A kind of edge shaping module, edge shaping device and vertical packaging machine

Abstract

The present application relates to the technical field of packaging machinery, in particular to a hemming forming module, a hemming forming device and a vertical packaging machine. The hemming forming module comprises a hemming hot-pressing assembly, a hemming driving assembly and a hemming linkage assembly. The hemming hot-pressing assembly comprises a first hemming hot-pressing piece and a second hemming hot-pressing piece oppositely arranged in a second direction, and a guide structure and an elastic structure with adjustable elastic pressure are arranged between the two. The guide structure guides the second hemming hot-pressing piece to switch between a pressing position and a separation position. The hemming driving assembly drives the first hemming hot-pressing piece to reciprocate along a third direction. The hemming linkage assembly synchronously drives the second hemming hot-pressing piece to switch between the pressing position and the separation position when the driving assembly is in action. The present application synchronously controls the opening and closing of the two hot-pressing pieces and the advance and retreat of the hot-pressing pieces relative to the former by a single power source, and has the advantages of compact structure, low cost, high reliability, high film mounting efficiency, adjustable clamping force and adaptation to different film materials.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment technology, and in particular to a hot-stamping forming module, a hot-stamping forming device, and a vertical packaging machine. Background Technology

[0002] In the field of vertical film flexible bag packaging machines, the production of hot-stamped bags is usually accomplished using a hot-stamping forming mechanism. This mechanism consists of multiple hot-stamping forming modules working together to achieve simultaneous hot-pressing of multiple hot-stamped edges on the bag body. Existing hot-stamping forming modules generally use two hot-stamping heat-pressing components, which heat-press the film together through relative motion to form the desired hot-stamped edge structure. However, in actual production applications, limited by the internal installation space of the equipment, the two hot-stamping heat-pressing components in existing modules can only achieve simple opening and closing actions through the drive mechanism, and cannot be flexibly adjusted in position according to process requirements. This structural design results in extremely limited usable clearance between the hot-stamping heat-pressing components and the forming unit. When changing film rolls or performing film threading operations, insufficient operating space severely restricts film loading efficiency and increases downtime. Simultaneously, the hot-stamping clamping force of existing modules is fixedly output by the drive mechanism, lacking effective adjustment methods. This makes it impossible to differentiate and adapt to films of different materials, thicknesses, or heat-sealing properties, resulting in unstable hot-stamping quality, poor applicability, and difficulty in meeting the needs of diversified packaging production. Summary of the Invention The purpose of this invention is to provide an edge-heating forming module, an edge-heating forming device, and a vertical packaging machine to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0003] The technical solution adopted to solve the above-mentioned technical problems is as follows: This invention provides a hot-edge forming module, comprising: The hot-pressing edge assembly includes a first hot-pressing edge member and a second hot-pressing edge member extending along a first direction. The first hot-pressing edge member and the second hot-pressing edge member are disposed opposite each other in a second direction, and a guide structure and an elastic structure are provided between them. The guide structure is used to guide the second hot-pressing edge member to slide back and forth relative to the first hot-pressing edge member in the second direction, so that the second hot-pressing edge member has a pressing position close to the first hot-pressing edge member and a separating position away from the first hot-pressing edge member. The elastic structure is used to provide elastic pressure to drive the second hot-pressing edge member to move from the separating position toward the pressing position, and the magnitude of the elastic pressure is adjustable. The edge-heating drive assembly is connected to the first edge-heating hot press component for driving the first edge-heating hot press component to reciprocate along a third direction; The edge-heating linkage assembly includes a first linkage structure and a second linkage structure. The first linkage structure is fixed on the mounting base, and the second linkage structure is fixed on the second edge-heating hot press. The second linkage structure is linked and cooperates with the first linkage structure to drive the second edge-heating hot press to switch between the pressing position and the separating position when the first edge-heating hot press moves reciprocally along the third direction. Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

[0004] The advantages of the hot-edge forming module of the present invention are: This invention, through the configuration of the hot-edge linkage component, enables the hot-edge driving component to simultaneously drive the second hot-edge pressing component to switch between a pressing position and a separating position in a second direction when driving the first hot-edge pressing component to move closer to or away from the forming device in a third direction. Specifically, when the first hot-edge pressing component approaches the forming device, the second hot-edge pressing component switches to the pressing position; when the first hot-edge pressing component moves away from the forming device, the second hot-edge pressing component switches to the separating position. This achieves simultaneous control of the opening and closing actions of the two hot-edge pressing components and their forward and backward movements relative to the forming device through a single power source. This purely mechanical transmission method of driving and linkage separation effectively reduces the number of power sources, lowers manufacturing costs, improves operational reliability, and makes the overall structure more compact. At the same time, it significantly increases the operating gap when the two hot-edge pressing components separate, facilitating film threading operations and greatly improving film loading efficiency. In addition, by setting an elastic structure with adjustable elastic pressure between the two hot-edge pressing components, the hot-edge clamping force can be flexibly adjusted according to the material, thickness, and heat-sealing performance of different films, effectively improving the hot-edge quality and the process adaptability of the equipment.

