Film drawing device for packaging machine

Abstract

The utility model relates to a film drawing device for a packaging machine, which belongs to the technical field of packaging machines and comprises a machine body, a former arranged at the top of the machine body, a film releasing mechanism arranged on one side of the machine body and used for conveying a packaging film to the outer surface of the former, and a film drawing mechanism arranged in the machine body, the film drawing mechanism comprises two fixed plates installed in the middle of the machine body and two movable plates arranged on one sides of the two fixed plates in a sliding mode correspondingly, and two anti-skid wheels located on the two sides of the forming device are rotationally arranged on one sides of the two movable plates correspondingly. The anti-skid wheels in the film drawing mechanism rotate, the packaging film abutting against the outer surface of the forming device is pulled downwards, film drawing is carried out, the anti-skid wheels and the packaging film are not prone to slipping, the stability and continuity of film drawing can be guaranteed, the overall height of the anti-skid wheels is small, the overall height of equipment can be reduced, and use is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of packaging machine technology, specifically relating to a film-pulling device for packaging machines. Background Technology

[0002] Packaging machines are mechanical equipment capable of completing the product packaging process. They are mainly divided into assembly line-style integrated production packaging and product peripheral packaging equipment. A common type of packaging machine is the collar packaging machine. The collar packaging machine is an automated packaging device capable of weighing and packaging multiple quantities of single or multiple products. Its unique collar design makes the packaging bags more aesthetically pleasing and provides strong sealing, effectively improving production efficiency and ensuring packaging quality. It is suitable for packaging various materials such as granules and powders. For example, it can package milk powder, coffee beans, puffed foods, biscuits, rice crackers, toy fasteners, hardware parts, plastic parts, toys, food, and electrical components.

[0003] Packaging equipment such as lapel packaging machines require a film pulling device to pull the roll film to the outer surface of the forming device during packaging. The film is then conveyed downwards to the packaging area by the rotation of the belt and the contact between the belt and the packaging film. However, the belt is prone to slippage when it is aging or has insufficient tension. After slippage, the belt is difficult to convey the packaging film downwards. In addition, the belt is usually long, which increases the overall height of the equipment and makes it inconvenient to use. In view of this, this application proposes a film pulling device for packaging machines. Utility Model Content

[0004] The purpose of this invention is to provide a film-pulling device for packaging machines in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A film-pulling device for a packaging machine includes a body, a forming device mounted on the top of the body, a film-feeding mechanism mounted on one side of the body for conveying packaging film to the outer surface of the forming device, and a film-pulling mechanism mounted inside the body. The film-pulling mechanism includes two fixed plates mounted in the middle of the body and two movable plates slidably disposed on one side of the two fixed plates. Two anti-slip wheels located on both sides of the forming device are rotatably disposed on one side of each of the two movable plates. A motor for driving the anti-slip wheels to rotate is fixedly mounted on one side of each movable plate. The film-pulling mechanism is provided with a position adjustment mechanism, which includes a drive cylinder fixedly disposed on the outer wall of the fixed plate. The movable plate is fixedly connected to one end of the drive cylinder.

[0007] As a further optimization of this utility model, a film supply mechanism for supplying film into the film feeding mechanism is installed on one side of the machine body, and several casters are fixedly installed at the bottom corner of the machine body.

[0008] As a further optimization of this utility model, a longitudinal sealing mechanism for longitudinally sealing the packaging film during film stretching is installed on one side of the machine body.

[0009] As a further optimization of this utility model, the longitudinal sealing mechanism includes a connecting plate installed in the middle of the machine body, a longitudinal sealing cylinder fixed on the outer wall of the connecting plate, and a heat sealing plate installed at one end of the longitudinal sealing cylinder for longitudinally heat sealing the packaging film on the outer surface of the forming device.

[0010] As a further optimization of this utility model, a transverse sealing mechanism for transversely heat-cutting the packaging film after stretching is installed at the bottom of the longitudinal sealing mechanism.

[0011] As a further optimization of this utility model, a bag-supporting mechanism is installed at the bottom of the machine body for discharging the horizontally sealed packaging bag from the machine body.

[0012] The beneficial effects of this utility model are as follows: In this utility model, the packaging film that is in contact with the outer surface of the forming device is pulled downward by the rotation of the anti-slip wheel inside the film pulling mechanism. The anti-slip wheel and the packaging film are not prone to slippage, thus ensuring the stability and continuity of film pulling. In addition, the overall height of the anti-slip wheel is small, thereby reducing the overall height of the equipment and making it convenient to use. The position of the anti-slip wheel can be adjusted by the position adjustment mechanism, which makes it convenient for the anti-slip wheel to pull packaging films of different thicknesses and specifications, making it convenient to use. Attached Figure Description

[0013] Figure 1 This is a front view of the overall structure of this utility model;

[0014] Figure 2 This is a side view of the overall structure of this utility model;

[0015] Figure 3 This is a partial structural connection diagram of this utility model;

[0016] Figure 4 This is a utility model Figure 3 Enlarged view of the A-structure.

