Fly cutter and bag body opening mechanism of bag making machine comprising fly cutter

Abstract

The utility model relates to a fly cutter of a bag making machine and a bag body opening mechanism of the bag making machine. Comprising a cutter bar, a support rotationally connected with the cutter bar, a cutter rotationally arranged at one end of the cutter bar, a tilting mechanism which is arranged on the support, acts on the other end of the cutter bar and is used for tilting or laying down the cutter, and a pressure tightness adjusting mechanism which is arranged on one side of the cutter and is used for adjusting the pressing pressure of the cutter. By arranging the tilting mechanism and the pressure tightness adjusting mechanism, the cutter can be lifted up or put down, and meanwhile, the cutting pressure of the cutter can be adjusted through the pressure tightness adjusting mechanism so as to meet the cutting requirements of different materials and different thicknesses.

Description

Technical Field

[0001] The utility model relates to the technical field of bag making machines, and particularly relates to a flying knife and a bag body opening mechanism of a bag making machine including the flying knife. Background Art

[0002] With the development of the packaging industry, the demand for packaging bags is increasing day by day. As one of the important equipment for producing packaging bags, the bag making machine plays a crucial role in the production process. In the working process of the bag making machine, the flying knife is one of the key components for cutting and opening the bag body, and its working performance and working mode directly affect the production efficiency and product quality of the bag making machine.

[0003] The traditional flying knife structure of the bag making machine is mainly used for scoring the bag body, and mostly adopts a fixed cutting method, that is, the cutting tool always keeps in contact with the material during use. This method not only increases the wear rate of the tool, but also cannot meet the cutting requirements of materials with different materials and thicknesses, resulting in unsatisfactory cutting effects and even damaging the material itself.

[0004] In addition, the existing flying knife structures often lack effective control means and are difficult to accurately adjust the cutting pressure, which also affects the cutting quality and production efficiency. Therefore, it is particularly important to develop a flying knife structure that can lift the tool in the non-cutting state and can adjust the cutting pressure according to the material characteristics. Summary of the Utility Model

[0005] In view of the deficiencies in the background art, the utility model provides a flying knife and a bag body opening mechanism of a bag making machine including the flying knife.

[0006] The technical solution adopted by the utility model is: a flying knife, including a knife rod, a bracket rotatably connected to the knife rod, a cutter rotatably arranged at one end of the knife rod, a tilting mechanism arranged on the bracket and acting on the other end of the knife rod for tilting or lowering the cutter, and a pressure relaxation adjustment mechanism arranged on one side of the cutter for adjusting the downward pressure of the cutter.

[0007] The present application is further provided as: the cutter includes a cutter disc and a wheel knife body fixed on the cutter disc, and the cutter disc is rotatably connected to the knife rod through a knife shaft.

[0008] The present application is further provided as: the tilting mechanism includes a hand wheel and a tilting rod on the hand wheel, the hand wheel is rotatably connected to a hand wheel support plate on the bracket, and a lowering section is arranged below the hand wheel.

[0009] The present application is further provided as: the pressure relaxation adjustment mechanism includes a mounting plate fixed on the bracket, a screw rod threadedly connected to a screw hole on the mounting plate, a knob connected to the screw rod, and an elastic member arranged between the knife rod and the screw rod.

[0010] The present application also provides a flying knife, including a bag body opening mechanism of a bag making machine with the flying knife. The bag body opening mechanism includes an arched frame, a linear sliding module fixed on the arched frame, and a flying knife connected to the output end of the linear sliding module.

[0011] The bag body opening mechanism of the bag making machine is further arranged as follows: It further includes a cutter mounting plate and a cutter support plate. The cutter mounting plate is fixed on the output end of the linear sliding module. A positioning post is fixed on the cutter mounting plate, and the positioning post is exactly inserted into the positioning hole on the above-mentioned bracket. One end of the cutter support plate is fixedly connected to the cutter mounting plate, and the other end is fixedly connected to the bracket.

[0012] The bag body opening mechanism of the bag making machine is further arranged as follows: The cross-section of the positioning post is a polygonal structure.

[0013] The bag body opening mechanism of the bag making machine is further arranged as follows: It further includes a cutter support plate fixed on the arched frame, a mounting beam arranged below the cutter support plate, a gear shaft mounting seat fixed on the mounting beam, a gear shaft rotatably connected to the gear shaft mounting seat, a driving gear fixed on the gear shaft, an operating handwheel fixed on the end of the gear shaft, and a transmission rack meshing with the driving gear. The transmission rack is fixed on the side plates on both sides of the bag making machine.

[0014] The beneficial effects of the present utility model are as follows: By setting a pressure and tension adjustment mechanism, the downward pressure of the cutter can be flexibly adjusted according to different material thicknesses or hardnesses, ensuring the effectiveness of cutting different material thicknesses or hardnesses without damaging the material, improving the cutting quality and the qualified rate of products. In addition, by setting a tilting mechanism, the cutter can be automatically lifted in the non-cutting state to adapt to different working conditions of the bag making machine. For example, when the bag body does not need to be opened, the flying knife can be tilted to avoid scratching the bag body.

