Bag opening device with synchronous linear speed

Abstract

The utility model relates to the field of packaging machinery, in particular to a linear speed synchronous bag opening device which comprises an adsorption wheel and an integrated adsorption ring, a plurality of arc-shaped convex parts are arranged on the adsorption wheel, first adsorption holes are formed in the arc-shaped convex parts, a plurality of arc-shaped grooves are formed in the adsorption ring, and second adsorption holes are formed in the groove walls of the arc-shaped grooves. The adsorption wheel and the adsorption ring are arranged in a rolling relation mode, the linear speed of the arc-shaped protruding parts and the linear speed of the arc-shaped grooves are synchronous, and the arc-shaped protruding parts can sequentially enter the corresponding arc-shaped grooves. And a bag opening gap is formed between the corresponding arc-shaped convex part and the groove wall of the arc-shaped groove. According to the utility model, not only can the correspondence of the adsorption holes be better, but also the adsorption bag opening can be more stably and effectively carried out, and the adsorption bag opening quality can be effectively improved; in addition, manufacturing and assembling can be facilitated, it can be guaranteed that the production quality is very high, the good adsorption effect can be obtained, and the stability and reliability are very high; therefore, the bag opening device with the synchronous linear speed has very high reliability and applicability.

Description

Technical Field

[0001] The utility model relates to the field of packaging machinery, in particular to a bag opening device. Background Art

[0002] At present, in order to improve the efficiency of heat-sealing film packaging, it is usually achieved by using heat-sealing film packaging equipment. Most of the existing heat-sealing film packaging equipment sequentially uses a film feeding device, a folding device, a sealing edge device, a bagging device, a sealing device, and a cutting device to complete the packaging of related products with a roll of packaging film. Among them, the folding device folds the two ends of the horizontal packaging film upward in the length direction, and the sealing edge device sequentially hot-presses a plurality of vertically sealed portions with a slightly wider width in the length direction of the folded packaging film, so that the packaging film between adjacent vertically sealed portions can form a packaging bag (each packaging bag is connected side by side in sequence). The packaging bag is used to hold related products. It can be seen that the packaging film entering the bagging device is in a folded state (the packaging film forming the packaging bag). Coupled with the presence of vertically sealed portions on the packaging bag, most of the bag openings of the packaging bag are attached together, which will cause the packaging bag to be unable to be directly used to hold the product to be packaged. Therefore, it is necessary to open the attached packaging bags to achieve bagging.

[0003] For this reason, the existing bagging device generally consists of a bag opening device and a lifting and filling device. Among them, most of the existing bag opening devices use large adsorption rollers and small adsorption rollers that roll against each other to open the packaging bag. Specifically: a number of adsorption holes are respectively opened on the outer circumferential surfaces of the large and small adsorption rollers, and the large and small adsorption rollers roll horizontally against each other, so that the packaging bag passes between the large and small adsorption rollers, and the two pieces of packaging film forming the packaging bag are respectively adsorbed through the adsorption holes on the large and small adsorption rollers, so that the packaging bag can be opened, which is convenient for the filling end of the lifting and filling device to be inserted into the packaging bag, and then the bagging requirement can be achieved. After filling, the bag opening of the packaging bag is heat-sealed by the sealing device, and finally the independent packaging bag can be obtained by cutting the middle part of the vertically sealed portion through the cutting device.

[0004] Among them, on the existing large adsorption roller, a number of adsorption blocks with adsorption holes are arranged in a circular array on its circumference to form an adsorption effect on the circumference of the large adsorption roller through these adsorption blocks. Although this can meet the adsorption requirements, it is difficult to avoid errors during the production of the adsorption blocks. Coupled with the fact that it is also difficult to avoid errors during the installation of the adsorption blocks, this not only increases the manufacturing and assembly difficulty of the large adsorption roller, but also easily leads to unstable production quality of the large adsorption roller, thus easily resulting in poor quality of adsorption bag opening. At the same time, this also easily causes the situation that the adsorption holes on the large and small adsorption rollers do not correspond correctly when rotating, which will also lead to poor quality of adsorption bag opening.

