An automatic outer bag to inner membrane system

Abstract

The application relates to the technical field of outer bag manufacturing, in particular to an outer bag automatic inner film sleeving system which comprises a inner film sleeving device and a control module, the inner film sleeving device comprises a platform and a rack arranged on the platform, a blowing device and an outer bag opening device are sequentially arranged on the rack, the blowing device comprises a plurality of blowing nozzles, the blowing nozzles are used for blowing the inner film into the outer bag, the plurality of blowing nozzles are divided into upper and lower rows, the inner film passes through the middle of the upper row of blowing nozzles and the lower row of blowing nozzles, each blowing nozzle is connected with a gas pump through a pipeline, and the control module can control the blowing range of the blowing nozzles to adapt to outer bags of different sizes, and the application has the effect that the blowing range of the blowing nozzles can be adjusted according to outer bags of different sizes.

Description

Technical Field

[0001] This application relates to the field of outer bag manufacturing, and in particular to an automatic inner lining system for outer bags. Background Technology

[0002] Currently, outer bags made of woven materials (such as woven bags) are widely used in the transportation and storage of products such as chemical raw materials, grains, feed, and building materials due to their advantages such as high strength and low cost.

[0003] For items requiring protection against moisture, dust, or external contamination (such as fertilizers, food additives, and precision instrument parts), an inner liner (made of a plastic film) is typically placed inside the outer bag. Therefore, developing efficient and stable automatic inner liner systems for outer bags has become an inevitable trend in the packaging industry. Related technologies for automatic inner liner systems generally employ fixed air nozzles to blow the unfolded inner liner into the open outer bag, completing the inner liner process.

[0004] The aforementioned technologies have the drawback of having a fixed blowing range for the blowing device, which cannot flexibly adapt to outer bags of different sizes. Utility Model Content

[0005] In order to adjust the blowing range of the blowing device to accommodate outer bags of different sizes, this application provides an automatic inner film application system for outer bags.

[0006] The technical solution of the automatic inner lining system for outer bags provided in this application is as follows:

[0007] The inner film packaging device includes a platform and a frame mounted on the platform. An air blowing device and an outer bag opening device are sequentially mounted on the frame. The air blowing device includes multiple air nozzles for blowing the inner film into the outer bag. The multiple air nozzles are arranged in two rows, and the inner film passes through the middle between the upper row of air nozzles and the lower row of air nozzles. Each air nozzle is connected to an air pump through a pipeline.

[0008] The control module, electrically connected to the blowing device, is used to control the range of air blowing from the nozzle to accommodate outer bags of different sizes.

[0009] By adopting the above technical solution, the control module dynamically adjusts the blowing range of the air blowing device to adapt to the outer bags of different sizes (such as small bags for concentrated airflow and large bags for expanded coverage), thus solving the compatibility problem caused by the fixed blowing range of traditional equipment.

[0010] Optionally, each of the pipelines is equipped with a solenoid valve; the control module is electrically connected to the solenoid valve and is used to control the number of times the solenoid valve is opened and closed to adjust the range of air blowing from the nozzle.

[0011] By adopting the above technical solution, only some of the solenoid valves are opened for small-sized outer bags to concentrate the airflow intensity, while more of the solenoid valves are opened for large-sized outer bags to expand the coverage area and flexibly adapt to outer bags of different sizes.

[0012] Optionally, each of the air nozzles is equipped with a servo motor; the control module is electrically connected to the servo motor and is used to control the angle of air blowing from the air nozzle to control the range of air blowing from the air nozzle.

[0013] By adopting the above technical solution, the servo motor adjusts the angle of the air nozzle according to the size of the outer bag, reducing the number of air nozzles and lowering the complexity and failure rate of the equipment.

[0014] Optionally, the outlet of the air nozzle has a built-in honeycomb-shaped flow guide structure, which disperses the concentrated airflow into a uniform laminar flow.

[0015] By adopting the above technical solution, the airflow blown out by the nozzle is dispersed into a uniform and stable laminar flow, avoiding turbulent impact that could cause the inner membrane to rupture. Furthermore, the uniform laminar flow makes it easier for the inner membrane to unfold and adhere to the inner wall of the outer bag.

[0016] Optionally, the control module is electrically connected to the air pump and is used to adjust the air pressure of the air pump output gas according to the material of the outer bag.

[0017] By adopting the above technical solution, the air pump can adjust the pressure of the output gas according to the outer bag of different materials, so as to avoid the outer bag from breaking due to excessive pressure.

