A kind of clamping-line structure of Sewing machines
Technical field
The utility model belongs to technical field of sewing equipment, relates to a kind of Sewing machines, particularly a kind of clamping-line structure of Sewing machines.
Background technology
Sewing is the important procedure of the production processing such as clothes clothing, and Sewing machines is the visual plant in sewing technology, uses one or more sewing thread, and sewing is formed one or more stitchings, makes one or more layers sewing interweave or unite by a seam.The principle of making of Sewing machines has been coordinated by the upper thread of upside and the bottom line of downside.Because different sewing is different with the coefficient of friction of upper thread, the tension force of upper thread also can change, need the tension force or the elasticity that are adjusted upper thread by clamping-line structure, make the upper thread of upside in process normally after crossing line plate and tension disk, then arrive needle position by thread take-up tension lever.
China's patent (notification number: CN201459386U; The day for announcing: 2010-05-12) disclose a kind of wire-clamping device of Sewing machines, the wire-clamping device of this Sewing machines is arranged on the casing of Sewing machines, comprise the tension seat with crossed beam trunking and the clamp with top splenium, tension seat and clamp hinged, top splenium is corresponding with above-mentioned crossed beam trunking, is provided with a swing mechanism that also can realize line ball or loose ends that can control clamp and swing relative to tension seat between tension seat and clamp.
Wire-clamping device in above-mentioned patent is just provided with a tension disk in the casing following side of Sewing machines, upper thread enter from outside after through upper clamp again solderless wrapped connection on this tension disk, then needle position is arrived by thread take-up tension lever, upper thread only carries out tension adjustment by a tension disk, its poor stability, adjustable range has certain limitation; In addition, the tension disk in this patent adopts solenoid actuated, comparatively large to the casing internal requirements of installation space of Sewing machines, is unfavorable for the layout of Sewing machines internal structure.
Summary of the invention
The problems referred to above that the utility model exists for existing technology, provide a kind of clamping-line structure of Sewing machines, technical problem to be solved in the utility model is: how to improve the adjustability of upper thread rate of tension in sewing process and strengthen the stability of tension force of facial suture.
The purpose of this utility model realizes by following technical proposal:
A kind of clamping-line structure of Sewing machines, Sewing machines comprises casing, described casing was provided with line plate, it is characterized in that, described clamping-line structure comprises the clamp be arranged on casing, tension disk one and tension disk two, described tension disk one is positioned at the below of described clamp, and described tension disk two is crossed between line plate and described clamp described.
Its principle is as follows: usual mistake on line plate offers cable-through hole, in Sewing machines sewing process, first upper thread out passes cable-through hole from the coil of wire, upper thread is fixed spacing by the cable-through hole crossed on line plate, then upper thread extends to clamping-line structure, the first solderless wrapped connection of upper thread of line plate was passed through on tension disk two in the technical program, tension disk two pairs of upper threads clamp, upper thread is more successively through clamp, tension disk one and thread take-up tension lever reach needle position, by tension disk one, tension disk two and clamp repeatedly clamp upper thread, ensure the stable of upper thread, utilize the regulating action of tension disk one and tension disk two can adjust the tension force of upper thread as required simultaneously, and complete the task of very line.
In the clamping-line structure of above-mentioned Sewing machines, described tension disk two and described line plate of crossing are positioned at same level height, and described clamp is positioned at the oblique below of described tension disk two.Such layout can facilitate the threading of upper thread to arrange, prevents mutual interference, and ensures the stable of tension force of facial suture.
In the clamping-line structure of above-mentioned Sewing machines, described tension disk one is positioned at immediately below described clamp, and described line plate, tension disk two and the clamp crossed is positioned at same level height.
In the clamping-line structure of above-mentioned Sewing machines, described tension disk two comprises the mount pin be installed on casing, described mount pin is arranged with clamp clip one, clamp clip two and adjustment sheet, side and the described clamp clip two-phase of described clamp clip one recline, opposite side and the described adjustment sheet of described clamp clip one lean, the end of described mount pin is provided with against cap, describedly be provided with spring against between cap and adjustment sheet, described spring housing is located on described mount pin and the two ends of described spring and acts on respectively against on cap and adjustment sheet.Make adjustment sheet have trend to clamp clip one movement by the elastic force effect of spring, thus clamp clip one and clamp clip two are tightly reclined, stable clamping upper thread also makes the tension force that upper thread keeps certain.
