Feeding device for plastic packaging bag production

Abstract

The invention relates to the technical field of plastic packaging bag production feeding, and discloses a feeding device for plastic packaging bag production, which comprises a working box, and further comprises two mounting plates which are respectively connected to the top of an operation table, and the operation table is fixedly connected between the two mounting plates; the adsorption mechanism is arranged between the two mounting plates and used for adsorbing the plastic packaging bags placed on the operation table; the separating mechanism is arranged on the front mounting plate and used for separating the plastic packaging bags stacked on the operation table; and the conveying mechanism is arranged between the two mounting plates, located on the right side of the adsorption mechanism and used for conveying the separated plastic packaging bags. According to the plastic packaging bag adsorption device, through the arranged adsorption mechanism, a plurality of suction cups can be used for moving, an external air source is used for adsorbing plastic packaging bags, meanwhile, a telescopic rod is used for moving in an adsorption rod, and a first spring is used for supporting so as to adapt to adsorption of stacked plastic packaging bags with different thicknesses.

Description

Technical Field

[0001] The invention relates to the technical field of feeding materials for plastic packaging bag production, in particular to a feeding device for plastic packaging bag production. Background Art

[0002] Plastic packaging bags are a type of packaging bags made of plastic as the main raw material. They are widely used in daily life and industrial production, such as rectangular easy-pull packaging bags of the same specifications. When producing plastic packaging bags, they need to be sent to different assembly lines for printing information.

[0003] For example, the publication number CN 111483626 A discloses a feeding device for producing plastic packaging bags, including a base, a fan is fixed to one side of the top outer wall of the base by bolts, the fan is connected to a conveying pipe by a pipeline, and the conveying pipe is fixed to the base by bolts, a mounting frame is fixed to the top outer wall of the base by bolts, and a lower hopper is fixed to the inner wall of the mounting frame by bolts, the inner walls of both sides of the mounting frame are fixed to the same air lock by bolts, the air lock is connected to the lower hopper by a pipeline, a feed port is provided on the top outer wall of the conveying pipe, and the feed port is connected to the air lock by a pipeline, and a bracket is fixed to the top outer wall of the base by bolts. The present invention effectively prevents raw material particles from falling into dust during the conveying process through the coordination between the fan, the air lock and the conveying pipe, and the dust mixed in the raw material particles can be effectively removed by the filter tube in the feeding mechanism and collected by the collection box; However, when the above device collects plastic packaging bags, when plastic packaging bags of the same specifications are stacked on one side for feeding, they will stick together due to the characteristics of electrostatic adsorption. When feeding, multiple plastic bags will be adsorbed at the same time. Therefore, a feeding device for plastic packaging bag production is proposed to solve the above-mentioned problem. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a feeding device for producing plastic packaging bags in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a feeding device for producing plastic packaging bags, including a working box, and also including: Two mounting plates are respectively connected to the top of the operating table, and the operating table is fixedly connected between the two mounting plates; The adsorption mechanism is arranged between the two mounting plates and is used for adsorbing the plastic packaging bag placed on the operating table; A separation mechanism, arranged on the front mounting plate, for separating the plastic packaging bags stacked on the operating table; The conveying mechanism is arranged between the two mounting plates and is located on the right side of the adsorption mechanism, and is used for conveying the separated plastic packaging bags; Wherein, the adsorption mechanism comprises: The movable plate moves on the arc holes provided on the front and rear mounting plates through movable rods fixedly connected at the front and rear sides; The mounting plate is also provided with an arc groove, and the movable plate is provided with a limit block which slides on the arc groove; A plurality of adsorption rods are fixedly connected to the bottom of the movable plate; A plurality of telescopic rods are movably connected to the inner wall of the adsorption rod, and a suction cup is fixedly connected to the bottom of the telescopic rod; A plurality of springs are sleeved on the outer wall of the telescopic rod and connected to the adsorption rod and the suction cup; A conduit is connected to the top of the movable plate and is used for connecting to an external gas source.

[0006] Preferably, the adsorption rod, telescopic rod, suction cup and conduit are connected, and the plastic packaging bag is adsorbed through an external air source.

