Take-up lever clutch device and embroidery machine for taping embroidery
By designing a thread take-up lever clutch device in a multi-head embroidery machine and using an actuating swing arm to control the axial movement of the thread take-up lever, the problem of slack and wear of embroidery thread when the machine head stops embroidering is solved, achieving a stable supply and tension balance of embroidery thread and improving the embroidery effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-10
AI Technical Summary
In multi-head embroidery machines, when the machine head stops embroidering, the reciprocating swing of the thread take-up lever causes the embroidery thread to loosen and wear, and may even break.
By designing a clutch device for the thread take-up lever, the forward and reverse swing of the actuating swing arm drives the axial movement of the thread take-up lever, enabling it to engage or disengage with the drive swing arm, thereby achieving stable reciprocating swing and stopping of the thread take-up lever and avoiding friction of the embroidery thread.
It effectively prevents embroidery thread wear and breakage, ensures a stable supply and balanced tension of embroidery thread, and improves embroidery quality.
Smart Images
Figure CN224106078U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a thread tensioning lever clutch device and embroidery machine for disc tape embroidery belong to the technical field of disc tape embroidery. BACKGROUND
[0002] In the technical field of embroidery machine, multi-head embroidery machine has multiple heads, these heads share a main shaft, the main shaft drives the needle bar of the head to reciprocate up and down and the thread tensioning lever to swing reciprocally through transmission structure. When a head is embroidering, the thread tensioning lever of the head swings reciprocally to collect and release embroidery thread and provide embroidery thread to the embroidery needle at the bottom end of the needle bar, and the needle bar of the head reciprocates up and down to embroider the embroidery product. When the head stops embroidering and other heads are embroidering, the needle bar of the head can be separated from the corresponding transmission structure, so that the needle bar is stationary, and the thread tensioning lever of the head continues to swing reciprocally, which not only leads to the relaxation of embroidery thread, but also causes the thread tensioning lever to repeatedly rub against the embroidery thread, resulting in the fuzzing and wear of the embroidery thread, and even the breakage of the embroidery thread. SUMMARY
[0003] The utility model aims at providing a thread tensioning lever clutch device and embroidery machine for disc tape embroidery, which makes the thread tensioning lever stably swing reciprocally to tension the embroidery thread during embroidery and stops swinging to prevent the wear of the embroidery thread when stopping embroidery.
[0004] The utility model is achieved by the following technical solutions.
[0005] A thread tensioning lever clutch device, comprising a head, a main shaft transversely penetrating the head, a thread tensioning lever shaft transversely arranged on the head, a thread tensioning lever sleeved on the thread tensioning lever shaft and having a matching part, and a driving swing arm driven by the main shaft to swing reciprocally, wherein the axial forward movement of the thread tensioning lever makes the matching part cooperate with the driving swing arm to drive the thread tensioning lever to swing reciprocally, and the axial reverse movement of the thread tensioning lever makes the matching part separate from the driving swing arm.
[0006] and a transmission assembly having an actuating swing lever and a driving mechanism, wherein the driving mechanism drives the actuating swing lever to swing forward or backward around the swing pivot of the actuating swing lever, the axial forward movement and the axial reverse movement of the thread tensioning lever are driven by the swing of the actuating swing lever, or one of the axial forward movement and the axial reverse movement of the thread tensioning lever is driven by the swing of the actuating swing lever, and the other is driven by the elastic recovery of the elastic return member.
[0007] As a further improvement of the utility model, the thread guide rod shaft is slidably connected to the machine head and can move along the axial direction thereof, the axial movement of the thread guide rod along the thread guide rod shaft is limited, the matching component with the forward abutting portion and the reverse abutting portion is arranged on the thread guide rod shaft, the axial forward movement of the thread guide rod shaft is driven by the abutting of the forward abutting portion when the actuating swing rod swings forward, and the axial reverse movement of the thread guide rod shaft is driven by the abutting of the reverse abutting portion when the actuating swing rod swings reversely.
[0008] As a further improvement of the utility model, the thread guide rod shaft is slidably connected to the machine head and can move along the axial direction thereof, the axial movement of the thread guide rod along the thread guide rod shaft is limited, the matching component with the forward abutting portion and the reverse abutting portion is arranged on the thread guide rod shaft, the thread guide rod shaft is provided with the elastic reset member and is subjected to the elastic force of the elastic reset member, the axial forward movement of the thread guide rod shaft is driven by the abutting of the forward abutting portion when the actuating swing rod swings forward, and the axial reverse movement of the thread guide rod shaft is driven by the elastic recovery of the elastic reset member; or, the axial forward movement of the thread guide rod shaft is driven by the elastic recovery of the elastic reset member, and the axial reverse movement of the thread guide rod shaft is driven by the abutting of the reverse abutting portion when the actuating swing rod swings reversely.
[0009] As a further improvement of the utility model, the thread guide rod is fixedly sleeved on the thread guide rod shaft, when the matching portion of the thread guide rod cooperates with the driving swing arm, the thread guide rod and the thread guide rod shaft swing together along the axis of the thread guide rod shaft.
