Connecting structure and machine head of computerized embroidery machine

Abstract

The application discloses a connecting structure and a machine head of a computerized embroidery machine. The connecting structure is in a circumferentially closed shape, forms a stable rigid system through a beam component, can effectively bear various load types such as bending, torsion, shearing and the like, and is especially suitable for a dynamic load scene. The first and second hoop structures are simultaneously stressed, and are arranged in a left-right direction with a spacing. The left and right sides of the connecting structure are subjected to forces, so that the left and right sides of the connecting structure are balanced in stress, thereby helping the connecting structure to stably operate and adapt to high-speed operation of the first needle bar driver and the second needle bar driver. Meanwhile, the connecting structure is inhibited from being worn due to unbalanced stress on the left and right sides, and the service life of the connecting structure is prolonged.

Description

Technical Field

[0001] This utility model generally relates to the field of computerized embroidery machine technology, and more particularly to a connecting structure and a machine head for a computerized embroidery machine. Background Technology

[0002] In related technologies, the head of a double-needle driven embroidery machine uses a single needle bar to drive a cam to synchronously drive the two needles for double-needle embroidery.

[0003] The needle bar drive cam is mounted on the machine head housing. The needle bar drive cam is connected to a large connecting rod, which is connected to two needle bar drivers via T-shaped drive connecting rods. These two needle bar drivers drive two needle bars to move up and down. In this structure, the T-shaped drive connecting rod is located on one side of the large connecting rod. This means that during the driving of the two needle bars, if the force is uneven, the T-shaped drive connecting rod is prone to twisting, and may even lead to mechanical accidents such as the large connecting rod breaking. Utility Model Content

[0004] This utility model provides a connection structure, including a body, which is a circumferentially closed shape; the body is provided with a first clamping structure and a second clamping structure located on the same side of the circumferentially closed shape and spaced apart; the body is also provided with an installation structure located on the other side of the circumferentially closed shape and arranged opposite to the first clamping structure or the second clamping structure.

[0005] As an implementation method, the circumferential closed shape includes a frame shape, including a first side beam and a second side beam arranged opposite to each other, the two ends of the first side beam extending outward to form a first clamp structure and a second clamp structure respectively; the second side beam extends outward to form the mounting structure, the mounting structure being a hinge hole.

[0006] As an alternative implementation, the frame shape further includes a third side beam and a fourth side beam arranged opposite to each other, the third side beam and the fourth side beam having equal lengths.

[0007] As an alternative implementation, the length of the hinge hole is greater than the length of the second side beam.

[0008] The above-mentioned solution, in this application, uses a circumferentially closed connecting structure to form a stable rigid system through beam components, which can effectively withstand various load types such as bending, torsion, and shear, and is especially suitable for dynamic load scenarios; the first clamp structure and the second clamp structure are subjected to force simultaneously, and the two are arranged at intervals in the left and right directions, so that the left and right sides of the connecting structure are subjected to force, making the force on the left and right sides of the connecting structure balanced, thereby helping the connecting structure to operate stably and adapting to the high-speed operation of the first needle rod actuator and the second needle rod actuator; at the same time, it suppresses the wear of the connecting structure caused by the uneven force on the left and right sides, and extends the service life of the connecting structure.

[0009] This utility model also provides a head for a computerized embroidery machine, comprising: a cam connecting rod, a first needle bar driver, a first guide shaft sleeved on the first needle bar driver, a second needle bar driver, a second guide shaft sleeved on the second needle bar driver, and the above-mentioned connecting structure.

[0010] Both the first guide shaft and the second guide shaft are arranged in a vertical direction, and the cam connecting rod is connected to the middle position of the connecting structure; the first needle bar driver is correspondingly arranged with the first clamping structure, and the first clamping structure drives the first needle bar driver to reciprocate on the first guide shaft; the second needle bar driver is correspondingly arranged with the second clamping structure, and the second clamping structure drives the second needle bar driver to reciprocate on the second guide shaft.