[0005] Therefore, it is highly necessary to design a bag-opening device with synchronous linear velocity to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present utility model is to solve the above problems and deficiencies, and provide a bag-opening device with synchronous linear velocity. This bag-opening device with synchronous linear velocity can not only make the correspondence of the adsorption holes better, but also make the adsorption bag-opening more stable and effective, and can effectively improve the quality of adsorption bag-opening; moreover, it is also convenient for manufacturing and assembly, and is conducive to ensuring a very high production quality, which is also conducive to obtaining a good adsorption effect, and its stability and reliability are very high; therefore, this bag-opening device with synchronous linear velocity has very high reliability and applicability.

[0007] The technical solution of the present utility model is realized as follows:

[0008] A bag-opening device with synchronous linear velocity, which is characterized in that it includes an adsorption wheel and an integral adsorption ring. Among them, a number of arc-shaped convex parts are annularly arranged on the outer circumferential surface of the adsorption wheel, and at least one first adsorption hole is opened on the outer wall of each arc-shaped convex part. A number of arc-shaped grooves are annularly arranged on the outer circumferential surface of the adsorption ring, and at least one second adsorption hole is opened on the groove wall of each arc-shaped groove; the adsorption wheel and the adsorption ring are arranged in a rolling relationship, and the linear velocities of the arc-shaped convex parts and the arc-shaped grooves are synchronized, and each arc-shaped convex part can sequentially enter the corresponding arc-shaped groove; when the arc-shaped convex part enters the arc-shaped groove, a bag-opening gap is reserved between the arc-shaped convex part and the groove wall of the arc-shaped groove.

[0009] Preferably, the bag-opening device with synchronous linear velocity further includes a first suction ring and a first rotary driving mechanism. The first rotary driving mechanism is arranged inside the first suction ring or penetrates through the first suction ring. The adsorption wheel is sleeved on the power output end of the first rotary driving mechanism, and the end surface of the adsorption wheel is in sliding contact with the end surface of the first suction ring. A first suction slit is opened on the end surface of the first suction ring in contact with the adsorption wheel. The inner port of the first adsorption hole penetrates to the end surface where the adsorption wheel is in contact with the first suction ring, and the inner ports of the first adsorption holes can be sequentially docked and communicated with the first suction slit as the adsorption wheel rotates.

[0010] Preferably, a number of first adsorption holes are opened on the outer wall of each arc-shaped convex part, and each first adsorption hole is divided into at least one group of first adsorption hole groups arranged horizontally side by side; when there are more than two rows of first adsorption hole groups, each first adsorption hole group is arranged vertically side by side.

[0011] Preferably, the bag opening device with synchronized linear velocity further includes a second suction ring and a second rotary drive mechanism. The second rotary drive mechanism is arranged inside the second suction ring or penetrates the second suction ring. The adsorption ring is sleeved on the power output end of the second rotary drive mechanism, and the end face of the adsorption ring is in sliding contact with the end face of the second suction ring. A second suction slit is formed on the end face of the second suction ring in contact with the adsorption ring. The inner ports of the second adsorption holes penetrate to the end face where the adsorption ring contacts the second suction ring, and the inner ports of the second adsorption holes can be sequentially docked and communicated with the second suction slit as the adsorption ring rotates.

[0012] Preferably, a plurality of second adsorption holes are formed on the groove walls of each arc-shaped groove, and the second adsorption holes are divided into at least one group of second adsorption hole groups arranged horizontally side by side; when there are more than two rows of second adsorption hole groups, the second adsorption hole groups are arranged vertically side by side.

[0013] Preferably, the second rotary drive mechanism includes a second drive motor, a positioning seat, and a rotating ring body. The second drive motor is arranged on the positioning seat. The rotating ring body is horizontally rotatably arranged on the positioning seat, and the rotating ring body is drivingly connected to the second drive motor. The adsorption ring is sleeved on the rotating ring body.

[0014] Preferably, the rotating ring body includes a driving ring and a positioning ring. The driving ring is horizontally rotatably embedded in the positioning seat, and the driving ring is drivingly connected to the second drive motor. The positioning ring is horizontally arranged on the top surface of the driving ring, and the adsorption ring is sleeved on the positioning ring.

[0015] Preferably, a receiving ring groove is formed on the outer circumferential surface of the positioning ring. A plurality of mounting holes are formed on the top surface of the positioning ring and vertically penetrate the receiving ring groove downward, and the mounting holes are arranged in a circular array around the rotation center line of the positioning ring.

[0016] Preferably, the second suction slit is a circular arc-shaped suction slit and is arranged around the axial center of the second suction ring.

