A fully automatic prefabricated bag packaging machine

Abstract

The present invention discloses a fully automatic prefabricated bag packaging machine, which includes a frame and a plurality of material storage plates movably arranged on its top. A material guiding plate is arranged below the material storage plate, and an exhaust assembly is arranged at the material guiding plate. The exhaust assembly includes a first pressing plate and a second pressing plate arranged opposite to each other. A positioning shaft is rotatably arranged on the first pressing plate, and a semi-cylindrical second magnet is arranged on the positioning shaft. A first magnet is arranged on the second pressing plate and is matched with the second magnet. The second magnet attracts the first magnet, so that the second pressing plate contacts the positioning shaft. By arranging the positioning shaft, the distance between the first pressing plate and the second pressing plate can be limited, so that the distance between the first pressing plate and the second pressing plate at each working station is the same, so that the gas extruded inside the mask bag is also the same, ensuring that the thickness of each mask bag is the same after exhaust.

Description

Technical Field

[0001] The present invention relates to the technical field of facial mask filling equipment, and particularly relates to a fully automatic prefabricated bag packaging machine. Background Art

[0002] Facial masks are a category of skin care products; the most basic and important purpose is to make up for the cleaning work that is still insufficient after makeup removal and face washing. On this basis, other maintenance functions are realized by cooperating with other essence components, such as moisturizing, whitening, anti-aging, balancing oil, etc. The forms of facial masks mainly include four types: paste type, peeling type, jelly type, and wet tissue type. The wet tissue type facial mask is generally a single-piece packaged facial mask paper soaked with beauty liquid; when producing the wet tissue type facial mask, it is necessary to fill the beauty liquid into the facial mask bag.

[0003] Chinese Utility Model Patent CN208217117U discloses a facial mask filling equipment, belonging to the field of facial mask production equipment. It includes a base, a fixed plate, a movable plate, a first cylinder, a second cylinder, a first support rod, a second support rod, a static suction cup, a movable suction cup, a ventilation rod, a spring, a limit nut, a hot pressing block, and a hot pressing base. The mouth of the facial mask bag can be fully aligned through the movable suction cup and the static suction cup. The movable plate can squeeze the facial mask bag to discharge the excess air. The second cylinder pushes the hot pressing block to cooperate with the hot pressing base to complete the sealing of the facial mask bag. Using 2 cylinders to complete the 3 steps of pulling open the bag mouth by the suction cup, squeezing and exhausting air, and sealing the facial mask bag reduces the number of cylinders used, simplifies the equipment structure, reduces the equipment cost, and facilitates maintenance.

[0004] The above equipment drives the fixed plate and the movable plate to approach each other through power components such as cylinders to squeeze and exhaust the facial mask bag. However, in the filling machine with four stations or eight stations, due to the large number of filling stations and the lack of relevant structures for positioning between the fixed plate and the movable plate in the above structure, it is difficult to ensure that the distances between the fixed plate and the movable plate at each station are the same, resulting in a certain difference in the thickness of the facial mask bag after exhausting air.

[0005] Therefore, it is necessary to provide a fully automatic prefabricated bag packaging machine to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a fully automatic prefabricated bag packaging machine to solve the problem that in the existing equipment, there is a lack of a structure for positioning relevant components in the exhaust assembly, so it is difficult to ensure that the distances between the fixed plate and the movable plate at each station are the same, resulting in a certain difference in the thickness of the facial mask bag after exhausting air as mentioned in the above background art.

[0007] Based on the above ideas, the present invention provides the following technical solutions: comprising a frame and a plurality of material storage plates movably arranged on the top thereof, a material guide plate is arranged below the material storage plate, an exhaust assembly is arranged at the material guide plate, the exhaust assembly comprises a first pressing plate and a second pressing plate arranged opposite to each other, a positioning shaft is rotatably arranged on the first pressing plate, a semi-cylindrical second magnet is arranged on the positioning shaft, and a first magnet matching with the second magnet is arranged on the second pressing plate;

[0008] An adjusting assembly connected to the positioning shaft is disposed on the outer side of the first pressing plate. When the first pressing plate moves, the positioning shaft is driven to rotate by the positioning assembly so that the first magnet is aligned with or staggered from the second magnet.

