A kangaroo pouch sewing control method

Abstract

A kind of kangaroo bag sewing control method, including bagging machine and the head of being arranged on bagging machine, including the recognition device installed on the head;The recognition device includes the sensor arranged around the needle of the head, and the sensor detection point is formed with horizontal interval L between the needle of the head;The bagging machine includes the following steps in the process of using:new pattern, adjust sensor position, move along the predetermined track with material handling device;Compared with prior art, by setting the sensor around the head, the moving position of material handling device is started and stopped under the action of sensor, so that the specific size of actual existence differentiated bag opening can be identified by sensor, so as to realize accurate sewing to the bag opening of previous process roll, reduce the generation of defective products.

Description

Technical Field

[0001] This invention relates to the field of kangaroo pouch sewing technology, and more specifically to a method for controlling the sewing of kangaroo pouches. Background Technology

[0002] A kangaroo pouch is a type of pocket sewn onto clothing. This pocket is typically much larger than the pockets on most trousers, coats, or shirts. Large enough to fit both hands inside, this type of pocket is also known as a hooded pocket or hoodie pocket. It is located at the front, bottom, or back of a shirt and resembles a kangaroo's marsupial or pouch. Stylistically, this type of pocket is often associated with casual wear, such as sweatshirts or simple cotton jumpsuits.

[0003] Currently, automatic kangaroo pouch sewing involves automatically folding the kangaroo pouch on a worktable using a folding device, automatically transferring the material, and then automatically sewing it around the machine head according to a predetermined program.

[0004] However, in actual use, kangaroo pouches are not made to standard. Due to the elasticity of the fabric, the rebound after the previous hemming process is inconsistent, leading to problems in each sewing process. Figure 4 As shown, the dimensions of A, B, and C are not equal, which leads to differences in the dimensions of pockets A, B, and C after being folded by the automatic folding device, and these differences are not regular.

[0005] Because kangaroo pouches are sewn in only three sections (A, B, and C), and can be sewn with single or double thread, the pre-set sewing program on the touchscreen remains unchanged during the automatic sewing process. If the sewing length of the programmed section is greater than A, B, or C, the thread will extend beyond A, B, or C; if the sewing length of the programmed section is less than A, B, or C, the thread will not be able to completely fill in A, B, or C. Both of these situations will result in defective products, thus affecting the aesthetics and practicality of the kangaroo pouch. Summary of the Invention

[0006] The present invention aims to overcome the defects in the prior art and provide a kangaroo pouch sewing control method that has high sewing efficiency and avoids differences in the pouch opening.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A method for controlling the sewing of kangaroo pouches includes a patching machine and a machine head mounted on the patching machine. The machine head is equipped with an identification device. The identification device includes a sensor positioned around a needle on the machine head, with a horizontal distance L between the sensor detection point and the needle. The patching machine, during operation, includes the following steps: Step A: Create a new pattern, and form the required A-segment line, B-segment line, and C-segment line according to the three pattern segments. Then, divide the A-segment line, B-segment line, and C-segment line into individual sewing points according to the set needle distance, and transmit them to the control unit of the patching machine. Step B: Move the material feeding device under the action of the XY axis to the starting position of the required sewing line segment at the machine head. According to the angle formed by the straight line formed by the current coordinates and the coordinates of the next few points of the line segment and the horizontal direction, control the sensor to rotate around the needle by a corresponding angle so that the sensor is rotated to the front of the required moving direction of the material feeding device. Step C: Move the material feeding device along the predetermined trajectory. When the sensor detects the pocket fabric, it outputs a signal to the control unit. The control unit controls the material feeding device to skip a distance L in the forward direction, and then controls the sewing head to start sewing. Step D: The material conveying device moves along the predetermined trajectory. When the sensor detects that there is no pocket fabric, it stops outputting a signal to the control unit. After receiving the feedback, the control unit controls the material conveying device to continue sewing a distance L along the forward direction, and then controls the sewing head to stop sewing. Step E: Repeat steps BD to sew line segments A, B, and C in sequence to complete the outer ring sewing.

