Spring conveying and blowing type hot cutting device used on bag making machine

Abstract

The utility model relates to the field of bag making machine devices, in particular to a spring conveying blowing type hot cutting device used on a bag making machine, which comprises a rack, a hot cutting transmission shaft is arranged on the rack, the hot cutting transmission shaft is driven by a main motor to rotate, and hot cutting cams are further arranged on two sides of the hot cutting transmission shaft. Hot cutting sliding rods connected with the rack in a sliding mode are further arranged on the two sides of the rack, a hot cutting frame is arranged between the two hot cutting sliding rods, a hot cutter is fixed to the bottom of the hot cutting frame, the hot cutting cam is connected with the hot cutting sliding rod at the corresponding position through a hot cutting pull rod, and a cutter holder roller is further arranged on the portion, below the hot cutter, of the rack. A driving shaft is further arranged on the rack, the driving shaft is driven by a conveying motor to rotate, a lower rubber roller is fixed on the driving shaft, and a driven shaft is further arranged on the rack above the driving shaft. The diameters of the positioning roller and the limiting roller are small, the distance between the positioning roller and the hot cutter and the distance between the limiting roller and the hot cutter are small, displacement of the packaging bag can be avoided, and the cutting quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of bag making machine devices, in particular to a spring conveying air blowing type hot cutting device used on the bag making machine. Background Art

[0002] A bag making machine is a machine for making various plastic packaging bags or other material packaging bags. Its processing range is packaging bags of various sizes, thicknesses and specifications of plastics or other materials. Generally speaking, plastic packaging bags are the main products. Patent application number: CN201820620238.8 discloses a plastic bag gluing and hot cutting bag making machine, which has a frame, and a feeding roller is rotatably installed on the frame. It is characterized in that a plastic material folded into a double layer is wound on the feeding roller, and the plastic material is sequentially transmitted through the gluing device, hot cutting device and pressure feeding device installed on the frame. The gluing device is aligned with the gluing part of the plastic material. The input end of the hot cutting device is provided with upper and lower pressure rollers in rotational contact. The lower pressure roller is connected to the servo motor. The hot cutting device includes a hot cutting knife that can move up and down and a silicone roller below it, and the silicone roller is rotatably installed on the frame. When this type of bag making machine is hot cutting, the upper and lower pressure rollers are driven by a motor to rotate and convey the packaging bags to the hot cutting device position for hot cutting. However, due to the large diameters of the upper and lower pressure rollers, there is a large distance between the contact position between the upper and lower pressure rollers and the packaging bag and the position of the hot cutting knife. After the hot cutting knife cuts the packaging bag, the packaging bag at the upper and lower pressure rollers reaching the hot cutting knife position has no support, which easily causes the packaging bag at this position to overlap and wrinkle, and the packaging bag of a certain length cannot be accurately conveyed to the bottom of the hot cutting knife for the next hot cutting, which seriously affects the quality and production efficiency of the packaging bag.

[0003] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned disadvantages of the prior art and to provide a spring conveying air blowing hot cutting device used on a bag making machine.

[0005] The present invention can be implemented by the following technical solutions:

