CN1130478C - Backsewing unit of industrial sewing machine - Google Patents
Backsewing unit of industrial sewing machine Download PDFInfo
- Publication number
- CN1130478C CN1130478C CN 00103472 CN00103472A CN1130478C CN 1130478 C CN1130478 C CN 1130478C CN 00103472 CN00103472 CN 00103472 CN 00103472 A CN00103472 A CN 00103472A CN 1130478 C CN1130478 C CN 1130478C
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- power transmission
- axle
- driver element
- inroller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
The present invention relates to an inverse sewing device of an industrial sewing machine. A machine body is provided with a switching device; when inverse sewing is carried out by the sewing machine, a power transmission element prearranged in a column of the sewing machine is pushed by starting the switching device, a lower pull rod and an upper pulled rod are linked to move, and pressing elements are driven respectively to press a clutch device combined with an upper material sending shaft and a lower material sending shaft; thereby, the clutch device is in a clamping connection state or a releasing idle state with a transmission shaft for selecting the driving mode of the upper material sending shaft and the lower material sending shaft to the transmission shaft, and the upper material sending shaft or the lower material sending shaft is driven to rotate positively and reversesly for providing and sending an operated object for positive sewing or inverse sewing.
Description
Technical field
The present invention relates to a kind of Backsewing unit of industrial sewing machine.
Background technology
In the technical field of commonly using, the Backsewing unit of relevant industrial Sewing machines (seeing also shown in Fig. 1,2), the rotation direction of two drawing-inrollers up and down of its working substance travel direction of relevant controlling in the operation will be backstitched, and the suture needle whereabouts and the lifting time of cooperating thing moving direction, controlled by three electromagnetic valves (A, B, C) respectively, three electromagnetic valves (A, B, C) are parallel to same release knob; Design has clutch gear group (D) between the wheel shaft of last drawing-inroller and the axle bed, is subjected to the effect of electromagnetic valve (A) and separates drawing-inroller is dallied; The other end of following drawing-inroller wheel shaft is provided with travelling gear, this travelling gear and two relative positive and negative two bevel gears unifications of coaxial rotation, clutch gear group (E) be subjected to electromagnetic valve (C) do that the time spent travelling gear separates with positive bevel gear and with anti-bevel gear interlock, drawing-inroller is reversed, and there is following shortcoming in it:
One, needs to act on simultaneously, begin to such an extent that startup backstitches system, except that the manufacturing cost of electromagnetic valve is higher by three electromagnetic valve A, B, C, the work that continues of its circuit is complicated, and in addition, this electromagnetic valve belongs to electronic product, have certain service life, it is easy to generate fault after inhaling for a long time repeatedly, putting action, because in this mechanism, if any arbitrary solenoid valve failure, then can't implement to backstitch, when use on the historical facts or anecdotes border, removing needs guarantee regularly to safeguard that its fault rate is higher.
Two, after this electromagnetic valve A, C start, drive clutch gear group D, E respectively and produce disengaging or engagement, so that producing the direction of advancing or retreating, the work object changes, owing to have certain distance between each tooth row of clutch gear group D, E, and the running speed of Sewing machines is fast, engagement rapidly in a short period of time, make can produce between the tooth row of its gear train begin after the severe impact engaging, so in use for some time, often have the tooth row breakdown to cause the bad shortcoming that maybe can't mesh of engagement.
Three, as described in the preceding paragraph, engagement rapidly in a short period of time between this tooth row, because its strength of impacting engaging is big, regular meeting produces acute big vibrations and noise, and the operating personnel is manipulated down for a long time, can produce discomfort even employment injuries.
Summary of the invention
The purpose of this invention is to provide a kind of Backsewing unit that adopts the industrial sewing machine of change-over switch, its low cost of manufacture, simple in structure, reliability is high, and noise is little.
