Large-size diaphragm high-precision cutting equipment

Abstract

The invention relates to the technical field of cutting equipment, in particular to large-size diaphragm high-precision cutting equipment which comprises cutting equipment for diaphragms, the cutting equipment is composed of a storage cover, a support, a mounting frame, a hydraulic telescopic rod and a cutting knife, and a cleaning structure for cleaning the cutting knife is arranged in the storage cover; the cleaning structure comprises a mounting plate, a scraping plate, a first guide rod and a first spring; a linkage structure is arranged in the storage cover and comprises a rack, a gear, a two-way lead screw and a sliding seat, and the upper end and the lower end of the rack are fixedly connected with the hydraulic telescopic rod and the cutting knife correspondingly; a liquid conveying mechanism connected with the scraping plate is installed on the upper surface of the storage cover and comprises a pump shell, a piston, an ejector rod, a check valve, a valve plate and a communicating structure. Lifting adjustment, cleaning and cooling lubrication of the cutting knife are integrated, the automatic and intelligent cutting process is achieved, all the components are tightly matched, the structure is compact, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a large-size diaphragm high-precision cutting device, in particular to a large-size diaphragm high-precision cutting device, belonging to the technical field of cutting devices. Background Art

[0002] The cutting machine is used for the segmentation and cutting of sheets in various industries. It does not require any molds. It is controlled by system software and then cuts the product directly. As long as the corresponding parameters are set on the operating platform, the computer transmits the corresponding instructions to the cutting machine. The cutting machine quickly cuts according to the accepted design drawings, with high automation and simple operation. It is a cutting device used in many industries. For example, when cutting diaphragms, whether large or small diaphragms, or thin films, cutting equipment will be used.

[0003] However, the cutting blade of the traditional cutting device is also exposed to the external environment when not in operation, which poses the risk of the cutting blade being damaged. After the cutting blade is retracted, some debris will adhere to the surface due to cutting the membrane, and too much garbage will accumulate in the storage position of the cutting blade for a long time, making it difficult to clean. In addition, the cutting blade has more contact with the outside air, and is easily corroded by the external environment, which reduces the service life of the cutting blade.

[0004] Therefore, it is urgent to improve the cutting equipment to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a large-size diaphragm high-precision cutting device with good protection effect, which can protect the cutting knife after use and effectively solve the above-mentioned problems.

[0006] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present invention includes: a large-size diaphragm high-precision cutting device, including a cutting device for diaphragms, the cutting device is composed of a storage cover, a bracket, a mounting frame, a hydraulic telescopic rod and a cutting knife, and a cleaning structure for cleaning the cutting knife is arranged in the storage cover; The cleaning structure comprises a mounting plate, a scraper, a first guide rod and a first spring; A linkage structure is arranged inside the storage cover, and the linkage structure includes a rack, a gear, a bidirectional lead screw and a slide seat, and the upper and lower ends of the rack are respectively connected and fixed to the hydraulic telescopic rod and the cutting knife; An infusion mechanism connected to the scraper is installed on the upper surface of the storage cover. The infusion mechanism includes a pump housing, a piston, a push rod, a check valve, a valve plate and a connecting structure. A connecting arm is fixedly connected between the push rod and the rack.

[0007] Preferably, the storage cover is hollow inside and its bottom side is through-shaped, there are two brackets, the two brackets are symmetrically welded to the outer surface of the storage cover, the mounting frame is fixedly mounted on the upper surface of the storage cover, and the hydraulic telescopic rod is fixedly mounted on the upper surface of the mounting frame.

[0008] Preferably, the cutting knife is located inside the storage cover, and the number of the cleaning structures is two, and the two cleaning structures are symmetrically distributed on the left and right sides of the cutting knife.

[0009] Preferably, the first guide rod and the first spring are both fixedly mounted on a side of the scraper away from the cutting knife, and the other end of the first guide rod passes through the interior of the mounting plate, the other end of the first spring is fixed to the outer surface of the mounting plate, and the first spring surrounds the outer surface of the first guide rod.

[0010] Preferably, the threads of the bidirectional lead screw are arranged oppositely, and the left and right ends of the bidirectional lead screw are connected to the inner wall bearings on the opposite side of the storage cover, the number of the slide seats is two, the two slide seats are symmetrically distributed outside the bidirectional lead screw, and the slide seats are connected to the bidirectional lead screw threads; Wherein, the two slide seats are respectively fixed to the two mounting plates.

