A shuttle changing mechanism for a longitudinal seaming machine

Abstract

The utility model discloses a longitudinal seam machine shuttle changing mechanism, include: send shuttle unit, it includes rotatable setting carousel, and the carousel is arranged with a plurality of positioning rod for installing the shuttle core along its circumferential interval, snatch unit, it includes movable setting support, the jaw piece of rotation setting in the support frame and the jaw piece driving part of driving jaw piece rotation, is provided with the containing space on the support frame, and the jaw piece is located one side of containing space and can rotate to containing space, and the jaw piece sets up to the carousel, and the jaw piece can take down the shuttle core on longitudinal seam machine and install to the positioning rod, and take out the shuttle core on the positioning rod and install to longitudinal seam machine. The utility model discloses that the structure design is reasonable, can realize the automatic change shuttle core of longitudinal seam machine, and such great reduction artificial cost and improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sewing equipment, and more specifically, to a shuttle changing mechanism for a longitudinal sewing machine. Background Technology

[0002] A longitudinal sewing machine is an industrial sewing machine specifically designed for longitudinal sewing, where "longitudinal" refers to sewing along the length of the fabric. It is a specialized, high-efficiency flatbed sewing machine optimized for long-distance straight sewing, enabling continuous, high-speed, and high-quality longitudinal sewing. The core function of a longitudinal sewing machine is to efficiently and precisely join fabrics, making it one of the most basic and widely used pieces of equipment in the clothing, bag, and home textile industries.

[0003] During the production process of a longitudinal sewing machine, the bobbin needs to be replaced when the bobbin thread is almost used up. In existing technology, this is usually done manually. The specific steps include removing the old bobbin, winding the new bobbin, and aligning it before reinstalling it into the machine. However, when the bobbin size is small, the amount of bobbin thread wound on it is not large, requiring frequent bobbin changes, which increases labor costs and reduces production efficiency. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art. Its structure is reasonably designed and can realize the automatic replacement of bobbins for longitudinal sewing machines, thus greatly reducing labor costs and improving production efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A shuttle changing mechanism for a longitudinal sewing machine, comprising: The shuttle feeding unit includes a rotatable turntable with a plurality of positioning rods for mounting the shuttle core arranged at intervals along its circumference. The gripping unit includes a movable support frame, a gripper rotatably mounted on the support frame, and a gripper drive for rotating the gripper. The support frame has a receiving space, the gripper is located on one side of the receiving space and can rotate into the receiving space, the gripper is positioned facing the turntable, and the gripper can remove the bobbin from the sewing machine and install it onto the positioning rod, and remove the bobbin from the positioning rod and install it onto the sewing machine.

[0006] By adopting the above technical solution, in specific use, when the bobbin thread on the sew sewing machine is almost used up, the machine needs to be stopped for bobbin replacement. First, the support frame is moved so that the position of the gripper corresponds to the position of the bobbin on the sew sewing machine. Then, the gripper drive is used to drive the gripper to rotate. During the rotation of the gripper, the bobbin is gripped by the gripper, and the components or the entire bobbin are placed in the receiving space. Then, the support frame is moved so that the gripper holding the bobbin moves to a position opposite to the positioning rod, and the bobbin is installed on the empty positioning rod. Then, the turntable is rotated so that the positioning rod with the bobbin wrapped with bobbin thread is opposite to the gripper. Then, the gripper is operated to grip the bobbin and move it back to the position where the bobbin is installed on the sew sewing machine. Finally, the replaced bobbin is installed on the sew sewing machine, thus realizing the automated replacement of the lock cylinder, greatly reducing labor costs and improving production efficiency. The turntable has multiple positioning rods pre-installed with bobbins wrapped with bobbin thread, and only one empty space is left for installing bobbins replaced from the sew-sewing machine.

[0007] Preferably, the support frame is provided with a rotating hole, the gripper is connected to a connecting shaft passing through the rotating hole, the bottom of the connecting shaft is fixedly connected to a linkage block, and the gripper drive is connected to or abuts against the linkage block and drives the linkage block to move.

