A U-shaped template device and a three-dimensional pattern machine

Abstract

This invention discloses a U-shaped template device, including a first mounting base, an X-axis translation base, a first driving mechanism, a Y-axis rotating base, and a rotational transmission mechanism. The first driving mechanism drives the X-axis translation base to translate along the X-axis. The rotational transmission mechanism is connected between the first driving mechanism and the Y-axis rotating base, so as to drive the Y-axis rotating base to rotate around the Y-axis under the drive of the first driving mechanism. This U-shaped template device uses only one driving mechanism to drive the U-shaped template to translate along the X-axis and rotate around the Y-axis. This invention also discloses a three-dimensional pattern machine, including the above-mentioned U-shaped template device.

Description

Technical Field

[0001] This invention relates to the field of sewing machines, and more particularly to a U-shaped template device and a three-dimensional pattern machine. Background Technology

[0002] A 3D computer pattern sewing machine is a special sewing machine used for sewing patterns onto the upper fabrics of shoes, slippers, and other footwear with a certain degree of curvature.

[0003] There are two types of template mechanisms used in 3D computer-controlled pattern making machines: arc-shaped template mechanisms and U-shaped template mechanisms. For 3D computer-controlled pattern making machines using U-shaped template mechanisms, there are typically three sets of drive mechanisms: one drive mechanism drives the U-shaped template mechanism to translate along the X-axis, one drive mechanism drives the U-shaped template mechanism to translate along the Y-axis, and one drive mechanism drives the U-shaped template mechanism to rotate around the Y-axis. These three sets of drive mechanisms result in high manufacturing and maintenance costs, complex structure, and large space occupation for 3D computer-controlled pattern making machines. Summary of the Invention

[0004] To address the shortcomings of the prior art, the present invention provides a U-shaped template device and a three-dimensional pattern machine, which can drive the U-shaped template mechanism to translate along the X-axis and rotate around the Y-axis using a single drive mechanism.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solution:

[0006] A U-shaped template device, comprising:

[0007] First mounting base;

[0008] An X-axis translation base and a first driving mechanism are provided. The X-axis translation base is movably mounted on the first mounting base, and the first driving mechanism is connected to drive the X-axis translation base to translate along the X-axis.

[0009] A Y-axis rotating base and a rotary transmission mechanism are provided. The Y-axis rotating base is rotatably mounted on the X-axis translation base. The rotary transmission mechanism is connected between the first driving mechanism and the Y-axis rotating base so that the Y-axis rotating base can be driven by the first driving mechanism to rotate around the Y-axis.

[0010] The U-shaped template mechanism is set on the Y-axis rotating base and has a first sewing plane, a second sewing plane and a sewing arc surface. The first sewing plane and the second sewing plane are respectively connected to the two sides of the sewing arc surface along the X-axis. The sewing arc surface is centered on the rotation center of the Y-axis rotating base.

[0011] Furthermore, the first driving mechanism includes a first driving source, an X-axis threaded screw, a screw nut, a connecting block, a connecting slide, and a first X-axis guide rail. The X-axis threaded screw is rotatably mounted on the first mounting base. The first driving source drives the X-axis threaded screw to rotate. The screw nut is helically connected to the X-axis threaded screw. One end of the connecting block is rotatably connected to the screw nut, and the other end is fixedly connected to the connecting slide. The connecting slide is movably connected to the first mounting base via the first X-axis guide rail, and the X-axis translational base is mounted on the connecting slide.

[0012] Furthermore, the rotary transmission mechanism includes a first gear, a second gear, a Y-axis rotating shaft, a third gear, and a fourth gear. The Y-axis rotating shaft is rotatably mounted on the connecting slide. The first gear is coaxially surrounding the X-axis threaded screw and is fixedly connected to the screw nut. The second gear is coaxially mounted on one end of the Y-axis rotating shaft and meshes with the first gear. The third gear is coaxially mounted on the other end of the Y-axis rotating shaft and meshes with the fourth gear. The Y-axis rotating base is coaxially mounted on the fourth gear.

[0013] Furthermore, the first gear and the second gear are mating bevel gears, the third gear is a cylindrical external gear, and the fourth gear is a ring internal gear that meshes with the third gear.