[0010] As a further improvement of the utility model, the thread guide rod is rotatably sleeved on the thread guide rod shaft, when the matching portion of the thread guide rod cooperates with the driving swing arm, the thread guide rod swings along the thread guide rod shaft.
[0011] As a further improvement of the utility model, the axial movement of the thread guide rod shaft on the machine head is limited, the thread guide rod can move along the thread guide rod shaft and can swing around the thread guide rod shaft, the matching component with the forward abutting portion and the reverse abutting portion is arranged on the thread guide rod, the axial forward movement of the thread guide rod along the thread guide rod shaft is driven by the abutting of the forward abutting portion when the actuating swing rod swings forward, and the axial reverse movement of the thread guide rod along the thread guide rod shaft is driven by the abutting of the reverse abutting portion when the actuating swing rod swings reversely.
[0012] As a further improvement of the utility model, the axial movement of the thread lever shaft on the machine head is limited, the thread lever can move axially along the thread lever shaft and can swing around the thread lever shaft; a matching component with a forward abutting part or a reverse abutting part is arranged on the thread lever, the thread lever is provided with the elastic reset member and is acted by the elastic force of the elastic reset member; the axial forward movement of the thread lever along the thread lever shaft is driven by the abutting of the forward abutting part when the actuating swing lever swings forward, and the axial reverse movement of the thread lever along the thread lever shaft is driven by the elastic recovery of the elastic reset member; or, the axial forward movement of the thread lever along the thread lever shaft is driven by the elastic recovery of the elastic reset member, and the axial reverse movement of the thread lever along the thread lever shaft is driven by the abutting of the reverse abutting part when the actuating swing lever swings reversely.
[0013] As a further improvement of the utility model, the driving mechanism comprises a push-pull rod arranged transversely, and a driving motor for driving the push-pull rod to move along the axial direction thereof; the transmission assembly has a transmission swing lever that swings bidirectionally around a swing point thereof, and the transmission swing lever and the push-pull rod are movably connected.
[0014] As a further improvement of the utility model, the transmission assembly further comprises a connecting frame and a connecting rod, the connecting frame is connected to the machine head, the connecting rod is arranged vertically on the connecting frame, the transmission swing lever is connected to the upper portion of the connecting rod, and the actuating swing lever is connected to the lower portion of the connecting rod.
[0015] As a further improvement of the utility model, the output shaft of the driving motor is connected with a groove cam, the cam surface of the groove cam has a groove that is annularly closed and matches the axial stroke of the push-pull rod; the push-pull rod is provided with a transmission member, and the transmission member and the groove are in sliding fit or rolling fit.
[0016] As a further improvement of the utility model, the output shaft of the driving motor is connected with a cylindrical cam, the cylindrical surface of the cylindrical cam has a groove that is curvedly extended and matches the axial stroke of the push-pull rod; the push-pull rod is provided with a transmission member, and the transmission member and the groove are in sliding fit or rolling fit.
[0017] As a further improvement of the utility model, the groove is formed with a holding section at the positions corresponding to the minimum stroke and the maximum stroke of the push-pull rod, and the push-pull rod maintains the minimum stroke or the maximum stroke when the transmission member slides along the holding section.
[0018] As a further improvement of the utility model, the driving motor is arranged as an alternating-current motor.
[0019] As a further improvement of the utility model, the driving mechanism further comprises a mounting seat, the driving motor is arranged on the mounting seat, and the push-pull rod slides through the mounting seat; a sliding block is fixed on the push-pull rod, and the transmission member is arranged on the sliding block; at least one guide shaft is horizontally arranged on the mounting seat, and the sliding block and the guide shaft are in sliding fit.
[0020] As a further improvement of the utility model, the matching part of the thread tensioning lever is provided with a clamping groove, the thread tensioning lever moves in the positive direction along the axial direction of the thread tensioning lever shaft to enable the clamping groove to be clamped with the end of the driving swing arm, and the thread tensioning lever moves in the reverse direction along the axial direction of the thread tensioning lever shaft to enable the clamping groove to be separated from the end of the driving swing arm.
[0021] As a further improvement of the utility model, the end of the driving swing arm is provided with a roller, so that the groove wall of the clamping groove and the rolling surface of the roller are in close contact when the clamping groove and the end of the driving swing arm are clamped.
[0022] As a further improvement of the utility model, the plurality of machine heads are arranged in a transverse direction and are spaced apart, and the driving mechanism comprises two driving mechanisms, wherein the push-pull rod of one driving mechanism is in transmission connection with the transmission swing lever on a part of the machine heads, and the push-pull rod of the other driving mechanism is in transmission connection with the transmission swing lever on another part of the machine heads.
[0023] As a further improvement of the utility model, the plurality of machine heads are arranged in a transverse direction and are spaced apart, and the driving mechanism comprises one driving mechanism, and the push-pull rod of the driving mechanism is in transmission connection with the transmission swing lever on all the machine heads.
[0024] An embroidery machine for disc tape embroidery, comprising the thread tensioning lever clutch device.