[0018] Optionally, the outer bag opening device includes a longitudinal cylinder, an upper horizontal plate, and a lower horizontal plate. The upper horizontal plate is connected to the guide rail via the longitudinal cylinder, and the lower horizontal plate is fixed on the platform. Both the upper and lower horizontal plates are provided with multiple negative pressure ports, which are connected to the vacuum pump and used to adsorb the outer side of the outer bag near the bag opening to open the bag opening.

[0019] By adopting the above technical solution, the upper and lower horizontal plates simultaneously adsorb the outer bag, ensuring that the bag opening of the outer bag opens symmetrically.

[0020] Optionally, the frame is further provided with a guide rail, and the guide rail is provided with a positioning device. The positioning device is used to guide the inner film that is passing through the outer bag to a preset position. The positioning device includes an upper support frame, a lower support frame, and a transverse cylinder. The upper support frame is disposed on the guide rail, and the lower support frame is connected to the upper support frame through the transverse cylinder. The lower support frame is provided with multiple telescopic air rods, and the ends of the telescopic air rods are provided with rubber pads. The rubber pads are used to contact one end of the inner film that is passing through the outer bag and generate friction so that the inner film that is passing through the outer bag is guided to the preset position by the contraction of the transverse cylinder. An inner film cutting device is also provided on the frame between the air blowing device and the outer bag opening device. The inner film cutting device is used to cut the inner film after one end of the inner film is guided to the preset position by the positioning device.

[0021] By adopting the above technical solution, the rubber pad flexibly contacts one end of the inner membrane that passes through the outer bag and generates frictional force, ensuring that the inner membrane is pulled to the preset position without damage. After the positioning process is completed, the inner membrane cutting device immediately cuts the inner membrane, and the process is integrated and efficient.

[0022] Optionally, the control module is electrically connected to the inner membrane cutting device, the longitudinal cylinder, the vacuum pump, the transverse cylinder, and the telescopic rod, respectively.

[0023] By adopting the above technical solution, the control module accurately controls each component to perform the processing program in sequence, resulting in a high degree of automation.

[0024] Optionally, a limiting plate is also provided on the frame. The limiting plate is used to limit the size of the expansion of the outer bag. The distance between the limiting plate and the platform is adjustable to accommodate different sizes of the outer bags.

[0025] By adopting the above technical solution, the limiting plate physically limits the outer bag, preventing the outer bag from expanding beyond its limit, and the distance between the limiting plate and the platform can be adjusted according to the size of the outer bag, making it more adaptable.

[0026] Optionally, the outer bag inner film packaging system further includes an outer bag unwinding device, an outer bag cutting device, an outer bag conveying device, an inner film unwinding device, and a conveying device. The outer bag unwinding device is connected to the outer bag cutting device, the outer bag cutting device is connected to the outer bag conveying device, the outer bag conveying device is connected to the inner film packaging device, the inner film unwinding device is connected to the inner film packaging device, the input end of the conveying device is connected to the inner film packaging device, the conveying device is equipped with an automatic sewing machine, the automatic sewing machine is used to seal one end of the outer bag covered with the inner film, and the output end of the conveying device is equipped with a flipping and stacking device.

[0027] By adopting the above technical solutions, the entire process from raw materials to finished product stacking is covered, greatly improving efficiency. The automatic sewing machine ensures the consistency of sealing, and the flipping stacking device stacks neatly, saving labor.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The control module dynamically adjusts the blowing range of the air blowing device to adapt to outer bags of different sizes (such as concentrated airflow for small bags and expanded coverage for large bags), solving the compatibility problem caused by the fixed blowing range of traditional equipment;

[0030] 2. For small-sized outer bags, only some of the solenoid valves are opened to concentrate the airflow intensity; for large-sized outer bags, more of the solenoid valves are opened to expand the coverage area, flexibly adapting to outer bags of different sizes.

[0031] 3. The servo motor adjusts the angle of the air nozzle according to the size of the outer bag, reducing the number of air nozzles and lowering the complexity and failure rate of the equipment;

[0032] 4. The airflow blown out by the air nozzle is dispersed into a uniform and stable laminar flow, which avoids turbulent flow impact that could cause the inner membrane to rupture. Furthermore, the uniform laminar flow makes it easier for the inner membrane to unfold and adhere to the inner wall of the outer bag. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the automatic inner film covering system for outer bags according to Embodiment 1 of this application;

[0034] Figure 2 This is a schematic diagram of the inner film covering device in the automatic inner film covering system of the outer bag according to Embodiment 1 of this application;

[0035] Figure 3 yes Figure 2 Enlarged view of area A in the middle;

[0036] Figure 4 yes Figure 2 A schematic diagram of the inner membrane device from another angle;

[0037] Figure 5 yes Figure 4 Enlarged diagram of area B in the middle;

[0038] Figure 6 yes Figure 2 Schematic diagram of the structure of the air inlet nozzle;

[0039] Figure 7 This is a schematic diagram of the inner film covering device in the automatic inner film covering system of the outer bag according to Embodiment 2 of this application;

[0040] Figure 8 yes Figure 7 Enlarged diagram of area C.

