CN204570206U - A kind of needle bar stroke guiding mechanism and overlock machine - Google Patents
A kind of needle bar stroke guiding mechanism and overlock machine Download PDFInfo
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- CN204570206U CN204570206U CN201520056615.6U CN201520056615U CN204570206U CN 204570206 U CN204570206 U CN 204570206U CN 201520056615 U CN201520056615 U CN 201520056615U CN 204570206 U CN204570206 U CN 204570206U
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- countershaft
- connecting pin
- needle bar
- chute
- main shaft
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Abstract
The utility model provides a kind of needle bar stroke guiding mechanism and overlock machine, belongs to sewing machine technique field, can solve how to increase work efficiency when the metering needle throw of lever and cost-saving.This needle bar stroke guiding mechanism comprises countershaft, main shaft, countershaft crank, main shaft connecting rod, described countershaft and described main shaft distribute up and down, and be arranged in parallel, described countershaft crank fixed cover is located on described countershaft, and described countershaft crank is provided with the connecting pin of axially parallel and described countershaft away from one end of described countershaft, one end of described main shaft connecting rod is rotatably connected on described connecting pin, the other end is fixedly connected on described main shaft, the link position of described connecting pin and described countershaft crank is adjustable, by changing the link position of described connecting pin on described countershaft crank, to change the centre-to-centre spacing of described connecting pin and described countershaft.The utility model is for regulating the needle bar stroke of overlock machine.
Description
Technical field
The utility model belongs to sewing machine technique field, particularly relates to a kind of needle bar stroke guiding mechanism and overlock machine.
Background technology
At present, general Sewing machines comprises flat seam machine, overlock machine, chain type sewing machine, flat seaming machine.Wherein overlock machine is mainly used in bound edge, to prevent the edge of sewing from fluffing, is also applicable to sew up T-shirt, sportswear, underwear, the fabric such as knitting simultaneously.Overlock machine mainly comprises casing, distribution is up and down provided with and the countershaft be parallel to each other and main shaft in casing, be connected with countershaft crank by main shaft connecting rod between main shaft and countershaft, countershaft crank is fixed on countershaft, one end of main shaft connecting rod is rotatably connected on countershaft crank, the other end is rotatably connected on main shaft, one end of main shaft connects with drive motors, and an end of countershaft is connected with shank by needle bar crank mechanism rod.During the motion of drive motors driving main shaft, main shaft drives main shaft connecting rod swing, and countershaft crank drives countershaft to rotate under the driving of main shaft connecting rod, and then drives shank to move up and down by needle bar crank mechanism.
The stroke that shank moves up and down is relevant with the thickness of tailoring cloth, if make thick cloth, then needs longer shift motion, if desired makes grenadine, then need shorter shift motion.The shift motion of shank is relevant with the rotational angle of countershaft, and the rotational angle of countershaft is then determined by the centre-to-centre spacing between countershaft, main shaft connecting rod.And due to the centre-to-centre spacing between countershaft and main shaft connecting rod be changeless, therefore when needing the cloth making different-thickness, always need the casing of overlock machine to open, change countershaft crank and corresponding assembly, to change the centre-to-centre spacing between main shaft connecting rod and countershaft.So not only operationally time and effort consuming, reduces operating efficiency, and constantly changes assembly, make cost also higher.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of needle bar stroke guiding mechanism and overlock machine, can increase work efficiency preferably, cost-saving.
The purpose of this utility model realizes by following technical proposal:
The utility model provides a kind of needle bar stroke guiding mechanism, comprise countershaft, main shaft, countershaft crank, main shaft connecting rod, described countershaft and described main shaft distribute up and down, and be arranged in parallel, one end of described main shaft connecting rod is fixedly connected with described main shaft, the other end is rotatably connected to connecting pin, the centerline parallel of described connecting pin is in the center line of described countershaft, described countershaft crank comprises sleeve, described sleeve fixed cover is located on described countershaft, and a side arm is stretched out at the two ends of described sleeve in the same way respectively, each described side arm is provided with chute, described connecting pin is slidably arranged in described chute, and locked by locking nut, when described connecting pin slides in described chute, the centre-to-centre spacing of described connecting pin and described countershaft increases thereupon or reduces.
When needing the cloth making a certain thickness, only need to make connecting pin along slide, simultaneously main shaft connecting rod under the drive of connecting pin around main axis, and the centre-to-centre spacing of connecting pin and countershaft changes thereupon, when connecting pin slides into a certain position, lock with locking nut, by the center distance regulation of connecting pin and countershaft to desired distance, namely the centre-to-centre spacing of countershaft and main shaft connecting rod is changed, thus change the rotational angle of countershaft, realize the adjustment of needle bar stroke, can avoid like this changing countershaft crank and corresponding assembly, not only operationally time saving and energy saving, increase work efficiency, and it is cost-saving preferably, improve economy.