[0005] As a further improvement to the above technical solution, the first linkage structure includes at least one first linkage member, the first linkage member having a linkage guide portion that is inclined relative to both the second direction and the third direction, and the second linkage structure includes at least one second linkage member, the second linkage member slidingly engaging with the linkage guide portion.

[0006] As a further improvement to the above technical solution, the linkage guide is an inclined guide edge, the second linkage component is a roller, the axis of the roller extends along the first direction, and the roller rolls in cooperation with the inclined guide edge.

[0007] As a further improvement to the above technical solution, multiple first linkage components are provided, and the multiple first linkage components are arranged at intervals along the first direction. Multiple second linkage components are also provided, and the linkage guides of the multiple second linkage components are matched one-to-one with the linkage guides of the multiple first linkage components.

[0008] As a further improvement to the above technical solution, the guide structure includes a first guide seat and a second guide seat. The first guide seat is fixed to the first hot-pressing part, and the second guide seat is fixed to the second hot-pressing part. The second guide seat and the first guide seat are slidably connected along the second direction. The elastic structure is connected between the first guide seat and the second guide seat.

[0009] As a further improvement to the above technical solution, the elastic structure includes an adjusting member and an elastic member. The adjusting member extends along the second direction, one end of the adjusting member is connected to the first guide seat, and the other end is provided with an adjusting block. The axial position of the adjusting block on the adjusting member is adjustable. One end of the elastic member abuts against the side of the second guide seat opposite to the first guide seat, and the other end abuts against the adjusting block.

[0010] As a further improvement to the above technical solution, the mounting base is a mounting base, the first hot-pressing edge component is slidably mounted on the mounting base along the third direction, the hot-pressing edge driving assembly is mounted on the mounting base, and the driving end of the hot-pressing edge driving assembly is connected to the first hot-pressing edge component in a transmission connection.

[0011] As a further improvement to the above technical solution, both the first hot-pressed edge component and the second hot-pressed edge component are provided with heating elements; The first hot-pressed edge component and the second hot-pressed edge component are respectively provided with a plurality of hot-pressing rollers on their opposite sides. The plurality of hot-pressing rollers are arranged at intervals along the first direction, and the axis of each hot-pressing roller extends along the third direction.

[0012] Furthermore, the present invention proposes a hot edge forming device, including a forming device and multiple hot edge forming modules. The multiple hot edge forming modules are arranged in a ring-shaped interval around the forming device. The third direction is the same as the radial direction corresponding to the forming device, and the first direction is parallel to the axial direction of the forming device.

[0013] The present invention also proposes a vertical packaging machine, including an edge-forming device.

[0014] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of an embodiment of the hot-edge forming module provided by the present invention. Figure 1 ; Figure 2This is a schematic diagram of an embodiment of the hot-edge forming module provided by the present invention. Figure 2 ; Figure 3 This is an exploded view of an embodiment of the hot-edge forming module provided by the present invention; Figure 4 This is a visual schematic diagram along a first direction of an embodiment of the hot-edge forming module provided by the present invention; Figure 5 yes Figure 8 A magnified view of part B in the middle section; Figure 6 yes Figure 4 Sectional view of section AA; Figure 7 This is a schematic diagram of an embodiment of the hot-edge forming device provided by the present invention; Figure 8 yes Figure 7 A sectional view along the first direction; Icon labels: Hot-pressing edge assembly 100; first hot-pressing edge component 110; second hot-pressing edge component 120; guide structure 130; first guide seat 131; first through hole 1311; second guide rod 1312; second guide seat 132; second through hole 1321; abutment step 1322; first guide rod 133; elastic structure 140; adjusting component 141; bolt 1411; elastic component 142; coil spring 1421; adjusting block 143; nut 1431; heating element 150; hot-pressing roller 160; Edge heating drive assembly 200; cylinder 210; Ironing edge linkage assembly 300; first linkage structure 310; first linkage component 311; linkage guide part 3111; inclined guide edge 3112; second linkage structure 320; second linkage component 321; Mounting base 400; Molding machine 500; 600 heat-forming module. Detailed Implementation

[0016] Embodiments of the present invention 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 the present invention, and should not be construed as limiting the present invention.

