A device capable of placing a whole stack of plastic packaging bags and separating and conveying them one by one

Abstract

The present invention discloses a device capable of placing a whole stack of plastic packaging bags and separating and conveying them one by one, comprising a frame, a bag storehouse capable of placing a whole stack of plastic packaging bags is provided on the upper part of the frame, a notch is provided at the lower end of the bag storehouse, and a portion of the plastic packaging bag placed in the bag storehouse and at the bottom is exposed to the notch; a bag folding mechanism, a bag extraction mechanism and a bag delivery mechanism are installed on the frame below the bag storehouse, the bag folding mechanism comprises a first rotating frame that can rotate back and forth, a bag folding suction cup is installed on the first rotating frame, and the bag folding suction cup can suck a plastic packaging bag exposed to the notch and then bend the plastic packaging bag as the first rotating frame rotates; the bag extraction mechanism comprises a second rotating frame that can rotate back and forth, a bag clamping mechanism is installed on the second rotating frame, and the bag clamping mechanism can clamp one end of the bent plastic packaging bag as the second rotating frame rotates and pull the plastic packaging bag to place the plastic packaging bag on the bag delivery mechanism. The present invention has a compact structure, small footprint and high action reliability.

Description

Technical Field

[0001] The invention relates to the technical field of packaging equipment manufacturing, in particular to a device capable of placing a whole stack of plastic packaging bags and separating and transmitting them one by one. Background Art

[0002] Nowadays, in order to improve the packaging efficiency of granular materials such as rice and mung beans, a packaging machine is needed. The packaging machine automatically weighs, measures, and fills the materials. After weighing, the materials are poured into plastic packaging bags through the filling pipe. However, some existing packaging machines generally rely on manual bagging. The packaging method that relies on manual bagging requires manual bagging one by one, which has a high labor intensity for operators, and often reduces the packaging efficiency of the packaging machine because the manual bagging speed cannot keep up with the packaging speed of the packaging machine. Therefore, there is an urgent need for bagging machines to cooperate with packaging machines in bagging. And one of the basic functions of the bagging machine is to separate a large stack of plastic packaging bags one by one.

[0003] At present, some technical solutions of bagging machines have been disclosed. For example, on January 5, 2021, a Chinese invention patent application with application number 202011147558.4 and titled "A bagging machine for rice packaging" was disclosed, which includes a frame; a placement table provided on one side of the frame for placing the packaging bags to be grabbed, a manipulator provided above the placement table, a transfer mechanism provided on one side of the manipulator, a loading table located below the transfer mechanism, and a bag-holding device located on one side of the loading table, a rubbing component is provided between the transfer mechanism and the bag-holding device, the rubbing component is used to rub the position close to the mouth of the packaging bag, the bag-holding device includes a bag-holding piece, and the bag-holding piece is arranged corresponding to the rubbing component, so that after the rubbing component rubs the packaging bag open, the bag-holding piece can be inserted into the mouth of the packaging bag. The bag-holding machine for automatic rice packaging provided in this application can automatically bag and automatically open the bag mouth, which is convenient for subsequent rice filling and improves the efficiency of rice packaging processing. However, this bagging machine has a complex structure, occupies a large area, and has a high manufacturing cost. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a device which can place a whole stack of plastic packaging bags and separate and transport them one by one, and has a compact structure, small footprint, low manufacturing cost and high operation reliability.

[0005] To achieve the above object, the technical solution of the present invention is: a device capable of placing a whole stack of plastic packaging bags and separating and conveying them one by one, comprising a frame, a bag storehouse capable of placing the whole stack of plastic packaging bags is provided on the upper part of the frame, a notch capable of pulling out the plastic packaging bags is provided at the lower end of the bag storehouse, and a part of the plastic packaging bags placed in the bag storehouse and at the bottom is exposed to the notch;

[0006] The frame below the bag store is equipped with a bag folding mechanism, a bag extraction mechanism and a bag delivery mechanism, the bag folding mechanism includes a first rotating frame pivotally connected to the frame and rotatable back and forth, the first rotating frame is equipped with a bag folding suction cup, and the bag folding suction cup can suck a plastic packaging bag exposed to the notch and then bend the plastic packaging bag as the first rotating frame rotates;

[0007] The bag drawing mechanism comprises a second rotating frame pivotally connected to the frame and rotatable back and forth, and a bag clamping mechanism is installed on the second rotating frame. The bag clamping mechanism can clamp one end of the folded plastic packaging bag as the second rotating frame rotates, and pull the plastic packaging bag after the bag folding suction cup loses suction to place the plastic packaging bag on the bag feeding mechanism.

