CN201031301Y - Improved structure of rolling feeding for sewing machine - Google Patents

Abstract

The utility model provides a sewing machine's roll extrusion pay-off improvement structure, sewing machine have a seam needle portion and be located the pay-off subassembly of faller seat, and seam needle portion rear side is located to the presser foot, and the pay-off structure contains: the roller frame is combined with a power transmission assembly, one end of the roller frame is connected with the transmission mechanism, the other end of the roller frame is obliquely extended and connected with a feeding roller, and the feeding roller is close to the rear edge of the presser foot; the fixing frame is fixedly arranged at the rear side of the sewing machine and is combined with the regulating mechanism of the fixing frame; the power unit is connected with one end of the roller frame through a transmission mechanism; the regulating mechanism is combined with the fixed frame and at least comprises a poking control handle, and the poking control handle rotates to control the feeding roller to lift or press down; the needle plate seat is provided with at least one rolling component corresponding to one end face of the feeding roller. Through the structural characteristics, the working material piece can be smoothly rolled and fed, and the sewing efficiency and the sewing quality of the working material piece are improved.

Description

Improved Structure of Rolling Feed for Sewing Machine

technical field

The utility model relates to an improved rolling feeding structure of a sewing machine, especially an adjustable feeding roller relatively close to or away from the presser foot, so as to cooperate with the sewing needle part and the needle plate seat to achieve smooth rolling feeding, and then improve its sewing. Sewing machine feeding structure for high efficiency and sewing quality of work pieces.

Background technique

It is known that the currently used sewing machines, in order to improve the force of pushing the cloth of the sewing machine to reduce the wrinkling of the suture, or to smoothly push and sew when it is applied to thick cloth sewing, are all set by setting a button behind the presser foot. Pulling rollers, or set up on the table top of the sewing machine with a bottom plate set, in order to respond to the different thicknesses of the objects to be sewn, as the auxiliary pulling force of the feeding teeth or the feeding force of the feeding wheel in the sewing machine sewing, in addition to providing the second pulling force In addition to the strength of the cloth, it also allows the sewing object and the sewing thread to be tightened during sewing to reduce wrinkles on the sewing line. Therefore, a well-designed sewing machine pulling roller base plate design will improve its sewing operation. with sewing quality.

The Taiwan Patent No. M296254 approved by the same applicant is an improved structure of a sewing machine pulling device, including: a roller frame; a cloth roller combined with the above roller frame; a power mechanism, which is connected to the above cloth roller through a transmission mechanism rotation; the fixed frame, combined with the sewing machine; and, combined with the regulating mechanism of the above-mentioned fixed frame. The control mechanism includes: a rail plate, combined with the above-mentioned fixed frame, with a track on the end surface of the plate; a dial control handle, combined with the above-mentioned rail plate in a rotatable form, and an active component at the other end; a driving piece , combined and interlocked with the above-mentioned active components, and a long hole is provided on the end surface of the piece; a telescopic rod, one end is fixedly combined with the above-mentioned fixed frame, and the other end is combined and interlocked with the above-mentioned roller frame and puller roller; an idler component, One end is sleeved on the track of the above-mentioned rail plate and moves inwardly, and the other end passes through the long hole of the driving piece and is combined with the movable rod.

Through the composition of the above-mentioned components, the auxiliary cloth feeding performance of the adjustable cloth roller to hold the working material is achieved; as far as the above-mentioned structure is concerned, it has good performance, but the applicant found that the roller frame and the cloth roller cannot It is very close to the back of the presser foot, so that there is a considerable distance between them, and wrinkles may still occur, and it is also not conducive to the sewing operations such as the rotation of the work piece and the chamfering, so it is necessary to improve.

Utility model content

The main purpose of this utility model is to improve the attachment distance between the feed roller and the rear edge of the presser foot with a simple structure, so that it has the smallest proximity gap, and at the same time cooperate with the needle plate that is set on the machine and matched with the feed roller The rolling assembly on the seat avoids wrinkling of the working material and provides a smoother rolling feeding effect.

In order to achieve the above purpose, the technical solution adopted by the utility model is an improved rolling feeding structure of a sewing machine. The sewing machine has a sewing needle part and a feeding assembly located in the needle plate seat, and the presser foot is arranged on the rear side of the sewing needle part, wherein The feed structure contains:

The roller frame is combined with a power transmission component, one end of which is connected to the transmission mechanism, and the other end is extended obliquely and assembled with a feeding roller, which is close to the rear edge of the presser foot;

A fixed frame, fixed on the rear side of the sewing machine, and a control mechanism combined with the fixed frame;

The power unit is connected to one end of the roller frame through the transmission mechanism; and

The control mechanism combined with the above-mentioned fixed frame includes at least one dial control handle, which rotates and controls the feeding roller to lift or press down;

A needle plate seat, corresponding to one end surface of the feeding roller, is provided with at least one rolling assembly.