[0014] Furthermore, the first gear and the connecting block are connected to the lead screw nut via a shaft coupling; the shaft coupling includes a shaft coupling sleeve and a fixing ring, the shaft coupling sleeve is coaxially wrapped around the X-axis threaded lead screw, one end of which is provided with a peripheral limiting part, and the other end is fixedly connected to the fixing ring; the lead screw nut is fixedly connected to the side of the fixing ring facing away from the shaft coupling sleeve, and the first gear is fixedly connected to the side of the shaft coupling sleeve facing away from the fixing ring; the end of the connecting block connected to the lead screw nut is wrapped around the shaft coupling sleeve, and is rotatably connected to the peripheral limiting part and the fixing ring on both sides along the X-axis via a first bearing and a second bearing, respectively.

[0015] Furthermore, the Y-axis rotating base includes a rotating body, a third bearing, and an outer panel. The rotating body is rotatably connected to the X-axis translational base via the third bearing. The outer panel is fixedly disposed on the side of the rotating body facing away from the first mounting base. The fourth gear is fixedly disposed on the side of the rotating body facing the first mounting base. The U-shaped template mechanism is fixedly disposed on the outer panel.

[0016] Furthermore, the first mounting base has a limiting groove on the side facing the Y-axis rotating base. The limiting groove includes a first linear groove, a second linear groove, and an arc-shaped groove. The arc-shaped groove connects the first linear groove and the second linear groove, and the arc-shaped groove is centered on the rotation center of the Y-axis rotating base. The first linear groove and the second linear groove are parallel to the X-axis and are symmetrical about the rotation center of the Y-axis rotating base. A first limiting member is provided on the circumference of the Y-axis rotating base facing the first mounting base. The first limiting member extends into the limiting groove and can move along the limiting groove.

[0017] The Y-axis rotating base has a limiting slot with a U-shaped inner wall on the side facing the first mounting base. The U-shaped inner wall includes a first linear inner wall, a second linear inner wall, and an arc-shaped inner wall. The first linear inner wall and the second linear inner wall are respectively connected to the two sides of the arc-shaped inner wall, and the arc-shaped inner wall is centered on the rotation center of the Y-axis rotating base. The first mounting base has a second limiting member on the side facing the Y-axis rotating base. The second limiting member extends into the limiting slot and can move along the U-shaped inner wall of the limiting slot.

[0018] Furthermore, when the first driving mechanism drives the U-shaped template mechanism to rotate so that the first sewing plane or the second sewing plane faces the sewing head of the three-dimensional pattern machine along the Z-axis, the first limiting member moves into the first linear groove or the second linear groove. At the same time, the limiting groove hole rotates so that its central axis is parallel to the X-axis, and the second limiting member abuts against the first linear inner wall surface or the second linear inner wall surface of the limiting groove hole. When the first driving mechanism drives the U-shaped template mechanism to rotate so that the sewing arc surface faces the sewing head of the three-dimensional pattern machine along the Z-axis, the limiting groove hole rotates so that its central axis intersects the X-axis. The second limiting member abuts against the arc-shaped inner wall surface of the limiting groove hole, and at the same time, the first limiting member moves into the arc-shaped groove.

[0019] Furthermore, the U-shaped template device also includes:

[0020] Second mounting base;

[0021] Y-axis translation base and second drive mechanism, wherein the Y-axis translation base is movably disposed on the second mounting base, and the second drive mechanism is connected to drive the Y-axis translation base to translate along the Y-axis;

[0022] The first mounting base is disposed on the Y-axis translation base.

[0023] A three-dimensional pattern making machine includes a sewing machine table, a sewing machine head, a rotary hook device, and the aforementioned U-shaped template device. The sewing machine head, the rotary hook device, and the U-shaped template device are all disposed on the sewing machine table, and the rotary hook device and the U-shaped template device are located below the sewing machine head along the Z-axis, while the U-shaped template device surrounds the rotary hook device.

[0024] The present invention has the following beneficial effects: The U-shaped template device of the present invention, by setting the rotary transmission mechanism between the first driving mechanism and the Y-axis rotating base, converts the X-axis translational driving force output by the first driving mechanism to the X-axis translational base into the Y-axis rotational driving force, and provides it to the Y-axis rotating base. This allows the first driving mechanism to drive the Y-axis rotating base and the U-shaped template mechanism located on the Y-axis rotating base to translate along the X-axis by driving the X-axis translational base to translate, and also to drive the U-shaped template mechanism to rotate around the Y-axis by driving the Y-axis rotating base to rotate. This achieves the purpose of driving the U-shaped template mechanism to translate along the X-axis and rotate around the Y-axis with a single driving mechanism. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the U-shaped template device provided by the present invention.