[0011] Preferably, the gear is fixedly mounted on the outer surface of the bidirectional lead screw and meshes with the rack. The gear is located between the two slides. A guide rod penetrating the interior of the two slides is fixedly mounted between the inner walls on opposite sides of the storage cover.

[0012] Preferably, guide structures connected to the cutting knife are arranged on both sides of the storage cover away from the bidirectional lead screw, and the guide structure includes two mounting platforms distributed upper and lower, a second guide rod fixedly installed between the two mounting platforms, and a slider sleeved on the outer surface of the second guide rod and connected to one side of the cutting knife, and a second spring surrounding the outer surface of the second guide rod is fixedly installed between the top side of the slider and the top mounting platform.

[0013] Preferably, the communication structure includes a communication pipe, a three-way pipe and an infusion pipe, the number of the infusion pipes is two, and injection holes communicating with the infusion pipes are provided inside the two scrapers; Among them, the three-way tube is provided with an infusion cavity, a through hole and a slide groove inside, the two ends of the through hole are connected to the infusion cavity and the slide groove respectively, the number of the through hole and the slide groove is two, and the top ends of the two infusion tubes extend into the slide groove respectively.

[0014] Preferably, a pump chamber is opened inside the pump casing, the number of the check valves and valve plates are two, and the two check valves are symmetrically fixed and connected to the outer surface of the pump casing, the two ends of the connecting pipe are respectively fixedly connected to one of the check valves and the three-way pipe, the piston is reciprocatingly arranged in the pump chamber, and the push rod is fixedly installed on the upper surface of the piston and extends to the outside of the pump casing.

[0015] Preferably, mounting seats are fixedly installed between the inner walls on opposite sides of the storage cover, and an elastic abutment plate is elastically installed inside one of the mounting seats, the two ends of the three-way pipe are respectively plugged into the two mounting seats, and locking holes are provided inside the two mounting seats and the three-way pipe.

[0016] The present invention has at least the following beneficial effects: 1. This large-size diaphragm high-precision cutting equipment moves the cutting knife to the storage cover for storage through a hydraulic telescopic rod, which can not only protect the cutting knife and reduce its risk of damage, but also provide shielding protection for outsiders. At the same time, the linkage structure drives the cleaning structure and the infusion mechanism, so that the scraper can clean the surface of the cutting knife when it is retracted, effectively removing diaphragm debris and impurities, reducing erosion and wear on the cutting knife, and ensuring cutting quality and accuracy.

[0017] 2. The large-size diaphragm high-precision cutting equipment, through the installation of the first guide rod and the first spring, makes the scraper have better elasticity, can better resist the outer surface of the cutting knife, and thus improve the cleaning effect of the cutting knife.

[0018] 3. This large-size diaphragm high-precision cutting equipment realizes the limitation of the cutting knife by installing a guide structure, so that it can be lifted and lowered linearly, thereby ensuring the stability of the cutting knife during lifting and lowering, achieving the advantages of stable lifting and stable cutting.

[0019] 4. In this large-size diaphragm high-precision cutting equipment, when the two scrapers are against the cutting knife, the infusion tube moves in the slide groove and connects with the through hole. At this time, the coolant in the three-way pipe flows into the scraper along the infusion tube, achieving the cooling and lubrication effect on the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the linkage structure of the present invention; Figure 3 It is a structural cross-sectional view of the storage cover of the present invention; Figure 4 For the present invention Figure 1 A is a schematic diagram of the enlarged structure shown; Figure 5 It is a structural schematic diagram of the cleaning structure of the present invention; Figure 6 It is a structural front view of the storage cover of the present invention; Figure 7 It is a partial structural schematic diagram of the infusion mechanism of the present invention; Figure 8 It is a schematic diagram of the overall structure of the infusion mechanism of the present invention; Fig. 9 It is a structural cross-sectional view of the pump casing of the present invention; Fig.10 It is a structural cross-sectional view of the three-way pipe of the present invention.

