A linear telescopic structure and embroidery machine thread trimmer drive box

Abstract

The utility model discloses a linear telescopic structure, including a driving rod connected to a linear closed-loop stepping motor through a linkage, the linear closed-loop stepping motor rotates to drive the linkage to make the driving rod telescopic movement, the linkage includes a linear telescopic limit structure of the driving rod; and also discloses an embroidery machine thread cutting drive box, including a box body, the linear telescopic structure is installed in the box body, the end of the driving rod extending out of the box body is connected to the embroidery machine thread cutting tool, the linear closed-loop stepping motor rotates to drive the linkage to make the driving rod telescopic one round trip so that the embroidery machine thread cutting tool cuts the embroidery thread. The linear telescopic structure is converted into linear motion by the rotational motion of the linear closed-loop stepping motor, the number of rotations of the linear closed-loop stepping motor in the embroidery machine thread cutting drive box is controllable and adjustable, the automation of embroidery thread cutting is realized, and the thread cutting efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of embroidery machine thread trimmers, in particular to a linear telescopic structure and an embroidery machine thread trimmer drive box. Background Art

[0002] In the thread cutting drive technology of embroidery machines, computer embroidery machines are machines that use embroidery threads to embroider patterns on fabrics. Patterns with rich content are embroidered with embroidery threads of different colors. In the process of embroidering such patterns, it is often necessary to switch between embroidery threads of different colors. When the embroidery threads are switched, the embroidery threads of the previous colors need to be cut off. If the embroidery threads are cut off manually, the working efficiency of the embroidery machine is low and the labor intensity of the operator is high.

[0003] Therefore, it is necessary to improve the manual thread cutting method of most existing computer embroidery machines. Utility Model Content

[0004] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide a linear telescopic structure and an embroidery machine thread cutting drive box. The number of rotations of the linear closed-loop stepping motor is controllable and adjustable, thereby realizing the automation of embroidery thread cutting and improving thread cutting efficiency.

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

[0006] A linear telescopic structure includes a driving rod connected to a linear closed-loop stepping motor through a linkage. The linear closed-loop stepping motor rotates to drive the linkage to make the driving rod perform linear telescopic motion. The linkage includes a linear telescopic limiting structure of the driving rod.

[0007] Furthermore, the linear telescopic limit structure includes a first limit plate and a second limit plate parallel to each other, and the first limit plate and the second limit plate are respectively provided with a first limit hole and a second limit hole, the first limit hole and the second limit hole are located on the same axis, and a driving rod is provided through the first limit hole and the second limit hole.

[0008] Furthermore, the linkage member includes a guide block and a first guide rod located between the first limit plate and the second limit plate, the first guide rod is parallel to the driving rod, the guide block is fixedly connected to the driving rod, and the guide block is slidably connected to the first guide rod.

[0009] Furthermore, it includes a first connecting rod, one end of which is connected to the guide block, and the other end of the first connecting rod is connected to a double-hole connector, and the double-hole connector is connected to a linear closed-loop stepper motor. The linear closed-loop stepper motor rotates to rotate the double-hole connector and drive the first connecting rod and the guide block to cause the drive rod to perform linear telescopic movement.

[0010] Furthermore, the linear telescopic limiting structure comprises a third limiting plate and a fourth limiting plate which are parallel to each other, and a third guiding rod and a fourth guiding rod which are parallel to each other are respectively arranged on the third limiting plate and the fourth limiting plate.

[0011] Furthermore, a slider is sleeved on the third guide rod and the fourth guide rod, and a driving rod and a lead screw nut are provided on the slider. The lead screw nut is connected to a lead screw passing through the slider, and a linear closed-loop stepper motor is connected to the lead screw. The linear closed-loop stepper motor drives the lead screw and the slider to make the driving rod telescopic movement linearly.

[0012] Furthermore, the linear telescopic limiting structure comprises a fifth limiting plate and a sixth limiting plate which are parallel to each other, and a driving rod is provided on the fifth limiting plate and the sixth limiting plate through a pair of limiting holes.

