A wrapping machine and a film supply mechanism thereof

Abstract

This invention provides a wrapping machine and its film supply mechanism. The film supply mechanism is applied to the wrapping machine, which has a wrapping space with a film inlet. The mechanism includes a film release assembly, a film tensioning assembly, a film adsorption assembly, a film cutting assembly, and a film guide assembly. These assemblies are arranged sequentially in the film supply direction from the film release assembly to the film inlet. The film adsorption assembly has multiple vacuum adsorption holes on one side. The film cutting assembly includes a cutting blade and a blade translation assembly, which is driven and connected to the cutting blade. Compared to existing technologies, the film supply mechanism of this invention uses vacuum adsorption to partially adsorb the packaging film, preventing the film from deviating during cutting, improving the cutting success rate, reducing manual intervention, and offering a simple overall structure and convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, specifically to a roll wrapping machine and its film supply mechanism. Background Technology

[0002] Mattresses need to be packaged before leaving the factory. In order to further reduce the size of the mattress and facilitate transportation, sometimes the mattress is rolled up into a long cylindrical roll. The packaged mattress not only reduces the size and facilitates transportation, but the protective layer of the packaging can also reduce the damage to the mattress during transportation.

[0003] The rolling and wrapping of mattresses is generally done using a mattress rolling and wrapping machine. During operation, the mattress is first placed into the mattress conveyor channel of the machine, and then fed into the rolling and wrapping space for rolling and packaging. As the mattress rolls, the packaging film also rolls up. Therefore, after the mattress is rolled, the packaging film wraps around it, initially restraining the mattress and preventing it from bursting open. Currently, after the mattress is rolled and the packaging film is wrapped around it, the packaging film needs to be welded and cut. However, during cutting, because the packaging film is relatively soft, it is prone to warping, and cutting may also cause the film release component to release the packaging film, often resulting in incomplete cuts. Therefore, manual assistance is needed to tighten the packaging film, or the cutting can be done manually. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies in the existing technology and to provide a wrapping machine and its film supply mechanism.

[0005] One embodiment of this utility model provides a film supply mechanism for a wrapping machine, which is applied to the wrapping machine. The wrapping machine is provided with a wrapping space, which has a film inlet and includes: a film release assembly, a film tensioning assembly, a film adsorption assembly, a film cutting assembly, and a film guide assembly.

[0006] The membrane release assembly is used to temporarily store and release the packaging film. The membrane tensioning assembly, the membrane adsorption assembly, the membrane cutting assembly, and the membrane guide plate assembly are arranged sequentially in the film supply direction from the membrane release assembly to the membrane inlet. The membrane adsorption assembly has multiple vacuum adsorption holes on one side. The membrane cutting assembly includes a cutting tool and a tool translation assembly. The tool translation assembly is driven to the cutting tool, and the cutting tool moves back and forth between the membrane adsorption assembly and the membrane guide plate assembly under the drive of the tool translation assembly.

[0007] In some optional embodiments, the membrane guide plate assembly includes a first guide plate and a second guide plate arranged opposite to each other, a membrane supply channel is formed between the first guide plate and the second guide plate, the membrane supply channel is in communication with the membrane inlet, a clearance gap is formed between the side of the first guide plate away from the membrane inlet and the membrane adsorption assembly, the cutting tool passes through the clearance gap and extends to the end of the membrane supply channel away from the membrane inlet, and the tool translation assembly is located on the side of the first guide plate away from the membrane supply channel.

[0008] In some alternative implementations, the first guide plate and the second guide plate gradually move closer to each other in the direction of the inlet.

[0009] In some alternative embodiments, the first guide plate is provided with a guide portion on the side away from the film inlet, the guide portion is located within the clearance gap, and the guide portion gradually moves away from the film supply channel in a direction away from the film inlet.

[0010] In some alternative embodiments, the film tensioning assembly includes a mounting plate, a first guide roller, and a second guide roller, the first guide roller and the second guide roller being rotatably disposed on the mounting plate in a direction close to the film adsorption assembly, and a film-passing gap being formed between the first guide roller and the second guide roller for the packaging film to pass through.

[0011] In some optional embodiments, the membrane tensioning assembly further includes a position adjustment assembly. The mounting plate is provided with an adjustment groove and an adjustment block that slides with the adjustment groove. The first guide roller is rotatably engaged with the adjustment block, and the second guide roller is rotatably engaged with the mounting plate. The position adjustment assembly is drivenly connected to the adjustment block. The adjustment block moves along the adjustment groove under the drive of the position adjustment assembly, so that the first guide roller moves closer to and further away from the second guide roller.