[0021] In the figure, 1, storage cover; 2, bracket; 3, mounting frame; 4, hydraulic telescopic rod; 5, cutting knife; 6, cleaning structure; 601, mounting plate; 602, scraper; 603, first guide rod; 604, first spring; 605, injection hole; 7, linkage structure; 701, rack; 702, gear; 703, bidirectional screw; 704, slide seat; 705, guide rod; 8, guide structure; 801, mounting table; 80 2. Second guide rod; 803. Second spring; 804. Sliding block; 9. Infusion mechanism; 901. Pump housing; 902. Piston; 903. Push rod; 904. Check valve; 905. Valve plate; 906. Pump chamber; 907. Connecting pipe; 908. Three-way pipe; 909. Infusion tube; 910. Mounting seat; 911. Elastic abutment plate; 912. Locking hole; 913. Through hole; 914. Slide groove; 10. Connecting arm. DETAILED DESCRIPTION

[0022] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] like Figure 1 - Figure 5 As shown, a high-precision cutting device for large-size diaphragms includes a cutting device for diaphragms, and the cutting device consists of a storage cover 1, a bracket 2, a mounting frame 3, a hydraulic telescopic rod 4, and a cutting knife 5. The storage cover 1 is hollow inside, and its bottom side is through-shaped. There are two brackets 2, and the two brackets 2 are symmetrically welded to the outer surface of the storage cover 1. The mounting frame 3 is fixedly mounted on the upper surface of the storage cover 1, and the hydraulic telescopic rod 4 is fixedly mounted on the upper surface of the mounting frame 3. The cutting knife 5 is located inside the storage cover 1. The cutting knife 5 is moved to the storage cover 1 for storage by the hydraulic telescopic rod 4, which can not only protect the cutting knife 5 and reduce its risk of damage, but also shield it from outsiders. A mounting hole is provided inside the bracket 2 to facilitate the installation and fixation of the cutting knife 5.

[0024] In order to increase the service life of the cutting blade 5, in this embodiment, Figure 2 - Figure 5As shown, a cleaning structure 6 for cleaning the cutting blade 5 is arranged in the storage cover 1; the cleaning structure 6 comprises a mounting plate 601, a scraper 602, a first guide rod 603 and a first spring 604; the first guide rod 603 and the first spring 604 are both fixedly mounted on the side of the scraper 602 away from the cutting blade 5, and the other end of the first guide rod 603 passes through the interior of the mounting plate 601, the other end of the first spring 604 is fixed to the outer surface of the mounting plate 601, and the first spring 604 surrounds the outer surface of the first guide rod 603. Through the installation of the first guide rod 603 and the first spring 604, the scraper 602 has better elasticity, can better resist the outer surface of the cutting blade 5, and thus improve the cleaning effect of the cutting blade 5.

[0025] Specifically, there are two cleaning structures 6, and the two cleaning structures 6 are symmetrically distributed on the left and right sides of the cutting blade 5. The scraper 602 can be made of sponge material. Sponge has good liquid absorption and liquid retention capabilities, and can effectively absorb and store coolant or lubricating oil, thereby providing continuous cooling and lubricating effects when the scraper 602 contacts the cutting blade 5.

[0026] To improve the cleaning effect of the cutting blade 5, Figure 1 - Figure 4 As shown, a linkage structure 7 is arranged inside the storage cover 1, and the linkage structure 7 includes a rack 701, a gear 702, a bidirectional lead screw 703 and a slide 704. The upper and lower ends of the rack 701 are respectively connected and fixed to the hydraulic telescopic rod 4 and the cutting knife 5; the threads of the bidirectional lead screw 703 are arranged in opposite directions, and the left and right ends of the bidirectional lead screw 703 are connected to the inner wall bearing on the opposite side of the storage cover 1. There are two slides 704, and the two slides 704 are symmetrically distributed on the outside of the bidirectional lead screw 703, and the slides 704 are threadedly connected to the bidirectional lead screw 703; wherein, the two slides 704 are respectively fixed to the two mounting plates 601.

[0027] like Figure 2 As shown, the gear 702 is fixedly mounted on the outer surface of the bidirectional lead screw 703, and the gear 702 is meshed with the rack 701. The gear 702 is located between the two slides 704, and a guide rod 705 that passes through the two slides 704 is fixedly mounted between the inner walls on the opposite side of the storage cover 1.

