High-speed embroidery machine head structure with adjusting connecting rod

Abstract

The utility model discloses a high-speed embroidery machine head structure with an adjusting connecting rod, a presser foot mechanism is arranged on a machine head, the presser foot mechanism comprises a driving shaft, an eccentric wheel, a first transmission piece and a presser foot, and the adjusting connecting rod and a presser foot driving piece are further arranged between the first transmission piece and the presser foot. According to the utility model, the first transmission piece and the presser foot driving piece which can generate deflection motion are connected by utilizing the adjusting connecting rod, so that high-speed rotating motion of the driving shaft can be converted into linear motion of the presser foot or small deflection motion within an allowable range through two times of eccentric transmission, and the aim of pressing and loosening embroidery cloth at proper time is fulfilled; the whole structure is small and exquisite, the occupied space is small, installation is convenient and fast, the problem that different machine heads limit different installation spaces of the adjusting connecting rod and the presser foot driving piece can be solved, the embroidery machine presser foot adjusting device can be conveniently applied to embroidery machines with different machine head structures, and the applicability is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of embroidery machines, in particular to a high-speed embroidery machine head structure with an adjusting connecting rod. Background Art

[0002] The machine head is an important supporting part of the embroidery machine, carrying the main moving parts in the embroidery process, such as the presser foot mechanism, color changing mechanism, and thread trimming mechanism. Among them, the presser foot mechanism mainly drives the presser foot to reciprocate in time to press or loosen the embroidery cloth, and cooperates with the color changing mechanism and thread trimming mechanism to embroider the appropriate color of embroidery thread on the embroidery cloth.

[0003] At present, the presser foot mechanism on the embroidery machine generally converts the rotational motion of the driving spindle into the intermittent up and down motion of the presser foot through the eccentric wheel / cam transmission; however, according to the eccentric wheel transmission process, the transmission end will have a deflection rather than a linear motion. Therefore, if the stroke of the presser foot at the end of the entire mechanism is to be ensured, the angle of rotation of the presser foot and the transmission member and the angle of rotation of the driving shaft will definitely deviate, and this deviation will cause the machine to move uncoordinated, resulting in the presser foot failing to tighten or loosen the embroidery cloth in time and causing quality problems such as embroidery position deviation and blurred embroidery thread trajectory. On the other hand, the current embroidery machine has been developing towards miniaturization. The space inside the machine is limited, and there is no extra space to install movable direction adjustment components. Therefore, the movement stroke of the presser foot of most small embroidery machines will deviate from the theoretical angle of rotation of the driving spindle. In actual production, most of them rely on reducing production efficiency (reducing the spindle speed) or relying on the experience of operators to make appropriate adjustments to improve the embroidery quality of the embroidery machine. Utility Model Content

[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides a high-speed embroidery machine head structure with an adjustment connecting rod. By utilizing the adjustment connecting rod to connect a first transmission member capable of eccentric motion and a presser foot driving member, the high-speed rotational motion of the driving shaft can be converted into a linear motion of the presser foot or a small eccentric motion within an allowable range through two successive eccentric transmissions, thereby achieving the purpose of timely pressing and loosening the embroidery cloth. In addition, the overall structure is compact, occupies less space, is easy to install, and has a wide range of applicability.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0006] A high-speed embroidery machine head structure with an adjustment connecting rod, the head is provided with a presser foot mechanism, a color changing mechanism and a thread trimming mechanism, the presser foot mechanism comprises a driving shaft, an eccentric wheel is sleeved on the driving shaft, a first transmission member is provided on the eccentric wheel, the first transmission member is connected to the presser foot by transmission, the driving shaft can drive the eccentric wheel to rotate and drive the presser foot to move up and down to press or loosen the embroidery cloth through the first transmission member; an adjustment connecting rod and a presser foot driving member are also provided between the first transmission member and the presser foot, wherein:

[0007] One end of the adjusting connecting rod is hinged to the first transmission member, and the other end is hinged to the presser foot driving member;

[0008] The presser foot driving component is a V-shaped structure and is hinged on the machine head. Its two ends are respectively hinged to the adjustment connecting rod and the presser foot. The middle part is a circular structure and is transmission-connected to the eccentric piece. The eccentric piece is installed on the machine head. The presser foot driving component can swing relative to the machine head under the action of external force and drive the presser foot thereon to move closer to or away from the embroidery cloth.

