Novel towel embroidery thread trimming control method

Abstract

The invention relates to a novel towel embroidery thread trimming control method which is applied to an embroidery machine comprising a towel needle bar, a machine needle and a D shaft, the machine needle is fixedly installed on the towel needle bar, the head of the machine needle is opened inwards to form a stroke hook shape to allow an embroidery thread to penetrate in and break away to form a stitch, and the D shaft is used for controlling directional rotation of the towel needle bar; the method comprises the following steps: step 1, controlling the rotation direction and the rotation angle of a D axis; 2, when the main shaft runs to 180 degrees, the D shaft is started to rotate, the vector value theta of the rotation angle is equal to the sum of the pattern stitch tangent angle Y and 180 degrees, and 230-degree rotation of the main shaft is completed; 3, the towel machine needle is driven by the main shaft to continue to move upwards to the parking space. 4, the shaft D runs to the original point, a machine needle high motor runs to the highest separation position, and thread trimming is completed. The problems of towel embroidery thick material laddering, unclean thread separation and the like during actual embroidery can be solved, the quality of embroidery products can be greatly improved, and the repair rate of workers to the embroidery products is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of embroidery machines and relates to a novel towel embroidery thread cutting control method. Background Art

[0002] Embroidery machines, also known as embroidery machines, are modern advanced embroidery machines that can achieve high speed and high efficiency in traditional hand embroidery, and can also achieve the requirements of "multi-level, multi-function, unity and perfection" that hand embroidery cannot achieve. It is a mechatronic product that embodies a variety of high-tech technologies.

[0003] An existing thread cutting method is to use a scissor head to cut the embroidery rope. Due to the wide scissor head, this mechanism cannot be effectively set under the machine head to accurately cut the embroidery rope. To cut the embroidery rope, the embroidery rope must be dragged or hooked to a suitable position in front of the scissor head manually, and then the scissor head is driven by a driving structure to feed and cut the thread, so that the embroidery rope can be cut. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems in the existing technology and propose a novel towel embroidery thread cutting control method to solve the problems of thick material thread drawing, thread derailment and uncleanness in towel embroidery.

[0005] The purpose of the present invention can be achieved through the following technical solutions: a new type of towel embroidery thread cutting control method, applied to an embroidery machine including a towel needle bar, a machine needle and a D axis, wherein the machine needle is fixedly mounted on the towel needle bar, the head of the machine needle is inwardly opened and hooked to allow the embroidery thread to penetrate and detach to form a stitch, and the D axis is used to control the direction of rotation of the towel needle bar; the method comprises: step 1: controlling the rotation direction and rotation angle of the D axis; step 2: starting the D axis rotation when the main shaft runs to 180 degrees, the rotation angle vector value θ is equal to the pattern stitch tangent angle γ+180 degrees, and the main shaft is rotated 230 degrees to complete; step 3: the towel needle continues to move upward to the parking position driven by the main shaft. Step 4: the D axis runs to the origin, the needle high motor runs to the highest disengagement position, and the thread cutting is completed.

[0006] In the above-mentioned novel towel embroidery thread cutting control method, it also includes a needle height preset module for presetting the working height of the towel machine needle to adjust the towel or chain stitch.

[0007] In the above-mentioned novel towel embroidery thread cutting control method, the machine head needle height motor is a servo or stepping motor that drives a driving rod to drive the thread hook of the thread hook mechanism on at least one machine head to perform corresponding actions.

[0008] In the above-mentioned new towel embroidery thread cutting control method, it also includes a thread presser foot and a return module; the thread presser foot module is also used to control the thread presser foot to move from the lower position to the upper position after the thread-like decorative part is cut off; the return module is used to control the thread scissors to return after the thread-like decorative part is cut off and the thread presser foot moves to the upper position; or, it is used to control the thread to return when the thread-like decorative part is cut off and the thread presser foot moves to the upper position.

[0009] In the above-mentioned novel towel embroidery thread trimming control method, after thread trimming, the towel needle bar is controlled to directly rise, so that the thread end is retained just above the towel.