[0017] Preferably, the width of the bag opening gap gradually decreases and then gradually increases in the circumferential direction of the adsorption ring.

[0018] Advantages of the present utility model: On this bag-opening device, arc-shaped convex portions and arc-shaped grooves are respectively provided on the adsorption wheel and the adsorption ring, and first adsorption holes and second adsorption holes are respectively formed in the arc-shaped convex portions and the arc-shaped grooves. Also, the linear velocities of the arc-shaped convex portions and the arc-shaped grooves are synchronized, and a bag-opening gap is reserved between the groove walls of the arc-shaped convex portions and the arc-shaped grooves. This not only enables better correspondence between the first adsorption holes and the second adsorption holes, but also can use the arc-shaped convex portions and the arc-shaped grooves to limit the packaging film forming the packaging bag and enhance the adsorption effect on the packaging film, so that adsorption bag-opening can be carried out more stably, comprehensively and effectively, and it can effectively improve the quality of adsorption bag-opening. An integrated adsorption ring is adopted, and a plurality of arc-shaped grooves are annularly arranged on the outer circumferential surface of the adsorption ring, and at least one second adsorption hole is formed in the groove wall of each arc-shaped groove. This not only facilitates the manufacturing and installation of the adsorption ring, but also facilitates the production of the bag-opening device to have high quality, thereby facilitating the reduction of the manufacturing and assembly difficulty and error, and further facilitating the obtaining of higher adsorption quality. The stability and reliability of this bag-opening device are very high, and it can have higher reliability and applicability. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the bag-opening device in the present utility model.

[0020] Figure 2 It is one of the structural schematic diagrams of the adsorption wheel detached from the first rotation driving mechanism in the present utility model.

[0021] Figure 3 It is another structural schematic diagram of the adsorption wheel detached from the first rotation driving mechanism in the present utility model.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the adsorption wheel in the present utility model.

[0023] Figure 5 It is a sectional structural schematic diagram of the first air suction ring in the present utility model.

[0024] Figure 6 It is a structural schematic diagram of the adsorption ring assembled with the second rotation driving mechanism in the present utility model.

[0025] Figure 7 It is a structural schematic diagram of the adsorption ring detached from the second rotation driving mechanism in the present utility model.

[0026] Figure 8 It is a sectional structural schematic diagram of the second rotation driving mechanism in the present utility model.

[0027] Figure 9 It is a partial structural schematic diagram of the second rotation driving mechanism in the present utility model.

[0028] Figure 10 This is a schematic cross-sectional structure diagram of the second air suction ring in the present utility model.

[0029] Figure 11 This is a schematic three-dimensional structure diagram of the adsorption ring in the present utility model.

[0030] Figure 12 This is a schematic structure diagram of the arc-shaped convex part entering the arc-shaped groove in the present utility model.

[0031] Figure 13 This is a schematic structure diagram of the use state of the present utility model.

[0032] Figure 14 This is a schematic structure diagram of the assembly of the positioning ring and the lifting and filling mechanism in the present utility model.

[0033] Figure 15 This is a schematic structure diagram of the lifting and filling mechanism detaching from the positioning ring in the present utility model.

[0034] Figure 16 This is a schematic structure diagram of the lifting and filling mechanism in the present utility model. Detailed implementation manners

[0035] As Figure 1 shown, a bag-opening device with synchronous linear velocity in the present utility model includes an adsorption wheel 1 and an integrated adsorption ring 2. A plurality of arc-shaped convex parts 11 are annularly and arrayedly arranged on the outer circumferential surface of the adsorption wheel 1, and at least one first adsorption hole 12 is opened on the outer wall of each arc-shaped convex part 11. A plurality of arc-shaped grooves 21 are annularly and arrayedly opened on the outer circumferential surface of the adsorption ring 2, and at least one second adsorption hole 22 is opened on the groove wall of each arc-shaped groove 21;

[0036] The adsorption wheel 1 and the adsorption ring 2 are arranged in a horizontal rolling relationship, and the linear velocities of the arc-shaped convex parts 11 and the arc-shaped grooves 21 are synchronized, and each arc-shaped convex part 11 can sequentially enter the corresponding arc-shaped groove 21; when the arc-shaped convex part 11 enters the arc-shaped groove 21, a bag-opening gap 10 is reserved between the arc-shaped convex part 11 and the groove wall of the arc-shaped groove 21.