[0009] As a further scheme of the present invention: the adjusting assembly includes a sleeve arranged on the outer surface of the first pressure plate, the sleeve being arranged on both sides of the first pressure plate, the sleeve being sleeved on the outer side of the positioning shaft and rotatably cooperating with the same, the outer side of the positioning shaft being sleeved with a winding wheel, the winding wheel and the positioning shaft being connected by a one-way bearing, a fixing frame being fixedly arranged on the outer surface of the first pressure plate, a sliding block being slidably connected inside the fixing frame, a pull rope being arranged between the sliding block and the winding wheel, one end of the pull rope being wound around the winding wheel and fixedly connected with the winding wheel, the other end of the pull rope being inserted into the fixing frame and fixedly connected with the sliding block, the end of the winding wheel away from the first pressure plate being fixedly connected with a shaft sleeve, the shaft sleeve being rotatably sleeved on the outer side of the positioning shaft, a fixing ring being arranged on the outer side of the shaft sleeve, the fixing ring and the sleeve being fixedly connected by a support plate, and a coil spring being arranged between the shaft sleeve and the fixing ring.

[0010] As a further solution of the present invention: positioning blocks are fixedly connected to the front and rear side walls inside the fixed frame, a blind hole is opened on the bottom surface of the sliding block, a limiting rod is slidably connected inside the blind hole, a second spring is arranged inside the blind hole, the second spring is arranged between the sliding block and the limiting rod, a limiting groove is opened at the center of the bottom surface inside the fixed frame, and the bottom ends of the limiting groove and the limiting rod are both arranged to be arc-shaped.

[0011] As a further solution of the present invention: a fixed rod and a movable rod are respectively fixedly connected to the outer sides of the first pressing plate and the second pressing plate, a movable plate is provided on the side of the first pressing plate close to the fixed rod, a fixed plate fixedly connected to the frame is provided on the side of the movable plate away from the first pressing plate, a support plate fixedly connected to the frame is provided on the outer side of the second pressing plate, a U-shaped bracket is fixedly connected to the outer side of the support plate, and the movable rod passes through the support plate and the bracket and slides with them.

[0012] As a further solution of the present invention: a semi-circular notch is formed on the positioning shaft, the second magnet is arranged at this notch, and the end face of the second magnet is flush with the end face of the positioning shaft. The side of the first magnet opposite to the second magnet has different magnetisms, and the end of the first magnet close to the first pressing plate is flush with the inner side face of the second pressing plate.

[0013] As a further solution of the present invention: two limiting plates are fixedly sleeved on the outer side of the moving rod, the limiting plates are arranged on the inner and outer sides of the bracket, and a first spring is sleeved on the outer side of the moving rod, and the first spring is arranged between the limiting plate and the supporting plate.

[0014] As a further solution of the present invention: two support rods are fixedly arranged on the outer side face of the first pressing plate, and the two support rods are symmetrically arranged about the center line of the first pressing plate. Two pulleys are rotatably arranged on the support rods, the fixed frame is arranged between the two pulleys, and one end of the pulling rope passes through between the two pulleys and extends into the fixed frame.

[0015] As a further solution of the present invention: a plurality of balls are rotatably arranged on the outer side face of the slider.

[0016] As a further solution of the present invention: there is a filling assembly at the guiding plate on the frame, a filling head is arranged at the output end of the filling assembly, the filling head includes a pipe body and a fixed block fixedly arranged at the top of the pipe body. A sealing rod is slidably arranged inside the pipe body, the top of the sealing rod is set as a sliding rod, a chute matched with the sliding rod is formed at the bottom of the fixed block, the bottom end of the pipe body is set as a cone shape, and a plurality of through discharging ports are formed at the bottom end of the pipe body. The bottom of the sealing rod is provided with a sealing surface matched with the conical surface at the bottom end of the pipe body.

