Opening folding mechanism of woven bag opening closing machine and woven bag opening closing machine

Abstract

The utility model provides an opening folding mechanism of a woven bag opening rolling machine and the woven bag opening rolling machine, and belongs to the technical field of woven bag processing, the opening folding mechanism comprises an ultrasonic template, a bag opening cover, edge folding plates and two edge folding assemblies, the ultrasonic template is provided with a front end and a rear end, the bag opening cover is arranged at the front end of the ultrasonic template, the edge folding plates are arranged at the two sides of the bag opening cover, and the two edge folding assemblies are arranged on the back end of the bag opening cover. Edge folding openings are formed in the two edge folding assemblies, the two edge folding assemblies are arranged on the two sides of the ultrasonic template respectively, each edge folding assembly comprises an air cylinder, a moving assembly and an edge folding block, a driving shaft of the air cylinder is arranged in the direction of the corresponding edge folding plate, the edge folding blocks are connected with the driving shafts of the air cylinders and provided with edge folding hook parts, and the edge folding hook parts can penetrate through the corresponding edge folding openings. A space for the action of the edge folding hook part is arranged between the ultrasonic template and the edge folding plate; the bag opening of the woven bag can be quickly folded, the production efficiency of products is improved, meanwhile, the mechanism is simple in structure, and the failure rate and the manufacturing cost of equipment are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of woven bag processing, in particular to a folding mechanism of a woven bag mouth machine and a woven bag mouth machine. Background Technique

[0002] Woven bags are mainly made by extruding plastic raw materials into thin films, then cutting the thin films into filaments, and then unidirectionally stretching the cut filaments into flat filaments. After warp and weft weaving, a semi-finished woven bag is formed. Then, the semi-finished woven bag is cut into segments to obtain woven bags of the required size. Finally, after sewing one end of the woven bag, the product can be obtained.

[0003] When producing double-layer woven bags, it is necessary to first turn the inner and outer bags inward by one circle to wrap the edge of the inner bag with the outer bag, and then the inner and outer bags at the folding position are fixed by hot pressing. In the prior art, for example, the patent with the publication number CN219727405U discloses a folding mechanism for woven bags, including a frame. The frame is provided with an upper bag suction plate, a lower bag suction plate, a bag suction plate driving member for driving the upper bag suction plate and the lower bag suction plate to slide towards or away from each other, a folding member swingably arranged on the frame, and a folding driving member for driving one end of the folding member to swing between the upper bag suction plate and the lower bag suction plate. The frame is also provided with two groups of bag supporting plates and a bag supporting plate driving member for driving the bag supporting plates to obliquely slide into or out of the space between the upper and lower bag suction plates. The two groups of bag supporting plates are arranged at intervals to form a folding angle space. The folding angle space is located between the upper and lower bag suction plates, and one end of the folding member can swing from the outside of the folding angle space to the inside of the folding angle space. This mechanism has a complex structure, resulting in an increase in the failure rate of the equipment and an increase in the manufacturing cost of the equipment. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies existing in the prior art, and to provide a folding mechanism of a woven bag mouth machine and a woven bag mouth machine.

[0005] The technical solutions adopted by the utility model are as follows: In the first aspect, the present application provides a folding mechanism of a woven bag mouth machine, including:

[0006] An ultrasonic template, which has a front end and a rear end, and the front end thereof is for the bag mouth of the woven bag to be sleeved in;

[0007] A bag supporting cover, which is arranged at the front end of the ultrasonic template;

[0008] A folding plate, which is arranged on both sides of the bag supporting cover and is provided with a folding opening;

[0009] And two folding components, which are respectively arranged on both sides of the ultrasonic template and include:

[0010] A cylinder, the driving shaft of which is arranged towards the corresponding folding plate;

[0011] A moving component for driving the cylinder to move in the front-to-back direction of the ultrasonic template;

[0012] And a hemming block connected to the driving shaft of the cylinder, having a hemming hook portion that can pass through a corresponding hemming opening, and there is a space for the action of the hemming hook portion between the ultrasonic template and the hemming plate.

[0013] In some embodiments, the ultrasonic template, the bag-supporting cover and the hemming plate are integrated.

[0014] In some embodiments, there are two bag-supporting covers arranged on both sides of the front end of the ultrasonic template, and the bag-supporting covers are adjustable along the width direction of the ultrasonic template. When the bag-supporting covers are adjusted, the hemming plate moves accordingly.

