CN113046934B

CN113046934B - Guide assembly and operation method for sewing thread on metal eyelet of double-needle sewing machine

Info

Publication number: CN113046934B
Application number: CN202110236448.3A
Authority: CN
Inventors: 王雪贵; 王雪平; 阮敬其; 徐眉; 黄年兵; 李然
Original assignee: High Fashion China Co ltd
Current assignee: High Fashion China Co ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2022-05-10
Anticipated expiration: 2041-03-03
Also published as: CN113046934A

Abstract

The invention provides a guide component and an operation method of a double-needle sewing machine for quilting threads to pass through a metal eyelet, aiming at overcoming the technical problems that the parallelism of thread feet is poor, the stitch length density is small and small, the stitch is crooked and the fabric is easy to wear and damage the surface gloss of the metal eyelet when the threads are quilted on two sides of the metal eyelet in the prior art. The guide assembly covers the periphery of the metal eyelet, feeding operation of the position of the metal eyelet is convenient to carry out, the consistency of the needle pitch is high, the stitch flatness is good, the guide assembly protects the metal eyelet and fabric, abrasion of the fabric and damage of surface gloss of the metal eyelet are reduced, and quality of a product is effectively guaranteed.

Description

Guide assembly and operation method for sewing thread on metal eyelet of double-needle sewing machine

Technical Field

The invention relates to the technical field of garment sewing, in particular to a guide assembly and an operation method for sewing threads on metal corns by a double-needle sewing machine.

Background

In the clothing processing process, the sewing operation of the metal eyelet is often needed, if the metal eyelet is sewn on the casual pants, two lines need to be quilted on two sides of the metal eyelet, and the lacing is arranged after the limit passage is formed. The currently common methods of operation include the following two: 1. after the eyelet is punched, a flat sewing machine is used for carrying out thread turning operation twice to form a threading channel; 2. the thread is quilted by using a double-needle sewing machine, and the limiting channel can be formed at one time. The problem lies in, when using the flush joint machine to carry out above-mentioned quilting line processing, need divide twice completion to walk the line operation, and the quilting line processing is wasted time and energy, and because the operation of walking the line before and the operation of walking the line after can't keep good uniformity, and the depth of parallelism of two lines feet is relatively poor, influences holistic aesthetic property on the one hand, and on the other hand is when carrying out the frenulum and wear to establish the smoothness nature relatively poor. When the double-needle sewing machine is used for quilting threads, the metal eyelet is higher than the fabric, the hardness of the metal eyelet is higher, the presser foot can only be pressed on the eyelet for limiting, the feeding operation difficulty of the metal eyelet position is higher, the needle distance is suddenly and sparsely and the stitch is distorted, the fabric is easily worn and damaged on the other hand, and serious quality problems are caused.

Chinese patent application No. CN201920681892.4 discloses a gasket charging device of an automatic riveting metal eyelet machine, which comprises a charging main board, a charging movable block, a gasket guide groove, a pushing seat and a pushing sheet, wherein the charging main board is provided with a slot hole, a charging movable block is arranged in the slotted hole and is fixedly connected with a charging main board through a baffle plate, one end of the charging main board is provided with an air cylinder fixing plate, an air cylinder is arranged on the air cylinder fixing plate, the output end of the cylinder penetrates through the cylinder fixing plate and is connected with the push seat, the push seat is fixedly connected with the push sheet, a push sheet pressing plate is arranged above the push sheet, the push sheet can slide back and forth along the gasket guide groove under the action of the cylinder, the bottom of the charging main board is provided with a lower eyelet die sleeve, the eyelet lower die sleeve is provided with an eyelet lower die, and the top end of the eyelet lower die is connected with the charging movable block through a spring.

The limiting of the corn is realized through the gasket support, manual correction is not needed, and the labor cost is saved; the device can not solve the technical problems that the stitch is inclined and the stitch length density is difficult to control in the quilting process.

