CN105586725A

CN105586725A - Sewing machine

Info

Publication number: CN105586725A
Application number: CN201610160461.4A
Authority: CN
Inventors: 曹卫明
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-21
Filing date: 2016-03-21
Publication date: 2016-05-18
Anticipated expiration: 2036-03-21
Also published as: CN105586725B

Abstract

The invention provides a sewing machine, and belongs to the technical field of sewing. The sewing machine solves the problem that the heating and clamping phenomena are likely to happen on a guiding component between a cutter holder and a machine head of an existing sewing machine. The sewing machine comprises a machine head and a cutter holder located on the lower side of the machine head. A presser bar guiding sleeve is fixedly arranged inside the machine head. A guiding base arranged on the guiding sleeve in a sleeving mode is arranged inside the machine head. A cutter bar is fixedly arranged on the cutter holder. The upper end of the cutter bar penetrates into the machine head and is fixedly connected with the guiding base. According to the sewing machine, it is ensured that the cutter bar does not rotate and a cutter fixed to the cutter holder is operated stably. Lubricating oil for lubricating a needle bar, a presser bar and other components is contained inside the machine head of the sewing machine, obviously, the lubricating oil can also lubricate and cool a gap between the guiding base and the presser bar guiding sleeve and a gap between the cutter bar and the machine head in an auxiliary mode, the sewing machine can be operated at high speed for a long time, and it is still ensured that the guiding base and the cutter bar are operated stably. The advantage that the structure of the sewing machine is simplified is achieved due to the fact that the guiding base achieves guiding through the presser bar guiding sleeve.

Description

Sewing machine

Technical field

The invention belongs to stitching process field, particularly relate to a kind of sewing machine.

Background technology

Spin in process in clothes processing and family, cloth needs first trimming, flush joint processing again.Along with social development, someone has proposed the sewing machine with trimming function, as Chinese patent literary compositionThe sewing machine (application publication number: CN103710889A) and the applicant that offer record propose seamThe machine (application publication number: CN104562466A) of threading. The Cutter apron of above-mentioned two kinds of sewing machines withBetween head by the guide rail connection of leading, because the rotating speed of sewing machine is higher, i.e. Cutter apronVery fast along guide rail reciprocating motion, very easily generation part heating stuck phenomenon, even causesScrap to structure, thereby exist and affect production efficiency and guide frame is low service lifeProblem.

Summary of the invention

The present invention proposes a kind of sewing machine, how the technical problem to be solved in the present invention isImprove the guide frame stability in use of Cutter apron.

The technical problem that will solve of the present invention can realize by following technical proposal: thisSewing machine comprises head and is positioned at the Cutter apron of head downside, is fixed with presser bar in headFairlead; In head, be provided with the guide holder being set on fairlead; On Cutter apron, be fixed withOne undercut knife bar, the upper end of cutter bar penetrates in head and is fixedly connected with guide holder.

Compared with prior art, the structure of this sewing machine still can ensure that cutter bar is not effectivelyRotation, ensures to be fixed on cutting knife on Cutter apron stable. Tool in the head of sewing machineBe useful on the lubricating oil of lubricated shank, presser bar and miscellaneous part, obviously this lubricating oil alsoCan moisten gap between guide holder and presser bar fairlead and between cutter bar and headSlide and auxiliary heat dissipation, realize sewing machine high speed and long-play and still ensure guide holder and cutKnife bar stably moves. Guide holder utilizes presser bar fairlead guiding to have simplification sewing machineThe advantage of structure.

Brief description of the drawings

Fig. 1 is the structural representation that this sewing machine is faced end face.

Fig. 2 is the sectional structure schematic diagram of this sewing machine.

In figure, 1, head; 2, presser bar; 3, presser bar fairlead; 4, cutter bar;5, cutter driving bar; 6, Cutter apron; 7, shank; 8, axle sleeve; 9, guide holder; 10,The first bolt; 11, the second bolt; 12, clutch; 13, spring.

Detailed description of the invention

Below specific embodiments of the invention by reference to the accompanying drawings, to technical side of the present inventionCase is further described, but the present invention is not limited to these embodiment.

As shown in Figure 1, this sewing machine comprises head 1, presser bar fairlead 3, cutter bar4, cutter driving bar 5 and Cutter apron 6. Presser bar fairlead 3, cutter bar 4 and cutting knifeDrive rod 5 longitudinally sets gradually along head 1 from motion end to end.

In head 1, have installation cavity, presser bar fairlead 3 is positioned at the installation cavity of head 1In, presser bar fairlead 3 vertically arranges, the lower end of presser bar fairlead 3 and head 1Be fixedly connected with. In presser bar fairlead 3, be equipped with a presser bar 2, presser bar 2Lower end is fixed with the presser feet that is positioned at head 1 downside. One side of presser bar fairlead 3 is provided withShank 7, the upper-end part of driving of shank 7 in the installation cavity of head 1, the lower end of shank 7Be fixed with eedle.

Cutter bar 4 be arranged in parallel with presser bar 2, and cutter bar 4 is through the downside of head 1Wall, the upper-end part of driving of cutter bar 4 is in the installation cavity of head 1. In order to improve cutter bar4 kinematic dexterities and kinetic stability, sheathed axle sleeve 8 on cutter bar 4, axle sleeve 8Be fixed on head 1.

