CN209741393U - Lower roller feeding reversing mechanism of sewing machine - Google Patents
Lower roller feeding reversing mechanism of sewing machine Download PDFInfo
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- CN209741393U CN209741393U CN201920181924.4U CN201920181924U CN209741393U CN 209741393 U CN209741393 U CN 209741393U CN 201920181924 U CN201920181924 U CN 201920181924U CN 209741393 U CN209741393 U CN 209741393U
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Abstract
The utility model discloses a sewing machine lower roller pay-off reversing mechanism, the positive and negative motion is done to the driving shaft, drive joint spare swing, the unidirectional rotation is done to the one-way afforestation of pull rod pulling on the joint spare, thereby drive first driven shaft and rotate, first bevel gear on the first driven shaft drives gear revolve, the gear drives the second driven shaft and rotates, second driven shaft upper end is feeding mechanism, this moment, feeding mechanism forward pay-off, open backstitch battery iron, turn over the board lower extreme and be held by backstitch battery iron and turn, turn over the board and wind the point upset that articulates on vertical board, turn over board upper end pulling first driven shaft, thereby with first bevel gear and gear separation, second bevel gear and gear engagement, after second bevel gear and gear engagement, second driven shaft antiport, thereby it reverses to drive feeding mechanism, accomplish the backstitch. Utility model, increase a sleeve pipe in one-way bacitrarines, the sleeve pipe is synchronous with one-way bacitrarines, relies on the cooperation of slot hole and locating pin, does not have the condition that one-way bacitrarines skidded.
Description
The technical field is as follows:
The utility model relates to a sewing machine technical field, concretely relates to sewing machine bottom roller pay-off reversing mechanism.
Background art:
In general, a sewing machine needs to perform backstitch during operation, a small workpiece needs to be backstitched only by turning over the workpiece, but a large or thick workpiece cannot be turned upside down. The conventional industrial sewing machine is provided with a backstitch device which utilizes a series of gear changing devices to change a conveying system and related systems to carry out backstitch.
The utility model has the following contents:
the utility model aims at providing a sewing machine bottom roller pay-off reversing mechanism.
The utility model discloses the technical problem that will solve adopts following technical scheme to realize:
a feeding reversing mechanism of a lower roller of a sewing machine, which comprises,
the electromagnetic device comprises a rack, a power supply and a control system, wherein the rack comprises a bottom frame, a shaft fixing frame arranged below the bottom frame, an electromagnet bracket and a vertical frame arranged on the bottom frame;
the driving shaft is arranged in the shaft fixing frame, one end of the driving shaft is connected with a power source, the other end of the driving shaft is connected with a clamping piece, a pull rod is movably connected to the clamping piece, the other end of the pull rod is connected to the unidirectional bearing, and the driving shaft does forward and reverse rotation motion;
The unidirectional bearing bush is sleeved on the first driven shaft, the first driven shaft is positioned in the shaft fixing frame, and the first driven shaft is provided with a first bevel gear and a second bevel gear which are opposite;
the second driven shaft is positioned in the vertical frame and penetrates through the underframe, a gear is arranged at the lower end of the second driven shaft and positioned between the first bevel gear and the second bevel gear, and the gear is meshed with the first bevel gear or the second bevel gear;
and the upper end of the second driven shaft is connected with the feeding mechanism.
The first bevel gear and the second bevel gear are fixed on the first driven shaft.
The feeding mechanism comprises a third bevel gear, a feeding wheel and a feeding wheel fixing part, wherein the feeding wheel fixing part is fixed to the top end of the vertical frame, a bearing is arranged on the feeding wheel fixing part, the third bevel gear is fixed to the top end of the second driven shaft, a shaft is arranged at the center of the feeding wheel and penetrates through the bearing, teeth are arranged on one side of the feeding wheel, and the third bevel gear is meshed with the teeth on the side wall of the feeding wheel.