[0028] When the present embodiment is in use, the cutting knife 5 is raised and lowered by the hydraulic telescopic rod 4 to achieve the cutting of large-sized diaphragms. When the cutting knife 5 rises, the cutting knife 5 is retracted into the storage cover 1 after use, thereby protecting the cutting knife 5. The meshing of the rack 701 and the gear 702 drives the bidirectional lead screw 703 to rotate. Since the threads of the bidirectional lead screw 703 are arranged in opposite directions, when the bidirectional lead screw 703 rotates, the two cleaning structures 6 are driven to the opposite sides through the two slides 704, so that the scraper 602 is against the cutting knife 5. When the cutting knife 5 is retracted, it can also be cleaned, thereby reducing the erosion of the cutting knife 5 by the film debris and the external environment, ensuring the normal use of the cutting knife 5, and improving the service life of the cutting knife 5.

[0029] In order to improve the cutting accuracy, in this embodiment, Figure 3 and Figure 4 As shown, the two sides of the storage cover 1 away from the bidirectional lead screw 703 are provided with a guide structure 8 connected to the cutting knife 5, and the guide structure 8 includes two mounting platforms 801 distributed up and down, a second guide rod 802 fixedly installed between the two mounting platforms 801, and a slider 804 sleeved and installed on the outer surface of the second guide rod 802 and connected to one side of the cutting knife 5, and a second spring 803 surrounding the outer surface of the second guide rod 802 is fixedly installed between the top side of the slider 804 and the top mounting platform 801. Through the installation of the guide structure 8, the cutting knife 5 is limited, so that it can be lifted and lowered linearly, and then the stability of the cutting knife 5 when it is lifted and lowered is ensured, achieving the advantages of stable lifting and stable cutting.

[0030] In order to further improve the use effect of the cutting knife, in this embodiment, Figure 1 , Figure 6 - Fig.10 As shown, the upper surface of the storage cover 1 is provided with an infusion mechanism 9 connected to the scraper 602, and the infusion mechanism 9 includes a pump housing 901, a piston 902, a push rod 903, a check valve 904, a valve plate 905 and a connecting structure, and a connecting arm 10 is fixedly connected between the push rod 903 and the rack 701. The connecting structure includes a connecting pipe 907, a three-way pipe 908 and an infusion pipe 909, and the number of the infusion pipes 909 is two, and the two scrapers 602 are provided with injection holes 605 connected to the infusion pipes 909; wherein, the three-way pipe 908 is provided with an infusion cavity, a through hole 913 and a chute 914, and the two ends of the through hole 913 are respectively connected to the infusion cavity and the chute 914, and the number of the through hole 913 and the chute 914 is two, and the top ends of the two infusion pipes 909 extend into the chute 914 respectively.

[0031] Specifically, Figure 8 - Fig.10As shown, a pump chamber 906 is provided inside the pump housing 901, and there are two check valves 904 and two valve plates 905, and the two check valves 904 are symmetrically fixed and connected to the outer surface of the pump housing 901, and the two valve plates 905 are elastically hingedly installed inside the two check valves 904. The two ends of the connecting pipe 907 are respectively fixedly connected to one of the check valves 904 and the three-way pipe 908, the piston 902 is reciprocatedly arranged in the pump chamber 906, and the push rod 903 is fixedly installed on the upper surface of the piston 902 and extends to the outside of the pump housing 901. When the two scrapers 602 are against the cutting knife 5, the infusion pipe 909 moves in the slide groove 914 and is connected to the through hole 913. At this time, the coolant in the three-way pipe 908 flows into the scraper 602 along the infusion pipe 909, achieving the cooling and lubricating effect on the blade.

[0032] It should be noted that a sealing plate is elastically hingedly installed in the through hole 913 to seal the through hole 913, and an elastic top connecting rod is installed inside one end of the infusion tube 909 connected to the slide groove 914, which can push the sealing plate open through the top connecting rod when the infusion tube 909 slides to the through hole 913, thereby achieving the connection between the through hole 913 and the infusion tube 909. The infusion tube 909 is adapted to the through hole 913, and the length of the slide groove 914 is adapted to the moving distance of the infusion tube 909.

[0033] When the present embodiment is in use, the connecting arm 10 adjusts the piston 902 by raising and lowering the rack 701. The lifting and lowering displacement of the piston 902 changes the pressure in the pump chamber 906, and cooperates with the opening and closing of the two valve plates 905 to realize the water delivery work. The cooling liquid is delivered to the three-way pipe 908 for storage through the connecting pipe 907. When the two scrapers 602 are against the cutting knife 5, the liquid delivery pipe 909 moves in the slide groove 914 and is connected to the through hole 913. At this time, the coolant in the three-way pipe 908 flows into the scraper 602 along the liquid delivery pipe 909, so as to realize the cooling and lubrication effect on the blade.