[0015] In some embodiments, a first guiding portion is provided at the front end of the hemming plate, and the hemming opening is U-shaped and arranged at the rear end of the hemming plate.

[0016] In some embodiments, a second guiding portion is provided at the front end of the bag-supporting cover.

[0017] In some embodiments, the second guiding portion is an arc-shaped surface that gradually shrinks from the rear end to the front end.

[0018] In some embodiments, in the height direction of the ultrasonic template, the size of the ultrasonic template is smaller than that of the bag-supporting cover and smaller than that of the hemming plate.

[0019] In some embodiments, the ultrasonic template includes a front plate portion and a rear plate portion. The width of the front plate portion is smaller than that of the rear plate portion. The bag-supporting cover is arranged at the front end of the front plate portion, and a third guiding portion is provided at the front end of the rear plate portion.

[0020] In a second aspect, the present application provides a woven bag mouth curling machine, including the hemming mechanism, the upper ultrasonic hot pressing component and the lower ultrasonic hot pressing component of the woven bag mouth curling machine;

[0021] The upper ultrasonic hot pressing component and the lower ultrasonic hot pressing component are respectively arranged above and below the ultrasonic template, and both include an ultrasonic pressing head, a lifting structure and a driver. The driver drives the lifting structure to make the ultrasonic pressing head move towards the ultrasonic template for hot pressing the folded mouth of the woven bag.

[0022] In some embodiments, it includes a frame, and a fixing plate connected to the rear end of the ultrasonic template is arranged on the frame. A plurality of connecting holes are arranged on the fixing plate along the width direction of the ultrasonic template.

[0023] The beneficial effects of the present utility model are as follows: When folding the opening of the woven bag in the present utility model, first, the bag opening of the woven bag is sleeved along the front end of the ultrasonic template and exceeds the folding edge by a certain length. Then, through the control of the driving component and the air cylinder, the folding hook part is first moved to the side of the bag opening. Next, the folding hook part presses against the side of the bag opening, causing the edge of the bag opening to be folded inward once. Then, the folding hook part is moved towards the inside of the folding edge, causing the edge of the bag opening that has been folded once to be folded inward towards the inner side wall of the bag opening a second time. Then, the two folding hook parts hook the two sides of the bag opening on the inner sides of the two sides of the bag opening and move towards the rear end of the ultrasonic template. During the movement, the edge of the bag opening is completely folded, thereby realizing the rapid folding of the bag opening of the woven bag, improving the production efficiency of the product. At the same time, the mechanism has a simple structure, reducing the failure rate and manufacturing cost of the equipment, and contributing to the initial development of some small and micro enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still belongs to the scope of the present utility model.

[0025] Figure 1 Schematic diagram of the present utility model Figure 1 ;

[0026] Figure 2 Partial schematic diagram of the present utility model Figure 1 ;

[0027] Figure 3 Partial schematic diagram of the present utility model Figure 2 ;

[0028] Figure 4 Schematic diagram of the present utility model Figure 2 ;

[0029] Figure 5 Schematic diagram of the woven bag in the present utility model Figure 1 ;

[0030] Figure 6 Schematic diagram of the woven bag in the present utility model Figure 2 . DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following description provides specific application scenarios and requirements of this specification, aiming to enable those skilled in the art to manufacture and use the content in this specification. For those skilled in the art, various local modifications to the disclosed embodiments are obvious, and the general principles defined here can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the illustrated embodiments, but has the broadest scope consistent with the claims.

[0032] In the description of this application, it should be noted that unless otherwise clearly defined and limited, the terms "longitudinal", "transverse", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0033] Secondly, the terms "first", "second" and similar words do not represent any order, quantity or importance, but are only used to distinguish different components, and should not be understood as limiting the embodiments of this application.

[0034] In addition, the terms "mounted", "arranged", "provided with", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements or components.

[0035] For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] Regarding the drawings of this application, it should be clearly understood that the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0037] Embodiment 1:

[0038] The double-layer woven bag generally has a plastic film bag sleeved inside the outer woven bag, and can be used to pack small-particle items such as rice, flour, cement, etc. When producing this kind of double-layer woven bag, it is necessary to first turn the inner and outer bags inward by one circle, wrap the edge of the outer bag around the inner bag, and then the inner and outer bags at the folding position are fixed by hot pressing. Most of the woven bags in the prior art are produced through a dedicated fully automated production line. Although the production efficiency is relatively high, the overall structure is complex, especially the equipment cost is extremely high, which is not conducive to the popularization and use by some small and micro enterprises.