In above-mentioned needle bar stroke guiding mechanism, the one end of stretching out from chute described in one of them in described connecting pin has the protuberance circumferentially formed, and the diameter of described protuberance is greater than the width of this chute; Locked from one end that chute described in another stretches out by described locking nut in described connecting pin.Make connecting pin form a similar bolt part with nut head like this, connecting pin to stretch into from one of them chute away from one end of its protuberance and stretches out from another chute, and the one end of stretching out is fixed by locking nut, thus is fixed on countershaft crank by connecting pin.
In above-mentioned needle bar stroke guiding mechanism, all connected by described locking nut after described chute is stretched out at the two ends of described connecting pin.One end of such connecting pin to be stretched out and the part of stretching out is fixed by locking nut from one of them chute, and the other end of connecting pin to stretch out and the part of stretching out is fixed by locking nut from another one chute, thus realizes the fixing of connecting pin.
In above-mentioned needle bar stroke guiding mechanism, described connecting pin is positioned at described chute and identical with the width of this chute along the size in this trough width direction.Can make the slip that connecting pin is stable in chute like this, and after locking nut locking, connecting pin there will not be loosening.
In above-mentioned needle bar stroke guiding mechanism, be positioned at described chute in described connecting pin and both ends of the surface along this trough width direction are plane.This is that connecting pin and chute occur relative turn right, thus affect the rotational angle of countershaft in order to prevent main shaft connecting rod when rotating.
The utility model embodiment still provides a kind of overlock machine, comprise the needle bar stroke guiding mechanism in casing, shank, needle bar bracket, shank connecting rod, needle bar crank and above-mentioned either type, the sheathed described needle bar crank in one end of described countershaft, described needle bar crank is connected with described shank link rotatable, described shank connecting rod and described needle bar bracket are rotationally connected, and described swinging mounting supports described shank.
When needing the cloth making different-thickness, only need after opening casing to change the link position of connecting pin on countershaft crank, just the centre-to-centre spacing of connecting pin and described countershaft can be changed, because main shaft connecting rod is rotatably connected on connecting pin, therefore can change the centre-to-centre spacing between main shaft connecting rod and countershaft, and then the shift motion of shank can be changed.Avoid like this changing countershaft crank and corresponding assembly, not only operationally time saving and energy saving, increase work efficiency, and also cost-saving preferably, improve economy.
Compared with prior art, the beneficial effects of the utility model: by adjusting the link position of main shaft connecting rod and countershaft crank, to adjust the centre-to-centre spacing of main shaft connecting rod and countershaft, realize the adjustment of needle bar stroke, operating efficiency is high, and cost is lower.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the needle bar stroke guiding mechanism that the utility model embodiment provides;
Fig. 2 is the decomposing schematic representation of the needle bar stroke guiding mechanism that the utility model embodiment provides;
Fig. 3 is the schematic diagram of the overlock machine that the utility model embodiment provides;
Fig. 4 is the inner schematic diagram with needle bar stroke guiding mechanism of overlock machine that the utility model embodiment provides.
Reference numeral:
1-needle bar stroke guiding mechanism, 10-main shaft, 11-main shaft connecting rod, 110,111-through hole, 12-connecting pin, 120-protuberance, 121,122-plane, 13-locking nut, 14-countershaft crank, 140-sleeve, 141-side arm, 142-chute, 15-countershaft, 2-needle bar mechanism, 20-needle bar crank, 21-shank connecting rod, between 22-shank, 23-shank, 3-casing.
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.
As shown in Figure 1, the needle bar stroke guiding mechanism 1 that the utility model provides comprises main shaft 10, countershaft 15, countershaft crank 14, main shaft connecting rod 11, countershaft 15 and main shaft about 10 distribute, and be arranged in parallel, as shown in Figure 2, the two ends of main shaft connecting rod 11 offer through hole 110 and through hole 111 respectively, wherein through hole 111 turning set of one end is on main shaft 10, through hole 110 turning set of the other end is on connecting pin 12, the center line of connecting pin 12 and the centerline parallel of countershaft 15, two side arms 141 of countershaft crank 14 offer chute 142 respectively, one of them chute 142 is stretched in wherein one end of connecting pin 12, the other end extend in another chute 142, such connecting pin 12 can slidably reciprocate in chute 142, when connecting pin 12 slip rests on a certain position, by locking nut 13, connecting pin 12 is locked, when connecting pin 12 slides in chute 142, connecting pin 12 changes with the centre-to-centre spacing of countershaft 15 thereupon.