[0008] As a preferred embodiment of the present invention, the sensor is equipped with a smoothing air nozzle that rotates synchronously with the sensor.

[0009] In a preferred embodiment of the present invention, the A-segment thread, B-segment thread, and C-segment thread are in a blowing state during the sewing process, with the air nozzle smoothed out.

[0010] As a preferred embodiment of the present invention, the machine head is provided with two X-axis feeding sections, both of which have locking functions. The locking function is closed after the two X-axis sections pick up the material, and the locking function is opened after the material is picked up and returned.

[0011] As a preferred embodiment of the present invention, after completing the section, the material conveying device in step D performs empty conveying to the beginning of the next section under the action of the XY axis.

[0012] In a preferred embodiment of the present invention, after the material conveying device in step D delivers the material to the beginning of the next segment, the control unit controls the sensor to rotate a differential angle based on the angle formed by the straight line formed by the current coordinates and the coordinates of the next few points of the line segment and the horizontal direction. This causes the sensor to rotate to the front of the direction the material conveying device needs to move in. The differential angle is the angle by which the sensor rotates around the needle, as mentioned above. In a preferred embodiment of the present invention, the sensor rotation differential angle is the angle formed by subtracting the previous horizontal angle from the current horizontal angle.

[0013] As a preferred embodiment of the present invention, the sensor rotation difference angle rotates in the same direction according to the positive difference between the current horizontal angle and the previous horizontal angle, and rotates in the opposite direction according to the negative difference.

[0014] As a preferred embodiment of the present invention, after the outer ring is sewn in step E, the material conveying device is sent back to the origin empty, and then the material receiving program is connected to receive the material.

[0015] As a preferred embodiment of the present invention, after the outer ring is sewn in step E, there is a shrinking command. The control unit controls the outer pressure plate to remain stationary, while the inner pressure plate lifts up the shrinking plate and then lowers it to complete the shrinking process.

[0016] As a preferred embodiment of the present invention, it further includes step F: repeating step E to complete the inner circle sewing.

[0017] Compared with the prior art, the beneficial effects of the present invention are: by setting a sensor around the machine head, the movement position of the material feeding device is started and stopped under the action of the sensor, so that the specific size of the bag opening with different dimensions can be identified by the sensor, thereby realizing accurate sewing of the bag opening after the previous process is rolled, reducing the generation of defective products. Attached Figure Description

[0018] Figure 1 This is a flowchart of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a wiring diagram of the machine head; Figure 4 This is a diagram illustrating the sewing process of a kangaroo pouch; Reference numerals: Head 1, Identification device 2. Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0020] like Figures 1-4 As shown, a kangaroo pouch sewing control method includes a patching machine and a machine head 1 set on the patching machine. The machine head 1 is equipped with an identification device 2. The identification device 2 includes a sensor arranged around the needle of the machine head 1, and a horizontal distance L is formed between the sensor detection point and the needle of the machine head 1.

[0021] The sensor is equipped with a smoothing air nozzle that rotates synchronously with the sensor. The air blowing position of the smoothing air nozzle is the same as the detection point position of the sensor, and the smoothing air nozzle is equipped with a valve for controlling the air blowing volume.

[0022] The machine head 1 is equipped with two X-axis feeding sections, which extends the movement range of the X-axis. Both X-axis sections have a locking function. The locking function is closed after the material is picked up by the two X-axis sections, and the locking function is opened after the material is picked up and returned, thus avoiding sewing instability caused by excessive X-axis cantilever.

[0023] The sensor identifies the position of the material conveying device in real time and outputs a feedback signal, which is then transmitted as input to the control unit of the bag-sticking machine.

