An automatic packing device and method for drawstring bags

Abstract

This application discloses an automatic packaging device and method for achieving automated packaging, reducing labor costs, and improving packaging efficiency. The application includes: a loading hopper, a storage component, a drawstring assembly, a drive module, and an opening assembly; a sliding rod is provided on one side of the loading hopper, and the drive module is fixed on the opposite side; both ends of the opening assembly are movably connected to the sliding rod and the drive module, respectively, and the drive module controls the opening assembly to move along the sliding rod; the storage component is located at the end of the drive module and fixed to the loading hopper, and is used to hold empty drawstring bags; the opening assembly cooperates with the storage component via a first electromagnet to open the bag opening; the drawstring assembly is fixed to the loading hopper, and a second electromagnet is provided on the drawstring assembly for attracting the drawstring, and the drawstring assembly is used to close the bag opening.

Description

Technical Field

[0001] This application relates to the field of automatic packaging equipment technology, and in particular to an automatic packaging device and method for drawstring bags. Background Technology

[0002] Drawstring bags, as a widely used packaging container, have become popular in many fields due to their unique design and convenience. These bags are typically made of durable materials such as canvas, nylon, or eco-friendly linen, and use one or more adjustable drawstrings for closure and carrying. Structurally, drawstring bags usually consist of a main bag body with an opening on the top or side for loading items. The drawstrings pass through eyelets or loops on either side of the opening, and the bag is closed by adjusting the tightness of the drawstrings.

[0003] Drawstring bags have a wide range of applications, including agriculture and outdoor activities. In agriculture, they can be used to pack fruits such as rice, chili peppers, and soybeans. Traditionally, fruits are often packed manually using drawstring bags. The harvested fruits are placed into the drawstring bags by hand, and then the bag opening is tied tightly by hand.

[0004] However, in the agricultural field, mechanized harvesting is often carried out, and relying solely on manual packing can no longer meet the needs of mechanized harvesting. Furthermore, manual packing consumes a lot of manpower and resources and is inefficient. Therefore, there is an urgent need for an automatic packing device for drawstring bags to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides an automatic packaging device and method for drawstring bags, which can achieve automated packaging, reduce labor costs, and improve packaging efficiency.

[0006] The technical solution provided in this application is described below:

[0007] The first aspect of this application provides an automatic packaging device for drawstring bags, wherein iron plates are fixed to the bag opening and the drawstring of the drawstring bag, and the automatic packaging device includes:

[0008] Hopper, storage assembly, nozzle assembly, drive module, and opening assembly;

[0009] A sliding rod is provided on one side of the hopper, and the drive module is fixed on the opposite side. The two ends of the opening assembly are movably connected to the sliding rod and the drive module, respectively. The drive module is used to control the opening assembly to move along the sliding rod.

[0010] The storage component is located at the end of the drive module and fixed on the hopper. The storage component is used to hold empty drawstring bags. The opening component cooperates with the storage component through a first electromagnet to open the bag opening.

[0011] The drawstring assembly is fixed on the hopper, and the drawstring assembly is provided with a second electromagnet for attracting the drawstring. The drawstring assembly is used to shrink the bag opening.

[0012] Optionally, the storage assembly includes a hanging bag plate, a guide rail, and a divider plate. The hanging bag plate is provided with an upwardly protruding top plate, the guide rail is fixed on the top plate, and the divider plate is movably connected to the guide rail.

[0013] The lower surface of the bag hanging plate is provided with an automatic bag feeding groove and a baffle plate. The baffle plate is aligned with the automatic bag feeding groove, and the automatic bag feeding groove is used to place the iron plate at the bag opening.

[0014] The partition plate is provided with an extension that extends downward through the bag hanging plate. The extension is located between the automatic bag feeding groove and the baffle plate. The extension is provided with a metal plate hole that is aligned with the opening of the automatic bag feeding groove.

[0015] Optionally, a spring is provided at the end of the automatic bag feeding groove, and the spring is used to push the iron plate to move towards the baffle.

[0016] Optionally, the automatic bag feeding trough is provided with an inlet for placing iron sheets.

[0017] Optionally, the opening assembly includes a horizontal plate, a moving block, and a slider. The moving block and the slider are respectively fixed at both ends of the horizontal plate. The slider is sleeved on the slide rod. The moving block is movably connected to a ball screw in the drive module. The drive module is used to drive the moving block to move through the ball screw.

[0018] The first electromagnet is provided on the horizontal plate, and the first electromagnet faces the storage component.

[0019] The partition plate is provided with a pulley bracket at its end, and a protrusion is provided on the horizontal plate. The protrusion is aligned with the pulley bracket and has an inclined surface.