[0008] Preferably, the bag storehouse includes a first inclined support plate and a second inclined support plate, which are generally arranged in an inverted figure eight shape, and the first inclined support plate is provided with two baffles perpendicular to the first inclined support plate. When a whole stack of plastic packaging bags is placed in the bag storehouse, the first inclined support plate supports one side of the plastic packaging bags, and the second inclined support plate supports the lower end of the plastic packaging bags. The two baffles block both sides of the whole stack of plastic packaging bags, and the gap between the lower end of the first inclined support plate and the lower end of the second inclined support plate constitutes the notch. This bag storehouse is convenient for placing a whole stack of plastic packaging bags, is easy to operate, and can store a large number of plastic packaging bags.

[0009] As a further improvement, a row of soft brushes is installed at the lower end of the second inclined support plate or a row of soft brushes is installed on a frame near the lower end of the second inclined support plate; the row of soft brushes is substantially parallel to the first inclined support plate, and the row of soft brushes blocks the end of the bottommost plastic packaging bag. The plastic packaging bags are prevented from sticking due to static electricity by the brushes, and the reliability of separating the plastic packaging bags one by one is further improved.

[0010] Further improvement, the outer side of each baffle is fixedly connected with one end of two support rods, the other ends of the two support rods pass through the first inclined support plate and are fixedly connected to a bracket, the rear side of the first inclined support plate is pivotally connected to a screw rod through two shaft seats, each bracket is fixedly connected to a nut, the nut is matched with the screw rod, and the two brackets are rotated to drive the two baffles to move closer to each other or away from each other through the two support rods. In this way, the distance between the two baffles can be adjusted to adapt to plastic packaging bags of different specifications, so as to improve the universal performance of the equipment.

[0011] Preferably, the angle between the first inclined support plate and the second inclined support plate is 80°-100°; more preferably, the angle between the first inclined support plate and the second inclined support plate is 90°. The angle between the first inclined support plate and the horizontal plane is 45°-55°. More preferably, the angle between the first inclined support plate and the horizontal plane is 50°. This makes it easy to place a whole stack of plastic packaging bags and also to pull out a single plastic packaging bag.

[0012] Further improvement, the first rotating frame is driven to rotate back and forth by the first cylinder; a third rotating frame is also installed on the frame below the bag warehouse, the middle part of the third rotating frame is pivoted on the frame, one end of the third rotating frame is equipped with a leveling rod, and the other end of the third rotating frame is connected to the second rotating frame through a driving rod; the third rotating frame is first driven to rotate back and forth by the second cylinder, and the third rotating frame then pulls the second rotating frame to rotate back and forth through the driving rod, or the second rotating frame is first driven to rotate back and forth by the second cylinder, and the second rotating frame then pulls the third rotating frame to rotate back and forth through the driving rod; during the process of the bag clamping mechanism pulling the plastic packaging bag, the leveling rod gradually leveled the plastic packaging bag as the third rotating frame rotates so that the plastic packaging bag is flat on the bag feeding mechanism. The leveling of the leveling rod not only facilitates the plastic packaging bag to be flatly laid on the bag feeding mechanism, but also assists the bag clamping mechanism in pulling the plastic packaging bag, greatly improving the separation speed of the plastic packaging bag and improving the operating efficiency of the entire device.

[0013] Preferably, the bag clamping mechanism includes a bag clamping cylinder whose shell is fixedly connected to the second rotating frame, and a fixed clamping jaw is also fixedly connected to the shell of the bag clamping cylinder. The piston rod of the bag clamping cylinder is hinged to one end of the movable clamping jaw, the middle part of the movable clamping jaw is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the middle part of the fixed clamping jaw, and the fixed clamping jaw cooperates with the movable clamping jaw to clamp one end of the plastic packaging bag.

