CN2405458Y - Engaging device for needle and sprocket of zipper sewing machine - Google Patents

Abstract

The utility model discloses an engaging device for a needle and a sprocket of a zipper sewing machine. Three sewing needles of the two groups of sewing needles of a needle device are abreast assembled, a positioning screw can be used for fixing the two groups of sewing needles in a clamp block, both sides on the upper part of a central sewing needle in the three sewing needles can be burnished, and the inner sides of the left sewing needle and the right sewing needle can be burnished; the rear side of a sewing machine body is provided with six elastic clamp wheels, a proper position of the body is provided with six monofilament inductive switches and an upper feeding rod and a lower feeding rod on the front side of the body and a single feeding rod on the proper position are provided with six thread holes. A set of engaging devices for sprockets are fixed on the rear side of a needle plate, and the sprocket and a cloth tape can be steadily combined through the utility model and can not be separated because of the influence of external force.

Description

The car pin of slide fastener sewing machine and sprocket geared assembly

The utility model relates to a kind of car pin and sprocket geared assembly of slide fastener sewing machine.

The slide fastener sewing machine is the machine with sprocket and strap stitching, now aspect the car needle device, be with two groups of (totally four) car pins with four fare sewings between sprocket and strap, zipper strip section behind the sewing as shown in Figure 1 and Figure 2, it is respectively the sectional drawing of CONCEAL ZIPPER band, general zipper strip, two sprockets 11 are fixed by two fare 13 sewings respectively with strap 12 about disclosing in graphic, though this can reach fixed effect, but after zipper strip 1 long-time the use, very easily be subjected to the external force drawing and make fare 13 fractures, and then sprocket and strap are broken away from.

Secondly, can set up the sprocket geared assembly at present needle plate rear, this device mainly is a pull head,, after the sprocket on two straps enters pull head simultaneously, immediately mesh into single engagement sprocket; Only the dimensions of sprocket is not of uniform size, just must change the sprocket geared assembly when using the sprocket of different size, so the dealer must possess many group sprocket geared assemblies in order to required, thus, not only increases cost, also increases storage space.

The purpose of this utility model provides a kind of convenient and practical, car pin and the sprocket geared assembly that need not change.

The purpose of this utility model is achieved in that a kind of car pin and sprocket geared assembly of slide fastener sewing machine, the front lower place that ties up to the sewing machine body is provided with the car needle device, in the car needle device, be provided with two car pin groups altogether, on board under the car needle device, be provided with the needle plate device in addition, and a sprocket geared assembly is set in the rear of needle plate device, conveying device then is set again after the sprocket geared assembly, it is characterized in that: per car pin group has three suture needles and assembles side by side, and mat location spiral shell etc. is fixed on two car pin groups in the fixture block, the both sides, top of central suture needle are all given and being polished in described three suture needles, and about two suture needles only polished for upper inner, after described three suture needles merge, top can firmly be combined as a whole, and the shank of lower end can make pin hole align cooperation.

The utility model system with two groups of suture needles of car needle device each with three assemblings side by side, and mat location spiral shell all is fixed on two groups of suture needles in the fixture block, the both sides, top with central suture needle in three suture needles are polished, and about two suture needles only polished for the inboard.

At the rear side of sewing machine body the elasticity clip wheel being set up by original four in addition is six, it is six that the monofilament inductive switch at the moderate place of body is set up by former four, and it is six holes that the through wires hole of single the feeding rod of two feeding rods and moderate place up and down of body front side must be set up by four holes.

Secondly, the sprocket geared assembly at the needle plate rear is to be benchmark with the protruding pillow of central authorities, with about two movable sliders come to cooperate and form one as the structure as the pull head, engageable one-tenth one chain tooth row discharge after two single sprockets enter with protruding pillow symmetry.

Advantage of the present utility model is:

1, present sprocket and strap are sewed up by three fares, and be made the combination of zipper strip more firm, not influenced by external force and break away from.

2, by the moving of two slide blocks about the sprocket geared assembly, scalable or dwindle and protruding pillow between spacing, and then can cooperate the sprocket of different size to use, need not to change again the sprocket geared assembly.

3, the cost of minimizing exploitation sprocket geared assembly also need not to increase again but the sprocket geared assemblies of many groups are put in the space.

Whether 4, utilize the single line inductive switch to respond to fare and break or finish using, if meet broken string or when exhausted, but autostop continues the sewing zipper strip to avoid the sewing machine group.

Below in conjunction with specific embodiment the utility model is described further.

Fig. 1 is the sectional drawing of habit formula CONCEAL ZIPPER band.

Fig. 2 is the sectional drawing of the general zipper strip of habit formula.

Fig. 3 is the sectional drawing of the general zipper strip of the utility model.

Fig. 4 is the D structure figure of the utility model slide fastener sewing machine.

Fig. 5 is the three-dimensional exploded view of the utility model car pin group.