[0006] The present invention discloses a spring conveying air-blowing hot-cutting device used on a bag-making machine, comprising a frame, a hot-cutting transmission shaft is arranged on the frame, the hot-cutting transmission shaft is driven to rotate by a main motor, hot-cutting cams are arranged on both sides of the hot-cutting transmission shaft, hot-cutting slide bars slidably connected with the frame are arranged on both sides of the frame, a hot-cutting frame is arranged between the two hot-cutting slide bars, a hot-cutting knife is fixed on the bottom of the hot-cutting frame, the hot-cutting cam is connected to the hot-cutting slide bars at corresponding positions through hot-cutting pull bars, a knife seat roller is arranged on the frame below the hot-cutting knife, a driving shaft is arranged on the frame, and the driving shaft is driven to rotate by a conveying motor. A lower rubber roller is fixed on the driving shaft, a driven shaft is also provided on the frame above the driving shaft, an upper rubber roller is fixed on the driven shaft, a positioning shaft rotatably connected to the frame is also provided on the frame, the positioning shaft is driven to rotate by a main motor, support plates are symmetrically fixed on both sides of the positioning shaft, a limiting roller is provided between the two support plates, the limiting roller is wound around the upper rubber roller through a plurality of rubber roller springs, a positioning roller is also provided on the frame below the limiting roller, the positioning roller is wound around the lower rubber roller through a plurality of rubber roller springs, a plurality of air pipes are also fixed on the frames on both sides of the hot cutting knife, and a plurality of air holes are evenly provided on the air pipes.The hot cutting transmission shaft is driven to rotate by the main motor, and the hot cutting cams on both sides of the hot cutting transmission shaft drive the hot cutting slide bar to move up and down through the hot cutting pull rod, the hot cutting frame moves up and down with the hot cutting slide bar, and the hot cutting knife moves up and down with the hot cutting frame, and the packaging bag is hot cut by the cooperation of the hot cutting knife and the knife seat roller, and the packaging bag to be hot cut passes through between the upper rubber roller and the lower rubber roller, and the upper rubber roller and the lower rubber roller are driven to rotate by the conveying motor. When the upper rubber roller and the lower rubber roller rotate, the packaging bag is driven to move forward, and multiple rubber roller springs are wound between the upper rubber roller and the limiting roller, and multiple rubber roller springs are also wound between the lower rubber roller and the positioning roller, and when the upper rubber roller rotates, the rubber roller spring rotates with the upper rubber roller, and the limiting roller is realized by the action force between the rubber roller spring and the limiting roller. The packaging bag passes through between the upper rubber roller and the lower rubber roller and then passes out from between the limiting roller and the positioning roller, and the packaging bag is driven forward by the rubber roller springs on the upper and lower sides of the packaging bag. When the packaging bag needs to be hot cut, the rocker arm rotates with the hot The cutting transmission shaft swings, and the roller at the end of the rocker arm contacts the push rod and pushes the push rod to rotate around the positioning shaft. The positioning shaft rotates with the push rod, and the limiting roller rotates with the positioning shaft. After the limiting roller is separated from the positioning roller, compressed gas is ejected through the air hole on the air pipe to flatten the packaging bag. After the packaging bag is flattened, the hot cutting knife and the packaging bag act to hot cut the packaging bag. This device can realize hot cutting of the packaging bag, and positioning rollers and limiting rollers are respectively arranged on one side of the upper rubber roller and the lower rubber roller. The upper rubber roller and the limiting roller are wound around the rubber roller spring, and the lower rubber roller and the positioning roller are also wound around the rubber roller spring. The packaging bag is transported to a position close to the hot cutting knife by the rotation of the rubber roller springs on both sides of the packaging bag, which can effectively avoid the overlapping of the packaging bags, and the positioning roller and the limiting roller have small diameters, and the distances between the positioning roller and the limiting roller and the hot cutting knife are small, which can avoid the displacement of the packaging bag and ensure the quality of cutting. When the packaging bag is hot cut, the packaging bag is flattened by pulling the packaging bag by the airflow, further ensuring the quality of hot cutting.

[0007] Preferably, a cylinder is fixed on the hot cutting slide bar, a hot cutting push plate is arranged above the hot cutting frame, the piston rod end of the cylinder is fixed to the hot cutting push plate, a plurality of positioning rods are fixed on the hot cutting frame, the positioning rods pass through the hot cutting push plate and are slidably connected to the hot cutting push plate, a limiting block is fixed on the positioning rod above the hot cutting push plate, and a plurality of hot cutting springs are fixed between the hot cutting push plate and the hot cutting frame. During hot cutting, the hot cutting slide bar drives the cylinder to move up and down, the cylinder drives the hot cutting push plate to move up and down, and the hot cutting push plate drives the hot cutting knife to move up and down, so as to realize hot cutting of the packaging bag. When maintenance is required, the cylinder is started, the piston rod on the cylinder is extended, the hot cutting push plate rises, and the hot cutting push plate drives the hot cutting knife to rise, thereby increasing the distance between the hot cutting knife and the knife holder roller, and facilitating the maintenance of the hot cutting knife.

[0008] Preferably, a driving gear is fixed on the driving shaft, a driven gear is fixed on the knife seat roller at a position corresponding to the driving gear, and the driven gear is connected to the driving gear via a synchronous belt. The knife seat roller rotates with the lower rubber roller to avoid heat accumulation on the knife seat roller and prevent the packaging bag from adhering to the knife seat roller.

[0009] Preferably, the upper rubber roller and the lower rubber roller are both provided with a plurality of mounting grooves, and the rubber roller spring passes through the mounting grooves at corresponding positions, and the rubber roller spring is limited by the mounting grooves to prevent the rubber roller spring from moving.