[0017] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0018] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0019] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0021] Reference Figures 1-6 The hot-edge forming module 600 of the present invention is provided in the following embodiment: To facilitate a clear description of the spatial positions and movement relationships of each component, this embodiment predefines a first direction, a second direction, and a third direction that are mutually perpendicular. The first direction can be flexibly set according to the actual installation posture of the hot-edge forming module 600, for example, it can be set as a vertical direction (up-down direction) or a horizontal direction (left-right direction), etc. The second and third directions are determined accordingly. It should be noted that the above direction definitions are only used to describe relative positional relationships and do not constitute any limitation on the actual usage posture of this invention.

[0022] like Figure 1 and Figure 2 As shown, the hot-edge forming module 600 of the present invention includes: a hot-edge hot-pressing component 100, a hot-edge driving component 200, and a hot-edge linkage component 300.

[0023] like Figure 1 and Figure 2 As shown, the hot-pressing edge assembly 100 includes a first hot-pressing edge member 110 and a second hot-pressing edge member 120 that extend longitudinally along a first direction. The first hot-pressing edge member 110 and the second hot-pressing edge member 120 are opposite to each other and spaced apart in a second direction, and a guide structure 130 and an elastic structure 140 are provided between them.

[0024] like Figure 1As shown, the guide structure 130 connects the first hot-pressing element 110 and the second hot-pressing element 120 respectively, and guides the second hot-pressing element 120 to slide back and forth relative to the first hot-pressing element 110 in a second direction, so that the second hot-pressing element 120 has a pressing position close to the first hot-pressing element 110 and a separating position away from the first hot-pressing element 110. When the second hot-pressing element 120 is in the pressing position, the second hot-pressing element 120 and the first hot-pressing element 110 together clamp the film and perform hot pressing to realize hot-pressing; when the second hot-pressing element 120 is in the separating position, a sufficient gap is formed between the two to facilitate film threading and film replacement operations.

[0025] Specifically in this embodiment, such as Figure 1 , Figure 3 and Figure 4 As shown, the guide structure 130 includes a first guide seat 131 and a second guide seat 132. The first guide seat 131 is fixedly connected to the first hot-pressing member 110, and the second guide seat 132 is fixedly connected to the second hot-pressing member 120. The second guide seat 132 and the first guide seat 131 are slidably engaged in a second direction. To achieve this slidable engagement, in this embodiment, a plurality of first guide rods 133 extending along the second direction are provided between the first guide seat 131 and the second guide seat 132. The first guide rods 133 are fixedly connected to the second guide seat 132, and the first guide rods 133 are slidably engaged with the first guide seat 131. Through the slidable engagement between the first guide rods 133 and the first guide seat 131, the second guide seat 132, together with the second hot-pressing member 120, can slide smoothly in the second direction relative to the first guide seat 131 and the first hot-pressing member 110 fixed thereon, thereby accurately switching between the pressing position and the separating position. The guide structure 130 has the advantages of simple structure, smooth sliding and high guiding accuracy. It can effectively ensure the alignment accuracy of the two hot-pressed parts during the reciprocating motion and avoid uneven hot-pressing caused by skew.

[0026] In other feasible embodiments, the guide structure 130 may also adopt other forms of sliding fit structure, such as: a slide rail extending in the second direction is provided on the first guide seat 131, and a slider adapted to the slide rail is provided on the second guide seat 132; or a guide groove extending in the second direction is provided on the first guide seat 131, and a guide protrusion slidingly engaged with the guide groove is provided on the second guide seat 132; or a linear bearing and guide shaft can be used to cooperate, all of which can achieve the same guiding function. Those skilled in the art can make reasonable choices according to the actual installation space, processing cost and accuracy requirements.

[0027] like Figure 2 and Figure 3As shown, the elastic structure 140 acts between the first hot-pressing member 110 and the second hot-pressing member 120 to provide elastic pressure that drives the second hot-pressing member 120 to move from the separation position to the pressing position, and the magnitude of the elastic pressure can be adjusted according to process requirements.

[0028] In this embodiment, the elastic structure 140 is connected between the first guide seat 131 and the second guide seat 132. It is understood that in other embodiments, the elastic structure 140 may also be directly connected between the first hot-pressing member 110 and the second hot-pressing member 120, and is not limited to being indirectly connected through the guide seats.

