CN201209201Y

CN201209201Y - Thread-fastening and loosing apparatus for sewing machines

Info

Publication number: CN201209201Y
Application number: CNU2008200745692U
Authority: CN
Inventors: 谢佳成
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-29
Filing date: 2008-04-29
Publication date: 2009-03-18
Anticipated expiration: 2018-04-29

Abstract

The utility model provides a thread raising and loosening device of a sewing machine, which comprises a driving valve which contains a valve rod, the first end of the valve rod being in pin joint with a control link rod of a thread-cutting device; a swing arm, the middle section of which being provided with a slotted hole, a pin being inserted in the slotted hole, the pin being fixed on a fixed component, so that a first end of the swing arm being in tandem driven by the valve rod of a driving valve, and a long slotted hole being drilled at the second end of the swing arm; a prodder pin protruding out from the first end of a driving rod, the prodder pin being inserted in the long slotted hole at the second end of the swing arm in normal times, and the second end of the driving rod being provided with a rod hole; a connecting rod inserted in the body of the sewing machine, the first end of the connecting rod being fixedly arranged in the rod hole at the second end of the driving rod; a prodder component, the first end of which being fixedly connected at the second rod end of the connecting rod, a prodder pin being arranged on the prodder component near the first end and being arranged in a linkage slot of a thread-loosing sliding board of the sewing machine in normal times, a linkage block being pivoted on the prodder component near the second end, and the linkage block being fixedly connected with a thread-raising sliding rod of the sewing machine. The utility model enables the sewing operation to be automatically and rapidly implemented so as to lower the production cost.

Description

Sewing machines raise line, thread-loosening device

Technical field

The utility model relates to a kind of Sewing machines, and what relate in particular to a kind of Sewing machines raises line, thread-loosening device.

Background technology

Present Sewing machines structure, when Sewing machines work at the end, need earlier the suture that is folded on the tensioning device be relaxed, just the suture that is positioned at the suture position outwards can be pulled out the step that laggard row is cut off, just can carry out next sewing work.

General Sewing machines, relaxing of its tensioning device, be with manual mode, dialling changes one group of arm, make this group arm place the thread tension releasing slide on the Sewing machines upwards to pass with sliding in linkage, the plate of thread tension releasing slide is inserted between two clamps of tensioning device, and two clamps are relatively supported, reach the purpose of loose ends.Yet such operating type is not only very not convenient in the use, and very time-consuming, and does not meet a large amount of production demands, and therefore improved necessity arranged.

The utility model content

Technical problem underlying to be solved in the utility model is, overcome the above-mentioned defective that prior art exists, and a kind of Sewing machines is provided raise line, thread-loosening device, by the utility model the action thread cutting device in, also upwards drive this thread tension releasing slide in the lump, the purpose that reaches loose ends and raise line can carry out sewing operation, to reduce production costs automatically apace.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of Sewing machines raise line, thread-loosening device, it is characterized in that it comprises: driver's valve, contain a valve rod, its first end pivot connects the control link of a thread cutting device; Swing arm, its stage casing is equipped with a slotted eye, and in being placed through with a trunnion, this trunnion is fixed on the fixed component, and first end that makes this swing arm is linked by the valve rod of this driver's valve, and wears a long slot bore in second end of this swing arm; Drive rod, its first distal process is provided with a finger, and makes this finger be placed through at ordinary times in the long slot bore of second end of this swing arm, and second end of this drive rod is provided with a bar hole; Connecting rod is placed through in the sewing machine body, and its first end is fixedly arranged in the bar hole of second end of this drive rod; Stir element, its first end is fixed on second rod end of this connecting rod, stirs nearly first end of element in this and is provided with one and stirs pin, is arranged in the interlock groove of the thread tension releasing slide of Sewing machines at ordinary times, in addition be pivoted with the interlock piece in nearly second end of this group kind of thread elements, what this interlock piece was connected Sewing machines raises the line slide bar.

Aforesaid Sewing machines raise line, thread-loosening device, wherein driver's valve is meant electromagnetic valve.

Aforesaid Sewing machines raise line, thread-loosening device, wherein driver's valve is meant gas, hydraulic cylinder.

Aforesaid Sewing machines raise line, thread-loosening device, wherein driver's valve is to be installed on the body of Sewing machines with a fixed mount.

Aforesaid Sewing machines raise line, thread-loosening device, the valve rod of driver's valve wherein, its first end is to connect a body of rod abreast with contiguous block, make the slippage stably in a fixed mount of this body of rod, the outside of this contiguous block, an affixed pivot seat connects the control link of this thread cutting device with pivot.

Aforesaid Sewing machines raise line, thread-loosening device, between the body of rod of driver's valve and this fixed mount, be to shore a spring at ordinary times wherein.

Aforesaid Sewing machines raise line, thread-loosening device, wherein fixed component is a plate body, is installed on the fixed mount.

Aforesaid Sewing machines raise line, thread-loosening device, wherein fixed component is the part of sewing machine body.

Aforesaid Sewing machines raise line, thread-loosening device, the body of rod that valve rod linked of driver's valve wherein is affixed one to be connected arm-tie, this linking pulling board pivot connects first end of this swing arm.

