Packaging bag folding device, folding system and packaging bag folding method

Abstract

The present application relates to the field of packaging equipment, and in particular to a packaging bag folding device, a folding system and a packaging bag folding method. The device includes a frame, and an adsorption mechanism, an expansion mechanism and a folding mechanism installed on the frame; the adsorption mechanism includes a suction cup for adsorbing the folding portion of the packaging bag from the side of the packaging bag; the expansion mechanism includes a lifting module and an expansion module, the lifting module can drive the expansion module to do lifting and lowering movements, and the expansion module includes an expansion member that can be opened and closed; the folding mechanism is arranged at a position between the adsorption mechanism and the expansion mechanism, and the folding mechanism includes a first telescopic module and a folding member connected to the first telescopic module. The folding system also includes a trigger switch and a controller, and the controller can control the actions of various parts of the folding device according to the trigger signal. The present application can automatically perform folding operations on the folding portion of the packaging bag, with a high degree of automation, which improves production efficiency while saving labor costs.

Description

Technical Field

[0001] The present application relates to the field of packaging equipment, and in particular to a packaging bag folding device, a packaging bag folding system and a packaging bag folding method. Background Art

[0002] In the packaging process of many granular materials, packaging bags are needed. For example, in the packaging process of compound fertilizer, after the compound fertilizer is filled into the packaging bag, the feeding port of the packaging bag is still exposed on the outside. Usually, there is a side opening next to the feeding port of the packaging bag. At this time, the folded part needs to be bent into the side opening to cover the feeding port and isolate the air.

[0003] The material of the packaging bags for granular materials is usually relatively soft (especially valve bags), and it is difficult to achieve the folding action by automatic operation. At present, there is no mature automatic equipment on the market to fold the packaging bags, and most of them need to be done manually, which not only limits production efficiency but also increases labor costs. Summary of the invention

[0004] Based on this, the present application provides a packaging bag folding device, a folding system and a packaging bag folding method, which can automatically fold the feed port of the packaging bag.

[0005] In a first aspect, the present application provides a packaging bag folding device, comprising a frame, and a suction mechanism, an expansion mechanism, and a folding mechanism installed on the frame;

[0006] The adsorption mechanism comprises a suction cup, which is used to adsorb the folding portion of the packaging bag from the side of the packaging bag;

[0007] The expansion mechanism includes a lifting module and an expansion module connected to the lifting module, the lifting module can drive the expansion module to do lifting movement, and the expansion module includes an expansion piece that can be opened and closed;

[0008] The folding mechanism is arranged between the adsorption mechanism and the expansion mechanism, and the folding mechanism comprises a first telescopic module and a folding piece connected to the first telescopic module.

[0009] In combination with the first aspect, the present application provides a first possible implementation of the first aspect, wherein the adsorption mechanism further includes a second telescopic module; the second telescopic module is connected to the suction cup, and is used to drive the suction cup to perform reciprocating linear motion.

[0010] In combination with a first possible implementation manner of the first aspect, a movement direction of the second telescopic module and a movement direction of the lifting module are perpendicular to each other.

[0011] In combination with a first possible implementation manner of the first aspect, an angle between a movement direction of the first telescopic module and a movement direction of the second telescopic module is between 45° and 75°.

[0012] Preferably, the angle between the movement direction of the first telescopic module and the movement direction of the second telescopic module is between 60° and 70°.

[0013] In combination with the first aspect, the present application provides a second possible implementation of the first aspect, wherein the expansion module includes an expansion cylinder and at least two expansion pieces, each of the expansion pieces is connected to the expansion cylinder, and the expansion cylinder can drive the free ends of the two expansion pieces to close or open.

[0014] In a second aspect, the present application provides a folding system, including a trigger switch, a controller and the packaging bag folding device, wherein the controller is respectively connected to the trigger switch, the suction cup, the lifting module, the expanding module and the folding mechanism signal.

[0015] In combination with the second aspect, the present application provides a first possible implementation of the second aspect, wherein the folding system further includes a conveying mechanism, and the controller is further signal-connected to a driving module of the conveying mechanism.