[0037] On this bag-opening device, arc-shaped convex portions 11 and arc-shaped groove portions 21 are respectively provided on the adsorption wheel 1 and the adsorption ring 2, and first adsorption holes 12 and second adsorption holes 22 are respectively formed in the arc-shaped convex portions 11 and the arc-shaped groove portions 21. The linear velocities of the arc-shaped convex portions 11 and the arc-shaped groove portions 21 are also synchronized, and a bag-opening gap 10 is reserved between the groove walls of the arc-shaped convex portions 11 and the arc-shaped groove portions 21. This can not only make the correspondence between the first adsorption holes 12 and the second adsorption holes 22 better, but also use the arc-shaped convex portions 11 and the arc-shaped groove portions 21 to limit the packaging film forming the packaging bag and enhance the adsorption effect on the packaging film, so that the adsorption bag-opening can be carried out more stably, comprehensively and effectively, and the quality of the adsorption bag-opening can be effectively improved. An integrated adsorption ring 2 is adopted, and a plurality of arc-shaped groove portions 21 are annularly arranged on the outer circumferential surface of the adsorption ring 2, and at least one second adsorption hole 22 is formed in the groove wall of each arc-shaped groove portion 21. This can not only facilitate the manufacture and installation of the adsorption ring 2, but also facilitate the production of the bag-opening device with high quality, so as to facilitate reducing the manufacturing and assembly difficulty and error, and further facilitate obtaining higher adsorption quality. The stability and reliability of this bag-opening device are very high, and it can have higher reliability and applicability.

[0038] Synchronizing the linear velocities of the arc-shaped convex portions 11 and the arc-shaped groove portions 21 can enable each arc-shaped convex portion 11 to accurately enter the corresponding arc-shaped groove portion 21 in sequence. Specifically: the corresponding arc-shaped convex portions 11 and arc-shaped groove portions 21 rotate with the adsorption wheel 1 and the adsorption ring 2 respectively. First, the arc-shaped convex portions 11 and the arc-shaped groove portions 21 approach each other, then the arc-shaped convex portions 11 enter the interior of the arc-shaped groove portions 21, and finally the arc-shaped convex portions 11 and the arc-shaped groove portions 21 move away from each other. When a packaging bag passes between the adsorption wheel 1 and the adsorption ring 2, the above-mentioned approaching and separating processes of the arc-shaped convex portions 11 and the arc-shaped groove portions 21 can be used to accurately open the packaging bag, thus meeting the actual use requirements.

[0039] As Figures 1 to 5 As shown, the bag-opening device with synchronized linear velocities further includes a first suction ring 3 and a first rotary drive mechanism 4. The first rotary drive mechanism 4 is arranged inside the first suction ring 3 or penetrates the first suction ring 3. The adsorption wheel 1 is sleeved on the power output end of the first rotary drive mechanism 4, and the end face of the adsorption wheel 1 is in sliding contact with the end face of the first suction ring 3. A first suction slit 31 is formed on the end face of the first suction ring 3 in contact with the adsorption wheel 1. The inner ports of the first adsorption holes 12 penetrate to the end face of the adsorption wheel 1 in contact with the first suction ring 3, and the inner ports of the first adsorption holes 12 can be sequentially docked and communicated with the first suction slit 31 as the adsorption wheel 1 rotates. Such an assembly structure is very simple and reliable, which can not only facilitate manufacturing, but also enable the adsorption wheel 1 to produce a stable and reliable adsorption effect, thus helping to further improve the reliability and applicability of this bag-opening device.

[0040] As Figures 1 to 4 shown, the first air suction slit 31 is an arc-shaped one arranged around the rotation center line of the adsorption wheel 1. In this way, a plurality of first adsorption holes 12 can be opened on the arc-shaped convex part 11 at the same time. When the inner ports of the first adsorption holes 12 penetrate through to the end face of the adsorption wheel 1, the first adsorption holes 12 on the same arc-shaped convex part 11 can all obtain stable suction force, so as to better meet the requirements of actual use.

