A feeding and forming device for a center-sealing bag making machine

Abstract

This utility model discloses a feeding and forming device for a center-sealing bag making machine, belonging to the technical field of bag making machines. It includes an extruder, with a feeding hopper at the top and a feeding mechanism on the side of the hopper. A heat-drying mechanism is located at the top of the feeding mechanism. A support frame is fixedly connected to the top of the inner cavity of the feeding hopper, and a first motor is fixedly mounted on the top surface of the support frame. In this utility model, through the coordinated use of the first motor, stirring rod, stirring plate, and spiral conveyor rod, the first motor drives the stirring rod, stirring plate, and spiral conveyor rod to rotate. The stirring plate agitates the granular plastic in the inner cavity of the feeding hopper, and the spiral conveyor rod uniformly feeds the granular plastic from the feeding hopper into the extruder, ensuring the uniformity of the molten plastic in the extruder and thus guaranteeing the quality of tubular film processing.

Description

Technical Field

[0001] This utility model relates to the field of bag making machine technology, and more specifically, to a feeding and forming device for a center-sealing bag making machine. Background Technology

[0002] A center-seal bag making machine is a type of equipment used to produce center-seal bags. It is mainly used for packaging granular and powdery materials such as cement, chemical raw materials, fertilizers, and grains. This equipment is usually composed of various types of machine bases, using PP plastic woven fabric or three-in-one paper-plastic woven fabric and paper bag paper as the base material. The process involves feeding, printing, lining, gluing, tube forming, edge sealing, bag cutting, conveying, paper stacking, and counting.

[0003] PP woven plastic coated fabric or three-in-one paper-plastic woven fabric is produced through blow molding. Film blow molding involves extruding molten plastic into a film preform using an extruder, then blowing compressed air into the preform from the center of the die head. This forces the preform to expand and deform at high temperature, transforming it into a tubular film. The tubular film moves under traction to the herringbone plate and is then compressed and bound together. It then passes through traction rollers and guide rollers to the take-up roller, where it is wound into a film product. This process requires continuous feeding of granular plastic into the blow molding machine. However, existing feeding equipment is not conducive to uniform feeding, affecting the quality of film processing, and it is also difficult to remove moisture from the granular plastic, which can affect the forming of plastic bags. Therefore, we propose a feeding and forming device for a center-seal bag making machine. Utility Model Content

[0004] In view of the problems existing in the above-mentioned background technology, the purpose of this utility model is to provide a feeding and forming device for a center-sealing bag making machine.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A feeding and forming device for a center-sealing bag making machine includes an extruder. A feeding hopper is located at the top of the extruder, and a feeding mechanism is located on the side of the feeding hopper. A heat-drying mechanism is located at the top of the feeding mechanism. A support frame is fixedly connected to the top of the inner cavity of the feeding hopper. A first motor is fixedly mounted on the top surface of the support frame. The output shaft of the first motor extends into the inner cavity of the feeding hopper and is fixedly connected to a stirring rod via a coupling. A spiral conveying rod is fixedly connected to the bottom end of the stirring rod. The side of the spiral conveying rod is in contact with the inner wall at the bottom end of the inner cavity of the feeding hopper. Multiple stirring plates are fixedly connected to the side of the stirring rod.

[0007] As a preferred embodiment of this utility model, the feeding mechanism includes a feeding frame fixedly connected to the side of the feeding hopper. Two drive rollers are rotatably connected to the inner side of the feeding frame. A conveyor belt is connected between the two drive rollers. Multiple partitions are fixedly connected to the outer side of the conveyor belt. A second motor is fixedly installed on the outer side of the feeding frame. The output shaft of the second motor is connected to the end of a drive roller through a coupling.

[0008] As a preferred embodiment of this utility model, the feeding mechanism includes a blower box fixedly connected to the top surface of the feeding rack, a plurality of blower fans are fixedly installed on the top of the blower box, and a plurality of electric heating tubes are provided in the inner cavity of the blower box.

[0009] As a preferred embodiment of this utility model, a feeding hopper is fixedly connected to the top surface of the bottom end of the feeding rack.

[0010] In a preferred embodiment of this utility model, the inner wall of the feeding rack is in contact with the sides of the conveyor belt and the partition.

