Yarn breaking mechanism of drawing frame

Abstract

The utility model discloses a drawing frame yarn breaking mechanism which comprises a linear motor arranged on a drawing frame and a shearing mechanism arranged on the linear motor, and the shearing mechanism comprises a fixed shearing blade fixedly arranged on the linear motor, a movable shearing blade rotationally connected to the linear motor and a driving motor arranged on the linear motor. The driving motor is used for driving the movable shear blade and the fixed shear blade to shear, and the fixed shear blade and the movable shear blade are arranged at an included angle. According to the drawing frame, cotton slivers connected with the separated turnover barrel are automatically cut off through the arrangement of the linear motor and the cutting mechanism, the cutting mechanism is small in stroke, stable in action and durable in use, and the problem that a cutting mechanism in an existing drawing frame is prone to damage is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the field of textile equipment, in particular to a wire breaking mechanism of a drawing frame. Background Art

[0002] A draw frame is used to combine multiple slivers into one.

[0003] When the draw frame needs to replace the turnover barrel after completing the drawing, the gate knife on the equipment will rotate to cut the cotton slivers. However, the gate knife used in this cutting method is about half a meter long. As the use time increases, the gate knife will inevitably become loose, and due to the length, a large gap will be formed between the gate knife and the shear position on the equipment, resulting in difficulty in cutting the cotton slivers. The cotton slivers of the draw frame cannot be cut off, and the subsequent cotton slivers cannot fall into the new turnover barrel, resulting in the stop of replacing the new gate knife mechanism. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a wire cutting mechanism for a drawing frame to solve the problem that the cutting mechanism in the current drawing frame is easily damaged.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] A wire breaking mechanism for a drawing frame comprises a linear motor and a shearing mechanism arranged on the linear motor. The shearing mechanism comprises a fixed shearing blade fixedly arranged on the linear motor, a movable shearing blade rotatably connected to the linear motor, and a driving motor arranged on the linear motor. The driving motor is used for driving the movable shearing blade to shear with the fixed shearing blade. The fixed shearing blade and the movable shearing blade are arranged at an angle.

[0007] Furthermore, a micro switch is arranged on the side of the movable shear blade away from the linear motor, a sensing rod for triggering the micro switch is arranged on the micro switch, and the micro switch is arranged on the linear motor.

[0008] Furthermore, the fixed shearing blade and the movable shearing blade are coaxially arranged, the tail end of the movable shearing blade is provided with sector teeth, and the output shaft of the driving motor is provided with a gear meshing with the sector teeth.

[0009] Furthermore, the linear motor is transversely arranged above the gate-shaped outlet of the draw frame, and corresponding photoelectric switches are arranged on both sides of the gate-shaped outlet of the draw frame.

[0010] Furthermore, a controller is provided on the drawing frame, and the linear motor, the drive motor, the micro switch and the photoelectric switch are all electrically connected to the controller.

[0011] Furthermore, the number of the linear motors and the number of the shearing mechanisms are both two, and the two linear motors and the two shearing mechanisms are symmetrically arranged above the gate-shaped outlet of the drawing frame.

[0012] Furthermore, the sensing rod is arranged between the two ends of the movable shearing blade.

[0013] The significant beneficial effects achieved by the utility model are:

[0014] In the present application, a linear motor and a shearing mechanism are provided to automatically shear the cotton strips connected to the turnover barrel. The shearing mechanism itself has a small stroke, stable action, and long-lasting use, which effectively solves the problem that the cutting mechanism in the current drawing machine is easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a schematic diagram of the main structure of embodiments 1 and 2 of the utility model;

[0016] Attached Figure 2 It is a schematic diagram of the top view structure of the linear motor in Embodiments 1 and 2 of the utility model;

[0017] Attached Figure 3 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0018] Attached Figure 4 This is a schematic diagram of the main structure of Example 3 of the utility model.

