Bag opening device and sealing equipment

Abstract

This invention provides a bag opening device and a packaging device. The bag opening device includes a bag opening mechanism, which includes a first suction cup disposed on both sides of the packaged bag along a predetermined direction and a second suction cup corresponding to the first suction cup. The first and second suction cups each have a closed position that closes the packaged bag. The first and / or second suction cups are movable along the predetermined direction between the closed position and an open position that opens the packaged bag. The projections of the first and second suction cups along the predetermined direction onto a predetermined plane overlap, and the predetermined plane is perpendicular to the predetermined direction. Even if the packaged bag has an electrostatic force that inhibits the opening of the bag opening, the adsorption force of the first and second suction cups on the packaged bag can be greater than the electrostatic force, thereby overcoming the electrostatic force and opening the bag opening, thus allowing the packaged bag to switch to the open state. In summary, the bag opening device provided by this invention can improve the success rate of bag opening.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, specifically to a bag opening device and a packaging equipment having the same. Background Technology

[0002] With the rapid development of China's economy, packaging equipment has become an indispensable part of the food, medical, and daily chemical industries.

[0003] The packaging equipment may include various devices such as a bag opening device, a feeding device, and a packaging device. The bag opening device opens the aluminum bag. Then, the feeding device feeds the ELISA plate into the aluminum bag. Finally, the packaging device seals the opening of the aluminum bag to encapsulate the ELISA plate inside. In this way, the packaging equipment can achieve automated packaging. Existing bag opening devices include at least a pair of aligned suction cups that adhere to both sides of the aluminum bag and then move away from the bag to open it.

[0004] However, the suction forces of the aligned suction cups adhering to the aluminum bag can interfere with each other, resulting in a significant reduction in suction power. Due to potential static electricity on the aluminum bag, the electrostatic force can cause the two sides of the bag opening to stick together. This electrostatic force may exceed the affected suction force, making it impossible for the suction to overcome the static force and open the aluminum bag. Therefore, the success rate of the bag opening device is low, leading to a poor user experience. Utility Model Content

[0005] To at least partially address the problems existing in the prior art, according to one aspect of the present invention, a bag opening device is provided. The bag opening device includes a bag opening mechanism, which includes first suction cups disposed on both sides of a sealed bag along a predetermined direction and second suction cups corresponding to the first suction cups. The first and second suction cups each have a closed position that closes the sealed bag. The first and / or second suction cups are movable along the predetermined direction between the closed position and an open position that opens the sealed bag. The projection portions of the first and corresponding second suction cups along the predetermined direction on a predetermined plane overlap, and the predetermined plane is perpendicular to the predetermined direction.

[0006] For example, the bag opening device further includes a bag supporting mechanism, which includes a bag supporting drive component and a bag supporting component. The bag supporting drive component is used to drive the bag supporting component to extend into the bag opening of the packaged bag in the open state and support it to the bag opening.

[0007] For example, the bag support assembly includes a zigzag plate, and the bag support drive assembly is used to drive the zigzag plate to extend into the bag in the open state to support it to the bag opening in a lateral direction parallel to a predetermined plane, with the opening of the zigzag plate facing the inside of the bag opening in the lateral direction.

[0008] For example, the bag-supporting drive assembly includes a bag-supporting drive sub-assembly and a base. One of the base and the inverted plate is provided with a circular hole extending along an axis perpendicular to a predetermined plane, and the other is provided with a first rotating shaft that can be inserted into the circular hole and rotated. The bag-supporting drive sub-assembly is used to drive the inverted plate to rotate about the axis into the packaging bag in the open state, so as to support it to the bag opening in the lateral direction.

[0009] For example, one of the base and the U-shaped plate is provided with an arc-shaped hole extending around the axis, and the other is provided with a second rotating shaft that is inserted into the arc-shaped hole and movable along the arc-shaped hole.

[0010] For example, the base is provided with a channel extending in the longitudinal direction. The bag support drive sub-assembly is used to drive the inverted plate to extend out of the channel to support the bag opening in the lateral direction, and to drive the inverted plate to move into the channel. The channel is constructed such that when the inverted plate is supported to the bag opening in the lateral direction, an object is allowed to enter the packaging bag through the channel. The longitudinal direction is parallel to a predetermined plane and perpendicular to the lateral direction.

[0011] For example, the bag support assembly includes two symmetrically arranged bag support members, and the bag support drive assembly is used to drive the two bag support members to move in opposite directions to extend into the packaged bag in the open state and support it to both sides of the bag opening in the lateral direction, which is parallel to a predetermined plane.

[0012] For example, the projections of the first suction cup and its corresponding second suction cup onto a predetermined plane along a predetermined direction overlap by half.

[0013] According to another aspect of the present invention, a packaging device is also provided. The packaging device includes a feeding device and a bag opening device as described above, wherein the feeding device is used to feed the target material into a target position inside a packaged bag that is in an open state.

