EP4361334A1 - Thread cutting apparatus and automatic stitching apparatus - Google Patents
Thread cutting apparatus and automatic stitching apparatus Download PDFInfo
- Publication number
- EP4361334A1 EP4361334A1 EP23204458.6A EP23204458A EP4361334A1 EP 4361334 A1 EP4361334 A1 EP 4361334A1 EP 23204458 A EP23204458 A EP 23204458A EP 4361334 A1 EP4361334 A1 EP 4361334A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sewing
- piece
- bent
- needle
- pull plate
- 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.)
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- 238000005520 cutting process Methods 0.000 title claims abstract description 118
- 238000009958 sewing Methods 0.000 claims abstract description 141
- 239000002184 metal Substances 0.000 claims description 36
- 238000013459 approach Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 abstract description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000012545 processing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 238000009941 weaving Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B23/00—Sewing apparatus or machines not otherwise provided for
- D05B23/007—Sewing units for assembling parts of knitted panties or closing the stocking toe part
- D05B23/009—Toe closers
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
- D05B65/02—Devices for severing the needle or lower thread controlled by the sewing mechanisms
Definitions
- the present invention relates to sewing, more specifically to a thread cutting apparatus and an automatic stitching apparatus.
- the technology of sewing machines can only complete basic weaving tasks. For example, a cylindrical fabric can only be woven as a whole, and one end of the fabric cannot be automatically stitched. The completed woven fabric needs to be placed separately on another stitching device for secondary processing and stitching, so as to complete all processes of the fabric. During this period, multiple workers need to cooperate with each other to complete all processes. At present, the production processes cannot improve the production efficiency or reduce the production cost.
- the present invention provides a thread cutting apparatus, including: a fixed seat; a fixed cutting piece fixed on the fixed seat; a movable cutting piece fixed on the fixed seat by a bolt; a bent pull plate, where the upper end of the bent pull plate is combined with the tail end of the movable cutting piece; and a large angle pull plate, where the upper end of the large angle pull plate is combined with the lower end of the bent pull plate.
- a thread cutting apparatus including: a fixed seat; a fixed cutting piece fixed on the fixed seat; a movable cutting piece fixed on the fixed seat by a bolt; a bent pull plate, where the upper end of the bent pull plate is combined with the tail end of the movable cutting piece; and a large angle pull plate, where the upper end of the large angle pull plate is combined with the lower end of the bent pull plate.
- the thread cutting apparatus further includes: a bent hook piece attached to and mounted together with the movable cutting piece and moving together with the movable cutting piece; a bent push piece fixed on the fixed seat by the bolt; and a plectrum, where the first end of the plectrum is combined with the tail end of the bent push piece to push and pull the bent push piece, and the second end of the plectrum is capable of moving between an eccentric tightening ring on the bent pull plate and the upper end of the large angle pull plate.
- the heads of the bent hook piece and the bent push piece are respectively in a bent hook shape, and bent hooks are opposite.
- the movable cutting piece when the lower end of the large angle pull plate is pushed, the movable cutting piece is close to the fixed cutting piece, and the plectrum pushes the bent push piece to approach the middle; before a thread is cut, the bent push piece first contacts and pushes out a certain length of the thread to be cut, then the bent hook piece contacts and tightens the thread to be cut, and the movable cutting piece and the fixed cutting piece cut the thread; and when the lower end of the large angle pull plate is pulled, the bent hook piece and the movable cutting piece are away from the fixed cutting piece, and the bent push piece and the bent hook piece move in opposite directions.
- the thread cutting apparatus further includes: a cylinder connected to the lower end of the large angle pull plate; and a tension spring connected to the cylinder and the large angle pull plate.
- the thread cutting apparatus provided by the present invention is ingenious and compact in structure and can highly cooperate with a sewing machine for thread cutting.
- the present invention further provides an automatic stitching apparatus, including the foregoing thread cutting apparatus; and a sewing apparatus provided with a first sewing needle, a second sewing needle and a plate metal needle that cooperate with each other for knotting.
- the position of the thread cutting apparatus is close to a sewing point of the sewing apparatus, and after the sewing of the sewing apparatus is completed, the thread on a sewing coil is cut.
- the sewing apparatus further includes: a first connecting rod, where the first end of the first connecting rod is connected to the second end of a long crank, a first needle holder is mounted at the first end of the long crank, and the first sewing needle is mounted on the first needle holder; and a second connecting rod, where the first end of the second connecting rod is connected to the second end of a short crank, a second needle holder is mounted at the first end of the short crank, and the second sewing needle is mounted on the second needle holder.
- the automatic stitching apparatus further includes a motor apparatus
- the motor apparatus includes: a motor shaft; a large gear connected to one end of the motor shaft, where the large gear is provided with an eccentric mounting hole, and the eccentric mounting hole is configured to accommodate the second end of the first connecting rod; and a small needle eccentric wheel connected to the other end of the motor shaft, where the small needle eccentric wheel has an eccentric shaft end, and the eccentric shaft end is combined together with the second end of the second connecting rod.
- the automatic stitching apparatus further includes: a pinion handwheel meshed with the large gear.
- the distance between a thread cutting plane of the thread cutting apparatus or a thread cutting point position and a plate metal needle tip head of the plate metal needle is 10.1-20 mm, and the distance between the thread cutting plane or the thread cutting point position and a motion intersection point of the first sewing needle and the second sewing needle is 15.1-25 mm.
- the automatic stitching apparatus of the present invention after a sewing machine completes weaving, the fabric is transferred to the stitching apparatus by a transfer apparatus, and one end of the fabric is automatically stitched; and after the stitching is completed, the thread cutting apparatus automatically cuts off the sewing coil on the sewn fabric.
- the present invention has the following beneficial effects: in a weaving process, the opening of the fabric, such as the sock head of a sock, can be automatically sewn; and the thread cutting apparatus is provided, which can automatically cut off the sewing coil after the sewing is completed without the need for secondary processing of the fabric, thereby greatly improving the production efficiency, reducing the cost, and achieving the automated production.