The object of the present invention is achieved like this, a kind of Backsewing unit of industrial sewing machine, the body predetermined position of this Sewing machines is provided with a switching device shifter, when it implements to backstitch in the Sewing machines desire, start the interior power transmitting elements of column that this switching device shifter ejection defaults in Sewing machines, the action of interlock lower link and upper connecting rod, and drive it respectively and press the arrangement of clutch top that element pressure holding and following feed spool and last feed spool group are put; Wherein be somebody's turn to do the arrangement of clutch of putting with the lower link group, comprise by power transmission shaft, first driver element, second driver element, precalculated position, body bottom surface is located in this power transmission shaft location, and the cover group first in regular turn, second driver element, the top of this power transmission shaft convexedly stretches in this arrangement of clutch one predetermined altitude, it is passed by pressing of lower link and selects switching to link the first or second drive unit drives power transmission shaft, and another driver element forms idling conditions, by this first, second driver element be connected with respectively first, the second connecting rod group is connected with following feed spool, and in first, the passing that has 180 degree between the second connecting rod group differs, during feed spool twisting instantly, be connected with it first, the second connecting rod group, the selected binding first or second driver element that cooperate power transmission shaft, promote first or second driver element respectively and do intermittent directed the rotation, just drive power transmission shaft simultaneously, counter-rotating, the bevel gear that order is fixedly arranged on the power transmission shaft bottom drives that drawing-inroller is just producing under the travelling gear interlock, reverse, and then make down drawing-inroller be able to the work object is just being stitched feeding or backstitching feeding; This upper connecting rod group is equipped with another arrangement of clutch, this arrangement of clutch comprises power transmission shaft and driver element, the chain-drive section predetermined position of Sewing machines is located in this power transmission shaft location, and it is behind cover group driver element, the top of this power transmission shaft convexedly stretches in this arrangement of clutch one predetermined altitude, it is subjected to upper connecting rod interlock pressure arm to press down the passing power transmission shaft, power transmission shaft and driver element break away from clip, at this power transmission shaft and driver element when not pressed by pressure arm, can promote driver element by the connection rod set that this and last feed spool connect group and do intermittent directed the rotation, drive power transmission shaft simultaneously and rotate, the interlock group places the last drawing-inroller of power transmission shaft bottom to rotate, and the object that pushes the work forward is just stitching feeding; When backstitching, this power transmission shaft is pressed down by pressure arm and breaks away from clip with driver element, power transmission shaft is the state that freely rotates, instantly drawing-inroller will be worked object when backstitching feeding, last drawing-inroller pressure holding is in work object top, and the rotation that is subjected to the down drawing-inroller object that pushes the work forward produces reverse rotation, drives power transmission shaft and produces idle running, cooperates the carrying out that backstitches.
Be somebody's turn to do the arrangement of clutch of putting with the lower link group, comprise power transmission shaft, first driver element, second driver element, this power transmission shaft is worn group by axle and axostylus axostyle and is formed, the front end of its central shaft has class's face, and form a ring top in the below of axle periphery, ring both sides, top are inwardly radially held back respectively and are received and the formation scalene cone; This axostylus axostyle around in regular turn the cover group have first, second driver element, and its front end is the hollow type mouth of pipe, mouth of pipe inside has installed a reposition element, this axle can be penetrated by the mouth of pipe of axostylus axostyle and replace with reposition element, setting element is with the class face packing location of axostylus axostyle and axle front end, the top of axle convexedly stretches in its surperficial predetermined altitude, and when being pressed the element pressure holding, this axle can appropriate displacement in the mouth of pipe of axostylus axostyle, and returned again by the reposition element ejection, the spout part precalculated position of aforementioned axostylus axostyle, at least be equipped with the plural hole of bead of two row, make this hole of bead just can be installed with for steel ball, and the top surface of ring and the scalene cone of respectively corresponding axle below, when the axle pressurized and in the mouth of pipe of axostylus axostyle during displacement, can respectively the steel ball ejection be moved or give steel ball outward by this top surface of ring and scalene cone is installed with and enters in the scalene cone, utilizing steel ball to be moved or be installed with by ejection outward enters, and be able to respectively to link with the corresponding hole of bead and the inwall clip that forms first or second driver element of recess or to discharge idle running, utilize the axle that discharges or press the power transmission shaft top, selection is with the first or second driver element outputting power, push away the power transmission shaft forward or reverse, drawing-inroller is just producing under the interlock, reverse, and the object of will working is just stitching feeding or is backstitching feeding.