[0039] Therefore, as Figures 1 to 6 shown, this embodiment provides a woven bag mouth folding machine, including:

[0040] A frame 1, on which a fixed plate 100 is provided;

[0041] A mouth folding mechanism, the mouth folding mechanism includes:

[0042] An ultrasonic template 2, the ultrasonic template 2 has a front end and a rear end, the front end of which can be sleeved with the mouth of the woven bag, and the rear end of the ultrasonic template 2 is fixed to the fixed plate 100 by bolts. A plurality of connection holes 101 are arranged on the fixed plate 100 along the width direction of the ultrasonic template 2, so that ultrasonic templates 2 with different width dimensions can be adapted, and thus woven bags with different widths can be produced.

[0043] A bag supporting cover 3, the bag supporting cover 3 is arranged at the front end of the ultrasonic template 2, and the bag supporting cover 3 and the ultrasonic template 2 can be integrated, or are one and arranged at the front end of the ultrasonic template 2.

[0044] Folding plates 4, the folding plates 4 are arranged on both sides of the bag supporting cover 3, and are provided with folding openings 40 thereon. In this embodiment, the folding openings 40 are U-shaped and arranged at the rear end of the folding plates 4, and the front end of the folding plates 4 is provided with a first guiding portion 41, and the first guiding portion 41 is preferably an arc surface, which is convenient for the mouth of the woven bag to be sleeved. Among them, the folding plates 4 can be integrated with the bag supporting cover 3 or are two and are respectively arranged on both sides of the bag supporting cover 3.

[0045] Furthermore, the ultrasonic template 2, the bag supporting cover 3 and the folding plates 4 are integrated or are detachably connected. In this embodiment, the bag supporting covers 3 are two and are arranged on both sides of the front end of the ultrasonic template 2, and the bag supporting covers 3 are adjustable along the width direction of the ultrasonic template 2. When the bag supporting covers 3 are adjusted, the folding plates 4 move accordingly. Specifically, long round holes are arranged on the bag supporting covers 3 along the width direction of the ultrasonic template, and fixing holes adapted to the long round holes are arranged on the ultrasonic template 2.

[0046] Secondly, a second guiding portion 30 is provided at the front end of the bag supporting cover 3. The second guiding portion 30 can be an arc surface, an inclined surface, etc. Preferably, the second guiding portion 30 is an arc surface, which gradually contracts from the rear end to the front end. Specifically, the bag supporting cover 3 is formed by bending a plate, and its cross section is U-shaped, which is beneficial to the insertion of the mouth of the woven bag, and the exposed end will not cause harm to the feeding worker.

[0047] Secondly, the hemming plate 4 is connected to the bag supporting cover 3 through a fixing block, and the fixing block is just embedded in the groove formed by bending the bag supporting cover 3. The hemming plate 4 is connected to the side of the fixing block through bolts.

[0048] Two hemming assemblies 5 are provided on both sides of the ultrasonic template 2 respectively, and each hemming assembly 5 includes:

[0049] A cylinder 50, which is arranged on the sliding seat 511, and its driving shaft is arranged towards the corresponding hemming plate 4;

[0050] A moving assembly 51 for driving the cylinder 50 to move along the front end to the rear end direction of the ultrasonic template 2; There are various structures of the moving assembly 51. For example, the moving assembly 51 includes a slide rail 510, a sliding seat 511 and a driving assembly 512. The slide rail 510 is arranged along the front end to the rear end direction of the ultrasonic template 2. Preferably, there are two slide rails 510 arranged in parallel. The sliding seat 511 is slidably arranged on the slide rail 510. The cylinder 50 is arranged on the sliding seat 511. The driving assembly 512 is used to drive the sliding seat 511 to move on the slide rail 510; The driving assembly 512 directly uses the cylinder 50, or uses a motor and a lead screw, in which the sliding seat 511 cooperates with the lead screw, or a motor cooperates with a synchronous pulley and a synchronous belt, in which the sliding seat 511 is connected to the synchronous belt.