[0025] The utility model has the advantages of:
[0026] The positive and reverse swing of the actuating swing lever directly drives the positive axial movement of the thread tensioning lever, so that the matching part is matched with the driving swing arm and forms rigid mechanical linkage, so that the reciprocating swing power of the driving swing arm can be transmitted to the thread tensioning lever without delay; the reverse axial movement of the thread tensioning lever is driven by the reverse swing of the actuating swing lever or the intervention of the elastic reset member, so that the matching part and the driving swing arm can be quickly separated, the reciprocating swing of the thread tensioning lever is stopped, and the repeated friction of the embroidery thread and the thread tensioning lever is avoided, so as to prevent the embroidery thread from being broken. BRIEF DESCRIPTION OF DRAWINGS
[0027] The preferred embodiments of the utility model will be described in detail below with reference to the drawings, so as to help understand the purpose and advantages of the utility model, wherein:
[0028] Figure 1 It is a structural schematic view of the clutch device;
[0029] Figure 2 Structure diagram of the driving arm and the matching part when matched;
[0030] Figure 3 Structure diagram of the thread lifting lever shaft and the thread lifting lever in the first embodiment of the first mode;
[0031] Figure 4 Structure diagram of the thread lifting lever shaft and the thread lifting lever in the second embodiment of the first mode;
[0032] Figure 5 Structure diagram of the thread lifting lever shaft and the thread lifting lever in the first embodiment of the second mode;
[0033] Figure 6 Structure diagram of the thread lifting lever shaft and the thread lifting lever in the second embodiment of the second mode;
[0034] Figure 7 Structure diagram of the transmission assembly;
[0035] Figure 8 Structure diagram of the driving mechanism;
[0036] Figure 9 Structure diagram of the groove cam provided in the driving mechanism;
[0037] Figure 10 Structure diagram of the cylindrical cam provided in the driving mechanism;
[0038] Figure 11 Structure diagram of the plurality of heads in the case of being provided with two in the driving mechanism;
[0039] Figure 12 Structure diagram of the plurality of heads in the case of being provided with one in the driving mechanism;
[0040] Figure 13 Structure diagram of the embroidery machine. DETAILED DESCRIPTION
[0041] The utility model will be explained in further detail below according to the drawings and the embodiment.
[0042] In the present specification, the orientation terms such as up, down, left, right, front, back, front face, back face, top, bottom, etc. mentioned or possibly mentioned are defined relative to the structure shown in the drawings, and the words "inner" and "outer" respectively refer to the direction towards or away from the geometric center of a specific component, which are relative concepts, so it is possible to change accordingly according to different positions, different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.
[0043] Embodiment 1:
[0044] A thread lever clutch device, referring to Figures 1-12 , in particular referring to Figure 1 and Figure 2 , comprising a head 1, a main shaft 11, a thread lever shaft 21, a thread lever 22, a driving swing arm 12. Wherein, the main shaft 11 is transversely arranged and penetrates the head 1, the thread lever shaft 21 is transversely arranged on the head 1, and the driving swing arm 12 is driven by the main shaft 11 to reciprocate. The thread lever 22 has a matching part 23, and the thread lever 22 has two states, one of which is that the matching part 23 of the thread lever 22 cooperates with the driving swing arm 12, so that the thread lever 22 is driven by the driving swing arm 12 to reciprocate around the axis of the thread lever shaft 21 as the rotation axis, so that the thread lever 22 can pull the surface thread of the corresponding needle bar in the embroidery process to adjust the supply amount of the surface thread and keep the tension of the thread balanced; the other state is that the matching part 23 of the thread lever 22 is separated from the driving swing arm 12, so that the corresponding needle bar of the thread lever 22 stops pulling the surface thread when the corresponding needle bar stops embroidering. The thread lever 22 can move in the axial positive direction or in the axial reverse direction of the thread lever shaft 21, the axial positive direction refers to the direction in which the matching part 23 gradually approaches the driving swing arm 12, and the axial reverse direction refers to the direction in which the matching part 23 gradually moves away from the driving swing arm 12, and the axial positive movement of the thread lever 22 makes the matching part 23 cooperate with the driving swing arm 12, and the axial reverse movement makes the matching part 23 separate from the driving swing arm 12.
[0045] The thread lever clutch device further comprises a transmission assembly and a driving mechanism, wherein the transmission assembly has an actuating swing lever 31, the actuating swing lever 31 can swing in the positive direction and in the reverse direction around its rotation support point, the positive swing of the actuating swing lever 31 matches the axial positive movement of the thread lever 22, and the reverse swing matches the axial reverse movement of the thread lever 22, and the driving mechanism is used to drive the actuating swing lever 31 to swing in the positive direction and in the reverse direction.
[0046] In an embodiment, the axial positive movement of the thread lever 22 is driven by the positive swing of the actuating swing lever 31, that is, under the driving of the positive swing of the actuating swing lever 31, the thread lever shaft 21 moves in the positive direction so that the matching part 23 cooperates with the driving swing arm 12 to drive the driving swing arm 12 to reciprocate the thread lever 22 to pull the thread; the axial reverse movement of the thread lever 22 is driven by the reverse swing of the actuating swing lever 31, that is, under the driving of the reverse swing of the actuating swing lever 31, the thread lever shaft 21 moves in the reverse direction so that the matching part 23 separates from the driving swing arm 12.
