Cold film packaging machine

Abstract

The utility model relates to the technical field of packaging, in particular to a cold film packaging machine which comprises a first film feeding device, a second film feeding device, a film pressing device, a film cutting device and a conveying device, the conveying device is provided with a feeding port, an upper cold film is arranged on the first film feeding device, a lower cold film is arranged on the second film feeding device, and the film pressing device and the film cutting device are arranged on the conveying device. The first film feeding device is located above the conveying device, the second film feeding device is located below the conveying device, the film pressing device is installed above the conveying device, the film cutting device is arranged beside the feeding port, and the upper cold film and the lower cold film are intersected at the feeding port and bonded with each other. The cold film packaging machine can ensure that a cold film can be tightly attached to the outer surface of goods, the cold film packaging quality is improved, and cold film loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and more specifically, to a cold film packaging machine. Background Technology

[0002] Cold film packaging is a widely used packaging technology in product packaging. Cold film is wrapped around the product's outer surface using a cold film machine and then cut and heat-sealed using a cutter. This allows the cold film to adhere to the product surface, keeping it clean. However, during the wrapping process, the cold film often fails to completely adhere to the product, resulting in bulges or looseness. This affects the quality of the cold film packaging and increases the amount of cold film used.

[0003] A Chinese patent discloses a cold film wrapping machine, including a film supply device, a film wrapping device, and a conveying device. The film wrapping device is located on the packaging film output side of the film supply device. The film wrapping device is connected to a pushing device that propels it to reciprocate between the conveying device and the film supply device. The conveying device has a clearance portion that cooperates with the film wrapping device. Heat-sealing and film-cutting devices are provided on the packaging film output side of the film supply device and between the conveying device and the film wrapping device. However, this cold film wrapping machine still cannot overcome the aforementioned problems, failing to improve the adhesion between the cold film and the product, resulting in low cold film packaging quality and high cold film wastage. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing cold film packaging technology, which results in low quality and high film loss due to non-adhesion of the cold film. This invention provides a cold film packaging machine that can ensure the cold film adheres fully to the goods to be packaged, thereby improving the quality of cold film packaging and reducing the amount of cold film loss.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A cold film packaging machine is provided, comprising a first film feeding device, a second film feeding device, a film pressing device, a film cutting device, and a conveying device. The conveying device is provided with a feeding port. An upper cold film is mounted on the first film feeding device, and a lower cold film is mounted on the second film feeding device. The first film feeding device is located above the conveying device, and the second film feeding device is located below the conveying device. The film pressing device is installed above the conveying device, and the film cutting device is located beside the feeding port. The upper cold film and the lower cold film meet at the feeding port and adhere to each other.

[0007] With this setup, when goods need packaging, they are fed into the conveying device through the loading port. As the goods pass through the loading port, a cold film formed by the connection of the upper and lower cold films covers the front of the goods. The conveying device operates, moving the goods forward and pulling out the cold film. The lower cold film covers the front and bottom of the goods, adhering tightly to the surface under the pressure of the goods' own weight, while the upper cold film covers the front and top of the goods. When the rear of the goods moves to the pressing device, the pressing device operates, pressing the film from above the conveying device. The upper and lower cold film move downwards, pressing the upper cold film against the goods and positioning them. Then, the film-cutting device moves downwards along the tail of the goods. Guided by the film-cutting device, the upper cold film is pressed down along the tail of the goods and re-intersects with the lower cold film. The film-cutting device heat-cuts the upper and lower cold films, forming a tightly wrapped cold film on the outside of the goods. After the upper and lower cold films on the cold film packaging machine adhere to each other, they separate from the cold film on the goods. The adhered upper and lower cold films are then returned to the feeding port for cold film packaging of the next item. This packaging method ensures a tight fit between the cold film and the goods, reduces air bubbles on the surface of the cold film, improves the quality of cold film packaging, and reduces the wear and tear of the cold film.

[0008] Preferably, the device further includes a frame, on which the first film feeding device, the second film feeding device, the film pressing device, the film pressing device, and the conveying device are all mounted.