[0014] As a further improvement, the fixed clamping jaw is provided with a first clamping plate, and the movable clamping jaw is provided with a second clamping plate, and the first clamping plate and the second clamping plate cooperate to clamp one end of the plastic packaging bag. The end surfaces of the first clamping plate and the second clamping plate are respectively provided with rubber strips, and the two rubber strips are used to clamp one end of the plastic packaging bag, thereby improving the reliability of clamping and better protecting the plastic packaging bag.

[0015] Further improvement, a bottom frame is provided under the frame, two parallel guide rails are provided on the bottom frame, the lower end of the frame is mounted on the two guide rails, and the frame can be displaced along the guide rails by driving components, so that each component can be displaced, which is convenient for matching with the packaging machine.

[0016] Further improvement, the bag feeding mechanism is a horizontally arranged conveyor belt, and a bag blocking mechanism, a straightening mechanism, a bag opening mechanism and a bag loading mechanism are also installed on the frame at the output end of the bag feeding mechanism; the bag blocking mechanism blocks the opening end of the plastic packaging bag, the straightening mechanism pushes the two sides of the plastic packaging bag to straighten the plastic packaging bag, the bag opening mechanism is provided with an upper suction cup and a lower suction cup, and the bag opening mechanism opens the mouth of the plastic packaging bag through the upper suction cup and the lower suction cup, and the bag loading mechanism is provided with two struts that can move toward each other, one end of the two struts is inserted into the mouth of the plastic packaging bag through the bag holding piece and supports the plastic packaging bag and then drives the plastic packaging bag to rotate and shift. In this way, the opening of the mouth of the plastic packaging bag and the loading of the bag can be further realized, and the automation level can be further improved.

[0017] The invention has a bag storehouse for placing whole stacks of plastic packaging bags on the upper part of the frame, and a bag folding mechanism, a bag extraction mechanism and a bag delivery mechanism are arranged on the frame below the bag storehouse. The overall structure is compact, the floor space is small, the operation is convenient and the manufacturing cost is low.

[0018] On the other hand, the bag folding suction cup can suck a plastic packaging bag exposed to the notch as the first rotating frame rotates, and then bend the plastic packaging bag, and the plastic packaging bag is pulled by the bag clamping mechanism to place the plastic packaging bag on the bag feeding mechanism. In this way, the reliability of separating the plastic packaging bags one by one is higher by adopting the clamping and pulling method.

[0019] The invention can be used not only for separating and conveying plastic packaging bags one by one, but also for separating and conveying other types of packaging bags with properties similar to those of plastic packaging bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereogram of a first embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A-direction view;

[0022] Figure 3 It is a three-dimensional diagram from another angle of the first embodiment of the present invention;

[0023] Figure 4 It is a three-dimensional diagram of a first embodiment of the present invention in which a frame is hidden and a plastic packaging bag is folded by a bag folding mechanism;

[0024] Figure 5 yes Figure 4 A magnified view of point B;

[0025] Figure 6 It is a three-dimensional diagram of the first embodiment of the present invention, in which the frame is hidden and the bag clamping mechanism moves upward to clamp a plastic packaging bag;

[0026] Figure 7 yes Figure 6Enlarged view of point C;

[0027] Figure 8 It is a three-dimensional diagram of the first embodiment of the present invention, in which the frame is hidden and the bag clamping mechanism moves downward to extract a plastic packaging bag;

[0028] Fig. 9 It is a three-dimensional diagram of the third rotating frame, the second rotating frame, the second cylinder, the driving rod and the leveling rod connected to each other in the first embodiment of the present invention;

[0029] Fig.10 It is a front view of a second embodiment of the present invention;

