Method for preventing bird nest through intelligent monitoring and control

Abstract

The invention discloses an intelligent monitoring and control bird nest prevention method which comprises a machine head, the machine head is provided with a thread supply quantity detection sensor, a bird nest prevention assembly and a bird nest prevention control device, and the bird nest prevention action of a sewing machine is achieved through the thread supply quantity detection sensor, the bird nest prevention assembly and the bird nest prevention control device. The occurrence of bird nest thread balls in the sewing process and the condition of needle breaking during sewing are reduced, so that the sewing quality in the sewing process is ensured; the thread return part and the thread clamping part are matched to ensure the tension of the upper thread when the upper thread is taken up, so that the take-up quantity of the thread return part is ensured, and the take-up precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewing machines, and in particular to a method for intelligent monitoring and control to prevent bird nests. Background Art

[0002] A sewing machine is a machine that uses sewing thread to form one or more stitches on the fabric to be sewn, so that one or more layers of fabric are interwoven or sewn together.

[0003] When existing sewing machines are used to sew various sewing materials together or for decorative sewing, the thread ends are too long, which easily forms entanglement nests and affects the quality of clothes. Summary of the Invention

[0004] Existing bird nest prevention methods have problems such as uncontrolled thread length on the remaining sewing material and the need to clean up the cut thread. The present invention aims to provide an intelligent monitoring and control method for preventing bird nests to solve the above problems.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a method for intelligent monitoring and control to prevent bird nests, comprising a machine head, the machine head being provided with a wire supply amount detection sensor, an anti-bird nest component, and an anti-bird nest control device, performing the following steps: S1: The thread supply detection sensor detects the thread supply length of the upper thread or directly detects the thread end length, and sends the detected thread end length to the anti-bird nest control device; S2: The anti-bird nest control device analyzes the supply line length or directly detects the line length data, and controls the anti-bird nest component to adjust the line amount according to the analyzed line length data. The anti-bird nest component receives at least one signal from the anti-bird nest control device to adjust the line amount until The line detection sensor detects If the length of the thread ends meets the set standard, the anti-bird nest component will stop the anti-bird nest action.

[0006] Furthermore, the wire supply amount detection sensor is an optical sensor; or, the wire supply amount detection sensor is a contact displacement sensing sensor.

[0007] Furthermore, the anti-bird nest component includes a thread end length adjustment mechanism, and the thread end length adjustment structure is used to adjust the thread end length of the surface thread.

[0008] Furthermore, the thread end length adjustment mechanism includes a wire return portion, which includes a wire take-up motor. The wire take-up motor controls its own rotation angle to achieve a wire return action.

[0009] Furthermore, the wire return portion further comprises a wire clamping portion, which is used to clamp the front end of the surface wire when the wire take-up motor performs a wire return action.

[0010] The beneficial technical effects of the present invention are as follows: the anti-bird nest action of the sewing machine is realized by the thread supply amount detection sensor, the anti-bird nest component and the anti-bird nest control device, thereby reducing the occurrence of bird nest thread balls and the situation of broken needles during sewing, thereby ensuring the sewing quality during the sewing process; by returning the thread instead of cutting the thread end, the waste of thread is eliminated and the trouble of thread end processing is reduced; by monitoring the thread end length through the thread supply amount detection sensor, and cooperating with the thread return part and the thread clamping part to ensure the surface thread tension when winding the thread, the thread winding amount of the thread return part is guaranteed, and the thread winding accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the overall structural control framework diagram of the present invention; Figure 2 This is a framework diagram for directly detecting the length of thread ends of the present invention; Figure 3 This is a framework diagram of the thread length adjustment mechanism of the present invention.

[0012] Figure numerals: 1. Wire supply amount detection sensor; 2. Anti-bird nest control device; 3. Anti-bird nest assembly; 4. Wire end length adjustment mechanism; 41. Wire clamping part; 42. Return line part; 421. Return line motor. DETAILED DESCRIPTION

[0013] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0014] Example 1, reference Figure 1 As shown, a method for intelligent monitoring and control to prevent bird nests is provided, including a head, the head is provided with a line supply amount detection sensor, an anti-bird nest component and an anti-bird nest control device, and performs the following steps: S1: The thread supply detection sensor detects the thread supply length of the upper thread or directly detects the thread end length, and sends the detected thread end length to the anti-bird nest control device; S2: The anti-bird nest control device analyzes the supply line length or directly detects the line head length data, and controls the anti-bird nest component to adjust the line amount according to the analyzed line head length data. The anti-bird nest component receives at least one signal from the anti-bird nest control device to adjust the line amount until the line amount detection sensor detects that the line head length meets the set standard. The line head length meeting the set standard is a preset value pre-set in the anti-bird nest control device, and the anti-bird nest component stops the anti-bird nest operation.

