A cutting assembly of a paper cutter

Abstract

The utility model provides a paper cutting assembly of paper cutter belongs to paper cutter technical field. Including the knife rest, still include: blade, the bottom of knife rest is equipped with the installation groove of sliding connection with the upper part of blade, quick locking mechanism, including fixedly set on the side wall of knife rest a plurality of sleeves, the both sides symmetry elastic connection of sleeve inside have the locating block, the other side wall of knife rest is equipped with the locking lever through blade, locking lever one end is equipped with connecting rod, and the end of connecting rod is equipped with the locking head of inserting the inside of sleeve and the cross section is bowl -shaped, and the release block of being placed between locking head and locking lever is worn on connecting rod. The utility model discloses through ingenious mechanical structure design, relative to traditional adoption bolt fixed through the mode of dismounting through the tool, through quick locking mechanism can realize the tool -free quick dismounting of paper cutter blade, has greatly improved work efficiency, has greatly simplified the blade replacement process, and the operation is labor saving, has shortened the equipment downtime maintenance time, and the production efficiency has been improved significantly.

Description

Technical Field

[0001] This utility model provides a paper cutting component for a paper cutter, belonging to the field of paper cutter technology. Background Technology

[0002] Paper cutters are indispensable key equipment in the printing, packaging, and related industries, used for cutting materials such as paper and cardboard. The cutting assembly, as the core actuator of the paper cutter, directly affects cutting accuracy, production efficiency, and operational safety. Within the cutting assembly, the blade is a consumable part; it gradually wears down and dulls with use, leading to burrs on the cut edges and decreased precision. Therefore, it needs to be replaced or sharpened regularly.

[0003] In existing technologies, the installation and fixing methods for paper cutter blades generally have some shortcomings. Traditional blade fixing methods mostly use multiple bolts for fastening. When changing blades, operators need to use wrenches and other tools to loosen and remove all the fastening bolts one by one before they can remove the old blade. When installing a new blade, the reverse steps need to be repeated, aligning the blade and then tightening the bolts one by one. This process is not only cumbersome and time-consuming, but also leads to excessive downtime of the equipment, seriously affecting the overall production efficiency. Based on this, this utility model provides a paper cutting component for a paper cutter. Utility Model Content

[0004] The technical problem solved by this utility model is that the operation is cumbersome, time-consuming and labor-intensive, and the equipment downtime for maintenance is too long, which seriously affects the overall production efficiency.

[0005] To solve the technical problem, the technical solution provided by this utility model is: a paper cutting component for a paper cutter, including a blade holder, and further comprising:

[0006] The blade holder has a mounting groove at its bottom that is slidably connected to the upper part of the blade;

[0007] A quick-locking mechanism for quick blade assembly and disassembly includes several sleeves fixedly mounted on one side wall of the blade holder. Positioning blocks are symmetrically and elastically connected to both sides of the sleeves. A locking rod passing through the blade is provided on the other side wall of the blade holder. A connecting rod is provided at one end of the locking rod. A locking head with a bowl-shaped cross-section is inserted into the sleeve at the end of the connecting rod. A release block is placed between the locking head and the locking rod on the connecting rod.

[0008] Furthermore, the two side walls of the tool holder are provided with through holes through which the locking rod passes and communicates with the inside of the sleeve.

[0009] Furthermore, the blade is provided with several through holes located on one side of the sleeve and matching the locking rod.

[0010] Furthermore, the upper part of the blade is provided with symmetrical limiting grooves on both sides, and the mounting groove sidewall is provided with a limiting rail that matches the limiting groove.

[0011] Furthermore, the inner sidewall of the sleeve is symmetrically provided with grooves that slide and connect with the positioning block on both sides. A damping spring is fixedly connected between the bottom of the groove and the rear sidewall of the positioning block. A second damping spring is provided at the bottom of the sleeve to abut against the bottom of the locking head.

[0012] Furthermore, the other end of the locking rod is provided with a handle, the maximum diameter of the release block is the same as the maximum diameter of the locking head, and the front end of the positioning block near the locking rod is provided with an inclined surface.

[0013] The beneficial effects of this utility model are:

[0014] This utility model, through its ingenious mechanical structure design, enables tool-free quick assembly and disassembly of paper cutter blades, compared to the traditional method of fixing with bolts and disassembling with tools. This is achieved through a quick-locking mechanism, which greatly improves work efficiency, simplifies the blade replacement process, saves effort, shortens equipment downtime for maintenance, and significantly improves production efficiency, thus possessing high practical value. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0017] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 .