[0010] Compared with the prior art, the present invention realizes intelligent control of the towel needle bar and the machine needle by improving the thread trimming control method, and trims the embroidery thread and the rope thread in an orderly manner to avoid accidental cutting. At the same time, it is used to solve the problems encountered in actual embroidery such as thread drawing, thread derailment and uncleanness caused by thick materials in towel embroidery. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0012] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0013] Example

[0014] like Figure 1 As shown, a novel towel embroidery thread trimming control method is applied to an embroidery machine including a towel needle bar, a machine needle and a D-axis. The machine needle is fixedly installed on the towel needle bar, and the head of the machine needle is inwardly opened and hooked to allow the embroidery thread to penetrate and detach to form a stitch. The D-axis is used to control the direction of rotation of the towel needle bar; the method includes: step 1: controlling the rotation direction and rotation angle of the D-axis; step 2: starting the D-axis rotation when the main shaft runs to 180 degrees, the rotation angle vector value θ is equal to the pattern stitch tangent angle γ+180 degrees, and the main shaft rotates 230 degrees to complete; step 3: the towel needle continues to move upward to the parking position driven by the main shaft. Step 4: the D-axis runs to the origin, and the needle high motor runs to the highest disengagement position to complete the thread trimming.

[0015] Furthermore, it also includes a needle height preset module for presetting the working height of the towel machine needle to adjust the towel or chain stitch.

[0016] Furthermore, the machine head needle height motor is a servo or stepper motor that drives a driving rod to drive the wire hook of at least one wire hook mechanism on the machine head to perform corresponding actions.

[0017] Furthermore, it also includes a rope presser foot and a return module; the rope presser foot module is also used to control the rope presser foot to move from a lower position to an upper position after the rope-like decorative part is cut off; the return module is used to control the rope scissors to return after the rope-like decorative part is cut off and the rope presser foot moves to the upper position; or, it is used to control the rope to return when the rope-like decorative part is cut off and the rope presser foot moves to the upper position.

[0018] Furthermore, after the thread is trimmed, the towel needle bar is controlled to be lifted directly to keep the thread end just above the towel.

[0019] The present invention realizes intelligent control of the towel needle bar and the machine needle by improving the thread trimming control method, and performs orderly thread trimming of embroidery threads and rope threads to avoid mistaken cutting. At the same time, it is used to solve the problems of thick material drawing, thread derailment and uncleanness in towel embroidery during actual embroidery, such as.

[0020] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A novel towel embroidery thread trimming control method, applied to an embroidery machine including a towel needle bar, a machine needle and a D-axis, wherein the machine needle is fixedly mounted on the towel needle bar, the head of the machine needle is inwardly opened and hooked to allow the embroidery thread to penetrate and detach to form a stitch, and the D-axis is used to control the direction of rotation of the towel needle bar; the method comprises: Step 1: Control the rotation direction and angle of the D-axis; Step 2: When the spindle runs to 180 degrees, start the D-axis rotation. The rotation angle vector value θ is equal to the pattern stitch tangent angle γ+180 degrees. The spindle completes a 230-degree rotation. Step 3: Driven by the main shaft, the towel machine needle continues to move upward to the parking position. Step 4: The D axis moves to the origin, and the needle high motor moves to the highest disengagement position to complete the thread trimming.

2. A novel towel embroidery thread trimming control method according to claim 1, characterized in that: It also includes a needle height preset module for pre-setting the working height of the towel machine needle for adjusting towel or chain stitches.

3. A novel towel embroidery thread trimming control method according to claim 1, characterized in that: The machine head needle height motor is a servo or stepper motor that drives a driving rod to drive the wire hook of at least one wire hook mechanism on the machine head to perform corresponding actions.

4. A novel towel embroidery thread trimming control method according to claim 1, characterized in that: It also includes a rope presser foot and a return module; the rope presser foot module is also used to control the rope presser foot to move from a lower position to an upper position after the rope-like decorative part is cut off; the return module is used to control the rope scissors to return after the rope-like decorative part is cut off and the rope presser foot moves to the upper position; or, it is used to control the rope to return when the rope-like decorative part is cut off and the rope presser foot moves to the upper position.

5. The novel towel embroidery thread trimming control method according to claim 1 is characterized in that: After thread trimming, control the towel needle bar to lift directly to keep the thread end just above the towel.

Images