Liquid material packaging method

Abstract

A liquid material packaging method comprises the following steps that a, a flexible packaging container with an opening in the top end is manufactured and conveyed, and the flexible packaging container is filled with liquid materials in the flexible packaging container conveying process; b, sealing an opening in the top end of the filled flexible packaging container; c, shearing and conveying a flexible package finished product; and d, sending out a flexible package finished product. In the step a, a filling device adopted for filling the liquid materials and a longitudinal sealing device keep synchronous movement in the horizontal direction all the time in the whole liquid material filling process, and after the liquid material filling process is completed, the filling device and the longitudinal sealing device relatively move in the horizontal direction; and the filling device is positioned above the next batch of flexible packaging containers to be filled. The processing method has the beneficial effects that the processing steps are improved, the structure of the filling device is correspondingly improved, the improvement is matched with the improved processing method, and the purposes of reducing cost and increasing efficiency can be well achieved.

Description

Technical Field

[0001] The present invention relates to a method for packaging liquid materials. Background Art

[0002] For the liquid material packaging methods adopted by existing high-speed liquid packaging machines, the turntable and the longitudinal sealing device rotate synchronously. And during the process of the longitudinal sealing device conveying the packaging film, two processing steps are sequentially completed: longitudinally sealing the packaging film to form a top-opening packaging bag (completed by the longitudinal sealing device), and filling and packaging the material into the packaging bag (completed by the filling device arranged on the turntable). Then, the top opening is sequentially sealed, cut along the longitudinal sealing area to form a packaged product, and the packaged product is sent out, thus realizing high-speed full-automatic packaging.

[0003] For example, a packaging machine disclosed in a Chinese patent document with the publication number CN112607075A and the name "Horizontal Pump Valve High-Speed Liquid Packaging Machine" includes a machine frame and a film feeding device, a packaging bag forming device, a longitudinal sealing device, a filling device, and a sealing device that are respectively installed on the machine frame and arranged in sequence along the conveying direction of the packaging material. It is characterized in that: the filling device further includes a rotatable storage tray and a material metering and output mechanism. The rotatable storage tray is installed on a rotating frame. The material metering and output mechanism includes at least one material metering and output device. The material metering and output device includes a mounting seat and at least one horizontal material metering and output unit. The horizontal material metering and output unit includes a pumping and feeding pump, a three-way valve, and a three-way valve communication state conversion mechanism.

[0004] The equipment of this packaging machine and the liquid material packaging method cooperate with each other. In particular, its rotating frame and the longitudinal sealing device arranged outside the rotating frame and rotating around the rotating frame are respectively driven by the same driving mechanism. And this driving mechanism uses a driving device (usually a servo motor) to drive the rotating frame and the longitudinal sealing device to rotate respectively through transmission mechanisms or equipment such as a cam divider and a gear transmission mechanism. Due to its relatively complex structure, a large number of components, and the need to enable the two (rotating frame, longitudinal sealing device) to rotate synchronously (both rotate continuously without interruption), and the filling heads need to be distributed circumferentially along the rotating frame and correspond one-to-one with the longitudinal sealing device, this makes the number of components very large, and the precision requirements of the components used are high, which makes it difficult to reduce the equipment cost and energy consumption. Once damaged, it is very troublesome to repair and replace.

[0005] In order to improve work efficiency, a Chinese patent document with publication number CN117864515A and title "Liquid filling mechanism of a high-speed packaging machine with reasonable structure" discloses a liquid filling mechanism of a high-speed packaging machine. It includes a frame, a hopper, a plurality of material quantitative distribution units, a plurality of filling devices, and a rotating frame. It is characterized in that: the material quantitative distribution unit includes a servo motor and a rotor pump. The servo motor and the rotor pump are respectively installed on the rotating frame. The output shaft of the servo motor is connected to the transmission shaft of the rotor pump. The discharge port is communicated with the inlet of the rotor pump through a feed pipe, and the outlet of the rotor pump is communicated with the inlet of the filling device through a feeding pipe.

