A needle control method for embroidery machine

Abstract

The present invention discloses a needle control method for an embroidery machine, the needle control method comprising: when embroidering the Nth needle, obtaining the thread hooking direction of the loop shuttle, N being a positive integer; the embroidering the Nth needle comprises a first process, in which the needle is controlled to rotate in a first direction according to the thread hooking direction, the first direction being opposite to the thread hooking direction; wherein the first process comprises a first limit starting point and a first limit end point, the first limit starting point is when the needle moves downward and the thread hooking part of the needle enters the needle drop hole of the loop shuttle, and the first limit end point is when the needle moves upward and the thread hooking part of the needle leaves the needle drop hole of the loop shuttle. Under the premise that the rotation angle of the loop shuttle remains unchanged, the needle rotates in the opposite direction of the rotation of the loop shuttle, which is equivalent to increasing the rotation angle of the loop shuttle, so that each embroidery needle can accurately hook the embroidery thread, greatly improving the probability of the thread hooking part of the needle hooking the embroidery thread.

Description

Technical Field

[0001] The invention relates to the technical field of computer embroidery machines, in particular to a needle control method of an embroidery machine. Background Art

[0002] In the prior art, the process of hooking the thread of the machine needle is as follows: the machine needle on the machine head passes through the needle hole of the needle plate, enters the needle drop hole of the loop shuttle, and then the machine needle moves upward. In this process, the machine needle cooperates with the loop shuttle to enable the hooking part of the machine needle to hook the embroidery thread.

[0003] However, in the above-mentioned needle hooking process, there is a situation where the embroidery thread may not be hooked on the needle hooking part, thereby affecting the embroidery effect. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a needle control method for an embroidery machine, which greatly improves the probability that the thread hooking part of the needle hooks the embroidery thread.

[0005] The needle control method according to the embodiment of the first aspect of the present invention comprises:

[0006] When embroidering the Nth stitch, obtain the hooking direction of the shuttle, where N is a positive integer;

[0007] The embroidery of the Nth needle includes a first process, in which the needle is controlled to rotate in a first direction according to the hooking direction, and the first direction is opposite to the hooking direction;

[0008] Among them, the first process includes a first extreme starting point and a first extreme end point, the first extreme starting point is that the machine needle moves downward and the thread hooking part of the machine needle enters the needle drop hole of the loop shuttle, and the first extreme end point is that the machine needle moves upward and the thread hooking part of the machine needle leaves the needle drop hole of the loop shuttle.

[0009] According to an embodiment of the present invention, under the premise that the rotation angle of the shuttle remains unchanged, the needle rotates in the opposite direction of the shuttle, which is equivalent to increasing the rotation angle of the shuttle, so that each stitch can accurately hook the embroidery thread, greatly improving the probability of the thread hooking part of the needle hooking the embroidery thread and avoiding extending the thread hooking time.

[0010] According to some embodiments of the present invention, between the first limit starting point and the first limit end point, a first starting point and a first end point are optionally selected, and the first starting point and the first end point form a sub-first process. In the sub-first process, the needle is controlled to rotate in the first direction according to the hooking direction.

[0011] According to some embodiments of the present invention, the steps further include:

[0012] The embroidery of the Nth needle also includes a second process, in which the needle is controlled to rotate in a second direction according to the hooking direction, and the second direction is the same as the hooking direction.

[0013] Among them, the second process includes a second extreme starting point and a second extreme end point, the second extreme starting point is that the machine needle moves upward and the needle tip of the machine needle leaves the needle hole of the needle plate, and the second extreme end point is that the machine needle moves upward and the machine needle reaches its working position.

[0014] According to some embodiments of the present invention, in the first process, the machine needle rotates by a preset angle α along the first direction; in the second process, the machine needle rotates by the preset angle α along the second direction.

[0015] According to some embodiments of the present invention, the preset angle α is an acute angle.