[0030] Fig.11 It is a rear view of the second embodiment of the present invention, with the frame and the base frame hidden. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Embodiment 1 Figures 1 to 9 As shown, a device capable of placing a whole stack of plastic packaging bags and separating and conveying them one by one comprises a frame 1, a bag store 2 capable of tiltingly placing the whole stack of plastic packaging bags 10 is provided on the upper part of the frame 1, a notch 20 capable of pulling out the plastic packaging bags 10 is provided at the lower end of the bag store 2, and a part of the plastic packaging bag 10 placed in the bag store 2 and at the bottom is exposed to the notch 20;

[0033] The bag warehouse 2 includes a first inclined support plate 21 and a second inclined support plate 22, which are generally arranged in an inverted eight-shape. The first inclined support plate 21 is provided with two baffles 23 perpendicular to the first inclined support plate 21. When a whole stack of plastic packaging bags 10 is placed in the bag warehouse 2, the first inclined support plate 21 supports one side of the plastic packaging bags 10, and the second inclined support plate 22 supports the lower end of the plastic packaging bags 10. The two baffles 23 block both sides of the whole stack of plastic packaging bags 10, and the gap between the lower end of the first inclined support plate 21 and the lower end of the second inclined support plate 22 constitutes the notch 20.

[0034] A row of soft brushes 24 is installed at the lower end of the second inclined support plate 22, and the row of soft brushes 24 can also be set on the frame 1 near the lower end of the second inclined support plate 22; the row of soft brushes 24 is generally parallel to the first inclined support plate 21, and the row of soft brushes 24 blocks the end of the plastic packaging bag 10 at the bottom.

[0035] The outer side of each baffle 23 is fixedly connected to one end of two support rods 25, and the other ends of the two support rods 25 pass through the first inclined support plate 21 and are fixedly connected to a bracket 26. The rear side of the first inclined support plate 21 is pivotally connected to a screw rod 27 through two shaft seats 211. A nut is fixedly connected to each bracket 26, and the nut is matched with the screw rod 27. When the screw rod 27 is rotated, the two brackets 26 drive the two baffles 23 to move closer to each other or away from each other through the two support rods 25. In this way, it is convenient to adjust the distance between the two baffles 23, and it is convenient to adapt to plastic packaging bags 10 of different specifications to improve the versatility of the equipment. One end of the screw rod 27 is fixedly connected to a hand wheel 271. It is convenient to rotate the screw rod 27 manually.

[0036] The included angle between the first inclined support plate 21 and the second inclined support plate 22 may be 90°, and the included angle between the first inclined support plate 21 and the horizontal plane is 50°.

[0037] The frame 1 below the bag storage 2 is provided with a bag folding mechanism 3, a bag extraction mechanism 4 and a bag delivery mechanism 5. The bag folding mechanism 3 includes a first rotating frame 31 pivotally connected to the frame 1 and rotatable back and forth. The first rotating frame 31 is provided with two bag folding suction cups 32. The bag folding suction cups 32 can suck a plastic packaging bag 10 exposed to the notch 20 and then bend the plastic packaging bag 10 as the first rotating frame 31 rotates. The first rotating frame 31 is driven to rotate back and forth by a first cylinder 33. The housing of the first cylinder 33 is hinged to the frame 1, and the piston rod of the first cylinder 33 is hinged to the first rotating frame 31. Both sides of the first rotating frame 31 are pivoted to the frame 1.

[0038] The bag drawing mechanism 4 includes a second rotating frame 41 pivotally connected to the frame 1 and rotatable back and forth, and a bag clamping mechanism 6 is installed on the second rotating frame 41. The bag clamping mechanism 6 can clamp one end of the bent plastic packaging bag 10 as the second rotating frame 41 rotates, and pull the plastic packaging bag 10 to place the plastic packaging bag 10 on the bag feeding mechanism 5 after the bag folding suction cup 32 loses suction.