[0047] In another embodiment, the thread tension lever clutch device is further provided with an elastic reset member 24. One of the axial forward movement and the axial reverse movement of the thread tension lever 22 is driven by the swing of the actuating swing lever 31, and the other is driven by the elastic recovery of the elastic reset member 24. For example, the axial reverse movement of the thread tension lever 22 is driven by the elastic recovery of the elastic reset member 24, that is, the elastic reset member 24 is elastically deformed during the axial forward movement of the thread tension lever 22, and the thread tension lever shaft 21 moves reversely under the driving of the elastic force generated by the elastic recovery of the elastic reset member 24. In the case where one of the axial forward movement and the axial reverse movement of the thread tension lever 22 is driven by the elastic reset member 24, the thread tension lever clutch device must be provided with the elastic reset member 24, and the elastic reset member 24 can not be provided in the former embodiment.
[0048] In the present embodiment, the axial forward movement of the thread tension lever 22 is directly driven by the forward and reverse swing of the actuating swing lever 31, so that the cooperation part 23 cooperates with the driving swing arm 12 and forms a rigid mechanical linkage, so that the reciprocating swing power of the driving swing arm 12 can be transmitted to the thread tension lever 22 without delay; the axial reverse movement of the thread tension lever 22 is driven by the reverse swing of the actuating swing lever 31 or the intervention of the elastic reset member 24, so that the cooperation part 23 and the driving swing arm 12 can be quickly separated, so that the thread tension lever 22 stops reciprocating swing to avoid repeated friction of the embroidery thread and the thread tension lever 22 and even cause the embroidery thread to break.
[0049] As for the movement mode of the thread tension lever shaft 21, there are two modes, the first mode is that the thread tension lever shaft 21 is axially movable on the machine head 1, and the axial movement of the thread tension lever 22 relative to the thread tension lever shaft 21 is limited, and the second mode is that the axial movement of the thread tension lever shaft 21 on the machine head 1 is limited, and the thread tension lever 22 is axially movable along the thread tension lever shaft 21. Both modes can realize the axial bidirectional movement of the thread tension lever 22, so that the cooperation part 23 of the thread tension lever 22 cooperates with or separates from the driving swing arm 12.
[0050] In the first mode of the first embodiment, refer to Figure 3The thread tension lever shaft 21 is slidingly connected to the machine head 1 and can move along the axial direction of the thread tension lever shaft 21, and the axial movement of the thread tension lever 22 is limited. The thread tension lever shaft 21 is provided with a matching component 25, and the matching component 25 has a forward abutting part 251 and a reverse abutting part 252, which are arranged in a transverse direction and spaced apart from each other. The driving part 311 of the driving swing lever 31 is located between the forward abutting part 251 and the reverse abutting part 252. When the driving mechanism drives the driving swing lever 31 to swing forward, the driving part 311 of the driving swing lever 31 abuts against the forward abutting part 251 of the matching component 25 and exerts a pushing force on the forward abutting part 251, thereby driving the thread tension lever shaft 21 and the thread tension lever 22 to move along the axial direction in a forward direction under the driving of the forward swing of the driving swing lever 31, so that the matching part 23 cooperates with the driving swing arm 12; when the driving swing lever 31 swings reversely, the driving part 311 of the driving swing lever 31 abuts against the reverse abutting part 252 of the matching component 25 and exerts a pushing force on the reverse abutting part 252, thereby driving the thread tension lever shaft 21 and the thread tension lever 22 to move along the axial direction in a reverse direction under the driving of the reverse swing of the driving swing lever 31, so that the matching part 23 is separated from the driving swing arm 12.
[0051] In the second embodiment of the first mode, referring to Figure 4 The thread tension lever shaft 21 is slidingly connected to the machine head 1 and can move along the axial direction of the thread tension lever shaft 21, and the axial movement of the thread tension lever 22 is limited. The thread tension lever shaft 21 is provided with a matching component 25, and the matching component 25 has a forward abutting part 251 and a reverse abutting part 252, which are arranged in a transverse direction and spaced apart from each other. The driving part 311 of the driving swing lever 31 is located between the forward abutting part 251 and the reverse abutting part 252. When the driving mechanism drives the driving swing lever 31 to swing forward, the driving part 311 of the driving swing lever 31 abuts against the forward abutting part 251 of the matching component 25 and exerts a pushing force on the forward abutting part 251, thereby driving the thread tension lever shaft 21 and the thread tension lever 22 to move along the axial direction in a forward direction under the driving of the forward swing of the driving swing lever 31, so that the matching part 23 cooperates with the driving swing arm 12; when the driving swing lever 31 swings reversely, the driving part 311 of the driving swing lever 31 abuts against the reverse abutting part 252 of the matching component 25 and exerts a pushing force on the reverse abutting part 252, thereby driving the thread tension lever shaft 21 and the thread tension lever 22 to move along the axial direction in a reverse direction under the driving of the reverse swing of the driving swing lever 31, so that the matching part 23 is separated from the driving swing arm 12.