The beneficial effects of the utility model are, in the action thread cutting device, also upwards drive this thread tension releasing slide by the utility model in the lump, and the purpose that reaches loose ends and raise line can carry out sewing operation, to reduce production costs automatically apace.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 shown in Figure 1ly removes thread cutting device, thread tension releasing slide, raises the schematic perspective view behind the line slide bar.

Fig. 3 is the schematic perspective view at another visual angle of the utility model shown in Figure 2.

Fig. 4 is the utility model in the schematic diagram of loose ends state not.

Fig. 5 is that the utility model shown in Figure 4 removes thread tension releasing slide, raises the schematic diagram behind the line slide bar.

Fig. 6 is the schematic diagram of the utility model under the loose ends state.

Fig. 7 is that the utility model shown in Figure 6 removes thread tension releasing slide, raises the schematic diagram behind the line slide bar.

The number in the figure explanation:

10 driver's valve 11a, first end, 11 valve rods

12 contiguous blocks, 13 fixed mounts, 14 bodies of rod

141 are connected arm-tie 15 pivot seats 16 springs

20 thread cutting devices, 21 control links 22 collude the line bar

30 swing arm 30b, the second end 30a, first end

31 slotted eyes, 311 trunnions, 32 long slot bores

40 fixed components, 50 drive rods, 51 fingers

52 bar holes, 60 connecting rods 70 are stirred element

The 70a first end 70b second end 71 is stirred pin

72 interlock pieces, 80 thread tension releasing slides, 81 interlock grooves

82 inserted sheets, 83 tensioning devices 90 are raised the line slide bar

91 raise line bar L suture

The specific embodiment

See also Fig. 1 to shown in Figure 7, the utility model is raised line, thread-loosening device relevant for a kind of Sewing machines, and comprising: driver's valve 10 is installed on the body [not shown in the figures] of Sewing machines, contain a valve rod 11, its first end 11a pivot connects the control link 21 of a thread cutting device 20; Swing arm 30, its stage casing are equipped with a slotted eye 31, and in being placed through with a trunnion 311, and make this trunnion 311 be fixed on the fixed component 40, in addition, make the first end 30a of this swing arm 30, valve rod 11 by this driver's valve 10 is linked, and wears a long slot bore 32 in the second end 30b of this swing arm 30; Drive rod 50, its first distal process is provided with a finger 51, and is placed through when making this finger 51 flat in the long slot bore 32 of second end of this swing arm 30, and second end of this drive rod 50 is provided with a bar hole 52; Connecting rod 60 is placed through in the sewing machine body, and its first end is fixedly arranged in the bar hole 52 of second end of this drive rod 50; Stir element 70, its first end 70a is fixed on second rod end of this connecting rod 60, stirring element 70 nearly first end 70a in this is provided with one and stirs pin 71, be arranged in the interlock groove 81 of the thread tension releasing slide 80 of Sewing machines at ordinary times, in addition be pivoted with interlock piece 72 in this group kind of thread elements 70 nearly second end 70b, what make that this interlock piece 72 is connected Sewing machines raises line slide bar 90; When making these driver's valve 10 these valve rods 11 of action in this way, except that action thread cutting device 20, also link simultaneously and move on the thread tension releasing slide 80 of Sewing machines, make each inserted sheet 82 on this thread tension releasing slide 80, insert accordingly in the tensioning device 83 respectively, and strut each tensioning device 83 of Sewing machines, raise line bar 91 on the line slide bar 90 by raising, with the suture L segment distance of kicking up, carry out in order to the tangent line work of thread cutting device 20.

Above-mentioned thread cutting device 20, thread tension releasing slide 80, tensioning device 83, raising line slide bar 90, be conventional device and structure, is not the utility model patent target, so will not give unnecessary details.

Above-mentioned driver's valve 10 can be taken from electromagnetic valve or pneumatic/hydraulic cylinder, and the utility model is not limited.

Above-mentioned driver's valve 10 is with a fixed mount 13, is installed on the body of Sewing machines, or is installed on other auxiliary fixed mount, and the utility model also will not be from limit.

The valve rod 11 of this driver's valve 10, its first end is with contiguous block 12, connects a body of rod 14 abreast, and make this body of rod 14 in this fixed mount 13, slippage stably, and in the outside of this contiguous block 12, an affixed pivot seat 15 connects the control link 21 of this thread cutting device 20 with pivot.13 of the above-mentioned body of rod 14 and this fixed mounts are shored a spring 16 at ordinary times, and what make in linkage when making this spring 16 flat that this valve rod 11 is positioned at this thread cutting device 20 of control colludes line bar 22 in withdrawal, promptly cuts off the position of suture.

This fixed component 40 as shown in Figure 1 to Figure 3, is a plate body, be installed on the fixed mount 13, maybe can make this fixed component 40 be the part of sewing machine body with modifying, make this trunnion 311 pass the slotted eye 31 in stage casing of swing arm 30 after, directly be locked on the sewing machine body.

