Automatic film cutting, filling and sealing machine and film cutting, filling and sealing method

Abstract

The present invention discloses an automatic film cutting, filling and sealing machine, comprising a conveying mechanism and a loading unit, a filling unit, a film cutting pre-installation unit, a heat sealing unit and a discharging unit arranged in sequence along the conveying direction of the conveying mechanism, wherein the loading unit is used to load empty containers and transfer them to the conveying mechanism, the conveying mechanism transfers the empty containers to the filling unit for filling, the conveying mechanism transfers the filled containers to the film cutting pre-installation unit, the film cutting pre-installation unit cuts incoming film sheets, and pre-places the cut film sheets at the opening of the container, and then transfers them to the heat sealing unit via the conveying mechanism for heat sealing the film sheets at the opening of the container, and finally transfers them to the discharging unit via the mechanism, and the discharging unit transfers the discharging materials. The present invention also discloses a film cutting, filling and sealing method. The present invention can simultaneously realize the processes of film cutting, loading, filling, sealing and discharging of containers, with a high degree of automation and improved production efficiency.

Description

Technical Field

[0001] The invention relates to the field of automatic filling, and in particular to an automatic die cutting, filling and sealing machine and a film cutting, filling and sealing method. Background Art

[0002] The filling and sealing machine is a packaging method for liquid products. It fills empty containers, such as reagent bottles and medicine bottles, with liquid and then heat-seals the mouth of the container to achieve the effect of sealed packaging. Most of the filling and sealing machines in the prior art only complete the two processes of filling and sealing, and do not involve the forming process of the diaphragm. In this way, the diaphragm must be cut according to the size of the bottle mouth, and then the formed diaphragm must be transported to the filling and sealing machine to complete the filling and sealing processes. This is inconvenient and affects production efficiency. In addition, during the movement of the diaphragm, the diaphragm and the opening of the container are prone to misalignment, resulting in inadequate sealing. Alternatively, the filling and sealing machine in the prior art first punches the diaphragm cover to form a diaphragm cover that is consistent with the shape of the container opening, and then conveys the diaphragm cover to the heat sealing mechanism. The stamped diaphragm cover is aligned with the opening of the container and heat-sealed. This method still has the problem of inaccurate alignment of the heat sealing mechanism, the diaphragm cover and the opening of the container, and the heat sealing effect is poor.

[0003] In view of this, it is necessary to develop a structure to realize automated film cutting, filling and sealing processes to improve production efficiency and production quality. Summary of the invention

[0004] The object of the present invention is to provide an automatic film cutting, filling and sealing machine and a film cutting, filling and sealing method to solve the above problems.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] An automatic film cutting, filling and sealing machine comprises a conveying mechanism and a loading unit, a filling unit, a film cutting pre-loading unit, a heat sealing unit and a discharging unit arranged in sequence along the conveying direction of the conveying mechanism. The loading unit is used for loading empty containers and conveying them to the conveying mechanism. The conveying mechanism conveys the empty containers to the filling unit for filling. The conveying mechanism conveys the filled containers to the film cutting pre-loading unit. The film cutting pre-loading unit cuts incoming film sheets and pre-places the cut film sheets at the opening of the container. The film sheets are then conveyed to the heat sealing unit via the conveying mechanism for heat sealing at the opening of the container. The film sheets are finally conveyed to the discharging unit via the mechanism and the discharging unit transfers the discharged materials.

[0007] Furthermore, the film cutting preloading unit includes a film cutting preloading mechanism, which is located above the conveying mechanism, and includes a cutter assembly and a suction rod assembly, the cutter assembly includes an upper cutting seat and a lower cutting seat, and the film passes through between the upper cutting seat and the lower cutting seat, and the upper cutting seat and the lower cutting seat interact with each other to cut the film; the suction rod assembly includes a suction rod driving part and a suction rod, the output end of the suction rod driving part is connected to the suction rod and drives the suction rod to move; the upper cutting seat and the lower cutting seat are respectively provided with through holes for the suction rod to pass through, the suction rod passes through the through hole of the upper cutting seat to absorb the film, and continues to pass through the through hole of the lower cutting seat to pre-place the film at the container opening on the conveying mechanism.