[0012] In some alternative embodiments, the membrane tensioning assembly further includes a third guide roller and a dust removal brush. The third guide roller is rotatably disposed on the mounting plate and located between the first guide roller and the membrane release assembly. The dust removal brush is disposed on one side of the third guide roller and extends along the axial direction of the third guide roller. A dust removal channel is formed between the third guide roller and the dust removal brush.

[0013] In some alternative embodiments, the membrane release assembly includes a mounting frame and two idlers, the two idlers being rotatably mounted on the mounting frame and arranged side by side in a horizontal direction.

[0014] In some optional embodiments, the cutting tool includes two blades and two blade clamps. The two blades are disposed between the two blade clamps, which clamp and lock the two blades. The two blades extend from both sides of the blade clamps. The tool translation assembly is driven to the blade clamps. The blade clamps move back and forth between the membrane adsorption assembly and the membrane guide plate assembly under the drive of the tool translation assembly. The blades are inclined relative to the moving direction of the blade clamps.

[0015] Another embodiment of this utility model provides a wrapping machine, including: a film supply mechanism as described above for a wrapping machine.

[0016] Compared with the prior art, the film feeding mechanism of the wrapping machine of this utility model uses vacuum adsorption to adsorb part of the packaging film, so that the packaging film will not deviate when the film cutting component cuts the packaging film, thereby improving the success rate of cutting, reducing manual intervention, and the overall structure is simple and easy to operate.

[0017] To provide a clearer understanding of this invention, the specific embodiments of this invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of a portion of the structure of a wrapping machine according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the film supply mechanism of a wrapping machine according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of the film feeding mechanism of a wrapping machine according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of a membrane adsorption assembly, a membrane cutting assembly, and a membrane guide plate assembly according to an embodiment of the present invention; Figure 5 This is an exploded view of a cutting tool according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 10. Membrane release assembly; 11. Idler roller; 12. Mounting frame; 20. Membrane tensioning assembly; 21. Mounting plate; 211. Adjustment groove; 212. Adjustment block; 22. First guide roller; 221. Membrane passage gap; 23. Second guide roller; 24. Position adjustment assembly; 25. Third guide roller; 26. Dust removal brush; 30. Membrane adsorption assembly; 31. Vacuum adsorption hole; 40. Membrane cutting assembly; 41. Cutting tool; 411. Blade; 412. Blade clamp; 413. Membrane stop block; 42. Tool translation assembly; 50. Membrane guide plate assembly; 51. First guide plate; 511. Guide section; 52. Second guide plate; 53. Membrane supply channel; 54. Clearance gap; 60. Roll-up space; 61. Membrane inlet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. In the description of the present utility model, unless otherwise stated, "a plurality of" means two or more, and "a number" means one or more. In addition, unless otherwise stated, 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 indicated technical features.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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.

[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In the description of this utility model, references to terms such as "one embodiment," "some alternative implementations," or "some optional embodiments," 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 this utility model. 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.

[0024] Please see Figures 1 to 3 One embodiment of this utility model provides a film supply mechanism for a wrapping machine, which is applied to the wrapping machine. The wrapping machine is provided with a wrapping space 60, which has a film inlet 61 and includes: a film release assembly 10, a film tensioning assembly 20, a film adsorption assembly 30, a film cutting assembly 40, and a film guide plate assembly 50.

[0025] The membrane release assembly 10 is used to temporarily store and release the packaging film. The membrane tensioning assembly 20, the membrane adsorption assembly 30, the membrane cutting assembly 40, and the membrane guide plate assembly 50 are arranged sequentially in the film supply direction from the membrane release assembly 10 to the membrane inlet 61.

[0026] The membrane adsorption assembly 30 has multiple vacuum adsorption holes 31 on one side. The membrane adsorption assembly 30 is connected to a negative pressure generating device. After the negative pressure generating device is started, a negative pressure can be formed at the vacuum adsorption holes 31, which is used to adsorb the packaging film.

[0027] The membrane cutting assembly 40 includes a cutting tool 41 and a tool translation assembly 42. The tool translation assembly 42 is driven to the cutting tool 41. The cutting tool 41 moves back and forth between the membrane adsorption assembly 30 and the membrane guide plate assembly 50 under the drive of the tool translation assembly 42.