[0014] For example, the packaging apparatus further includes a separation device for separating the target material located inside the packaging bag from the feeding device so that the target material remains inside the packaging bag.

[0015] For example, the separating device includes a pressing mechanism and a stopping mechanism. The pressing mechanism is disposed above the packaging bag for pressing the packaging bag downward to squeeze the target material at the target position through the packaging bag and the feeding device. The stopping mechanism is used to block the end face of the target material facing the discharge direction of the feeding device when the target material is squeezed, so that the target material is disengaged from the feeding device exiting the packaging bag in the discharge direction, so that the target material remains in the packaging bag.

[0016] For example, the pressing mechanism includes a pressing drive and a floating component, the pressing drive being used to drive the floating component to press the packaged bag downwards.

[0017] For example, the stop mechanism includes a stop drive assembly and a stop assembly. The stop drive assembly is used to drive the stop assembly to move between a passage position that allows the feeding device to feed the target material into the open packaging bag along the feeding direction and a stop position that abuts the end face. The feeding direction is opposite to the discharging direction.

[0018] For example, the stop mechanism is also configured as a bag-supporting mechanism, wherein when the stop component is in the passage position, it extends into the bag opening of the open packaging bag and supports the bag opening.

[0019] Because the projections of the first and second suction cups onto the predetermined plane overlap along a predetermined direction, their adsorption forces on the sealed bag can be prevented from interfering with each other, thus avoiding a decrease in adsorption force. In this way, even if the sealed bag has an electrostatic force that inhibits opening, the adsorption force of the first and second suction cups on the sealed bag can still be greater than the electrostatic force, thereby overcoming the electrostatic force to open the bag and allowing the sealed bag to switch to the open state. In summary, the bag opening device provided by this embodiment can improve the success rate of bag opening, thus facilitating smooth subsequent operations and providing a better user experience.

[0020] This utility model description introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0021] The advantages and features of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0023] Figure 1 This is a perspective view of a portion of the structure of a packaging device according to an exemplary embodiment of the present invention;

[0024] Figure 2 for Figure 1 A partial perspective view of the packaging equipment shown in the figure;

[0025] Figure 3 for Figure 2 A perspective view of the bag opening mechanism shown in the figure;

[0026] Figure 4 for Figure 2 A perspective view of the bag-supporting mechanism shown in the figure; and

[0027] Figure 5 for Figure 4 A partial perspective view of the bag-supporting mechanism is shown in the figure.

[0028] The above figures include the following reference numerals:

[0029] 100. Bag opening device; 200. Bag opening mechanism; 211. First suction cup; 212. First suction cup driver; 213. First suction cup base; 221. Second suction cup; 222. Second suction cup driver; 223. Second suction cup base; 300. Bag supporting mechanism; 310. Bag supporting drive assembly; 311. Bag supporting drive sub-assembly; 312. Base; 313. Bag supporting drive component; 314. Connector; 315. Round hole; 316. Waist hole 317. Arc-shaped hole; 318. Channel; 320. Bag support assembly; 330. C-shaped plate; 331. First plate; 332. Second plate; 333. Third plate; 334. Opening; 335. First rotating shaft; 336. Second rotating shaft; 337. C-shaped end; 400. Feeding device; 500. Pressing mechanism; 510. Pressing drive component; 520. Floating assembly; 521. Fixed plate; 522. Floating plate; 523. Elastic component. Detailed Implementation