[0008] Furthermore, the film cutting pre-installation unit also includes a film roll feeding mechanism, which includes a feeding reel, a first film pulling assembly and a second film pulling assembly. After the film roll is fed by the feeding reel, it is pulled out by the first film pulling assembly, transmitted to the film cutting pre-installation mechanism, and pulled out by the second film pulling assembly.

[0009] Furthermore, the conveying mechanism includes a conveyor belt and a jig. The conveyor belt is an annular conveyor belt that is enclosed up and down in the vertical direction. The jig is fixed on the conveyor belt at equal intervals. The same jig is provided with multiple limiting grooves for accommodating containers. The container is placed in the limiting groove with the opening of the container facing upward, and the opening of the container is lower than the upper surface of the jig.

[0010] Furthermore, the filling unit includes a filling mechanism, which is arranged above the conveying mechanism and includes a catheter and a filling drive unit. The output end of the filling drive unit is connected to the catheter. When the conveying mechanism conveys the container to the bottom of the filling mechanism, the filling drive unit drives the catheter to move downward and fills the container in the fixture with liquid through the catheter. After completion, the catheter moves up and returns to its original position under the action of the filling drive unit.

[0011] Furthermore, the heat sealing unit includes a heat sealing mechanism, which is arranged above the conveying mechanism and includes a heat sealing drive unit and a heat sealing head, and the output end of the heat sealing drive unit is connected to the heat sealing head; when the conveying mechanism conveys the container to the bottom of the heat sealing mechanism, the heat sealing drive unit drives the heat sealing head downward and acts on the container and the membrane to heat-seal the membrane at the opening of the container.

[0012] Furthermore, the discharging unit includes a defective product transfer mechanism and a pushing mechanism. The defective product transfer mechanism is arranged above the conveying mechanism, and the pushing mechanism is arranged below the conveying mechanism. The pushing mechanism includes a lifting assembly and a push rod assembly. The lifting assembly pushes out containers that are not properly filled with liquid or heat-sealed from the jig, and the defective product transfer mechanism clamps and transfers them for unloading; the remaining containers are pushed out of the jig and unloaded by the push rod assembly.

[0013] Furthermore, the feeding unit includes a vibration plate and a feeding robot. The vibration plate is connected to a feeding channel. The container is fed through the vibration plate and placed in the feeding channel with the opening facing upward. The feeding robot picks up the container and transfers it to the conveying mechanism.

[0014] The present invention also provides a film cutting, filling and sealing method, comprising the following steps:

[0015] A1, empty containers are loaded to the filling station for filling operation;

[0016] A2, the film is fed to the film cutting station and cut into a shape consistent with the opening of the container; the film cutting station is also provided with a transfer mechanism, and the cut film is pre-placed at the opening of the container after filling through the transfer mechanism;

[0017] A3, the container with the membrane pre-installed is transferred to the heat sealing station for heat sealing operation.

[0018] Furthermore, the film cutting station includes a film cutting mechanism, which is provided with a channel for a transfer mechanism to pass through, and the transfer mechanism, the cut film and the filled container are on the same vertical plane. The transfer mechanism passes through the channel of the film cutting mechanism to absorb the cut film and pre-place it at the opening of the filled container.

[0019] After adopting the above structure, the present invention has the following beneficial effects: it can automatically realize the steps of loading, filling, cutting, pre-installing, heat-sealing the film at the container opening and unloading the container, with a high degree of automation; and ensure the alignment between the heat-sealing mechanism, the film and the container opening to ensure the sealing effect.

[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the feeding robot of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the liquid filling mechanism of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the film cutting pre-assembly unit of the present invention;

[0025] Figure 5 yes Figure 4 A cross-sectional view of

[0026] Figure 6 It is a structural schematic diagram of the upper cutting seat and the lower cutting seat of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the heat sealing mechanism of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the discharging unit and the fixture of the present invention. Figure 1 ;

[0029] Fig. 9 This is a schematic diagram of the structure of the discharging unit and the fixture from another angle of the present invention. Figure 2 .