[0039] The frame 1 below the bag storehouse 2 is also provided with a third rotating frame 7, which is generally L-shaped, and the middle part of the third rotating frame 7 is pivoted on the frame 1. A leveling rod 71 is provided at one end of the third rotating frame 7, and the other end of the third rotating frame 7 is connected to the second rotating frame 41 through two driving rods 72. The third rotating frame 7 is first driven to rotate back and forth by the second cylinder 42, and then the third rotating frame 7 pulls the second rotating frame 41 to rotate back and forth through the driving rod 72. The shell of the second cylinder 42 is hinged on the frame 1, and the piston rod of the second cylinder 42 is hinged to the third rotating frame 7. When the bag clamping mechanism 6 pulls the plastic packaging bag 10, the leveling rod 71 rotates with the third rotating frame 7 to press against the plastic packaging bag 10 and gradually level the plastic packaging bag 10 so that the plastic packaging bag 10 is laid flat on the bag feeding mechanism 5.

[0040] The bag clamping mechanism 6 includes a bag clamping cylinder 61 whose shell is fixedly connected to the second rotating frame 41, and a fixed clamping jaw 62 is also fixedly connected to the shell of the bag clamping cylinder 61. The piston rod of the bag clamping cylinder 61 is hinged to one end of a movable clamping jaw 63, the middle part of the movable clamping jaw 63 is hinged to one end of a connecting rod 64, and the other end of the connecting rod 64 is hinged to the middle part of the fixed clamping jaw 62. The fixed clamping jaw 62 cooperates with the movable clamping jaw 63 to clamp one end of the plastic packaging bag 10.

[0041] The fixed clamping jaw 62 is provided with a first clamping plate 621, and the movable clamping jaw 63 is provided with a second clamping plate 631. The first clamping plate 621 and the second clamping plate 631 cooperate to clamp one end of the plastic packaging bag 10. A first rubber clamping strip 622 is fixedly connected to the end surface of the first clamping plate 621, and a second rubber clamping strip 632 is fixedly connected to the end surface of the second clamping plate 631. The first clamping plate 621 and the second clamping plate 631 cooperate to clamp one end of the plastic packaging bag 10 through the first rubber clamping strip 622 and the second rubber clamping strip 632.

[0042] A base frame 8 is provided below the frame 1, and two parallel guide rails 81 are provided on the base frame 8. The lower end of the frame 1 is mounted on the two guide rails 81, and the frame 1 can be displaced along the guide rails 81 by driving a driving component. The driving component can be a cylinder, and the housing of the cylinder can be hinged to the base frame 8, and the piston rod of the cylinder can be hinged to the frame 1. The cylinder movement can be completed by operating a valve through a control handle 82.

[0043] The bag feeding mechanism 5 is a horizontally arranged conveyor belt, and a bag blocking mechanism 30, a straightening mechanism 40, a bag opening mechanism 50 and a bag loading mechanism 60 are also installed on the frame 1 at the output end of the bag feeding mechanism 5; the bag blocking mechanism 30 blocks the open end of the plastic packaging bag 10, and the bag blocking mechanism 30 includes a bag blocking cylinder 301 and a vertically arranged bag blocking plate 302, the bag blocking plate 302 is fixedly connected to the piston rod of the bag blocking cylinder 301, and the shell of the bag blocking cylinder 301 is fixedly connected to the frame 1, and the bag blocking plate 302 blocks the open end of the plastic packaging bag 10 when it moves upward, and is separated from the open end of the plastic packaging bag 10 when it moves downward;

[0044] The alignment mechanism 40 pushes the two sides of the plastic packaging bag 10 to align the plastic packaging bag 10. The alignment mechanism 40 includes two pairs of vertically arranged alignment rods 401. The frame 1 is provided with an alignment driving component 402. The alignment driving component 402 drives the two pairs of alignment rods 401 to move toward or away from each other. When the two pairs of alignment rods 401 move toward each other, they push the two sides of the plastic packaging bag 10 to align the plastic packaging bag 10.