[0009] Preferably, the first film feeding device includes a first film placing roller, a first film feeding mechanism, and a first tensioning mechanism. The upper cold film is wound into a roll and sleeved on the first film placing roller. The end of the upper cold film extends to the side of the feed port after passing around the first film feeding mechanism and the first tensioning mechanism.

[0010] With this setup, when goods need to be cold-wrapped, a roll of upper cold film is placed on the first film-laying roller. When the goods enter the conveying device from the feeding port, the goods pull the upper cold film, the first film-laying roller rotates, and the upper cold film is released. The first film-feeding mechanism comes into contact with the upper cold film and rotates actively to provide power for the transmission of the upper cold film. The first tensioning mechanism is used to keep the upper cold film taut during transmission to prevent the upper cold film from sagging after packaging is completed and reset.

[0011] Preferably, the first film feeding mechanism includes a film feeding roller, a belt and a first motor. The film feeding roller is rotatably mounted next to the first film placing roller. The output shaft of the first motor is connected to the film feeding roller through the belt. The upper cold film passes around the film feeding roller and abuts against the film feeding roller.

[0012] With this setup, when packaging goods, the first motor works intermittently, driving the film feeding roller to rotate. The rotation of the film feeding roller causes the cold film to be fed out, delivering the amount of cold film required to wrap a single item. The amount of cold film delivered can be controlled to ensure that the cold film remains taut, preventing it from sagging or folding. This helps improve the fit between the cold film and the goods, reduces the amount of cold film used, and improves the quality of cold film packaging.

[0013] Preferably, the first film feeding device further includes a balance detection mechanism, which is movably installed beside the first film placing roller.

[0014] With this setup, users can detect the residual amount of the upper cooling film in real time through the remaining amount detection mechanism, thereby replenishing the upper cooling film in a timely manner.

[0015] Preferably, the remaining quantity detection mechanism includes a mounting frame, a connecting rod, a detection roller, and a vision component. The mounting frame is installed above the first film-laying roller. One end of the connecting rod is rotatably connected to the mounting frame, the detection roller is rotatably connected to the other end of the connecting rod, and the vision component is fixedly installed on the mounting frame.

[0016] With this setup, when the first film-laying roller is equipped with the upper cooling film, the connecting rod hangs down under gravity. The detection roller at the end of the connecting rod abuts against the rolled upper cooling film. There is rolling friction between the detection roller and the upper cooling film. The detection roller will not obstruct the unwinding of the upper cooling film. As the upper cooling film is unwound, the thickness of the roll formed by the upper cooling film will decrease, and the height of the detection roller will gradually decrease. The vision component detects the height of the detection roller to determine the remaining amount of upper cooling film and promptly reminds the worker to replenish the upper cooling film.

[0017] Preferably, the first tensioning mechanism includes a mounting rod, a rotating rod, a tensioning roller, a baffle, and an elastic element. The mounting rod is fixedly installed on the side of the first film feeding mechanism. One end of the rotating rod is elastically connected to the mounting rod through the elastic element. The tensioning roller is installed at the other end of the rotating rod, and the axial direction of the tensioning roller is parallel to the axial direction of the first film placing roller. The baffle is used to limit the rotation range of the rotating rod.

[0018] With this setup, when goods are cold-wrapped, the goods pull out the upper cold film, and the tensioning roller is pulled by the upper cold film, causing the rotating rod to rotate along the mounting rod against the elastic force of the elastic element. The tensioning roller is displaced, and the distance between the tensioning roller and the film feeding roller is reduced, that is, the upper cold film section between the tensioning roller and the film feeding roller is reduced. The reduction amount is the same as the amount of upper cold film used to package a single item. After the film cutting device finishes cutting the film, the first film feeding mechanism works to release an appropriate amount of upper cold film. The rotating rod is reset under the elastic force of the elastic element until it stops at the baffle, waiting to package the next item. This ensures that the upper cold film is always in a taut state, preventing the upper cold film from sagging or folding, which helps improve the quality of cold film packaging.