[0020] Optionally, an infrared sensor is also provided on the cross plate.

[0021] Optionally, the cable tie assembly includes a rope take-up stepper motor, a drum, and a second electromagnet. An operation panel is provided on the hopper, the rope take-up stepper motor is fixed below the operation panel, the drum is connected to the rope take-up stepper motor, and the second electromagnet is fixed on the drum. The rope take-up stepper motor is used to control the rotation of the drum.

[0022] Optionally, the drum is provided with a winding plate, and the winding plate is provided with winding teeth that protrude outward from the surface of the drum.

[0023] Optionally, an openable door panel is provided on one side of the hopper, the door panel being on the same side as the spout assembly, and an electromagnetic lock is provided on the door panel.

[0024] The second aspect of this application provides an automatic packing method for drawstring bags, applicable to the automatic packing apparatus of the first aspect and any optional method thereof, comprising:

[0025] The metal pieces on both sides of the drawstring bag opening are placed into the automatic bag feeding groove of the bag hanging plate in sequence. The front metal piece is squeezed into the metal piece hole on the partition plate by the spring. The drawstring bag opening is provided with a front metal piece and a rear metal piece. The metal piece hole can accommodate one metal piece at a time.

[0026] The drive module controls the horizontal plate to move towards the bag hanging plate. When the protrusion on the horizontal plate presses the partition plate and moves towards the slide bar, the iron plate hole carries the front iron plate to the adsorption position, and the adsorption position is aligned with the first electromagnet on the horizontal plate.

[0027] The first electromagnet on the horizontal plate is controlled to attract the front iron sheet;

[0028] The drive module controls the horizontal plate to move away from the hanging bag plate, and the first electromagnet carries the front iron plate away from the rear iron plate of the drawstring bag, thereby opening the bag opening of the drawstring bag.

[0029] The second electromagnet in the drawstring assembly is controlled to attract the iron piece on the drawstring;

[0030] Material is filled into the drawstring bag along the bag opening. The fullness of the drawstring bag is detected by an infrared sensor. If the bag is full, filling is stopped.

[0031] The first electromagnet is controlled to release the front iron plate, and the horizontal plate is controlled to move towards the hanging bag plate by the drive module until the iron plate hole pushes the rear iron plate to the adsorption position.

[0032] The first electromagnet is controlled to attract the rear iron piece, and the horizontal plate is controlled to move away from the hanging bag plate through the drive module. After moving to the preset position, the first electromagnet is controlled to release the rear iron piece.

[0033] Controlling the rotation of the roller in the drawstring assembly to retract the drawstring and tighten the bag opening;

[0034] The electromagnetic lock on the control door panel is opened so that the tightened drawstring bag can be removed from the door panel.

[0035] As can be seen from the above technical solutions, this application has the following advantages:

[0036] The opening and storage components work together to open and release the drawstring bag's opening, facilitating material filling. The storage component enables automatic filling of empty drawstring bags. The drawstring assembly attracts the drawstring and retracts it to close the bag, completing the packaging process. Through the coordination of the opening component, drive module, storage component, drawstring assembly, and filling hopper, automated material packaging is achieved. Compared to manual packaging in existing technologies, this saves manpower and improves packaging efficiency. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of an automatic packaging device for drawstring bags according to this application;

[0039] Figure 2 This is another schematic diagram of an automatic packing device for drawstring bags according to this application;

[0040] Figure 3 This is a schematic diagram of the drawstring bag in this application;

[0041] Figure 4 This is a schematic diagram of an opening component in an automatic packing device for drawstring bags according to this application;

[0042] Figure 5 This is a schematic diagram of a drawstring assembly in an automatic packaging device for drawstring bags according to this application;

[0043] Figure 6 This is a schematic diagram of a storage component in an automatic packaging device for drawstring bags according to this application;

[0044] Figure 7 This is another schematic diagram of a component storage device for an automatic packaging apparatus for drawstring bags according to this application;

[0045] Figure 8 This is a schematic diagram of a divider plate in an automatic packaging device for drawstring bags according to this application;

[0046] Figure 9 This is a flowchart illustrating an automatic packaging method for drawstring bags according to this application;

[0047] In the diagram: 01 hopper, 02 storage assembly, 03 drawstring assembly, 04 drive module, 05 opening assembly, 06 slide bar, 07 first electromagnet, 08 second electromagnet, 09 hanging bag plate, 10 guide rail, 11 divider plate, 12 automatic bag feeding slot, 13 baffle plate, 14 extension, 15 iron sheet hole, 16 top plate, 17 iron sheet inlet, 18 horizontal plate, 19 moving block, 20 slider, 21 ball screw, 22 pulley bracket, 23 protrusion, 24 rope winding stepper motor, 25 drum, 26 operation panel, 27 winding plate, 28 door panel, 29 electromagnetic lock, 30 drawstring bag, 31 drive motor, 32 infrared sensor. Detailed Implementation

[0048] This application provides an automatic packaging device and method for drawstring bags, which enables automated packaging, reduces labor costs, and improves packaging efficiency. The specific implementation process of this application is described below.

