阅读说明：本技术 一种圆头锁眼机 (Eyelet buttonhole sewing machine ) 是由 薛洪德 于 2021-03-02 设计创作，主要内容包括：本发明公开了一种圆头锁眼机,包括机架,机架上设置有工作台,所述工作台上设置有滑台机构；所述机架包括机头,所述机头上设置有针杆机构,针杆机构设置于工作台的正上方；所述机架内部设置有用于驱动针杆机构运动的切刀机构,所述切刀机构包括切刀气缸,所述切刀气缸通过若干驱动杆与针杆机构动力相连。所述机架上设置有用于收紧和放松缝纫线的挑线机构。设置单个切刀气缸实现运动,大大的简化了设备驱动机构的结构,提高设备的稳定性,并能减少设备的维护成本；通过设置挑线机构,对线材进行自动收紧,在每次扎针的时候放松线材,提高扎入效果,在收针时收紧线材,提高每一次缝纫的质量,保证缝纫的稳定性。(The invention discloses a round head buttonhole sewing machine which comprises a rack, wherein a workbench is arranged on the rack, and a sliding table mechanism is arranged on the workbench; the machine frame comprises a machine head, a needle rod mechanism is arranged on the machine head, and the needle rod mechanism is arranged right above the workbench; the cutting mechanism is characterized in that a cutting mechanism used for driving the needle rod mechanism to move is arranged inside the rack and comprises a cutting cylinder, and the cutting cylinder is connected with the needle rod mechanism through a plurality of driving rods in a power mode. And the frame is provided with a thread take-up mechanism for tightening and loosening sewing threads. A single cutter cylinder is arranged to realize movement, so that the structure of the driving mechanism of the equipment is greatly simplified, the stability of the equipment is improved, and the maintenance cost of the equipment can be reduced; through setting up take-up mechanism, tighten up the wire rod automatically, relax the wire rod when the needle is pricked at every turn, improve and prick the effect, tighten up the wire rod when the narrowing, improve the quality of sewing every turn, guarantee the stability of sewing.)

1. The utility model provides a button head buttonhole maker which characterized in that: the device comprises a rack (1), wherein a workbench (2) is arranged on the rack (1), and a sliding table mechanism (3) is arranged on the workbench (2); the machine frame (1) comprises a machine head (9), a needle rod mechanism (4) is arranged on the machine head (9), and the needle rod mechanism (4) is arranged right above the workbench (2); a cutter mechanism for driving the needle bar mechanism (4) to move is arranged in the rack (1), the cutter mechanism comprises a cutter cylinder (5), and the cutter cylinder (5) is in power connection with the needle bar mechanism (4) through a plurality of driving rods; the machine frame (1) is provided with a thread take-up mechanism for tightening and loosening sewing threads; the thread take-up mechanism comprises a rotating shaft (10), and the rotating shaft (10) is in synchronous power connection with the needle bar mechanism (4).

2. A buttonhole machine according to claim 1, characterized in that: the utility model discloses a cutter, including cutter cylinder (5), hinge and frame (1), the bottom swing joint of cutter cylinder (5) one end through hinge and frame (1), the expansion end of cutter cylinder (5) has cylinder big connecting rod (6) through hinged joint, the one end of cylinder big connecting rod (6) passes through hinge swing joint in frame (1), the other end and the cutter cylinder (5) power of cylinder big connecting rod (6) link to each other.

3. A buttonhole machine according to claim 2, characterized in that: the middle part of the large cylinder connecting rod (6) is connected with a small cutter connecting rod (7) through a hinge, one end of the small cutter connecting rod (7) is movably connected with the middle part of the large cylinder connecting rod (6), and the other end of the small cutter connecting rod (7) is connected with a cutter lever (8) through a hinge.

4. A buttonhole machine according to claim 3, characterized in that: the middle part of the cutter lever (8) is movably connected to the rack (1) through a hinge, one end of the cutter lever (8) is hinged to the cutter small connecting rod (7), and the other end of the cutter lever (8) is in power connection with the needle rod mechanism (4).

5. A buttonhole machine according to claim 1, characterized in that: two parallel cams (11) are arranged on the rotating shaft (10); a thread take-up lever (12) is arranged between the two cams (11), one end of the thread take-up lever (12) is fixed on the rack (1), and a threading hole is formed in the tail end of the thread take-up lever (12).

6. A buttonhole machine according to any one of claims 1 to 5, characterized in that: the sliding table mechanism (3) comprises an X-axis movement mechanism and a Y-axis movement mechanism, the X-axis movement mechanism is arranged on the Y-axis movement mechanism, and the Y-axis movement mechanism is arranged on the workbench (2).

