Hot cutting device of bag making machine

Abstract

The utility model discloses a hot cutting device of a bag making machine, which belongs to the technical field of bag making equipment and comprises a bottom plate, two groups of fixing frames, two groups of frame bodies, two groups of mounting frames and a group of supports are fixedly mounted at the top of the bottom plate, and connecting rollers are rotatably mounted on the sides, close to each other, of the two groups of fixing frames. Tensioning assemblies are arranged in the two sets of frames, the problems of hot cutting position deviation, incomplete sealing and the like caused by improper tensioning of packaging bags are solved, waste products are reduced, the production cost is saved, the problems of hot cutting position deviation, incomplete sealing and the like caused by improper tensioning of the packaging bags are solved, waste products are reduced, the production cost is saved, and the production efficiency is improved. The cutting action can be rapidly and continuously completed through reciprocating continuous cutting, the bag making time is greatly shortened, and therefore the overall production efficiency is remarkably improved, the stable reciprocating motion mode can enable the cutting position and length of each time to be more accurate and consistent, cutting errors are reduced, and it is guaranteed that the size specification of packaging bags is uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of bag making equipment, in particular to a hot cutting device of a bag making machine. Background Art

[0002] Plastic bags are bags made of plastic (commonly used plastics include polypropylene, polyester, nylon, etc.) as the main raw material. They are indispensable items in people's daily lives and are often used to hold other items. Therefore, the production of plastic bags is extremely common. When producing plastic bags, the material strips need to be hot-cut, so there is a certain demand for hot-cutting devices in bag-making machines. The existing hot-cutting devices of bag-making machines have some disadvantages. They cannot adjust the tension of plastic packaging bags during transportation, and may cause problems such as hot-cutting position offset and incomplete sealing due to improper tensioning, which reduces the generation of waste products. Moreover, they cannot effectively and continuously cut the packaging bags back and forth, and cannot make the position and length of each cut more accurate and consistent, reduce cutting errors, and ensure the uniformity of the size specifications of the packaging bags. Moreover, they greatly increase the time for bag making and reduce work efficiency. Therefore, we propose a hot-cutting device for bag-making machines to solve this problem. Utility Model Content

[0003] The purpose of the utility model is to provide a hot cutting device for a bag making machine to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The cam is provided with a plurality of support members, each of which is provided with a plurality of support members, and the support members are provided with a plurality of support members.

[0006] Preferably, a frame is fixedly installed on the top of the base plate, and transmission wheels are rotatably installed on the inner walls of both sides of the frame. Conveyor belts are transmission-installed on the outer sides of two groups of transmission wheels. Motor 1 is fixedly installed on one side of the frame, and the output shaft of motor 1 is fixedly connected to the transmission wheel located on the right side.

[0007] Preferably, the eccentric wheel is rotatably mounted on one side of the bracket, and motor three is fixedly mounted on the other side of the bracket, the output shaft of motor three is fixedly connected to the eccentric wheel, a motor frame is fixedly mounted on one side of the mounting frame located on the front side, motor two is fixedly mounted on one side of the motor frame, the output shaft of motor two is fixedly connected to the rotating shaft located on the front side of the bottom, the screw rod is rotatably mounted on the inner walls on both sides of the frame located on the front side, and motor four is fixedly mounted on the top of the frame located on the front side, and the output shaft of motor four is fixedly connected to the screw rod.

[0008] Preferably, two groups of limit blocks are fixedly mounted on one side of the bracket, and the two groups of limit blocks are slidably mounted inside the two sides of the connecting rod respectively.

[0009] Preferably, limiting rods are fixedly installed on the inner walls of both sides of the frame body located at the rear side, a slider is slidably installed on the outer side of the limiting rod, and the tensioning roller is rotatably connected to the slider.

[0010] Preferably, four groups of short plates are fixedly installed on the top of the cutting table, and conveying rollers are rotatably installed inside the two groups of short plates located on the same side.

[0011] The utility model discloses a kind of hot cutting device of bag making machine, by being provided with tensioning assembly, gear, tensioning roller, conveying roller and rotating shaft, through driving motor four, so that motor four drives screw rod to rotate, so that screw rod drives thread block to move up and down, so that thread block drives tensioning roller on one side to move up and down, so as to adjust the tension degree when packaging bag is driven and cut, through meshing of two sets of gears, two sets of rotating shaft drive tensioning roller to flatten and convey film, avoid the problems such as hot cutting position deviation and incomplete sealing caused by improper tensioning of packaging bag, reduce the generation of waste products, save production cost, avoid the problems such as hot cutting position deviation and incomplete sealing caused by improper tensioning of packaging bag, reduce the generation of waste products, save production cost, and flattening and conveying can ensure the surface of packaging bag is flat during hot cutting, make the sealing place heated evenly, make the sealing more firm and tight, reduce the risk of sealing defect and leakage;

