A heat sealing mechanism of a cushion bag air column forming machine

Abstract

The utility model belongs to the buffering bag heat sealing technical field especially relates to a kind of heat sealing mechanism of buffering bag air column forming machine, comprising: conveying table and rack, the right side of conveying table is equipped with placing groove, the inside fixed mounting of placing groove is equipped with gas cylinder, the outlet of gas cylinder is equipped with control valve, the inside control of control valve is equipped with control rod.The utility model provides a kind of heat sealing mechanism of buffering bag air column forming machine;In the technical scheme, when heat sealing knife is driven by air cylinder and is pressed, make connecting frame drive rack synchronous down, rack and gear meshing transmission, drive control rod open control valve, make the compressed air of gas cylinder be delivered to vacuum adsorption plate by connecting gas pipe, produce instantaneous negative pressure and firmly adsorb positioning film, reach ensure that film is completely stationary in heat sealing process, eliminate the problems, such as sealing line misplacement, check valve function failure caused by film displacement, effectively improve the sealing reliability and product qualification rate of air column bag.

Description

Technical Field

[0001] This utility model belongs to the field of heat sealing technology for cushioning bags, and particularly relates to a heat sealing mechanism for a cushioning bag air column forming machine. Background Technology

[0002] Cushioning bag air columns are an innovative inflatable cushioning packaging material made of multi-layer co-extruded plastic film. Through precision heat-sealing technology, they form a series of independent, sealed air column units. When in use, simply inflate them; the air in each column is locked by a specially designed check valve, causing it to instantly expand into a highly elastic, pressure-resistant protective structure. This effectively disperses and absorbs external impacts and vibrations, providing comprehensive, close-fitting protection for the product. Manufactured using a cushioning bag air column forming machine, the process involves precisely feeding, heat-sealing, and cutting two layers of co-extruded plastic film rolls to form continuously arranged independent air column units. The heat-sealing process, using high temperature and pressure, fuses the film to form a sealing line and check valve structure.

[0003] In the existing technology, the heat sealing mechanism of the cushion bag air column forming machine is the core component that determines the product's sealing performance and yield rate. After the cushion bag air column is delivered to the relevant position, it is then composed of a precision heat sealing knife (including heating element), a high-temperature resistant silicone cushioning pad, a pressure system, and a cooling unit. The heat sealing knife is engraved with raised sealing patterns according to the design of the air column bag. When pressed down, it works in conjunction with the silicone pad to ensure that heat and pressure are evenly applied to the film, achieving a firm seal while avoiding puncture.

[0004] However, when heat-sealing the air column of the buffer bag, the air column is delivered to the relevant position and then heat-sealed by pressing down with a heat-sealing knife. However, inaccurate positioning and positioning deviation can cause the film to shift or wrinkle during the heat-sealing process, resulting in misalignment of the sealing line, structural defects such as air column channel connection failure, check valve failure, or insufficient sealing strength. This leads to air leakage after inflation, substandard pressure holding performance, and a significant decrease in product yield. At the same time, it increases raw material consumption and related costs, which is not conducive to its widespread use in practice. Utility Model Content

[0005] The purpose of this invention is to address the technical problem of unstable positioning of the air column in the buffer bag after it is delivered to the relevant position, and to provide a heat sealing mechanism for an air column forming machine for the buffer bag.

[0006] In view of this, the present invention provides a heat sealing mechanism for a cushioning bag air column forming machine, comprising: The conveyor table and rack are provided. A placement groove is provided on the right side of the conveyor table. A gas cylinder is fixedly installed inside the placement groove. A control valve is connected to the gas outlet of the gas cylinder. A control rod is installed inside the control valve. A gear is fixedly installed on the outer surface of the control rod. The outer surface of the gear meshes with the front of the rack after it is moved down. The control valve outlet is equipped with a connecting air pipe, the outlet end of the connecting air pipe is fixedly installed with a vacuum adsorption plate, and the bottom of the vacuum adsorption plate is fixedly installed with a support frame.

[0007] Furthermore, the conveyor platform is equipped with multiple sets of conveyor rollers inside.

[0008] Furthermore, a fixing frame is fixedly installed on the right side of the top of the conveyor table, and a receiving plate is fixedly installed on the upper surface of the fixing frame.

[0009] Furthermore, a cylinder is fixedly installed at the center of the upper surface of the receiving plate, and a tool holder is fixedly installed at one end of the cylinder output shaft.

[0010] Furthermore, a heat-sealing blade is provided inside the tool holder, and a thin steel sheet is fixedly installed on the left side of the heat-sealing blade, with the bottom of the thin steel sheet being higher than the bottom of the heat-sealing blade.

[0011] Furthermore, a connecting bracket is fixedly installed on the right side of the tool holder, and the bottom of the connecting bracket is fixedly installed on the top of the rack.

[0012] Furthermore, the bottom of the support frame is fixedly installed inside the conveyor table, and the vacuum adsorption plate is located below the conveyor roller.