[0051] And a hemming block 52, which is connected to the driving shaft of the cylinder 50 and has a hemming hook portion 520. In this embodiment, the hemming hook portion 520 is L-shaped. The hemming hook portion 520 can pass through the corresponding hemming opening 40, and a space for the hemming hook portion 520 to act is provided between the ultrasonic template 2 and the hemming plate 4, without interfering with the folding action of the hemming hook portion 520 on the bag mouth.

[0052] Further, the ultrasonic template 2 includes a front plate portion 20 and a rear plate portion 21. The width of the front plate portion 20 is smaller than that of the rear plate portion 21. The bag-supporting cover 3 is arranged at the front end of the front plate portion 20. A third guiding portion 210 is arranged at the front end of the rear plate portion 21. In this embodiment, the third guiding portion 210 includes an upper inclined surface and a lower inclined surface, and the upper inclined surface and the lower inclined surface gradually approach each other from the rear end to the front end. Since after the folding blocks 52 fold the two side edges of the woven bag opening, the middle part of the woven bag opening may not be completely folded, the upper and lower surfaces of the woven bag opening can be completely folded through the third guiding portion 210.

[0053] Wherein, in the height direction of the ultrasonic template 2, the size of the ultrasonic template 2 is smaller than that of the bag-supporting cover 3 and smaller than that of the folding plate 4. It should be understood that this size is the thickness to facilitate the folding of the woven bag opening.

[0054] Through the above mechanism, the rapid folding of the woven bag opening is realized, the production efficiency of the product is improved, and at the same time, the mechanism has a simple structure, reducing the failure rate and manufacturing cost of the equipment.

[0055] And an upper ultrasonic hot-pressing assembly 6 and a lower ultrasonic hot-pressing assembly 7, which are respectively arranged above and below the ultrasonic template 2. Both include an ultrasonic pressing head 61, a lifting structure and a driver. The driver drives the lifting structure to make the ultrasonic pressing head 61 move towards the ultrasonic template 2 for hot-pressing the folded-mouth woven bag. Among them, the ultrasonic pressing head 61 should be arranged on the rear plate portion 21, and the lifting structure can refer to the moving assembly 51.

[0056] Secondly, the ultrasonic pressing head 61 adopts a commonly used ultrasonic hot-pressing device in the art. Since in the prior art, generally the ultrasonic pressing head 61 is inserted into the bag opening for hot-pressing from the inside to the outside, there are limitations on the size of the ultrasonic pressing head 61, resulting in high manufacturing requirements and high costs. In this embodiment, however, the ultrasonic pressing head 61 performs hot-pressing from the outside to the inside of the woven bag, so there are no limitations on the size of the ultrasonic pressing head 61, and most ultrasonic pressing heads 61 on the market can be used.

[0057] Processing method of this woven bag mouth curling machine: First, put the mouth of the woven bag into the front end of the ultrasonic template 2 and exceed the hemming opening 40 by a certain length. Generally, the length exceeding the hemming opening 40 is the folding part. This feeding is generally carried out manually. Then, through the control of the driving component 512 and the cylinder 50, first move the hemming hook part 520 to the side of the bag mouth, generally to a position close to the edge of the bag mouth. Then, the hemming hook part 520 presses against the side of the bag mouth to make the edge of the bag mouth fold inwards towards the inside of the bag mouth once. Then, move the hemming hook part 520 towards the inside of the hemming opening 40 to make the edge of the bag mouth that has been folded once fold towards the inner side wall of the bag mouth a second time. Then, the two hemming hook parts 520 hook the two sides of the bag mouth on the inner side of the two sides of the bag mouth and move towards the rear end of the ultrasonic template 2, that is, towards the rear plate part 21. During the movement, the edge of the bag mouth that has been folded a second time passes through the third guiding part 210 to achieve complete folding, that is, the woven bag is in the state as shown in Figure 6 the figure. Then, the upper ultrasonic hot pressing component 6 and the lower ultrasonic hot pressing component 7 are used to hot press and fix the folded bag mouth of the woven bag. Finally, the processed woven bag is taken off. Thus, the rapid folding and hot pressing fixation of the bag mouth of the woven bag are realized, the production efficiency of the product is improved, and at the same time, the structure of the equipment is simple, the failure rate and manufacturing cost of the equipment are reduced, which helps the initial development of some small and micro enterprises.

