阅读说明：本技术 缝料薄厚检测装置及缝纫机 (Sewing material thickness detection device and sewing machine ) 是由 宋国庆 徐永明 赵林蔚 金琳 于 2019-10-14 设计创作，主要内容包括：本发明涉及缝纫机技术领域,尤其涉及一种缝料薄厚检测装置及包括该缝料薄厚检测装置的缝纫机。该缝料薄厚检测装置包括：支撑主体,具有用于与缝纫机本体的压脚支架可拆卸连接的安装部；活动体,可活动地设于支撑主体,活动体的一端位于缝料的上方,缝料的厚度发生变化时,通过缝料与活动体的接触使活动体发生运动；限位结构,用于限定活动体可向下运动至的最低位置,并使活动体在缝纫机本体进行抬压脚动作时与支撑主体同步动作；以及检测机构,用于检测活动体的运动幅度大小并将检测信息输送给缝纫机本体的控制模块。通过限位结构实现检测装置整体匹配压脚升降同步动作,并使活动体与缝纫台面之间始终具有间隙,避免活动体与缝纫台面接触磨损。(The invention relates to the technical field of sewing machines, in particular to a sewing material thickness detection device and a sewing machine comprising the same. This seam material thickness detection device includes: a support main body having an installation part detachably connected with a presser foot bracket of the sewing machine body; the movable body is movably arranged on the supporting main body, one end of the movable body is positioned above the sewing material, and when the thickness of the sewing material changes, the movable body moves by the contact of the sewing material and the movable body; the limiting structure is used for limiting the lowest position to which the movable body can move downwards and enabling the movable body to synchronously act with the support main body when the sewing machine body lifts the presser foot; and the detection mechanism is used for detecting the motion amplitude of the movable body and transmitting the detection information to the control module of the sewing machine body. The detection device is integrally matched with the presser foot to move up and down synchronously through the limiting structure, a gap is formed between the movable body and the sewing table board all the time, and the movable body is prevented from being in contact with the sewing table board to be abraded.)

1. A sewing material thickness detection device is characterized by comprising:

a support main body (1) having a mounting part (11) detachably connected with a presser foot bracket (8) of a sewing machine body;

the movable body (2) is movably arranged on the supporting main body (1), one end of the movable body (2) is positioned above the sewing material, and when the thickness of the sewing material changes, the movable body (2) moves through the contact between the sewing material and the movable body (2);

the limiting structure is used for limiting the lowest position to which the movable body (2) can move downwards and enabling the movable body (2) to synchronously act with the supporting main body (1) when the sewing machine body carries out presser foot lifting action; and

the detection mechanism is used for detecting the motion amplitude of the movable body (2) and transmitting detection information to the control module of the sewing machine body.

2. The sewing material thickness detection device according to claim 1, wherein the limiting structure comprises a limiting member (3) arranged on the movable body (2), and the limiting member (3) is used for being matched and abutted with the upper surface of a presser foot (9) of the sewing machine body.

3. The sewing material thickness detection device according to claim 2, characterized in that the limiting member (3) is sleeved with an adjusting member (4) with adjustable installation position, the adjusting member (4) is in contact with the upper surface of the presser foot (9), and the distance between the limiting member (3) and the presser foot (9) is changed by the change of the installation position of the adjusting member (4).

4. The cloth thickness detection apparatus according to claim 1, wherein the movable body (2) is provided on the support body (1) so as to be linearly reciprocated relative to the support body (1).

5. The cloth thickness detection apparatus according to claim 4, further comprising an elastic member (7), wherein the elastic member (7) is elastically pressed between the movable body (2) and the support main body (1) in a movement direction of the movable body (2).

6. The sewing material thickness detection device according to claim 4, wherein the limiting structure comprises a limiting portion (16) arranged on the support main body (1), the movable body (2) is provided with a limiting groove (21) extending along the movement direction of the movable body (2), and the limiting portion (16) is inserted into the limiting groove (21) and is in clamping fit with the upper end of the limiting groove (21).

7. The sewing material thickness detection device according to claim 6, further comprising an elastic member (7), wherein the elastic member (7) is elastically pressed between the lower end of the limiting groove (21) and the limiting portion (16).

8. The sewing material thickness detection device according to claim 6, wherein the mounting position of the stopper portion (16) on the support main body (1) is adjustable.

9. The sewing material thickness detection device according to claim 1, wherein the detection mechanism comprises a detection element (5) arranged on the support main body (1) and a detected element (6) arranged on the movable body (2), the detection element (5) is connected with the control module, and the movable body (2) moves to drive the detected element (6) to displace relative to the detection element (5).

10. A sewing machine comprising the seam material thickness detecting apparatus according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of sewing machines, in particular to a sewing material thickness detection device and a sewing machine comprising the same.

Background

The sewing machine is provided with a sewing material thickness detection device which is used for identifying the change of the sewing material thickness (such as thickening of the sewing material, thinning of the sewing material and stalk passing of the sewing material) in the sewing process so as to facilitate the control system of the sewing machine to correspondingly adjust the sewing speed.

