CN218115819U

CN218115819U - Multi-needle automatic thread trimming mechanism

Info

Publication number: CN218115819U
Application number: CN202222679256.2U
Authority: CN
Inventors: 张杰辉
Original assignee: Strong H Machinery Technology Co ltd
Current assignee: Strong H Machinery Technology Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2022-12-23
Anticipated expiration: 2032-10-12

Abstract

The utility model relates to a garment machinery specifically is an automatic thread trimming mechanism of many needles, including a plurality of line knives that collude, different with prior art, every colludes line knife and includes that the one end point towards many needles faller contracts into the knife tip, and the right side that is close to the knife tip sets up hooked first blade and second blade, and first blade is local thin cuts and forms the step groove. The utility model discloses can be applied to the multi-needle machine, realize the automatic trimming of multi-needle machine and/or the double-layered line of the little gauge needle of many stitches on the sewing machine.

Description

Multi-needle automatic thread trimming mechanism

Technical Field

The utility model relates to clothing machinery, in particular to a multi-needle automatic thread trimming mechanism.

Background

To the multi-needle machine of many stitches eye booth apart from, traditional thread trimming cutter receives the structure influence, can't arrange in proper order and install the thread trimming position that corresponds, can't realize thread trimming, double-layered line action.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an automatic thread trimmer devices of many needles, the technical scheme who takes is:

the utility model provides an automatic thread trimmer constructs of many needles, includes a plurality of colludes line sword, and is different with prior art, and every colludes line sword and includes that the one end point towards many needles machine faller contracts into the knife tip, and the right side that is close to the knife tip sets up hooked first blade and second blade, and the local thin formation step groove of first blade.

The wire clamping device further comprises a plurality of wire clamping pieces matched with the plurality of wire hooking knives, each wire clamping piece comprises an abutting section abutted against the wire hooking knife, a fixed connection section fixedly connected with the connecting arm and a connection section for connecting the abutting section and the fixed connection section, and the connection section provides abutting pressure for the abutting section; the free end of the abutting section is inwards sunken to form a double tip, and a hollow wire frame is arranged on the right side close to the double tip.

Furthermore, the device also comprises a U-shaped bottom plate which semi-surrounds the left side, the right side and the rear side of the multi-needle machine needle plate and is fixedly connected with the multi-needle machine needle plate, and a fixed knife is fixedly connected with the opening of the U-shaped bottom plate corresponding to the front side of the multi-needle machine needle plate; the left side of the U-shaped bottom plate and the right side of the U-shaped bottom plate are respectively extended outwards and forwards to form a left extension plate and a right extension plate, the rear sections of the left extension plate and the right extension plate are respectively fixedly provided with a left air cylinder and a right air cylinder, cylinder rods of the left air cylinder and the right air cylinder are respectively fixedly connected with a left sliding plate and a right sliding plate which are in sliding fit with the front sections of the left extension plate and the right extension plate, the front ends of the left sliding plate and the right sliding plate are fixedly connected with a thread cutting connecting plate which is connected together, a thread hooking knife is fixedly arranged on the thread cutting connecting plate and corresponds to each needle groove in the multi-needle machine needle plate, and each thread hooking knife and the fixed knife form a shearing pair.

Furthermore, the edges of the front sections of the left extension plate and the right extension plate are fixedly connected with a left baffle and a right baffle respectively so as to limit the left sliding plate and the right sliding plate in the left-right direction; the front section edges of the left extension plate and the right extension plate are fixedly connected with a left pressing plate and a right pressing plate respectively, and the left pressing plate and the right pressing plate are abutted to the upper surfaces of the left sliding plate and the right sliding plate respectively to limit the left sliding plate and the right sliding plate in the up-down direction.

Furthermore, the front ends of the left extending plate and the right extending plate are fixedly connected with connecting arms which connect the left extending plate and the right extending plate together, the lower surface of each connecting arm and the position corresponding to each thread hooking cutter are respectively and fixedly provided with a thread clamping piece and a pressing piece, the thread clamping piece is abutted to the thread hooking cutters, and the pressing pieces are abutted to the thread clamping pieces.