[0030] Description of labels:

[0031] Conveying mechanism 1, conveyor belt 11, jig 12;

[0032] Feeding unit 2, vibrating plate 21, feeding manipulator 23, feeding transverse cylinder 221, feeding lifting cylinder 222, picking part 223, feeding channel 22;

[0033] Filling unit 3, filling mechanism 31, filling support 311, filling drive unit 312, catheter 313;

[0034] Film cutting pre-installation unit 4, film rolling feeding mechanism 41, feeding reel 411, first film drawing assembly 412, second film drawing assembly 413, film cutting pre-installation mechanism 42, cutter assembly 421, upper cutting seat 4211, lower cutting seat 4212, cutter driving part 4213, suction rod assembly 422, suction rod driving part 4221, suction rod 4222, support plate 423;

[0035] Heat sealing unit 5, heat sealing mechanism 51, heat sealing driving unit 511, heat sealing head 512, guide column 513, heat sealing support 514;

[0036] The discharging unit 6, the defective product transferring mechanism 61, the transverse moving driving part 611, the lifting driving part 612, the clamping part 613, the pushing mechanism 62, the lifting assembly 621, the lifting driving part 6211, the pushing rod 6212, the pushing rod assembly 622, the pushing rod driving part 6221, and the pushing rod 6222. DETAILED DESCRIPTION

[0037] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0038] At the same time, the directions such as front, back, left, and right involved in this embodiment are only used as a reference for directions and do not represent directions in actual use.

[0039] In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0040] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0041] Embodiment 1:

[0042] See also Figures 1 to 9 As shown, the present invention provides an automatic film cutting, filling and sealing machine, which is used to cut film sheets and fill and seal liquid products. The automatic film cutting, filling and sealing machine includes a conveying mechanism 1 and a loading unit 2, a filling unit 3, a film cutting and pre-loading unit 4, a heat sealing unit 5 and a discharging unit 6 arranged in sequence along the conveying direction of the conveying mechanism 1. The loading unit 2 is used to load empty containers and convey them to the conveying mechanism 1. The conveying mechanism 1 conveys the empty containers to the filling unit 3 for filling. The conveying mechanism 1 conveys the filled containers to the film cutting and pre-loading unit 4. The film cutting and pre-loading unit 4 cuts the incoming film sheets and pre-places the cut film sheets at the opening of the container. The film cutting and pre-loading unit 4 is then conveyed to the heat sealing unit 5 through the conveying mechanism 1 for heat sealing of the film sheets at the opening of the container. The film cutting and pre-loading unit 4 is finally conveyed to the discharging unit 6 by the conveying mechanism 1, and the discharging unit 6 transfers the discharging material. The present invention realizes the loading, filling, film cutting, pre-installation of the film at the opening of the container, heat sealing and unloading processes of the container at the same time through the conveying of the conveying mechanism 1, with a high degree of automation and improved production efficiency; and the film cutting and pre-installation unit 4 pre-installs the cut film at the opening of the container, and then transfers it to the heat sealing unit for heat sealing, thereby ensuring the alignment accuracy of the film and the container opening, reducing the defective rate and improving the filling and sealing quality.

[0043] In this embodiment, the liquid product is a nucleic acid detection reagent, and the container for the liquid product is a reagent bottle. Figure 1As shown, the conveying mechanism 1 includes a conveyor belt 11 and a fixture 12. The conveyor belt 11 is an annular conveyor belt enclosed up and down in the vertical direction. The fixture 12 is fixedly arranged on the conveyor belt 11 at equal intervals. The same fixture 12 is provided with a plurality of limit grooves for accommodating containers. When the container is placed in the limit groove, the opening of the container faces upward, and the opening of the container is lower than the upper surface of the fixture 12, so as to facilitate the subsequent sealing of the diaphragm at the opening of the container. Of course, in other embodiments, the fixture 12 can adopt different structures according to the shape of the reagent bottle, which are not listed in this article. Among them, a fixture 12 is provided with 6 limit grooves, and correspondingly, the filling unit 3, the film cutting and pre-loading unit 4, the heat sealing unit 5 and the discharging unit 6 can simultaneously realize the loading, filling, film cutting of the diaphragm, pre-loading of the diaphragm at the opening of the container, heat sealing and unloading processes of 6 products, thereby improving the overall filling efficiency. The conveyor belt 11 is a chain conveyor belt structure, including a motor, gears, chains and a conveyor plate laid on the chain. The motor drives the gears to rotate, thereby transmitting to the chain and driving the conveyor plate to move. The fixture 12 is fixedly connected to the conveyor plate, for example, by screwing, so that the distance between the fixtures 12 can be adjusted by adjusting the position of the fixture 12 fixed on the conveyor plate. In this embodiment, the loading unit 2, the filling unit 3, the film cutting and pre-installation unit 4, and the heat sealing unit 5 are located on the plane above the circular conveyor belt 11, and the discharging unit 6 is located at the turning point of the circular conveyor belt 11. In this way, the empty circular conveyor belt 11 is refluxed below the corresponding circular conveyor belt 11.