[0034] In this embodiment, mounting seats 910 are fixedly installed between the inner walls of opposite sides of the storage cover 1, and an elastic abutment plate 911 is elastically installed inside one of the mounting seats 910, and the two ends of the three-way pipe 908 are respectively plugged with the two mounting seats 910, and locking holes 912 are opened inside the two mounting seats 910 and the three-way pipe 908. A plug rod is detachably installed in the locking hole 912, which can realize the locking and fixing of the three-way pipe 908.

[0035] In summary, lifting and lowering the cutting knife 5 by the hydraulic telescopic rod 4 can not only protect the cutting knife 5 and reduce its risk of damage, but also shield and protect it from outsiders. At the same time, the linkage structure 7 drives the cleaning structure 6 and the infusion mechanism 9, so that the scraper 602 can clean the surface of the cutting knife 5 when it is retracted, effectively remove the film debris and impurities, reduce the erosion and wear of the cutting knife 5, ensure the cutting quality and accuracy, and the cooling and lubrication effect can effectively reduce the temperature and friction of the cutting knife 5 during operation, reduce the thermal deformation and wear of the blade, and improve the service life and performance of the cutting knife 5. This method integrates the lifting and lowering adjustment, cleaning and cooling and lubrication systems of the cutting knife 5, realizes an automated and intelligent cutting process, and the components are closely matched and compact in structure, which reduces the floor space and installation cost and improves production efficiency.

[0036] like Figure 1 - Fig.10 As shown, the principle of the large-size film high-precision cutting device provided in this embodiment is as follows: When the present invention is used, the cutting knife 5 is raised and lowered by the hydraulic telescopic rod 4 to achieve the cutting of large-sized membranes. When the cutting knife 5 is raised, the cutting knife 5 is retracted into the storage cover 1 after use, thereby protecting the cutting knife 5. The meshing of the rack 701 and the gear 702 drives the bidirectional lead screw 703 to rotate. Since the threads of the bidirectional lead screw 703 are arranged in opposite directions, the two sides of the cleaning structures 6 are driven by the two slides 704 when the bidirectional lead screw 703 rotates, so that the scraper 602 is against the cutting knife 5. When the cutting knife 5 is retracted, it can also be cleaned, thereby reducing the erosion of the cutting knife 5 by membrane debris and the external environment, ensuring the normal use of the cutting knife 5, and increasing the service life of the cutting knife 5. In addition, when the rack 701 is raised or lowered, the piston 902 is raised or lowered by the connecting arm 10. The lifting and lowering displacement of the piston 902 changes the pressure in the pump chamber 906, and cooperates with the opening and closing of the two valve plates 905 to realize water supply. The cooling liquid is transported to the three-way pipe 908 for storage through the connecting pipe 907. When the two scrapers 602 are against the cutting knife 5, the infusion pipe 909 moves in the slide groove 914 and is connected with the through hole 913. At this time, the coolant in the three-way pipe 908 flows into the scraper 602 along the infusion pipe 909, thereby realizing the cooling and lubrication effect on the blade.

[0037] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0038] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0039] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A high-precision cutting device for large-size membranes, including a cutting device for membranes, characterized in that: The cutting device is composed of a storage cover (1), a bracket (2), a mounting frame (3), a hydraulic telescopic rod (4), and a cutting knife (5); a cleaning structure (6) for cleaning the cutting knife (5) is provided in the storage cover (1); The cleaning structure (6) comprises a mounting plate (601), a scraper (602), a first guide rod (603) and a first spring (604); A linkage structure (7) is provided inside the storage cover (1), and the linkage structure (7) comprises a rack (701), a gear (702), a bidirectional lead screw (703) and a slide seat (704), and the upper and lower ends of the rack (701) are respectively connected and fixed to the hydraulic telescopic rod (4) and the cutting knife (5); An infusion mechanism (9) connected to the scraper (602) is mounted on the upper surface of the storage cover (1); the infusion mechanism (9) comprises a pump housing (901), a piston (902), a push rod (903), a check valve (904), a valve plate (905) and a connecting structure; a connecting arm (10) is fixedly connected between the push rod (903) and the rack (701).

