Wire feeding mechanism capable of actively feeding wires

Abstract

The utility model provides a thread feeding mechanism capable of actively feeding threads, which comprises a mounting frame and a guider arranged on the mounting frame and used for guiding threads, the guider is provided with at least one thread guiding hole corresponding to embroidery threads, and the mounting frame is further provided with a driving mechanism for actively feeding threads and a driven mechanism for cooperatively feeding threads, the driving mechanism comprises a driving motor, a driving shaft and at least one driving wheel arranged on the driving shaft; the driven mechanism comprises a driven shaft and at least one driven wheel which is arranged on the driven shaft and is matched with the driving wheel. According to the thread take-up lever, the thread can be actively fed, the thread take-up resistance of the thread take-up lever is reduced, and the needle and the thread are not easily broken when thick threads are fed.

Description

TECHNICAL FIELD

[0001] The utility model relates to embroidery machine technical field, especially a line feeding mechanism of initiative line feeding. BACKGROUND

[0002] Embroidery machine realizes passive line feeding through thread lifting lever action when embroidering, the thread lifting lever action is not enough to deliver the thicker line to the needle when the embroidery machine is feeding the thick line because of the big resistance of line feeding, especially the resistance between the thread winding drum and the thread lifting lever, the thread lifting lever is driven to produce action, and the end of the face line that has been sewn on the fabric produces bigger pulling force, and the thread breaking or needle breaking phenomenon is prone to occur. SUMMARY

[0003] In order to solve the above problems of prior art, the utility model provides a line feeding mechanism of initiative line feeding, which cooperates line feeding through the driving wheel and the driven wheel, reduces the resistance of thread lifting of the thread lifting lever, helps thread lifting of the thread lifting lever and reduces the thread breaking or needle breaking condition.

[0004] The technical scheme adopted is as follows:

[0005] A line feeding mechanism of initiative line feeding, characterized by comprising a mounting frame, a guide for guiding line arranged on the mounting frame, at least one line guiding hole corresponding to embroidery line being arranged on the guide, a driving mechanism for driving the driven shaft and making the driven wheel disengage or contact with the driving wheel being further arranged on the mounting frame, and a sliding slot for the driven shaft to slide in the radial direction.

[0006] Further, the mounting frame is further provided with a driving mechanism for driving the driven shaft, making the driven wheel disengage or contact with the driving wheel, and a sliding slot for the driven shaft to slide in the radial direction.

[0007] Further, the guide is provided with at least two line guiding holes, the driving shaft is provided with at least two driving wheels corresponding to the guiding holes or one driving wheel capable of feeding at least two lines or more than two lines, and the driven shaft drives the driven wheel to be arranged to slide in the axial direction relative to the driving wheel, or the driven wheel on the driven shaft is arranged to slide in the axial direction relative to the driving wheel.

[0008] Further, the guide is provided with at least two line guiding holes, the driving shaft is provided with at least two driving wheels corresponding to the guiding holes or one driving wheel capable of feeding at least two lines or more than two lines, and the driven shaft drives the driven wheel to be arranged to slide in the axial direction relative to the driving wheel, or the driven wheel on the driven shaft is arranged to slide in the axial direction relative to the driving wheel.

[0009] Further, the driving mechanism comprises a push rod for pushing the driven shaft and a motor or a cylinder for driving the push rod.

[0010] Further, the active mechanism and the lower end of the driven mechanism are provided with a wire passing plate corresponding to the guide, and the wire passing plate is provided with a wire passing hole corresponding to the wire hole.

[0011] Further, the mounting frame is mounted on the upper end of the needle rod frame or other devices arranged on the needle rod frame, or a separate mounting device can be arranged for mounting and fixing.

[0012] Further, the mounting frame comprises a back plate for mounting the guide and the wire passing plate, and the driving motor is connected to the back plate through a motor mounting plate.