[0019] In the attached drawings, 1. linear motor; 2. fixed shearing blade; 3. movable shearing blade; 4. driving motor; 5. micro switch; 6. sensing rod; 7. sector teeth; 8. photoelectric switch; 9. controller. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] Example 1

[0022] like Figure 1 , Figure 2 and Figure 3As shown, a wire breaking mechanism of a drawing frame comprises a linear motor 1 mounted on the drawing frame and a shearing mechanism mounted on a slider of the linear motor 1, wherein the shearing mechanism comprises a fixed shearing blade 2 fixedly mounted on the slider of the linear motor 1, a movable shearing blade 3 rotatably connected to the slider of the linear motor 1, and a driving motor 4 fixedly mounted on the slider of the linear motor 1, wherein the movable shearing blade 3 and the fixed shearing blade 2 are arranged at an angle, and the driving motor 4 is used to drive the movable shearing blade 3 to shear with the fixed shearing blade 2;

[0023] The linear motor 1 is installed horizontally above the gate-shaped outlet of the drawing frame, and the linear motor 1 is used to drive the shearing mechanism to move above the gate-shaped outlet of the drawing frame, thereby shearing the sliver connected to the cotton strip leaving the turnover barrel;

[0024] In order to facilitate the cutting mechanism to judge the position of the cotton strips and then cut the cotton strips in time without manual interference, a micro switch 5 is installed on the side of the movable cutting blade 3 away from the linear motor 1 in the present application, and a sensing rod 6 for triggering the micro switch 5 is installed on the switch of the micro switch 5, and the micro switch 5 is installed on the linear motor 1;

[0025] The linear motor 1 drives the shearing mechanism, the micro switch 5 and the sensing rod 6 to move horizontally. When the sensing rod 6 touches the cotton strip and is blocked, the micro switch 5 is triggered. The driving motor 4 in the shearing mechanism drives the movable shear blade 3 to shear with the fixed shear blade 2 through the signal of the micro switch 5, and the cotton strip is cut;

[0026] In order to facilitate the overall coordinated action, a controller 9 is installed on the drawing frame, and the linear motor 1, the drive motor 4 and the micro switch 5 are all electrically connected to the controller 9, so that after the micro switch 5 is triggered, the drive motor 4 promptly drives the movable shear blade 3 to shear with the fixed shear blade 2;

[0027] In order to prevent the micro switch 5 from being triggered in advance, the sensing rod 6 connected to the micro switch 5 is located between the two ends of the movable cutting blade 3 in the length direction in this embodiment. In this way, the micro switch 5 will be triggered and the cotton strip will be cut only after the cotton strip enters between the movable cutting blade 3 and the fixed cutting blade 2.

[0028] In this embodiment, the fixed shearing blade 2 and one end of the movable shearing blade 3 are coaxial, and the tail end of the movable shearing blade 3 is provided with a sector tooth 7. A gear meshing with the sector tooth 7 is installed on the output shaft of the driving motor 4. The output shaft of the driving motor 4 rotates to rotate the movable shearing blade 3, and the angle between the movable shearing blade 3 and the fixed shearing blade 2 changes to perform shearing.

[0029] In practical applications, the controller 9 should be connected to the main controller 9 on the drawing frame to facilitate timely judgment of the state of the turnover barrel and perform the cutting operation after the turnover barrel is full and leaves.

[0030] Working principle: after the controller 9 receives the signal that the turnover barrel leaves the drawing machine, the linear motor 1 drives the cutting mechanism, the micro switch 5 and the sensing rod 6 to move horizontally, and the micro switch 5 is triggered after the cotton strip enters between the movable shearing blade 3 and the fixed shearing blade 2. After the controller 9 receives the trigger signal of the micro switch 5, it controls the drive motor 4 to drive the movable shearing blade 3 to shear with the fixed shearing blade 2 to cut the cotton strip, and returns to its position after the cotton strip is cut.

