Heat sealing apparatus and welding tip machine

Abstract

This utility model discloses a heat-sealing device, including a frame, at least two sets of heat-sealing mechanisms, at least two sets of first transmission mechanisms, and a drive mechanism. Each heat-sealing mechanism includes a first movable seat, a second movable seat, and at least one set of heat-sealing components. Each heat-sealing component includes a first heat-sealing mold and a second heat-sealing mold arranged opposite each other. The first heat-sealing mold is disposed on the first movable seat, and the second heat-sealing mold is disposed on the second movable seat. All first transmission mechanisms correspond one-to-one with all heat-sealing mechanisms, and the drive mechanism is connected to all first transmission mechanisms, enabling the first and second movable seats in all heat-sealing mechanisms to move relative to each other, moving closer or further apart. Therefore, only one drive mechanism is needed to achieve heat-sealing of multiple packaging bags, resulting in a simple structure and reduced production costs. Furthermore, this utility model also discloses a welding nozzle machine equipped with the above-mentioned heat-sealing device.

Description

Technical Field

[0001] This utility model relates to the field of heat sealing technology for packaging bags, and in particular to a heat sealing device and a welding nozzle machine. Background Technology

[0002] Packaging bags with spouts are commonly used for filling products such as liquids or jellies. Currently, in the production process of packaging bags, a spout welding machine is generally used to convey, position, and heat-seal the packaging bag and spout. The spout welding machine is equipped with a heat-sealing device for heat-sealing the packaging bag and spout. The heat-sealing device includes a heat-sealing assembly formed by two heat-sealing molds arranged opposite each other. When the two heat-sealing molds move closer to each other, they can press the corresponding sealing positions of the packaging bag and spout to perform heat-sealing. When the two heat-sealing molds move away from each other, they can release the heat-sealed packaging bag.

[0003] However, in order to achieve relative movement between the two heat-sealing molds, the two heat-sealing molds are usually driven by two separate drivers. In addition, when multiple packaging bags need to be heat-sealed at the same time, multiple heat-sealing components are usually required. In this case, the entire heat-sealing device needs to be driven by multiple drivers, which not only increases the production cost, but also makes the structure and layout of the heat-sealing device more complex and cumbersome. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a heat sealing device with a simple structure that helps reduce production costs.

[0005] This utility model also proposes a welding nozzle machine having the above-mentioned heat sealing device.

[0006] A heat-sealing device according to a first aspect of the present invention includes: a frame; at least two sets of heat-sealing mechanisms, all of which are movably mounted on the frame in a transverse direction, each set of heat-sealing mechanisms including a first movable seat, a second movable seat, and at least one set of heat-sealing components, wherein in each set of heat-sealing mechanisms, the first movable seat and the second movable seat are movably mounted on the frame and arranged opposite to each other in a longitudinal direction, and the heat-sealing components include a first heat-sealing mold and a second heat-sealing mold arranged opposite to each other, the first heat-sealing mold being disposed on the first movable seat and the second heat-sealing mold being disposed on the second movable seat; at least two sets of first transmission mechanisms, all of which are spaced apart in a transverse direction and correspond one-to-one with all of the heat-sealing mechanisms, the first transmission mechanisms being connected to the first movable seat and the second movable seat of the corresponding heat-sealing mechanism; and a driving mechanism disposed on the frame and drivingly connected to all of the first transmission mechanisms, the driving mechanism being capable of driving the first movable seat and the second movable seat in all of the heat-sealing mechanisms to move relative to each other or away through each of the first transmission mechanisms.

