CN113737407A

CN113737407A - Buttonhole sewing machine

Info

Publication number: CN113737407A
Application number: CN202111108886.8A
Authority: CN
Inventors: 王勇锋; 程恩思; 王圣; 蔡锦飚; 邵临武
Original assignee: Bullmer Electromechanical Technology Co Ltd
Current assignee: Bullmer Electromechanical Technology Co Ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2021-12-03
Anticipated expiration: 2041-09-22
Also published as: CN113737407B

Abstract

The invention belongs to the technical field of sewing equipment, in particular to a buttonholing machine; the cutter device comprises a casing, a cutter device and a cutter ejector rod, wherein the cutter device comprises a cutter motor, a cutter bar vertically penetrating through the casing and a cutter fixedly arranged at the lower end of the cutter bar, a rotating shaft of the cutter motor is connected with the cutter bar through a multi-link mechanism and drives the cutter bar to move up and down, the action of the cutter motor is controlled by a controller, a partition plate is arranged in an inner cavity of the casing, the partition plate divides the inner cavity of the casing into a cutter motor cavity and a spraying oil cavity which are mutually independent, and the cutter motor is arranged in the cutter motor cavity; the invention uses the built-in cutter motor as a power source, the multi-link mechanism drives the cutter to realize the cloth cutting action, the multi-link mechanism is directly driven by the motor, the structure is simple, the assembly, adjustment and maintenance are more convenient, the number of parts to be manufactured is greatly reduced to a certain extent, the manufacturing and purchasing costs are reduced, and especially the complexity of the shell processing technology is greatly reduced.

Description

Buttonhole sewing machine

The technical field is as follows:

the invention belongs to the technical field of sewing equipment, and particularly relates to a buttonholing machine.

Background art:

the buttonhole sewing machine is mainly used for processing buttonholes in various clothes, is divided into a straight buttonhole sewing machine (straight buttonhole sewing machine) and a round buttonhole sewing machine (eyelet buttonhole sewing machine), is divided into a ending part and a non-ending part, and is a special device which is very important in clothing machinery.

The buttonhole maker comprises a cutter mechanism, the existing cutter mechanism adopts a cam link mechanism, and the buttonhole maker has the following multiple possible reasons that the defect machine exists:

1. the cutter does not fall down: the position of a cutter clutch block is poor, the balance of a cutter stopping rod is poor, the position of a cutter action hook is poor, the tension of a tension spring of the cutter action hook is insufficient, the threading method of the upper thread is not correct, the stability of the cutter is affected by uneven sensitivity change of a steel wire after the suture of the fabric is replaced, and the jacking height is insufficient after the ejector rod is abraded;

2. the cutter falling sound is big: the cutter is not in the correct position when falling, the low-speed cam block is not in the right position, the speed change mechanism is poor, the cushion pad is fatigue-broken and impacts the shell, and the user experience is not strong;

3. the seam-opening cutter falls: the situation that the position of the cutter clutch block is too late, the tension spring of the cutter driving claw is broken, the gap between the upper part of the auxiliary block of the cutter driving claw and the lug at the lower part of the cutter action hook is large, the parking collision block does not completely enter the groove of the stop cam, and the cutter is used for starting the seam again after stopping in midway;

4. and (3) continuously cutting twice: the tension spring of the cutter driving claw is broken, the action of the cutter driving claw is poor, the torque is large, and the torsion spring of the auxiliary block of the cutter driving claw is too weak; 5. the upper thread breaking cutter still falls: stopping the cutter bar, stopping the installation of the steel wire of the cutter bad, the threading method is not right, and the eccentric stop dog of the cutter bar is adjusted too high.

Therefore, the existing mechanism has the disadvantages of complex action, high assembly and debugging difficulty, high processing and manufacturing difficulty of the shell and parts, high purchasing cost, high difficulty in after-sale maintenance and on-site problem solution, high customer complaint rate and the like.

The invention content is as follows:

the invention aims to provide a buttonholing machine which is simple and convenient to assemble, adjust and maintain, can realize no oiling and can continuously cut cloth.