When resting on the one end away from countershaft 15 in chute 142 after connecting pin 12 slides, needle bar stroke is bigger than normal, is applicable to making thick cloth; When resting on after connecting pin 12 slides in chute 142 when one end of countershaft 15, needle bar stroke is less than normal, is applicable to making grenadine.Therefore avoid changing countershaft crank and corresponding assembly, not only operationally time saving and energy saving, increase work efficiency, and also cost-saving preferably, improve economy.
The structure of above-mentioned connecting pin 12 is similar bolt parts with nut head, concrete structure as shown in Figure 2, the one end of stretching out from the chute 142 of one of them side arm 141 in connecting pin 12 has the protuberance 120 extended to form to surrounding, and the diameter of this protuberance 120 is greater than the width of this chute 142 and this protuberance 120 is resisted against on the surface of another side arm 141 dorsad in this side arm 141; The one end of stretching out from the chute 142 of another side arm 141 in connecting pin 12 has external screw thread, and locking nut 13 is tightened in this external screw thread place, just connecting pin 12 can be fixed on countershaft crank 14.When the link position of the connecting pin 12 adjusted, can be realized the slip of connecting pin 12 by the protuberance 120 holding connecting pin 12, operation is simply more convenient like this, increases work efficiency further.
In addition, above-mentioned connecting pin 12 also can arrange protuberance 0, and namely all there is external screw thread at the two ends of connecting pin, when its two ends are respectively after corresponding chute 142 stretches out, is locked by locking nut 13, realizes the fixing of connecting pin.
As the preferred version of the utility model embodiment, connecting pin 12 is positioned at chute 142 and size along chute 142 width (i.e. above-below direction shown in figure) is identical with the width of chute 142, the slip that connecting pin 12 is stable in chute 142 can be made like this, and after locking nut 13 is locked, connecting pin 12 there will not be loosening.
Be fixed on after on countershaft crank 14 at connecting pin 12, also to prevent connecting pin 12 and chute 142 occur relative turn right.This is because when connecting pin 12 relatively rotates with chute 142, locking nut 13 may produce loosening, thus cause connecting pin 12 to slide in chute 142, change the centre-to-centre spacing of connecting pin 12 and countershaft 15, and then affect the rotational angle of countershaft 15, the stroke of shank is made not reach default effect, so be plane 121 and 122 (shown in Fig. 2) in connecting pin 12 with chute about 142 two sides, such formation spline structure, to avoid relatively rotating at main shaft connecting rod 11 connecting pin 12 and chute 142 when moving.
The link position that the centre-to-centre spacing that the mode that above-mentioned employing connecting pin 11 slides changes main shaft connecting rod 11 and countershaft 15 in fact also can be regarded as by changing connecting pin 11 and countershaft crank 14 changes centre-to-centre spacing, therefore realize the purpose of this utility model and can also adopt the scheme that multiple connecting hole is set on countershaft crank 14, concrete structure is: on two side arms 141 of countershaft crank 14, arrange row's connecting hole respectively, two row's connecting holes are symmetrical, the center line connecting direction often arranging connecting hole is identical with the rotation direction of main shaft connecting rod 11, connecting pin 12 is connected with connecting hole by locking nut 13.When needs adjustment needle bar stroke, wherein a pair relative connecting hole can be selected, by locking nut 13, connecting pin 12 is fixed on this relative connecting hole.When connecting pin 12 is connected to the connecting hole away from countershaft 15, needle bar stroke is bigger than normal, is applicable to making thicker cloth; When connecting pin 12 is connected to the connecting hole near countershaft 15, needle bar stroke is less than normal, is applicable to making thinner cloth.
The structure that the structure of the connecting pin 12 in this scheme leads to above-mentioned connecting pin 12 is the same, can refer to the structure of the connecting pin 12 shown in Fig. 2, have from one end of a connecting hole one of them side arm 141 protuberance 120 circumferentially formed in this connecting pin 12, the diameter of this protuberance 120 is greater than the diameter of this connecting hole and this protuberance 120 is resisted against on the surface of another side arm 141 dorsad in this side arm 141; The one end of stretching out from the connecting hole another side arm 141 in connecting pin 12 has external screw thread, and locking nut 13 is tightened in this external screw thread place, just connecting pin 12 can be fixed on countershaft crank 14.
Connecting pin 12 in the program also can arrange protuberance 120, and namely all there is external screw thread at the two ends of connecting pin 12, when its two ends are respectively after corresponding connecting hole stretches out, is locked by locking nut 13, realizes the fixing of connecting pin.
