Edge sealing device of bag making machine

Abstract

The utility model relates to the technical field of bag making machine edge sealing, in particular to an edge sealing device of a bag making machine. Comprising a first edge sealing part, a second edge sealing part and a traction device, the traction device is used for pulling an upper film and a lower film to sequentially penetrate through the first edge sealing part and the second edge sealing part, and the first edge sealing part comprises at least two longitudinal heat sealing molds parallel to the feeding direction; a zipper conveying belt used for conveying a zipper and positioning the zipper between the upper film and the lower film is arranged at one longitudinal heat sealing mold; the second edge sealing part comprises a plurality of transverse heat sealing molds parallel to the feeding direction; the transverse sealing width of the transverse heat sealing mold is not smaller than two times of the transverse sealing width of the target bag body. According to the utility model, synchronous heat sealing of the zipper opening end and the longitudinal seal and synchronous heat sealing of the two transverse edges can be realized, and simultaneous heat sealing of adjacent edges of two bag bodies can be carried out according to requirements during heat sealing of the transverse edges and the longitudinal edges, so that the heat sealing efficiency is improved, the heat sealing process is reduced, and the improvement of the product quality is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of edge sealing of bag making machines in the field of classification number B31B, in particular to an edge sealing device of a bag making machine. Background Art

[0002] Bag-making machines are used to produce a variety of plastic or other packaging bags. They can process bags of various sizes, thicknesses, and specifications, with plastic bags being the primary product. Bag-making machines are highly automated and can effectively save labor costs, making them popular with bag manufacturers.

[0003] Currently, in the market, film bag-making processes require composite heat sealing of the bag body. However, existing bag-making machines are usually equipped with multiple heat-sealing stations to heat-seal each side of the bag body one by one. For example, the longitudinal edge of the bag body is first zipper-laminated, and the longitudinal edge and two transverse edges are heat-sealed one by one. This design leads to many processing steps, which affects production efficiency, increases the probability of defective products, and increases equipment costs accordingly. In addition, most bag-making machines on the market are usually customized models. The size of the bags that can be produced is relatively fixed, and the position of the edge sealing device is relatively fixed. When changing the bag-making model, it is necessary to remove the fixing screws, manually move the heat sealing machine, calibrate the position, and then fix it. The heat sealing machine has only a few fixed positions and poor adaptability. Utility Model Content

[0004] In order to solve the technical problems of the current bag-making machine having multiple heat-sealing processing steps, low production efficiency, high equipment cost and poor adaptability, the utility model provides a bag-making machine edge sealing device.

[0005] Specifically, the utility model provides a bag making machine edge sealing device, including a first edge sealing component, a second edge sealing component and a traction device, the traction device is used to pull the upper film and the lower film through the first edge sealing component and the second edge sealing component in sequence, the first edge sealing component includes at least two longitudinal heat sealing molds parallel to the feeding direction, one of the longitudinal heat sealing molds is provided with a zipper conveyor belt for conveying the zipper and positioning it between the upper film and the lower film; the second edge sealing component includes a plurality of transverse heat sealing molds parallel to the feeding direction; the transverse sealing width of the transverse heat sealing mold is not less than twice the transverse sealing width of the target bag body.

[0006] Furthermore, the first edge sealing component also includes a base and a first positioning device; each of the longitudinal heat sealing molds is respectively mounted on the base, and both ends are transmission-connected to the first positioning device for adjusting the relative position on the base according to the bag processing requirements.

[0007] Furthermore, the first positioning device includes a first rack, and first gear adjustment rods are provided at both ends of the longitudinal heat sealing mold. The longitudinal heat sealing mold is translated in the vertical feeding direction on the base through the cooperation of the first gear adjustment rod and the first rack.

[0008] Furthermore, a handle for hand-held adjustment is provided at the end of the longitudinal heat-sealing mold.

[0009] Furthermore, the longitudinal heat sealing mold includes a longitudinal sealing upper mold and a longitudinal sealing lower mold, and the zipper conveyor belt is arranged between the longitudinal sealing upper mold and the longitudinal sealing lower mold.

[0010] Furthermore, the traction device includes an adjusting component arranged between the first edge sealing component and the second edge sealing component; the adjusting component is respectively provided with an adjusting roller group at both ends and a guide roller group in the middle, and the adjusting component adjusts the position height and tension of the processed film after heat sealing through the adjusting roller group and the guide roller group.

[0011] Furthermore, the second edge sealing component also includes a second positioning device arranged on the workbench along the feeding direction, and the transverse heat sealing mold can be translated and arranged on the workbench through the second positioning device.

[0012] Furthermore, the second positioning device includes a support rail, a second rack rail and an adjustment slide; the bottom of the adjustment slide is installed on the support rail, and is provided with a second gear adjustment rod that cooperates with the second rack rail, and is slidably adjusted on the support rail through the cooperation of the second meshing gear and the second rack rail.

