Sewing machine with needle bar and rotating shuttle rotating synchronously

Abstract

The utility model discloses a sewing machine with a needle bar and a rotating shuttle rotating synchronously, which comprises a machine shell lower seat, a rotating shuttle component, a sewing upper machine shell and a driving device, and the sewing upper machine shell is provided with the needle bar; the driving device drives the rotating shuttle assembly and the needle rod to rotate synchronously, the driving device comprises a driving rod, the driving rod is connected with the needle rod, the driving device controls the needle rod and the rotating shuttle assembly to rotate synchronously through mechanical linkage, and compared with synchronous rotation of an upper motor and a lower motor, rotation overshoot caused by different loads of an upper mechanism and a lower mechanism is avoided. In the process of sewing patterns by the sewing machine, the direction of the threading hole of the needle rod and the rotating shuttle assembly can be synchronously changed along with sewing stitches, so that the thread outlet direction of the needle and the stitches are matched when various patterns are sewn, and any angle can be set; and various stitch requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine field technology especially is a needle bar and shuttle synchronous rotation's sewing machine. BACKGROUND

[0002] At present, computer pattern machine is widely used in various handbags, clothing, textiles, leather, luggage, shoemaking, leather belt, sports equipment and other sewing processing, since computer pattern machine is controlled by computer, it can realize the design pattern sewing on the fabric, usually can satisfy more stable, beautiful, complex various sewing stitches.

[0003] In the prior art, for example: CN103194861B discloses an intelligent full synchronization pattern sewing machine, which comprises a machine shell, a needle bar synchronous rotation mechanism arranged at one end of the machine shell, a shuttle bed synchronous rotation mechanism arranged below the needle bar synchronous rotation mechanism and synchronous with the needle bar synchronous rotation mechanism to make the sewing direction of the sewing needle consistent with the set stitch at all times, the needle bar synchronous rotation mechanism comprises a needle bar arranged on the machine shell for inserting the sewing needle, a balance mechanism connected with the upper shaft of the sewing mechanism for driving the needle bar to move up and down, and a third motor arranged on the machine shell for driving the needle bar to rotate, and the rotor of the third motor is provided with a longitudinal through hole, the upper end of the needle bar is inserted into the longitudinal through hole and is in transmission connection with the rotor and can move up and down along the longitudinal through hole.

[0004] Since the needle bar and the shuttle are driven by two different motors during high-speed rotation, the needle bar and the shuttle are driven by two different motors, so that the needle bar and the shuttle are driven by two different motors, and the needle bar and the shuttle are driven by two different motors.

[0005] For example: CN207193528U discloses a template sewing machine with automatic rotation of upper and lower sewing mechanisms, which comprises a machine head and a machine frame, the machine head is fixed above the machine frame through a connecting part, the other end of the machine head relative to the connecting part is provided with an upper sewing mechanism, and the machine frame is provided with a lower sewing mechanism at a position corresponding to the upper sewing mechanism, the upper and lower sewing mechanisms are respectively fixed on the machine head and the machine frame through upper and lower rotating mechanisms, and the upper and lower rotating mechanisms are respectively connected with a synchronous driving mechanism through upper and lower transmission shafts.

[0006] Therefore, there is a need to study a new technical solution to solve the above problems. Utility model content

[0007] Therefore, the utility model discloses a needle bar and shuttle synchronous rotation's sewing machine, its through the cooperation between drive device, drive rod and needle bar, drive device drives the synchronous rotation of shuttle assembly and needle bar, drive device includes drive rod, drive rod is connected with needle bar, like this, drive device controls needle bar and shuttle assembly mechanical linkage synchronous rotation, compared with the method that two motors rotate synchronously, avoids the error caused by the different load rotation overshoot of upper and lower mechanisms, guarantees the force balance when top thread and bottom thread are sewn in the hooking position during subsequent sewing, and the stitch is tight, neat, uniform and beautiful, improves the quality of sewing, improves the stability of product quality and can effectively avoid the danger to people when manually holding the material machine head during sewing.

[0008] To achieve the above object, the utility model adopts the following technical scheme:

[0009] A needle bar and shuttle synchronous rotation's sewing machine, including:

[0010] A lower seat of a machine shell;

[0011] A shuttle assembly is arranged in the lower seat of the machine shell;

[0012] A sewing upper machine shell is arranged in the lower seat of the machine shell, and the sewing upper machine shell at least includes a needle bar arranged towards the shuttle assembly;

[0013] A drive device drives the synchronous rotation of the shuttle assembly and the needle bar, and the drive device includes a drive rod, and the drive rod is connected with the needle bar.