The sewing machine can lift the presser foot in the sewing process so as to conveniently put in sewing materials and ensure the flatness of the sewing materials. The existing sewing material thickness detection device cannot be matched with the synchronous action of the presser foot lifting action, so that cloth cannot be put into the sewing material after the presser foot is lifted.

Disclosure of Invention

The invention aims to solve the technical problem of providing a sewing material thickness detection device which can be matched with the synchronous action of the presser foot lifting action of a sewing machine so as to overcome the defects in the prior art.

In order to solve the technical problems, the invention adopts the following technical scheme:

a seam material thickness detection device comprises: a support main body having an installation part detachably connected with a presser foot bracket of the sewing machine body; the movable body is movably arranged on the supporting main body, one end of the movable body is positioned above the sewing material, and when the thickness of the sewing material changes, the movable body moves by the contact of the sewing material and the movable body; the limiting structure is used for limiting the lowest position to which the movable body can move downwards and enabling the movable body to synchronously act with the support main body when the sewing machine body lifts the presser foot; and the detection mechanism is used for detecting the motion amplitude of the movable body and transmitting the detection information to the control module of the sewing machine body.

Preferably, limit structure is including locating the locating part on the movable body, and the locating part is used for the upper surface cooperation butt with the presser foot of sewing machine body.

Preferably, the limiting piece is sleeved with an adjusting piece with an adjustable installation position, the adjusting piece is in contact with the upper surface of the presser foot, and the distance between the limiting piece and the presser foot is changed due to the change of the installation position of the adjusting piece.

Preferably, the movable body is disposed on the support body to be linearly reciprocated relative to the support body.

Preferably, the support device further comprises an elastic member elastically pressing between the movable body and the support body in the moving direction of the movable body.

Preferably, limit structure is including locating the spacing portion on the support subject, and the activity body is equipped with the spacing groove that extends along the direction of motion of the activity body, and spacing portion pegs graft in the spacing inslot and with the cooperation of the upper end joint in spacing groove.

Preferably, the elastic part is elastically pressed between the lower end of the limiting groove and the limiting part.

Preferably, the mounting position of the stopper portion on the support main body is adjustable.

Preferably, the detection mechanism comprises a detection element arranged on the support main body and a detected element arranged on the movable body, the detection element is connected with the control module, and the movable body drives the detected element to displace relative to the detection element when moving.

A sewing machine comprises the sewing material thickness detection device.

Compared with the prior art, the invention has the remarkable progress that:

the limiting structure limits the lowest position of the movable body which can move downwards, so that a gap is formed between the movable body and the sewing table top of the sewing machine body all the time, and contact abrasion and impact sound between the movable body and the sewing table top can be avoided. Meanwhile, the movable body and the support main body synchronously act when the presser foot lifting action is carried out on the sewing machine body through the limiting structure, and the relative position of the movable body and the support main body is kept unchanged in the presser foot lifting process, namely, the whole detection device synchronously acts along with the presser foot lifting action of the sewing machine body, the integral presser foot lifting synchronous action matching with the sewing machine body of the detection device is realized, and the sewing material can smoothly pass through after the presser foot lifting can be ensured.

Drawings

Fig. 1 is a schematic structural view of a view angle when the sewing material thickness detecting device according to the first embodiment of the present invention is mounted on a sewing machine body.

Fig. 2 is a schematic structural view of another view angle when the sewing material thickness detection device according to the first embodiment of the present invention is mounted on a sewing machine body.

Fig. 3 is a schematic structural diagram of a seam material thickness detection device according to a first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the seam material thickness detection apparatus according to the first embodiment of the present invention, after removing the cover.

Fig. 5 is a schematic front view of the seam material thickness detecting apparatus according to the first embodiment of the present invention with the cover removed.

Fig. 6 is a schematic view showing the installation of the detecting element of the seam material thickness detecting apparatus according to the first embodiment of the present invention.

Fig. 7 is a schematic structural view of a movable body of the seam material thickness detection apparatus according to the first embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a housing of the seam material thickness detection apparatus according to the first embodiment of the present invention.

Fig. 9 is a schematic structural view of a seam material thickness detection apparatus according to a second embodiment of the present invention, with a cover removed.

Fig. 10 is a schematic front view of the seam material thickness detecting apparatus according to the second embodiment of the present invention with the cover removed.

Fig. 11 is a schematic structural diagram of a housing of the seam material thickness detection apparatus according to the second embodiment of the present invention.

Wherein the reference numerals are as follows:

1. support body 11, mounting part

12. Mounting hole 13, casing

14. Sealing cover 15, chute

16. Limiting part 17 and second waist-shaped hole

18. Adjusting screw 19, first connecting screw

2. Movable body 21, limiting groove

22. Guide part 3, stopper

4. Adjusting piece 41 and first kidney-shaped hole

5. Detection element 51, support

52. Second connecting screw 6, element under test

7. Elastic member 8, presser foot support

9. Pressure foot 10, mounting screw

Detailed Description

The following describes an embodiment of the present invention in further detail with reference to fig. 1 to 11. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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 by those skilled in the art according to specific situations.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.