[0010] Preferably, the frame is also provided with a platen transmission shaft, a conveying push plate is fixed on the platen transmission shaft, a platen cam is also provided on the hot-cut transmission shaft, the platen cam is connected to the conveying push plate through a connecting plate, a rocker is also fixed on the connecting plate, a push rod is also fixed on the positioning shaft, and a roller used in conjunction with the push rod is fixed at the end of the rocker. By setting the platen transmission shaft, when the hot-cut transmission shaft rotates, the platen transmission shaft rotates together, so that the rocker can swing, and when the rocker swings to a certain position, the conveying motor stops, and the roller contacts the push rod to drive the positioning shaft to rotate, so as to separate the limiting roller from the positioning roller.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. The device can realize hot cutting of packaging bags, and a positioning roller and a limiting roller are respectively arranged on one side of the upper rubber roller and the lower rubber roller. The upper rubber roller and the limiting roller are wound around the rubber roller spring, and the lower rubber roller and the positioning roller are also wound around the rubber roller spring. The packaging bag is transported to a position close to the hot cutting knife by rotating the rubber roller springs on both sides of the packaging bag, which can effectively avoid the packaging bag from overlapping. In addition, the positioning roller and the limiting roller have small diameters, and the distance between the positioning roller and the limiting roller and the hot cutting knife is small, which can avoid the displacement of the packaging bag and ensure the quality of cutting.

[0013] 2. When the packaging bag is hot cut, the airflow pulls the packaging bag to flatten it, further ensuring the quality of hot cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is another structural schematic diagram of the present invention from another angle;

[0017] Figure 3 This is a third perspective structural schematic diagram of the present invention;

[0018] Figure 4 for Figure 2Enlarged view of point A in the middle;

[0019] Figure 5 It is a structural schematic diagram of the rubber roller spring position;

[0020] In the figure: 1, frame; 2, main motor; 3, hot cutting transmission shaft; 4, hot cutting cam; 5, hot cutting pull rod; 6, hot cutting slide rod; 7, hot cutting frame; 8, hot cutting knife; 9, cylinder; 10, hot cutting push plate; 11, positioning rod; 12, knife seat roller; 13, pressure plate transmission shaft; 14, pressure plate cam; 15, conveying push plate; 16, connecting plate; 17, rocker arm; 18, roller; 19, push rod; 20, conveying motor; 21, driving shaft; 22, driven shaft; 23, lower rubber roller; 24, upper rubber roller; 25, installation groove; 26, rubber roller spring; 27, positioning roller; 28, support plate; 29, limit roller; 30, limit block; 31, driving gear; 32, synchronous belt; 33, driven gear; 34, air pipe; 35, air hole; 36, hot cutting spring; 37, positioning shaft; DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0022] Embodiment 1:

