WO2024032779A1

WO2024032779A1 - Rotary hook basket and rotary hook structure having same

Info

Publication number: WO2024032779A1
Application number: PCT/CN2023/112617
Authority: WO
Inventors: 王建波
Original assignee: 无锡品益缝纫机有限公司
Priority date: 2022-08-12
Filing date: 2023-08-11
Publication date: 2024-02-15

Abstract

A rotary hook basket, comprising a rotary hook basket body (1). A positioning slot (2) and a rotary hook basket needle slot (3) are formed in an extension section of the rotary hook basket body. A positioning column mounting base (4) is provided on the hook basket body. The distance between two sides of the rotary hook basket needle slot is not uniform, so that during sewing, a gap between a needle and the rotary hook basket needle slot is adjustable. In the rotary hook basket, the gap between an edge of the rotary hook basket needle slot and the needle can be effectively adjusted, so that a good needle protection effect is achieved, the adaptability of the rotary hook basket is improved, and a good sewing effect is ensured. Also disclosed is a rotary hook structure comprising the rotary hook basket.

Description

A kind of rotary hook bowl and its rotary hook structure

Technical field

The present invention relates to the technical field of sewing equipment, and in particular to a rotary hook bowl and its rotary hook structure.

Background technique

The rotary hook is an essential component in woven sewing. Its function is to lift the upper thread on the sewing needle and interweave it with the sutures in the bobbin to form seam stitches. The rotary hook includes a rotary hook body and a rotary hook. There is a rotary hook bowl placed in the body, and a rotary hook bowl needle drop groove is provided on the rotary hook bowl. The needle passes through the rotary hook bowl needle drop groove. One side of the rotary hook bowl needle drop groove plays the role of needle protection. The crochet hook thread of the shuttle body interweaves with the bottom thread in the hook bowl to form a stitch to realize the sewing of clothes. The existing needle drop groove 1 of the hook bowl is in the shape of equidistant holes (see Figure 1). The needle drop position of the machine needle 2 is fixed, the lateral position of the needle drop slot of the hook bowl is relatively fixed, and the longitudinal position can be adjusted by the positioning hook. When the needle drop slot of the hook bowl is in the shape of equidistant holes, when the needle drop slot 1 of the hook bowl is adjusted longitudinally, the needle and The distances between the edges 3 of the needle drop grooves of the rotary hook bowl are all equal. Due to the complexity of sewing fabrics, the distance between the needle and the needle drop groove of the rotary hook bowl needs to be adjusted to achieve a good needle protection effect. Therefore, the existing rotary hook As a result, the gap between the machine needle and the hook bowl needle groove cannot be adjusted, and its adaptability is poor, thus affecting the sewing effect.

Contents of the invention

In view of the shortcomings of the existing technology, the present invention provides a rotary hook bowl, which can effectively adjust the gap between the edge of the needle drop groove of the rotary hook bowl and the machine needle, can achieve a good needle protection effect, and effectively improves the performance of the rotary hook bowl. adaptability, thereby better ensuring the sewing effect, and the invention also provides a rotary hook structure.

The technical solution is as follows: a rotary hook bowl, which includes a rotary shuttle bowl body, a positioning groove and a rotary hook bowl needle drop groove are provided on the outer surface of the rotary shuttle bowl body, and a positioning post is provided on the rotary shuttle bowl body. The mounting base is characterized in that: the distance between both sides of the needle drop groove of the hook bowl is unequal, and during sewing, the gap between the needle and the needle drop groove of the hook bowl is adjustable.

It is further characterized in that: one side of the needle drop groove of the hook bowl is inclined; both ends of the needle drop groove of the hook bowl are inclined; one side of the needle drop groove of the hook bowl is stepped; The two ends of the needle drop groove of the hook bowl are multi-level stepped.

A rotary hook structure, which includes a rotary hook seat, a rotary hook bowl is provided in the rotary hook seat, a retaining ring and a positioning ring are provided on the rotary hook seat, and the retaining ring and the positioning ring cooperate with the The rotary hook seat positions the rotary hook bowl, and is characterized in that: the distance between both sides of the needle drop groove of the rotary hook bowl is unequal, forming an adjustable gap between the needle and the needle drop groove of the rotary hook bowl; the rotary hook bowl One side of the needle drop groove is inclined; the two ends of the needle drop groove of the hook bowl are inclined; the needle drop groove of the hook bowl is stepped on one side; the needle drop groove of the hook bowl has two ends on one side. The end is multi-level stepped.