[0045] The bag opening mechanism 50 is provided with two upper bag opening suction cups 501 and two lower bag opening suction cups 502. The bag opening mechanism 50 opens the bag mouth of the plastic packaging bag 10 through the upper bag opening suction cups 501 and the lower bag opening suction cups 502. The two upper bag opening suction cups 501 are driven to move up and down by the upper driving component 503. The upper driving component 503 is composed of a motor, a screw rod, a nut slider and an upper bracket connected to the slider. The motor drives the screw rod to rotate back and forth. The nut is matched with the motor, and the slider is fixedly connected to the nut. The two upper bag opening suction cups 501 Installed on the upper bracket; the two lower suction cups 502 for bag opening are driven to move up and down by the lower driving component 504, the lower driving component 504 includes upper and lower cylinders installed on the frame 1, the piston rod of the lower cylinder is equipped with a lower bracket, and the two lower suction cups 502 for bag opening are installed on the lower bracket, the two upper suction cups 501 for bag opening and the two lower suction cups 502 for bag opening move toward each other to suck the two sides of the bag opening end of the plastic packaging bag 10, and then the two upper suction cups 501 for bag opening and the two lower suction cups 502 for bag opening move away from each other to open the bag opening of the plastic packaging bag 10;

[0046] The bag loading mechanism 60 is provided with two struts 601 that can move toward each other. One end of the two struts 601 is inserted into the bag mouth of the plastic packaging bag 10 through the bag supporting piece 602 and supports the plastic packaging bag 10, and then drives the plastic packaging bag 10 to rotate and shift. The other ends of the two struts 601 are respectively connected to the driving member 603, and the driving member 603 drives the two struts 601 to move away from or close to each other. The driving member 603 may include two slide seats, and the other ends of the two struts 601 are respectively fixed to the slide seats, and the struts 601 are driven to move through the slide seats; the driving member 603 is installed on the rotating seat 604, and the rotating seat 604 is driven to rotate by the rotating driving member 605 of the cylinder whose two shells are fixed to each other. One piston rod of the rotating driving member 605 is hinged to the frame 1, and the other piston rod of the rotating driving member 605 is hinged to the rotating seat 604, so that the rotating driving member 605 can drive the rotating seat 604 to rotate to four positions.

[0047] The working process of the present invention is as follows: a whole stack of plastic packaging bags 10 is placed on the bag storage 2, and then the first cylinder 33 is actuated to drive the first rotating frame 31 to rotate counterclockwise, and the two bag folding suction cups 32 suck one side of a plastic packaging bag 10 exposed to the notch 20 as the first rotating frame 31 rotates, and then the first cylinder 33 is actuated again to drive the first rotating frame 31 to rotate clockwise back to its original position, and the two bag folding suction cups 32 suck one plastic packaging bag 10 exposed and bend the plastic packaging bag 10, as shown in FIG. Figure 4 , Figure 5 As shown;

[0048] Then the second cylinder 42 is actuated to drive the third rotating frame 7 to rotate counterclockwise, and the third rotating frame 7 then pulls the second rotating frame 41 to rotate clockwise through the driving rod 72, the bag clamping mechanism 6 moves upward, and then the bag clamping cylinder 61 is actuated, and the fixed clamping jaw 62 cooperates with the movable clamping jaw 63 to clamp one end of the plastic packaging bag 10. Figure 6 , Figure 7 As shown;

[0049] Then the second cylinder 42 is activated again, driving the third rotating frame 7 to rotate clockwise, and the third rotating frame 7 then pulls the second rotating frame 41 to rotate counterclockwise through the driving rod 72, and the fixed clamping jaw 62 and the movable clamping jaw 63 clamp one end of the plastic packaging bag 10 and pull the plastic packaging bag 10 downward. In the process of pulling and pulling the plastic packaging bag 10, the flattening rod 71 rotates with the third rotating frame 7 to press against the plastic packaging bag 10 and gradually flatten the plastic packaging bag 10, so that the plastic packaging bag 10 is flattened, and the pulling and separation speed of the plastic packaging bag 10 is also accelerated, as shown in Figure 8; then the bag clamping cylinder 61 is activated again, the fixed clamping jaw 62 is released from the movable clamping jaw 63, and the plastic packaging bag 10 is flatly laid and falls onto the bag feeding mechanism 5;