Furthermore, the pressing sheet comprises a straight line section fixedly connected with the connecting arm and a bending section connected with the straight line section into a whole, and the free end of the bending section is pressed against the wire clamping sheet to provide auxiliary pressing force for the wire clamping sheet.

Compared with the prior art, the utility model discloses can be applied to many needle machines, realize the automatic trimming of many needle machines and/or the double-layered line of many needle eyes small gauge needle on the sewing machine.

Drawings

Fig. 1 is a schematic view of a structure of a conventional 13-needle machine needle plate.

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

Fig. 3 is a schematic view of fig. 2 from another perspective.

Fig. 4 is a schematic structural view of a U-shaped bottom plate according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of the thread hooking knife according to the embodiment of the present invention.

Fig. 6 is a schematic structural view of the wire clamping piece according to the embodiment of the present invention.

Fig. 7 is a schematic structural view of a pressing sheet according to an embodiment of the present invention.

Fig. 8 is a schematic structural view of the matching relationship between the thread hooking knife, the thread clamping piece and the pressing piece according to the embodiment of the present invention.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" are to be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention is described in detail with reference to the specific embodiments, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure herein. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-8, the 13-pin automatic thread trimming mechanism comprises a U-shaped bottom plate 1 which semi-surrounds three sides of the left side, the right side and the rear side of a 13-pin machine pin plate 100 and is fixedly connected with the 13-pin machine pin plate 100, and a fixed knife 2 is fixedly connected with an opening of the U-shaped bottom plate 1 corresponding to the front side of the 13-pin machine pin plate 100; the left side of U type bottom plate 1, the right side outwards respectively with expand forward and form left extension board 11 and right extension board 12, the back end of left side extension board 11 and right extension board 12 sets firmly left cylinder 13 and right cylinder 14 respectively, the jar pole rigid coupling of left cylinder 13 and right cylinder 14 respectively with left extension board 11 and right extension board 12 anterior segment sliding fit's left slide 6 and right slide 7, the front end rigid coupling of left slide 6 and right slide 7 links together trimming connecting plate 8, on trimming connecting plate 8, every needle groove 101 that corresponds on 13 needle machine fallers 100 sets firmly a hook line sword 5, every hook line sword 5 forms with fixed sword 2 and cuts vice.

The front ends of the left extending plate 11 and the right extending plate 12 are fixedly connected with a connecting arm 15 which connects the left extending plate and the right extending plate together, the lower surface of the connecting arm 15 and the position corresponding to each thread hooking cutter 5 are respectively and fixedly provided with a thread clamping piece 3 and a pressing piece 4, the thread clamping piece 3 is abutted to the thread hooking cutter 5, and the pressing piece 4 is abutted to the thread clamping piece 3.

The thread hooking knife 5 comprises a first cutting edge 52 and a second cutting edge 53 which are tapered towards one end of the 13-needle machine needle plate 100 to form a knife tip 51, the right side close to the knife tip 51 is provided with a hook shape, and the first cutting edge 52 is locally thinned to form a step groove 54.

The wire clamping sheet 3 comprises an abutting section 33 abutted against the wire hooking knife 5, a fixed connection section 34 fixedly connected with the connecting arm 15 and a connection section 35 connecting the abutting section 33 and the fixed connection section 34, and the connection section 35 provides abutting force for the abutting section 33; the free end of the abutting section 33 is recessed inwards to form a double tip 31, and a hollow wire frame 32 is arranged on the right side close to the double tip 31.

The connecting arm 15 is fixedly connected with a straight line section 41 and a bending section 42 which is connected with the straight line section 41 into a whole, and the free end of the bending section 42 presses the wire clamping piece 3 to provide auxiliary pressing force for the wire clamping piece 3. For convenience of explanation, in fig. 8, the thread clamping piece 3 and the pressing piece 4 are hidden above the thread hooking knife 5 in the 2 nd row from the left, and the pressing piece 4 is hidden on the thread clamping piece 3 in the 3 rd row from the left.