[0044] See also Figure 1 and Figure 2 As shown, the feeding unit 2 includes a vibration plate 21 and a feeding manipulator 23. The vibration plate 21 is connected to the feeding channel 22. The container, that is, the empty reagent bottle, is fed through the vibration plate 21 and placed in the feeding channel 22 with the opening facing upward. The feeding manipulator 23 picks up the container and transfers it to the conveying mechanism 1. The feeding manipulator 23 is fixedly arranged on one side of the conveying mechanism 1. The feeding manipulator 23 includes a feeding transverse cylinder 221, a feeding lifting cylinder 222 and a picking part 223. The output end of the feeding transverse cylinder 221 is connected to the feeding lifting cylinder 222, and the output end of the feeding lifting cylinder 222 is connected to the picking part 223. The picking part 223 is driven to move horizontally left and right and to move up and down through the cooperation of the feeding transverse cylinder 221 and the feeding lifting cylinder 222, so as to pick up the container from the feeding channel 22, transfer it, and place it in the fixture 12 of the conveying mechanism 1. In this embodiment, the picking part 223 can adopt a suction rod to pick up the container by vacuuming. The number of the picking parts 223 is 6, so 6 containers can be loaded at one time to improve the loading and filling efficiency.

[0045] The rear conveying mechanism 1 moves to drive the container in the fixture 12 to be conveyed to the filling unit 3. Referring to Figure 3, the filling unit 3 includes a filling mechanism 31, which is arranged above the conveying mechanism 1. The filling mechanism 31 includes a filling support 311, a filling drive unit 312 and a conduit 313. The filling mechanism 31 is fixed above the conveyor belt 11 through the support 311, and the filling drive unit 312 is fixed on the filling support 311. The output end of the filling drive unit 312 is connected to the conduit 313, and the conduit 313 is connected to the liquid box through a connecting pipe (not shown in the figure). The conduit 313 can be set to 6, and each conduit 313 can be connected to the liquid box separately. In this way, if the liquid types in each liquid box are inconsistent, the filling of multiple liquids in the reagent bottle can be realized at the same time. In this embodiment, the liquid types in each liquid box are consistent, and the filling of one liquid is realized. When the conveying mechanism 1 conveys the container to the bottom of the filling mechanism 31, the guide tube 313 is driven by the filling driving unit 312 to move downward and insert into the container for filling. After completion, the guide tube 313 is driven by the filling driving unit 312 to move upward and return to its original position. The filling unit 3 may also include a first detection mechanism for detecting whether the liquid is filled in place; after completing the filling operation, the first detection mechanism is aligned with the container on the fixture 12. The first detection mechanism may use a sensor to detect whether the liquid is filled in place by sensing the liquid level of the container.