[0018] Figure 4 This is a partial planar schematic diagram of the present invention.

[0019] 1. Tool holder; 2. Blade; 3. Mounting slot; 4. Quick locking mechanism; 5. Sleeve; 6. Positioning block; 7. Locking rod; 8. Connecting rod; 9. Locking head; 10. Release block; 11. Through hole; 12. Through hole; 13. Limiting slide groove; 14. Limiting slide rail; 15. Groove; 16. Damping spring one; 17. Damping spring two; 18. Inclined surface. Detailed Implementation

[0020] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0021] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0022] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] According to the appendix Figure 1 , 2 As shown: This utility model provides a paper cutting component for a paper cutter, including a blade holder 1 and a blade 2. The blade 2 has several through holes 12. The bottom of the blade holder 1 has an installation groove 3 that is slidably connected to the upper part of the blade 2. The upper part of the blade 2 has symmetrical limiting grooves 13 on both sides. The side wall of the installation groove 3 has a limiting rail 14 that matches the limiting groove 13. When the blade 2 is installed into the installation groove 3 on the blade holder 1, it is limited to prevent the installation position from being skewed.

[0024] As per the instruction manual Figure 1 , 2As shown in Figures 3 and 4: The quick-locking mechanism 4 for quick assembly and disassembly of the blade 2 includes several sleeves 5 fixedly mounted on one side wall of the blade holder 1 and positioned on one side of the through hole 12. Positioning blocks 6 are symmetrically and elastically connected to both sides of each sleeve 5. A locking rod 7 passing through the through hole 12 on the blade 2 is provided on the other side wall of the blade holder 1. A connecting rod 8 is provided at one end of the locking rod 7, and a locking head 9 with a bowl-shaped cross-section is provided at the end of the connecting rod 8, which is inserted into the sleeve 5. A release block 10 is passed through the connecting rod 8 and positioned between the locking head 9 and the locking rod 7. A handle is provided at the other end of the locking rod 7. The maximum diameter of the release block 10 is the same as the maximum diameter of the locking head 9. An inclined surface 18 is provided at the front end of the positioning block 6 near the locking rod 7. Grooves 15 slidably connected to the positioning blocks 6 are provided symmetrically on both sides of the inner side wall of the sleeve 5. The bottom of the groove 15 is connected to the rear end of the positioning block 6. A damping spring 16 is fixedly connected between the walls. A damping spring 2 17 is provided at the bottom of the sleeve 5 to abut against the bottom of the locking head 9. Through holes 11 are provided on both sides of the tool holder 1 for the locking rod 7 to pass through and communicate with the inside of the sleeve 5, which clarifies the installation path of the locking rod 7 and ensures that it can accurately pass through the tool holder 1 and cooperate with the sleeve 5. Specifically, the damping spring 16 provides a reset elastic force for the positioning block 6, while the damping spring 2 17 applies a preload force to the locked locking head 9 to make the connection tighter. The handle provides the operator with a convenient point of force application. The diameter relationship between the release block 10 and the locking head 9 is the key design to realize the unlocking function. The inclined surface 18 at the front end of the positioning block 6 serves as a guide surface and interacts with the locking head 9 and the release block 10 during the locking and unlocking process to realize the radial extension and retraction of the positioning block 6.

[0025] The principle of this utility model

[0026] The installation and locking process of the blade is as follows: First, guide the blade 2 through the limiting slide groove 13 and the limiting slide rail 14 into the mounting groove 3 of the tool holder 1, ensuring that the through hole 12 on the blade 2 is aligned with the through holes 11 on both sides of the tool holder 1. The operator holds the handle of the locking rod 7 and pushes it in. The locking rod 7 passes through the through hole 11 of the tool holder 1 and the through hole 12 of the blade 2 in sequence. Finally, the locking head 9 at the end of the connecting rod 8 enters the sleeve 5. When the cup-shaped locking head 9 contacts the inclined surface 18 at the front end of the two positioning blocks 6, its outer arc surface will generate a component force along the inclined surface 18, locking the two positioning blocks 6. The positioning block 6 is pushed outward, allowing it to overcome the elastic force of the damping spring 16 and slide outward along the groove 15. The locking rod 7 continues to be pushed. When the widest diameter part of the locking head 9 passes the positioning block 6, under the action of the damping spring 16, the two positioning blocks 6 quickly rebound inward and get stuck behind the locking head 9, thereby preventing the locking head 9 from exiting the sleeve 5. At this time, the bottom of the locking head 9 will press against the damping spring 17. The reaction force provided by the spring can eliminate the axial clearance of the entire locking mechanism and ensure the tightness of the lock. Thus, the locking process is completed, and the blade 2 is firmly fixed on the tool holder 1.

