A sealing machine

Abstract

The present application relates to the field of packaging technology and discloses a sealing machine comprising a base, a film unwinding mechanism, a sealing mechanism, and a controller. The film unwinding mechanism comprises a support plate, a film unwinding disc, a film collecting disc, a film drawing roller, and a plurality of film guide rollers. The support plate is mounted on the base, the film unwinding disc and the film collecting disc are rotatably connected to a first surface, all film guide rollers are arranged on the first surface along a first direction, the film drawing roller is arranged on the first surface along the first direction, and the film drawing roller is on the same horizontal line as the closest film guide roller. The sealing mechanism is mounted on the base and located on one side of the first surface, and the sealing mechanism is located between the film drawing roller and the film guide roller, and is used to cut and seal the packaging film passing through. The controller is configured to control the unwinding of the film unwinding disc and the rewinding of the film collecting disc. The sealing machine can realize the integrated operation of automatic film unwinding, rewinding, and sealing without manual operation, thereby reducing labor intensity and improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging, in particular to a sealing machine. Background Art

[0002] In order to extend the shelf life of food and isolate it from external contamination, existing food container packaging, in addition to installing a lid, also requires aluminum foil to be sealed at the mouth of some foods with high sealing requirements (such as snack cans, medicine bottles, etc.) to isolate them from the outside air. The aluminum foil is then torn off when eating.

[0003] The existing sealing method requires manual insertion of aluminum foil, which is then heated instantly by a sealing machine, fusing the foil to the container opening to achieve a seal. However, this production method relies on manual insertion of the foil, consuming a significant amount of manpower and material resources, resulting in low production efficiency. Summary of the Invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a sealing machine that can realize automatic sealing and improve production efficiency.

[0005] An embodiment of the present application provides a sealing machine having a first direction and a second direction intersecting each other, comprising:

[0006] base;

[0007] A film unwinding mechanism, comprising a support plate, a film unwinding disk, a film receiving disk, a film drawing roller, and a plurality of film guide rollers, wherein the support plate is mounted on the base and has a first surface and a second surface opposite to each other in the first direction, the film unwinding disk and the film receiving disk are rotatably connected to the first surface, all the film guide rollers are arranged on the first surface along the first direction, and the film drawing roller is arranged on the first surface along the first direction;

[0008] a sealing mechanism, which is provided on the base and located on one side of the first surface, and the sealing mechanism is located between the film-drawing roller and the film-guide roller, and is used for cutting and sealing the packaging film passing through;

[0009] The controller is configured to: control the film pulling roller and the film receiving disk to rewind after the sealing mechanism cuts and seals the film each time, and control the film unwinding disk to unwind during the rewinding process, and control the film unwinding disk to stop unwinding and the film receiving disk to stop rewinding before the next film cutting and sealing.

[0010] In one embodiment, the sealing machine further includes a detection mechanism, which is electrically connected to the controller and is used to detect when the film-pulling roller and the film-rewinding disk are rewinding after the sealing mechanism cuts and seals the film each time, and sends a rewinding signal to the controller to control the film-unwinding disk to unwind, and before the next film cutting and sealing, sends a stop rewinding signal and a stop rewinding signal to the controller to control the film-unwinding disk to stop unwinding and the film-rewinding disk to stop rewinding.

[0011] In one embodiment, the sealing machine further comprises a detection mechanism, wherein the detection mechanism comprises:

[0012] a swing arm swingably connected to the first surface;

[0013] a film feeding detection roller, which is arranged on the first surface along the first direction, and one end of the film feeding detection roller close to the swing arm is connected to the swing arm;

[0014] a sensing unit comprising a first sensing member and a second sensing member connected to the first surface, the first sensing member and the second sensing member being respectively disposed on opposite sides of an end of the swing arm away from the film feeding detection roller and located on a swing path of the swing arm, the first sensing member being located below the second sensing member;

[0015] Wherein, the first sensing element and the second sensing element are both electrically connected to the controller. When the film-pulling roller and the film-rewinding disk are reeled after the sealing mechanism cuts and seals the film each time, the swing arm is traction-forced and swings upward and contacts the second sensing element, and the film-unwinding disk starts to unwind. When the film-unwinding disk is unwinding, and the swing arm swings downward under its own weight and contacts the first sensing element, the film-unwinding disk stops unwinding.

[0016] In one embodiment, the detection mechanism further includes a film break detection roller, which is arranged on the first surface along the first direction and above the film stretching roller, and is used to perform film break detection on the packaging film wound around it.

[0017] In one embodiment, all the film guide rollers are arranged alternately on the first surface in sequence along the second direction, and the film drawing roller and the film guide roller closest thereto are on the same horizontal line.