[0008] By adopting the above technical solution, which uses a rotating hole and a connecting shaft, the rotational stability of the gripper can be well guaranteed. Furthermore, a linkage block is fixedly connected to the bottom of the connecting shaft. The gripper drive component specifically drives the linkage block to rotate the gripper. Thus, transmission of the gripper can be achieved through a simple structure.

[0009] Preferably, the linkage block includes an integrally formed clamping part and an abutment part. The clamping part is provided with a mounting hole for the connecting shaft to pass through. Two clamping sections are provided on one side of the mounting hole on the clamping part. The connecting shaft is fixed in the mounting hole by fasteners passing through the two clamping sections. The abutment part is provided with a flat abutment surface. The gripper drive is a cylinder, and the output shaft of the cylinder abuts against the abutment surface.

[0010] By adopting the above technical solution and further defining the structure of the linkage block, after the connecting shaft passes through the mounting hole, the connecting shaft is well fixed to the mounting hole by fasteners, specifically pins or screws, passing through the two clamping sections. The gripper drive is specifically a cylinder, and the output shaft of the cylinder abuts against the abutment surface, thereby driving the linkage block.

[0011] Preferably, it further includes a bushing sleeve fitted on the outside of the connecting shaft. The bushing sleeve includes a support portion that abuts against the linkage block and a fitting portion located between the connecting shaft and the rotating hole. A stepped surface that abuts against the support frame is formed between the fitting portion and the support portion.

[0012] By adopting the above technical solution, the bushing can effectively reduce the rotational friction between the connecting shaft and the rotating hole. Furthermore, the stepped surface can effectively separate the sleeve part and the support part, increase the contact area between the support part and the linkage block, and ensure the installation accuracy of the bushing because the stepped surface will abut against the support frame.

[0013] Preferably, the support frame is located in the accommodating space and forms a accommodating frame. The inner wall of the accommodating frame is provided with a limit block. The accommodating frame has two horizontal arms and a vertical arm connecting the two horizontal arms. Part or all of the sides of the two horizontal arms and the vertical arm are configured as arc surfaces.

[0014] By adopting the above technical solution, the accommodating frame is set such that the three sides of the accommodating space are formed by two horizontal arms and one vertical arm, and the arc-shaped surface can better fit the shape of the bobbin, making it easier for part or all of the bobbin to be located in the accommodating space. The setting of the limiting block means that when the gripper clamps the lock cylinder, the bobbin will abut against the limiting block, thereby achieving better clamping and fixing of the lock cylinder.

[0015] Preferably, the support frame is movable in both horizontal and vertical directions, and further includes a horizontal drive member for driving the support frame to move in the horizontal direction and a vertical drive member for driving the support frame to move in the vertical direction.

[0016] By adopting the above technical solution, the support frame is specifically positioned below the longitudinal sewing machine, and the shuttle feeding unit is also located below the longitudinal sewing machine and positioned opposite the support frame. When the bobbin needs to be replaced, the vertical drive component moves the support frame upward, and the horizontal drive component moves the support frame closer to or away from the longitudinal sewing machine to clamp the lock core. Then, the support frame moves downward and clamps the bobbin from the turntable, and finally installs it onto the longitudinal sewing machine. Both the horizontal drive component and the pivot drive component are cylinders.

[0017] Preferably, the shuttle feeding unit further includes a shuttle feeding guide rail and a shuttle feeding drive component that drives the turntable to slide on the shuttle feeding guide rail.

[0018] By adopting the above technical solution and setting up a shuttle feed guide rail and a shuttle feed drive, the entire turntable can be moved horizontally. After all the bobbins on the positioning rod have been replaced, the turntable can be moved out from the bottom of the longitudinal sewing machine, and the bobbins on the positioning rod can be replaced. The shuttle feed drive block can be a drive slider or a drive cylinder, capable of driving the turntable to slide on the shuttle feed guide rail.

[0019] Preferably, the turntable is connected to a rotary motor that drives the turntable to rotate so that the positioning rod changes position.