The reversing component comprises a backstitch electromagnet, a turnover plate and a shaft sleeve; the backstitch electromagnet is fixed on the electromagnet bracket, a vertical plate is arranged at the front end of the shaft fixing frame, a turning plate is hinged on the vertical plate, the turning plate is hinged on the vertical plate, one end of the first driven shaft penetrates through the vertical plate and is sleeved with a shaft sleeve, an annular sliding groove is formed in the shaft sleeve, a sliding block is arranged at the upper end of the turning plate and is clamped in the annular sliding groove, and the backstitch electromagnet is hinged at the lower end of the turning plate;
the driving shaft rotates forwards and backwards to drive the clamping piece to swing, the pull rod on the clamping piece pulls the one-way bearing forest to rotate in one way, so that the first driven shaft is driven to rotate, the first bevel gear on the first driven shaft drives the gear to rotate, the gear drives the second driven shaft to rotate, the upper end of the second driven shaft is provided with the feeding mechanism, at the moment, the feeding mechanism feeds materials in the forward direction, the backstitch battery iron is opened, the lower end of the turning plate is pulled to turn by the backstitch battery iron, the turning plate overturns around a point hinged on the vertical plate, the upper end of the turning plate pulls the first driven shaft, so that the first bevel gear is separated from the gear, the second bevel gear is meshed with the gear, and after the second bevel gear is meshed with the gear, the second driven shaft rotates.
the one-way bearing forest internal fixation cover has the sleeve pipe, is equipped with horizontal slot hole on the sleeve pipe, be equipped with the locating pin on the first driven shaft, the locating pin is located horizontal slot hole.
the sleeve is provided with a groove, the inner wall of the unidirectional bearing is provided with a convex block, and the convex block is clamped in the groove to finish the fixed connection of the sleeve and the unidirectional bearing.
The utility model discloses a another kind of structure does: a feeding reversing mechanism of a lower roller of a sewing machine, which comprises,
The electromagnetic device comprises a rack, a power supply and a control system, wherein the rack comprises a bottom frame, a shaft fixing frame arranged below the bottom frame, an electromagnet bracket and a vertical frame arranged on the bottom frame;
the driving shaft is arranged in the driving shaft fixing frame, one end of the driving shaft is connected with a power source, the other end of the driving shaft is connected with a clamping piece, a pull rod is movably connected to the clamping piece, the other end of the pull rod is connected to the one-way bearing, and the driving shaft does forward and reverse rotation motion;
the unidirectional bearing bush is sleeved on the first driven shaft, the first driven shaft is positioned in the shaft fixing frame, and the first driven shaft is provided with a first bevel gear and a second bevel gear which are opposite; the first driven shaft is a hollow shaft, an inner shaft is arranged in the hollow shaft, an annular groove is formed in one end of the inner shaft, and the rear section of the inner shaft is connected with the reversing component; the inner walls of the first bevel gear and the second bevel gear are provided with inner grooves, the inner grooves are axial grooves, the front end of the hollow shaft is provided with two holes, steel balls are placed in the holes, the two steel balls respectively correspond to the inner grooves of the first bevel gear and the second bevel gear, and the distance between the two steel balls is at least 1.5 times shorter than the groove width of the annular groove;
The second driven shaft is positioned in the vertical frame and penetrates through the underframe, a gear is arranged at the lower end of the second driven shaft and positioned between the first bevel gear and the second bevel gear, and the gear is meshed with the first bevel gear and the second bevel gear;
and the upper end of the second driven shaft is connected with the feeding mechanism.
the first bevel gear and the second bevel gear are sleeved on the first driven shaft in a clearance fit mode.
the feeding mechanism comprises a third bevel gear, a feeding wheel and a feeding wheel fixing part, wherein the feeding wheel fixing part is fixed to the top end of the vertical frame, a bearing is arranged on the feeding wheel fixing part, the third bevel gear is fixed to the top end of the second driven shaft, a shaft is arranged at the center of the feeding wheel and penetrates through the bearing, teeth are arranged on one side of the feeding wheel, and the third bevel gear is meshed with the teeth on the side wall of the feeding wheel.