[0029] Specifically, such as Figure 3 and Figure 5 As shown, the elastic structure 140 of this embodiment includes an adjusting member 141 and an elastic member 142. The adjusting member 141 extends along a second direction, one end of which is connected to the first guide seat 131, and the other end is provided with an adjusting block 143. The axial position of the adjusting block 143 on the adjusting member 141 is adjustable. One end of the elastic member 142 abuts against the side of the second guide seat 132 facing away from the first guide seat 131, and the other end abuts against the adjusting block 143. By adjusting the axial position of the adjusting block 143 on the adjusting member 141, the compression amount of the elastic member 142 can be changed, thereby adjusting the magnitude of the elastic pressure exerted by the elastic member 142 on the second guide seat 132. Its working principle is that after the elastic member 142 is compressed, it generates a restoring force. This restoring force is transmitted to the second hot-pressing member 120 through the second guide seat 132, driving the second hot-pressing member 120 to move toward the first hot-pressing member 110 and clamp the film located between the two. When it is necessary to increase the clamping force of the hot edge, the adjusting block 143 is rotated in the direction of compressing the elastic element 142 to increase the compression of the elastic element 142, and the elastic restoring force increases accordingly; conversely, the adjusting block 143 is rotated out in the opposite direction to reduce the compression of the elastic element 142, and the clamping force decreases accordingly.

[0030] As one specific implementation of this embodiment, such as Figure 5As shown, the adjusting component 141 is a bolt 1411, the adjusting block 143 is a nut 1431 that is threaded into the bolt 1411, and the elastic component 142 is a coil spring 1421. A first through hole 1311 is provided on the first guide seat 131, and a second through hole 1321 is provided on the second guide seat 132. The bolt 1411's screw passes through the first through hole 1311 and the second through hole 1321 in sequence, and the nut of the bolt 1411 abuts against the end of the first through hole 1311 facing away from the second through hole 1321. An abutting step 1322 facing away from the first through hole 1311 is provided in the second through hole 1321. The coil spring 1421 is sleeved on the outer circumference of the bolt 1411's screw, with one end of the coil spring abutting against the abutting step 1322 in the second through hole 1321 and the other end abutting against the nut 1431. By turning the nut 1431, the axial position of the nut 1431 on the bolt 1411 can be changed, thereby adjusting the compression degree of the helical spring 1421 and thus the magnitude of the elastic pressure. This structure is simple, reliable, low-cost, and easy to adjust. Furthermore, the helical spring 1421 has stable load and deformation characteristics, providing continuous and linear elastic pressure, which is beneficial for precise control of the heat-sealing pressure.

[0031] It is understood that in other embodiments, the adjusting member 141, the adjusting block 143, and the elastic member 142 may also adopt other equivalent structures. For example, the adjusting member 141 may be a screw, the adjusting block 143 may be an adjusting sleeve that is threaded with the screw, and the elastic member 142 may be a wave spring, a disc spring, or an elastic rubber body, as long as it can provide an adjustable elastic biasing force. In addition, the connection between the adjusting member 141 and the first guide seat 131 may also be a fixed connection method such as threaded connection, snap-fit, or welding, all of which are equivalent variations of the present invention.

[0032] This embodiment incorporates an elastic structure 140 with adjustable elastic pressure between two hot-pressing components, allowing the hot-pressing clamping force to be flexibly adjusted according to the film's material (such as polyethylene, polypropylene, composite film, etc.), thickness (such as thin film, thick film), and heat-sealing performance (such as heat-sealing temperature window, heat-sealing strength, etc.). This ensures both the firmness and sealing of the hot-pressed edges, while effectively preventing quality problems such as film burn-through or sticking to the roller due to excessive clamping force, or weak hot-pressing or incomplete sealing due to insufficient clamping force. This significantly improves the quality of the hot-pressed edges and the process adaptability of the equipment.

[0033] The edge-heating drive assembly 200 is connected to the first edge-heating hot press 110 for driving the first edge-heating hot press 110 to reciprocate along a third direction, thereby driving the entire edge-heating hot press assembly 100 to move closer to or away from the forming device 500.

[0034] In this embodiment, the mounting base is the mounting base 400. The first hot-pressed edge member 110 is indirectly slidably mounted on the mounting base 400 along a third direction via the guide structure 130. Specifically, as shown... Figure 6 As shown, a number of second guide rods 1312 extending along a third direction are fixedly connected to the first guide seat 131. The second guide rods 1312 slide with the guide holes or linear bearings on the mounting base 400, thereby realizing the smooth sliding of the first guide seat 131 together with the first hot-pressed part 110 relative to the mounting base 400 along a third direction.