[0052] In the above two embodiments, the thread tension lever 22 can be fixedly sleeved on the thread tension lever shaft 21, and when the matching part 23 of the thread tension lever 22 matches the driving swing arm 12, the thread tension lever 22 and the thread tension lever shaft 21 jointly swing back and forth around the axis of the thread tension lever shaft 21. The thread tension lever 22 can also be rotatably sleeved on the thread tension lever shaft 21, and the thread tension lever shaft 21 needs to be provided with a limiting structure on both sides of the thread tension lever 22 in the transverse direction to clamp the thread tension lever 22, so that the axial movement of the thread tension lever 22 along the thread tension lever shaft 21 is limited, and when the matching part 23 of the thread tension lever 22 matches the driving swing arm 12, the thread tension lever 22 swings back and forth around the thread tension lever shaft 21.
[0053] In the first embodiment of the second mode, referring to Figure 5 , the axial movement of the thread tension lever shaft 21 on the head 1 is limited, and the thread tension lever 22 is movably sleeved on the thread tension lever shaft 21, so that it can move along the thread tension lever shaft 21 and swing around the thread tension lever shaft 21. The thread tension lever 22 is provided with a matching part 25, and the matching part 25 has a forward abutting part 251 and a reverse abutting part 252, which are arranged transversely apart from each other. The acting part 311 of the actuating swing lever 31 is located between the forward abutting part 251 and the reverse abutting part 252. When the driving mechanism drives the actuating swing lever 31 to swing forward, the acting part of the actuating swing lever 31 abuts against the forward abutting part 251 of the matching part 25 and generates a pushing force thereon, so that the thread tension lever 22 moves forward along the axis of the thread tension lever shaft 21 under the driving of the forward swing of the actuating swing lever 31, so that the matching part 23 matches the driving swing arm 12; when the actuating swing lever 31 swings reversely, the acting part of the actuating swing lever 31 abuts against the reverse abutting part 252 of the matching part 25 and generates a pushing force thereon, so that the thread tension lever 22 moves reversely along the axis of the thread tension lever shaft 21 under the driving of the reverse swing of the actuating swing lever 31, so that the matching part 23 and the driving swing arm 12 are separated.
[0054] In the second embodiment of the second mode, referring to Figure 6The axial movement of the thread tension lever shaft 21 on the machine head 1 is limited, the thread tension lever 22 is movably sleeved on the thread tension lever shaft 21, so that it can move along the thread tension lever shaft 21 and swing around the thread tension lever shaft 21. The thread tension lever 22 is provided with a matching part 25, the matching part 25 is only provided with a forward abutting part 251, and the thread tension lever 22 is provided with an elastic reset part 24 and is acted on by the elastic force of the elastic reset part 24. Specifically, the elastic reset part 24 is a spring sleeved on the thread tension lever shaft 21, one end of the spring acts on the machine shell and the other end acts on the thread tension lever 22. When the driving mechanism drives the actuating swing lever 31 to swing forward, the acting part of the actuating swing lever 31 abuts against the forward abutting part 251 of the matching part 25 and generates a pushing force thereon, so that the thread tension lever 22 is driven to move forward along the thread tension lever shaft 21 under the forward swinging of the actuating swing lever 31, so that the matching part 23 cooperates with the driving swing arm 12; when the actuating swing lever 31 swings reversely, the actuating swing lever 31 and the forward abutting part 251 are separated and the acting force on the matching part 25 is removed, at this time the elastic reset part 24 is restored due to the elasticity, and the elastic force of the elastic reset part 24 acting on the thread tension lever shaft 21 drives the thread tension lever 22 to move reversely along the thread tension lever shaft 21, so that the matching part 23 and the driving swing arm 12 are separated. Alternatively, the matching part 25 is only provided with a reverse abutting part 252, the forward movement of the thread tension lever 22 along the thread tension lever shaft 21 is driven by the elastic recovery of the elastic reset part 24, and the reverse movement of the thread tension lever 22 along the thread tension lever shaft 21 is driven by the reverse swinging of the actuating swing lever 31 and the abutting of the reverse abutting part 252.
[0055] For the driving mechanism and the transmission assembly, refer to Figure 7 and Figure 8 The starting mechanism includes a push-pull rod 42 and a starting motor, wherein the push-pull rod 42 is transversely arranged and is driven to move axially by the driving motor 41. The transmission assembly further has a transmission swing lever 32, the transmission swing lever 32 swings around its rotating support point and is movably connected with the push-pull rod 42. The driving mechanism drives the push-pull rod 42 to move along its axial direction, so as to transmit power to the transmission swing lever 32 to make it swing, and the transmission swing lever 32 transmits power to the actuating swing lever 31 to drive the actuating swing lever 31 to swing forward and reversely.
[0056] For the driving mechanism and the transmission assembly, refer to Figure 7 The transmission assembly further includes a connecting frame 34 and a connecting rod 33, wherein the connecting frame 34 is connected on the machine head 1, the connecting rod 33 is vertically arranged and is rotatably installed on the connecting frame 34, the transmission swing lever 32 is connected above the connecting rod 33 so that the push-pull rod 42 is arranged above the machine head 1, and the transmission swing lever 32 is connected below the connecting rod 33.
