Synchronous self-rotation drive mechanism for slitting bottom blade shaft

Abstract

This utility model discloses a synchronous self-rotating drive mechanism for the slitting bottom blade shaft, belonging to the field of paper processing technology. The synchronous self-rotating drive mechanism for the slitting bottom blade shaft includes a paper feeding roller, a first drive shaft mounted at one end of the paper feeding roller, and a second drive shaft mounted at one end of the cutter shaft. A first driven gear is fixed externally to the first drive shaft, and a second driven gear is fixed externally to the second drive shaft. This utility model solves the problems of poor automation in existing paper cutting devices, where the blade shaft and cutter are not synchronized, resulting in paper scratches and affecting cutting quality. This utility model compensates for the difference in diameter between the two shafts through the gear ratio, achieving precise synchronization and synchronous output. It eliminates the need for manual pulling of the paper during cutting. The paper at the top of the paper feeding roller moves forward due to the rotation of the paper feeding roller, driving the paper cutter to move and cut simultaneously. The paper cutter rotates on the paper surface, achieving automated movement and slitting while maintaining structural stability.

Description

Technical Field

[0001] This utility model relates to the field of paper processing technology, specifically to a synchronous self-rotation drive mechanism for the slitting bottom blade shaft. Background Technology

[0002] During the printing process, paper usually needs to be cut to meet the processing requirements. Existing paper cutting devices mainly use cutters to cut the paper.

[0003] Chinese Patent No. CN220661065U discloses a paper cutting device, including a conveying mechanism, a positioning mechanism, and a cutting mechanism. The conveying mechanism includes a first conveyor belt for conveying paper. The positioning mechanism includes two positioning units, which are respectively disposed on both sides of the first conveyor belt. Each positioning unit includes a connecting plate, a positioning plate, and a first driving member. The positioning plate is rotatably disposed on the connecting plate and has an elongated hole. The movable end of the first driving member passes through the elongated hole to drive the positioning plate to rotate in a horizontal plane. The cutting mechanism includes a second driving member and a cutter. The second driving member drives the cutter to move vertically so that the cutter can come into contact with the paper.

[0004] In actual use, the paper cutting device of the above-mentioned patent has poor automation effect. During the paper movement, the blade shaft and the cutter are not synchronized, and the paper will have scratches, affecting the cutting quality. Therefore, it does not meet the existing needs. In response, we have proposed a slitting bottom blade shaft synchronous self-rotation drive mechanism. Utility Model Content

[0005] The purpose of this invention is to provide a synchronous self-rotation drive mechanism for the slitting bottom blade shaft, which solves the problem that the paper cutting device mentioned in the background art has poor automation effect in actual use, and the blade shaft and the cutter are not synchronized during the paper movement, resulting in paper scratches and affecting the cutting quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a synchronous self-rotating drive mechanism for a slitting bottom blade shaft, including a paper feeding roller, a cutting shaft above the paper feeding roller, a paper cutting blade at the upper end of the cutting shaft, the paper cutting blade being fixedly connected to the cutting shaft via a coupling, a first drive shaft being installed at one end of the paper feeding roller, and a second drive shaft being installed at one end of the cutting shaft, the diameter of the first drive shaft being twice the diameter of the second drive shaft, a first driven gear being fixed externally to the first drive shaft, and a second driven gear being fixed externally to the second drive shaft, the number of teeth of the first driven gear being twice the number of teeth of the second driven gear.

[0007] Preferably, a positioning rod is installed above the paper cutter, and equipment brackets are fixedly connected to both sides of the positioning rod. A drive box is provided on the outside of the equipment brackets.

[0008] Preferably, a servo motor is installed on the outside of the drive box, and a reducer is driven to the motor shaft of the servo motor. A drive gear is fixedly connected to the output end of the reducer. The drive gear meshes with a first driven gear, and an idler gear meshes between the drive gear and a second driven gear.

[0009] Preferably, the paper feeding roller and the cutter shaft are rotatably connected to the equipment bracket via bearings, a support plate is installed at the upper end of the paper cutter, the lower end of the support plate is rotatably connected to the cutter shaft via a bearing seat, and a dust cover is installed on the outside of the paper cutter, the dust cover being fixedly connected to the support plate.

[0010] Preferably, a fixing frame is welded to the upper end of the support plate, the fixing frame is fixedly connected to the positioning rod, and both ends of the positioning rod are provided with connecting parts, which are connected to the positioning rod by fixing screws.