[0035] like Figure 1 and 6 As shown, the edge-pressing drive assembly 200 is mounted on the mounting base 400, and its drive end is connected to the first edge-pressing hot-pressing component 110. In this embodiment, the edge-pressing drive assembly 200 uses a cylinder 210. The cylinder body of the cylinder 210 is fixedly mounted on the mounting base 400, and the telescopic end of the cylinder 210 is fixedly connected to the first guide seat 131. By controlling the air intake and exhaust of the cylinder 210, the piston rod can be driven to extend or retract, thereby driving the first guide seat 131 and the first edge-pressing hot-pressing component 110 fixed thereon to reciprocate along a third direction. The cylinder 210 drive has the advantages of simple structure, fast response speed, reliable operation, and low cost, and is especially suitable for frequent reciprocating motion conditions in the packaging machinery field.

[0036] It is understood that in other embodiments, the hot edge driving assembly 200 may also adopt other driving components, such as hydraulic cylinders, electric cylinders, linear motors, or linear motion mechanisms converted from rotary motors and lead screw and nut mechanisms, etc., which can all realize the function of driving the first hot edge pressing component 110 to move in a third direction. Those skilled in the art can make reasonable selections according to actual working conditions.

[0037] like Figure 4 and Figure 6 As shown, the hot edge linkage assembly 300 includes a first linkage structure 310 and a second linkage structure 320. The first linkage structure 310 is fixed to the mounting base 400 (i.e., fixedly disposed in the space where the hot edge forming module 600 is located), and the second linkage structure 320 is fixed to the second hot edge hot press 120 (specifically, it can be fixed to the second guide seat 132 or the body of the second hot edge hot press 120). The second linkage structure 320 is linked and cooperates with the first linkage structure 310 to drive the second hot edge hot press 120 to switch between the pressing position and the separating position when the first hot edge hot press 110 reciprocates along a third direction.

[0038] Specifically in this embodiment, such as Figure 4 and Figure 6As shown, the first linkage structure 310 includes at least one first linkage member 311, which is fixedly installed on the mounting base 400 and has a linkage guide portion 3111 inclined relative to both the second and third directions. The second linkage structure 320 includes at least one second linkage member 321, which is fixed to the second guide seat 132 or the second hot-pressing member 120, and the second linkage member 321 slides in cooperation with the linkage guide portion 3111.

[0039] like Figure 4 and Figure 6 As shown, when the hot edge driving assembly 200 drives the first hot edge pressing member 110 to move along a third direction, the second hot edge pressing member 120, fixed to the first hot edge pressing member 110, moves along the third direction together with the first hot edge pressing member 110. At the same time, the second linkage member 321 slides along the inclined linkage guide 3111 under the constraint of the linkage guide 3111. Since the linkage guide 3111 is inclined relative to both the second direction and the third direction, the second linkage member 321 will be subjected to a normal reaction force from the linkage guide 3111 while moving along the third direction with the first hot edge pressing member 110. The component of this reaction force in the second direction drives the second linkage member 321 and the second hot edge pressing member 120 to displace in the second direction. In other words, the linkage guide 3111 converts the linear movement of the first hot-pressing part 110 along a third direction into the linear movement of the second hot-pressing part 120 along a second direction through the inclined surface cooperation. This achieves the linkage effect that when the first hot-pressing part 110 approaches the molding unit 500, the second hot-pressing part 120 switches to the pressing position; and when the first hot-pressing part 110 moves away from the molding unit 500, the second hot-pressing part 120 switches to the separation position.

[0040] By configuring the aforementioned edge-sealing linkage component 300, this invention enables the edge-sealing drive component 200 to simultaneously drive the second edge-sealing hot-pressing component 120 to switch between a pressing position and a separating position in a second direction while driving the first edge-sealing hot-pressing component 110 to move closer to or away from the forming device 500. Specifically: when the first edge-sealing hot-pressing component 110 moves closer to the forming device 500, the second edge-sealing hot-pressing component 120 switches to the pressing position, clamping the film together with the first edge-sealing hot-pressing component 110 for edge sealing; when the first edge-sealing hot-pressing component 110 moves away from the forming device 500, the second edge-sealing hot-pressing component 120 switches to the separating position, releasing the film and increasing the operating gap. This achieves simultaneous control of the opening and closing actions of the two edge-sealing hot-pressing components and their forward and backward movements relative to the forming device 500 through a single power source, greatly simplifying the drive system.