[0019] Preferably, the second film feeding device is symmetrically arranged with the first film feeding device.

[0020] Preferably, the second film feeding device includes a second film placing roller and a second tensioning mechanism.

[0021] Preferably, the film cutting device includes a first driving mechanism, an upper film cutting mechanism, a second driving mechanism, and a lower film cutting mechanism. The first driving mechanism is installed above the conveying device, and the upper film cutting mechanism is movably connected to the first driving mechanism. The second driving mechanism is installed below the conveying device, and the lower film cutting mechanism is movably connected to the second driving mechanism. The bottom of the upper film cutting mechanism and the top of the lower film cutting mechanism can abut against each other.

[0022] With this setup, during the wrapping process, the upper and lower film cutting mechanisms are positioned above and below the moving path, respectively, without causing obstruction. After wrapping, when the upper and lower cold films need to be heat-cut, the second drive mechanism operates, bringing the top of the lower film cutting mechanism to the same height as the bottom of the goods. Then, the first drive mechanism operates, driving the upper film cutting mechanism to press down. The upper film cutting mechanism moves the upper cold film down along the rear end of the goods until the upper and lower cold films overlap at the lower film cutting mechanism. At this point, the upper and lower film cutting mechanisms also overlap, and the upper and lower cold films are heat-cut to ensure that a tightly wrapped cold film packaging is formed on the outside of the goods.

[0023] Preferably, the lower cutting film mechanism is further provided with a heating wire.

[0024] Preferably, the film pressing device includes a first displacement mechanism, a moving plate, a second displacement mechanism, and a precision positioning plate. The first displacement mechanism is installed above the conveying device, the moving plate is connected to the first displacement mechanism, and the second displacement mechanism and the precision positioning plate are both installed on the moving plate.

[0025] With this setup, when the goods arrive at the designated location, the first displacement mechanism works, driving the moving plate to move down. Then, the second displacement mechanism works, driving the precision positioning plate to press down and fit against the upper side of the goods, flattening the upper cooling film on the upper side of the goods, and ensuring that the upper cooling film fits against the goods.

[0026] Preferably, the second displacement mechanism is driven by an air pump. Air pump drive features precise control, rapid action, and high sensitivity, ensuring that the positioning plate adheres to the upper surface of the goods, effectively flattening the cold film, while also preventing excessive pressure from damaging the goods, thus improving the quality of cold film packaging.

[0027] Preferably, the conveying device is further provided with guide plates, which are respectively installed on both sides of the conveying device, and the guide plates have inclined flares on the side facing the loading port. With this arrangement, when the goods enter the conveying device, the guide plates can guide the goods to move towards the center of the conveying device through the inclined flares, thereby ensuring accurate positioning during film wrapping and improving the quality of cold film packaging.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] (1) By setting up the first film feeding device, the second film feeding device and the film pressing device, it is ensured that the cold film can be tightly attached to the outer surface of the goods, which is conducive to improving the quality of cold film packaging and reducing cold film loss.

[0030] (2) By setting the first tensioning mechanism and the second tensioning mechanism, the upper cold film and the lower cold film are kept in a tensile state during the packaging process, avoiding packaging failure due to cold film loosening, further improving the quality of cold film packaging and reducing cold film loss.

[0031] (3) By setting up the remaining amount detection mechanism, workers can accurately monitor the remaining amount of cold film in the cold film packaging machine and replenish the cold film in time to avoid the lack of film affecting the packaging process. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of a cold film packaging machine according to the present invention;

[0033] Figure 2 This is a schematic diagram of the installation structure of the upper and lower cold film of a cold film packaging machine according to the present invention;

[0034] Figure 3 This is a schematic diagram of the first film feeding device of a cold film packaging machine according to the present invention;

[0035] Figure 4 This is a schematic diagram of the internal structure of a cold film packaging machine according to the present invention;

[0036] Figure 5for Figure 4 A magnified view of a portion of the image.

