360-degree rotating sewing upper machine head

Abstract

The utility model discloses an upper sewing machine head capable of rotating by 360 degrees. The upper sewing machine head comprises a machine head frame, a machine head device, a machine head lifting mechanism and a machine head rotating mechanism. The machine head lifting mechanism is arranged on the machine head frame, the machine head rotating mechanism is arranged on the machine head frame through the machine head lifting mechanism and can move up and down, and the machine head device is arranged on the machine head frame through the machine head rotating mechanism and can rotate by 360 degrees. The machine head device comprises a needle bar mechanism, a needle bar driving mechanism, a presser foot, a presser foot transmission mechanism and a machine head shell. The presser foot transmission mechanism comprises a presser foot swing rod. The machine head device is characterized by further comprising a presser foot adjusting mechanism. The presser foot adjusting mechanism comprises an adjusting arm, one end of the adjusting arm is connected with the presser foot swing rod, and the angle of the presser foot swing rod is changed by changing the position of the adjusting arm.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing equipment, in particular to a 360-degree rotating sewing upper machine head capable of adjusting the angle. Background Art

[0002] Traditional sewing equipment generally includes an upper head and a lower head. The upper head drives the lower head to move synchronously through a transmission mechanism to achieve sewing. Since it requires a transmission mechanism to achieve synchronous operation of the upper and lower heads, this type of sewing head is usually connected up and down, and the sewing stitches need to be changed by changing the direction of the fabric during operation. The pattern machine sews by driving the fabric to move through the template to achieve personalized stitches. Therefore, the pattern machine is widely used in the sewing processing of handbags, leather goods, luggage, shoes, clothing and other products. The sewing stroke of the pattern machine is limited by the size of the sewing head. Chinese patent document CN 215251624U discloses a 360° rotating sewing device, including a rotating head mechanism and a rotating shuttle mechanism, wherein: the rotating head mechanism includes a head, a first motor, a first reducer, a first rotating platform, a first mounting plate, a lifting device, and a first gas-electric slip ring, the lifting device is mounted on the first rotating platform, the first motor is mounted on the first reducer, the first reducer is mounted on the first rotating platform, a first rotating disk is arranged on the first rotating platform, a gear transmission device is arranged in the first rotating platform, the first reducer drives the first rotating disk to rotate through the gear transmission device, the head is mounted on the first rotating disk through the first mounting plate, a through hole is arranged on the first rotating platform, the first gas-electric slip ring passes through the through hole and is mounted on the first mounting plate, and the first gas-electric slip ring connects the gas-electric line between the outside and the head; The rotary shuttle mechanism includes a rotary shuttle fixing platform, a second motor, a second reducer, a second rotating platform, a second mounting plate, and a second gas-electric slip ring. The second motor is mounted on the second reducer, the second reducer is mounted on the second rotating platform, a second rotating disk is arranged on the second rotating platform, a gear transmission device is arranged in the second rotating platform, the second reducer drives the second rotating disk to rotate through the gear transmission device, the rotary shuttle fixing platform is mounted on the second rotating disk through the second mounting plate, a through hole is arranged on the second rotating platform, the second gas-electric slip ring is mounted on the second mounting plate through the through hole, and the second gas-electric slip ring connects the gas-electric line between the outside and the rotary shuttle fixing platform; the first motor and the second motor intelligently control the speed through the circuit board. This structure separates the upper and lower machine heads, greatly improves the sewing range, and the machine heads can rotate, so the sewing stitches in all directions are uniform and beautiful. However, when sewing pattern machines, they often encounter situations where the thickness of the fabric is different. Some places have two layers of fabric, some places have three layers or even more, and some places only have a single layer, so the presser foot needs to adapt. Utility Model Content

[0003] The utility model aims to provide a 360-degree rotating sewing upper machine head with a simple structure and adjustable presser foot lifting height.