[0017] As a further solution of the present invention: a guiding groove is formed by the inner wall of the pipe body being recessed outwards. A retaining disc is fixedly sleeved on the outer side of the sealing rod, and the outer circumferential surface of the retaining disc is in contact with the inner wall of the guiding groove. An air vent is arranged at the top end of the sealing rod, and a blowing channel communicated with the air vent is arranged on the sealing rod along its diameter direction. The bottom end of the blowing channel extends to the bottom surface of the sealing rod. A filling port is formed on the side wall of the pipe body, and an air injection port is formed on the pipe body at the position of the air vent. A gap is arranged between the bottom end of the sealing rod and the inner bottom end of the pipe body.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: When it is necessary to discharge the gas inside the mask bag, the first pressing plate is driven by an external power component to move and gradually approach the second pressing plate to squeeze the mask bag. When the first pressing plate is started, the positioning shaft is driven by the adjusting component to rotate 180°, so that the second magnet on the positioning shaft is aligned with the first magnet on the second pressing plate. When the first pressing plate moves near the second pressing plate, the second magnet attracts the first magnet, so that the second pressing plate contacts the positioning shaft. By setting the positioning shaft, the distance between the first pressing plate and the second pressing plate can be limited, so that the distance between the first pressing plate and the second pressing plate at each working station is the same, so that the gas squeezed out inside the mask bag is also the same, ensuring that the thickness of each mask bag is the same after exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings and embodiments.

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the structure of the filling component of the present invention;

[0022] Figure 3 is a schematic diagram of the structure of the storage plate of the present invention;

[0023] Figure 4 is a schematic diagram of the structure of the guide plate of the present invention;

[0024] Figure 5 is a schematic diagram of the structure of the first pressing plate and the second pressing plate of the present invention;

[0025] Figure 6 is a schematic diagram of the structure of the second magnet of the present invention;

[0026] Figure 7 is a schematic diagram of the positional structure of the positioning shaft and the first magnet of the present invention;

[0027] Figure 8 is a schematic diagram of the structure of the slider and the pulling rope of the present invention;

[0028] Figure 9 is the present invention Figure 7 The enlarged schematic diagram of part A;

[0029] Figure 10 is the present invention Figure 8 The enlarged schematic diagram of part B;

[0030] Figure 11 is a schematic diagram of the structure of the limiting rod and the second spring of the present invention;

[0031] Figure 12It is a cross-sectional view of the injection head of the present invention.

[0032] In the figure: 1, frame; 2, first servo motor; 3, material storage plate; 4, material guiding plate; 5, guard plate; 6, injection head; 7, first connecting plate; 8, first lead screw; 9, second lead screw; 10, second connecting plate; 11, second servo motor; 12, fixed block; 13, sliding groove; 14, sliding rod; 15, vent port; 16, sealing rod; 17, air blowing channel; 18, injection port; 19, discharge port; 20, sealing surface; 21, retaining disk; 22, guiding rod; 23, fixed rod; 24, fixed plate; 25, moving plate; 26, first pressing plate; 27, second pressing plate; 28, bracket; 29, support plate; 30, moving rod; 31, first magnet; 32, positioning shaft; 33, support plate; 34, pulley; 35, fixed frame; 36, pulling rope; 37, second magnet; 38, limiting plate; 39, first spring; 40, slider; 41, sleeve; 42, fixed ring; 43, coil spring; 44, positioning block; 45, wire winding wheel; 46, bushing; 47, second spring; 48, limiting rod; 49, limiting groove. Detailed implementation manners

[0033] As Figures 1-5 shown, a fully automatic prefabricated bag packaging machine includes a frame 1, and a plurality of material storage plates 3 are movably distributed on the top of the frame 1. Adjacent two material storage plates 3 are set as a group. During use, the facial mask bags are stacked between the two material storage plates 3 of the same group for later use. A material guiding plate 4 is arranged below the material storage plate 3, and a filling station is arranged at the material guiding plate 4. Through the filling assembly arranged at the filling station, the solution can be filled into the facial mask bags. Specifically, the specific structure of the filling assembly is as Figure 2 shown. It mainly includes an injection head 6 and an injection pipeline connected thereto. It is a common structural setting and technical means in facial mask filling, and will not be elaborated here. However, the injection head 6 will be described in detail later. In addition, by setting the filling assembly as a split structure, it is convenient to separate from the filling station on the frame 1, so as to facilitate the separate cleaning of the filling assembly.

[0034] An arc-shaped guard plate 5 is arranged below the material guiding plate 4. Here, both the material storage plate 3 and the guard plate 5 are set as L-shaped, and a material guiding groove is arranged on the material guiding plate 4. During actual use, the facial mask bags are placed between adjacent two material storage plates 3. The suction cups are driven by power components such as cylinders to move the facial mask bags to the bottom end of the material storage plate 3 one by one. Then the facial mask bags slide along the material guiding plate 4 to the filling station, and the solution is filled into the facial mask bags through the injection head 6. After filling, the facial mask bags move downward to the sealing station for sealing, and finally slide to the conveyor belt through the guard plate 5 for transmission. The above-mentioned sealing station, filling station and the components operating on the facial mask bags are all common technical means on existing facial mask filling machines and will not be elaborated here.

