Film drawing structure of vertical packaging machine

Abstract

Provided is a vertical packaging machine film drawing structure. The film drawing mechanism mainly solves the problem that a packaging film is prone to wrinkling after being formed through a film drawing mechanism of an existing common packaging machine. The film drawing device is characterized in that the conveying wheel assembly comprises a first assembly which is correspondingly arranged below the heat sealing device and comprises a first wheel (31) and a second wheel (32) which are used for drawing a film; the second assembly is correspondingly arranged above the heat sealing device and comprises a third wheel (33) and a fourth wheel (34) which are used for drawing films; and the first wheel, the second wheel, the third wheel and the fourth wheel are driven by the same power source (4) to rotate. According to the film drawing structure of the vertical packaging machine, the idler wheels for drawing films are arranged on the upper portion and the lower portion of the heat sealing device, the better guiding effect is achieved, wrinkles are prevented, and operation is more stable.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery, specifically to the film-stretching structure of a vertical packaging machine. Background Technology

[0002] Existing intelligent packaging machines include a frame, on which are mounted a material feeding mechanism, a film feeding and conveying mechanism, a film bag forming mechanism, a longitudinal heat sealing mechanism, a transverse heat sealing mechanism, and a cutting mechanism. The film bag forming mechanism includes a bag former that can roll the film into a cylindrical shape. Between the longitudinal heat sealing mechanism and the transverse heat sealing mechanism is a pressure roller assembly that drives the film conveyed after longitudinal heat sealing. The pressure roller assembly includes a driving pressure roller and a driven pressure roller arranged opposite each other. The driving pressure roller and the driven pressure roller are rotatably mounted on the frame via rotating shafts. A motor is mounted at the end of the rotating shaft of the driving pressure roller away from the driving pressure roller, and meshing gears are mounted at the ends of the two rotating shafts near the pressure roller. The end of the rotating shaft of the driven pressure roller near the driven pressure roller is oscillating in a direction close to or away from the driving pressure roller. The frame is equipped with a drive assembly that can drive the rotating shafts to oscillate. The motor drives the rotating shaft of the driving pressure roller to rotate, and through the meshing of the gears on the two rotating shafts, the rotating shaft of the driven pressure roller is driven to rotate, thereby achieving synchronous rotation of the driving pressure roller and the driven pressure roller to drive the film downward.

[0003] Conventional packaging machines use a pressure roller assembly for the film stretching mechanism, which is usually located below the heat sealing mechanism. This makes the resulting packaging film prone to wrinkles. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a vertical packaging machine film pulling structure, which mainly solves the problem that the packaging film is prone to wrinkles after forming in the film pulling mechanism of ordinary packaging machines.

[0005] The technical solution of this utility model is as follows:

[0006] A vertical packaging machine with a film-stretching structure includes a machine body, on which a heat-sealing device and a conveyor wheel assembly are mounted. The conveyor wheel assembly includes...

[0007] The first component, correspondingly located below the heat sealing device, includes a first wheel and a second wheel for pulling the film;

[0008] The second component, correspondingly located above the heat sealing device, includes a third wheel and a fourth wheel for pulling the film;

[0009] The first, second, third, and fourth wheels are driven to rotate by the same power source.

[0010] It also includes a first shaft and a third shaft, with the first wheel disposed on the first shaft and the third wheel mounted on the third shaft. The first shaft is also provided with a first synchronous pulley, and the third shaft is provided with a second synchronous pulley. The first synchronous pulley and the second synchronous pulley are connected by a synchronous belt.

[0011] The power source includes an output shaft, on which a drive tooth is provided, and on the first shaft a transmission tooth that meshes with the drive tooth.

[0012] The machine body is provided with a mounting plate, and the tail end of the first shaft is provided with a bearing seat, which is detachably connected to the mounting plate.

[0013] The mounting plate is provided with a long groove, and the bearing seat is connected to the long groove by fasteners.

[0014] The long groove is either a cross-shaped long groove or a straight long groove.

[0015] The power source is a stepper motor or a servo motor.

[0016] The beneficial effects of this utility model are: This utility model provides a film-pulling structure for a vertical packaging machine, with rollers for film pulling set both above and below the heat-sealing device, which plays a better guiding role and prevents wrinkles. Attached Figure Description

[0017] Figure 1 This is a perspective view of the first embodiment of the present utility model.