[0013] Further, the back plate is provided with a support for mounting the driving shaft and the driven shaft on both sides, and the support is connected to the back plate at one end and provided with a connecting plate at the other end.

[0014] Further, the sliding groove is arranged on the support of the mounting frame and is close to one end of the connecting plate arranged on the support.

[0015] Further, the mounting frame is further provided with an elastic body for pushing the driven wheel into contact with the driving wheel.

[0016] Further, the elastic body is arranged between the connecting plate and the driven shaft or between the back plate and the driven shaft.

[0017] Further, the sliding drive mechanism is further provided, which can make the driven wheel and the driving wheel relatively slide in the axial direction so as to make the driven wheel cooperate with the corresponding driving wheel.

[0018] Further, the sliding drive mechanism is further provided, which can make the driven wheel and the driving wheel relatively slide in the axial direction so as to make the driving wheel cooperate with the corresponding driven wheel.

[0019] Further, the mounting frame is connected with the needle rod frame, and the driven wheel which can slide relative to the driving wheel on the mounting frame is provided with a fixing frame, and the needle rod frame constitutes the sliding drive mechanism.

[0020] Further, the mounting frame is connected with the needle rod frame, and the driving wheel which can slide relative to the driven wheel on the mounting frame is provided with a fixing frame, and the needle rod frame constitutes the sliding drive mechanism.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] The utility model provides a kind of line feeding mechanism of initiative line feeding, including driving mechanism and driven mechanism, after driving wheel and driven wheel cooperate and clamp line, driving wheel rotates to needle bar frame direction initiative line feeding, reduce the resistance of thread lifting lever, thread lifting is easier, when sending thick line, it is not easy to break line and break needle, driving wheel and driven wheel can be provided two or more, by sliding driving wheel and corresponding embroidery thread position driven wheel cooperation, or sliding driven wheel and corresponding embroidery thread position driving wheel cooperation, to realize line changing, applicable to the use of embroidery machine color changing when multiple embroidery thread, more widely used. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is whole structure schematic diagram of the utility model;

[0024] Fig. 2 It is structure schematic diagram of another angle of the utility model;

[0025] Fig. 3 The side view of the utility model;

[0026] Fig. 4 It is the plan view of the utility model;

[0027] Fig. 5 It is schematic diagram of line feeding mechanism installation on needle bar frame;

[0028] Fig. 6 It is the schematic diagram of embodiment 3;

[0029] Among them, mounting bracket 1, guider 2, wire guide hole 201, driving mechanism 3, drive motor 301, driving shaft 302, driving wheel 303, driven mechanism 4, driven shaft 401, driven wheel 402, elastomer 5, drive mechanism 6, push rod 601, motor or air cylinder 602, sliding slot 7, line passing plate 8, line passing hole 9, back plate 10, support 11, connecting plate 12, embroidery thread 13, needle bar frame 14. DETAILED DESCRIPTION

[0030] The utility model is further described in combination with specific implementation.

[0031] In the description of the utility model, it needs to be understood that, the orientation or position relation indicated by the terms "upper", "lower" is based on the orientation or position relation shown in the drawing, just for the convenience of describing the utility model and simplifying description, can not be understood as the limitation of the utility model.

[0032] REFERENCE Figs. 1-6The application discloses a thread feeding mechanism with active thread feeding, which comprises a mounting frame 1, a guide 2 for guiding thread arranged on the mounting frame 1, at least one thread guiding hole 201 corresponding to embroidery thread arranged on the guide 2, an active mechanism 3 for actively feeding thread arranged below the guide, a driven mechanism 4 for cooperating with the thread feeding, the active mechanism 3 comprising a driving motor 301, an active shaft 302, at least one active wheel 303 arranged on the active shaft, the driven mechanism 4 comprising a driven shaft 401, at least one driven wheel 402 arranged on the driven shaft and cooperating with the active wheel 303, and the mounting frame 1 further comprising an elastic body 5 arranged on the mounting frame 1 and used for pushing the driven wheel 402 to contact with the active wheel, a driving mechanism 6 arranged on the mounting frame 1 and used for driving the driven shaft to separate or contact the driven wheel with the active wheel, and a sliding groove 7 arranged on the mounting frame 1 and used for enabling the driven shaft to slide in a radial direction.

