; similarly, a chamfer is set on the edge of the final heat sealing cover of the final heat sealing plate of the final heat sealing iron, which helps prevent the end of the transparent paper outside the strip box from melting during final heat sealing, causing the transparent papers at the ends of two adjacent strip boxes to stick together.

[0070] In some embodiments of the end heat sealing device, a pair of preheat sealing irons of the end preheat sealing device and a pair of final heat sealing irons of the end final heat sealing device are respectively arranged correspondingly, and each preheat sealing iron is mechanically linked with the corresponding final heat sealing iron. The mechanical linkage of each preheat sealing iron and the corresponding final heat sealing iron is beneficial to reducing the operation steps when heat sealing the strip box compared to separate operations, and saving heat sealing time.

[0071] In some embodiments of the end heat sealing device, each preheat sealing iron and the corresponding final heat sealing iron are installed on the same connecting plate. The connecting plate is used to realize mechanical linkage between each preheat sealing iron and the corresponding final heat sealing iron. The mechanical linkage is simple and the linkage relationship is accurate.

[0072] In the end heat sealing device of some embodiments, the preheating cover of each preheating iron is flush with the final heat sealing cover of the corresponding final heat sealing iron. The preheating cover of each preheating iron is flush with the final heat sealing cover of the corresponding final heat sealing iron, which is conducive to synchronously controlling the working position of the preheating cover of each preheating iron and the corresponding final heat sealing iron.

[0073] In the end heat sealing device of some embodiments, each preheat sealing iron is spaced apart from the corresponding final heat sealing iron, which is conducive to reducing the thermal impact between the preheat sealing iron and the corresponding final heat sealing iron.

[0074] The embodiment of the present application also provides a packaging machine, comprising the end heat sealing device according to the embodiment of the present application. The packaging machine has the advantages of the end heat sealing device according to the embodiment of the present application.

[0075] The following combination Figures 3 to 19B An example of implementing the present invention in a ZB417B side-opening packaging machine is described below.

[0076] Figure 3 Schematic diagram of the structure of the end heat sealing device of the packaging machine of the embodiment of the present application. Figure 3 As shown, the end heat sealing device is used for heat sealing the end of the transparent paper wrapped on the outer box. The end heat sealing device includes an end pre-heat sealing device 10 and an end final heat sealing device 20. The end pre-heat sealing device 10 is configured to pre-heat seal the end of the transparent paper wrapped on the outer box. The end final heat sealing device 20 is configured to perform final heat sealing on the end of the transparent paper wrapped on the outer box pre-heat sealed by the end pre-heat sealing device.

[0077] exist Figures 3 to 19B In the illustrated embodiment, the end preheat sealing device 10 is located below the end final heat sealing device 20. When heat sealing the end of the transparent paper wrapped on the outer surface of the strip box, the strip box and its transparent paper wrapped on the outer surface enter the end preheat sealing device 10 upward to perform preheat sealing on the end of the transparent paper wrapped on the outer surface, thereby positioning the folded part of the transparent paper. Then, the strip box enters the end final heat sealing device 20 upward to perform final heat sealing on the end of the preheat sealed transparent paper.

[0078] Figures 3 to 19B In the end heat sealing device, the temperatures of the end preheat sealing device 10 and the end final heat sealing device 20 are controlled independently of each other. The temperatures of a pair of preheat sealing irons are controlled independently of each other. The temperatures of a pair of final heat sealing irons are controlled independently of each other.

[0079] exist Figures 3 to 19B In the embodiment shown, the end preheat sealing device 10 comprises a pair of preheat sealing irons arranged at a relatively interval, which are respectively located at Figure 3 The first preheat sealing iron 11 on the right side and the second preheat sealing iron 12 on the left side. The first preheat sealing iron 11 includes a first preheat sealing plate 111, and the second preheat sealing iron 12 includes a second preheat sealing plate 121. The first preheat sealing plate 111 includes a first preheat sealing cover 1112 facing the second preheat sealing iron 12, and the second preheat sealing plate 121 includes a second preheat sealing cover 1212 facing the first preheat sealing iron 11. The space between the first preheat sealing iron 11 and the second preheat sealing iron 12 is used to accommodate the strip box and the transparent paper wrapped outside (i.e., the folded transparent paper).