[0011] As a preferred embodiment of this utility model, a control panel is fixedly installed on the outside of the feeding rack, and the control panel is electrically connected to the second motor, the first motor, the blower fan and the heating element.

[0012] The advantages of this utility model are:

[0013] (1) In this utility model, by using the first motor, stirring rod, stirring plate and spiral conveying rod together, the first motor drives the stirring rod, stirring plate and spiral conveying rod to rotate, the stirring plate stirs the granular plastic in the inner cavity of the injection hopper, and the spiral conveying rod feeds the granular plastic in the injection hopper into the extruder at a uniform speed, so as to ensure the uniformity of the molten plastic in the extruder, thereby ensuring the quality of tubular film processing.

[0014] (2) In this utility model, the second motor drives the conveyor belt to rotate and feed the granular plastic from a low position into the feeding hopper. In addition, the electric heating tube is energized to generate heat, and the blower blows air downwards. The electric heating tube heats the air and heats the granular plastic on the conveyor belt, so that the water in the granular plastic is dispersed and the moisture in the granular plastic is prevented from affecting the production quality of the film. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the feeding rack of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the stirring plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the conveyor belt structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the heat drying mechanism of this utility model.

[0020] Explanation of the labels in the diagram:

[0021] 1. Extruder; 2. Feeding hopper; 3. Feeding mechanism; 4. Hot drying mechanism; 5. Support frame; 6. First motor; 7. Stirring rod; 8. Stirring plate; 9. Spiral conveyor rod; 10. Feeding rack; 11. Drive roller; 12. Conveyor belt; 13. Partition plate; 14. Second motor; 15. Blower box; 16. Blower fan; 17. Heating element; 18. Control panel; 19. Feeding hopper. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example:

[0026] Please see Figure 1-5A feeding and forming device for a center-sealing bag making machine includes an extruder 1, an injection hopper 2 at the top of the extruder 1, a feeding mechanism 3 on the side of the injection hopper 2, a heat drying mechanism 4 at the top of the feeding mechanism 3, a support frame 5 fixedly connected to the top of the inner cavity of the injection hopper 2, a first motor 6 fixedly installed on the top surface of the support frame 5, the output shaft of the first motor 6 extending into the inner cavity of the injection hopper 2 and fixedly connected to a stirring rod 7 via a coupling, a spiral conveying rod 9 fixedly connected to the bottom end of the stirring rod 7, the side of the spiral conveying rod 9 fitting against the inner wall at the bottom end of the inner cavity of the injection hopper 2, and multiple stirring plates 8 fixedly connected to the side of the stirring rod 7.

[0027] In this embodiment, the end of the extruder 1 is connected to the die head of the film blow molding machine. The molten plastic in the extruder 1 enters the die head for blowing and deformation, thereby becoming a tubular film.

[0028] For details, please refer to Figure 1 and Figure 5 The feeding mechanism 3 includes a feeding frame 10 fixedly connected to the side of the feeding hopper 2. Two drive rollers 11 are rotatably connected to the inner side of the feeding frame 10. A conveyor belt 12 is connected between the two drive rollers 11. Multiple partitions 13 are fixedly connected to the outer side of the conveyor belt 12. A second motor 14 is fixedly installed on the outer side of the feeding frame 10. The output shaft of the second motor 14 is connected to the end of a drive roller 11 through a coupling.

[0029] In this embodiment, a second motor 14 drives a drive roller 11 to rotate, and the drive roller 11 drives the conveyor belt 12 to rotate counterclockwise, so as to use the conveyor belt 12 to feed and transport granular plastic.

[0030] For details, please refer to Figures 1 to 4 The feeding mechanism 3 includes a blower box 15 fixedly connected to the top surface of the feeding rack 10. Multiple blower fans 16 are fixedly installed on the top of the blower box 15, and multiple electric heating tubes 17 are provided in the inner cavity of the blower box 15.

[0031] For details, please refer to Figure 1 The top surface of the bottom end of the feeding rack 10 is fixedly connected to the feeding hopper 19.

[0032] In this embodiment, the granular plastic to be fed is placed onto the conveyor belt 12 through the feeding hopper 19.

[0033] For details, please refer to Figure 1 , Figure 2 and Figure 4 The inner wall of the feeding rack 10 is in contact with the sides of the conveyor belt 12 and the partition 13.