[0004] The basic technical scheme for achieving the purpose of the utility model is: a 360-degree rotating sewing upper head, including a head frame, a head device, a head lifting mechanism and a head rotating mechanism. The head lifting mechanism is arranged on the head frame, the head rotating mechanism can move up and down through the head lifting mechanism and is arranged on the head frame, and the head device can rotate 360 ​​degrees through the head rotating mechanism and is arranged on the head frame. The head device includes a needle bar mechanism, a needle bar driving mechanism, a presser foot, a presser foot transmission mechanism and a head shell. The presser foot transmission mechanism includes a presser foot swing rod.

[0005] Its structural features are: the machine head device also includes a presser foot adjustment mechanism. The presser foot adjustment mechanism includes an adjustment arm, one end of which is connected to a presser foot swing rod, and the angle of the presser foot swing rod is changed by changing the position of the adjustment arm, thereby adjusting the height of the presser foot backward.

[0006] Furthermore, in order to realize self-contained linear adjustment: the presser foot adjustment mechanism also includes an adjustment motor and an eccentric wheel. The adjustment motor is fixedly arranged on the machine head housing, and the eccentric wheel is fixedly arranged on the motor shaft of the adjustment motor. One end of the adjustment arm is hingedly connected to the presser foot swing rod, and the other end of the adjustment arm is located at the lower side of the eccentric wheel and contacts and cooperates with the eccentric wheel. The two ends of the adjustment arm are rotatably connected to the presser foot swing rod.

[0007] Furthermore, in order to ensure the mutual cooperation of the upper and lower separation heads, a head centering mechanism is also included, and the head centering mechanism includes a centering connection seat, a centering adjustment seat and a centering mounting seat. The relative position of the centering connection seat and the centering adjustment seat can be adjusted. The relative position of the centering adjustment seat and the centering mounting seat can be adjusted. The head device is fixedly arranged on the centering mounting seat by its head shell.

[0008] The utility model has the following beneficial effects: (1) The 360-degree rotating sewing upper head of the utility model has a simple structure, and the height of the presser foot can be automatically adjusted linearly when working, so as to adapt to the requirements of fabrics of different thicknesses and greatly improve the sewing quality.

[0009] (2) The 360-degree rotating sewing upper machine head of the utility model is provided with a centering device to ensure that it matches the lower machine head after installation and is easy to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the 360-degree rotating sewing upper machine head of the utility model.

[0011] Figure 2 for Figure 1 Schematic diagram of the right side.

[0012] Figure 3 For Figure 1 Schematic diagram when viewed from the upper left front.

[0013] Figure 4 For Figure 1 Schematic diagram when viewed from the upper right front.

[0014] Figure 5 for Figure 1 Schematic diagram of the head device in .

[0015] Figure 6 For Figure 5 Schematic diagram when viewed from the lower right front.

[0016] Figure 7 For Figure 5 Schematic diagram of the presser foot adjustment mechanism when viewed from the upper right rear of the .

[0017] Figure 8 For Figure 5 Schematic diagram of the presser foot adjustment mechanism when viewed from the upper right front.

[0018] Fig. 9 Schematic diagram of the machine head centering mechanism.

[0019] The reference numerals in the accompanying drawings are:

[0020] Headstock 1,

[0021] Head device 2, needle bar mechanism 2-1, needle bar drive mechanism 2-2, presser foot 2-3,

[0022] Presser foot transmission mechanism 2-4, presser foot driving rod 2-41, presser foot first connecting rod 2-42, crank connecting rod 2-43, presser foot third connecting rod 2-44, presser foot swing rod 2-45,

[0023] Presser foot adjustment mechanism 2-5, adjustment motor 2-51, eccentric wheel 2-52, adjustment arm 2-53, detection mechanism 2-54,

[0024] Head shell 2-6,

[0025] Head lifting mechanism 3, lifting connection seat 3-1, lifting drive device 3-2, lifting guide device 3-3,