[0018] In one embodiment, the sealing machine further comprises a power mechanism, and the power mechanism comprises:

[0019] a first power member fixed on the second surface and electrically connected to the controller, for driving the film unwinding disk to rotate so as to unwind the required packaging film;

[0020] The second power member is fixed on the second surface and electrically connected to the controller, and is used to drive the film receiving disk and the film drawing roller to rotate synchronously to reel up the packaging film after die cutting.

[0021] In one embodiment, the sealing machine has a third direction, and the first direction, the second direction and the third direction intersect with each other;

[0022] The sealing mechanism comprises:

[0023] a lower template, which is provided on the base, the lower template is provided with a first through hole extending along the third direction, and the base is provided with a through hole extending along the third direction and corresponding to the first through hole one by one;

[0024] an upper template, which is arranged on one side of the lower template along the third direction and is connected to the lower template, a passage space for the packaging film to pass through is formed between the upper template and the lower template, and the passage space has through holes on both sides in the second direction for the packaging film to pass through; and the upper template is provided with a second through hole penetrating along the third direction, the second through hole being connected to the first through hole;

[0025] The film cutting assembly includes a connecting frame, a film cutting component and a first driving component. The connecting frame is arranged on the side of the upper template facing away from the lower template. The film cutting component is connected to the end of the connecting frame close to the upper template, and the film cutting component is opposite to the second perforation. The first driving component is electrically connected to the controller and is used to drive the connecting frame to move back and forth along the third direction to drive the film cutting component to cut the packaging film passing through the travel space.

[0026] In one embodiment, the sealing mechanism further includes a film sealing assembly, wherein the film sealing assembly includes a guide sleeve, a film sealing member and a second driving member, wherein the guide sleeve passes through the connecting frame and is arranged in the film cutting member, the film sealing member is connected to the guide sleeve at one end close to the film cutting member along the third direction, and the diameter of the film sealing member is smaller than the diameter of the film cutting member, so that under the pulling of the guide sleeve, the film sealing member can be retracted into the film cutting member, the output shaft of the second driving member is connected to the end of the guide sleeve away from the film cutting member, the output shaft of the first driving member is connected to the second driving member, and the second driving member is fixedly connected to the connecting frame, the first driving member can drive the second driving member, the connecting frame and the film cutting member to make a reciprocating motion along the third direction, and the second driving member drives the guide sleeve and the film sealing member to make a reciprocating motion relative to the film cutting member along the third direction.

[0027] In one embodiment, the film sealing assembly further comprises an end plate, which is connected to one end of the guide sleeve away from the film cutting member along the third direction, so that a closed space is formed inside the guide sleeve under the sealing of the end plate and the film sealing member, and an opening is provided on the end plate extending through the third direction, the opening being used for connecting to an external vacuum pump, and a plurality of adsorption holes are provided on the film sealing member distributed along its radial direction, and the adsorption holes are communicated with the interior of the guide sleeve.

[0028] In one embodiment, the lower template is provided with a first groove on the side away from the base along the third direction, and the first groove is connected to the first perforation. The upper template is provided with a second groove on the side facing the lower template, and the second groove is connected to the second perforation. The second groove and the first groove enclose the passage space, and the through holes for the packaging film to pass through are formed on both sides in the second direction.

[0029] In one embodiment, the sealing mechanism further comprises:

[0030] a mounting plate, which is provided on a side of the upper template facing away from the lower template, the first driving member being mounted on the mounting plate, and an output shaft of the first driving member passing through the mounting plate and connected to the second driving member;

[0031] A guide rod is provided between the mounting plate and the upper template along the third direction, and the connecting frame is slidably connected to the guide rod.

[0032] In one embodiment, a film receiving roller is further included. The film receiving roller is arranged on one side of the first surface along the first direction and is located between the film receiving disk and the film pulling roller, and is used to guide the cut packaging film to the film receiving disk.

[0033] Compared with the prior art, the above technical solutions provided by the embodiments of the present application have the following beneficial effects:

[0034] The packaging film roll is installed on the film unwinding disk, and one end of the packaging film is pulled to pass through the film guide roller, the sealing mechanism, and the film pulling roller in sequence, and then wound on the film receiving disk. When the film is started to be sealed at the mouth of the food container, the film receiving disk and the film pulling roller rotate synchronously to pull the packaging film through the sealing mechanism, and the packaging film is fused to the mouth of the food container under the action of the sealing mechanism, and the packaging film after die cutting is wound onto the winding disk, thereby realizing the integrated operation of automatic film unwinding, winding and sealing, without the need for manual operation, thereby reducing labor intensity and improving production efficiency.

[0035] In addition, after the sealing mechanism cuts and seals the film each time, the controller controls the film pulling roller and the film receiving disk to rotate synchronously to reel up the packaging film after cutting, and controls the film unwinding disk to unwind during this process. When the film is unwound to the required length and before the next film cutting and sealing, the controller controls the film unwinding disk to stop unwinding and the film receiving disk to stop rewinding, thereby realizing the linkage control of film unwinding and film receiving without manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a structural diagram of an embodiment of a sealing machine of the present application;

[0037] Figure 2 This is a structural schematic diagram of another embodiment of a sealing machine of the present application;

[0038] Figure 3 yes Figure 2 A magnified schematic diagram of point A in the middle;

[0039] Figure 4 This is a structural schematic diagram of another embodiment of a sealing machine of the present application;

[0040] Figure 5 It is a structural schematic diagram of a sealing mechanism in a sealing machine of the present application.