[0020] By adopting the above technical solution, the rotary motor can precisely control the rotation angle of the turntable, thereby achieving the accuracy of the relative position of the positioning rod and the gripper. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model; Figure 2 This is a schematic diagram illustrating the structure of the grasping unit in a specific embodiment of this utility model; Figure 3 This is a schematic diagram illustrating the structure of the shuttle feeding unit in a specific embodiment of this utility model; Figure 4 This is a schematic diagram illustrating part of the structure of the grasping unit in a specific embodiment of this utility model; Figure 5 This is a schematic diagram illustrating the structure of the support frame according to a specific embodiment of the present invention; Figure 6 This is a schematic diagram illustrating the position and structure of the bushing according to a specific embodiment of the present utility model; Figure 7 This is a schematic diagram illustrating the connection structure of the linkage block in a specific embodiment of this utility model.

[0022] In the diagram: 100. Longitudinal sewing machine; 1. Shuttle feeding unit; 11. Turntable; 12. Positioning rod; 13. Shuttle feeding guide rail; 14. Shuttle feeding drive component; 15. Rotary motor; 2. Gripping unit; 3. Support frame; 31. Accommodation space; 32. Rotation hole; 33. Horizontal drive component; 34. Vertical drive component; 4. Gripper component; 41. Connecting shaft; 5. Gripper drive component; 6. Linkage block; 61. Clamping part; 62. Abutting part; 63. Mounting hole; 64. Clamping section; 65. Abutting surface; 7. Bushing; 71. Support part; 72. Sleeve fitting part; 73. Stepped surface; 8. Receiving frame; 81. Limiting block; 82. Horizontal arm; 83. Vertical arm; 84. Arc-shaped surface. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-7As shown, a shuttle changing mechanism for a longitudinal sewing machine includes: a shuttle feeding unit 1, which includes a rotatable turntable 11, on which a plurality of positioning rods 12 for installing bobbins are arranged at intervals along its circumference; and a gripping unit 2, which includes a movable support frame 3, a gripper 4 rotatably mounted on the support frame 3, and a gripper drive 5 for driving the gripper 4 to rotate. The support frame 3 is provided with a receiving space 31, the gripper 4 is located on one side of the receiving space 31 and can rotate into the receiving space 31, the gripper 4 is positioned facing the turntable 11, and the gripper 4 can remove the bobbins from the longitudinal sewing machine 100 and install them onto the positioning rods 12, and remove the bobbins from the positioning rods 12 and install them onto the longitudinal sewing machine 100.

[0025] By adopting the above technical solution, in specific use, when the bobbin thread on the sewing machine 100 is almost used up, the machine needs to be stopped for bobbin replacement. First, the support frame 3 is moved so that the position of the gripper 4 corresponds to the position of the bobbin on the sewing machine 100. Then, the gripper drive 5 drives the gripper 4 to rotate. During the rotation of the gripper 4, the bobbin is gripped by the gripper 4, and the components or the entire bobbin are located in the receiving space 31. Then, the support frame 3 is moved so that the gripper 4 holding the bobbin moves to a position opposite to the positioning rod 12. The bobbin is installed on the empty positioning rod 12. Then, the turntable 11 is rotated so that the positioning rod 12 with the bobbin thread wrapped around it is opposite to the gripper 4. Then, the gripper 4 is operated to grip the bobbin and move it back to the position where the bobbin is installed on the sewing machine 100. Finally, the replaced bobbin is installed on the sewing machine 100, thus realizing the automated replacement of the lock cylinder, greatly reducing labor costs and improving production efficiency. Among them, multiple positioning rods 12 on the turntable 11 will have bobbins with bobbins wrapped with bottom thread pre-installed, and only one empty space will be left for installing bobbins replaced from the longitudinal sewing machine 100.

[0026] The support frame 3 has a rotating hole 32. The gripper 4 is connected to a connecting shaft 41 that passes through the rotating hole 32. A linkage block 6 is fixedly connected to the bottom of the connecting shaft 41. The gripper drive 5 connects to or abuts against the linkage block 6 and drives the linkage block 6 to move. The rotating hole 32 and connecting shaft 41 design can effectively ensure the rotational stability of the gripper 4. The linkage block 6, fixedly connected to the bottom of the connecting shaft 41, drives the linkage block 6 to move, thereby realizing the rotation of the gripper 4. In this way, the transmission of the gripper 4 can be achieved with a simple structure.