[0050] Next, the bag feeding mechanism 5 moves the plastic packaging bag 10, the bag blocking cylinder 301 is actuated, and the bag blocking plate 302 blocks the open end of the plastic packaging bag 10 when it moves upward, and the two pairs of straightening rods 401 push the two sides of the plastic packaging bag 10 to straighten the plastic packaging bag 10 when they approach each other, and the bag blocking cylinder 301 is actuated again, and the bag blocking plate 302 moves downward to separate from the open end of the plastic packaging bag 10; the two upper bag opening suction cups 501 and the two lower bag opening suction cups 502 move toward each other to suck the two sides of the bag opening end of the plastic packaging bag 10, and then the two upper bag opening suction cups 501 and the lower bag opening suction cups 502 move toward each other to suck the two sides of the bag opening end of the plastic packaging bag 10, and then the two upper bag opening suction cups 502 and the lower bag opening suction cups 502 move toward each other to suck the two sides of the bag opening end of the plastic packaging bag 10, and then the two upper bag opening suction cups 501 ... The plate 501 and the two lower bag opening suction cups 502 move away from each other to open the mouth of the plastic packaging bag 10, and then the rotating driving member 605 moves to drive the rotating seat 604 to rotate, and the two supporting rods 601 that can move toward each other rotate accordingly, and insert the bag mouth of the plastic packaging bag 10 through the bag supporting piece 602, and then the two supporting rods 601 move away from each other, and the bag supporting piece 602 supports the plastic packaging bag 10, and then the rotating driving member 605 moves again, and the rotating seat 604 rotates, and the two supporting rods 601 carry the plastic packaging bag 10 and cooperate with the packaging machine to bag. This cycle operates one by one.

[0051] If the entire rack 1 needs to be moved, the operation of the control handle 82 can be completed.

[0052] Embodiment 2 Figure 10 to Figure 11As shown, a device capable of placing a whole stack of plastic packaging bags and separating and conveying them one by one is different from the first embodiment in that the second rotating frame 41 is first driven to rotate back and forth by the second cylinder 42, and the second rotating frame 41 then pulls the third rotating frame 7 to rotate back and forth through the driving rod 72. The shell of the second cylinder 42 is hinged to the frame 1, and the piston rod of the second cylinder 42 is hinged to the second rotating frame 41, and the structure of the second rotating frame 41 is slightly different.

[0053] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A device capable of placing a whole stack of plastic packaging bags and separating and conveying them one by one, comprising a frame, characterized in that: The upper part of the frame is provided with a bag storehouse capable of placing a whole stack of plastic packaging bags, and the lower end of the bag storehouse is provided with a notch capable of pulling out the plastic packaging bags, and the bottommost plastic packaging bag placed in the bag storehouse is partially exposed to the notch; The frame below the bag store is equipped with a bag folding mechanism, a bag extraction mechanism and a bag delivery mechanism, the bag folding mechanism includes a first rotating frame pivotally connected to the frame and rotatable back and forth, the first rotating frame is equipped with a bag folding suction cup, and the bag folding suction cup can suck a plastic packaging bag exposed to the notch and then bend the plastic packaging bag as the first rotating frame rotates; The bag-drawing mechanism comprises a second rotating frame pivotally connected to the frame and rotatable back and forth, and a bag-clamping mechanism is mounted on the second rotating frame. The bag-clamping mechanism can clamp one end of the folded plastic packaging bag as the second rotating frame rotates, and pull the plastic packaging bag after the bag-folding suction cup loses suction, and place the plastic packaging bag on the bag-feeding mechanism; A third rotating frame is also installed on the frame below the bag storage, the middle part of the third rotating frame is pivotally connected to the frame, a leveling rod is installed at one end of the third rotating frame, and the other end of the third rotating frame is connected to the second rotating frame through a driving rod; the third rotating frame is first driven to rotate back and forth by the second cylinder, and the third rotating frame then pulls the second rotating frame to rotate back and forth through the driving rod, or the second rotating frame is first driven to rotate back and forth by the second cylinder, and the second rotating frame then pulls the third rotating frame to rotate back and forth through the driving rod; in the process of the bag clamping mechanism drawing and pulling the plastic packaging bag, the leveling rod presses against the plastic packaging bag as the third rotating frame rotates and gradually level the plastic packaging bag so that the plastic packaging bag is flat on the bag feeding mechanism.