[0049] Please see Figures 1 to 8 The first aspect of this application provides an automatic packaging device for drawstring bags, wherein iron plates are fixed to the bag opening and the drawstring respectively, and the automatic packaging device includes:

[0050] The hopper comprises a hopper 01, a storage component 02, a drawstring assembly 03, a drive module 04, and an opening component 05. A slide bar 06 is provided on one side of the hopper 01, and the drive module 04 is fixed on the opposite side. Both ends of the opening component 05 are movably connected to the slide bar 06 and the drive module 04, respectively. The drive module 04 controls the opening component 05 to move along the slide bar 06. The storage component 02 is located at the end of the drive module 04 and fixed to the hopper 01. The storage component 02 is used to hold empty drawstring bags 30. The opening component 05 cooperates with the storage component 02 via a first electromagnet 07 to open the bag opening. The drawstring assembly 03 is fixed to the hopper 01 and is equipped with a second electromagnet 08 for attracting the drawstring. The drawstring assembly 03 is used to close the bag opening.

[0051] This application presents a compact and efficient system that achieves an automated packaging process through the collaborative work of its components. The system mainly comprises five parts: a loading hopper 01, a storage component 02, a binding assembly 03, a drive module 04, and an opening assembly 05. These five parts are described in detail below:

[0052] The top of the hopper 01 is open, and storage component 02 and opening component 05 are respectively provided at both ends of the top. An empty drawstring bag 30 is placed in the storage component 02. The opening of the drawstring bag 30 is opened by the cooperation of the opening component 05 and the storage component 02. The hopper 01 is used to support the bottom of the drawstring bag 30.

[0053] A linear guide rod 06 is installed on one side of the hopper 01. This guide rod 06 is used to guide the linear movement of the opening assembly 05. A drive module 04 is provided on the other side. The ball screw 21 in the drive module 04 is arranged parallel to the guide rod 06. The surface of the guide rod 06 is smooth to reduce friction and wear.

[0054] The drive module 04 is fixed on the other side of the hopper 01, opposite to and parallel to the slide bar 06. The main function of the drive module 04 is to control the opening assembly 05 to reciprocate along the slide bar 06.

[0055] The two ends of the opening assembly 05 are connected to the slide bar 06 and the drive module 04, respectively. When the drive module 04 is activated, the opening assembly 05 is driven to move along the slide bar 06 to the front of the storage assembly 02, and the first electromagnet 07 is energized so that the first electromagnet 07 attracts the iron piece located on the opening of the drawstring bag 30 in the storage assembly 02. One side of the opening of the drawstring bag 30 is located in the storage assembly 02, and the other side is located on the opening assembly 05. At this time, the drive module 04 drives the opening assembly 05 to return away from the storage assembly 02, thereby opening the opening of the drawstring bag 30, making it easy to put materials into the drawstring bag 30 from the opening.

[0056] The storage component 02 is located at the end of the drive module 04 and is firmly fixed on the hopper 01. The storage component 02 is provided with an automatic bag feeding slot 12 for storing multiple empty drawstring bags 30. The automatic bag feeding slot 12 enables the automatic feeding of the drawstring bags 30.

[0057] The drawstring assembly 03 is connected to the hopper 01 and can be located below the slide bar 06. The drawstring assembly 03 is used to attract the drawstring on the drawstring bag 30 and shrink the bag opening by contracting the drawstring until the bag opening is tightly closed. The drawstring assembly 03 is equipped with a second electromagnet 08, and an iron piece is provided on the drawstring of the drawstring bag 30. When the opening assembly 05 and the storage assembly 02 cooperate to open the bag opening of the drawstring bag 30, the second electromagnet 08 of the drawstring assembly 03 is energized and attracts the iron piece on the drawstring. When the material falls into the opened drawstring bag 30 and accumulates to a certain amount, the opening assembly 05 and the storage assembly 02 cooperate to release the bag opening. At this time, the drawstring assembly 03 operates to tighten the drawstring, completing the shrinking and packaging of the bag opening.