[0016] According to some embodiments of the present invention, between the second limit starting point and the second limit end point, a second starting point and a second end point are optionally selected, and the second starting point and the second end point form a sub-second process. In the sub-second process, the machine needle is controlled to rotate in the second direction according to the first direction.

[0017] An embroidery machine according to an embodiment of the second aspect of the present invention comprises a storage device and a processor, wherein the storage device is used to store a computer program, and the processor runs the computer program to enable the embroidery machine to execute the needle control method of the embroidery machine in the first aspect.

[0018] According to the computer-readable storage medium of the embodiment of the third aspect of the present invention, a computer program is stored on the storage medium, and when the computer program is executed by a processor, the needle control method of the embroidery machine in the first aspect is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a flow chart of a needle control method of an embroidery machine according to an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of needle movement according to an embodiment of the present invention Figure 1 ;

[0021] Figure 3 yes Figure 2 A partial enlarged schematic diagram of

[0022] Figure 4 Schematic diagram of needle movement according to an embodiment of the present invention Figure 2 ;

[0023] Figure 5 Schematic diagram of needle movement according to an embodiment of the present invention Figure 3 ;

[0024] Figure 6 yes Figure 5 A partial enlarged schematic diagram B;

[0025] Figure 7 Schematic diagram of needle movement according to an embodiment of the present invention Figure 4 ;

[0026] Figure 8 yes Figure 7 A partial enlarged schematic diagram C;

[0027] Fig. 9 Schematic diagram of needle movement according to an embodiment of the present invention Figure 5 ;

[0028] Fig.10 is a schematic diagram of a machine needle at a first limit starting point (or a second limit end point) according to an embodiment of the present invention;

[0029] Fig.11 is a schematic diagram of a machine needle at a first limit end point (or a second limit starting point) according to an embodiment of the present invention;

[0030] Fig.12 is a structural schematic diagram of a needle control system of an embroidery machine according to an embodiment of the present invention;

[0031] Fig.13 is a schematic structural diagram of an embroidery machine according to an embodiment of the present invention;

[0032] Reference numerals:

[0033] Needle 10, thread hook part 11, upper edge 111, lower edge 112,

[0034] Needle plate 20, needle hole 21, upper opening 211,

[0035] Table 30, thread trimming mechanism 40,

[0036] Circular shuttle 50 , needle drop hole 51 , upper opening 511 . DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The computer embroidery machine includes a machine head, a loop shuttle 50, a table 30, a thread trimming mechanism 40, an embroidery frame and a frame. The frame includes a main beam and a lower frame arranged above and below, a plurality of machine heads are mounted on the main beam, a plurality of loop shuttles 50 are mounted on the lower frame, and the machine heads and the loop shuttles 50 are arranged one by one. The machine heads cooperate with the loop shuttle 50 to complete the embroidery operation.

[0039] The table 30 is arranged on the lower frame, and the embroidery frame is located on the table 30. The embroidery frame moves on the table 30 along the X direction and the Y direction. The embroidery frame is used to fix the embroidery fabric. Among them, the needle plate 20 and the thread trimming mechanism 40 are arranged between the machine head and the shuttle 50. The machine head, the needle plate 20, the thread trimming mechanism 40 and the shuttle 50 are arranged in sequence from top to bottom.

[0040] In the prior art, the thread hooking process of the needle 10 is as follows: the needle 10 on the machine head passes through the needle hole 21 of the needle plate 20, enters the needle drop hole 51 of the loop shuttle 50, and then the needle 10 moves upward. In this process, the needle 10 cooperates with the loop shuttle 50 to enable the thread hooking part 11 of the needle 10 to hook the embroidery thread.

[0041] However, in the above-mentioned thread hooking process of the machine needle 10, there is a situation where the embroidery thread may not be hooked on the thread hooking part 11 of the machine needle 10, thereby affecting the embroidery effect.

[0042] Based on this, the present application proposes a control method for the machine needle 10, which helps to increase the probability of the machine needle 10 hooking the thread, so that each embroidery stitch can accurately hook the embroidery thread.

