An automatic film sealer and method of sealing film

Abstract

The present application relates to biological detection film sealing packaging technical field, specifically to a kind of automatic film sealing machine and film sealing method.A kind of automatic film sealing machine, the film sealing machine includes: installation box, horizontal movement module and vertical movement module, moving platform, compression roller module, automatic feeding module and cutter module, the compression roller module further includes inductive rod, proximity sensor and hinged plate;The hinged plate is two, compression roller wheel is rotatably connected between two hinged plates, the inside of two hinged plates is respectively hinged and arranged on two side plates by hinged shaft, inductive rod is arranged on the inside of the lower side of two hinged plates, and a hinged plate is provided with touch lever, and touch lever is matched with proximity sensor arrangement.This automatic film sealing machine sets up inductive device on compression roller module, can accurately detect the in-place condition of reagent box, ensures the accuracy of film sealing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of biological detection film sealing packaging, and particularly relates to an automatic film sealing machine and a film sealing method. BACKGROUND

[0002] A kit is a container loaded with biochemical detection reagents, which is used for online detection in clinical. In order to protect the product and facilitate transportation, the reagents are concentrated in the well plate, and the whole is packaged by sealing the film. At present, in the flow process of medical diagnosis or laboratory reagents, in order to protect the product and facilitate storage and transportation, the plastic container sealing packaging mode is often used, and the sealing quality of the kit can directly affect the performance index of the kit.

[0003] Chinese invention patent application (publication number: CN111137503A, publication date: 2020-05-12) discloses a kind of full-automatic film sealing machine, including automatic feed module, automatic cutting module, left and right movement module and lifting module, the automatic feed module is fixedly connected in the upper end of lifting module, the automatic cutting module is connected on the front wall upper side of lifting module and extends to the inside of lifting module, the automatic feed module realizes the automatic feed of film material, after film material is in place, lifting module sends material to sealing film working condition position, seals film to material, after sealing film, automatic cutting module cuts film material, material, finished product is moved by left and right movement module, by the cooperation between automatic feed module, automatic cutting module, left and right movement module and lifting module, it can realize the drive of material into, the effect of automatic packaging and cutting sealing film, after cutting, it can output the packaging finished product, reduce the use of manual, improve packaging efficiency, and make that sealing film after reagent box product sealing quality is balanced.

[0004] Chinese utility model patent (publication number: CN215827021U, publication date: 2022-02-15) discloses a kind of PCR plate full-automatic film sealing machine, including: box, automatic feed mechanism, horizontal movement mechanism, automatic cutting mechanism and lifting mechanism, automatic feed mechanism is fixedly installed in the top surface of box, lifting groove is set in the side of box, horizontal movement mechanism passes through lifting groove and is fixedly installed in the power output end of lifting mechanism, lifting mechanism is fixedly installed in the bottom of box, automatic cutting mechanism is fixedly installed in the bottom surface of automatic feed mechanism, sealing film is wound on the surface of automatic feed mechanism, reagent box is installed on the surface of horizontal movement mechanism and displaces horizontally with horizontal movement mechanism, horizontal movement mechanism is lifted with lifting mechanism, the sealing film wound on the surface of automatic feed mechanism is in contact with reagent box and sealed.

[0005] When the above two automatic film sealing machines directly seal the reagent box, the reagent box cannot be detected to be in place when it is lifted to the sealing position by the left and right movement module and the lifting module. Therefore, the packaging film cannot be accurately covered on the reagent box when sealing, which may result in unsuccessful sealing. SUMMARY

[0006] In order to solve the above technical problems, the purpose of the present application provides an automatic film sealing machine, which is provided with an induction device on the compression roller module, can accurately detect the positioning of the test kit, and ensures the accuracy of film sealing.

[0007] For the purpose of the present application, the following technical solutions are adopted to achieve it:

[0008] An automatic film sealing machine, the film sealing machine comprises:

[0009] A mounting box, a mounting space is arranged in the mounting box;

[0010] A horizontal moving module and a vertical moving module, the horizontal moving module and the vertical moving module are connected with each other and arranged in the mounting space, and are used for realizing horizontal movement and vertical movement;

[0011] A moving platform, the moving platform is arranged at the moving end of the horizontal moving module and is used for carrying the sealed object;

[0012] A compression roller module, comprising a compression roller, used for realizing film sealing of the sealed object;

[0013] An automatic feeding module, used for realizing automatic feeding of the packaging film;

[0014] A cutter module, the cutter module realizes cutting of the packaging film after film sealing;

[0015] The compression roller module further comprises an induction rod, a proximity sensor and a hinged plate; the hinged plate is two pieces, the compression roller is rotatably connected between the two hinged plates, the inner sides of the two hinged plates are respectively hingedly arranged on the two side plates through hinged shafts, the induction rod is arranged on the inner side of the lower side of the two hinged plates, one of the hinged plates is provided with a trigger rod, and the trigger rod is arranged in cooperation with the proximity sensor.