[0030] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0031] According to one aspect of the present invention, a bag-opening device is provided. The bag-opening device can open the opening of a packaging bag, thereby facilitating the entry of target materials such as enzyme-linked immunosorbent assay (ELISA) plates and / or desiccants into the packaging bag through the opening. The bag-opening device can be applied to any suitable equipment, including but not limited to packaging equipment. Therefore, according to another aspect of the present invention, a packaging device is also provided. The bag-opening device and packaging device of embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0032] like Figures 1 to 3As shown, the bag opening device 100 may include a bag opening mechanism 200. The bag opening mechanism 200 may include a first suction cup 211 and a second suction cup 221. The first suction cup 211 and the second suction cup 221 may be positioned on both sides of the packaged bag along a predetermined direction ZZ. The predetermined direction ZZ may be vertical. The first suction cup 211 and the second suction cup 221 may be positioned one-to-one along the predetermined direction ZZ. The first suction cup 211 and the second suction cup 221 may be used to adsorb the side of the packaged bag facing them. The packaged bag may be any type of packaged bag known in the art or that may appear in the future. For example, the packaged bag may include a rectangular bag or a circular bag, or any suitable shape; the packaged bag may include a packaged bag made of any suitable material, such as an aluminum bag or a plastic bag. For example, the packaged bag may include a rectangular packaged aluminum bag. The first suction cup 211 and the second suction cup 221 may each have a closed position. When both the first suction cup 211 and the second suction cup 221 are in the closed position, the packaged bag may be in a closed state. The bag opening of the packaged bag in the closed state is closed. The first suction cup 211 and / or the second suction cup 221 can move between a closed position and an open position along a predetermined direction ZZ. When the first suction cup 211 and / or the second suction cup 221 are in the open position, they can open the packaging bag. The opening of the packaging bag is open. That is, at least one of the first suction cup 211 and the second suction cup 221 can move between the closed position and the open position along the predetermined direction ZZ, thereby enabling the first suction cup 211 and the second suction cup 221 to move closer to each other and further away along the predetermined direction ZZ. In some embodiments, the first suction cup 211 and the second suction cup 221 can move between the closed position and the open position along the predetermined direction ZZ, respectively. The first suction cup 211 can be moved between the closed position and the open position by any suitable means such as manual drive, cylinder drive, or linear motor drive. Exemplarily, the bag opening mechanism 200 may also include a first suction cup drive member 212. The driving end of the first suction cup driver 212 can be connected to the first suction cup 211 to drive the first suction cup 211 to move between a closed position and an open position. The first suction cup driver 212 may include any suitable driver such as a cylinder or a linear motor. The second suction cup 221 can be moved between the closed position and the open position by any suitable method such as manual driving, cylinder driving, or linear motor driving. For example, the bag opening mechanism 200 may also include a second suction cup driver 222. The driving end of the second suction cup driver 222 can be connected to the second suction cup 221 to drive the second suction cup 221 to move between a closed position and an open position. The second suction cup driver 222 may include any suitable driver such as a cylinder or a linear motor.

[0033] In practical applications, the first suction cup 211 and the second suction cup 221 can be in the closed position, thereby adsorbing the side of the sealed bag facing them, which is in the closed state. Then, the first suction cup 211 and / or the second suction cup 221 can move to the open position along a predetermined direction ZZ. In this way, the first suction cup 211 and the second suction cup 221 can move away from each other along the predetermined direction ZZ, thereby opening the bag opening and putting the bag in the open state. After the operation of the feeding device 400 and other structures is completed, the first suction cup 211 and the second suction cup 221 can also return to the closed position, thereby closing the bag opening again and putting the bag in the closed state. Of course, the first suction cup 211 and the second suction cup 221 can also directly release the adsorption force on the bag, allowing the bag opening to close automatically.

[0034] A predetermined plane perpendicular to a predetermined direction ZZ is defined. This predetermined plane can be a plane defined by the following transverse direction XX and longitudinal direction YY. The transverse direction XX and longitudinal direction YY can be perpendicular to each other. The projections of the first suction cup 211 and its corresponding second suction cup 221 along the predetermined direction ZZ onto the predetermined plane can partially overlap. This partial overlap can include overlapping half, three-quarters, or two-thirds, etc. If the projections of the first suction cup 211 and the second suction cup 221 along the predetermined direction ZZ onto the predetermined plane do not overlap at all (i.e., are completely offset), when the first suction cup 211 and the second suction cup 221 are in the closed position, neither of them has a base on the other side of the packaged bag to support it, thus they cannot effectively adsorb the packaged bag. Only when the projections of the first suction cup 211 and the second suction cup 221 along the predetermined direction ZZ onto the predetermined plane partially overlap, and when the first suction cup 211 and the second suction cup 221 are in the closed position, can they serve as bases for each other to support the packaged bag, thus they can adsorb the packaged bag. Because the projections of the first suction cup 211 and the second suction cup 221 along the predetermined direction ZZ on the predetermined plane overlap, the mutual influence of their adsorption forces on the sealed bag can be avoided, preventing a decrease in adsorption force. Thus, even if the sealed bag has an electrostatic force that inhibits opening, the adsorption force of the first suction cup 211 and the second suction cup 221 on the sealed bag can be greater than the electrostatic force, thereby overcoming the electrostatic force to open the bag and allowing the sealed bag to switch to the open state. In summary, the bag opening device 100 provided in this embodiment of the invention can improve the success rate of bag opening, thus facilitating smooth subsequent operations and providing a better user experience.

[0035] For example, such as Figure 3As shown, the projections of the first suction cup 211 and its corresponding second suction cup 221 along the predetermined direction ZZ on the predetermined plane can overlap by half. When the projection overlap is too small, the area of ​​the first suction cup 211 and its corresponding second suction cup 221 as bases to each other is small, which is not conducive to adsorbing the packaged bag when the first suction cup 211 and its corresponding second suction cup 221 are in the closed position, thus making it impossible to open the bag opening smoothly. When the projection overlap of the first suction cup 211 and its corresponding second suction cup 221 along the predetermined direction ZZ on the predetermined plane is too large, the mutual influence of their adsorption forces on the packaged bag will increase, which will make the adsorption force easily less than the electrostatic force, and it will also be impossible to open the bag opening smoothly. Therefore, when the projections of the first suction cup 211 and its corresponding second suction cup 221 along the predetermined direction ZZ on the predetermined plane overlap by half, the success rate of opening the bag is higher. For example, the first suction cup 211 and its corresponding second suction cup 221 can be offset by half a distance along the lateral direction XX, thereby achieving half overlap of their projections along the predetermined direction ZZ on the predetermined plane.