[0033] The driving motor 301 drives the active shaft 302 to rotate the active wheel 303, that is, to drive the active wheel 303 to rotate, the embroidery thread 13 needs to pass through the guide 2, enter the thread guiding hole 201, and then enter the contact surface of the active wheel 303 and the driven wheel 402, when the active wheel 303 rotates, the driven wheel 402 also rotates, thereby assisting the thread feeding and conveying the embroidery thread 13 downwards, and the active wheel 303 and the driven wheel 402 rotate after clamping the embroidery thread, so that the active thread feeding effect is realized, and the guide 2 plays a role of guiding and positioning.

[0034] As preferred, the active mechanism and the driven mechanism are further provided with a thread passing plate 8 corresponding to the guide 2, the thread passing plate 8 is provided with a thread passing hole 9 corresponding to the thread guiding hole 201, and the thread passing plate 8 also plays a role of positioning the embroidery thread.

[0035] The driving mechanism 6 comprises a push rod 601 used for pushing the driven shaft and a motor or a cylinder 602 used for driving the push rod, the driving mechanism 6 pushes the driven shaft, and the relative sliding structure of the driven wheel and the active wheel can be realized, and the existing technology structure can be completely used, and the sleeve of the driven shaft which can axially slide is arranged in the end ring of the push rod of the driving mechanism 6.

[0036] The mounting frame 1 comprises a back plate 10 used for mounting the guide 2 and the thread passing plate 8, the driving motor 301 is also connected to the back plate 10 through a motor mounting plate, the back plate 10 is provided with a support 11 used for mounting the active shaft and the driven shaft and a corresponding mounting hole on both sides, one end of the support 11 is connected to the back plate 10, and the other end is provided with a connecting plate 12.

[0037] The sliding groove 7 is arranged on the support 11 close to one end of the connecting plate 12, the elastic body 5 is arranged between the connecting plate 12 and the driven shaft 401, the driven shaft 401 is driven and pressed, and the driven wheel is tightly attached to the active wheel, or the elastic body 5 is arranged between the back plate 10 and the driven shaft 401, the driven shaft 401 is provided with a pulling force, and the driven wheel is tightly attached to the active wheel.

[0038] Embodiment 1

[0039] Referring to Figs. 1-6 , a driving wheel and a driven wheel are arranged to drive only one embroidery thread, the guide 2 is provided with a thread guide hole 201, and the thread guide plate 8 is provided with a corresponding thread guide hole 9. Before the embroidery thread is threaded, the driving mechanism 6 is started, the push rod 601 pushes the driven shaft, and the driven wheel 402 is disengaged from the driving wheel 303. After the embroidery thread is threaded, the push rod 601 returns to the original position, the driven wheel 402 is in contact with the driving wheel 303 under the pull of the push rod 601 or / and the driving of the elastic body 5, the driving wheel and the driven wheel clamp the embroidery thread, the driving motor 301 drives the driving wheel to rotate, and the embroidery thread 13 is transported downward, i.e. toward the needle bar holder, under the assistance of the driven wheel 402.

[0040] Embodiment 2

[0041] Referring to Figs. 1-6 , a driving wheel and a driven wheel are arranged to drive only one embroidery thread, the guide 2 is provided with a thread guide hole 201, and the thread guide plate 8 is provided with a corresponding thread guide hole 9. Before the embroidery thread is threaded, the driving mechanism 6 is started, the push rod 601 pushes the driven shaft, and the driven wheel 402 is disengaged from the driving wheel 303. After the embroidery thread is threaded, the push rod 601 returns to the original position, the driven wheel 402 is in contact with the driving wheel 303 under the pull of the push rod 601 or / and the driving of the elastic body 5, the driving wheel and the driven wheel clamp the embroidery thread, the driving motor 301 drives the driving wheel to rotate, and the embroidery thread 13 is transported downward, i.e. toward the needle bar holder, under the assistance of the driven wheel 402.