The present invention adopts the above solution. Since the distance between both sides of the needle drop groove of the hook bowl is unequal, the gap between the needle and the needle drop groove of the hook bowl is adjustable, thereby effectively adjusting the gap between the edge of the needle drop groove of the hook bowl and the machine needle. The gap can achieve a good needle protection effect, which effectively improves the adaptability of the rotary hook bowl, thereby better ensuring the sewing effect. The present invention also provides a rotary hook structure.

Description of drawings

Figure 1 is a schematic diagram of the needle drop slot of the existing hook bowl;

Figure 2 is a schematic diagram of the needle drop groove of the rotary hook bowl according to the present invention and a schematic diagram of the structure of the rotary hook;

Figure 3 is a left view of Figure 2;

Figure 4 is a schematic structural diagram of the second embodiment of the needle drop groove of the hook bowl;

Figure 5 is a schematic structural diagram of the second embodiment of the needle drop groove of the hook bowl;

Figure 6 is a schematic structural diagram of the third embodiment of the needle drop groove of the hook bowl;

Figure 7 is a schematic structural diagram of the third embodiment of the needle drop groove of the hook bowl;

Figure 8 is a schematic structural diagram of the third embodiment of the needle drop groove of the hook bowl;

Figures 9-11 are schematic diagrams of the present invention.

Implementation

The present invention will be further described below in conjunction with the accompanying drawings and examples.

Example

See Figure 2 and Figure 3. A kind of rotary hook bowl, which includes a rotary shuttle bowl body 1. The outer extension of the rotary shuttle bowl body 1 is provided with a positioning groove 2 and a rotary hook bowl needle drop groove 3. The shuttle bowl body 1 is provided with a positioning slot. Column 4, one side of the needle drop groove of the hook bowl is inclined, forming an unequal distance between the two sides of the needle drop groove of the hook bowl. When sewing, the gap between the needle and the needle drop groove of the hook bowl is adjustable. The lock shell and the lock core are placed in the shuttle bowl body and are positioned through the positioning column. The size of the needle will affect the distance between the needle and the edge 6 of the needle drop groove of the shuttle bowl. The positioning groove cooperates with the positioning hook 7 fixed on the frame to position The hook can be adjusted in the direction of the arrow through the bolt 8 and the long slot hole 9. The relative position of the shuttle bowl can be adjusted longitudinally through the positioning hook, thereby adjusting the relative distance between the edge 6 of the needle groove of the hook bowl and the needle. One side of the needle groove is inclined, and the distance between the two sides of the needle groove of the rotary hook bowl is unequal. When sewing, the gap between the needle and the needle groove of the rotary hook bowl is adjustable. The position of the needle groove of the rotary hook bowl is adjusted. , realizes the change in the size of the gap between the needle and the edge of the needle groove of the hook bowl, thereby effectively protecting the needle from being hit by the hook tip, improving the adaptability of the hook bowl, and thus better ensuring the sewing effect. .

Example

See Figure 2, Figure 3, Figure 4 and Figure 5. A kind of rotary shuttle bowl, which includes a rotary shuttle bowl body 1. The outer extension of the rotary shuttle bowl body 1 is provided with a positioning groove 2 and a rotary shuttle bowl needle drop groove 3. The shuttle bowl The body 1 is provided with a positioning post 4. The two ends of one side of the needle drop groove of the rotary hook bowl are inclined. The distance between the two sides of the needle drop groove of the rotary hook bowl is unequal. When sewing, a gap is formed between the needle and the needle drop groove of the rotary hook bowl. It is adjustable. The lock shell and the lock core are placed in the shuttle bowl body and are positioned through the positioning column. The size of the needle will affect the distance between the needle and the edge 6 of the needle drop groove of the hook bowl. The positioning groove is connected to the positioning hook 7 fixed on the frame. In combination, the positioning hook can be adjusted in the direction of the arrow through the bolt 8 and the long slot hole 9. The relative position of the shuttle bowl body can be adjusted longitudinally through the positioning hook, thereby adjusting the relative distance between the edge 6 of the needle drop slot of the hook bowl and the needle. The two ends of one side of the needle drop groove of the hook bowl are inclined. By adjusting the position of the needle drop groove of the hook bowl, the size of the gap between the needle and the edge of the needle drop groove of the hook bowl is changed, thereby effectively protecting the needle and preventing it from being rotated. The impact of the hook tip improves the adaptability of the hook bowl, thereby better ensuring the sewing effect.

