CN212404449U

CN212404449U - Needle protection structure of bent wrist machine

Info

Publication number: CN212404449U
Application number: CN202020181505.3U
Authority: CN
Inventors: 毛建荣
Original assignee: Bullmer Electromechanical Technology Co Ltd
Current assignee: Bullmer Electromechanical Technology Co Ltd
Priority date: 2020-02-18
Filing date: 2020-02-18
Publication date: 2021-01-26
Anticipated expiration: 2030-02-18

Abstract

The utility model provides a bent wrist machine's needle guard structure belongs to clothing manufacturing equipment technical field. It has solved its easy skip needle of current bent wrist machine, the problem of disconnected needle. This bent wrist machine's needle guard structure, bent wrist machine include the eedle, needle guard structure includes preceding needle guard, its characterized in that: the needle protection structure further comprises a rear needle protector, the two ends of the rear needle protector are respectively a protection end and an installation end, and the protection end of the rear needle protector and the front needle protector are respectively located on two sides of the needle. The needle protection structure of the curved wrist machine has the advantages of smooth stem passing, no needle jumping and no needle breakage.

Description

Needle protection structure of bent wrist machine

Technical Field

The utility model belongs to the technical field of the clothing manufacture equipment, a bent wrist machine is related to, especially a needle guard structure of bent wrist machine.

Background

The wrist bending machine is one elbow type tubular chain machine widely used in sewing shirt, cowboy, raincoat, etc. In the actual sewing work, the curved wrist can meet various fabrics, for example, when a special thick material is sewn or a cloth stalk is met, the phenomenon of needle skipping can occur, so that the stitch is uneven, the appearance is influenced, and the sewing quality is poor; or the needle breaking phenomenon occurs, the machine needle needs to be stopped and replaced, the failure rate is high, and the working efficiency is low.

Chinese patent (publication No. CN206189048U, published as 2017.05.24) discloses a curved needle thread guiding device of a curved wrist machine, wherein the curved wrist machine in the scheme is provided with a front needle protector, and when a special thick material is sewn or a cloth stalk is encountered, the needle cannot deflect forwards but can deflect backwards under the blockage of the front needle protector, so that the phenomena of needle skipping and even needle breakage occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem and providing a needle guard structure of a wrist bending machine.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a bent wrist machine's needle guard structure, bent wrist machine include the eedle, needle guard structure includes preceding needle guard, its characterized in that: the needle protection structure further comprises a rear needle protector, the two ends of the rear needle protector are respectively a protection end and an installation end, and the protection end of the rear needle protector and the front needle protector are respectively located on two sides of the needle.

In the needle guard structure of the curved wrist machine, the mounting end of the rear needle guard is mounted on the left side surface or the right side surface of the curved wrist machine shell through a screw.

In the needle guard structure of the bent wrist machine, a waist-shaped hole is formed in the mounting end of the rear needle guard, and the screw penetrates through the waist-shaped hole and is fixed on the bent wrist machine shell after moving left and right in the waist-shaped hole for positioning.

In the above needle guard structure of the wrist bending machine, there are two waist-shaped holes.

In the needle guard structure of the wrist bending machine, the mounting end of the rear needle guard is fixedly mounted on the bent needle and can move along with the bent needle.

In the needle guard structure of the wrist bending machine, the guard end of the rear needle guard includes a left end surface and an upper end surface, the left end surface is a needle guard surface, the upper end surface is a horizontal surface, an inclined surface is connected between the left end surface and the upper end surface, a height of a boundary line between the inclined surface and the left end surface from a needle point of the needle is defined as h1, and a height of a lower hole wall of the needle hole from the needle point of the needle is defined as h 2; the curved needle is sleeved on the curved needle shaft, when the curved needle hooks a thread, the needle moves from bottom to top, and when the needle moves until the vertical distance between the tip point of the needle tip and the axial lead of the curved needle shaft is 18.3mm, h1-h2 is less than or equal to 1 mm.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses effectively solved the jump needle that curved wrist machine appears when making special thick material or crossing the stalk, broken needle phenomenon, crossed the stalk smooth and easy, the stitch seam is level and smooth graceful, can deal with various sewing requirements better, promotes the sewing quality greatly.

2. The utility model discloses the mounted position of well back protection needle is nimble various, can satisfy the structure demand of the bent wrist machine of different models.

3. The utility model discloses simple structure, regulation convenience, with low costs.

Drawings

Fig. 1 is a schematic structural view of the present invention installed in a casing of a wrist bending machine.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic structural view of the middle and rear protection needles of the present invention.

Fig. 4 is a schematic view of the installation height of the present invention.

In the figure, 1, a machine needle; 11. a needle point is pointed; 12. a pinhole lower hole wall; 2. front needle protection; 3. protecting the needle; 31. a protection end; 311. a left end face; 312. an upper end surface; 313. an inclined surface; 314. a boundary line; 32. an installation end; 4. a screw; 5. a curved wrist machine shell; 6. a kidney-shaped hole; 7. bending a needle; 8. a curved needle shaft.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 4, the needle guard structure of the wrist bending machine comprises a needle 1, the needle guard structure comprises a front needle guard 2 and a rear needle guard 3, two ends of the rear needle guard 3 are respectively a guard end 31 and a mounting end 32, and the guard end 31 of the rear needle guard 3 and the front needle guard 2 are respectively located at two sides of the needle 1.