- Sewing apparatus 1 plate metal needle 2, plate metal needle tip head 211, plate metal needle tip 212, plate metal needle body 213, plate metal needle mounting seat 22, first sewing needle 3, second sewing needle 4, motor apparatus 5, large gear 51, eccentric mounting hole 511, first connecting rod 52, long crank 53, pinion handwheel 54, small needle eccentric wheel 55, eccentric shaft end 551, second connecting rod 56, short crank 57, thread cutting apparatus 6, fixed cutting piece 61, movable cutting piece 62, bent hook piece 63, bent push piece 64, bent pull plate 65, eccentric tightening ring 66, plectrum 67, hanging seat 68, large angle pull plate 69, tension spring 70, cylinder 71, support plate 72, fixed seat 73, bolt 74, sewing coil 8, first needle holder 9, second needle holder 10, motor rotation direction 11, first connecting rod motion direction 12, first sewing needle motion direction 13, second connecting rod motion direction 14, second sewing needle motion direction 15, and sewing direction 16.
- the opening of the fabric is taken as an example for describing the apparatus of the present application below, and the present application is not limited to stitching of the opening of the fabric.
- the present invention provides an automatic stitching apparatus capable of automatically cutting threads, including a sewing apparatus 1 and a thread cutting apparatus 6.
- the sewing apparatus 1 includes: a first sewing needle 3, a second sewing needle 4 and a plate metal needle 2.
- the first sewing needle 3 is mounted on a first needle holder 9, the second sewing needle 4 is mounted on a second needle holder 10, and the first needle holder 9 and the second needle holder 10 are driven by a motor apparatus 5 to drive the first sewing needle 3 and the second sewing needle 4 to knot.
- a motor apparatus 5 to drive the first sewing needle 3 and the second sewing needle 4 to knot.
- first sewing needle motion direction moves along a direction 13 (first sewing needle motion direction)
- second sewing needle motion direction moves along a direction 15 (second sewing needle motion direction)
- motion planes in which the motion directions of the first sewing needle 3 and the second sewing needle 4 are located are perpendicular to each other.
- FIG. 4 shows a three-dimensional view of a motor apparatus 5 from one perspective.
- a large gear 51 is fixedly mounted on the motor apparatus 5, a protrusion is mounted on the large gear 51, and the protrusion is provided with an eccentric mounting hole 511.
- FIG. 5 shows a three-dimensional view of a motor apparatus 5 from one perspective.
- a small needle eccentric wheel 55 is fixedly mounted on the motor apparatus 5, and an eccentric shaft end 551 is fixed on the small needle eccentric wheel 55.
- the large gear 51 and the small needle eccentric wheel 55 can be mounted on both sides of the motor apparatus 5.
- the large gear 51 and the small needle eccentric wheel 55 can be mounted on a motor shaft. When the motor shaft rotates, the large gear 51 and the small needle eccentric wheel 55 can be driven to rotate simultaneously, thereby simultaneously actuating the first sewing needle 3 and the second sewing needle 4. In this way, the sewing adjustment can be carried out by manually rotating a pinion handwheel 54 (shown as follows).
- the sewing apparatus 1 includes a first connecting rod 52 and a long crank 53 which are mounted on a box body.
- the first needle holder 9 is mounted at the first end of the long crank 53, and the first sewing needle 3 is mounted on the first needle holder 9.
- the second end of the long crank 53 is connected to the first end of the first connecting rod 52, and the second end of the first connecting rod 52 is mounted on the eccentric mounting hole 511 on the large gear 51 of the motor apparatus 5.
- the motor apparatus 5 operates, the large gear 51 is driven to rotate clockwise in a direction 11 of the arrow, and the first connecting rod 52 swings up and down in a direction 12 (first connecting rod motion direction shown in FIG.
- the sewing apparatus 1 further includes a short crank 57 and a second connecting rod 56 which are also mounted on the box body.
- the second needle holder 10 is mounted on the first end of the short crank 57, and the second sewing needle 4 is mounted on the second needle holder 10.
- the second end of the short crank 57 is connected to the first end of the second connecting rod 56, the second end of the second connecting rod 56 is connected to the eccentric shaft end 551 of the small needle eccentric wheel 55, and the small needle eccentric wheel 55 is mounted on the motor apparatus 5 and is driven by the motor apparatus 5.
- the small needle eccentric wheel 55 When the motor apparatus 5 rotates, the small needle eccentric wheel 55 is driven to rotate in the direction 11 (motor rotation direction, counterclockwise direction), the second connecting rod 56 swings up and down and left and right in a direction 14 (shown in FIG. 8 ), the short crank 57 is driven to move, and the needle holder 9 moves back and forth in the direction 15, so that the second sewing needle 4 moves according to a fixed motion path.
- a pinion handwheel 54 is mounted on the box body and is meshed with the large gear 51.
- the handwheel 54 is manually rotated to drive the large gear 51 to rotate to cause the first sewing needle 3 and the second sewing needle 4 to move, thereby being convenient for observing whether the sewing position is correct and observe the sewing effect.
- the speed of the motor apparatus 5 (controlled by a textile machine computer control system) is configured to achieve a uniform speed and a stable motion effect.
- the sewing apparatus 1 further includes a plate metal needle mounting seat 22 and the plate metal needle 2, and the plate metal needle 2 is mounted on the plate metal needle mounting seat 22.
- the structure of the plate metal needle 2 is shown in FIG. 9 .
- the plate metal needle 2 includes a plate metal needle tip 212 and a plate metal needle body 213.
- the plate metal needle tip 212 is located at one end of the plate metal needle body 213, the plate metal needle tip 212 extends outward and gradually narrows on both sides, and the most front end of the plate metal needle tip 212 has a plate metal needle tip head 211.
- the plate metal needle 2 is located on the outer side of the first sewing needle 3, and the plate metal needle 2 is parallel to the plane in which the motion direction of the first sewing needle 3 is located, and perpendicular to the plane in which the motion direction of the second sewing needle 4 is located.