[0080] Similarly, in Figures 3 to 19B In the embodiment shown, the end heat sealing device 20 comprises a pair of heat sealing irons arranged at a relatively interval, which are located at Figure 3 The first final heat-sealing iron 21 on the right side and the second final heat-sealing iron 22 on the left side. The first final heat-sealing iron 21 includes a first final heat-sealing plate 211, and the second final heat-sealing iron 22 includes a second final heat-sealing plate 221. The first final heat-sealing plate 211 includes a first final heat-sealing surface 2112 facing the second final heat-sealing iron 22, and the second final heat-sealing plate 221 includes a second final heat-sealing surface 2212 facing the first final heat-sealing iron 21. The space between the first final heat-sealing iron 21 and the second final heat-sealing iron 22 is used to accommodate the strip box and its outer packaging and preheat-sealed transparent paper (i.e., the folded and preheat-sealed transparent paper).

[0081] The preheating cover of each preheating sealing iron is flush with the final heat sealing cover of the corresponding final heat sealing iron. The first preheating cover 1112 is flush with the first final heat sealing cover 2112. The second preheating cover 1212 is flush.

[0082] The first preheat sealing iron 11 is spaced apart from the first final heat sealing iron 21. The second preheat sealing iron 12 is spaced apart from the second final heat sealing iron 22, and the spacing between the left and right sides is the same. The spacing size may be 2 mm, for example.

[0083] Figures 3 to 19B In the illustrated embodiment, the first preheat cover 1112 and the second preheat cover 1212 are configured to be equal to the size of the end surface of the strip box.

[0084] The edge of the first pre-heating cover 1112 has a chamfer 1112A, and the edge of the second pre-heating cover 1212 has a chamfer 1212A.

[0085] The size of the first final heat cover 2112 and the second final heat cover 2212 is larger than the size of the first preheat cover 1112 and the second preheat cover 1212, that is, larger than the size of the end surface of the strip box. The edges of the first final heat cover 2112 and the second final heat cover 2212 are also chamfered.

[0086] like Figure 3 As shown, located Figure 3 The first preheat seal soldering iron 11 is located on the right side of Figure 3 The first final heat sealing iron 21 on the middle right side is connected to the first connecting plate 31 on the right side through a plurality of first screws 13 and second screws 23, thereby realizing the mechanical linkage between the first preheat sealing iron 11 and the first final heat sealing iron 21. Figure 3 The second preheat seal iron 12 is located on the left side Figure 3 The second final heat sealing iron 22 on the left side is connected to the first connecting plate 31 on the right side through a plurality of first screws 13 and a plurality of second screws 23 , thereby realizing mechanical linkage between the second preheat sealing iron 12 and the second final heat sealing iron 22 .

[0087] Figure 4 for Figure 3 The structure diagram of the first side plate 61 at the end of the lifting channel at the first preheat sealing iron 11 on the right side of the end preheat sealing device 10 of the end heat sealing device shown.

[0088] like Figure 4 As shown, the first side plate 61 is provided with a first groove 611 for installing the first preheating and sealing iron 111. The folded transparent paper edge of the outer packaging of the strip box is restricted by the rest of the first side plate 61 to prevent the transparent paper edge from rebounding.

[0089] FIG. 5A to FIG. 5C for Figure 3 The structure schematic diagram of the first preheat sealing plate 111 of the first preheat sealing soldering iron 11 on the right side of the end preheat sealing device 10 of the end heat sealing device shown.

[0090] like FIG. 5A to FIG. 5C As shown, the first preheat sealing plate 111 has a first preheat cover 1112 facing one side of the strip box during preheat sealing, and two first mounting grooves 1111 for mounting the first preheater are provided on the opposite side of the first preheat cover 1112. Each side edge of the first preheat cover 1112 is designed with a chamfer 1112A. The first preheat sealing soldering iron 11 performs preheat sealing on a small area of ​​the right side transparent paper at the end of the strip box to prevent the rebound of the folded edge of the right side transparent paper at the end of the strip box when the strip box is lifted into the end final heat sealing device 20, and to prevent the end of the transparent paper outside the strip box from melting during preheat sealing, causing the transparent paper at the ends of two adjacent strip boxes to stick together.

