ZB48A small box oil seal paper stay wire knife pillow
Through the split assembly of knife pillow support and elastic buffer structure, the problems of easy damage and inconvenience of disassembly of horseshoe knife are solved, and efficient disassembly and long-life cutting device design is achieved.
Patent Information
- Application Number
- CN202422386061.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-29
AI Technical Summary
In existing wire-pull cutting devices, horseshoe knives and knife pillows are susceptible to collision damage, have short service life, and are inconvenient to disassemble and maintain, which affects cutting quality and efficiency.
The knife pillow support design is designed with split assembly, combining the buffer structure of elastic parts and guide wheels to reduce rigid collisions, and improve disassembly and assembly efficiency through eccentric shafts and limit blocks.
It improves the disassembly and assembly efficiency of the knife pillow, reduces the wear of the horseshoe knife, extends the service life, improves the stability of cutting quality and the convenience of equipment maintenance.
Smart Images
Figure CN223131492U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cigarette packaging machines, and particularly relates to a ZB48A small box oil seal paper wire drawing knife rest. Background Art
[0002] The wire drawing cutting device generally consists of a horseshoe knife part and a knife rest part. After the small box transparent paper and the wire drawing converge, the wire drawing is pasted on the transparent paper. During the continuous downward transportation process, when passing through the wire drawing cutting device, the extrusion cutting of the small box oil seal paper and the wire drawing pasted thereon is completed through the cooperation of the rotating horseshoe knife and the fixed knife rest.
[0003] As Figure 1 shown, when the operator threads the small box transparent paper and deals with the blockage fault of the small box transparent paper, it is necessary to frequently open and close the lower paper channel door 11 of the small box transparent paper. When closing the door, the knife rest 13 installed on it will cause a certain degree of collision to the horseshoe knife part. When the closing force is large, the impact load is extremely likely to cause damage to the horseshoe knife and the knife rest 13. Moreover, since the small box transparent paper is very thin, in order to ensure the cutting quality, it is often necessary to adjust the gap between the horseshoe knife and the knife rest to 0 gap or negative gap. However, the horseshoe knife and the knife rest 13 are in rigid contact during cutting, and this design without buffering results in rapid wear of the horseshoe knife and soon a groove is cut out on the knife rest, with a short service life and poor cutting quality stability.
[0004] In addition, when disassembling the knife rest support for replacement or maintenance, it is necessary to first remove the cover plate 12 at the end of the knife rest installation shaft, and then extract the knife rest installation shaft to remove the knife rest support from the shaft, which is inconvenient and time-consuming for disassembly and assembly. Summary of the Utility Model
[0005] Aiming at the above problems, the utility model provides a ZB48A small box oil seal paper wire drawing knife rest, which can improve the disassembly and assembly efficiency of the knife rest, reduce the wear of the guide wheel on the horseshoe knife, and improve the service life.
[0006] Specifically, the utility model provides a ZB48A small box oil seal paper wire drawing knife rest, which includes a knife rest support and a guide wheel arranged on the knife rest support. The knife rest support is installed on the lower paper channel door through a knife rest installation shaft. The knife rest support is assembled by an upper support and a lower support. After the upper support and the lower support are assembled, they are jointly clamped on the knife rest installation shaft;
[0007] The lower support is connected with the guide wheel through a bracket, the bracket is configured to rotate up and down, and an elastic member is arranged between the bracket and the lower support. When the bracket rotates upward, the elastic member is compressed.
[0008] Furthermore, the guide wheel is installed at one end of the bracket close to the horseshoe knife through an eccentric shaft.
[0009] Further, a bearing is provided inside the guide wheel, and gaskets are provided on both sides. The diameter of the gasket is larger than that of the guide wheel.
[0010] Further, a boss is provided on one side of the gasket close to the bearing, and the boss abuts against the inner ring of the bearing.
[0011] Further, a limit block is provided at the bottom of the lower support, and the limit block is used to limit the lowest position of the bracket when it rotates downward.
[0012] Further, a limit groove is provided at the bottom of the bracket, and the limit block is adapted to the limit groove.
[0013] Further, a positioning ring is provided on the knife rest mounting shaft, and the positioning ring is used to determine the axial position of the knife rest support.
[0014] Compared with the prior art, the working principle and beneficial effects of the present utility model are as follows:
[0015] (1) For the knife rest provided by the present utility model, the knife rest support is fixed by split assembly and clamping. When disassembling the knife rest support for replacement or maintenance, there is no need to disassemble the cover plate at the end of the knife rest mounting shaft and the knife rest mounting shaft. The knife rest support can be directly disassembled from the knife rest mounting shaft, thus greatly improving the disassembly and assembly efficiency.