[0016] The sealed object of the present application can be applied to all automatic or manual control film sealing processes of microwell plates, PCR plates, other plates or box systems conforming to the SBS standard. It is suitable for sealing and storing heat-sensitive substances, such as biochemical reagents, proteases, antibodies, PCR detection, etc. In use, the sealed object is fixedly placed on the moving platform, the moving platform moves to the induction rod together with the horizontal moving module and the vertical moving module, the front end of the sealed object abuts against the induction rod, the whole compression roller module is pushed to swing upward, the trigger rod triggers the proximity sensor to give a positioning signal, and the compression roller performs film sealing operation on the sealed object.

[0017] The structure can adopt a circular-section induction rod, but the circular-section induction rod will cause abutment disengagement when the sealed object is in place, resulting in detection failure. Preferably, the induction rod is two, and the two induction rods are arranged side by side in front of and behind the two hinged plates with a gap between the two induction rods; or the induction rod is in an elliptical or track shape with a length-width ratio of 1.5:1-3:1.

[0018] Preferably, the mounting box comprises a bottom plate, side plates and a top plate, a mounting space is formed between the bottom plate, the side plates and the top plate, the proximity sensor is mounted on the outside of the side plate, a guide groove is formed on the side plate, and the touch rod is located in the guide groove; the bottom of the guide groove corresponds to the proximity sensor, and the touch rod corresponds to the pressing piece of the proximity sensor.

[0019] In addition, the device needs to disassemble the mounting box when replacing the blade and performing maintenance, which is also very inconvenient. Preferably, the end of the top plate is provided with a rotating shaft, the rotating shaft is hinged on the side plate, a supporting plate is arranged between the two side plates of the mounting box, two supporting nails are arranged on the supporting plate, the supporting nails support the top plate, and a U-shaped notch is further arranged in the middle of the supporting plate. Through the above structure, the top plate can be turned up, the blade of the cutter module can be moved to the U-shaped notch, and the blade can be quickly replaced.

[0020] Preferably, the automatic feeding module comprises a driving wheel assembly, a driven wheel assembly and a tensioning wheel assembly, the driving wheel assembly and the driven wheel assembly are mounted on the upper side of the top plate, and the tensioning wheel assembly is mounted on the side of the two side plates.

[0021] Preferably, the driven wheel assembly comprises a fixed main shaft, a bearing, a rotating outer ring, a second magnetic rod, a second Hall sensor, a grommet, an end stop and a tensioning sheet metal, the fixed main shaft is fixed on the flip cover through a support, the rotating outer ring is connected with the fixed main shaft through the bearing, a gap is left between the rotating outer ring and the fixed main shaft, a plurality of uniformly distributed circular holes are formed in the side wall of the rotating outer ring, and the second magnetic rod is arranged at the bottom of the circular hole; a channel is formed in the fixed main shaft, the second Hall sensor is mounted in the channel, and the second Hall sensor corresponds to the second magnetic rod; the end stop is connected to the end of the fixed main shaft through a screw, and the grommet is arranged between the fixed main shaft and the end stop; the grommet is made of smooth and wear-resistant material.

[0022] Preferably, a notch is formed in the outer end of the fixed main shaft, the tensioning sheet metal is mounted in the notch through a screw, the tensioning sheet metal is in a folded shape, the two ends protrude from the cylindrical surface of the fixed main shaft, one end of the tensioning sheet metal is provided with an inclined surface, and the circular hole is provided with six uniformly distributed circular holes; the end stop is provided with a spring, the spring is pressed to press the fixed main shaft, and the fixed main shaft is limited in position.