[0036] For example, such as Figure 3 As shown, the first suction cup 211 may include any number, such as one, two, three, or more. The number of second suction cups 221 may be the same as the number of first suction cups 211. In some embodiments, the first suction cup 211 may include a plurality of suction cups spaced apart along the lateral direction XX. Similarly, the second suction cups 221 may include a plurality of suction cups spaced apart along the lateral direction XX. The plurality of first suction cups 211 may be arranged one-to-one with the plurality of second suction cups 221 along a predetermined direction ZZ, and the projections of the corresponding first suction cups 211 and second suction cups 221 along the predetermined direction ZZ on a predetermined plane may partially overlap. With this arrangement, the first suction cups 211 and second suction cups 221 can adsorb the packaged bag at multiple positions, thereby facilitating the opening of the bag. This embodiment is particularly suitable for opening the opening of a packaged bag with a large size along the lateral direction XX. The bag opening mechanism 200 may also include a first suction cup seat 213 and a second suction cup seat 223. The plurality of first suction cups 211 may be disposed on the first suction cup seat 213. The first suction cup base 213 can drive multiple first suction cups 211 to move synchronously between a closed position and an open position along a predetermined direction ZZ. The driving end of the first suction cup driver 212 can be connected to the first suction cup base 213 to drive the multiple first suction cups 211 to move synchronously between a closed position and an open position along a predetermined direction ZZ. Multiple second suction cups 221 can be disposed on a second suction cup base 223. The second suction cup base 223 can drive the multiple second suction cups 221 to move synchronously between a closed position and an open position along a predetermined direction ZZ. The driving end of the second suction cup driver 222 can be connected to the second suction cup base 223 to drive the multiple second suction cups 221 to move synchronously between a closed position and an open position along a predetermined direction ZZ.

[0037] For example, such as Figures 1 to 2 as well as Figures 4 to 5 As shown, the bag opening device 100 may further include a bag supporting mechanism 300. The bag supporting mechanism 300 may include a bag supporting drive assembly 310 and a bag supporting assembly 320. The drive end of the bag supporting drive assembly 310 may be connected to the bag supporting assembly 320. The bag supporting drive assembly 310 may be disposed outside the sealed bag. The bag supporting drive assembly 310 may be used to drive the bag supporting assembly 320 into the bag opening of the sealed bag in the open state and support it to the bag opening. After the following feeding operations are completed, the bag supporting drive assembly 310 may also be used to drive the bag supporting assembly 320 out of the sealed bag. This facilitates the movement of the sealed bag to other positions for subsequent operations. The bag supporting drive assembly 310 may employ various types of drive assemblies known in the art or that may emerge in the future, including but not limited to cylinder drive assemblies or motor drive assemblies. The structure of the bag supporting assembly 320 may be arbitrary, for example, it may be a bracket assembly, a baffle assembly, or a support rod assembly. After the first suction cup 211 and the second suction cup 221 open the opening of the packaging bag, the bag-supporting drive assembly 310 can drive the bag-supporting assembly 320 to extend into the opening of the packaging bag and support it. Since packaging bags are typically thin and made of soft material, it is difficult for the open opening to maintain a preset shape. During the process of related devices entering or exiting the packaging bag through the opening, contact with the opening can easily prevent smooth entry or exit. By setting the bag-supporting mechanism 300, the open opening can be supported, thus allowing the opening to maintain a preset shape and preventing deformation due to external forces. In this way, the bag-supporting mechanism 300 provides higher stability to the open opening, thereby facilitating the entry and exit of related devices through the opening of the packaging bag.