[0011] In one possible configuration, a first connecting rod is provided between the first needle bar driver and the first clamping structure, and the first connecting rod connects the two; a second connecting rod is provided between the second needle bar driver and the second clamping structure, and the second connecting rod connects the two.

[0012] In one possible implementation, it also includes a first linkage assembly and a first presser foot driver sleeved on the first guide shaft. The first needle bar driver and the first presser foot driver are arranged vertically. One end of the first linkage assembly is hinged to the housing of the machine head, and the other end is connected to the first presser foot driver and the first needle bar driver respectively.

[0013] In one possible implementation, it also includes a second linkage assembly and a second presser foot driver sleeved on the second guide shaft. The second needle bar driver and the second presser foot driver are arranged vertically. One end of the second linkage assembly is hinged to the housing of the machine head, and the other end is connected to the second presser foot driver and the second needle bar driver respectively.

[0014] In the above-described solution, during the disassembly of the connecting structure, only the connection between the first clamp structure and the first connecting rod, the connection between the second clamp structure and the second connecting rod, and the connection at the connecting hole need to be disassembled. The disassembly process is simple and convenient, reducing the labor intensity of the operators and shortening the disassembly time. It avoids disassembling the connection between the first connecting rod assembly and the first presser foot driver and the first needle rod driver, and avoids disassembling the connection between the second connecting rod assembly and the second presser foot driver and the second needle rod driver. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1A schematic diagram of a connection structure provided in an embodiment of this utility model;

[0017] Figure 2 A schematic diagram of the head of a computerized embroidery machine provided for an embodiment of this utility model;

[0018] Figure 3 A schematic diagram of the explosion of the machine head of a computerized embroidery machine provided for an embodiment of this utility model. Figure 1 ;

[0019] Figure 4 A schematic diagram of the explosion of the machine head of a computerized embroidery machine provided for an embodiment of this utility model. Figure 2 ;

[0020] Connection structure 10, first side beam 11, second side beam 12, third side beam 13, fourth side beam 14, first clamp structure 101, second clamp structure 102, mounting structure 103, connecting hole 104, hollow area 105;

[0021] Cam link 20;

[0022] First needle bar driver 31, second needle bar driver 32, first connecting rod 41, second connecting rod 42, first guide shaft 51, second guide shaft 52;

[0023] First link assembly 61, first three-eye link 611, first two-eye link 612 and second two-eye link 613, second link assembly 62, second three-eye link 621, third two-eye link 622, and fourth two-eye link 623;

[0024] First presser foot driver 71, second presser foot driver 72. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] This application provides a head for a computerized embroidery machine, such as... Figure 2As shown, the machine head includes a housing, an eccentric cam, a cam connecting rod 20, a first needle bar driver 31, a first guide shaft 51 sleeved on the first needle bar driver 31, a second needle bar driver 32, a second guide shaft 52 sleeved on the second needle bar driver 32, and a connecting structure 10. The eccentric cam, cam connecting rod 20, first needle bar driver 31, first guide shaft 51, second needle bar driver 32, second guide shaft 52, and connecting structure 10 are all located inside the housing.

[0028] An eccentric cam is mounted on an upper shaft. The rotation of the upper shaft drives the eccentric cam to rotate. One end of the cam connecting rod 20 is mounted on the eccentric cam, and the eccentric cam drives the cam connecting rod 20 to move. The first guide shaft 51 and the second guide shaft 52 are both arranged in the vertical direction. The eccentric cam, the cam connecting rod 20 and the connecting structure 10 are located between the first guide shaft 51 and the second guide shaft 52.

[0029] The connecting structure 10 includes a body, which is a circumferentially closed shape. The body is provided with a first clamping structure 101 and a second clamping structure 102, both located on the same side of the circumferentially closed shape and spaced apart. The body also includes a mounting structure 103, located on the other side of the circumferentially closed shape, opposite to either the first clamping structure 101 or the second clamping structure 102.