[0009] As a further elaboration of the above technical solution:

[0010] In the above technical solution, the first transmission member includes a transmission part and a connecting part, the connecting part is sleeved on the periphery of the eccentric wheel and is transmission-connected thereto, and the transmission part is hinged to the adjusting connecting rod.

[0011] In the above technical solution, the eccentric member includes a mounting shaft, one end of which is mounted on the machine head, and the other end is mounted on the middle of the presser foot driving member, and the central axes of the two do not overlap.

[0012] In the above technical solution, an eccentric hole is provided in the middle of the presser foot driving member, in which the mounting shaft is coaxially mounted, one end of the mounting shaft is rotatably connected to the eccentric hole or the machine head, and the other end is fixedly connected to the machine head or the eccentric hole.

[0013] In the above technical solution, the adjustment connecting rod includes a connecting rod body and a sliding rod which are slidably connected, are both linear structures and extend in the same direction: one end of the connecting rod body is provided with a first rotating member adapted to the first transmission member, and a hole groove extending in the same direction therewith is provided in its middle; one end of the sliding rod is provided with a second rotating member adapted to the presser foot driving member, and the other end penetrates from the other end of the connecting rod body and extends into the hole groove, and a limiting member is provided on its outer wall; the sliding rod can slide in the hole groove under the action of external force, and the limiting member can limit the sliding stroke of the sliding rod.

[0014] In the above technical solution, an elastic member is sleeved on the sliding rod between the limiting member and the side wall of the hole groove.

[0015] In the above technical solution, a second transmission member is further provided between the first transmission member and the adjusting connecting rod, and the second transmission member is hinged to the machine head, the first transmission member and the adjusting connecting rod.

[0016] In the above technical solution, the second transmission member is a V-shaped structure, a middle portion of which is hinged to the machine head, and two end portions of which are respectively hinged to the first transmission member and the adjusting connecting rod.

[0017] In the above technical solution, the second transmission member is a linear structure, one end of which is hinged to the machine head, the other end of which is hinged to the adjustment connecting rod, and the middle part of which is hinged to the first transmission member.

[0018] In the above technical solution, the adjustment link includes a first link and a second link of a direct structure, the first link, the second link and one end of the first transmission member are hinged together, the other end of the first link is hinged to the machine head, and the other end of the second link is hinged to one end of the presser foot driving member.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: by utilizing the adjusting connecting rod to connect the first transmission member capable of eccentric motion and the presser foot driving member, the high-speed rotational motion of the driving shaft can be converted into the linear motion of the presser foot or a small eccentric motion within an allowable range through two successive eccentric transmissions, so as to achieve the purpose of timely pressing and loosening the embroidery cloth, and the overall structure is compact, occupies less space, and is easy to install; by arranging the adjusting connecting rod as a retractable structure or an articulated structure, it is possible to change the transmission ratio of the two eccentric moving members or limit / guide the eccentric angle / direction of the two eccentric moving members, thereby solving the problem that different machine heads have different installation space limitations on the adjusting connecting rod and the presser foot driving member, so that it can be applied to embroidery machines with different machine head structures, and has a wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model (presser foot is not shown);

[0021] Figure 2 yes Figure 1 Structural diagram of the middle presser foot mechanism (presser foot not shown);

[0022] Figure 3 yes Figure 2 Schematic diagram of the mechanism of the middle adjustment connecting rod;

[0023] Figure 4 It is a structural schematic diagram of the second embodiment of the utility model (presser foot is not shown);

[0024] Figure 5 It is a structural schematic diagram of the third embodiment of the utility model (presser foot is not shown);

[0025] Figure 6 It is a structural schematic diagram of the fourth embodiment of the utility model (the presser foot is not shown).