[0024] The bag-applying machine of this application includes the following steps during use: Step A: Create a new pattern. When creating a new pattern, the pattern length needs to be greater than the distance X at the beginning and end of the three segments A, B, and C.

[0025] Based on the three pattern sections, the required A-section line, B-section line, and C-section line are formed, and the A-section line, B-section line, and C-section line are distributed into individual sewing points according to the set needle distance. The spacing and number of sewing points are designed according to the actual situation and transmitted to the control unit of the patching machine.

[0026] Step B: Move the material feeding device to the starting position of the required sewing line segment under the action of the XY axis. According to the angle formed by the straight line formed by the current coordinates and the coordinates of the next few points of the line segment and the horizontal direction, control the sensor to rotate around the needle by a corresponding angle so that the sensor is rotated to the front of the required moving direction of the material feeding device. At the same time, smooth the air nozzle and start blowing air.

[0027] When sewing section A is required, the material feeding device moves to the end of section A under the action of the XY axis. The angle formed by the straight line formed by the current coordinate and the coordinates of several points after section A and the horizontal direction (e.g.) Figure 4 (α angle), and control the sensor to rotate by the corresponding angle. At this time, the straight line where the sensor and the machine head 1 are located is the same as the straight line where the A segment to be sewn is located.

[0028] Step C: Move the material conveying device along the predetermined trajectory. When the sensor detects the pocket fabric, it outputs a signal to the control unit. The control unit controls the material conveying device to skip a distance L in the forward direction, and then controls the sewing head 1 to start sewing. During the sewing process, the smoothing air nozzle is in the air blowing state.

[0029] When the sensor detects the pocket fabric, since there is still a horizontal distance L between the needle of the machine head 1 and the pocket fabric, the control unit controls the feeding device to skip the distance L along the forward direction, ensuring that the needle starts sewing at the point where the sensor first detects the pocket fabric.

[0030] Step D: The material conveying device moves along the predetermined trajectory. When the sensor detects that there is no pocket fabric, it stops outputting a signal to the control unit. After receiving the feedback, the control unit controls the material conveying device to continue sewing a distance L along the forward direction, and then controls the sewing head 1 to stop sewing.

[0031] When the sensor detects that there is no pocket fabric, since there is still a horizontal distance L between the needle of the sewing head 1 and the pocket fabric, the control unit controls the feeding device to continue sewing along the forward direction for a distance L after receiving feedback, so as to ensure that the needle stops sewing after the sensor finally detects the pocket fabric.

[0032] After completing a section, the material conveying device performs empty delivery to the starting point of the next section under the action of the XY axis. After the material conveying device is delivered to the starting point of the next section, the control unit controls the sensor to rotate the differential angle based on the angle formed by the straight line formed by the current coordinates and the coordinates of the next few points of the line segment and the horizontal direction, so that the sensor rotates to the front of the direction of movement required by the material conveying device.

[0033] The sensor rotation difference angle is the angle formed by subtracting the horizontal angle after the previous rotation from the current horizontal angle. The sensor rotation difference angle rotates in the same direction according to the positive difference between the current horizontal angle and the previous horizontal angle, and rotates in the opposite direction according to the negative difference.

[0034] Step E: When completing line segment A and needing to sew line segment B, the material feeding device moves to the end of line segment B under the action of the XY axis. The angle formed by the straight line formed by the current coordinate and the coordinates of several points on line segment B and the horizontal direction (e.g., Figure 4 At this point, the B segment line is set horizontally (the B segment line forms a 0° angle with the horizontal direction), and the sensor is controlled to rotate by the corresponding angle, controlling the sensor to rotate (0-α)°. At this time, the straight line where the sensor and the machine head 1 are located is the same as the straight line where the B segment line to be sewn is located.

[0035] The material conveying device moves along a predetermined trajectory. When the sensor detects the pocket fabric, it outputs a signal to the control unit. The control unit controls the material conveying device to skip a distance L in the forward direction, and then controls the sewing head 1 to start sewing. During the sewing process, the smoothing air nozzle is in the air blowing state.