7. A buttonhole machine according to claim 6, characterized in that: the Y-axis movement mechanism comprises a Y-axis movement fixing shaft (18) and a Y-axis movable platform, the Y-axis movable platform is arranged on the Y-axis movement fixing shaft (18), and two ends of the Y-axis movement fixing shaft (18) are arranged on the workbench (2).

8. A buttonhole machine according to claim 7, characterized in that: a Y-axis motor (20) is arranged on the workbench (2), and a Y-axis motion gear (21) is arranged on a rotating shaft of the Y-axis motor (20); and a Y-axis moving rack (22) is arranged on the Y-axis movable platform, and the Y-axis moving rack (22) is meshed with the Y-axis moving gear (21).

9. A buttonhole machine according to claim 8, characterized in that: the X-axis movement mechanism comprises an X-axis movement shaft (13) and an X-axis movable platform, and the X-axis movement shaft (13) is fixedly connected with the X-axis movable platform; a linear bearing (14) is arranged on the Y-axis movable platform, and the X-axis moving shaft (13) is sleeved in the linear bearing (14); the X-axis movable platform is movably connected with the Y-axis movable platform through an X-axis moving shaft pin (19); an X-axis motor (16) is arranged on the Y-axis movable platform, an X-axis moving gear (17) is arranged on a rotating shaft of the X-axis motor (16), an X-axis moving rack (15) is arranged on the X-axis movable platform, and the X-axis moving rack (15) is meshed with the X-axis moving gear (17).

Technical Field

The invention relates to the field of sewing machines, in particular to a round head buttonhole sewing machine capable of automatically winding.

Background

In recent years, the Chinese sewing equipment industry enters an unprecedented vigorous development stage, foreign advanced technologies are introduced, foreign modernized management modes are initiatively absorbed and accepted, the performance and the technology of domestic equipment are greatly improved, the process of mechanical-electrical integration is accelerated, the development strength of domestic enterprises is also enhanced, the stability and the advancement of the equipment are ensured, and at present, equipment of several known brands in China is highly approved by a plurality of known clothing enterprises.

The buttonhole sewing machine is an important device in clothing machinery, is mainly used for processing buttonholes in various clothes and is divided into a flat buttonhole sewing machine and a round head buttonhole sewing machine, and is divided into a closing type and a non-closing type. The eyelet buttonhole sewing machine is an industrial sewing machine special for sewing thick clothes buttonholes in a lock. By "round head" it is meant that the front end of the buttonhole of the suture lock is circular. It features beautiful buttonhole shape and uniform and firm stitch. The buttonhole sewing machine system generally comprises nine major mechanisms, namely a feeding mechanism, a crochet hook mechanism, a needle rod mechanism, a stretching mechanism, a hook shuttle mechanism, an upper cutter mechanism, a sliding table mechanism and a thread separating mechanism. Each set of mechanism has the characteristics and functions of the mechanism, has relative independence, but is closely matched and coordinated in work. The buttonhole sewing machine generally adopts a swinging needle rod, a double curved needle, a double fork needle for hooking a thread and a double thread for overedging and sewing a composite chain stitch. The elastic presser foot structure of the buttonholing machine is automatically suitable for clamping different fabric thicknesses. The operator can realize sewing buttonholes with various shapes and sizes by simply exchanging the two cams. The automatic upper thread cutting device is convenient to operate, and leaves the proper upper thread length required by the initial sewing to ensure the buttonhole sewing. The machine can quickly switch between cutting before sewing and sewing before cutting.

When the existing buttonhole machine is used for processing various clothes, the stitches of buttonhole opening buttonholes are uneven, the yield is not high, the quality is unstable, and the production efficiency and the production quality are reduced; and the movement mechanism of the device is complex, and the tightness of the thread is not easy to adjust, resulting in poor sewing effect.

Disclosure of Invention

The invention aims to: to the problem that above-mentioned exists, provide a button head buttonhole maker, solved the too complicated problem of motion of button head buttonhole maker, solved the unstable problem of button head buttonhole maker processingquality, solved the button head buttonhole maker and at the during operation problem that wire rod elasticity grammar was adjusted.