Disclosure of Invention

The invention aims to overcome the technical problems that the parallelism of thread feet is poor, the density of needle pitches is small and small, the stitches are crooked, the fabric is easy to abrade and the surface gloss of the metal eyelet is damaged when the thread is quilted on two sides of the metal eyelet in the prior art, and provides a guide component and an operation method for the double-needle sewing machine to quilt the thread to pass through the metal eyelet.

In order to achieve the above object, the present invention adopts the following technical solutions.

The guide component comprises a presser foot component and a guide member, wherein the presser foot component comprises a fixing piece and a limiting piece, one end of the limiting piece is rotatably connected with the fixing piece, the guide member is located between the other end of the limiting piece and cloth, the guide member is arranged along the wiring direction of a sewing machine, and a plurality of through holes matched with metal corns are formed in the guide member.

The guide assembly is used for limiting the cloth or a guide component, so that the cloth and the like are prevented from being shifted in position in the sewing process, the limiting part is rotatably connected with the fixing part, when the limiting is required to be limited, the limiting part is moved to the corresponding position to be limited, and when the cloth is required to be replaced, the limiting part is rotated and moved away, so that the cloth or the guide component can be replaced; the guide member is used for protecting the metal eyelet, in the traditional sewing process, because the metal eyelet protrudes out of the surface of the cloth, the presser foot can only be pressed on the metal eyelet for limiting, the application aims to solve the technical problems that the surface of the metal eyelet is easily damaged by the limiting mode, the feeding operation difficulty of the position of the metal eyelet is large, the needle pitch is short and short, the stitch is distorted, the guide member is provided, the through hole on the guide member is matched with the metal eyelet, when the sewing is carried out, the metal eyelet is positioned in the through hole, the presser foot can be pressed on any position on the guide member to realize the limiting of the cloth, the surface damage of the metal eyelet caused by the presser foot pressing on the metal eyelet is avoided, meanwhile, the feeding operation consistency of the position of the metal eyelet and the feeding operation of other positions of the cloth is high, the needle pitch density uniformity and the flatness are improved.

Preferably, the mounting includes body and limit baffle, and limit baffle is located the one end that the body is close to the cloth, and the one end that limit baffle was kept away from to the body is equipped with the pivot, is equipped with the go-between that cup joints with the pivot on the locating part. The limiting baffle plate is used for assisting in positioning the cloth, the limiting part is connected with the body in a rotating mode, and the rotating fit relation is achieved through the coaxial arrangement of the connecting ring and the rotating shaft.

Preferably, the limiting part is L-shaped, the limiting part comprises a connecting section and a limiting section, the connecting ring is located at one end, far away from the limiting section, of the connecting section, the body comprises a support plate used for bearing the limiting section, the limiting section is overlapped with the support plate when the presser foot assembly is in a first working condition, and the limiting section is separated from the support plate when the presser foot assembly is in a second working condition.

As the preferred, spacing section includes first segmentation and second segmentation, and the second segmentation is the cover barrel-shaped, and the second segmentation is pegged graft with first segmentation and is cooperated, and the second segmentation is located one side that the linkage segment was kept away from to first segmentation, is equipped with the spout on the second segmentation, and the direction of arranging of spout is unanimous with the length direction of second segmentation, is equipped with adjusting screw in the spout. The first section and the second section can be adjusted in relative positions to meet the limiting requirements of different machining positions, and the adjusting screw is used for achieving relative stopping of the first section and the second section and further achieving length keeping of the limiting sections.

Preferably, the plurality of through holes are arranged at intervals along the length direction of the guide member, and the distance between every two adjacent through holes is consistent with the distance between every two adjacent metal corns. The purpose of the above design is to ensure that each metal eyelet is located inside a via hole.

Preferably, the thickness of the guide member is H, the height of the metal eyelet is H, and H is more than or equal to H. The thickness of the guide member is required to be more than or equal to the height of the metal eyelet, so that the presser foot assembly or the needle head assembly cannot abrade the metal eyelet to cause surface gloss damage in the sewing process.