[0041] As Figure 1 shown in Figure 2 and

[0042] shown in Figures 1 to 5 and

[0043] shown in Figure 3 and Figure 5 shown in

[0044] As Figure 3 shown in Figure 4 and

[0045] shown in Figure 4As shown, a plurality of first adsorption holes 12 are formed in the outer wall of each arc-shaped convex portion 11, and the first adsorption holes 12 are divided into at least one group of first adsorption hole groups 13 arranged horizontally side by side; when there are more than two rows of the first adsorption hole groups 13, the first adsorption hole groups 13 are arranged vertically side by side. In this way, each arc-shaped convex portion 11 can play a more comprehensive and effective adsorption role on the packaging film forming the packaging bag, so as to more effectively adsorb and open the packaging bag, which helps to further improve the reliability and applicability of the bag-opening device.

[0046] As Figure 1 , Figures 6 to 8 shown, the bag-opening device with synchronous linear velocity further includes a second suction ring 5 and a second rotary drive mechanism 6. The second rotary drive mechanism 6 is arranged inside the second suction ring 5 or penetrates through the second suction ring 5. The adsorption ring 2 is sleeved on the power output end of the second rotary drive mechanism 6, and the end face of the adsorption ring 2 is in sliding contact with the end face of the second suction ring 5. A second suction slot 51 is formed in the end face of the second suction ring 5 in contact with the adsorption ring 2. The inner ports of the second adsorption holes 22 penetrate to the end face of the adsorption ring 2 in contact with the second suction ring 5, and the inner ports of the second adsorption holes 22 can be sequentially docked and communicated with the second suction slot 51 as the adsorption ring 2 rotates. Such an assembly structure is very simple and reliable, which not only facilitates manufacturing, but also enables the adsorption ring 2 to produce a stable and reliable adsorption effect, thus helping to further improve the reliability and applicability of the bag-opening device.

[0047] The power output end of the second rotary drive mechanism 6 rotates horizontally, and the adsorption ring 2 is sleeved on the power output end of the second rotary drive mechanism 6 in a horizontal state. In this way, the adsorption ring 2 rotates horizontally, so as to meet the requirement of sucking the bag.

[0048] As Figure 11 shown, a plurality of second adsorption holes 22 are formed in the groove wall of each arc-shaped groove 21, and the second adsorption holes 22 are divided into at least one group of second adsorption hole groups 23 arranged horizontally side by side; when there are more than two rows of the second adsorption hole groups 23, the second adsorption hole groups 23 are arranged vertically side by side. In this way, each arc-shaped groove 21 can play a more comprehensive and effective adsorption role on the packaging film forming the packaging bag, so as to more effectively adsorb and open the packaging bag, which helps to further improve the reliability and applicability of the bag-opening device.

[0049] As Figures 6 to 9As shown, the second rotation drive mechanism 6 includes a second drive motor 61, a positioning seat 62, and a rotating ring body 63. The second drive motor 61 is disposed on the positioning seat 62. The rotating ring body 63 is horizontally rotatably disposed on the positioning seat 62, and the rotating ring body 63 is drivingly connected to the second drive motor 61. The adsorption ring 2 is sleeved on the rotating ring body 63. Such a second rotation drive mechanism 6 is very simple and reliable, which not only facilitates manufacturing and controlling the manufacturing cost, but also enables the installation and positioning of the adsorption ring 2 to be very stable and reliable, and enables the rotation of the adsorption ring 2 to be very stable and reliable, thereby helping to further improve the reliability and applicability of the bag opening device.

[0050] As Figures 6 to 9 shown, the rotating ring body 63 includes a driving ring 631 and a positioning ring 632. The driving ring 631 is horizontally rotatably fitted on the positioning seat 62, and the driving ring 631 is drivingly connected to the second drive motor 61. The positioning ring 632 is horizontally disposed on the top surface of the driving ring 631. The adsorption ring 2 is sleeved on the positioning ring 632. Such a rotating ring body 63 not only helps to improve the stability of installation and positioning, but also facilitates the manufacture of the positioning ring 632 suitable for the installation of the adsorption ring 2 and other components, thereby helping to further improve the reliability and applicability.

[0051] In the actual manufacturing process, the driving ring 631 and the second drive motor 61 can be drivingly connected through a gear set, and the gear set is installed inside the positioning seat 62. A gear can be sleeved on the driving ring 631 or teeth can be provided on its circumferential surface, so as to facilitate the formation of gear meshing. This can not only meet the requirements of stable driving connection, but also achieve the function of shielding and protection, thereby helping to improve the smoothness of horizontal rotation and delay the aging speed, and further helping to improve the reliability.