[0016] In combination with a first possible implementation manner of the second aspect, the conveying mechanism is a conveyor belt system.

[0017] In combination with a first possible implementation manner of the second aspect, the trigger switch is a photoelectric switch.

[0018] In a third aspect, the present application provides a packaging bag folding method based on the folding system provided in the second aspect, comprising the following steps:

[0019] The conveying mechanism drives the packaging bag to move until the packaging bag touches the trigger switch, and the controller controls the transmission mechanism to stop moving;

[0020] The controller controls the expansion mechanism to descend, inserting the expansion piece into the side opening of the packaging bag; the controller controls the expansion piece to open, so that the folding part of the packaging bag is propped up;

[0021] The controller controls the suction cup to absorb the folding portion, and the controller controls the expansion mechanism to rise, so that the expansion piece is separated from the packaging bag;

[0022] The controller controls the first telescopic module to extend, and the folding piece bends the folding portion into the side opening of the packaging bag.

[0023] The technical effects of this application are:

[0024] Through the coordinated operation of the adsorption mechanism, the expansion mechanism and the folding mechanism, the folding part of the packaging bag can be automatically folded, with a high degree of automation, which improves production efficiency and saves labor costs.

[0025] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the position of the folding portion of the packaging bag before and after the folding;

[0028] Figure 2 A schematic diagram of the structure of a packaging bag folding device provided in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of a folding system provided in an embodiment of the present application from a first angle;

[0030] Figure 4 A second angle schematic diagram of the folding system provided in an embodiment of the present application;

[0031] Figure 5 This is a schematic diagram of the state where the expansion mechanism is inserted into the feeding port of the packaging bag;

[0032] Figure 6 It is a schematic diagram of the state in which the adsorption mechanism adsorbs the folding part of the packaging bag.

[0033] Reference numerals:

[0034] 1-frame; 2-second telescopic module; 3-suction cup;

[0035] 4-first telescopic module; 5-folding piece; 6-lifting module;

[0036] 7-expanding cylinder; 8-expanding piece; 9-conveyor belt system;

[0037] 10- first station; 11- second station; 12- third station;

[0038] 13-packaging bag; 14-side opening; 15-folding portion. DETAILED DESCRIPTION

[0039] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0040] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", and "connection" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The packaging bag to be folded is as follows Figure 1 As shown, a side opening 14 is provided at a corner of the packaging bag 13, near the feeding port, and a folding portion 15 connected to the bag body of the packaging bag 13 is provided there. After the packaging bag 13 is filled with materials, the folding portion 15 needs to be bent into the side opening 14 to close the feeding port.

[0044] like Figure 2 As shown, an embodiment of the present application first provides a packaging bag folding device, which includes a frame 1, and an adsorption mechanism, an expansion mechanism and a folding mechanism installed on the frame 1.

[0045] Specifically, the frame 1 is in an L-shaped structure, including a vertical arm and a horizontal arm.

[0046] The adsorption mechanism is arranged on the vertical arm of the frame 1, and its height corresponds to the folding portion 15 of the packaging bag 13. It includes a second telescopic module 2 and a suction cup 3 connected to the protruding end of the second telescopic module 2, which is used to adsorb the folding portion 15 of the packaging bag 13 from the side of the packaging bag 13.

[0047] The expansion mechanism is arranged on the cross arm of the frame 1, and its horizontal position corresponds to the side opening 14 of the packaging bag 13. The expansion mechanism specifically includes a lifting module 6 and an expansion module connected to the lifting module 6, and the expansion module includes an expansion cylinder 7 and an expansion member 8. The lifting module 6 can drive the expansion module to do lifting and lowering movements, and the expansion cylinder 7 can drive the expansion member 8 to do opening and closing movements, so as to expand the side opening 14 of the packaging bag 13.

[0048] The folding mechanism is arranged between the adsorption mechanism and the expansion mechanism, that is, it can be arranged on the vertical arm or the horizontal arm of the frame 1. The folding mechanism specifically includes a first telescopic module 4 and a folding member 5 connected to the extended end of the first telescopic module 4, and the folding member 5 performs a folding action on the folding portion 15 of the packaging bag 13 through the reciprocating motion of the folding member 5.