[0091] The first preheating sealing plate 111 is also provided with a plurality of mounting holes for mounting the first preheating sealing plate 111 .

[0092] FIG. 6A to FIG. 6E for Figure 3 The structure schematic diagram of the first preheat sealing mounting plate 112 of the first preheat sealing soldering iron 11 on the right side of the end preheat sealing device 10 of the end heat sealing device is shown.

[0093] like FIG. 6A to FIG. 6E As shown, two second mounting grooves 1121 for mounting the first preheating heater are provided on the first preheating sealing mounting plate 112 of the first preheating sealing iron 11 located at the right side of the end of the strip box during preheating sealing. The first preheating sealing mounting plate 112 is assembled with the first preheating sealing plate 111 by screws. After assembly, the second mounting grooves 1121 and the first mounting grooves 1111 are opposite to form a space for mounting the first preheating heater, and the space is two cylindrical holes with circular cross-sections, which are used to cooperate with the two heating rods as the first preheating heater to heat the first preheating sealing iron 11 so that the first preheating cover 1112 is heated.

[0094] The first preheat seal mounting plate 112 is also provided with a plurality of mounting holes corresponding to the mounting holes on the first preheat seal plate 111, and is used to assemble the first preheat seal plate 111 and the first preheat seal mounting plate 112. In addition, the first preheat seal mounting plate 112 is provided with a small hole whose axis is perpendicular to the preheat cover 1112 (with a chamfer, perpendicular to the plane in the middle of the first preheat cover 1112), and the small hole is used to install the first thermocouple, and the first thermocouple is used to detect the temperature of the first preheat cover 1112.

[0095] Figure 7 for Figure 3 The structure diagram of the second side plate 62 at the end of the lifting channel at the second preheat sealing iron 12 on the left side of the end preheat sealing device 10 of the end heat sealing device shown.

[0096] like Figure 7As shown, the second side plate 62 is provided with a first groove 621 for mounting the second preheating and sealing iron 12. The folded transparent paper edge of the outer packaging of the strip box is restricted by the rest of the second side plate 62 to prevent the transparent paper edge from rebounding.

[0097] FIG. 8A to FIG. 8C for Figure 3 The structure diagram of the second preheat sealing plate 121 of the second preheat sealing iron 12 on the left side of the end preheat sealing device 10 of the end heat sealing device is shown.

[0098] like FIG. 8A to FIG. 8C As shown, the second preheat sealing plate 121 has a second preheat cover 1212 facing one side of the strip box during preheat sealing, and two third mounting grooves 1211 for mounting the second preheater are provided on the opposite side of the second preheat cover 1212. Each side edge of the second preheat cover 1212 is designed with a chamfer 1212A. The second preheat sealing iron 12 performs preheat sealing on a small area of ​​the left transparent paper at the end of the strip box to prevent the folded edge of the left transparent paper at the end of the strip box from rebounding when the strip box is lifted into the end final heat sealing device 20, and to prevent the end of the transparent paper outside the strip box from melting during preheat sealing, causing the transparent paper at the ends of two adjacent strip boxes to stick together.

[0099] The second preheating sealing plate 121 is also provided with a plurality of mounting holes for mounting the second preheating sealing plate 121 .

[0100] The second preheating sealing plate 121 and the first preheating sealing plate 111 may form a left-right mirror relationship, for example.

[0101] 9A to 9E for Figure 3 The structure diagram of the second preheat sealing mounting plate 122 of the second preheat sealing soldering iron 12 on the left side of the end preheat sealing device 10 of the end heat sealing device is shown.