[0041] Numbers in the figure:

[0042] 100, packaging film; 10, base; 20, film retracting and unreeling mechanism; 21, support plate; 21a, first surface; 21b, second surface; 22, film unloading tray; 23, film collecting tray; 231, rotating shaft; 232, first limiting plate; 233, second limiting plate; 24, film guide roller; 25, film pulling roller; 26, mounting seat; 27, auxiliary roller; 28, film collecting roller; 30, sealing mechanism; 31, lower template; 32, upper template; 33, film cutting assembly; 331, connecting frame; 331a, slide plate; 331b, connecting plate; 331c, connecting rod; 332, film cutting member; 333, first driving member; 34, film sealing assembly; 341, guide sleeve; 342, film sealing member; 343. Second driving member; 344. End plate; 344a. Opening; 35. Mounting plate; 36. Guide rod; 40. Detection mechanism; 41. Swing arm; 42. Film feeding detection roller; 43. Sensing unit; 431. First sensing member; 432. Second sensing member; 44. Film break detection roller; 50. Power assembly; 51. First power member; 52. Second power member; 53. First driving wheel; 54. First driven wheel; 55. First transmission belt; 56. Second driving wheel; 57. Second driven wheel; 58. Third driven wheel; 59. Second transmission belt; 60. Traveling space; 70. Controller; 80. Through hole; Z, first direction; X, second direction; Y, third direction. DETAILED DESCRIPTION

[0043] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0044] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0045] Please refer to Figure 1 and Figure 2 The embodiment of the present application provides a sealing machine having a first direction Z and a second direction X intersecting with each other. The sealing machine includes a base 10 , a film retracting and releasing mechanism 20 , a sealing mechanism 30 and a controller 70 .

[0046] Specifically, the film unwinding and unwinding mechanism 20 includes a support plate 21, a film unwinding tray 22, a film receiving tray 23, a film drawing roller 25, and a plurality of film guide rollers 24. The support plate 21 is mounted on the base 10 and has a first surface 21a and a second surface 21b that are opposed in a first direction Z. The film unwinding tray 22 and the film receiving tray 23 are rotatably connected to one side of the first surface 21a. All film guide rollers 24 are positioned on the first surface 21a along the first direction Z, and the film drawing roller 25 is positioned on the first surface 21a along the first direction Z. The sealing mechanism 30 is mounted on the base 10 and is located on one side of the first surface 21a. The sealing mechanism 30 is positioned between the film drawing roller 25 and the film guide roller 24 and is used to cut and seal the packaging film that passes through. The controller 70 is configured to control the film pulling roller 25 and the film receiving disk 23 to rewind each time the sealing mechanism cuts and seals the film, and to control the film unwinding disk 22 to unwind during the rewinding process, and to control the film unwinding disk 22 to stop unwinding and the film receiving disk to stop rewinding before the next film cutting and sealing.

[0047] In the sealing machine of the present application, the packaging film roll is installed on the film placing disk 22, and one end of the packaging film 100 is pulled to pass through the film guide roller 24, the sealing mechanism 30, and the film pulling roller 25 in sequence, and then wound on the film receiving disk 23. When the film is started to be sealed at the mouth of the food container, the controller 70 controls the film receiving disk 23 and the film pulling roller 25 to rotate synchronously to pull the packaging film through the sealing mechanism 30, and under the action of the sealing mechanism 30, the packaging film is fused at the mouth of the food container, and the packaging film after die cutting is wound onto the winding disk, thereby realizing the integrated operation of automatic film placing, winding and sealing, without the need for manual operation, thereby reducing labor intensity and improving production efficiency.

[0048] Here, it should be noted that the first direction Z and the second direction X mentioned above are virtual reference lines for the convenience of describing the positional relationship between the components. However, for the sake of clarity, this embodiment uses the support plate 21 as a reference object, and the first direction Z refers to the width direction of the support plate 21 (refer to Figure 2 The second direction X refers to the length direction of the support plate 21 (see Figure 2 in the X direction).