[0023] like Figures 1 to 5As shown, this embodiment discloses a spring conveying air-blowing hot cutting device used on a bag making machine, comprising a frame 1, a hot cutting transmission shaft 3 is arranged on the frame 1, the hot cutting transmission shaft 3 is driven to rotate by a main motor 2, hot cutting cams 4 are arranged on both sides of the hot cutting transmission shaft 3, hot cutting slide bars 6 slidably connected to the frame 1 are arranged on both sides of the frame 1, a hot cutting frame 7 is arranged between the two hot cutting slide bars 6, a hot cutting knife 8 is fixed to the bottom of the hot cutting frame 7, the hot cutting cam 4 is connected to the hot cutting slide bars 6 at corresponding positions through a hot cutting pull rod 5, a knife seat roller 12 is arranged on the frame 1 below the hot cutting knife 8, and a driving shaft 21 is also arranged on the frame 1, the driving shaft 21 is driven to rotate by a conveying motor 20, and a A lower rubber roller 23 and a driven shaft 22 are also provided on the frame 1 above the driving shaft 21, and an upper rubber roller 24 is fixed on the driven shaft 22. A positioning shaft 37 rotatably connected to the frame 1 is also provided on the frame 1, and the positioning shaft 37 is driven to rotate by the main motor 2. Support plates 28 are symmetrically fixed on both sides of the positioning shaft 37, and a limiting roller 29 is provided between the two supporting plates 28. The limiting roller 29 is wound around the upper rubber roller 24 through a plurality of rubber roller springs 26. A positioning roller 27 is also provided on the frame 1 below the limiting roller 29, and the positioning roller 27 is wound around the lower rubber roller 23 through a plurality of rubber roller springs 26. A plurality of air pipes 34 are also fixed on the frame 1 on both sides of the hot cutting knife 8, and a plurality of air holes 35 are evenly arranged on the air pipe 34.The hot cutting transmission shaft 3 is driven to rotate by the main motor 2, and the hot cutting cams 4 on both sides of the hot cutting transmission shaft 3 drive the hot cutting slide bar 6 to move up and down through the hot cutting pull rod 5, and the hot cutting frame 7 moves up and down with the hot cutting slide bar 6, and the hot cutting knife 8 moves up and down with the hot cutting frame 7. The packaging bag is hot cut by the hot cutting knife 8 and the knife seat roller 12, and the packaging bag to be hot cut passes between the upper glue roller 24 and the lower glue roller 23, and the upper glue roller 24 and the lower glue roller 23 are driven to rotate by the conveying motor 20. When the upper glue roller 24 and the lower glue roller 23 rotate, the packaging bag is driven to move forward, and the upper glue roller 24 and the limit roller 12 are pressed against the upper glue roller 24 and the limit roller 12. A plurality of rubber roller springs 26 are wound between the rollers 29, and a plurality of rubber roller springs 26 are also wound between the lower rubber roller 23 and the positioning roller 27. When the upper rubber roller 24 rotates, the rubber roller springs 26 rotate with the upper rubber roller 24. The limiting roller 29 is pressed against the positioning roller 27 by the action between the rubber roller springs 26 and the limiting roller 29. The packaging bag passes through between the upper rubber roller 24 and the lower rubber roller 23 and then passes out from between the limiting roller 29 and the positioning roller 27. The packaging bag is driven forward by the rubber roller springs 26 on the upper and lower sides of the packaging bag. When the packaging bag needs to be hot-cut, the rocker arm 1 7 swings with the hot cutting transmission shaft 3, and the roller 18 at the end of the rocker arm 17 contacts the push rod 19 and pushes the push rod 19 to rotate around the positioning shaft 37. The positioning shaft 37 rotates with the push rod 19, and the limiting roller 29 rotates with the positioning shaft 37. After the limiting roller 29 is separated from the positioning roller 27, the compressed gas is ejected through the air hole 35 on the air pipe 34 to flatten the packaging bag. After the packaging bag is flattened, the hot cutting knife 8 acts on the packaging bag to hot cut the packaging bag. The device can realize hot cutting of the packaging bag, and the positioning roller 27 and the limiting roller 29 are respectively arranged on one side of the upper rubber roller 24 and the lower rubber roller 23. 9. The upper rubber roller 24 and the limiting roller 29 are wound around the rubber roller spring 26, and the lower rubber roller 23 and the positioning roller 27 are also wound around the rubber roller spring 26. The rubber roller springs 26 on both sides of the packaging bag rotate to transport the packaging bag to a position close to the hot cutting knife 8, which can effectively avoid the packaging bag from overlapping. In addition, the positioning roller 27 and the limiting roller 29 have small diameters, and the distance between the positioning roller 27 and the limiting roller 29 and the hot cutting knife 8 is small, which can avoid the packaging bag from shifting and ensure the cutting quality. When the packaging bag is hot-cut, the packaging bag is pulled flat by the airflow to further ensure the hot cutting quality.

[0024] Among them, the hot cutting slide bar 6 is fixed with a cylinder 9, a hot cutting push plate 10 is arranged above the hot cutting frame 7, the piston rod end of the cylinder 9 is fixed with the hot cutting push plate 10, and a plurality of positioning rods 11 are fixed on the hot cutting frame 7, the positioning rods 11 pass through the hot cutting push plate 10 and are slidably connected with the hot cutting push plate 10, and the positioning rods 11 above the hot cutting push plate 10 are fixed with a limit block 30, and a plurality of hot cutting springs 36 are fixed between the hot cutting push plate 10 and the hot cutting frame 7. During hot cutting, the hot cutting slide bar 6 drives the cylinder 9 to move up and down, the cylinder 9 drives the hot cutting push plate 10 to move up and down, and the hot cutting push plate 10 drives the hot cutting knife 8 to move up and down, so as to realize the hot cutting of the packaging bag. When maintenance is needed, the cylinder 9 is started, the piston rod on the cylinder 9 is extended, the hot cutting push plate 10 rises, and the hot cutting push plate 10 drives the hot cutting knife 8 to rise, so as to increase the distance between the hot cutting knife 8 and the knife seat roller 12, so as to facilitate the maintenance of the hot cutting knife 8.

[0025] Among them, a driving gear 31 is fixed on the driving shaft 21, and a driven gear 33 is fixed on the knife seat roller 12 at a position corresponding to the driving gear 31, and the driven gear 33 is connected to the driving gear 31 through a synchronous belt 32. The knife seat roller 12 rotates with the lower rubber roller 23, which can prevent heat accumulation on the knife seat roller 12 and prevent the packaging bag from adhering to the knife seat roller 12.