- the first sewing needle 3 and the second sewing needle 4 are interwoven with the plate metal needle 2 for sewing to form a chain stitch (sewing coil 8).
- the fabric to be stitched is placed in a stitching position.
- the stitching position is located below the first sewing needle 3, above the second sewing needle 4, and on the left side of the plate metal needle 2.
- the fabric to be stitched is supported by circular sewing teeth (not shown), and the sewing teeth can rotate or move, so that the sewing coil 8 is always placed in the stitching position.
- the motion direction of the fabric to be stitched is shown in the direction 16 (sewing direction) in the figure, which is consistent with the body direction of the plate metal needle 2.
- the first sewing needle 3 and the second sewing needle 4 are located in initial positions.
- the second sewing needle 4 moves upward (shown in the right view in FIG. 12 ) and passes through a sewing thread carried by the first sewing needle 3, the sewing thread is wound on the needle back of the second sewing needle 4 to form a loop, and the second sewing needle 4 passes through the coil of the fabric; and at the same time, the first sewing needle 3 moves backward (shown in the left view in FIG. 12 ), the thread wound on the second sewing needle is tightened, and the sewing thread on the first sewing needle 3 is wound on the plate metal needle 2.
- the first sewing needle 3 moves forward (shown in the left view in FIG. 14 ), the needle tip passes through the sewing thread carried on the second sewing needle, and the sewing thread is wound on the needle back of the first sewing needle 3 to form a loop; and at the same time, the second sewing needle 4 moves downward (shown in the right view in FIG. 14 ), the thread wound on the first sewing needle is tightened, the sewing thread on the second sewing needle is wound on the plate metal needle 2, and the sewing threads on the first sewing needle 3 and the second sewing needle 4 can be interlaced to form a knot.
- the automatic stitching apparatus of the present invention further includes a thread cutting apparatus 6. After the sewing is completed, the thread needs to be cut. As shown in FIG. 1 , FIG. 2 , FIG. 15 and FIG. 16 , the thread cutting apparatus 6 of the present invention includes: a fixed cutting piece 61 and a movable cutting piece 62.
- the fixed cutting piece 61 and the movable cutting piece 62 form a pair of scissors.
- the movable cutting piece 62 moves and overlaps with the fixed cutting piece 61, the thread is cut.
- the fixed cutting piece 61 is fixed on a fixed seat 73, the fixed cutting piece 61 remains stationary, the fixed seat 73 can be mounted on the box body of the sewing apparatus 1, and the fixed cutting piece 61 is located below the first sewing needle 3, thereby being convenient for cutting the thread.
- the movable cutting piece 62 is mounted at the upper end of a bent pull plate 65, the lower end of the bent pull plate 65 is connected to the upper end of a large angle pull plate 69, the lower end of the large angle pull plate 69 is connected to a cylinder 71, and the cylinder 71 extends and retracts to enable the movable cutting piece 62 to move.
- the thread cutting apparatus 6 When air enters the cylinder 71, the thread cutting apparatus 6 is in a closed state (as shown in FIG. 15 ). When air leaves the cylinder 71, the thread cutting apparatus 6 is in an open state (as shown in FIG. 16 ).
- the cylinder 71 is connected to the fixed seat 73 by a support plate 72.
- a tension spring 70 is mounted on the cylinder 71, and the tension spring 70 is connected between the lower end of the large angle pull plate 69 and the cylinder 71.
- the tension spring 70 By means of the tension of the tension spring 70, the scissors formed by the fixed cutting piece 61 and the movable cutting piece 62 can be quickly opened after being closed, so as to be prepared for the next thread cutting.
- the thread cutting apparatus 6 of the present invention further includes a bent hook piece 63 and a bent push piece 64.
- the bent hook piece 63 and the movable cutting piece 62 are attached to the upper end of the bent pull plate 65 and can move together.
- the tail ends of the bent hook piece 63 and the movable cutting piece 62 are fixed on a hanging seat 68 by a bolt 74, and the hanging seat 68 is fixed on the fixed seat 73.
- the bent hook piece 63 and the movable cutting piece 62 are driven to move around the bolt 74 together.
- the front end of the bent hook piece 63 is in the shape of a hook, which can hook the sewing coil 8 in the thread cutting process to prevent the sewing coil 8 from sliding out of the cutting position.
- the bent push piece 64 is mounted on the outer side of the bent hook piece 63 and is attached to the bent hook piece 63, and the bent push piece 64 and the bent hook piece 63 can move oppositely.
- the middle section of the bent push piece 64 can also be fixed on the hanging seat 68 by the bolt 74.
- the tail end of the bent push piece 64 has a forked structure, and the forked structure accommodates the first end of a plectrum 67.
- the plectrum 67 has an L-shaped structure, and the first end of the plectrum 67 is clamped in the forked structure at the tail end of the bent push piece 64.
- the second end of the plectrum 67 is clamped between an eccentric tightening ring 66 of the bent pull plate 65 and the upper end of the large angle pull plate 69 (that is, the joint between the large angle pull plate 69 and the bent pull plate 65), and the motion route of the second end of the plectrum 67 is also located between the eccentric tightening ring 66 and the upper end of the large angle pull plate 69.
- bent push piece 64 and the bent hook piece 63 move in opposite motion directions, as described in detail below.
- the movable cutting piece 62 and the bent hook piece 63 are opened.
- the cylinder 71 is propelled to push the lower end of the large angle pull plate 69, the upper end of the large angle pull plate 69 descends, the lower end of the bent pull plate 65 is pulled, the bent pull plate 65 descends, and the movable cutting piece 62 and the bent hook piece 63 are driven to approach the middle.
- the bent pull plate 65 descends, the eccentric tightening ring 66 descends, and the second end of the plectrum 67 is pressed down.
- the first end of the plectrum 67 pushes the forked structure at the tail end of the bent push piece 64 to swing leftward, and the bent push piece 64 approaches the middle to achieve thread cutting.