2. The device for placing a whole stack of plastic packaging bags and separating and conveying them one by one according to claim 1, characterized in that: The bag warehouse includes a first inclined support plate and a second inclined support plate, which are generally arranged in an inverted eight-shape. Two baffles perpendicular to the first inclined support plate are installed on the first inclined support plate. When a whole stack of plastic packaging bags is placed in the bag warehouse, the first inclined support plate supports one side of the plastic packaging bags, and the second inclined support plate supports the lower end of the plastic packaging bags. The two baffles block both sides of the whole stack of plastic packaging bags, and the gap between the lower end of the first inclined support plate and the lower end of the second inclined support plate constitutes the notch.

3. The device for placing a whole stack of plastic packaging bags and separating and conveying them one by one according to claim 2, characterized in that: A row of soft brushes is installed at the lower end of the second inclined support plate or on a frame near the lower end of the second inclined support plate; the row of soft brushes is generally parallel to the first inclined support plate and blocks the end of the bottommost plastic packaging bag.

4. The device for placing a whole stack of plastic packaging bags and separating and conveying them one by one according to claim 2, characterized in that: The outer side of each baffle is fixedly connected to one end of the two support rods, and the other ends of the two support rods pass through the first inclined support plate and are fixedly connected to a bracket. The rear side of the first inclined support plate is pivotally connected to a screw rod through two axle seats, and a nut is fixedly connected to each bracket, and the nut is matched with the screw rod. When the screw rod is rotated, the two brackets drive the two baffles to move closer to or away from each other through the two support rods.

5. The device for placing a whole stack of plastic packaging bags and separating and conveying them one by one according to claim 2, characterized in that: The included angle between the first inclined support plate and the second inclined support plate is 80°-100°; the included angle between the first inclined support plate and the horizontal plane is 45°-55°.

6. The device for placing a whole stack of plastic packaging bags and separating and conveying them one by one according to claim 1, characterized in that: The first rotating frame is driven to rotate back and forth by a first cylinder.

7. The device for placing a whole stack of plastic packaging bags and separating and conveying them one by one according to claim 1, characterized in that: The bag clamping mechanism includes a bag clamping cylinder whose shell is fixedly connected to the second rotating frame, and a fixed clamping claw is also fixedly connected to the shell of the bag clamping cylinder. The piston rod of the bag clamping cylinder is hinged to one end of the movable clamping claw, the middle part of the movable clamping claw is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the middle part of the fixed clamping claw, and the fixed clamping claw cooperates with the movable clamping claw to clamp one end of the plastic packaging bag.

8. The device for placing a whole stack of plastic packaging bags and separating and conveying them one by one according to claim 7, characterized in that: The fixed clamping jaw is provided with a first clamping plate, and the movable clamping jaw is provided with a second clamping plate. The first clamping plate and the second clamping plate cooperate to clamp one end of the plastic packaging bag.

9. The device for placing a whole stack of plastic packaging bags and separating and conveying them one by one according to claim 1, characterized in that: A bottom frame is arranged below the frame, and two parallel guide rails are arranged on the bottom frame. The lower end of the frame is arranged on the two guide rails, and the frame can be displaced along the guide rails by being driven by a driving component.

10. A device capable of placing a whole stack of plastic packaging bags and separating and conveying them one by one according to any one of claims 1 to 9, characterized in that: The bag feeding mechanism is a horizontally arranged conveyor belt, and a bag blocking mechanism, a straightening mechanism, a bag opening mechanism and a bag loading mechanism are also installed on the frame at the output end of the bag feeding mechanism; The bag blocking mechanism blocks one end of the opening of the plastic packaging bag, the straightening mechanism pushes both sides of the plastic packaging bag to straighten the plastic packaging bag, the bag opening mechanism is provided with an upper suction cup and a lower suction cup, and the bag opening mechanism opens the bag mouth of the plastic packaging bag through the upper suction cup and the lower suction cup, and the bag opening mechanism is provided with two support rods that can move toward each other, one end of the two support rods is inserted into the bag mouth of the plastic packaging bag through the bag supporting piece and supports the plastic packaging bag and then drives the plastic packaging bag to rotate and shift.

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