[0041] This purely mechanical transmission method, which separates the drive and linkage, effectively reduces the number of power sources, simplifies the control logic, lowers manufacturing costs and failure rates, and improves the long-term operational reliability of the equipment compared to the traditional solution of configuring a separate driver for each hot-pressing component. Simultaneously, since there is no need to set up a separate drive mechanism and its associated installation space for the second hot-pressing component 120, the overall structure is more compact, facilitating its arrangement within the limited installation space inside a vertical packaging machine. Furthermore, sufficient operating clearances can be formed between the second hot-pressing component 120 and the first hot-pressing component 110 in the separation position, as well as between both of them and the forming unit 500, effectively solving the problem of insufficient clearance mentioned in the background art. Operators can easily complete film threading and film roll replacement operations, significantly shortening downtime and improving film loading efficiency.

[0042] To further optimize the smoothness and durability of the linkage and coordination, such as Figure 4 As shown, in this embodiment, the linkage guide 3111 is an inclined guide edge 3112, which is an arc-shaped edge. In some other embodiments, the linkage guide 3111 may be provided in an inclined groove or inclined rail on the first linkage member 311. In this embodiment, the second linkage member 321 is a roller, with its axis extending along a first direction. The outer circumferential surface of the roller rolls against the inclined guide edge 3112. Compared to a sliding fit, the rolling fit between the roller and the inclined guide edge 3112 significantly reduces frictional resistance, making the linkage action smoother and more sensitive. It also reduces frictional wear, extends the service life of components, and lowers the maintenance frequency.

[0043] To improve the stability and reliability of the linkage, such as Figure 6 As shown, multiple first linkage members 311 are provided, and the multiple first linkage members 311 are arranged at intervals along the first direction; correspondingly, multiple second linkage members 321 are also provided, and the multiple second linkage members 321 slide in a one-to-one correspondence with the linkage guide parts 3111 of the multiple first linkage members 311. By setting multiple linkage engagement points in the first direction, the second hot-pressing member 120 can be subjected to more uniform force when sliding along the second direction, avoiding the phenomenon of uneven load or jamming caused by single-point drive, and further ensuring that the pressure of the hot-pressing member is uniform and consistent along the first direction when it is pressed, which is conducive to obtaining a flat and continuous hot-pressing effect.

[0044] It is understood that in other embodiments, the cooperation between the linkage guide 3111 and the second linkage member 321 can also adopt other equivalent structures. For example, a guide wheel or slider can be provided on the second linkage member 321, and a slant groove, slant rail, or slant plate can be provided on the first linkage member 311; or a combination of a cam and a follower can be used; or a hinged linkage mechanism can be used to achieve the change of direction. As long as the movement of the first hot-pressing member 110 along a third direction can be converted into the displacement of the second hot-pressing member 120 along a second direction, it belongs to the equivalent embodiment of the present invention.

[0045] like Figure 1 and Figure 2 As shown, both the first hot-pressing component 110 and the second hot-pressing component 120 are equipped with heating elements 150. The heating elements 150 are used to heat the corresponding hot-pressing components to reach the process temperature required for film heat sealing. The heating elements 150 are installed inside or on the surface of the corresponding hot-pressing component, extending longitudinally along a first direction. In this embodiment, the heating element 150 can be a heating tube or a heating wire, which can be selected according to the required heating power, temperature uniformity, and service life. To further precisely control the hot-pressing temperature, the first hot-pressing component 110 and the second hot-pressing component 120 are also equipped with temperature sensors (such as thermocouples or thermistors). The temperature sensors are electrically connected to an external temperature controller to detect the temperature of the hot-pressing components in real time and feed it back to the temperature controller, forming a closed-loop temperature control to ensure that the hot-pressing temperature remains stable within the set range and avoids hot-pressing quality defects caused by temperature fluctuations.

[0046] It is understood that in other embodiments, the heating element 150 may also use other forms of heating sources, such as high-frequency induction heating, infrared radiation heating or heat transfer oil circulation heating, all of which can achieve the heating function of hot-pressed parts.

[0047] like Figure 3 , Figure 5 and Figure 6As shown, the first hot-pressing component 110 and the second hot-pressing component 120 are respectively provided with multiple hot-pressing rollers 160 on their opposite sides (i.e., facing sides). The multiple hot-pressing rollers 160 are arranged at intervals along a first direction, and the axis of each hot-pressing roller 160 extends along a third direction. The first hot-pressing component 110 and the second hot-pressing component 120 respectively contact the film through the hot-pressing rollers 160, applying pressure and heat to the film during the hot-pressing process. The hot-pressing rollers 160 can rotate freely around their own axes. When the film runs along the first direction (i.e., the film conveying direction) under the action of traction force, a rolling contact is formed between the hot-pressing rollers 160 and the film. Compared with the sliding contact on a fixed plane, the rolling contact significantly reduces the friction force, effectively avoiding the film from stretching deformation, wrinkling, or surface scratches caused by excessive frictional resistance during the hot-pressing process, ensuring the aesthetics and sealing strength of the hot-pressed area. Meanwhile, multiple hot press rollers 160 are arranged at intervals along the first direction, so that the heat and heat of the hot edge are evenly distributed along the first direction, which is conducive to forming a continuous and flat hot edge trajectory, especially suitable for the forming needs of long strip hot edges in vertical bag making and packaging machines.