In the clamping-line structure of above-mentioned Sewing machines, described tension disk two also comprises the straight line cylinder that described adjustment sheet can be driven to move axially along described mount pin.Adding tension disk two in the technical program, when regulating tension disk two, being driven by straight line cylinder, reliable and stable, straight line cylinder takes up room little simultaneously, is convenient to install in casing fix.
In the clamping-line structure of above-mentioned Sewing machines, in axial direction through hole is offered in described mount pin, described mount pin sidewall offers the opening be connected with described through hole, there is in the middle part of described adjustment sheet the connection strap through described opening, slide in described through hole and be inserted with power transmission shaft, one end of described power transmission shaft is connected with described connection strap, and the other end of described power transmission shaft can lean with the output shaft end of described straight line cylinder.The output shaft action of straight line cylinder promotes power transmission shaft, and power transmission shaft slides and drives adjustment sheet to move to the direction deviating from clamp clip one in the through hole of mount pin, overcomes the elastic force of spring, thus completes loose ends action.
In the clamping-line structure of above-mentioned Sewing machines, described casing is installed with pin, described clamp is installed on described pin, described pin is arranged with the clamp clip three and clamp clip four that mutually recline.Upper thread, between clamp clip three and clamp clip four, can steadily turn to, and can clamp upper thread simultaneously, keeps the tension force that upper thread is suitable.
In the clamping-line structure of above-mentioned Sewing machines, described clamp is in the form of annular discs, the edge of described clamp has the support bar of the strip extended radially outwardly along clamp, the end of described support bar has flange, described flange offers through wires hole, and the center line of described through wires hole is towards the joint place of described clamp clip three and clamp clip four.Upper thread arrives clamp through through wires hole, keeps the direction of upper thread to stablize, prevents from coming off between clamp clip three and clamp clip four.
In the clamping-line structure of above-mentioned Sewing machines, described tension disk one comprises clamp clip five bonded to each other and clamp clip six, and the binding face of described clamp clip one and clamp clip two, clamp clip three and the binding face of clamp clip four and the binding face of clamp clip five and clamp clip six are all positioned on same perpendicular.Such upper thread is between tension disk one, clamp clip and tension disk two during solderless wrapped connection, more smooth and easy, prevents the wear and rupture of upper thread.
Compared with prior art, in the utility model, tool has the following advantages:
1, tension disk two is added in this clamping-line structure, repeatedly upper thread is clamped by tension disk one, tension disk two and clamp, ensure the stable of upper thread, utilize the regulating action of tension disk one and tension disk two can adjust the tension force of upper thread as required simultaneously, and complete the task of very line.
2, the tension disk two in this clamping-line structure is driven by straight line cylinder, takes up room little, is convenient to install in casing fix.
Accompanying drawing explanation
Fig. 1 is the perspective view of head of sewing machine.
Fig. 2 is the partial enlargement structural representation of head of sewing machine.
Fig. 3 is the internal structure schematic diagram of head of sewing machine.
Fig. 4 is the partial enlargement structural representation in Fig. 3.
Fig. 5 is the perspective view of the tension disk two in this clamping-line structure.
Fig. 6 is the sectional structure schematic diagram of the tension disk two in this clamping-line structure.
In figure, 1, casing; 2, line plate is crossed; 21, cable-through hole; 3, clamp; 31, support bar; 32, flange; 33, through wires hole; 4, tension disk one; 41, clamp clip five; 42, clamp clip six; 5, tension disk two; 51, mount pin; 51a, through hole; 51b, opening; 52, clamp clip one; 53, clamp clip two; 54, adjustment sheet; 54a, connection strap; 55, against cap; 56, spring; 57, straight line cylinder; 58, power transmission shaft; 6, pin; 7, clamp clip three; 8, clamp clip four.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Embodiment one
As shown in Figures 1 to 4, Sewing machines comprises casing 1, casing 1 was provided with line plate 2, clamping-line structure comprises the clamp 3 be arranged on casing 1, tension disk 1 and tension disk 25, tension disk 1 is positioned at the below of clamp 3, tension disk 25 is excessively between line plate 2 and clamp 3, and tension disk 25 and excessively line plate 2 are positioned at same level height, and clamp 3 is positioned at the oblique below of tension disk 25.Cross on line plate 2 and offer cable-through hole 21, in Sewing machines sewing process, first upper thread out passes cable-through hole 21 from the coil of wire, be fixed spacing by the cable-through hole 21 pairs of upper threads crossed on line plate 2, then upper thread extends to clamping-line structure, by crossing the upper thread elder generation solderless wrapped connection of line plate 2 on tension disk 25, tension disk 25 pairs of upper threads clamp, upper thread is more successively through clamp 3, tension disk 1 and thread take-up tension lever reach needle position, by tension disk 1, tension disk 25 and clamp clamp upper thread for more than 3 time, ensure the stable of upper thread, utilize the regulating action of tension disk 1 and tension disk 25 can adjust the tension force of upper thread as required simultaneously, and complete the task of very line.