[0007] Preferably, the separation mechanism comprises: Airbag 1, fixedly connected to the inner wall of the box; A wedge-shaped block 1 is slidably connected to the inner wall of the box body and is used to push the airbag 1 to contract; A plurality of air holes are provided on the front mounting plate and are respectively connected to airbag 1, and are respectively used for air intake and exhaust of airbag 1, and are used for separating the stacked plastic packaging bags.

[0008] Preferably, the separation mechanism further comprises: The two boxes are fixedly connected to the two mounting plates respectively; A fixing rod, fixedly connected to the box body in front; A push block is slidably connected to the outer wall of the fixed rod, and a limiting groove is provided on the push block, and the push block contacts the outer wall of the movable rod, and the bottom of the push block contacts the top of the wedge block; Spring 2 is sleeved on the outer wall of the fixing rod and is used for pushing the pushing block to move rightward.

[0009] Preferably, the conveying mechanism comprises: Two conveying shafts are rotatably connected between the two mounting plates, and the outer walls of the two conveying shafts are transmission-connected with conveyor belts for conveying the plastic packaging bags adsorbed by the suction cups; A rotating shaft is rotatably connected between the two mounting plates and drives the plastic packaging bag to separate from the suction cup through a plurality of rubber wheels connected to the outer wall of the rotating shaft; An arc-shaped guide plate is fixedly connected between the two mounting plates, and the bottom of the arc-shaped guide plate contacts the rubber wheel for guiding the plastic packaging bag; The guide rod is rotatably connected between the two mounting plates and is used to cooperate with the rubber wheel to guide the plastic packaging bag.

[0010] Preferably, the conveying mechanism further comprises: Two slide rails, fixedly connected to the back side of the rear mounting plate; Straight groove teeth, slidingly connected on two slide rails; Gear 1, fixedly connected to the back extension end of the conveying shaft on the left side; Gear 2 and the fan gear are respectively fixedly connected to the back extension end of the rotating shaft, and the inner sides of the straight groove teeth of the fan gear are meshed, which are used to drive the straight groove teeth to move on the slide rail. Gear 1 and gear 2 are meshed. A motor is fixedly connected to the front side of the mounting plate in front, and the motor is fixedly connected to the front extension end of the conveying shaft, which is used to drive the conveying shaft to rotate.

[0011] Preferably, the conveying mechanism further comprises: Push rods 2 are hinged on the back of the straight groove teeth; Two slide bars are fixedly connected to the back box respectively; A sliding block, slidably connected to the outer walls of the two sliding rods and in contact with the second push rod; The sliding block is provided with a straight slot hole, which fits with the outer wall of the movable rod; The spring four is sleeved on the outer wall of the slide bar and pushes the slide bar to move.

[0012] Preferably, a blower mechanism is provided below the conveyor belt to blow the plastic packaging bag on the suction cup upward to contact the arc-shaped guide plate; The hair dryer structure comprises: The baffle is movably connected above the operating table and is used to push the plastic packaging bag to limit the position; Two fixing plates, fixed to connect between the work box and the operating table; The bottom of the baffle is fixedly connected to two guide rails, and slides on the operating table through the guide rails; A movable bar is fixedly connected to the bottom of the two guide rails and slides on the top of the working box; The adjusting screw is rotatably connected between the two fixed plates through a bearing, and a knob is connected to the right side of the movable fixed plate to rotate the adjusting screw; The adjusting screw is threadedly connected with the movable bar.

[0013] Preferably, the hair dryer mechanism further comprises: The second airbag is fixedly connected to the top of the operating table, and the baffle is hollow inside, and its bottom moves relative to the second airbag; The push plate is connected to the rear mounting plate through a push rod, and the outer wall of the push rod is sleeved with a spring three, and the two ends of the spring three are respectively connected to the push plate and the rear mounting plate, and are used to pull the push plate to move toward the rear mounting plate; The supporting plate is fixedly connected between the two mounting plates and moves relative to the baffle plate.

[0014] Preferably, the support plate is provided with a plurality of through holes, a plurality of air heads are installed on the top of the airbag 2 and are in intermittent contact with the through holes, and an air inlet is provided at the bottom of the operating table and is connected with the airbag 2; A wedge-shaped block 2 is fixedly connected to the straight groove teeth, and is wedge-shapedly arranged on the push rod and fits with one side of the push rod; A stop bar is fixedly connected between the two mounting plates, and the top and bottom of the stop bar are in contact with the outer walls of the baffle plate and the guide rod respectively.