[0038] For example, such as Figures 4 to 5As shown, the bag-supporting assembly 320 may include a chamfered plate 330. The driving end of the bag-supporting drive assembly 310 can be connected to the chamfered plate 330 to drive the chamfered plate 330 into the open bag to support it in the lateral direction XX to the bag opening. The opening 334 of the chamfered plate 330 can face inwards towards the bag opening, i.e., away from the inner wall of the bag opening. The chamfered plate 330 may include a first plate 331, a second plate 332, and a third plate 333. The first plate 331 and the third plate 333 can be arranged generally parallel, and the second plate 332 can be connected between the first plate 331 and the third plate 333 to form the chamfered plate 330. The first plate 331, the second plate 332, and the third plate 333 can be closed to form the opening 334. The opening 334 can be arranged opposite to the second plate 332. The three plates of the C-shaped plate 330 (i.e., the first plate 331, the second plate 332, and the third plate 333) can support the bag opening at three positions, thereby increasing the strength of the bag opening support and allowing the end of the bag opening in the lateral direction XX to have a larger opening degree. This facilitates the feeding device 400 and other structures to enter and exit the sealed bag through the bag opening. Furthermore, the opening 334 can face the inside of the bag opening, and the space within the opening 334 can also be used for the feeding device 400 and other structures to enter and exit the sealed bag through the bag opening, thus providing greater space for the structure to enter and exit.

[0039] For example, such as Figures 4 to 5 As shown, the bag-supporting drive assembly 310 may include a bag-supporting drive sub-assembly 311 and a base 312. The base 312 can be used to fix it to any suitable structure such as a mounting platform. The bag-supporting drive sub-assembly 311 and the C-shaped plate 330 can be disposed on the base 312. Specifically, one of the base 312 and the C-shaped plate 330 may be provided with a circular hole 315; the other of the base 312 and the C-shaped plate 330 may be provided with a first rotating shaft 335. In the embodiment shown in the figure, the circular hole 315 may be disposed on the base 312, and the first rotating shaft 335 may be disposed on the C-shaped plate 330 (specifically, the first plate 331). The circular hole 315 may extend along an axis perpendicular to a predetermined plane. This axis may be parallel to a predetermined direction ZZ. The first rotating shaft 335 may be inserted into the circular hole 315 and is rotatable within the circular hole 315. The bag-supporting drive sub-assembly 311 can be used to drive the inverted plate 330 to rotate around the axis of the first rotating shaft 335 into the open packaging bag, so as to support it to the bag opening in the lateral direction XX. After the following feeding operations are completed, the bag-supporting drive sub-assembly 311 can also be used to drive the inverted plate 330 to rotate around the axis of the first rotating shaft 335 to the initial position outside the packaging bag. When the bag-supporting mechanism 300 does not need to support the bag, the inverted plate 330 can be in the initial position. During the process of the bag-supporting drive sub-assembly 311 driving the inverted plate 330 to rotate around the axis of the first rotating shaft 335, the first rotating shaft 335 can rotate within the circular hole 315.

[0040] Due to structural limitations of the bag opening, the opening in the middle of the bag along the lateral direction XX is usually wider than the opening at the ends, resulting in a roughly flattened shape, similar to the shape of a human mouth. Driven by the bag-opening drive sub-assembly 311, the inverted plate 330 can rotate from the middle of the bag opening along the lateral direction XX into the sealed bag, and then rotate to a position supporting the end of the bag opening along the lateral direction XX. This configuration allows the inverted plate 330 to smoothly enter and exit the sealed bag through the bag opening. Furthermore, the inverted plate 330 does not contact the bag opening before rotating to the position supporting the end of the bag opening along the lateral direction XX, thus minimizing interference with the bag opening and resulting in a high success rate for the bag-opening mechanism 300.

[0041] For example, such as Figures 4 to 5 As shown, one of the base 312 and the chamfered plate 330 may also be provided with an arc-shaped hole 317. The arc-shaped hole 317 can extend about the axis of the circular hole 315. The other of the base 312 and the chamfered plate 330 may also be provided with a second rotating shaft 336. In the embodiment shown in the figure, the arc-shaped hole 317 can be provided on the base 312, and the second rotating shaft 336 can be provided on the chamfered plate 330 (specifically the first plate 331). The second rotating shaft 336 can be inserted into the arc-shaped hole 317 and is movable along the arc-shaped hole 317. During the process of the bag-supporting drive sub-assembly 311 driving the chamfered plate 330 to rotate about the axis of the first rotating shaft 335, the second rotating shaft 336 can move along the arc-shaped hole 317. The movement of the second rotating shaft 336 along the arc-shaped hole 317 guides the rotation of the C-shaped plate 330, thereby improving the stability of the rotation of the C-shaped plate 330 and consequently the stability of the bag support. Furthermore, by appropriately setting the size of the arc-shaped hole 317, both ends of the arc-shaped hole 317 along its extension direction can act as limiting elements. That is, when the second rotating shaft 336 abuts against one end of the arc-shaped hole 317, the C-shaped plate 330 can rotate to the position supporting the bag opening; when the second rotating shaft 336 abuts against the other end of the arc-shaped hole 317, the C-shaped plate 330 can rotate to its initial position outside the sealed bag.