Example

See Figure 2, Figure 3, Figure 6, Figure 7 and Figure 8. A rotary hook bowl, which includes a rotary shuttle bowl body 1. The outer extension of the rotary shuttle bowl body 1 is provided with a positioning groove 2 and a rotary shuttle bowl needle drop groove 3. , there is a positioning post 4 on the shuttle bowl body 1. One side of the needle drop groove of the shuttle bowl is stepped. The lock shell and the lock core are placed in the shuttle bowl body. They are positioned by the positioning post. The size of the needle will affect the needle and the spindle. The distance between the edge 6 of the needle drop groove of the shuttle bowl and the positioning groove cooperate with the fixed positioning hook 7 on the frame. The positioning hook can be adjusted in the direction of the arrow through the bolt 8 and the long slot hole 9. The relative position of the shuttle bowl body can be adjusted longitudinally through the positioning hook. position, thereby adjusting the relative distance between the edge 6 of the needle drop slot of the hook bowl and the needle. Since one side of the needle drop slot of the hook bowl is stepped, by adjusting the position of the needle drop slot of the hook bowl, the needle and the hook are The size of the gap at the edge of the needle groove of the bowl changes, thereby effectively protecting the needle from being hit by the hook tip. It can adapt to needles of different diameters, improves the adaptability of the hook bowl, and thus better ensures the sewing effect. .

See Figure 2, a rotary hook structure, which includes a rotary hook seat 10. A rotary hook bowl 1 is provided in the rotary hook seat 10. The rotary hook base 11 is provided with a retaining ring 11 and a positioning ring 12. The retaining ring 11 and the positioning ring are arranged on the hook seat 11. 12 cooperates with the hook seat 11 to position the hook bowl 1:

See Figure 2 and Figure 3. The outer extension of the hook bowl 1 is provided with a positioning groove 2 and a needle drop slot 3 for the hook bowl. The shuttle bowl body 1 is provided with a positioning post 4. One side of the hook bowl needle drop slot is inclined.

See Figure 2, Figure 3, Figure 4, and Figure 5. The outer extension of the hook bowl body 1 is provided with a positioning groove 2 and a needle drop slot 3 for the hook bowl. The shuttle bowl body 1 is provided with a positioning post 4, and the hook bowl needle drop slot is Both ends of one side of the groove are inclined.

See Figure 2, Figure 3, Figure 6, Figure 7, and Figure 8. The outer extension of the rotary hook bowl 1 is provided with a positioning groove 2 and a rotary hook bowl needle drop groove 3. The shuttle bowl 1 is provided with a positioning post 4. One side of the needle groove of the bowl is stepped, including multi-step stepped.

The position marked 5 in the attached figure is the position where the needle penetrates into the needle drop groove of the hook bowl.

The structure of Figure 5 in the second embodiment realizes three distance changes, the distance between the upper end and the lower end changes, and the distance in the middle part is equal.

See Figure 6, Figure 7, and Figure 8. Embodiment 3 of the present invention can use multiple steps and different types of steps. Of course, the steps listed in the embodiment of the present invention are not a complete list. As long as they belong to steps and their deformations, through The positioning hook changes the position of the hook bowl so that the gap between the needle and the edge of the needle groove of the hook bowl can be adjusted, which improves the adaptability of the hook bowl, and is within the scope of protection of the present invention.

The working principle of sewing machine sewing:

See Figure 9. When the needle 13 goes down, the needle passes through the fabric 14, passes through the needle plate hole 15 and passes through the needle plate 16 of the sewing machine, and forms a needle guard through the edges 18-1 and 18-2 of the needle drop groove 17 to prevent the needle from slipping. At this time, the suture 19 is in a tensioned state. When the needle 13 descends and reaches the bottom dead center, other mechanisms drive the needle upward. Since one side of the needle is provided with a groove and the other side is smooth , when the needle moves downward, the pressure between the needle and the fabric creates resistance to the suture 19 on the needle, so that when the needle moves upward, the suture on the smooth side of the needle forms a thread throw 20, and the thread on the hook The crochet hook 21 passes through the thread throw 20 to drive the suture to rotate and knot the bottom thread coming out of the bobbin case to form a stitch (this process is a prior art in this field).