[0007] The heat sealing device according to the embodiments of the present invention has at least the following beneficial effects:

[0008] By employing the heat sealing device of this utility model embodiment, the frame is provided with at least two sets of heat sealing mechanisms. Each set of heat sealing mechanisms includes a first movable seat and a second movable seat. The drive mechanism can drive the first movable seat and the second movable seat in all heat sealing mechanisms to move relative to each other or away through the first transmission mechanism. Since each first movable seat is provided with multiple first heat sealing molds and each second movable seat is provided with multiple second heat sealing molds, the drive mechanism can drive all the first heat sealing molds on the first movable seat and all the second heat sealing molds on the second movable seat to move relative to each other synchronously or away through the first transmission mechanism. This enables the heat sealing operation of multiple packaging bags, and only one drive mechanism is required. It is not necessary to configure a driver for each first heat sealing mold and each second heat sealing mold for driving work, which greatly reduces the production cost of the heat sealing device and also greatly simplifies the structure of the heat sealing device, making the structure and layout of the heat sealing device simpler.

[0009] According to some embodiments of this utility model, each group of first transmission mechanisms includes a rotating member, a first connecting member, and a second connecting member. The rotating member is rotatably mounted on the frame and is connected to the driving mechanism. One end of the first connecting member is connected to the rotating member, and the other end is connected to the corresponding first movable seat. One end of the second connecting member is connected to the rotating member, and the other end is connected to the corresponding second movable seat. The driving mechanism can drive the rotating member to rotate, and through the first connecting member and the second connecting member, drive the first movable seat and the second movable seat to move relative to each other closer or further away.

[0010] According to some embodiments of the present invention, the rotating member is provided with a first connecting part and a second connecting part, both of which are eccentrically arranged with respect to the rotation axis of the rotating member; one end of the first connecting part is rotatably connected to the first connecting part, and the other end is rotatably connected to the corresponding first movable seat; one end of the second connecting part is rotatably connected to the second connecting part, and the other end is rotatably connected to the corresponding second movable seat.

[0011] According to some embodiments of the present invention, the frame is further provided with a second transmission mechanism that is connected to the drive mechanism. The first transmission mechanism further includes a swing arm, one end of which is connected to the rotating member and arranged coaxially with the rotation axis of the rotating member, and the other end is connected to the second transmission mechanism. The drive mechanism can drive each of the swing arms to rotate around the rotation axis of the corresponding rotating member through the second transmission mechanism, and drive the rotating member to rotate.

[0012] According to some embodiments of the present invention, the second transmission mechanism includes a first connecting rod and a connecting rod assembly. The connecting rod assembly includes a second connecting rod corresponding to each of the rocker arms. The first connecting rod is connected to the output shaft of the drive mechanism. One end of the second connecting rod is rotatably connected to the corresponding rocker arm and is eccentrically arranged with respect to the rotation axis of the rotating component. The other end of the second connecting rod is drively connected to the first connecting rod and is eccentrically arranged with respect to the output shaft. The drive mechanism can drive the first connecting rod to rotate and, through the connecting rod assembly, drive all the rocker arms to rotate around the rotation axis of the corresponding rotating component.

[0013] According to some embodiments of the present invention, in the linkage assembly, one of the second linkages is a main drive rod, and the other second linkages are auxiliary drive rods. The end of the main drive rod away from the corresponding rotating member is rotatably connected to the end of the first linkage away from the output shaft. The end of the auxiliary drive rod away from the corresponding rotating member is rotatably connected to the adjacent swing arm near the side of the main drive rod.

[0014] According to some embodiments of the present invention, in the linkage assembly, all second linkages have one end rotatably connected to the corresponding rocker arm and eccentrically arranged with respect to the rotation axis of the rotating member, and the other end rotatably connected to the end of the first linkage opposite to the output shaft.

[0015] According to some embodiments of the present invention, all first movable seats are integrally formed structures, and all second movable seats are integrally formed structures.

[0016] According to some embodiments of the present invention, in each group of heat sealing mechanisms, the number of heat sealing components is at least two groups, all the first heat sealing molds are sequentially arranged on the first movable seat in the transverse direction, and all the second heat sealing molds are sequentially arranged on the second movable seat in the transverse direction and arranged opposite to the corresponding first heat sealing molds.

[0017] According to a second aspect embodiment of the present invention, the welding nozzle machine is provided with the heat sealing device described in any of the above embodiments.