[0046] The conveying mechanism 1 moves to drive the container in the fixture 12 to be conveyed to the film cutting pre-assembly unit 4. Figures 4 to 6As shown, the film cutting preloading unit 4 includes a film roll feeding mechanism 41 and a film cutting preloading mechanism 42. The film roll feeding mechanism 41 is arranged on one side of the film cutting preloading mechanism 42. The film is fed to the film cutting preloading mechanism 42 through the film roll feeding mechanism 41, and the film is cut by the film cutting preloading mechanism 42. The film cutting preloading mechanism 42 then transfers the cut film to the top of the container on the conveying mechanism, and drives it to move downward and preset it to the opening of the container. The film loading mechanism 41 includes a loading reel 411, a first film-pulling assembly 412 and a second film-pulling assembly 413. The first film-pulling assembly 412 and the second film-pulling assembly 413 have the same structure and both include two film-pulling shafts arranged in parallel up and down. The gap between the two film-pulling shafts is for the film to pass through. The first film-pulling assembly 412 and the second film-pulling assembly 413 are respectively arranged on both sides of the film-cutting pre-installation mechanism 42; after the film of the opening of the sealed container is loaded by the loading reel 411, it is transmitted to the film-cutting pre-installation mechanism 42 by the first film-pulling assembly 412 for cutting, and is pulled out by the second film-pulling assembly 413 to be discharged. The film cutting pre-loading mechanism 42 is located above the conveying mechanism 1, and includes a cutter assembly 421, a suction rod assembly 422 and a support plate 423. The cutter assembly 421 and the suction rod assembly 422 are arranged on the support plate 423. The cutter assembly 421 includes an upper cutting seat 4211 and a lower cutting seat 4212. The lower cutting seat 4212 is fixedly arranged on the support plate 423. The film sheet conveyed by the first film pulling assembly 412 passes between the upper cutting seat 4211 and the lower cutting seat 4212. A cutter driving unit 4213 is connected above the upper cutting seat 4211. The upper cutting seat 4211 is driven downward by the cutter driving unit 4213 to move with the lower cutting seat 4212. The suction rod assembly 422 includes a suction rod driving unit 4221 and a plurality of suction rods 4222; the upper cutting seat 4211, the lower cutting seat 4212 and the support plate 423 are provided with through holes for the suction rod 4222 to pass through; when the film is cut by the cutter assembly 421, the suction rod 4222 is driven by the suction rod driving unit 4221 to move downward, pass through the upper cutting seat 4211 and absorb the cut film, and then continue to move downward under the action of the suction rod driving unit 4221, pass through the lower cutting seat 4212 and the support plate 423, and pre-set the film to the container opening on the conveying mechanism 1 below. Because the fixture 12 of the conveying mechanism 1 is provided with a plurality of limiting grooves for accommodating containers, and when the container is placed in the limiting groove 1, the opening of the container is lower than the surface of the limiting groove. In this way, when the suction rod 4222 places the diaphragm in the container of the fixture 12, the diaphragm is prevented from detaching from the container, thereby facilitating subsequent transportation to the next workstation through the conveying mechanism 1.

[0047] See also Figure 7As shown, the heat sealing unit 5 includes a heat sealing mechanism 51, which is arranged above the conveying mechanism 1. The heat sealing mechanism 51 includes a heat sealing driving unit 511, a heat sealing head 512, a guide column 513 and a heat sealing support 514. The heat sealing mechanism 51 is fixedly arranged above the conveying mechanism 1 through the heat sealing support 514. The heat sealing driving unit 511 is fixedly installed on the heat sealing support 514. The output end of the heat sealing driving unit 511 is connected to the heat sealing head 512 and the guide column 513. In this embodiment, the heat sealing head 51 2 corresponds to 6, and there are two guide posts 513, which are respectively arranged on the left and right sides of the heat sealing head 512; when the conveying mechanism 1 transfers the container to the bottom of the heat sealing mechanism 51, the heat sealing drive unit 511 drives the heat sealing head 512 and the guide posts 513 to move downward, and the guide posts 513 first contact the conveyor belt 11 for guidance, and then the heat sealing drive unit 511 continues to drive the heat sealing head 512 to press down until it is in contact with the container opening and the diaphragm in the conveying mechanism 1, and heat-seals the diaphragm at the container opening. In this embodiment, the guiding effect of the guide posts 513 prevents the heat sealing head 512 from shifting during the downward movement, and avoids the heat sealing head 512 from being misaligned with the container opening and the diaphragm on the fixture 12, resulting in the problem of inadequate heat sealing. The heat sealing unit 5 also includes a second detection mechanism for detecting whether the diaphragm is heat-sealed in place; the second detection mechanism can adopt a structure such as a CCD detector.