[0034] In this embodiment, the inner wall of the feeding rack 10 is used to limit the sides of the conveyor belt 12 and the partition 13 to prevent the granular plastic conveyed on the conveyor belt 12 from falling off the sides of the conveyor belt 12.

[0035] For details, please refer to Figures 1 to 5 A control panel 18 is fixedly installed on the outside of the feeding rack 10. The control panel 18 is electrically connected to the second motor 14, the first motor 6, the blower 16 and the heating element 17.

[0036] In this embodiment, the control panel 18 is used to control the second motor 14, the first motor 6, the blower 16 and the heating element 17, and the power supply of the external device is used to power the control panel 18, the second motor 14, the first motor 6, the blower 16 and the heating element 17.

[0037] Working principle: In operation, the second motor 14 is first started to drive a drive roller 11 to rotate counterclockwise. The drive roller 11 then drives the conveyor belt 12 to rotate counterclockwise, so that granular plastic is fed from the hopper 19 into the second motor 14, allowing the granular plastic to be added onto the conveyor belt 12. The conveyor belt 12 conveys the granular plastic upwards. Then, the heating element 17 is energized to generate heat, and the fan 16 blows air downwards, which is heated by the heating element 17. The hot air heats the granular plastic on the conveyor belt 12, causing it to... The water in the granular plastic is dispersed, and then the granular plastic at the top of the conveyor belt 12 falls into the injection hopper 2. The first motor 6 is started to drive the stirring rod 7, stirring plate 8 and screw conveyor 9 to rotate. The stirring plate 8 is used to stir the granular plastic in the inner cavity of the injection hopper 2. The screw conveyor 9 feeds the granular plastic in the injection hopper 2 into the extruder 1 at a uniform speed. Finally, the extruder 1 is used to melt the granular plastic, and the extruder 1 is used to transport the molten plastic to the die head of the film blow molding machine for blowing and deformation, thereby processing a tubular film.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A feeding and forming device for a center-sealing bag making machine, comprising an extruder (1), characterized in that: The extruder (1) is provided with a feeding hopper (2) at the top, a feeding mechanism (3) is provided on the side of the feeding hopper (2), a heat drying mechanism (4) is provided on the top of the feeding mechanism (3), a support frame (5) is fixedly connected to the top of the inner cavity of the feeding hopper (2), a first motor (6) is fixedly installed on the top surface of the support frame (5), the output shaft of the first motor (6) extends to the inner cavity of the feeding hopper (2) and is fixedly connected to a stirring rod (7) through a coupling, a spiral conveying rod (9) is fixedly connected to the bottom end of the stirring rod (7), the side of the spiral conveying rod (9) is in contact with the inner wall of the bottom end of the inner cavity of the feeding hopper (2), and multiple stirring plates (8) are fixedly connected to the side of the stirring rod (7).

2. The feeding and forming device of a center-sealing bag making machine according to claim 1, characterized in that: The feeding mechanism (3) includes a feeding frame (10) fixedly connected to the side of the feeding hopper (2). Two drive rollers (11) are rotatably connected to the inner side of the feeding frame (10). A conveyor belt (12) is connected between the two drive rollers (11). Multiple partitions (13) are fixedly connected to the outer side of the conveyor belt (12). A second motor (14) is fixedly installed on the outer side of the feeding frame (10). The output shaft of the second motor (14) is connected to the end of a drive roller (11) through a coupling.

3. The feeding and forming device of a center-sealing bag making machine according to claim 2, characterized in that: The feeding mechanism (3) includes a blower box (15) fixedly connected to the top surface of the feeding rack (10). Multiple blower fans (16) are fixedly installed on the top of the blower box (15), and multiple electric heating tubes (17) are provided in the inner cavity of the blower box (15).

4. The feeding and forming device of a center-sealing bag making machine according to claim 2, characterized in that: The top surface of the bottom end of the feeding rack (10) is fixedly connected to the feeding hopper (19).

5. The feeding and forming device of a center-sealing bag making machine according to claim 2, characterized in that: The inner wall of the feeding rack (10) is in contact with the side of the conveyor belt (12) and the partition (13).

6. The feeding and forming device for a center-sealing bag making machine according to claim 3, characterized in that: A control panel (18) is fixedly installed on the outside of the feeding rack (10). The control panel (18) is electrically connected to the second motor (14), the first motor (6), the blower (16), and the heating element (17).

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