Cotton bale bagging and opening device and bagging and sealing system

Abstract

The utility model discloses a cotton bale bagging and opening device and a bale bagging and sealing system, the cotton bale bagging and opening device comprises an opening platform, the rear part of the opening platform is provided with a first row of lower sucking discs or a sucking hole array which is used for sucking the lower bag surface at the bag opening of a cotton bale bag flatly paved on the opening platform, and a second row of lower sucking discs or a sucking hole array which is used for sucking the lower bag surface at the bag opening of the cotton bale bag flatly paved on the opening platform; the first lifting mechanism is located above the open platform; the upper opening assembly is installed on the first lifting mechanism, and a first row of upper suction cups are arranged on the upper bag face, corresponding to the bag opening of the cotton bale sleeve bag flatly laid on the opening platform, of the upper opening assembly. The opening device for the cotton bale bag is suitable for automatic opening of the cotton bale bag.

Description

Technical Field

[0001] The utility model relates to a device for opening a cotton bag cover, which is convenient for inserting a cover device. The utility model also relates to a cover packing system equipped with the cotton bag cover opening device. Background Art

[0002] The baler on the cotton bale processing production line needs to bag the cotton bales after baling. There are two main types of cotton bags currently used, one is cotton bagging and the other is plastic bagging. The appearance of plastic bagging is mainly used to realize the automation of cotton bagging. At the same time, in order to meet the realization of automatic bagging of cotton bagging, some cotton bagging currently has a hot melt adhesive sheet set at the predetermined position of the bag mouth to overcome the problem that the cotton cloth cannot be picked up by the vacuum suction cup due to its air permeability. Overall, given that fewer and fewer workers can be invested in the cotton processing production line, the automation of the cotton processing production line is an inevitable direction.

[0003] At present, in the known bagging and sealing system, the cotton bale bagging is usually manually put on the bagging device, and then the cotton bale is bagged. Specifically, the bagging device is a rectangular tube or an equivalent rectangular tube structure as a whole. In the traditional bagging and sealing system, the bagging device is usually fixed on the bread conveying path. Generally speaking, after the bagging is completed, the cotton bale and the cotton bale bag are often relatively tightly combined, and the principle of the bagging of the bagging device is to first put the cotton bale bag on the bagging device from the outlet end to the inlet end of the bagging device, and the cotton bale passes through the bagging device under the push of the bag pusher. In this process, the cotton bale first contacts with the bag surface of the cotton bale bag that is not set on the bagging device. At this time, the cotton bale bag needs to be reliably combined with the bagging device and cannot be loosened. Then the bag pusher continues to push the cotton bale forward, and the cotton bale contacts the bottom of the bag of the cotton bale bag. The pusher moves forward again to remove the cotton bale bag from the bagging device. It can be seen from this that the cotton bale bagging and the bale putting device must be relatively tightly combined to ensure that the cotton bale bagging and the cotton bale put in are tightly combined. In other words, when manually putting the bag on the bale putting device, it is necessary to overcome the binding force of the "tight combination", which makes bagging very difficult and usually requires two workers to cooperate on the left and right sides of the bale putting device to perform the bagging operation at the same time. The bagging efficiency is low and there is also a certain degree of danger.

[0004] Adapted to the bagging device, if the machine bagging is used, the first thing to overcome is how to open the cotton bag in the initial state. Specifically, whether it is cotton bagging or plastic bagging, they are often stacked in layers during storage and transportation. At this time, the two large bag surfaces are attached together. When bagging manually, the bag mouth needs to be rubbed open, and then the cotton bag is opened manually, and then put on the bagging device. Relatively speaking, the two bag surfaces of cotton bagging are easy to separate, while for plastic bagging, the affinity of the two bag surfaces is relatively good. People with a little life experience know that plastic bags that have not been opened are difficult to rub open when the hands are relatively dry, which also makes manual bagging relatively difficult.

[0005] In some implementations, it is mainly used for opening the mouth of a cotton bag, which often requires pre-hooking the upper bag surface and the lower belt surface of the cotton bag, and then opening the bag mouth to a relatively small angle, and then using a bag opener to open the bag mouth. The bag opener needs to be inserted into the bag mouth, which will interfere with the bag putter during bagging, making bagging relatively difficult. Utility Model Content

[0006] The utility model aims to provide an opening cotton bag cover opening device which is suitable for automatically opening the cotton bag cover. The utility model also provides a cover bag sealing system equipped with the cotton bag cover opening device.