[0006] However, the applicant found that the packaging method of liquid materials for the above high-speed packaging machine has not changed. Only some improvements have been made to the liquid filling mechanism, but the structural design of the equipment has not changed substantially. There are still a large number of components. The rotating frame and the longitudinal sealing device still use the existing drive mechanisms to drive. Therefore, there are still problems such as unreasonable structure, high equipment cost, and high energy consumption. Summary of the Invention

[0007] The object of the present invention is to provide a packaging method for liquid materials, which can reduce energy consumption. The technical solution adopted is as follows: A packaging method for liquid materials includes the following steps: a. Make a soft packaging container with an opening at the top and convey the soft packaging container. During the process of conveying the soft packaging container, perform the work of filling liquid materials into the soft packaging container; b. Seal the opening at the top of the soft packaging container that has been filled; c. Cut and convey the soft packaging finished product; d. Send out the soft packaging finished product; It is characterized in that: in step a, the filling device used for filling liquid materials always moves synchronously with the longitudinal sealing device in the horizontal direction during the whole process of filling liquid materials (whether it is stationary or moving). The process of filling liquid materials includes the following actions in sequence: the filling device descends, inserts multiple filling heads and fills a batch of soft packaging containers located in the longitudinal sealing device, after filling, the filling device rises, lifts multiple filling heads and leaves this batch of soft packaging containers that have been filled with materials. After the process of filling liquid materials is completed, the filling device and the longitudinal sealing device move relative to each other in the horizontal direction until the filling device is located above the next batch of soft packaging containers waiting to be filled; the longitudinal sealing device drives all soft packaging containers to move intermittently or continuously in the horizontal direction.

[0008] In a preferred solution, in step a, the longitudinal sealing device is used to make a plurality of soft packaging containers with openings at the top and convey the soft packaging containers. The movement path of the longitudinal sealing device is a closed circular curve, and the filling device is located above the longitudinal sealing device.

[0009] In one solution, the longitudinal sealing device moves intermittently. When the longitudinal sealing device stops moving, the filling device completes the work of filling liquid materials, and then the longitudinal sealing device moves and brings the next batch of flexible packaging containers waiting to be filled below the filling device.

[0010] In another solution, the longitudinal sealing device moves continuously; when the filling device moves synchronously with the longitudinal sealing device (same speed and same direction), the filling device completes the work of filling liquid materials; after the work of filling liquid materials is completed, the filling device moves in the reverse direction (i.e., the moving direction of the filling device is opposite to that of the longitudinal sealing device) to above the next batch of flexible packaging containers waiting to be filled.

[0011] In a more optimal solution, the longitudinal sealing device and the filling device are respectively driven by different driving mechanisms.

[0012] The beneficial effect of the present invention compared with the prior art is that the processing steps are improved, the method of mutual cooperation between the longitudinal sealing device and the filling device adopted in step a is improved, the actions of the two are optimized, and the structure of the filling device is correspondingly improved, so that the filling device only fills one batch of flexible packaging containers at a time, greatly optimizing the structure of the filling device, and these improvements cooperate with the improved processing method to well achieve the purpose of cost reduction and efficiency increase. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of an embodiment of the present invention; Figure 2 is Figure 1 a schematic diagram of the filling device of the shown embodiment; Figure 3 is a schematic diagram of the filling device of an embodiment of the present invention; Figure 4 is Figure 3 a schematic diagram of another angle of the filling device of the shown embodiment; Figure 5 is a schematic diagram of the filling device of an embodiment of the present invention; Figure 6 is a schematic structural diagram of an embodiment of the present invention; Figure 7 is Figure 6 a schematic structural diagram of the support frame, the rotating frame, the rotating frame driving mechanism, the hopper, and the liquid filling mechanism of the shown embodiment; Figure 8 is a schematic structural diagram of the support frame, the rotating frame, the rotating frame driving mechanism, the hopper, and the liquid filling mechanism of an embodiment of the present invention; Figure 9It is a schematic structural diagram of a support frame, a rotating frame, a rotating frame driving mechanism, a hopper, and a liquid filling mechanism according to an embodiment of the present invention; Figure 10 It is a schematic structural diagram of an embodiment of the present invention; Figure 11 Is Figure 10 A schematic structural diagram of the support frame, the rotating frame, the rotating frame driving mechanism, the hopper, and the liquid filling mechanism shown in the embodiment; Figure 12 It is a schematic structural diagram of a support frame, a hopper, and a liquid filling mechanism according to an embodiment of the present invention. Detailed implementation manners

