CN220012995U - Sewing machine with adjustable cloth feeding mechanism - Google Patents

Abstract

The utility model provides a sewing machine with an adjustable cloth feeding mechanism, which comprises a smooth table top and a sewing machine body fixed at the top of the smooth table top, wherein a cloth mechanism is arranged in the sewing machine body, and the cloth mechanism also comprises a tensioning assembly; the tensioning assembly comprises a fixed block fixed on a needle rod of the distributing mechanism and a hinged lug fixedly arranged on the side wall of the fixed block, the outer side of the hinged lug is connected with a rotating frame through shaft rotation, and the rotating frame is obliquely arranged; according to the utility model, the rotating frame and the tensioning roller are arranged, when the cloth mechanism longitudinally distributes cloth, the sewing machine body drives the sewing needle to move downwards to sew, the fixing block moves downwards along with the cloth, the tensioning roller at the end part of the rotating frame which is obliquely arranged contacts the cloth, and the cloth is outwards expanded through the limit of the smooth table top, so that the transverse tensioning function of the cloth is realized through the pressure of the rotating frame and the smooth table top on the cloth, and the sewing quality is improved.

Description

Sewing machine with adjustable cloth feeding mechanism

Technical Field

The utility model relates to the technical field of sewing machines, in particular to a sewing machine with an adjustable cloth feeding mechanism.

Background

The sewing machine can sew cotton, hemp, silk, wool, artificial fiber and other fabrics, leather, plastic, paper and other products, and the sewn stitch is neat, beautiful, flat, firm, fast in sewing speed and simple and convenient to use. The cloth feeding mechanism of the sewing machine is one of the cores, and mainly carries out vertical feeding on the sewn raw materials, thereby finishing sewing.

Through searching, the patent with the Chinese patent publication number of CN215051144U discloses a novel cloth feeding mechanism and a novel seam of a sewing machine, wherein the novel cloth feeding mechanism comprises a shaft, a tooth lifting frame, an outer presser foot, an inner presser foot and a needle bar; the device also comprises a first transmission assembly, a second transmission assembly and a third transmission assembly; the first transmission component is connected between the main shaft and the needle bar, and the main shaft rotates to drive the needle bar to move up and down through the first transmission component.

The above patent suffers from the following disadvantages: the machine can only feed longitudinally, and can not tension the cloth transversely before the sewing needle is used for sewing, so that folds can occur during feeding, and the sewing quality is affected.

For this purpose, a sewing machine with an adjustable feed mechanism is proposed.

Disclosure of Invention

Accordingly, it is desirable to provide a sewing machine with an adjustable feed mechanism that solves or alleviates the technical problems of the prior art, and at least provides a beneficial choice.

The technical scheme of the embodiment of the utility model is realized as follows: the sewing machine with the adjustable cloth feeding mechanism comprises a smooth table top and a sewing machine body fixed at the top of the smooth table top, wherein a cloth mechanism is arranged in the sewing machine body, and the cloth mechanism further comprises a tensioning assembly; the tensioning assembly comprises a fixed block fixed on a needle rod of the distributing mechanism and a hinged lug fixedly arranged on the side wall of the fixed block, the outer side of the hinged lug is connected with a rotating frame through shaft rotation, and the rotating frame is obliquely arranged; the end of the rotating frame is provided with a tensioning roller.

In some embodiments, the tensioning assembly is a two-set symmetrical arrangement.

In some embodiments, a first supporting plate is fixedly installed on the outer wall of the bottom of the fixed block, and a spring is fixedly installed on the outer wall of the side, opposite to the rotating frame, of the first supporting plate.

In some embodiments, the outer wall of the bottom of the other side of the fixed block is fixedly provided with a second supporting plate, the inner wall of the second supporting plate is connected with a limit bolt through threads, and the end part of the limit bolt is in contact fit with the rotating frame.

In some embodiments, the inner wall of the hinge lug is fixed with a shaft, the swivel mount is rotatably connected to the outer wall of the shaft, and the tension roller is rotatably connected to the outer wall of the swivel mount.

In some embodiments, the shaft engages the outer wall of the tensioning roller with a driving member.

In some embodiments, the transmission piece comprises a transmission groove formed in the inner wall of the tensioning roller and a stranded rope wound on the outer wall of the transmission groove and matched with the shaft.

In some embodiments, a wire hole through which the twisted wire passes is formed in the inner wall of the rotating frame.