[0058] In this application, the process of the drive module 04 controlling the opening assembly 05 to perform the first reciprocating movement is to open the drawstring bag 30. After the material is filled into the drawstring bag 30, the second reciprocating movement is performed. The process of the second reciprocating movement is to remove the other side of the bag opening from the storage assembly 02 for subsequent closure.

[0059] In an optional embodiment, the storage component 02 includes a hanging bag plate 09, a guide rail 10, and a partition plate 11. The hanging bag plate 09 is provided with an upwardly protruding top plate 16, the guide rail 10 is fixed on the top plate 16, and the partition plate 11 is movably connected to the guide rail 10. The lower surface of the hanging bag plate 09 is provided with an automatic bag feeding groove 12 and a baffle plate 13. The baffle plate 13 is aligned with the automatic bag feeding groove 12, and the automatic bag feeding groove 12 is used to place the iron piece at the bag opening. The partition plate 11 is provided with an extension 14, which penetrates downward through the hanging bag plate 09. The extension 14 is located between the automatic bag feeding groove 12 and the baffle plate 13. The extension 14 is provided with an iron piece hole 15, which is aligned with the opening of the automatic bag feeding groove 12.

[0060] The hanging plate 09 is used to suspend or support an empty drawstring bag 30. The hanging plate 09 is provided with an upwardly protruding top plate 16, which is parallel to the partition plate 11. The partition plate 11 is parallel to the opening assembly 05. By setting the top plate 16, the stability of the structure can be increased, and the guide rail 10 can be supported and fixed. After the partition plate 11 is controlled, it can slide smoothly along the guide rail 10.

[0061] The guide rail 10 is fixed to the top plate 16 of the hanging bag plate 09 and is used to guide the movement of the divider plate 11. By setting the guide rail 10, it is ensured that the divider plate 11 will not deviate from the predetermined track during movement. The divider plate 11 has an automatic reset function on the guide rail 10, which can be achieved by setting a spring. That is, when the divider plate 11 is subjected to force, it slides along the guide rail 10. After the force is removed, the divider plate 11 returns to its original position.

[0062] The lower surface of the bag hanging plate 09 is provided with an automatic bag feeding groove 12 and a baffle 13. The automatic bag feeding groove 12 is used to store empty drawstring bags 30. The baffle 13 is aligned with the automatic bag feeding groove 12. The distance between the baffle 13 and the groove opening of the automatic bag feeding groove 12 is greater than the thickness of a single iron sheet and less than the thickness of two iron sheets. The baffle 13 is used to temporarily block the iron sheet on the drawstring bag 30 during the bag feeding process to ensure that it is fixed in the correct position and to prevent the drawstring bag 30 from slipping or moving before it is properly fixed.

[0063] The partition plate 11 is movably connected to the guide rail 10 and can move horizontally along the guide rail 10. An extension 14 is provided on the partition plate 11, extending downwards through the bag hanging plate 09 and located between the automatic bag feeding groove 12 and the baffle 13. The extension 14 has a metal plate hole 15, which is aligned with the opening of the automatic bag feeding groove 12. Initially, the distance between the baffle 13 and the automatic bag feeding groove 12 is only large enough to accommodate a single metal plate. In actual use, the single metal plate is first embedded in the metal plate hole 15. When the partition plate 11 moves along the guide rail 10, the extension 14 moves accordingly, and the metal plate moves out with the metal plate hole 15. The metal plate is not blocked by the baffle 13, and the first electromagnet 07 on the opening assembly 05 can then attract the metal plate inside the metal plate hole 15. A portion of the extension 14 remains between the baffle 13 and the opening of the automatic bag feeding groove 12, thus preventing the metal plate from sliding out randomly and ensuring that each metal plate is carried out by the metal plate hole 15.

[0064] In this optional embodiment, a spring is provided at the end of the automatic bag feeding groove 12. The spring is used to push the iron plate to move towards the baffle 13. The spring is located inside the automatic bag feeding groove 12, and one end of the spring is fixed to the end of the automatic bag feeding groove 12. Specifically, a pin is provided at the end of the automatic bag feeding groove 12, and the spring is sleeved on the outside of the pin. The spring is fixed inside the automatic bag feeding groove 12 by the pin, and the other end abuts against the iron plate. In addition, an iron plate inlet 17 is provided on the automatic bag feeding groove 12, through which the iron plate on the empty drawstring bag 30 can be put into the automatic bag feeding groove 12.