[0035] During actual use, in order to adapt to mask bags of different sizes, a first servo motor 2 is arranged at the top of the frame 1. A first lead screw 8 is drivingly connected to the output shaft of the first servo motor 2. A plurality of right-handed nuts and left-handed nuts with opposite threads are arranged on the first lead screw 8. Adjacent right-handed nuts and left-handed nuts are set as a group. First connecting plates 7 are fixedly arranged on the outer sides of the two right-handed nuts and left-handed nuts in the same group. The storage plate 3 is fixedly connected to the first connecting plate 7. During use, by driving the first lead screw 8 to rotate through the first servo motor 2, the right-handed nuts and left-handed nuts can be driven to move relatively, thereby driving the two storage plates 3 in the same group to move relatively, so as to adapt to mask bags of different sizes.

[0036] And in order to adapt to the adjusted storage plate 3, the guide plate 4 must also be adjusted accordingly. Therefore, a second servo motor 11 is arranged on the frame 1. A second lead screw 9 is drivingly connected to the output shaft of the second servo motor 11. Similarly, a plurality of right-handed nuts and left-handed nuts with the same structure as above are arranged on the second lead screw 9. Second connecting plates 10 are respectively fixedly arranged on the outer sides of the right-handed nuts and left-handed nuts connected to the second lead screw 9. The guide plate 4 is fixedly connected to the second connecting plate 10. Since the principle of its adjustment away from the above storage plate 3 is the same as the adjustment principle, it will not be elaborated here.

[0037] In summary, this structure can adjust the distance between two adjacent storage plates 3 through the cooperation of the arranged first servo motor 2 and the first lead screw 8, so as to be able to adapt to mask bags of different sizes, and has a wider applicability.

[0038] Before sealing, the traditional equipment will discharge the gas inside the mask bag through the exhaust assembly on the frame 1, so as to reduce the volume of the mask bag after sealing and facilitate its later packaging.

[0039] As Figure 5 shown, the exhaust assembly is arranged inside the guide plate 4, and specifically includes a first pressing plate 26 and a second pressing plate 27 arranged oppositely. Fixed rods 23 and moving rods 30 are respectively fixedly connected to the outer side surfaces of the first pressing plate 26 and the second pressing plate 27. Specifically, a moving plate 25 is arranged on one side of the first pressing plate 26 close to the fixed rod 23. A fixing plate 24 fixedly connected to the frame 1 is arranged on the side of the moving plate 25 away from the first pressing plate 26. A guide rod 22 is fixedly arranged on the fixing plate 24, so that the guide rod 22 passes through the moving plate 25 and is slidably connected to it, so as to limit the moving plate 25 and make its movement smoother. A support plate 29 fixedly connected to the frame 1 is arranged outside the second pressing plate 27. A U-shaped bracket 28 is fixedly connected to the outer side surface of the support plate 29. The moving rod 30 passes through the support plate 29 and the bracket 28 and is slidably matched with them.

[0040] During actual use, a power component such as a cylinder is arranged on the fixed plate 24, and the telescopic end of the cylinder is fixedly connected to the movable plate 25. Before the mask bag is sealed, the movable plate 25 and the first pressing plate 26 are driven to move by the cylinder. When the first pressing plate 26 gradually approaches the second pressing plate 27, it will squeeze the mask bag after filling, thereby expelling part of the air inside it.

[0041] like Figures 5-7 As shown, a positioning assembly is provided between the first pressing plate 26 and the second pressing plate 27 to control the distance between the first pressing plate 26 and the second pressing plate 27 so that the gas discharged from each mask bag is the same, thereby making the thickness of each mask bag the same after exhaust.

[0042] Specifically, the positioning assembly includes a positioning shaft 32 rotatably set on the first pressure plate 26, and a semicircular notch is opened on the positioning shaft 32, and a second magnet 37 is arranged at the notch, and the end face of the second magnet 37 is flush with the end face of the positioning shaft 32, and a first magnet 31 matching the second magnet 37 is arranged on the inner side surface of the second pressure plate 27, and the first magnet 31 and the second magnet 37 have different magnetic properties on the opposite sides of the first magnet 31 and the second magnet 37, and the first magnet 31 and the second magnet 37 are both arranged as semicircular columns, and the end of the first magnet 31 close to the first pressure plate 26 is flush with the inner side surface of the second pressure plate 27, and an adjustment assembly connected to the positioning shaft 32 is arranged on the outer side of the first pressure plate 26. During the movement of the first pressure plate 26, the positioning shaft 32 is driven to rotate by the adjustment assembly so that the first magnet 31 and the second magnet 37 are aligned or staggered.