[0026] Head rotating mechanism 4, gas-electric slip ring 4-1, rotating drive motor 4-2, reducer 4-3,

[0027] Machine head centering mechanism 5, centering connecting seat 5-1, through hole 5-11, centering adjustment seat 5-2, connecting seat adjusting screw 5-21, centering mounting seat 5-3, adjusting seat horizontal fixing screw 5-31, adjusting seat horizontal tightening screw 5-32. DETAILED DESCRIPTION

[0028] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in combination with the accompanying drawings. Figure 1 The direction shown is carried out, that is, Figure 1 The up, down, left, and right directions shown are the up, down, left, and right directions described. Figure 1 The left and right directions shown are X directions. Figure 1 The up and down direction is the Z direction, Figure 1 The direction is forward, away from Figure 1 The side is the rear, Figure 1 The front-to-back direction is the Y direction. The terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. It should be understood that the terms "upper", "lower", "inner", "outer", etc. indicating the orientation or positional relationship are based on the positional relationship described in the drawings, and are only for the convenience of describing the utility model or simplifying the description, rather than indicating a specific orientation that must be possessed.

[0029] (Example 1)

[0030] See Figures 1 to 9 The 360-degree rotating sewing upper machine head of the utility model comprises a machine head frame 1, a machine head device 2, a machine head lifting mechanism 3, a machine head rotating mechanism 4 and a machine head centering mechanism 5.

[0031] See Figures 1 to 8 The machine head device 2 includes a needle bar mechanism 2-1, a needle bar driving mechanism 2-2, a presser foot 2-3, a presser foot transmission mechanism 2-4, a presser foot adjustment mechanism 2-5 and a machine head housing 2-6. The needle bar mechanism 2-1, the needle bar driving mechanism 2-2, the presser foot 2-3 and the presser foot transmission mechanism 2-4 adopt the existing technology and are built into the existing machine head. The needle bar driving mechanism 2-2 drives the needle bar mechanism 2-1 to move up and down, and the needle bar driving mechanism 2-2 drives the presser foot 2-3 to move up and down through the presser foot transmission mechanism 2-4.

[0032] The presser foot transmission mechanism 2-4 comprises a presser foot driving rod 2-41, a presser foot first connecting rod 2-42, a crank connecting rod 2-43, a presser foot third connecting rod 2-44 and a presser foot swinging rod 2-45. The presser foot driving rod 2-41 is driven to swing by the needle bar driving mechanism 2-2. One end of the presser foot first connecting rod 2-42 is hingedly connected to the presser foot driving rod 2-41, the other end of the presser foot first connecting rod 2-42 is hingedly connected to one end of the crank connecting rod 2-43, the presser foot third connecting rod 2-44 is hingedly connected to the other end of the crank connecting rod 2-43, the two ends of the crank connecting rod 2-43 are hingedly connected to one end of the presser foot swinging rod 2-45, and the other end of the presser foot swinging rod 2-45 is rotatably arranged in the machine head shell 2-6. The upper end of the presser foot 2-3 is fixedly connected to the presser foot third connecting rod 2-44, and the presser foot 2-3 is slidably arranged in the machine head shell 2-6 along the up-down direction. Thus, the presser foot driving rod 2-41 drives one end of the crank connecting rod 2-43 to move through the presser foot first connecting rod 2-42, and the other end of the crank connecting rod 2-43 drives the presser foot 2-3 to move up and down. The presser foot swing rod 2-45 serves as the fulcrum of the crank connecting rod 2-43, so that the height of the presser foot 2-3 falling during operation can be changed by changing the angle of the presser foot swing rod 2-45.