[0014] As a preferred scheme, the drive rod is arranged in the sewing upper machine shell and extends in the front-rear direction, the needle bar is arranged in the sewing upper machine shell and extends in the up-down direction and is close to one end of the drive rod, and the positions of the drive rod and the needle bar are designed to make the overall structure compact and the sewing machine occupy small space.

[0015] As a preferred scheme, a first bevel gear is arranged on one end of the needle bar away from the shuttle assembly, a second bevel gear is arranged on one end of the drive rod close to the first bevel gear, the first bevel gear and the second bevel gear are connected with each other in meshing, the drive rod and the needle bar adopt the meshing transmission mode of bevel gears, which is fast and convenient to assemble and has high transmission precision, compared with the mode of pulling the synchronous belt, can avoid the problem that the swing angle of the sewing needle deviates due to the vibration of the sewing upper machine shell;And its structure is simple, ingenious and reasonable, the overall structure is compact, and the sewing machine occupies small space.

[0016] As a preferred scheme, the driving device further comprises a transmission shaft, and a third bevel gear is arranged on one end of the driving rod away from the needle rod, and a fourth bevel gear is arranged on one end of the transmission shaft close to the third bevel gear, and the third bevel gear and the fourth bevel gear are connected in meshing.

[0017] As a preferred scheme, the lower seat of the machine shell further comprises a rotating device, and the rotating hook assembly is arranged on the rotating device; the output end of the driving device is further connected with a transmission member, the transmission shaft is in transmission connection with the transmission member; the rotating device and the transmission member are in transmission connection through a linkage member, so that the driving device controls the rotating hook assembly and the needle rod to rotate synchronously.

[0018] As a preferred scheme, the linkage member is a transmission belt.

[0019] As a preferred scheme, the lower seat of the machine shell further comprises a guide rail mounting seat, a Y-axis guide rail, an airplane frame for fixing materials, and a Y-axis translation driving device for driving the airplane frame to move along the Y-axis.

[0020] The airplane frame is provided with a Y-axis sliding block and a rack, the Y-axis sliding block is slidably arranged on the Y-axis guide rail in the front-rear direction; the Y-axis translation driving device comprises a Y-axis motor and a driving gear, the driving gear is in meshing connection with the rack, the Y-axis motor drives the driving gear to rotate, so as to drive the rack to translate forward and backward, and at the same time, the Y-axis sliding block translates forward and backward along the Y-axis guide rail, so as to drive the airplane frame to translate forward and backward along the guide rail mounting seat.

[0021] As a preferred scheme, the driving device comprises a transmission shaft, a transmission rod and a linkage member; the transmission shaft is sequentially sleeved with a first rotating pulley and a second rotating pulley from bottom to top; the linkage member comprises a first linkage member and a second linkage member, one end of the first linkage member is connected with the first rotating pulley, and the other end of the first linkage member is connected with the rotating device; a third rotating pulley is arranged on one end of the transmission shaft close to the driving device; the third rotating pulley is in transmission connection with the second rotating pulley through the second linkage member, and the transmission design of the first linkage member and the second linkage member makes the sewing work without sliding, has accurate transmission ratio, high transmission efficiency, ensures uniform sewing needle distance, good consistency of sewing quality, makes the working process of the sewing machine shell more stable, and the buffering effect is more soft

[0022] The utility model discloses a driving device, driving rod and needle bar between the cooperation, the driving device drive rotary hook assembly and needle bar synchronous rotation, the driving device includes the driving rod, the driving rod is connected with needle bar, like this, make driving device control needle bar and rotary hook assembly mechanical linkage synchronous rotation, compared with the method that two motors rotate synchronously, avoid the error caused by the different rotation overshoot of upper and lower mechanism load, guarantee the force balance when sewing the top thread and the bottom thread in the hooking position when sewing, and the stitch is tight, neat, even and beautiful, improve the quality of sewing, improve the stability of product quality;

[0023] Then, the needle bar thread hole direction and rotary hook assembly direction can change with the change of the stitch of the sewing pattern during the process of the sewing machine sewing the pattern, ensuring the cooperation between the needle bar thread direction and the stitch during the sewing of various patterns, and the cooperation can be set to any angle artificially, improving the quality of sewing and the appearance and stability of the stitch.

