Automatic bag opening and packaging equipment for eye pads and using method of automatic bag opening and packaging equipment

Abstract

The invention relates to the technical field of packaging equipment, in particular to automatic eye pad bag opening packaging equipment and a using method thereof.The automatic eye pad bag opening packaging equipment comprises a fixed table and a rotating table rotationally installed on the lower side of the fixed table, and a bag feeder, a bag opening device, a feeding hopper, an ultrasonic sealing machine and a conveying belt are sequentially distributed on the periphery of the rotating table in a surrounding mode; a bag feeding mechanical arm is arranged between the bag feeding device and the rotating table, the bag clamping assembly is adopted for opening bags, the mode that air easily leaks on non-woven fabric is not depended on, clamping needles are arranged on clamping plates in the bag clamping assembly, the clamping needles are arranged in a staggered mode to form multi-point contact when clamping is conducted, and therefore the clamping force is increased, and the clamping effect is improved. And the staggered clamping needles can reduce the stress of a single clamping needle, so that the wear rate is reduced, the stability is better, the eye patch pocket is clamped through the synergistic effect of the structure, the eye patch pocket can be stably grasped, the influence of the air permeability of non-woven fabric is avoided, and the problem that the pocket opening work is influenced due to air leakage caused by suction of a suction cup is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of packaging equipment, and in particular to an automatic bag-opening packaging equipment for eye patches and a use method thereof. Background Art

[0002] The material of the eye patch bag is usually some objects (medical polymer hydrogel materials, or Chinese herbal medicine extracts, etc.) in a non-woven fabric. At present, most of the automatic bag opening and packaging equipment on the market mainly rely on the suction cup adsorption method of the bag opening device to open the eye patch bag during the bag opening operation; however, the non-woven fabric of the eye patch bag has special air permeability. This characteristic makes it easy to leak when the suction cup adsorbs the eye patch bag. Once leakage occurs, the suction cup cannot stably adsorb the eye patch bag, which seriously affects the smooth progress of the bag opening related work; and the existing bag opening device cannot flexibly adjust the position. When facing eye patch bags of different thicknesses, it is difficult to adjust the eye patch bags. The two sides are effectively clamped, and in order to adapt to eye patch bags of different thicknesses, it is often necessary to repeatedly adjust the position of the entire device or replace related parts. This process is not only cumbersome but also time-consuming; at the same time, the existing equipment has poor flexibility in the fastening effect on both sides of the eye patch bag, and cannot adjust the fastening method with the eye patch bag according to different bag opening requirements. For example, eye patch bags of different thicknesses or sizes are prone to displacement or loosening when opening the bag, which greatly affects the working efficiency and use effect of the overall bag opening and packaging equipment; therefore, it is necessary to develop a new type of automatic bag opening and packaging equipment for eye patches and its use method to overcome these defects of the prior art; Therefore, it is urgent to propose an automatic bag opening and packaging device for eye patches and a method of using the same to improve the existing technology. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide an automatic bag opening and packaging device for eye patches to solve the problems mentioned in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized by the following technical scheme: an automatic bag opening and packaging equipment for eye patches, comprising a fixed platform and a rotating platform rotatably installed at the lower side of the fixed platform, wherein a bag feeder, a bag opening device, a feeding hopper, an ultrasonic sealing machine and a conveyor belt are sequentially distributed around the outer circumference of the rotating platform, wherein a bag loading mechanical arm is arranged between the bag feeder and the rotating platform, a flexible bag clamping assembly is installed in a circular array at the outer edge of the lower side of the rotating platform for clamping both sides of the eye patch bag, and a first lifting rod and a second lifting rod are respectively installed at the bottom of the bag opening device and the feeding hopper; The bag opening device comprises a mounting frame and two bag clamping assemblies which are arranged opposite to each other and are movably arranged on one side of the mounting frame. Two upper sliding bars and a lower sliding bar which are parallel to each other are slidably arranged in the middle of the mounting frame. The upper sliding bars and the lower sliding bars are both locked with mounting seats for mounting the bag clamping assemblies at the same ends, so as to drive the two bag clamping assemblies to move in relative or opposite directions. A rotating long plate is installed in the middle of the installation frame between the upper sliding rod and the lower sliding rod through a rotating shaft, and movable slots are respectively opened on the upper and lower sides of the rotating long plate, and the upper sliding rod and the lower sliding rod are respectively fixed with plugs adapted to be inserted into the inner side of the movable slot, wherein the installation frame is installed with a sliding telescopic push rod for pushing the lower sliding rod to slide; The bag clamping assembly includes a first movable rod and a second movable rod rotatably mounted on the upper side of the mounting seat, the first movable rod and the second movable rod are both slidably embedded in the front ends of the sliding clamping rod, the front ends of the sliding clamping rod are movably connected to a clamping plate, and a plurality of clamping pins are fixedly provided on the surface of the clamping plate, the lower sides of the first movable rod and the second movable rod are both rotatably connected to a connecting rod, the mounting seat is provided with a bag clamping telescopic push rod, and the telescopic end of the bag clamping telescopic push rod is rotatably connected to the two connecting rods for pushing and pulling to control the first movable rod and the second movable rod to rotate relative or oppositely, so that the clamping pins on the two clamping plates clamp the surface of the eye patch bag with each other.

[0005] A further improvement based on the above technical solution is that a screw is rotatably installed on the upper side of the first movable rod and the second movable rod, a sliding block is locked on the upper side of the sliding clamp rod, the screw thread passes through the middle of the sliding block, and a handwheel is installed at one end of the screw for driving the sliding clamp rod to slide forward and backward to adjust the position.

[0006] A further improvement based on the above technical solution is that mutually meshing transmission gears are installed on the opposite sides of the first movable rod and the second movable rod, an adjustable telescopic rod is hinged on the lower side of the sliding clamp rod, and the telescopic end of the adjustable telescopic rod is hinged to the lower side of the clamp plate for controlling the rotation angle of the clamp plate.

[0007] A further improvement based on the above technical solution is that the bag clamping assembly is located below the upper slide bar, a sliding frame is provided on the middle sliding sleeve of the upper slide bar, and the sliding frame is equipped with an air nozzle facing downward, and the sliding frame is tightly connected to the upper slide bar by screws.