[0026] Figure 2 This is an exploded structural diagram of the first driving mechanism and the rotary transmission mechanism in the U-shaped template device provided by the present invention.

[0027] Figure 3 This is an exploded structural diagram of the various components on the X-direction threaded screw in the U-shaped template device provided by the present invention.

[0028] Figure 4 This is an exploded structural diagram of the Y-axis rotating base in the U-shaped template device provided by the present invention.

[0029] Figure 5 This is a front structural diagram of the first mounting base in the U-shaped template device provided by the present invention.

[0030] Figure 6 This is an exploded structural diagram of the second limiting member of the first mounting base and the limiting slot of the Y-axis rotating base in the U-shaped template device provided by the present invention.

[0031] Figure 7 This is a three-dimensional structural diagram of another U-shaped template device provided by the present invention.

[0032] Figure 8 This is a three-dimensional structural diagram of the second driving mechanism in another U-shaped template device provided by the present invention.

[0033] Figure 9 This is a schematic diagram of the three-dimensional structure of the three-dimensional pattern machine provided by the present invention. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0036] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this invention, "multiple" means two or more, unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] Example 1

[0039] like Figure 1 and 2 As shown, a U-shaped template device includes:

[0040] First mounting base 41;

[0041] X-axis translation base 42 and first drive mechanism 43, wherein the X-axis translation base 42 is movably disposed on the first mounting base 41, and the first drive mechanism 43 is connected to drive the X-axis translation base 42 to translate along the X-axis;

[0042] Y-axis rotating base 44 and rotary transmission mechanism 45, wherein the Y-axis rotating base 44 is rotatably mounted on the X-axis translation base 42, and the rotary transmission mechanism 45 is connected between the first driving mechanism 43 and the Y-axis rotating base 44, so as to drive the Y-axis rotating base 44 to rotate around the Y-axis under the drive of the first driving mechanism 43.

[0043] The U-shaped template mechanism 46 is disposed on the Y-axis rotating base 44 and has a first sewing plane 461, a second sewing plane 462 and a sewing arc surface 463. The first sewing plane 461 and the second sewing plane 462 are respectively connected to the two sides of the sewing arc surface 463 along the X-axis. The sewing arc surface 463 is centered on the rotation center of the Y-axis rotating base 44.

[0044] The U-shaped template device of the present invention, by setting the rotary transmission mechanism 45 between the first driving mechanism 43 and the Y-axis rotating base 44, converts the X-axis translational driving force output by the first driving mechanism 43 to the X-axis translational base 42 into a Y-axis rotational driving force, and provides it to the Y-axis rotating base 44. This allows the first driving mechanism 43 to drive the Y-axis rotating base 44 and the U-shaped template mechanism 46 located on the Y-axis rotating base 44 to translate along the X-axis by driving the X-axis translational base 42 to translate, and also to drive the U-shaped template mechanism 46 to rotate around the Y-axis by driving the Y-axis rotating base 44 to rotate. This achieves the purpose of driving the U-shaped template mechanism 46 to translate along the X-axis and rotate around the Y-axis with a single driving mechanism.

[0045] The U-shaped template mechanism 46 is used to clamp the fabric to be sewn. When the fabric to be sewn is clamped by the U-shaped template mechanism 46, a portion of the fabric is located within the first sewing plane 461, a portion within the sewing arc surface 463, and a portion within the second sewing plane 462. When the 3D computer pattern sewing machine sews the fabric to be sewn located within the first sewing plane 461 and the second sewing plane 462, the U-shaped template mechanism 46 needs to translate along the X-axis. When the 3D computer pattern sewing machine sews the fabric to be sewn located within the sewing arc surface 463, the U-shaped template mechanism 46 needs to rotate around the Y-axis.

[0046] like Figure 2As shown, the first driving mechanism 43 includes a first driving source 431, an X-axis threaded screw 432, a screw nut 433, a connecting block 434, a connecting slide 435, and a first X-axis guide rail 436. The X-axis threaded screw 432 is rotatably mounted on the first mounting base 41. The first driving source 431 drives the X-axis threaded screw 432 to rotate. The screw nut 433 is helically connected to the outside of the X-axis threaded screw 432. One end of the connecting block 434 is rotatably connected to the screw nut 433, and the other end is fixedly connected to the connecting slide 435. The connecting slide 435 is movably connected to the first mounting base 41 via the first X-axis guide rail 436, and the X-axis translation base 42 is mounted on the connecting slide 435.