[0015] The supply length of the upper thread mentioned in the above method or the direct detection of the thread end length is specifically explained as follows: for example, after the sewing action is completed, the sewing machine controls its own thread trimming mechanism to trim the upper thread. At this time, the length of the upper thread after trimming is 35mm, and the 0-5mm left on the fabric itself. Therefore, the length of the upper thread after trimming is 35mm-40mm. When the thread supply detection sensor detects that the length of the upper thread after trimming is 35mm-40mm, the length of the upper thread is fed back to the anti-bird nest control device, and the anti-bird nest component is controlled to perform an anti-bird nest action, and the upper thread with a length of 35mm-40mm after trimming is adjusted until the thread detection sensor detects that the thread end length meets the set standard, and the anti-bird nest component stops this operation.

[0016] The present invention realizes the anti-bird nest action of the sewing machine through a thread supply amount detection sensor, an anti-bird nest component and an anti-bird nest control device, reduces the occurrence of bird nest thread balls and the situation of needle breakage during sewing, thereby ensuring the sewing quality during the sewing process.

[0017] The wire supply amount detection sensor is an optical sensor; or, the wire supply amount detection sensor is a contact displacement sensing sensor.

[0018] In this embodiment, the thread supply amount detection sensor is an optical sensor, which is used to obtain the thread supply length of the upper thread or directly detect the thread end length of the upper thread, and send the data to the anti-bird's nest control device. The anti-bird's nest control device controls the anti-bird's nest component to adjust the thread amount until the optical sensor detects that the thread supply length of the upper thread or directly detects that the thread end length of the upper thread reaches the set standard, which is a preset value pre-set in the anti-bird's nest control device.

[0019] The anti-bird's nest component includes a thread end length adjustment mechanism, which is used to adjust the thread end length of the surface thread. The thread end length adjustment mechanism includes a line return part and a line clamping part. The line return part includes a line take-up motor. The line take-up motor controls its own rotation angle to realize the line return action. The line clamping part is used to clamp the surface thread when the line take-up motor realizes the line return action. In this embodiment, the rotation stage of the line take-up motor controlling itself to realize the line return action is the line cutting stage, or between 0°~20° for starting the seam, or between 300°~380°, or between 660°~740° subsequently. The purpose is to perform appropriate line return in the relaxed state of the line at the rear end of the line return device. At the same time, when the line take-up motor starts to take up the line, the line clamping part clamps the surface thread to ensure the surface thread tension when the line take-up motor takes up the line, thereby ensuring the line take-up amount of the line take-up motor and improving the line take-up accuracy.

[0020] In this embodiment, the anti-bird's nest action of the sewing machine is realized by a thread supply amount detection sensor, an anti-bird's nest component and an anti-bird's nest control device, thereby reducing the occurrence of bird's nest thread balls and broken needles during sewing, thereby ensuring the sewing quality during the sewing process; the thread return part and the thread clamping part are coordinated to ensure the surface thread tension when winding the thread, thereby ensuring the thread winding amount of the thread return part and improving the thread winding accuracy.

[0021] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for intelligent monitoring and control to prevent bird nests, comprising a machine head, characterized in that: The machine head is provided with a line supply amount detection sensor, an anti-bird nest component and an anti-bird nest control device, and performs the following steps: S1: The thread supply detection sensor detects the thread supply length of the upper thread or directly detects the thread end length, and sends the detected thread end length to the anti-bird nest control device; S2: The anti-bird nest control device analyzes the supply line length or directly detects the line end length data, and controls the anti-bird nest component to adjust the line amount according to the analyzed line end length data. The anti-bird nest component receives at least one signal from the anti-bird nest control device to adjust the line amount until the line amount detection sensor detects that the line end length meets the set standard, and the anti-bird nest component stops the anti-bird nest action.

2. The method of intelligent monitoring and control to prevent bird nests according to claim 1, characterized in that: The wire supply amount detection sensor is an optical sensor; or, the wire supply amount detection sensor is a contact displacement sensing sensor.

3. The method of intelligent monitoring and control to prevent bird nests according to claim 1, characterized in that: The anti-bird nest component includes a thread end length adjustment mechanism, and the thread end length adjustment structure is used to adjust the thread end length of the upper thread.

4. The method of intelligent monitoring and control to prevent bird nests according to claim 3, characterized in that: The wire end length adjustment mechanism includes a wire return portion, and the wire return portion includes a wire take-up motor. The wire take-up motor controls its own rotation angle to achieve a wire return action.

5. The method of intelligent monitoring and control to prevent bird nests according to claim 4, characterized in that: The line return portion further comprises a line clamping portion, which is used to clamp the front end of the surface line when the line take-up motor performs a line return action.

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