The technical scheme adopted by the invention is as follows:

a round head buttonhole sewing machine comprises a frame, wherein a workbench is arranged on the frame, and a sliding table mechanism is arranged on the workbench; the machine frame comprises a machine head, a needle rod mechanism is arranged on the machine head, and the needle rod mechanism is arranged right above the workbench; the cutting mechanism is characterized in that a cutting mechanism used for driving the needle rod mechanism to move is arranged inside the rack and comprises a cutting cylinder, and the cutting cylinder is connected with the needle rod mechanism through a plurality of driving rods in a power mode. The traditional equipment realizes the motion of the eyelet buttonhole machine by arranging a plurality of cylinders, and has low efficiency, complex structure and poor stability and reliability. Through setting up single cylinder drive, can simplify the structure of equipment, improve the stability and the reliability of equipment.

The machine frame is provided with a thread take-up mechanism for tightening and loosening sewing threads; the thread take-up mechanism comprises a rotating shaft, and the rotating shaft is in synchronous power connection with the needle rod mechanism. When the needle is pulled out, the sewing thread is tightened to tighten the stitch, so that the sewing effect is ensured.

Further, the invention discloses a preferable structure of the round-head buttonholing machine, wherein one end of a cutter cylinder is movably connected with the bottom of a rack through a hinge, and the cutter cylinder can freely rotate when being stretched and retracted, so that smooth operation of equipment is ensured. The movable end of the cutter cylinder is connected with a cylinder large connecting rod through a hinge, one end of the cylinder large connecting rod is movably connected to the rack through a hinge, and the other end of the cylinder large connecting rod is connected with the cutter cylinder in a power mode. The cutter cylinder transmits power through the cylinder large connecting rod and changes the driving direction of the power.

Furthermore, the middle part of the large cylinder connecting rod is connected with a small cutter connecting rod through a hinge, one end of the small cutter connecting rod is movably connected with the middle part of the large cylinder connecting rod, and the other end of the small cutter connecting rod is connected with a cutter lever through a hinge. The cutter small connecting rod is used for changing the direction and the size in the transmission.

Furthermore, the middle part of the cutter lever is movably connected to the rack through a hinge, one end of the cutter lever is hinged to the cutter small connecting rod, and the other end of the cutter lever is in power connection with the needle rod mechanism.

Furthermore, two parallel cams are arranged on the rotating shaft; a take-up lever is arranged between the two cams, one end of the take-up lever is fixed on the rack, and a threading hole is formed in the tail end of the take-up lever. During the rotation of the cam, the radius of the cam is changed continuously, and the sewing thread is tightened or loosened differently.

Further, slip table mechanism includes X axle motion and Y axle motion, X axle motion sets up on Y axle motion, Y axle motion sets up on the workstation.

Furthermore, the Y-axis movement mechanism comprises a Y-axis movement fixing shaft and a Y-axis movable platform, the Y-axis movable platform is arranged on the Y-axis movement fixing shaft, and two ends of the Y-axis movement fixing shaft are arranged on the workbench.

Furthermore, a Y-axis motor is arranged on the workbench, and a rotating shaft of the Y-axis motor is provided with a Y-axis motion gear; and a Y-axis moving rack is arranged on the Y-axis movable platform and is meshed with the Y-axis moving gear.

Furthermore, the X-axis movement mechanism comprises an X-axis movement shaft and an X-axis movable platform, and the X-axis movement shaft is fixedly connected with the X-axis movable platform; the Y-axis movable platform is provided with a linear bearing, and the X-axis movable platform is sleeved in the linear bearing; the X-axis movable platform is movably connected with the Y-axis movable platform through an X-axis moving shaft pin; an X-axis motor is arranged on the Y-axis movable platform, an X-axis moving gear is arranged on a rotating shaft of the X-axis motor, an X-axis moving rack is arranged on the X-axis movable platform, and the X-axis moving rack is meshed with the X-axis moving gear.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the movement is realized by arranging a single cutter cylinder, so that the structure of the equipment driving mechanism is greatly simplified, the stability of the equipment is improved, and the maintenance cost of the equipment can be reduced;

2. through setting up take-up mechanism, tighten up the wire rod automatically, relax the wire rod when the needle is pricked at every turn, improve and prick the effect, tighten up the wire rod when the narrowing, improve the quality of sewing every turn, guarantee the stability of sewing.