Be somebody's turn to do the arrangement of clutch of putting with the upper connecting rod group, comprise power transmission shaft and driver element, and this power transmission shaft, wearing group by axle and axostylus axostyle forms, wherein the front end of this axle has class's face, the axle periphery wall of its below is radially held back to the axle inner face with a suitable phase angle and received and the formation scalene cone: the cover group has a driver element around this axostylus axostyle, and the front end of axostylus axostyle is the hollow type mouth of pipe, mouth of pipe inside has installed a reposition element, this axle is penetrated and is replaced with reposition element by the mouth of pipe of axostylus axostyle, setting element is with the class face packing location of axostylus axostyle and axle front end, the top of axle convexedly stretches in its surperficial predetermined altitude, and when being subjected to the pressure arm pressure holding, this axle is appropriate displacement in the mouth of pipe of axostylus axostyle, and returned again by the reposition element ejection, the spout part precalculated position of the axostylus axostyle of addressing, at least be equipped with the plural hole of bead of row, this hole of bead just can be installed with for steel ball, at the axle pressurized and in the mouth of pipe of axostylus axostyle during displacement, the periphery wall and the scalene cone of this axle, respectively the steel ball ejection being moved or gives steel ball outward is installed with and enters in the scalene cone, steel ball is moved outward or is installed with by ejection and enters, to be with the corresponding hole of bead and the inwall that forms the driver element of recess that clip links or it discharged and dallies, utilize the axle that discharges or press the power transmission shaft top, select whether to link the driver element outputting power, promote the pattern that power transmission shaft rotates, this power transmission shaft is not when being pressed by pressure arm, the connection rod set that connects group by this and last feed spool promotes driver element and does intermittent directed the rotation, driving power transmission shaft simultaneously rotates, and then the interlock group places the last drawing-inroller running of power transmission shaft bottom, and the object that pushes the work forward is just stitching feeding; When backstitching, this power transmission shaft is pressed down by pressure arm and breaks away from clip with driver element, power transmission shaft runs out of steam and is state free to rotate, instantly drawing-inroller will be worked object when backstitching feeding, last drawing-inroller pressure holding is in work object top, and is subjected to down the rotation of drawing-inroller, the object that pushes the work forward generation reverse rotation, and then drive power transmission shaft generation idle running, cooperate the carrying out that backstitches.
This respectively cover organize each driver element in power transmission shaft, by cover group guide bearing and inner sleeve are constituted in regular turn in the axle sleeve, and this axle sleeve is connected with connection rod set respectively, the hole of bead of the corresponding power transmission shaft of the inwall of this inner sleeve forms recess, down/go up feed spool twisting promotion driver element to do intermittent directed the rotation, become clip to link between the recess that cooperates this inner sleeve simultaneously and power transmission shaft or discharge idle running, outputing power drives power transmission shaft or idle running around power transmission shaft.
The mode of connection of this power transmission shaft bottom and last drawing-inroller, set firmly a universal joint in the power transmission shaft bottom, connect axle of group again, link with last drawing-inroller, and the inside of aforesaid seat axle has an elasticity pressure holding element, the work object of this elasticity pressure holding element different thickness in last drawing-inroller in pressure holding, and the seat bar produces axial displacement, can obtain best location between the work object of last drawing-inroller and stablize the pressure holding effect, and be convenient to just stitch or backstitch the execution of feeding.
The present invention can conclude the effect with following enhancement:
One, the action that the present invention can a change-over switch and drive Sewing machines and backstitch operation, significantly reduce the quantity of using electromagnetic valve as the person of commonly using, save the time cost of circuit connection etc. simultaneously, manufacturing cost is minimized, and reduce the fault rate that electronic component produces.
Two, the present invention backstitches the execution of operation, mainly produce displacement by pressing power transmission shaft, the steel ball ejection moved outward or be installed with enter, link or release idle running with the driver element clip, provide down thus (or on) the feed spool action, drivening rod group interlock driver element is driven power transmission shaft and is just being produced, reverse or make it idle running, just stitch or backstitch feeding and reach, it is simple in structure, the reliability height, and its steel ball is subjected to the power transmission shaft ejection and displacement in the hole of bead, its stroke weak point, be swift in motion, engagement is good, and there is not the shortcoming that the gear row prescription formula of commonly using has the easy breakdown of tooth row, steel ball is hard, has nonabradable characteristic, makes long product lifecycle.
Three, clip clutch action of the present invention is passed steel ball with power transmission shaft and is finished, and the impact strength of its action is little, makes the vibrations of generation and noise quite slight, makes the operating personnel be able to can reduce unnecessary damages than comfortable environment work.
Description of drawings
Fig. 1 be commonly use Sewing machines backstitch the assembly constitutional diagram.
Fig. 2 is a feeding transmission system exploded view of commonly using Sewing machines.
Fig. 3 is another combination of angles stereogram of feed spool down of the present invention and arrangement of clutch.
Fig. 4 drives the enforcement schematic diagram of drawing-inroller under the travelling gear interlock for the bevel gear of power transmission shaft of the present invention bottom.
Fig. 5 is the cutaway view of feed spool down of the present invention and arrangement of clutch.
Fig. 6 is a combination stereogram of going up feed spool and arrangement of clutch of the present invention.
Fig. 7 is a combination of side view of going up feed spool and arrangement of clutch of the present invention.
Fig. 8 is a cutaway view of going up feed spool and arrangement of clutch of the present invention.