The invention is realized by the following steps:

the utility model provides a buttonhole maker, includes casing, cutters, cutter ejector pin, cutters includes cutter motor, the cutter arbor of vertical wear to establish on the casing, sets firmly the cutter at the cutter arbor lower extreme, the pivot of cutter motor is connected and drives the cutter arbor up-and-down motion through many link mechanism and cutter arbor, the action of cutter motor is controlled by the controller, the casing inner chamber is provided with the division board, the division board falls into mutually independent cutter motor chamber and drenches the oil pocket with the casing inner chamber, the cutter motor is arranged in cutter motor intracavity.

In foretell buttonhole maker, many link mechanism includes the crank, the crank passes through the connecting rod to be connected with the one end of swing arm, the middle part of swing arm articulates on the casing, just the other end of swing arm passes through the cutter connecting rod to be connected with the cutter arbor locating rack, and the cutter arbor locating rack sets firmly on the cutter arbor.

In an above-mentioned buttonhole maker, the connecting rod is the splayed connecting rod, the one end of swing arm is provided with the bar hole, the one end and the crank of splayed connecting rod are connected, and the other end passes through the pin and is connected with the swing arm, the pin can remove along the bar hole.

In the buttonholing machine, the cutter motor cavity is connected with the machine shell in a sealing mode through the first upper cover and the sealing ring, the oil spraying cavity is connected with the machine shell in a sealing mode through the second upper cover and the sealing ring, and the first upper cover and the second upper cover are of two-section split structures.

In foretell buttonhole maker, be provided with the open slot on the lateral wall of casing, the swing arm is located the outside of casing, and the middle part of swing arm rotates to be installed on the lateral wall of aircraft nose.

In foretell buttonhole maker, be provided with the guide way along upper and lower direction on the casing, the cutter arbor locating rack runs through the guide way setting, just the cutter arbor locating rack can reciprocate along the guide way.

In the buttonholing machine, the swing arm is in a V shape, and the corners of the swing arm are rotatably installed on the machine shell through shaft position screws.

In the buttonholing machine, the cutter motor is fixedly arranged in the cutter motor cavity of the casing through the motor mounting seat, a motor rotating shaft mounting hole is formed in the motor mounting seat, and a bearing is arranged between the motor rotating shaft mounting hole and the rotating shaft.

In the buttonholing machine, an inductor is arranged above the cutter ejector rod and connected with a controller, and the controller controls the action of the cutter motor according to signals input by the inductor.

In the buttonholing machine, a square groove is arranged at the front end of the casing, the cross section of the cutter bar is matched with the square groove, and the cutter bar reciprocates up and down in the square groove

Compared with the prior art, the invention has the outstanding advantages that:

1. the invention uses the built-in cutter motor as a power source, the multi-link mechanism drives the cutter to realize the cloth cutting action, the multi-link mechanism is directly driven by the motor, the structure is simple, the assembly, adjustment and maintenance are more convenient, the number of parts to be manufactured is greatly reduced to a certain extent, the manufacturing and purchasing costs are reduced, and especially the complexity of the shell processing technology is greatly reduced.

2. The action of the cutter motor of the invention realizes the editing operation of multiple modes through electrical control, the continuous multiple cutter actions are realized, the problem of the current single and rigid cutter action is solved, the function of opening eyes is realized without replacing a blade, and the invention has quite strong editability and can provide multiple possibilities for the subsequent development.

3. The invention can replace the existing cam link mechanism, and can avoid the defects of no falling of the cutter, loud cutter falling sound, cutter falling in the beginning of sewing, continuous cutter falling, cutter falling still when the upper thread is broken, clamping after cutter falling and the like.

4. When the swing arm of the invention is used for cutting under the cutter, the mechanism moves and then becomes the situation of a labor-saving lever, so that the thickness cutting performance of the cutter can be effectively ensured and improved; in addition, the part structure of the cutter holder fixing frame is redesigned, so that a cutter can cut a 6mm thick material, and the cutting thickness of the cutter holder fixing frame is doubled compared with that of the existing mechanism.