[0028] The working principle of the film feeding mechanism of a wrapping machine according to an embodiment of the present invention is explained below: A roll containing the packaging film is installed in the film release assembly 10. The packaging film passes around the film tensioning assembly 20, then through the film adsorption assembly 30, the film cutting assembly 40, and the film guide assembly 50, finally entering the roll-up space 60 through the film inlet 61. After the mattress is rolled up and the packaging film is welded, the packaging film needs to be cut. Since the portion of the packaging film between the film cutting assembly 40 and the mattress is relatively fixed, the portion between the film cutting assembly 40 and the film release assembly 10 is movable when the film adsorption assembly 30 is not activated. During cutting, the portion may... The cutting blade 41 may move the packaging film, causing it to continue to be released from the film release component 10, which affects the cutting blade 41's ability to cut the packaging film. However, after the film adsorption component 30 is activated, the negative pressure formed at the vacuum adsorption hole 31 causes the packaging film to be adsorbed onto the film adsorption component 30. The portion of the packaging film located between the film cutting component 40 and the film release component 10 is fixed and will not move or deviate, allowing the cutting blade 41 to accurately and stably cut the packaging film under the drive of the blade translation component 42, thus improving the success rate of cutting the packaging film.

[0029] The specific structure of the tool translation assembly 42 can be selected according to actual needs. For example, the tool translation assembly 42 can be a lead screw drive assembly, a rotary motor translation drive assembly, a belt translation drive assembly, a cylinder translation drive assembly, or a linear motor translation drive assembly.

[0030] In some optional embodiments, the film guide assembly 50 includes a first guide plate 51 and a second guide plate 52 arranged opposite to each other. A film supply channel 53 is formed between the first guide plate 51 and the second guide plate 52. The film supply channel 53 communicates with the film inlet 61. A clearance gap 54 is formed between the side of the first guide plate 51 away from the film inlet 61 and the film adsorption assembly 30. The cutting blade 41 passes through the clearance gap 54 and extends to the end of the film supply channel 53 away from the film inlet 61. The blade translation assembly 42 is located on the side of the first guide plate 51 away from the film supply channel 53. After the packaging film is cut, the end of the packaging film is located at the end of the film supply channel 53 away from the film inlet 61. With the guidance of the first guide plate 51 and the second guide plate 52, the end of the packaging film can easily enter the film supply channel 53 and then enter the roll-up space 60 from the film inlet 61. In this embodiment, the film supply channel 53 extends from top to bottom, the film inlet 61 is located at the bottom of the film supply channel 53, and the cutting blade 41 is located at the top of the film supply channel 53. The film tensioning assembly 20 and the film adsorption assembly 30 are located above the cutting blade 41. This makes it convenient to use the gravity of the packaging film to make the end of the packaging film face down and align with the film supply channel 53.

[0031] In some alternative embodiments, the first guide plate 51 and the second guide plate 52 gradually move closer to each other in the direction of the film inlet 61, thereby facilitating the alignment of the end of the packaging film with the film inlet 61 and improving the accuracy and stability of the packaging film delivery.

[0032] Please see Figure 4 In some optional embodiments, a guide portion 511 is provided on the side of the first guide plate 51 away from the film inlet 61. The guide portion 511 is located within the clearance gap 54. The guide portion 511 gradually moves away from the film supply channel 53 in the direction away from the film inlet 61. Since the packaging film is relatively light and soft, the end of the packaging film may swing back and forth and enter the clearance gap 54 after being cut. The purpose of the guide portion 511 is to guide the end of the packaging film towards the film supply channel 53 when it moves downward after being conveyed, thus preventing the end of the packaging film from passing through the clearance gap 54 and moving to the side of the first guide plate 51 away from the film supply channel 53.

[0033] In some optional embodiments, the film tensioning assembly 20 includes a mounting plate 21, a first guide roller 22, and a second guide roller 23. The first guide roller 22 and the second guide roller 23 are rotatably mounted on the mounting plate 21 in a direction close to the film adsorption assembly 30. A film-passing gap 221 is formed between the first guide roller 22 and the second guide roller 23 to allow the packaging film to pass through. The packaging film sequentially passes around the first guide roller 22, through the film-passing gap 221, around the second guide roller 23, and then passes through one side of the film adsorption assembly 30. The packaging film is then tensioned by the first guide roller 22 and the second guide roller 23, thereby improving the conveying stability of the packaging film.