[0013] Furthermore, the second gear adjustment rod includes a connecting rod, a hand-cranked wheel arranged at the end of the connecting rod, and an engaging gear sleeved on the connecting rod; the engaging gear is meshedly connected with the second rack.

[0014] Furthermore, there are three longitudinal heat-sealing molds, and the longitudinal heat-sealing molds arranged on the outside are all provided with zipper conveyor belts; the longitudinal sealing width of the longitudinal heat-sealing mold arranged in the middle is not less than twice the longitudinal sealing width of the target bag body.

[0015] The beneficial effects of the utility model are as follows:

[0016] (1) The first edge sealing component and the second edge sealing component heat seal the bag-making film in sequence, and heat seal the opposite sides simultaneously during heat sealing, which can achieve simultaneous heat sealing of the zipper opening end and the longitudinal seal as well as the two transverse edges. When heat sealing the transverse and longitudinal edges, the adjacent edges of the two bag bodies can be heat sealed simultaneously as required, which improves the heat sealing efficiency, reduces the heat sealing process, and helps to improve product quality.

[0017] (2) The longitudinal heat sealing mold and the transverse heat sealing mold can be directional-translated by the first positioning device and the second positioning device respectively, and then quickly adjusted according to the required interval or position, reducing the downtime adjustment time, and adopting the rack-and-rail engagement adjustment method, which can greatly improve the positioning precision and improve the adaptability of the heat sealing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of the edge sealing device of the bag making machine in an embodiment of the present application.

[0019] Figure 2 This is a structural diagram of the first edge sealing component in an embodiment of the present application.

[0020] Figure 3 This is a diagram of the connection of the second edge sealing component in an embodiment of the present application.

[0021] Figure 4 This is a cross-sectional view of the edge sealing device of the bag making machine in an embodiment of the present application.

[0022] Reference numerals:

[0023] The first edge sealing component is 10, the longitudinal heat sealing mold is 11, the base is 12, the first positioning device is 13, the longitudinal sealing upper mold is 111, the longitudinal sealing lower mold is 112, the first rack is 131, and the first gear adjustment rod is 132;

[0024] The second edge sealing component is 20, the transverse heat sealing mold is 21, the second positioning device is 22, the support rail is 221, the second rack rail is 222, the adjustment slide is 223, and the second gear adjustment rod is 224;

[0025] The adjusting component is 30, the adjusting roller group is 31, and the guide roller group is 32;

[0026] The zipper conveyor is 40. DETAILED DESCRIPTION

[0027] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of this application and should not be regarded as an improper restriction on this application.

[0028] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0029] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "multiple" means two or more.

[0030] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components in the drawings.

[0031] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0032] In the embodiments of the present application, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0033] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0034] Example 1:

[0035] Please refer to Figures 1-4 This embodiment provides an edge-sealing device for a bag-making machine, which is used to seal the edges of zippered packaging bags. The device includes a first edge-sealing component 10, a second edge-sealing component 20, and a traction device. The first edge-sealing component 10 and the second edge-sealing component 20 are used to heat-seal the longitudinal and transverse edges of a bag-making film, respectively, to form a bag. The traction device is used to pull the upper and lower films sequentially through the first edge-sealing component 10 and the second edge-sealing component 20, providing traction for the bag-making film.

[0036] Specifically, the first edge-sealing component 10 includes at least two longitudinal heat-sealing molds 11 parallel to the feeding direction. Preferably, two longitudinal heat-sealing molds 11 are provided, each used to heat-seal the upper and lower ends of the bag. Furthermore, a zipper conveyor belt 40 is provided at the bottom of one of the longitudinal heat-sealing molds 11, which is used to transport the zipper and position it between the upper and lower films. This design allows for simultaneous heat sealing of the bag's open end and longitudinal sealing of the opposite side of the open end, improving heat-sealing efficiency.

[0037] Preferably, three longitudinal heat-sealing molds 11 can be provided. Specifically, the outer longitudinal heat-sealing molds 11 are each equipped with a zipper conveyor 40, and the longitudinal heat-sealing mold 11 in the middle has a longitudinal seal width that is no less than twice the target bag longitudinal seal width. This design allows for both longitudinal and open-end heat sealing of the two bags in one heat-sealing operation. Subsequently, the bags can be separated by cutting the bags in the middle of the longitudinal seal, effectively improving longitudinal sealing efficiency.