[0049] For example, the film-laying disc 22 is used to automatically lay out the rolled-up packaging film, and the film-winding disc 23 is used to automatically wind up the packaging film after cutting. Both need to rotate to achieve film laying or winding. In this regard, the film-laying disc 22 and the film-winding disc 23 can adopt the same structure. For the sake of clarity, the following description will take the structure of the film-winding disc 23 as an example. The specific structure of the film-laying disc 22 can refer to the film-winding disc 23 and will not be described in detail here. Among them, the film-winding disc 23 includes a rotating shaft 231 and a first limiting plate 232 and a second limiting plate 233 mounted on the rotating shaft 231. The end of the rotating shaft 231 close to the support plate 21 is connected to the first surface 21a and extends along the first direction Z. The first limiting plate 232 and the second limiting plate 233 are parallel to each other and define a winding space for winding up the packaging film. In addition, it should be noted that during the sealing process, the packaging film needs to be transported to the sealing mechanism 30 first. After the sealing is completed, the cut packaging film is pulled to be wound up. Based on this, the film winding disk 23 and the film winding disk do not operate synchronously. They can be driven by two different power components. For details, please refer to the following embodiment.

[0050] For example, the guide rollers are used to guide the packaging film unwound from the film unwinding tray, allowing the packaging film to sequentially pass through the sealing mechanism 30 and the film-pulling roller 25, ensuring smooth transport of the packaging film to the sealing mechanism 30. In other words, the multiple guide rollers in this embodiment serve to guide the packaging film. However, to prevent film breakage or wrinkling during the pulling process, the multiple guide rollers need to be staggered along the second direction X. This ensures that the wrapped packaging film maintains a certain degree of tension, thereby ensuring smoother pulling of the packaging film. Furthermore, the "multiple" mentioned above refers to two or more guide rollers, which can be determined based on actual conditions and is not a limitation.

[0051] For example, the film-pulling roller 25 is used to pull the packaging film coming out of the sealing mechanism 30 to cooperate with the rotation of the film-collecting disk 23 to achieve the film collection. In this regard, in actual application, the film-pulling roller 25 and the film-collecting disk 23 need to maintain synchronous rotation, so that while the film-pulling roller 25 is pulling the film, the film-collecting disk 23 can also collect the film synchronously to prevent a speed difference between the two from affecting the normal film collection. Based on this, the film-pulling roller 25 and the film-collecting disk 23 can be driven by the same drive component, but are not limited to this. In addition, in this embodiment, the film-pulling roller 25 and the closest film guide roller 24 are on the same horizontal line, so that the packaging film entering the sealing machine is always level, which can avoid unevenness that affects the quality of the seal.

[0052] Please refer to Figure 2 and Figure 3 In one embodiment, the sealing machine further includes a detection mechanism 40, which is electrically connected to the controller 70 and is configured to detect when the film roller 25 and the film rewinding disk 23 rewind after each film cutting and sealing operation by the sealing mechanism 30. The detection mechanism 40 sends an unwinding signal to the controller 70 to control the film unwinding disk 22 to unwind, and sends a stop unwinding signal and a stop rewinding signal to the controller 70 before the next film cutting and sealing operation to control the film unwinding disk 22 to stop unwinding and the film rewinding disk 23 to stop rewinding. In other words, the detection mechanism 40 is configured to detect the unwinding and rewinding signals of the packaging film and transmit them to the controller 70. The controller 70 then controls the automatic unwinding and rewinding of the packaging film based on the received signals, thereby achieving linked control of the film unwinding and rewinding operations. It should be noted that the detection mechanism 40 can employ detection components commonly used in the prior art for detecting unwinding or rewinding signals, or can employ the specific structures described in the following embodiments, without limitation.

[0053] Specifically, the detection mechanism 40 includes a swing arm 41, a film feed detection roller 42, and a sensing unit 43. The swing arm 41 is swingably connected to one side of the first surface 21a. The film feed detection roller 42 is disposed on one side of the first surface 21a along the first direction Z. The end of the film feed detection roller 42 closest to the swing arm 41 is connected to the swing arm 41. The sensing unit 43 includes a first sensing element 431 and a second sensing element 432 connected to the first surface 21a. The first sensing element 431 and the second sensing element 432 are disposed on either side of the end of the swing arm 41 away from the film feed detection roller 42 and are located along the swing path of the swing arm 41. The first sensing element 431 is located below the second sensing element 432. One end of the packaging film 100 is sequentially wound around the film guide roller 24, the film feed detection roller 42, and then around the sealing mechanism 30. Among them, the first sensing element 431 and the second sensing element 432 are communicatively connected to the film unwinding disk 22, and the first sensing element 431 and the second sensing element 432 are both electrically connected to the controller 70. When the sealing mechanism 30 cuts and seals the film each time, the film pulling roller 25 and the film receiving disk 23 are reeled, the swing arm 41 swings upward by the traction force and contacts the second sensing element 432, and the film unwinding disk 22 starts to unwind; when the film unwinding disk 22 is unwinding, and the swing arm 41 swings downward under the action of its own weight and contacts the first sensing element 431, the film unwinding disk 22 stops unwinding.