Fig. 6 is the combination vertical view of the utility model car pin group.

Fig. 7 is the utility model monofilament induction installation line sending schematic diagram.

Fig. 8 is the utility model monofilament induction installation broken string schematic diagram.

Fig. 9 is the three-dimensional exploded view of the utility model car needle device.

Figure 10 is the utility model car needle device and sprocket geared assembly structural map.

Figure 11 is the utility model sprocket geared assembly structural map.

Figure 12 is the utility model sprocket geared assembly sectional drawing.

As shown in Figure 3, disclosing zipper strip 2 among the figure is general zipper strip (non-CONCEAL ZIPPER bands), and its sprocket 21 is given sewing with strap 22 by three fares 23 and fixes, and this fixed form is more more firm in the fixing mode of two fares than habit formula, also more difficult disengaging.For three fares of energy sewing, the car pin group of the formula of habit must be improved, the structure after it improves is as described later.

As shown in Figure 4, be provided with car needle device 3 in the front lower place of sewing machine body 10, in the car needle device, establish two car pin groups 31 altogether, per car pin group has three car pins 311,312 (as shown in Figure 5) assembled side by side, and mat location spiral shell etc. is fixed on two car pin groups 31 in the fixture block 32, all give with both sides, the top 311a of central suture needle 311 in three suture needles and polishing, and about two suture needles 312 only polished for upper inner 312a, after three car pins merge, its vertical view as shown in Figure 6, at this moment the top of three car pins can firmly be combined as a whole, and the shank 311b of lower end, 312b can make pin hole 311c, 312c aligns cooperation, and this pin hole system line of buying car in installments individually passes.

As shown in Figure 4, for cooperating six car pins of two car pin groups 31, the elasticity clip wheel group 4 of sewing machine body 10 rear sides must be set up by four original clip wheels 41 be that six and the monofilament inductive switch group 5 at sewing machine body 10 moderate places set up by former four induction rods 51 is six, and the through wires hole of the feeding rod 63 at two differing heights feeding rods 61,62 up and down of body 10 front sides and moderate place must to be set up by four holes be six holes, and then guide six fares 101 and be directed in the six car pins of aforementioned two car pin groups 31.Aforementioned monofilament inductive switch group 5 is newer induction installations; it is to be [six induction rods 51 that hang down and establish of sense base 52 cooperations of shape by one; the lower end of induction rod has the line hole line 101 of can buying car in installments and passes (as shown in Figure 7); when fare is guided when advancing; the mat pulling force promotes induction rod 51, and when fare ruptures or be exhausted (as shown in Figure 8), induction rod 51 promptly descends and the bottom of contact induction seat 52 at once; and then produce induction and sewing machine is shut down, treat start again again after the fare installation.

Secondly, as shown in Figure 4, the below of six elasticity clip wheels 41 of sewing machine body 10 also has two elasticity clip wheels 42, the body below also has the monofilament sense group of being made up of two induction metallic rod 71 7 (effect is with monofilament inductive switch group 5) again, board 20 front ends also are provided with a feeding rod 64 etc., these structures all are to be used for guiding other two fares 102 with the bottom surface of sewing at zipper strip, and these a little structures are all knownly should have structure, no longer adds to give unnecessary details in this.

And for example shown in Figure 4, board 20 is provided with a needle plate device 8 under the car needle device 3 of sewing machine body 10, the detail structure of this device such as Fig. 9, shown in Figure 10, the bolster 83, that its preceding guide rod 82, one that is a block needle plate 81, is fixed on the needle plate front end by two-screw 821 respectively is located at needle plate drop-center 811 cover that cover plate 84, on the needle plate inverted draw cut 812 covers on the cover plate 84 and are fixing and be locating piece 86 and the screw 862 that screw 851 that I-shaped pressing plate 85, two be used for fixing pressing plate, two be used for stablizing strap and be formed by combining with two-screw 851.Wherein, the central guide channel 813 of needle plate 81 is used for guiding two sprockets 21 usefulness of advancing, and drop-center 811 is positions that car pin group 31 is used for sewing, this groove can be filled up and fixing with screw 832 by bolster 83, two needle trays 831 that bolster the had pin 31 of then can buying car in installments passes, two disjunctor grooves 841 of cover plate 84 also can offer the car pin and pass again, two of pressing plate 85 central authorities perforation 852 also provide to two groups of car pin groups 31 and pass again, and two straps 22 import and use about 853 of the wide grooves of pressing plate 85 bottom surfaces are to supply; In addition, but locating piece 86 mat slotted hole grooves 861 on needle plate 81, make appropriateness according to the strap 22 of different size and move and adjust, and contain folder strap 22 by breach 863 so that strap enter behind the needle plate 81 can be by correcting, and step by step, do not crawl and do not produce.