[0027] The unlocking and disassembly process of the blade is as follows: A release block 10 is inserted between the locking head 9 and the main body of the locking rod 7 on the connecting rod 8. The maximum diameter of the release block 10 is the same as the maximum diameter of the locking head 9. When unlocking is required, the operator grips the handle and continues to push the locking rod 7 forward. The damping spring 17 is further compressed, causing the release block 10 to move towards the sleeve 5. During this process, the front end of the release block 10 contacts the inclined surfaces 18 of the two positioning blocks 6. Due to its large diameter, it will also lock the two positioning blocks 6. Push block 6 outward to compress damping spring 16 until the two positioning blocks 6 reset and contact the rear end of release block 10. Then, grasp the handle and pull outward. With the rebound reset of damping spring 17, the two positioning blocks 6 contact the rear end of release block 10, the front end of release block 10, and the front section of positioning block 6 in sequence. This releases the limitation of positioning block 6 on locking head 9, allowing locking head 9 to be smoothly pulled out of sleeve 5. After the locking rod 7 is completely pulled out, the blade 2 can be easily slid out of mounting groove 3, completing the disassembly.

[0028] In summary, this utility model, through its ingenious mechanical structure design, enables tool-free quick assembly and disassembly of paper cutter blades, compared to the traditional method of fixing with bolts and disassembling with tools. This significantly improves work efficiency, greatly simplifies the blade replacement process, reduces labor intensity, shortens equipment downtime for maintenance, and significantly increases production efficiency, thus possessing high practical value.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A paper cutting assembly for a paper cutter, comprising a blade holder (1), characterized in that: Also includes: The blade (2) has a mounting groove (3) at the bottom of the blade holder (1) that is slidably connected to the upper part of the blade (2); The quick-locking mechanism (4) for quick assembly and disassembly of the blade (2) includes several sleeves (5) fixedly mounted on one side wall of the blade holder (1). The sleeves (5) are symmetrically and elastically connected to two sides. The other side wall of the blade holder (1) is provided with a locking rod (7) that passes through the blade (2). One end of the locking rod (7) is provided with a connecting rod (8). The end of the connecting rod (8) is provided with a locking head (9) that is inserted into the sleeve (5) and has a bowl-shaped cross-section. A release block (10) is placed between the locking head (9) and the locking rod (7) on the connecting rod (8).

2. The paper cutting assembly of a paper cutter according to claim 1, characterized in that: The tool holder (1) has through holes (11) on both sides for the locking rod (7) to pass through and communicate with the inside of the sleeve (5).

3. The paper cutting assembly of a paper cutter according to claim 1, characterized in that: The blade (2) has several through holes (12) located on one side of the sleeve (5) and matched with the locking rod (7).

4. The paper cutting assembly of a paper cutter according to claim 1, characterized in that: The upper part of the blade (2) is provided with symmetrical limiting grooves (13) on both sides, and the mounting groove (3) is provided with a limiting rail (14) that matches the limiting groove (13) on its side wall.

5. The paper cutting assembly of a paper cutter according to claim 1, characterized in that: The inner sidewall of the sleeve (5) is symmetrically provided with grooves (15) that are slidably connected to the positioning block (6). A damping spring (16) is fixedly connected between the bottom of the groove (15) and the rear sidewall of the positioning block (6). A damping spring (17) is provided at the bottom of the sleeve (5) to abut against the bottom of the locking head (9).

6. The paper cutting assembly of a paper cutter according to claim 1, characterized in that: The locking rod (7) has a handle at the other end, the maximum diameter of the release block (10) is the same as the maximum diameter of the locking head (9), and the front end of the positioning block (6) near the locking rod (7) has an inclined surface (18).

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