[0018] The welding nozzle machine according to the embodiments of the present utility model has at least the following beneficial effects:

[0019] By employing the heat-sealing device of any of the above embodiments, the heat-sealing device only needs one drive mechanism to realize the relative movement of the first heat-sealing mold and the second heat-sealing mold in multiple sets of heat-sealing components, thereby realizing the heat-sealing operation of multiple packaging bags. It eliminates the need for a separate driver for each first heat-sealing mold and each second heat-sealing mold, greatly reducing the production cost of the nozzle welding machine and significantly simplifying its structure, making the structure and layout of the heat-sealing device simpler. This also facilitates the installation and layout of the various devices in the nozzle welding machine.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a schematic diagram of the heat sealing device according to an embodiment of the present invention;

[0023] Figure 2 This is a top view of the heat sealing device according to an embodiment of the present invention;

[0024] Figure 3 This is a side view of the heat sealing device according to an embodiment of the present utility model;

[0025] Figure 4 This is a partial schematic diagram of the heat sealing device according to an embodiment of the present utility model;

[0026] Figure 5 This is another partial schematic diagram of the heat sealing device according to an embodiment of the present utility model;

[0027] Figure 6 for Figure 5 A cross-sectional schematic diagram of the heat sealing device.

[0028] Figure label:

[0029] Frame 100, drive mechanism 110, mounting base 120, slide rail 121;

[0030] Heat sealing mechanism 200, first movable seat 210, second movable seat 220, heat sealing assembly 230, first heat sealing mold 231, second heat sealing mold 232;

[0031] The components include a first transmission mechanism 300, a rotating component 310, a first connecting part 311, a second connecting part 312, a rotating shaft 313, a first connecting part 320, a second connecting part 330, and a rocker arm 340.

[0032] The second transmission mechanism 400, the first connecting rod 410, the second connecting rod 420, the main transmission rod 421, and the auxiliary transmission rod 422. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Reference Figures 1 to 6 This utility model provides a heat sealing device, including a frame 100, two sets of heat sealing mechanisms 200, two sets of first transmission mechanisms 300, and a drive mechanism 110. All heat sealing mechanisms 200 are movably mounted on the frame 100 in the transverse direction. Each set of heat sealing mechanisms 200 includes a first movable seat 210, a second movable seat 220, and five sets of heat sealing components 230. In each set of heat sealing mechanisms 200, the first movable seat 210 and the second movable seat 220 are movably mounted on the frame 100 and arranged opposite to each other in the longitudinal direction. The heat sealing components 230 include a first heat sealing mold 231 and a second heat sealing mold 232 arranged opposite to each other. A heat-sealing mold 231 is disposed on a first movable seat 210, and a second heat-sealing mold 232 is disposed on a second movable seat 220. All first transmission mechanisms 300 are arranged at intervals in the lateral direction and correspond one-to-one with all heat-sealing mechanisms 200. The first transmission mechanisms 300 are connected to the first movable seat 210 and the second movable seat 220 of the corresponding heat-sealing mechanism 200. A drive mechanism 110 is disposed on the frame 100 and is connected to all first transmission mechanisms 300. The drive mechanism 110 can drive the first movable seat 210 and the second movable seat 220 of all heat-sealing mechanisms 200 to move closer to or further away from each other through each first transmission mechanism 300.

[0039] In the heat sealing device of this embodiment, the frame 100 is provided with two sets of heat sealing mechanisms 200. Each set of heat sealing mechanisms 200 includes a first movable seat 210 and a second movable seat 220. The drive mechanism 110 can drive the first movable seats 210 and the second movable seats 220 in all heat sealing mechanisms 200 to move closer or further apart through the first transmission mechanism 300. Since each first movable seat 210 is provided with multiple first heat sealing molds 231 and each second movable seat 220 is provided with multiple second heat sealing molds 232, the drive mechanism 110... The first transmission mechanism 300 can drive all the first heat-sealing molds 231 on the first moving seat 210 and all the second heat-sealing molds 232 on the second moving seat 220 to move synchronously closer or further away, thereby enabling heat-sealing operations on multiple packaging bags. Only one drive mechanism 110 is needed, eliminating the need to configure a driver for each first heat-sealing mold 231 and each second heat-sealing mold 232, which greatly reduces the production cost of the heat-sealing device and simplifies its structure, making the structure and layout of the heat-sealing device simpler.