[0041] Explanation of reference numerals in the attached drawings: 10. Outer bag unwinding device; 20. Outer bag cutting device; 30. Outer bag conveying device; 40. Inner film unwinding device; 50. Inner film attaching device; 51. Platform; 52. Frame; 53. Guide rail; 54. Air blowing device; 54a. Air blowing nozzle; 54b. Honeycomb flow guiding structure; 54c. Pipeline; 54d. Air pump; 54e. Solenoid valve; 54f. Servo motor; 55. Inner film cutting device; 5 6. Outer bag opening device; 56a. Longitudinal cylinder; 56b. Upper horizontal plate; 56c. Lower horizontal plate; 56d. Negative pressure port; 56e. Vacuum pump; 57. Limiting plate; 58. Positioning device; 58a. Upper support frame; 58b. Lower support frame; 58c. Transverse cylinder; 58d. Telescopic air rod; 58f. Rubber pad; 60. Conveying device; 61. Automatic sewing machine; 62. Flipping and stacking device; 70. Control module. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0043] This application discloses an automatic inner lining system for outer bags.

[0044] Example 1

[0045] Reference Figure 1 The automatic outer bag inner film application system includes an outer bag unwinding device 10, an outer bag cutting device 20, an outer bag conveying device 30, an inner film unwinding device 40, an inner film application device 50, a conveying device 60, and a control module 70.

[0046] The outer bag unwinding device 10 is connected to the outer bag cutting device 20, the outer bag cutting device 20 is connected to the outer bag conveying device 30, the outer bag conveying device 30 is connected to the inner film attaching device 50, the inner film unwinding device 40 is connected to the inner film attaching device 50, the inner film attaching device 50 is connected to the input end of the conveying device 60, and the control module 70 is used to control the operation of each component of the automatic outer bag inner film attaching system according to preset logic.

[0047] The conveying device 60 is equipped with an automatic sewing machine 61, which is used to seal one end of the outer bag covered with the inner film. The output end of the conveying device 60 is equipped with a flipping and stacking device 62, which is used to neatly stack the processed outer bags.

[0048] Reference Figure 2 , Figure 3 and Figure 4The inner film device 50 includes a platform 51 and a frame 52 mounted on the platform 51. The frame 52 can be fixed to the platform 51 by welding or bolting. The frame 52 is provided with an air blowing device 54, an inner film cutting device 55, an outer bag opening device 56, and a guide rail 53 in sequence.

[0049] The air blowing device 54 includes multiple air nozzles 54a, each of which is connected to an air pump 54d via a conduit 54c. The conduit 54c is typically made of rubber or plastic, possessing a certain degree of flexibility and corrosion resistance. The air pump 54d is electrically connected to the control module 70 and is used to adjust the air pressure of the gas blown from the air nozzles 54a according to the material of the outer bag. Each conduit 54c is equipped with a solenoid valve 54e. The solenoid valve 54e is electrically connected to the control module 70 and is used to control the number of air nozzles 54a that are operational.

[0050] The inner membrane cutting device 55 is electrically connected to the control module 70 and is used to cut the inner membrane when the inner membrane reaches a preset position.

[0051] The outer bag opening device 56 includes a longitudinal cylinder 56a, an upper horizontal plate 56b, a lower horizontal plate 56c, and a negative pressure port 56d. The upper horizontal plate 56b and the lower horizontal plate 56c are generally made of aluminum alloy, which is lightweight and high-strength. The upper horizontal plate 56b is connected to the frame 52 via the longitudinal cylinder 56a, and the lower horizontal plate 56c is fixed to the platform 51. Multiple negative pressure ports 56d are evenly distributed on the upper horizontal plate 56b and the lower horizontal plate 56c, and each negative pressure port 56d is connected to a vacuum pump 56e.

[0052] The longitudinal cylinder 56a and the vacuum pump 56e are electrically connected to the control module 70, respectively, and are used to control the extension and retraction of the longitudinal cylinder 56a and to control whether the negative pressure port 56d generates negative pressure.

[0053] The frame 52 is also provided with a limiting plate 57, which is used to limit the size of the expansion of the outer bag. The distance between the limiting plate 57 and the platform 51 is adjustable to accommodate different sizes of the outer bags.