[0011] Preferably, a drying air duct is fixedly connected to the front end of the connector, and an air outlet bend is provided at the lower end of the drying air duct. The position of the air outlet of the air outlet bend corresponds to the feeding position of the paper on the surface of the paper feeding roller, and an air inlet pipe is installed at the upper end of the drying air duct.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The paper cutting device of this utility model adopts a synchronous self-rotation drive mechanism for the cutting blade shaft. The first driven gear and the second transmission shaft are synchronously driven by the active gear inside the drive box. Due to the influence of the idler gear, the second transmission shaft rotates in the opposite direction to the first driven gear. Since the diameter of the cutting blade shaft is half that of the paper feeding roller, according to the speed ratio of the gear transmission and the linear speed synchronization requirement, when the number of teeth of the first driven gear is twice that of the second driven gear, the difference in diameter between the two shafts can be compensated by the gear tooth ratio to achieve precise synchronization and synchronous output. Thus, there is no need for manual pulling of the paper for cutting. As the paper feeding roller rotates, the cutting blade shaft rotates simultaneously. The paper at the top of the paper feeding roller moves forward due to the rotation of the paper feeding roller. During the movement, the paper feeding roller and the paper cutting blade rotate synchronously, driving the paper cutting blade to move and cut at the same time. The paper cutting blade rotates on the paper surface to achieve automated moving and cutting work, maintaining the stability of the structural position.

[0014] 2. The drying air duct in front of the paper feeding roller of this utility model is connected to hot air through the air inlet pipe and the hot air is discharged through the air outlet bend to dry the damp paper, thereby achieving efficient moving cutting work, maintaining structural stability, and achieving high-quality paper cutting work. Attached Figure Description

[0015] Figure 1This is a top-view axonometric drawing of the present invention;

[0016] Figure 2 This utility model Figure 1 Enlarged view of a portion of area A in the middle;

[0017] Figure 3 This is an axonometric view of the side of this utility model;

[0018] Figure 4 This is a structural diagram of the internal structure of the drive box of this utility model.

[0019] In the diagram: 1. Paper feed roller; 101. First drive shaft; 102. First driven gear; 2. Cutter shaft; 201. Second drive shaft; 202. Second driven gear; 3. Paper cutter; 301. Positioning rod; 302. Fixing frame; 303. Connecting piece; 304. Bearing seat; 305. Support plate; 306. Dust cover; 307. Coupling; 4. Drying air duct; 401. Air outlet bend; 402. Air inlet pipe; 5. Equipment support; 501. Drive box; 502. Reducer; 503. Servo motor; 504. Drive gear; 505. Idler wheel. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To address the issues of poor automation in existing paper cutting devices during practical use, such as missynchronization between the cutter shaft and the cutter during paper movement, resulting in paper streaking and affecting cutting quality, please refer to... Figure 1 - Figure 4 This embodiment provides the following technical solution:

[0022] The slitting bottom blade shaft synchronous self-rotation drive mechanism includes a paper feeding roller 1, a cutter shaft 2 above the paper feeding roller 1, and a paper cutting blade 3 at the upper end of the cutter shaft 2. The paper cutting blade 3 is fixedly connected to the cutter shaft 2 via a coupling 307. A first drive shaft 101 is installed at one end of the paper feeding roller 1, and a second drive shaft 201 is installed at one end of the cutter shaft 2. The diameter of the first drive shaft 101 is twice the diameter of the second drive shaft 201. A first driven gear 102 is fixedly attached to the outside of the first drive shaft 101, and a second driven gear 202 is fixedly attached to the outside of the second drive shaft 201. The number of teeth of the first driven gear 102 is equal to the number of teeth of the second driven gear 202. With the number of teeth of the first driven gear 102 being twice that of the second driven gear 202, the difference in diameter between the two shafts is compensated by the gear tooth ratio, achieving precise synchronization and synchronous output. This eliminates the need for manual pulling of the paper for cutting. As the paper feed roller 1 rotates, the cutting shaft 2 rotates simultaneously. The paper at the top of the paper feed roller 1 moves forward due to the rotation of the paper feed roller 1. During the movement, the paper feed roller 1 and the paper cutting blade 3 rotate synchronously, driving the paper cutting blade 3 to move and cut simultaneously. The paper cutting blade 3 rotates on the paper surface to achieve automated moving and cutting work, maintaining the stability of the structural position.