[0008] A further improvement based on the above technical solution is that the card pin is in the shape of a right triangle, and the card pins of the sliding clamp rod on the first movable rod and the second movable rod are staggered and distributed, and a slot for the card pin to rotate is provided at the front end of the sliding clamp rod.

[0009] A further improvement based on the above technical solution is that the outer sides of the three corners of the clamping pin are all rounded, and the clamping pin is locked on the clamping plate by screws, and the top of the clamping plate is round.

[0010] A further improvement based on the above technical solution is that the flexible bag clamping assembly includes two relatively arranged Z-shaped clamping walls, the two Z-shaped clamping walls are elastically connected to each other by a first tension spring, one end of the Z-shaped clamping wall is laterally connected to the lower side of the rotating table for relative sliding via a guide rail slider, the other end of the Z-shaped clamping wall is locked with an inner clamping piece, and an outer clamping piece is movably attached to one side of the inner clamping piece, the middle part of the outer clamping piece is hinged to the outer end of the Z-shaped clamping wall, and an outer rotating rod is hinged to the outer end of the outer clamping piece, the middle part of the outer rotating rod is rotatably connected to the middle part of the Z-shaped clamping wall, and the inner end of the outer clamping piece protrudes between the two outer rotating rods, and the outer rotating rod is connected to one side of the Z-shaped clamping wall with a second tension spring, so that the outer clamping piece uses the elastic tensioning force of the second tension spring to clamp the eye patch bag on the inner clamping piece.

[0011] A further improvement based on the above technical solution is that two horizontal telescopic rods are installed on the top of the fixed platform, and push plates are installed on the telescopic ends of the horizontal telescopic rods, the two push plates correspond to the upper bag robot arm and one side of the conveyor belt respectively, and the push plate corresponds to one end of the inner rotating rod protruding on the upper side of the two Z-shaped clamping walls.

[0012] A further improvement based on the above technical solution is that a vertical electric push rod is installed on the lower side of the rotating table, and a triangular convex plate is locked on the telescopic end of the vertical electric push rod, and the inclined surfaces on both sides of the triangular convex plate are tightly attached to the opposite side of the inner ends of the two Z-shaped clamping walls.

[0013] Also included is a method for using the automatic bag opening and packaging device for eye patches, including the following steps: S1: The bag feeder conveys the horizontally placed eye patch bag to the front end, and the bag loading robot arm flips the eye patch bag 90 degrees, grabs and conveys it to the flexible bag clamping assembly for elastic clamping. At this time, the rotating table rotates, and the eye patch bag vertically clamped by the flexible bag clamping assembly is rotated to the bag opening, filling and heat sealing stations for processing, while the bag feeder and bag loading robot arm load the next empty flexible bag clamping assembly in turn; S2: When the flexible bag clamping assembly rotates the eye patch bag to the bag opening station, the first lifting rod descends, so that the two bag clamping assemblies of the bag opening device correspond to the two sides of the eye patch bag respectively, and then the lower slide bar moves forward by retracting and pulling the sliding telescopic push rod, and the upper slide bar moves backward under the rotation linkage of the rotating long plate, so that the upper slide bar and the lower slide bar are relatively displaced, and then the two bag clamping assemblies are pushed toward the surfaces on both sides of the eye patch bag to be tightly attached; S3: Before the bag clamping assembly is attached to the eye patch bag, turn the hand wheel according to the use requirements to let the screw thread drive the slider, and the slider will simultaneously push the sliding clamp rod to slide back and forth for adjustment, and then adjust each clamping plate to the appropriate position. At this time, adjust the two rotation clamping states of the clamping plate according to the clamping requirements: When the top of the splint is protruding forward, the small-area clamping pins on the top of the two splints cross-clamp the eye patch bag in a local single-point manner; When the front side of the splint is in a vertical state, multiple clamping pins on the entire line of the front side of the two splints clamp the eye patch bag in a multi-point cross-clamping manner; S4: After the bag clamping assembly is attached to the eye patch bag, the bag clamping telescopic push rod is retracted, and the first movable rod and the second movable rod are pulled respectively by the two connecting rods, so that the first movable rod and the second movable rod are relatively rotated on the mounting seat, so that the clamping pins on the two clamping plates corresponding to the first movable rod and the second movable rod cross each other and clamp the surface of the eye patch bag; S5: After the clamping plates on the two bag clamping assemblies clamp the surfaces of both sides of the eye patch bag, the sliding telescopic push rod is reset and extended, driving the upper sliding rod and the lower sliding rod to move in the opposite direction, so that the eye patch bag clamped by the two bag clamping assemblies is opened on the flexible bag clamping assembly. At this time, the air nozzle above the eye patch bag opening can blow air, further assisting the opening of the eye patch bag. The airflow is also conducive to the airflow channel formed inside the eye patch bag, which can carry dust particles and discharge them out of the eye patch bag along the opening direction; then the bag clamping telescopic push rod of the bag clamping assembly is extended and reset, allowing the clamping needle to release the surface of the eye patch bag. At this time, the first lifting rod is lifted up and separated from the rotation path of the flexible bag clamping assembly, and the rotating table rotates the eye patch bag clamped and opened by the flexible bag clamping assembly to the filling station; S6: When filling materials, the second lifting rod drives the feed hopper downward and inserts it into the opened eye patch bag opening for feeding, and then the second lifting rod rises to allow the feed hopper to detach from the eye patch bag opening, and then the turntable rotates to rotate the eye patch bag with materials clamped by the flexible bag clamping assembly to the ultrasonic sealing machine for sealing, and finally rotates to the top of the conveyor belt, opens the flexible bag clamping assembly, and then the sealed eye patch bag falls into the upper side of the conveyor belt for feeding.