[0026] In the figure: 20, presser foot mechanism; 30, color changing mechanism; 40, thread trimming mechanism; 50, machine head; 1, driving shaft; 2, eccentric wheel; 3, first transmission member; 31, transmission part; 32, connecting part; 4, adjusting connecting rod; 41, connecting rod body; 42, sliding rod; 43, first connecting rod; 44, second connecting rod; 401, first rotating member; 402, hole groove; 403, second rotating member; 404, limiting member; 405, elastic member; 5, presser foot driving member; 501, eccentric hole; 6, second transmission member; 7, eccentric member. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] like Figure 1-2 As shown, a high-speed embroidery machine head structure with an adjustment connecting rod, a presser foot mechanism 20, a color changing mechanism 30 and a thread trimming mechanism 40 are arranged on the head 50, the presser foot mechanism 20 comprises a driving shaft 1, an eccentric wheel 2 is sleeved on the driving shaft 1, a first transmission member 3 is arranged on the eccentric wheel 2, the first transmission member 3 is connected to the presser foot transmission, the driving shaft 1 can drive the eccentric wheel 2 to rotate and drive the presser foot to move up and down through the first transmission member 3 to press or loosen the embroidery cloth; an adjustment connecting rod 4 and a presser foot driving member 5 are also arranged between the first transmission member 3 and the presser foot, wherein:

[0030] One end of the adjusting connecting rod 4 is hinged to the first transmission member 3, and the other end is hinged to the presser foot driving member 5;

[0031] The presser foot driving member 5 is of a V-shaped structure and is hinged on the machine head 50. Its two ends are respectively hinged to the adjusting connecting rod 4 and the presser foot. The middle part is of a circular structure and is transmission-connected to the eccentric member 7. The eccentric member 7 is mounted on the machine head 50. The presser foot driving member 5 can swing relative to the machine head 50 under the action of external force and drive the presser foot thereon to move closer to or away from the embroidery cloth.

[0032] Further, such as Figure 2 As shown, the first transmission member 3 includes a transmission portion 31 and a connecting portion 32 . The connecting portion 32 is sleeved on the periphery of the eccentric wheel 2 and is transmission-connected thereto. The transmission portion 31 is hinged to the first rotating member 401 .

[0033] The utility model uses an adjusting connecting rod 4 to connect a first transmission member 3 capable of eccentric motion and a presser foot driving member 5, so that the high-speed rotational motion of the driving shaft 1 can be converted into a linear motion of the presser foot or a small eccentric motion within an allowable range through two successive eccentric transmissions, thereby achieving the purpose of timely pressing and loosening the embroidery cloth, and the overall structure is compact, occupies less space, and is easy to install.

[0034] Furthermore, the eccentric member 7 includes a mounting shaft, one end of which is mounted on the machine head 50, and the other end is mounted on the middle of the presser foot driving member 5, and the central axes of the two do not overlap; an eccentric hole 501 is provided in the middle of the presser foot driving member 5, and a mounting shaft is coaxially mounted therein, one end of the mounting shaft is rotatably connected to the eccentric hole 501 or the machine head 50, and the other end is fixedly connected to the machine head 50 or the eccentric hole 501.

[0035] like Figure 3 As shown, in the first embodiment of the utility model, the adjustment connecting rod 4 includes a connecting rod body 41 and a sliding rod 42 which are slidably connected and are both linear structures and extend in the same direction: one end of the connecting rod body 41 is provided with a first rotating member 401 adapted to the first transmission member 3, and a hole groove 402 extending in the same direction therewith is provided in the middle thereof; one end of the sliding rod 42 is provided with a second rotating member 403 adapted to the presser foot driving member 5, and the other end is penetrated from the other end of the connecting rod body 41 and extends into the hole groove 402, and a limiting member 404 is provided on the outer wall thereof; the sliding rod 42 can slide in the hole groove 402 under the action of external force, and the limiting member 404 can limit the sliding stroke of the sliding rod 42; an elastic member 405 is also sleeved on the sliding rod 42 between the limiting member 404 and the side wall of the hole groove 402.