[0015] The present invention adopts the above technical solution to bring the following beneficial effects: 1. The feeding device for the production of plastic packaging bags can be moved by using a plurality of suction cups through the adsorption mechanism, and the plastic packaging bags can be adsorbed by using an external air source. At the same time, the telescopic rod is moved inside the adsorption rod and supported by a spring to adapt to the adsorption of plastic packaging bags stacked with different thicknesses.

[0016] 2. The feeding device for producing plastic packaging bags uses a separation mechanism to release gas using an air bag. When the plastic packaging bags are adsorbed, the plastic packaging bags are blown by the gas at the moment of separation, thereby separating the stacked plastic packaging bags to facilitate the suction cup to adsorb the plastic packaging bags and avoid adsorbing multiple plastic bags at the same time.

[0017] 3. The feeding device for the production of plastic packaging bags uses a set conveying mechanism and a set conveyor belt to convey the plastic packaging bags sucked by the suction cup to achieve feeding; at the same time, the plastic packaging bags are rotated and separated by a rotating rubber wheel to separate the plastic packaging bags from the suction cup to facilitate the feeding of the plastic packaging bags.

[0018] 4. The feeding device for the production of plastic packaging bags, through the blower mechanism, when the straight tooth groove moves left and right, the wedge block 2, the push rod, the push plate and the spring 3 cooperate to realize the extrusion of the airbag 2, and blow the airbag gas to the plastic packaging bag to promote its contact with the arc guide plate, facilitate contact with the guide wheel, peel off the plastic packaging bag, and promote loading and unloading from the suction cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the back structure of the present invention; Figure 3 It is a schematic diagram of the explosion structure of the present invention; Figure 4 This is a schematic diagram of the explosion structure of the hair dryer of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 The local structure of the conveying mechanism of the present invention is shown in FIG. Figure 1 ; Figure 7 The local structure of the conveying mechanism of the present invention is shown in FIG. Figure 2 ; Figure 8 It is a schematic diagram of the explosion structure of the conveying mechanism of the present invention.

[0020] In the figure: 1, working box; 2, operating table; 3, mounting plate; 4, adsorption mechanism; 41, movable plate; 42, movable rod; 43, adsorption rod; 44, telescopic rod; 45, spring 1; 46, suction cup; 47, guide tube; 5, separation mechanism; 51, box; 52, fixed rod; 53, spring 2; 54, push block; 55, wedge block 1; 56, air bag 1; 6, blower mechanism; 61, baffle; 62, air bag 2; 63, push plate; 64, push rod; 65, spring Spring three; 66, support plate; 7, conveying mechanism; 71, conveying shaft; 72, conveyor belt; 73, guide rod; 74, rotating shaft; 75, rubber wheel; 76, arc guide plate; 77, slide rail; 78, straight groove tooth; 79, gear one; 710, gear two; 711, fan gear; 712, push rod one; 713, slider; 714, slide rod; 715, spring four; 716, wedge block two; 8, gear bar; 9, movable bar; 10, fixed plate; 11, adjusting screw. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-8 One embodiment of the present invention is: a feeding device for producing plastic packaging bags, comprising a working box 1, and also comprising: Two mounting plates 3 are respectively connected to the top of the operating table 2, and the operating table 2 is fixedly connected between the two mounting plates 3; The adsorption mechanism 4 is arranged between the two mounting plates 3 and is used for adsorbing the plastic packaging bag placed on the operating table 2; A separation mechanism 5, arranged on the front mounting plate 3, for separating the plastic packaging bags stacked on the operating table 2; The conveying mechanism 7 is arranged between the two mounting plates 3 and located on the right side of the adsorption mechanism 4, and is used to convey the separated plastic packaging bags; Wherein, the adsorption mechanism 4 comprises: The movable plate 41 moves on the arc-shaped holes opened on the front and rear mounting plates 3 through movable rods 42 fixedly connected at the front and rear sides; The mounting plate 3 is also provided with an arc groove, and a limit block is provided on the movable plate 41 and slides on the arc groove; A plurality of adsorption rods 43 are fixedly connected to the bottom of the movable plate 41; A plurality of telescopic rods 44 are movably connected to the inner wall of the adsorption rod 43, and a suction cup 46 is fixedly connected to the bottom of the telescopic rod 44; A plurality of springs 45 are sleeved on the outer wall of the telescopic rod 44 and connected to the adsorption rod 43 and the suction cup 46; The conduit 47 is connected to the top of the movable plate 41 and is used to connect to an external gas source.