[0102] like 9A to 9E As shown, two fourth installation grooves 1221 for installing the second preheating heater are provided on the second preheating sealing mounting plate 122 of the second preheating sealing iron 12 located at the left end of the strip box during preheating sealing. The second preheating sealing mounting plate 122 is assembled with the second preheating sealing plate 121 by screws. After assembly, the fourth installation groove 1221 and the third installation groove 1211 are opposite to form a space for installing the second preheating heater, and the space is two cylindrical holes with circular cross-sections, which are used to cooperate with two heating rods as the second preheating heater to heat the second preheating sealing iron 12 so that the second preheating cover 1212 is heated.

[0103] The second preheat sealing mounting plate 122 is also provided with a plurality of mounting holes corresponding to the mounting holes on the second preheat sealing plate 121 , so as to be used for assembling the second preheat sealing plate 121 and the second preheat sealing mounting plate 122 .

[0104] In addition, a small hole with an axis perpendicular to the second preheating cover 1212 (chamfered and perpendicular to the plane in the middle of the second preheating cover 1212) is provided on the second preheating seal mounting plate 122, and the small hole is used to install a second thermocouple, and the second thermocouple is used to detect the temperature of the second preheating cover 1212.

[0105] The second preheat sealing mounting plate 122 and the first preheat sealing mounting plate 112 may form a left-right mirror relationship, for example.

[0106] FIG. 10A to FIG. 10C for Figure 3 The structure schematic diagram of the first final heat sealing plate 211 of the first final heat sealing iron 21 on the right side of the end final heat sealing device 20 of the end heat sealing device shown.

[0107] like FIG. 10A to FIG. 10C As shown, the first final heat sealing plate 211 has a first final heat sealing cover 2112 facing one side of the strip box during final heat sealing, and three fifth mounting grooves 2111 for mounting the first final heater are provided on the opposite side of the first final heat sealing cover 2112. The first final heat sealing cover 2112 of the first final heat sealing plate 211 of the first final heat sealing soldering iron 21 is larger than the end size of the strip box, which is conducive to fully heat-sealing the corresponding end transparent paper of the strip box during final heat sealing, and is conducive to avoiding poor heat sealing of the end transparent paper of the strip box. At the same time, the edge of the first final heat sealing cover 2112 is designed with a chamfer, which is conducive to preventing the end transparent papers of two adjacent strip boxes from sticking to each other during final heat sealing.

[0108] The first final heat sealing plate 211 is also provided with a plurality of mounting holes for mounting the first final heat sealing plate 211 .

[0109] FIG. 11A to FIG. 11E for Figure 3 The structure schematic diagram of the first final heat sealing mounting plate 212 of the first final heat sealing soldering iron 21 on the right side of the end final heat sealing device 20 of the end heat sealing device shown.

[0110] like FIG. 11A to FIG. 11E As shown, the first final heat sealing mounting plate 212 of the first final heat sealing soldering iron 21 located at the right side of the end of the strip box during final heat sealing is provided with three sixth mounting grooves 2121 for mounting the first final heater. The first final heat sealing mounting plate 212 is assembled with the first final heat sealing plate 211 by screws. After assembly, the sixth mounting groove 2121 and the fifth mounting groove 2111 are opposite to form a space for mounting the first final heater, and the space is three cylindrical holes with circular cross-sections, which are used to cooperate with the three heating rods as the first final heater to heat the first final heat sealing soldering iron 21 so that the first final heat sealing cover 2112 is heated.

[0111] The first final heat sealing mounting plate 212 is also provided with a plurality of mounting holes corresponding to the mounting holes on the first final heat sealing plate 211 , so as to be used for assembling the first final heat sealing plate 211 and the first final heat sealing mounting plate 212 .

[0112] In addition, a small hole with an axis perpendicular to the final heat seal cover 2112 (chamfered and perpendicular to the plane in the middle of the first final heat seal cover 2112) is provided on the first final heat seal mounting plate 212. The small hole is used to install the third thermocouple, and the third thermocouple is used to detect the temperature of the first final heat seal cover 2112.

[0113] FIG. 12A to FIG. 12C for Figure 3 The structure schematic diagram of the second final heat sealing plate 221 of the second final heat sealing iron 22 on the left side of the end final heat sealing device 20 of the end heat sealing device shown.

