CN211339951U

CN211339951U - Pattern curve transmission mechanism of sewing machine

Info

Publication number: CN211339951U
Application number: CN201921347599.0U
Authority: CN
Inventors: 朱广运; 朱龙明; 卢委丽; 王健
Original assignee: Zhejiang Longtai Sewing Equipment Co ltd
Current assignee: Zhejiang Longtai Sewing Equipment Co ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-08-25
Anticipated expiration: 2029-08-19

Abstract

The utility model relates to a sewing machine field discloses a sewing machine style curve drive mechanism. Including casing, main shaft, locate style mould cam subassembly and the depended wheel pole of casing front side, style mould cam subassembly includes pivot, first gear and cam, the pivot constitutes with the casing and rotates and be connected, the cam sets firmly in the front end of pivot, the periphery of cam is the zigzag, first gear sets firmly in the rear end of pivot, the second gear has set firmly on the main shaft, first gear constitutes the transmission cooperation with the second gear, depended wheel pole overlap joint is at the lateral wall of cam, the rear end of depended wheel pole is equipped with the transfer line admittedly. The utility model discloses transmission simple structure has higher style curve and makes up efficiency.

Description

Pattern curve transmission mechanism of sewing machine

Technical Field

The utility model belongs to the technical field of the sewing machine technique and specifically relates to a sewing machine style curve drive mechanism is related to.

Background

At present, electronic pattern sewing equipment becomes a highly specialized machine type with high technology content, more than four thousand types exist in the world according to relevant statistics, and meanwhile, a large number of sewing machine accessories are proposed by various countries in competition, so that the application range of the sewing machine is enlarged, the sewing quality is improved, and the labor intensity of workers is greatly reduced. At present, the sewing machine for family use that circulates in the market, its structural component mainly includes: the appearance plastic covering part and the iron or aluminum casing wrapped in the covering part are an internal action mechanism which is mainly composed of a stitch forming mechanism and the like which are composed of a crank connecting rod jumper wire, a vertical shuttle hook, an adjustable lower cloth feeding device and a built-in thread clamping device. Chinese patent publication No. CN201952608 discloses a curve sewing machine, including sewing machine body, rotation set up in the connecting rod of sewing machine body one side and fixed set up in the needle of connecting rod one end, the body on be located the path direction of the needle still fixed be provided with needle assorted needle groove, still rotate on the sewing machine body be connected with the path direction consistent of the needle when stroking the line portion with the line, the needle is located the recess in. The sewing machine has a complex structure in the process of sewing pattern curves, and the sewing efficiency of the pattern curves is low.

Disclosure of Invention

The utility model relates to an overcome prior art problem, provide a sewing machine style curve drive mechanism, this drive mechanism simple structure can promote the curved efficiency of making up of sewing machine style by a wide margin.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a sewing machine style curve drive mechanism, includes casing, main shaft, locates style mould cam subassembly and the depended wheel pole of casing front side, style mould cam subassembly includes pivot, first gear and cam, the pivot constitutes with the casing and rotates and be connected, the cam sets firmly in the front end of pivot, the periphery of cam is the dogleg shape, first gear sets firmly in the rear end of pivot, the second gear has set firmly on the main shaft, first gear constitutes the transmission cooperation with the second gear, depended wheel pole overlap joint is at the lateral wall of cam, the rear end that leans on the wheel pole is equipped with the transfer line admittedly.

The utility model discloses a rotation of main shaft drives the epaxial second gear revolve of main shaft, and second gear revolve rotates and drives first gear revolve, and first gear revolve drives the pivot rotation, and the rotatory cam that drives the pivot front end of pivot is rotatory, takes the depended wheel pole that leans on at the cam lateral wall along with the peripheral orbit motion of cam, leans on the motion of wheel pole to stir the transfer line motion, and the up-and-down motion of transfer line makes its driven syringe needle motion, the utility model discloses transmission simple structure, it is efficient that the style curve is made up.

Preferably, the transmission rod comprises a connecting rod, a connecting shaft pin and a swing rod; one end of the connecting rod is fixedly connected with the rear end of the idler wheel rod, and the other end of the connecting rod is fixedly connected with the front end of the connecting shaft pin; the rear end of the connecting shaft pin is fixedly connected with the swing rod.

Preferably, the swing rod comprises a shifting fork rod and a driving rod, the right end of the driving rod is fixedly connected with the rear end of the connecting shaft pin, and the left end of the driving rod is in sliding fit with the right end of the shifting fork rod.

Preferably, the right end of the shifting fork rod is provided with a U-shaped notch, the left end of the driving rod is provided with a contact block, and the contact block is arranged in the U-shaped notch and forms sliding fit with the right end of the shifting fork rod.

Preferably, the upper side and the lower side in the U-shaped notch are respectively provided with a clamping block for clamping the contact block, and the side wall of the contact block, which is contacted with the clamping block, is arc-shaped.

Through setting up the lateral wall of touch multitouch into arc, reduce the resistance between lug outer wall and the grip block, make things convenient for the sliding fit between actuating lever and the declutch shift lever, reduce mechanical wear between the part.

Preferably, the fork lever and the housing form a rotational connection.

Preferably, the wheel lever has a cylindrical shape.

The wheel leaning rod is cylindrical, and the friction between the circular arc outer wall of the wheel leaning rod and the cam can be reduced after the circular arc outer wall of the wheel leaning rod is contacted with the cam.