[0037] The markings in the diagram are explained below:

[0038] 1. First film feeding device; 11. First film placing roller; 12. First film feeding mechanism; 121. Film feeding roller; 122. Belt; 123. First motor; 13. First tensioning mechanism; 131. Mounting rod; 132. Rotating rod; 133. Tensioning roller; 134. Baffle; 135. Elastic element; 14. Residue detection mechanism; 141. Mounting frame; 142. Connecting rod; 143. Detection roller; 144. Vision assembly; 2. Second film feeding device; 21. Second film placing roller; 22. Second tensioning mechanism; 3. Film pressing device; 31. First displacement mechanism; 32. Moving plate; 33. Second displacement mechanism; 34. Precision positioning plate; 4. Film cutting device; 41. First drive mechanism; 42. Upper film cutting mechanism; 43. Second drive mechanism; 44. Lower film cutting mechanism; 5. Conveying device; 51. Guide plate; 6. Frame; 7. Upper cooling film; 8. Lower cooling film. Detailed Implementation

[0039] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0040] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0041] Example 1

[0042] like Figures 1 to 3The first embodiment of the cold film packaging machine of this utility model is shown, including a first film feeding device 1, a second film feeding device 2, a film pressing device 3, a film cutting device 4, and a conveying device 5. The conveying device 5 is provided with a feeding port. The first film feeding device 1 is equipped with an upper cold film 7, and the second film feeding device 2 is equipped with a lower cold film 8. The first film feeding device 1 is located above the conveying device 5, and the second film feeding device 2 is located below the conveying device 5. The film pressing device 3 is installed above the conveying device 5, and the film cutting device 4 is located beside the feeding port. The upper cold film 7 and the lower cold film 8 meet at the feeding port and are adhered to each other.

[0043] With this setup, when goods need to be packaged, they are fed into the conveying device 5 through the loading port. As the goods pass through the loading port, a cold film formed by the connection of the upper cold film 7 and the lower cold film 8 covers the front of the goods. The conveying device 5 operates, moving the goods forward and pulling out the cold film. The lower cold film 8 covers the front and bottom of the goods, adhering tightly to the surface of the goods under its own weight, while the upper cold film 7 covers the front and top of the goods. When the tail of the goods moves to the pressing device 3, the pressing device 3 operates, pulling the cold film from the conveying device 5... The upper cold film 7 moves downwards, pressing down on the goods and positioning them. Then, the film-cutting device 4 operates, moving downwards along the tail of the goods. Guided by the film-cutting device 4, the upper cold film 7 is pressed down along the tail of the goods and re-intersects with the lower cold film 8. The film-cutting device 4 heat-cuts the upper and lower cold films 7 and 8, forming a tightly wrapped cold film on the outside of the goods. After the upper and lower cold films 7 and 8 on the cold film packaging machine are bonded together, they separate from the cold film on the goods. The bonded upper and lower cold films 7 and 8 are then returned to the feeding port for cold film packaging of the next goods. This packaging method ensures a tight fit between the cold film and the goods, reducing air bubbles on the surface of the cold film, improving the quality of cold film packaging, and reducing the wear and tear of the cold film.

[0044] As one embodiment of this utility model, it also includes a frame 6, on which the first film feeding device 1, the second film feeding device 2, the film pressing device 3, and the conveying device 5 are all mounted.

[0045] As one embodiment of the present invention, the first film feeding device 1 includes a first film placing roller 11, a first film feeding mechanism 12, and a first tensioning mechanism 13. The upper cold film 7 is wound into a roll and sleeved on the first film placing roller 11. The end of the upper cold film 7 passes around the first film feeding mechanism 12 and the first tensioning mechanism 13 and extends to the side of the feed port.

[0046] With this setup, when goods need to be cold-wrapped, the roll of upper cold film 7 is placed on the first film-laying roller 11. When the goods enter the conveying device 5 from the feeding port, the goods pull the upper cold film 7, the first film-laying roller 11 rotates, and the upper cold film 7 is released. The first film-feeding mechanism 12 abuts against the upper cold film 7 and rotates actively to provide power for the transmission of the upper cold film 7. The first tensioning mechanism 13 is used to keep the upper cold film 7 taut during transmission to prevent the upper cold film 7 from sagging after packaging is completed and reset.