[0007] According to a first aspect of an embodiment of the utility model, a cotton bag opening device is provided, comprising:

[0008] An opening platform, the rear of which is provided with a first row of lower suction cups or suction hole arrays for sucking the lower bag surface at the bag opening of the cotton bag cover laid flat on the opening platform;

[0009] A first lifting mechanism, located above the opening platform;

[0010] The upper opening assembly is installed on the first lifting mechanism, and the upper bag surface of the upper opening assembly corresponding to the bag opening of the cotton bag cover laid flat on the opening platform is provided with a first row of upper suction cups.

[0011] Optionally, the open platform is further provided with at least one row of second lower suction cups in front of the first row of lower suction cups.

[0012] Optionally, at least one row of second upper suction cups is provided on the upper opening assembly in front of the first row of upper suction cups.

[0013] Optionally, the lower suction cup array formed by the first row of lower suction cups and the second row of lower suction cups has a density that gradually decreases from back to front;

[0014] Correspondingly, the upper suction cup array formed by the first row of upper suction cups and the second row of upper suction cups has an arrangement density that gradually decreases from the back to the front.

[0015] Optionally, the upper suction cups in the first row of upper suction cups and the lower suction cups in the first row of lower suction cups correspond one to one and their centers are aligned.

[0016] Optionally, the open platform has a table panel, and a through hole is opened on the table panel for exposing the suction cup body provided on the table panel from bottom to top.

[0017] Optionally, the diameter of the lower suction cup equipped with the opening platform and the diameter of the upper suction cup equipped with the upper opening assembly are both 35 mm.

[0018] Optionally, in the front-rear direction, the opening platform and the upper opening assembly are statically arranged or the opening platform and the upper opening assembly contain carriers carrying corresponding upper suction cups and lower suction cups;

[0019] A bagging action mechanism is correspondingly provided for driving the carrier to move in the front-rear direction.

[0020] Optionally, a blowing device is provided on the rear side of the opening platform to blow air into the cotton bale bag during the cotton bale bag opening process.

[0021] Optionally, the blowing device comprises:

[0022] Bracket plate for installing piping;

[0023] The second lifting mechanism is used to drive the bracket plate to rise and fall.

[0024] Optionally, it further comprises bag pressing components arranged on both sides of the rear of the opening platform, so as to press and hold the cotton bag from the left and right sides after the cotton bag is put on the bagging device in place.

[0025] Optionally, the bag pressing component comprises:

[0026] Linear drive mechanism, providing lateral linear motion;

[0027] The holding member is installed on the output component of the linear drive mechanism.

[0028] Optionally, the pressing member comprises:

[0029] A pressing plate, used for installing the pressing member on the output member, and having a guide hole;

[0030] A guide rod, guided in the guide hole;

[0031] A pressure block, mounted on the end of the guide rod;

[0032] The reset component is installed between the pressure block and the pressure plate.

[0033] Optionally, the pressing blocks are rubber blocks, and each holding member is equipped with two rubber blocks, which are arranged in parallel in the up and down directions.

[0034] Optionally, the row spacing of the suction cups provided on the opening platform and the upper opening assembly is 455 mm to 855 mm.

[0035] According to a second aspect of the embodiment of the utility model, a bagging and sealing system is provided, comprising the cotton bagging and opening device according to the first aspect of the embodiment of the utility model.

[0036] In the embodiment of the utility model, the cotton bag opening device provided includes two main parts, the lower main part, wherein the lower main part has an opening platform, and the opening platform is used to support the cotton bag. Furthermore, the opening platform is provided with a first row of lower suction cups at the rear corresponding to the bag opening of the cotton bag, and the lower bag surface of the bag opening of the cotton bag is sucked when the cotton bag is loaded on the opening platform. The upper opening assembly installed on the first lifting mechanism is provided with an upper suction cup corresponding to the upper bag surface at the bag opening of the cotton bag. After the lower suction cup sucks the lower bag surface of the bag opening, the first lifting mechanism descends, so that the upper suction cup sucks the upper bag surface at the bag opening of the cotton bag, and then the first lifting mechanism rises to open the bag opening. This opening method is completely realized by the mechanical part and is suitable for the automatic opening of the cotton bag. And for example, for plastic bags, although the two bag surfaces are relatively tightly attached, the suction of the bag surface by the suction cup generates a force point for pulling apart, which is conducive to the opening of the cotton bag, and the efficiency is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the adaptation structure of the cotton bag opening device and the bagging device in one embodiment.