[0014] By adopting the above technical solution, the present invention has the following advantages compared with the existing technology: The bag opening device of the present invention adopts a bag clamping assembly to open the bag, and no longer relies on the suction cup adsorption method that is easy to leak on the non-woven fabric. The clamping plate in the bag clamping assembly is provided with clamping pins, which are staggered to form multi-point contact when clamping, thereby increasing the clamping force, and the staggered clamping pins can reduce the force on a single clamping pin, thereby reducing the wear rate and improving the stability. Therefore, the eye patch bag is clamped by the synergistic effect of the structure, and the eye patch bag can be stably grasped without being affected by the air permeability of the non-woven fabric, thereby effectively solving the problem of affecting the bag opening work due to suction cup adsorption leakage; Flexible clamping adjustment: Through the control of the bag clamping telescopic push rod, the first movable rod and the second movable rod in the bag clamping assembly can rotate relative to or oppositely, and the sliding clamping rod can not only adjust the position by sliding forward and backward through the screw drive, but also adjust the rotation angle of the clamping plate by adjusting the telescopic rod. This multi-dimensional adjustment method and coordinated use can quickly and accurately adjust the clamping position, clamping force and clamping state according to the different shapes and sizes of the eye patch bag, ensuring stable clamping and avoiding the instability problem caused by the suction cup adsorption method due to the characteristics of non-woven fabrics; Among them, the clamping plate has two use states when rotating an angle: one is that the top of the clamping plate protrudes forward, and the small range of the clamping needles on the top of the two clamping plates cross-clamp the eye patch bag in a local single-point manner, which can be used for clamping the surface of the non-woven eye patch bag with a small length specification and thinness; The other is that the front side of the clamping plate is in a vertical state, and multiple clamping pins on the entire line of the front side of the two clamping plates cross-clamp the eye patch bag in a multi-point manner, so that the surface of the non-woven eye patch bag with larger length and thicker specifications can be clamped, and the staggered clamping of the clamping pins on the entire line will be more stable, and these two states can also be combined with the air nozzle to improve the use effect. The airflow blown out by the air nozzle will enter the opening of the eye patch bag. Since the airflow has a certain pressure, it can exert an outward force on the inner wall of the eye patch bag, forming a synergistic effect with the pulling force of the bag clamping component. This additional force helps the opening of the non-woven eye patch bag material to be more fully expanded; and the airflow blown out by the air nozzle can blow out these dust particles while the eye patch bag opening is expanded, which helps to improve the cleanliness of the inside of the eye patch bag and ensure the quality of the eye patch product; Flexible displacement of the bag opening device: through the synergistic effect of the sliding telescopic push rod, rotating long plate and other structures, the upper sliding rod and the lower sliding rod in the bag opening device can be displaced in relative or opposite directions, and the positions of the two bag clamping components can be flexibly and synchronously adjusted to adapt to eye patch bags of different thicknesses. There is no need to repeatedly adjust the position of the entire device or replace parts like the existing equipment, which greatly improves the adaptability of the equipment to eye patch bags of different thicknesses; Adaptability of the flexible bag clamping assembly: The flexible bag clamping assembly is composed of two relatively arranged Z-shaped clamping walls and other structures. It can adapt to clamping eye patch bags of different widths and thicknesses through its own elastic structure such as the first tension spring and the second tension spring. At the same time, through the cooperation of the vertical electric push rod and the triangular convex plate, the opening and closing degree of the Z-shaped clamping wall can be controlled, further enhancing the adaptability to eye patch bags of different widths. When opening the bag, the bag clamping assembly can pull the flexible bag clamping assembly to elastically clamp the eye patch bag and maintain the bag opening state, which greatly improves the overall flexibility and use effect of the equipment, and is conducive to improving the overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic structural diagram of the rotating table, bag opening device and feeding hopper of the present invention; Figure 3 It is a schematic structural diagram of the flexible bag clamping assembly of the present invention; Figure 4 It is a schematic structural diagram of the bag opening device of the present invention; Figure 5 It is a structural schematic diagram of the bag clamping assembly of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the structure from another perspective; Figure 7 This is a schematic diagram of the use state of the splint of the present invention, in which the top of the splint is protruding forward; Figure 8 , Fig. 9 This is a schematic diagram of the use state of the splint of the present invention, in which the front side is in a vertical state; In the figure: fixed table 1, rotating table 2, flexible bag clamping assembly 20, Z-shaped clamping wall 21, inner clamping piece 211, outer clamping piece 212, first tension spring 22, guide rail slider 23, triangular convex plate 24, vertical electric push rod 25, inner rotating rod 26, outer rotating rod 27, second tension spring 28, bag feeder 3, bag loading mechanical arm 31, bag opening device 4, first lifting rod 41, bag clamping assembly 42, bag clamping telescopic push rod 420, connecting rod 4201, first movable rod 421, second movable rod 422, sliding clamp rod 423, clamp plate 424, clamping pin 425, adjusting telescopic rod 426, screw rod 427, slider 428, transmission gear 429, mounting frame 43, upper sliding rod 44, lower sliding rod 45, rotating long plate 46, movable slot 461, plug column 47, sliding telescopic push rod 48, mounting seat 49, sliding frame 410, air nozzle 411, feed hopper 5, second lifting rod 51, ultrasonic sealing machine 6, conveyor belt 7, horizontal telescopic rod 8, push plate 81. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0017] like Figure 1-9As shown, the present invention provides a technical solution of an automatic bag opening and packaging device for eye patches: it comprises a fixed table 1 and a rotating table 2 rotatably mounted on the lower side of the fixed table 1, wherein a bag feeder 3, a bag opening device 4, a feed hopper 5, an ultrasonic sealer 6 and a conveyor belt 7 are sequentially distributed around the outer periphery of the rotating table 2, wherein a bag loading mechanical arm 31 is arranged between the bag feeder 3 and the rotating table 2, such a layout is very compact, and the distance between each workstation is relatively short, and during the processing of the eye patch bag, the transfer time of the eye patch bag between different workstations is reduced, and a flexible bag clamping assembly 20 is installed in a circular array on the outer edge of the lower side of the rotating table 2, which is used to clamp the two sides of the eye patch bag On the other hand, a first lifting rod 41 and a second lifting rod 51 are respectively installed at the bottom of the bag opening device 4 and the feeding hopper 5, and the lifting and lowering of the bag opening device 4 and the feeding hopper 5 are respectively controlled by the first lifting rod 41 and the second lifting rod 51. When the eye patch bag reaches the bag opening station, the first lifting rod descends, so that the bag clamping assembly of the bag opening device can be accurately aligned with both sides of the eye patch bag to prepare for the bag opening operation; the second lifting rod 51 at the bottom of the feeding hopper 5 can control the lifting and lowering of the feeding hopper 5. When the eye patch bag completes the bag opening operation and rotates to the filling station, the second lifting rod 51 descends, so that the feeding hopper 5 can be accurately inserted into the opening of the eye patch bag for feeding operation.