In order to prevent connecting pin 12 and connecting hole from relatively rotating, also needing to arrange spline structure herein, namely connecting hole at least having a plane, is also plane with the face of this plane contact in connecting pin 12.
The utility model embodiment still provides a kind of overlock machine, shown in 3 and Fig. 4, comprise the needle bar stroke guiding mechanism 1 of casing 3, needle bar mechanism 2 and above-mentioned arbitrary form, wherein needle bar mechanism 2 comprises shank 23, needle bar bracket 22, shank connecting rod 21, needle bar crank 20, needle bar crank 20 is fixedly entangled in one end of countershaft 15, needle bar crank 20 and shank connecting rod 21 are rotationally connected, and shank connecting rod 21 and needle bar bracket 22 are rotationally connected, needle bar bracket 22 supporting needle rod 23.When needing the cloth making different-thickness, only need after opening casing to change the link position of connecting pin 12 on countershaft crank 14, easy to operate, and cost is lower.
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.
Claims (6)
1. a needle bar stroke guiding mechanism, comprise countershaft (15), main shaft (10), countershaft crank (14), main shaft connecting rod (11), described countershaft (15) and described main shaft (10) distribute up and down, and be arranged in parallel, one end of described main shaft connecting rod (11) is fixedly connected with described main shaft (10), the other end is rotatably connected to connecting pin (12), the centerline parallel of described connecting pin (12) is in the center line of described countershaft (15), described countershaft crank (14) comprises sleeve (140), described sleeve (140) fixed cover is located on described countershaft (14), and a side arm (141) is stretched out at the two ends of described sleeve (140) in the same way respectively, it is characterized in that, each described side arm (141) is provided with chute (142), described connecting pin (12) is slidably arranged in described chute (142), and by locking nut (13) locking, when described connecting pin (12) slides in described chute (142), described connecting pin (12) increases thereupon with the centre-to-centre spacing of described countershaft (15) or reduces.
2. needle bar stroke guiding mechanism according to claim 1, it is characterized in that, the one end of stretching out from chute described in one of them (142) in described connecting pin (12) has the protuberance (120) circumferentially formed, and the diameter of described protuberance (120) is greater than the width of this chute (142); Lock from one end that chute described in another (142) stretches out by described locking nut (13) in described connecting pin (12).
3. needle bar stroke guiding mechanism according to claim 1, is characterized in that, is all connected by locking nut after described chute (142) is stretched out at the two ends of described connecting pin (12).
4. the needle bar stroke guiding mechanism according to Claims 2 or 3, it is characterized in that, described connecting pin (12) is positioned at described chute (142) and size along this chute (142) width is identical with the width of this chute (142).
5. needle bar stroke guiding mechanism according to claim 4, it is characterized in that, be positioned at described chute (142) in described connecting pin (12) and both ends of the surface along this chute (142) width are plane (121 and 122).
6. an overlock machine, it is characterized in that, comprise casing (3), shank (23), needle bar bracket (22), shank connecting rod (21), needle bar crank (20) and the needle bar stroke guiding mechanism (1) described in any one of claim 1-5, the sheathed described needle bar crank (20) in one end of described countershaft (15), described needle bar crank (20) and described shank connecting rod (21) are rotationally connected, described shank connecting rod (21) and described needle bar bracket (22) are rotationally connected, described swinging mounting (22) supports described shank (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520056615.6U CN204570206U (en) | 2015-01-27 | 2015-01-27 | A kind of needle bar stroke guiding mechanism and overlock machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520056615.6U CN204570206U (en) | 2015-01-27 | 2015-01-27 | A kind of needle bar stroke guiding mechanism and overlock machine |
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| CN204570206U true CN204570206U (en) | 2015-08-19 |
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| CN201520056615.6U Active CN204570206U (en) | 2015-01-27 | 2015-01-27 | A kind of needle bar stroke guiding mechanism and overlock machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983662A (en) * | 2019-12-23 | 2020-04-10 | 拓卡奔马机电科技有限公司 | Cloth-needling mechanism and sewing equipment with same |
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2015
- 2015-01-27 CN CN201520056615.6U patent/CN204570206U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983662A (en) * | 2019-12-23 | 2020-04-10 | 拓卡奔马机电科技有限公司 | Cloth-needling mechanism and sewing equipment with same |
| CN110983662B (en) * | 2019-12-23 | 2021-10-29 | 拓卡奔马机电科技有限公司 | Cloth-needling mechanism and sewing equipment with same |
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