[0013] Furthermore, the linkage member includes a second connecting rod parallel to the fifth limiting plate and the sixth limiting plate, the lower end of the second connecting rod is fixed to the driving rod and vertically connected, a guide rail is arranged between the top of the fifth limiting plate and the sixth limiting plate, and the top end of the second connecting rod is slidably connected to the guide rail.

[0014] Furthermore, the linkage part also includes a third connecting rod parallel to the second connecting rod, and a rotatable connecting plate is provided on the third connecting rod. The second connecting rod is sleeved on one end of the connecting plate, and the other end of the connecting plate is connected to the fourth connecting rod. The lower end of the fourth connecting rod is connected to the cylindrical cam, and the cylindrical cam is connected to a linear closed-loop stepper motor. The linear closed-loop stepper motor drives the cylindrical cam to rotate one circle to make the driving rod telescopic movement linearly. The first connecting rod, the second connecting rod and the third connecting rod are on the same axis.

[0015] An embroidery machine thread trimmer drive box comprises a box body, wherein a linear telescopic structure described in any one of the above technical solutions is installed in the box body, the end of a drive rod extending out of the box body is connected to a thread trimmer of the embroidery machine, and a linear closed-loop stepping motor rotates to drive a linkage to make the drive rod linearly telescope back and forth so that the thread trimmer of the embroidery machine cuts the embroidery thread.

[0016] The beneficial effects of the utility model are as follows: the linear telescopic structure converts the rotational motion of the linear closed-loop stepping motor into linear motion, and the number of rotation circles of the linear closed-loop stepping motor in the embroidery machine thread cutting drive box is controllable and adjustable, thereby realizing the automation of embroidery thread cutting and greatly improving the thread cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0018] Figure 2 for Figure 1 A front view of an embodiment;

[0019] Figure 3 A three-dimensional diagram of another embodiment of the present utility model;

[0020] Figure 4 for Figure 3 A side view of an embodiment;

[0021] Figure 5 A three-dimensional diagram of another embodiment of the present utility model;

[0022] Figure 6 for Figure 5 Rear view of the embodiment. DETAILED DESCRIPTION

[0023] Below, a linear telescopic structure and an embroidery machine thread trimmer drive box according to the present disclosure are described in detail with reference to the accompanying drawings. In order to make the purpose, technical scheme and advantages of the present utility model clearer, the technical scheme in the embodiments of the present disclosure will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments.

[0024] Therefore, the following Figure 1-6 The detailed description of the embodiments of the present disclosure provided is not intended to limit the scope of the present disclosure claimed for protection, but merely represents selected embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure.

[0025] Unless otherwise defined in the context, the singular includes the plural. Throughout the specification, the terms "comprising", "having", etc. are used herein to specify the presence of the features, numbers, steps, operations, elements, parts or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, parts or combinations thereof.

[0026] In addition, even though terms including ordinal numbers such as "first," "second," etc. may be used to describe various components, these components are not limited by these terms, and these terms are only used to distinguish one element from other elements. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component without departing from the scope of the present disclosure.

[0027] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the disclosed product is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. They are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present disclosure.

[0028] The utility model discloses a linear telescopic structure, which is specifically applied to the thread trimming drive structure of an embroidery machine as an example for illustration, and its implementation method is as follows:

[0029] It includes a drive box and a drive rod with linear motion, one end of which is fixedly connected to the embroidery machine thread cutting tool, and the other end or the middle part is connected to the linear closed-loop stepping motor through a linkage. One implementation method of the embroidery machine thread cutting tool is that a fixed knife and a movable knife cooperate for cutting. When the embroidery machine finishes or pauses or changes colors, the embroidery thread enters the cutting area of ​​the fixed knife and the movable knife, and the drive rod is connected to the movable knife. In one implementation method, the embroidery thread cutting part is located below the embroidery fabric, the embroidery fabric is in a horizontal state, the drive rod is in a horizontal state parallel to the embroidery fabric, and is driven by the linear closed-loop stepping motor and the linkage to extend and retract linearly back and forth. The cooperation of the movable knife and the fixed knife produces a cutting action, and the movable knife cuts from a starting position and then returns to the starting position to complete the thread cutting of the embroidery machine.