[0058] In summary, after reading this detailed disclosure, those skilled in the art can understand that the foregoing detailed disclosure can be presented only by way of example and may not be restrictive. Although not explicitly stated here, those skilled in the art can understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be proposed by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0059] In addition, it should be understood that in the foregoing description of the embodiments of this application, for the purpose of helping to understand a feature, for the purpose of simplifying this application, this application combines various features in a single embodiment, drawing, or its description. However, this does not mean that the combination of these features is necessary. Those skilled in the art may very well mark out some of the devices as separate embodiments for understanding when reading this application. That is to say, the embodiments in this application can also be understood as the integration of multiple sub-embodiments. And it is also established when the content of each sub-embodiment is less than all the features of a single foregoing disclosed embodiment.

[0060] Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Therefore, the embodiments disclosed in the present application are merely examples and not limitations. Those skilled in the art can adopt alternative configurations according to the embodiments in the present application to implement the application in the present application. Therefore, the embodiments of the present application are not limited to the embodiments precisely described in the application.

Claims

1. A folding mechanism for a woven bag ring machine, characterized in that: include: An ultrasonic template, wherein the ultrasonic template has a front end and a rear end, and the front end can be inserted into the bag opening of the woven bag; A bag support cover, which is arranged at the front end of the ultrasonic template; Folding plates, which are arranged on both sides of the bag support cover and have folding openings; And two folding assemblies, the two folding assemblies are respectively arranged on both sides of the ultrasonic template, which include: A cylinder, wherein a driving shaft of the cylinder is arranged toward a direction corresponding to the hemming plate; A moving assembly, the moving assembly is used to drive the cylinder to move from the front end to the rear end of the ultrasonic template; And a folding block, which is connected to the driving shaft of the cylinder and has a folding hook portion, which can pass through the corresponding folding opening, and a space for the folding hook portion to move is arranged between the ultrasonic template and the folding plate.

2. The folding mechanism of a woven bag ring machine according to claim 1, characterized in that: The ultrasonic template, the bag support cover and the folding plate are integrated.

3. The folding mechanism of a woven bag ring machine according to claim 1, characterized in that: There are two bag-supporting covers arranged on both sides of the front end of the ultrasonic template. The bag-supporting covers are adjustable along the width direction of the ultrasonic template. When the bag-supporting covers are adjusted, the folding plates move accordingly.

4. The folding mechanism of a woven bag ring-opening machine according to claim 3, characterized in that: The front end of the folding plate is provided with a first guide portion, and the folding opening is U-shaped and is provided at the rear end of the folding plate.

5. A folding mechanism for a woven bag ring-opening machine according to claim 1, 2 or 3, characterized in that: A second guide portion is arranged at the front end of the bag support cover.

6. The folding mechanism of a woven bag ring machine according to claim 5, characterized in that: The second guide portion is an arc-shaped surface which gradually shrinks from the rear end to the front end.

7. The folding mechanism of a woven bag ring-opening machine according to claim 3, characterized in that: In the height direction of the ultrasonic template, the size of the ultrasonic template is smaller than the size of the bag support cover and smaller than the size of the folding plate.

8. The folding mechanism of a woven bag ring machine according to claim 1, characterized in that: The ultrasonic template comprises a front plate portion and a rear plate portion, the width of the front plate portion is smaller than the width of the rear plate portion, the bag support cover is arranged at the front end of the front plate portion, and the front end of the rear plate portion is provided with a third guide portion.

9. Woven bag ring machine, characterized in that: It comprises a folding mechanism, an upper ultrasonic hot-pressing assembly and a lower ultrasonic hot-pressing assembly of a woven bag hoop machine as claimed in any one of claims 1 to 8; The upper ultrasonic hot pressing assembly and the lower ultrasonic hot pressing assembly are respectively arranged above and below the ultrasonic template, and both include an ultrasonic pressure head, a lifting structure and a driver. The driver drives the lifting structure to move the ultrasonic pressure head toward the ultrasonic template to perform hot pressing on the folded woven bag.

10. The woven bag ring opening machine according to claim 9, characterized in that: The machine comprises a frame, on which a fixing plate connected with the rear end of the ultrasonic template is arranged, and on which a plurality of connecting holes are arranged along the width direction of the ultrasonic template.

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