[0034] In some optional embodiments, the film tensioning assembly 20 further includes a position adjustment assembly 24. The mounting plate 21 is provided with an adjustment groove 211 and an adjustment block 212 that slides within the adjustment groove 211. The first guide roller 22 is rotatably engaged with the adjustment block 212, and the second guide roller 23 is rotatably engaged with the mounting plate 21. The position adjustment assembly 24 is drivenly connected to the adjustment block 212. Driven by the position adjustment assembly 24, the adjustment block 212 moves along the adjustment groove 211, causing the first guide roller 22 to move closer to and further away from the second guide roller 23. The position adjustment assembly 24 can adjust the distance between the first guide roller 22 and the second guide roller 23 by moving the adjustment block 212, thereby adjusting the tension of the packaging film.

[0035] The specific structure of the position adjustment component 24 can be selected according to the actual needs. For example, the position adjustment component 24 can be a lead screw drive component, a rotary motor translation drive component, a belt translation drive component, a cylinder translation drive component, or a linear motor translation drive component.

[0036] In some optional embodiments, the film tensioning assembly 20 further includes a third guide roller 25 and a dust removal brush 26. The third guide roller 25 is rotatably mounted on the mounting plate 21 and located between the first guide roller 22 and the film release assembly. The dust removal brush 26 is disposed on one side of the third guide roller 25 and extends along the axial direction of the third guide roller 25. A dust removal channel is formed between the third guide roller 25 and the dust removal brush 26. The packaging film passes through the dust removal channel and then wraps around the first guide roller 22. The dust removal brush 26 can remove dust from the packaging film that has passed through the dust removal channel, while the third guide roller 25 can also play a certain role in tensioning the packaging film.

[0037] In some alternative embodiments, the film release assembly 10 includes two rollers 11 and a mounting frame 12. The two rollers 11 are rotatably mounted on the mounting frame 12 and are arranged side by side in the horizontal direction. A roll of packaging film is placed on the two rollers 11 and between the two rollers 11. When the packaging film is released, the roll of packaging film rotates, and the rollers 11 also rotate. It should be noted that the conveying power of the packaging film can come from the frictional force of the idler roller 11 on the packaging film on the roll. In this case, the film release assembly 10 also includes a film drive motor, which is driven and connected to the idler roller 11, driving the idler roller 11 to rotate actively. Alternatively, the conveying power of the packaging film can come from the second guide roller 23. In this case, the film tensioning assembly 20 also includes a film drive motor, which is driven and connected to the second guide roller 23. The second guide roller 23 drives the packaging film to move through friction with the packaging film. In this case, the film release assembly 10 is passively released. As the packaging film is conveyed, the roll containing the packaging film rotates, and the frictional force between the packaging film on the roll and the idler roller 11 will drive the idler roller 11 to rotate, making the roll containing the packaging film rotate more smoothly and passively releasing the packaging film. In this embodiment, the film adsorption assembly 30, the film cutting assembly 40, and the film guide plate assembly 50 are all mounted on the mounting frame 12.

[0038] The specific structure of the cutting tool 41 can be selected according to actual needs. For example, in some optional embodiments, the cutting tool 41 includes two blades 411 and two blade clamps 412. The two blades 411 are disposed between the two blade clamps 412, and the two blade clamps 412 clamp and lock the two blades 411. The two blades 411 extend from both sides of the blade clamps 412 respectively. The tool translation assembly 42 is driven to connect with the blade clamps 412. The blade clamps 412 move back and forth between the film adsorption assembly 30 and the film guide assembly 50 under the drive of the tool translation assembly 42. The extension direction of the blade edge of the blade 411 is inclined relative to the moving direction of the blade clamps 412. When the blade clamps 412 move, they drive the blades 411 to move. Since the blade edge of the blade 411 is inclined relative to the moving direction of the blades 411, it can cut the soft packaging film better. In this embodiment, the blade clamp 412 passes through the clearance gap 54, and the blade 411 is positioned above the film supply channel 53. The cutting edge of the blade 411, which is in front of the blade 411 in its moving direction, forms an obtuse angle with the moving direction of the blade 411. In another embodiment, the two blade clamps 412 are detachably connected by several screws. In yet another embodiment, the blade clamp 412 is provided with a positioning post, and the blade 411 is provided with a positioning hole. The positioning post and the positioning hole are engaged to prevent the blade 411 from shifting position. Please refer to [link to relevant documentation]. Figure 5 In another embodiment, a film-blocking block 413 is provided at the end of the blade clamp 412. The film-blocking block 413 forms a limiting angle with the blade edge of the blade 411. When cutting the packaging film, if the side of the packaging film bends and deflects, causing the blade edge of the blade 411 to fail to break through the side of the packaging film, the side of the packaging film will move along the blade edge of the blade 411 to the film-blocking block 413 and then be restricted at the limiting angle. Since the side of the packaging film cannot continue to move at this time, it can be successfully broken through as the blade 411 moves.