[0038] On the other hand, the second edge-sealing component 20 is used to achieve transverse sealing of the bag film. The second edge-sealing component 20 includes multiple transverse heat-sealing molds 21 parallel to the feeding direction. The transverse sealing width of the transverse heat-sealing mold 21 is not less than twice the target transverse sealing width of the bag. Since the transverse heat-sealing mold 21 is parallel to the feeding direction, this design allows the transverse sealing of the edges of the left and right bags to be completed in one heat seal. For example, a single heat seal of a transverse heat-sealing mold 21 can complete the transverse heat sealing of the right side of the left bag and the left side of the right bag. Arranging multiple transverse heat-sealing molds 21 side by side can achieve simultaneous heat sealing of multiple heat-sealing points, effectively improving the efficiency of bag processing and increasing the output of products per unit time.

[0039] The advantage of this embodiment is that the first edge-sealing component 10 and the second edge-sealing component 20 heat-seal the bag-making film in sequence, and heat-seal the opposite sides simultaneously during heat sealing, which can achieve simultaneous heat sealing of the zipper opening end and the longitudinal seal and the two transverse edges. Moreover, when heat-sealing the transverse and longitudinal edges, the adjacent edges of the two bag bodies can be heat-sealed simultaneously as required, thereby improving the heat-sealing efficiency, reducing the heat-sealing process, and helping to improve product quality.

[0040] In addition, the longitudinal heat sealing mold 11 and the transverse heat sealing mold 21 can be directionally translated by the first positioning device 13 and the second positioning device 22 respectively, and then quickly adjusted according to the required interval or position, reducing the downtime adjustment time, and adopting the rack-and-rail engagement adjustment method, which can greatly improve the positioning precision and improve the adaptability of the heat sealing equipment.

[0041] In terms of the first edge sealing component 10, as a preferred embodiment of the present invention, the first edge sealing component 10 further includes a base 12 and a first positioning device 13. Each longitudinal heat sealing mold 11 is respectively mounted on the base 12. Preferably, a guide rail is provided on the side of the base 12, and the longitudinal heat sealing mold 11 is provided with an assembly seat that cooperates with the guide rail. The assembly seat of the longitudinal heat sealing mold 11 is sleeved on the guide rail, thereby achieving directional sliding of the longitudinal heat sealing mold 11 on the base 12. In terms of adjustment, both ends of the longitudinal heat sealing mold 11 are transmission-connected to the first positioning device 13 for adjusting the relative position on the base 12 according to the requirements of the bag processing.

[0042] Further preferably, the first positioning device 13 includes a first rack 131, and first gear adjustment rods 132 are provided at both ends of the longitudinal heat sealing mold 11. The longitudinal heat sealing mold 11 is translated vertically in the feed direction on the base 12 through the cooperation of the first gear adjustment rod 132 and the first rack 131. Also preferably, a handle for handheld adjustment is provided at the end of the longitudinal heat sealing mold 11. During adjustment, the operator can unlock the longitudinal heat sealing mold 11 and then use the handle to drive the first gear adjustment rod 132 to slide along the first rack 131, thereby adjusting the relative position of the longitudinal heat sealing mold 11. Specifically, the longitudinal heat sealing mold 11 is provided with a switch lever on one side of the first gear adjustment rod 132 for locking and adjusting the position. The switch lever is provided with an abutment rod that can be extended and retracted within the switch lever. The abutment rod is adjusted up and down by the adjustment handle on the switch lever. When the switch lever is lowered and fixed by the adjustment handle, the abutment rod contacts the connecting seat on the side of the first rack 131, thereby locking the longitudinal heat sealing mold 11. When unlocking, the abutment rod is lifted by the adjustment handle on the switch rod to release the lock of the longitudinal heat sealing mold 11.

[0043] As a preferred embodiment of this embodiment, the longitudinal heat-sealing mold 11 includes an upper longitudinal sealing mold 111 and a lower longitudinal sealing mold 112. A zipper conveyor belt 40 is disposed between the upper longitudinal sealing mold 111 and the lower longitudinal sealing mold 112. It is used to synchronously move the zipper with the upper and lower molds and to laminate the upper and lower films during heat sealing of the open end. Specifically, the structure and traction principle of the zipper conveyor belt 40 are similar to those of the upper and lower molds and are conventional in the field of power traction for bag making, and will not be described in detail here.

[0044] As a preferred embodiment of this embodiment, a traction device is used to pull the upper and lower films to move on the bag making machine and has functions such as guiding and tension adjustment. Specifically, the traction device also includes an adjustment component 30 disposed between the first edge sealing component 10 and the second edge sealing component 20. The adjustment component 30 is respectively provided with an adjustment roller group 31 at both ends and a guide roller group 32 in the middle. The adjustment component 30 adjusts the position, height and tension of the processed film after heat sealing by adjusting the roller group 31 and the guide roller group 32, so that the preliminary processed bag body after longitudinal sealing / open end heat sealing can maintain a certain tension and be installed at a specified height to enter the corresponding working position of the second edge sealing component 20.