[0048] It is understood that in other embodiments, the number and spacing of the hot press rollers 160 can be reasonably set according to the actual ironing edge length and film characteristics; where space permits, a whole strip of hot press plate can also be used to replace the hot press rollers 160, and the hot press plate and the film are in surface contact, which is suitable for occasions with special requirements for the ironing edge width.

[0049] In addition, such as Figure 7 and Figure 8 As shown, the present invention also proposes an edge-forming device for use in a vertical bag making and packaging machine to perform circumferential edge-forming on the film.

[0050] The edge-pressing forming apparatus of the present invention includes a forming device 500 and a plurality of the aforementioned edge-pressing forming modules 600. The forming device 500 is a cylindrical structure extending longitudinally along the axial direction. During transport, the film covers the outer peripheral surface of the forming device 500 and is transported forward along the axial direction of the forming device 500. The plurality of edge-pressing forming modules 600 are arranged in a ring-shaped interval around the outer peripheral surface of the forming device 500, and each edge-pressing forming module 600 performs edge-pressing operations on the film covering the outer periphery of the forming device 500 from different circumferential positions.

[0051] It should be noted that the third direction mentioned in this embodiment is the same as the radial direction corresponding to the forming device 500. That is, the hot edge driving assembly 200 drives the first hot edge pressing member 110 to move along the third direction, which essentially means that the first hot edge pressing member 110 moves closer to or further away from the outer peripheral surface of the forming device 500 along the radial direction of the forming device 500. The first direction is parallel to the axial direction of the forming device 500, that is, the first hot edge pressing member 110 and the second hot edge pressing member 120 extend longitudinally along the axial direction of the forming device 500, thereby forming a longitudinal hot edge extending along the conveying direction on the film.

[0052] The working principle and process of the hot-edge forming device are as follows: During continuous film conveying, the film is cylindrically wrapped around the outer peripheral surface of the forming device 500. The edge-heating drive components 200 of each edge-heating forming module 600 operate simultaneously, driving the first edge-heating hot-pressing component 110 to move radially toward the outer peripheral surface of the forming device 500. As the first edge-heating hot-pressing component 110 approaches the forming device 500, the edge-heating linkage component 300 simultaneously drives the second edge-heating hot-pressing component 120 from the separation position to the pressing position, causing the first and second edge-heating hot-pressing components 110 and 120 to clamp the film from both circumferential sides, and heat-press the film using the heat provided by the heating element 150, thereby forming an edge at a predetermined position on the film.

[0053] When maintenance is required, the hot edge driving assembly 200 drives the first hot edge pressing component 110 away from the forming device 500 in a third direction, and the hot edge linkage assembly 300 simultaneously drives the second hot edge pressing component 120 to switch from the pressing position to the separating position.

[0054] Multiple edge-sealing modules 600 are arranged in a ring around the forming unit 500, allowing them to work simultaneously as the film is conveyed axially along the forming unit 500. This creates multiple edge seams at different circumferential positions on the film, completing the longitudinal sealing edge-sealing process of the tubular film in one operation, significantly improving production efficiency. Furthermore, since each edge-sealing module 600 is relatively independent, the number and arrangement angle of the modules can be flexibly adjusted according to the actual edge-sealing position and quantity requirements, providing excellent scalability and flexibility.

[0055] Preferably, four edge-sealing forming modules 600 are provided, and the four edge-sealing forming modules 600 are evenly distributed along the circumference of the forming device 500, thereby simultaneously forming four edge-sealing strips at four equally divided positions on the circumference of the film. This is suitable for making bag types such as square bottom bags and stand-up pouches that require four longitudinally sealed edge-sealing strips. It is understood that in other embodiments, the number of edge-sealing forming modules 600 can be adaptively adjusted according to the number of edge-sealing strips required for the target bag type, for example, it can be set to two, three, six, or eight, etc. The circumferential arrangement angle of the modules can also be non-uniformly distributed according to actual process requirements, as long as edge-sealing can be performed at predetermined positions on the circumference of the film. These are all equivalent embodiments of the present invention.