By adopting the technical scheme, the embodiment of the utility model has the following advantages:

1. a sewing machine with adjustable work feed mechanism through setting up swivel mount and tensioning roller, after the vertical cloth of cloth mechanism, the sewing machine body drives the sewing needle and moves down when sewing, and the fixed block moves down thereupon this moment, and the tensioning roller of swivel mount tip that the slope was arranged contacts the cloth to realize outside expansion through smooth mesa spacing, thereby realize the horizontal tensioning function to the cloth through swivel mount and smooth mesa to cloth pressure, improve sewing quality.

2. A sewing machine with an adjustable cloth feeding mechanism is provided, and through the arrangement of a limit bolt, the limit bolt can limit and adjust the initial inclination angle of a rotating frame, so that the initial height of a tensioning roller is changed, and the transverse movement stroke of the tensioning roller is changed when the needle bar downward movement stroke is fixed, so that the adjustment of the tensioning progress is realized.

3. When the rotating frame rotates outwards, the rotating frame can drive the tensioning roller to rotate through the twisted rope due to the fact that the shaft is fixed, so that cloth is further tensioned outwards through the rotation of the tensioning roller, and the reliability of transverse tensioning is further guaranteed.

The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present utility model will become apparent by reference to the drawings and the following detailed description.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall block diagram of the present utility model;

FIG. 2 is a front view of a tensioner assembly of the present utility model;

FIG. 3 is a bottom view of the tensioning assembly of the present utility model;

FIG. 4 is a cross-sectional block diagram of a tensioning assembly of the present utility model;

fig. 5 is a diagram showing the structure of the rope, transmission groove and shaft of the present utility model.

Reference numerals: 1-smooth table top, 2-sewing machine body, 3-tensioning assembly, 4-cloth mechanism, 5-articulated ear, 6-axle, 7-swivel mount, 8-tensioning roller, 9-anti-skid pattern, 10-driving piece, 11-fixed block, 12-backup pad one, 13-spring, 14-limit bolt, 15-line hole, 16-backup pad two, 17-driving groove, 18-stranded rope.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Example 1:

as shown in fig. 1-5, a sewing machine with an adjustable cloth feeding mechanism includes a smooth table top 1 and a sewing machine body 2 fixed on the top of the smooth table top 1, wherein the sewing machine body 2 is internally provided with a cloth feeding mechanism 4, in this embodiment, the specific type of the cloth feeding mechanism 4 is not limited, and the sewing machine can be a conventional cloth feeding mechanism of a sewing machine, or can be a cloth feeding mechanism with a publication number of CN215 hinged lugs 51144U and a publication number of CN1 shaft 66377 rotating frame 7B, the structure and principle are all the prior art, and the sewing machine is mature, and no creative labor is made on the sewing machine body, so that details are not repeated, but the difference in this embodiment is that the cloth feeding mechanism 4 further includes a tensioning assembly 3; the tensioning assembly 3 comprises a fixed block 11 fixed on a needle rod of the distributing mechanism 4 and a hinge lug 5 welded on the side wall of the fixed block 11, the outer side of the hinge lug 5 is rotatably connected with a rotating frame 7 through a shaft 6, and the rotating frame 7 is obliquely arranged; a tensioning roller 8 is fixed at the end part of the rotating frame 7; this device through setting up swivel mount 7 and tensioning roller 8, after the vertical cloth of cloth mechanism 4, sewing machine body 2 drives the sewing needle and moves down when sewing, and fixed block 11 moves down along with this moment, and the tensioning roller 8 of the swivel mount 7 tip of slope arrangement contacts the cloth to spacing realization outside expansion through smooth mesa 1, thereby realize the transverse tensioning function to the cloth through swivel mount 7 and smooth mesa 1 to the cloth pressure, improve sewing quality.

In this embodiment, the outer wall of the tensioning roller 8 is provided with anti-slip patterns 9; by arranging the anti-slip patterns 9, the friction force between the tensioning roller 8 and the cloth can be increased, so that sliding is prevented, and tensioning is ensured.

In this embodiment, a first support plate 12 is welded to the bottom outer wall of the fixed block 11, and a spring 13 is welded to the outer wall of the opposite side of the first support plate 12 from the rotating frame 7; when the needle bar moves upwards, the spring 13 can pull the rotating frame 7 to reset.

In this embodiment, the tensioning assembly 3 is arranged in two sets of symmetry.

In this embodiment, a second support plate 16 is welded to the outer wall of the bottom of the other side of the fixed block 11, and a limit bolt 14 is connected to the inner wall of the second support plate 16 through threads, and the end of the limit bolt 14 is in contact fit with the rotating frame 7; by arranging the limit bolt 14, the initial inclination angle of the rotating frame 7 can be limited and adjusted, so that the initial height of the tensioning roller 8 is changed, and the transverse moving stroke of the tensioning roller 8 is changed when the needle bar downward moving stroke is fixed, so that the tensioning progress is adjusted.