A method of quilting a metal eyelet with a two-needle sewing machine of the guide assembly, comprising the sequential steps of:

(1) placing the cloth with the metal eyelet under the presser foot component, adjusting the limiting section to be superposed with the carrier plate, adjusting the distance between the second section and the connecting section until the presser foot component limits the cloth, and screwing down the adjusting screw;

(2) the first stage sewing operation: turning on a power supply of the sewing machine, operating the part without the metal eyelet according to a conventional sewing method, and stopping running at the position L in front of the metal eyelet;

(3) loosening the adjusting screw, shifting the limiting piece to rotate to separate the limiting piece from the fixing piece, placing the guide member on the cloth, enabling the via holes to correspond to the metal corns one by one, then rotating the limiting piece until the limiting section is overlapped with the support plate, adjusting the relative distance between the second section and the first section until good limiting is formed on the guide member, and screwing the adjusting screw;

(4) the second stage of sewing operation: the width of the guide component is smaller than the distance between two needles on the double-needle sewing machine, the sewing operation is continued, and the eyelet quilting line is smoothly finished at one time;

(5) the guide member is taken down and the power supply of the sewing machine is closed.

The application relates to an operation method for quilting threads on a metal eyelet by a double-needle sewing machine, which comprises the following steps: 1. putting the clothes with the metal eyelet under a presser foot of a double-needle sewing machine, and turning on a power supply of the machine; 2. starting sewing, operating the part without the metal corn according to a normal method, and stopping the operation when the position is 10mm in front of the metal corn; 3. and lifting the presser foot, and sewing the presser foot on the metal eyelet by using the guide member to smoothly complete eyelet quilting at one time. The method can solve the serious quality problems caused by difficult feeding at the metal corn, short and dense needle pitches, crooked stitches, easy abrasion of fabrics and damage of the surface gloss of the metal corn. The operation method is simple and convenient, the labor intensity is greatly reduced, and the production benefit is improved.

Preferably, L in the step (2) is 10 mm-15 mm.

Preferably, the length of the guide member is 90mm to 100mm, and the width of the guide member is 8mm to 16 mm.

In conclusion, the invention has the following beneficial effects: (1) in the application, the guide assembly covers the periphery of the metal eyelet, the feeding operation of the metal eyelet is convenient to carry out, the consistency of the needle pitch is high, and the stitch flatness is good; (2) the guide assembly protects the metal corn and the fabric, so that the abrasion of the fabric and the damage of the surface gloss of the metal corn are reduced, and the quality of the product is effectively guaranteed; (3) the consistency of the feeding operation at the metal eyelet position and the feeding operation at other positions of the cloth is higher, and the stitch density uniformity and stitch flatness are improved.

Drawings

Fig. 1 is a schematic view of a presser foot assembly of the present invention.

Fig. 2 is another schematic view of the presser foot assembly of the present invention.

Fig. 3 is a schematic view of a guide member in embodiment 1 of the present invention.

Fig. 4 is a partial schematic view of a guide member in embodiment 2 of the present invention.

Fig. 5 is a sectional view of a guide member in embodiment 2 of the present invention.

In the figure:

fixing part 1, locating part 2, via hole 3, body 4, limit baffle 5, pivot 6, linkage segment 7, spacing section 8, support plate 9, first subsection 10, second subsection 11, spout 12, adjusting screw 13, direction divides component 14, grafting chamber 15, reset spring 16, plug connector 17, upper member 18, lower floor's component 19, piece 20 resets.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