[0040] It is understandable that the aforementioned heat-sealing mechanism 200 consists of two sets, which is only for... Figures 1 to 6 As an example, the number of heat-sealing mechanisms 200 can be two, three, four, or more, and this utility model does not specifically limit this. Similarly, each heat-sealing mechanism 200 mentioned above includes five heat-sealing components 230, which is only for... Figures 1 to 6 As an example, the number of heat sealing components 230 in each heat sealing mechanism 200 can be five, one, two, three, four, six or more, and this utility model does not specifically limit this.

[0041] Understandably, referring to Figures 1 to 6 In order to realize the relative movement between the first movable seat 210 and the second movable seat 220, the frame 100 is provided with a mounting seat 120 corresponding to each heat sealing mechanism 200. The mounting seat 120 is arranged in the longitudinal direction and is provided with a slide rail 121 corresponding to the first movable seat 210 and the second movable seat 220. The first movable seat 210 and the second movable seat 220 are movably mounted on the corresponding slide rail 121 and can move along the corresponding slide rail 121 in the longitudinal direction.

[0042] Reference Figures 1 to 6In some embodiments, each first transmission mechanism 300 includes a rotating member 310, a first connecting member 320, and a second connecting member 330. The rotating member 310 is rotatably mounted on the frame 100 and is connected to the drive mechanism 110. One end of the first connecting member 320 is connected to the rotating member 310, and the other end is connected to the corresponding first movable seat 210. One end of the second connecting member 330 is connected to the rotating member 310, and the other end is connected to the corresponding second movable seat 220. The drive mechanism 110 can drive the rotating member 310 to rotate, and through the first connecting member 320 and the second connecting member 330, drive the first movable seat 210 and the second movable seat 220 to move relative to each other or away from each other. Therefore, when the drive mechanism 110 drives the rotating parts 310 in each group of first transmission mechanisms 300 to rotate, each rotating part 310 can drive the first moving seat 210 and the second moving seat 220 in the corresponding heat sealing mechanism 200 to move closer or further away through the corresponding first connecting part 320 and the second connecting part 330. This allows the drive mechanism 110 to drive the first moving seat 210 and the second moving seat 220 in all heat sealing mechanisms 200 to move closer or further away through the first transmission mechanism 300. In turn, it can drive all the first heat sealing molds 231 on the first moving seat 210 and all the second heat sealing molds 232 on the second moving seat 220 to move closer or further away synchronously. Thus, only one drive mechanism 110 is needed to realize the heat sealing operation of multiple packaging bags. It is not necessary to configure a driver for each first heat sealing mold 231 and each second heat sealing mold 232 for driving work, which greatly reduces the production cost of the heat sealing device and also greatly simplifies the structure of the heat sealing device, making the structure and layout of the heat sealing device simpler.

[0043] Reference Figures 1 to 6 In some embodiments, the rotating member 310 is provided with a first connecting portion 311 and a second connecting portion 312, both of which are eccentrically arranged with respect to the rotation axis of the rotating member 310; one end of the first connecting member 320 is rotatably connected to the first connecting portion 311, and the other end is rotatably connected to the corresponding first movable seat 210; one end of the second connecting member 330 is rotatably connected to the second connecting portion 312, and the other end is rotatably connected to the corresponding second movable seat 220. Therefore, when the drive mechanism 110 drives the rotating member 310 to rotate, the rotating member 310 can drive the first connecting part 311 and the second connecting part 312 to revolve around the rotation axis of the rotating member 310. When the first connecting part 311 rotates, it can drive the first moving seat 210 to move in the longitudinal direction through the first connecting part 320. When the second connecting part 312 rotates, it can drive the second moving seat 220 to move in the longitudinal direction through the second connecting part 330. Thus, the relative proximity or relative distance between the first moving seat 210 and the second moving seat 220 can be realized. The structure is simple and easy to implement.