[0065] In another optional embodiment, the opening assembly 05 includes a horizontal plate 18, a moving block 19, and a slider 20. The moving block 19 and the slider 20 are respectively fixed at both ends of the horizontal plate 18. The slider 20 is sleeved on the slide rod 06. The moving block 19 is movably connected to the ball screw 21 in the drive module 04. The drive module 04 is used to drive the moving block 19 to move through the ball screw 21. A first electromagnet 07 is provided on the horizontal plate 18, and the first electromagnet 07 faces the storage assembly 02. A pulley bracket 22 is provided at the end of the partition plate 11. A protrusion 23 is provided on the horizontal plate 18, and the protrusion 23 is aligned with the pulley bracket 22. An inclined surface is provided on the protrusion 23.

[0066] The horizontal plate 18 is parallel to the storage component 02. A slider 20 and a moving block 19 are respectively provided at both ends of the horizontal plate 18. The slider 20 is connected to the slide rod 06, and the moving block 19 is connected to the ball screw 21 in the drive module 04. The drive module 04 includes components such as the ball screw 21 and the drive motor 31. The drive motor 31 drives the ball screw 21 to rotate, thereby driving the moving block 19 connected to the ball screw 21 to move.

[0067] The moving block 19 is a component fixed to one end of the horizontal plate 18. The inner wall of the moving block 19 is provided with a threaded hole or groove that matches the ball screw 21 so that it can be movably connected with the ball screw 21. When the ball screw 21 rotates, the moving block 19 can be driven to move linearly along the length of the ball screw 21 through the meshing of the threads.

[0068] The slider 20 is fitted over the slide rod 06, which is a fixed guide component used to limit the movement direction of the slider 20 and ensure that the slider 20 maintains a straight trajectory during movement. The cooperation between the slider 20 and the slide rod 06 can improve stability and reduce friction and resistance during movement.

[0069] The first electromagnet 07 is mounted on the horizontal plate 18. The magnetism of the side of the first electromagnet 07 facing the storage component 02 is controllable. For example, it can be magnetized when energized and demagnetized when de-energized, or it can be demagnetized when energized and magnetized when de-energized. The first electromagnet 07 interacts with the iron sheet in the storage component 02 to open the drawstring bag 30.

[0070] A pulley bracket 22 is provided at one end of the partition plate 11 near the ball screw 21. The protrusion 23 on the horizontal plate 18 is aligned with the pulley bracket 22. The inclined surface on the protrusion 23 is used to guide the pulley bracket 22 during the movement of the opening assembly 05, so as to realize the smooth movement of the partition plate 11.

[0071] In this embodiment, the drive motor 31 drives the ball screw 21 to rotate. The rotation of the ball screw 21 causes the moving block 19 to move along the direction of the slide bar 06, thereby moving the entire horizontal plate 18 and the first electromagnet 07 together. During the movement, the protrusion 23 on the horizontal plate 18 interacts with the pulley bracket 22 at the end of the partition plate 11. The inclined surface on the protrusion 23 plays a guiding role, ensuring that the partition plate 11 moves smoothly along the track of the guide rail 10. When the protrusion 23 pushes the partition plate 11 to move to the other side along the guide rail 10, the iron plate hole 15 under the partition plate 11 moves from behind the baffle 13 to the side of the baffle 13. The first electromagnet 07 aligns with the iron plate hole 15 and attracts the iron plate in the iron plate hole 15. Subsequently, when the horizontal plate 18 moves away from the partition plate 11, the iron plates on both sides of the drawstring bag 30 move away respectively, realizing the opening of the drawstring bag 30.

[0072] In another optional embodiment, an infrared sensor 32 is also provided on the horizontal plate 18. The infrared sensor 32 is used to detect whether the drawstring bag 30 is full. The specific position of the infrared sensor 32 on the horizontal plate 18 can be adjusted according to actual needs, but it should be ensured that the sensor can clearly scan the opening of the drawstring bag 30 to detect whether the drawstring bag 30 has reached the full load state. By setting the infrared sensor 32 to monitor the full load state of the drawstring bag 30 in real time, waste and packaging failure caused by overfilling of materials can be avoided, thereby improving packaging efficiency.

[0073] In another optional embodiment, the binding assembly 03 includes a rope-taking stepper motor 24, a drum 25, and a second electromagnet 08. An operation plate 26 is mounted on the hopper 01. The rope-taking stepper motor 24 is fixed below the operation plate 26. The drum 25 is connected to the rope-taking stepper motor 24, and the second electromagnet 08 is fixed to the drum 25. The rope-taking stepper motor 24 controls the rotation of the drum 25. The operation plate 26 is located below the slide bar 06, and the slide bar 06 is fixed to the operation plate 26.