Description of the drawings:

FIG. 1 is one of the perspective views of the present invention;

FIG. 2 is one of the schematic views of the cutter motor of the present invention connected to the cutter unit by a multi-link mechanism;

FIG. 3 is a second schematic view of the cutter motor of the present invention connected to the cutter unit by a multi-link mechanism;

FIG. 4 is a schematic view of the enclosure of the present invention;

FIG. 5 is a schematic view of a swing link of the present invention;

fig. 6 is a second perspective view of the present invention.

In the figure: 1. a housing; 2. a cutter ejector rod; 3. a cutter motor; 4. a cutter bar; 5. a cutter; 6. a tool apron fixing frame; 7. a cutter mounting seat; 8. an inductor; 9. a partition plate; 10. a cutter motor cavity; 11. an oil spraying cavity; 12. a crank; 13. a connecting rod; 14. swinging arms; 15. a cutter connecting rod; 16. a cutter bar positioning frame; 17. a strip-shaped hole; 18. a pin; 19. a guide groove; 20. a bearing; 21. a first upper cover; 22. and a second upper cover.

The specific implementation mode is as follows:

the invention will now be further described by way of specific examples, with reference to figures 1 to 6:

a buttonhole maker comprises a shell 1, a cutter device and a cutter ejector rod 2, wherein the cutter ejector rod 2 is an existing part of the buttonhole maker, and the specific installation position of the cutter ejector rod is not described in detail in the invention. The cutter device comprises a cutter motor 3, a cutter bar 4 vertically arranged on the machine shell 1 in a penetrating way, and a cutter 5 fixedly arranged at the lower end of the cutter bar 4. The lower extreme of cutter arbor 4 has set firmly blade holder mount 6, is provided with cutter mount pad 7 in the bottom surface of blade holder mount 6, cutter mount pad 7 is provided with the cutter mounting groove along vertical direction, be provided with the regulation hole along upper and lower direction on the cutter 5, the regulation hole is the bar, and cutter 5 passes the regulation hole through the screw and sets firmly on cutter mount pad 7, the upper and lower position of cutter 5 on cutter mount pad 7 is adjustable. Similarly, the front and back positions of the cutter mounting seat 7 on the cutter seat fixing frame 6 can be adjusted, so that the front and back positions of the cutter 5 can be adjusted. In the present invention, the cutter motor 3 is a stepping motor. The stepping motor is used as a power source, the action under different requirement working conditions can be realized by means of the function of electrical programming, and the stepping motor has quite strong editability and can provide multiple possibilities for subsequent development. The rotating shaft of the cutter motor 3 is connected with the cutter bar 4 through a multi-link mechanism and drives the cutter bar 4 to move up and down, and the action of the cutter motor 3 is controlled by the controller. Signals of the cutter motor 3 can be provided by the action and the coordination of the spindle motor, and in addition, signals are set by a broken wire induction copper sheet at the second wire clamping device in a program and fed back to the action of the cutter motor, so that the interlocking control is realized, and the characteristics of quite strong controllability and programmability are realized. In this embodiment, an inductor 8 (e.g. a photoelectric switch) is disposed above the cutter ejector rod 2, the inductor 8 is connected with a controller, and the controller controls the action of the cutter motor 3 according to a signal input by the inductor 8. The inner cavity of the machine shell 1 is provided with a partition plate 9, and the partition plate 9 and the machine shell 1 are formed by integral casting. The inner cavity of the machine shell 1 is divided into a cutter motor cavity 10 and a spraying oil cavity 11 which are mutually independent by the partition plate 9, and the cutter motor 3 is arranged in the cutter motor cavity 10. The cutter motor 3 and the oil spraying cavity 11 are arranged in a separated mode, so that the electrical property of the cutter motor 3 is not interfered by an oil environment; the oil spraying at the tail end can be prevented from flowing back to the front end of the machine head, so that the front end is ensured to be in a low-oil environment, and the front end of the machine head is continuously provided with the existing oil seepage type oil supply system, so that the lubrication states of the thread take-up mechanism, the needle swinging mechanism, the pressure lifting mechanism and the like are ensured.