- the cylinder 71 is deflated and evacuated outward, the lower end of the large angle pull plate 69 is pulled, the upper end of the large angle pull plate 69 rises, and the upper end raises the second end of the plectrum 67.
- the first end of the plectrum 67 pushes the forked structure at the tail end of the bent push piece 64 to swing rightward, and the bent push piece 64 moves outward.
- the upper end of the large angle pull plate 69 rises, the lower end of the bent pull plate 65 is pushed, the bent pull plate 65 rises, and the movable cutting piece 62 and the bent hook piece 63 are pushed to move outward, thereby achieving the opening of the thread cutting apparatus 6. From FIG. 16 , it can be seen that the positions of the bent push piece 64 and the bent hook piece 63 may be staggered.
- the front end of the bent push piece 64 and the front end of the bent hook piece 63 are similar in the shape of a bent hook and both have an inward bent hook (when the front end of the bent push piece 64 and the bent hook piece 63 are opened, the bent hook directions of both are opposite to each other) to play the following roles: before the thread cutting action is completed, the bent push piece 64 pushes the sewing coil, at this time, the movable cutting piece 62 and the bent hook piece 63 are not closed with the fixed cutting piece 61, some space is left, and the bent push piece 64 can push out the sewing coil for a certain length, thereby leaving a safe sewing coil length.
- the front end of the bent hook piece 63 is in the shape of a hook, which can hook the sewing coil 8 to prevent the sewing coil 8 from sliding out of the cutting position.
- the bent push piece 64 By the bent push piece 64, after the thread cutting action is completed, the lengths of the sewing coil left at both ends of the opening of the fabric are consistent, and the lengths of the sewing coil left at both ends of the opening of the fabric may be controlled by adjusting the position of the eccentric tightening ring 66 (that is, the route range of the plectrum 67), which may be long or short.
- the thread cutting apparatus 6 is placed below the sewing point of the sewing apparatus 1 in the illustrated embodiments, and may also be placed above or on both sides.
- the distance between a thread cutting plane of the thread cutting apparatus 6 or a thread cutting point position and the plate metal needle tip head 211 is preferably 10.1-20 mm, and the distance between the thread cutting plane or the thread cutting point position and a motion intersection point of the first sewing needle 3 and the second sewing needle 4 is preferably 15.1-25 mm. If the distance is too close, there will be mutual interference in mechanical structures. If the distance is too far, the thread cutting apparatus will be unable to cut the thread and lose the thread cutting function.
- the present invention achieves the function of automatically sewing the opening of a cylindrical fabric such as a sock; after the sewing is completed, the sewing coil can be automatically cut off, and the length dimension of the cut-off coil can be adjusted freely, thereby greatly improving the production efficiency of the fabric; there is no need to perform secondary processing on the fabric to form a finished product, thereby greatly reducing the production cost, and achieving the purpose of automated production; and the sewing speed is high, the sewing is accurate, and the qualification rate of the fabric is greatly improved.
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- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
Description
- The present invention relates to sewing, more specifically to a thread cutting apparatus and an automatic stitching apparatus.
- At present, the technology of sewing machines can only complete basic weaving tasks. For example, a cylindrical fabric can only be woven as a whole, and one end of the fabric cannot be automatically stitched. The completed woven fabric needs to be placed separately on another stitching device for secondary processing and stitching, so as to complete all processes of the fabric. During this period, multiple workers need to cooperate with each other to complete all processes. At present, the production processes cannot improve the production efficiency or reduce the production cost.
- In view of the problems in the background art, the present invention provides a thread cutting apparatus, including: a fixed seat; a fixed cutting piece fixed on the fixed seat; a movable cutting piece fixed on the fixed seat by a bolt; a bent pull plate, where the upper end of the bent pull plate is combined with the tail end of the movable cutting piece; and a large angle pull plate, where the upper end of the large angle pull plate is combined with the lower end of the bent pull plate. When the lower end of the large angle pull plate is pushed and pulled, the movable cutting piece is opened and closed relative to the fixed cutting piece.
- Preferably, the thread cutting apparatus further includes: a bent hook piece attached to and mounted together with the movable cutting piece and moving together with the movable cutting piece; a bent push piece fixed on the fixed seat by the bolt; and a plectrum, where the first end of the plectrum is combined with the tail end of the bent push piece to push and pull the bent push piece, and the second end of the plectrum is capable of moving between an eccentric tightening ring on the bent pull plate and the upper end of the large angle pull plate.
- Preferably, the heads of the bent hook piece and the bent push piece are respectively in a bent hook shape, and bent hooks are opposite.
- Preferably, when the lower end of the large angle pull plate is pushed, the movable cutting piece is close to the fixed cutting piece, and the plectrum pushes the bent push piece to approach the middle; before a thread is cut, the bent push piece first contacts and pushes out a certain length of the thread to be cut, then the bent hook piece contacts and tightens the thread to be cut, and the movable cutting piece and the fixed cutting piece cut the thread; and when the lower end of the large angle pull plate is pulled, the bent hook piece and the movable cutting piece are away from the fixed cutting piece, and the bent push piece and the bent hook piece move in opposite directions.
- Preferably, the thread cutting apparatus further includes: a cylinder connected to the lower end of the large angle pull plate; and a tension spring connected to the cylinder and the large angle pull plate.
- The thread cutting apparatus provided by the present invention is ingenious and compact in structure and can highly cooperate with a sewing machine for thread cutting.
- The present invention further provides an automatic stitching apparatus, including the foregoing thread cutting apparatus; and a sewing apparatus provided with a first sewing needle, a second sewing needle and a plate metal needle that cooperate with each other for knotting. The position of the thread cutting apparatus is close to a sewing point of the sewing apparatus, and after the sewing of the sewing apparatus is completed, the thread on a sewing coil is cut.