[0036] In the first embodiment, the first rotating member 401 and the second rotating member 403 are both annular structures, each of which is equipped with a rotating shaft, and one end of the transmission part 31 and the presser foot driving member 5 is slidably sleeved on the rotating shaft; the elastic member 405 is a spring, and the limiting member 404 is a hole column that radially penetrates the sliding rod 42. The hole column can cooperate with the sliding rod 42 to limit the spring in the hole groove 402, and a limiting pin can also be installed in the hole column to further prevent the spring from leaving the set area.

[0037] During operation, the driving shaft 1 drives the eccentric wheel 2 to rotate, and the eccentric wheel 2 drives the connecting part 32 to rotate synchronously and eccentrically. The transmission part 31 cooperates with the first rotating part 401 to adjust the connecting rod 4 to rotate and pull it to swing back and forth within a certain range at the same time, pulling the connecting rod body 41 away from the slide bar 42 and compressing the elastic member 405 or approaching the slide bar 42 under the push of the elastic member 405 rebound force. The slide bar 42 pulls the presser foot driving member 5 to swing relative to the machine head 50, driving the presser foot thereon to move linearly or slightly swing to move away from or press the embroidery cloth. In application, by reasonably setting the eccentric distance of the eccentric hole 501 and adjusting the telescopic distance of the connecting rod 4 (i.e., selecting the elastic member 405 with appropriate elastic force parameters), the rotational movement of the driving shaft 1 can be converted into driving the presser foot to move linearly or slightly swing within the allowable range through the eccentric transmission of the first transmission member 3 and the presser foot driving member 5 twice in succession, so as to achieve the purpose of pressing and loosening the embroidery cloth in time.

[0038] In this embodiment, an adjustment connecting rod 4 is provided to connect the first transmission member 3 and the presser foot driving member 5. The fixed transmission ratio between the first transmission member 3 and the presser foot driving member 5 can be changed by changing the length of the adjustment connecting rod 4. The size change of the adjustment connecting rod 4 can be adaptively changed with the size of the external force, which can solve the problem of difficulty in reconciling the size of the presser foot driving member 5 and the installation position due to the layout limitation of the machine head 50. It occupies less space and is easy to install.

[0039] like Figure 4 As shown, in the second embodiment of the utility model, a second transmission member 6 is further provided between the first transmission member 3 and the adjusting link 4, and the second transmission member 6 is hinged to the machine head 50, the first transmission member 3 and the adjusting link 4; the second transmission member 6 is a V-shaped structure, the middle part of which is hinged to the machine head 50, and the two ends of which are respectively hinged to the first transmission member 3 and the adjusting link 4.

[0040] like Figure 5 As shown, in the third embodiment of the utility model, the second transmission member 6 is a linear structure, one end of which is hinged to the machine head 50, the other end of which is hinged to the adjustment link 4, and the middle part of which is hinged to the first transmission member 3.

[0041] It can be understood that the second transmission member 6 disposed at the front end of the adjustment link 4 in the second embodiment and the third embodiment can reduce the torque applied to the adjustment link 4 under the high-speed driving of the main shaft, and can further fine-tune the transmission direction, so as to achieve the purpose of ensuring the action stroke of the presser foot and reducing its deflection amplitude. In application, the middle or end of the second transmission member 6 can be used as the fulcrum of its rotation according to the actual structure and layout of the machine head, and installed on the rear wall and side wall of the machine head 50 to adapt to the machine head 50 with different structural layouts and meet the transmission needs.

[0042] like Figure 6 As shown, in the fourth embodiment of the utility model, the adjustment link 4 includes a first link 43 and a second link 44 of a direct structure, the first link 43, the second link 44 and one end of the first transmission member 3 are hinged together, the other end of the first link 43 is hinged to the machine head 50, and the other end of the second link 44 is hinged to one end of the presser foot driving member 5.

[0043] In this embodiment, the adjustment link 4 is set as a hinged first link 43 and a second link 44. The first link 43 can limit and guide the swing angle and direction of the first transmission member 3, and the second link 44 can limit and guide the swing angle and direction of the presser foot driving member 5, so as to finally achieve the purpose of driving the presser foot connected to the presser foot driving member 5 to move linearly or to move a small swing within the allowable range, and the installation is convenient.