[0023] A positioning rod 301 is installed above the paper cutter 3. Equipment brackets 5 are fixedly connected to both sides of the positioning rod 301. A drive box 501 is installed on the outside of the equipment brackets 5.

[0024] A servo motor 503 is mounted externally on the drive box 501. The motor shaft of the servo motor 503 is connected to a reducer 502. The output end of the reducer 502 is fixedly connected to a drive gear 504. The drive gear 504 meshes with the first driven gear 102, and an idler gear 505 meshes with the second driven gear 202. The drive gear 504 inside the drive box 501 synchronously drives the first driven gear 102 and the second drive shaft 201. Due to the influence of the idler gear 505, the second drive shaft 201 rotates in the opposite direction to the first driven gear 102. Since the diameter of the cutter shaft 2 is half that of the paper feeding roller 1, based on the gear transmission speed ratio and the linear speed synchronization requirement, when the number of teeth of the first driven gear 102 is twice the number of teeth of the second driven gear 202, the difference in diameter between the two shafts can be compensated by the gear tooth ratio to achieve precise synchronization and synchronous output.

[0025] Specifically, the first driven gear 102 and the second transmission shaft 201 are synchronously driven by the drive gear 504 inside the drive box 501. Affected by the idler gear 505, the second transmission shaft 201 rotates in the opposite direction to the first driven gear 102. Since the diameter of the cutter shaft 2 is half that of the paper feed roller 1, according to the speed ratio of the gear transmission and combined with the linear speed synchronization requirements, when the number of teeth of the first driven gear 102 is twice the number of teeth of the second driven gear 202, the difference in diameter between the two shafts can be compensated by the gear tooth ratio to achieve precise synchronization and synchronous output. Thus, there is no need to manually pull the paper for cutting. As the paper feed roller 1 rotates, the cutter shaft 2 rotates at the same time. The paper at the top of the paper feed roller 1 moves forward due to the influence of the rotation of the paper feed roller 1. During the movement, the paper feed roller 1 and the paper cutter 3 rotate synchronously, driving the paper cutter 3 to move and cut at the same time. The paper cutter 3 rotates on the paper surface to achieve automated moving and cutting work, maintaining the stability of the structural position.

[0026] To address the issues of existing paper cutting devices' simplistic structure and the impact of damp paper on cutting quality during practical use, please refer to... Figure 1 - Figure 4 This embodiment provides the following technical solution:

[0027] The paper feed roller 1 and the cutter shaft 2 are rotatably connected to the equipment bracket 5 via bearings. The upper end of the paper cutter 3 is equipped with a support plate 305, and the lower end of the support plate 305 is rotatably connected to the cutter shaft 2 via a bearing seat 304. A dust cover 306 is installed on the outside of the paper cutter 3, and the dust cover 306 is fixedly connected to the support plate 305. The positioning rod 301 is connected to the fixed support plate 305 to keep the structural position of the paper cutter 3 stable, and the dust cover 306 protects the surface of the paper cutter 3 to reduce dust intrusion.

[0028] A fixing frame 302 is welded to the upper end of the support plate 305. The fixing frame 302 is fixedly connected to the positioning rod 301. Both ends of the positioning rod 301 are provided with connectors 303. The connectors 303 are connected to the positioning rod 301 by fixing screws. The drying air duct 4 is installed through the connectors 303 to assist in the cutting work.

[0029] The front end of the connector 303 is fixedly connected to a drying air duct 4. The lower end of the drying air duct 4 is provided with an air outlet bend 401. The position of the air outlet of the air outlet bend 401 corresponds to the feeding position of the paper on the surface of the paper feeding roller 1. The upper end of the drying air duct 4 is equipped with an air inlet pipe 402. The drying air duct 4 in front of the paper feeding roller 1 is connected to hot air through the air inlet pipe 402. The hot air is discharged through the air outlet bend 401 to dry the damp paper, thereby achieving efficient moving cutting work, maintaining structural stability, and achieving high-quality paper cutting work.

[0030] Specifically, the drying air duct 4 is installed through the connector 303 to assist in the cutting work. The drying air duct 4, which is set in front of the paper feeding roller 1, is connected to hot air through the air inlet pipe 402 and the hot air is discharged through the air outlet bend 401 to dry the damp paper. This achieves efficient moving cutting work, maintains the stability of the structure position, and achieves high-quality paper cutting work. The dust cover 306 protects the surface of the paper cutting blade 3 and reduces dust intrusion.