The invention directly utilizes the motor to drive, and the driving mode provides certain feasibility for the universality of the blade of which the front end executes the cloth cutting action, and the whole structure is simple and compact, and is convenient to assemble, adjust and maintain. The cutter motor 3 can realize continuous and repeated cutter actions through electric control setting, solves the problem of the current single dead plate cutter action, and also realizes the function of opening the eyes without replacing the blade. In addition, the multi-link mechanism is adopted to replace the existing cam link mechanism, so that various situations such as no falling of the cutter, loud cutter falling sound, cutter falling during initial sewing, continuous cutter falling, cutter falling after facial line breaking, cutter clamping after cutter falling and the like can be avoided.

In order to realize the complete isolation of the cutter motor cavity 10 and the oil spraying cavity 11, the invention uses a two-section type upper cover and a sealing washer to separate the cutter motor cavity 10 from the oil spraying cavity 11 at the tail part, specifically, the cutter motor cavity 10 is hermetically connected with the machine shell 1 through a first upper cover 21 and the sealing washer, and the oil spraying cavity 11 is hermetically connected with the machine shell through a second upper cover 22 and the sealing washer.

As shown in fig. 2, the multi-link mechanism of the present invention includes a crank 12, the crank 12 is connected with one end of a swing arm 14 through a connecting rod 13, the middle part of the swing arm 14 is hinged on the housing 1, the other end of the swing arm 14 is connected with a knife bar positioning frame 16 through a cutter connecting rod 15, and the knife bar positioning frame 16 is fixedly arranged on the knife bar 4. The swing arm 14 is in a V shape, and the corners of the swing arm are rotatably mounted on the machine shell 1 through shaft position screws. The V-arrangement structure of swing arm 14, when cutter 5 undercut, the mechanism has moved the situation that the back evolution becomes laborsaving lever, guarantees effectively and can promote cutter 5's thick performance of cutting, combines blade holder mount 6, can guarantee that cutter 5 can cut 6mm thick material, compares current mechanism and cuts thick performance and promote doubly.

Further, a strip-shaped hole 17 is formed in one end of the swing arm 14, the connecting rod 13 is a splayed connecting rod, one end of the splayed connecting rod is rotatably connected with the crank 12, the other end of the splayed connecting rod is connected with the swing arm 14 through a pin 18, and the pin 18 can move along the strip-shaped hole 17. The splayed connecting rod can realize the action of two degrees of freedom, and the structure is simplified.

As shown in fig. 1, an open slot is provided on a side wall of the casing 1, the swing arm 14 is located outside the casing 1, and a middle portion of the swing arm 14 is rotatably mounted on an outer side wall of the casing 1. Correspondingly, the cutter link 15 is also located on the outer side wall of the housing 1. The machine shell 1 is provided with a guide groove 19 along the up-down direction, the cutter bar positioning frame 16 penetrates through the guide groove 19, the cutter bar positioning frame 16 moves up and down in the guide groove 19 when the cutter bar 4 moves up and down, and the rotation of the cutter bar 4 can be limited.

The cutter motor 3 is fixedly arranged in a cutter motor cavity 10 of the machine shell 1 through a motor mounting seat, a motor rotating shaft mounting hole is formed in the motor mounting seat, a bearing 20 is arranged between the motor rotating shaft mounting hole and the rotating shaft, and the bearing 20 is a rolling bearing and has the function of assisting in supporting radial force.

The structure of the cutter motor 3 driving cutter device greatly reduces the number of parts to be manufactured, the manufacturing cost and the purchasing cost to a certain extent, and particularly greatly reduces the complexity of the processing technology of the shell 1.

The cutter motor 3 of the invention occupies the space of the existing cutter driving rod assembly and the reel after being internally arranged, moves the reel to the right side surface of the machine shell 1 and continues to use the existing oil spraying system. The winder component is moved towards the rear end, the existing oil supply box component and the existing gear pump component are directly cancelled, and a lower shaft front end shaft sleeve can be designed into a plunger pump, so that the situations that the thread is broken due to scalding and the like caused by the unstable oil supply amount of the conventional rotating shuttle can be improved, in addition, the oil amount can be shunted to the upper shaft, the oil supply of the turbine worm component and the oil dripping or oil seepage lubrication of the swing difference component are ensured, and the cost reduction can also be realized; the overall appearance of the whole machine is still the traditional appearance in the heart of a client, and the front half part of the upper section is better, plump and more beautiful than the original one only after the built-in motor is installed; and the front-section thread-taking-up mechanism, the lifting and pressing mechanism and the needle swinging mechanism can also realize oil-free and can be replaced by grease lubrication.