Therefore, the utility model discloses following beneficial effect has: the utility model discloses a rotation of main shaft drives the epaxial second gear revolve of main shaft, and second gear revolve rotates and drives first gear revolve, and first gear revolve drives the pivot rotation, and the pivot is rotatory to drive the cam of pivot front end, takes the depended wheel pole of leaning on at the cam lateral wall along with the peripheral orbit motion of cam, leans on the motion of wheel pole to stir the transfer line motion, and the up-and-down motion of transfer line makes its driven syringe needle motion, and transmission simple structure, style curve make efficiency higher.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view structure diagram of the present invention.

Reference numerals

The pattern die cam assembly comprises a shell 1, a main shaft 2, a pattern die cam assembly 3, a cam lever 4, a rotating shaft 31, a first gear 32, a cam 33, a transmission rod 5, a connecting rod 51, a connecting shaft pin 52, a swinging rod 53, a shifting fork rod 531, a driving rod 532, a U-shaped notch 533, a contact block 534 and a clamping block 535.

Detailed Description

The technical solution of the present invention is further explained by the following specific embodiments.

Example 1

As shown in fig. 1 and 2, the structure schematic diagram and the front view schematic diagram of the present invention are respectively a pattern cam assembly 3 and a cylindrical idler wheel rod 4, the pattern cam assembly includes a rotating shaft 31, a first gear 32 and a cam 33, the rotating shaft and the housing are rotatably connected, the cam is fixedly disposed at the front end of the rotating shaft, the periphery of the cam is in a zigzag shape, the first gear is fixedly disposed at the rear end of the rotating shaft, the main shaft is fixedly provided with a second gear, the first gear is in transmission fit with the second gear, the idler wheel rod is lapped on the side wall of the cam, the rear end of the idler wheel rod is fixedly provided with a transmission rod 5, and the transmission rod includes a connection rod 51, a connection shaft pin 52 and a swing rod 53; the pendulum rod includes declutch shift 531 and actuating lever 532, and the declutch shift constitutes to rotate with the casing and is connected, the one end of connecting rod and the rear end fixed connection of depended wheel pole, the other end and the front end fixed connection of connecting pin, the right-hand member of actuating lever and the rear end fixed connection of connecting pin, U-shaped breach 533 has been seted up to the declutch shift right-hand member, the intraoral upper and lower both sides of U-shaped breach respectively are equipped with the grip block 535 of a centre gripping feeler, the left end of actuating lever is equipped with feeler block 534, the lateral wall that contacts with the grip block on the feeler block is convex, the feeler block locate in the U-shaped breach and constitute sliding fit with the dec.

The working principle is as follows: the rotation through the main shaft drives the second gear on the main shaft to rotate, the second gear rotates and drives the first gear to rotate, the first gear rotates and drives the rotating shaft to rotate, the rotating shaft rotates and drives the cam at the front end of the rotating shaft to rotate, the cam rod leaning on the side wall of the cam moves along with the track of the periphery of the cam, the motion of the cam rod drives the motion of the connecting rod, the motion of the connecting rod drives the motion of the connecting shaft pin, the motion of the connecting shaft pin drives the motion of the driving rod, the contact block at the left end of the driving rod slides in the U-shaped notch at the right end of the shifting fork rod, thereby shifting the shifting fork rod to move up and down.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent changes without departing from the technical scope of the present invention.

Claims

1. The utility model provides a sewing machine style curve drive mechanism, its characterized in that includes casing (1), main shaft (2), locates style mould cam subassembly (3) of casing front side and leans on wheel pole (4), style mould cam subassembly includes pivot (31), first gear (32) and cam (33), the pivot constitutes with the casing and rotates to be connected, the cam sets firmly in the front end of pivot, the periphery of cam is the dogleg shape, first gear sets firmly in the rear end of pivot, the second gear has set firmly on the main shaft, first gear and second gear transmission cooperation, lean on the lateral wall of wheel pole overlap joint at the cam, the rear end that leans on the wheel pole is equipped with transfer line (5) admittedly.

2. The pattern curve transmission mechanism of the sewing machine as claimed in claim 1, wherein the transmission rod comprises a connecting rod (51), a connecting shaft pin (52) and a swing rod (53); one end of the connecting rod is fixedly connected with the rear end of the idler wheel rod, and the other end of the connecting rod is fixedly connected with the front end of the connecting shaft pin; the rear end of the connecting shaft pin is fixedly connected with the swing rod.

3. The pattern curve transmission mechanism of the sewing machine as claimed in claim 2, wherein the swing link comprises a shifting fork lever (531) and a driving lever (532), the right end of the driving lever is fixedly connected with the rear end of the connecting shaft pin, and the left end of the driving lever is in sliding fit with the right end of the shifting fork lever.

4. The pattern curve transmission mechanism of sewing machine as claimed in claim 3, wherein the right end of the fork lever is provided with a U-shaped notch (533), the left end of the driving lever is provided with a contact block (534), and the contact block is arranged in the U-shaped notch and forms a sliding fit with the right end of the fork lever.

5. The pattern curve transmission mechanism of sewing machine according to claim 4, wherein a clamping block (535) for clamping the contact block is provided at each of upper and lower sides in the U-shaped notch, and a side wall of the contact block contacting with the clamping block is arc-shaped.

6. A sewing machine pattern curve transmission as claimed in claim 3, wherein the fork lever is rotatably connected to the housing.

7. A sewing machine pattern curve transmission as claimed in claim 1, wherein the wheel lever is cylindrical.