[0052] As Figure 8 shown, a plurality of relief holes 633 penetrating through to its inner wall are formed on the outer circumferential surface of the lower end of the positioning ring 632, and at least one through hole 634 penetrating through to the bottom surface of the positioning ring 632 is formed on the lower hole wall of each relief hole 633. The through hole 634 can be penetrated by a screw, so that the positioning ring 632 can be stably fixed on the driving ring 631 by using a screw (not shown in the figure), thereby helping to improve the stability and reliability of the installation and positioning of the positioning ring 632. The relief holes 633 can provide sufficient space for tools such as wrenches to act on the screws, thereby helping to improve the convenience of screw installation and disassembly, and further helping to improve the convenience of installation and disassembly of the positioning ring 632.

[0053] As Figure 8As shown, positioning pin holes 630 are respectively formed in the lower hole walls of two relief holes 633 that are symmetrical about the axial center line of the positioning ring 632. The positioning pin holes 630 can accommodate positioning pins (not shown in the figure). In this way, the positioning ring 632 can be positioned on the driving ring 631 by using the positioning pins, thereby facilitating the improvement of the accuracy of the installation and positioning of the positioning ring 632. When forming the positioning pin holes 630 in the hole wall of the relief hole 633, through holes 634 may not be formed in the lower hole wall of the relief hole 633.

[0054] As Figure 8 shown, a receiving ring groove 635 is formed on the outer circumferential surface of the positioning ring 632. A plurality of mounting holes 636 that vertically penetrate the receiving ring groove 635 downward are formed on the top surface of the positioning ring 632, and the mounting holes 636 are arranged in an annular array around the rotation center line of the positioning ring 632. The receiving ring groove 635 can accommodate relevant transmission components of the lifting and filling mechanism. The mounting holes 636 can allow the relevant transmission components of the lifting and filling mechanism to slide through and achieve precise positioning. This can not only improve safety, but also reduce the aging speed and improve the accuracy of the filling operation, thereby contributing to further improving the reliability and applicability of the bag-opening device.

[0055] As Figure 8 shown, during the actual manufacturing process, a plurality of vertical guiding holes 637 that penetrate to the inner wall of the positioning ring 632 can also be formed at the bottom of the receiving ring groove 635. This can facilitate enhancing the vertical guiding effect on the relevant transmission components of the lifting and filling mechanism, thereby facilitating further improvement of the applicability and reliability.

[0056] As Figures 14 to 16 shown, a vertically arranged guiding cylinder 638 is fixedly provided on the positioning seat 62 inside the positioning ring 632. An annular cam groove 639 is formed on the outer circumferential surface of the guiding cylinder 638. The lower surfaces of the annular cam groove 639 are not at the same height. The inner end of the lifting and filling mechanism 20 passes through the vertical guiding holes 637 and is placed in the annular cam groove 639. At least one guiding roller 201 that is in rolling contact with the lifting and filling mechanism 20 in the vertical guiding holes 637 is sleeved on the lifting and filling mechanism 20 in the vertical guiding holes 637. At least one lifting roller 202 that is in rolling contact with the lifting and filling mechanism 20 in the annular cam groove 639 is sleeved on the lifting and filling mechanism 20 in the annular cam groove 639. In this way, the lifting action of the lifting and filling mechanism 20 can be very accurate and stable, thereby meeting the actual use requirements.

[0057] As Figure 8 With Figure 10As shown, the second suction slit 51 is an arc-shaped suction slit, and the second suction slit 51 is arranged around the axial center of the second suction ring 5. By using an arc-shaped suction slit, it is beneficial to adsorb the packaging bag throughout the entire stage from opening to filling completion, which is conducive to making the filling process proceed more smoothly, and this helps to further improve the reliability and applicability of the bag opening device.

[0058] As Figure 1 shown, the outer diameter of the adsorption ring 2 is larger than the outer diameter of the adsorption wheel 1. In this way, under the condition of meeting the normal bag opening requirements, the raw material usage can be controlled and the space occupation can be reduced, so that the bag opening device has stronger applicability.