[0033] See Figures 1 to 8 The presser foot adjustment mechanism 2-5 includes an adjustment motor 2-51, an eccentric wheel 2-52, an adjustment arm 2-53 and a detection mechanism 2-54. The adjustment motor 2-51 is fixedly arranged on the head shell 2-6, and the eccentric wheel 2-52 is fixedly arranged on the motor shaft of the adjustment motor 2-51. One end of the adjustment arm 2-53 is hingedly connected to the presser foot swing rod 2-45, and the other end of the adjustment arm 2-53 is located at the lower side of the eccentric wheel 2-52, and contacts and cooperates with the eccentric wheel 2-52. The two ends of the adjustment arm 2-53 are rotatably connected to the presser foot swing rod 2-45. Thereby, the adjustment arm 2-53 is changed in position through the eccentric wheel 2-52, and then the angle of the presser foot swing rod 2-45 is adjusted, that is, the height at which the adjustment presser foot 2-3 falls when working is changed, so as to adapt to fabrics of different thicknesses. The detection mechanism 2-54 adopts a detection photoeye, and the detection mechanism 2-54 is fixedly set on the head shell 2-6, and is used to detect whether the eccentric wheel 2-52 is reset.

[0034] See Figures 1 to 4The machine head lifting mechanism 3 includes a lifting connection seat 3-1, a lifting drive device 3-2 and a lifting guide device 3-3. The lifting drive device 3-2 can be driven by a cylinder or a motor. The present embodiment adopts a cylinder drive mode, including a lifting drive cylinder, which is fixedly arranged on the upper front end of the machine head frame 1. The lifting drive device 3-2 drives the lifting connection seat 3-1 to move up and down. The lifting guide device 3-3 includes two linear guide rails, which are arranged on the upper front end of the machine head frame 1 from left to right in sequence. The two linear guide rails are respectively fixedly arranged on the upper front end of the machine head frame 1 along the upper and lower directions by their respective guide rails, and the lifting connection seat 3-1 is fixedly arranged on the sliders of the two linear guide rails. The piston rod of the lifting drive cylinder of the lifting drive device 3-2 is fixedly connected to the lifting connection seat 3-1, so that the lifting drive device 3-2 drives the lifting connection seat 3-1 to move up and down along the lifting guide device 3-3, so that the operation is more stable and accurate.

[0035] See Figures 1 to 4 The machine head rotating mechanism 4 includes a gas-electric slip ring 4-1, a rotary drive motor 4-2 and a reducer 4-3. The reducer 4-3 is fixedly arranged on the lifting connection seat 3-1. Therefore, the machine head rotating mechanism 4 can be moved up and down on the machine head frame 1 through the machine head lifting mechanism 3. The slip ring stator of the gas-electric slip ring 4-1 is fixedly arranged on the reducer 4-3. The reducer 4-3 adopts a right-angle reducer, and the output shaft of the right-angle reducer is vertically arranged in the up and down directions. The output shaft of the right-angle reducer is a hollow shaft. The slip ring rotor of the gas-electric slip ring 4-1 is coaxially fixedly arranged on the upper end of the output shaft of the right-angle reducer, and the rotary drive motor 4-2 is fixedly arranged on the reducer 4-3. The motor shaft of the rotary drive motor 4-2 is drivingly connected to the input end of the right-angle reducer.