[0054] After the film is unwound, the film feeding detection roller 42 is pulled by the film drawing roller 42 and the film receiving disc 23, and the film feeding detection roller 42 is swingably connected to the support plate 21 by the swing arm 41. As the packaging film is pulled, it is in a tensioned state, so that the film feeding detection roller 42 is pulled by the packaging film and swings upward until the swing arm 41 contacts the first sensing element 431, and the film unwinding disc 22 starts to be driven to unwind. At this time, the packaging film is in a relaxed state, and the film feeding detection roller 42 moves downward due to its own weight, thereby driving the swing arm 41 to swing downward until the swing arm 41 contacts the second sensing element 432, and the film unwinding disc 22 stops unwinding, thereby achieving accurate film unwinding according to the set length, without manual operation, and with a high degree of automation, which is conducive to improving production efficiency.

[0055] It should be noted that the first sensing element 431 and the second sensing element 432 may be proximity sensors, or may be transmission sensors that can sense the swing signal of the swing arm 41 in the prior art, and this is not limited.

[0056] In one embodiment, the detection mechanism 40 further includes a film break detection roller 44, which is disposed on the first surface 21a along the first direction Z and above the film drawing roller 25, and is configured to detect film breakage of the packaging film passing therethrough. Specifically, as the film drawing roller 25 and the film receiving disk 23 rotate to draw the packaging film, the packaging film passes through the film break detection roller 44, allowing the film break detection roller 44 to detect whether the packaging film is broken. If the film break detection roller 44 detects a break in the packaging film passing therethrough, the controller 70 controls the sealing machine to stop and issues an alarm signal, prompting the operator to take corrective action. This avoids the subsequent film receiving and sealing operations being unnecessary due to film breakage, thereby impacting the sealing quality.

[0057] In one embodiment, the packaging film 100 further includes a mounting seat 26 and an auxiliary roller 27. The mounting seat 26 is disposed on the first surface 21a along the first direction Z and is connected to the support plate 21. The auxiliary roller 27 and the film-drawing roller 25 are disposed side by side within the mounting seat 26. The auxiliary roller 27 is located on the side of the mounting seat 26 near the film guide roller 24, and the surface of the auxiliary roller 27 is provided with a plurality of protrusions. Thus, after the packaging film 100 is cut, it is wound around the auxiliary roller 27 and contacts the protrusions on the surface of the auxiliary roller 27, thereby removing impurities adhering to the packaging film 100 for subsequent rewinding.

[0058] Please refer to Figure 4 In one embodiment, the sealing machine further includes a power mechanism comprising a first power member 51 and a second power member 52. The first power member 51 is fixed to the second surface 21b and electrically connected to the controller 70, and is used to drive the film unwinding disk 22 to rotate to unwind the desired packaging film. The second power member 52 is fixed to the second surface 21b and electrically connected to the controller 70, and is used to drive the film unwinding disk 23 and the film drawing roller 25 to rotate synchronously to rewind the die-cut packaging film.

[0059] In actual application, the output shaft of the first power member 51 is provided with a first driving wheel 53, and the end of the rotating shaft 231 of the film placing disk 22 on the side of the second surface 21b is provided with a first driven wheel 54, and a first transmission belt 55 is provided between the first driven wheel 54 and the first driving wheel 53, so that when the first power member 51 drives the first driving wheel 53 to rotate, the first transmission belt 55 is driven to operate, and then the film placing disk 22 can be driven to rotate to realize automatic film placing; similarly, the output shaft of the second power member 52 is provided with a second driving wheel 56, and the film receiving disk 23 is rotated. A second driven wheel 57 is provided at one end of the rotating shaft 231 located on the second surface 21b side, and a third driven wheel 58 is provided at one end of the film-drawing roller 25 that passes through the support plate 21 and is located on the second surface 21b side. A second transmission belt 59 is wound around the second driving wheel 56, the second driven wheel 57, and the third driven wheel 58, so that when the second power member 52 drives the second driving wheel 56 to rotate, the second transmission belt 59 is driven to operate, thereby driving the film-drawing roller 25 and the film-collecting disk 23 to rotate synchronously, preventing a speed difference between the two and affecting normal film collection. In addition, the first power member 51 and the second power member 52 can both use servo motors, or other power components in the prior art, without limitation.

[0060] In one embodiment, the sealing machine has a third direction Y, and the first direction Z, the second direction X and the third direction Y intersect each other. The third direction Y here can be used as a reference for the support plate 21, specifically the height direction of the support plate 21 (specifically, refer to Figure 2 Y direction in ).