[0057] For the driving mechanism and the driving mode of the push-pull rod 42, in an embodiment, refer to Figure 9 and combine Figure 8The output shaft of the driving mechanism is connected with a groove cam 43, which is disc-shaped and has an annular groove g on one wheel surface facing the push-pull rod 42. The groove g can be closed or non-closed. The center point corresponding to the groove g is offset from the position where the output shaft is connected with the groove cam 43, and the shape of the groove g matches the stroke of the push-pull rod 42. The push-pull rod 42 is provided with a transmission member 421, which is in sliding or rolling fit with the groove g. For example, the transmission member 421 is provided as a roller, and the rolling surface of the roller is in close fit with the groove wall of the groove g, so that the transmission member 421 and the groove g are in rolling fit, thereby reducing the friction during rolling along the groove g.
[0058] In another embodiment, referring to Figure 10 and in combination with Figure 8 , the output shaft of the driving mechanism is connected with a cylindrical cam 44, which is cylindrical and has one end surface connected with the output shaft. The cylindrical surface of the cylindrical cam 44 has a curved groove g, and the line type of the groove g matches the stroke of the push-pull rod 42. The push-pull rod 42 is provided with a transmission member 421, which is in sliding or rolling fit with the groove g.
[0059] For the driving mechanism, the driving mechanism further includes a mounting base 45, and the driving motor 41 is arranged on the mounting base 45. The mounting base 45 can be fixed on the beam of the embroidery machine, so that the mounting and arrangement of the driving mechanism are stable and firm. The push-pull rod 42 is fixed with a sliding block 422, and the transmission member 421 is arranged on the sliding block 422. The mounting base 45 is transversely provided with at least one guide shaft 451, and the sliding block 422 and the guide shaft 451 are in sliding fit. By arranging the sliding block 422 and the guide shaft 451 in sliding connection, the axial movement of the push-pull rod 42 can be prevented from deviation or shaking, thereby ensuring the transmission accuracy.
[0060] In the above two embodiments, referring to Figure 9 and Figure 10 , the groove g has a holding section at the minimum stroke and the maximum stroke of the push-pull rod 42. When the transmission member 421 slides along the holding section, the push-pull rod 42 maintains its minimum stroke or maximum stroke. Since the holding section is arranged in the groove g, the control accuracy of the driving motor 41 can be reduced. Even if the driving motor 41 drives the groove cam 43 or the cylindrical cam 44 to rotate by too much or too little, as long as the transmission member 421 is located in the holding section, the push-pull rod 42 will maintain the maximum stroke or the minimum stroke, and will not move axially to change the stroke of the push-pull rod 42, thereby ensuring the forward and reverse swing angles of the actuating swing rod 31, and ensuring the accuracy of the engagement and disengagement of the thread picking rod 22.
[0061] In the above two embodiments, the driving motor 41 is set as an alternating current motor. The alternating current motor has the advantages of low cost, simple structure and convenient maintenance. Since the alternating current motor does not need a commutator and brush structure, the manufacturing cost and maintenance cost are lower than those of the direct current motor, and the service life is longer. The disadvantage of the alternating current motor is the insufficient control accuracy. Since the above two embodiments can reduce the requirement for control accuracy by setting the retaining section in the groove g, the disadvantage of the alternating current motor can be compensated.
[0062] With reference to Figure 2 For the cooperation between the cooperation part 23 and the driving swing arm 12, the cooperation part 23 of the thread lifting lever 22 has a clamping groove 231. The clamping groove 231 and the end of the driving swing arm 12 are clamped and cooperated when the thread lifting lever 22 moves along the axial direction of the thread lifting lever shaft 21 in the forward direction, and the clamping groove 231 and the end of the driving swing arm 12 are separated when the thread lifting lever 22 moves along the axial direction of the thread lifting lever shaft 21 in the reverse direction. The cooperation between the cooperation part 23 and the driving swing arm 12 is achieved by clamping and cooperating, which can ensure the rigid connection of the power transmission between the driving swing arm 12 and the thread lifting lever 22, so that the thread lifting lever 22 can stably and reliably reciprocate to lift the embroidery thread.
[0063] The end of the driving swing arm 12 is provided with a roller 121, so that the groove wall of the clamping groove 231 and the rolling surface of the roller 121 are in close contact when the clamping groove 231 and the end of the driving swing arm 12 are clamped and cooperated. The roller 121 can be specifically set as a bearing. The rolling contact between the roller 121 and the wall of the clamping groove 231 replaces the traditional sliding friction, which can greatly reduce the friction generated between the two, effectively prolong the service life, and also reduce the operating noise caused by friction.
[0064] In one embodiment, with reference to Figure 11 and in combination with Figure 1 The machine head 1 is provided with a plurality of machine heads and is arranged in a transverse direction. The machine head 1 is divided into odd and even according to the arrangement order. The driving mechanism is provided with two driving mechanisms. The push-pull rod 42 of one of the driving mechanisms is in driving connection with the transmission swing lever 32 on the odd machine head 1, and the push-pull rod 42 of the other driving mechanism is in driving connection with the transmission swing lever 32 on the even machine head 1. This embodiment is suitable for the case where the number of machine heads 1 is large. The load is shared by the two push-pull rods 42.