[0023] As preferred, the cutter module comprises a horizontal plate, a stepping motor, two synchronous wheels, a synchronous belt, a cutter, a moving block, a blocking column, a first Hall sensor and a first magnetic bar; the horizontal plate is horizontally fixed on the installation box, and the stepping motor is installed on the horizontal plate; the two synchronous wheels are provided, one of which is installed on the rotating shaft of the stepping motor, and the other is hinged at the other end of the horizontal plate, and the synchronous belt is wound around the two synchronous wheels; the moving block is movably connected to the horizontal plate through a slide rail, and a section of the synchronous belt is fixed to the moving block; the cutter is installed on the moving block, the blocking column is fixed on the horizontal plate, and the moving block is provided with a buffer pad on each side, one of which corresponds to the blocking column, and the other corresponds to the side plate of the installation box; the first Hall sensor is installed on the horizontal plate, and two first Hall sensors are provided on the two ends of the horizontal plate, and the first magnetic bar is installed on the moving block and corresponds to the position of the first Hall sensor.

[0024] As preferred, the cutter module further comprises a photoelectric sensor, which is installed on the side plate of the installation box and located outside the side plate, and detects whether the cutter is present or not.

[0025] Further, the application also discloses an automatic film sealing machine method, which adopts the device and sequentially comprises the following steps:

[0026] S1, positioning the sealed object: placing the full sealed object on the moving platform, lifting the sealed object to the inductive rod under the action of the horizontal moving module and the vertical moving module, and acquiring the height position of the sealed object by the proximity sensor;

[0027] S2, sealing: moving the horizontal moving module to the compression roller, cooperating the driving wheel assembly with the film, and giving upward pressure by the vertical moving module, so that the compression roller rolls back and forth to compress the front end edge of the sealed object before and after the sealing starting position, seals the front end edge of the sealed object tightly, and the horizontal moving module continues to move to seal the whole sealed object;

[0028] S3, cutting: after the sealing is completed, the cutter module moves to cut the packaging film;

[0029] S4, discharging: moving the moving platform to the discharging position by the horizontal moving module and the vertical moving module to wait for discharging.

[0030] The automatic film sealing machine has the following advantages by adopting the above technical scheme:

[0031] 1. Two circular shafts arranged side by side are adopted, which can ensure accurate pressing on the hole plate during height detection, has greater adaptability when there is an error in the position of the hole plate, is not easy to cause poor contact and slipping problems, and makes the height detection more stable and accurate;

[0032] 2. The cutter is arranged at the outer end of the side plate, reducing the influence of the cutter structure on the sealing film walking, and the sealing film walking is more stable and reliable, the cutter moves back and forth and is detected by the Hall sensor, which is more accurate than the direct hard collision mode, the impact on the motor is small, and the service life is improved;

[0033] 3. The flip cover design is adopted, the opening and maintenance are facilitated, the efficiency is improved, the U-shaped notch is arranged on the support plate, the disassembly steps are reduced, and the tool is convenient for disassembling and replacing the cutter;

[0034] 4. The Hall sensor is adopted to detect the rotation of the rotating outer ring, so that whether the sealing film is used up is obtained, the automatic stop function is realized after use, the operator is fed back to replace, and the intelligence is higher. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 、 Figure 2 It is a structural schematic diagram of the application.

[0036] Figure 3 It is a cover plate opening structure schematic diagram of the application.

[0037] Figure 4 It is a structure schematic diagram of the compression roller module of the application.

[0038] Figure 5 It is an explosion structure schematic diagram of the cutter module of the application.

[0039] Figure 6 It is a cross-sectional structure schematic diagram of the driven wheel assembly of the application.

[0040] Figure 7 It is a structure schematic diagram of the driven wheel assembly of the application.

[0041] Figure 8 It is a winding film mode schematic diagram of the application. DETAILED DESCRIPTION

[0042] The specific embodiment of the application will be described in detail below in combination with the drawings.

[0043] As Figure 1 、 Figure 2The automatic film sealing machine comprises a mounting box 1, a moving platform 2, a horizontal moving module, a vertical moving module, a compression roller module 3, an automatic feeding module 4, a cutter module 5 and a scanning module 9. The mounting box 1 comprises a bottom plate, side plates and a top plate, and a mounting space is formed between the bottom plate, the side plates and the top plate. The vertical moving module is installed in the mounting space, and the horizontal moving module is installed at the moving end of the vertical moving module. The moving platform 2 is arranged at the moving end of the horizontal moving module. The automatic feeding module 4 realizes automatic feeding of the packaging film. The compression roller module 3 realizes film sealing of the reagent box. The cutter module 5 realizes cutting of the packaging film after film sealing. The cutter module 5 is located behind the compression roller module 3. Figure 3 As shown in the figure, the end of the top plate is provided with a rotating shaft 61, the rotating shaft 61 is hinged on the side plate, a supporting plate 11 is arranged between the two side plates of the mounting box 1, two supporting nails 12 are arranged on the supporting plate 11, the supporting nails 12 support the top plate, and a U-shaped notch is further arranged in the middle of the supporting plate 11.