In the installation cavity of head 1, be provided with guide holder 9, on guide holder 9, have pilot hole,The first connecting hole of be arrangeding in parallel with pilot hole, with first shrinking that the first connecting hole connectsMouthful and with vertically disposed the first bolt 10 holes of the first contraction mouth. Specifically, presser barFairlead 3 penetrates in the pilot hole of guide holder 9, and cutter bar 4 penetrates of guide holder 9In one connecting hole, be connected with the first bolt 10 at the first bolt 10 hole internal threads, pass throughScrew the first bolt 10 and force the first contraction mouth to shrink, realize cutter bar 4 and guide holder 9Be fixedly connected with; It is more stable that this structure had both made cutter bar 4 move, and makes again cutter bar 4 simultaneouslyDo not rotate. Cutter bar 4 is eccentric rod, when assembling, ensures by screwing cutter bar 4Pilot hole and first on spacing and guide holder 9 between cutter bar 4 and presser bar fairlead 3Between connecting hole, spacing adapts, and ensures cutter bar 4 elevating movements flexibly and stablizes; ChangeYan Zhi, cutter bar 4 adopts eccentric rod can effectively reduce processing and the installation of all partsPrecision, thus have simple in structure, easy to assembly, the advantage of low cost of manufacture.

The lower end of cutter bar 4 is fixed with Cutter apron 6; Specifically, tool on Cutter apron 6Have the second connecting hole, with second connecting hole connect the second contraction mouth and with the second contraction mouthVertically disposed the second bolt 11 holes; The lower end of cutter bar 4 penetrates second of Cutter apron 6Connecting hole, can ensure that by rotary cutting tool rest 6 cutting knife is parallel with cutting blade on needle plate, ensuresCut cloth efficiency. Be connected with the second bolt 11 at the second bolt 11 hole internal threads, adjust toBehind position, force the second contraction mouth to shrink by screwing the second bolt 11, realize cutter bar 4Be fixedly connected with Cutter apron 6.

The upper-end part of driving of cutter driving bar 5 in the installation cavity of head 1, cutter driving bar5 lower end be fixed with can with Cutter apron 6 in conjunction with or the clutch 12 that separates. Cutter apron 6On have clutch hole, in the trip(ping) lever of clutch 12 penetrates clutch hole time, cutter drivingBar 5 drives Cutter apron 6 and cutter bar 4 liftings to move back and forth. When the clutch of clutch 12Bar and Cutter apron 6 are in the time of released state, and Cutter apron 6 and cutter bar 4 keep motionless;Affect the feeding of cloth wheel for fear of cutting knife, on cutter bar 4, be arranged with a spring 13,One end of spring 13 and guide holder 9 lean, the other end of spring 13 and head 1Lower wall leans; When the trip(ping) lever of clutch 12 and Cutter apron 6 are in released stateTime, cutter bar 4 automatically moves up and ensures that cutting knife drives under the elastic force effect of spring 13When lever 5 reciprocal elevating movement, clutch 12 can not touched with Cutter apron 6.

Claims

1. a sewing machine, comprises head (1) and is positioned at the cutting knife of head (1) downsideSeat (6), is fixed with presser bar fairlead (3) in head (1); It is characterized in that instituteState and in head (1), be provided with the guide holder (9) being set on fairlead; Cutter apron (6)On be fixed with a undercut knife bar (4), the upper end of cutter bar (4) penetrates in head (1)And be fixedly connected with guide holder (9).

2. sewing machine according to claim 1, is characterized in that, described cutter bar(4) upper sheathed axle sleeve (8), axle sleeve (8) is fixed on head (1).

3. sewing machine according to claim 1, is characterized in that, described cutter bar(4) be eccentric rod.

4. sewing machine according to claim 1, is characterized in that, described guide holder(9) the first connecting hole of having pilot hole on, be arranged in parallel with pilot hole, with first connectConnect hole connect the first contraction mouth and with vertically disposed the first bolt of the first contraction mouth (10)Hole; Presser bar fairlead (3) penetrates in the pilot hole of guide holder (9), cutter bar (4)Penetrate in the first connecting hole of guide holder (9), connect at the first bolt (10) hole internal threadBe connected to the first bolt (10), force the first contraction mouth to be received by screwing the first bolt (10)Contracting, realizes cutter bar (4) and is fixedly connected with guide holder (9).

5. sewing machine according to claim 1, is characterized in that, described cutter bar(4) on, be arranged with a spring (13), one end of spring (13) and guide holder (9)Lean, the lower wall of the other end of spring (13) and head (1) leans.

6. sewing machine according to claim 1, is characterized in that, described Cutter apron(6) the second contraction mouth that there is the second connecting hole on, connect with the second connecting hole and with theVertically disposed the second bolts of two contraction mouths (11) hole; The lower end of cutter bar (4) penetratesThe second connecting hole of Cutter apron (6); The second bolt (11) hole internal thread is connected with secondBolt (11), forces the second contraction mouth to shrink by screwing the second bolt (11), realizesCutter bar (4) is fixedly connected with Cutter apron (6).

7. according to the sewing machine described in any one in claim 1 to 6, its feature existsIn, this sewing machine also comprises cutter driving bar (5), presser bar fairlead (3), cutting knifeBar (4) and cutter driving bar (5) along head (1) longitudinally from motion end to end successivelyArrange.

8. sewing machine according to claim 7, is characterized in that, described Cutter apron(6) on, have clutch hole; The upper-end part of driving of cutter driving bar (5) is in head (1)In installation cavity, the lower end of cutter driving bar (5) be fixed with can with Cutter apron (6) combinationOr the clutch (12) separating.