[0013] 1. This utility model utilizes a heat-sealing knife that, when pressed down by a cylinder, causes the connecting frame to move down synchronously with the rack. The rack meshes with the gear, driving the control lever to open the control valve. This allows compressed air from the gas cylinder to be delivered to the vacuum adsorption plate via the connecting air pipe, generating an instantaneous negative pressure that firmly adsorbs and positions the film. This ensures that the film remains completely stationary during the heat-sealing process, eliminating problems such as misalignment of the sealing line and failure of the check valve caused by film displacement. This effectively improves the sealing reliability and product qualification rate of the air column bag.

[0014] 2. This utility model utilizes the height difference between the thin steel sheet on the left side of the heat-sealing blade and the blade to automatically scrape off any film that may adhere to it as the blade rises. This effectively solves the problem of film sticking to the blade, avoiding secondary pollution and production interruptions caused by film adhesion. Furthermore, when heat sealing is complete and the heat-sealing blade rises, the control valve is closed synchronously through the linkage of the rack and gear, releasing the suction force of the vacuum adsorption plate and allowing the film to be smoothly conveyed to the next work station by the conveyor roller. This achieves automatic switching between positioning and conveying functions, improving the continuity of equipment operation and production efficiency, and reducing raw material loss and maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a utility model Figure 1 A top-view structural diagram; Figure 3 This is a utility model Figure 1 A schematic diagram of the cross-sectional structure; Figure 4 This is a utility model Figure 3 A schematic diagram of the right-side view structure; Figure 5 This is a utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0016] In the diagram: 1. Conveyor table; 2. Conveyor roller; 3. Fixing frame; 4. Cylinder; 5. Tool holder; 6. Heat sealing knife; 7. Thin steel sheet; 8. Placement slot; 9. Gas cylinder; 10. Control valve; 11. Control lever; 12. Gear; 13. Connecting air pipe; 14. Support frame; 15. Vacuum adsorption plate; 16. Connecting frame; 17. Rack; 18. Receiving plate. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0018] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0019] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0021] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0022] like Figures 1 to 5 As shown, a heat-sealing mechanism for a cushioning bag air column forming machine includes: The conveyor table 1 and the rack 17 are provided. A placement groove 8 is provided on the right side of the conveyor table 1. A gas cylinder 9 is fixedly installed inside the placement groove 8. A control valve 10 is connected to the gas outlet of the gas cylinder 9. A control rod 11 is installed inside the control valve 10. A gear 12 is fixedly installed on the outer surface of the control rod 11. The outer surface of the gear 12 meshes with the front of the rack 17 after it is moved down. The control valve 10 has a connecting air pipe 13 installed at its outlet. A vacuum adsorption plate 15 is fixedly installed at the outlet end of the connecting air pipe 13. A support frame 14 is fixedly installed at the bottom of the vacuum adsorption plate 15.

[0023] This application utilizes the cooperation of the conveyor table 1 and the rack 17 to set up a gas cylinder 9 and a control valve 10 in the placement groove 8. By using the meshing transmission of the gear 12 and the rack 17, the mechanical linkage of automatically triggering vacuum adsorption when the heat sealing knife 6 is pressed down is realized. The gas cylinder 9 is connected to the vacuum adsorption plate 15 through the connecting gas pipe 13, which generates a stable adsorption force on the film during the heat sealing process, effectively preventing film displacement and ensuring accurate formation of the sealing line.

[0024] As a preferred example of this application, the conveyor table 1 is provided with multiple sets of conveyor rollers 2 inside.

[0025] This application achieves continuous and stable film conveying by setting multiple sets of conveying rollers 2 inside the conveying table 1, ensuring accurate positioning of each heat sealing station, improving production efficiency, and avoiding wrinkles or stretching deformation of the film during the conveying process.

[0026] As a preferred example of this application, a fixing frame 3 is fixedly installed on the right side of the top of the conveyor table 1, and a receiving plate 18 is fixedly installed on the upper surface of the fixing frame 3.

[0027] This application provides a stable support foundation for heat sealing through the cooperation of the fixing frame 3 and the receiving plate 18, ensuring that the components maintain a precise relative position during the heat sealing process, thereby improving the stability and reliability of the equipment operation.

[0028] As a preferred example of this application, a cylinder 4 is fixedly installed at the center of the upper surface of the receiving plate 18, and a tool holder 5 is fixedly installed at one end of the output shaft of the cylinder 4.

[0029] This application achieves precise control of the pressing and lifting of the heat sealing knife 6 by using a cylinder 4 to drive the tool holder 5, ensuring the uniformity and stability of the heat sealing pressure and improving the consistency of the heat sealing quality.

[0030] As a preferred example of this application, a heat-sealing knife 6 is provided inside the tool holder 5, and a thin steel sheet 7 is fixedly installed on the left side of the heat-sealing knife 6, with the bottom of the thin steel sheet 7 being higher than the bottom of the heat-sealing knife 6.