- Preferably, the sewing apparatus further includes: a first connecting rod, where the first end of the first connecting rod is connected to the second end of a long crank, a first needle holder is mounted at the first end of the long crank, and the first sewing needle is mounted on the first needle holder; and a second connecting rod, where the first end of the second connecting rod is connected to the second end of a short crank, a second needle holder is mounted at the first end of the short crank, and the second sewing needle is mounted on the second needle holder.
- Preferably, the automatic stitching apparatus further includes a motor apparatus, and the motor apparatus includes: a motor shaft; a large gear connected to one end of the motor shaft, where the large gear is provided with an eccentric mounting hole, and the eccentric mounting hole is configured to accommodate the second end of the first connecting rod; and a small needle eccentric wheel connected to the other end of the motor shaft, where the small needle eccentric wheel has an eccentric shaft end, and the eccentric shaft end is combined together with the second end of the second connecting rod.
- Preferably, the automatic stitching apparatus further includes: a pinion handwheel meshed with the large gear.
- Preferably, the distance between a thread cutting plane of the thread cutting apparatus or a thread cutting point position and a plate metal needle tip head of the plate metal needle is 10.1-20 mm, and the distance between the thread cutting plane or the thread cutting point position and a motion intersection point of the first sewing needle and the second sewing needle is 15.1-25 mm.
- According to the automatic stitching apparatus of the present invention, after a sewing machine completes weaving, the fabric is transferred to the stitching apparatus by a transfer apparatus, and one end of the fabric is automatically stitched; and after the stitching is completed, the thread cutting apparatus automatically cuts off the sewing coil on the sewn fabric.
- The present invention has the following beneficial effects: in a weaving process, the opening of the fabric, such as the sock head of a sock, can be automatically sewn; and the thread cutting apparatus is provided, which can automatically cut off the sewing coil after the sewing is completed without the need for secondary processing of the fabric, thereby greatly improving the production efficiency, reducing the cost, and achieving the automated production.
- In order to make the present invention easier to understand, the present invention is described in more detail with reference to specific embodiments shown in the accompanying drawings. These accompanying drawings only describe typical embodiments of the present invention and should not be considered as limiting the scope of protection of the present invention.
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FIG. 1 is a three-dimensional view of an automatic stitching apparatus of the present invention. -
FIG. 2 is a front view of an automatic stitching apparatus of the present invention. -
FIG. 3 is a three-dimensional view of an automatic stitching apparatus of the present invention from another perspective. -
FIG. 4 is a three-dimensional view of a motor apparatus of an automatic stitching apparatus of the present invention from one perspective. -
FIG. 5 is a three-dimensional view of a motor apparatus of an automatic stitching apparatus of the present invention from another perspective. -
FIG. 6 is a left view of the automatic stitching apparatus of the present invention shown inFIG. 2 . -
FIG. 7 is a right view of the automatic stitching apparatus of the present invention shown inFIG. 2 . -
FIG. 8 is a rear view of the automatic stitching apparatus of the present invention shown inFIG. 2 . -
FIG. 9 is a schematic structural view of a plate metal needle of an automatic stitching apparatus of the present invention. -
FIG. 10 is a top view of the automatic stitching apparatus of the present invention shown inFIG. 2 . -
FIG. 11 to FIG. 14 show motion processes of sewing needles and a plate metal needle of the present invention. -
FIG. 15 is a schematic structural view of a thread cutting apparatus in an open state of an automatic stitching apparatus of the present invention. -
FIG. 16 is a schematic structural view of a thread cutting apparatus in a closed state of an automatic stitching apparatus of the present invention. - Sewing apparatus 1,
plate metal needle 2, plate metalneedle tip head 211, platemetal needle tip 212, platemetal needle body 213, plate metalneedle mounting seat 22,first sewing needle 3,second sewing needle 4,motor apparatus 5,large gear 51, eccentric mountinghole 511, first connectingrod 52, long crank 53,pinion handwheel 54, small needleeccentric wheel 55,eccentric shaft end 551, second connectingrod 56, short crank 57,thread cutting apparatus 6, fixedcutting piece 61,movable cutting piece 62,bent hook piece 63,bent push piece 64,bent pull plate 65,eccentric tightening ring 66,plectrum 67, hangingseat 68, large angle pull plate 69,tension spring 70,cylinder 71,support plate 72, fixedseat 73,bolt 74,sewing coil 8,first needle holder 9,second needle holder 10,motor rotation direction 11, first connectingrod motion direction 12, first sewingneedle motion direction 13, second connectingrod motion direction 14, second sewingneedle motion direction 15, andsewing direction 16. - Embodiments of the present invention are described with reference to the accompanying drawings below, so that those skilled in the art can better understand and implement the present invention. However, the present invention is not limited by the listed embodiments. In the case of no conflict, the following embodiments and technical features in the embodiments can be combined with each other, where the same components are represented by the same reference numerals.
- The opening of the fabric is taken as an example for describing the apparatus of the present application below, and the present application is not limited to stitching of the opening of the fabric.