[0044] Understandably, referring to Figures 1 to 6 In some embodiments, the first connecting portion 311 and the second connecting portion 312 are arranged symmetrically along the rotation axis of the rotating member 310, thereby improving the transmission reliability of the first transmission mechanism 300, enabling the first moving seat 210 and the second moving seat 220 to move synchronously relative to each other, making the heat sealing operation more stable and reliable.

[0045] Reference Figures 1 to 6 In some embodiments, the frame 100 is further provided with a second transmission mechanism 400 that is connected to the drive mechanism 110. The first transmission mechanism 300 also includes a swing arm 340, one end of which is connected to the rotating member 310 and arranged coaxially with the rotation axis of the rotating member 310, and the other end is connected to the second transmission mechanism 400. Thus, the arrangement of the swing arm 340 and the second transmission mechanism 400 facilitates the transmission connection between the drive mechanism 110 and the rotating member 310. The drive mechanism 110 can drive each swing arm 340 to swing around the rotation axis of the corresponding rotating member 310 through the second transmission mechanism 400, and drive the rotating member 310 to rotate. When the rotating member 310 rotates, it can drive the first moving seat 210 to move in the longitudinal direction through the first connecting member 320, and drive the second moving seat 220 to move in the longitudinal direction through the second connecting member 330. This enables the first moving seat 210 and the second moving seat 220 to move relatively closer or relatively farther apart. The structure is simple and easy to implement.

[0046] Understandably, referring to Figure 6 In some embodiments, the rotating member 310 has a rotating shaft 313 and is rotatably mounted on the frame 100 via the rotating shaft 313, and the swing arm 340 is fixedly mounted on the rotating shaft 313. Thus, when the drive mechanism 110 drives each swing arm 340 to rotate via the second transmission mechanism 400, the swing arm 340 can drive the entire rotating member 310 to rotate via the rotating shaft 313.

[0047] Reference Figures 1 to 6 In some embodiments, the second transmission mechanism 400 includes a first connecting rod 410 and a connecting rod assembly. The connecting rod assembly includes a second connecting rod 420 corresponding to each of the rocker arms 340. The first connecting rod 410 is connected to the output shaft of the drive mechanism 110. One end of the second connecting rod 420 is rotatably connected to the corresponding rocker arm 340 and is eccentrically arranged with respect to the rotation axis of the rotating member 310. The other end of the second connecting rod 420 is drively connected to the first connecting rod 410 and is eccentrically arranged with respect to the output shaft. The drive mechanism 110 can drive the first connecting rod 410 to rotate and drive all the rocker arms 340 to rotate around the rotation axis of the corresponding rotating member 310 through the connecting rod assembly.

[0048] In the above structure, since the linkage assembly includes a second linkage 420 corresponding to each of the rocker arm 340, one end of the second linkage 420 is rotatably connected to the corresponding rocker arm 340, and the other end is drively connected to the first linkage 410, when the drive mechanism 110 drives the first linkage 410 to rotate, the first linkage 410 can drive each rocker arm 340 to rotate around the rotation axis of the corresponding rotating member 310 through each second linkage 420, and drive each rotating member 310 to rotate. When the rotating member 310 rotates, the first moving seat 210 and the second moving seat 220 can be brought closer or farther apart through the first connecting member 320 and the second connecting member 330. The structure is simple and easy to implement.

[0049] It is understood that the drive mechanism 110 can drive the first link 410 to rotate. Specifically, the drive mechanism 110 can be a motor, or it can be a rotary cylinder or other rotary drive mechanism 110. This utility model does not make any specific limitation in this regard.