[0049] More specifically, the first telescopic module 4, the second telescopic module 2 and the lifting module 6 all use cylinders, which are quick and sensitive to react and easy to control. In other embodiments, other linear motion mechanisms may be used to replace the cylinders, such as stepper motors.

[0050] The expansion module comprises an expansion cylinder 7 and at least two expansion pieces 8. The two expansion pieces 8 are long strips connected to the expansion cylinder 7 respectively. The expansion cylinder 7 can drive the free ends of the two expansion pieces 8 to close or open.

[0051] In the preferred scheme of this embodiment, the movement directions of the second telescopic module 2 and the lifting module 6 are perpendicular to each other. For example, the second telescopic module 2 can be set horizontally and the lifting module 6 can be set vertically, so as to facilitate the suction cup 3 to better adsorb the folding part 15 of the packaging bag 13 and facilitate the expansion piece 8 to be accurately inserted into the side opening 14 of the packaging bag 13.

[0052] In the preferred solution of this embodiment, the angle between the movement direction of the first telescopic module 4 and the movement direction of the second telescopic module 2 is greater than the angle between the movement direction of the first telescopic module 4 and the movement direction of the lifting module 6, so as to facilitate the folding member 5 to bend the folding portion 15 of the packaging bag 13 at a suitable angle. Specifically, the angle between the movement direction of the first telescopic module 4 and the movement direction of the second telescopic module 2 is between 45° and 75°, preferably between 60° and 70°. Such a setting can make the folding portion 15 fit the inner wall position of the side opening 14 as much as possible after bending, thereby improving the sealing effect of the feed port.

[0053] The present application also provides a folding system for packaging bags. The system includes Figure 2 The packaging bag folding device shown also includes a trigger switch and a controller. The controller is respectively connected to the trigger switch, the suction cup 3, the lifting module 6, the first telescopic module 4, the second telescopic module 2 and the expanding cylinder 7 by signals.

[0054] When the packaging bag to be folded is placed in place, the trigger switch will be triggered, thereby sending a trigger signal to the controller, which controls other power mechanisms to work according to the program. The specific process will be described in detail later.

[0055] In order to meet the needs of material transmission, the folding system also includes a conveying mechanism.

[0056] like Figure 3 and Figure 4 As shown, in the solution provided by this embodiment, in addition to the above-mentioned folding system, a conveyor belt system 9 is also provided. The controller is also connected to the drive module signal of the conveyor belt system 9 at the same time.

[0057] In the preferred solution of this embodiment, the trigger switch can be a photoelectric switch, which is arranged on the frame 1 below the adsorption mechanism. The trigger of the photoelectric switch is relatively sensitive and easy to install. Of course, other physical trigger switches can also be used according to the actual use scenario.

[0058] The following is a detailed description of the method of folding the packaging bag using the folding system. The specific working steps are as follows:

[0059] A plurality of packaging bags 13 are transported by the conveyor belt system 9. As the conveyor belt moves, the packaging bags 13 move from the first station 10 to the second station 11 and trigger the trigger switch. After receiving the trigger signal, the controller controls the conveyor belt system 9 to stop moving.

[0060] like Figure 5As shown, the controller sends a control signal to the lifting module 6, and the lifting module 6 descends to insert the expanding piece 8 with a closed free end into the side opening 14 of the packaging bag 13; after the lifting module 6 stops descending, the expanding cylinder 7 works to open the closed expanding piece 8, thereby completing the expanding action of the side opening 14 of the packaging bag 13;

[0061] like Figure 6 As shown, the controller sends a control signal to the second telescopic module 2, and the second telescopic module 2 drives the suction cup 3 to extend; the controller sends a control signal to the suction cup 3, and the suction cup 3 is started to suck the folding portion 15 of the packaging bag 13 close to the bag body of the packaging bag 13;