[0061] Please refer to Figure 5 The sealing mechanism 30 includes a lower template 31, an upper template 32, and a film cutting assembly 33. The lower template 31 is mounted on the base 10 and defines a first through-hole extending along the third direction Y. The base 10 defines through-holes extending along the third direction Y and corresponding to the first through-holes. The upper template 32 is positioned to one side of the lower template 31 along the third direction Y and is connected to the lower template 31. A passage space 60 for the packaging film to pass through is formed between the upper and lower templates 32 and 31. The passage space has through-holes 80 on both sides in the second direction for the packaging film to pass through. The upper template 32 also defines a second through-hole extending along the third direction Y, which communicates with the first through-hole. The film cutting assembly 33 includes a connecting frame 331, a film cutting component 332 and a first driving component 333. The connecting frame 331 is arranged on the side of the upper template 32 away from the lower template 31. The film cutting component 332 is connected to the end of the connecting frame 331 close to the upper template 32, and the film cutting component 332 is opposite to the second perforation. The first driving component 333 is electrically connected to the controller 70, and is used to drive the connecting frame 331 to move back and forth along the third direction Y to drive the film cutting component 332 to cut the packaging film passing through the travel space 60.

[0062] Illustratively, the mouth of the food container to be sealed is extended into the through hole so that the mouth of the food container contacts the packaging film provided in the passage space 60, and then the connecting frame 331 is driven by the first driving member 333 to approach the base 10 along the third direction Y, so as to drive the film cutting member 332 connected to the connecting frame 331 to pass through the second perforation, the first perforation and the through hole in sequence, and then cut the packaging film, so that a film of the same shape and size is attached to the mouth of the food container, thereby completing the film cutting action of the packaging film. The structure is simple and the operation is convenient, and the film can be automatically loaded without manual operation, which is conducive to improving production efficiency.

[0063] Please refer to Figure 5 In one embodiment, the sealing mechanism 30 further includes a film sealing assembly 34, which includes a guide sleeve 341, a film sealing member 342, and a second driving member 343. The guide sleeve 341 passes through the connecting frame 331 and is arranged in the film cutting member 332. The film sealing member 342 is connected to the guide sleeve 341 at one end close to the film cutting member 332 along the third direction Y. The diameter of the film sealing member 342 is smaller than that of the film cutting member 332, so that the film sealing member 342 can be stored in the film cutting member 332 under the pull of the guide sleeve 341. The output shaft of the second driving member 343 is connected to the end of the guide sleeve 341 away from the film cutting member 332, the output shaft of the first driving member 333 is connected to the second driving member 343, and the second driving member 343 is fixedly connected to the connecting frame 331. The first driving member 333 can drive the second driving member 343, the connecting frame 331 and the film cutting member 332 to move back and forth along the third direction Y, and the second driving member 343 drives the guide sleeve 341 and the film sealing member 342 to move back and forth relative to the film cutting member along the third direction Y.

[0064] In this embodiment, the end of the guide sleeve 341 close to the film cutting member 332 is connected to the film sealing member 342, and the guide sleeve 341 is passed through the connecting frame 331 and arranged in the film cutting member 332. Since the diameter of the film sealing member 342 is smaller than that of the film cutting member 332, when the second driving member 343 drives the guide sleeve 341 to move along the third direction Y, the film sealing member 342 can be stored in the film cutting member 332. In actual application, when performing the sealing operation, the second driving member 343 is first used to drive the guide sleeve 341 to move upward along the third direction Y to drive the film sealing member 342 to be retracted into the film cutting member 332. At this time, the end face of the film sealing member 342 is flush with the film cutting surface of the film cutting member 332. Then, the first driving member 333 is used to drive the connecting frame 331 to move downward along the third direction Y to drive the connecting frame 331 to continuously approach the base 10, so that the guide sleeve 341, the film sealing member 342 and the film cutting member 332 form a whole and pass through the second through-hole and the first through-hole in sequence. And through holes, and then cut the packaging film, and then stick a film of the same shape and size at the bottle mouth, and then use the second driving member 343 to drive the guide sleeve 341 to move downward along the third direction Y, so as to drive the film sealing member 342 to extend from the film cutting member 332 and press the film, so that the film is fused at the bottle mouth under the high temperature generated by the film sealing member 342, thereby completing the sealing operation of the container bottle. It is easy to operate, cleverly integrates film cutting and sealing into one, has a compact structure, a high degree of automation, and can effectively improve production efficiency.

[0065] It should be noted that since the film cutting and sealing are performed in separate steps (i.e., cutting first, then sealing), and since the film sealing member 342 extends outside the film cutting member 332 during the sealing process, the heat generated by the film sealing member 342 is not transferred to the film cutting member 332. Therefore, the film cutting member 332 in this embodiment can be made of metal, replacing the traditional method of using a ceramic cutter due to concerns about the cutter being heated by the magnetic induction coil. Furthermore, the film sealing member 342 can adopt the electromagnetic induction film sealing component commonly used for sealing in the prior art. The specific structure can be referred to in the prior art and will not be described in detail.