[0015] In addition to the purposes, features, and advantages described above, the present utility model has other purposes, features, and advantages.

[0016] Next, with reference to the accompanying drawings, the present utility model will be described in further detail. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the flying knife.

[0018] Figure 2 It is a schematic diagram of the use of the flying knife installed on the bag making machine.

[0019] Figure 3 It is Figure 2 The enlarged schematic diagram at position A in

[0020] Figure 4 It isFigure 2 Enlarged schematic view at position B in [device name].

[0021] Figures 1-4 In [device name]: 1. Tool shank; 2. Bracket; 3. Cutting tool; 4. Tool disc; 5. Main body of wheel cutter; 6. Tool shaft; 7. Handwheel; 8. Lever; 9. Lower cutting surface; 10. Mounting plate; 11. Screw hole; 12. Screw; 13. Knob; 14. Elastic member; 15. Handwheel support plate; 17. Arch-shaped frame; 18. Linear sliding module; 19. Cutting tool mounting plate; 20. Cutting tool support plate; 21. Positioning post; 23. Positioning hole; 24. Cutting tool support plate; 25. Mounting beam; 26. Gear shaft mounting seat; 27. Gear shaft; 28. Driving gear; 29. Operating handwheel; 30. Driving rack; 31. Side plate. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0024] The present invention provides a flying knife and a bag body opening mechanism of a bag-making machine including the flying knife.

[0025] In this embodiment, referring to Figures 1-4 , a flying knife includes a tool shank 1, a bracket 2 rotatably connected to the tool shank 1, a cutting tool 3 rotatably provided at one end of the tool shank, a lifting mechanism provided on the bracket and acting on the other end of the tool shank for lifting or lowering the cutting tool, and a pressure loosening and adjusting mechanism provided on one side of the cutting tool for adjusting the downward pressure of the cutting tool.

[0026] The flying knife in this embodiment includes a knife rod, a bracket rotatably connected to the knife rod, a cutter rotatably arranged at one end of the knife rod, a tilting mechanism arranged on the bracket and acting on the other end of the knife rod for tilting or lowering the cutter, and a pressure relaxation adjustment mechanism arranged on one side of the cutter for adjusting the downward pressure of the cutter. The knife rod is a long strip structure, used for installing the flying knife and rotatably connecting with the bracket. The tilting mechanism is installed on the bracket for tilting or lowering the cutter to make the cutter away from or close to the bag body. The pressure relaxation adjustment mechanism is used to adjust the downward pressure of the cutter to meet the cutting requirements of different materials.

[0027] By setting the tilting mechanism and the pressure relaxation adjustment mechanism, the cutter can be lifted or lowered. At the same time, through the pressure relaxation adjustment mechanism, the cutting pressure of the cutter can be adjusted to meet the cutting requirements of different materials and different thicknesses.

[0028] Specifically: The cutter includes a cutter disc 4 and a wheel knife body 5 fixed on the cutter disc. The cutter disc is rotatably connected to the knife rod through a knife shaft 6.

[0029] When the cutter works, it moves back and forth on the bag body driven by the linear sliding module to complete the opening work of the bag body. As shown Figure 1 The cutter disc is installed by a nut, which is convenient for disassembly and assembly and is convenient for replacing the cutter disc after wear.

[0030] Specifically: The tilting mechanism includes a handwheel 7 and a tilting rod 8 on the handwheel. The handwheel is rotatably connected to a handwheel support plate 15 on the bracket, and a lowering section plane 9 is arranged below the handwheel.

[0031] As Figure 1 shown, this is the working state when the cutter is lowered. The lowering section plane is flush with the surface of the knife rod and is mutually limited, which can prevent the handwheel from rotating and ensure the stability and reliability of the cutter during work. When the cutter needs to be lifted, by operating the tilting rod to rotate, the lowering section plane of the handwheel can be deviated from the surface of the knife rod, and the operation is convenient and simple.

[0032] Specifically: The pressure relaxation adjustment mechanism includes a mounting plate 10 fixed on the bracket, a screw rod 12 threadedly connected to a screw hole 11 on the mounting plate, a knob 13 connected to the screw rod, and an elastic member 14 arranged between the knife rod and the screw rod.

[0033] In the above embodiment, when the pressure relaxation adjustment mechanism is used, by rotating the knob, the position height of the screw rod can be adjusted, thereby changing the compression degree of the elastic member and realizing the adjustment of the downward pressure of the cutter to meet different cutting requirements.

[0034] The present application also provides a bag body opening mechanism of a bag making machine including the flying knife, which includes an arched frame 17, a linear sliding module 18 fixed on the arched frame, and a flying knife connected to the output end of the linear sliding module.