[0044] As shown in the figure, Figure 4 The compression roller module 3 comprises a sensing rod 31, a compression roller 32, a proximity sensor 33 and a hinged plate 34. The compression roller 32 is rotatably connected between the two hinged plates 34. The inner sides of the two hinged plates 34 are hingedly arranged on the two side plates through hinged shafts 35. The sensing rod 31 is arranged on the inner sides of the two hinged plates 34. The sensing rod 31 is provided with a touch rod 36. The proximity sensor 33 is arranged on the outer side of the side plate and is provided with a guide groove. The touch rod 36 is located in the guide groove. The proximity sensor 33 corresponds to the bottom of the guide groove, and the touch rod 36 is pressed against the pressing plate of the proximity sensor 33.

[0045] As shown in the figure, Figure 3 The end of the top plate is provided with a rotating shaft 61, the rotating shaft 61 is hinged on the side plate, a supporting plate 11 is arranged between the two side plates of the mounting box 1, two supporting nails 12 are arranged on the supporting plate 11, the supporting nails 12 support the top plate, and a U-shaped notch is further arranged in the middle of the supporting plate 11.

[0046] As shown in the figure, Figure 5As shown, the cutter module 5 comprises a horizontal plate 51, a stepping motor 52, two synchronous wheels 53, a synchronous belt 54, a cutter 55, a moving block 56, a blocking column 57, a first Hall sensor 58 and a first magnetic bar 59; the horizontal plate 51 is horizontally fixed on the installation box 1, and the stepping motor 52 is installed on the horizontal plate 51; the two synchronous wheels 53 are provided, one of which is installed on the rotating shaft of the stepping motor 52, and the other is hinged at the other end of the horizontal plate 51, and the synchronous belt 54 is wound around the two synchronous wheels 53; the moving block 56 is movably connected to the horizontal plate 51 through a slide rail, and a section of the synchronous belt 54 is fixed to the moving block 56; the cutter 55 is installed on the moving block 56, the blocking column 57 is fixed on the horizontal plate 51, and the moving block 56 is provided with a buffer pad on each side, one of which corresponds to the blocking column 57, and the other corresponds to the side plate of the installation box 1; the first Hall sensor 58 is installed on the horizontal plate 51, and two first Hall sensors 58 are provided on the two ends of the horizontal plate 51, respectively; the first magnetic bar 59 is installed on the moving block 56, and the position of the first magnetic bar 59 corresponds to that of the first Hall sensor 58. The cutter module 5 further comprises an optical sensor, which is installed on the side plate of the installation box 1 and located outside the side plate, and corresponds to the position of the cutter 55 to detect whether the cutter 55 is present.

[0047] When the cutter module 5 works, the stepping motor 52 drives the synchronous wheels 53 to rotate, so that the moving block 56 moves back and forth along the horizontal plate 51, and the cutter 55 cuts the sealing film and resets back and forth. The limit position of the cutter 55 is detected by the first Hall sensor 58 and the first magnetic bar 59.

[0048] As shown in the drawings, Figure 6 and 7As shown, the automatic feeding module 4 includes a driving wheel assembly 7, a driven wheel assembly 8 and a tensioning wheel assembly, the driving wheel assembly 7 and the driven wheel assembly 8 are installed on the top plate upper side, and the tensioning wheel assembly is installed on the side of the two side plates. The driving wheel assembly 7 includes a driving motor and a rotating drum, the driving motor is installed on the cover 6 through a connecting piece, the driving motor is located in the interior of the rotating drum, and the rotating drum is connected with the output shaft of the driving motor. The driven wheel assembly 8 includes a fixed main shaft 81, a bearing 82, a rotating outer ring 83, a second magnetic bar 84, a second Hall sensor 85, a grommet 86, an end stop 87 and a tensioning metal plate 88, the fixed main shaft 81 is fixed on the cover 6 through a support 80, the rotating outer ring 83 is connected with the fixed main shaft 81 through the bearing 82, a gap is left between the rotating outer ring 83 and the fixed main shaft 81, a plurality of uniformly distributed circular holes 841 are formed in the side wall of the rotating outer ring 83, and the second magnetic bar 84 is arranged at the bottom of the circular hole 841; the circular hole 841 is provided with six uniformly distributed circular holes; a passage is formed in the fixed main shaft 81, the second Hall sensor 85 is installed in the passage, and the second Hall sensor 85 corresponds to the second magnetic bar 84; the end stop 87 is connected with the end of the fixed main shaft 81 through screws, and the grommet 86 is arranged between the fixed main shaft 81 and the end stop 87; a spring is arranged in the end stop 87, the spring is pressed to press the fixed main shaft 81 tightly and limit the position; the grommet 86 is made of smooth wear-resistant material; a notch is formed in the outer end of the fixed main shaft 81, and the tensioning metal plate 88 is installed in the notch through screws, the tensioning metal plate 88 is of a folded shape, the two end portions protrude from the cylindrical surface of the fixed main shaft 81, one end of the tensioning metal plate 88 is provided with an inclined surface, and the material cylinder is conveniently loaded.