[0045] With respect to the second edge-sealing component 20, as a preferred embodiment of this embodiment, the second edge-sealing component 20 further includes a second positioning device 22 disposed on a workbench along the feed direction, by which the transverse heat-sealing mold 21 can be translated and positioned on the workbench. Specifically, the second positioning device 22 includes a support rail 221, a second rack 222, and an adjustment slide 223. The support rail 221 is disposed on the workbench along the feed direction. The adjustment slide 223 is connected to the transverse heat-sealing mold 21, with its bottom mounted on the support rail 221, for slidingly mounting the transverse heat-sealing mold 21 on the support rail 221. The adjustment slide 223 is further provided with a second gear adjustment rod 224 that engages with the second rack 222. The second gear adjustment rod 224 and the second rack 222 cooperate to slide and adjust the transverse heat-sealing mold 21 on the support rail 221. Preferably, the second gear adjustment rod 224 includes a connecting rod, a hand crank, and a meshing gear. The hand crank is disposed at the end of the connecting rod for the operator to hold the rocker. The meshing gear is sleeved on the connecting rod and meshed with the second rack 222 for rotating after the operator rockers the lever, thereby driving the transverse heat sealing mold 21 to move on the equipment.

[0046] It is worth noting that during the process of zipper compounding and horizontal and vertical edge heat sealing of the bag body by the edge sealing device of the bag making machine, the zipper can be spot-hoted by the spot-hoting device, and cutting equipment can be added at the subsequent workstation to realize the cutting of multiple formed bags. The specific cutting position is set at the midline of the adjacent heat-sealed area between two adjacent bags.

[0047] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A bag-making machine edge sealing device, comprising a first edge sealing component, a second edge sealing component and a traction device, wherein the traction device is used to pull the upper film and the lower film through the first edge sealing component and the second edge sealing component in sequence, characterized in that: The first edge sealing component includes at least two longitudinal heat sealing molds parallel to the feeding direction, and one of the longitudinal heat sealing molds is provided with a zipper conveyor belt for conveying the zipper and positioning it between the upper film and the lower film; the second edge sealing component includes multiple transverse heat sealing molds parallel to the feeding direction; the transverse sealing width of the transverse heat sealing mold is not less than twice the transverse sealing width of the target bag body.

2. The edge sealing device of the bag making machine according to claim 1, characterized in that: The first edge sealing component also includes a base and a first positioning device; each of the longitudinal heat sealing molds is respectively mounted on the base, and both ends are transmission-connected to the first positioning device for adjusting the relative position on the base according to the bag processing requirements.

3. The edge sealing device of the bag making machine according to claim 2, characterized in that: The first positioning device includes a first rack, and first gear adjustment rods are provided at both ends of the longitudinal heat sealing mold. The longitudinal heat sealing mold is translated in the vertical feeding direction on the base through the cooperation of the first gear adjustment rod and the first rack.

4. The edge sealing device of the bag making machine according to claim 3, characterized in that: The end of the longitudinal heat sealing mold is provided with a handle for hand-held adjustment.

5. The edge sealing device of the bag making machine according to claim 1, characterized in that: The longitudinal heat sealing mold comprises a longitudinal sealing upper mold and a longitudinal sealing lower mold, and the zipper conveyor belt is arranged between the longitudinal sealing upper mold and the longitudinal sealing lower mold.

6. The edge sealing device of the bag making machine according to claim 1, characterized in that: The traction device includes an adjusting component arranged between the first edge sealing component and the second edge sealing component; the adjusting component is respectively provided with an adjusting roller group at both ends and a guide roller group in the middle. The adjusting component adjusts the position height and tension of the processed film after heat sealing through the adjusting roller group and the guide roller group.

7. The edge sealing device of the bag making machine according to claim 1, characterized in that: The second edge sealing component further includes a second positioning device disposed on the workbench along the feeding direction, and the transverse heat sealing mold can be translated and disposed on the workbench through the second positioning device.

8. The edge sealing device of the bag making machine according to claim 7, characterized in that: The second positioning device includes a supporting rail, a second rack rail and an adjusting slide; the bottom of the adjusting slide is installed on the supporting rail, and is provided with a second gear adjusting rod that cooperates with the second rack rail, and is slidably adjusted on the supporting rail through the cooperation of the second gear adjusting rod and the second rack rail.

9. The edge sealing device of the bag making machine according to claim 8, characterized in that: The second gear adjustment rod includes a connecting rod, a hand-cranked wheel arranged at the end of the connecting rod, and an engaging gear sleeved on the connecting rod; the engaging gear is meshed and connected with the second rack.

10. The edge sealing device of the bag making machine according to claim 1, characterized in that: There are three longitudinal heat-sealing molds, and the longitudinal heat-sealing molds arranged on the outside are all provided with zipper conveyor belts; the longitudinal sealing width of the longitudinal heat-sealing mold arranged in the middle is not less than twice the longitudinal sealing width of the target bag body.

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