[0031] This application solves the problem of film sticking to the blade by setting a thin steel sheet 7 on the left side of the heat sealing blade 6, with its bottom higher than the bottom of the heat sealing blade 6. When the heat sealing blade 6 is lifted, the adhesive film can be effectively scraped off, thus avoiding production interruptions and quality defects caused by film adhesion.

[0032] As a preferred example of this application, a connecting bracket 16 is fixedly installed on the right side of the tool holder 5, and the bottom of the connecting bracket 16 is fixedly installed on the top of the rack 17.

[0033] This application connects the tool holder 5 and the rack 17 through the connecting bracket 16, realizing the mechanical linkage between the movement of the heat sealing knife 6 and the vacuum adsorption control, ensuring the precise synchronization of the two actions, and improving the system's response speed and reliability.

[0034] As a preferred example of this application, the bottom of the support frame 14 is fixedly installed inside the conveyor table 1, and the vacuum adsorption plate 15 is located below the conveyor roller 2.

[0035] This application achieves a perfect combination of positioning and conveying functions by fixing the support frame 14 inside the conveying table 1 and setting the vacuum adsorption plate 15 below the conveying roller 2, which not only ensures the effective transmission of adsorption force but also avoids interference with the film conveying process.

[0036] Working principle: When the film is conveyed to the heat sealing station by the conveying roller 2, the cylinder 4 drives the tool holder 5 and the heat sealing knife 6 to press down. Simultaneously, the connecting frame 16 fixed to the right side of the tool holder 5 drives the rack 17 to move down. The rack 17 drives the gear 12 meshing with it to rotate, and then the valve core of the control valve 10 is opened by the rotation of the control rod 11. After the control valve 10 is opened, the compressed air in the gas cylinder 9 enters the vacuum adsorption plate 15 through the connecting air pipe 13. The surface of the vacuum adsorption plate 15 generates a strong negative pressure, which firmly adsorbs and positions the film, effectively preventing the film from shifting or wrinkling when the heat sealing knife 6 is pressed down. Under the stable adsorption state of the film, the heat sealing knife 6 completes the heat sealing operation of the film. After heat sealing is completed, cylinder 4 drives the heat sealing blade 6 to rise, and the thin steel sheet 7 fixed to its left side rises accordingly. Utilizing the height difference between the steel sheet 7 and the heat sealing blade 6, any film that may adhere to the heat sealing blade 6 is automatically scraped off. Simultaneously, as the heat sealing blade 6 rises, it drives the rack 17 to move upwards via the connecting frame 16. The gear 12 reverses, causing the control lever 11 to close the control valve 10, and the vacuum adsorption plate 15 stops working, releasing the adsorption force. The film is then conveyed to the next station by the conveyor roller 2.

[0037] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A heat-sealing mechanism for a cushioning bag air column forming machine, characterized in that, include: A conveyor (1) and a rack (17) are provided. A placement groove (8) is provided on the right side of the conveyor (1). A gas cylinder (9) is fixedly installed inside the placement groove (8). A control valve (10) is connected to the outlet of the gas cylinder (9). A control rod (11) is installed inside the control valve (10). A gear (12) is fixedly installed on the outer surface of the control rod (11). The outer surface of the gear (12) meshes with the front of the rack (17) after it is moved down. The control valve (10) is provided with a connecting air pipe (13) at its outlet. A vacuum adsorption plate (15) is fixedly installed at the outlet end of the connecting air pipe (13). A support frame (14) is fixedly installed at the bottom of the vacuum adsorption plate (15).

2. The heat-sealing mechanism of the cushioning bag air column forming machine according to claim 1, characterized in that, The conveyor platform (1) is equipped with multiple sets of conveyor rollers (2).

3. The heat-sealing mechanism of the cushioning bag air column forming machine according to claim 1, characterized in that, A fixing frame (3) is fixedly installed on the right side of the top of the conveyor (1), and a receiving plate (18) is fixedly installed on the upper surface of the fixing frame (3).

4. The heat-sealing mechanism of the cushioning bag air column forming machine according to claim 3, characterized in that, A cylinder (4) is fixedly installed at the center of the upper surface of the receiving plate (18), and a tool holder (5) is fixedly installed at one end of the output shaft of the cylinder (4).

5. The heat-sealing mechanism of the cushioning bag air column forming machine according to claim 4, characterized in that, The tool holder (5) is equipped with a heat sealing knife (6), and a thin steel sheet (7) is fixedly installed on the left side of the heat sealing knife (6), with the bottom of the thin steel sheet (7) being higher than the bottom of the heat sealing knife (6).

6. The heat-sealing mechanism of the cushioning bag air column forming machine according to claim 5, characterized in that, A connecting bracket (16) is fixedly installed on the right side of the tool holder (5), and the bottom of the connecting bracket (16) is fixedly installed on the top of the rack (17).

7. The heat-sealing mechanism of the cushioning bag air column forming machine according to claim 1, characterized in that, The bottom of the support frame (14) is fixedly installed inside the conveyor table (1), and the vacuum adsorption plate (15) is located below the conveyor roller (2).

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