[0042] For example, such as Figures 4 to 5As shown, the bag-opening drive subassembly 311 may include a bag-opening drive component 313 and a connector 314. The bag-opening drive component 313 may be mounted on a base 312. The connector 314 may be connected between the drive end of the bag-opening drive component 313 and the inverted plate 330. The connector 314 may be provided with a waist hole 316 extending in the longitudinal direction YY. The second rotating shaft 336 may also extend into the waist hole 316. The bag-opening drive component 313 can drive the connector 314 to move in the transverse direction XX, and the waist hole 316 can drive the second rotating shaft 336 to move along the waist hole 316, thereby causing the second rotating shaft 336 to move along the arc-shaped hole 317, which in turn can drive the inverted plate 330 to rotate around the axis of the first rotating shaft 335 into the open packaging bag. The bag-opening drive component 313 may include, but is not limited to, a cylinder or a linear motor. The bag-opening drive component 313 can convert linear motion into rotation through the connector 314.

[0043] For example, such as Figures 4 to 5 As shown, a channel 318 extending in the longitudinal direction (YY) is also provided on the base 312. The bag-supporting drive assembly 310 can be used to drive the inverted plate 330 out of the channel 318 to support it in the transverse direction (XX) to the bag opening. The bag-supporting drive sub-assembly 311 can also be used to drive the inverted plate 330 to move into the channel 318 to move to the initial position. With this configuration, the channel 318 can protect the inverted plate 330 that has moved into the channel 318, preventing it from being damaged by external forces. Furthermore, the channel 318 can be configured such that when the inverted plate 330 is supported in the transverse direction (XX) to the bag opening, an object (e.g., the feeding device 400 described below and the target material thereon) can enter the packaging bag through the channel 318. That is, the feeding device 400 can allow the target material to enter the packaging bag through the channel 318 and the bag opening, and exit the packaging bag through the channel 318. With this configuration, the base 312 can be positioned outside the opening of the sealed bag and directly opposite the opening along the longitudinal direction YY, without interfering with objects entering or exiting the sealed bag. This also allows for a smaller size for the bag-supporting drive sub-assembly 311 and the U-shaped plate 330, resulting in a simpler structure.

[0044] For example, such as Figures 4 to 5 As shown, the bag support assembly 320 may include two symmetrically arranged bag support members. Each bag support member may include the aforementioned C-shaped plate 330. The bag support drive assembly 310 can be used to drive the two bag support members to move in opposite directions (including reverse translation and reverse rotation) to extend into the open packaging bag and support it laterally to both sides of the bag opening. This improves the strength of the support for the bag opening and allows for a larger opening degree, facilitating the feeding device 400 to enter and exit the packaging bag. The bag support drive assembly 310 can also be used to drive the two bag support members to move in opposite directions to exit the packaging bag back to its initial position.

[0045] For example, such as Figures 4 to 5 As shown, the bag-supporting drive subassembly 311 may include a bag-supporting drive component 313 and two connecting components 314. The two connecting components 314 may be configured one-to-one with the two bag-supporting components. The bag-supporting drive component 313 may have two drive ends, which are respectively connected to the connecting components 314. Thus, the bag-supporting drive component 313 can drive the corresponding C-shaped plate 330 to rotate via the connecting components 314. The two C-shaped plates 330 can rotate synchronously in opposite directions.

[0046] like Figures 1 to 2 As shown, in an embodiment where the bag opening device 100 is applied to a packaging device, the packaging device may further include a feeding device 400. The feeding device 400 can be used to feed the target material through the opened bag opening into a target position inside the open packaging bag. The feeding device 400 may include a tray feeding device, a conveyor belt feeding device, or any other suitable feeding device.

[0047] In practical applications, the first suction cup 211 and the second suction cup 221 can open the bag opening, thus placing the packaging bag in an open state. Personnel can manually or via a conveying device place the target material onto the feeding device 400. Then, the bag-supporting drive assembly 310 can drive the bag-supporting assembly 320 to extend into the open packaging bag and support it at the opening. The feeding device 400 can then feed the target material along the feeding direction (e.g., longitudinal direction YY) through the bag opening to the target position within the open packaging bag. The feeding device 400 can then exit the packaging bag through the bag opening in the opposite discharge direction to the feeding direction. The bag-supporting drive assembly 310 can then drive the bag-supporting assembly 320 to exit the packaging bag. Finally, the first suction cup 211 and the second suction cup 221 can return to the closed position, thereby closing the packaging bag opening again, thus placing the packaging bag in a closed state; alternatively, the first suction cup 211 and the second suction cup 221 can directly release their suction force on the packaging bag, allowing the packaging bag opening to close automatically. With this setup, the packaging equipment can automate bag opening and feeding, offering a rich set of functions and a good user experience.

[0048] For example, such as Figures 1 to 2 As shown, the packaging equipment may also include a separation device. The separation device can be used to separate the target material located inside the packaging bag from the feeding device 400, so that the target material remains inside the packaging bag. The separation device may include a gripper device, a pusher device, or any other suitable separation device, as long as it can achieve the above functions. By providing a separation device, it is easier to separate the target material inside the packaging bag from the feeding device 400, thereby preventing the feeding device 400 from carrying the target material out of the packaging bag.