- As shown in
FIG. 1 andFIG. 2 , the present invention provides an automatic stitching apparatus capable of automatically cutting threads, including a sewing apparatus 1 and athread cutting apparatus 6. - The sewing apparatus 1 includes: a
first sewing needle 3, asecond sewing needle 4 and aplate metal needle 2. The first sewing needle 3 (large needle) and the second sewing needle 4 (small needle) knot with each other and cooperate with theplate metal needle 2 to form a sewing coil 8 (shown inFIG. 10 ), so as to sew the opening of the fabric. Thefirst sewing needle 3 is mounted on afirst needle holder 9, thesecond sewing needle 4 is mounted on asecond needle holder 10, and thefirst needle holder 9 and thesecond needle holder 10 are driven by amotor apparatus 5 to drive thefirst sewing needle 3 and thesecond sewing needle 4 to knot. As shown inFIG. 3 , thefirst sewing needle 3 moves along a direction 13 (first sewing needle motion direction), thesecond sewing needle 4 moves along a direction 15 (second sewing needle motion direction), and motion planes in which the motion directions of thefirst sewing needle 3 and thesecond sewing needle 4 are located are perpendicular to each other. -
FIG. 4 shows a three-dimensional view of amotor apparatus 5 from one perspective. Alarge gear 51 is fixedly mounted on themotor apparatus 5, a protrusion is mounted on thelarge gear 51, and the protrusion is provided with aneccentric mounting hole 511. -
FIG. 5 shows a three-dimensional view of amotor apparatus 5 from one perspective. A small needleeccentric wheel 55 is fixedly mounted on themotor apparatus 5, and aneccentric shaft end 551 is fixed on the small needleeccentric wheel 55. Thelarge gear 51 and the small needleeccentric wheel 55 can be mounted on both sides of themotor apparatus 5. - The
large gear 51 and the small needleeccentric wheel 55 can be mounted on a motor shaft. When the motor shaft rotates, thelarge gear 51 and the small needleeccentric wheel 55 can be driven to rotate simultaneously, thereby simultaneously actuating thefirst sewing needle 3 and thesecond sewing needle 4. In this way, the sewing adjustment can be carried out by manually rotating a pinion handwheel 54 (shown as follows). - As shown in
FIG. 6 , the sewing apparatus 1 includes a first connectingrod 52 and along crank 53 which are mounted on a box body. Thefirst needle holder 9 is mounted at the first end of thelong crank 53, and thefirst sewing needle 3 is mounted on thefirst needle holder 9. The second end of thelong crank 53 is connected to the first end of the first connectingrod 52, and the second end of the first connectingrod 52 is mounted on theeccentric mounting hole 511 on thelarge gear 51 of themotor apparatus 5. When themotor apparatus 5 operates, thelarge gear 51 is driven to rotate clockwise in adirection 11 of the arrow, and the first connectingrod 52 swings up and down in a direction 12 (first connecting rod motion direction shown inFIG. 8 ), thereby driving the second end of thelong crank 53 to move back and forth in adirection 16. When theeccentric mounting hole 511 operates to the lowest position, the second end of thelong crank 53 is pulled and pressed down. When the eccentric mountinghole 511 operates to the highest position, the second end of thelong crank 53 restores to the original position. In this way, thefirst needle holder 9 on the first end of the first connectingrod 52 moves back and forth in thedirection 13, so that thefirst sewing needle 3 moves according to a fixed motion path. - As shown in
FIG. 7 , the sewing apparatus 1 further includes a short crank 57 and a second connectingrod 56 which are also mounted on the box body. Thesecond needle holder 10 is mounted on the first end of the short crank 57, and thesecond sewing needle 4 is mounted on thesecond needle holder 10. The second end of theshort crank 57 is connected to the first end of the second connectingrod 56, the second end of the second connectingrod 56 is connected to theeccentric shaft end 551 of the small needleeccentric wheel 55, and the small needleeccentric wheel 55 is mounted on themotor apparatus 5 and is driven by themotor apparatus 5. When themotor apparatus 5 rotates, the small needleeccentric wheel 55 is driven to rotate in the direction 11 (motor rotation direction, counterclockwise direction), the second connectingrod 56 swings up and down and left and right in a direction 14 (shown inFIG. 8 ), theshort crank 57 is driven to move, and theneedle holder 9 moves back and forth in thedirection 15, so that thesecond sewing needle 4 moves according to a fixed motion path. - Preferably, as shown in
FIG. 6 andFIG. 8 , apinion handwheel 54 is mounted on the box body and is meshed with thelarge gear 51. In the early stage of debugging, thehandwheel 54 is manually rotated to drive thelarge gear 51 to rotate to cause thefirst sewing needle 3 and thesecond sewing needle 4 to move, thereby being convenient for observing whether the sewing position is correct and observe the sewing effect. After debugging, the speed of the motor apparatus 5 (controlled by a textile machine computer control system) is configured to achieve a uniform speed and a stable motion effect. - As shown in
FIG. 1 to FIG. 3 , the sewing apparatus 1 further includes a plate metalneedle mounting seat 22 and theplate metal needle 2, and theplate metal needle 2 is mounted on the plate metalneedle mounting seat 22. The structure of theplate metal needle 2 is shown inFIG. 9 . Theplate metal needle 2 includes a platemetal needle tip 212 and a platemetal needle body 213. The platemetal needle tip 212 is located at one end of the platemetal needle body 213, the platemetal needle tip 212 extends outward and gradually narrows on both sides, and the most front end of the platemetal needle tip 212 has a plate metalneedle tip head 211. Theplate metal needle 2 is located on the outer side of thefirst sewing needle 3, and theplate metal needle 2 is parallel to the plane in which the motion direction of thefirst sewing needle 3 is located, and perpendicular to the plane in which the motion direction of thesecond sewing needle 4 is located. Thefirst sewing needle 3 and thesecond sewing needle 4 are interwoven with theplate metal needle 2 for sewing to form a chain stitch (sewing coil 8). - The motion processes of the
first sewing needle 3 and thesecond sewing needle 4 are described with reference toFIG. 10 to FIG. 14 . - As shown in
FIG. 10 , the fabric to be stitched is placed in a stitching position. The stitching position is located below thefirst sewing needle 3, above thesecond sewing needle 4, and on the left side of theplate metal needle 2. The fabric to be stitched is supported by circular sewing teeth (not shown), and the sewing teeth can rotate or move, so that thesewing coil 8 is always placed in the stitching position. According to the approximate motion direction of the fabric, the motion direction of the fabric to be stitched is shown in the direction 16 (sewing direction) in the figure, which is consistent with the body direction of theplate metal needle 2. - As shown in two views in a 90 degree direction in