[0038] Figure 2 Schematic diagram of the structure of a cotton bag opening device in one embodiment.

[0039] Figure 3 Schematic diagram of the upper opening assembly structure located on the first lifting mechanism in one embodiment.

[0040] Figure 4 Schematic diagram of the opening platform structure in one embodiment.

[0041] Figure 5 Schematic diagram of the structure of the bag opening blowing device in one embodiment.

[0042] Figure 6 Schematic diagram of the bag pressing structure in one embodiment.

[0043] Figure 7 Schematic diagram of the support base structure in one embodiment.

[0044] Figure 8 Schematic diagram of the structure of the first lifting mechanism driving device in one embodiment.

[0045] In the figure: 1. bagging platform, 2. bagging device, 3. bag pressing component, 4. opening part, 5. opening platform, 6. discharge extension part, 7. bag opening air blowing device.

[0046] 31. Pressing plate, 32. Rubber pressing block, 33. Return spring, 34. Guide rod, 35. Bag pressing cylinder, 36. Mounting slot plate, 37. Second elongated hole.

[0047] 41. Upper suction cup, 42. Upper longitudinal beam, 43. Vertical arm, 44. Support seat, 45. Rack, 46. Gear, 47. Motor reducer integrated machine, 48. Linear rail pair.

[0048] 51. Frame platform, 52. Table top, 53. Lower single suction cup, 54. First through hole, 55. Lower double suction cup, 56. Second through hole, 57. Legs.

[0049] 71. Fixed vertical plate, 72. First elongated hole, 73. Lifting cylinder, 74. Push plate, 75. Support plate, 76. Blowing pipe.

[0050] 441. Slider, 442. Oil filling hole, 443. Sliding seat plate, 444. First reinforcing plate, 445. Second reinforcing plate, 446. Fixed plate. DETAILED DESCRIPTION

[0051] It should be known that in the field of cotton bale wrapping technology, there are definite front, back, left and right. Generally speaking, the conveying direction of the cotton bale is the front and back direction of the wrapping device 2, and the bag mouth of the cotton bale bag laid on the open platform 5 is opened backward to facilitate the wrapping on the wrapping device 2. When the cotton bale bag is completely wrapped on the wrapping device 2, the cotton bale enters from the inlet of the wrapping device 2, that is, its rear end, and then passes through the outlet of the wrapping device 2, thereby entering the cotton bale bag wrapped on the wrapping device 2, until the cotton bale contacts the bottom of the cotton bale bag, and the cotton bale that is further pushed forward will remove the cotton bale bag from the wrapping device 2, thereby entering the wrapping station.

[0052] It can be seen that in the embodiment of the present invention, its basic orientation still conforms to the general orientation of the production line in the mechanical field, that is, the direction along the production line is called the front-to-back direction, also known as the longitudinal, long direction or head-to-tail direction. Furthermore, based on this reference system, the front end of the packing platform 1 is aligned with the rear end of the opening platform 5, and the workstation corresponding to the opening platform 5 is the downstream workstation of the workstation corresponding to the packing platform 1. Therefore, the end of the opening platform 5 adjacent to the packing platform 1 is the rear end, and Figure 1 One end corresponding to the discharge extension portion 6 is the front end of the packaging platform 1.

[0053] Based on the general flow direction on the production line, forward movement is the normal feeding direction, while backward movement is the direction opposite to the normal feeding direction. For example, when the cotton bale bag is put on the bagging device 2 after opening, there are two forms. One form is that the bagging device 2 does not move, and the cotton bale bag opening device carrying the opened cotton bale bag can move backward to put the cotton bale bag on the bagging device 2. In another form, the cotton bale bag opening device is only responsible for the opening of the cotton bale bag, so that the bag opening of the cotton bale bag after opening is aligned with the outlet of the bagging device 2, and then the bagging device 2 moves forward and partially enters the cotton bale bag to achieve bagging.