[0030] The encoder of the programmable computer program on the linear closed-loop stepper motor is connected to the controller of the embroidery machine. After the program is written, the linear closed-loop stepper motor rotates under the command, so that the driving rod linearly extends and retracts back and forth to cut the embroidery thread.

[0031] The thread trimming drive structure of the embroidery machine is described in detail below with reference to the schematic diagram.

[0032] In the embodiment of the embroidery machine thread trimming drive structure, refer to Figure 1-6 , including a driving rod 1, one end of which is fixedly connected to the thread cutting tool of the embroidery machine (not shown in the figure), and the other end of the driving rod 1 is connected to a linear closed-loop stepping motor (not shown in the figure) through a linkage. The linear closed-loop stepping motor drives the linkage, and the linkage drives the driving rod 1 to extend and retract linearly back and forth to cut the embroidery thread.

[0033] In some embodiments, referring to FIG. Figure 1 and 2 The linkage member includes a limiting structure for limiting the linear extension and retraction of the driving rod 1. With the horizontal plane of the embroidery fabric (not shown in the figure) as a reference, the driving rod 1 is in a horizontal state.

[0034] Specifically, the linear telescopic limit structure includes a first limit plate 21 and a second limit plate 22 which are parallel to each other. A first limit hole and a second limit hole are respectively opened on the first limit plate 21 and the second limit plate 22, and the first limit hole and the second limit hole are located on the same axis. A driving rod 1 is arranged through the first limit hole and the second limit hole, so that the driving rod 1 can generate linear motion under the action of the linear closed-loop stepping motor and the linkage.

[0035] In some embodiments, referring to FIG. Figure 1 and 2 The linkage member includes a guide block 23 and a first guide rod 24 located between the first limit plate 21 and the second limit plate 22. Two guide holes are provided on the guide block 23. The first guide rod 24 is parallel to the driving rod 1. The guide block 23 is fixed to the driving rod 1 through one guide hole, and the guide block 23 slides on the first guide rod 24 through the other guide hole.

[0036] Furthermore, the top of the guide block 23 is fixedly connected to the first connecting rod 25 by screws, and the other end of the first connecting rod 25 is connected to a double-hole connector 26, one hole of the double-hole connector 26 is connected to the linear closed-loop stepper motor, and the other hole of the double-hole connector 26 is connected to a spherical connector 261, and the spherical connector 261 is connected to the other end of the first connecting rod 25, so that the rotation of the linear closed-loop stepper motor drives the double-hole connector 26, the first connecting rod 25, the guide block 23, and the driving rod 1 in turn to cut the embroidery thread, and a back-and-forth telescopic action of the driving rod 1 is achieved by one rotation of the linear closed-loop stepper motor, and one rotation of the linear closed-loop stepper motor is achieved by connecting the controller of the embroidery machine to the encoder of the programmable computer program on the linear closed-loop stepper motor.

[0037] In some embodiments, referring to FIG. Figure 3 and 4 The linkage member includes a limiting structure for limiting the linear extension and retraction of the driving rod 1. With the horizontal plane of the embroidery fabric (not shown in the figure) as a reference, the driving rod 1 is in a horizontal state.

[0038] Specifically, the linear telescopic limit structure includes a third limit plate 31 and a fourth limit plate 32 which are parallel to each other. A pair of first limit holes and a pair of second limit holes are respectively opened on the third limit plate 31 and the fourth limit plate 32. The pair of first limit holes are located on the same axis, and the pair of second limit holes are located on the same axis. The two axes are parallel. The third limit plate 31 and the fourth limit plate 32 are respectively provided with a parallel third guide rod 33 and a fourth guide rod 34 through a pair of first limit holes and a pair of second limit holes. The guide rods here are not limited to two, and three or four may also be sufficient.