[0114] like FIG. 12A to FIG. 12C As shown, the second final heat sealing plate 121 has a second final heat sealing cover 2212 facing one side of the strip box during final heat sealing, and three seventh mounting grooves 2211 for mounting the second final heater are provided on the opposite side of the second final heat sealing cover 2212. Each side edge of the second final heat sealing cover 2212 is designed with chamfers to prevent the end of the transparent paper outside the strip box from melting during final heat sealing, causing the transparent paper at the ends of two adjacent strip boxes to stick together.

[0115] The second final heat sealing plate 221 is also provided with a plurality of mounting holes for mounting the second final heat sealing plate 221 .

[0116] The second final heat sealing plate 221 and the first final heat sealing plate 211 may form a left-right mirror relationship, for example.

[0117] FIG. 13A to FIG. 13E for Figure 3 The structure schematic diagram of the second final heat sealing mounting plate 222 of the second final heat sealing soldering iron 22 on the left side of the end final heat sealing device 20 of the end heat sealing device shown.

[0118] like 9A to 9E As shown, two eighth mounting grooves 2221 for mounting the second final heater are provided on the second final heat sealing mounting plate 222 of the second final heat sealing soldering iron 22 located at the left side of the end of the strip box during final heat sealing. The second final heat sealing mounting plate 222 is assembled with the second final heat sealing plate 221 by screws. After assembly, the eighth mounting groove 2221 and the seventh mounting groove 2211 are opposite to form a space for mounting the second final heater, and the space is three cylindrical holes with circular cross-sections, which are used to cooperate with three heating rods as the second final heater to heat the second final heat sealing soldering iron 22 so that the second final heat sealing cover 2212 is heated.

[0119] The second final heat sealing mounting plate 222 is also provided with a plurality of mounting holes corresponding to the mounting holes on the second final heat sealing plate 221 , so as to be used for assembling the second final heat sealing plate 221 and the second final heat sealing mounting plate 222 .

[0120] In addition, a small hole with an axis perpendicular to the second final heat seal cover 2212 (chamfered and perpendicular to the plane in the middle of the second final heat seal cover 2212) is provided on the second final heat seal mounting plate 222. The small hole is used to install the fourth thermocouple, and the fourth thermocouple is used to detect the temperature of the second final heat seal cover 2212.

[0121] The second final heat seal mounting plate 222 and the first final heat seal mounting plate 212 may form a left-right mirror relationship, for example.

[0122] FIG. 14A to FIG. 14C for Figure 3 The schematic structural diagram of the first connecting plate 31 on the right side of the end final heat sealing device 20 of the end heat sealing device is shown.

[0123] like FIG. 14A to FIG. 14C As shown, the lower half of the first connecting plate 31 is connected to the first preheat sealing iron 11 through the first screw 13, and the upper half of the first connecting plate 31 is connected to the first final heat sealing iron 21 and the first transmission plate 51 described later through the second screw 23, thereby realizing the mechanical linkage between the first preheat sealing iron 11 and the first final heat sealing iron 22.

[0124] FIG. 15A to FIG. 15C for Figure 3 The schematic structural diagram of the second connecting plate 32 on the left side of the end final heat sealing device 20 of the end heat sealing device is shown.

[0125] like FIG. 15A to FIG. 15C As shown, the lower half of the second connecting plate 32 is connected to the second preheat sealing iron 12 through the first screw 13, and the upper half of the second connecting plate 32 is connected to the second final heat sealing iron 22 and the second transmission plate 52 described later through the second screw 23, thereby realizing the mechanical linkage between the second preheat sealing iron 12 and the second final heat sealing iron 22.

[0126] Fig.16A and Fig. 16B for Figure 3 The schematic structural diagram of the first transmission plate 51 on the right side of the end final heat sealing device 20 of the end heat sealing device is shown.