[0054] On the production line, when the front and back are determined, the left and right are also determined. The left and right directions are perpendicular to the front and back directions. The left and right directions are often called lateral directions in some applications. In addition, the left and right directions are also called transverse directions and width directions. The front, back, left and right determine the reference plane, which is a virtual plane, not a physical plane. Those skilled in the art should have a clear understanding of this.

[0055] Generally, the direction perpendicular to the reference plane is also called the height direction. The height direction does not mean the plumb bob direction. In the mechanical field, the height is more often expressed in relative terms, especially when corresponding to up and down. In particular, the rise and fall in the mechanical field usually refers to the change in height, not up or down.

[0056] In the embodiment of the utility model, after the bag surface is sucked by the upper and lower suction cups, the lower suction cup is kept stationary to make the lower bag surface still, and the upper suction cup 41 moves upward to pull the cotton bag opening. It can be seen that the cotton bag opening device based on the embodiment of the utility model is not suitable for pure cotton bags, but can be used for cotton bags suitable for suction cup picking, such as cotton bags with rubber, plastic, hot melt adhesive and other membranes at predetermined positions, and such bags have also been widely used in the industry.

[0057] As for plastic bags, polyethylene plastic bags are the most common ones. It should be known that in the embodiments of the present invention, the main focus is on the opening of the cotton bale bag, and does not involve the improvement or selection of the cotton bale bag itself. However, it should also be known that plastic bags all meet the opening objects of the cotton bale bag opening device in the embodiments of the present invention.

[0058] Compared with cotton bagging, the two bag surfaces of plastic bagging are relatively tightly connected, but based on the pulling after the upper suction cup 41 and the lower suction cup suck the relevant bag surfaces, the mouth can still be opened more conveniently. In this process, if the two bag surfaces of the plastic bag can be completely separated (except for the edge sealing part), it is a better choice, but it should also be known that when the cotton bag is put on the bagging device 2, the unseated part between the bag surfaces will be stretched open. Therefore, in the embodiment of the utility model, the cotton bag opening device provided focuses on the opening of the cotton bag, rather than completely opening it, but it does not rule out the visual method of completely stretching the cotton bag.

[0059] In addition, most of the current bagging devices 2 are rectangular tube-shaped bagging devices 2, but Shandong Swan Cotton Machinery Co., Ltd. has developed a new bagging device with a tapered front part before the cotton bale enters. Therefore, in some applications, the requirements for the opening of the cotton bagging before bagging will also be different. The bagging device 2 with a tapered front part has relatively low requirements for the opening quality of the cotton bagging. Figure 1 The bagging device 2 shown in the figure has a relatively small outlet, which is equivalent to a shrinkage. When the cotton bag is put on from the outlet, the bag mouth of the cotton bag can be opened relatively small and can still be put on the bagging device 2 smoothly.

[0060] Another point needs to be explained. As mentioned above, the realization of the packing action can be achieved by moving the packing device 2 in the front-to-back direction, or by moving the component for sucking the bag opening in the front-to-back direction. Figure 3 For example, the upper suction cup 41 shown in FIG. Figure 3 The illustrated structure has one degree of freedom, namely the degree of freedom in the up-down direction, and it can also be configured to have two degrees of freedom, the second degree of freedom can be the degree of freedom in the front-back direction, based on which the upper suction cup 41 can be lifted and lowered to open, and bagging can be achieved based on the movement in the front-back direction. Then accordingly, for Figure 4 For example, the lower double suction cup 55 shown in the example only needs to be configured with one degree of freedom, that is, the degree of freedom in the front-to-back direction, so as to be used for bagging operations in the front-to-back direction. Under this condition, for example, the second through hole 56 can be configured as an elongated hole extending in the front-to-back direction of the opening platform 5.

[0061] In addition, for example Figure 4 The table panel 52 illustrated in the figure can itself form a slide plate that moves forward and backward through the support of, for example, tracks arranged in the front and rear directions. The table panel 52 carries, for example, a lower double suction cup 55 to cooperate with the upper suction cup 41 to achieve the bagging action.