[0027] The linkage block 6 includes an integrally formed clamping part 61 and an abutment part 62. The clamping part 61 has a mounting hole 63 for the connecting shaft 41 to pass through. Two clamping sections 64 are provided on one side of the clamping part 61 near the mounting hole 63. Fasteners pass through the two clamping sections 64 to fix the connecting shaft 41 in the mounting hole 63. The abutment part 62 has a flat abutment surface 65. The gripper drive 5 is a cylinder, and the output shaft of the cylinder abuts against the abutment surface 65. By further defining the structure of the linkage block 6, after the connecting shaft 41 passes through the mounting hole 63, fasteners, specifically pins or screws, pass through the two clamping sections 64 to securely fix the connecting shaft 41 in the mounting hole 63. The gripper drive 5 is specifically a cylinder, and the output shaft of the cylinder abuts against the abutment surface 65, thereby driving the linkage block 6.

[0028] It also includes a bushing 7 fitted onto the outside of the connecting shaft 41. The bushing 7 includes a support portion 71 that abuts against the linkage block 6 and a fitting portion 72 located between the connecting shaft 41 and the rotating hole 32. A stepped surface 73 is formed between the fitting portion 72 and the support portion 71, which abuts against the support frame 3. The bushing 7 effectively reduces the rotational friction between the connecting shaft 41 and the rotating hole 32. Furthermore, the stepped surface 73 effectively separates the fitting portion 72 and the support portion 71, increases the contact area 65 between the support portion 71 and the linkage block 6, and ensures the accurate installation of the bushing 7 because the stepped surface 73 abuts against the support frame 3.

[0029] The support frame 3 is located at the position of the receiving space 31 and forms a receiving frame 8. The inner wall of the receiving frame 8 is provided with a limiting block 81. The receiving frame 8 has two horizontal arms 82 and a vertical arm 83 connecting the two horizontal arms 82. Part or all of the sides of the two horizontal arms 82 and the vertical arm 83 are configured as arc-shaped surfaces 84. With the arrangement of the receiving frame 8, the three sides of the receiving space 31 are respectively formed by the two horizontal arms 82 and the one vertical arm 83. The arc-shaped surface 84 can better fit the shape of the bobbin, making it easier for part or all of the bobbin to be located in the receiving space 31. The limiting block 81 is provided so that when the gripper 4 clamps the lock cylinder, the bobbin will abut against the limiting block 81, thereby achieving better clamping and fixing of the lock cylinder.

[0030] Furthermore, the support frame 3 can move in both horizontal and vertical directions. It also includes a horizontal drive component 33 for horizontal movement and a vertical drive component 34 for vertical movement. Specifically, the support frame 3 is positioned below the longitudinal sewing machine 100. The shuttle feeding unit 1 is also located below the longitudinal sewing machine 100 and is positioned opposite the support frame 3. When the bobbin needs to be replaced, the vertical drive component 34 moves the support frame 3 upwards, and the horizontal drive component 33 moves the support frame 3 closer to or further away from the longitudinal sewing machine 100 to clamp the lock core. Then, the support frame 3 moves downwards and clamps the bobbin from the turntable 11, finally installing it onto the longitudinal sewing machine 100. Both the horizontal drive component 33 and the pivot drive component are cylinders.

[0031] The shuttle feeding unit 1 also includes a shuttle feeding guide rail 13 and a shuttle feeding drive component 14 that drives the turntable 11 to slide on the shuttle feeding guide rail 13. By setting the shuttle feeding guide rail 13 and the shuttle feeding drive component 14, the turntable 11 can be moved horizontally as a whole. After all the bobbins on the positioning rod 12 have been replaced, the turntable 11 can be moved out from the bottom of the longitudinal sewing machine 100, and the bobbins on the positioning rod 12 can be replaced. The shuttle feeding drive block can be a drive slider or a drive cylinder, which can drive the turntable 11 to slide on the shuttle feeding guide rail 13.

