CN109794982B

CN109794982B - Fiber cutting device

Info

Publication number: CN109794982B
Application number: CN201910206455.1A
Authority: CN
Inventors: 魏祖林
Original assignee: Zhongshan Zhen De Mei Precision Machinery Co ltd
Current assignee: Zhongshan Zhen De Mei Precision Machinery Co ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2024-03-15
Anticipated expiration: 2039-03-19
Also published as: CN109794982A

Abstract

The invention discloses a fiber cutting device which comprises a power source, a gear box, a swinging cutter mechanism, a reset sensor and a swinging cutter base plate, wherein the swinging cutter mechanism comprises two swinging cutter mechanisms, each swinging cutter mechanism consists of a swinging cutter wheel, a swinging cutter frame and a wire cutting blade, the swinging cutter wheels are provided with a backward extending rotating shaft, the swinging cutter mechanisms are arranged on the gear box through the rotating shafts, the rotating shafts of the two swinging cutter mechanisms respectively correspond to two gears meshed with each other in the gear box, one rotating shaft extends out of the gear box backwards and is connected with the power source, a connecting rod extending forwards is formed at the eccentric position of the swinging cutter wheels, the swinging cutter frames are arranged on the connecting rod through bearings, the wire cutting blades are horizontally arranged at the tops of the swinging cutter frames, the bottoms of the two swinging cutter frames are both arranged on the swinging cutter base plate, and the reset sensor is arranged on the gear box. The invention solves the problem of punching and clamping when a plurality of fiber yarns are continuously conveyed and cut at high speed.

Description

Fiber cutting device

Technical Field

The invention relates to the technical field of chemical fiber yarn production, in particular to a fiber yarn cutting device.

Background

The current cutting device on the market is characterized in that one cutting blade is fixed, the other cutting blade is pushed out and retracted by an air cylinder or other power to finish cutting action, and because the fiber is continuously conveyed, when two cutting blades are combined together during cutting, the fiber is easy to cause cutting blade conveying blockage when the fiber is broken, so that the fiber is not smoothly conveyed, even the fiber is directly blocked on the surface of the protruding cutting blade, especially when the quantity of the fiber is large and the conveying speed is greater than 20 m/min, the fiber cannot directly work, and meanwhile, the current cutting mode on the market is too fast due to the fact that the cutting speed is too short as the fiber is required to cut, so that the cutting period cannot be finished in less than 1 second.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a fiber yarn cutting device which can effectively solve the problems of knife striking and clamping when a plurality of fiber yarns are continuously conveyed and cut at a high speed.

In order to achieve the above purpose, the technical scheme provided by the invention is as follows: the fiber yarn cutting device comprises a power source, a gear box, a swinging cutter mechanism, a reset sensor and a swinging cutter bottom plate, wherein the swinging cutter mechanism is provided with two swinging cutter mechanisms which are arranged on the gear box in a bilateral symmetry structure, each swinging cutter mechanism consists of a swinging cutter wheel, a swinging cutter frame and a wire cutting blade, the swinging cutter wheel is formed with a backward extending rotating shaft, the swinging cutter mechanism is arranged on the gear box through the rotating shaft, the rotating shafts of the two swinging cutter mechanisms are parallel to each other, the two rotating shafts respectively correspond to two gears meshed with each other in the gear box, namely, one gear is sleeved on one rotating shaft, one rotating shaft extends backwards out of the gear box and is connected with the power source, the power source drives the two swinging cutter mechanisms to rotate synchronously and relatively, the eccentric position of the swinging cutter wheel is provided with a connecting rod extending forwards, the swinging knife rest is arranged on the connecting rod through a bearing, the wire cutting knife blade is horizontally arranged on the top of the swinging knife rest, the swinging knife rest and the wire cutting knife blade can synchronously and eccentrically move along with the rotation of the swinging knife mechanism, the knife edge part of the wire cutting knife blade always faces the direction of the fiber wire in the moving process, the two wire cutting knife blades can be opened or closed in the synchronous and eccentric movement process, the fiber wire between the two wire cutting knife blades is cut in the closing state, the two wire cutting knife blades all contain downward moving directions in the process of approaching and separating from the fiber wire, the moving directions are the same as the conveying direction of the fiber wire from top to bottom, the bottoms of the two swinging knife rest are both arranged on a swinging knife bottom plate, the swinging knife rest of one swinging knife mechanism connected with a power source is fixedly arranged on the swinging knife bottom plate, the swinging knife rest of the other swinging knife mechanism is slidably arranged on the swinging knife bottom plate through a guide rail, the swinging knife bottom plate moves along with the movement of the swinging knife rest fixed on the swinging knife bottom plate, meanwhile, the other swinging knife rest is restrained by the guide rail on the swinging knife bottom plate and can only slide in the left-right direction, a vacancy is arranged in the middle of the swinging knife bottom plate and is used for falling down of the fiber yarn after cutting, the reset sensor is arranged on the gear box, the reset sensor receives signals that the two cutting knife blades move from the initial positions to the initial positions, namely the cycle of cutting action, and then the signals are transmitted to the power source to stop working and wait for the next cutting action, and meanwhile, the movement speed of the two cutting knife blades is controlled to be greater than the conveying speed of the fiber yarn from top to bottom through the power source, so that the fiber yarn is prevented from cutting or blocking in the falling process after cutting, and continuous high-speed cutting of the fiber yarn is realized.