[0016] (2) The bracket is rotatably connected to the lower support, and an elastic member is provided between the bracket and the lower support. When the guide wheel at the end of the bracket collides with the horseshoe knife, under the action of the elastic member, an elastic contact is formed between the guide wheel and the horseshoe knife, providing a certain buffering effect during cutting. At the same time, the damage caused by the rigid collision between the guide wheel and the horseshoe knife when closing the lower paper channel door is reduced, thereby effectively improving the service life of the components of the wire drawing cutting device. Description of the Drawings
[0017] Figure 1 Schematic diagram of the operation of the existing lower paper channel door;
[0018] Figure 2 Schematic diagram of the structure of the wire drawing cutting device in Embodiment 1;
[0019] Figure 3 Schematic diagram of the structure of the knife rest in Embodiment 1;
[0020] Figure 4 Exploded view of the knife rest in Embodiment 1;
[0021] Figure 5 Schematic diagram of the operation principle of the knife rest in Embodiment 1;
[0022] Figure 6 Schematic diagram of the structure of the horseshoe knife part in Embodiment 1;
[0023] Figure 7Explosion diagram of the horseshoe knife part in Embodiment 1.
[0024] Reference numerals:
[0025] 1 - Lower paper passage door; 12 - Cover plate; 13 - Knife rest; 14 - Knife rest mounting shaft; 2 - Knife rest support; 21 - Upper support; 22 - Lower support; 3 - Bracket; 31 - Limit groove; 32 - Limit block; 4 - Guide wheel; 41 - Eccentric shaft; 42 - Spacer; 5 - Spring; 51 - First stop screw; 52 - Second stop screw; 6 - Positioning ring; 7 - Horseshoe knife mounting shaft; 71 - Transmission shaft; 72 - Tool holder mounting shaft; 73 - Tool holder; 74 - Coupling; 741 - First connecting part; 742 - Second connecting part; 75 - Arc-shaped hole; 8 - Horseshoe knife; 81 - Mounting screw; 82 - Plug; 9 - Pull wire. Detailed implementation manners
[0026] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners.
[0027] Embodiment 1
[0028] As Figure 2 shown, this embodiment provides a ZB48A small box oil seal paper pull wire cutting device, including: a knife rest part and a horseshoe knife part. By the cooperation of the rotating horseshoe knife part and the fixed knife rest part, the extrusion cutting of the small box oil seal paper and the pull wire pasted thereon is completed.
[0029] Among them, as Figures 3-4 shown, the knife rest part is installed on the lower paper passage door 11. The knife rest part includes: a knife rest support 2 and a guide wheel 4 provided on the knife rest support 2. The knife rest support 2 is arranged on the knife rest mounting shaft 14 and is composed of an upper support 21 and a lower support 22. The upper support 21 and the lower support 22 are connected by a clamping screw. After the two are assembled, they clamp the knife rest mounting shaft 14. By removing the clamping screw, the upper support 21 and the lower support 22 can be separated, and then removed from the knife rest mounting shaft 14, effectively avoiding the problem that the cover plate 12 and the knife rest mounting shaft 14 need to be disassembled when the existing knife rest part is disassembled, and greatly improving the disassembly efficiency of the knife rest support 2. A positioning ring 6 is provided on the knife rest mounting shaft 14. The positioning ring 6 is connected to the knife rest mounting shaft 14 by a screw and is used to determine the axial position of the knife rest support 2 to ensure that the guide wheel 4 on the knife rest support 2 can be directly opposite to the horseshoe knife 8, ensuring the accuracy of the pull wire cutting.
[0030] The lower support 22 is connected to the guide wheel 4 through the bracket 3 and can rotate within a certain angle. One end of the bracket 3 is hinged to the lower support 3, and the other end is used to install the guide wheel 4. A spring 5 is arranged between the bracket 3 and the lower support 22, and a first stop screw 51 is arranged above the spring 5. The first stop screw 51 is used to adjust the magnitude of the spring force. In order to keep the adjusted spring force unchanged during operation, a threaded hole is opened on the front of the lower support 22, and a second stop screw 52 is installed to fix the position of the first stop screw 51. As Figure 5 shown, when the knife rest support 2 rotates downward and the guide wheel 4 contacts the horseshoe knife 8, it will drive the bracket 3 to rotate upward, compress the spring 5 at the same time, and then reset under the resilience of the spring 5, thereby reducing the rigid collision between the guide wheel 4 and the horseshoe knife 8 and playing a role in protecting the horseshoe knife 8 and the guide wheel 4.
[0031] A limit block 32 is arranged at the bottom of the lower support 22. Both ends of the limit block 32 are connected to the lower support 22 through screws. A limit groove 31 is arranged at the bottom of the bracket 3. The limit block 32 is adapted to the limit groove 31. When the bracket 3 is in the low position, the limit block 32 is located in the limit groove 31, and the limit block 32 is used to limit the lowest position of the downward rotation of the bracket 3.
[0032] Furthermore, the guide wheel 4 is installed at one end of the bracket 3 close to the horseshoe knife 8 through an eccentric shaft 41. Rotating the eccentric shaft 41 can finely adjust the height of the guide wheel 4, that is, adjust the gap between the guide wheel 4 and the horseshoe knife 8. Two screws on the bracket 3 are used to fix the circumferential position of the eccentric shaft 41. Bearings are arranged inside the guide wheel, and gaskets 42 are arranged on both sides. The diameter of the gasket 42 is larger than the diameter of the guide wheel 41, and a boss is arranged on the inner side of the gasket 42. The boss abuts against the inner ring of the bearing, and a pair of bearings and the guide wheel 4 are axially limited to prevent axial movement.