FIG. 11 , before sewing, thefirst sewing needle 3 and thesecond sewing needle 4 are located in initial positions. - As shown in two views in a 90 degree direction in
FIG. 12 , when sewing, thesecond sewing needle 4 moves upward (shown in the right view inFIG. 12 ) and passes through a sewing thread carried by thefirst sewing needle 3, the sewing thread is wound on the needle back of thesecond sewing needle 4 to form a loop, and thesecond sewing needle 4 passes through the coil of the fabric; and at the same time, thefirst sewing needle 3 moves backward (shown in the left view inFIG. 12 ), the thread wound on the second sewing needle is tightened, and the sewing thread on thefirst sewing needle 3 is wound on theplate metal needle 2. - As shown in two views in a 90 degree direction in
FIG. 13 , after both thefirst sewing needle 3 and thesecond sewing needle 4 move to the other end, as shown inFIG. 14 , thefirst sewing needle 3 moves forward (shown in the left view inFIG. 14 ), the needle tip passes through the sewing thread carried on the second sewing needle, and the sewing thread is wound on the needle back of thefirst sewing needle 3 to form a loop; and at the same time, thesecond sewing needle 4 moves downward (shown in the right view inFIG. 14 ), the thread wound on the first sewing needle is tightened, the sewing thread on the second sewing needle is wound on theplate metal needle 2, and the sewing threads on thefirst sewing needle 3 and thesecond sewing needle 4 can be interlaced to form a knot. - The automatic stitching apparatus of the present invention further includes a
thread cutting apparatus 6. After the sewing is completed, the thread needs to be cut. As shown inFIG. 1 ,FIG. 2 ,FIG. 15 and FIG. 16 , thethread cutting apparatus 6 of the present invention includes: a fixedcutting piece 61 and amovable cutting piece 62. - The fixed
cutting piece 61 and themovable cutting piece 62 form a pair of scissors. When themovable cutting piece 62 moves and overlaps with the fixedcutting piece 61, the thread is cut. - The fixed
cutting piece 61 is fixed on a fixedseat 73, the fixedcutting piece 61 remains stationary, the fixedseat 73 can be mounted on the box body of the sewing apparatus 1, and the fixedcutting piece 61 is located below thefirst sewing needle 3, thereby being convenient for cutting the thread. - The
movable cutting piece 62 is mounted at the upper end of abent pull plate 65, the lower end of thebent pull plate 65 is connected to the upper end of a large angle pull plate 69, the lower end of the large angle pull plate 69 is connected to acylinder 71, and thecylinder 71 extends and retracts to enable themovable cutting piece 62 to move. When air enters thecylinder 71, thethread cutting apparatus 6 is in a closed state (as shown inFIG. 15 ). When air leaves thecylinder 71, thethread cutting apparatus 6 is in an open state (as shown inFIG. 16 ). Thecylinder 71 is connected to the fixedseat 73 by asupport plate 72. - Preferably, in order to ensure that the
thread cutting apparatus 6 can be quickly opened when air leaves, atension spring 70 is mounted on thecylinder 71, and thetension spring 70 is connected between the lower end of the large angle pull plate 69 and thecylinder 71. By means of the tension of thetension spring 70, the scissors formed by the fixedcutting piece 61 and themovable cutting piece 62 can be quickly opened after being closed, so as to be prepared for the next thread cutting. - Preferably, the
thread cutting apparatus 6 of the present invention further includes abent hook piece 63 and abent push piece 64. Thebent hook piece 63 and themovable cutting piece 62 are attached to the upper end of thebent pull plate 65 and can move together. The tail ends of thebent hook piece 63 and themovable cutting piece 62 are fixed on a hangingseat 68 by abolt 74, and the hangingseat 68 is fixed on the fixedseat 73. When thecylinder 71 moves, thebent hook piece 63 and themovable cutting piece 62 are driven to move around thebolt 74 together. The front end of thebent hook piece 63 is in the shape of a hook, which can hook thesewing coil 8 in the thread cutting process to prevent thesewing coil 8 from sliding out of the cutting position. - The
bent push piece 64 is mounted on the outer side of thebent hook piece 63 and is attached to thebent hook piece 63, and thebent push piece 64 and thebent hook piece 63 can move oppositely. The middle section of thebent push piece 64 can also be fixed on the hangingseat 68 by thebolt 74. The tail end of thebent push piece 64 has a forked structure, and the forked structure accommodates the first end of aplectrum 67. - The
plectrum 67 has an L-shaped structure, and the first end of theplectrum 67 is clamped in the forked structure at the tail end of thebent push piece 64. The second end of theplectrum 67 is clamped between aneccentric tightening ring 66 of thebent pull plate 65 and the upper end of the large angle pull plate 69 (that is, the joint between the large angle pull plate 69 and the bent pull plate 65), and the motion route of the second end of theplectrum 67 is also located between theeccentric tightening ring 66 and the upper end of the large angle pull plate 69. - The
bent push piece 64 and thebent hook piece 63 move in opposite motion directions, as described in detail below. - As shown in
FIG. 15 and FIG. 16 , before thread cutting, themovable cutting piece 62 and thebent hook piece 63 are opened. When thread cutting is required, thecylinder 71 is propelled to push the lower end of the large angle pull plate 69, the upper end of the large angle pull plate 69 descends, the lower end of thebent pull plate 65 is pulled, thebent pull plate 65 descends, and themovable cutting piece 62 and thebent hook piece 63 are driven to approach the middle. On the other hand, when thebent pull plate 65 descends, theeccentric tightening ring 66 descends, and the second end of theplectrum 67 is pressed down. Correspondingly, the first end of theplectrum 67 pushes the forked structure at the tail end of thebent push piece 64 to swing leftward, and thebent push piece 64 approaches the middle to achieve thread cutting. - After the thread cutting is completed, the
cylinder 71 is deflated and evacuated outward, the lower end of the large angle pull plate 69 is pulled, the upper end of the large angle pull plate 69 rises, and the upper end raises the second end of theplectrum 67. Correspondingly, the first end of theplectrum 67 pushes the forked structure at the tail end of thebent push piece 64 to swing rightward, and thebent push piece 64 moves outward. At the same time, the upper end of the large angle pull plate 69 rises, the lower end of thebent pull plate 65 is pushed, thebent pull plate 65 rises, and themovable cutting piece 62 and thebent hook piece 63 are pushed to move outward, thereby achieving the opening of thethread cutting apparatus 6. FromFIG. 16 , it can be seen that the positions of thebent push piece 64 and thebent hook piece 63 may be staggered. - The front end of the