Further, the power source is a servo motor and a planetary reducer which is matched with the servo motor.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. according to the invention, the movement speed of the two wire cutting blades is controlled by the servo motor, and the movement speed of the two wire cutting blades is larger than the conveying speed of the fiber from top to bottom, so that the cutting and stopping of the fiber in the wire cutting process are avoided, and the smooth cutting of the fiber is ensured.

2. According to the invention, the two wire cutting blades act as one cycle from opening to closing, so that continuous high-speed automatic wire cutting control can be realized.

3. In the cutting device, the wire cutting blades are vulnerable parts, and the upper parts of the two wire cutting blades are unobstructed, so that the wire cutting device is convenient to replace.

4. The invention is not limited to the diameter, the conveying speed and the number of the fiber yarns, and is especially suitable for occasions requiring continuous and non-stop fiber yarn conveying at high speed.

5. The invention has compact structure, convenient operation, and only one power source, can realize a plurality of actions, and is convenient for maintenance.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a front view of the present invention.

Fig. 4 is a bottom view of the present invention.

Fig. 5 is a half-sectional view in the C-direction of the present invention.

Fig. 6 is a diagram of the motion trajectories of two wire cutting blades of the present invention.

Detailed Description

The invention will be further illustrated with reference to specific examples.

As shown in fig. 1 to 5, the fiber cutting device provided in this embodiment includes a power source, a gear box 2, a swinging cutter mechanism 3, a reset sensor 5 and a swinging cutter base plate 6, the swinging cutter mechanism 3 has two swinging cutter wheels 31, a swinging cutter rest 32 and a wire cutting blade 33, each swinging cutter mechanism 3 is arranged on the gear box 2 in a bilateral symmetry structure, the swinging cutter wheel 31 is formed with a rotating shaft 311 extending backwards, the swinging cutter mechanism 3 is arranged on the gear box 2 through the rotating shaft 311, the rotating shafts 311 of the two swinging cutter mechanisms 3 are parallel to each other, and the two rotating shafts 311 are respectively corresponding to two gears 21 meshed with each other in the gear box 2, namely, one gear 21 is sleeved on one rotating shaft 311, one rotating shaft 311 extends backwards out of the gear box 2 and is connected with the power source, the power source is a servo motor 11 and a planetary reducer 12 arranged in a matched manner, the two swinging cutter mechanisms 3 are driven to rotate by the servo motor 11 and driven to synchronously and relatively rotate, a connecting rod 312 extending forwards is formed at the eccentric position of the swinging cutter wheel 31, the swinging cutter frame 32 is arranged on the connecting rod 312 through a bearing, the bottom of the swinging cutter frame 32 is arranged on the swinging cutter bottom plate 6, wherein the swinging cutter frame 32 of the swinging cutter mechanism 3 connected with a power source is fixedly arranged on the swinging cutter bottom plate 6, the swinging cutter frame 32 of the other swinging cutter mechanism 3 is slidably arranged on the swinging cutter bottom plate 6 through a guide rail 61, the wire cutting blade 33 is horizontally arranged on the top of the swinging cutter frame 32, the swinging cutter frame 32 and the wire cutting blade 33 can synchronously and eccentrically move along with the rotation of the swinging cutter mechanism 3, the cutting edge part of the wire cutting blade 33 always faces the direction of fiber in the moving process, the two wire cutting blades 33 can be opened or closed during the synchronous and eccentric movement, in the closed state, the cutting of the fiber between the two cutting blades 33 is realized, the movement track of the two cutting blades 33 can be seen from fig. 6, the two cutting blades 33 move downwards from the opening to the closing to the opening, the movement track is also in the same direction as the direction of the feeding of the fiber, the swinging blade bottom plate 6 moves along with the rotation of the swinging blade rest 32 fixed on the swinging blade bottom plate 6, the other swinging blade rest 32 is driven to slide only in the left and right directions under the constraint of the guide rail 61 on the swinging blade bottom plate 6, the middle of the swinging blade bottom plate 6 is provided with a vacancy for limiting the fiber to be separated from the cutting device, the two cutting blades 33 directly fall down after cutting, meanwhile, any one cutting blade 33 is matched with a reset sensor 5, the reset sensor 5 is arranged on the gear box 2, the reset sensor 5 receives a signal that the two cutting blades 33 move back to the initial position from the initial position, namely a cycle of the cutting action is transmitted to the servo motor 11 to stop working and wait for the next cutting action, and simultaneously, the cutting speed of the two cutting blades 33 is controlled by the servo motor 11 to be larger than the cutting speed of the fiber to be prevented from falling down after the fiber is cut down continuously, and the continuous fiber cutting speed is realized.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, so variations in shape and principles of the present invention should be covered.