[0043] The following describes a method for controlling the needle 10 of an embroidery machine according to an embodiment of the present invention with reference to the accompanying drawings.

[0044] refer to Figure 1-Figure 11 The control method of the needle 10 of the present application comprises the following steps:

[0045] S1. When embroidering the Nth stitch, obtain the hooking direction of the loop shuttle 50, where N is a positive integer;

[0046] It should be noted that a number of stitches are required to embroider a pattern. For example, when embroidering the first stitch, the hooking direction of the loop shuttle 50 can be clockwise; when embroidering the second stitch, the hooking direction of the loop shuttle 50 can be clockwise; when embroidering the third stitch, the hooking direction of the loop shuttle 50 can be counterclockwise; when embroidering the fourth stitch, the hooking direction of the loop shuttle 50 can be counterclockwise, and so on.

[0047] With respect to the hooking direction, the rotation angle of the circular shuttle 50 can be set arbitrarily, for example, it can be 45°, 60°, etc., and the present application does not impose any specific limitation on this.

[0048] S2, embroidering the Nth stitch includes a first process, in which the needle 10 is controlled to rotate in a first direction according to the hooking direction, and the first direction is opposite to the hooking direction;

[0049] Among them, the first process includes a first extreme starting point and a first extreme end point. The first extreme starting point is that the machine needle 10 moves downward and the thread hooking part 11 of the machine needle 10 enters the needle drop hole 51 of the loop shuttle 50; the first extreme end point is that the machine needle 10 moves upward and the thread hooking part 11 of the machine needle 10 leaves the needle drop hole 51 of the loop shuttle 50.

[0050] It can be understood that in the first process, the machine needle 10 performs two movements simultaneously, that is, the machine needle 10 moves in the vertical direction on the one hand, and the machine needle 10 rotates around its axis on the other hand.

[0051] The first process includes a first limit starting point and a first limit end point. The first limit starting point is when the needle 10 moves downward and the thread hooking portion 11 of the needle 10 enters the needle drop hole 51 of the loop shuttle 50. Figure 2 and Figure 3 As shown. The thread hooking part 11 includes an upper edge 111 and a lower edge 112; the needle drop hole 51 includes an upper opening 511. Here, "the thread hooking part 11 of the needle 10 enters the needle drop hole 51 of the loop shuttle 50" can be understood as: the lower edge 112 of the thread hooking part 11 is flush with the upper opening 511 of the needle drop hole 51; or, the upper edge 111 of the thread hooking part 11 is flush with the upper opening 511 of the needle drop hole 51; or, a certain position between the upper edge 111 and the lower edge 112 is flush with the upper opening 511 of the needle drop hole 51.

[0052] Preferably, the lower edge 112 of the thread hooking portion 11 is flush with the upper opening 511 of the needle drop hole 51 .

[0053] The first limit end point is when the needle 10 moves upward and the thread hooking portion 11 of the needle 10 leaves the needle drop hole 51 of the loop shuttle 50, that is, Figure 5 and Figure 6 Here, “the thread hooking part 11 of the needle 10 leaves the needle drop hole 51 of the loop shuttle 50” can be understood as the lower edge 112 of the thread hooking part 11 being flush with the upper opening 511 of the needle drop hole 51; or, the upper edge 111 of the thread hooking part 11 being flush with the upper opening 511 of the needle drop hole 51; or, a certain position between the upper edge 111 and the lower edge 112 being flush with the upper opening 511 of the needle drop hole 51.

[0054] Preferably, the lower edge 112 of the thread hooking portion 11 is flush with the upper opening 511 of the needle drop hole 51 .

[0055] like Figure 2-Figure 6 As shown, from the first limit starting point, the needle 10 rotates in the first direction, and stops rotating at the first limit end point. At the same time, the needle 10 moves downward and gradually approaches the loop shuttle 50, and moves upward and gradually moves away from the loop shuttle 50.