[0054] Reference Figure 5 The guide rail 53 is provided with a positioning device 58, which includes an upper support frame 58a, a lower support frame 58b and a transverse cylinder 58c.

[0055] The upper support frame 58a is mounted on the guide rail 53. The lower support frame 58b is connected to the upper support frame 58a via the transverse cylinder 58c. The lower support frame 58b is provided with a telescopic air rod 58d. The end of the telescopic air rod 58d is provided with a rubber pad 58f. The rubber pad 58f is used to contact one end of the inner membrane passing through the outer bag and generate friction.

[0056] The transverse cylinder 58c and the telescopic air rod 58d are electrically connected to the control module 70, respectively. The telescopic air rod 58d is used to extend so that the rubber pad 58f contacts one end of the inner membrane passing through the outer bag and generates friction. Then, the transverse cylinder 58c is contracted to guide one end of the inner membrane passing through the outer bag to a preset position.

[0057] Reference Figure 6 The opening of the air nozzle 54a has a built-in honeycomb-shaped flow guide structure 54b, which is used to divide the concentrated airflow into laminar flow. The honeycomb-shaped flow guide structure 54b is generally made of porous ceramic or metal material, and its internal pores are arranged in a regular pattern. This structure can effectively disperse the concentrated airflow, avoid turbulent impact that could cause the inner membrane to rupture, and the uniform airflow makes the inner membrane easier to unfold and adhere to the inner wall of the outer bag.

[0058] The operation steps of the automatic inner lining system for outer bags are as follows:

[0059] S1. The outer bag unwinding device 10 transfers the outer bag to the outer bag cutting device 20.

[0060] S2. The outer bag cutting device 20 cuts the outer bag according to the preset length of the outer bag, and the outer bag conveying device 30 conveys the cut outer bag to the inner film device 50.

[0061] S3. The outer bag opening device 56 opens the bag opening at one end of the outer bag (the control module 70 controls the longitudinal cylinder 56a to extend until the upper horizontal plate 56b contacts the outer bag, then the control module 70 controls the vacuum pump 56e to run to generate negative pressure at the negative pressure port 56d, and then the control module 70 controls the longitudinal cylinder 56a to retract to open the bag opening of the outer bag).

[0062] S4. The inner film unwinding device 40 transmits the inner film between the upper row of air nozzles 54a and the lower row of air nozzles 54a. The control module 70 adjusts the pressure of the gas output by the air pump 54d according to the material of the outer bag and controls the solenoid valve 54e to open. Then, the upper and lower rows of air nozzles 54a blow the inner film into the opening of the outer bag.

[0063] S5. The positioning device 58 guides one end of the inner membrane that is protruding from the outer bag to a preset position (the control module 70 controls the horizontal cylinder 58c to extend, controls the telescopic rod 58d to extend until the rubber pad 58f contacts one end of the inner membrane to generate friction, and then the control module 70 controls the horizontal cylinder 58c to retract to guide one end of the inner membrane to the preset position).

[0064] S6. The control module 70 controls the inner membrane cutting device 55 to cut the inner membrane.

[0065] S7. The control module 70 controls the air nozzle 54a to close and controls the vacuum pump 56e to close.

[0066] S8. The outer bag covered with the inner membrane is conveyed to the conveying device 60. The automatic sewing machine 61 on the conveying device 60 seals one end of the outer bag covered with the inner membrane. Then, it is conveyed to the flipping and stacking device 62 via the conveying device 60. The flipping and stacking device 62 flips the processed outer bag and stacks it.

[0067] The implementation principle of Example 1 is as follows: for small-sized outer bags, only some of the solenoid valves 54e are opened to concentrate the airflow intensity; for large-sized outer bags, more of the solenoid valves 54e are opened to expand the coverage area and flexibly adapt to outer bags of different sizes.

[0068] Example 2

[0069] Reference Figure 7 and Figure 8 The difference between this embodiment and embodiment 1 is that the air nozzle 54a is provided with a servo motor 54f, which is electrically connected to the control module 70 and is used to adjust the angle of the air nozzle 54a according to the size of the outer bag.

[0070] The implementation principle of Example 2 is as follows: Compared with Example 1, Example 2 adjusts the angle of the air nozzle 54a by the servo motor 54f according to the outer bag of different sizes, thereby reducing the number of air nozzles 54a and reducing the complexity and failure rate of the equipment.