as shown in fig. 1 to 3, a guide assembly includes a presser foot assembly and a guide member, the presser foot assembly includes a fixing member 1 and a limiting member 2, one end of the limiting member is rotatably connected with the fixing member, the guide member is located between the other end of the limiting member and a cloth, the guide member is arranged along a routing direction of a sewing machine, and the guide member is provided with a plurality of via holes 3 matched with metal eyelets; the fixing piece comprises a body 4 and a limiting baffle 5, the limiting baffle is positioned at one end of the body close to the cloth, a rotating shaft 6 is arranged at one end of the body far away from the limiting baffle, and a connecting ring sleeved with the rotating shaft is arranged on the limiting piece; the limiting part is L-shaped and comprises a connecting section 7 and a limiting section 8, the connecting ring is positioned at one end of the connecting section far away from the limiting section, the body comprises a support plate 9 for bearing the limiting section, the limiting section is overlapped with the support plate when the presser foot component is in a first working condition, and the limiting section is separated from the support plate when the presser foot component is in a second working condition; the limiting section comprises a first section 10 and a second section 11, the second section is in a sleeve shape and is in plug fit with the first section, the second section is positioned on one side of the first section, which is far away from the connecting section, a sliding groove 12 is arranged on the second section, the arrangement direction of the sliding groove is consistent with the length direction of the second section, and an adjusting screw 13 is arranged in the sliding groove; the plurality of through holes are arranged at intervals along the length direction of the guide member, and the distance between every two adjacent through holes is consistent with the distance between every two adjacent metal corns; the thickness of the guide component is H, the height of the metal corn is H, and H is more than or equal to H.

(2) first stage sewing operation: turning on a power supply of the sewing machine, operating the part without the metal eyelet according to a conventional sewing method, and stopping running at the position L in front of the metal eyelet;

L in the step (2) is 10 mm-15 mm; the length of the guide member is 90mm ~100mm, and the width of the guide member is 8mm ~16 mm.

The presser foot subassembly is as shown in figure 1 and figure 2, and the presser foot subassembly includes the mounting that is located the drawing inboard and the locating part that is located the drawing outside, and the mounting includes limit baffle and body from a left side and right side in proper order, and limit baffle perpendicular to body is equipped with the guide way of arranging along its length direction on the body, and the right-hand member of body passes through the pivot with the locating part and rotates continuously. The locating part includes linkage segment and spacing section, and spacing section includes first segmentation and second segmentation from the right side left side, and the second segmentation is the cover tube-shape, and the cooperation of pegging graft of second segmentation and first segmentation is equipped with the spout of arranging along its length direction on the second segmentation, is equipped with adjusting screw in the spout, and the relative overlapping length of second segmentation and first segmentation can be adjusted as required, and it can to carry out spacingly to use adjusting screw to screw up after the adjustment is accomplished. As shown in fig. 3, in the present embodiment, the guide member is an integrated structure, and a plurality of through holes are formed on the guide member and are arranged at intervals along the length direction of the guide member. In the embodiment, when the guide member is used, the corresponding structural design is carried out according to the arrangement mode of metal corns on different products.

In the application, the guide assembly covers the periphery of the metal eyelet, the feeding operation of the metal eyelet is convenient to carry out, the consistency of the needle pitch is high, and the stitch flatness is good; the guide assembly protects the metal corn and the fabric, so that the abrasion of the fabric and the damage of the surface gloss of the metal corn are reduced, and the quality of the product is effectively guaranteed; the consistency of the feeding operation at the metal eyelet position and the feeding operation at other positions of the cloth is higher, and the stitch density uniformity and stitch flatness are improved.

Example 2:

the guide member is the integral type structure in embodiment 1, and the guide member is modular structure in this embodiment, can carry out the structural adjustment according to the quilting line demand. Specifically, as shown in fig. 4, the guide member is formed by splicing a plurality of guide sub-members 14, the right end of the left guide sub-member is provided with an insertion cavity 15, the left end of the right guide sub-member is provided with an insertion piece 17 which is in insertion fit with the insertion cavity, the two guide sub-members are connected through a return spring 16, and each guide sub-member is provided with a via hole matched with the metal eyelet.

In the actual processing and production process, the distance between two adjacent metal corns may be different on different products. The application provides a guide member is divided the component combination by a plurality of direction and is formed, when using, the operation personnel divide the distance between the component to the direction to adjust according to the distance between the metal helosis, use figure 4 as an example, the via hole and a metal helosis phase-match on the component are divided to the left side direction, the metal helosis forms spacingly to the via hole border, the via hole and another metal helosis phase-match on the component are divided to the right side direction, relative distance through grafting chamber and plug connector change can realize the distance adjustment, the adjustment back, the metal helosis divides the component to form spacingly with the via hole cooperation to the direction, reset spring's compression variation divides the component to form the position to keep to the direction. The structural adjustment of guide member can be realized according to the arrangement mode of different metal helosis to this embodiment, need not to carry out guide member's structural design according to different products in actual production, and the quilting line demand of the adaptable different products of same guide member.