[0012] In the utility model, a hot cutting device of a bag making machine is provided with a cutting assembly, a bracket, a transmission wheel and a conveyor belt. By driving motor three, the motor three drives the eccentric wheel to rotate. Through a connecting rod hinged on one side of the eccentric wheel and a connecting rod hinged on one end of the connecting rod, the connecting rod drives the hot cutting knife at the bottom to reciprocate and continuously cut the made packaging bags. By driving motor one, the motor one drives the transmission wheel on the right side to rotate, so that the conveyor belt drives the packaging bags cut on the top to be transported, unloaded and collected. The reciprocating continuous cutting can complete the cutting action quickly and continuously, greatly shortening the bag making time, thereby significantly improving the overall production efficiency. The stable reciprocating motion mode can make the position and length of each cutting more accurate and consistent, reduce cutting errors, ensure the uniform size specifications of the packaging bags, and transport the cut packaging bags in time, effectively avoiding accumulation in the cutting area, ensuring that the cutting work can be carried out continuously without interrupting the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a hot cutting device of a bag making machine proposed by the utility model;

[0014] Figure 2 This is a cross-sectional structural schematic diagram of a hot cutting device of a bag making machine proposed by the utility model;

[0015] Figure 3 This is a schematic diagram of the cutting assembly structure proposed by the utility model;

[0016] Figure 4 This is a schematic diagram of the tensioning assembly structure proposed by the utility model.

[0017] In the figure: 1. bottom plate; 2. frame; 3. transmission wheel; 4. conveyor belt; 5. cutting table; 6. bracket; 7. cutting assembly; 701. eccentric wheel; 702. connecting rod; 703. connecting rod; 704. limit block; 705. hot cutter; 8. frame; 9. tensioning assembly; 901. motor four; 902. screw rod; 903. threaded block; 904. slider; 905. limit rod; 10. tensioning roller; 11. gear; 12. conveyor roller; 13. motor one; 14. motor two; 15. motor three; 16. conveyor roller. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figures 1-4A hot cutting device for a bag making machine comprises: a bottom plate 1, two sets of fixing frames, two sets of frames 8, two sets of mounting frames and a set of brackets 6 are fixedly installed on the top of the bottom plate 1, a connecting roller is rotatably installed on one side of the two sets of fixing frames close to each other, a tensioning assembly 9 is arranged inside the two sets of frames 2, and the tensioning assembly 9 comprises: a screw rod 902, a threaded block 903 is threadedly connected to the outer side of the screw rod 902, a tensioning roller 10 is rotatably installed on one side of the threaded block 903, two sets of rotating shafts are rotatably installed inside the two sets of mounting frames, and two sets of rotating shafts are rotatably installed inside the two sets of mounting frames. A conveying roller 12 is fixedly installed on the outer side of each group of rotating shafts, a gear 11 is fixedly installed on the outer side of one end of each group of rotating shafts, and the two groups of gears 11 are meshed with each other. A cutting assembly 7 is arranged on one side of the bracket 6, and the cutting assembly 7 includes: an eccentric wheel 701, a connecting rod 702 is hinged on one side of the eccentric wheel 701, a connecting rod 703 is hinged on one end of the connecting rod 702, a hot cutting knife 705 is fixedly installed on the bottom of the connecting rod 703, a cutting table 5 is arranged on the bottom of the hot cutting knife 705, and the cutting table 5 is fixedly connected to the bottom plate 1.

[0020] In this embodiment, a frame 2 is fixedly installed on the top of the bottom plate 1, and transmission wheels 3 are rotatably installed on the inner walls of both sides of the frame 2. Conveyor belts 4 are rotatably installed on the outer sides of the two sets of transmission wheels 3. A motor 13 is fixedly installed on one side of the frame 2, and the output shaft of the motor 13 is fixedly connected to the transmission wheel 3 on the right side, which is convenient for the rotation of the transmission wheel 3 and the conveyor belt 4 to transport the cut plastic packaging bags. The eccentric wheel 701 is rotatably installed on one side of the bracket 6, and a motor 3 15 is fixedly installed on the other side of the bracket 6. The output shaft of the motor 3 15 is connected to the eccentric wheel 70 1 is fixedly connected, a motor frame is fixedly installed on one side of the mounting frame located on the front side, a motor 2 14 is fixedly installed on one side of the motor frame, the output shaft of the motor 2 14 is fixedly connected to the rotating shaft located on the front side of the bottom, the screw rod 902 is rotatably installed on the inner walls of both sides of the frame body 8 located on the front side, a motor 4 901 is fixedly installed on the top of the frame 2 located on the front side, and the output shaft of the motor 4 901 is fixedly connected to the screw rod 902, which is convenient for the rotation of the eccentric wheel 701, the screw rod 902 and the rotating shaft, and is convenient for the effective reciprocating cutting, tension adjustment and flattening of the plastic packaging bag.

[0021] In this embodiment, two groups of limit blocks 704 are fixedly installed on one side of the bracket 6, and the two groups of limit blocks 704 are respectively slidably installed on the inside of the two sides of the connecting rod 703, so that the connecting rod 703 can drive the hot cutting knife 705 to perform stable reciprocating cutting. Limit rods 905 are fixedly installed on the inner walls of both sides of the frame 8 on the rear side, and sliders 904 are slidably installed on the outer sides of the limit rods 905. The tensioning roller 10 is rotatably connected to the slider 904 to prevent the tensioning roller 10 from rotating when moving. Four groups of short plates are fixedly installed on the top of the cutting table 5, and conveying rollers 16 are rotatably installed inside the two groups of short plates on the same side, so as to facilitate the conveying of the cut plastic packaging bags to the conveyor belt 4.