[0049] When the driven wheel assembly 8 works, the sealing film is sleeved on the rotating outer ring 83, when the whole sealing film is used, the fixed main shaft 81 and the rotating outer ring 83 rotate relative to each other, and the second Hall sensor 85 is used for detection, and when the second Hall sensor 85 does not detect a signal, it can be known that the sealing film of the driven wheel assembly 8 is wound and used up.

[0050] The sealing film method of the automatic sealing film machine is sequentially performed through the following steps:

[0051] S1, the sealed object is positioned: the full sealed object is placed on the moving platform 2, and the sealed object is lifted to the sensing rod 31 under the action of the horizontal moving module and the vertical moving module, and the height position of the sealed object is obtained by the proximity sensor 33;

[0052] S2, the sealing film is sealed: the horizontal moving module moves forward to the compression roller 32, the driving wheel assembly 7 cooperates with the film pulling, the vertical moving module gives upward pressure, the compression roller 32 rolls back and forth to compress the front end edge of the sealed object before and after the sealing film starting position, the front end edge of the sealed object is sealed tightly, and the horizontal moving module continues to move to seal the whole sealed object.

[0053] S3 cutting: after the film is sealed, the cutting die module 5 moves to cut the packaging film;

[0054] S4 blanking: the horizontal moving module and the vertical moving module move the moving platform 2 to the blanking position to wait for blanking.

[0055] The above is the description of the embodiments of the present application. Through the above description of the disclosed embodiments, those skilled in the art can implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic film sealing machine, comprising: a mounting box (1) in which a mounting space is provided; a horizontal moving module and a vertical moving module which are connected to each other, provided in the mounting space, and used for horizontal and vertical movement; a moving platform (2) provided at a moving end of the horizontal moving module and used for carrying an object to be sealed; a compression roller module (3) comprising a compression roller (32) and used for sealing the object to be sealed; an automatic feeding module (4) used for automatic feeding of a packaging film; a cutter module (5) used for cutting the packaging film after sealing; characterized in that the compression roller module (3) further comprises a sensing rod (31), a proximity sensor (33) and two hinged plates (34), the compression roller (32) is rotatably connected between the two hinged plates (34), the inner sides of the upper parts of the two hinged plates (34) are respectively hingedly provided on two side plates through hinged shafts (35), the sensing rod (31) is provided on the inner sides of the lower sides of the two hinged plates (34), one of the hinged plates (34) is provided with a triggering rod (36) which is arranged in cooperation with the proximity sensor (33); the two sensing rods (31) are arranged side by side in front of and behind the two hinged plates (34) and leave a gap between them; or the sensing rod (31) has an elliptical or track-shaped cross section with a length-width ratio of 1.5:1-3:1; the mounting box (1) comprises a bottom plate, side plates and a top plate, the mounting space is formed between the bottom plate, the side plates and the top plate, the proximity sensor (33) is installed on the outer side of the side plate, a guide groove is formed in the side plate, the triggering rod (36) is located in the guide groove, the bottom of the guide groove corresponds to the proximity sensor (33), and the triggering rod (36) corresponds to the pressing piece of the proximity sensor (33).

2. An automatic film sealer according to claim 1, wherein an end of the top plate is provided with a rotating shaft (61) which is hingedly connected to the side plate, a support plate (11) is arranged between the two side plates of the mounting box (1), two support nails (12) are arranged on the support plate (11) and support the top plate, and a U-shaped notch is further arranged in the middle of the support plate (11).