[0059] As Figure 10 shown, the second suction ring 5 is a hollow ring, and the hollow part of the hollow ring forms an annular hole 52. A docking convex tube 53 communicating with the annular hole 52 is arranged on the outer wall of the second suction ring 5, and the lower end of the second suction slit 51 penetrates through to the annular hole 52. The docking convex tube 53 can facilitate the docking of the upper suction fan, and the annular hole 52 is conducive to generating stable and reliable suction force for the second suction slit 51, which helps to further improve the reliability of the bag opening device.

[0060] As Figure 11 shown, in the actual manufacturing process, the second adsorption holes 22 arranged vertically side by side can adopt the same inner port that penetrates downward to the bottom surface of the adsorption ring 2. This can not only ensure better adsorption effect but also facilitate processing.

[0061] As Figure 10 shown, a fixing convex ring 54 is arranged on the inner circumferential surface of the second suction ring 5, and at least one vertically penetrating through hole 55 is opened on the fixing convex ring 54. The through hole 55 can be penetrated by a screw. This can not only facilitate fixing the fixing convex ring 54 on the positioning seat 62 by a screw (not shown in the figure) but also facilitate hiding the screw, thus helping to improve the stability and convenience of the installation and positioning of the bag opening device.

[0062] As Figure 6 And Figure 11 shown, a contact convex ring 24 is integrally formed on the lower end surface of the adsorption ring 2, and the adsorption ring 2 can be slidably lapped on the second suction ring 5 through the contact convex ring 24. This can ensure that the sliding lap is very smooth and stable, thus helping to improve the reliability.

[0063] As Figure 11As shown in the figure, at least one countersunk hole 25 penetrating through the outer wall of the adsorption ring 2 between adjacent arc-shaped grooves 21 to the inner wall of the adsorption ring 2 is provided. The countersunk hole 25 can be penetrated and accommodated by a screw, which not only facilitates the stable fixation of the adsorption ring 2 on the positioning ring 632 by a screw (not shown in the figure), but also avoids the screw protruding outside and affecting the suction bag, thereby facilitating the improvement of the convenience and stability of assembly.

[0064] As Figure 11 shown in the figure, not all countersunk holes 25 exist between adjacent arc-shaped grooves 21, but several countersunk holes 25 exist on the circumference of the adsorption ring 2, so that the four sides of the adsorption ring 2 can be fixed, thereby meeting the requirements of stable installation.

[0065] As Figure 12 shown in the figure, the width of the bag-opening gap 10 gradually decreases and then gradually increases in the circumferential direction of the adsorption ring 2. This can more accurately and stably open the packaging bag, thereby helping to further improve the bag-opening quality.

[0066] As Figure 11 shown in the figure, the bending amplitude of the arc-shaped convex portion 11 is greater than the bending radian of the arc-shaped groove 21, so that the above-mentioned bag-opening gap 10 can be formed, thereby meeting the requirements of actual manufacturing and use.

[0067] As Figure 13 shown in the figure, during the actual manufacturing process, a number of lifting and filling mechanisms 20 arranged in a circular array are installed on the rotating ring body 63 (only one is shown in the figure), and part of the transmission components of each lifting and filling mechanism 20 are hidden in the accommodation ring groove 635. A quantitative feeding mechanism 30 capable of feeding materials to the lifting and filling mechanism 20 is arranged above the lifting and filling mechanism 20 (the feeding mechanism 30 and the lifting and filling mechanism 20 together form a lifting and filling device). This can achieve the purpose of adsorbing and opening the packaging bag and filling materials, thereby meeting the requirements of actual use.

[0068] The above embodiments are the preferred embodiments of the present invention. All structures similar to the present invention and equivalent changes made shall fall within the protection scope of the present invention.

Claims

1. A bag opening device with synchronized line speed, characterized in that: It comprises an adsorption wheel (1) and an integrated adsorption ring (2), wherein A plurality of arcuate protrusions (11) are arranged in an annular array on the outer circumferential surface of the adsorption wheel (1), and at least one first adsorption hole (12) is provided on the outer wall of each arcuate protrusion (11); a plurality of arcuate grooves (21) are arranged in an annular array on the outer circumferential surface of the adsorption ring (2), and at least one second adsorption hole (22) is provided on the groove wall of each arcuate groove (21); The adsorption wheel (1) and the adsorption ring (2) are arranged in a rolling relationship, and the linear speeds of the arc-shaped protrusion (11) and the arc-shaped groove (21) are synchronized, and each arc-shaped protrusion (11) can enter the corresponding arc-shaped groove (21) in sequence; when the arc-shaped protrusion (11) enters the arc-shaped groove (21), a bag opening gap (10) is reserved between the arc-shaped protrusion (11) and the groove wall of the arc-shaped groove (21).