[0048] The heat-sealed container is transported to the discharging unit 6 via the conveying mechanism 1. Figure 1 and Figures 8 to 9As shown, the discharging unit 6 includes a defective product transfer mechanism 61 and a push mechanism 62. The defective product transfer mechanism 62 is arranged above the conveying mechanism 1, and the push mechanism 62 is arranged below the conveying mechanism 1. The push mechanism 62 includes a lifting assembly 621 and a push rod assembly 622. The lifting assembly 621 pushes out the containers that are not properly filled or heat-sealed, and the defective product transfer mechanism 61 clamps and transfers them for unloading; the remaining containers are pushed for unloading by the push rod assembly 622. In this embodiment, the conveyor belt 11 is an annular conveyor belt enclosed up and down in the vertical direction, then the defective product transfer mechanism 61 is arranged above the conveyor belt 11, the push mechanism 62 is arranged inside the annular conveyor belt 11, and the lifting assembly 621 is located directly below the defective product transfer mechanism 61; and in order to facilitate the action of the push rod assembly 622, the push rod assembly 622 faces the rotation part of the annular conveyor belt 11. The lifting assembly 621 includes a lifting drive unit 6211 and a push rod 6212. The output end of the lifting drive unit 6211 is connected to the push rod 6212. Specifically, the number of the push rods 6212 and the lifting drive unit 6211 is 6, corresponding to the containers on the fixture 12. The lifting drive unit 6211 is also connected to the control system, receiving the signal sent by the control system to drive the push rod 6212 under the defective products such as inadequate filling or heat sealing to move upward, so as to realize the ejection of the containers in the fixture 12 that are not filled or heat-sealed in place, and the remaining containers in the fixture 12 are good products that are filled and heat-sealed in place. The ejected containers are clamped by the defective product transfer mechanism 61 and transferred for unloading. The defective product transfer mechanism 61 is provided with a transverse driving part 611, a lifting driving part 612 and a clamping part 613. The transverse driving part 611 and the lifting driving part 612 are used to control the left and right transverse movement and the up and down lifting of the clamping part 613. The clamping part 613 is two openable and closable clamping plates. When the two clamping plates are closed, the opposite sides of the two clamping plates jointly enclose a positioning hole to clamp the ejected container from the fixture 12 and transfer it.

[0049] The push rod assembly 622 includes a push rod driving unit 6221 and a push rod 6222. The output end of the push rod driving unit 6221 is connected to the push rod 6222, and the push rod 6222 faces the turning point of the circular conveyor belt 11. The remaining products on the fixture 12 are transported to the turning point of the circular conveyor belt 11 under the action of the conveyor belt 11, and the push rod 6222 is extended under the action of the push rod driving unit 6221 to push the remaining products in the fixture 12 to unload the materials, thereby completing the unloading of good products. In this embodiment, based on the consideration of installation convenience and assembly optimization, the push rod assembly 622 and the lifting assembly 621 can be arranged on the left and right sides of the same fixed plate, and the moving direction of the push rod 6222 and the moving direction of the top rod 6212 are perpendicular to each other.

[0050] The specific engineering process of the present invention is as follows:

[0051] A plurality of empty containers are placed in the vibration plate 21. The empty containers are moved to the feeding channel 22 by the vibration of the vibration plate 21. The feeding channel 22 is limited so that the empty containers are discharged with the opening facing upward. The rear feeding manipulator 23 clamps the empty containers on the feeding channel 22 and moves them to the fixture 12 of the endless conveyor belt 11.

[0052] The conveyor belt 11 conveys the container on the fixture 12 to the filling unit 3, which is located below the filling mechanism 31. The guide tube 313 is driven by the filling lifting part 312 to move downward and insert into the container for filling. After completion, the guide tube 313 is driven by the filling lifting part 312 to move upward and return to its original position.