2. The large-size film high-precision cutting device according to claim 1 is characterized in that: The storage cover (1) is hollow inside and has a through bottom. The number of the brackets (2) is two. The two brackets (2) are symmetrically welded to the outer surface of the storage cover (1). The mounting frame (3) is fixedly mounted on the upper surface of the storage cover (1). The hydraulic telescopic rod (4) is fixedly mounted on the upper surface of the mounting frame (3).

3. The large-size film high-precision cutting device according to claim 1 is characterized in that: The cutting knife (5) is located inside the storage cover (1), and the number of the cleaning structures (6) is two, and the two cleaning structures (6) are symmetrically distributed on the left and right sides of the cutting knife (5).

4. The large-size film high-precision cutting device according to claim 1 is characterized in that: The first guide rod (603) and the first spring (604) are both fixedly mounted on a side of the scraper (602) away from the cutting knife (5), and the other end of the first guide rod (603) passes through the interior of the mounting plate (601), and the other end of the first spring (604) is fixed to the outer surface of the mounting plate (601), and the first spring (604) surrounds the outer surface of the first guide rod (603).

5. The large-size film high-precision cutting device according to claim 3 is characterized in that: The threads of the bidirectional lead screw (703) are arranged opposite to each other, and the left and right ends of the bidirectional lead screw (703) are connected to the bearings on the inner wall of the storage cover (1) on the opposite side. There are two slide seats (704), which are symmetrically distributed outside the bidirectional lead screw (703), and the slide seats (704) are threadedly connected to the bidirectional lead screw (703); The two slide seats (704) are respectively fixed to the two mounting plates (601).

6. The large-size film high-precision cutting device according to claim 5, characterized in that: The gear (702) is fixedly mounted on the outer surface of the bidirectional lead screw (703), and the gear (702) is meshed with the rack (701). The gear (702) is located between the two slide seats (704), and a guide rod (705) penetrating the interior of the two slide seats (704) is fixedly mounted between the inner walls on the opposite side of the storage cover (1).

7. The large-size film high-precision cutting device according to claim 6, characterized in that: The storage cover (1) is provided with guide structures (8) connected to the cutting knife (5) on both sides away from the bidirectional lead screw (703), and the guide structure (8) comprises two mounting platforms (801) distributed above and below, a second guide rod (802) fixedly mounted between the two mounting platforms (801), and a slider (804) sleeved on the outer surface of the second guide rod (802) and connected to one side of the cutting knife (5), and a second spring (803) surrounding the outer surface of the second guide rod (802) is fixedly mounted between the top side of the slider (804) and the top mounting platform (801).

8. The large-size film high-precision cutting device according to claim 3, characterized in that: The communication structure comprises a communication pipe (907), a three-way pipe (908) and a liquid infusion pipe (909); the number of the liquid infusion pipes (909) is two, and injection holes (605) communicating with the liquid infusion pipes (909) are provided inside the two scrapers (602); The three-way tube (908) is provided with an infusion cavity, a through hole (913) and a slide groove (914) inside, and the two ends of the through hole (913) are respectively connected to the infusion cavity and the slide groove (914), and there are two through holes (913) and two slide grooves (914), and the top ends of the two infusion tubes (909) extend into the slide grooves (914) respectively.

9. The large-size film high-precision cutting device according to claim 8, characterized in that: A pump chamber (906) is provided inside the pump housing (901), the number of the check valves (904) and the number of the valve plates (905) are both two, and the two check valves (904) are symmetrically fixedly connected to the outer surface of the pump housing (901), the two ends of the connecting pipe (907) are respectively fixedly connected to one of the check valves (904) and the three-way pipe (908), the piston (902) is reciprocatingly arranged in the pump chamber (906), and the push rod (903) is fixedly installed on the upper surface of the piston (902) and extends to the outside of the pump housing (901).

10. The large-size film high-precision cutting device according to claim 9, characterized in that: Mounting seats (910) are fixedly mounted between the inner walls of opposite sides of the storage cover (1), and an elastic abutment plate (911) is elastically mounted inside one of the mounting seats (910). The two ends of the three-way pipe (908) are respectively plugged into the two mounting seats (910), and locking holes (912) are provided inside the two mounting seats (910) and the three-way pipe (908).

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