[0024] Finally, the needle bar is rotated independently, and the volume is small, so that the radius of rotation is reduced, thereby effectively avoiding the danger to the person when the person manually holds the material head during the rotation of the sewing machine.

[0025] To make the structure characteristics and functions of the utility model clearer, the utility model will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the perspective view of the embodiment one of the utility model;

[0027] Figure 2 It is another perspective view of the embodiment one of the utility model;

[0028] Figure 3 It is the perspective view of the embodiment two of the utility model;

[0029] Figure 4 It is another perspective view of the embodiment two of the utility model;

[0030] Figure 5 It is the perspective view of the embodiment three of the utility model;

[0031] Figure 6 It is another perspective view of the embodiment three of the utility model;

[0032] Figure 7 It is the partial structure schematic view of the embodiment three of the utility model.

[0033] EXPLANATION OF THE DRAWINGS:

[0034] 1, the lower seat of the machine shell 11, rotating device

[0035] 12, rail mounting seat 13, Y-axis guide rail

[0036] 14, aircraft frame 15, Y-axis translation driving device

[0037] 141, Y-axis slider 142, rack

[0038] 151, Y-axis motor 152, driving gear

[0039] 2, rotating shuttle assembly

[0040] 3, sewing upper machine shell 31, needle bar

[0041] 311, the first bevel gear

[0042] 4, driving device 41, driving rod

[0043] 42, transmission rod 43, transmission member

[0044] 44, linkage 45, transmission shaft

[0045] 46, transfer platform

[0046] 411, the second bevel gear 412, the third bevel gear

[0047] 421, the fourth bevel gear

[0048] 451, the first rotating pulley 452, the second rotating pulley

[0049] 453, the third rotating pulley

[0050] 441, the first linkage 442, the second linkage. DETAILED DESCRIPTION

[0051] Please refer to Figures 1 to 7 Fig. 1 shows the specific structure of various embodiments of the present application.

[0052] In the description of the present application, it should be pointed out that for the orientation words, such as the terms "up", "down", "front", "back", "left", "right" and the like indicate the orientation and positional relationship based on the drawings or the normal wearing and using orientation, only for the convenience of describing the present application and simplifying the description, and not indicating or implying that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0053] As Figures 1 to 2 shown, it embodies the specific structure of the first embodiment.

[0054] The sewing machine with needle bar 31 and rotating hook synchronous rotation comprises a machine shell lower seat 1, a rotating hook assembly 2, a sewing machine upper shell 3 and a driving device 4.

[0055] The rotating hook assembly 2 is arranged on the machine shell lower seat 1.

[0056] The machine shell lower seat 1 is further provided with a guide rail mounting seat 12, a Y-axis guide rail 13, an aircraft frame 14 for fixing materials, and a Y-axis translation driving device 15 for driving the aircraft frame 14 to move along the Y-axis.

[0057] The aircraft frame 14 is provided with a Y-axis sliding block 141 and a rack 142, the Y-axis sliding block 141 is slidably arranged on the Y-axis guide rail 13 in the front and back directions; the Y-axis translation driving device 15 comprises a Y-axis motor 151 and a driving gear 152, the driving gear 152 is engaged with the rack 142, the Y-axis motor 151 drives the driving gear 152 to rotate, thereby driving the rack 142 to move forward and backward, at the same time, the Y-axis sliding block 141 moves forward and backward along the Y-axis guide rail 13, thereby driving the aircraft frame 14 to move forward and backward along the guide rail mounting seat 12.

[0058] The sewing machine upper shell 3 is arranged on the machine shell lower seat 1, and the sewing machine upper shell 3 at least comprises a needle bar 31 arranged towards the rotating hook assembly 2; the needle bar 31 is arranged in the up and down direction and is arranged in the sewing machine upper shell 3 and close to one end of the following driving rod 41.

[0059] The driving device 4 drives the rotating hook assembly 2 and the needle bar 31 to rotate synchronously, and the driving device 4 comprises a driving rod 41, and the driving rod 41 is connected with the needle bar 31. Preferably, the driving rod 41 is arranged in the front and back directions and is arranged in the sewing machine upper shell 3, so that the overall structure is compact and the sewing machine occupies small space.