Fig. 9 drives the action diagram that presses element pressure holding arrangement of clutch for lower link of the present invention.
Figure 10 is the action diagram that upper connecting rod of the present invention drives pressure arm pressure holding arrangement of clutch.
The specific embodiment
Describe the concrete structure and the operation principle of the Backsewing unit of the industrial sewing machine that proposes according to the present invention in detail below in conjunction with accompanying drawing.
See also shown in Fig. 3-8, the Backsewing unit of a kind of industrial sewing machine of the present invention, the body predetermined position of this Sewing machines A is provided with a switching device shifter 1 (as shown in Figure 6), when it implements to backstitch in Sewing machines A desire, can start the interior power transmitting elements (figure does not show) of column that this switching device shifter 1 ejection defaults in Sewing machines A, the action of interlock lower link 11 (as shown in Figure 3) and upper connecting rod 12 (as shown in Figure 6), and drive it respectively and press element 111 and pressure arm 121 pressure holdings and following feed spool and 14 groups of arrangement of clutch of putting of last feed spool, 2,3 tops; Wherein be somebody's turn to do and 11 groups of arrangement of clutch of putting 2 of lower link, comprise by power transmission shaft 21, first driver element 22, second driver element 23 constitutes, precalculated position, body bottom surface is located in these power transmission shaft 21 location, and the cover group first in regular turn, second driver element 22, after 23, make the top of this power transmission shaft 21 convexedly stretch in this arrangement of clutch 2 one predetermined altitudes, make it can be subjected to pressing of lower link 11 to pass and select switching binding first or second driver element 22 or 23 driving power transmission shafts 21, and make another driver element form idling conditions, by this first, second driver element 22,23 be connected with respectively first, second connecting rod group 24,25 are connected with following feed spool, and in first, second connecting rod group 24,25 passing with 180 degree differ, during feed spool twisting instantly, be connected with it first, second connecting rod group 24,25, the selected binding first or second driver element 22 that can cooperate power transmission shaft 21,23, do intermittent directed the rotation and promote first or second driver element 22 or 23 respectively, just drive power transmission shaft 21 simultaneously, counter-rotating, the bevel gear 26 that order is fixedly arranged on power transmission shaft 21 bottoms drives that drawing-inroller 28 is just producing under travelling gears 27 interlocks, reverse, and then make down drawing-inroller 28 be able to the work object is just being stitched feeding or backstitching feeding; In addition, this upper connecting rod is equipped with another arrangement of clutch 3 for 12 groups, and this arrangement of clutch 3 is made up of power transmission shaft 31 and driver element 32, the chain-drive section predetermined position of Sewing machines A is located in these power transmission shaft 31 location, and it is behind cover group driver element 32, the top of this power transmission shaft 31 is to convexedly stretch in this arrangement of clutch 3 one predetermined altitudes, make it pressed down by upper connecting rod 12 interlock pressure arms 121 and pass power transmission shaft 31, make power transmission shaft 31 and driver element 32 break away from clip, promptly get at this power transmission shaft 31 and driver element 32 when not pressed by pressure arm 121, can promote driver elements 32 by the connection rod set 33 that this and last feed spool 14 connects group and do intermittent directed the rotation, driving power transmission shaft 31 simultaneously rotates, and then the interlock group places the last drawing-inroller 34 of power transmission shaft 31 bottoms to rotate, and the object that pushes the work forward is just stitching feeding; When implementing to backstitch, because being pressed down by pressure arm 121, this power transmission shaft 31 breaks away from clip with driver element 32, promptly this driver element 32 can't be with transmission of power to power transmission shaft 31, power transmission shaft 31 is state free to rotate, and thus, drawing-inroller 28 will be worked object when backstitching feeding instantly, because last drawing-inroller 34 pressure holdings are in work object top, and the rotation that is subjected to down drawing-inroller 28 object that pushes the work forward produces reverse rotation, and then drives power transmission shaft 31 and produce idle running, and is cooperated the carrying out that backstitches.