[0047] As one embodiment of the present invention, the first film feeding mechanism 12 includes a film feeding roller 121, a belt 122 and a first motor 123. The film feeding roller 121 is rotatably mounted on the side of the first film placing roller 11. The output shaft of the first motor 123 is connected to the film feeding roller 121 through the belt 122. The upper cold film 7 passes around the film feeding roller 121 and abuts against the film feeding roller 121.

[0048] With this setup, when packaging goods, the first motor 123 operates intermittently, driving the film feeding roller 121 to rotate. The rotation of the film feeding roller 121 causes the contacting upper cooling film 7 to be fed out, feeding out the amount of upper cooling film 7 required to wrap a single item. The amount of upper cooling film 7 fed out can be controlled to ensure that the upper cooling film 7 remains taut, preventing the upper cooling film 7 from sagging or folding. This helps to improve the fit between the upper cooling film 7 and the goods, reduce the amount of upper cooling film 7 used, and improve the quality of cold film packaging.

[0049] As one embodiment of the present invention, the first film feeding device 1 further includes a surplus detection mechanism 14, which is movably installed on the side of the first film placing roller 11.

[0050] With this setup, users can detect the residual amount of the upper cooling film 7 in real time through the balance detection mechanism 14, and thus replenish the upper cooling film 7 in a timely manner.

[0051] As one embodiment of the present invention, the excess detection mechanism 14 includes a mounting frame 141, a connecting rod 142, a detection roller 143 and a vision component 144. The mounting frame 141 is mounted above the first film roller 11. One end of the connecting rod 142 is rotatably connected to the mounting frame 141, and the detection roller 143 is rotatably connected to the other end of the connecting rod 142. The vision component 144 is fixedly mounted on the mounting frame 141.

[0052] With this setup, when the first film roller 11 is equipped with the upper cooling film 7, the connecting rod 142 hangs down under the action of gravity, and the detection roller 143 at the end of the connecting rod 142 abuts against the rolled upper cooling film 7. The detection roller 143 and the upper cooling film 7 are in rolling friction, and the detection roller 143 will not obstruct the unwinding of the upper cooling film 7. As the upper cooling film 7 is unwound, the thickness of the roll formed by the upper cooling film 7 will decrease, and the height of the detection roller 143 will gradually decrease. The vision component 144 detects the height of the detection roller 143 to determine the remaining amount of upper cooling film 7 and promptly remind the worker to replenish the upper cooling film 7.

[0053] As one embodiment of this utility model, the first tensioning mechanism 13 includes a mounting rod 131, a rotating rod 132, a tensioning roller 133, a baffle 134, and an elastic element 135. The mounting rod 131 is fixedly installed on the side of the first film feeding mechanism 12. One end of the rotating rod 132 is elastically connected to the mounting rod 131 through the elastic element 135. The tensioning roller 133 is installed on the other end of the rotating rod 132, and the axial direction of the tensioning roller 133 is parallel to the axial direction of the first film placing roller 11. The baffle 134 is used to limit the rotation range of the rotating rod 132.

[0054] With this setup, when goods are cold-wrapped, the goods pull out the upper cold film 7, and the tensioning roller 133 is pulled by the upper cold film 7, causing the rotating rod 132 to rotate along the mounting rod 131 against the elastic force of the elastic element 135. The tensioning roller is displaced, and the distance between the tensioning roller and the film feeding roller 121 is reduced, that is, the section of upper cold film 7 between the tensioning roller and the film feeding roller 121 is reduced. The amount of reduction is the same as the amount of upper cold film 7 used to package a single item. After the film cutting device 4 finishes cutting the film, the first film feeding mechanism 12 works to release an appropriate amount of upper cold film 7. The rotating rod 132 is reset under the elastic force of the elastic element 135 until it is moved to the baffle 134 and stops, waiting to package the next item. This ensures that the upper cold film 7 is always in a taut state, preventing the upper cold film 7 from sagging or folding, which is beneficial to improving the quality of cold film packaging.