As shown in Figure 5 and Figure 6, tension disk 25 comprises the mount pin 51 be installed on casing 1, mount pin 51 is arranged with clamp clip 1, clamp clip 2 53 and adjustment sheet 54, the side of clamp clip 1 reclines mutually with clamp clip 2 53, opposite side and the adjustment sheet 54 of clamp clip 1 lean, the end of mount pin 51 is provided with against cap 55, spring 56 is provided with against between cap 55 and adjustment sheet 54, spring 56 is set on the mount pin 51 and two ends of spring 56 and acts on against on cap 55 and adjustment sheet 54 respectively, tension disk 25 also comprises the straight line cylinder 57 that adjustment sheet 54 can be driven to move axially along mount pin 51, through hole 51a is in axial direction offered in mount pin 51, mount pin 51 sidewall offers the opening 51b be connected with through hole 51a, there is in the middle part of adjustment sheet 54 the connection strap 54a through opening 51b, slide in through hole 51a and be inserted with power transmission shaft 58, one end of power transmission shaft 58 is connected with connection strap 54a, and the other end of power transmission shaft 58 can lean with the output shaft end of straight line cylinder 57.Make adjustment sheet 54 have trend to clamp clip 1 movement by the elastic force effect of spring 56, thus clamp clip 1 and clamp clip 2 53 are tightly reclined, stable clamping upper thread also makes upper thread keep certain tension force and the free degree; The output shaft action of straight line cylinder 57 can promote power transmission shaft 58, and power transmission shaft 58 slides and drives adjustment sheet 54 to move to the direction deviating from clamp clip 1 in the through hole 51a of mount pin 51, thus the elastic force overcoming spring 56 completes loose ends action; Driven by straight line cylinder 57 in the present embodiment, reliable and stable, straight line cylinder 57 takes up room little simultaneously, is convenient to install in casing 1 fix.
As shown in Figure 4, casing 1 is installed with pin 6, clamp 3 is installed on pin 6, pin 6 is arranged with the clamp clip 37 and clamp clip 48 that mutually recline; Clamp 3 is in the form of annular discs, the edge of clamp 3 has the support bar 31 of the strip extended radially outwardly along clamp 3, the end of support bar 31 has flange 32, flange 32 offers through wires hole 33, and the center line of through wires hole 33 is towards the joint place of clamp clip 37 and clamp clip 48.Tension disk 1 comprises clamp clip 5 41 bonded to each other and clamp clip 6 42, and the binding face of clamp clip 1 and clamp clip 2 53, clamp clip 37 and the binding face of clamp clip 48 and the binding face of clamp clip 5 41 and clamp clip 6 42 are all positioned on same perpendicular.Upper thread arrives clamp 3 through through wires hole 33, ensure that the direction of upper thread is stablized, prevent upper thread from coming off between clamp clip 37 and clamp clip 48, upper thread can steadily be turned to by clamp clip 37 and clamp clip 48 clamping, clamping and smooth and easy twitch can be carried out to upper thread simultaneously, keep the tension force that upper thread is suitable; Upper thread between tension disk 1, clamp 3 and tension disk 25 during solderless wrapped connection, smooth and easyly to pass through, and prevents the wear and rupture of upper thread.
Embodiment two
The present embodiment is roughly the same with embodiment one, and difference is, in the present embodiment, tension disk 1 is positioned at immediately below clamp 3, crosses line plate 2, tension disk 25 and clamp 3 and is positioned on same level height.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ 1 herein, casing; 2, line plate is crossed; 21, cable-through hole; 3, clamp; 31, support bar; 32, flange; 33, through wires hole; 4, tension disk one; 41, clamp clip five; 42, clamp clip six; 5, tension disk two; 51, mount pin; 51a, through hole; 51b, opening; 52, clamp clip one; 53, clamp clip two; 54, adjustment sheet; 54a, connection strap; 55, against cap; 56, spring; 57, straight line cylinder; 58, power transmission shaft; 6, pin; 7, clamp clip three; 8, clamp clip fourth class term, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.