See also shown in Figure 5, can find out, wherein be somebody's turn to do and 11 groups of arrangement of clutch of putting 2 of lower link, comprise by power transmission shaft 21, first driver element 22, second driver element 23 being constituted, and, this power transmission shaft 21, wearing group by axle 211 and axostylus axostyle 212 forms, the front end of its central shaft 211 has class's face 2111, and forms a ring top 2112 in the below of axle 211 periphery, and ring 2112 both sides, top are inwardly radially held back respectively and received and formation scalene cone 2113; This axostylus axostyle 212 around in regular turn the cover group have first, second driver element 22,23, and its front end is the hollow type mouth of pipe, mouth of pipe inside has installed a reposition element 2121, this axle 211 can be penetrated by the mouth of pipe of axostylus axostyle 212 and replace with reposition element 2121, utilize the class face 2111 packings location of setting element 2122 with axostylus axostyle 212 and axle 211 front ends, make the top of axle 211 convexedly stretch in its surperficial predetermined altitude, and when being pressed element 111 pressure holdings, this axle 211 can appropriate displacement in the mouth of pipe of axostylus axostyle 212, and returned again by reposition element 2121 ejections, again, the spout part precalculated position of aforesaid axostylus axostyle 212, at least be equipped with the plural hole of bead 2123 of two row, 2124, make this hole of bead 2123,2124 just can be installed with for steel ball 2125, and the top surface of ring 2112 and the scalene cone 2113 of the corresponding axle of difference 211 belows, make axle 211 pressurizeds and in the mouth of pipe of axostylus axostyle 212 during displacement, can respectively steel ball 2125 ejections be moved or give steel ball 2125 outward by this top surface of ring 2112 and scalene cone 2113 is installed with and enters in the scalene cone 2123, utilizing steel ball 2125 to be moved or be installed with by ejection outward enters, and be able to respectively and the corresponding hole of bead 2123,2124 and form first or second driver element 22 of recess D, 23 inwall clip links or release idle running (as shown in Figure 9), reach and to utilize the axle 211 that discharges or press power transmission shaft 21 tops, and select with first or second driver element 22,23 outputting powers push away power transmission shaft 21 forward or reverse, and then drawing-inroller 28 is just producing under the interlock, reverse, and the object of will working is just stitching feeding or is backstitching feeding;
In addition, be somebody's turn to do and 12 groups of arrangement of clutch of putting 3 of upper connecting rod (seeing also Fig. 6,7,8), comprise by power transmission shaft 31 and driver element 32 and being formed, and this power transmission shaft 31, wearing group by axle 311 and axostylus axostyle 312 forms, wherein the front end of this axle 311 has class's face 3111, and the axle 311 periphery walls 3112 of its below are radially to hold back to axle 311 inner faces with a suitable phase angle to receive and formation scalene cone 3113; And, around this axostylus axostyle 312 is that the cover group has a driver element 32, and the front end of axostylus axostyle 312 is the hollow type mouth of pipe, mouth of pipe inside has installed a reposition element 3121, make this axle 311 penetrate by the mouth of pipe of axostylus axostyle 312 and and reposition element 3121 replace, utilize the class face 3111 packings location of setting element 3122 with axostylus axostyle 312 and axle 311 front ends, make the top of axle 311 convexedly stretch in its surperficial predetermined altitude, and when being subjected to pressure arm 121 pressure holdings, this axle 311 can appropriate displacement in the mouth of pipe of axostylus axostyle 312, and returned again by reposition element 3121 ejections, again, the spout part precalculated position of the axostylus axostyle of addressing 312, at least be equipped with the plural hole of bead 3123 of row, make this hole of bead 3123 just can be installed with for steel ball 3125, make axle 311 pressurizeds and in the mouth of pipe of axostylus axostyle 312 during displacement, can be by the periphery wall 3112 and the scalene cone 3113 of this axle 311, respectively steel ball 3125 ejections being moved or give steel ball 3125 outward is installed with and enters in the scalene cone 3113, utilizing steel ball 3125 to be moved or be installed with by ejection outward enters, and be able to be with the corresponding hole of bead 3123 and the inwall that forms the driver element 32 of recess D ' that clip links or will release idle running (seeing also Figure 10), reach and to utilize the axle 311 that discharges or press power transmission shaft 31 tops, and whether selection links driver element 32 outputting powers, promote the pattern that power transmission shaft 31 rotates, make this power transmission shaft 31 when not pressed by pressure arm 121, can promote driver elements 32 by the connection rod set 33 that this and last feed spool 14 connects group and do intermittent directed the rotation, driving power transmission shaft 31 simultaneously rotates, and then the interlock group places last drawing-inroller 34 running of power transmission shaft 31 bottoms, and the object that pushes the work forward is just stitching feeding; When implementing to backstitch, because being pressed down by pressure arm 121, this power transmission shaft 31 breaks away from clip with driver element 32, promptly this driver element 32 can't be with transmission of power to power transmission shaft 31, power transmission shaft 31 is run out of steam and be state free to rotate, thus, instantly drawing-inroller 28 will be worked object when backstitching feeding, because last drawing-inroller 33 pressure holdings are in work object top, and be subjected to down the rotation of drawing-inroller 28, the object that pushes the work forward produces reverse rotation, and then drive power transmission shaft 31 generation idle running, and cooperated the carrying out that backstitches.