Further, as shown in fig. 5, each guiding component in this embodiment can be designed to be a three-layer structure, including an upper-layer component 18, a lower-layer component 19 and a middle-layer resetting component 20, the through holes on the upper-layer component and the lower-layer component are coaxially arranged, in the thread sewing process, the upper-layer component moves downwards under the extrusion action of the sewing machine, moves downwards to be flush with the upper end face of the metal eyelet and stops moving downwards, and as the downward movement of the upper-layer component needs a certain time, the contact time of the metal eyelet and the sewing machine head is shortened, and the surface gloss of the metal eyelet can be maintained at a high level.

Claims

1. A guide assembly is characterized by comprising a presser foot assembly and a guide member, wherein the presser foot assembly comprises a fixing piece and a limiting piece, one end of the limiting piece is rotatably connected with the fixing piece, the guide member is positioned between the other end of the limiting piece and cloth, the guide member is arranged along the wiring direction of a sewing machine, and a plurality of through holes matched with metal eyelets are formed in the guide member;

the guide member is formed by splicing a plurality of guide branch members, the right end of the left guide branch member is provided with an insertion cavity, the left end of the right guide branch member is provided with a plug connector which is in insertion fit with the insertion cavity, the two guide branch members are connected through a reset spring, and each guide branch member is provided with a via hole matched with a metal eyelet.

2. The guide assembly according to claim 1, wherein the fixing member comprises a body and a limiting baffle, the limiting baffle is located at one end of the body close to the cloth, a rotating shaft is arranged at one end of the body far from the limiting baffle, and a connecting ring sleeved with the rotating shaft is arranged on the limiting member.

3. The guide assembly of claim 2, wherein the limiting member is L-shaped, the limiting member includes a connecting portion and a limiting portion, the connecting ring is disposed at an end of the connecting portion away from the limiting portion, the body includes a carrier plate for carrying the limiting portion, the limiting portion is overlapped with the carrier plate when the presser foot assembly is in the first operating condition, and the limiting portion is separated from the carrier plate when the presser foot assembly is in the second operating condition.

4. The guide assembly according to claim 3, wherein the limiting section comprises a first section and a second section, the second section is in a sleeve shape, the second section is in inserted fit with the first section, the second section is located on one side of the first section, which is far away from the connecting section, a sliding groove is formed in the second section, the arrangement direction of the sliding groove is consistent with the length direction of the second section, and an adjusting screw is arranged in the sliding groove.

5. The guide assembly of claim 1, wherein the guide member is an elongated member, and a plurality of vias are spaced along the length of the guide member, the spacing between two adjacent vias being the same as the spacing between two adjacent metal eyelets.

6. The guide assembly of claim 1, wherein the guide member has a thickness H and the metal eyelet has a height H, H ≧ H.

7. A method of operating a double needle sewing machine for quilting metal corns using a guide assembly according to any one of claims 1 to 6, comprising the steps of, in order:

(1) placing the cloth with the metal eyelet below the presser foot component, adjusting the limiting section to be superposed with the carrier plate, adjusting the distance between the second section and the connecting section until the presser foot component limits the cloth, and screwing up the adjusting screw;

(3) loosening the adjusting screw, shifting the limiting piece to rotate to separate the limiting piece from the fixing piece, placing the guide member on the cloth, enabling the via holes and the metal corns to correspond one by one, then rotating the limiting piece until the limiting section is superposed with the carrier plate, adjusting the relative distance between the second section and the first section until good limiting is formed on the guide member, and screwing the adjusting screw;

8. The method for sewing with stitches through metal eyelets of the two-needle sewing machine according to claim 7, wherein L in the step (2) is 10mm to 15 mm.

9. The method of claim 7, wherein the guide member has a length of 90mm to 100mm and a width of 8mm to 16 mm.