[0050] Reference Figures 4 to 6 In some embodiments, in the linkage assembly, one of the second linkages 420 is the main drive linkage 421, and the other second linkages 420 are auxiliary drive linkages 422. The end of the main drive linkage 421 away from the corresponding rotating member 310 is rotatably connected to the end of the first linkage 410 away from the output shaft. The end of the auxiliary drive linkage 422 away from the corresponding rotating member 310 is rotatably connected to the adjacent rocker arm 340 near the side of the main drive linkage 421, so that each pair of adjacent rocker arms 340 are connected by a drive linkage 422. Therefore, when the drive mechanism 110 drives the first connecting rod 410 to rotate around the output shaft and drives the main drive rod 421 to move, the main drive rod 421 can directly drive one of the rocker arms 340 to rotate, thereby driving the first moving seat 210 and the second moving seat 220 of one set of heat sealing mechanisms 200 to move relative to each other. The rocker arm 340 directly connected to the main drive rod 421 can drive the adjacent rocker arm 340 on the side away from the first connecting rod 410 to rotate through the auxiliary drive rod 422 connected to it. Similarly, the other rocker arms 340 are all connected to the main drive rod 421 through the auxiliary drive rod 422 and the adjacent rocker arms 340, so that the main drive rod 421 can drive the rocker arm 340 to rotate through each of the auxiliary drive rods 422 and the adjacent rocker arms 340. The swing arm 340 and each of the auxiliary transmission rods 422 drive the other swing arms 340 to rotate, thereby driving the first moving seat 210 and the second moving seat 220 of the other heat sealing mechanisms 200 to move relative to each other. This enables the relative movement or separation between the first moving seat 210 and the second moving seat 220 in all heat sealing mechanisms 200, so that only one drive mechanism 110 is needed to perform heat sealing operations on multiple packaging bags. It is not necessary to configure a driver for each first heat sealing mold 231 and each second heat sealing mold 232 for driving operation, which greatly reduces the production cost of the heat sealing device and also greatly simplifies the structure of the heat sealing device, making the structure and layout of the heat sealing device simpler.

[0051] Reference Figure 4 and Figure 6 In some embodiments, all heat sealing mechanisms 200 are arranged sequentially in the transverse direction. The drive mechanism 110 is located at one end of the frame 100 in the transverse direction. One end of the main drive rod 421 is connected to the first connecting rod 410, and the other end is connected to the swing arm 340 of the heat sealing mechanism 200 near the drive mechanism 110 end of the frame 100. The auxiliary drive rod 422 is connected at one end to the corresponding swing arm 340, and at the other end to an adjacent swing arm 340 near the main drive rod 421. This ensures that every two adjacent swing arms 340 are connected via a drive rod 422. Thus, in When the drive mechanism 110 drives the first connecting rod 410 to rotate and drives the main transmission rod 421 to move, the main transmission rod 421 can not only drive the swing rod 340 directly connected to it to rotate around the rotation axis of the corresponding rotation shaft, but also drive other swing rods 340 to rotate around the rotation axis of the corresponding rotation shaft in the transverse direction through each swing rod 340 and each auxiliary transmission rod 422, thereby realizing the relative movement or separation between the first moving seat 210 and the second moving seat 220 in all heat sealing mechanisms 200. The structure is simple and convenient for the installation and transmission between each connecting rod.

[0052] It is understandable that, in addition to using the aforementioned main drive rod 421 and auxiliary drive rod 422 to achieve the rotation of all the rocker arms 340, other structures can also be used. For example, in some embodiments, in the linkage assembly, all the second linkages 420 have one end rotatably connected to the corresponding rocker arm 340 and eccentrically arranged with respect to the rotation axis of the rotating member 310, and the other end rotatably connected to the end of the first linkage 410 away from the output shaft. Thus, when the drive mechanism 110 drives the first linkage 410 to rotate, the first linkage 410 can directly drive all the second linkages 420 to move, thereby causing all the rocker arms 340 to rotate around the rotation axis of the corresponding rotating member 310, thereby enabling relative movement or separation between the first moving seat 210 and the second moving seat 220 in all the heat sealing mechanisms 200. The structure is simple and facilitates the installation and transmission between the linkages.