[0049] For example, such as Figures 1 to 2 As shown, the separating device may include a pressing mechanism 500 and a stop mechanism. The pressing mechanism 500 may be positioned above the packaging bag in a predetermined direction ZZ. The pressing mechanism 500 may be used to press the packaging bag downwards in the predetermined direction ZZ to compress the target material at the target position through the packaging bag and the feeding device 400. The stop mechanism may be used to block the end face of the target material facing the discharge direction of the feeding device 400 when the target material is compressed, so that the target material detaches from the feeding device 400 exiting the packaging bag in the discharge direction, and thus the target material remains inside the packaging bag. When the pressing mechanism 500 presses the packaging bag downwards to compress the target material at the target position through the packaging bag and the feeding device 400, the feeding device 400 may exit the packaging bag in the discharge direction. Then, the stop mechanism may block the end face of the target material facing the discharge direction of the feeding device 400, so that the target material detaches from the feeding device 400 exiting the packaging bag in the discharge direction, and thus the target material remains inside the packaging bag. This design allows the stop mechanism to easily separate the target material inside the packaging bag from the feeding device 400, thus preventing the feeding device 400 from carrying the target material out of the packaging bag. During the process of the feeding device 400 exiting the packaging bag in the discharge direction, if the target material includes multiple independent target materials (e.g., a desiccant and an ELISA plate placed on the desiccant on the feeding device 400), the target materials on the feeding device 400 will be squeezed together by the pressure from the feeding device 400 and the packaging bag. When the stop mechanism abuts against the end face of a target material facing the discharge direction of the feeding device 400, all the squeezed independent target materials will remain inside the packaging bag. Thus, the separation device can be used to detach multiple independent target materials from the feeding device 400, ensuring that all multiple independent target materials remain inside the packaging bag.

[0050] For example, such as Figures 1 to 2 As shown, the pressing mechanism 500 may include a pressing drive 510 and a floating component 520. The driving end of the pressing drive 510 can be connected to the floating component 520. The pressing drive 510 can be used to drive the floating component 520 to move up and down in a predetermined direction ZZ, thereby driving the floating component 520 to press the packaging bag downward. The pressing drive 510 may include a cylinder or a motor, etc. The floating component 520 may include a spring floating component, a floating component made of elastic materials such as rubber, or any other suitable floating component. By setting the floating component 520, when the pressing force of the floating component 520 is too large, the floating component 520 can elastically deform, thereby offsetting part of the pressing force, and thus avoiding damage to the target material due to excessive pressing force.

[0051] For example, such as Figures 1 to 2As shown, the floating assembly 520 may include a fixed plate 521, a floating plate 522, and an elastic element 523. The elastic element 523 may be connected between the fixed plate 521 and the floating plate 522. The elastic element 523 may be made of elastic material such as elasticity or rubber. The driving end of the pressing drive 510 may be connected to the fixed plate 521 to press the packaging bag downward through the floating plate 522. When the pressing force of the floating plate 522 is too large, the elastic element 523 can elastically deform, thereby offsetting part of the pressing force and preventing damage to the target material due to excessive pressing force. With this configuration, the floating assembly 520 has a relatively simple structure and is easy to manufacture.

[0052] For example, such as Figures 1 to 2 As shown, the stop mechanism includes a stop drive assembly and a stop assembly. The stop drive assembly drives the stop assembly to move between a passage position that allows the feeding device to feed the target material into the open packaging bag along the feeding direction and a stop position that abuts the end face. When the stop assembly moves to the stop position and the feeding device 400 exits the packaging bag along the discharge direction, the stop assembly can abut the end face of the target material on the feeding device 400 facing the discharge direction, thereby preventing the target material from continuing to exit with the feeding device 400, and thus keeping the target material inside the packaging bag.

[0053] For example, such as Figures 1 to 2 As shown, the stop mechanism can also be configured as a bag-supporting mechanism 300. That is, the bag-supporting mechanism 300 and the stop mechanism can be the same mechanism. The stop drive assembly can be a bag-supporting drive assembly 310. The stop assembly can be a bag-supporting assembly 320. When the stop assembly is in the passage position, it can extend into the bag opening of the open packaging bag and support it to the bag opening. With this configuration, the stop mechanism can have both bag-supporting and stop functions, thereby reducing the structure and lowering the cost. Furthermore, when the stop assembly is supported to the bag opening, it is closer to the bag opening, thereby providing more space for the feeding device 400 to enter and exit the packaging bag. Exemplarily, in an embodiment where the C-shaped plate 330 rotates about the axis of the first rotating shaft 335, the stop position can be located between the passage position and the initial position. The C-shaped end 337 of the C-shaped plate 330 facing away from the first rotating shaft 335 can be used to abut against the end face of the target material on the feeding device 400 facing the discharge direction.