2. The bag opening device with synchronized line speed according to claim 1, characterized in that: It also comprises a first suction ring (3) and a first rotary drive mechanism (4), wherein the first rotary drive mechanism (4) is arranged inside the first suction ring (3) or is arranged through the first suction ring (3), the adsorption wheel (1) is sleeved on the power output end of the first rotary drive mechanism (4), and the end surface of the adsorption wheel (1) is in sliding contact with the end surface of the first suction ring (3), a first suction slit (31) is provided on the end surface of the first suction ring (3) in contact with the adsorption wheel (1), the inner end of the first adsorption hole (12) is extended to the end surface of the adsorption wheel (1) in contact with the first suction ring (3), and the inner end of each first adsorption hole (12) can be connected to the first suction slit (31) in sequence as the adsorption wheel (1) rotates.

3. The bag opening device with synchronized line speed according to claim 1 or 2, characterized in that: A plurality of first adsorption holes (12) are formed on the outer wall of each arc-shaped convex portion (11), and each first adsorption hole (12) is divided into at least one group of first adsorption hole groups (13) arranged horizontally side by side; when there are more than two rows of first adsorption hole groups (13), each first adsorption hole group (13) is arranged vertically side by side.

4. The bag opening device with synchronized line speed according to claim 1, characterized in that: The invention also comprises a second air suction ring (5) and a second rotary drive mechanism (6). The second rotary drive mechanism (6) is arranged inside the second air suction ring (5) or through the second air suction ring (5). The adsorption ring (2) is sleeved on the power output end of the second rotary drive mechanism (6), and the end surface of the adsorption ring (2) is in sliding contact with the end surface of the second air suction ring (5). A second air suction slit (51) is provided on the end surface of the second air suction ring (5) in contact with the adsorption ring (2). The inner end of the second adsorption hole (22) is penetrated to the end surface of the adsorption ring (2) in contact with the second air suction ring (5), and the inner end of each second adsorption hole (22) can be connected with the second air suction slit (51) in sequence as the adsorption ring (2) rotates.

5. The bag opening device with synchronized line speed according to claim 1 or 4, characterized in that: A plurality of second adsorption holes (22) are formed on the groove wall of each arc-shaped groove (21), and each second adsorption hole (22) is divided into at least one second adsorption hole group (23) arranged horizontally side by side; when there are more than two rows of second adsorption hole groups (23), each second adsorption hole group (23) is arranged vertically side by side.

6. The bag opening device with synchronized line speed according to claim 4, characterized in that: The second rotation drive mechanism (6) comprises a second drive motor (61), a positioning seat (62), and a rotating ring body (63); the second drive motor (61) is arranged on the positioning seat (62); the rotating ring body (63) is arranged on the positioning seat (62) so as to be horizontally rotatable, and the rotating ring body (63) is connected to the second drive motor (61) in a driving manner; and the adsorption ring (2) is sleeved on the rotating ring body (63).

7. The bag opening device with synchronized line speed according to claim 6, characterized in that: The rotating ring body (63) comprises an active ring (631) and a positioning ring (632); the active ring (631) is horizontally rotatably embedded in the positioning seat (62) and the active ring (631) is drivingly connected to the second driving motor (61); the positioning ring (632) is horizontally arranged on the top surface of the active ring (631); and the adsorption ring (2) is sleeved on the positioning ring (632).

8. The bag opening device with synchronized line speed according to claim 7, characterized in that: A ring receiving groove (635) is provided on the outer circumferential surface of the positioning ring (632), and a plurality of mounting holes (636) are provided on the top surface of the positioning ring (632) and vertically penetrate the ring receiving groove (635) downward, and the mounting holes (636) are arranged in a ring array around the rotation center line of the positioning ring (632).

9. The bag opening device with synchronized line speed according to claim 4, characterized in that: The second air suction slit (51) is an arc-shaped air suction slit, and the second air suction slit (51) is arranged around the axial center of the second air suction ring (5).

10. The bag opening device with synchronized line speed according to claim 1, characterized in that: The width of the bag opening gap (10) gradually decreases in the circumferential direction of the adsorption ring (2) and then gradually increases.

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