[0036] When the sensor detects the pocket fabric, since there is still a horizontal distance L between the needle of the machine head 1 and the pocket fabric, the control unit controls the feeding device to skip the distance L along the forward direction, ensuring that the needle starts sewing at the point where the sensor first detects the pocket fabric.

[0037] The material conveying device moves along a predetermined trajectory. When the sensor detects that there is no pocket fabric, it stops outputting a signal to the control unit. After receiving the feedback, the control unit controls the material conveying device to continue sewing a distance L in the forward direction, and then controls the sewing head 1 to stop sewing.

[0038] When the sensor detects that there is no pocket fabric, since there is still a horizontal distance L between the needle of the sewing head 1 and the pocket fabric, the control unit controls the feeding device to continue sewing along the forward direction for a distance L after receiving feedback, so as to ensure that the needle stops sewing after the sensor finally detects the pocket fabric.

[0039] When section B is completed and section C needs to be sewn, the material feeding device moves to the end of section C under the action of the XY axis. The angle formed by the straight line formed by the current coordinate and the coordinates of several points after section C and the horizontal direction (e.g., Figure 4(β angle), and control the sensor to rotate by the corresponding angle, control the sensor to rotate (β-0)°, at this time the straight line where the sensor and the machine head 1 are located is the same as the straight line where the C segment to be sewn is located.

[0040] The material conveying device moves along a predetermined trajectory. When the sensor detects the pocket fabric, it outputs a signal to the control unit. The control unit controls the material conveying device to skip a distance L in the forward direction, and then controls the sewing head 1 to start sewing. During the sewing process, the smoothing air nozzle is in the air blowing state.

[0041] When the sensor detects the pocket fabric, since there is still a horizontal distance L between the needle of the machine head 1 and the pocket fabric, the control unit controls the feeding device to skip the distance L along the forward direction, ensuring that the needle starts sewing at the point where the sensor first detects the pocket fabric.

[0042] The material conveying device moves along a predetermined trajectory. When the sensor detects that there is no pocket fabric, it stops outputting a signal to the control unit. After receiving the feedback, the control unit controls the material conveying device to continue sewing a distance L in the forward direction, and then controls the sewing head 1 to stop sewing.

[0043] When the sensor detects that there is no pocket fabric, since there is still a horizontal distance L between the needle of the sewing head 1 and the pocket fabric, the control unit controls the feeding device to continue sewing along the forward direction for a distance L after receiving feedback, so as to ensure that the needle stops sewing after the sensor finally detects the pocket fabric.

[0044] Sewing sections A, B, and C in sequence completes the outer circumference stitching.

[0045] After the outer ring is sewn, there is no further program segment. The material conveying device is sent back to the origin empty, the air blowing nozzle is closed, and then the material receiving program is connected to receive the material.

[0046] If there is a shrinking command after the outer ring is sewn, the control unit keeps the outer pressure plate stationary, while the inner pressure plate lifts up the shrinking plate and then lowers it to complete the shrinking process.

[0047] The material conveying device will then be transported along a predetermined trajectory to the starting point of the inner ring under the action of the XY axes.

[0048] Step F: Repeat step E to complete the inner circle sewing.