the reversing component comprises a backstitch electromagnet, a turnover plate and a shaft sleeve; the backstitch electromagnet is fixed on the electromagnet bracket, a vertical plate is arranged at the front end of the shaft fixing frame, a turning plate is hinged on the vertical plate, the other end of the inner shaft penetrates through the vertical plate and is sleeved with a shaft sleeve, an annular chute is arranged on the shaft sleeve, a sliding block is arranged at the upper end of the turning plate and is clamped in the annular chute, and the backstitch electromagnet is hinged at the lower end of the turning plate;
wherein the driving shaft makes positive and negative rotation movement to drive the clamping piece to swing, a pull rod on the clamping piece pulls the unidirectional bearing bush to make unidirectional rotation, thereby driving the first driven shaft to rotate, a tooth on the first driven shaft drives a gear to rotate (one steel ball is positioned outside the annular groove, the other steel ball is positioned in the annular groove, at the moment, the steel ball positioned in the annular groove is propped against an inner groove of the bevel gear to drive the bevel gear to rotate, the other steel ball bevel gear is positioned in the annular groove and separated from an inner groove of the other bevel gear, the other bevel gear idles along with the gear), the gear drives the second driven shaft to rotate, the upper end of the second driven shaft is a feeding mechanism, at the moment, the feeding mechanism feeds materials in positive direction, the backstitch battery iron is opened, the lower end of the backstitch battery iron is pulled to turn, the turnover plate turns around a point hinged on the vertical, therefore, the positions of the two steel balls in the inner shaft and the annular groove are changed, the steel balls outside the annular groove fall into the annular groove, the steel balls inside the annular groove rise out of the annular groove, the alternation of the first bevel gear teeth and the second bevel gear teeth is completed, the second driven shaft rotates reversely, and the feeding mechanism is driven to rotate reversely to complete backstitch.
the groove wall of the annular groove is an inclined plane, and the distance between the two steel balls is 2 times shorter than the width of the groove bottom of the annular groove. When guaranteeing that one of them steel ball rises outside the annular groove, another steel ball descends to the annular groove tank bottom, avoids appearing the condition of beating the tooth, simultaneously, a certain moment can appear in 2 times length, and two steel balls are all at the annular groove tank bottom, and two bevel gears park, and gear and bevel gear park after stable, then insert a bevel gear fast, when avoiding appearing the bevel gear along with the gear forward rotation, the steel ball inserts suddenly, and the sudden braking gets into the tooth condition that the direction rotation leads to.
the utility model has the advantages that:
the single-set structure can realize feeding and backstitch, and the power is switched on when needed, so that the method is simple and effective;
In the past, one-way bearing and axle clearance fit, through friction drive axle rotation, one-way bearing and axle clearance are too big, lead to one-way bearing to skid easily, lose the effect, and the clearance undersize, axle back-and-forth movement frictional force is great, easily appears wearing and tearing, the utility model discloses, increase a sleeve pipe in one-way bearing, the sleeve pipe is synchronous with one-way bearing, relies on the cooperation of slot hole and locating pin, does not have the condition that one-way bearing skidded, simultaneously, the locating pin is the back-and-forth movement in the slot hole, accomplishes the alternative cooperation of first bevel gear and second bevel gear;
One of the steel balls is located outside the annular groove, the other steel ball is located inside the annular groove, at the moment, the steel ball located inside the annular groove abuts against the inner groove of the bevel gear to drive the bevel gear to rotate, the bevel gear with the other steel ball is located inside the annular groove and separated from the inner groove of the other bevel gear, and the other bevel gear avoids tooth beating along with idle rotation of the gear.