[0035] By integrating the flying knife into the bag body opening mechanism, the bag body opening mechanism of the bag making machine can have the ability to adjust the cutting pressure without adding any structure. At the same time, when the opening mechanism is not required to work, the cutting knife of the flying knife is lifted to meet different processing requirements.

[0036] Specifically: The bag body opening mechanism of the bag making machine further includes a cutting knife mounting plate 19 and a cutting knife support plate 20. The cutting knife mounting plate is fixed on the output end of the linear sliding module. A positioning column 21 is fixed on the cutting knife mounting plate, and the positioning column is exactly inserted into the positioning hole 23 on the above-mentioned bracket. One end of the cutting knife support plate is fixedly connected to the cutting knife mounting plate, and the other end is fixedly connected to the bracket.

[0037] In this embodiment, the flying knife is fixedly installed on the output end of the linear sliding module through the cutting knife mounting plate and the cutting knife support plate. Among them, the positioning column is adapted to the positioning hole to ensure the accuracy of the cutting knife position.

[0038] Specifically: The cross section of the positioning column is a polygonal structure.

[0039] In this embodiment, the positioning column can adopt a polygonal structure, such as a positioning column with a square, rectangular or triangular cross section, etc. It mainly plays a role of limiting and positioning to ensure the accuracy of the cutting knife installation.

[0040] Specifically: It further includes a cutting knife supporting plate 24 fixed on the arched frame, a mounting beam 25 arranged below the cutting knife supporting plate, a gear shaft mounting seat 26 fixed on the mounting beam, a gear shaft 27 rotatably connected to the gear shaft mounting seat, a driving gear 28 fixed on the gear shaft, an operating handwheel 29 fixed on the end of the gear shaft, and a transmission rack 30 meshing with the driving gear. The transmission rack is fixed on the side plates 31 on both sides of the bag making machine.

[0041] In this embodiment, when in use, the bag body passes between the cutting knife supporting plate and the cutting knife. Driven by the linear sliding module, the cutting knife drives the bag body to perform the opening operation. Among them, by setting the transmission rack and the driving gear, the position of the bag body opening mechanism of the bag making machine can be adjusted back and forth along the side plate of the bag making machine by rotating the operating gear.

[0042] All technicians should note that although the present invention has been described according to the above specific embodiments, the idea of the present invention is not limited to this invention only. Any modification using the idea of the present invention will be included in the scope of protection of this patent right.

Claims

1. A flying knife, characterized in that: The invention comprises a knife bar, a bracket rotatably connected to the knife bar, a cutter rotatably arranged on one end of the knife bar, a lifting mechanism arranged on the bracket and acting on the other end of the knife bar for lifting or lowering the cutter, and a pressure tension adjustment mechanism arranged on one side of the cutter for adjusting the downward pressure of the cutter.

2. The flying knife according to claim 1, characterized in that: The cutter comprises a cutter disc and a wheel cutter body fixed on the cutter disc, and the cutter disc is rotatably connected to the cutter rod via a cutter shaft.

3. The flying knife according to claim 1, characterized in that: The tilting mechanism comprises a hand wheel and a tilting rod on the hand wheel. The hand wheel is rotatably connected to a hand wheel support plate on the bracket, and a lowering section is provided below the hand wheel.

4. The flying knife according to claim 1, characterized in that: The pressure tightness adjustment mechanism comprises a mounting plate fixed on the bracket, a screw rod threadedly connected to a screw hole on the mounting plate, a knob connected to the screw rod, and an elastic member arranged between the knife rod and the screw rod.

5. A bag opening mechanism for a bag making machine including the flying knife, characterized in that: The invention comprises an arch frame, a linear sliding module fixed on the arch frame and a flying cutter as described in any one of claims 1 to 4 connected to the output end of the linear sliding module.

6. The bag opening mechanism of the bag making machine including the flying knife according to claim 5, characterized in that: It also includes a cutter mounting plate and a cutter support plate. The cutter mounting plate is fixed on the output end of the linear sliding module. A positioning column is fixed on the cutter mounting plate. The positioning column is just inserted into the positioning hole on the above-mentioned bracket. One end of the cutter support plate is fixedly connected to the cutter mounting plate, and the other end is fixedly connected to the bracket.

7. The bag opening mechanism of the bag making machine comprising the flying knife according to claim 6, characterized in that: The cross section of the positioning column is a polygonal structure.

8. The bag opening mechanism of the bag making machine comprising the flying knife according to claim 5, characterized in that: It also includes a cutter support plate fixed on the arch frame, a mounting beam arranged below the cutter support plate, a gear shaft mounting seat fixed on the mounting beam, a gear shaft rotatably connected to the gear shaft mounting seat, a driving gear fixed on the gear shaft, an operating hand wheel fixed on the end of the gear shaft, and a transmission rack meshing with the driving gear, wherein the transmission rack is fixed on the side panels on both sides of the bag making machine.

Images