The control mechanism mentioned above includes a rail plate, a dial control handle, and a telescopic rod; the rail plate is roughly a plate body and is locked and fixed on the above-mentioned fixed frame. There is a dial control handle, the dial control handle rotates and controls the feeding roller to lift up or down to stop;

The dial control handle has a dial handle. After passing through the above-mentioned rail plate through a shaft rod, the telescopic rod is linked at the end. There is a positioning post on the end side of the telescopic rod. The track of the rail plate is used as the limit stop at the two ends of its rotation direction;

The telescopic rod is pivotally arranged on the fixed frame and opposite to the other side of the rail plate of the dial control handle. There is a positioning post on its end side. The roller frame and the feeding roller are combined and linked.

With the above-mentioned components, the control mechanism is used to control the feeding roller to be close to the rear edge of the presser foot, and cooperate with the rolling assembly of the needle plate seat to achieve the smoothest rolling and feeding performance.

The utility model can use the control mechanism to make the feeding roller assembled at the obliquely extending end of the roller frame close to the arc-shaped concave part at the rear edge of the presser foot, so as to effectively reduce its attachment distance and have the smallest proximity gap, so that the working material Smoother rolling feeding and avoiding creases, and at the same time, with the rolling assembly of the needle plate seat, it is easier to perform sewing operations such as rotation and chamfering of the working material, so as to improve the sewing efficiency and the sewing quality of the working material. Effect.

Description of drawings

Fig. 1 is a perspective view of the utility model installed on a sewing machine.

Fig. 2 is a perspective view of the feeding structure of the utility model.

Fig. 3 is a three-dimensional combination diagram of the roller frame, the presser foot, and the needle plate seat of the utility model.

Fig. 4 is a schematic diagram of the regulating mechanism controlling the lifting of the rollers.

Fig. 5 is a schematic diagram of the regulating mechanism controlling the approach of the roller to the presser foot.

Explanation of main component symbols

Sewing Machine 10 Feed Roller 50

Needle Department 11 Fixed Frame 51

Needle plate seat 12 Power unit 52

Rolling assembly 121 Regulating mechanism 60

Feeding component 13 rail plate 61

Presser foot 14 track 611

Arc concave part 140 dial handle 62

Roller frame 20 dial handle 621

Power Transmission Assembly 30 Shaft Rod 622

Pulley 31, 32 Telescopic rod 63

Belt 33 Spring 630

Transmission mechanism 40 locating column 631

Detailed ways

Please refer to Fig. 1-3 firstly, the utility model is an improved rolling feeding structure of a sewing machine. The sewing machine 10 has a sewing needle part 11 and a feeding assembly 13 such as a cloth feeding tooth or a feeding wheel located in the needle plate seat 12. The rear edge of the presser foot 14 is an arc concave portion 140 , which is correspondingly arranged on the rear side of the sewing needle portion 11 . Among them, the feeding structure contains:

The roller frame 20 is combined with a power transmission assembly 30, and the power transmission assembly 30 includes two belt pulleys 31, 32 which are respectively located on the two end sides of the roller frame 20 and a belt 33 which is wound between the two pulleys 31, 32, and the pulley 31 at one end It is connected with the transmission mechanism 40, and the other end is extended obliquely and connected with a feeding roller 50 through the linkage of the pulley 32. The feeding roller 50 is close to the arc recess 140 at the rear edge of the presser foot 14:

A fixed frame 51, fixed on the rear side of the sewing machine 10, and a control mechanism 60 combined with the fixed frame 51;

The power unit 52 is connected to one end of the roller frame 20 through the transmission mechanism 40; and the control mechanism 60 combined with the above-mentioned fixed frame 51, rotates and controls the feeding roller 50 to lift or press down (refer to Figures 4 and 5):

A needle plate seat 12, which corresponds to an end surface of the feeding roller 50, is provided with at least one rolling assembly 121, and the rolling assembly 121 is a roller positioned on the needle plate seat 12;

Please also refer to FIGS. 1 and 2 , the control mechanism 60 mentioned above includes a rail plate 61 , a dial control handle 62 , and a telescopic rod 63 . The rail plate 61 is slightly in the form of a plate body and is locked on the above-mentioned fixed frame 51. A track 611 is provided on the end surface of the rail plate 61, preferably a track design with twists and turns to form a section shape. The outer side of the rail plate 61 The rotating part is provided with a dial control handle 62, and the dial control handle 62 is rotated to control the feeding roller 50 to lift up or press down to stop;