[0018] The bag opening device 4 includes a mounting frame 43 and two bag clamping assemblies 42 that are oppositely arranged and movably arranged on one side of the mounting frame 43. Two upper sliding bars 44 and lower sliding bars 45 that are parallel to each other are slidably installed in the middle of the mounting frame 43. The upper sliding bars 44 and the lower sliding bars 45 are both locked with mounting seats 49 for mounting the bag clamping assemblies 42 at the same ends, so as to drive the two bag clamping assemblies 42 to move in relative or opposite directions. This structural design can flexibly adjust the position of the bag clamping assemblies to adapt to eye patch bags of different sizes, and ensure that the bag clamping assemblies can accurately clamp the two sides of the eye patch bag to perform bag opening operations without frequent position adjustment. In order to achieve the relative or opposite sliding displacement of the upper sliding rod 44 and the lower sliding rod 45, a rotating long plate 46 is installed in the middle of the installation frame 43 between the upper sliding rod 44 and the lower sliding rod 45 through a rotating shaft, and movable card slots 461 are respectively opened on the upper and lower sides of the rotating long plate 46, and the upper sliding rod 44 and the lower sliding rod 45 are respectively fixed with plug columns 47 adapted to be inserted into the inner side of the movable card slots 461, wherein the installation frame 43 is installed with a sliding telescopic push rod 48 for pushing the lower sliding rod 45 to slide. Therefore, through the extension and retraction of a single sliding telescopic push rod 48 and the rotation linkage of the rotating long plate 46, the upper sliding rod 44 and the lower sliding rod 45 can be rotated to push and pull to move back and forth.

[0019] The bag clamping assembly 42 includes a first movable rod 421 and a second movable rod 422 rotatably mounted on the upper side of the mounting seat 49, the front ends of the first movable rod 421 and the second movable rod 422 are both slidably embedded with a sliding clamp rod 423, the front ends of the sliding clamp rod 423 are movably connected to a clamp plate 424, and a plurality of clamping pins 425 are fixedly arranged on the surface of the clamp plate 424, the lower sides of the first movable rod 421 and the second movable rod 422 are both rotatably connected to a connecting rod 4201, the mounting seat 49 is installed with a bag clamping telescopic push rod 420, and the telescopic end of the bag clamping telescopic push rod 420 is rotatably connected to the two connecting rods 4201, which is used to push and pull the first movable rod 421 and the second movable rod 422 to rotate relative to or oppositely. When the first movable rod 421 and the second movable rod 422 rotate relative to each other, the two sliding clamping rods 423 will form an angle, so that the clamping pins 425 on the two clamping plates 424 clamp the surface of the eye patch bag with each other. The clamping has good stability and can effectively prevent the eye patch bag from sliding during the bag opening process. The clamping pins 425 are in the shape of a right-angled triangle, which makes the structure of the clamping pins 425 more stable and has higher strength. When the parts clamp the surface of the non-woven fabric, the stability is also better. The clamping pins 425 of the sliding clamping rods 423 on the first movable rod 421 and the second movable rod 422 are staggered and distributed. The multi-point contact mode formed by the staggered arrangement of the clamping pins 425 increases the contact points when clamping the eye patch bag. According to the principle of mechanics, applying force at multiple contact points simultaneously can increase the total clamping force. When opening the bag, it is necessary to overcome the self-resistance of the eye patch bag material and possible internal adhesion. Sufficient clamping force can ensure that the eye patch bag is stably fixed. Its contact and fixation with the eye patch bag does not depend on the airtight condition during suction cup adsorption. For breathable materials such as non-woven fabrics, suction cup adsorption is prone to failure due to air leakage, but the staggered clamping structure of the card needle 425 directly acts on the surface of the eye patch bag through mechanical clamping force. This structural feature fundamentally avoids the air leakage problem caused by suction cup adsorption due to the air permeability of non-woven fabrics, ensuring that the bag opening work can proceed smoothly and is no longer affected by traditional suction cup adsorption. The inherent defects of the attachment method are solved, providing a stable foundation for the subsequent bag opening operation, and the staggered arrangement of the clamping pins 425 disperses the clamping force to multiple clamping pins 425, thereby reducing the force borne by a single clamping pin 425. From the perspective of material mechanics, when the stress on a single object is reduced, the risk of deformation and damage during operation will also be reduced. A notch for the rotation of the clamping pin 425 is provided at the front end of the sliding clamping rod 423 to avoid obstruction when the clamping plate 424 rotates and adjusts its state; and due to the distribution and structural characteristics of the clamping pins 425 on the two clamping plates 424, they can adapt to the surface of non-woven eye patch bags of different shapes, thereby improving the success rate and stability of bag opening; Among them, a screw rod 427 is rotatably installed on the upper side of the first movable rod 421 and the second movable rod 422, and a slider 428 is locked on the upper side of the sliding clamp rod 423. The screw rod 427 thread runs through the middle of the slider 428, and a hand wheel is installed at one end of the screw rod 427, so that the operator can conveniently and directly perform the adjustment operation. The screw rod 427 is used to drive the sliding clamp rod 423 to slide forward and backward to adjust the position. The threaded cooperation between the screw rod 427 and the slider 428 is a precise transmission method. By turning the hand wheel at one end of the screw rod 427, a very small displacement adjustment can be achieved. This fine-tuning function is very useful in processing eyes of different sizes. It is very important when patching the bag. For example, for some smaller eye patch bags, the position of the sliding clamp rod 423 can be fine-tuned so that the clamp plate 424 and the clamping pin 425 can clamp the specific position of the eye patch bag more accurately to avoid affecting the bag opening operation or causing damage to the eye patch bag due to inaccurate clamping position. Moreover, since the screw drive has self-locking properties, once the sliding clamp rod 423 is adjusted to a suitable position, it can remain in that position without being easily displaced. This ensures that during the processing of the eye patch bag, such as in a series of operations such as bag opening, filling, and sealing, the bag clamping assembly always remains in the correct clamping position.