[0049] Of course, the machine head 1 can also be the machine head of a double-needle machine, which can complete the sewing of the inner and outer circles at the same time, so step F is not required.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention; therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0051] Although this document frequently uses reference numerals such as "head unit 1" and "identification device 2" in the figures, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A method for controlling the sewing of kangaroo pouches, comprising a patching machine and a sewing head (1) mounted on the patching machine, characterized in that, The machine head (1) is equipped with an identification device (2); the identification device (2) includes a sensor arranged around the needle of the machine head (1), and a horizontal distance L is formed between the sensor detection point and the needle of the machine head (1); the bag-applying machine includes the following steps during use: Step A: Create a new pattern, and form the required A-segment line, B-segment line, and C-segment line according to the three pattern segments. Then, divide the A-segment line, B-segment line, and C-segment line into individual sewing points according to the set needle distance, and transmit them to the control unit of the patching machine. When creating a new pattern, the pattern length needs to be greater than the distance X at the beginning and end of the three segments A, B, and C. Step B: Move the material feeding device under the action of the XY axis to the starting position of the required sewing line segment located at the head (1). According to the angle formed by the straight line formed by the current coordinates and the coordinates of the next few points of the line segment and the horizontal direction, control the sensor to rotate around the needle by the corresponding angle so that the sensor rotates to the front of the required moving direction of the material feeding device. The sensor rotation difference angle is the angle formed by subtracting the horizontal angle after the previous rotation from the current horizontal angle. The sensor rotation difference angle rotates in the same direction according to the positive difference between the current horizontal angle and the previous horizontal angle, and rotates in the opposite direction according to the negative difference. Step C: Move the material conveying device along the predetermined trajectory. When the sensor detects the pocket cloth, it outputs a signal to the control unit. The control unit controls the material conveying device to skip a distance L in the forward direction and then controls the sewing head (1) to start sewing. When the sensor detects the pocket cloth, since there is still a horizontal distance L between the needle of the machine head (1) and the pocket cloth, the control unit controls the material feeding device to skip the distance L along the forward direction to ensure that the needle starts sewing at the place where the sensor first detects the pocket cloth. Step D: The material conveying device moves along the predetermined trajectory. When the sensor detects that there is no pocket cloth, it stops outputting a signal to the control unit. After receiving the feedback, the control unit controls the material conveying device to continue sewing a distance L along the forward direction, and then controls the machine head (1) to stop sewing. When the sensor detects that there is no pocket cloth, since there is still a horizontal distance L between the needle of the machine head (1) and the pocket cloth, after the control unit receives the feedback, it controls the feeding device to continue sewing along the forward direction for a distance L, so as to ensure that the needle stops sewing after the sensor finally detects the pocket cloth; after the feeding device (1) completes the segment line, it performs empty feeding to the beginning of the next segment under the action of the XY axis. After the feeding device (1) is empty fed to the beginning of the next segment, the control unit controls the sensor to rotate the difference angle according to the current coordinates and the angle formed by the straight line formed by the coordinates of the next few points of the segment line and the horizontal direction, so that the sensor rotates to the front of the machine head (1) in the required moving direction; Step E: Repeat steps BD to sew line segments A, B, and C in sequence to complete the outer ring sewing.

2. The method for controlling the sewing of a kangaroo pouch according to claim 1, characterized in that, The sensor is equipped with a smoothing air nozzle that rotates synchronously with the sensor.

3. The method for controlling the sewing of a kangaroo pouch according to claim 2, characterized in that, During the sewing process, the air nozzles of the A, B, and C segments are in a blowing state.

4. The method for controlling the sewing of a kangaroo pouch according to claim 1, characterized in that, The machine head (1) is equipped with two X-axis feeding sections. Both X-axis sections have locking functions. The locking function is closed after the two X-axis sections take the material and is opened after the material is returned.

5. The method for controlling the sewing of a kangaroo pouch according to claim 1, characterized in that, After the outer ring of step E is sewn, the material transport device (1) returns to the origin empty and then connects to the material receiving program to receive the material.

6. The method for controlling the sewing of a kangaroo pouch according to claim 1, characterized in that, After the outer ring is sewn in step E, there is a shrinking command. The control unit keeps the outer pressure plate stationary, while the inner pressure plate lifts up and then lowers to complete the shrinking process.

7. The method for controlling the sewing of a kangaroo pouch according to claim 1, characterized in that, It also includes step F: Repeat step E to complete the inner circle sewing.

Images