As another embodiment of the cutter bar 4 mounting structure of the invention, under the condition that the design space of the front end part of the machine shell 1 allows, the cutter bar 4 is designed into a strip flat shape and is embedded in the square groove at the front end of the machine shell, and the positioning and sliding precision is basically controlled by one-time processing of the square groove of the machine shell 1 and the assembling process of the upper section and the lower section; therefore, the mechanism can be simplified, related parts such as a steel sleeve, a guide block, a sliding groove and the like are omitted, and cost reduction can be realized.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a buttonhole maker, includes casing (1), cutters, cutter ejector pin (2), its characterized in that: the cutter device comprises a cutter motor (3), a cutter bar (4) vertically penetrating through a casing (1) and a cutter (5) fixedly arranged at the lower end of the cutter bar (4), a rotating shaft of the cutter motor (3) is connected with the cutter bar (4) through a multi-link mechanism and drives the cutter bar (4) to move up and down, the action of the cutter motor (3) is controlled by a controller, a partition plate (9) is arranged in the inner cavity of the casing (1), the partition plate (9) divides the inner cavity of the casing (1) into a cutter motor cavity (10) and a drenching oil cavity (11) which are mutually independent, and the cutter motor (3) is arranged in the cutter motor cavity (10).

2. A buttonholing machine according to claim 1, characterized in that: many link mechanism includes crank (12), crank (12) are connected with the one end of swing arm (14) through connecting rod (13), the middle part of swing arm (14) articulates on casing (1), just the other end of swing arm (14) is connected with cutter arbor locating rack (16) through cutter connecting rod (15), and cutter arbor locating rack (16) set firmly on cutter arbor (4).

3. A buttonholing machine according to claim 2, characterized in that: the connecting rod is the splayed connecting rod, the one end of swing arm (14) is provided with bar hole (17), and the one end and the crank (12) of splayed connecting rod are connected, and the other end passes through pin (18) and is connected with swing arm (14), pin (18) can move along bar hole (17).

4. A buttonholing machine according to claim 1, 2 or 3, characterized in that: the cutter motor cavity (10) is in sealing connection with the machine shell (1) through the first upper cover (21) and the sealing ring, the oil spraying cavity (11) is in sealing connection with the machine shell (1) through the second upper cover (22) and the sealing ring, and the first upper cover (21) and the second upper cover (22) are of two-section type split structures.

5. A buttonholing machine according to claim 2 or 3, characterized in that: the improved motor cabinet is characterized in that an open slot is formed in the side wall of the cabinet (1), the swing arm (14) is located on the outer side of the cabinet (1), and the middle of the swing arm (14) is rotatably installed on the outer side wall of the cabinet (1).

6. A buttonholing machine according to claim 5, characterized in that: the cutter bar positioning device is characterized in that a guide groove (19) is formed in the upper edge of the machine shell (1) in the up-down direction, the cutter bar positioning frame (16) penetrates through the guide groove (19) and is arranged, and the cutter bar positioning frame (16) can move up and down along the guide groove (19).

7. A buttonholing machine according to claim 2 or 3, characterized in that: the swing arm (14) is V-shaped, and the corners of the swing arm are rotatably installed on the machine shell (1) through shaft position screws.

8. A buttonholing machine according to claim 1, characterized in that: the cutter motor (3) is fixedly arranged in a cutter motor cavity (10) of the machine shell (1) through a motor mounting seat, a motor rotating shaft mounting hole is formed in the motor mounting seat, and a bearing (20) is arranged between the motor rotating shaft mounting hole and the rotating shaft.

9. A buttonholing machine according to claim 1, characterized in that: an inductor (8) is arranged above the cutter ejector rod (2), the inductor (8) is connected with a controller, and the controller controls the action of the cutter motor (3) according to signals input by the inductor (8).

10. A buttonholing machine according to claim 1, characterized in that: the front end of the machine shell (1) is provided with a square groove, the cross section shape of the cutter bar (4) is matched with the square groove, and the cutter bar (4) reciprocates up and down in the square groove.