[0026] Among them, the frame 1 is also provided with a platen transmission shaft 13, a conveying push plate 15 is fixed on the platen transmission shaft 13, and a platen cam 14 is also provided on the hot-cut transmission shaft 3, the platen cam 14 is connected to the conveying push plate 15 through a connecting plate 16, a rocker arm 17 is also fixed on the connecting plate 16, a push rod 19 is also fixed on the positioning shaft 37, and a roller 18 used in conjunction with the push rod 19 is fixed at the end of the rocker arm 17. When the hot-cut transmission shaft 3 rotates by setting the platen transmission shaft 13, the platen transmission shaft 13 rotates together, and the rocker arm 17 can be swung. After the rocker arm 17 swings to a certain position, the conveying motor 20 stops, and the roller 18 contacts the push rod 19 to push the positioning shaft 37 to rotate, so as to separate the limiting roller 29 from the positioning roller 27.

[0027] Embodiment 2:

[0028] This embodiment discloses a spring conveying air blowing hot cutting device used in a bag making machine. Based on the structure and principle of the first embodiment, the upper rubber roller 24 and the lower rubber roller 23 of this embodiment are both provided with a plurality of mounting grooves 25, and the rubber roller spring 26 passes through the mounting grooves 25 at corresponding positions. The mounting grooves 25 limit the rubber roller spring 26 to prevent the rubber roller spring 26 from moving.

[0029] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be regarded as the scope of protection of the present invention.

Claims

1. A spring conveying air blowing hot cutting device used on a bag making machine, comprising a frame, characterized in that: The frame is provided with a hot cutting transmission shaft, which is driven to rotate by a main motor, and hot cutting cams are also provided on both sides of the hot cutting transmission shaft, and hot cutting slide bars slidably connected to the frame are also provided on both sides of the frame, and a hot cutting frame is provided between the two hot cutting slide bars, and a hot cutting knife is fixed to the bottom of the hot cutting frame, and the hot cutting cam is connected to the hot cutting slide bar at a corresponding position through a hot cutting pull rod, and a knife seat roller is also provided on the frame below the hot cutting knife, and a driving shaft is also provided on the frame, and the driving shaft is driven to rotate by a conveying motor, and a lower A rubber roller, a driven shaft is also provided on the frame above the driving shaft, an upper rubber roller is fixed on the driven shaft, a positioning shaft rotatably connected to the frame is also provided on the frame, support plates are symmetrically fixed on both sides of the positioning shaft, a limiting roller is provided between the two support plates, the limiting roller is wound around the upper rubber roller through a plurality of rubber roller springs, a positioning roller is also provided on the frame below the limiting roller, the positioning roller is wound around the lower rubber roller through a plurality of rubber roller springs, a plurality of air pipes are fixed on the frames on both sides of the hot cutting knife, and a plurality of air holes are evenly provided on the air pipes.

2. The spring conveying air blowing hot cutting device used on the bag making machine according to claim 1, characterized in that: A cylinder is fixed on the hot cutting slide rod, a hot cutting push plate is arranged above the hot cutting frame, the piston rod ends of the cylinders are fixed to the hot cutting push plate, a plurality of positioning rods are fixed on the hot cutting frame, the positioning rods pass through the hot cutting push plate and are slidably connected to the hot cutting push plate, a limiting block is fixed on the positioning rods above the hot cutting push plate, and a plurality of hot cutting springs are fixed between the hot cutting push plate and the hot cutting frame.

3. The spring conveying air blowing hot cutting device used on the bag making machine according to claim 1, characterized in that: A driving gear is fixed on the driving shaft, a driven gear is fixed on the knife base roller at a position corresponding to the driving gear, and the driven gear is connected to the driving gear through a synchronous belt.

4. The spring conveying air blowing hot cutting device used on the bag making machine according to claim 1, characterized in that: The upper rubber roller and the lower rubber roller are both provided with a plurality of mounting grooves, and the rubber roller spring passes through the mounting grooves at corresponding positions.

5. The spring conveying air blowing hot cutting device used on the bag making machine according to claim 1, characterized in that: The frame is also provided with a pressure plate transmission shaft, a conveying push plate is fixed on the pressure plate transmission shaft, a pressure plate cam is also provided on the hot cutting transmission shaft, the pressure plate cam is connected to the conveying push plate through a connecting plate, a rocker arm is also fixed on the connecting plate, a push rod is also fixed on the positioning shaft, and a roller used in conjunction with the push rod is fixed at the end of the rocker arm.

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