[0055] In one embodiment of this utility model, the second film feeding device 2 is symmetrically arranged with the first film feeding device 1.

[0056] As one embodiment of the present invention, the second film feeding device 2 includes a second film placing roller 21 and a second tensioning mechanism 22.

[0057] Example 2

[0058] like Figures 1 to 4 The following is a second embodiment of a cold film packaging machine of the present invention. This embodiment is similar to embodiment 1, except that the film cutting device 4 is further defined.

[0059] As one embodiment of the present invention, the film cutting device 4 includes a first driving mechanism 41, an upper film cutting mechanism 42, a second driving mechanism 43, and a lower film cutting mechanism 44. The first driving mechanism 41 is installed above the conveying device 5, and the upper film cutting mechanism 42 is movably connected to the first driving mechanism 41. The second driving mechanism 43 is installed below the conveying device 5, and the lower film cutting mechanism 44 is movably connected to the second driving mechanism 43. The bottom of the upper film cutting mechanism 42 and the top of the lower film cutting mechanism 44 can abut against each other.

[0060] With this setup, during the wrapping process, the upper cutting mechanism 42 and the lower cutting mechanism 44 are positioned above and below the moving path, respectively, without causing obstruction. When the wrapping is completed and the upper cold film 7 and lower cold film 8 need to be heat-cut, the second drive mechanism 43 operates, bringing the top of the lower cutting mechanism 44 to the same height as the bottom of the goods. Then, the first drive mechanism 41 operates, driving the upper cutting mechanism 42 to press down. The upper cutting mechanism 42 moves the upper cold film 7 down along the rear end of the goods until the upper cold film 7 and lower cold film 8 overlap at the lower cutting mechanism 44. At this point, the upper cutting mechanism 42 and the lower cutting mechanism 44 also overlap, and the upper cold film 7 and lower cold film 8 are heat-cut to ensure that a tightly wrapped cold film packaging is formed on the outside of the goods.

[0061] As one embodiment of this utility model, the lower cutting film mechanism 44 is also provided with a heating wire.

[0062] In one embodiment of this utility model, the conveying device 5 is further provided with guide plates 51, which are respectively installed on both sides of the conveying device 5. The guide plates 51 have inclined flares on the side facing the loading port. With this arrangement, when the goods enter the conveying device 5, the guide plates 51 can guide the goods to move towards the center of the conveying device 5 through the inclined flares, thereby ensuring accurate positioning during film wrapping and improving the quality of cold film packaging.

[0063] Example 3

[0064] like Figures 1 to 5 The following is a third embodiment of a cold film packaging machine of the present invention. This embodiment is similar to embodiment 2, except that the film pressing device 3 is further defined.

[0065] As one embodiment of the present invention, the film pressing device 3 includes a first displacement mechanism 31, a moving plate 32, a second displacement mechanism 33 and a precision positioning plate 34. The first displacement mechanism 31 is installed above the conveying device 5. The moving plate 32 is connected to the first displacement mechanism 31. The second displacement mechanism 33 and the precision positioning plate 34 are both installed on the moving plate 32.

[0066] With this setup, when the goods arrive at the designated position, the first displacement mechanism 31 works, driving the moving plate 32 to move down. Then the second displacement mechanism 33 works, driving the precision positioning plate 34 to press down and fit against the upper side of the goods, flattening the upper cooling film 7 on the upper side of the goods, ensuring that the upper cooling film 7 fits against the goods.

[0067] In one embodiment of this utility model, the second displacement mechanism 33 is driven by an air pump. The air pump drive has the characteristics of precise control, fast action and high sensitivity. It can ensure that the precision positioning plate 34 is in contact with the upper surface of the goods, so as to flatten the cold film 7, and avoid excessive pressure that will damage the goods, which is conducive to improving the quality of cold film packaging.