[0053] The conveyor belt 11 continues to convey the container after filling to the film cutting pre-installation unit 4, which is located below the film cutting pre-installation mechanism 42; after the film is loaded by the loading reel 411, it is conveyed by the first film pulling assembly 412 to between the upper cutting seat 4211 and the lower cutting seat 4212, and the film is cut through the interaction between the two; the suction rod 4222 is driven by the suction rod driving part 4221 to move downward, pass through the upper cutting seat 4211 and suck the cut film, and then continue to move downward under the action of the suction rod driving part 4221, pass through the lower cutting seat 4212 and the support plate 423, and pre-set the film to the container opening on the conveying mechanism 1 below;

[0054] The conveyor belt 11 continues to convey the container pre-installed with the film to the heat sealing unit 5, which is located below the heat sealing mechanism 51. The heat sealing drive unit 511 drives the heat sealing head 512 and the guide column 513 to move downward. The guide column 513 first abuts against the conveyor belt 11 for guidance, and then the heat sealing drive unit 511 continues to drive the heat sealing head 512 to press down until it fits with the container opening and the film in the conveying mechanism 1, and heat-seals the film at the container opening. The product is filled and sealed through the above process.

[0055] The conveyor belt 11 continues to transport the sealed container to the discharging unit 6, which is located below the defective product transfer mechanism 61. The ejector rod 6212 below the defective product such as inadequate filling or heat sealing is driven upward by the jacking drive unit 6211 to eject it from the fixture 12. The defective product transfer mechanism 61 clamps the defective product and transfers it for discharging. The remaining products are transported to the rotating part of the conveyor belt 11 by the conveyor belt 11. The push rod 6222 is extended by the push rod drive unit 6221 to push the remaining products in the fixture 12 to unload, completing the unloading of good products. The above process has a high degree of automation, and the loading, filling, cutting of the membrane, pre-installation of the membrane on the container, heat sealing of the membrane at the container opening, and unloading steps of the container are automatically realized, and the alignment between the heat sealing mechanism, the membrane and the container opening is ensured to ensure the sealing effect.

[0056] Embodiment 2:

[0057] This embodiment provides a film cutting, filling and sealing method, comprising the following steps:

[0058] A1, empty containers are loaded to the filling station for filling operation;

[0059] A2, the film is fed to the film cutting station and cut into a shape consistent with the opening of the container; the film cutting station is also provided with a transfer mechanism, and the cut film is pre-placed at the opening of the container after filling through the transfer mechanism;

[0060] A3, the container with the membrane pre-installed is transferred to the heat sealing station for heat sealing operation.

[0061] Furthermore, the film cutting station includes a film cutting mechanism, which is provided with a channel for a transfer mechanism to pass through, and the transfer mechanism, the cut film and the filled container are on the same vertical plane. The transfer mechanism passes through the channel of the film cutting mechanism to absorb the cut film and pre-place it at the opening of the filled container.

[0062] By using the automatic film cutting, filling and sealing machine and the film cutting, filling and sealing method provided by the present invention, the cut film is first placed at the opening of the container, and the alignment accuracy of the film and the container is guaranteed in this process; then the container with the film is transferred to the heat sealing station for heat sealing operation. In this process, it is only necessary to ensure the alignment of the heat sealing mechanism and the container, which reduces the difficulty of alignment. In this way, the alignment effect of the overall sealing is guaranteed, and the sealing effect is improved.

[0063] The above are only preferred embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. An automatic film cutting, filling and sealing machine, characterized in that: It comprises a conveying mechanism and a loading unit, a filling unit, a film cutting and pre-installing unit, a heat sealing unit and a discharging unit which are arranged in sequence along the conveying direction of the conveying mechanism, wherein the loading unit is used to load empty containers and transfer them to the conveying mechanism, the conveying mechanism transfers the empty containers to the filling unit for filling, the conveying mechanism transfers the filled containers to the film cutting and pre-installing unit, the film cutting and pre-installing unit cuts incoming film sheets and pre-places the cut film sheets at the opening of the container, and then transfers them to the heat sealing unit via the conveying mechanism for heat sealing the film sheets at the opening of the container, and finally transfers them to the discharging unit via the conveying mechanism, and the discharging unit transfers the discharging materials; The film cutting preloading unit includes a film cutting preloading mechanism, which is located above the conveying mechanism. The film cutting preloading mechanism includes a cutter assembly and a suction rod assembly. The cutter assembly includes an upper cutting seat and a lower cutting seat. The film sheet passes through between the upper cutting seat and the lower cutting seat, and the upper cutting seat and the lower cutting seat interact with each other to cut the film sheet; the suction rod assembly includes a suction rod driving part and a suction rod, and the output end of the suction rod driving part is connected to the suction rod and drives the suction rod to move; the upper cutting seat and the lower cutting seat are respectively provided with through holes for the suction rod to pass through, and the suction rod passes through the through hole of the upper cutting seat to absorb the film sheet, and continues to pass through the through hole of the lower cutting seat to pre-place the film sheet at the container opening on the conveying mechanism.