[0039] A slider 35 is sleeved on the third guide rod 33 and the fourth guide rod 34. The slider 35 is provided with a driving rod 1 and a screw nut 36. The screw nut 36 is connected with a screw 37 passing through the slider 35. The screw nut 36 is connected with a linear closed-loop stepper motor. The linear closed-loop stepper motor drives the screw 37 and the slider 35 to make the driving rod 1 linearly extend and retract one round trip. How long the driving rod 1 needs to be for one round trip is related to the stroke required for the fixed knife and the movable knife of the embroidery machine to cut the embroidery thread once, and is also related to the pitch of the screw 37. For example, the stroke required for the fixed knife and the movable knife to cut once is 20 mm, and the pitch of the screw 37 is 5 mm. The linear closed-loop stepper motor rotates 4 times, the screw 37 moves 20 mm, and the driving rod 1 also moves 20 mm. One round trip is 40 mm, so the linear closed-loop stepper motor needs to rotate forward and reverse 2 times.

[0040] Furthermore, the driving rod 1 is located between the third guide rod 33 and the fourth guide rod 34 , and the axial distances between the driving rod 1 and the third guide rod 33 and the fourth guide rod 34 are the same, and the driving rod 1 , the third guide rod 33 and the fourth guide rod 34 are on the same axial line.

[0041] Furthermore, the plane formed by the axes of the driving rod 1 , the third guide rod 33 and the fourth guide rod 34 is taken as a horizontal plane, and the plane formed by the axes of the driving rod 1 and the screw rod 37 is taken as a vertical plane.

[0042] The screw rod 37 is driven by a linear closed-loop stepper motor. In one embodiment, a rotating wheel 38 is connected to one end of the screw rod 37 relative to the driving rod 1. The rotating wheel 38 is connected to the output shaft of the linear closed-loop stepper motor (not shown in the embodiment diagram) through a transmission belt (not shown in the embodiment diagram). The linear closed-loop stepper motor drives the screw rod 37 and the slider 35 to linearly extend and retract the driving rod 1. A reciprocating extension and retraction action of the driving rod 1 is realized by the number of rotations of the linear closed-loop stepper motor, and the number of rotations of the linear closed-loop stepper motor is realized by connecting the controller of the embroidery machine with the encoder programmable computer program on the linear closed-loop stepper motor.

[0043] In some embodiments, referring to FIG. Figure 5 and 6 The linkage member includes a limiting structure for limiting the linear extension and retraction of the driving rod 1. With the horizontal plane of the embroidery fabric (not shown in the figure) as a reference, the driving rod 1 is in a horizontal state.

[0044] Specifically, the linear telescopic limit structure includes a fifth limit plate 41 and a sixth limit plate 42 which are parallel to each other. A pair of limit holes are respectively opened on the fifth limit plate 41 and the sixth limit plate 42, and the pair of limit holes are located on the same axis. A drive rod 1 is arranged on the fifth limit plate 41 and the sixth limit plate 42 through a pair of limit holes. The drive rod 1 enables the drive rod to telescopically move linearly through a linkage part and a linear closed-loop stepping motor.

[0045] In some embodiments, the linkage includes a second connecting rod 43 parallel to the fifth limiting plate 41 and the sixth limiting plate 42, the lower end of the second connecting rod 43 is fixed to the driving rod 1 and vertically connected, a guide rail 44 is arranged between the top of the fifth limiting plate 41 and the sixth limiting plate 42, and the top end of the second connecting rod 43 is slidably connected to the guide rail 44.

[0046] The linkage also includes a third link 45 parallel to the second link 43, and a rotatable connecting plate 46 is provided on the third link 45. The second link 43 is sleeved on one end of the connecting plate 46, and the other end of the connecting plate 46 is connected to a fourth link 47. The lower end of the fourth link 47 is connected to a cylindrical cam 48, and the cylindrical cam 48 is connected to a linear closed-loop stepper motor (not shown in the figure). The linear closed-loop stepper motor drives the cylindrical cam 48 to rotate one circle so that the connecting plate 46 swings back and forth, so that the driving rod 1 linearly extends and retracts one circle. One back-and-forth telescopic action of the driving rod 1 is realized by the number of rotations of the linear closed-loop stepper motor, and the number of rotations of the linear closed-loop stepper motor is realized by connecting the controller of the embroidery machine with the encoder on the linear closed-loop stepper motor through a programmable computer.