[0053] Reference Figures 1 to 6In some embodiments, all first movable seats 210 and all second movable seats 220 are integrally formed. Therefore, when the drive mechanism 110 drives the first movable seats 210 and second movable seats 220 in all heat-sealing mechanisms 200 to move closer or further apart via the first transmission mechanism 300, all first movable seats 210 and all second movable seats 220 can move synchronously. This allows all first heat-sealing molds 231 and all second heat-sealing molds 232 in the heat-sealing device to move synchronously, thereby improving the ability of each group of heat-sealing components 230 to simultaneously heat-seal or release the packaging bags. This significantly improves the synchronicity of the heat-sealing operations of each group of heat-sealing components 230, enabling the heat-sealing device to simultaneously heat-seal multiple packaging bags. Furthermore, having all first movable seats 210 and all second movable seats 220 as integrally formed also facilitates the production and processing of all first movable seats 210 and all second movable seats 220, which helps improve production efficiency and reduce production costs.

[0054] Reference Figures 1 to 6 In some embodiments, in each heat sealing mechanism 200, there are at least two sets of heat sealing components 230. All first heat sealing molds 231 are arranged sequentially on the first moving seat 210 in the transverse direction, and all second heat sealing molds 232 are arranged sequentially on the second moving seat 220 in the transverse direction and are arranged opposite to the corresponding first heat sealing molds 231. Thus, when the driving mechanism 110 drives the first moving seat 210 and the second moving seat 220 in each heat sealing mechanism 200 to move relative to each other, more sets of heat sealing components 230 can be driven to perform heat sealing operations, which greatly increases the number of packaging bags that the heat sealing device can heat seal at the same time, and further improves the heat sealing efficiency of the heat sealing device.

[0055] An embodiment of this utility model also proposes a nozzle welding machine, which is equipped with the heat sealing device of any of the above embodiments.

[0056] By employing the heat-sealing device of any of the above embodiments, the heat-sealing device can realize the relative movement of the first heat-sealing mold 231 and the second heat-sealing mold 232 in multiple sets of heat-sealing components 230 through only one drive mechanism 110, thereby realizing the heat-sealing operation of multiple packaging bags. It eliminates the need to configure a driver for each first heat-sealing mold 231 and each second heat-sealing mold 232, greatly reducing the production cost of the nozzle welding machine and significantly simplifying its structure, making the structure and layout of the heat-sealing device simpler. This also facilitates the installation and layout of various devices in the nozzle welding machine.

[0057] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A heat sealing device, characterized in that, include: Rack (100); At least two sets of heat sealing mechanisms (200) are provided. All heat sealing mechanisms (200) are movably mounted on the frame (100) in the lateral direction. Each set of heat sealing mechanisms (200) includes a first movable seat (210), a second movable seat (220), and at least one set of heat sealing components (230). In each set of heat sealing mechanisms (200), the first movable seat (210) and the second movable seat (220) are movably mounted on the frame (100) and arranged opposite to each other in the longitudinal direction. The heat sealing component (230) includes a first heat sealing mold (231) and a second heat sealing mold (232) arranged opposite to each other. The first heat sealing mold (231) is disposed on the first movable seat (210), and the second heat sealing mold (232) is disposed on the second movable seat (220). At least two sets of first transmission mechanisms (300) are provided. All first transmission mechanisms (300) are arranged at intervals in the lateral direction and correspond one-to-one with all the heat sealing mechanisms (200). The first transmission mechanism (300) is connected to the first movable seat (210) and the second movable seat (220) of the corresponding heat sealing mechanism (200). A drive mechanism (110) is disposed on the frame (100) and is connected to all the first transmission mechanisms (300). The drive mechanism (110) can drive the first moving seat (210) and the second moving seat (220) of all the heat sealing mechanisms (200) to move relative to each other or away through the respective first transmission mechanisms (300).