[0056] In the first process, the loop shuttle 50 rotates in the thread hooking direction. The rotation starting point of the loop shuttle 50 can be that the machine needle 10 moves downward and the thread hooking part 11 of the machine needle 10 enters the needle drop hole 51 of the loop shuttle 50, and the rotation stop point of the loop shuttle 50 can be that the machine needle 10 moves upward and the thread hooking part 11 of the machine needle 10 leaves the needle drop hole 51 of the loop shuttle 50, that is, the machine needle 10 and the loop shuttle 50 start to rotate at the same time, and stop rotating at the same time.

[0057] It is understandable that, in some embodiments, the machine needle 10 and the circular shuttle 50 can start to rotate at the same time, but the two stop rotating one after another. Alternatively, in some embodiments, the machine needle 10 and the circular shuttle 50 can start to rotate one after another, but the two stop rotating at the same time. Alternatively, in some embodiments, the machine needle 10 and the circular shuttle 50 start to rotate one after another, and the two stop rotating one after another. This embodiment does not limit this, and only constrains the extreme starting point and extreme end point of the machine needle 10. The starting and stopping points of the circular shuttle 50 can be set by those skilled in the art according to actual conditions.

[0058] In the prior art, the needle 10 only moves in the vertical direction, and the thread hooking part 11 of the needle 10 is driven to hook the embroidery thread by the rotation of the loop shuttle 50. The greater the rotation angle of the loop shuttle 50, the greater the probability that the thread hooking part 11 of the needle 10 hooks the embroidery thread, but the thread hooking time is greatly extended, which reduces the embroidery efficiency and increases the motor load.

[0059] In the present application, under the premise that the rotation angle of the loop shuttle 50 remains unchanged, the needle 10 rotates in the opposite direction of the rotation of the loop shuttle 50, which is equivalent to increasing the rotation angle of the loop shuttle 50, so that each stitch of embroidery can accurately hook the embroidery thread, greatly improving the probability of the thread hooking part 11 of the needle 10 hooking the embroidery thread and avoiding extending the thread hooking time.

[0060] In an embodiment of the present invention, between the first limit starting point and the first limit end point, a first starting point and a first end point are optionally selected, and the first starting point and the first end point form a sub-first process. In the sub-first process, the machine needle is controlled to rotate along the first direction according to the hooking direction.

[0061] It can be understood that the sub-first process belongs to the first process, and the scope of the sub-first process is smaller than the scope of the first process. The first starting point can be a first limit starting point, and the first end point can be a first limit end point.

[0062] In the first sub-process, the needle is controlled to rotate in the first direction according to the hooking direction. That is to say, between the first limit starting point and the first limit end point, the technicians in this field can adjust the starting point and the end point according to the actual situation. The technicians in this field can select the starting point and the end point of the needle 10 according to the rotation process of the shuttle 50, so as to make the rotation process of the shuttle 50 and the rotation process of the needle 10 proceed at the same time as much as possible, which helps each stitch to accurately hook the embroidery thread.

[0063] In an embodiment of the present invention, the steps are further included:

[0064] S3, embroidering the Nth needle also includes a second process, in which the needle is controlled to rotate in a second direction according to the hooking direction, and the second direction is opposite to the first direction.

[0065] Among them, the second process includes a second extreme starting point and a second extreme end point. The second extreme starting point is when the needle 10 moves upward and the needle tip 12 of the needle 10 leaves the needle hole 21 of the needle plate 20, and the second extreme end point is when the needle 10 moves upward and reaches its working position.

[0066] It should be noted that the second process is located after the first process.

[0067] The second limit starting point is when the needle 10 moves upward and the needle tip 12 of the needle 10 leaves the needle hole 21 of the needle plate 20, that is, Figure 7 and Figure 8 The needle hole 21 includes an upper opening 211 and a lower opening (not marked) arranged relatively to each other. Here, "the needle tip 12 of the sewing needle 10 leaves the needle hole 21 of the needle plate 20" can be understood as: the needle tip 12 of the sewing needle 10 is flush with the upper opening 211 of the needle hole 21 of the needle plate 20; or, the needle tip 12 of the sewing needle 10 is located between the upper opening 211 and the lower opening of the needle hole 21 of the needle plate 20; or, the needle tip 12 of the sewing needle 10 is slightly higher than the upper opening 211 of the needle hole 21 of the needle plate 20.