The front edges of the left extension plate 11 and the right extension plate 12 are fixedly connected with a left baffle 16 and a right baffle 17 respectively so as to limit the left sliding plate 6 and the right sliding plate 7 in the left-right direction; the front section edges of the left extension plate 11 and the right extension plate 12 are fixedly connected with a left pressing plate 18 and a right pressing plate 19 respectively, and the left pressing plate 18 and the right pressing plate 19 are abutted to the upper surfaces of the left sliding plate 6 and the right sliding plate 7 respectively to limit the left sliding plate 6 and the right sliding plate 7 in the up-down direction.

This embodiment has the collude line sword of step groove and has the thread tension piece of blank line frame through the design, can realize the trimming of many stitches eye booth apart from to drive trimming mechanism through double-cylinder, improve trimming and the stability of double glazing.

The general structure of the present embodiment can be divided into three mechanisms, namely a driving mechanism, a thread trimming mechanism and a thread clamping mechanism.

A driving mechanism: the cylinder pulling rod is fixed with the connecting arm of the thread cutting mechanism, stable air pressure is provided for 2 cylinders through an air source, the air pressure drives the cylinder pulling rod to retract and stretch out, and therefore the whole row of thread hooking cutters on the connecting arm of the thread cutting mechanism are driven to achieve cutter discharging and cutter retracting actions.

A thread trimming mechanism: the wire cutting machine is also divided into two parts, one part is a fixed cutter fixed on the mechanism, the other part is a row of wire hooking cutters fixed on a connecting arm of the wire cutting mechanism, and the two cutters are matched to realize the action of cutting the wire.

The wire clamping mechanism comprises: is composed of a line of wire clamping sheets and pressing sheets fixed on the other connecting arm. The thread clamping sheet is used for clamping threads in cooperation with the thread hooking cutter and has a thread branching function; the pressing sheet is used for pressurizing the thread clamping sheet and the thread hooking knife and adjusting the thread clamping force and the thread cutting interference magnitude.

The action sequence is as follows: when the sewing machine sews to the designated position and needs to cut the thread, the air source provides stable air pressure for the two cylinders, the air pressure pushes the cylinders to make the cylinder pulling rod contract inwards from the original extending state, thereby driving the whole row of thread hooking knives on the thread cutting mechanism to carry out the action of knife withdrawing; after the thread hooking knife of the thread trimming mechanism reaches the designated position, the upper thread is positioned in the first blade of the thread hooking knife, and the bottom thread is positioned in the second blade of the thread hooking knife; at the moment, a reverse air pressure is provided for the 2 cylinders, so that the cylinder pulls the rod to extend outwards, and the thread hooking cutter on the connecting arm of the thread cutting mechanism is provided with the bottom thread and the upper thread to realize the cutter retracting action; in the cutter retracting process, the front end of a thread clamping piece on the thread clamping mechanism firstly guides a thread to move inwards to improve the thread clamping effect, the thread clamping piece firstly clamps the thread on a second cutting edge, the second cutting edge is matched with a thread cutting fixing cutter to cut off a bottom thread, then the thread clamping piece is contacted with a first cutting edge of a thread hooking cutter, and the first cutting edge is matched with the thread cutting fixing cutter to cut off the upper thread. Because there is a blank frame, colludes the first blade front end of line sword and also has the step groove on clamp line piece one side to realize that first blade only cuts the line and can not press from both sides the line, make the facial line deviate from fast.

After the whole action sequence is finished, the upper thread and the bottom thread can be simultaneously cut off on each needle eye of the needle plate, and the bottom thread is ensured to be clamped, and the upper thread is not clamped.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

The invention is not described in detail in the prior art or in the common general knowledge.