[0030] like Figure 1 As shown, the circumferential closed shape includes, but is not limited to, a frame shape, including a first side beam 11, a second side beam 12, a third side beam 13, and a fourth side beam 14. The first side beam 11 and the second side beam 12 are arranged opposite each other, front and back; the third side beam 13 and the fourth side beam 14 are arranged opposite each other, left and right.

[0031] The two ends of the first side beam 11 extend outward to form a first clamping structure 101 and a second clamping structure 102, which are spaced apart in the left-right direction. The second side beam 12 extends outward to form a mounting structure 103, which is located on the rear side of the frame. The mounting structure 103 may include, but is not limited to, hinge holes, and the axis of the hinge holes extends parallel to the direction from the first clamping structure 101 to the second clamping structure 102.

[0032] like Figure 1As shown, the frame shape has a hollow area 105 in the middle. The other end of the cam connecting rod 20 is connected to the hollow area 105. For example, the third side beam 13 and the fourth side beam 14 are respectively provided with connecting holes 104. The two connecting holes 104 are coaxially arranged. The other end of the cam connecting rod 20 is provided in the hollow area 105. The hinge shaft passes through the connecting hole 104 and the other end of the cam connecting rod 20, so that the other end of the cam connecting rod 20 is hinged to the hollow area 105. In this way, the cam connecting rod 20 can drive the connecting structure 10 to move.

[0033] It should be noted that the mounting structure 103 is a hinge hole through which the hinge shaft passes, and both ends of the hinge shaft are mounted on the housing. Driven by the cam connecting rod 20, the first clamping structure 101 and the second clamping structure 102 swing up and down relative to the axis of the hinge shaft or the hinge hole.

[0034] The hollow area 105 is adapted to the other end of the cam connecting rod 20, that is, the other end of the cam connecting rod 20 can be inserted into the hollow area 105. This can minimize the distance between the third side beam 13 and the fourth side beam 14, thereby contributing to the miniaturization of the entire connection structure 10.

[0035] The first needle bar driver 31 is correspondingly arranged with the first clamping structure 101. The first clamping structure 101 drives the first needle bar driver 31 to reciprocate on the first guide shaft 51. The second needle bar driver 32 is correspondingly arranged with the second clamping structure 102. The second clamping structure 102 drives the second needle bar driver 32 to reciprocate on the second guide shaft 52.

[0036] In detail, such as Figures 2-4 As shown, a first connecting rod 41 is provided between the first needle bar driver 31 and the first clamping structure 101. One end of the first connecting rod 41 is hinged to the first needle bar driver 31, and the other end is hinged to the first clamping structure 101. A second connecting rod 42 is provided between the second needle bar driver 32 and the second clamping structure 102. One end of the second connecting rod 42 is hinged to the second needle bar driver 32, and the other end is hinged to the second clamping structure 102.

[0037] Driven by the cam link 20, the first clamping structure 101 of the connecting structure 10 swings up and down. The first clamping structure 101 drives the first needle bar driver 31 to reciprocate along the first guide shaft 51 via the first link 41. Simultaneously, the second clamping structure 102 of the connecting structure 10 swings up and down. The second clamping structure 102 drives the second needle bar driver 32 to reciprocate along the second guide shaft 52 via the second link 42. The first needle bar driver 31 and the second needle bar driver 32 move synchronously.

[0038] Since the connecting structure 10 is a frame shape, the frame shape forms a stable rigid system through the beam members, which can effectively withstand various load types such as bending, torsion, and shear, and is especially suitable for dynamic load scenarios; the first clamp structure 101 and the second clamp structure 102 are subjected to force at the same time, and the two are arranged at intervals in the left and right directions. The connecting structure 10 is subjected to force on the left and right sides, so that the force on the left and right sides of the connecting structure 10 is balanced, which helps the connecting structure 10 to operate stably and is suitable for the high-speed operation of the first needle rod driver 31 and the second needle rod driver 32.