3. The automatic film sealer according to claim 1, wherein, the automatic feeding module (4) comprises a driving wheel assembly (7), a driven wheel assembly (8) and a tensioning wheel assembly, the driving wheel assembly (7) and the driven wheel assembly (8) are installed on the upper side of the top plate, and the tensioning wheel assembly is installed on the side of the two side plates.

4. An automatic film sealer according to claim 3, wherein The driven wheel assembly (8) comprises a fixed main shaft (81), a bearing (82), a rotating outer ring (83), a second magnetic bar (84), a second Hall sensor (85), a gasket ring (86), an end stop (87) and a tensioning sheet metal (88). The fixed main shaft (81) is fixed on the flip cover (6) through a support (80). The rotating outer ring (83) is connected with the fixed main shaft (81) through the bearing (82). A gap is left between the rotating outer ring (83) and the fixed main shaft (81). Uniformly distributed circular holes (841) are formed in the side wall of the rotating outer ring (83), and the second magnetic bar (84) is arranged at the bottom of the circular hole (841). A channel is formed in the fixed main shaft (81), and the second Hall sensor (85) is installed in the channel. The second Hall sensor (85) corresponds to the second magnetic bar (84). The end stop (87) is connected to the end of the fixed main shaft (81) through a screw. The gasket ring (86) is arranged between the fixed main shaft (81) and the end stop (87). The gasket ring (86) is made of smooth and wear-resistant material.

5. An automatic film sealer according to claim 4, wherein A notch is formed in the outer end of the fixed main shaft (81), and the tensioning sheet metal (88) is installed in the notch through a screw. The tensioning sheet metal (88) is in a folded shape, and the two ends protrude from the cylindrical surface of the fixed main shaft (81). One end of the tensioning sheet metal (88) is provided with an inclined surface. The circular hole (841) is provided with six uniformly distributed holes. The end stop (87) is provided with a spring, which is compressed to press the fixed main shaft (81) and limit the position.

6. The automatic film sealer according to claim 1, wherein, The cutter module (5) comprises a horizontal plate (51), a stepping motor (52), a synchronous wheel (53), a synchronous belt (54), a cutter (55), a moving block (56), a stop column (57), a first Hall sensor (58) and a first magnetic bar (59). The horizontal plate (51) is horizontally fixed on the installation box (1), and the stepping motor (52) is installed on the horizontal plate (51). Two synchronous wheels (53) are provided. One synchronous wheel (53) is installed on the rotating shaft of the stepping motor (52), and the other synchronous wheel (53) is hinged to the other end of the horizontal plate (51). The synchronous belt (54) is wound around the two synchronous wheels (53). The moving block (56) is movably connected to the horizontal plate (51) through a sliding rail. A section of the synchronous belt (54) is fixed to the moving block (56). The cutter (55) is installed on the moving block (56), the stop column (57) is fixed on the horizontal plate (51), and the moving block (56) is provided with a buffer pad on both sides. The buffer pad on one side corresponds to the stop column (57), and the buffer pad on the other side corresponds to the side plate of the installation box (1). The first Hall sensor (58) is installed on the horizontal plate (51). Two first Hall sensors (58) are arranged at the two ends of the horizontal plate (51). The first magnetic bar (59) is installed on the moving block (56), and the position of the first magnetic bar (59) corresponds to the position of the first Hall sensor (58).

7. An automatic film sealer according to claim 6, wherein The cutter module (5) further comprises a photoelectric sensor, which is installed on the side plate of the installation box (1) and located outside the side plate. The photoelectric sensor corresponds to the position of the cutter (55) and detects whether the cutter exists.

8. A method of automatic film sealing machine, the method employs an automatic film sealing machine according to any one of claims 1-7, characterized in that, The following steps are sequentially performed: S1: Positioning the sealed object: the full sealed object is placed on the moving platform (2), and the sealed object is lifted to the inductive rod (31) under the action of the horizontal moving module and the vertical moving module. The proximity sensor (33) obtains the height position of the sealed object; S2: Sealing: the horizontal moving module moves forward to the pressure roller (32), the driving wheel assembly (7) cooperates with the film pulling, the vertical moving module gives upward pressure, the pressure roller (32) rolls back and forth at the sealing starting position to re-press the front edge of the sealed object, the front edge of the sealed object is sealed tightly, and the horizontal moving module continues to move to seal the whole sealed object; S3: Cutting: after sealing, the cutter module (5) moves to cut the packaging film; S4: Discharging: the horizontal moving module and the vertical moving module move the moving platform (2) to the discharging position to wait for discharging.

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