[0044] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high-speed embroidery machine head structure with an adjustment connecting rod, wherein a presser foot mechanism, a color changing mechanism and a thread trimming mechanism are arranged on the head, wherein the presser foot mechanism comprises a driving shaft, an eccentric wheel is sleeved on the driving shaft, a first transmission member is arranged on the eccentric wheel, the first transmission member is connected to the presser foot by transmission, the driving shaft can drive the eccentric wheel to rotate and drive the presser foot to move up and down through the first transmission member to press or loosen the embroidery cloth; characterized in that: An adjusting connecting rod and a presser foot driving member are also provided between the first transmission member and the presser foot, wherein: One end of the adjusting connecting rod is hinged to the first transmission member, and the other end is hinged to the presser foot driving member; The presser foot driving component is a V-shaped structure and is hinged on the machine head. Its two ends are respectively hinged to the adjustment connecting rod and the presser foot. The middle part is a circular structure and is transmission-connected to the eccentric piece. The eccentric piece is installed on the machine head. The presser foot driving component can swing relative to the machine head under the action of external force and drive the presser foot thereon to move closer to or away from the embroidery cloth.

2. The high-speed embroidery machine head structure with an adjustment connecting rod according to claim 1, characterized in that: The first transmission member comprises a transmission part and a connection part, wherein the connection part is sleeved on the periphery of the eccentric wheel and is transmission-connected thereto, and the transmission part is hinged to the adjustment connecting rod.

3. The high-speed embroidery machine head structure with an adjustment connecting rod according to claim 1, characterized in that: The eccentric member comprises a mounting shaft, one end of which is mounted on the machine head, and the other end is mounted on the middle of the presser foot driving member, and the central axes of the two do not overlap.

4. The high-speed embroidery machine head structure with an adjustment connecting rod according to claim 3, characterized in that: An eccentric hole is provided in the middle of the presser foot driving member, in which the mounting shaft is coaxially mounted, one end of the mounting shaft is rotatably connected to the eccentric hole or the machine head, and the other end is fixedly connected to the machine head or the eccentric hole.

5. A high-speed embroidery machine head structure with an adjustment connecting rod according to any one of claims 1 to 4, characterized in that: The adjustment connecting rod includes a connecting rod body and a sliding rod which are slidably connected, are both linear structures and extend in the same direction: one end of the connecting rod body is provided with a first rotating member adapted to the first transmission member, and a hole groove extending in the same direction therewith is provided in its middle; one end of the sliding rod is provided with a second rotating member adapted to the presser foot driving member, and the other end penetrates from the other end of the connecting rod body and extends into the hole groove, and a limiting member is provided on its outer wall; the sliding rod can slide in the hole groove under the action of external force, and the limiting member can limit the sliding stroke of the sliding rod.

6. The high-speed embroidery machine head structure with an adjustment connecting rod according to claim 5, characterized in that: An elastic member is sleeved on the sliding rod between the limiting member and the side wall of the hole groove.

7. The high-speed embroidery machine head structure with an adjustment connecting rod according to claim 6, characterized in that: A second transmission member is further provided between the first transmission member and the adjusting connecting rod, and the second transmission member is hinged to the machine head, the first transmission member and the adjusting connecting rod.

8. The high-speed embroidery machine head structure with an adjustment connecting rod according to claim 7, characterized in that: The second transmission member is a V-shaped structure, the middle portion of which is hinged to the machine head, and the two ends of which are respectively hinged to the first transmission member and the adjusting connecting rod.

9. The high-speed embroidery machine head structure with an adjustment connecting rod according to claim 7, characterized in that: The second transmission member is a linear structure, one end of which is hinged to the machine head, the other end of which is hinged to the adjustment connecting rod, and the middle part of which is hinged to the first transmission member.

10. A high-speed embroidery machine head structure with an adjustment connecting rod according to any one of claims 1 to 4, characterized in that: The adjustment link includes a first link and a second link of a direct structure, wherein the first link, the second link and one end of the first transmission member are hinged together, the other end of the first link is hinged to the machine head, and the other end of the second link is hinged to one end of the presser foot driving member.

Images