[0056] Through the aforementioned structural design, this edge-pressing device enables each module to synchronously complete the action of approaching the forming device 500 and pressing the edge together within a limited space using a single power source. The overall structure is compact and suitable for working conditions with limited internal space in vertical packaging machines. At the same time, each module can independently adjust its elastic pressure, allowing for differentiated settings for edge-pressing processes of different bag types and film materials, further enhancing the device's versatility and process adaptability.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. 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.

[0058] 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.

Claims

1. A hot-edge forming module, characterized in that, include: The hot-pressing edge assembly includes a first hot-pressing edge member and a second hot-pressing edge member extending along a first direction. The first hot-pressing edge member and the second hot-pressing edge member are disposed opposite each other in a second direction, and a guide structure and an elastic structure are provided between them. The guide structure is used to guide the second hot-pressing edge member to slide back and forth relative to the first hot-pressing edge member in the second direction, so that the second hot-pressing edge member has a pressing position close to the first hot-pressing edge member and a separating position away from the first hot-pressing edge member. The elastic structure is used to provide elastic pressure to drive the second hot-pressing edge member to move from the separating position toward the pressing position, and the magnitude of the elastic pressure is adjustable. The edge-heating drive assembly is connected to the first edge-heating hot press component for driving the first edge-heating hot press component to reciprocate along a third direction; The edge-heating linkage assembly includes a first linkage structure and a second linkage structure. The first linkage structure is fixed on the mounting base, and the second linkage structure is fixed on the second edge-heating hot press. The second linkage structure is linked and cooperates with the first linkage structure to drive the second edge-heating hot press to switch between the pressing position and the separating position when the first edge-heating hot press moves reciprocally along the third direction. Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

2. The edge-forming module according to claim 1, characterized in that: The first linkage structure includes at least one first linkage member, the first linkage member having a linkage guide portion that is inclined relative to both the second direction and the third direction. The second linkage structure includes at least one second linkage member, the second linkage member being slidably engaged with the linkage guide portion.

3. The edge-forming module according to claim 2, characterized in that: The linkage guide is an inclined guide edge, the second linkage component is a roller, the axis of the roller extends along the first direction, and the roller rolls in cooperation with the inclined guide edge.

4. The edge-forming module according to claim 2, characterized in that: The first linkage component is provided in multiple ways, and the multiple first linkage components are arranged at intervals along the first direction. The second linkage component is also provided in multiple ways, and the multiple second linkage components are matched one-to-one with the linkage guide parts of the multiple first linkage components.

5. The edge-forming module according to claim 1, characterized in that: The guide structure includes a first guide seat and a second guide seat. The first guide seat is fixed to the first hot-pressing component, and the second guide seat is fixed to the second hot-pressing component. The second guide seat and the first guide seat are slidably connected along the second direction. The elastic structure is connected between the first guide seat and the second guide seat.

6. The edge-forming module according to claim 5, characterized in that: The elastic structure includes an adjusting member and an elastic member. The adjusting member extends along the second direction. One end of the adjusting member is connected to the first guide seat, and the other end is provided with an adjusting block. The axial position of the adjusting block on the adjusting member is adjustable. One end of the elastic member abuts against the side of the second guide seat opposite to the first guide seat, and the other end abuts against the adjusting block.

7. The edge-heating forming module according to claim 5, characterized in that: The mounting base is a mounting base, the first hot-pressing edge component is slidably mounted on the mounting base along the third direction, the hot-pressing edge driving assembly is mounted on the mounting base, and the driving end of the hot-pressing edge driving assembly is connected to the first hot-pressing edge component in a transmission connection.

8. The hot-edge forming module according to any one of claims 1 to 7, characterized in that: Both the first hot-pressed edge component and the second hot-pressed edge component are equipped with heating elements; The first hot-pressed edge component and the second hot-pressed edge component are respectively provided with a plurality of hot-pressing rollers on their opposite sides. The plurality of hot-pressing rollers are arranged at intervals along the first direction, and the axis of each hot-pressing roller extends along the third direction.

9. A hot-edge forming device, characterized in that: It includes a forming device and a plurality of hot edge forming modules as described in any one of claims 1 to 8, wherein the plurality of hot edge forming modules are arranged in a ring at intervals around the forming device, the third direction is the same as the radial direction corresponding to the forming device, and the first direction is parallel to the axial direction of the forming device.

10. A vertical packaging machine, characterized in that, Includes the hot-edge forming device as described in claim 9.

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