Drawings

FIG. 1 is a schematic view of the cutter mechanism of the eyelet buttonhole maker of the present invention;

FIG. 2 is a schematic view of the unfolding structure of the cutter mechanism of the eyelet buttonhole sewing machine according to the present invention;

FIG. 3 is a schematic view of the construction of the cutter lever of the present invention;

FIG. 4 is a schematic view of the construction of a cutter bar according to the present invention;

FIG. 5 is a schematic view of the construction of the cylinder big connecting rod of the present invention;

FIG. 6 is a schematic view of the construction of the cutter cylinder of the present invention;

FIG. 7 is a schematic structural view of the thread take-up mechanism of the present invention;

FIG. 8 is a schematic side view of the thread take-up mechanism of the present invention;

FIG. 9 is a schematic view of the construction of the cam of the present invention;

FIG. 10 is a schematic view showing the structure of the thread take-up lever according to the present invention;

fig. 11 is a schematic structural view of the slide table mechanism of the present invention;

the labels in the figure are: the machine tool comprises a machine frame 1, a workbench 2, a sliding table mechanism 3, a needle rod mechanism 4, a cutter cylinder 5, a cylinder large connecting rod 6, a cutter small connecting rod 7, a cutter lever 8, a machine head 9, a rotating shaft 10, a cam 11, a thread take-up rod 12, an X-axis moving shaft 13, a linear bearing 14, an X-axis moving rack 15, an X-axis motor 16, an X-axis moving gear 17, a Y-axis moving fixed shaft 18, an X-axis moving shaft pin 19, a Y-axis motor 20, a Y-axis moving gear 21 and a Y-axis moving rack 22.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1:

as shown in fig. 1-6, the invention discloses a round head buttonhole sewing machine, which comprises a frame 1, wherein a workbench 2 is arranged on the frame 1, and a sliding table mechanism 3 is arranged on the workbench 2; the machine frame 1 comprises a machine head 9, a needle bar mechanism 4 is arranged on the machine head 9, and the needle bar mechanism 4 is arranged right above the workbench 2; the cutting knife mechanism is characterized in that a cutting knife mechanism used for driving the needle bar mechanism 4 to move is arranged inside the rack 1 and comprises a cutting knife cylinder 5, and the cutting knife cylinder 5 is in power connection with the needle bar mechanism 4 through a plurality of driving rods. The traditional equipment realizes the motion of the eyelet buttonhole machine by arranging a plurality of cylinders, and has low efficiency, complex structure and poor stability and reliability. Through setting up single cylinder drive, can simplify the structure of equipment, improve the stability and the reliability of equipment.

The utility model discloses a cutter, including cutter cylinder 5, hinge and frame 1, the bottom swing joint of cutter cylinder 5 one end through hinge and frame 1, the expansion end of cutter cylinder 5 has cylinder large connecting rod 6 through hinged joint, the one end of cylinder large connecting rod 6 passes through hinge swing joint in frame 1, the other end of cylinder large connecting rod 6 links to each other with cutter cylinder 5 power.

The middle part of the large cylinder connecting rod 6 is connected with a small cutter connecting rod 7 through a hinge, one end of the small cutter connecting rod 7 is movably connected with the middle part of the large cylinder connecting rod 6, and the other end of the small cutter connecting rod 7 is connected with a cutter lever 8 through a hinge.

The middle part of the cutter lever 8 is movably connected to the rack 1 through a hinge, one end of the cutter lever 8 is hinged to the cutter small connecting rod 7, and the other end of the cutter lever 8 is in power connection with the needle rod mechanism 4. The cutter cylinder transmits power through the cylinder large connecting rod 6, the cutter small connecting rod 7 and the cutter lever 8, and changes the driving direction of the power.

In the specific operation process, when the cutter cylinder 5 is in the contracted state, the needle bar mechanism 4 is at the highest position, as shown in fig. 1. After the cutter cylinder 5 is connected with a high-pressure air source, the cutter cylinder 5 extends, the tail end of the cutter cylinder 5 pushes one end of the cylinder large connecting rod 6 to move upwards, and the cylinder large connecting rod 6 rotates around the other end point. Meanwhile, the middle part of the large connecting rod 6 of the air cylinder pushes the small connecting rod 7 of the cutter to move, and the small connecting rod 7 of the cutter pushes one end of the cutter lever 8 to move upwards.

The cutter lever 8 rotates about its middle portion, and when one end moves upward, the other end moves downward and pushes the needle bar mechanism 4 downward.

The working state of the cutter cylinder 5 is switched, and the cutter cylinder 5 contracts. The end of the cutter cylinder 5 pulls one end of the cylinder big connecting rod 6 to move downwards, and the cylinder big connecting rod 6 rotates around the other end point. Meanwhile, the middle part of the large connecting rod 6 of the cylinder pulls the small connecting rod 7 of the cutter to move, and the small connecting rod 7 of the cutter pulls one end of the cutter lever 8 to move downwards. The cutter lever 8 rotates about its middle portion, and when one end moves downward, the other end moves upward and pushes the needle bar mechanism 4 upward.