[0022] In this embodiment, during use, the plastic packaging bag passes through the bottom of the connecting roller, the top of the tension roller 10, the inside of the two groups of conveyor rollers 12, and the bottom of the two groups of conveying rollers 16 in sequence. At this time, through the driving motor four 901, the motor four 901 drives the lead screw 902 to rotate, so that the lead screw 902 drives the threaded block 903 to move up and down, and the threaded block 903 drives the tension roller 10 on one side to move up and down to facilitate adjusting the tension during the transmission and cutting of the packaging bag. At this time, through the driving motor two 14, the motor two 14 drives the rotating shaft at the bottom to rotate. Through the meshing of the two groups of gears 11, the two groups of rotating shafts drive the tension roller 10 to flatten and convey the packaging bag. At this time, through the driving motor three 15, the motor three 15 drives the eccentric wheel 701 to rotate. Through the connecting rod 702 hinged to one side of the eccentric wheel 701 and the connecting rod 703 hinged to one end of the connecting rod 702, the connecting rod 703 drives the hot cutting knife 705 at the bottom to continuously cut the packaging bag reciprocally. Then, by rotating the conveying roller 16 at the rear, the cut packaging bag is conveyed to the top of the conveyor belt 4. At this time, through the driving motor one 13, the motor one 13 drives the driving wheel 3 on the right side to rotate, so that the conveyor belt 4 drives the cut packaging bag at the top for transportation, blanking, and collection.

[0023] The above has introduced in detail a hot cutting device of a bag making machine provided by the present utility model. Specific embodiments are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A hot cutting device for a bag making machine, characterized in that: Including: A bottom plate (1), on the top of which are fixedly installed two groups of fixing frames, two groups of frames (8), two groups of mounting frames and a bracket (6). On the side of the two fixing frames close to each other, a connecting roller is rotatably installed. Inside the two frames (8), a tensioning assembly (9) is provided. The tensioning assembly (9) includes: a lead screw (902), on the outer side of which a threaded block (903) is threadedly connected. On one side of the threaded block (903), a tensioning roller (10) is rotatably installed. Inside the two mounting frames, two rotating shafts are rotatably installed. On the outer sides of the two rotating shafts, conveyor rollers (12) are fixedly installed. On the outer sides of one ends of the two rotating shafts, gears (11) are fixedly installed. The two gears (11) are meshed with each other. On one side of the bracket (6), a cutting assembly (7) is provided. The cutting assembly (7) includes: an eccentric wheel (701), on one side of which a connecting rod (702) is hinged. At one end of the connecting rod (702), a connecting rod (703) is hinged. At the bottom of the connecting rod (703), a hot cutting knife (705) is fixedly installed. At the bottom of the hot cutting knife (705), there is a cutting table (5), and the cutting table (5) is fixedly connected to the bottom plate (1).

2. The hot cutting device of a bag making machine according to claim 1, characterized in that: On the top of the bottom plate (1), a frame (2) is fixedly installed. On the inner walls of the two sides of the frame (2), driving wheels (3) are rotatably installed. On the outer sides of the two driving wheels (3), conveyor belts (4) are drivingly installed. On one side of the frame (2), a first motor (13) is fixedly installed. The output shaft of the first motor (13) is fixedly connected to the driving wheel (3) on the right side.

3. The hot cutting device of a bag making machine according to claim 2, characterized in that: The eccentric wheel (701) is rotatably installed on one side of the bracket (6). On the other side of the bracket (6), a third motor (15) is fixedly installed. The output shaft of the third motor (15) is fixedly connected to the eccentric wheel (701). On one side of the front mounting frame, a motor bracket is fixedly installed. On one side of the motor bracket, a second motor (14) is fixedly installed. The output shaft of the second motor (14) is fixedly connected to the rotating shaft at the front bottom. The lead screw (902) is rotatably installed on the inner walls of the two sides of the front frame (8). On the top of the front frame (2), a fourth motor (901) is fixedly installed. The output shaft of the fourth motor (901) is fixedly connected to the lead screw (902).

4. The hot cutting device of a bag making machine according to claim 1, characterized in that: On one side of the bracket (6), two limit blocks (704) are fixedly installed, and the two limit blocks (704) are respectively slidably installed inside the two sides of the connecting rod (703).

5. The hot cutting device of a bag making machine according to claim 1, characterized in that: On the inner walls of the two sides of the rear frame (8), limit rods (905) are fixedly installed. On the outer sides of the limit rods (905), sliders (904) are slidably installed. The tensioning roller (10) is rotatably connected to the slider (904).

6. The hot cutting device of a bag making machine according to claim 1, characterized in that: On the top of the cutting table (5), four short plates are fixedly installed. Inside the two short plates on the same side, conveying rollers (16) are rotatably installed.

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