[0014] As Figure 1 , 2 shown, a liquid material packaging method in an embodiment of the present application includes the following steps: a. Make a flexible packaging container with an opening at the top and convey the flexible packaging container, and fill the flexible packaging container with liquid material during the conveying process of the flexible packaging container; b. Seal the opening at the top of the flexible packaging container that has been filled; c. Cut and convey the flexible packaging finished product; d. Send out the flexible packaging finished product; In step a, during the entire process of filling the liquid material, the filling device used to fill the liquid material always moves synchronously with the longitudinal sealing device in the horizontal direction (whether it is stationary or moving; being stationary is equivalent to a moving speed of 0). The process of filling the liquid material sequentially includes the following actions: the filling device descends, inserts multiple filling heads and fills a batch of flexible packaging containers located in the longitudinal sealing device, the filling device rises after filling is completed, and the multiple filling heads are lifted and separated from this batch of flexible packaging containers that have been filled with material. After the process of filling the liquid material is completed, the filling device and the longitudinal sealing device move relative to each other in the horizontal direction until the filling device is located above the next batch of flexible packaging containers waiting to be filled; the longitudinal sealing device drives all the flexible packaging containers to perform intermittent movement or continuous movement in the horizontal direction.

[0015] As Figure 1 , 2 shown, in an alternative embodiment of the present application, in step a, a longitudinal sealing device is used to make multiple flexible packaging containers with openings at the top and convey the flexible packaging containers. The movement path of the longitudinal sealing device is a closed circular curve, and the filling device is located above the longitudinal sealing device.

[0016] As Figure 5As shown, in an alternative embodiment of the present application, the longitudinal sealing device moves intermittently. When the longitudinal sealing device stops moving, the filling device completes the work of filling liquid materials, and then the longitudinal sealing device moves and brings the next batch of soft packaging containers waiting to be filled under the filling device.

[0017] As Figure 3 , 4 shown, in an alternative embodiment of the present application, the longitudinal sealing device moves continuously; when the filling device moves synchronously with the longitudinal sealing device (same speed and same direction), the filling device completes the work of filling liquid materials; after the work of filling liquid materials is completed, the filling device moves in the reverse direction (i.e., the movement direction of the filling device is opposite to that of the longitudinal sealing device) to above the next batch of soft packaging containers waiting to be filled.

[0018] As Figure 3 , 4 shown, in an alternative embodiment of the present application, the movement of the longitudinal sealing device is a uniform motion.

[0019] As Figure 1 , 2 shown, in an alternative embodiment of the present application, the longitudinal sealing device and the filling device are respectively driven by different driving mechanisms.

[0020] The filling device can fill 2 - 20 soft packaging containers at a time.

[0021] As Figure 3 , 4 shown, in an alternative embodiment of the present application, the filling device can fill 6 soft packaging containers at a time.

[0022] As Figure 1 shown, the longitudinal sealing device and the filling device are respectively installed on the frame 1; the filling device includes a support mechanism, a hopper 4, and a liquid filling mechanism 5. The support mechanism is installed on the frame 1, and the hopper 4 and the liquid filling mechanism 5 are respectively installed on the support mechanism.

[0023] As Figure 5 shown, the support mechanism is a support frame 12. The support frame 12 is installed on the frame 1, the hopper 4 and the liquid filling mechanism 5 are respectively installed on the support frame 12, and the longitudinal sealing device 6 rotates intermittently around the support frame 12. When the longitudinal sealing device 6 stops moving, the liquid filling mechanism 5 completes the filling work.

[0024] As Figure 2As shown in the figure, in an alternative embodiment of the present application, the support mechanism includes a rotating frame 2 and a rotating frame driving mechanism 3. The rotating frame 2 is rotatably mounted on the frame 1. A hopper 4 and a liquid filling mechanism 5 are respectively mounted on the rotating frame 2. The rotating frame driving mechanism 3 is mounted on the frame 1. The rotating frame driving mechanism 3 uses a first driving unit 301 to drive the rotating frame 2 to rotate through a first gear transmission unit 302 (continuously rotating), which can simplify the structure of the driving unit and reduce the loss of energy during transmission.