[0042] Embodiment 3

[0043] Referring to Figs. 1-5 , when multiple embroidery threads need to be transported, the color of the embroidery thread can be changed conveniently, the guide 2 is provided with at least two thread guide holes 201, the driving shaft is provided with at least two driving wheels corresponding to the thread guide holes or one driving wheel capable of transporting two or more threads, two or more driving wheels corresponding to the number of embroidery threads 13 can be arranged, or one driving wheel with an appropriate length increase can be arranged, the driving wheel with the length increase can cover two threads or thread transportation positions, and only the driving wheel 303 needs to be in contact with the embroidery thread 13 to be transported. The driven wheel 402 is provided, and the driven shaft 401 is provided with a sliding driving mechanism (not shown in the figure) for driving the driven shaft to drive the driven wheel or the driven shaft to slide in the axial direction. If two or more driving wheels 303 are arranged, the sliding driving mechanism drives the driven wheel 402 to slide to the driving wheel 303 corresponding to the thread transportation position. If one driving wheel 303 with the length increase of two threads or more threads is arranged, the sliding driving mechanism drives the driven wheel to slide to the position on the driving wheel 303 corresponding to the thread transportation position. The sliding driving mechanism can be of existing technology. The sliding driving mechanism can be an electromagnetic push rod, an air cylinder, a hydraulic rod, a screw rod assembly with a driving motor, etc. The sliding driving mechanism drives the driven shaft or the driven wheel to slide.

[0044] The structure of the sliding drive mechanism driving the driven shaft 401 to drive the driven wheel 402 to slide, or the structure of the sliding drive mechanism directly driving the driven shaft 401 to drive the driven wheel 402 to slide, can completely use the existing technology structure. Thus the driven wheel 402 slides relative to the driving wheel 303, and the driven wheel 402 slides to a position capable of driving the embroidery thread 13 to be fed, and clamps the corresponding embroidery thread 13 together with the driving wheel 303, to achieve active feeding.

[0045] Before sliding, the driving mechanism 6 can be started first, the push rod 601 pushes the driven shaft, so that the driven wheel 402 is out of contact with the driving wheel 303, and then the driven wheel 402 is driven to slide to the corresponding position, and then the push rod 601 returns to the original position, and the driven wheel 402 is in contact with the driving wheel 303 to feed the thread under the driving of the elastic body 5 or / and the pullback of the push rod 601.

[0046] Embodiment 4

[0047] Reference Fig. 6 The guide 2 is provided with at least two thread guide holes 201, and the driven shaft is provided with at least two corresponding driven wheels or a driven wheel capable of feeding two or more threads. Two or more driven wheels 402 corresponding to the embroidery thread 13 can be provided, or one driven wheel can be provided, and the length of the driven wheel 402 is appropriately increased, as long as the driven wheel 402 can be in contact with the embroidery thread 13 to be fed. The driving shaft 302 is provided with a sliding drive mechanism driving the driving shaft to drive the driving wheel or driving the driving shaft to drive the driving wheel on the driving shaft to slide in the axial direction, so that the driving wheel cooperates with the corresponding driven wheel. If two or more driven wheels 402 are provided, the sliding drive mechanism drives the driving wheel 303 to slide to the position corresponding to the driven wheel 402 to be fed. If one driven wheel capable of feeding two or more threads is provided, the sliding drive mechanism drives the driving wheel 303 to slide to the position corresponding to the driven wheel 402 to be fed. The sliding drive mechanism can use the existing technology.