[0043] During actual use, when the gas inside the mask bag needs to be discharged, the first pressing plate 26 is driven by an external power component to move and gradually approach the second pressing plate 27 to squeeze the mask bag. When the first pressing plate 26 is started, the positioning shaft 32 is driven by the adjustment component to rotate 180°, so that the second magnet 37 on the positioning shaft 32 is aligned with the first magnet 31 on the second pressing plate 27. When the first pressing plate 26 moves to the vicinity of the second pressing plate 27, the second magnet 37 attracts the first magnet 31, so that the second pressing plate 27 contacts with the positioning shaft 32. The distance between the first pressing plate 26 and the second pressing plate 27 can be limited by the provided positioning shaft 32, so that each The distance between the first pressing plate 26 and the second pressing plate 27 on each workstation is the same, so that the gas squeezed out from the mask bag is also the same, ensuring that the thickness of each mask bag is the same after exhaust. Then, the first pressing plate 26 is driven by the movable plate 25 to move in the opposite direction to reset. In the initial stage of the first pressing plate 26 starting again, the positioning shaft 32 can be driven to rotate 180° again through the adjustment component, so that the second magnet 37 is staggered with the first magnet 31, which is conducive to the separation between the first pressing plate 26 and the second pressing plate 27, and avoids the deformation of the second pressing plate 27 caused by the attraction of the first magnet 31 and the second magnet 37 during the separation of the first pressing plate 26 and the second pressing plate 27.

[0044] In order to enable the second pressing plate 27 to move a certain distance, two limit plates 38 are fixedly sleeved on the outer side of the moving rod 30, and the limit plates 38 are arranged on the inner and outer sides of the bracket 28, and a first spring 39 is sleeved on the outer side of the moving rod 30, and the first spring 39 is arranged between the limit plates 38 and the support plate 29, as shown in FIG. Figure 6 shown.

[0045] like Figures 5-10 As shown, the first pressing plate 26 and the second pressing plate 27 are both arranged in a horizontal shape, and have a horizontal portion and a vertical portion, and the adjusting assembly includes a sleeve 41 arranged on the outer side of the first pressing plate 26, and the sleeve 41 is arranged on both sides of the horizontal portion of the first pressing plate 26, and the sleeve 41 is sleeved on the outer side of the positioning shaft 32 and rotates with it, so that the positioning shaft 32 can stably rotate relative to the sleeve 41 and the first pressing plate 26, and a winding wheel 45 is also sleeved on the outer side of the positioning shaft 32, and the winding wheel 45 and the positioning shaft 32 are connected by a one-way bearing, and the outer side of the first pressing plate 26 is provided with a winding wheel 45. Two support rods are fixedly arranged on the side, and the two support rods are symmetrically arranged about the center line of the first pressure plate 26, two pulleys 34 are rotatably arranged on the support rods, and a fixed frame 35 is arranged between the two support rods. The fixed frame 35 is fixedly connected to the first pressure plate 26, and a slider 40 is slidably connected inside the fixed frame 35. A pull rope 36 is arranged between the slider 40 and the winding wheel 45. Specifically, one end of the pull rope 36 is wound around the winding wheel 45 and fixedly connected thereto, and the other end of the pull rope 36 passes through the two pulleys 34 and extends to the inside of the fixed frame 35 and is fixedly connected to the slider 40.

[0046] Further, in order for the positioning shaft 32 to be reset, a bushing 46 is fixedly connected to one end of the winding wheel 45 away from the first pressing plate 26. The bushing 46 is rotatably sleeved on the outside of the positioning shaft 32, and a fixing ring 42 is arranged on the outside of the bushing 46. The fixing ring 42 is fixedly connected to the sleeve 41 through a support plate 33. A torsion spring 43 is arranged between the bushing 46 and the fixing ring 42. Both ends of the torsion spring 43 are fixedly connected to the outer circumferential surface of the bushing 46 and the inner circumferential surface of the fixing ring 42 respectively. The arranged torsion spring 43 is beneficial to driving the positioning shaft 32 to rotate in the reverse direction for resetting.