description of the drawings:
in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts;
FIG. 1 is a schematic sectional view of the structure of embodiment 1 of the present invention in front view;
Fig. 2 is a structural axis measuring and indicating diagram of embodiment 1 of the present invention;
Fig. 3 is a schematic view of the internal structure of the structure of embodiment 1 of the present invention;
FIG. 4 is a schematic view of the inner shaft of the structure of embodiment 1 of the present invention;
Fig. 5 is a structural front view of embodiment 1 of the present invention;
Fig. 6 is a left side view of the structures of embodiment 1 and embodiment 2 of the present invention;
fig. 7 is a schematic front sectional view of the structure of embodiment 2 of the present invention;
fig. 8 is a structural front view of embodiment 2 of the present invention;
fig. 9 is a structural axis measuring and indicating diagram of embodiment 2 of the present invention;
Fig. 10 is an inner shaft measuring view according to embodiment 2 of the present invention;
Fig. 11 is a schematic structural view of a first bevel gear in embodiment 2 of the present invention;
in the figure: 1-a chassis; 2-a shaft fixing frame; 3-electromagnet bracket; 4-a vertical frame; 5-driving shaft; 6-a clamping piece; 7-a pull rod; 8-unidirectional bearing; 9-a first driven shaft; 10-a first bevel gear; 11-a second bevel gear; 12-a second driven shaft; 13-a gear; 14-third bevel gear; 15-a feeding wheel; 16-a fixing member; 17-backstitch electromagnet; 18-a flap; 19-shaft sleeve; 20-vertical plates; 21-an annular chute; 22-a sleeve; 23-transverse slot; 24-a locating pin; 25-inner shaft; 26-an annular groove; 27-an inner groove; 28-well; 29-steel ball.
the specific implementation mode is as follows:
to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected to the inside of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
FIGS. 1-6, example 1: a feeding reversing mechanism of a lower roller of a sewing machine, which comprises,
the device comprises a rack, a positioning device and a control device, wherein the rack comprises an underframe 1, a shaft fixing frame 2 arranged below the underframe, an electromagnet bracket 3 and a vertical frame 4 arranged on the underframe;
The driving shaft 5 is arranged in the shaft fixing frame, one end of the driving shaft is connected with a power source, the other end of the driving shaft is connected with a clamping piece 6, a pull rod 7 is movably connected onto the clamping piece, the other end of the pull rod is connected onto a one-way bearing 8, and the driving shaft does forward and reverse rotation motion;
the one-way bearing is sleeved on a first driven shaft 9, the first driven shaft is positioned in a shaft fixing frame, and a first bevel gear 10 and a second bevel gear 11 which are opposite to each other are arranged on the first driven shaft; the first bevel gear and the second bevel gear are fixed on the first driven shaft.
the second driven shaft 12 is positioned in the vertical frame and penetrates through the underframe, a gear 13 is arranged at the lower end of the second driven shaft and is positioned between the first bevel gear and the second bevel gear, and the gear is meshed with the first bevel gear or the second bevel gear;
the upper end of the second driven shaft is connected with the feeding mechanism.
The feeding mechanism comprises a third bevel gear 14, a feeding wheel 15 and a feeding wheel fixing part 16, wherein the feeding wheel fixing part is fixed to the top end of the vertical frame, a bearing is arranged on the feeding wheel fixing part, the third bevel gear is fixed to the top end of the second driven shaft, a shaft is arranged at the center of the feeding wheel and penetrates through the bearing, teeth are arranged on one side of the feeding wheel, and the third bevel gear is meshed with the teeth on the side wall of the feeding wheel.