[0048] The sliding drive mechanism drives the driving shaft to drive the driving wheel or drives the driving shaft to drive the driving wheel on the driving shaft to slide in the axial direction 302, so that the driving wheel 303 slides relative to the driven wheel 402, and the driving wheel 303 slides to a position capable of driving the embroidery thread 13 to be fed, and clamps the corresponding embroidery thread 13 together with the driven wheel 402, to achieve active feeding.

[0049] Before sliding, the driving mechanism 6 can be started first, the push rod 601 pushes the driven shaft, so that the driven wheel 402 is out of contact with the driving wheel 303, and then the driven wheel 402 is driven to slide to the corresponding position, and then the push rod 601 returns to the original position, and the driven wheel 402 is in contact with the driving wheel 303 to feed the thread under the driving of the elastic body 5 or / and the pullback of the push rod 601.

[0050] Embodiment 5

[0051] The mounting rack 1 is connected with the needle bar rack 14, and a fixed rack (not shown in the figure) for the driven wheel that can slide relative to the driving wheel is arranged on the mounting rack, and the needle bar rack 14 constitutes a sliding drive mechanism. The driven wheel and the driven shaft are arranged on the fixed rack, and the needle bar rack 14 is connected with the mounting rack 1. When the embroidery machine is changed in color, the mounting rack 1 can slide synchronously with the needle bar rack 14, and the needle bar rack 14 can directly constitute a sliding drive mechanism to drive the driving wheel to slide relative to the driven wheel, that is, the driver that drives the needle bar rack 14 to slide simultaneously drives the mounting rack to slide. When the mounting rack 1 slides, the driven wheel and the driven shaft arranged on the fixed rack do not slide, so the driving wheel or the driving shaft can drive the driving wheel to slide relative to the driven wheel. The fixed rack can be connected and mounted on the girder of the machine body.

[0052] The driving wheel 303 slides to a position capable of driving the embroidery thread 13 that needs to be fed, clamps the corresponding embroidery thread 13 together with the driven wheel 402, and realizes active feeding.

[0053] The scheme of starting the driving mechanism 6 before sliding can refer to the implementation cases 3 or 4.

[0054] Embodiment 6

[0055] The mounting rack 1 is connected with the needle bar rack 14, and a fixed rack for the driving wheel that can slide relative to the driven wheel is arranged on the mounting rack, and the needle bar rack 14 constitutes a sliding drive mechanism. The driving wheel and the driving shaft are fixed on the fixed rack, and the needle bar rack 14 is connected with the mounting rack 1. When the embroidery machine is changed in color, the mounting rack 1 can slide synchronously with the needle bar rack 14, and the needle bar rack 14 can directly constitute a sliding drive mechanism to drive the driven wheel to slide relative to the driving wheel, that is, the driver that drives the needle bar rack 14 to slide simultaneously drives the mounting rack to slide. When the mounting rack 1 slides, the driving wheel and the driving shaft arranged on the fixed rack do not slide, so the driven wheel or the driven shaft can drive the driven wheel to slide relative to the driving wheel. The fixed rack can be connected and mounted on the girder of the machine body.

[0056] The driven wheel slides to a position capable of driving the embroidery thread 13 that needs to be fed, clamps the corresponding embroidery thread 13 together with the driving wheel, and realizes active feeding.