[0074] The drum 25 is connected to the rope-taking stepper motor 24, which drives the rotation of the drum 25 to control the tightness of the drawstring. The second electromagnet 08 is fixed on the drum 25 and can attract the iron piece on the drawstring during the drawstring bag 30's binding process, thus ensuring that the drawstring is wound on the drum 25.

[0075] In this embodiment, when the infrared sensor 32 detects that the drawstring bag 30 is full, the opening component 05 and the storage component 02 cooperate to release the opening of the drawstring bag 30. At this time, the winding stepper motor 24 drives the drum 25 to rotate. As the drum 25 rotates, the drawstring adsorbed on the drum 25 is gradually tightened, thereby achieving the drawstring opening of the drawstring bag 30.

[0076] In another optional embodiment, a winding plate 27 is provided in the drum 25, and the winding plate 27 is provided with winding teeth that protrude outward from the surface of the drum 25. The winding plate 27 can be integrally formed with the drum 25, or it can be a separate component embedded in the drum 25. By providing the winding plate 27 and winding teeth, the friction between the drawstring and the drum 25 can be increased, ensuring that the drawstring is not easily slipped during winding, thereby improving the stability and reliability of winding.

[0077] In another optional embodiment, an openable door panel 28 is provided on one side of the hopper 01, on the same side as the drawstring assembly 03. An electromagnetic lock 29 is provided on the door panel 28, and the door panel 28 is movably connected to the hopper 01. This movable connection can be achieved through a hinge or a latch; the specific method of movable connection is not limited. The door panel 28 can be opened, and its opening or closing is controlled by energizing or de-energizing the electromagnetic lock 29. For example, when the door panel 28 is closed and the electromagnetic lock 29 is de-energized, when the drawstring assembly 03 pulls the drawstring bag 30 outward from the door panel 28, the energized electromagnetic lock 29 is released, opening the door panel 28. After the drawstring bag 30 leaves the door panel 28, the opened door panel 28 automatically returns to the closed state. After the door panel 28 is closed, the electromagnetic lock 29 is de-energized again, achieving automatic locking.

[0078] During the bag-retrieving process of this application, four metal pieces on both sides of the opening of the pre-prepared drawstring bag 30 are placed into the automatic bag-feeding slot 12 through the metal piece inlet 17. The metal pieces are held in place by springs to prevent them from falling out. When the foremost metal piece is pushed out with the partition plate 11, it is attracted by the first electromagnet 07. After the partition plate 11 is reset, the spring pushes the subsequent metal pieces forward, and the metal pieces behind continue to fill the empty space in the automatic bag-feeding slot 12.

[0079] In another feasible approach, for the double-sided drawstring bag 30, two drawstring assemblies 03 can be provided. The two drawstring assemblies 03 are located on both sides of the hopper 01, one below the slide bar 06 and the other below the ball screw 21. When the material is full, the drawstring assemblies 03 on both sides simultaneously wind up the drawstrings to tighten the bag opening. At this time, the bottom of the hopper 01 can be opened. After the bag opening is tightened and the drawstring assemblies 03 on both sides are released, the packaged drawstring bag 30 is removed from the bottom of the hopper 01.

[0080] Please participate Figure 9 A second aspect of this application provides an automatic packing method for drawstring bags, comprising:

[0081] 101. Place the metal pieces on both sides of the drawstring bag opening into the automatic bag feeding groove of the bag hanging plate in sequence. The front metal piece is squeezed into the metal piece hole on the partition plate by the spring. The drawstring bag opening is equipped with a front metal piece and a rear metal piece. The metal piece hole can hold one metal piece at a time.

[0082] 102. The horizontal plate is controlled to move towards the hanging bag plate by the drive module. When the protrusion on the horizontal plate squeezes the partition plate and moves towards the slide bar, the iron plate hole carries the front iron plate to the adsorption position, and the adsorption position is aligned with the first electromagnet on the horizontal plate.

[0083] 103. Control the first electromagnet on the horizontal plate to attract the front iron plate;

[0084] 104. By controlling the horizontal plate to move away from the hanging bag plate through the drive module, the first electromagnet carries the front iron plate away from the rear iron plate of the drawstring bag, thereby opening the bag opening of the drawstring bag.

[0085] 105. Control the second electromagnet in the drawstring assembly to attract the iron piece on the drawstring;

[0086] 106. Fill the drawstring bag with material along the opening. Use an infrared sensor to detect the fullness of the drawstring bag. If it is full, stop filling.

[0087] 107. Control the first electromagnet to release the front iron piece, and control the horizontal plate to move towards the hanging bag plate through the drive module until the iron piece hole pushes the rear iron piece to the adsorption position.