[0023] The adsorption rod 43, the telescopic rod 44, the suction cup 46 and the conduit 47 are connected and adsorb the plastic packaging bag through an external air source.

[0024] Working principle: all the stacked plastic packaging bags are placed on the operating table 2, and then the movable plate 41 is moved forward and backward, and driven by the movable rod 42, and the limit block is used for limiting, so as to pull the movable plate 41 to move and then move on the arc hole, and then the suction cup 46 moves to the lowest point of the arc hole, contacts and squeezes the plastic packaging bag, and then adsorbs it through the external air source, and conducts through the conduit 47, the adsorption rod 43 and the telescopic rod 44, and then moves in the arc hole, and when moving to the right, the plastic packaging bag adsorbed on the suction cup 46 is sucked to the conveying mechanism 7 for transmission; At the same time, the spring 45 is used to provide deformation, and adaptive adsorption is performed when it contacts plastic packaging bags with different stacking thicknesses.

[0025] See also Figure 1-8 Based on the above embodiment, in another embodiment of the present invention, the separation mechanism 5 includes: Airbag 1 56, fixedly connected to the inner wall of the box body 51; A wedge block 55 is slidably connected to the inner wall of the box body 51 and is used to push the air bag 56 to shrink; A plurality of air holes are provided on the front mounting plate 3 and are respectively connected to the airbag 1 56 , and are respectively used for air intake and exhaust of the airbag 1 56 , and are used for separating the stacked plastic packaging bags.

[0026] The separation mechanism 5 also includes: Two boxes 51 are fixedly connected to two mounting plates 3 respectively; A fixing rod 52, fixedly connected to the front box 51; The push block 54 is slidably connected to the outer wall of the fixed rod 52, and a limiting groove is provided on the push block 54, and contacts with the outer wall of the movable rod 42, and the bottom of the push block 54 contacts with the top of the wedge block 1 55; The second spring 53 is sleeved on the outer wall of the fixing rod 52 and is used to push the push block 54 to move rightward.

[0027] Working principle: When the suction cup 46 is sucking the plastic packaging bag, the movable rod 42 in front moves to drive the push block 54 to move on the fixed rod 52 and squeeze the spring 45. At the same time, when the push block 54 moves, it squeezes the wedge block 55 to move downward, and then squeezes the air bag 56, so that the gas in the air bag 56 is discharged outward, and the stacked multiple plastic packaging bags are blown apart to prevent the suction cup 46 from sucking multiple plastic packaging bags; At the same time, when the suction cup 46 moves, the spring 2 53 is reset and pushes the push block 54 to move right, thereby contacting the wedge block 1 55, thereby releasing the squeezing of the airbag 1 56, and the reset spring inside the airbag 1 56 resets the airbag 1 56 to achieve automatic inflation.

[0028] See also Figure 1-8 Based on the above embodiment, in another embodiment of the present invention, the conveying mechanism 7 includes: Two conveying shafts 71 are rotatably connected between the two mounting plates 3, and the outer walls of the two conveying shafts 71 are transmission-connected with a conveyor belt 72 for conveying the plastic packaging bag adsorbed by the suction cup 46; The rotating shaft 74 is rotatably connected between the two mounting plates 3 and drives the plastic packaging bag to separate from the suction cup 46 through a plurality of rubber wheels 75 connected to the outer wall thereof; The arc-shaped guide plate 76 is fixedly connected between the two mounting plates 3, and the bottom of the arc-shaped guide plate 76 is in contact with the rubber wheel 75, and is used to guide the plastic packaging bag; The guide rod 73 is rotatably connected between the two mounting plates 3 and is used to cooperate with the rubber wheel 75 to guide the plastic packaging bag.