[0066] In one embodiment, the film sealing assembly 34 also includes an end plate 344, which is connected to one end of the guide sleeve 341 along the third direction Y away from the film cutting member 332, so that a closed space is formed inside the guide sleeve 341 under the sealing of the end plate 344 and the film sealing member 342, and an opening 344a is provided on the end plate 344 and passes through along the third direction Y, and the opening 344a is used to connect an external vacuum machine, and a plurality of adsorption holes distributed along its radial direction are provided on the film sealing member 342, and the adsorption holes are connected to the interior of the guide sleeve 341. That is, by connecting the air pipe to the opening 344a, an external vacuum pump is connected to the interior of the guide sleeve 341. When the film cutting member 332 is used to cut the packaging film, the vacuum pump creates a vacuum inside the guide sleeve 341. Since the end surface of the film sealing member 342 contacts the film, the film is adsorbed to the end surface of the film sealing member 342 under the action of the vacuum. This ensures that the film does not deviate from the bottle mouth during the sealing process of the film sealing member 342, which is conducive to improving the sealing quality. After the sealing is completed, compressed air can be blown into the interior of the guide sleeve 341 to prevent the film from being adsorbed and quickly cool the film so that it can be firmly attached to the bottle mouth.

[0067] In one embodiment, the lower template 31 is provided with a first groove on the side away from the base 10 along the third direction Y, and the first groove is connected to the first perforation. The upper template 32 is provided with a second groove on the side facing the lower template 31, and the second groove is connected to the second perforation. The second groove and the first groove enclose a passage space 60, and through holes are formed on both sides in the second direction for the packaging film to pass through.

[0068] In one embodiment, the sealing mechanism 30 further includes a mounting plate 35 and a guide rod 36. The mounting plate 35 is disposed on a side of the upper template 32 facing away from the lower template 31. A first driving member 333 is mounted on the mounting plate, and an output shaft of the first driving member 333 extends through the mounting plate and is connected to a second driving member 343. The guide rod 36 is disposed between the mounting plate 35 and the upper template 32 along a third direction Y, and the connecting frame 331 is slidably connected to the guide rod 36. Thus, when the first driving member 333 drives the connecting frame 331 to move, the connecting frame 331 can move along the extension direction of the guide rod 36, achieving precise guiding, ensuring that the film cutting member 332 and the film sealing member 342 accurately cut and seal the film, and avoiding positional deviation that could result in sealing failure.

[0069] In addition, the connecting frame 331 includes a slide 331a and a connecting plate 331b arranged opposite to each other. The slide 331a is slidably connected to the guide rod 36. The connecting plate 331b is located below the slide 331a, and a connecting rod 331c is provided between the slide 331a and the connecting plate 331b. The second driving member 343 is installed on the slide 331a, and the film cutting member 332 is connected to the surface of the connecting plate 331b away from the slide 331a, thereby fixing the film cutting member 332 to the connecting frame 331; the guide sleeve 341 passes through the connecting plate 331b and is connected to the output shaft of the second driving member 343 passing through the slide 331a. The guide sleeve 341 can slide along the Y direction relative to the connecting plate 331b.

[0070] In one embodiment, a film receiving roller 28 is further included. The film receiving roller 28 is disposed on the first surface 21a along the first direction Z and is located between the film receiving tray 23 and the film pulling roller 25. The film receiving roller 28 is used to guide the cut packaging film to the film receiving tray 23. In this way, the film receiving roller 28 can be used to guide the cut packaging film to the film receiving tray 23, allowing the film receiving tray 23 to receive the film more smoothly and preventing the packaging film from breaking during the film receiving process.

[0071] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A sealing machine having a first direction, a second direction and a third direction intersecting each other, characterized in that: include: base; A sealing mechanism is provided on the base and is used to cut and seal the packaging film passing through the packaging film; wherein the sealing mechanism comprises: a lower template, which is provided on the base, the lower template is provided with a first through hole extending along the third direction, and the base is provided with a through hole extending along the third direction and corresponding to the first through hole one by one; an upper template, which is arranged on one side of the lower template along the third direction and is connected to the lower template, a passage space for the packaging film to pass through is formed between the upper template and the lower template, and the passage space has through holes on both sides in the second direction for the packaging film to pass through; and the upper template is provided with a second through hole penetrating along the third direction, the second through hole being connected to the first through hole; a film cutting assembly comprising a connecting frame, a film cutting member, and a first driving member, wherein the connecting frame is provided on a side of the upper template facing away from the lower template, the film cutting member is connected to an end of the connecting frame close to the upper template, and the film cutting member is directly opposite to the second perforation, and the first driving member is used to drive the connecting frame to move back and forth along the third direction to drive the film cutting member to cut the packaging film passing through the passage space; The film sealing assembly comprises a guide sleeve, a film sealing member and a second driving member, the guide sleeve passes through the connecting frame and is arranged in the film cutting member, the film sealing member is connected to the guide sleeve at one end close to the film cutting member along the third direction, and the diameter of the film sealing member is smaller than the diameter of the film cutting member, so that the film sealing member can be stored in the film cutting member under the pulling of the guide sleeve, the output shaft of the second driving member is connected to the end of the guide sleeve away from the film cutting member, the output shaft of the first driving member is connected to the second driving member, and the second driving member is fixedly connected to the connecting frame, the first driving member drives the second driving member, the connecting frame and the film cutting member to make a reciprocating motion along the third direction, and the second driving member drives the guide sleeve and the film sealing member to make a reciprocating motion relative to the film cutting member along the third direction; An end plate is connected to one end of the guide sleeve away from the film cutting member along the third direction, so that a closed space is formed inside the guide sleeve under the sealing of the end plate and the film sealing member, and an opening is provided on the end plate that passes through along the third direction, and the opening is used to connect an external vacuum pump. A plurality of adsorption holes are provided on the film sealing member distributed along its radial direction, and the adsorption holes are communicated with the interior of the guide sleeve.