[0020] In addition, mutually meshing transmission gears 429 are installed on the opposite sides of the first movable rod 421 and the second movable rod 422. This structure provides a precise transmission method for the movement of the sliding clamp rod 423 and the clamp plate 424. When the first movable rod 421 and the second movable rod 422 are caused to move relative to each other by pushing and pulling the bag clamping telescopic push rod 420, the sliding clamp rods and the clamp plates on both sides can move synchronously due to the meshing action of the transmission gears. Moreover, this synchronous movement structure of the transmission gear 429 can be combined with the synchronous push-pull structure of the connecting rod 4201, so that the first movable rod 421 and the second movable rod 422 can rotate synchronously and stably on both sides.

[0021] In this embodiment, an adjustable telescopic rod 426 is hinged at the lower side of the sliding clamp rod 423, and the telescopic end of the adjustable telescopic rod 426 is hinged to the lower side of the clamp plate 424. By adjusting the telescopic action of the telescopic rod 426, the rotation angle of the clamp plate 424 can be accurately controlled, and the eye patch bag can be clamped at a suitable rotation angle, making the entire clamping structure more flexible and stable. Specifically, two usage states of the clamp plate 424 are listed in this embodiment: like Figure 7 As shown, the first type is a state where the top of the clamping plate 424 protrudes forward, and the small-range clamping pins 425 on the top of the two clamping plates 424 cross-clamp the eye patch bag in a local single-point manner. At this time, the clamping pins 425 are mainly installed on the circular top of the clamping plate 424 to cross-clamp the non-woven fabric with each other, which can be used to clamp the surface of the non-woven fabric eye patch bag with a smaller length and thinner specifications; like Figure 8 , Fig. 9As shown, the second type is that the front side of the splint 424 is in a vertical state, and multiple clamping pins 425 on the entire line of the front sides of the two splints 424 cross-clamp the eye patch bag in a multi-point manner. At this time, the clamping pins 425 installed on the vertical facade of the front side of the splint 424 cross-clamp the non-woven fabric with each other, which can be applied to the surface of non-woven eye patch bags with larger specifications and lengths and thicker thicknesses. Moreover, the staggered clamping of the clamping pins 425 on the entire line is more stable than the first type in which the top of the splint 424 protrudes forward.

[0022] At the same time, the use of the two clamping plates 424 can also be combined with the use of the air nozzle 411 to improve the use effect. The bag clamping assembly 42 is located below the upper slide bar 44. The middle sliding sleeve of the upper slide bar 44 is provided with a sliding frame 410, and the sliding frame 410 is equipped with an air nozzle 411 facing downward. The air nozzle 411 is connected to an air pump through an air pipe. After the above-mentioned clamping needles 425 are staggered and clamped to open the eye patch bag, the airflow blown out by the air nozzle 411 under the action of the air pump will enter the opening of the eye patch bag. Since the airflow has a certain pressure, it can press the inner wall of the eye patch bag. The outward force is applied to form a synergistic effect with the pulling force of the bag clamping assembly. This additional force helps the opening of the non-woven eye patch bag material to expand more fully, and the airflow blown out by the air nozzle can blow out the dust particles while the eye patch bag opening is expanding, which helps to improve the cleanliness of the inside of the eye patch bag and ensure the quality of the eye patch product. The sliding frame 410 is tightly connected to the upper sliding rod 44 by screws. The sliding frame 410 can be used to adjust the position of the air nozzle 411 at the corresponding eye patch bag, and then locked by screws. It is simple and convenient to use.

[0023] Among them, the three outer corners of the clamping pin 425 are all rounded. This rounded design can effectively prevent the clamping pin from scratching the eye patch bag during the process of clamping the eye patch bag, and the clamping pin 425 is locked on the clamping plate 424 by screws. This installation method is relatively simple and convenient, and can be quickly disassembled and replaced.

[0024] In the above technical solution, the flexible bag clamping assembly 20 includes two relatively arranged Z-shaped clamping walls 21, and the two Z-shaped clamping walls 21 are elastically connected to each other through a first tension spring 22, so that the Z-shaped clamping walls 21 can be elastically tightened on each other on the first tension spring 22, and one end of the Z-shaped clamping wall 21 is horizontally relatively slidably connected to the lower side of the rotating table 2 through a guide rail slider 23, thereby ensuring that the Z-shaped clamping wall 21 is stably maintained at the same level when sliding. This arrangement can be used in conjunction with the vertical electric push rod 25 and the triangular convex plate 24 installed on the lower side of the rotating table 2. Specifically, the triangular convex plate 24 is installed at the telescopic end of the vertical electric push rod 25. When the vertical electric push rod 25 is pushed upward, as shown in FIG. Figure 3As shown, since the inclined surfaces on both sides of the triangular convex plate 24 are in close contact with the opposite side of the inner ends of the two Z-shaped clamping walls 21, the inclined edges on both sides of the triangular convex plate 24 can gradually push the two Z-shaped clamping walls 21 to move outward after the triangular convex plate 24 moves upward, thereby adjusting the distance between the two Z-shaped clamping walls 21 to accommodate a wider eye patch bag. Similarly, when the triangular convex plate 24 moves downward, the distance between the two Z-shaped clamping walls 21 is gradually reduced under the tension of the first tension spring 22, thereby matching a smaller size of eye patch bag, and the use effect is greatly improved; Among them, the other end of the Z-shaped clamping wall 21 is locked with an inner clamping piece 211, and an outer clamping piece 212 is movably attached to one side of the inner clamping piece 211, the middle part of the outer clamping piece 212 is hinged to the outer end of the Z-shaped clamping wall 21, and the outer end of the outer clamping piece 212 is hinged to the outer end of the Z-shaped clamping wall 21, and the outer end of the outer clamping piece 212 is hinged to the outer end of the outer clamping piece 212, and the middle part of the outer clamping piece 27 is rotatably connected to the middle part of the Z-shaped clamping wall 21, and the inner end of the outer clamping piece 212 is protruding and arranged between the two outer clamping pieces 27, and the outer clamping piece 27 is connected to one side of the Z-shaped clamping wall 21 with a second tension spring 28, so that the outer clamping piece 212 uses the elastic tensioning force of the second tension spring 28 to clamp the eye patch bag on the inner clamping piece 211, so that it can adapt to clamping eye patch bags of different thicknesses, and in the processing of the eye patch bag, such as rotation, bag opening, filling, sealing, etc. The operation can stably clamp the eye patch bag to prevent the eye patch bag from displacement or loosening, thereby ensuring the accuracy of processing. In addition, the elastic clamping force of the outer clamping piece 212 can also be used in conjunction with the above-mentioned two use states of the clamping plates 424. That is to say, no matter what use state the clamping plate 424 is in, when the clamping pins 425 are staggered to clamp and open the eye patch bag opening, the two sides of the eye patch bag elastically clamped by the outer clamping piece 212 can be slightly pulled. After the clamping pins 425 release the eye patch bag, the two clamping plates 424 not only still maintain the function of clamping the eye patch bag, but also maintain the state of the eye patch bag opening being opened. Then, as the rotating table 2 rotates, the flexible bag clamping assembly 20 clamps the opened eye patch bag and rotates it to the next process. The use is quick and stable.