[0029] The conveying mechanism 7 also includes: Two slide rails 77, fixedly connected to the back side of the rear mounting plate 3; Straight groove teeth 78, slidably connected to two slide rails 77; Gear 1 79, fixedly connected to the back extension end of the left conveying shaft 71; Gear 2 710 and fan gear 711 are respectively fixedly connected to the back extension end of the rotating shaft 74, and the inner side of the straight groove teeth 78 of the fan gear 711 is meshed, which is used to drive the straight groove teeth 78 to move on the slide rail 77. Gear 1 79 and gear 2 710 are meshed. A motor is fixedly connected to the front side of the front mounting plate 3, and the motor is fixedly connected to the front extension end of the conveying shaft 71, which is used to drive the conveying shaft 71 to rotate.

[0030] The conveying mechanism 7 also includes: Push rods 2 712 are respectively hinged on the back side of the straight groove teeth 78; Two slide bars 714 are respectively fixedly connected to the back box 51; The slider 713 is slidably connected to the outer walls of the two slide bars 714 and contacts the second push rod 712; The slider 713 is provided with a straight slot hole, and fits with the outer wall of the movable rod 42; The spring four 715 is sleeved on the outer wall of the slide bar 714 and pushes the slide block 713 to move.

[0031] A blower mechanism 6 is provided below the conveyor belt 72 for blowing the plastic packaging bag on the suction cup 46 upward to contact the arc-shaped guide plate 76 .

[0032] Working principle: By starting the motor, the conveying shaft 71 is driven to rotate, and then the feeding belt 72 is driven to feed the material, and at the same time, the gear 1 79 is driven to rotate, so as to drive the gear 2 710 to rotate, and then the rotating shaft 74 is driven to rotate synchronously, and then the multiple rubber wheels 75 are driven to rotate, so as to move the plastic packaging bag adsorbed by the suction cup 46, so that it is separated from the suction cup 46, and then the plastic packaging bag is dropped to the guide rod 73 and the feeding belt 72 for conduction, so as to guide the plastic packaging bag from the suction cup 46 to the guide rod 73 and the feeding belt 72 for conduction; When the rotating shaft 74 rotates, the sector gear 711 is driven to rotate, and intermittently contacts the upper and lower grooves of the straight groove teeth 78, thereby continuously pushing the straight groove teeth 78 to move forward and backward. When the straight groove teeth 78 move to the left, the push rod 1 712 pushes and contacts the slider 713 to move, thereby pushing the movable rod 42 to drive the movable plate 41 to move, so as to achieve the suction of the plastic packaging bag. At the same time, when the straight groove teeth 78 moves to the right, the spring 4 715 pushes the slider 713 to reset, thereby driving the sucked plastic packaging bag to be transferred.

[0033] See also Figure 1-8 Based on the above embodiment, in another embodiment of the present invention, the hair dryer structure 6 includes: The baffle 61 is movably connected above the operating table 2 and is used to push the plastic packaging bag to limit its position; Two fixing plates 10, fixedly connected between the working box 1 and the operating table 2; The bottom of the baffle 61 is fixedly connected to two guide rails, and slides on the operating table 2 through the guide rails; The movable bar 9 is fixedly connected to the bottom of the two guide rails and slides on the top of the working box 1; The adjusting screw 11 is rotatably connected between the two fixing plates 10 through a bearing, and a knob is connected to the fixing plate 10 on the right side to rotate the adjusting screw 11; The adjusting screw 11 is threadedly connected to the movable bar 9 .

[0034] The hair dryer structure 6 also includes: The second airbag 62 is fixedly connected to the top of the operating table 2, and the baffle 61 is hollow inside, and its bottom moves relative to the second airbag 62; The push plate 63 is connected to the rear mounting plate 3 through a push rod 64, and a spring 3 65 is sleeved on the outer wall of the push rod 64. The two ends of the spring 3 65 are respectively connected to the push plate 63 and the rear mounting plate 3, and are used to pull the push plate 63 to move toward the rear mounting plate 3. The supporting plate 66 is fixedly connected between the two mounting plates 3 and moves relative to the baffle 61 .

[0035] The support plate 66 is provided with a plurality of through holes, a plurality of air heads are installed on the top of the airbag 62 and are in intermittent contact with the through holes, and an air inlet hole is provided at the bottom of the operating table 2 and is in communication with the airbag 62; A wedge block 2 716 is fixedly connected to the straight groove teeth 78, and is wedge-shapedly arranged on the push rod 64 and fits with one side of the push rod 64; A stop bar 8 is fixedly connected between the two mounting plates 3 , and the top and bottom of the stop bar 8 are in contact with the outer walls of the baffle plate 61 and the guide rod 73 respectively.