[0047] It should be noted that the X-axis threaded screw 432 can only rotate around the X-axis on the first mounting base 41, and cannot translate along the X-axis. After the X-axis threaded screw 432 is connected to it using an internal or external thread of appropriate diameter for helical transmission, the screw nut 433 has translational freedom along the X-axis and rotational freedom around the Y-axis. When the translational freedom of the screw nut 433 along the X-axis is restricted, the X-axis threaded screw 432 can only drive the screw nut 433 to rotate around the Y-axis through helical transmission, and cannot drive the screw nut 433 to translate along the X-axis through helical transmission. When the rotational freedom of the screw nut 433 around the Y-axis is restricted, the X-axis threaded screw 432 can only drive the screw nut 433 to translate along the X-axis through helical transmission, and cannot drive the screw nut 433 to rotate around the Y-axis through helical transmission.

[0048] Because the connecting block 434 and the lead screw nut 433 are connected by a rotatable structure, and the rotational freedom of the connecting block 434 is restricted by the connecting slide 435, the connecting block 434 will not rotate with the lead screw nut 433 when the lead screw nut 433 rotates, but can translate with the lead screw nut 433 when the lead screw nut 433 translates. Therefore, the X-axis translation base 42 can only translate along the X-axis with the connecting block 434 and the connecting slide 435 under the drive of the first drive mechanism 43. The Y-axis rotation base 44 is disposed on the X-axis translation base 42, and can therefore translate with the X-axis translation base 42.

[0049] In this embodiment, the first driving source 431 is a drive motor, but other conventional driving sources can also be used.

[0050] The rotary transmission mechanism 45 includes a first gear 451, a second gear 452, a Y-axis rotation shaft 453, a third gear 454, and a fourth gear 455. The Y-axis rotation shaft 453 is rotatably mounted on the connecting slide 435. The first gear 451 is coaxially surrounding the X-axis threaded screw 432 and is fixedly connected to the screw nut 433. The second gear 452 is coaxially mounted on one end of the Y-axis rotation shaft 453 and meshes with the first gear 451. The third gear 454 is coaxially mounted on the other end of the Y-axis rotation shaft 453 and meshes with the fourth gear 455. The Y-axis rotation base 44 is coaxially mounted on the fourth gear 455.

[0051] Since the first gear 451 and the lead screw nut 433 are connected by a fixed structure, the rotation of the lead screw nut 433 can be transmitted to the Y-axis rotating base 44 in sequence through the first gear 451, the second gear 452, the Y-axis rotating shaft 453, the third gear 454 and the fourth gear 455. Therefore, the Y-axis rotating base 44 can rotate around the Y-axis under the drive of the first driving mechanism 43. The rotation transmission mechanism 45 is provided on the lead screw nut 433 and the connecting slide 435, so it can translate together with the lead screw nut 433 and the connecting slide 435, thereby maintaining the transmission connection with the Y-axis rotating base 44.

[0052] Preferably, the first gear 451 and the second gear 452 are mating bevel gears, the third gear 454 is a cylindrical external gear, and the fourth gear 455 is a ring internal gear that meshes with the third gear 454.

[0053] like Figure 3 As shown, the first gear 451 and the connecting block 434 are connected to the lead screw nut 433 via a shaft coupling 437. The shaft coupling 437 includes a shaft coupling sleeve 437a and a fixing ring 437b. The shaft coupling sleeve 437a is coaxially wrapped around the X-axis threaded lead screw 432, with one end having a peripheral limiting part 437c and the other end fixedly connected to the fixing ring 437b. The lead screw nut 433 is fixedly connected to the side of the fixing ring 437b facing away from the shaft coupling sleeve 437a, and the first gear 451 is fixedly connected to the side of the shaft coupling sleeve 437a facing away from the fixing ring 437b. The end of the connecting block 434 connected to the lead screw nut 433 is wrapped around the shaft coupling sleeve 437a, and is rotatably connected to the peripheral limiting part 437c and the fixing ring 437b on both sides along the X-axis via a first bearing 438 and a second bearing 439, respectively.

[0054] When the lead screw nut 433 rotates, it can drive the first gear 451 to rotate together through the shaft coupling 437, and achieve rotational isolation from the connecting block 434 through the first bearing 438 and the second bearing 439; when the lead screw nut 433 translates, it can drive the first gear 451 to translate together through the shaft coupling 437, and drive the connecting block 434 to translate together through the first bearing 438 and the second bearing 439.