the reversing component comprises a backstitch electromagnet 17, a turning plate 18 and a shaft sleeve 19; the backstitch electromagnet is fixed on the electromagnet bracket, the front end of the shaft fixing frame is provided with a vertical plate 20, the vertical plate is hinged with a turning plate, the turning plate is hinged on the vertical plate, one end of a first driven shaft penetrates through the vertical plate and is sleeved with a shaft sleeve, the shaft sleeve is provided with an annular chute 21, the upper end of the turning plate is provided with a sliding block clamped in the annular chute, and the backstitch electromagnet is hinged at the lower end of the turning plate;
the driving shaft rotates forwards and backwards to drive the clamping piece to swing, the pull rod on the clamping piece pulls the one-way bearing forest to rotate in one way, so that the first driven shaft is driven to rotate, the first bevel gear on the first driven shaft drives the gear to rotate, the gear drives the second driven shaft to rotate, the upper end of the second driven shaft is provided with the feeding mechanism, at the moment, the feeding mechanism feeds materials in the forward direction, the backstitch battery iron is opened, the lower end of the turning plate is pulled to turn by the backstitch battery iron, the turning plate overturns around a point hinged on the vertical plate, the upper end of the turning plate pulls the first driven shaft, so that the first bevel gear is separated from the gear, the second bevel gear is meshed with the gear, and after the second bevel gear is meshed with the gear, the second driven shaft rotates.
the sleeve 22 is fixedly sleeved in the unidirectional bearing, the sleeve is provided with a transverse long hole 23, the first driven shaft is provided with a positioning pin 24, and the positioning pin is positioned in the transverse long hole.
The sleeve is provided with a groove, the inner wall of the unidirectional bearing is provided with a convex block, and the convex block is clamped in the groove to finish the fixed connection of the sleeve and the unidirectional bearing.
As in fig. 6-10, example 2: a feeding reversing mechanism of a lower roller of a sewing machine, which comprises,
the device comprises a rack, a lifting mechanism and a lifting mechanism, wherein the rack comprises an underframe 1, a shaft fixing frame 2 arranged below the underframe, an electromagnet bracket 3 and a vertical frame 4 arranged on the underframe;
the driving shaft 5 is arranged in the shaft fixing frame, one end of the driving shaft is connected with a power source, the other end of the driving shaft is connected with a clamping piece 6, a pull rod 7 is movably connected onto the clamping piece, the other end of the pull rod is connected onto a one-way bearing 8, and the driving shaft does forward and reverse rotation motion;
The one-way bearing is sleeved on a first driven shaft 9, the first driven shaft is positioned in a shaft fixing frame, and a first bevel gear 10 and a second bevel gear 11 which are opposite to each other are arranged on the first driven shaft; the first driven shaft is a hollow shaft, an inner shaft 25 is arranged in the hollow shaft, an annular groove 26 is arranged at one end of the inner shaft, and the rear section of the inner shaft is connected with the reversing component; the inner walls of the first bevel gear and the second bevel gear are provided with inner grooves 27 which are axial grooves, the front end of the hollow shaft is provided with two holes 28, steel balls 29 are placed in the holes, the two steel balls respectively correspond to the inner grooves of the first bevel gear and the second bevel gear, and the distance between the two steel balls is 2 times shorter than the groove width of the annular groove;
The first bevel gear and the second bevel gear are sleeved on the first driven shaft in a clearance fit manner.
the second driven shaft 12 is positioned in the vertical frame and penetrates through the underframe, a gear 13 is arranged at the lower end of the second driven shaft and is positioned between the first bevel gear and the second bevel gear, and the gear is meshed with the first bevel gear and the second bevel gear;
the upper end of the second driven shaft is connected with the feeding mechanism.
The feeding mechanism comprises a third bevel gear 14, a feeding wheel 15 and a feeding wheel fixing part 16, wherein the feeding wheel fixing part is fixed to the top end of the vertical frame, a bearing is arranged on the feeding wheel fixing part, the third bevel gear is fixed to the top end of the second driven shaft, a shaft is arranged at the center of the feeding wheel and penetrates through the bearing, teeth are arranged on one side of the feeding wheel, and the third bevel gear is meshed with the teeth on the side wall of the feeding wheel.