[0036] Working principle: When the straight tooth groove 78 moves to the right, the wedge block 716 moves, and then comes into contact with the push rod 64, thereby pushing the push rod 64 to move inward, so as to push the push plate 63 to move, so as to squeeze the air bag 62, release the gas inside it, and then spray it out through the air head at the top, so as to blow the plastic packaging bag upward, so that the plastic packaging bag contacts the arc guide plate 76 and the rubber wheel 75, and realizes stable loading and unloading from the suction cup 46 to the conveyor belt 72; At the same time, when the straight tooth groove 78 moves to the left, the wedge block 2 716 moves to the left and breaks away from the contact with the push rod 64, so that under the action of the internal spring 3 65, the push plate 63 and the push rod 64 are pushed to reset and realize automatic inflation; When shielding plastic packaging bags of different sizes, the adjusting screw is rotated by turning the knob to drive the movable bar 9 to move, thereby driving the baffle 61 to move through the guide rail, so that the baffle 61 limits the plastic packaging bag.

[0037] The present invention provides a feeding device for producing plastic packaging bags. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A feeding device for producing plastic packaging bags, comprising a working box (1), characterized in that: Also includes: Two mounting plates (3) are respectively connected to the top of the operating table (2), and the operating table (2) is fixedly connected between the two mounting plates (3); An adsorption mechanism (4) is arranged between the two mounting plates (3) and is used to adsorb a plastic packaging bag placed on the operating table (2); A separation mechanism (5), arranged on the front mounting plate (3), and used for separating the plastic packaging bags stacked on the operating table (2); A conveying mechanism (7) is arranged between the two mounting plates (3) and is located on the right side of the adsorption mechanism (4), and is used for conveying the separated plastic packaging bags; Wherein, the adsorption mechanism (4) comprises: The movable plate (41) moves on arc-shaped holes formed on the front and rear mounting plates (3) via movable rods (42) fixedly connected at the front and rear sides; The mounting plate (3) is also provided with an arc-shaped groove, and a limit block is provided on the movable plate (41) and slides on the arc-shaped groove; A plurality of adsorption rods (43) fixedly connected to the bottom of the movable plate (41); A plurality of telescopic rods (44) are movably connected to the inner wall of the adsorption rod (43), and a suction cup (46) is fixedly connected to the bottom of the telescopic rod (44); A plurality of springs (45) are sleeved on the outer wall of the telescopic rod (44) and connected to the adsorption rod (43) and the suction cup (46); A conduit (47) is connected to the top of the movable plate (41) and is used to connect to an external gas source.

2. A feeding device for producing plastic packaging bags according to claim 1, characterized in that: The adsorption rod (43), the telescopic rod (44), the suction cup (46) and the conduit (47) are connected to each other and adsorb the plastic packaging bag through an external air source.

3. A feeding device for producing plastic packaging bags according to claim 2, characterized in that: The separation mechanism (5) comprises: Airbag 1 (56), fixedly connected to the inner wall of the box body (51); A wedge-shaped block (55) is slidably connected to the inner wall of the box (51) and is used to push the airbag (56) to contract; The front mounting plate (3) is provided with a plurality of air holes which are respectively connected to the airbag one (56) and are respectively used for air intake and exhaust of the airbag one (56) and for separating the stacked plastic packaging bags.

4. A feeding device for producing plastic packaging bags according to claim 3, characterized in that: The separation mechanism (5) further comprises: Two boxes (51) are respectively fixedly connected to two mounting plates (3); A fixing rod (52) fixedly connected to the front box (51); A push block (54) is slidably connected to the outer wall of the fixed rod (52), and a limiting groove is provided on the push block (54) and contacts the outer wall of the movable rod (42), and the bottom of the push block (54) contacts the top of the wedge block (55); Spring 2 (53) is sleeved on the outer wall of the fixing rod (52) and is used to push the pushing block (54) to move rightward.