[0036] See Figures 1 to 4 and Fig. 9The machine head centering mechanism 5 includes a centering connection seat 5-1, a centering adjustment seat 5-2 and a centering mounting seat 5-3. The machine head device 2 is fixedly arranged on the centering mounting seat 5-3 by its machine head shell 2-6. The centering connection seat 5-1 is provided with a through hole 5-11 running through it from top to bottom. The centering connection seat 5-1 is fixedly connected to the lower end of the output shaft of the reducer 4-3. The through hole 5-11 is coaxially arranged with the output shaft of the reducer 4-3, so that the machine head device 2 can be rotatably arranged on the machine head frame 1 by 360 degrees through the machine head rotating mechanism 4. The centering connecting seat 5-1 is fixedly set on the centering adjustment seat 5-2. Two connecting seat adjustment screws 5-21 are arranged opposite to each other along the radial direction of the through hole 5-11 on the centering adjustment seat 5-2. The two connecting seat adjustment screws 5-21 are located on the opposite sides of the centering adjustment seat 5-2, and support the corresponding parts of the centering adjustment seat 5-2 from both sides, so that the relative position of the centering connecting seat 5-1 and the centering adjustment seat 5-2 can be adjusted. The centering adjustment seat 5-2 is fixedly arranged on the centering mounting seat 5-3. Two adjustment seat horizontal fixing screws 5-31 are arranged on the centering mounting seat 5-3 in a direction perpendicular to the axis of the connecting seat adjusting screw 5-21. The two adjustment seat horizontal fixing screws 5-31 are respectively located on both sides of the axis of the through hole 5-11. The two adjustment seat horizontal fixing screws 5-31 are screwed and fixed on the centering adjustment seat 5-2; two adjustment seat horizontal tightening screws 5-32 are also arranged on the centering mounting seat 5-3 in a direction perpendicular to the axis of the connecting seat adjusting screw 5-21. The two adjustment seat horizontal fixing screws 5-31 are respectively located on both sides of the axis of the through hole 5-11. The two adjustment seat horizontal tightening screws 5-32 are screwed on the centering mounting seat 5-3, and the corresponding parts support the centering adjustment seat 5-2. Thereby, the relative position of the centering adjustment seat 5-2 and the centering mounting seat 5-3 can be fine-tuned, thereby realizing the position adjustment of the centering mounting seat 5-3 on the horizontal plane, that is, realizing the position adjustment of the head device 2, thereby ensuring coordination with the corresponding lower head.

[0037] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A 360-degree rotating sewing upper head, comprising a head frame (1), a head device (2), a head lifting mechanism (3) and a head rotating mechanism (4); the head lifting mechanism (3) is arranged on the head frame (1); the head rotating mechanism (4) is arranged on the head frame (1) and can move up and down through the head lifting mechanism (3); the head device (2) is arranged on the head frame (1) and can rotate 360 ​​degrees through the head rotating mechanism (4); the head device (2) comprises a needle bar mechanism (2-1), a needle bar driving mechanism (2-2), a presser foot (2-3), a presser foot transmission mechanism (2-4) and a head shell (2-6); the presser foot transmission mechanism (2-4) comprises a presser foot swing rod (2-45); Features: The machine head device (2) further comprises a presser foot adjustment mechanism (2-5); the presser foot adjustment mechanism (2-5) comprises an adjustment arm (2-53), one end of the adjustment arm (2-53) is connected to a presser foot swing rod (2-45), and the angle of the presser foot swing rod (2-45) is changed by changing the position of the adjustment arm (2-53).

2. The 360-degree rotating sewing upper head according to claim 1, characterized in that: The presser foot adjustment mechanism (2-5) further comprises an adjustment motor (2-51) and an eccentric wheel (2-52); the adjustment motor (2-51) is fixedly arranged on the machine head housing (2-6), and the eccentric wheel (2-52) is fixedly arranged on the motor shaft of the adjustment motor (2-51); one end of the adjustment arm (2-53) is hingedly connected to the presser foot swing rod (2-45), and the other end of the adjustment arm (2-53) is located at the lower side of the eccentric wheel (2-52) and is in contact with the eccentric wheel (2-52); and the two ends of the adjustment arm (2-53) are rotatably connected to the presser foot swing rod (2-45).

3. The 360-degree rotating sewing upper head according to claim 1, characterized in that: The machine head centering mechanism (5) is also included. The machine head centering mechanism (5) includes a centering connection seat (5-1), a centering adjustment seat (5-2) and a centering mounting seat (5-3); the relative position of the centering connection seat (5-1) and the centering adjustment seat (5-2) is adjustable; the relative position of the centering adjustment seat (5-2) and the centering mounting seat (5-3) is adjustable; and the machine head device (2) is fixedly arranged on the centering mounting seat (5-3) by its machine head shell (2-6).

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