Therefore, the needle bar mechanism 4 can move up and down in a reciprocating manner, and the movement is realized by arranging a single cutter cylinder, so that the structure of the driving mechanism of the equipment is greatly simplified, the stability of the equipment is improved, and the maintenance cost of the equipment can be reduced.

Example 2:

as shown in fig. 7-10, the present invention discloses a preferred embodiment of a eyelet buttonhole machine.

A thread take-up mechanism for tightening and loosening sewing threads is arranged on the frame 1; the thread take-up mechanism comprises a rotating shaft 10, and the rotating shaft 10 is in synchronous power connection with the needle bar mechanism 4. Two parallel cams 11 are arranged on the rotating shaft 10; a thread take-up lever 12 is arranged between the two cams 11, one end of the thread take-up lever 12 is fixed on the rack 1, and a threading hole is formed at the tail end of the thread take-up lever 12. During the rotation of the cam, the radius of the cam is changed continuously, and the sewing thread is tightened or loosened differently. The sewing thread passes around the two cams 11 and passes through a threading hole at the end of the thread take-up lever 12. When the needle is pulled out, the sewing thread is tightened to tighten the stitch, so that the sewing effect is ensured.

In the specific operation process, the rotating shaft 10 and the needle bar mechanism 4 move synchronously through a transmission mechanism, and the transmission mechanism adopts a crankshaft connecting rod mechanism. The needle bar mechanism 4 does not move up and down once and the cam 11 rotates one revolution.

When the needle bar mechanism 4 moves downwards, the cam 11 mechanism is gradually turned to the position of minimum radius, at which the sewing thread is loosened, facilitating the needle bar mechanism 4 to insert the sewing thread into the cloth. When the needle bar mechanism 4 moves upwards, the cam 11 mechanism gradually turns to the position with the largest radius, and the sewing thread is tensioned, so that the thread inserted into the cloth is tensioned, and the stitch tightness is realized.

Like this, through setting up take-up mechanism, carry out automatic tightening up to the wire rod, relax the wire rod when the needle is pricked at every turn, improve and prick the effect, tighten up the wire rod when the narrowing, improve the quality of sewing every turn, guarantee the stability of sewing.

Example 3:

as shown in fig. 11, the present invention discloses a preferred embodiment of a eyelet buttonhole machine.

The invention discloses a sliding table mechanism 3, wherein the sliding table mechanism 3 comprises an X-axis movement mechanism and a Y-axis movement mechanism, the X-axis movement mechanism is arranged on the Y-axis movement mechanism, and the Y-axis movement mechanism is arranged on a workbench 2.

The Y-axis movement mechanism comprises a Y-axis movement fixing shaft 18 and a Y-axis movable platform, the Y-axis movable platform is arranged on the Y-axis movement fixing shaft 18, and two ends of the Y-axis movement fixing shaft 18 are arranged on the workbench 2.

A Y-axis motor 20 is arranged on the workbench 2, and a Y-axis motion gear 21 is arranged on a rotating shaft of the Y-axis motor 20; and a Y-axis moving rack 22 is arranged on the Y-axis movable platform, and the Y-axis moving rack 22 is meshed with the Y-axis moving gear 21.

The X-axis movement mechanism comprises an X-axis movement shaft 13 and an X-axis movable platform, and the X-axis movement shaft 13 is fixedly connected with the X-axis movable platform; a linear bearing 14 is arranged on the Y-axis movable platform, and the X-axis movable platform 13 is sleeved in the linear bearing 14; the X-axis movable platform is movably connected with the Y-axis movable platform through an X-axis movable shaft pin 19; an X-axis motor 16 is arranged on the Y-axis movable platform, an X-axis moving gear 17 is arranged on a rotating shaft of the X-axis motor 16, an X-axis moving rack 15 is arranged on the X-axis movable platform, and the X-axis moving rack 15 is meshed with the X-axis moving gear 17.

In the specific operation process, the Y-axis motor 20 rotates, the Y-axis motor 20 drives the Y-axis moving gear 21 to rotate, and the Y-axis moving gear 21 drives the Y-axis moving rack 22 to move, so as to drive the whole platform to move along the Y direction. The X-axis motor 16 rotates, the X-axis motor 16 rotates to drive the X-axis moving gear 17 to rotate, the X-axis moving gear 17 rotates the X-axis moving rack 15 to move linearly, and the X-axis moving rack 15 moves to drive the whole platform to move along the X direction. Thus, the workbench is moved, and the cloth is driven to move in the preset direction.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.