5. A feeding device for producing plastic packaging bags according to claim 4, characterized in that: The conveying mechanism (7) comprises: Two conveying shafts (71) are rotatably connected between the two mounting plates (3), and the outer walls of the two conveying shafts (71) are drivingly connected to a conveying belt (72) for conveying the plastic packaging bag adsorbed by the suction cup (46); A rotating shaft (74) is rotatably connected between the two mounting plates (3) and drives the plastic packaging bag to separate from the suction cup (46) through a plurality of rubber wheels (75) connected to the outer wall of the rotating shaft (74); An arc-shaped guide plate (76) is fixedly connected between the two mounting plates (3), and the bottom of the arc-shaped guide plate (76) is in contact with the rubber wheel (75) for guiding the plastic packaging bag; The guide rod (73) is rotatably connected between the two mounting plates (3) and is used to cooperate with the rubber wheel (75) to guide the plastic packaging bag.

6. A feeding device for producing plastic packaging bags according to claim 5, characterized in that: The conveying mechanism (7) further comprises: Two slide rails (77) fixedly connected to the back side of the rear mounting plate (3); Straight groove teeth (78) are slidably connected to the two slide rails (77); Gear 1 (79), fixedly connected to the back extension end of the left conveying shaft (71); Gear 2 (710) and the fan-shaped gear (711) are respectively fixedly connected to the back extension end of the rotating shaft (74), and the inner side of the straight groove teeth (78) of the fan-shaped gear (711) is meshed, and is used to drive the straight groove teeth (78) to move on the slide rail (77). Gear 1 (79) and gear 2 (710) are meshed. A motor is fixedly connected to the front side of the front mounting plate (3), and the motor is fixedly connected to the front extension end of the conveying shaft (71) and is used to drive the conveying shaft (71) to rotate.

7. A feeding device for producing plastic packaging bags according to claim 6, characterized in that: The conveying mechanism (7) further comprises: Push rods 2 (712) are respectively hinged on the back sides of the straight groove teeth (78); Two sliding rods (714) are respectively fixedly connected in the rear box body (51); A sliding block (713) is slidably connected to the outer walls of the two sliding rods (714) and contacts the second push rod (712); The sliding block (713) is provided with a straight slot hole and is fitted with the outer wall of the movable rod (42); The spring four (715) is sleeved on the outer wall of the slide bar (714) and pushes the slide block (713) to move.

8. A feeding device for producing plastic packaging bags according to claim 7, characterized in that: A blower mechanism (6) is provided below the conveyor belt (72) for blowing the plastic packaging bag on the suction cup (46) upward to contact the arc-shaped guide plate (76); The hair dryer structure (6) comprises: A baffle (61) movably connected to the top of the operating table (2) and used to push the plastic packaging bag to limit its position; Two fixing plates (10) fixedly connected between the working box (1) and the operating table (2); The bottom of the baffle (61) is fixedly connected to two guide rails, and slides on the operating table (2) via the guide rails; A movable bar (9) is fixedly connected to the bottom of the two guide rails and slides on the top of the working box (1); The adjusting screw (11) is rotatably connected between the two fixing plates (10) via a bearing, and a knob is connected to the right side of the fixing plate (10) so as to rotate the adjusting screw (11); The adjusting screw (11) is threadedly connected to the movable bar (9).

9. A feeding device for producing plastic packaging bags according to claim 8, characterized in that: The hair dryer structure (6) further comprises: The second airbag (62) is fixedly connected to the top of the operating table (2), and the baffle (61) is hollow inside, and its bottom moves relative to the second airbag (62); The push plate (63) is connected to the rear mounting plate (3) via a push rod (64), and a spring (65) is sleeved on the outer wall of the push rod (64), and the two ends of the spring (65) are respectively connected to the push plate (63) and the rear mounting plate (3) for pulling the push plate (63) to move toward the rear mounting plate (3); The support plate (66) is fixedly connected between the two mounting plates (3) and moves relative to the baffle plate (61).

10. A feeding device for producing plastic packaging bags according to claim 9, characterized in that: The support plate (66) is provided with a plurality of through holes, a plurality of air heads are installed on the top of the second airbag (62) and are in intermittent contact with the through holes, and an air inlet hole is provided at the bottom of the operating table (2) and is in communication with the second airbag (62); A wedge-shaped block 2 (716) is fixedly connected to the straight groove teeth (78), and is wedge-shapedly arranged on the push rod (64) and fits with one side of the push rod (64); A stop bar (8) is fixedly connected between the two mounting plates (3), and the top and bottom of the stop bar (8) are in contact with the outer walls of the baffle plate (61) and the guide rod (73) respectively.

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