[0025] As Figure 6 , 7 As shown in the figure, in an alternative embodiment of the present application, the support mechanism includes a positioning frame 13, a rotating frame 2, and a rotating frame driving mechanism 3. The positioning frame 13 is mounted on the frame 1. The rotating frame 2 is rotatably mounted on the frame 1. The rotating frame driving mechanism 3 is mounted on the frame 1 and the rotating frame driving mechanism 3 drives the rotating frame 2 to rotate. The hopper 4 and the liquid filling mechanism 5 are respectively mounted on the positioning frame 13. The rotating frame driving mechanism 3 includes a first driving unit 301 and a first gear transmission unit 302. The first driving unit 301 is mounted on the frame 1 and the first driving unit 301 drives the rotating frame 2 to rotate through the first gear transmission unit 302. Using the first driving unit 301 to drive the rotating frame 2 to rotate through the first gear transmission unit 302 (there is only one gear in this embodiment) can simplify the structure of the driving unit and reduce the loss of energy during transmission.

[0026] As Figure 3 , 4 As shown in the figure, in an alternative embodiment of the present application, the liquid filling mechanism 5 includes a liftable platform 501, a lifting unit 502, a controllable reversing valve 503, a telescopic device 504, a plurality of filling heads 505, and a plurality of material pumps 506. The lifting unit 502 is mounted on the support mechanism. The lifting unit 502 has a lifting action end that can move in the vertical direction. The liftable platform 501 is mounted on the lifting action end. All the filling heads 505 are respectively mounted on the liftable platform 501. The controllable reversing valve 503 and a plurality of material pumps 506 are respectively mounted on the support mechanism. The three ports of the controllable reversing valve 503 are respectively connected to the hopper 4, all the material pumps 506, and all the filling heads 505. The number of the filling heads 505 and the material pumps 506 is the same, corresponding one by one and cooperating with each other. The controllable reversing valve 503 has a rotatable valve core (invisible in the figure). One end of the rotatable valve core is provided with a control swing rod 5031. The rear end of the telescopic device 504 is hinged to the support mechanism. The action end of the telescopic device 504 is connected to the control swing rod 5031.

[0027] As Figure 2 , 3 As shown in the figure, in an alternative embodiment of the present application, the telescopic device 504 is a cylinder.

[0028] In an alternative embodiment of the present application, the telescopic device 504 is an electric cylinder.

[0029] As Figure 3 shown, in an alternative embodiment of the present application, the lifting unit 502 is a pneumatic cylinder.

[0030] In an alternative embodiment of the present application, the lifting unit 502 is an electric cylinder.

[0031] As Figure 12 shown, in an alternative embodiment of the present application, the support mechanism includes a positioning frame 13, a rotating frame 2, and a rotating frame driving mechanism 3. The positioning frame 13 is installed on the machine frame 1, the rotating frame 2 is rotatably installed on the machine frame 1, the rotating frame driving mechanism 3 is a first cam-linkage transmission mechanism, the lifting unit 502 is a second cam-linkage transmission mechanism, and the third servo motor 14 drives the liftable platform 501 to lift through the lifting unit 502 (the second cam-linkage transmission mechanism), and the third servo motor 14 drives the rotating frame 2 to rotate through the rotating frame driving mechanism 3 (the first cam-linkage transmission mechanism).

[0032] As Figure 4 shown, in an alternative embodiment of the present application, the first gear transmission unit 302 includes an output gear 3021 and a passive gear 3022. The output gear 3021 is installed on the first output shaft of the first driving unit 301, and the passive gear 3022 is installed on the rotating shaft of the rotating frame 2. Figure 7 For the embodiment shown, Figure 8 the same applies to the embodiment shown.

[0033] As Figure 9 shown, in an alternative embodiment of the present application, the rotating frame driving mechanism 3 includes a first driving unit 301, a speed reducer 303, and a cam divider 304. Figure 11 the same applies to the embodiment shown.