The wrist bending machine on the market only has a front guard needle 2, and when the curved needle 7 hooks a thread, the front guard needle 2 can limit the forward offset distance of the needle 1 but cannot limit the backward offset distance of the needle. In the actual sewing work, the curved wrist can meet various fabrics, for example, when a special thick material is sewn or a cloth stalk is met, the phenomenon of needle skipping can occur, so that the stitch is uneven, the appearance is influenced, and the sewing quality is poor; or the needle breaking phenomenon occurs, the machine needle 1 needs to be stopped and replaced, the failure rate is high, and the working efficiency is low. And the utility model discloses the back safety needle 3 of addding can restrict eedle 1 at the ascending skew distance of backward direction, has effectively solved the jump needle that the bent wrist machine appears when making up special thick material or crossing the stalk, and it is smooth and easy to cross the stalk, and the stitch seam is levelly and smoothly graceful, can deal with various sewing requirements better, promotes the sewing quality greatly.

As a further optimization of the embodiment, two waist-shaped holes 6 are formed in the mounting end 32 of the rear guard 3, and the screw 4 passes through the waist-shaped hole 6, moves left and right in the waist-shaped hole 6, is positioned and then is fixed on the left side surface or the right side surface of the wrist bending machine casing 5. The utility model discloses a fine setting of adjusting screw 4 mounted position in waist type hole 6 in order to realize back needle protector 3 and eedle 1 between the back interval makes bent wrist function satisfy the eedle 1 or the sewing requirement of suture of different thicknesses, and the suitability is wider. In addition, the rear needle protector 3 can be arranged on the left side face or the right side face of the bent wrist machine shell 5, can also be arranged on the bent needle 7 and can move along with the bent needle 7, and the flexible and various installation positions can meet the structural requirements of bent wrist machines of different models. The utility model discloses simple structure, installation and regulation convenience, with low costs.

Specifically, the shielding end 31 of the rear shielding needle 3 comprises a left end surface 311 and an upper end surface 312, the left end surface 311 is a needle shielding surface, the upper end surface 312 is a horizontal surface, an inclined surface 313 is connected between the left end surface 311 and the upper end surface 312, the height of a boundary line 314 between the inclined surface 313 and the left end surface 311 from a needle point 11 of the needle 1 is defined as h1, and the height of a lower hole wall 12 of the needle hole of the needle 1 from the needle point 11 of the needle 1 is defined as h 2; the curved needle 7 is sleeved on the curved needle shaft 8, when the curved needle 7 hooks a thread, the needle 1 moves from bottom to top, and when the needle 1 moves until the vertical distance between the needle point sharp point 11 and the axial lead of the curved needle shaft 8 is 18.3mm, h1-h2 is less than or equal to 1 mm. The above-mentioned installation distance requirement is made so that the newly installed rear protection needle 3 does not affect the thread loop formed when the looper 7 hooks the thread.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms needle, needle tip, needle aperture wall, front needle guard, rear needle guard, guard end, mounting end, kidney-shaped aperture, looper, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a bent needle guard structure of wrist machine, bent wrist machine include eedle (1), needle guard structure includes preceding needle guard (2), its characterized in that: the needle protection structure further comprises a rear needle protection body (3), the two ends of the rear needle protection body (3) are respectively a protection end (31) and a mounting end (32), and the protection end (31) of the rear needle protection body (3) and the front needle protection body (2) are respectively located on two sides of the needle (1).

2. The needle guard structure of a wrist bending machine according to claim 1, characterized in that: the mounting end (32) of the rear protective needle (3) is mounted on the left side surface or the right side surface of the bent wrist machine shell (5) through a screw (4).

3. The needle guard structure of a wrist bending machine according to claim 2, characterized in that: waist-shaped holes (6) are formed in the mounting ends (32) of the rear protective needles (3), and the screws (4) penetrate through the waist-shaped holes (6) and move left and right in the waist-shaped holes (6) to be positioned and then are fixed on the bent wrist machine shell (5).

4. The needle guard structure of a wrist bending machine according to claim 3, characterized in that: the number of the waist-shaped holes (6) is two.

5. The needle guard structure of a wrist bending machine according to claim 1, characterized in that: the mounting end (32) of the rear protective needle (3) is fixedly mounted on the curved needle (7) and can move along with the curved needle (7).

6. The needle guard structure of a wrist bending machine according to claim 5, characterized in that: the protection end (31) of the rear needle guard (3) comprises a left end face (311) and an upper end face (312), the left end face (311) is a needle protection face of the needle (1), the upper end face (312) is a horizontal plane, an inclined face (313) is connected between the left end face (311) and the upper end face (312), the height, from a needle point sharp point (11) of the needle (1), of a boundary line (314) of the inclined face (313) and the left end face (311) is defined as h1, and the height, from the needle point sharp point (11) of the needle (1), of a needle hole lower hole wall (12) of the needle (1) is h 2; the looper (7) is sleeved on the looper shaft (8), when the looper (7) hooks a thread, the machine needle (1) moves from bottom to top, and when the vertical distance between the needle point sharp point (11) and the axis of the looper shaft (8) when the machine needle (1) moves to 18.3mm, h1-h2 is less than or equal to 1 mm.