[0033] As Figure 6 shown, the horseshoe knife part includes: a horseshoe knife mounting shaft 7, a tool holder 73 and a horseshoe knife 8. The horseshoe knife mounting shaft 7 includes a transmission shaft 71 and a tool holder mounting shaft 72. The transmission shaft 71 extends into the equipment backplane and is connected to the power source of the equipment through a gear transmission method. The equipment power drives the transmission shaft 71 to rotate to realize the rotation function of the horseshoe knife mounting shaft 7. In order to perform the conventional fast and slow adjustment of the horseshoe knife 8 without opening the back cover of the fuselage, the horseshoe knife mounting shaft 7 is designed in a way that two shafts are connected by a coupling. After loosening the three fixing screws of the coupling, the conventional fast and slow adjustment of the horseshoe knife can be carried out.
[0034] Specifically, the tool holder mounting shaft 72 is connected to the transmission shaft 71 through a coupling. The tool holder 73 is provided on the tool holder mounting shaft 72. The coupling includes a first connecting portion 741 and a second connecting portion 742. The first connecting portion 741 is located close to the movement of the tool holder mounting shaft 72 on the transmission shaft 71 and is fixed by screws. The second connecting portion is located at the end of the tool holder mounting shaft 72, and an arc-shaped hole 75 is provided thereon. After the fixing screw passes through the arc-shaped hole 75, it is connected to the screw hole on the first connecting portion 741 to realize the connection between the transmission shaft 71 and the tool holder mounting shaft 72. The side of the first connecting portion 741 close to the second connecting portion 742 is designed as a counterbore to prevent the fixing screw of the first connecting portion 741 and the transmission shaft 71 from affecting the rotation of the tool holder mounting shaft 72 in the coupling.
[0035] The tool holder 73 is mounted on the tool holder mounting shaft 72 through bolts and rotates with the rotation of the tool holder mounting shaft 72. The tool holder 73 is in a T shape. After being inserted into the through hole of the tool holder mounting shaft 72, it is fixed to the tool holder mounting shaft 72 by bolts from the bottom. For the convenience of processing and to ensure the effective depth of the threaded hole, the upper part of the tool holder 73 is designed as a square, and the square top is fixed by 4 screws to adjust the parallelism of the horseshoe knife 8 relative to the tool rest. The horseshoe knife 8 is mounted on the tool holder 73 and fixed by mounting screws 81. The mounting screws 81 are perpendicular to the axis direction of the tool holder mounting shaft 72 and penetrate into the mounting holes from the side of the tool holder 73 to fix the horseshoe knife 8. In this way, the mounting screws 81 can be easily loosened and the horseshoe knife 8 can be taken out for replacement without disassembling the tool holder 73. A plug 82 is provided on the tool holder 73 in the axis direction parallel to the tool holder mounting shaft 72. The plug 82 is used to determine the axial position of the horseshoe knife 8 for quick installation.
[0036] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention belongs, based on the idea of the present invention, several simple deductions, deformations or replacements can also be made.
Claims
1. A ZB48A small box oil seal paper wire drawing knife rest, comprising a knife rest support (2) and a guide wheel (4) provided on the knife rest support (2), wherein the knife rest support (2) is mounted on a lower paper channel door (1) through a knife rest mounting shaft (14), and is characterized in that, The knife rest support (2) is assembled by an upper support (21) and a lower support (22), and the upper support (21) and the lower support (22) are clamped together on the knife rest mounting shaft (14) after assembly; The lower support (22) is connected to the guide wheel (4) through a bracket (3), the bracket (3) is configured to rotate up and down, and an elastic member is provided between the bracket (3) and the lower support (22). When the bracket (3) rotates upward, the elastic member is compressed.
2. The ZB48A small box oil seal paper wire drawing knife rest according to claim 1, characterized in that, The guide wheel (4) is installed at one end of the bracket (3) close to the horseshoe knife (8) through an eccentric shaft (41).
3. The ZB48A small box oil seal paper wire drawing cutter rest according to claim 2, characterized in that, Bearings are provided inside the guide wheel (4), and gaskets (42) are provided on both sides. The diameter of the gaskets (42) is larger than the diameter of the guide wheel (4).
4. The ZB48A small box oil seal paper wire drawing knife rest according to claim 3, characterized in that, A boss is provided on one side of the gasket (42) close to the bearing, and the boss abuts against the inner ring of the bearing.
5. The ZB48A small box oil seal paper wire drawing knife rest according to claim 1, characterized in that A limit block (32) is provided at the bottom of the lower support (22), and the limit block (32) is used to limit the lowest position of the bracket (3) rotating downward.
6. The ZB48A small box oil seal paper wire drawing knife rest according to claim 5, characterized in that, A limit groove (31) is provided at the bottom of the bracket (3), and the limit block (32) is adapted to the limit groove (31).
7. The ZB48A small box oil seal paper wire drawing knife rest according to claim 1, characterized in that, A positioning ring (6) is provided on the knife rest mounting shaft (14), and the positioning ring (6) is used to determine the axial position of the knife rest support (2).