[0062] The controller sends a control signal to the expanding cylinder 7, which contracts and retracts the expanding member 8 to a closed state; then sends a control signal to the lifting module 6, which drives the expanding member 8 to rise and separate from the side opening 14 of the packaging bag 13;

[0063] The controller sends a control signal to the first telescopic module 4, and the first telescopic module 4 drives the folding member 5 to extend, and the folding portion 15 above the suction cup 3 is folded into the side opening 14 of the packaging bag 13 from obliquely above through the folding member 5;

[0064] The controller sends a control signal to the first telescopic module 4, and the first telescopic module 4 drives the folding member 5 to retract, and the folding member 5 is separated from the packaging bag 13; the controller sends a control signal to the suction cup 3 and the second telescopic module 2, the suction cup 3 stops working, the second telescopic module 2 retracts, and the adsorption mechanism is separated from the packaging bag 13;

[0065] The controller sends a control signal to the conveyor belt system 9 , and the conveyor belt continues to move, driving the packaging bag 13 to move backward to the third station 12 .

[0066] This process is repeated to complete the fully automatic folding process of multiple packaging bags 13.

[0067] The embodiments of the present application have the following beneficial effects:

[0068] (1) The degree of automation is high, which can save 1 to 2 workers and save labor costs;

[0069] (2) The commonly used conveyor belt system is adopted, which makes it easier to match other equipment later;

[0070] (3) It is preferred to use a cylinder as the power source, which is simple to control, sensitive in action and high in precision;

[0071] (4) It can effectively improve production efficiency, and the fastest folding time can be 5s / bag.

[0072] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A packaging bag folding device, characterized in that: It includes a frame, and an adsorption mechanism, an expansion mechanism and a folding mechanism installed on the frame; The adsorption mechanism comprises a suction cup, which is used to adsorb the folding portion of the packaging bag from the side of the packaging bag; The expansion mechanism includes a lifting module and an expansion module connected to the lifting module, the lifting module can drive the expansion module to do lifting movement, and the expansion module includes an expansion piece that can be opened and closed; The folding mechanism is arranged between the adsorption mechanism and the expansion mechanism, and the folding mechanism comprises a first telescopic module and a folding member connected to the first telescopic module; The adsorption mechanism further includes a second telescopic module; the second telescopic module is connected to the suction cup and is used to drive the suction cup to perform reciprocating linear motion; The movement direction of the second telescopic module is perpendicular to the movement direction of the lifting module; An angle between a movement direction of the first telescopic module and a movement direction of the second telescopic module is between 45° and 75°.

2. The packaging bag folding device according to claim 1, characterized in that: The expansion module comprises an expansion cylinder and at least two expansion pieces, each of the expansion pieces is connected to the expansion cylinder, and the expansion cylinder can drive the free ends of the two expansion pieces to close or open.

3. A folding system, characterized in that: It comprises a trigger switch, a controller and the packaging bag folding device as claimed in claim 1 or 2, wherein the controller is respectively connected to the trigger switch, the suction cup, the lifting module, the expanding module and the folding mechanism signal.

4. The folding system according to claim 3, characterized in that: It also includes a transmission mechanism, and the controller is also connected to the driving module signal of the transmission mechanism.

5. The folding system according to claim 4, characterized in that: The conveying mechanism is a conveyor belt system.

6. The folding system according to claim 4, characterized in that: The trigger switch is a photoelectric switch.

7. A packaging bag folding method based on the folding system according to any one of claims 4 to 6, characterized in that: The following steps are involved: The conveying mechanism drives the packaging bag to move until the packaging bag touches the trigger switch, and the controller controls the conveying mechanism to stop moving; The controller controls the expansion mechanism to descend, and inserts the expansion piece into the side opening of the packaging bag; The controller controls the expansion member to open so that the folding portion of the packaging bag is propped up; The controller controls the suction cup to absorb the folding portion, and the controller controls the expansion mechanism to rise, so that the expansion piece is separated from the packaging bag; The controller controls the first telescopic module to extend, and the folding piece bends the folding portion into the side opening of the packaging bag.

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