[0039] Optionally, such as Figure 1 As shown, the first side beam 11 and the second side beam 12 are of equal length, and the third side beam 13 and the fourth side beam 14 are of equal length. The frame shape can be rectangular. This further helps to balance the forces on the left and right sides of the connecting structure 10, suppresses wear on the connecting structure 10 caused by uneven forces on the left and right sides, and extends the service life of the connecting structure 10.

[0040] Optionally, such as Figure 1 As shown, the length of the hinge hole is greater than the length of the second side beam 12. The longer hinge hole can increase the contact area with the hinge shaft, thereby distributing the load, reducing local stress concentration in the hinge hole, avoiding deformation or wear caused by local overload, and helping to extend the service life of the connection structure 10.

[0041] The machine head also includes a first connecting rod assembly 61 and a first presser foot driver 71 sleeved on the first guide shaft 51. The first needle bar driver 31 and the first presser foot driver 71 are arranged vertically. One end of the first connecting rod assembly 61 is hinged to the machine housing, and the other end is connected to the first presser foot driver 71 and the first needle bar driver 31 respectively.

[0042] In detail, such as Figure 3 and Figure 4 As shown, the first linkage assembly 61 includes a first three-eye linkage 611, a first two-eye linkage 612, and a second two-eye linkage 613. One eye of the first three-eye linkage 611 is connected to the housing via a hinge shaft, and the remaining two eyes are connected to the first two-eye linkage 612 and the second two-eye linkage 613 via hinge shafts, respectively. The first two-eye linkage 612 is connected to the first needle bar driver 31, and the second two-eye linkage 613 is connected to the first presser foot driver 71. It should be noted that the first linkage assembly 61 includes, but is not limited to, the first three-eye linkage 611, the first two-eye linkage 612, and the second two-eye linkage 613; however, these will not be described in detail in this embodiment.

[0043] Thus, driven by the first needle bar driver 31, the first two-eye connecting rod 612 drives the first three-eye connecting rod 611 to move, the first three-eye connecting rod 611 drives the second two-eye connecting rod 613 to move, and the second two-eye connecting rod 613 causes the first presser foot driver 71 to reciprocate along the first guide shaft 51.

[0044] The machine head also includes a second linkage assembly 62 and a second presser foot driver 72 sleeved on the second guide shaft 52. The second needle bar driver 32 and the second presser foot driver 72 are arranged vertically. One end of the second linkage assembly 62 is hinged to the machine head housing, and the other end is connected to the second presser foot driver 72 and the second needle bar driver 32 respectively.

[0045] In detail, such as Figure 3 and Figure 4 As shown, the second linkage assembly 62 includes a second three-eye link 621, a third two-eye link 622, and a fourth two-eye link 623. One eye of the second three-eye link 621 is connected to the housing via a hinge shaft, and the remaining two eyes are connected to the third two-eye link 622 and the fourth two-eye link 623 via hinge shafts, respectively. The third two-eye link 622 is connected to the second needle bar driver 32, and the fourth two-eye link 623 is connected to the second presser foot driver 72. It should be noted that the second linkage assembly 62 includes, but is not limited to, the second three-eye link 621, the third two-eye link 622, and the fourth two-eye link 623, which will not be described in detail in this embodiment.

[0046] Thus, driven by the second needle rod driver 32, the third two-eye connecting rod 622 drives the second three-eye connecting rod 621 to move, the second three-eye connecting rod 621 drives the fourth two-eye connecting rod 623 to move, and the fourth two-eye connecting rod 623 causes the second presser foot driver 72 to reciprocate along the second guide shaft 52.

[0047] In practical applications, considering the high-speed movement of the first presser foot driver 71, the first needle bar driver 31, the second presser foot driver 72, and the second needle bar driver 32, the connecting structure 10 requires regular maintenance and upkeep, thus necessitating frequent disassembly of the connecting structure 10. However, in related technologies, the space between the first guide shaft 51 and the second guide shaft 52 is limited, making the disassembly of the connecting structure 10 time-consuming and labor-intensive, which is detrimental to maintenance.