2. The heat sealing device according to claim 1, characterized in that, Each of the first transmission mechanisms (300) includes a rotating component (310), a first connecting component (320), and a second connecting component (330). The rotating component (310) is rotatably mounted on the frame (100) and is connected to the drive mechanism (110) in a transmission manner. One end of the first connecting component (320) is connected to the rotating component (310), and the other end is connected to the corresponding first movable seat (210). One end of the second connecting component (330) is connected to the rotating component (310), and the other end is connected to the corresponding second movable seat (220). The drive mechanism (110) can drive the rotating member (310) to rotate, and through the first connecting member (320) and the second connecting member (330), drive the first moving seat (210) and the second moving seat (220) to move relative to each other or away.

3. The heat sealing device according to claim 2, characterized in that, The rotating component (310) is provided with a first connecting part (311) and a second connecting part (312), and both the first connecting part (311) and the second connecting part (312) are eccentrically arranged with respect to the rotation axis of the rotating component (310). One end of the first connector (320) is rotatably connected to the first connecting part (311), and the other end is rotatably connected to the corresponding first movable seat (210); One end of the second connector (330) is rotatably connected to the second connector (312), and the other end is rotatably connected to the corresponding second movable seat (220).

4. The heat sealing device according to claim 2, characterized in that, The frame (100) is also provided with a second transmission mechanism (400) that is connected to the drive mechanism (110). The first transmission mechanism (300) further includes a swing arm (340), one end of which is connected to the rotating member (310) and arranged coaxially with the rotation axis of the rotating member (310), and the other end is connected to the second transmission mechanism (400). The drive mechanism (110) can drive each of the rocker arms (340) to rotate around the rotation axis of the corresponding rotating member (310) through the second transmission mechanism (400), and drive the rotating member (310) to rotate.

5. The heat sealing device according to claim 4, characterized in that, The second transmission mechanism (400) includes a first link (410) and a link assembly. The link assembly includes a second link (420) corresponding to each of the rocker arms (340). The first link (410) is connected to the output shaft of the drive mechanism (110). One end of the second link (420) is rotatably connected to the corresponding rocker arm (340) and eccentrically arranged with respect to the rotation axis of the rotating member (310). The other end of the second link (420) is drively connected to the first link (410) and eccentrically arranged with respect to the output shaft. The drive mechanism (110) can drive the first link (410) to rotate and drive all the swing arms (340) to rotate around the rotation axis of the corresponding rotating member (310) through the link assembly.

6. The heat sealing apparatus according to claim 5, characterized in that, In the linkage assembly, one of the second linkages (420) is the main drive linkage (421), and the other second linkages (420) are auxiliary drive linkages (422). The end of the main drive linkage (421) away from the corresponding rotating member (310) is rotatably connected to the end of the first linkage (410) away from the output shaft. The end of the auxiliary drive linkage (422) away from the corresponding rotating member (310) is rotatably connected to the adjacent swing arm (340) on the side closer to the main drive linkage (421).

7. The heat sealing apparatus according to claim 5, characterized in that, In the linkage assembly, all the second links (420) are rotatably connected at one end to the corresponding rocker arm (340) and eccentrically arranged on the rotation axis of the rotating member (310), and rotatably connected at the other end to the end of the first link (410) away from the output shaft.

8. The heat sealing apparatus according to claim 1, characterized in that, All the first movable seats (210) are integrally molded structures, and all the second movable seats (220) are integrally molded structures.

9. The heat sealing apparatus according to claim 1, characterized in that, In each group of heat sealing mechanisms (200), the number of heat sealing components (230) is at least two groups. All first heat sealing molds (231) are arranged sequentially on the first movable seat (210) in the transverse direction, and all second heat sealing molds (232) are arranged sequentially on the second movable seat (220) in the transverse direction and are arranged opposite to the corresponding first heat sealing molds (231).

10. A welding nozzle machine, characterized in that, The device is provided with the heat sealing apparatus according to any one of claims 1 to 9.

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