[0065] In another embodiment, with reference to Figure 12 and in combination with Figure 1 The machine head 1 is provided with a plurality of machine heads and is arranged in a transverse direction. The driving mechanism is provided with one driving mechanism, and the push-pull rod 42 of the driving mechanism is in driving connection with the transmission swing lever 32 on all machine heads 1. This embodiment is suitable for the case where the number of machine heads 1 is small. Only one push-pull rod 42 is needed.
[0066] Case 2:
[0067] An embroidery machine for disc band embroidery, with reference to Figure 13 , comprising a thread tension lever clutch device, as shown in embodiment 1.
[0068] In this embodiment, the machine head 1 is provided with a plurality of and fixed on the beam 5.
[0069] In this embodiment, the bottom of the machine head 1 is provided with a tray 13, which provides a disc band to cooperate with the needle bar on the machine head 1 for disc band embroidery.
[0070] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of each embodiment of the present application.
Claims
1. A thread take-up lever clutch apparatus characterized by comprising: The machine head (1), the main shaft (11) transversely penetrating the machine head (1), the thread lever shaft (21) transversely arranged on the machine head (1), the thread lever (22) sleeved on the thread lever shaft (21) and having a matching part (23), the driving swing arm (12) driven by the main shaft (11) to swing back and forth; the forward movement of the thread lever (22) along the axial direction of the thread lever shaft (21) makes the matching part (23) and the driving swing arm (12) match to drive the thread lever (22) to swing back and forth, and the reverse movement makes the matching part (23) and the driving swing arm (12) separate; and the transmission assembly having the actuating swing lever (31), the driving mechanism for driving the actuating swing lever (31) to swing around the swing point thereof; the forward movement and the reverse movement of the thread lever (22) along the axial direction are both driven by the swing of the actuating swing lever (31), or one of the forward movement and the reverse movement of the thread lever (22) along the axial direction is driven by the swing of the actuating swing lever (31), and the other is driven by the elastic recovery of the elastic return member (24).
2. The thread take-up lever clutch apparatus according to claim 1, characterized by The thread lever shaft (21) is slidingly connected to the machine head (1) and can move along the axial direction thereof, and the movement of the thread lever (22) along the axial direction of the thread lever shaft (21) is limited; the matching part (25) having the forward abutting part (251) and the reverse abutting part (252) is arranged on the thread lever shaft (21); the forward movement of the thread lever shaft (21) along the axial direction is driven by the abutment of the forward abutting part (251) when the actuating swing lever (31) swings forward, and the reverse movement of the thread lever shaft (21) along the axial direction is driven by the abutment of the reverse abutting part (252) when the actuating swing lever (31) swings reversely.
3. The thread take-up lever clutch apparatus according to claim 1, characterized by The thread lever shaft (21) is slidingly connected to the machine head (1) and can move along the axial direction thereof, and the movement of the thread lever (22) along the axial direction of the thread lever shaft (21) is limited; the matching part (25) having the forward abutting part (251) or the reverse abutting part (252) is arranged on the thread lever shaft (21), and the thread lever shaft (21) is provided with the elastic return member (24) and is subjected to the elastic force of the elastic return member (24); the forward movement of the thread lever shaft (21) along the axial direction is driven by the abutment of the forward abutting part (251) when the actuating swing lever (31) swings forward, and the reverse movement of the thread lever shaft (21) along the axial direction is driven by the elastic recovery of the elastic return member (24); or the forward movement of the thread lever shaft (21) along the axial direction is driven by the elastic recovery of the elastic return member (24), and the reverse movement of the thread lever shaft (21) along the axial direction is driven by the abutment of the reverse abutting part (252) when the actuating swing lever (31) swings reversely.
4. The thread take-up lever clutching device according to claim 2 or 3, characterized in that The thread lever (22) is fixedly sleeved on the thread lever shaft (21); when the matching part (23) of the thread lever (22) matches the driving swing arm (12), the thread lever (22) and the thread lever shaft (21) swing back and forth together around the axis of the thread lever shaft (21).
5. The thread take-up lever clutching device according to claim 2 or 3, characterized in that The thread tension lever (22) is rotatably sleeved on the thread tension lever shaft (21); when the matching part (23) of the thread tension lever (22) matches the driving swing arm (12), the thread tension lever (22) swings back and forth around the thread tension lever shaft (21).
6. The thread take-up lever clutch apparatus according to claim 1, wherein The axial movement of the thread tension lever shaft (21) on the machine head (1) is limited, the thread tension lever (22) can move along the thread tension lever shaft (21) and swing around the thread tension lever shaft (21); the matching part (25) with the positive abutting part (251) and the reverse abutting part (252) is arranged on the thread tension lever (22); the axial positive movement of the thread tension lever (22) along the thread tension lever shaft (21) is driven by the abutting of the positive abutting part (251) when the driving swing lever (31) swings positively; the axial reverse movement of the thread tension lever (22) along the thread tension lever shaft (21) is driven by the abutting of the reverse abutting part (252) when the driving swing lever (31) swings reversely.