[0068] Preferably, the needle tip 12 of the needle 10 is flush with the upper opening 211 of the needle hole 21 of the needle plate 20 .

[0069] The second limit end point is when the needle 10 moves upward and reaches its working position, that is, Fig. 9 shown.

[0070] In actual application, when the needle 10 is embroidering, the needle 10 has an initial position, a working position and an embroidery position. The initial position is the position of the needle 10 when the embroidery machine is not working. When the needle 10 is embroidering, the needle 10 reciprocates between the working position and the embroidery position. The initial position is higher than the working position, and the working position is higher than the embroidery position.

[0071] Each stitch of towel embroidery includes a hooking process and a thread removing process, and the first process mentioned above is also the hooking process.

[0072] For the thread-off process, the needle 10 moves downward from its working position, and at the same time, the embroidery frame moves in the positive direction, where the “positive direction” is the direction in which the thread-hooking portion 11 of the needle 10 is facing. In this way, the embroidery thread can be detached from the thread-hooking portion 11 of the needle 10.

[0073] In step S3, before the needle 10 reaches its working position, the thread hooking part 11 of the needle 10 is set to restore its initial orientation, that is, the orientation of the thread hooking part 11 before the needle 10 performs the Nth stitch embroidery. For example, after the needle 10 completes the second stitch embroidery and before performing the third stitch embroidery, the thread hooking part 11 of the needle 10 is set to face the right side, such as Fig.10 After the first process of the third stitch embroidery, the thread hooking part 11 of the needle 10 is as shown. Fig.11 After the second process of the third stitch embroidery, the thread hooking portion 11 of the needle 10 continues to be arranged toward the right side.

[0074] Such arrangement enables the thread hooking portion 11 of the needle 10 to face the movement of the embroidery frame, which helps to prevent the needle 10 from coming off the thread in the towel embroidery mode.

[0075] In the embodiment of the present invention, in the first process, the machine needle rotates by a preset angle α along a first direction; and in the second process, the machine needle rotates by the preset angle α along a second direction.

[0076] It should be noted that the preset angle α may be an acute angle, an obtuse angle, N times 360°, ..., and this embodiment does not impose any specific limitation on this.

[0077] Preferably, the preset angle α is an acute angle. This arrangement can shorten the thread drawing time and improve the embroidery efficiency.

[0078] In an embodiment of the present invention, between the second limit starting point and the second limit end point, a second starting point and a second end point are optionally selected, and the second starting point and the second end point form a sub-second process. In the sub-second process, the machine needle is controlled to rotate in the second direction according to the hooking direction.

[0079] It can be understood that the sub-second process belongs to the second process, and the scope of the sub-second process is smaller than the scope of the second process. The second starting point can be a second limit starting point, and the second end point can be a second limit end point.

[0080] In the second process, the needle is controlled to rotate in the second direction according to the thread hooking direction. That is to say, between the second limit starting point and the second limit end point, those skilled in the art can adjust the starting point and the end point according to actual conditions. Before the needle 10 reaches its working position, the thread hooking part 11 of the needle 10 is restored to its initial direction. The movement of the thread hooking part 11 of the needle 10 facing the embroidery frame helps the needle 10 to de-thread in the towel embroidery mode.

[0081] See also Fig.12 , is an embroidery machine provided by an embodiment of the present invention, comprising a storage device and a processor, wherein the storage device is used to store a computer program, and the processor runs the computer program to enable the embroidery machine to execute the above-mentioned needle control method.