[0017] In the diagram: 1. Machine body; 11. Forming device; 12. Casters; 2. Film feeding mechanism; 21. Film dispensing mechanism; 3. Film pulling mechanism; 31. Fixed plate; 32. Movable plate; 33. Anti-slip wheel; 34. Motor; 35. Drive cylinder; 4. Longitudinal sealing mechanism; 41. Connecting plate; 42. Longitudinal sealing cylinder; 43. Heat sealing plate; 5. Horizontal sealing mechanism; 6. Bag holding mechanism. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Example

[0020] like Figure 1-4 As shown, a film-pulling device for a packaging machine includes a body 1, a forming device 11, a film-dispensing mechanism 21, and a film-pulling mechanism 3. The body 1 can be the shell part of an existing lapel packaging machine. The forming device 11 is installed on the top of the body 1, and the main body of the forming device 11 is a hollow cylindrical tube.

[0021] like Figure 1-2 As shown, the film feeding mechanism 21 is installed on one side of the machine body 1 and is used to transport the packaging film to the outer surface of the forming device 11. A film feeding mechanism 2 is installed on one side of the machine body 1 for supplying film into the film feeding mechanism 21. Several casters 12 are fixedly installed at the bottom corner of the machine body 1. The film feeding mechanism 2 can feed the packaging film into the film feeding mechanism 21. The film feeding mechanism 21 can transport the packaging film and wrap it around the outer surface of the forming device 11, so that the packaging film is initially formed. The casters 12 rotate to facilitate pushing the device to move it and transport the device.

[0022] like Figure 1 , Figure 3 and Figure 4 As shown, the film stretching mechanism 3 is installed inside the machine body 1. The film stretching mechanism 3 includes two fixed plates 31 installed in the middle of the machine body 1 and two movable plates 32 that are slidably disposed on one side of the two fixed plates 31. Two anti-slip wheels 33 located on both sides of the forming device 11 are rotatably disposed on one side of the two movable plates 32. A motor 34 for driving the anti-slip wheels 33 to rotate is fixedly installed on one side of the movable plates 32. The film stretching mechanism 3 is provided with a position adjustment mechanism. The position adjustment mechanism includes a drive cylinder 35 fixedly disposed on the outer wall of the fixed plate 31. The movable plate 32 is fixedly connected to one end of the drive cylinder 35. The motor 34 can be of model HG-KN23J-S10. The motors 34 on the two movable plates 32 can be synchronously rotated by a motion controller. The synchronous rotation of two or more conventional motors is a public technology and will not be described in detail here.

[0023] During use, the drive cylinder 35 can be controlled to extend and retract, which can drive the movable plate 32, anti-slip wheels 33 and motor 34 to move as a whole. After the two anti-slip wheels 33 approach each other, they will press against the packaging film on the outer surface of the forming device 11. Driven by the motor 34, the anti-slip wheels 33 can rotate. After the two anti-slip wheels 33 rotate, they can pull the packaging film pressed against the outer surface of the forming device 11 downward to stretch the film. The anti-slip wheels 33 and the packaging film are not easy to slip, thus ensuring the stability and continuity of film stretching.

[0024] like Figure 1 and Figure 3 As shown, a longitudinal sealing mechanism 4 is installed on one side of the machine body 1 for longitudinally sealing the packaging film during film stretching. The longitudinal sealing mechanism 4 includes a connecting plate 41 installed in the middle of the machine body 1, a longitudinal sealing cylinder 42 fixed on the outer wall of the connecting plate 41, and a heat sealing plate 43 installed at one end of the longitudinal sealing cylinder 42 for longitudinally heat sealing the packaging film on the outer surface of the forming device 11. The connecting plate 41 can connect the machine body 1 and the longitudinal sealing cylinder 42. After the longitudinal sealing cylinder 42 extends and retracts, it can drive the heat sealing plate 43 to move. After the heat sealing plate 43 moves, it can longitudinally seal the packaging film during film stretching.

[0025] like Figure 1 and Figure 3 As shown, the bottom of the longitudinal sealing mechanism 4 is equipped with a transverse sealing mechanism 5 for transverse heat cutting of the packaging film after stretching. The transverse sealing mechanism 5 has a built-in transverse sealing cylinder and a heat cutting component installed at one end of the transverse sealing cylinder. The heat cutting component can be moved by the extension and retraction of the transverse sealing cylinder in the transverse sealing mechanism 5. After moving, the heat cutting component can perform transverse heat cutting and sealing of the packaging film after stretching. The models of the driving cylinder 35, the longitudinal sealing cylinder 42 and the transverse sealing cylinder can all be ACQ25X100SB.