The reversing component comprises a backstitch electromagnet 17, a turning plate 18 and a shaft sleeve 19; the backstitch electromagnet is fixed on the electromagnet bracket, the front end of the shaft fixing frame is provided with a vertical plate 20, the vertical plate is hinged with a turning plate, the turning plate is hinged on the vertical plate, the other end of the inner shaft penetrates through the vertical plate and is sleeved with a shaft sleeve, the shaft sleeve is provided with an annular chute 21, the upper end of the turning plate is provided with a sliding block clamped in the annular chute 21, and the backstitch electromagnet is hinged at the lower end of the turning;
wherein the driving shaft makes positive and negative rotation movement to drive the clamping piece to swing, a pull rod on the clamping piece pulls the unidirectional bearing bush to make unidirectional rotation, thereby driving the first driven shaft to rotate, a tooth on the first driven shaft drives a gear to rotate (one steel ball is positioned outside the annular groove, the other steel ball is positioned in the annular groove, at the moment, the steel ball positioned in the annular groove is propped against an inner groove of the bevel gear to drive the bevel gear to rotate, the other steel ball bevel gear is positioned in the annular groove and separated from an inner groove of the other bevel gear, the other bevel gear idles along with the gear), the gear drives the second driven shaft to rotate, the upper end of the second driven shaft is a feeding mechanism, at the moment, the feeding mechanism feeds materials in positive direction, the backstitch battery iron is opened, the lower end of the backstitch battery iron is pulled to turn, the turnover plate turns around a point hinged on the vertical, therefore, the positions of the two steel balls in the inner shaft and the annular groove are changed, the steel balls outside the annular groove fall into the annular groove, the steel balls inside the annular groove rise out of the annular groove, the alternation of the first bevel gear teeth and the second bevel gear teeth is completed, the second driven shaft rotates reversely, and the feeding mechanism is driven to rotate reversely to complete backstitch.
The groove wall of the annular groove is an inclined plane, and the distance between the two steel balls is 2 times shorter than the width of the groove bottom of the annular groove. When guaranteeing that one of them steel ball rises outside the annular groove, another steel ball descends to the annular groove tank bottom, avoids appearing the condition of beating the tooth, simultaneously, a certain moment can appear in 2 times length, and two steel balls are all at the annular groove tank bottom, and two bevel gears park, and gear and bevel gear park after stable, then insert a bevel gear fast, when avoiding appearing the bevel gear along with the gear forward rotation, the steel ball inserts suddenly, and the sudden braking gets into the tooth condition that the direction rotation leads to.
the basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. the utility model provides a sewing machine lower roller pay-off reversing mechanism which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
The electromagnetic device comprises a rack, a power supply and a control system, wherein the rack comprises a bottom frame, a shaft fixing frame arranged below the bottom frame, an electromagnet bracket and a vertical frame arranged on the bottom frame;
the driving shaft is arranged in the shaft fixing frame, one end of the driving shaft is connected with a power source, the other end of the driving shaft is connected with a clamping piece, a pull rod is movably connected to the clamping piece, the other end of the pull rod is connected to the unidirectional bearing, and the driving shaft does forward and reverse rotation motion;
the unidirectional bearing bush is sleeved on the first driven shaft, the first driven shaft is positioned in the shaft fixing frame, and the first driven shaft is provided with a first bevel gear and a second bevel gear which are opposite;
the second driven shaft is positioned in the vertical frame and penetrates through the underframe, a gear is arranged at the lower end of the second driven shaft and positioned between the first bevel gear and the second bevel gear, and the gear is meshed with the first bevel gear or the second bevel gear;
The reversing component comprises a backstitch electromagnet, a turnover plate and a shaft sleeve; the backstitch electromagnet is fixed on the electromagnet bracket, a vertical plate is arranged at the front end of the shaft fixing frame, a turning plate is hinged to the vertical plate, the turning plate is hinged to the vertical plate, one end of a first driven shaft penetrates through the vertical plate and is sleeved with a shaft sleeve, an annular sliding groove is formed in the shaft sleeve, a sliding block is arranged at the upper end of the turning plate and is clamped in the annular sliding groove, and the backstitch electromagnet is hinged to the lower end of the turning plate.