[0060] Preferably, the needle bar 31 is provided with a first helical gear 311 at one end away from the rotating hook assembly 2, the driving rod 41 is provided with a second helical gear 411 at one end close to the first helical gear 311, the first helical gear 311 and the second helical gear 411 are engaged with each other, the driving rod 41 and the needle bar 31 adopt the helical gear engagement transmission mode, which is fast and convenient to assemble and has high transmission precision, compared with the synchronous belt pulling mode, the problem that the swing angle of the sewing needle deviates due to vibration of the sewing machine upper shell 3 can be avoided; and the structure is simple, ingenious and reasonable, the overall structure is compact, and the sewing machine occupies small space.

[0061] Preferably, the driving device 4 further comprises a transmission rod 42, the driving rod 41 is provided with a third bevel gear 412 at one end away from the needle rod 31, the transmission rod 42 is provided with a fourth bevel gear 421 at one end close to the third bevel gear 412, and the third bevel gear 412 and the fourth bevel gear 421 are connected with each other in meshing connection. The driving rod 41 and the transmission rod 42 adopt the bevel gear meshing transmission mode, which is fast and convenient to assemble and has high transmission precision, and can avoid the problem that the swing angle of the sewing needle deviates due to the vibration of the sewing machine housing 3 compared with the synchronous belt pulling mode; and the structure is simple, ingenious and reasonable, the whole is compact, and the sewing machine occupies small space.

[0062] The output end of the driving device 4 is further connected with a transmission member 43, the transmission rod 42 is transmissionally connected to the transmission member 43; and the rotary device 11 and the transmission member 43 are transmissionally connected through a linkage member 44, so that the driving device 4 controls the rotary shuttle assembly 2 and the needle rod 31 to rotate synchronously.

[0063] As shown in Figures 1 to 2 , the output end of the driving device 4 is connected with a transfer platform 46, the transmission member 43 is arranged on the transfer platform 46, and the driving device 4 is arranged below the lower seat 1 of the machine housing and close to the rear side. Wherein, the arrangement position of the driving device 4 can be installed to the corresponding position according to the actual needs, which is not described herein.

[0064] Preferably, the linkage member 44 is a transmission belt, in this embodiment, the transmission belt can be a synchronous belt or a belt or a conveying belt, etc., which can select the corresponding component according to the actual needs, which is not described herein. Wherein, the machine housing lower seat 1 is further provided with a tension pulley, the tension pulley is arranged on the machine housing lower seat 1 through a support, and the linkage member passes through the tension pulley to adjust the tightness of the linkage member.

[0065] As shown in Figures 3 to 4 , the specific structure of this embodiment two is embodied, and the difference between this embodiment two and the embodiment one is that:

[0066] The driving device 4 is arranged below the lower seat 1 of the machine housing and close to the front side, in this embodiment, the driving device is located beside the lower end side of the rotary device 11.

[0067] As shown in Figures 5 to 7 , the specific structure of this embodiment three is embodied, and the difference between this embodiment three and the embodiment two is that:

[0068] The driving device 4 comprises a transmission shaft 45, a transmission rod 42 and a linkage; the transmission shaft 45 is sequentially sleeved with a first rotary pulley 451 and a second rotary pulley 452 from bottom to top; the linkage comprises a first linkage 441 and a second linkage 442, one end of the first linkage 441 is connected to the first rotary pulley 451, and the other end of the first linkage 441 is connected to the rotary device 11; the transmission shaft 45 is provided with a third rotary pulley 453 on the end close to the driving device 4; the third rotary pulley 453 is drivingly connected to the second rotary pulley 452 through the second linkage 442.

[0069] The driving device 4 is arranged on the bottom end surface of the lower shell 1 close to the middle.

[0070] In the embodiment, the first rotary pulley 451, the second rotary pulley 452, the third rotary pulley 453 and the first linkage 441 and the second linkage 442 are limited by a limiting structure, which can be a tension pulley assembly, a bearing or a limiting plate, and the limiting structure is a known technology in the art and will not be described here.