[0055] like Figure 4 As shown, the Y-axis rotating base 44 includes a rotating base 441, a third bearing 442, and an outer panel 443. The rotating base 441 is rotatably connected to the X-axis translation base 42 through the third bearing 442. The outer panel 443 is fixedly disposed on the side of the rotating base 441 facing away from the first mounting base 41. The fourth gear 455 is fixedly disposed on the side of the rotating base 441 facing the first mounting base 41. The U-shaped template mechanism 46 is fixedly disposed on the outer panel 443.

[0056] Since the rotating seat 441 is rotatably connected to the X-axis translation base 42 via the third bearing 442, it can rotate around the Y-axis relative to the X-axis translation base 42 while translating along the X-axis with the X-axis translation base 42. Since the rotating seat 441 is fixedly mounted on the fourth gear 455, it can rotate around the Y-axis (relative to the X-axis translation base 42) with the fourth gear 455, thereby driving the U-shaped template mechanism 46 located on the outer panel 443 to translate and rotate.

[0057] Preferably, in order to improve the translational stability of the X-axis translation base 42, the X-axis translation base 42 is also movably connected to the first mounting base 41 via a second X-axis guide rail 4310.

[0058] The first mounting base 41 and the X-axis translation base 42 are respectively provided with a first clearance hole 415 and a second clearance hole 421 at the rotation center corresponding to the Y-axis rotation base 44. The Y-axis rotation base 44 is also provided with a third clearance hole 444 at its rotation center. The first clearance hole 415, the second clearance hole 421 and the third clearance hole 444 are used to avoid the rotary shuttle device of the three-dimensional computer pattern machine. The U-shaped template mechanism 46 surrounds the third clearance hole 444.

[0059] During assembly, the rotary hook device of the three-dimensional computer pattern machine extends out after passing through the first clearance hole 415 of the first mounting base 41, the second clearance hole 421 of the X-axis translation base 42, and the third clearance hole 444 of the Y-axis rotation base 44, so that the U-shaped template mechanism 46 can surround the rotary hook device.

[0060] Example 2

[0061] As an optimization of Embodiment 1, in this embodiment, when the 3D computer pattern sewing machine sews the fabric to be sewn located in the first sewing plane 461 and the second sewing plane 462, the U-shaped template mechanism 46 does not need to rotate around the Y-axis, and when the 3D computer pattern sewing machine sews the fabric to be sewn located in the sewing arc surface 463, the U-shaped template mechanism 46 does not need to translate along the X-axis.

[0062] Therefore, as Figure 5 As shown, the first mounting base 41 has a limiting groove 411 on the side facing the Y-axis rotating base 44. The limiting groove includes a first linear groove 41a, a second linear groove 41b, and an arc groove 41c. The arc groove 41c connects the first linear groove 41a and the second linear groove 41b, and the arc groove 41c is centered on the rotation center of the Y-axis rotating base 44. The first linear groove 41a and the second linear groove 41b are parallel to the X-axis and are symmetrical about the rotation center of the Y-axis rotating base 44. Figure 4 As shown, a first limiting member 445 is provided on the circumference of the Y-axis rotating base 44 facing the first mounting base 41. The first limiting member 445 extends into the limiting groove 411 and can move along the limiting groove 411.

[0063] In this embodiment, the first limiting member 445 may be a limiting shaft, and preferably it is provided with a self-rotating roller to reduce the friction force it experiences when moving in the limiting groove 411.

[0064] like Figure 6 The Y-axis rotating base 44 is provided with a limiting slot 446 with a U-shaped inner wall surface 447 on the side facing the first mounting base 41. The U-shaped inner wall surface 447 includes a first linear inner wall surface 44a, a second linear inner wall surface 44b, and an arc-shaped inner wall surface 44c. The first linear inner wall surface 44a and the second linear inner wall surface 44b are respectively connected to the two sides of the arc-shaped inner wall surface 44c. The arc-shaped inner wall surface 44c is centered on the rotation center of the Y-axis rotating base 44. The first mounting base 41 is provided with a second limiting member 414 on the side facing the Y-axis rotating base 44. The second limiting member 414 extends into the limiting slot 446 and can move along the U-shaped inner wall surface 447 of the limiting slot 446.

[0065] The limiting slot 446 needs to provide a U-shaped inner wall surface 447 to restrict the relative movement of the second limiting member 414. That is to say, no matter what shape the entire inner wall surface of the limiting slot 446 is, as long as a part of it can provide a U-shaped inner wall surface 447, it can play a limiting role for the second limiting member 414.