Again, cover respectively of the present invention is organized in power transmission shaft 21, respectively this driver element 22 of 31,23,32, by cover group guide bearing B and inner sleeve C are constituted in regular turn in the axle sleeve A, and this axle sleeve A respectively with connection rod set 24,25,33 are connected with, the corresponding power transmission shaft 21 of the inwall of this inner sleeve c, 31 the hole of bead 2123,2124,3123 form recess D, instantly (or on) feed spool 13,14 twistings can promote driver element 22,23,32 do intermittent directed the rotation, the recess D and the power transmission shaft 21 that cooperate this inner sleeve C simultaneously, 31 become clip to link or discharge to dally, driven power transmission shaft 21 and output power, 31 or in power transmission shaft 21, idle running around 31.
The preferable pressure holding effect of the present invention and work object can be provided as shown in Figure 8, the mode of connection of these power transmission shaft 31 bottoms and last drawing-inroller 34 wherein, set firmly a universal joint 35 in power transmission shaft 31 bottoms, after connecting axle 36 of group again, beginning links with last drawing-inroller 34, and the inside of aforesaid seat axle 36 has an elasticity pressure holding element 361, make this elasticity pressure holding element 361 can be in last drawing-inroller 34 in pressure holding during the work object of different thickness, can provide a bar 36 to produce suitable axial displacement, make to obtain best location between the work object of going up drawing-inroller 34 and stablize the pressure holding effect, and be convenient to just stitch or backstitch the execution of feeding.
Claims (5)
1, a kind of Backsewing unit of industrial sewing machine, it is characterized in that: the body predetermined position of this Sewing machines is provided with a switching device shifter, when it implements to backstitch in the Sewing machines desire, start the interior power transmitting elements of column that this switching device shifter ejection defaults in Sewing machines, the action of interlock lower link and upper connecting rod, and drive it respectively and press the arrangement of clutch top that element pressure holding and following feed spool and last feed spool group are put; Wherein be somebody's turn to do the arrangement of clutch of putting with the lower link group, comprise power transmission shaft, first driver element, second driver element, precalculated position, body bottom surface is located in this power transmission shaft location, and the cover group first in regular turn, second driver element, the top of this power transmission shaft convexedly stretches in this arrangement of clutch one predetermined altitude, it is passed by pressing of lower link and selects switching to link the first or second drive unit drives power transmission shaft, and another driver element forms idling conditions, by this first, second driver element be connected with respectively first, the second connecting rod group is connected with following feed spool, and in first, the passing that has 180 degree between the second connecting rod group differs, during feed spool twisting instantly, be connected with it first, the second connecting rod group, the selected binding first or second driver element that cooperate power transmission shaft, promote first or second driver element respectively and do intermittent directed the rotation, just drive power transmission shaft simultaneously, counter-rotating, the bevel gear that order is fixedly arranged on the power transmission shaft bottom drives that drawing-inroller is just producing under the travelling gear interlock, reverse, and then make down drawing-inroller be able to the work object is just being stitched feeding or backstitching feeding; This upper connecting rod group is equipped with another arrangement of clutch, this arrangement of clutch comprises power transmission shaft and driver element, the chain-drive section predetermined position of Sewing machines is located in this power transmission shaft location, and it is behind cover group driver element, the top of this power transmission shaft convexedly stretches in this arrangement of clutch one predetermined altitude, it is subjected to upper connecting rod interlock pressure arm to press down the passing power transmission shaft, power transmission shaft and driver element break away from clip, at this power transmission shaft and driver element when not pressed by pressure arm, the connection rod set that connects group by this and last feed spool promotes driver element and does intermittent directed the rotation, drive power transmission shaft simultaneously and rotate, the interlock group places the last drawing-inroller of power transmission shaft bottom to rotate, and the object that pushes the work forward is just stitching feeding; When backstitching, this power transmission shaft is pressed down by pressure arm and breaks away from clip with driver element, power transmission shaft is the state that freely rotates, instantly drawing-inroller will be worked object when backstitching feeding, last drawing-inroller pressure holding is in work object top, and the rotation that is subjected to the down drawing-inroller object that pushes the work forward produces reverse rotation, drives power transmission shaft and produces idle running, cooperates the carrying out that backstitches.