[0054] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0055] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0056] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0057] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0058] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bag-opening device, characterized in that, The device includes a bag opening mechanism, which comprises a first suction cup disposed on both sides of a packaged bag along a predetermined direction and a second suction cup corresponding to the first suction cup. The first suction cup and the second suction cup each have a closed position that closes the packaged bag. The first suction cup and / or the second suction cup are movable along the predetermined direction between the closed position and an open position that opens the packaged bag. The projections of the first suction cup and its corresponding second suction cup along the predetermined direction on a predetermined plane overlap, and the predetermined plane is perpendicular to the predetermined direction.

2. The bag-opening device as described in claim 1, characterized in that, The bag opening device further includes a bag supporting mechanism, which includes a bag supporting drive component and a bag supporting component. The bag supporting drive component is used to drive the bag supporting component to extend into the bag opening of the packaged bag in the open state and support it to the bag opening.

3. The bag-opening device as described in claim 2, characterized in that, The bag support assembly includes a shaped plate, and the bag support drive assembly is used to drive the shaped plate to extend into the packaged bag in the open state to support it to the bag opening in a lateral direction parallel to the predetermined plane, wherein the opening of the shaped plate faces the inside of the bag opening in the lateral direction.

4. The bag-opening device as described in claim 3, characterized in that, The bag-supporting drive assembly includes a bag-supporting drive sub-assembly and a base. One of the base and the C-shaped plate is provided with a circular hole extending along an axis perpendicular to the predetermined plane, and the other is provided with a first rotating shaft that can be inserted into the circular hole and rotated. The bag-supporting drive sub-assembly is used to drive the C-shaped plate to rotate around the axis into the packaging bag in the open state, so as to support it to the bag opening in the lateral direction.

5. The bag-opening device as described in claim 4, characterized in that, One of the base and the U-shaped plate is provided with an arc-shaped hole extending around the axis, and the other is provided with a second rotating shaft that is inserted into the arc-shaped hole and movable along the arc-shaped hole.

6. The bag-opening device as described in claim 4, characterized in that, The base is provided with a channel running through it in the longitudinal direction. The bag-supporting drive sub-assembly is used to drive the shaped plate to extend out of the channel to support it to the bag opening in the transverse direction, and to drive the shaped plate to move into the channel. The channel is constructed such that when the shaped plate is supported to the bag opening in the transverse direction, an object is allowed to enter the packaging bag through the channel. The longitudinal direction is parallel to the predetermined plane and perpendicular to the transverse direction.

7. The bag-opening device as described in claim 2, characterized in that, The bag support assembly includes two symmetrically arranged bag support members. The bag support drive assembly is used to drive the two bag support members to move in opposite directions so as to extend into the packaged bag in the open state and support it to both sides of the bag opening in the lateral direction, which is parallel to the predetermined plane.

8. The bag-opening device as claimed in claim 1, characterized in that, The projections of the first suction cup and its corresponding second suction cup onto the predetermined plane along the predetermined direction overlap by half.

9. A packaging device, characterized in that, It includes a feeding device and a bag-opening device as described in any one of claims 1-8, wherein the feeding device is used to feed the target material into a target position inside the packaged bag in the open state.

10. The packaging apparatus as described in claim 9, characterized in that, The packaging equipment further includes a separation device for separating the target material located in the packaging bag from the feeding device, so that the target material remains in the packaging bag.

11. The packaging apparatus as described in claim 10, characterized in that, The separation device includes a pressing mechanism and a stopping mechanism. The pressing mechanism is disposed above the packaging bag and is used to press the packaging bag downwards to squeeze the target material at the target position through the packaging bag and the feeding device. The stopping mechanism is used to block the end face of the target material facing the discharge direction of the feeding device when the target material is squeezed, so that the target material is detached from the feeding device exiting the packaging bag in the discharge direction, and the target material remains in the packaging bag.

12. The packaging apparatus as described in claim 11, characterized in that, The pressing mechanism includes a pressing drive and a floating component, wherein the pressing drive is used to drive the floating component to press the packaging bag downward.

13. The packaging apparatus as described in claim 11, characterized in that, The stop mechanism includes a stop drive assembly and a stop assembly. The stop drive assembly is used to drive the stop assembly to move between a passage position that allows the feeding device to feed the target material into the open packaging bag along the feeding direction and a stop position that abuts the end face. The feeding direction is opposite to the discharge direction.

14. The packaging apparatus as described in claim 13, characterized in that, The stop mechanism is also configured as a bag support mechanism. When the stop component is in the passage position, it extends into the bag opening of the packaged bag in the open state and supports the bag opening.

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