[0031] In combination with the above, in the present application, a linear motor 1 and a shearing mechanism are set up to automatically shear the cotton strips connected to the turnover barrel. The shearing mechanism itself has a small stroke, stable action, and long-lasting use, which effectively solves the problem that the cutting mechanism in the current drawing machine is easily damaged.

[0032] Example 2

[0033] like Figure 1 As shown, the structure of this embodiment is substantially the same as that of embodiment 1. This embodiment is further optimized on the basis of embodiment 1, in order to facilitate accurate judgment of the time when the turnover barrel leaves the drawing frame, and to prevent the sliver from sagging and being unable to enter between the movable shear blade 3 and the fixed shear blade 2 after the turnover barrel leaves;

[0034] In this embodiment, corresponding photoelectric switches 8 are installed on both sides of the gate-shaped outlet of the drawing machine. The photoelectric switch 8 is electrically connected to the controller 9. The time when the turnover barrel leaves is grasped by the setting of the photoelectric switch 8, so that the linear motor 1 can drive the cutting mechanism to move in time to cut the cotton strips.

[0035] Example 3

[0036] like Figure 4 As shown, the structure of this embodiment is roughly the same as that of embodiment 2. This embodiment is further optimized on the basis of embodiment 2. At present, general drawing machines have two turnover barrel stations. Therefore, in order to facilitate the cutting of the cotton strips on the two stations, in this embodiment, the number of linear motors 1 and shearing mechanisms are two, the number of micro switches 5 and sensor rods 6 are also two, and the linear motors 1 and the shearing mechanisms are symmetrically installed above the door-shaped outlet of the drawing frame to facilitate the cotton strip cutting operation on both sides at the same time.

Claims

1. A wire breaking mechanism for a drawing frame, characterized in that: The invention comprises a linear motor (1) arranged on a drawing frame and a shearing mechanism arranged on the linear motor (1); the shearing mechanism comprises a fixed shearing blade (2) fixedly arranged on the linear motor (1), a movable shearing blade (3) rotatably connected to the linear motor (1), and a driving motor (4) arranged on the linear motor (1); the driving motor (4) is used to drive the movable shearing blade (3) to shear with the fixed shearing blade (2); the fixed shearing blade (2) and the movable shearing blade (3) are arranged at an angle.

2. A wire breaking mechanism for a drawing frame according to claim 1, characterized in that: A micro switch (5) is arranged on the side of the movable shear blade (3) away from the linear motor (1), a sensing rod (6) for triggering the micro switch (5) is arranged on the switch of the micro switch (5), and the micro switch (5) is arranged on the linear motor (1).

3. A wire breaking mechanism for a drawing frame according to claim 2, characterized in that: The fixed shearing blade (2) and the movable shearing blade (3) are coaxially arranged, the tail end of the movable shearing blade (3) is provided with a sector tooth (7), and the output shaft of the driving motor (4) is provided with a gear meshing with the sector tooth (7).

4. A wire breaking mechanism for a drawing frame according to claim 3, characterized in that: The linear motor (1) is arranged transversely above the gate-shaped outlet of the drawing frame, and corresponding photoelectric switches (8) are arranged on both sides of the gate-shaped outlet of the drawing frame.

5. A wire breaking mechanism for a drawing frame according to claim 4, characterized in that: The drawing frame is provided with a controller (9), and the linear motor (1), the drive motor (4), the micro switch (5) and the photoelectric switch (8) are all electrically connected to the controller (9).

6. A wire breaking mechanism for a drawing frame according to claim 1, characterized in that: The number of the linear motor (1) and the number of the shearing mechanisms are both two, and the two linear motors (1) and the two shearing mechanisms are both symmetrically arranged above the gate-shaped outlet in the drawing frame.

7. A drawing frame wire breaking mechanism according to claim 2, characterized in that: The sensing rod (6) is arranged between the two ends of the movable cutting blade (3).

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