Since the diameter of the machine needle varies, when the needle is thicker, the edges 18-1 and 18-2 of the needle drop groove 17 require a large distance to prevent the needle from colliding with the edges 18-1 and 18-2, causing the machine to crash. When the needle is thin, the distance between the edges 18-1 and 18-2 of the needle drop groove 17 is required to be small to ensure the protective effect of the edges 18-1 and 18-2 on the needle 13.

Because the thickness of the fabric varies, when the fabric is thicker, the edges 18-1 and 18-2 of the needle drop groove 17 require a large distance to prevent the needle from colliding with the edges 18-1 and 18-2. At this time, the distance between the edges 18-1 and 18-2 of the needle drop groove 17 is required to be small to ensure the protective effect of the edges 18-1 and 18-2 on the needle 13.

Figure 10 and Figure 11, if the distance between the edges 18-1 and 18-2 of the needle drop groove 17 is large, the deformation of the needle in the needle drop groove 17 will be large, so the thread throw will be deflected, regardless of whether the needle is to the left Or deflecting to the right will affect the crochet hook's ability to pass through the thread stably. If the needle deflects to the right, it will also cause the crochet hook to hit the needle.

In summary, the distance between the edges 18-1 and 18-2 of the needle drop groove 17 has a greater impact on the work of the sewing machine rotary hook and the entire sewing effect. Therefore, the present utility model adopts a needle drop groove. The side is inclined, and the positioning hook is adjusted forward and backward so that the gap between the edges 18-1 and 18-2 of the needle drop groove 17 and the needle can be adjusted to correspond to the sewing conditions of needles of different diameters or fabrics of different thicknesses, ensuring It stabilizes the formation of the needle guard and thread throw, improves the adaptability of the hook bowl and hook, and thus better ensures the sewing effect.

In this embodiment, the specific structure on one side of the needle drop groove of the hook bowl is only a schematic description, and it can also be in the form of an arc. As long as the distance between the arcs is not equal, the gap between the needle and the edge of the needle drop groove of the hook bowl can be adjusted. Improved adaptability of the hook bowl is within the scope of protection of the present invention.

The present invention and its embodiments have been schematically described above. This description is not limiting. What is shown in the drawings is only one of the embodiments of the present invention. The actual structure is not limited thereto. Those skilled in the art can Those who are inspired by the invention and design structural methods and embodiments similar to the technical solution without creative creativity shall fall within the protection scope of the invention without departing from the purpose of the invention.

Claims

A rotary hook bowl, which includes a rotary shuttle bowl body. A positioning groove and a rotary hook bowl needle drop groove are provided on the outer extension of the rotary shuttle bowl body. The shuttle bowl body is provided with a positioning post mounting seat, and is characterized by: The distance between the two sides of the needle drop groove of the hook bowl is unequal. When sewing, the gap between the machine needle and the needle drop groove of the hook bowl is adjustable.
A rotary hook bowl according to claim 1, characterized in that one side of the needle drop groove of the rotary hook bowl is inclined.
A rotary hook bowl according to claim 1, characterized in that two ends of one side of the needle drop groove of the rotary hook bowl are inclined.
A rotary hook bowl according to claim 1, characterized in that one side of the needle drop slot of the rotary hook bowl is stepped.
A rotary hook bowl according to claim 1, characterized in that the two ends of the needle drop groove of the rotary hook bowl are multi-step shaped.
A rotary hook structure, which includes a rotary hook seat, a rotary hook bowl is provided in the rotary hook seat, a retaining ring and a positioning ring are provided on the rotary hook seat, and the retaining ring and the positioning ring cooperate with the The rotary hook seat positions the rotary hook bowl, and is characterized in that: the distances on both sides of the needle drop groove of the rotary hook bowl are unequal, and during sewing, the gap between the needle and the needle drop groove of the rotary hook bowl is adjustable.
A rotary hook structure according to claim 6, characterized in that one side of the needle drop groove of the rotary hook bowl is inclined.
A rotary hook structure according to claim 6, characterized in that two ends of one side of the needle drop groove of the rotary hook bowl are inclined.
A rotary hook structure according to claim 6, characterized in that one side of the needle drop groove of the rotary hook bowl is stepped.
A rotary hook structure according to claim 6, characterized in that the two ends of one side of the needle drop groove of the rotary hook bowl are multi-step shaped.