[0062] exist Figure 1In the illustrated structure, the opening portion 4 and the opening platform 5 are both statically arranged in the front-to-back direction, while the bagging device 2 is movable in the front-to-back direction. Under this condition, the main purpose of the cotton bale bagging opening device is to open the cotton bale bagging, and the bagging is achieved by the movement of the bagging device 2 in the front-to-back direction. As far as the cotton bale bagging opening device is concerned, the difficulty of implementation is reduced.

[0063] It should be noted that in the mechanical field, a platform does not necessarily provide a strict plane, but is merely a naming method for a given structure.

[0064] Figure 1 and Figure 4 In the illustrated structure, the open platform 5 has a table panel 52, but it should be understood that no special requirements are imposed on whether a plate is used for support, whether for the support of the cotton bales or for the flattening of the cotton bale bags, although a flat table panel 22 is used in the preferred embodiment.

[0065] In some embodiments, the table panel 22 may be an assembled panel, that is, a plurality of slats are joined together, wherein the slats used to support, for example, the lower double suction cups 55 may be movable panels that can move forward and backward, and the rest are static panels.

[0066] All the slats are mainly installed on the platform frame 51, as mentioned above, and can be fixedly installed or movably installed.

[0067] Regarding the opening, it is first necessary to ensure that the bag mouth can be opened first. Therefore, a first row of lower suction cups is provided at the rear of the opening platform 5, that is, at the end of the opening platform 5 adjacent to the bagging device 2. Figure 4 The lower double suction cup 55 shown in FIG.

[0068] The row direction here is the horizontal direction of the opening platform 5, that is, the left-right direction; the corresponding column direction is the longitudinal direction of the opening platform 5, that is, the front-back direction. The lower double suction cups 55 are arranged in a horizontal row at the rear of the opening platform 5 to suck the lower bag surface at the bag opening of the cotton bag laid flat on the opening platform. At this time, the lower grabbing of the bag opening of the cotton bag is formed.

[0069] Cooperating with the opening platform 5 is as follows Figure 1 The opening portion 4 shown in the figure generates opening power by means of the lifting of the first lifting mechanism. The lifting mechanism is located above the opening platform 5. Figure 3 For example, the support base 44 shown in the figure is installed on a frame, and the frame can be, for example, a frame of a sealing device after packaging, or can be an independently arranged frame, such as a gantry beam.

[0070] The opening portion 4 comprises an upper opening assembly, which is mounted on the first lifting mechanism. It should be known that the upper opening assembly should be mounted on the output component of the first lifting mechanism.

[0071] The first lifting mechanism may be a linear drive component, such as a hydraulic cylinder, a pneumatic cylinder, a linear motor, etc., which can directly drive the Figure 3 The vertical arm 43 shown in FIG.

[0072] Since the suction cup is used for the opening operation, if the lifting speed of the first lifting mechanism is too fast, the suction cup may be separated from the bag surface of the cotton bag cover. Therefore, in the embodiment of the utility model, a driving mechanism with relatively good driving stability, such as a hydraulic cylinder, is preferred. For example, a pneumatic cylinder has a typical feature of fast response speed, but because its working medium is air, it will not cause pollution and can be used as a relatively inferior choice.

[0073] and then, Figure 3 The illustrated structure also provides a relatively stable first lifting mechanism, specifically a gear rack mechanism. In the figure, the rack 45 is fixed on the vertical arm 43, and the gear 45 meshing with the rack 43 is Figure 8 In the illustrated structure, it is installed on the output shaft of a motor reducer integrated machine 47. Figure 8 In the embodiment, the output shaft is a through shaft, passing through both sides of the reducer housing, and is provided with two gears 46 , so as to mesh with a rack 45 respectively located on both sides of the support seat 44 .

[0074] By decelerating the speed of the reducer, for example, the lifting speed of the vertical arm 43 is relatively slow, thereby ensuring the reliability of the operation of the upper suction cup 41.

[0075] exist Figure 3 In the illustrated structure, a linear rail pair 48 is used between the vertical arm 43 and the support base 44 to provide guidance for the first lifting mechanism.

[0076] As for the nut and screw mechanism, its driving is relatively stable and can also be selected as the first lifting mechanism.