2, the Backsewing unit of industrial sewing machine according to claim 1, it is characterized in that: the power transmission shaft of the arrangement of clutch that should put with the lower link group is worn group by axle and axostylus axostyle and is formed, the front end of its central shaft has class's face, and form a ring top in the below of axle periphery, ring both sides, top are inwardly radially held back respectively and are received and the formation scalene cone; This axostylus axostyle around in regular turn the cover group have first, second driver element, and its front end is the hollow type mouth of pipe, mouth of pipe inside has installed a reposition element, this axle can be penetrated by the mouth of pipe of axostylus axostyle and replace with reposition element, setting element is with the class face packing location of axostylus axostyle and axle front end, the top of axle convexedly stretches in its surperficial predetermined altitude, and when being pressed the element pressure holding, this axle can appropriate displacement in the mouth of pipe of axostylus axostyle, and returned again by the reposition element ejection, the spout part precalculated position of aforementioned axostylus axostyle, at least be equipped with the plural hole of bead of two row, make this hole of bead just can be installed with for steel ball, and the top surface of ring and the scalene cone of respectively corresponding axle below, when the axle pressurized and in the mouth of pipe of axostylus axostyle during displacement, respectively the steel ball ejection being moved or gives steel ball outward by this top surface of ring and scalene cone is installed with and enters in the scalene cone, utilizing steel ball to be moved or be installed with by ejection outward enters, and be able to respectively to link with the corresponding hole of bead and the inwall clip that forms first or second driver element of recess or to discharge idle running, utilize the axle that discharges or press the power transmission shaft top, selection is with the first or second driver element outputting power, push away the power transmission shaft forward or reverse, drawing-inroller is just producing under the interlock, reverse, and the object of will working is just stitching feeding or is backstitching feeding.
3, the Backsewing unit of industrial sewing machine according to claim 1, it is characterized in that: the power transmission shaft that is somebody's turn to do the arrangement of clutch of putting with the upper connecting rod group, wearing group by axle and axostylus axostyle forms, wherein the front end of this axle has class's face, the axle periphery wall of its below is radially held back to the axle inner face with a suitable phase angle and received and the formation scalene cone: the cover group has a driver element around this axostylus axostyle, and the front end of axostylus axostyle is the hollow type mouth of pipe, mouth of pipe inside has installed a reposition element, this axle is penetrated and is replaced with reposition element by the mouth of pipe of axostylus axostyle, setting element is with the class face packing location of axostylus axostyle and axle front end, the top of axle convexedly stretches in its surperficial predetermined altitude, and when being subjected to the pressure arm pressure holding, this axle is appropriate displacement in the mouth of pipe of axostylus axostyle, and returned again by the reposition element ejection, the spout part precalculated position of the axostylus axostyle of addressing, at least be equipped with the plural hole of bead of row, this hole of bead just can be installed with for steel ball, at the axle pressurized and in the mouth of pipe of axostylus axostyle during displacement, the periphery wall and the scalene cone of this axle, respectively the steel ball ejection being moved or gives steel ball outward is installed with and enters in the scalene cone, steel ball is moved outward or is installed with by ejection and enters, to be with the corresponding hole of bead and the inwall that forms the driver element of recess that clip links or it discharged and dallies, utilize the axle that discharges or press the power transmission shaft top, select whether to link the driver element outputting power, promote the pattern that power transmission shaft rotates, this power transmission shaft is not when being pressed by pressure arm, the connection rod set that connects group by this and last feed spool promotes driver element and does intermittent directed the rotation, driving power transmission shaft simultaneously rotates, and then the interlock group places the last drawing-inroller running of power transmission shaft bottom, and the object that pushes the work forward is just stitching feeding; When backstitching, this power transmission shaft is pressed down by pressure arm and breaks away from clip with driver element, power transmission shaft runs out of steam and is state free to rotate, instantly drawing-inroller will be worked object when backstitching feeding, last drawing-inroller pressure holding is in work object top, and is subjected to down the rotation of drawing-inroller, the object that pushes the work forward generation reverse rotation, and then drive power transmission shaft generation idle running, cooperate the carrying out that backstitches.
4, according to the Backsewing unit of claim 1 or 2 or 3 described industrial sewing machines, it is characterized in that: this respectively cover organize each driver element in power transmission shaft, by cover group guide bearing and inner sleeve are constituted in regular turn in the axle sleeve, and this axle sleeve is connected with connection rod set respectively, the hole of bead of the corresponding power transmission shaft of the inwall of this inner sleeve forms recess, down/go up feed spool twisting promotion driver element to do intermittent directed the rotation, become clip to link between the recess that cooperates this inner sleeve simultaneously and power transmission shaft or discharge idle running, outputing power drives power transmission shaft or idle running around power transmission shaft.