7. The thread take-up lever clutch apparatus according to claim 1, wherein The axial movement of the thread tension lever shaft (21) on the machine head (1) is limited, the thread tension lever (22) can move along the thread tension lever shaft (21) and swing around the thread tension lever shaft (21); the matching part (25) with the positive abutting part (251) or the reverse abutting part (252) is arranged on the thread tension lever (22), the thread tension lever (22) is provided with the elastic reset part (24) and is acted by the elastic force of the elastic reset part (24); the axial positive movement of the thread tension lever (22) along the thread tension lever shaft (21) is driven by the abutting of the positive abutting part (251) when the driving swing lever (31) swings positively; the axial reverse movement of the thread tension lever (22) along the thread tension lever shaft (21) is driven by the elastic recovery of the elastic reset part (24); or, the axial positive movement of the thread tension lever (22) along the thread tension lever shaft (21) is driven by the elastic recovery of the elastic reset part (24), the axial reverse movement of the thread tension lever (22) along the thread tension lever shaft (21) is driven by the abutting of the reverse abutting part (252) when the driving swing lever (31) swings reversely.
8. The thread take-up lever clutch apparatus according to claim 1, wherein The driving mechanism comprises the push-pull rod (42) arranged transversely, and the driving motor (41) for driving the axial movement of the push-pull rod (42); the transmission assembly has the transmission swing lever (32) which swings bidirectionally around the swing point thereof, and the transmission swing lever (32) is movably connected with the push-pull rod (42).
9. The thread take-up lever clutching device according to claim 8, characterized in that The transmission assembly further comprises the connecting frame (34) and the connecting rod (33), the connecting frame (34) is connected on the machine head (1), the connecting rod (33) is vertically arranged on the connecting frame (34), the transmission swing lever (32) is connected on the upper part of the connecting rod (33), and the driving swing lever (31) is connected on the lower part of the connecting rod (33).
10. The thread take-up lever clutch apparatus according to claim 8, wherein The output shaft of the driving motor (41) is connected with the groove cam (43), the cam surface of the groove cam (43) has the annular groove (g) which matches the axial stroke of the push-pull rod (42); the push-pull rod (42) is provided with the transmission part (421), and the transmission part (421) and the groove (g) are in sliding fit or rolling fit.
11. The thread take-up lever clutch apparatus according to claim 8, wherein The output shaft of the driving motor (41) is connected with a cylindrical cam (44), the cylindrical surface of the cylindrical cam (44) has a groove (g) extending in a curve and matching the axial stroke of the push-pull rod (42); the push-pull rod (42) is provided with a transmission member (421), the transmission member (421) and the groove (g) are in sliding fit or rolling fit.
12. The thread take-up lever clutching device according to claim 10 or 11, characterized in that The driving mechanism further comprises a mounting base (45), the driving motor (41) is arranged on the mounting base (45), the push-pull rod (42) slides through the mounting base (45); a sliding block (422) is fixed on the push-pull rod (42), the transmission member (421) is arranged on the sliding block (422); at least one guide shaft (451) is arranged transversely on the mounting base (45), the sliding block (422) and the guide shaft (451) are in sliding fit.
13. The thread take-up lever clutching device according to claim 10 or 11, characterized in that The groove (g) is formed with a holding section at the minimum stroke and the maximum stroke of the push-pull rod (42), the push-pull rod (42) maintains its minimum stroke or maximum stroke when the transmission member (421) slides along the holding section.
14. The thread take-up lever clutching device according to claim 13, wherein The driving motor (41) is an alternating current motor.
15. The thread take-up lever clutch apparatus according to claim 1, wherein The matching part (23) of the thread take-up lever (22) has a clamping groove (231), the clamping groove (231) and the end of the driving swing arm (12) are clamped and matched when the thread take-up lever (22) moves along the axial positive direction of the thread take-up lever shaft (21), the clamping groove (231) and the end of the driving swing arm (12) are separated when the thread take-up lever (22) moves along the axial negative direction of the thread take-up lever shaft (21).
16. The thread take-up lever clutching device according to claim 15, wherein The end of the driving swing arm (12) is provided with a roller (121), the groove wall of the clamping groove (231) and the rolling surface of the roller (121) are in close contact when the clamping groove (231) and the end of the driving swing arm (12) are clamped and matched.
17. The thread take-up lever clutch apparatus according to claim 8, wherein The head (1) is provided with multiple and is arranged in transverse interval, the driving mechanism is provided with two, the push-pull rod (42) of one driving mechanism and the transmission swing lever (32) on the odd head (1) are in transmission connection, the push-pull rod (42) of the other driving mechanism and the transmission swing lever (32) on the even head (1) are in transmission connection.
18. The thread take-up lever clutch apparatus according to claim 8, wherein The head (1) is provided with multiple and is arranged in transverse interval, the driving mechanism is provided with one, the push-pull rod (42) of the driving mechanism and the transmission swing lever (32) on all heads (1) are in transmission connection.
19. An embroidery machine for disc band embroidery, characterized in that The thread take-up lever clutch device comprises the thread take-up lever clutch device according to any one of claims 1-18. The thread take-up lever clutch device comprises the thread take-up lever clutch device according to any one of claims 1-18.