2. The automatic film cutting, filling and sealing machine according to claim 1 is characterized in that: The film pre-installation unit also includes a film roll feeding mechanism, which includes a feeding reel, a first film pulling assembly and a second film pulling assembly. After the film roll is fed by the feeding reel, it is pulled out by the first film pulling assembly, transmitted to the film pre-installation mechanism, and pulled out by the second film pulling assembly.

3. The automatic film cutting, filling and sealing machine according to claim 1 is characterized in that: The conveying mechanism includes a conveyor belt and a jig. The conveyor belt is an annular conveyor belt enclosed up and down in the vertical direction. The jig is fixed on the conveyor belt at equal intervals. The same jig is provided with multiple limiting grooves for accommodating containers. The container is placed in the limiting groove with the opening of the container facing upward, and the opening of the container is lower than the upper surface of the jig.

4. The automatic film cutting, filling and sealing machine according to claim 1 is characterized in that: The filling unit includes a filling mechanism, which is arranged above the conveying mechanism and includes a catheter and a filling drive unit. The output end of the filling drive unit is connected to the catheter. When the conveying mechanism conveys the container to the bottom of the filling mechanism, the filling drive unit drives the catheter to move downward and fills the container in the fixture with liquid through the catheter. After completion, the catheter moves upward and returns to its original position under the action of the filling drive unit.

5. The automatic film cutting, filling and sealing machine according to claim 1 is characterized in that: The heat sealing unit includes a heat sealing mechanism, which is arranged above the conveying mechanism and includes a heat sealing drive unit and a heat sealing head. The output end of the heat sealing drive unit is connected to the heat sealing head. When the conveying mechanism conveys the container to the bottom of the heat sealing mechanism, the heat sealing drive unit drives the heat sealing head to press down and act on the container and the membrane to heat-seal the membrane at the opening of the container.

6. The automatic film cutting, filling and sealing machine according to claim 1 is characterized in that: The discharging unit includes a defective product transfer mechanism and a pushing mechanism. The defective product transfer mechanism is arranged above the conveying mechanism, and the pushing mechanism is arranged below the conveying mechanism. The pushing mechanism includes a lifting assembly and a push rod assembly. The lifting assembly pushes out containers that are not properly filled with liquid or heat-sealed from the fixture, and the defective product transfer mechanism clamps and transfers them for unloading; the remaining containers are pushed out of the fixture by the push rod assembly for unloading.

7. The automatic film cutting, filling and sealing machine according to claim 1 is characterized in that: The feeding unit comprises a vibrating plate and a feeding robot. The vibrating plate is connected to a feeding channel. The container is fed through the vibrating plate and placed in the feeding channel with the opening facing upward. The feeding robot picks up the container and transfers it to the conveying mechanism.

8. A film cutting, filling and sealing method, using the automatic film cutting, filling and sealing machine according to any one of claims 1 to 7 for film cutting, filling and sealing, characterized in that: The steps include: A1, empty containers are loaded to the filling station for filling operation; A2, the film is fed to the film cutting station and cut into a shape consistent with the opening of the container; the film cutting station includes a film cutting mechanism, the film cutting mechanism is provided with a channel for the transfer mechanism to pass through, the transfer mechanism, the cut film and the filled container are on the same vertical plane, the transfer mechanism passes through the channel of the film cutting mechanism to absorb the cut film and pre-place it at the opening of the filled container; the film cutting station is also provided with a transfer mechanism, and the cut film is pre-placed at the opening of the filled container through the transfer mechanism; A3, the container with the membrane pre-installed is transferred to the heat sealing station for heat sealing operation.

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