[0077] Furthermore, regarding the upper suction cups 41, the first row of upper suction cups that cooperate with the first row of lower suction cups are also located at the bag opening of the cotton bale bag laid flat on the opening platform 5, and are used to suck the upper bag surface at the bag opening of the cotton bale bag. When performing the opening operation, the cotton bale bag is first laid flat on the bag opening platform 5, and the first row of lower suction cups suck the lower bag surface at the bag opening of the cotton bale bag. The first lifting mechanism in the bag opening part 4 moves downward until the first row of upper suction cups in the upper suction cups 41 carried by it engages with the upper bag surface of the bag opening of the cotton bale bag and sucks the upper bag surface, and then the first lifting mechanism moves upward to a predetermined position to achieve opening.

[0078] In view of the fact that the height requirement of the opening of the object to be opened is determined, therefore, the predetermined position is determined, and even a slight deviation usually has a relatively small impact on the bagging, and the bagging often has an allowable margin.

[0079] It is not easy for the upper and lower bag surfaces of cotton bag to fit together, but it is easy for the upper and lower bag surfaces of plastic bag to fit together. As a consideration, when, for example, the plastic bag is opened based on the first row of lower suction cups and the first row of upper suction cups, it is limited by the opening limit and the relatively long length of the cotton bag (the length of the cotton bag is longer than the length of the cotton bag). Under this condition, there will still be a relatively long bag section in a state where the upper and lower bag surfaces fit together. However, as mentioned above, the purpose of the opening operation is to open the bag. Under this condition, the cotton bag can be bagged on the bagging device 2. During the bagging process, the remaining bag sections that are still in a state of fitting together will also be gradually unfolded.

[0080] It can be seen from the embodiments described below that in some embodiments, a bag mouth blowing device 7 is also provided to assist in the opening operation and improve the success rate of the opening. At the same time, the cotton bagging does not require that the cotton bag is completely covered on the bagging device 2. During the bagging process, as the cotton bag enters the cotton bagging with the help of the bagging device 2, there will be airflow that needs to be discharged, so that the subsequent bag segments will be detached by the positive pressure generated by the discharge of the airflow, which is equivalent to the blowing device 7 assisting the remaining bag segments with the upper and lower bag surfaces in contact.

[0081] As another consideration, when the upper suction cups in the first row move upward, they will be pulled in the reverse direction by the upper bag surface, and the force of the reverse pulling at various locations around the periphery of each upper suction cup 41 varies greatly, especially the front side of the upper suction cup 41 is often subjected to the greatest reverse pulling, and desorption of the upper suction cup 41 is most likely to occur here.

[0082] In summary, as a further option, at least one row of second lower suction cups is provided in front of the first row of lower suction cups on the opening platform 5 to reduce the burden of the first row of lower suction cups used for opening. At the same time, since the lower suction cups on the front side will also suck the lower bag surface, the lower bag surface will not follow the upper bag surface upward, thereby reducing the burden of the first row of upper suction cups, thereby making it easier to ensure the success rate of the opening operation.

[0083] Furthermore, at least one row of second upper suction cups is provided in front of the first row of upper suction cups on the upper opening assembly, which can effectively reduce the burden of the first row of upper suction cups and more easily ensure the success rate of the opening operation.

[0084] Accordingly, in order to improve the success rate of opening, it is necessary to ensure that the suction cups in the first row are not easy to loosen. Figure 4 In the illustrated structure, the first row of lower suction cups adopts a composite suction cup, each of which has two suction cup heads, forming a composite suction cup. Figure 4 The lower double suction cup 55 shown in FIG. 5 can be replaced by two single-head suction cups.

[0085] The arrangement direction of the two suction cup heads on the lower double suction cup 55 is the longitudinal direction of the opening platform 5. When two single-head suction cups are used, the two single-head suction cups are adjacent to each other.

[0086] It should be noted that experiments have shown that increasing the area of ​​a single suction cup will not effectively improve the success rate of adsorption, as a large suction cup area will also increase the probability of desorption. If any edge, such as wrinkles on the bag surface, occurs, the interface between the suction cup and the bag surface may be loose, leading to desorption.