[0026] like Figure 1 As shown, the bottom of the machine body 1 is equipped with a bag-holding mechanism 6 for discharging the horizontally sealed packaging bag from the machine body 1. The bag-holding mechanism 6 can discharge the horizontally sealed packaging bag from the machine body 1 for material discharge. The forming device 11, film feeding mechanism 2, film dispensing mechanism 21, heat sealing plate 43 inside the longitudinal sealing mechanism 4, horizontal sealing mechanism 5 and bag-holding mechanism 6 are all common structures in existing collar packaging machines. Their specific internal structure and principle have been disclosed and will not be described in detail here.

[0027] It should be noted that, in use, the material is first fed into the forming device 11 from the top opening of the forming device 11. At the same time, the film feeding mechanism 2 feeds the packaging film into the film feeding mechanism 21. The film feeding mechanism 21 can transport and wrap the packaging film on the outer surface of the forming device 11, so that the packaging film is initially formed. Then, by controlling the extension and retraction of the drive cylinder 35, the movable plate 32, the anti-slip wheel 33 and the motor 34 can be moved as a whole. After the two anti-slip wheels 33 approach each other, they will press against the packaging film on the outer surface of the forming device 11. The motor 34 can drive the anti-slip wheels 33 to rotate. After the two anti-slip wheels 33 rotate, they can pull the packaging film that is pressed against the outer surface of the forming device 11 downward to perform film pulling.

[0028] During film stretching, the heat sealing plate 43 will longitudinally seal the packaging film, and the transverse sealing mechanism 5 will transversely heat-cut and seal the stretched packaging film to form a packaging bag. At this time, the forming device 11 can fill and send the material into the packaging bag at the bottom for packaging. After packaging, the packaging bag that has been heat-cut will fall into the bottom bag holding mechanism 6 and be discharged from the machine body 1 through the bag holding mechanism 6 to discharge the material, thereby completing the overall packaging process of the material.

[0029] Because the anti-slip roller 33 does not easily slip with the packaging film, it can ensure the stability and continuity of film pulling. In addition, the overall height of the anti-slip roller 33 is small, which can reduce the overall height of the equipment and make it easy to use. The position of the anti-slip roller 33 can be adjusted by the position adjustment mechanism, which makes it easy for the anti-slip roller 33 to pull packaging films of different thicknesses and specifications, making it convenient to use.

[0030] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A film-pulling device for a packaging machine, comprising a body (1), a forming device (11) mounted on the top of the body (1), a film-feeding mechanism (21) mounted on one side of the body (1) for conveying packaging film to the outer surface of the forming device (11), and a film-pulling mechanism (3) mounted inside the body (1), characterized in that: The film stretching mechanism (3) includes two fixed plates (31) installed in the middle of the machine body (1), two movable plates (32) respectively slidably disposed on one side of the two fixed plates (31), and two anti-slip wheels (33) respectively rotatably disposed on one side of the two movable plates (32) located on both sides of the forming device (11); A motor (34) for driving the anti-slip wheel (33) to rotate is fixedly installed on one side of the movable plate (32). The film pulling mechanism (3) is provided with a position adjustment mechanism. The position adjustment mechanism includes a drive cylinder (35) fixedly installed on the outer wall of the fixed plate (31). The movable plate (32) is fixedly connected to one end of the drive cylinder (35).

2. The film-pulling device for a packaging machine according to claim 1, characterized in that: A film supply mechanism (2) for supplying film to the film feeding mechanism (21) is installed on one side of the machine body (1), and several casters (12) are fixedly installed at the bottom corner of the machine body (1).

3. The film-pulling device for a packaging machine according to claim 1, characterized in that: The machine body (1) is equipped with a longitudinal sealing mechanism (4) on one side for longitudinally sealing the packaging film during film pulling.

4. A film-pulling device for a packaging machine according to claim 3, characterized in that: The longitudinal sealing mechanism (4) includes a connecting plate (41) installed in the middle of the machine body (1), a longitudinal sealing cylinder (42) fixed on the outer wall of the connecting plate (41), and a heat sealing plate (43) installed at one end of the longitudinal sealing cylinder (42) for longitudinally heat sealing the packaging film on the outer surface of the forming device (11).

5. A film-pulling device for a packaging machine according to claim 4, characterized in that: The bottom of the longitudinal sealing mechanism (4) is equipped with a transverse sealing mechanism (5) for transverse heat cutting of the packaging film after stretching.

6. A film-pulling device for a packaging machine according to claim 5, characterized in that: The bottom of the machine body (1) is equipped with a bag-holding mechanism (6) for discharging the horizontally sealed packaging bag from the machine body (1).

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