2. The sealing machine according to claim 1, characterized in that Also includes: A film unwinding mechanism, comprising a support plate, a film unwinding disc, a film collecting disc, a film drawing roller, and a plurality of film guide rollers, wherein the support plate is mounted on the base and has a first surface and a second surface opposite to each other in the first direction, the film unwinding disc and the film collecting disc are rotatably connected to the first surface, all the film guide rollers are arranged on the first surface along the first direction, and the film drawing roller is arranged on the first surface along the first direction; the sealing mechanism is arranged on the first surface and is located between the film drawing roller and the film guide roller; The controller comprises a first driving member and a film receiving disk, wherein the first driving member is electrically connected to the controller, and the controller is configured to: control the film pulling roller and the film receiving disk to rewind after the sealing mechanism performs film cutting and sealing each time, and control the film unwinding disk to unwind during the rewinding process, and control the film unwinding disk to stop unwinding and the film receiving disk to stop rewinding before the next film cutting and sealing.

3. The sealing machine according to claim 2, characterized in that The sealing machine also includes a detection mechanism, which is electrically connected to the controller and is used to detect when the film-pulling roller and the film-rewinding disk are rewinding after the sealing mechanism cuts and seals the film each time, and sends a rewinding signal to the controller to control the film-unwinding disk to unwind, and before the next film cutting and sealing, sends a stop rewinding signal and a stop rewinding signal to the controller to control the film-unwinding disk to stop unwinding and the film-rewinding disk to stop rewinding.

4. The sealing machine according to claim 3, characterized in that The detection mechanism includes: a swing arm swingably connected to the first surface; a film feeding detection roller, which is arranged on the first surface along the first direction, and one end of the film feeding detection roller close to the swing arm is connected to the swing arm; a sensing unit comprising a first sensing member and a second sensing member connected to the first surface, the first sensing member and the second sensing member being respectively disposed on opposite sides of an end of the swing arm away from the film feeding detection roller and located on a swing path of the swing arm, the first sensing member being located below the second sensing member; Wherein, the first sensing element and the second sensing element are both electrically connected to the controller. When the film-pulling roller and the film-rewinding disk are reeled after the sealing mechanism cuts and seals the film each time, the swing arm is traction-forced and swings upward and contacts the second sensing element, and the film-unwinding disk starts to unwind. When the film-unwinding disk is unwinding, and the swing arm swings downward under its own weight and contacts the first sensing element, the film-unwinding disk stops unwinding.

5. The sealing machine according to claim 4, characterized in that The detection mechanism further includes a film break detection roller, which is arranged on the first surface along the first direction and located above the film drawing roller, and is used to perform film break detection on the packaging film wound around it.

6. The sealing machine according to claim 2, characterized in that All the film guide rollers are arranged alternately on the first surface in sequence along the second direction, and the film drawing roller and the film guide roller closest to it are on the same horizontal line.

7. The sealing machine according to claim 2, characterized in that The sealing machine further comprises a power mechanism, which comprises: a first power member fixed on the second surface and electrically connected to the controller, for driving the film unwinding disk to rotate so as to unwind the required packaging film; The second power member is fixed on the second surface and electrically connected to the controller, and is used to drive the film receiving disk and the film drawing roller to rotate synchronously so as to reel up the packaging film after film cutting.

8. The sealing machine according to claim 1, characterized in that The lower template is provided with a first groove on the side away from the base along the third direction, and the first groove is connected to the first perforation. The upper template is provided with a second groove on the side facing the lower template, and the second groove is connected to the second perforation. The second groove and the first groove enclose the passage space, and the two sides in the second direction are formed into the through holes for the packaging film to pass through.

9. The sealing machine according to claim 1, characterized in that The sealing mechanism further comprises: a mounting plate, which is provided on a side of the upper template facing away from the lower template, the first driving member being mounted on the mounting plate, and an output shaft of the first driving member passing through the mounting plate and connected to the second driving member; A guide rod is provided between the mounting plate and the upper template along the third direction, and the connecting frame is slidably connected to the guide rod.

10. The sealing machine according to claim 2, characterized in that It also includes a film receiving roller, which is arranged on the first surface along the first direction and is located between the film receiving disk and the film pulling roller, and is used to guide the cut packaging film to the film receiving disk.

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