[0127] like Fig.16A and Fig. 16B As shown, the first transmission plate 51 is connected to the first connecting plate 31 through the second screw 23, thereby being connected to the first preheat sealing iron 11 and the first final heat sealing iron 21. The power mechanism transmits the motion to the first preheat sealing iron 11 and the first final heat sealing iron 21 through the first transmission plate 51, so as to realize the reciprocating motion of the first preheat sealing iron 11 and the first final heat sealing iron 21 to press the folded transparent paper end of the strip box and its outer packaging.

[0128] Fig.17A and Fig. 17B for Figure 3The schematic structural diagram of the second transmission plate 52 on the left side of the end final heat sealing device 20 of the end heat sealing device is shown.

[0129] like Fig.17A and Fig. 17B As shown, the second transmission plate 52 is connected to the second connecting plate 32 through the second screw 23, thereby connecting to the second preheat sealing iron 12 and the second final heat sealing iron 22. The power mechanism transmits the motion to the second preheat sealing iron 12 and the second final heat sealing iron 22 through the second transmission plate 52, so as to realize the reciprocating motion of the second preheat sealing iron 12 and the second final heat sealing iron 22 to press the folded transparent paper end of the strip box and its outer packaging.

[0130] Fig.18A and Fig.18B for Figure 3 The structure schematic diagram of the first screw 13 of the end preheat sealing device of the end heat sealing device is shown.

[0131] like Fig.18A and Fig.18B As shown, both ends of the first screw rod 13 are threaded, one end is directly locked with the thread of the preheating and sealing iron mounting plate to be connected; the other end is connected to the connecting plate to be connected and locked by a nut.

[0132] Fig.19A and Fig.19B for Figure 3 The schematic diagram of the structure of the second screw 23 of the end final heat sealing device of the end heat sealing device is shown.

[0133] like Fig.19A and Fig.19B As shown, both ends of the second screw rod 23 are threaded, one end is directly locked with the thread of the final heat sealing soldering iron mounting plate to be connected; the other end is connected to the connecting plate and the transmission plate to be connected and locked by a nut.

[0134] In the heat-sealing device for transparent paper ends of the embodiment of the present application, the end preheat-sealing iron 10 and the end final heat-sealing iron 20 are independently temperature-controlled. With regard to the packaging machine in the related art, such as the heat-sealing device for transparent paper ends of the strip box of the ZB417B side-opening packaging machine, due to the phenomenon that the transparent paper at the end of the strip box rebounds at the folding station, it is easy to cause poor heat sealing of the transparent paper at the end of the strip box, resulting in product appearance quality defects. By improving the design of the heat-sealing device for transparent paper ends of the original strip box, an end preheat-sealing device is added to achieve a positioning function to prevent the rebound of the folding edge of the transparent paper. When the strip box and the folded transparent paper outside it enter the end final heat-sealing device, the transparent paper at the end of the strip box has been preheat-sealed in the previous process, and the positioning of the end transparent paper is achieved, which is beneficial to prevent the rebound of the transparent paper after folding, thereby solving the problem of poor heat sealing of the transparent paper at the end of the strip box.

[0135] At the same time, the end final heat sealing soldering iron is redesigned and its area is increased so that the transparent paper at the end of the strip box can fully contact with the end final heat sealing soldering iron during final heat sealing, which helps to avoid poor heat sealing at the four corners of the transparent paper of the strip box.

[0136] The working principle of the end heat sealing device of the embodiment of the present application is described as follows:

[0137] After the second lifter lifts the strip box, the transparent paper at the end of the strip box packed with folded transparent paper is prevented from rebounding by two opposite side plates. When the strip box is lifted between the preheating irons on the left and right sides of the end preheating sealing device, the end preheating irons on the left and right sides start their closing stroke and heat-seal a small area of ​​the transparent paper at the end of the strip box, which is beneficial to prevent the folded transparent paper from rebounding during the final heat sealing and causing poor heat sealing. The left and right preheating irons are respectively equipped with two heating rods and a thermocouple to achieve separate control of the temperature of the preheating irons.