[0034] As Figure 4 shown, in an alternative embodiment of the present application, the first driving unit 301 is a servo motor. Figure 9 the same applies to the embodiment shown.

[0035] In an alternative embodiment of the present application, the first driving unit 301 includes a servo motor and a speed reducer.

[0036] As Figure 2 shown, in an alternative embodiment of the present application, the rotating frame driving mechanism 3 is arranged at the bottom of the machine frame 1.

[0037] As Figure 4As shown, in an alternative embodiment of the present application, the rotary rack driving mechanism 3 is disposed in the middle of the rack 1.

[0038] As Figure 1 shown, in an alternative embodiment of the present application, in step a, the film feeding mechanism 7 feeds out the film, folds it in half and then sends it into the longitudinal sealing device. The film feeding mechanism 7 is installed on the rack 1 and the film feeding mechanism 7 is located on the lower side of the rack 1.

[0039] As Figure 1 shown, in an alternative embodiment of the present application, in step b, the sealing mechanism 8 seals the top opening of the soft packaging container that has completed filling, and in step c, the shearing mechanism 9 cuts to obtain the soft packaging finished product. The sealing mechanism 8 and the shearing mechanism 9 are respectively installed on the rack 1 and the sealing mechanism 8 and the shearing mechanism 9 are located outside the outlet of the longitudinal sealing device 6.

[0040] As Figure 1 shown, in an alternative embodiment of the present application, in step c, the bag conveying mechanism 10 conveys the soft packaging finished product, and in step d, the finished product discharging mechanism 11 discharges the soft packaging finished product. The bag conveying mechanism 10 and the finished product discharging mechanism 11 are respectively installed on the rack 1 and the bag conveying mechanism 10 and the finished product discharging mechanism 11 are located outside the sealing mechanism 8, and the bag conveying mechanism 10 is arranged above the finished product discharging mechanism 11.

[0041] In this embodiment, since the processing steps are improved, in one embodiment (such as the embodiment shown in Figure 2 , the embodiment shown in Figure 4 , the embodiment shown in Figure 6 , 7 , the embodiment shown in Figure 12 etc., not listed one by one), the longitudinal sealing device makes continuous uniform motion (along a closed circular curve located outside the rotary rack 2), and the longitudinal sealing device drives the soft packaging container to make continuous uniform motion, while the filling device only fills 6 soft packaging containers each time, greatly simplifying the structure of the filling device, greatly reducing the components of the filling device, and greatly reducing the equipment cost.

[0042] One embodiment (such as Figure 5As shown in the figure, the movement of the flexible packaging container is changed from continuous movement to intermittent movement, and the method of the longitudinal sealing device and the filling device cooperating with each other adopted in step a is improved, simplifying the structure of the liquid filling mechanism, enabling the filling device to only perform lifting movement. When the longitudinal sealing device stops (at this time, a batch of flexible packaging containers to be filled are located below the filling device), the filling device only fills one batch of flexible packaging containers at a time (filling 6 flexible packaging containers with liquid material each time for filling work). Therefore, the structure of the filling device is further optimized, and the components of the filling device are reduced, so that the purpose of cost reduction and efficiency improvement can be well achieved.

[0043] In addition, it should be noted that for the specific embodiments described in this specification, the names of their respective parts and the like may be different. Any equivalent or simple changes made according to the structure, features, and principles described in the inventive concept of this invention patent are included in the protection scope of this invention patent. Those skilled in the technical field to which this invention belongs can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the structure of this invention or exceed the scope defined by this claim book, they should all belong to the protection scope of this invention.