[0039] The film feeding mechanism of the above-mentioned wrapping machine can be applied to the wrapping machine, which includes: the film feeding mechanism of the wrapping machine as described above.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A film feeding mechanism for a wrapping machine, applied to the wrapping machine, wherein the wrapping machine is provided with a wrapping space, the wrapping space having a film inlet, characterized in that, include: Membrane release assembly, membrane tensioning assembly, membrane adsorption assembly, membrane cutting assembly, and membrane guide plate assembly; The membrane release assembly is used to temporarily store and release the packaging film. The membrane tensioning assembly, the membrane adsorption assembly, the membrane cutting assembly, and the membrane guide plate assembly are arranged sequentially in the film supply direction from the membrane release assembly to the membrane inlet. The membrane adsorption assembly has multiple vacuum adsorption holes on one side. The membrane cutting assembly includes a cutting tool and a tool translation assembly. The tool translation assembly is driven to the cutting tool, and the cutting tool moves back and forth between the membrane adsorption assembly and the membrane guide plate assembly under the drive of the tool translation assembly.

2. The film feeding mechanism of a wrapping machine according to claim 1, characterized in that: The membrane guide plate assembly includes a first guide plate and a second guide plate arranged opposite to each other. A membrane supply channel is formed between the first guide plate and the second guide plate. The membrane supply channel communicates with the membrane inlet. A clearance gap is formed between the side of the first guide plate away from the membrane inlet and the membrane adsorption assembly. The cutting tool passes through the clearance gap and extends to the end of the membrane supply channel away from the membrane inlet. The tool translation assembly is located on the side of the first guide plate away from the membrane supply channel.

3. The film feeding mechanism of a wrapping machine according to claim 2, characterized in that: The first guide plate and the second guide plate gradually move closer to each other in the direction of the inlet.

4. The film feeding mechanism of a wrapping machine according to claim 2, characterized in that: The first guide plate has a guide portion on the side away from the film inlet, the guide portion is located within the clearance gap, and the guide portion gradually moves away from the film supply channel in the direction away from the film inlet.

5. The film feeding mechanism of a wrapping machine according to claim 1, characterized in that: The film tensioning assembly includes a mounting plate, a first guide roller, and a second guide roller. The first guide roller and the second guide roller are rotatably disposed on the mounting plate in a direction close to the film adsorption assembly, and a film-passing gap is formed between the first guide roller and the second guide roller for the packaging film to pass through.

6. The film feeding mechanism of a wrapping machine according to claim 5, characterized in that: The membrane tensioning assembly further includes a position adjustment assembly. The mounting plate is provided with an adjustment groove and an adjustment block that slides with the adjustment groove. The first guide roller is rotatably engaged with the adjustment block, and the second guide roller is rotatably engaged with the mounting plate. The position adjustment assembly is drivenly connected to the adjustment block. The adjustment block moves along the adjustment groove under the drive of the position adjustment assembly, so that the first guide roller moves closer to and further away from the second guide roller.

7. The film feeding mechanism of a wrapping machine according to claim 6, characterized in that: The membrane tensioning assembly also includes a third guide roller and a dust removal brush. The third guide roller is rotatably mounted on the mounting plate and located between the first guide roller and the membrane release assembly. The dust removal brush is disposed on one side of the third guide roller and extends along the axial direction of the third guide roller. A dust removal channel is formed between the third guide roller and the dust removal brush.

8. A film feeding mechanism for a wrapping machine according to any one of claims 1 to 7, characterized in that: The membrane release assembly includes a mounting frame and two rollers, which are rotatably mounted on the mounting frame and arranged side by side in a horizontal direction.

9. A film feeding mechanism for a wrapping machine according to any one of claims 1 to 7, characterized in that: The cutting tool includes two blades and two blade clamps. The two blades are disposed between the two blade clamps, which hold and lock the two blades. The two blades extend from both sides of the blade clamps. The tool translation assembly is driven to the blade clamps. The blade clamps move back and forth between the membrane adsorption assembly and the membrane guide plate assembly under the drive of the tool translation assembly. The blades are inclined relative to the moving direction of the blade clamps.

10. A wrapping machine, characterized in that, include: A film feeding mechanism for a wrapping machine as described in any one of claims 1 to 9.

Images