[0025] In addition, the fixed platform 1 remains stationary, and two horizontal telescopic rods 8 are installed on the top of the fixed platform 1, and push plates 81 are installed at the telescopic ends of the horizontal telescopic rods 8. The two push plates 81 correspond to one side of the bagging robot 31 and the conveyor belt 7 respectively, and the push plates 81 correspond to one end of the inner rotating rod 26 protruding from the upper side of the two Z-shaped clamping walls 21. The horizontal telescopic rod 8 mainly moves the push plate 81, allowing the push plate 81 to push open the inner end of the inner rotating rod 26 to realize rotation, pull the outer rotating rod 27 and the outer clamping piece 212, and realize the opening of the outer clamping piece 212.

[0026] The present invention also includes a method for using the automatic bag opening and packaging device for eye patches, comprising the following steps: S1: The bag feeder 3 conveys the horizontally placed eye patch bag to the front end, and the upper bag mechanical arm 31 flips the eye patch bag 90 degrees to grasp and convey it to the flexible bag clamping assembly 20 for elastic clamping. When the flexible bag clamping assembly 20 clamps the eye patch bag on both sides, one of the horizontal telescopic rods 8 corresponding to the upper bag mechanical arm 31 will extend forward, so that the push plate 81 moves to the upper side of the two Z-shaped clamping walls 21, and pushes open the inner end of the inner rotating rod 26, and the outer end of the inner rotating rod pulls the outer rotating rod 27 and the outer clamping piece 212 in turn, so that the outer clamping piece 212 rotates and opens on the Z-shaped clamping wall 21. At this time, the upper bag mechanical arm 31 vertically sets the two sides of the eye patch bag on one side of the inner clamping piece 211, and then the horizontal telescopic rod 8 is reset, so that the push plate 81 is retracted, and the outer clamping piece 212 is reset under the elastic tension of the second tension spring 28, and clamps the eye patch bag on one side of the inner clamping piece 211; At this time, the rotating table 2 rotates, and the eye patch bag vertically clamped by the flexible bag clamping assembly 20 is rotated to the bag opening, filling and heat sealing stations for processing, while the bag feeder 3 and the bag loading robot 31 load the next vacant flexible bag clamping assembly 20 in turn; S2: When the flexible bag clamping assembly 20 rotates the eye patch bag to the bag opening station, the first lifting rod 41 descends, so that the two bag clamping assemblies 42 of the bag opening device 4 correspond to the two sides of the eye patch bag respectively, and then the lower slide bar 45 moves forward by retracting and pulling the sliding telescopic push rod 48, and the upper slide bar 44 moves backward under the rotation linkage of the rotating long plate 46, so that the upper slide bar 44 and the lower slide bar 45 are relatively displaced, and then the two bag clamping assemblies 42 are pushed toward the surfaces on both sides of the eye patch bag to be tightly attached; S3: Before the bag clamping assembly 42 is attached to the eye patch bag, the hand wheel is rotated according to the use requirements to make the screw rod 427 threadedly drive the slider 428, and the slider 428 simultaneously pushes the sliding clamp rod 423 to slide back and forth for adjustment, thereby adjusting each clamping plate 424 to a suitable position. At this time, the two rotation clamping states of the clamping plate 424 are adjusted according to the clamping requirements: When the top of the clamping plate 424 is in a forward protruding state, the small-area clamping pins 425 on the top of the two clamping plates 424 cross-clamp the eye patch bag in a local single-point manner; When the front side of the clamping plate 424 is in a vertical state, the multiple clamping pins 425 on the entire line of the front side of the two clamping plates 424 clamp the eye patch bag in a multi-point cross-clamping manner; S4: After the bag clamping assembly 42 is attached to the eye patch bag, the bag clamping telescopic push rod 420 is retracted, and the first movable rod 421 and the second movable rod 422 are pulled respectively by the two connecting rods 4201, so that the first movable rod 421 and the second movable rod 422 are relatively rotated on the mounting seat 49, so that the first movable rod 421 and the second movable rod 422 correspond to the clamping pins 425 on the two clamping plates 424 and cross clamp the surface of the eye patch bag; S5: After the clamping plates 424 on the two bag clamping assemblies 42 clamp the surfaces of both sides of the eye patch bag, the sliding telescopic push rod 48 is reset and extended, driving the upper sliding rod 44 and the lower sliding rod 45 to move in the opposite direction, so that the eye patch bag clamped by the two bag clamping assemblies 42 is opened on the flexible bag clamping assembly 20. At this time, the air nozzle 411 above the eye patch bag opening can blow air, further assisting the opening of the eye patch bag. The airflow is also conducive to the airflow channel formed inside the eye patch bag, which can carry dust particles and discharge them out of the eye patch bag along the opening direction; then the bag clamping telescopic push rod 420 of the bag clamping assembly 42 is extended and reset, allowing the clamping needle 425 to release the surface of the eye patch bag. At this time, the first lifting rod 41 rises up and disengages from the rotation path of the flexible bag clamping assembly 20, and the rotating table 2 rotates the eye patch bag clamped and opened by the flexible bag clamping assembly 20 to the filling station; S6: When filling materials, the second lifting rod 51 drives the feed hopper 5 to move downward and inserts it into the opened eye patch bag opening to feed materials, and then the second lifting rod 51 rises to allow the feed hopper 5 to detach from the eye patch bag opening, and then the rotating table 2 rotates to rotate the eye patch bag with materials clamped by the flexible bag clamping assembly 20 to the ultrasonic sealing machine 6 for sealing, and finally rotates to the top of the conveyor belt 7, and extends through another horizontal telescopic rod 8 corresponding to the conveyor belt 7, and the push plate 81 pushes open the inner rotating rod 26 again to pull the outer rotating rod 27 and the outer clamp 212, so that the outer clamp 212 opens the clamped and sealed eye patch bag and falls into the upper side of the conveyor belt 7 for outward output.