[0087] In addition, the suction cup should not be too small, otherwise its suction force will not be enough to meet the requirements of the cotton bag opening. After screening, the suction cup with a suction cup head diameter of 35mm is the best choice. Suction cup heads of 25mm~45mm can still be used as an available option.

[0088] In addition, regarding the suction cup row spacing, 655mm is the optimal value, and 655mm±200mm is optional.

[0089] In some embodiments, the lower suction cup array formed by the first row of lower suction cups and the second lower suction cups has a density that gradually decreases from back to front. Based on the same considerations, the upper suction cup array formed by the first row of upper suction cups and the second upper suction cups has a density that gradually decreases from back to front. When a relatively small number of suction cups are used, the reliability of adsorption to the bag surface of the cotton bale can still be guaranteed.

[0090] It can be seen from the structure shown in Figure 4 that the front half of the opening platform 5 does not need to be provided with a suction cup at all.

[0091] When the suction cups are sucked and pulled, if the positions of the two bag surfaces of the cotton bag cover are not aligned, the suction cups will be more likely to be detached. Therefore, at least the upper suction cups in the first row of upper suction cups and the lower suction cups in the first row of lower suction cups should correspond to each other and be aligned in the center. In the preferred embodiment, the remaining upper and lower suction cups are also aligned one by one.

[0092] As mentioned above, the part of the open platform 5 used to support the cotton bag cover can be a table panel 52 of a plate-shaped structure, or a roller conveyor or other supporting assembly. For example, a roller conveyor often has gaps between roller shafts, which can be used for the intervention of the lower suction cup. For the table panel 52, a hole needs to be opened on it to expose the lower suction cup body from bottom to top.

[0093] like Figure 4 In the illustrated structure, the table panel 52 is provided with a first through hole 54 and a second through hole 56 for respectively installing different types of lower suction cups.

[0094] In order to further improve the success rate of opening, a blowing device is provided on the rear side of the opening platform. Figure 2 The bag mouth blowing device 7 shown in the figure is used to blow air into the cotton bag during the cotton bag opening process.

[0095] exist Figure 5In the illustrated structure, the blowing device includes:

[0096] The bracket plate 75 is used to install the pipes, such as Figure 5 The blowing pipe 76 shown in the figure may be provided in multiple numbers, with the pipe opening facing forward to face the bag opening of the cotton bag cover, so that during the opening process, air is continuously blown into the cotton bag cover through the bag opening to expand the upper and lower bag surfaces more quickly, thereby reducing the burden on the corresponding suction cups.

[0097] A second lifting mechanism is also provided for driving the support plate 75 to rise and fall, so as to rise or fall to a blowing position during blowing, and to reset after blowing is completed to clear the cotton bale conveying path.

[0098] In the embodiment of the utility model, a bag pressing component 3 is provided on both sides of the rear of the opening platform 5 to press the cotton bale bag from the left and right sides after the cotton bale bag is put on the bagging device 2. As mentioned above, the cotton bale bag does not need to be fully put on the bagging device 2, but partially put on, which is used to reduce the difficulty of putting on. Under this condition, the cotton bale will come into contact with the cotton bale bag when it emerges from the outlet end of the bagging device 2, and the cotton bale bag may be removed from the bagging device 2, and at this time, the cotton bale cannot enter the cotton bale bag completely. The bag pressing component 3 is provided to ensure that the cotton bale bag will not be removed from the bagging device 2 before the cotton bale has fully entered the cotton bale bag.

[0099] Figure 6 In the embodiment, the bag pressing component 3 comprises:

[0100] The linear drive mechanism provides lateral linear motion of the pressing member, which is adapted to the longitudinally arranged bagging device 2 so that the pressing member driven by the bag pressing component 3 is pressed on the side wall plate of the bagging device 2 in a roughly vertical manner.

[0101] exist Figure 6 In the illustrated structure, the holding member comprises:

[0102] A pressing plate 31 is used for installing a pressing member on the output member of the linear drive mechanism and has a guide hole;

[0103] A guide rod 34, guided in the guide hole;

[0104] A pressing block 31 is mounted on the end of a guide rod 34;

[0105] Reset components, such as Figure 6 The return spring 33 shown in the figure is installed between the pressure block 31 and the pressure plate 34, and is sleeved on the guide rod 34. The return spring 33 and the guide rod 34 form a spring guide column.