[0138] When the strip box with the preheat-sealed transparent paper ends is lifted between the final heat-sealing irons on the left and right sides of the end final heat-sealing device, the final heat-sealing irons on the left and right sides perform large-area and overall heat-sealing on the transparent paper at both ends of the strip box. At this point, all heat-sealing processes for the transparent paper at the ends of the strip box are completed. The left and right final heat-sealing irons have three heating rods and a thermocouple respectively, which realizes the separate control of the temperature of the final heat-sealing iron. Then, when the strip box with heat-sealed transparent paper continues to be lifted to the highest position, it is pushed out by the cigarette pusher.

[0139] The power transmission path of the end heat sealing device is as follows: the power shaft transmits power to the transmission plate through the key, and the transmission plate divides the movement into two paths, one is transmitted to the final heat sealing iron connected to the transmission plate, and the other is transmitted to the connected preheat sealing iron through the connecting plate connected to the transmission plate. The preheat sealing iron and the final heat sealing iron are synchronously linked.

[0140] Since the occurrence of quality failures such as poor heat sealing of transparent paper can be prevented better, unnecessary manpower in the operation process can be reduced and the consumption of transparent paper can be saved.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or some technical features can be replaced by equivalents, which should all be included in the scope of the technical solution requested for protection in this application.

Claims

1. An end heat sealing device, used for heat sealing the end of the transparent paper wrapped in a box, characterized in that: include: An end preheat sealing device is configured to preheat seal the end of the transparent paper wrapped on the outer surface of the strip box; and The end final heat sealing device is configured to perform final heat sealing on the end of the transparent paper wrapped in the strip box preheat sealed by the end preheat sealing device.

2. The end heat sealing device according to claim 1, characterized in that: The temperatures of the end preheat sealing device and the end final heat sealing device are controlled independently of each other.

3. The end heat sealing device according to claim 1, characterized in that: The end preheat sealing device comprises a pair of preheat sealing irons arranged at a relative interval, each of the preheat sealing irons comprises a preheat sealing plate, the preheat sealing plate comprises a preheat sealing cover facing the other preheat sealing iron, and the interval between the pair of preheat sealing irons is used to accommodate the strip box and the transparent paper wrapped outside it; The end final heat sealing device includes a pair of final heat sealing irons arranged relatively at intervals, each of the final heat sealing irons includes a final heat sealing plate, and the final heat sealing plate includes a final heat sealing surface facing the other final heat sealing iron, and the interval between the pair of final heat sealing irons is used to accommodate the strip box and the transparent paper wrapped on the outside.

4. The end heat sealing device according to claim 3, characterized in that: The temperatures of the pair of preheat sealing irons are controlled independently of each other or the temperatures of the pair of preheat sealing irons are controlled synchronously; and / or The temperatures of the pair of final heat-sealing irons are controlled independently of each other or the temperatures of the pair of final heat-sealing irons are controlled synchronously.

5. The end heat sealing device according to claim 3, characterized in that: The preheating cover is configured to be larger than or equal to the size of the end surface of the strip box; and / or The final heat cover is configured to be larger than or equal to the size of the end surface of the strip box; and / or The size of the final heating cover is greater than or equal to the size of the preheating cover.

6. The end heat sealing device according to claim 5, characterized in that: The edges of each of the preheating covers have chamfers; and / or The edge of each of the final heat cover layers is chamfered.

7. The end heat sealing device according to any one of claims 3 to 6, characterized in that: The pair of preheat sealing irons of the end preheat sealing device and the pair of final heat sealing irons of the end final heat sealing device are respectively arranged correspondingly, and each of the preheat sealing irons is mechanically linked with the corresponding final heat sealing iron.

8. The end heat sealing device according to claim 7, characterized in that: Each of the preheat sealing soldering irons and the corresponding final heat sealing soldering iron are installed on the same connecting plate.

9. The end heat sealing device according to claim 7, characterized in that: The preheating cover of each preheating sealing iron is flush with the final heat sealing cover of the corresponding final heat sealing iron.

10. The end heat sealing device according to claim 7, characterized in that: Each of the preheat sealing soldering irons is spaced apart from the corresponding final heat sealing soldering iron.

11. A packaging machine, characterized in that: Comprising the end heat sealing device according to any one of claims 1 to 10.

Images