[0031] Working Principle: During use, the drying air duct 4 is installed via connector 303 for auxiliary cutting. The drive gear 504 inside the drive box 501 synchronously drives the first driven gear 102 and the second drive shaft 201. Influenced by the idler gear 505, the second drive shaft 201 rotates in the opposite direction to the first driven gear 102. Since the diameter of the cutter shaft 2 is half that of the paper feeding roller 1, based on the gear transmission speed ratio and the linear speed synchronization requirement, when the number of teeth on the first driven gear 102 is twice the number of teeth on the second driven gear 202, the difference in diameter between the two shafts can be compensated by the gear tooth ratio, achieving precise synchronization and synchronous output. This eliminates the need for manual pulling of the paper for cutting. The paper feed roller 1 rotates, and the cutter shaft 2 rotates simultaneously. The paper on the upper end of the paper feed roller 1 moves forward due to the rotation of the paper feed roller 1. During the movement, the paper feed roller 1 and the paper cutter 3 rotate synchronously, driving the paper cutter 3 to move and cut at the same time. The paper cutter 3 rotates on the paper surface to realize automated moving and cutting work, maintaining the stability of the structural position. The drying air duct 4 set in front of the paper feed roller 1 is connected to hot air through the air inlet pipe 402 and the hot air is discharged through the air outlet bend pipe 401 to dry the damp paper. This has realized efficient moving and cutting work, maintained the stability of the structural position, and achieved high-quality paper cutting work. The dust cover 306 protects the surface of the paper cutter 3 to reduce dust intrusion.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A slitting bottom knife shaft synchronous rotation driving mechanism, comprising a paper feeding roller (1), characterized in that, A cutter shaft (2) is provided above the paper feed roller (1). A paper cutter (3) is provided at the upper end of the cutter shaft (2). The paper cutter (3) is fixedly connected to the cutter shaft (2) through a coupling (307). A first drive shaft (101) is installed at one end of the paper feed roller (1), and a second drive shaft (201) is installed at one end of the cutter shaft (2). The diameter of the first drive shaft (101) is twice the diameter of the second drive shaft (201). A first driven gear (102) is fixed outside the first drive shaft (101), and a second driven gear (202) is fixed outside the second drive shaft (201). The number of teeth of the first driven gear (102) is twice the number of teeth of the second driven gear (202).

2. The synchronous self-rotation drive mechanism for the slitting bottom blade shaft according to claim 1, characterized in that, A positioning rod (301) is installed above the paper cutter (3), and a device bracket (5) is fixedly connected to both sides of the positioning rod (301). A drive box (501) is provided on the outside of the device bracket (5).

3. The slitting doctor shaft synchronous rotation driving mechanism according to claim 2, characterized in that, A servo motor (503) is mounted on the outside of the drive box (501). The motor shaft of the servo motor (503) is connected to a reducer (502). The output end of the reducer (502) is fixedly connected to a drive gear (504). The drive gear (504) meshes with a first driven gear (102), and an idler gear (505) meshes with a second driven gear (202).

4. The slitting doctor shaft synchronous rotation driving mechanism according to claim 2, wherein The paper feeding roller (1) and the cutter shaft (2) are rotatably connected to the equipment bracket (5) through bearings. The upper end of the paper cutter (3) is equipped with a support plate (305), and the lower end of the support plate (305) is rotatably connected to the cutter shaft (2) through a bearing seat (304). A dust cover (306) is installed on the outside of the paper cutter (3), and the dust cover (306) is fixedly connected to the support plate (305).

5. The slitting doctor shaft synchronous rotation driving mechanism according to claim 4, wherein, A fixing frame (302) is welded to the upper end of the support plate (305). The fixing frame (302) is fixedly connected to the positioning rod (301). Both ends of the positioning rod (301) are provided with connectors (303). The connectors (303) are connected to the positioning rod (301) by fixing screws.

6. The slitting blade shaft synchronous rotation driving mechanism according to claim 5, wherein The front end of the connector (303) is fixedly connected to a drying air duct (4). The lower end of the drying air duct (4) is provided with an air outlet bend (401). The position of the air outlet of the air outlet bend (401) corresponds to the conveying position of the paper on the surface of the paper feeding roller (1). An air inlet pipe (402) is installed at the upper end of the drying air duct (4).

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