5, the Backsewing unit of industrial sewing machine according to claim 3, it is characterized in that: the mode of connection of this power transmission shaft bottom and last drawing-inroller, set firmly a universal joint in the power transmission shaft bottom, connect axle of group again, link with last drawing-inroller, and the inside of aforesaid seat axle has an elasticity pressure holding element, the work object of this elasticity pressure holding element different thickness in last drawing-inroller in pressure holding, the seat bar produces axial displacement, can obtain best location between the work object of last drawing-inroller and stablize the pressure holding effect, and be convenient to just stitch or backstitch the execution of feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00103472 CN1130478C (en) | 2000-03-13 | 2000-03-13 | Backsewing unit of industrial sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00103472 CN1130478C (en) | 2000-03-13 | 2000-03-13 | Backsewing unit of industrial sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1313419A CN1313419A (en) | 2001-09-19 |
| CN1130478C true CN1130478C (en) | 2003-12-10 |
Family
ID=4577010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00103472 Expired - Fee Related CN1130478C (en) | 2000-03-13 | 2000-03-13 | Backsewing unit of industrial sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1130478C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346021C (en) * | 2004-02-24 | 2007-10-31 | 高林股份有限公司 | Backstitch structure of improved industrial sewing machine |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215764B (en) * | 2007-12-27 | 2011-05-04 | 启翔针车（上海）有限公司 | Clutch structure of sewing machine |
| CN102505363B (en) * | 2011-10-11 | 2013-10-02 | 中捷缝纫机股份有限公司 | Forward-stitching/ backward-stitching switching driving mechanism for Roland machine |
| CN102797119B (en) * | 2012-08-29 | 2014-07-23 | 池州市旭豪机械有限公司 | Forward and reverse feeding device for industrial column type sewing machine |
| 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 |
| CN109667071B (en) * | 2019-01-29 | 2024-03-01 | 安徽杰羽制鞋机械科技有限公司 | Lower backstitch mechanism of sewing machine |
-
2000
- 2000-03-13 CN CN 00103472 patent/CN1130478C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346021C (en) * | 2004-02-24 | 2007-10-31 | 高林股份有限公司 | Backstitch structure of improved industrial sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1313419A (en) | 2001-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1082155C (en) | Single sliding key type countershaft automatic transmission | |
| CN1130478C (en) | Backsewing unit of industrial sewing machine | |
| KR101403121B1 (en) | Transmission apparatus for a tractor | |
| CN103089961A (en) | Shifting transmission apparatus | |
| CN102720805A (en) | Automatic transmission and vehicle including the automatic transmission | |
| CN2408127Y (en) | Reverse sewing device for industrial sewing machine | |
| JP2012211672A (en) | Speed change transmission device | |
| CN201797732U (en) | Variable-speed operating structure of paddy-field operation machine | |
| JP3776044B2 (en) | Rice transplanter | |
| CN201099747Y (en) | Automatic backstitch device of post bed with wheel feed needle feed and driver roller presser lockstitch sewing machine | |
| JP5065767B2 (en) | Rice transplanter | |
| JP2012062926A (en) | Transmission device of tractor | |
| CN201027908Y (en) | Novel single-drive controllable multi-shaft rotating mechanism | |
| CN201220685Y (en) | Bidirectional running tractor | |
| CN102505363B (en) | Forward-stitching/ backward-stitching switching driving mechanism for Roland machine | |
| CN102076994A (en) | Multi-gear transmission device and power tool | |
| CN206916392U (en) | A kind of automatic cloth feed formula sewing machine | |
| CN2450234Y (en) | Reverse sewing device for industrial sewing machine | |
| EP1380405B1 (en) | Drive device for a mechanical press | |
| CN201148517Y (en) | Improvement of industrial sewing machine backstitch structure | |
| EP3162199A1 (en) | Transmission group for an agricultural mixer | |
| CN2357022Y (en) | Reversing sewing device for improved industrial sewing machine | |
| CN108978050B (en) | Terminal stitching device of composite material stitching manipulator and stitch forming method thereof | |
| JP5564017B2 (en) | Agricultural machine travel transmission device | |
| CN1156623C (en) | Threading mechanism for sewing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| AR01 | Abandonment of patent right to avoid double patenting |
According to article 9 of the patent law and article 13 of the detailed rules for the implementation of the patent law: 103472.3 of the invention patents in this issue as a notice of authorization, and at the same time corresponding to the 200277.9 utility model patent to be given up, and in the 19 volume of the 50 issue of the new type of communique on the patent right to abandon the announcement. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031210 Termination date: 20120313 |