[0088] 108. Control the first electromagnet to attract the iron sheet, and control the horizontal plate to move away from the hanging bag plate through the drive module. After moving to the preset position, control the first electromagnet to release the iron sheet.

[0089] 109. Control the rotation of the drum in the drawstring assembly to retract the drawstring and tighten the bag opening;

[0090] 110. Control the electromagnetic lock on the door panel to open, so that the tightened drawstring bag can be removed from the door panel;

[0091] 111. After the drawstring bag is removed from the door panel, control the drum to reverse and the second electromagnet to demagnetize.

[0092] In this embodiment, steps 101 to 104 are the process of opening the drawstring bag. Four metal pieces are set on the opening of the drawstring bag. In a drawstring bag, there are two front metal pieces and two rear metal pieces. The front metal pieces are the two metal pieces close to the horizontal plate. Two automatic bag feeding slots are arranged side by side on the bag hanging plate. The two front metal pieces are placed in the two automatic bag feeding slots respectively, and the two rear metal pieces are also placed in the two automatic bag feeding slots respectively. The front metal pieces and the rear metal pieces are placed in the automatic bag feeding slots in sequence.

[0093] As the horizontal plate moves toward the hanging bag plate, the protrusion on the horizontal plate pushes the partition plate toward the sliding rod via the inclined surface. At this time, the front iron plate is pushed from behind the baffle to the side of the baffle, which is the adsorption position. At this time, the first electromagnet on the horizontal plate contacts the front iron plate, and controls the first electromagnet to be magnetically activated to adsorb the front iron plate. The magnetic activation can be either energized or de-energized.

[0094] After the front metal plate is attracted, the control plate moves backward. At this time, the partition plate returns to its original position, and the rear metal plate is pushed into the metal plate hole under the action of the spring. At this time, the front metal plate and the rear metal plate separate, thereby opening the drawstring bag.

[0095] Step 106 is the process of filling the drawstring bag with material. During this process, the fullness of the drawstring bag needs to be detected by an infrared sensor. If it is full, the filling is stopped and step 107 is executed. It should be noted that the fullness is a human-defined value and cannot be simply understood as the bag being filled to the opening. The detection position of the infrared sensor is the fullness position. When the material is filled to this position, it can be considered that the bag is full, and the filling is stopped at this time.

[0096] Steps 107 and 108 are the process of releasing the iron plates at both ends of the bag after the drawstring bag is fully loaded. First, the first electromagnet is demagnetized to release the front iron plate. Then, the horizontal plate is moved towards the bag hanging plate until the protrusion on the horizontal plate pushes the partition plate to one side of the slide bar. At this time, the rear iron plate is pushed out along with the iron plate hole. Then, the first electromagnet is turned on to attract the rear iron plate. During the process of the horizontal plate moving backward, the first electromagnet is demagnetized again to release the rear iron plate. After both the front and rear iron plates are released, the bottom of the hopper supports the drawstring bag. At this time, step 109 is executed to wind up the drawstring.

[0097] Steps 105 and 109 are the process of tightening the opening of the drawstring bag. For a single-sided drawstring bag, there are generally two drawstrings, each with a metal plate. In step 105, the metal plates on the drawstrings are attracted by the second electromagnet in the drawstring assembly. In step 109, the roller in the drawstring assembly is rotated to wind up the drawstrings, tightening the opening of the drawstring bag and completing the packaging.

[0098] In steps 110 and 111, the packaged drawstring bags need to be removed from the hopper. In this step, the electromagnetic lock on the door panel is opened. After the electromagnetic lock is opened, the door panel is unlocked and can be opened. The drum in the drawstring assembly continues to rotate, moving the packaged drawstring bags out of the hopper from the door panel. Then, the drum is reversed, which also demagnetizes the second electromagnet, thus releasing the drawstring bags. After the packaged drawstring bags are released, they can be transported away manually or by conveyor belt.