[0027] It should be noted that the automatic bag opening and packaging equipment for eye patches of the present invention mainly improves the above-mentioned structure, and the functions, components and structures not mentioned therein can be implemented by using components and structures in the prior art that can realize the corresponding functions.

[0028] The present invention has been described in detail above through specific embodiments, but these do not constitute limitations of the present invention. Without departing from the principle of the present invention, those skilled in the art may also make many variations and improvements, which should also be considered as the protection scope of the present invention.

Claims

1. An automatic bag opening and packaging device for eye patches, comprising a fixed platform (1) and a rotating platform (2) rotatably mounted on the lower side of the fixed platform (1), wherein a bag feeder (3), a bag opening device (4), a feed hopper (5), an ultrasonic sealing machine (6) and a conveyor belt (7) are sequentially arranged around the outer periphery of the rotating platform (2), wherein a bag loading mechanical arm (31) is arranged between the bag feeder (3) and the rotating platform (2), and characterized in that: A flexible bag clamping assembly (20) is installed in a circular array on the outer edge of the lower side of the rotating platform (2) for clamping the two sides of the eye patch bag; A first lifting rod (41) and a second lifting rod (51) are respectively installed at the bottom of the bag opening device (4) and the feeding hopper (5); The bag opening device (4) comprises a mounting frame (43) and two bag clamping assemblies (42) which are arranged opposite to each other and are movably arranged on one side of the mounting frame (43); two upper sliding rods (44) and lower sliding rods (45) which are parallel to each other are slidably mounted in the middle of the mounting frame (43); and the upper sliding rods (44) and the lower sliding rods (45) are both locked with mounting seats (49) for mounting the bag clamping assemblies (42) at the same ends thereof, so as to drive the two bag clamping assemblies (42) to move in relative or opposite directions; A rotating long plate (46) is installed in the middle of the installation frame (43) between the upper sliding rod (44) and the lower sliding rod (45) through a rotating shaft, and movable slots (461) are respectively opened on the upper and lower sides of the rotating long plate (46), and the upper sliding rod (44) and the lower sliding rod (45) are respectively fixed with plug posts (47) adapted to be inserted into the inner side of the movable slots (461), wherein the installation frame (43) is installed with a sliding telescopic push rod (48) for pushing the lower sliding rod (45) to slide; The bag clamping assembly (42) comprises a first movable rod (421) and a second movable rod (422) rotatably mounted on the upper side of the mounting seat (49); the front ends of the first movable rod (421) and the second movable rod (422) are both slidably embedded with a sliding clamping rod (423); the front ends of the sliding clamping rod (423) are movably connected to a clamping plate (424), and a plurality of clamping pins (425) are fixedly provided on the surface of the clamping plate (424); the lower sides of the first movable rod (421) and the second movable rod (422) are both rotatably connected to a connecting rod (4201); the mounting seat (49) is installed with a bag clamping telescopic push rod (420), and the telescopic end of the bag clamping telescopic push rod (420) is rotatably connected to the two connecting rods (4201) for pushing and pulling to control the first movable rod (421) and the second movable rod (422) to rotate relative to or oppositely, so that the clamping pins (425) on the two clamping plates (424) clamp the surface of the eye patch bag with each other.

2. The automatic bag opening and packaging equipment for eye patches according to claim 1 is characterized by: A screw rod (427) is rotatably mounted on the upper side of the first movable rod (421) and the second movable rod (422); a slider (428) is locked on the upper side of the sliding clamp rod (423); a thread of the screw rod (427) passes through the middle of the slider (428); a hand wheel is mounted on one end of the screw rod (427) for driving the sliding clamp rod (423) to slide forward and backward to adjust the position.

3. The automatic bag opening and packaging equipment for eye patches according to claim 1 is characterized by: Transmission gears (429) meshing with each other are installed on opposite sides of the first movable rod (421) and the second movable rod (422); an adjusting telescopic rod (426) is hingedly connected to the lower side of the sliding clamp rod (423); and the telescopic end of the adjusting telescopic rod (426) is hingedly connected to the lower side of the clamp plate (424) for controlling the rotation angle of the clamp plate (424).

4. The automatic bag opening and packaging equipment for eye patches according to claim 1 is characterized by: The bag clamping assembly (42) is located below the upper slide bar (44). A sliding frame (410) is provided on the middle sliding sleeve of the upper slide bar (44). The sliding frame (410) is provided with an air nozzle (411) facing downward. The sliding frame (410) is tightly connected to the upper slide bar (44) by screws.

5. The automatic bag opening and packaging equipment for eye patches according to claim 1 is characterized by: The card pins (425) are in the shape of a right triangle, and the card pins (425) of the sliding clamping rods (423) on the first movable rod (421) and the second movable rod (422) are staggered and arranged, and a slot for the card pins (425) to rotate is provided at the front end of the sliding clamping rod (423).

6. The automatic bag opening and packaging equipment for eye patches according to claim 5 is characterized by: The three outer corners of the clamping pin (425) are all rounded, and the clamping pin (425) is locked on the clamping plate (424) by means of screws. The top of the clamping plate (424) is round.