[0047] Even further, strip-shaped grooves are formed on both sides of the fixed frame 35 to facilitate the pulling rope 36 to pass through the strip-shaped grooves and be fixedly connected to the slider 40.

[0048] During actual use, when the mask bag needs to be vented, the first pressing plate 26 will gradually approach the second pressing plate 27 to squeeze the mask bag. When the first pressing plate 26 is started, it will drive the fixed frame 35 to move synchronously. However, since the slider 40 and the fixed frame 35 are slidably matched, under the action of inertia, when the fixed frame 35 moves, the slider 40 inside it will remain stationary relative to the fixed frame 35 for a period of time, so that the slider 40 moves relative to the fixed frame 35, so that the pull rope 36 can be pulled. The pull rope 36 can pull the winding wheel 45 to rotate, and the winding wheel 45 can drive the positioning shaft 32 to rotate through the one-way bearing, thereby driving the second magnet 37 on the positioning shaft 32 to rotate 180°, so that it is aligned with the first magnet 31 on the second pressure plate 27. Afterwards, when the positioning shaft 32 gradually contacts the second pressure plate 27, the first magnet 31 and the second magnet 37 are attracted to each other so that the positioning shaft 32 contacts the second pressure plate 27, so that the distance between the first pressure plate 26 and the second pressure plate 27 on multiple stations is the length of the positioning shaft 32. The same gas is squeezed out of multiple mask bags, and when the first pressure plate 26 stops moving, the force of the coil spring 43 drives the winding wheel 45 to reverse and wind the drawstring 36, thereby driving the slider 40 to reset to the initial state inside the fixed frame 35 for the next use. Since the winding wheel 45 is connected to the positioning shaft 32 through a one-way bearing, the coil spring 43 drives the winding wheel 45 to reverse and reset without driving the positioning shaft 32 to rotate. When the exhaust is completed, the first pressure plate 26 is driven to move in the opposite direction and reset. The attraction between the iron 31 and the second magnet 37 causes the first pressure plate 26 to drive the second pressure plate 27 to move synchronously for a distance during the resetting process. When the first pressure plate 26 starts to reset, the slider 40 will slide relative to the fixed frame 35, thereby driving the positioning shaft 32 to rotate 180° again through the pull rope 36, so that the second magnet 37 rotates 180° and is staggered with the first magnet 31, thereby facilitating the separation of the positioning shaft 32 and the second pressure plate 27 and avoiding deformation of the second pressure plate 27, which is beneficial to extending the service life of the second pressure plate 27.

[0049] like Figure 8 , 11 As shown, in order to position the slider 40, positioning blocks 44 are fixedly connected to the front and rear side walls inside the fixed frame 35. When the first pressure plate 26 and the fixed frame 35 move synchronously to cause the slider 40 to move relative to the fixed frame 35, the slider 40 slides in one direction inside the fixed frame 35 to the positioning block 44 and stops moving. At this time, the pull rope 36 drives the winding wheel 45 and the positioning shaft 32 to rotate 180°, so that the first magnet 31 and the second magnet 37 are aligned or staggered.

[0050] Further, in order to reduce the friction between the slider 40 and the fixed frame 35 during sliding, balls are rotatably arranged on the outer side surface of the slider 40 to facilitate reducing the friction between it and the inner wall of the fixed frame 35.

[0051] As Figure 11 shown, a limiting rod 48 is slidably arranged at the bottom of the slider 40. Specifically, a blind hole is formed in the bottom surface of the slider 40, and the limiting rod 48 is slidably arranged inside the blind hole. In addition, a second spring 47 is arranged inside the blind hole. The second spring 47 is arranged between the slider 40 and the limiting rod 48, and a limiting groove 49 is formed in the inner bottom surface of the fixed frame 35. The limiting groove 49 is arranged at the central position of the inner bottom surface of the fixed frame 35.