[0099] Those skilled in the art will clearly understand that the above description, in conjunction with the accompanying drawings of the embodiments of this application, provides a clear and complete description of the technical solutions in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0100] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0101] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0102] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0103] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0104] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic packing device for drawstring bags, characterized in that, The drawstring bag has metal pieces fixed to its opening and drawstring respectively, and the automatic packaging device includes: Hopper, storage assembly, nozzle assembly, drive module, and opening assembly; A sliding rod is provided on one side of the hopper, and the drive module is fixed on the opposite side. The two ends of the opening assembly are movably connected to the sliding rod and the drive module, respectively. The drive module is used to control the opening assembly to move along the sliding rod. The storage component is located at the end of the drive module and fixed on the hopper. The storage component is used to hold empty drawstring bags. The opening component cooperates with the storage component through a first electromagnet to open the bag opening. The drawstring assembly is fixed on the hopper, and a second electromagnet is provided on the drawstring assembly for attracting the drawstring. The drawstring assembly is used to shrink the bag opening. The storage assembly includes a hanging bag plate, a guide rail, and a divider plate. The hanging bag plate is provided with an upwardly protruding top plate, the guide rail is fixed on the top plate, and the divider plate is movably connected to the guide rail. The lower surface of the bag hanging plate is provided with an automatic bag feeding groove and a baffle plate. The baffle plate is aligned with the automatic bag feeding groove, and the automatic bag feeding groove is used to place the iron plate at the bag opening. The partition plate is provided with an extension that extends downward through the bag hanging plate. The extension is located between the automatic bag feeding groove and the baffle plate. The extension is provided with a metal plate hole that is aligned with the opening of the automatic bag feeding groove.

2. The automatic packaging device according to claim 1, characterized in that, A spring is provided at the end of the automatic bag feeding groove, and the spring is used to push the iron plate to move towards the baffle plate.

3. The automatic packaging device according to claim 1, characterized in that, The automatic bag feeding trough is equipped with an inlet for placing iron sheets.

4. The automatic packaging device according to any one of claims 1 to 3, characterized in that, The opening assembly includes a horizontal plate, a moving block, and a slider. The moving block and the slider are respectively fixed at both ends of the horizontal plate. The slider is sleeved on the outside of the slide rod. The moving block is movably connected to a ball screw in the drive module. The drive module is used to drive the moving block to move through the ball screw. The first electromagnet is provided on the horizontal plate, and the first electromagnet faces the storage component. The partition plate is provided with a pulley bracket at its end, and a protrusion is provided on the horizontal plate. The protrusion is aligned with the pulley bracket and has an inclined surface.

5. The automatic packaging device according to claim 4, characterized in that, An infrared sensor is also installed on the horizontal plate.

6. The automatic packaging device according to any one of claims 1 to 3, characterized in that, The cable tie assembly includes a rope take-up stepper motor, a drum, and a second electromagnet. An operation panel is provided on the hopper. The rope take-up stepper motor is fixed below the operation panel. The drum is connected to the rope take-up stepper motor. The second electromagnet is fixed on the drum. The rope take-up stepper motor is used to control the rotation of the drum.

7. The automatic packaging device according to claim 6, characterized in that, The drum is provided with a winding plate, and the winding plate is provided with winding teeth that protrude outward from the surface of the drum.

8. The automatic packaging device according to any one of claims 1 to 3, characterized in that, The hopper is provided with an openable door panel on one side, the door panel is on the same side as the spout assembly, and the door panel is provided with an electromagnetic lock.

9. An automatic packing method for drawstring bags, applied to the automatic packing apparatus according to any one of claims 1 to 8, characterized in that, include: The metal pieces on both sides of the drawstring bag opening are placed into the automatic bag feeding groove of the bag hanging plate in sequence. The front metal piece is squeezed into the metal piece hole on the partition plate by the spring. The drawstring bag opening is provided with a front metal piece and a rear metal piece. The metal piece hole can accommodate one metal piece at a time. The drive module controls the horizontal plate to move towards the bag hanging plate. When the protrusion on the horizontal plate presses the partition plate and moves towards the slide bar, the iron plate hole carries the front iron plate to the adsorption position, and the adsorption position is aligned with the first electromagnet on the horizontal plate. The first electromagnet on the horizontal plate is controlled to attract the front iron sheet; The drive module controls the horizontal plate to move away from the hanging bag plate, and the first electromagnet carries the front iron plate away from the rear iron plate of the drawstring bag, thereby opening the bag opening of the drawstring bag. The second electromagnet in the drawstring assembly is controlled to attract the iron piece on the drawstring; Material is filled into the drawstring bag along the bag opening. The fullness of the drawstring bag is detected by an infrared sensor. If the bag is full, filling is stopped. The first electromagnet is controlled to release the front iron plate, and the horizontal plate is controlled to move towards the hanging bag plate by the drive module until the iron plate hole pushes the rear iron plate to the adsorption position. The first electromagnet is controlled to attract the rear iron piece, and the horizontal plate is controlled to move away from the hanging bag plate through the drive module. After moving to the preset position, the first electromagnet is controlled to release the rear iron piece. Controlling the rotation of the roller in the drawstring assembly to retract the drawstring and tighten the bag opening; The electromagnetic lock on the control door panel is opened so that the tightened drawstring bag can be removed from the door panel; After the drawstring bag is removed from the door panel, the rewind drum is reversed and the second electromagnet is demagnetized.

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