[0018] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0019] Figure 3 This is a partial perspective view of the first embodiment of the present invention.

[0020] Figure 4 This is a partial perspective view of the first embodiment of the present invention. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The vertical packaging machine film-pulling structure includes a machine body 1, on which a heat-sealing device 2 and a conveyor wheel assembly 3 are provided. The conveyor wheel assembly includes a first assembly located below the heat-sealing device, comprising a first wheel 31 and a second wheel 32 for film pulling; and a second assembly located above the heat-sealing device, comprising a third wheel 33 and a fourth wheel 34 for film pulling. The first, second, third, and fourth wheels are driven to rotate by the same power source 4. Driving four wheels with a single power source results in better synchronization and performance. The motor can drive any one of the wheels. The first and second wheels can be connected via gear transmission. For details, please refer to Chinese Patent Publication No. CN 214566620 U. This application also includes pressure roller structures above and below the heat-sealing device, providing better guidance and preventing wrinkles. The motor can be installed in various positions as needed, and the synchronous pulley and synchronous belt can be installed on any shaft.

[0022] In this embodiment, as shown in the figure, it includes a first shaft 311 and a third shaft 331. The first wheel is disposed on the first shaft, and the third wheel is mounted on the third shaft. The first shaft also has a first synchronous pulley 312, and the third shaft has a second synchronous pulley 332. The first and second synchronous pulleys are connected by a synchronous belt 333. Torque is transmitted through the cooperation of the synchronous pulleys and the synchronous belt, resulting in high synchronization and good performance.

[0023] In this embodiment, as shown in the figure, the power source includes an output shaft with a drive gear on it, and a transmission gear 313 on the first shaft that meshes with the drive gear. This gear transmission provides greater stability.

[0024] In this embodiment, as shown in the figure, the machine body is provided with a mounting plate 11, and the tail end of the first shaft is provided with a bearing seat 314, which is detachably connected to the mounting plate. Installation can be performed using screws and nuts.

[0025] In this embodiment, as shown in the figure, the mounting plate is provided with a long groove 111, and the bearing seat is connected to the long groove by fasteners. Specifically, bolts can be passed through the long groove and then fixed with nuts, allowing adjustment of the shaft's installation position, and thus the wheel's position.

[0026] In this embodiment, as shown in the figure, the long groove is a cross-shaped long groove or a straight long groove.

[0027] In this embodiment, as shown in the figure, the power source is a stepper motor or a servo motor.

[0028] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A vertical packaging machine film-stretching structure, comprising a machine body (1), wherein the machine body is provided with a heat-sealing device (2) and a conveyor wheel assembly (3), characterized in that: The conveyor wheel assembly includes The first component is located below the heat sealing device and includes a first wheel (31) and a second wheel (32) for pulling the film. The second component is disposed above the heat sealing device and includes a third wheel (33) and a fourth wheel (34) for pulling the film. The first, second, third and fourth wheels are driven to rotate by the same power source (4).

2. The vertical packaging machine film-stretching structure according to claim 1, characterized in that: It also includes a first shaft (311) and a third shaft (331), the first wheel is disposed on the first shaft, the third wheel is mounted on the third shaft, the first shaft is also provided with a first synchronous wheel (312), the third shaft is provided with a second synchronous wheel (332), and the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt (333).

3. The vertical packaging machine film-stretching structure according to claim 2, characterized in that: The power source includes an output shaft, on which a drive tooth is provided, and on the first shaft a transmission tooth (313) that meshes with the drive tooth.

4. The vertical packaging machine film-stretching structure according to claim 3, characterized in that: The machine body is provided with a mounting plate (11), and the tail end of the first shaft is provided with a bearing seat (314), which is detachably connected to the mounting plate.

5. The vertical packaging machine film-stretching structure according to claim 4, characterized in that: The mounting plate is provided with a long groove (111), and the bearing seat is connected to the long groove by fasteners.

6. The vertical packaging machine film-stretching structure according to claim 5, characterized in that: The long groove is either a cross-shaped long groove or a straight long groove.

7. The vertical packaging machine film stretching structure according to any one of claims 1-6, characterized in that: The power source is a stepper motor or a servo motor.

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