Claims

1. A method for packaging liquid materials, comprising the following steps: a. Making a flexible packaging container with an opening at the top and conveying the flexible packaging container, and filling the liquid material into the flexible packaging container during the conveying process; b. Sealing the opening at the top of the filled flexible packaging container; c. Cutting and conveying the flexible packaging finished product; d. Sending out the flexible packaging finished product; It is characterized in that: in step a, the filling device used for filling the liquid material always moves synchronously with the longitudinal sealing device in the horizontal direction during the whole process of filling the liquid material. The process of filling the liquid material includes the following actions in sequence: the filling device descends, inserts multiple filling heads and fills a batch of flexible packaging containers located in the longitudinal sealing device, after filling is completed, the filling device rises, lifts the multiple filling heads and separates them from this batch of flexible packaging containers that have been filled with the material. After the process of filling the liquid material is completed, the filling device and the longitudinal sealing device move relative to each other in the horizontal direction until the filling device is located above the next batch of flexible packaging containers waiting to be filled; the longitudinal sealing device drives all the flexible packaging containers to move intermittently or continuously in the horizontal direction.

2. The liquid material packaging method according to claim 1, characterized in that: In step a, a longitudinal sealing device is used to make multiple flexible packaging containers with openings at the top and convey the flexible packaging containers. The movement path of the longitudinal sealing device is a closed circular curve, and the filling device is located above the longitudinal sealing device.

3. The liquid material packaging method according to claim 2, wherein: The longitudinal sealing device moves intermittently. When the longitudinal sealing device stops moving, the filling device completes the work of filling the liquid material, and then the longitudinal sealing device moves and brings the next batch of flexible packaging containers waiting to be filled under the filling device.

4. The liquid material packaging method according to claim 2, characterized in that: The longitudinal sealing device moves continuously; when the filling device moves synchronously with the longitudinal sealing device, the filling device completes the work of filling the liquid material; after the work of filling the liquid material is completed, the filling device moves in the reverse direction to be located above the next batch of flexible packaging containers waiting to be filled.

5. The liquid material packaging method according to claim 3 or 4, characterized in that: The longitudinal sealing device and the filling device are respectively driven by different driving mechanisms.

6. The liquid material packaging method according to claim 5, wherein: The longitudinal sealing device and the filling device are respectively installed on the frame; the filling device includes a support mechanism, a hopper, and a liquid filling mechanism. The support mechanism is installed on the frame, and the hopper and the liquid filling mechanism are respectively installed on the support mechanism.

7. The liquid material packaging method according to claim 6, characterized in that: The support mechanism is a support frame, and the longitudinal sealing device rotates intermittently around the support frame. When the longitudinal sealing device stops moving, the liquid filling mechanism completes the filling work.

8. The liquid material packaging method according to claim 6, characterized in that: The support mechanism includes a rotating frame and a rotating frame driving mechanism. The rotating frame is rotatably installed on the frame. The hopper and the liquid filling mechanism are respectively installed on the rotating frame. The rotating frame driving mechanism is installed on the frame. The rotating frame driving mechanism uses a first driving unit to drive the rotating frame to rotate through a first gear transmission unit.

9. The liquid material packaging method according to claim 6, wherein: The support mechanism includes a positioning frame, a rotating frame, and a rotating frame driving mechanism. The positioning frame is installed on the frame, and the rotating frame is rotatably installed on the frame. The rotating frame driving mechanism is a first cam-linkage transmission mechanism, and the lifting unit is a second cam-linkage transmission mechanism. The third servo motor drives the liftable platform to lift and lower through the lifting unit, and the third servo motor drives the rotating frame to rotate through the rotating frame driving mechanism.

10. The liquid material packaging method according to any one of claims 6-9, characterized in that: The liquid filling mechanism includes a liftable platform, a lifting unit, a controllable reversing valve, a first cylinder, a plurality of filling heads, and a plurality of material pumps. The lifting unit is installed on the support mechanism. The lifting unit has a lifting action end that can move in the vertical direction. The liftable platform is installed on the lifting action end. All the filling heads are respectively installed on the liftable platform. The controllable reversing valve and the plurality of material pumps are respectively installed on the support mechanism. The three ports of the controllable reversing valve are respectively connected to the hopper, all the material pumps, and all the filling heads. The number of the filling heads and the material pumps is the same, corresponding one by one and cooperating with each other. The controllable reversing valve has a rotatable valve core. One end of the rotatable valve core is installed with a control swing rod. The rear end of the first cylinder is hinged to the support mechanism. The first piston rod of the first cylinder is connected to the control swing rod.

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