[0071] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic outer bag to inner membrane system characterized by, include: The inner film device (50) includes a platform (51) and a frame (52) on the platform (51). The frame (52) is provided with an air blowing device (54) and an outer bag opening device (56) in sequence. The air blowing device (54) includes a plurality of air blowing nozzles (54a). The air blowing nozzles (54a) are used to blow the inner film into the outer bag. The plurality of air blowing nozzles (54a) are divided into upper and lower rows. The inner film passes through the middle between the upper row of air blowing nozzles (54a) and the lower row of air blowing nozzles (54a). Each air blowing nozzle (54a) is connected to an air pump (54d) through a pipe (54c). The control module (70), electrically connected to the blowing device (54), is used to control the range of air blowing by the blowing nozzle (54a) to accommodate the outer bag of different sizes.

2. The automatic inner film covering system for outer bags according to claim 1, characterized in that, Each of the pipelines (54c) is equipped with a solenoid valve (54e); the control module (70) is electrically connected to the solenoid valve (54e) and is used to control the number of times the solenoid valve (54e) is opened and closed in order to control the range of air blowing from the air nozzle (54a).

3. The automatic inner film covering system for outer bags according to claim 1, characterized in that, Each of the air nozzles (54a) is equipped with a servo motor (54f); the control module (70) is electrically connected to the servo motor (54f) and is used to control the angle of the air blowing from the air nozzle (54a) to control the range of air blowing from the air nozzle (54a).

4. The automatic inner film covering system for outer bags according to claim 1, characterized in that, The outlet of the air nozzle (54a) has a built-in honeycomb flow guide structure (54b) that disperses the concentrated airflow into a uniform laminar flow.

5. The automatic outer bag inner film attaching system according to claim 1, characterized in that, The control module (70) is electrically connected to the air pump (54d) and is used to adjust the air pressure of the air pump (54d) according to the material of the outer bag.

6. The automatic inner film covering system for outer bags according to claim 1, characterized in that, The outer bag opening device (56) includes a longitudinal cylinder (56a), an upper horizontal plate (56b) and a lower horizontal plate (56c). The upper horizontal plate (56b) is connected to the frame (52) through the longitudinal cylinder (56a). The lower horizontal plate (56c) is fixed on the platform (51). Both the upper horizontal plate (56b) and the lower horizontal plate (56c) are provided with multiple negative pressure ports (56d). The negative pressure ports (56d) are connected to a vacuum pump (56e) and are used to adsorb the outer side of the outer bag near the bag opening to open the bag opening.

7. The automatic inner film covering system for outer bags according to claim 6, characterized in that, The frame (52) is also provided with a guide rail (53), and the guide rail (53) is provided with a positioning device (58). The positioning device (58) is used to guide the inner film that has passed through the outer bag to a preset position. The positioning device (58) includes an upper support frame (58a), a lower support frame (58b), and a transverse cylinder (58c). The upper support frame (58a) is located on the guide rail (53), and the lower support frame (58b) is connected to the upper support frame (58a) through the transverse cylinder (58c). The lower support frame (58b) is provided with a plurality of telescopic air rods (58d). The end of the telescopic air rod (58d) is provided with a rubber pad (58f), which is used to contact one end of the inner membrane that protrudes from the outer bag and generate friction to guide the inner membrane that protrudes from the outer bag to a preset position by the contraction of the transverse cylinder (58c); an inner membrane cutting device (55) is also provided on the frame (52) between the air blowing device (54) and the outer bag opening device (56), which is used to cut the inner membrane after one end of the inner membrane is guided to the preset position by the positioning device (58).

8. The automatic inner film covering system for outer bags according to claim 7, characterized in that, The control module (70) is electrically connected to the inner membrane cutting device (55), the longitudinal cylinder (56a), the vacuum pump (56e), the transverse cylinder (58c), and the telescopic rod (58d), respectively.

9. The automatic inner film covering system for outer bags according to claim 1, characterized in that, A limiting plate (57) is also provided on the frame (52). The limiting plate (57) is used to limit the size of the expansion of the outer bag. The distance between the limiting plate (57) and the platform (51) is adjustable to accommodate different sizes of the outer bag.

10. The automatic outer bag inner film covering system according to claim 1, characterized in that, It also includes an outer bag unwinding device (10), an outer bag cutting device (20), an outer bag conveying device (30), an inner film unwinding device (40), and a conveying device (60). The outer bag unwinding device (10) is connected to the outer bag cutting device (20), the outer bag cutting device is connected to the outer bag conveying device (30), the outer bag conveying device (30) is connected to the inner film covering device (50), the inner film unwinding device (40) is connected to the inner film covering device (50), the input end of the conveying device (60) is connected to the inner film covering device (50), the conveying device (60) is equipped with an automatic sewing machine (61), the automatic sewing machine (61) is used to seal one end of the outer bag covered with the inner film, and the output end of the conveying device (60) is equipped with a flipping stacking device (62).

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