[0066] When the first driving mechanism 43 drives the U-shaped template mechanism 46 to rotate so that the first sewing plane 461 or the second sewing plane 462 is oriented along the Z-axis toward the sewing head of the three-dimensional pattern machine, the first limiting member 445 moves into the first linear groove 41a or the second linear groove 41b and is subject to the rotational limiting effect of the first linear groove 41a or the second linear groove 41b. This rotational limiting effect is transmitted sequentially to the lead screw nut 433 through the Y-axis rotating base 44, the fourth gear 455, the third gear 454, the Y-axis rotating shaft 453, the second gear 452, and the first gear 451. This restricts the rotational freedom of the lead screw nut 433. Simultaneously, the limiting slot 446 rotates until its central axis is parallel to the X-axis. The second limiting member 414 abuts against the first linear inner wall surface 44a or the second linear inner wall surface 44b of the limiting slot 446, thus escaping the translational limiting effect of the arc-shaped inner wall surface 44c. This allows the lead screw nut 433 to regain its translational freedom, enabling it to translate along the X-axis under the action of the X-axis threaded lead screw 432, and sequentially drive the Y-axis rotating base 44 to translate along the X-axis via the connecting block 434, the connecting slide 435, and the X-axis translational base 42.

[0067] Therefore, when the first drive mechanism 43 drives the U-shaped template mechanism 46 to rotate so that the first sewing plane 461 or the second sewing plane 462 is oriented toward the sewing machine head along the Z-axis, the Y-axis rotating base 44 cannot rotate around the Y-axis, but can translate along the X-axis.

[0068] When the first driving mechanism 43 drives the U-shaped template mechanism 46 to rotate so that the sewing arc surface 463 faces the sewing head of the three-dimensional pattern machine along the Z-axis, the limiting slot 446 rotates until its central axis intersects the X-axis. The second limiting member 414 abuts against the arc-shaped inner wall surface 44c of the limiting slot 446 and is subjected to the translational limiting effect of the arc-shaped inner wall surface 44c. This translational limiting effect is transmitted to the lead screw nut 43 in sequence through the Y-axis rotating base 44, the X-axis translational base 42, the connecting slide 435, and the connecting block 434. 3. This restricts the translational freedom of the lead screw nut 433. At the same time, the first limiting member 445 moves into the arc groove 41c, escaping the rotational limiting effect of the first linear groove 41a or the second linear groove 41b, so that the lead screw nut 433 regains its rotational freedom and can rotate around the Y-axis under the action of the X-direction threaded lead screw 432, and drive the Y-axis rotating base 44 to rotate around the Y-axis in sequence through the first gear 451, the second gear 452, the Y-direction rotating shaft 453, the third gear 454 and the fourth gear 455.

[0069] Therefore, when the first driving mechanism 43 drives the U-shaped template mechanism 46 to rotate until the sewing arc surface 463 faces upward along the Z-axis, the X-axis translation base 42 cannot translate along the X-axis, but can rotate around the Y-axis.

[0070] When the center position of the second limiting member 414 deviates from the rotation center of the Y-axis rotating base 44, the movement trajectory of the second limiting member 414 relative to the Y-axis rotating base 44 is a U-shaped trajectory. At this time, the limiting slot 446 can be a U-shaped slot, and the second limiting member 414 can be a limiting shaft. Preferably, the second limiting member 414 using the limiting shaft is provided with a self-rotating roller to reduce the friction force it experiences when moving within the U-shaped slot. When the center position of the second limiting member 414 is opposite to the rotation center of the Y-axis rotating base 44, the movement trajectory of the second limiting member 414 relative to the Y-axis rotating base 44 is a U-shaped trajectory. When the rotation centers of the Y-axis rotating base 44 coincide, the movement trajectory of the second limiting member 414 relative to the Y-axis rotating base 44 is a straight line. At this time, the limiting slot 446 can be an elongated slot (also called an elongated oval slot) with at least one end being semi-circular. The second limiting member 414 can be a limiting ring to avoid the rotary shuttle device of the three-dimensional computer pattern machine. Preferably, the second limiting member 414 with the limiting ring is provided with a fourth bearing to reduce the friction force it experiences when moving in the elongated slot.