In addition, as shown in figure 10, one group of sprocket geared assembly 9, this device is by a pillow 91, about two slide blocks 92, two adjust spiral shell 93 combines, this pillow 91 is that mat two-screw 94 is fixed on the needle plate 81, there is a central protruding pillow 911 (rear end is sharp shape) to can be used to separate two row's sprockets on the pillow, the pillow both sides have screw groove 912 and can adjust spiral shell 93 and be screwed into, adjusting the moderate place of spiral shell has and pushes away in the chase 923 that handle 931 can embed slide block 92 bottom surfaces, can drive slide block 92 when adjusting spiral shell 93 turns moves, and after moving to the location, be fixed on the pillow 91 with screw 95 again, as shown in figure 11, the slotted hole groove 921 of slide block 92 can be adjusted for its displacement, the folder mouth 922 of front end then is to be used to be embedded sprocket 21, the spacing size that folder mouth and central protruding pillow are 911 is to determine according to the specification of sprocket, this spacing forms the irrigation canals and ditches 9A as Y shape, this irrigation canals and ditches structure is promptly as same pull head structure, after two row's sprockets 21 (as shown in figure 12) enter Y shape irrigation canals and ditches 9A simultaneously, promptly mesh into row's sprocket and going out (as shown in Figure 4) out of, and zipper strip 2 is taken with two up and down rollers 301 by the conveying devices 30 at board 20 rears at last.

Claims (7)

1, a kind of car pin of slide fastener sewing machine and sprocket geared assembly, the front lower place that ties up to the sewing machine body is provided with the car needle device, in the car needle device, be provided with two car pin groups altogether, on board under the car needle device, be provided with the needle plate device in addition, and a sprocket geared assembly is set in the rear of needle plate device, conveying device then is set again after the sprocket geared assembly, it is characterized in that: per car pin group has three suture needles and assembles side by side, and mat location spiral shell etc. is fixed on two car pin groups in the fixture block, the both sides, top of central suture needle are all given and being polished in described three suture needles, and about two suture needles only polished for upper inner, after described three suture needles merge, top can firmly be combined as a whole, and the shank of lower end can make pin hole align cooperation.

2, car pin as claimed in claim 1 and sprocket geared assembly, it is characterized in that: it is six that the clip wheel of the elasticity clip wheel group of described sewing machine body rear side is set up for six suture needles that cooperate described two car pin groups, it is six that the induction rod of the monofilament inductive switch group at the moderate place of sewing machine body is set up, and six fares guiding for the benefit of of the through wires hole of the feeding rod at two differing heights feeding rods up and down of body front side and moderate place to set up be six holes.

3, car pin as claimed in claim 1 and sprocket geared assembly, it is characterized in that: the described monofilament inductive switch group that is provided with at the moderate place of sewing machine body, it is by one, and [sense base of shape cooperates six induction rods of establishing that hang down to form, and the lower end of its induction rod has the line hole that the line of can buying car in installments passes.

4, car pin as claimed in claim 1 and sprocket geared assembly is characterized in that: described needle plate device is to be covered that cover plate, on the needle plate inverted draw cut covers on the cover board and fixed and be locating piece and the screw that screw that I-shaped pressing plate, two be used for fixing pressing plate, two be used for stablizing strap with two-screw by the bolster, that the preceding guide rod, that a block needle plate, is fixed on the needle plate front end by two-screw is located at the needle plate drop-center to combine.

5, car pin as claimed in claim 4 and sprocket geared assembly is characterized in that: described block needle plate has two central guide channels that sprocket advances of guiding; Described car pin group is used for the drop-center of sewing position can be filled up by described bolster, and bolster has two needle trays that the pin of can buying car in installments passes; Described cover plate has and offers two grooves that the car pin passes; Described pressing plate central authorities have and offer two perforation that two groups of car pin groups are passed; But the appropriateness of described locating piece mat slotted hole groove doing according to the strap of different size on needle plate moves and adjusts, and the mat breach contains and establishes strap.

6, car pin as claimed in claim 1 and sprocket geared assembly, it is characterized in that: described sprocket geared assembly comprises a pillow, about two slide blocks, two adjust spiral shell combines, described pillow is that the mat two-screw is fixed on the needle plate, there is a rear end to be the central protruding pillow that sharp shape is used for separating two row's sprockets on the described pillow, described pillow both sides have the screw groove can make described adjustment spiral shell be screwed into, the moderate place of described adjustment spiral shell has and pushes away in the chase that handle can embed described slide block bottom surface, driving slide block when the adjustment spiral is moving moves, and after moving to the location, be fixed on the described pillow with screw again, spacing size between folder mouth and central protruding pillow forms the irrigation canals and ditches of a Y shape such as pull head structure according to the specification decision of sprocket.

7, car pin as claimed in claim 6 and sprocket geared assembly is characterized in that: described slide block has can be for the slotted hole groove of its displacement adjustment, and its front end has the folder mouth that is used for the clamping sprocket.

Images