[0052] During actual use, when the slider 40 moves relative to the fixed frame 35 and drives the winding wheel 45 to rotate through the pull rope 36, the winding wheel 45 can be driven to reset under the action of the torsion spring 43. During its reset process, the slider 40 can be driven to reset to the central position of the fixed frame 35 through the pull rope 36. In the initial state, the slider 40 is at the central position of the fixed frame 35. When the slider 40 resets to the center of the sliding frame, the limiting rod 48 will be driven to move downward and inserted into the limiting groove 49 under the action of the second spring 47, so as to limit the slider 40 and prevent the slider 40 from exceeding the central position of the fixed frame 35, thereby preventing the positioning shaft 32 from rotating again through the pull rope 36 during the reset process of the slider 40, ensuring that the slider 40 only drives the positioning shaft 32 to rotate 180° during each movement, and ensuring the accuracy of the docking between the first magnet 31 and the second magnet 37. The bottom ends of the limiting groove 49 and the limiting rod 48 are both set to be arc-shaped, so that when the fixed frame 35 starts, the slider 40 can move relative to the fixed frame 35 and the limiting rod 48 can be taken out from the limiting groove 49.

[0053] As Figure 12 shown, the injection head 6 includes a pipe body and a fixed block 12 fixedly arranged at the top of the pipe body. A sealing rod 16 is slidably arranged inside the pipe body. The top of the sealing rod 16 is set as a sliding rod 14, and a sliding groove 13 matching the sliding rod 14 is formed at the bottom of the fixed block 12. The bottom end of the pipe body is set to be conical, and a plurality of through discharge ports 19 are formed on this conical surface. The plurality of discharge ports 19 are arranged in a shower shape, and the bottom of the sealing rod 16 is provided with a sealing surface 20 matching the conical surface at the bottom end of the pipe body.

[0054] Further, a guiding groove is formed by the inner wall of the pipe body recessing outward. A retaining disc 21 is fixedly sleeved on the outer side of the sealing rod 16. The outer circumferential surface of the retaining disc 21 is in contact with the inner wall of the guiding groove to seal the guiding groove. An air vent 15 is provided at the top end of the sealing rod 16. A blowing channel 17 communicating with the air vent 15 is arranged on the sealing rod 16 along its diameter direction. The bottom end of the blowing channel 17 extends to the bottom surface of the sealing rod 16. A charging port 18 connected to an external pipe is provided on the pipe body. At the same time, an air injection port is provided on the pipe body at the position of the air vent 15.

[0055] During actual use, the external pipe injects the solution into the inner cavity of the pipe body through the charging port 18. The pressure of the liquid on the retaining disc 21 will drive it to move upward, and then drive the sealing rod 16 to move upward. At this time, the sealing surface 20 on the sealing rod 16 moves upward and separates from the inner wall of the pipe body, so that the solution can be discharged through the discharge port 19 at the bottom end of the pipe body. After the liquid injection is completed, under the action of gravity, the sealing rod 16 will move downward, so that the sealing surface 20 on the sealing rod 16 fits with the conical surface at the bottom end of the pipe body, thus preventing the solution inside the pipe body from continuing to flow out through the discharge port 19 and causing wire drawing. At this time, there is a gap between the bottom surface of the sealing rod 16 and the inner bottom surface of the pipe body. The gas is injected into the air vent 15 through an external air pipe, and then the residual solution in the discharge port 19 is discharged through the blowing channel 17.

[0056] During actual use, a weighing unit can also be arranged on the route of the mask output to facilitate weighing the bagged masks. For example, a pressure sensor can be arranged on the surface of the guard plate 5, and a controller is arranged at the connection end of the pressure sensor. During actual use, when the weight of the bagged mask does not meet the requirements, the pressure sensor can be triggered, and this analog signal is transmitted to the controller. After analysis and processing by the controller, it is wirelessly transmitted to the control terminal to remind the staff.