2. the feed reversing mechanism for the lower roller of the sewing machine according to claim 1, wherein: the driving shaft rotates forwards and backwards to drive the clamping piece to swing, the pull rod on the clamping piece pulls the one-way bearing forest to rotate in one way, so that the first driven shaft is driven to rotate, the first bevel gear on the first driven shaft drives the gear to rotate, the gear drives the second driven shaft to rotate, the upper end of the second driven shaft is provided with the feeding mechanism, at the moment, the feeding mechanism feeds materials in the forward direction, the backstitch battery iron is opened, the lower end of the turning plate is pulled to turn by the backstitch battery iron, the turning plate overturns around a point hinged on the vertical plate, the upper end of the turning plate pulls the first driven shaft, so that the first bevel gear is separated from the gear, the second bevel gear is meshed with the gear, and after the second bevel gear is meshed with the gear, the second driven shaft rotates.
3. the feed reversing mechanism for the lower roller of the sewing machine according to claim 1, wherein: the first bevel gear and the second bevel gear are fixed on the first driven shaft.
4. The feed reversing mechanism for the lower roller of the sewing machine according to claim 1, wherein: and the upper end of the second driven shaft is connected with the feeding mechanism.
5. The feed reversing mechanism for the lower roller of the sewing machine according to claim 4, wherein: the feeding mechanism comprises a third bevel gear, a feeding wheel and a feeding wheel fixing part, wherein the feeding wheel fixing part is fixed to the top end of the vertical frame, a bearing is arranged on the feeding wheel fixing part, the third bevel gear is fixed to the top end of the second driven shaft, a shaft is arranged at the center of the feeding wheel and penetrates through the bearing, teeth are arranged on one side of the feeding wheel, and the third bevel gear is meshed with the teeth on the side wall of the feeding wheel.
6. The feed reversing mechanism for the lower roller of the sewing machine according to claim 1, wherein: the one-way bearing forest internal fixation cover has the sleeve pipe, is equipped with horizontal slot hole on the sleeve pipe, be equipped with the locating pin on the first driven shaft, the locating pin is located horizontal slot hole.
7. the feed reversing mechanism for the lower roller of the sewing machine according to claim 6, wherein: the sleeve is provided with a groove, the inner wall of the unidirectional bearing is provided with a convex block, and the convex block is clamped in the groove to finish the fixed connection of the sleeve and the unidirectional bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920181924.4U CN209741393U (en) | 2019-01-29 | 2019-01-29 | Lower roller feeding reversing mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920181924.4U CN209741393U (en) | 2019-01-29 | 2019-01-29 | Lower roller feeding reversing mechanism of sewing machine |
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| Publication Number | Publication Date |
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| CN209741393U true CN209741393U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920181924.4U Active CN209741393U (en) | 2019-01-29 | 2019-01-29 | Lower roller feeding reversing mechanism of sewing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109943985A (en) * | 2019-01-29 | 2019-06-28 | 安徽杰羽制鞋机械科技有限公司 | A kind of sewing machine bottom roller feeding reversing mechanism |
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2019
- 2019-01-29 CN CN201920181924.4U patent/CN209741393U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109943985A (en) * | 2019-01-29 | 2019-06-28 | 安徽杰羽制鞋机械科技有限公司 | A kind of sewing machine bottom roller feeding reversing mechanism |
| CN109943985B (en) * | 2019-01-29 | 2024-05-17 | 安徽杰羽制鞋机械科技有限公司 | Lower roller feeding reversing mechanism of sewing machine |
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