[0048] In this embodiment, as Figure 3 and Figure 4 As shown, during the disassembly of the connecting structure 10, only the connection between the first clamp structure 101 and the first connecting rod 41, the connection between the second clamp structure 102 and the second connecting rod 42, and the connection at the connecting hole 104 need to be disassembled. The disassembly process is simple and convenient, reducing the labor intensity of the operators and shortening the disassembly time. It avoids disassembling the connection between the first connecting rod assembly 61 and the first presser foot driver 71 and the first needle rod driver 31, and avoids disassembling the connection between the second connecting rod assembly 62 and the second presser foot driver 72 and the second needle rod driver 32.

[0049] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0050] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A connecting structure (10) installed on the head of a computerized embroidery machine, characterized in that, include: The body is a circumferentially closed shape; The main body is provided with a first clamp structure (101) and a second clamp structure (102) located on the same side of the circumferential closed shape, and the two are spaced apart; The main body is also provided with an installation structure (103), which is located on the other side of the circumferential closed shape and is disposed opposite to the first clamp structure (101) or the second clamp structure (102).

2. The connection structure (10) according to claim 1, characterized in that, The circumferential closed shape includes a frame shape, including a first side beam (11) and a second side beam (12) arranged opposite to each other. The two ends of the first side beam (11) extend outward and form the first clamp structure (101) and the second clamp structure (102), respectively. The second side beam (12) extends outward and forms the mounting structure (103), which is a hinge hole.

3. The connection structure (10) according to claim 2, characterized in that, The frame shape also includes a third side beam (13) and a fourth side beam (14) arranged opposite to each other, the third side beam (13) and the fourth side beam (14) having the same length.

4. The connection structure (10) according to claim 2, characterized in that, The length of the hinge hole is greater than the length of the second side beam (12).

5. A machine head for a computerized embroidery machine, characterized in that, include: The cam link (20), the first needle bar driver (31), the first guide shaft (51) sleeved on the first needle bar driver (31), the second needle bar driver (32), the second guide shaft (52) sleeved on the second needle bar driver (32), and the connection structure (10) according to any one of claims 1-4. The first guide shaft (51) and the second guide shaft (52) are both arranged in the vertical direction, and the cam connecting rod (20) is connected to the middle position of the connecting structure (10); The first needle bar driver (31) is correspondingly arranged with the first clamp structure (101), and the first clamp structure (101) drives the first needle bar driver (31) to reciprocate on the first guide shaft (51); The second needle bar driver (32) is correspondingly arranged with the second clamping structure (102), and the second clamping structure (102) drives the second needle bar driver (32) to reciprocate on the second guide shaft (52).

6. The machine head of the computerized embroidery machine according to claim 5, characterized in that, A first connecting rod (41) is provided between the first needle bar driver (31) and the first clamping structure (101), and the first connecting rod (41) connects the two; a second connecting rod (42) is provided between the second needle bar driver (32) and the second clamping structure (102), and the second connecting rod (42) connects the two.

7. The machine head of the computerized embroidery machine according to claim 5, characterized in that, It also includes a first connecting rod assembly (61) and a first presser foot driver (71) sleeved on the first guide shaft (51), wherein the first needle bar driver (31) and the first presser foot driver (71) are arranged vertically. One end of the first linkage assembly (61) is hinged to the housing of the machine head, and the other end is connected to the first presser foot driver (71) and the first needle bar driver (31).

8. The machine head of the computerized embroidery machine according to claim 5, characterized in that, It also includes a second connecting rod assembly (62) and a second presser foot driver (72) sleeved on the second guide shaft (52), wherein the second needle bar driver (32) and the second presser foot driver (72) are arranged vertically. One end of the second linkage assembly (62) is hinged to the housing of the machine head, and the other end is connected to the second presser foot driver (72) and the second needle bar driver (32).

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