In this embodiment: when the sewing machine body 2 drives the sewing needle to move downwards to sew after the fixing block 11 longitudinally distributes cloth, the fixing block 11 moves downwards at the moment, the tensioning roller 8 at the end part of the rotating frame 7 which is obliquely arranged contacts the cloth, and the cloth is expanded outwards through the limit of the smooth table top 1, so that the transverse tensioning function of the cloth is realized through the pressure of the rotating frame 7 and the smooth table top 1 on the cloth; when the needle bar moves upwards, the spring 13 can pull the rotating frame 7 to reset; and the limit bolt 14 can limit and adjust the initial inclination angle of the rotating frame 7, thereby changing the initial height of the tensioning roller 8, and further changing the transverse moving stroke of the tensioning roller 8 when the needle bar downward moving stroke is fixed.

Example 2:

a sewing machine with an adjustable feed mechanism, this embodiment is an alternative to embodiment 1, and differs from embodiment 1 in that: as shown in fig. 1 to 5, the inner wall of the hinge lug 5 is fixed with a shaft 6, the rotating frame 7 is rotatably connected to the outer wall of the shaft 6, and the tensioning roller 8 is rotatably connected to the outer wall of the rotating frame 7; and the shaft 6 is matched with the outer wall of the tensioning roller 8 by a transmission member 10.

In this embodiment, the transmission member 10 includes a transmission groove 17 formed on an inner wall of the tension roller 8 and a rope 18 wound around and engaged with the shaft 6 and an outer wall of the transmission groove 17.

In this embodiment, a wire hole 15 through which the twisted wire 18 passes is formed in the inner wall of the rotating frame 7.

In this embodiment: when the rotating frame 7 rotates outwards, the shaft 6 is fixed, and the tensioning roller 8 can be driven to rotate through the twisted rope 18, so that cloth is further tensioned outwards through the rotation of the tensioning roller 8, and the reliability of transverse tensioning is further guaranteed.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (8)

1. The utility model provides a sewing machine with adjustable work feed mechanism, includes smooth mesa (1) and is fixed in sewing machine body (2) at smooth mesa (1) top, sewing machine body (2) embeds has cloth mechanism (4), its characterized in that: the distributing mechanism (4) further comprises a tensioning assembly (3); the tensioning assembly (3) comprises a fixed block (11) fixed on a needle bar of the distributing mechanism (4) and a hinge lug (5) fixedly arranged on the side wall of the fixed block (11), the outer side of the hinge lug (5) is rotatably connected with a rotating frame (7) through a shaft (6), and the rotating frame (7) is obliquely arranged; the end part of the rotating frame (7) is provided with a tensioning roller (8).

2. A sewing machine having an adjustable feed mechanism as defined in claim 1, wherein: the tensioning assemblies (3) are symmetrically arranged in two groups.

3. A sewing machine having an adjustable feed mechanism as claimed in claim 1 or 2, wherein: the bottom outer wall of the fixed block (11) is fixedly provided with a first supporting plate (12), and the outer wall of the opposite side of the first supporting plate (12) and the rotating frame (7) is fixedly provided with a spring (13).

4. A sewing machine having an adjustable feed mechanism as claimed in claim 1 or 2, wherein: the outer wall of the bottom of the other side of the fixed block (11) is fixedly provided with a second supporting plate (16), the inner wall of the second supporting plate (16) is connected with a limit bolt (14) through threads, and the end part of the limit bolt (14) is in contact fit with the rotating frame (7).

5. A sewing machine having an adjustable feed mechanism as defined in claim 1, wherein: the inner wall of the hinge lug (5) is fixedly provided with a shaft (6), the rotating frame (7) is rotationally connected to the outer wall of the shaft (6), and the tensioning roller (8) is rotationally connected to the outer wall of the rotating frame (7).

6. A sewing machine having an adjustable feed mechanism as defined in claim 5, wherein: the shaft (6) is matched with the outer wall of the tensioning roller (8) through a transmission piece (10).

7. A sewing machine having an adjustable feed mechanism as defined in claim 6, wherein: the transmission part (10) comprises a transmission groove (17) formed in the inner wall of the tensioning roller (8) and a stranded rope (18) which is wound and matched with the shaft (6) and the outer wall of the transmission groove (17).

8. A sewing machine having an adjustable feed mechanism as defined in claim 7, wherein: the inner wall of the rotating frame (7) is provided with a wire hole (15) for the stranded rope (18) to penetrate.