Claims

1. The automatic multi-needle thread trimming mechanism comprises a plurality of thread hooking knives (5) and is characterized in that each thread hooking knife (5) comprises a knife tip (51) which is contracted towards one end tip of a needle plate (100) of a multi-needle machine, a first hook-shaped cutting edge (52) and a second hook-shaped cutting edge (53) are arranged on the right side close to the knife tip (51), and a step groove (54) is formed by locally thinning the first cutting edge (52).

2. The automatic multi-needle thread trimming mechanism according to claim 1, further comprising a plurality of thread clamping blades (3) engaged with the plurality of thread hooking knives (5), wherein each thread clamping blade (3) comprises an abutting section (33) abutting against the thread hooking knife (5), a fixed section (34) fixedly connected with the connecting arm (15), and a connecting section (35) connecting the abutting section (33) and the fixed section (34), and the connecting section (35) provides the abutting section (33) with an abutting force; the free end of the abutting section (33) is inwards sunken to form a double tip (31), and a hollow wire frame (32) is arranged on the right side close to the double tip (31).

3. The automatic multi-needle thread trimming mechanism according to claim 1 or 2, further comprising a U-shaped bottom plate (1) which semi-surrounds the left, right and rear sides of the multi-needle machine needle plate (100) and is fixedly connected with the multi-needle machine needle plate (100), and a fixed knife (2) is fixedly connected to the opening of the U-shaped bottom plate (1) corresponding to the front side of the multi-needle machine needle plate (100); the left side and the right side of the U-shaped bottom plate (1) are respectively extended outwards and forwards to form a left extension plate (11) and a right extension plate (12), the rear sections of the left extension plate (11) and the right extension plate (12) are respectively fixedly provided with a left air cylinder (13) and a right air cylinder (14), the cylinder rods of the left air cylinder (13) and the right air cylinder (14) are respectively fixedly connected with a left sliding plate (6) and a right sliding plate (7) which are in sliding fit with the front sections of the left extension plate (11) and the right extension plate (12), the front ends of the left sliding plate (6) and the right sliding plate (7) are fixedly connected with a trimming connecting plate (8) which is connected together, a trimming knife (5) is fixedly arranged on the trimming connecting plate (8) and corresponds to each needle groove (101) on the multi-needle machine needle plate (100), and each trimming knife (5) and the fixed knife (2) form a trimming pair.

4. The automatic multi-needle thread trimming mechanism according to claim 3, wherein the front edges of the left extending plate (11) and the right extending plate (12) are fixedly connected with a left baffle (16) and a right baffle (17) respectively to limit the left sliding plate (6) and the right sliding plate (7) in the left-right direction; the front section edges of the left extension plate (11) and the right extension plate (12) are fixedly connected with a left pressing plate (18) and a right pressing plate (19) respectively, and the left pressing plate (18) and the right pressing plate (19) are abutted to the upper surfaces of the left sliding plate (6) and the right sliding plate (7) respectively to limit the left sliding plate (6) and the right sliding plate (7) in the vertical direction.

5. The automatic multi-needle thread trimming mechanism according to claim 3, wherein the front ends of the left extending plate (11) and the right extending plate (12) are fixedly connected with a connecting arm (15) for connecting the left extending plate and the right extending plate together, the lower surface of the connecting arm (15) and the position corresponding to each thread hooking cutter (5) are respectively and fixedly provided with a thread clamping piece (3) and a pressing piece (4), the thread clamping piece (3) is abutted against the thread hooking cutter (5), and the pressing piece (4) is abutted against the thread clamping piece (3).

6. The automatic multi-needle thread trimming mechanism according to claim 5, wherein the pressing plate (4) comprises a straight section (41) fixedly connected to the connecting arm (15) and a bending section (42) integrally connected to the straight section (41), and the free end of the bending section (42) presses against the thread clamping piece (3) to provide an auxiliary pressing force for the thread clamping piece (3).