7. The automatic bag opening and packaging equipment for eye patches according to claim 1 is characterized by: The flexible bag clamping assembly (20) comprises two Z-shaped clamping walls (21) arranged opposite to each other, the two Z-shaped clamping walls (21) being elastically connected to each other via a first tension spring (22), one end of the Z-shaped clamping wall (21) being laterally slidably connected to the lower side of the rotating table (2) via a guide rail slider (23), the other end of the Z-shaped clamping wall (21) being locked with an inner clamping piece (211), and an outer clamping piece (212) being movably attached to one side of the inner clamping piece (211), the middle part of the outer clamping piece (212) being connected to the Z-shaped clamping wall (21) The outer end of the Z-shaped clamp wall (21) is hinged, and the outer end of the outer clamp sheet (212) is hinged with an outer rotating rod (27), the middle part of the outer rotating rod (27) is rotatably connected to the middle part of the Z-shaped clamp wall (21), and the inner end of the outer clamp sheet (212) is protruding and arranged between the two outer rotating rods (27), and the outer rotating rod (27) and one side of the Z-shaped clamp wall (21) are connected with a second tension spring (28), so that the outer clamp sheet (212) uses the elastic tensioning force of the second tension spring (28) to clamp the eye patch bag on the inner clamp sheet (211).

8. The automatic bag opening and packaging equipment for eye patches according to claim 7 is characterized by: Two horizontal telescopic rods (8) are installed on the top of the fixed platform (1), and push plates (81) are installed at the telescopic ends of the horizontal telescopic rods (8). The two push plates (81) correspond to one side of the bag loading mechanical arm (31) and the conveyor belt (7) respectively, and the push plates (81) correspond to one end of the inner rotating rod (26) protruding from the upper sides of the two Z-shaped clamping walls (21).

9. The automatic bag opening and packaging equipment for eye patches according to claim 7, characterized in that: A vertical electric push rod (25) is installed on the lower side of the rotating table (2), and a triangular convex plate (24) is locked at the telescopic end of the vertical electric push rod (25), and the inclined surfaces on both sides of the triangular convex plate (24) are in close contact with the opposite side of the inner ends of the two Z-shaped clamping walls (21).

10. A method for using the automatic bag opening and packaging device for eye patches according to any one of claims 1 to 9, characterized in that: The usage steps include the following: S1: The bag feeder (3) conveys the horizontally placed eye patch bag to the front end, and the bag loading robot (31) flips the eye patch bag 90 degrees, grabs and conveys it to the flexible bag clamping assembly (20) for elastic clamping. At this time, the rotating table (2) rotates, and the eye patch bag vertically clamped by the flexible bag clamping assembly (20) is rotated to the bag opening, filling and heat sealing station for processing, while the bag feeder (3) and the bag loading robot (31) sequentially load the next empty flexible bag clamping assembly (20); S2: When the flexible bag clamping assembly (20) rotates the eye patch bag to the bag opening station, the first lifting rod (41) descends, so that the two bag clamping assemblies (42) of the bag opening device (4) correspond to the two sides of the eye patch bag respectively, and then the lower slide bar (45) is moved forward by retracting the sliding telescopic push rod (48), and the upper slide bar (44) is moved backward under the rotation linkage of the rotating long plate (46), so that the upper slide bar (44) and the lower slide bar (45) are relatively displaced, thereby pushing the two bag clamping assemblies (42) toward the surfaces on both sides of the eye patch bag and tightly attached; S3: Before the bag clamping assembly (42) is attached to the eye patch bag, the hand wheel is rotated according to the use requirements to allow the screw rod (427) to thread the slider (428), and the slider (428) simultaneously pushes the sliding clamp rod (423) to slide back and forth for adjustment, thereby adjusting each clamping plate (424) to a suitable position. At this time, according to the clamping requirements, the two rotation clamping states of the clamping plate (424) are adjusted: When the top of the clamping plate (424) is in a forward protruding state, the small-area clamping pins (425) on the top of the two clamping plates (424) cross-clamp the eye patch bag in a local single-point manner; When the front side of the clamping plate (424) is in a vertical state, the plurality of clamping pins (425) on the entire front side of the two clamping plates (424) clamp the eye patch bag in a multi-point cross-clamping manner; S4: After the bag clamping assembly (42) is in close contact with the eye patch bag, the bag clamping telescopic push rod (420) is retracted, and the first movable rod (421) and the second movable rod (422) are pulled respectively by the two connecting rods (4201), so that the first movable rod (421) and the second movable rod (422) are relatively rotated on the mounting seat (49), so that the first movable rod (421) and the second movable rod (422) corresponding to the clamping pins (425) on the two clamping plates (424) cross each other and clamp the surface of the eye patch bag; S5: After the clamping plates (424) on the two bag clamping assemblies (42) clamp the surfaces of both sides of the eye patch bag, the sliding telescopic push rod (48) is reset and extended, driving the upper sliding rod (44) and the lower sliding rod (45) to move in the opposite direction, so that the eye patch bag clamped by the two bag clamping assemblies (42) is opened on the flexible bag clamping assembly (20). At this time, the air nozzle (411) above the eye patch bag opening can blow air, further assisting the opening of the eye patch bag. The airflow is also conducive to the airflow channel formed inside the eye patch bag, which can entrain dust particles and discharge them out of the eye patch bag along the opening direction; then the bag clamping telescopic push rod (420) of the bag clamping assembly (42) is extended and reset, allowing the clamping needle (425) to release the surface of the eye patch bag. At this time, the first lifting rod (41) rises up and disengages from the rotation path of the flexible bag clamping assembly (20), and the rotating table (2) rotates the flexible bag clamping assembly (20) to rotate the clamped and opened eye patch bag to the filling station; S6: When filling materials, the second lifting rod (51) drives the feed hopper (5) to move downward and insert it into the opened eye patch bag opening to feed materials. Then the second lifting rod (51) rises to allow the feed hopper (5) to detach from the eye patch bag opening. Then the rotating table (2) rotates to rotate the eye patch bag with materials clamped by the flexible bag clamping assembly (20) to the ultrasonic sealing machine (6) for sealing. Finally, it rotates to the top of the conveyor belt (7), opens the flexible bag clamping assembly (20), and then the sealed eye patch bag falls to the upper side of the conveyor belt (7) for output.

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