The toggle handle 62 has a toggle handle 621. After passing through the above-mentioned rail plate 61 through a shaft rod 622, a cam (not shown) is used at the end to link the telescopic rod 63. There is a positioning post 631 on the end side of the telescopic rod 63. , the dial handle 621 is used for the rotation operation of the synchronous stroke, so that the positioning column 631 can use the track 611 of the rail plate 61 as the limit stop at the two ends of its rotation direction (as shown in Figures 4 and 5);

The telescopic rod 63 is pivotally arranged on the fixed frame 51 and opposite to the other side of the rail plate 61 arranged on the dial control handle 62, wherein the telescopic rod 63 is set with a spring 630, and a positioning post 631 is arranged on its end side, and the positioning post 631 protrudes It is located in the track 611 of the track plate 61 , and the free end of the bottom side of the telescopic rod 63 is extended to be combined with the above-mentioned roller frame 51 and the feeding roller 50 for interlocking movement.

With the above structure, the regulating mechanism 60 is used to control the feeding roller 50 to be close to the arc recess 140 of the rear edge of the presser foot 14, and cooperate with the rolling assembly 121 of the needle plate base 12 to achieve the smoothest rolling feeding.

Claims (9)

1. the roll extrusion feeding structure-improved of a Sewing machines, Sewing machines have a suture needle portion and are positioned at the feeding material component of pin holder, and presser feet is located at suture needle portion rear side, it is characterized in that: the feeding structure comprises:

Turning rolls is combined with a power transfer assembly, and the one end is connected with transmission mechanism, and the other end is oblique to extend and winding has a feeding roller, and the feeding roller closely is connected to the presser feet trailing edge;

One fixed mount is packed in the Sewing machines rear side, and is incorporated into the regulating and controlling mechanism of fixed mount;

Power unit sees through transmission mechanism and is connected with turning rolls one end; And

Be incorporated into the regulating and controlling mechanism of said fixing frame, comprise one group of control handle at least, group control is controlled rotation on the feeding roller and is carried or press down;

One pin holder, an end face of its corresponding feeding roller is provided with at least one rolling assembly.

2. the roll extrusion feeding structure-improved of Sewing machines as claimed in claim 1, it is characterized in that: the presser feet trailing edge is an arc recess, and the feeding roller closely is connected to the arc recess of presser feet trailing edge.

3. the roll extrusion feeding structure-improved of Sewing machines as claimed in claim 1, it is characterized in that: the feeding structure comprises turning rolls, and turning rolls is combined with a power transfer assembly, and this power transfer assembly is a belt pulley set.

4. as the roll extrusion feeding structure-improved of claim 1 or 3 described Sewing machiness, it is characterized in that: turning rolls is combined with a power transfer assembly, power transfer assembly comprises two belt pulleys that set up turning rolls two end positions separately and the belt pulley set of a belt, the one belt pulley is connected with transmission mechanism, another belt pulley and the winding of feeding roller, and the belt that unrolls between two belt pulleys.

5. the roll extrusion feeding structure-improved of Sewing machines as claimed in claim 1, it is characterized in that: this regulating and controlling mechanism comprises: the rail plate, dial control, expansion link; This rail plate slightly is a plate body and the said fixing frame is located in locking, and the end face of rail plate is provided with a track, and rotate in the rail plate outside is provided with one group of control handle, dials control and rotation is controlled is carried or press down block on the feeding roller.

6. the roll extrusion feeding structure-improved of Sewing machines as claimed in claim 5 is characterized in that: the track of this rail plate be one have tortuous to form the track of section form.

7. the roll extrusion feeding structure-improved of Sewing machines as claimed in claim 5, it is characterized in that: this group control is more comprising: have one group of handle, after seeing through an axostylus axostyle and running through above-mentioned rail plate, in terminal mat one cam interlock expansion link, expansion link is distolateral a reference column, this group makes the rotating operation of making synchronous traverse reference column be able to the limit block of the track of rail plate as its rotation direction two ends.

8. the roll extrusion feeding structure-improved of Sewing machines as claimed in claim 5, it is characterized in that: this expansion link is hubbed at fixed mount and is located at relatively and dials control the opposite side of rail plate, expansion link suit one spring wherein, it is distolateral a reference column, reference column stretches out the track that is arranged in the rail plate, and expansion link bottom side free end then extends with above-mentioned rollers frame and feeding roller and combines interlock.

9. the roll extrusion feeding structure-improved of Sewing machines as claimed in claim 5, it is characterized in that: the pin holder end face is provided with a rolling assembly, and this rolling assembly is a roller bearing.

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