[0071] It should be noted that the U-shaped inner wall surface 447 provided by the limiting slot 446 and the U-shaped template mechanism 46 are not only the same in shape, but also in the same direction. That is, when the U-shaped template mechanism 46 rotates to face the sewing machine head along the Z-axis with the sewing arc surface 463, the arc-shaped inner wall surface 44c of the limiting slot 446 also faces the sewing machine head along the Z-axis. When the U-shaped template mechanism 46 rotates to face the sewing machine head along the Z-axis with the first sewing plane 461 or the second sewing plane 462, the first linear groove 41a or the second linear groove 41b of the limiting slot 446 also faces the sewing machine head along the Z-axis.

[0072] Example 3

[0073] As an optimization of Embodiment 1 or Embodiment 2, in this embodiment, when the 3D computer pattern sewing machine sews the fabric to be sewn located in the U-shaped template mechanism 46, the U-shaped template mechanism 46 also needs to be translated along the Y-axis.

[0074] Therefore, as Figure 7 As shown, the U-shaped template device further includes:

[0075] Second mounting base 47;

[0076] Y-axis translation base 48 and second drive mechanism 49, wherein the Y-axis translation base 48 is movably disposed on the second mounting base 47, and the second drive mechanism 49 is connected to drive the Y-axis translation base 48 to translate along the Y-axis;

[0077] The first mounting base 41 is disposed on the Y-axis translation base 48.

[0078] like Figure 8 As shown, the second drive mechanism 49 includes a second drive source 491, a first X-axis drive shaft 492, a second X-axis drive shaft 493, a first drive wheel 494, a second drive wheel 495, a drive belt 496, and a Y-axis guide rail 497. The first X-axis drive shaft 492 and the second X-axis drive shaft 493 are rotatably mounted on the second mounting base 47 and are arranged opposite each other along the Y-axis. The first drive wheel 494 is coaxially sleeved on the outside of the first X-axis drive shaft 492, and the second drive wheel 495 is coaxially sleeved on the outside of the second X-axis drive shaft 493. The drive belt 496 is sleeved between the drive belt 496 and the second drive wheel 495 along the Y-axis. The Y-axis translation base 48 is fixedly mounted on the drive belt 496 and is movably connected to the second mounting base 47 through the Y-axis guide rail 497.

[0079] In this embodiment, the second driving source 491 is a drive motor, but other conventional driving sources can also be used.

[0080] Example 4

[0081] like Figure 9 As shown, a three-dimensional pattern making machine includes a sewing machine table 1, a sewing machine head 2, a rotary hook device 3, and a U-shaped template device 4 as described in any of Embodiments 1 to 3. The sewing machine head 2, the rotary hook device 3, and the U-shaped template device 4 are all disposed on the sewing machine table 1, and the rotary hook device 3 and the U-shaped template device 4 are located below the sewing machine head 2 along the Z-axis, while the U-shaped template device 4 surrounds the rotary hook device 3.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and not to limit them. Although the embodiments of the present invention have been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the embodiments of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A U-shaped template device for use in a three-dimensional pattern machine, characterized in that, include: First mounting base; An X-axis translation base and a first driving mechanism are provided. The X-axis translation base is movably mounted on the first mounting base, and the first driving mechanism is connected to drive the X-axis translation base to translate along the X-axis. A Y-axis rotating base and a rotary transmission mechanism are provided. The Y-axis rotating base is rotatably mounted on the X-axis translation base. The rotary transmission mechanism is connected between the first driving mechanism and the Y-axis rotating base so that the Y-axis rotating base can be driven by the first driving mechanism to rotate around the Y-axis. The U-shaped template mechanism is set on the Y-axis rotating base and has a first sewing plane, a second sewing plane and a sewing arc surface. The first sewing plane and the second sewing plane are respectively connected to the two sides of the sewing arc surface along the X-axis. The sewing arc surface is centered on the rotation center of the Y-axis rotating base. The first mounting base has a limiting groove on the side facing the Y-axis rotating base. The limiting groove includes a first linear groove, a second linear groove, and an arc-shaped groove. The arc-shaped groove connects the first linear groove and the second linear groove, and the arc-shaped groove is centered on the rotation center of the Y-axis rotating base. The first linear groove and the second linear groove are parallel to the X-axis and are symmetrical about the rotation center of the Y-axis rotating base. A first limiting member is provided on the circumference of the Y-axis rotating base facing the first mounting base. The first limiting member extends into the limiting groove and can move along the limiting groove. The Y-axis rotating base has a limiting slot with a U-shaped inner wall on the side facing the first mounting base. The U-shaped inner wall includes a first linear inner wall, a second linear inner wall, and an arc-shaped inner wall. The first linear inner wall and the second linear inner wall are respectively connected to the two sides of the arc-shaped inner wall. The arc-shaped inner wall is centered on the rotation center of the Y-axis rotating base. The first mounting base has a second limiting member on the side facing the Y-axis rotating base. The second limiting member extends into the limiting slot and can move along the U-shaped inner wall of the limiting slot. When the first driving mechanism drives the U-shaped template mechanism to rotate so that the first sewing plane or the second sewing plane faces the sewing head of the three-dimensional pattern machine along the Z-axis, the first limiting member moves into the first linear groove or the second linear groove. At the same time, the limiting groove hole rotates so that its central axis is parallel to the X-axis, and the second limiting member abuts against the first linear inner wall surface or the second linear inner wall surface of the limiting groove hole. When the first driving mechanism drives the U-shaped template mechanism to rotate so that the sewing arc surface faces the sewing head of the three-dimensional pattern machine along the Z-axis, the limiting groove hole rotates so that its central axis intersects the X-axis, and the second limiting member abuts against the arc-shaped inner wall surface of the limiting groove hole. At the same time, the first limiting member moves into the arc-shaped groove.