[0047] Furthermore, the second connecting rod 43, the third connecting rod 45 and the fourth connecting rod 47 are located on the same axis.

[0048] The above embodiments of the utility model all convert the rotational motion of the linear closed-loop stepper motor into linear motion. The controller of the embroidery machine is connected with the encoder on the linear closed-loop stepper motor, so that the number of rotations of the linear closed-loop stepper motor can be controlled and adjusted, thereby realizing the automation of cutting the embroidery thread and realizing the precise cutting of the embroidery thread by the embroidery machine tool, thereby greatly improving the thread cutting efficiency.

Claims

1. A linear telescopic structure, characterized in that: It includes a driving rod connected to a linear closed-loop stepping motor through a linkage, the linear closed-loop stepping motor rotates to drive the linkage to make the driving rod move linearly, and the linkage includes a linear telescopic limit structure of the driving rod; The linear telescopic limit structure comprises a first limit plate and a second limit plate which are parallel to each other, a first limit hole and a second limit hole are respectively formed on the first limit plate and the second limit plate, the first limit hole and the second limit hole are located on the same axis, and a driving rod is provided through the first limit hole and the second limit hole; The linkage member comprises a guide block and a first guide rod located between the first limit plate and the second limit plate, the first guide rod is parallel to the driving rod, the guide block is fixedly connected to the driving rod, and the guide block is slidably connected to the first guide rod; It includes a first connecting rod, one end of which is connected to a guide block, and the other end of the first connecting rod is connected to a double-hole connector. The double-hole connector is connected to a linear closed-loop stepper motor. The linear closed-loop stepper motor rotates to rotate the double-hole connector and drive the first connecting rod and the guide block to make the drive rod telescopic movement in a linear manner.

2. A linear telescopic structure according to claim 1, characterized in that: The linear telescopic limiting structure comprises a third limiting plate and a fourth limiting plate which are parallel to each other, and a third guiding rod and a fourth guiding rod which are parallel to each other are respectively arranged on the third limiting plate and the fourth limiting plate.

3. A linear telescopic structure according to claim 2, characterized in that: A slider is sleeved on the third guide rod and the fourth guide rod, and a driving rod and a lead screw nut are arranged on the slider. The lead screw nut is connected with a lead screw passing through the slider, and a linear closed-loop stepper motor is connected to the lead screw. The linear closed-loop stepper motor drives the lead screw and the slider to make the driving rod perform linear telescopic motion.

4. A linear telescopic structure according to claim 1, characterized in that: The linear telescopic limiting structure comprises a fifth limiting plate and a sixth limiting plate which are parallel to each other, and a driving rod is arranged on the fifth limiting plate and the sixth limiting plate through a pair of limiting holes.

5. A linear telescopic structure according to claim 4, characterized in that: The linkage member includes a second connecting rod parallel to the fifth limiting plate and the sixth limiting plate, the lower end of the second connecting rod is fixed to the driving rod and vertically connected, a guide rail is arranged between the top of the fifth limiting plate and the sixth limiting plate, and the top end of the second connecting rod is slidably connected to the guide rail.

6. A linear telescopic structure according to claim 5, characterized in that: The linkage also includes a third connecting rod parallel to the second connecting rod, a rotatable connecting plate is provided on the third connecting rod, the second connecting rod is sleeved on one end of the connecting plate, and the other end of the connecting plate is connected to the fourth connecting rod, the lower end of the fourth connecting rod is connected to the cylindrical cam, and the cylindrical cam is connected to a linear closed-loop stepper motor, the linear closed-loop stepper motor drives the cylindrical cam to rotate one circle to make the driving rod telescopic movement linearly, and the first connecting rod, the second connecting rod and the third connecting rod are on the same axis.

7. An embroidery machine thread trimmer drive box, characterized in that: The invention comprises a box body, in which the linear telescopic structure according to any one of claims 1 to 6 is installed, the end of the driving rod extending out of the box body is connected to the thread trimmer of the embroidery machine, and the linear closed-loop stepping motor rotates to drive the linkage to make the driving rod linearly telescope back and forth so that the thread trimmer of the embroidery machine cuts the embroidery thread.

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