Claims

1. A device is decided to cellosilk, its characterized in that: comprises a power source, a gear box, a swinging cutter mechanism, a reset sensor and a swinging cutter bottom plate, wherein the swinging cutter mechanism is provided with two swinging cutter mechanisms which are arranged on the gear box in a bilateral symmetry structure, each swinging cutter mechanism consists of a swinging cutter wheel, a swinging cutter frame and a wire cutting blade, the swinging cutter wheel is formed with a backward extending rotating shaft, the swinging cutter mechanism is arranged on the gear box through the rotating shaft, the rotating shafts of the two swinging cutter mechanisms are parallel to each other, the two rotating shafts respectively correspond to two gears meshed with each other in the gear box, one gear is sleeved on one rotating shaft, one rotating shaft extends back out of the gear box and is connected with the power source, the two swinging cutter mechanisms are driven to rotate by the power source and are driven to synchronously and relatively rotate, the eccentric position of the swinging cutter wheel is provided with a forward extending connecting rod, the swinging cutter frame is arranged on the connecting rod through a bearing, the cutting wire blades are horizontally arranged at the top of the swinging knife rest, the swinging knife rest and the cutting wire blades can synchronously and eccentrically move along with the rotation of the swinging knife mechanism, the cutting edge parts of the cutting wire blades always face the direction of the fiber wire in the moving process, the two cutting wire blades can be opened or closed in the synchronous and eccentric movement, the fiber wire between the two cutting wire blades is cut in the closing state, the two cutting wire blades all comprise downward moving directions in the processes of approaching and separating from the fiber wire, the moving directions after approaching and closing are the same as the conveying direction of the fiber wire from top to bottom, the bottoms of the two swinging knife rests are both arranged on a swinging knife bottom plate, the swinging knife rest of one swinging knife mechanism connected with a power source is fixedly arranged on the swinging knife bottom plate, the swinging knife rest of the other swinging knife mechanism is slidably arranged on the swinging knife bottom plate through a guide rail, the swinging knife bottom plate moves along with the movement of the swinging knife rest fixed on the swinging knife bottom plate, meanwhile, the other swinging knife rest is limited by the guide rail and can only slide in the left-right direction, a vacancy is arranged in the middle of the swinging knife bottom plate and is used for falling down of the fiber yarn after cutting, the reset sensor is arranged on the gear box and is used for receiving signals of the two fiber cutting blades moving from the initial positions to the initial positions and transmitting the signals to the power source to enable the power source to wait for an instruction of the next cutting action, and the power source is used for controlling the movement speed of the two fiber cutting blades to be greater than the conveying speed of the fiber yarn from top to bottom, so that the fiber yarn is prevented from being beaten or blocked in the falling process after cutting, and continuous high-speed cutting of the fiber yarn is realized.

2. A filament cutting device according to claim 1, wherein: the power source is a servo motor and a planetary reducer which is matched with the servo motor.