The body of rod 14 that the valve rod 11 of this driver's valve 10 is linked is affixed linking arm-ties 141, makes these linking arm-tie 141 pivots connect the first end 30a of this swing arm 30.

Sewing machines that the utility model discloses raise line, thread-loosening device, when when carrying out the tangent line operation, as Fig. 1, Fig. 6, shown in Figure 7, this driver's valve 10 is to drive this valve rod 11, to the retraction of B direction, at this moment, thread cutting device 20 collude the needling position [shown in the dotted line of Fig. 1] that line bar 22 promptly protrudes outwardly to suture needle, in this simultaneously, the body of rod 14 that this valve rod 11 is connected, the linking arm-tie 141 that is connected of its end, also spur the first end 30a of this swing arm 30 in the lump, making this swing arm 30 is the center swing with trunnion 311, the second end 30b of swing arm 30 is swung according to the R1 direction, and stir this finger 51 by slotted hole groove 32, make the center of this drive rod 50 according to connecting rod 60, rotate towards the R2 direction, this connecting rod 60 that promptly links rotates towards the R2 direction, make be positioned at connecting rod 60 far-ends stir element 70, it is stirred pin 71 and can order about on the thread tension releasing slide 80 that is positioned at Sewing machines and move, and the inserted sheet 82 on this thread tension releasing slide 80 is inserted in the tensioning device 83, and this stirs the interlock piece 72 of element 70, the raising on the line slide bar 90 of this Sewing machines of also linking simultaneously moved, and raise line bar 91 on the line slide bar 90 by raising, with the suture segment distance of kicking up, this moment, this driver's valve 10 just stopped action, and involution is to Fig. 1, Fig. 4, the solid line position of Fig. 5, and will colluding line bar 22, returns the control link 21 that orders about this thread cutting device 20, and the suture L that in the lump suture L is retracted cuts off [the segment distance because the suture L that has finished loose ends and will be positioned at tensioning device 83 zones kicks up, therefore can make suture L be colluded line bar 22 smoothly colludes back], also return thread tension releasing slide 80 simultaneously and raise line slide bar 90, make suture L strained by tensioning device 83, finish a work cycle.

Sewing machines that the utility model discloses raise line, thread-loosening device, have following architectural feature and advantage:

1. simple in structure, need not to change the original design of Sewing machines, promptly can utilize in the existing sewing machine, more than advance the thread tension releasing slide of row loose ends, the utility model be directly installed on the old slit just can, need not to change different thread tension releasing slides.

2. make the operation of thread cutting device and loose ends, can a linkage.

3. significantly reduce the activity duration of operator's loose ends, to increase productivity, to reduce cost.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

A Sewing machines raise line, thread-loosening device, it is characterized in that it comprises:

Driver's valve contains a valve rod, and its first end pivot connects the control link of a thread cutting device; Swing arm, its stage casing is equipped with a slotted eye, and in being placed through with a trunnion, this trunnion is fixed on the fixed component, and first end that makes this swing arm is linked by the valve rod of this driver's valve, and wears a long slot bore in second end of this swing arm;

Drive rod, its first distal process is provided with a finger, and makes this finger be placed through at ordinary times in the long slot bore of second end of this swing arm, and second end of this drive rod is provided with a bar hole;

Connecting rod is placed through in the sewing machine body, and its first end is fixedly arranged in the bar hole of second end of this drive rod;

Stir element, its first end is fixed on second rod end of this connecting rod, stirs nearly first end of element in this and is provided with one and stirs pin, is arranged in the interlock groove of the thread tension releasing slide of Sewing machines at ordinary times, in addition be pivoted with the interlock piece in nearly second end of this group kind of thread elements, what this interlock piece was connected Sewing machines raises the line slide bar.
Sewing machines according to claim 1 raise line, thread-loosening device, it is characterized in that: described driver's valve is meant electromagnetic valve.
Sewing machines according to claim 1 raise line, thread-loosening device, it is characterized in that: described driver's valve is meant pneumatic/hydraulic cylinder.
Sewing machines according to claim 1 raise line, thread-loosening device, it is characterized in that: described driver's valve is to be installed on the body of Sewing machines with a fixed mount.
5. Sewing machines according to claim 1 raises line, thread-loosening device, it is characterized in that: the valve rod of described driver's valve, its first end is to connect a body of rod abreast with contiguous block, make the slippage stably in a fixed mount of this body of rod, the outside of this contiguous block, an affixed pivot seat connects the control link of this thread cutting device with pivot.
Sewing machines according to claim 5 raise line, thread-loosening device, it is characterized in that: between the body of rod of described driver's valve and this fixed mount, be to shore a spring at ordinary times.
Sewing machines according to claim 1 raise line, thread-loosening device, it is characterized in that: described fixed component is a plate body, is installed on the fixed mount.
Sewing machines according to claim 1 raise line, thread-loosening device, it is characterized in that: described fixed component is the part of sewing machine body.
Sewing machines according to claim 5 raise line, thread-loosening device, it is characterized in that: the body of rod that valve rod linked of described driver's valve is affixed one to be connected arm-tie, and this linking pulling board pivot connects first end of this swing arm.