[0032] In addition, the turntable 11 is connected to a rotary motor 15 that drives the turntable 11 to rotate, thereby changing the position of the positioning rod 12. Specifically, the rotary motor 15 can precisely control the rotation angle of the turntable 11, thereby achieving the accuracy of the relative position of the positioning rod 12 and the gripper 4.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A shuttle changing mechanism for a longitudinal sewing machine, characterized in that, include: The shuttle feeding unit (1) includes a rotatable turntable (11) on which a plurality of positioning rods (12) for mounting the shuttle core are arranged at intervals along its circumference; The gripping unit (2) includes a movable support frame (3), a gripper (4) rotatably mounted on the support frame (3), and a gripper drive (5) for driving the gripper (4) to rotate. The support frame (3) is provided with a receiving space (31). The gripper (4) is located on one side of the receiving space (31) and can rotate into the receiving space (31). The gripper (4) is positioned facing the turntable (11). The gripper (4) can remove the bobbin from the sewing machine (100) and install it onto the positioning rod (12), and remove the bobbin from the positioning rod (12) and install it onto the sewing machine (100).

2. The shuttle changing mechanism for a longitudinal sewing machine according to claim 1, characterized in that, The support frame (3) is provided with a rotating hole (32), the gripper (4) is connected to a connecting shaft (41) that passes through the rotating hole (32), and a linkage block (6) is fixedly connected to the bottom of the connecting shaft (41). The gripper drive (5) is connected to or abuts against the linkage block (6) and drives the linkage block (6) to move.

3. The shuttle changing mechanism for a longitudinal sewing machine according to claim 2, characterized in that, The linkage block (6) includes an integrally formed clamping part (61) and abutting part (62). The clamping part (61) is provided with a mounting hole (63) for the connecting shaft (41) to pass through. Two clamping sections (64) are provided on one side of the mounting hole (63) of the clamping part (61). The connecting shaft (41) is fixed in the mounting hole (63) by fasteners passing through the two clamping sections (64). The abutting part (62) is provided with a flat abutting surface (65). The gripper drive (5) is a cylinder, and the output shaft of the cylinder abuts against the abutting surface (65).

4. A shuttle changing mechanism for a longitudinal sewing machine according to claim 2 or 3, characterized in that, It also includes a bushing (7) sleeved on the outside of the connecting shaft (41). The bushing (7) includes a support part (71) abutting against the linkage block (6) and a sleeve part (72) located between the connecting shaft (41) and the rotating hole (32). A stepped surface (73) abutting against the support frame (3) is formed between the sleeve part (72) and the support part (71).

5. A shuttle changing mechanism for a longitudinal sewing machine according to claim 1 or 2, characterized in that, The support frame (3) is located in the receiving space (31) and a receiving frame (8) is formed. A limit block (81) is provided on the inner wall of the receiving frame (8). The receiving frame (8) has two horizontal arms (82) and a vertical arm (83) connecting the two horizontal arms (82). Part or all of the sides of the two horizontal arms (82) and the vertical arm (83) are configured as arc surfaces (84).

6. A shuttle changing mechanism for a longitudinal sewing machine according to claim 1 or 2, characterized in that, The support frame (3) is movable in both the horizontal and vertical directions, and also includes a horizontal drive (33) for driving the support frame (3) to move in the horizontal direction and a vertical drive (34) for driving the support frame (3) to move in the vertical direction.

7. The shuttle changing mechanism for a longitudinal sewing machine according to claim 1, characterized in that, The shuttle unit (1) also includes a shuttle guide rail (13) and a shuttle drive component (14) that drives the turntable (11) to slide on the shuttle guide rail (13).

8. A shuttle changing mechanism for a longitudinal sewing machine according to claim 7, characterized in that, The turntable (11) is connected to a rotary motor (15) that drives the turntable (11) to rotate so that the positioning rod (12) changes position.

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