[0057] The scheme of starting the driving mechanism 6 before sliding can refer to the implementation cases 3 or 4. The above-mentioned is only the optional embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made under the inventive concept of the utility model, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. An active wire feeding mechanism, characterized by: The device comprises a mounting frame (1), a guide (2) for the thread arranged on the mounting frame (1), at least one thread hole (201) corresponding to the embroidery thread arranged on the guide (2), a driving mechanism (3) for driving the thread arranged below the guide, a driven mechanism (4) for cooperating with the driving mechanism (3), the driving mechanism (3) comprising a driving motor (301), a driving shaft (302), and at least one driving wheel (303) arranged on the driving shaft (302), the driven mechanism (4) comprising a driven shaft (401) and at least one driven wheel (402) arranged on the driven shaft (401) and cooperating with the driving wheel (303), the mounting frame (1) further comprising a driving mechanism (6) for driving the driven shaft (401) to make the driven wheel (402) disengage from or contact with the driving wheel (303), a sliding groove (7) for the driven shaft (401) to slide in the radial direction, at least two thread holes (201) arranged on the guide (2), at least two driving wheels (303) arranged on the driving shaft (302) and corresponding to the thread holes (201), or one driving wheel (303) capable of driving at least two threads, the driven shaft (401) and the driven wheel (402) being arranged to slide relative to the driving wheel (303) in the axial direction, or the driving wheel (303) arranged on the driving shaft (302) being arranged to slide relative to the driven wheel (402) in the axial direction, or at least two thread holes (201) arranged on the guide (2), at least two driven wheels (402) arranged on the driven shaft (401) and corresponding to the thread holes (201), or one driven wheel (402) capable of driving at least two threads, the driving shaft (302) and the driving wheel (303) being arranged to slide relative to the driven wheel (402) in the axial direction, or the driving wheel (303) arranged on the driving shaft (302) being arranged to slide relative to the driven wheel (402) in the axial direction.

2. The active wire feeding wire feeding mechanism of claim 1, wherein: The driving mechanism (6) comprises a push rod (601) for pushing the driven shaft (401) and a motor or a cylinder (602) for driving the push rod (601).

3. The active wire feeding wire feeding mechanism of claim 1, wherein: The lower end of the driving mechanism (3) and the driven mechanism (4) is further provided with a thread passing plate (8) corresponding to the guide (2), the thread passing plate (8) being provided with thread passing holes (9) corresponding to the thread holes (201).

4. The active wire feeding wire feeding mechanism of claim 1, wherein: The mounting frame (1) is mounted on the needle bar frame (14) or the upper end of the device arranged on the needle bar frame, or a separate mounting device can be arranged for mounting and fixing.

5. The active wire feeding wire feeding mechanism of claim 3, wherein: The mounting frame (1) comprises a back plate (10) for mounting the guide (2) and the thread passing plate (8), and the driving motor (301) is connected to the back plate (10) through a motor mounting plate.

6. The active wire feeding wire feeding mechanism of claim 5, wherein: The back plate (10) is provided with a support (11) for mounting the driving shaft (302) and the driven shaft (401) on both sides, one end of the support (11) being connected to the back plate (10) and the other end being provided with a connecting plate (12).

7. The active wire feeding wire feeding mechanism of claim 1, wherein: The sliding groove (7) is arranged on the support (11) of the mounting frame (1) and is close to one end of the connecting plate (12) arranged on the support (11).

8. The push-wire mechanism of claim 1, wherein: The mounting frame (1) is further provided with an elastic body (5) for pushing the driven wheel (402) to contact with the driving wheel (303).

9. The push-wire mechanism of claim 8, wherein: The elastic body (5) is arranged between the connecting plate (12) and the driven shaft (401), or between the back plate (10) and the driven shaft (401).

10. The push-wire mechanism of claim 1, wherein: The device further comprises a sliding driving mechanism for making the driven wheel (402) and the driving wheel (303) slide relative to each other in the axial direction so that the driven wheel (402) cooperates with the corresponding driving wheel (303).

11. The push-wire mechanism of claim 1, wherein: The slippage driving mechanism can make the driven wheel and the driving wheel relatively slide in the axial direction, so as to match the driving wheel with the corresponding driven wheel.

12. The push-wire mechanism of claim 10, wherein: The mounting rack (1) is connected with a needle bar rack (14), a fixed rack is arranged on the mounting rack and can slide relative to the driving wheel, and the needle bar rack (14) constitutes the slippage driving mechanism.

13. The push-wire mechanism of claim 11, wherein: The mounting rack (1) is connected with a needle bar rack (14), a fixed rack is arranged on the mounting rack and can slide relative to the driving wheel, and the needle bar rack (14) constitutes the slippage driving mechanism.

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