[0071] The design focus of the utility model lies in: it mainly cooperates between the driving device, the driving rod and the needle bar, the driving device drives the rotary hook assembly and the needle bar to rotate synchronously, the driving device comprises a driving rod, the driving rod is connected with the needle bar, so that the driving device controls the needle bar and the rotary hook assembly to rotate synchronously in mechanical linkage, compared with the method that the two motors rotate synchronously, the error caused by the different rotation overshoot of the upper and lower mechanisms is avoided, the force balance is ensured when the top thread and the bottom thread are sewn at the hooking position during subsequent sewing, the stitch is tight, neat, uniform and beautiful, the quality of sewing is improved, and the stability of product quality is improved.

[0072] Then, during the process of sewing the pattern of the sewing machine, the direction of the needle bar threading hole and the rotary hook assembly can change with the change of the stitch of the sewing pattern, so that the cooperation between the direction of the sewing needle bar and the stitch can be artificially set at any angle during the sewing of various patterns, the quality of sewing is improved, and the beauty and stability of the stitch are improved.

[0073] Finally, the needle bar is independently rotated, which is small in size and reduces the rotation radius, so that the danger to the person when manually holding the material head during the rotation of the sewing machine is effectively avoided.

[0074] The above is only a preferred embodiment of the utility model, and does not limit the technical range of the utility model, so any slight modification, equivalent change and modification made according to the technical essence of the utility model still belong to the range of the technical scheme of the utility model.

Claims

1. A sewing machine in which the needle bar and the rotary hook rotate synchronously, characterized in that: The utility model relates to a sewing machine, comprising: a lower case; a rotating shuttle assembly arranged in the lower case; an upper sewing case arranged in the lower case, the upper sewing case comprising at least a needle bar arranged towards the rotating shuttle assembly; a driving device for driving the rotating shuttle assembly and the needle bar to rotate synchronously, the driving device comprising a driving rod connected with the needle bar.

2. The sewing machine of claim 1, wherein: The driving rod extends in the front-rear direction and is arranged in the upper sewing case, and the needle bar extends in the up-down direction and is arranged in the upper sewing case close to one end of the driving rod.

3. The sewing machine of claim 1 wherein: One end of the needle bar away from the rotating shuttle assembly is provided with a first bevel gear, and one end of the driving rod close to the first bevel gear is provided with a second bevel gear, the first bevel gear and the second bevel gear are connected with each other in meshing.

4. The sewing machine of claim 1 wherein: The driving device further comprises a transmission rod, one end of the driving rod away from the needle bar is provided with a third bevel gear, and one end of the transmission rod close to the third bevel gear is provided with a fourth bevel gear, the third bevel gear and the fourth bevel gear are connected with each other in meshing.

5. The sewing machine of claim 4, wherein: The lower case is further provided with a rotating device, the rotating shuttle assembly is arranged on the rotating device; the driving device is arranged in the lower case, the output end of the driving device is further connected with a transmission member, the transmission rod is transmissionally connected to the transmission member; the rotating device and the transmission member are transmissionally connected through a linkage member, so that the driving device controls the rotating shuttle assembly and the needle bar to rotate synchronously.

6. The sewing machine of claim 5, wherein: The linkage member is a transmission belt.

7. The sewing machine of claim 1 wherein: The lower case is further provided with a guide rail mounting base, a Y-axis guide rail, an airplane frame for fixing materials, a Y-axis translation driving device for driving the airplane frame to move along the Y-axis; The airplane frame is provided with a Y-axis slider and a rack, the Y-axis slider is slidably arranged on the Y-axis guide rail in the front-rear direction; the Y-axis translation driving device comprises a Y-axis motor and a driving gear, the driving gear is meshed with the rack, the Y-axis motor drives the driving gear to rotate, so as to drive the rack to translate forward and backward, at the same time, the Y-axis slider translates forward and backward along the Y-axis guide rail, so as to link the airplane frame to translate forward and backward along the guide rail mounting base.

8. The sewing machine with needle bar and hook synchronized rotation according to claim 1, characterized in that: The driving device comprises a transmission shaft, a transmission rod and a linkage member; the transmission shaft is sequentially sleeved with a first rotating pulley and a second rotating pulley from bottom to top; the linkage member comprises a first linkage member and a second linkage member, one end of the first linkage member is connected to the first rotating pulley, and the other end of the first linkage member is connected to the rotating device; One end of the transmission shaft close to the driving device is provided with a third rotating pulley; The third rotating pulley is transmissionally connected to the second rotating pulley through the second linkage member.

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