2. The U-shaped template device according to claim 1, characterized in that, The first driving mechanism includes a first driving source, an X-axis threaded screw, a screw nut, a connecting block, a connecting slide, and a first X-axis guide rail. The X-axis threaded screw is rotatably mounted on the first mounting base. The first driving source drives the X-axis threaded screw to rotate. The screw nut is helically connected to the X-axis threaded screw. One end of the connecting block is rotatably connected to the screw nut, and the other end is fixedly connected to the connecting slide. The connecting slide is movably connected to the first mounting base via the first X-axis guide rail, and the X-axis translation base is mounted on the connecting slide.

3. The U-shaped template device according to claim 2, characterized in that, The rotary transmission mechanism includes a first gear, a second gear, a Y-axis rotating shaft, a third gear, and a fourth gear. The Y-axis rotating shaft is rotatably mounted on the connecting slide. The first gear is coaxially surrounding the X-axis threaded screw and is fixedly connected to the screw nut. The second gear is coaxially mounted on one end of the Y-axis rotating shaft and meshes with the first gear. The third gear is coaxially mounted on the other end of the Y-axis rotating shaft and meshes with the fourth gear. The Y-axis rotating base is coaxially mounted on the fourth gear.

4. The U-shaped template device according to claim 3, characterized in that, The first gear and the second gear are mating bevel gears, the third gear is a cylindrical external gear, and the fourth gear is a ring internal gear that meshes with the third gear.

5. The U-shaped template device according to claim 3, characterized in that, The first gear and the connecting block are connected to the lead screw nut via a shaft coupling; the shaft coupling includes a shaft coupling sleeve and a fixing ring. The shaft coupling sleeve is coaxially wrapped around the X-axis threaded lead screw, with one end having a peripheral limiting part and the other end fixedly connected to the fixing ring; the lead screw nut is fixedly connected to the side of the fixing ring facing away from the shaft coupling sleeve, and the first gear is fixedly connected to the side of the shaft coupling sleeve facing away from the fixing ring; the end of the connecting block connected to the lead screw nut is wrapped around the shaft coupling sleeve, and is rotatably connected to the peripheral limiting part and the fixing ring on both sides along the X-axis via a first bearing and a second bearing, respectively.

6. The U-shaped template device according to claim 3, characterized in that, The Y-axis rotating base includes a rotating body, a third bearing, and an outer panel. The rotating body is rotatably connected to the X-axis translational base through the third bearing. The outer panel is fixedly disposed on the side of the rotating body facing away from the first mounting base. The fourth gear is fixedly disposed on the side of the rotating body facing the first mounting base. The U-shaped template mechanism is fixedly disposed on the outer panel.

7. The U-shaped template device according to claim 1, characterized in that, The U-shaped template device further includes: Second mounting base; Y-axis translation base and second drive mechanism, wherein the Y-axis translation base is movably disposed on the second mounting base, and the second drive mechanism is connected to drive the Y-axis translation base to translate along the Y-axis; The first mounting base is disposed on the Y-axis translation base.

8. A three-dimensional pattern making machine, characterized in that, The device includes a sewing machine table, a sewing machine head, a rotary hook device, and a U-shaped template device as described in any one of claims 1-7. The sewing machine head, the rotary hook device, and the U-shaped template device are all disposed on the sewing machine table, and the rotary hook device and the U-shaped template device are located below the sewing machine head along the Z-axis, while the U-shaped template device surrounds the rotary hook device.

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