[0068] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cold film packaging machine characterized by, The application relates to a film feeding device, which comprises a first film feeding device (1), a second film feeding device (2), a film pressing device (3), a film cutting device (4) and a conveying device (5), wherein the conveying device (5) is provided with an upper feeding opening, the first film feeding device (1) is provided with an upper cold film (7), the second film feeding device (2) is provided with a lower cold film (8), the first film feeding device (1) is located above the conveying device (5), the second film feeding device (2) is located below the conveying device (5), the film pressing device (3) is arranged above the conveying device (5), the film cutting device (4) is arranged beside the upper feeding opening, and the upper cold film (7) and the lower cold film (8) meet at the upper feeding opening and are adhered to each other.

2. The cold form packaging machine of claim 1, wherein, The first film feeding device (1) comprises a first film placing roller (11), a first film feeding mechanism (12) and a first tensioning mechanism (13), the upper cold film (7) is wound into a roll and is sleeved on the first film placing roller (11), and the end of the upper cold film (7) extends to the side of the film pressing device (3) after passing through the first film feeding mechanism (12) and the first tensioning mechanism (13).

3. The cold form packaging machine of claim 2, wherein, The first film feeding mechanism (12) comprises a film feeding roller (121), a belt (122) and a first motor (123), the film feeding roller (121) is rotatably arranged beside the first film placing roller (11), the output shaft of the first motor (123) is connected with the film feeding roller (121) through the belt (122), and the upper cold film (7) passes through the film feeding roller (121) and abuts against the film feeding roller (121).

4. The cold form packaging machine of claim 3, wherein, The first tensioning mechanism (13) comprises a mounting rod (131), a rotating rod (132), a tensioning roller (133), a baffle (134) and an elastic element (135), the mounting rod (131) is fixedly arranged above the first film placing roller (11), one end of the rotating rod (132) is elastically connected with the mounting rod (131) through the elastic element (135), the tensioning roller (133) is arranged at the other end of the rotating rod (132), the axial direction of the tensioning roller (133) is parallel to the axial direction of the first film placing roller (11), the upper cold film (7) passes through the tensioning roller (133) and abuts against the tensioning roller (133), and the baffle (134) is used for limiting the rotating range of the rotating rod (132).

5. The cold form packaging machine of claim 3, wherein, The first film feeding device (1) further comprises a residual amount detection mechanism (14), and the residual amount detection mechanism (14) is movably arranged beside the first film placing roller (11).

6. The cold form packaging machine of claim 5, wherein, The residual amount detection mechanism (14) comprises a mounting frame (141), a connecting rod (142), a detection roller (143) and a visual assembly (144), the mounting frame (141) is arranged beside the first film placing roller (11), one end of the connecting rod (142) is rotatably connected with the mounting frame (141), the detection roller (143) is rotatably connected with the other end of the connecting rod (142), and the visual assembly (144) is fixedly arranged on the mounting frame (141).

7. The cold form packaging machine of any one of claims 1 to 6, wherein, The second film feeding device (2) is symmetrically arranged above or below the first film feeding device (1).

8. The cold form packaging machine of claim 1, wherein, Further comprising a rack (6), the first film feeding device (1), the second film feeding device (2), the film pressing device (3), the film cutting device (4) and the conveying device (5) are all arranged on the rack (6).

9. The cold form packaging machine of claim 1, wherein, The film pressing device (3) comprises a first displacement mechanism (31), a moving plate (32), a second displacement mechanism (33) and a fine positioning plate (34), the first displacement mechanism (31) is arranged above the conveying device (5), the moving plate (32) is connected with the first displacement mechanism (31), the second displacement mechanism (33) and the fine positioning plate (34) are both arranged on the moving plate (32).

10. The cold form packaging machine of claim 1, wherein, The film cutting device (4) comprises a first driving mechanism (41), an upper film cutting mechanism (42), a second driving mechanism (43) and a lower film cutting mechanism (44), the first driving mechanism (41) is arranged above the conveying device (5), the upper film cutting mechanism (42) is movably connected with the first driving mechanism (41); the second driving mechanism (43) is arranged below the conveying device (5), the lower film cutting mechanism (44) is movably connected with the second driving mechanism (43), the bottom of the upper film cutting mechanism (42) and the top of the lower film cutting mechanism (44) can abut.

Images