Claims

1. A fully automatic pre-made bag packaging machine, comprising a frame and a plurality of material storage plates movably arranged on the top of the frame, wherein a material guide plate is arranged below the material storage plate. Features: The guide plate is provided with an exhaust assembly, and the exhaust assembly includes a first pressing plate and a second pressing plate which are arranged opposite to each other, a positioning shaft is rotatably provided on the first pressing plate, a semi-cylindrical second magnet is provided on the positioning shaft, and a first magnet which matches with the second magnet is provided on the second pressing plate; An adjusting assembly connected to the positioning shaft is disposed on the outer side of the first pressing plate. When the first pressing plate moves, the positioning shaft is driven to rotate by the positioning assembly so that the first magnet and the second magnet are aligned or staggered. The adjusting assembly comprises a sleeve arranged on the outer surface of the first pressure plate, the sleeve being arranged on both sides of the first pressure plate, the sleeve being sleeved on the outer side of the positioning shaft and rotatably cooperating with the same, the outer side of the positioning shaft is sleeved with a winding wheel, the winding wheel and the positioning shaft are connected by a one-way bearing, a fixing frame is fixedly arranged on the outer side of the first pressure plate, a sliding block is slidably connected inside the fixing frame, a pull rope is arranged between the sliding block and the winding wheel, one end of the pull rope is wound around the winding wheel and fixedly connected with the same, the other end of the pull rope penetrates into the fixing frame and is fixedly connected with the sliding block, the end of the winding wheel away from the first pressure plate is fixedly connected with a shaft sleeve, the shaft sleeve is rotatably sleeved on the outer side of the positioning shaft, a fixing ring is arranged on the outer side of the shaft sleeve, the fixing ring and the sleeve are fixedly connected by a supporting plate, and a coil spring is arranged between the shaft sleeve and the fixing ring; Two support rods are fixedly arranged on the outer side of the first pressing plate, and the two support rods are symmetrically arranged about the center line of the first pressing plate, two pulleys are rotatably arranged on the support rods, the fixing frame is arranged between the two pulleys, and one end of the pull rope passes through between the two pulleys and extends to the inside of the fixing frame; A fixed rod and a moving rod are fixedly connected to the outer sides of the first pressing plate and the second pressing plate, respectively; a moving plate is provided on the side of the first pressing plate close to the fixed rod; a fixed plate fixedly connected to the frame is provided on the side of the moving plate away from the first pressing plate; a supporting plate fixedly connected to the frame is provided on the outer side of the second pressing plate; a U-shaped bracket is fixedly connected to the outer side of the supporting plate; the moving rod penetrates the supporting plate and the bracket and slides with them; A semicircular slot is provided on the positioning shaft, the second magnet is arranged at the slot, and the end face of the second magnet is flush with the end face of the positioning shaft, the first magnet and the second magnet have different magnetic properties on the opposite side, and the end of the first magnet close to the first pressure plate is flush with the inner side face of the second pressure plate.

2. A fully automatic pre-made bag packaging machine according to claim 1, Features: Positioning blocks are fixedly connected to the front and rear side walls inside the fixed frame, a blind hole is provided on the bottom surface of the sliding block, a limiting rod is slidably connected inside the blind hole, a second spring is provided inside the blind hole, the second spring is provided between the sliding block and the limiting rod, a limiting groove is provided at the center of the bottom surface inside the fixed frame, and the bottom ends of the limiting groove and the limiting rod are both arranged in an arc shape.

3. An automatic prefabricated bag packaging machine according to claim 1, characterized in that: Two limit plates are fixedly sleeved on the outer side of the moving rod, the limit plates are arranged on the inner and outer sides of the bracket, a first spring is sleeved on the outer side of the moving rod, and the first spring is arranged between the limit plate and the support plate.

4. An automatic prefabricated bag packaging machine according to claim 1, characterized in that: A plurality of balls are rotatably arranged on the outer side surface of the slider.

5. An automatic prefabricated bag packaging machine according to claim 1, characterized in that: There is a filling assembly at the guide plate on the frame, a filling head is arranged at the output end of the filling assembly, the filling head includes a pipe body and a fixed block fixedly arranged at the top of the pipe body, a sealing rod is slidably arranged inside the pipe body, the top of the sealing rod is set as a sliding rod, a chute matching with the sliding rod is opened at the bottom of the fixed block, the bottom end of the pipe body is set as a cone shape, a plurality of through discharge ports are opened on the bottom end of the pipe body, and a sealing surface matching with the conical surface at the bottom end of the pipe body is arranged at the bottom of the sealing rod.

6. An automatic prefabricated bag packaging machine according to claim 5, characterized in that: A guide groove is formed by the inner wall of the pipe body recessing outwards, a stop disc is fixedly sleeved on the outer side of the sealing rod, the outer circumferential surface of the stop disc is in contact with the inner wall of the guide groove, an air vent is arranged at the top end of the sealing rod, a blowing channel communicating with the air vent is arranged on the sealing rod along its diameter direction, the bottom end of the blowing channel extends to the bottom surface of the sealing rod, a filling port is opened on the side wall of the pipe body, an air injection port is opened on the pipe body at the position of the air vent, and a gap is arranged between the bottom end of the sealing rod and the inner bottom end of the pipe body.

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