[0106] Based on the holding member, when the pressing block 31 is pressed on the packager 2, the output member moves further, the reset member is compressed, and the guide rod 34 retreats accordingly. Conversely, when the output member is reset, the guide rod 34 is reset under the action of the reset member.

[0107] Further, the pressing block is a rubber block, such as Figure 6 As shown in the rubber pressing block 32, each pressing member is equipped with two rubber blocks, which are arranged in parallel in the up and down directions to better press and hold the cotton bag sleeved on the sleeve 2.

Claims

1. A cotton bag opening device, characterized in that: include: An opening platform, the rear of which is provided with a first row of lower suction cups or suction hole arrays for sucking the lower bag surface at the bag opening of the cotton bag cover laid flat on the opening platform; A first lifting mechanism, located above the opening platform; The upper opening assembly is installed on the first lifting mechanism, and the upper bag surface of the upper opening assembly corresponding to the bag opening of the cotton bag cover laid flat on the opening platform is provided with a first row of upper suction cups.

2. The cotton bag opening device according to claim 1, characterized in that: The open platform is also provided with at least one row of second lower suction cups in front of the first row of lower suction cups.

3. The cotton bag opening device according to claim 2, characterized in that: At least one row of second upper suction cups is arranged in front of the first row of upper suction cups on the upper opening assembly.

4. The cotton bag opening device according to claim 3, characterized in that: The lower suction cup array formed by the first row of lower suction cups and the second row of lower suction cups has a density that gradually decreases from the back to the front; Correspondingly, the upper suction cup array formed by the first row of upper suction cups and the second row of upper suction cups has an arrangement density that gradually decreases from the back to the front.

5. The cotton bag opening device according to any one of claims 2 to 4, characterized in that: The upper suction cups in the first row of upper suction cups and the lower suction cups in the first row of lower suction cups correspond to each other one by one and their centers are aligned.

6. The cotton bag opening device according to claim 1, characterized in that: The open platform comprises a table panel, and a through hole is formed on the table panel for exposing the suction cup body arranged on the table panel from bottom to top.

7. The cotton bag opening device according to claim 1, characterized in that: The diameter of the lower suction cup equipped with the opening platform and the diameter of the upper suction cup equipped with the upper opening assembly are both 35mm.

8. The cotton bag opening device according to claim 1, characterized in that: In the front-rear direction, the opening platform and the upper opening assembly are statically arranged or the opening platform and the upper opening assembly contain carriers carrying corresponding upper suction cups and lower suction cups; A bagging action mechanism is correspondingly provided for driving the carrier to move in the front-rear direction.

9. The cotton bag opening device according to claim 1, characterized in that: An air blowing device is arranged on the rear side of the opening platform to blow air into the cotton bag during the cotton bag opening process.

10. The cotton bag opening device according to claim 9, characterized in that: The blowing device comprises: Bracket plate for installing piping; The second lifting mechanism is used to drive the bracket plate to rise and fall.

11. The cotton bag opening device according to claim 1, characterized in that: It also includes bag pressing components arranged on both sides of the rear of the opening platform, so as to press and hold the cotton bag from the left and right sides after the cotton bag is put on the bagging device in place.

12. The cotton bag opening device according to claim 11, characterized in that: The bag pressing component comprises: Linear drive mechanism, providing lateral linear motion; The holding member is installed on the output component of the linear drive mechanism.

13. The cotton bag opening device according to claim 12, characterized in that: The pressing member comprises: A pressing plate, used for installing the pressing member on the output member, and having a guide hole; A guide rod, guided in the guide hole; A pressure block, mounted on the end of the guide rod; The reset component is installed between the pressure block and the pressure plate.

14. The cotton bag opening device according to claim 13, characterized in that: The pressing blocks are rubber blocks, and each holding piece is equipped with two rubber blocks, which are arranged in parallel in the up and down directions.

15. The cotton bag opening device according to claim 1, characterized in that: The row spacing of the suction cups equipped with the opening platform and the upper opening assembly is 455mm~855mm.

16. A packaging system, characterized in that: It comprises the cotton bag opening device according to any one of claims 1 to 15.

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