[0082] This embodiment also provides a storage medium on which a computer program used in the above-mentioned embroidery machine is stored. When the program is executed, it includes the following steps:

[0083] When embroidering the Nth stitch, obtain the hooking direction of the shuttle, where N is a positive integer.

[0084] Embroidering the Nth stitch includes a first process, in which the needle is controlled to rotate in a first direction according to the thread hooking direction, and the first direction is opposite to the thread hooking direction; wherein the first process includes a first extreme starting point and a first extreme end point, the first extreme starting point is when the needle moves downward and the thread hooking part of the needle enters the needle drop hole of the loop shuttle; the first extreme end point is when the needle moves upward and the thread hooking part of the needle leaves the needle drop hole of the loop shuttle.

[0085] Embroidering the Nth stitch also includes a second process, in which the needle is controlled to rotate in a second direction according to the hooking direction, and the second direction is opposite to the first direction; wherein the second process includes a second extreme starting point and a second extreme end point, the second extreme starting point is when the needle moves upward and the needle tip leaves the needle hole of the needle plate, and the second extreme end point is when the needle moves upward and reaches its working position.

[0086] The above-mentioned storage media, such as: ROM / RAM, magnetic disk, optical disk, etc.

[0087] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be assigned to different functional units or modules as needed, that is, the internal structure of the storage device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the implementation method can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application.

[0088] Those skilled in the art will understand that Fig.13 The composition structure shown in the figure does not constitute a limitation on the needle control method of the present invention, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently. Figure 1 The needle control method in the machine also adopts Fig.13The units, modules, etc. referred to in the present invention refer to a series of computer programs that can be executed by a processor (not shown) in the target embroidery machine embroidery control system and can perform specific functions, which can be stored in a storage device (not shown) of the target embroidery machine embroidery control system.

[0089] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A needle control method for an embroidery machine, characterized in that: include: When embroidering the Nth stitch, obtain the hooking direction of the shuttle, where N is a positive integer; The embroidery of the Nth needle includes a first process, in which the needle is controlled to rotate in a first direction according to the hooking direction, and the first direction is opposite to the hooking direction; Among them, the first process includes a first extreme starting point and a first extreme end point, the first extreme starting point is when the machine needle moves downward and the thread hooking part of the machine needle enters the needle drop hole of the loop shuttle, and the first extreme end point is when the machine needle moves upward and the thread hooking part of the machine needle leaves the needle drop hole of the loop shuttle, between the first extreme starting point and the first extreme end point, any first starting point and a first end point are selected, the first starting point and the first end point form a sub-first process, in the sub-first process, the machine needle is controlled to rotate in the first direction according to the thread hooking direction.

2. The needle control method of an embroidery machine according to claim 1, characterized in that: Also includes the steps: The embroidery of the Nth needle also includes a second process, in which the needle is controlled to rotate in a second direction according to the hooking direction, and the second direction is the same as the hooking direction. Among them, the second process includes a second extreme starting point and a second extreme end point, the second extreme starting point is when the needle moves upward and the needle tip leaves the needle hole of the needle plate, and the second extreme end point is when the needle moves upward and reaches its working position.

3. The needle control method of an embroidery machine according to claim 2, characterized in that: In the first process, the needle rotates by a preset angle α along the first direction; in the second process, the needle rotates by the preset angle α along the second direction.

4. The needle control method of an embroidery machine according to claim 3, characterized in that: The preset angle α is an acute angle.

5. The needle control method of an embroidery machine according to claim 2, characterized in that: Between the second limit starting point and the second limit end point, a second starting point and a second end point are optionally selected, and the second starting point and the second end point form a sub-second process. In the sub-second process, the needle is controlled to rotate along the second direction according to the hooking direction.

6. An embroidery machine, characterized in that: The invention comprises a storage device and a processor, wherein the storage device is used to store a computer program, and the processor runs the computer program to enable the embroidery machine to execute the needle control method of the embroidery machine according to any one of claims 1 to 5.

7. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by the processor, the needle control method of the embroidery machine according to any one of claims 1 to 5 is implemented.

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