bent push piece 64 and the front end of thebent hook piece 63 are similar in the shape of a bent hook and both have an inward bent hook (when the front end of thebent push piece 64 and thebent hook piece 63 are opened, the bent hook directions of both are opposite to each other) to play the following roles: before the thread cutting action is completed, thebent push piece 64 pushes the sewing coil, at this time, themovable cutting piece 62 and thebent hook piece 63 are not closed with the fixedcutting piece 61, some space is left, and thebent push piece 64 can push out the sewing coil for a certain length, thereby leaving a safe sewing coil length. In the thread cutting process, the front end of thebent hook piece 63 is in the shape of a hook, which can hook thesewing coil 8 to prevent thesewing coil 8 from sliding out of the cutting position. By thebent push piece 64, after the thread cutting action is completed, the lengths of the sewing coil left at both ends of the opening of the fabric are consistent, and the lengths of the sewing coil left at both ends of the opening of the fabric may be controlled by adjusting the position of the eccentric tightening ring 66 (that is, the route range of the plectrum 67), which may be long or short. - The
thread cutting apparatus 6 is placed below the sewing point of the sewing apparatus 1 in the illustrated embodiments, and may also be placed above or on both sides. The distance between a thread cutting plane of thethread cutting apparatus 6 or a thread cutting point position and the plate metalneedle tip head 211 is preferably 10.1-20 mm, and the distance between the thread cutting plane or the thread cutting point position and a motion intersection point of thefirst sewing needle 3 and thesecond sewing needle 4 is preferably 15.1-25 mm. If the distance is too close, there will be mutual interference in mechanical structures. If the distance is too far, the thread cutting apparatus will be unable to cut the thread and lose the thread cutting function. - The present invention achieves the function of automatically sewing the opening of a cylindrical fabric such as a sock; after the sewing is completed, the sewing coil can be automatically cut off, and the length dimension of the cut-off coil can be adjusted freely, thereby greatly improving the production efficiency of the fabric; there is no need to perform secondary processing on the fabric to form a finished product, thereby greatly reducing the production cost, and achieving the purpose of automated production; and the sewing speed is high, the sewing is accurate, and the qualification rate of the fabric is greatly improved.
- The above embodiments are only the preferred specific embodiments of the present invention. This specification uses the phrases "in one embodiment", "in another embodiment", "in further another embodiment", or "in other embodiments", which can all refer to one or more of the same or different embodiments according to the present disclosure. General changes and replacements made by those skilled in the art within the scope of the technical solution of the present invention should be included in the scope of protection of the present invention.
Claims (10)
- A thread cutting apparatus, comprising:a fixed seat (73);a fixed cutting piece (61) fixed on the fixed seat (73);a movable cutting piece (62) fixed on the fixed seat (73) by a bolt (74);a bent pull plate (65), wherein the upper end of the bent pull plate (65) is combined with the tail end of the movable cutting piece (62); anda large angle pull plate (69), wherein the upper end of the large angle pull plate (69) is combined with the lower end of the bent pull plate (65); andwhen the lower end of the large angle pull plate (69) is pushed and pulled, the movable cutting piece (62) is opened and closed relative to the fixed cutting piece (61).
- The thread cutting apparatus according to claim 1, further comprising:a bent hook piece (63) attached to and mounted together with the movable cutting piece (62) and moving together with the movable cutting piece (62);a bent push piece (64) fixed on the fixed seat (73) by the bolt (74); anda plectrum (67), wherein the first end of the plectrum (67) is combined with the tail end of the bent push piece (64) to push and pull the bent push piece (64), and the second end of the plectrum (67) is capable of moving between an eccentric tightening ring (66) on the bent pull plate (65) and the upper end of the large angle pull plate (69).
- The thread cutting apparatus according to claim 2, wherein
the heads of the bent hook piece (63) and the bent push piece (64) are respectively in a bent hook shape, and bent hooks are opposite. - The thread cutting apparatus according to claim 3, whereinwhen the lower end of the large angle pull plate (69) is pushed, the movable cutting piece (62) is close to the fixed cutting piece (61), and the plectrum (67) pushes the bent push piece (64) to approach the middle; before a thread is cut, the bent push piece (64) first contacts and pushes out a certain length of the thread to be cut, then the bent hook piece (63) contacts and tightens the thread to be cut, and the movable cutting piece (62) and the fixed cutting piece (61) cut the thread; andwhen the lower end of the large angle pull plate (69) is pulled, the bent hook piece (63) and the movable cutting piece (62) are away from the fixed cutting piece (61), and the bent push piece (64) and the bent hook piece (63) move in opposite directions.
- The thread cutting apparatus according to claim 4, further comprising:a cylinder (71) connected to the lower end of the large angle pull plate (69); anda tension spring (70) connected to the cylinder (71) and the large angle pull plate (69).
- An automatic stitching apparatus, comprising:the thread cutting apparatus (6) according to any one of claims 1 to 4; anda sewing apparatus (1) provided with a first sewing needle (3), a second sewing needle (4) and a plate metal needle (2) that cooperate with each other for knotting; whereinthe position of the thread cutting apparatus (6) is close to a sewing point of the sewing apparatus (1), and after the sewing of the sewing apparatus (1) is completed, the thread on a sewing coil (8) is cut.
- The automatic stitching apparatus according to claim 6, wherein the sewing apparatus (1) further comprises:a first connecting rod (52), wherein the first end of the first connecting rod (52) is connected to the second end of a long crank (53), a first needle holder (9) is mounted at the first end of the long crank (53), and the first sewing needle (3) is mounted on the first needle holder (9); anda second connecting rod (56), wherein the first end of the second connecting rod (56) is connected to the second end of a short crank (57), a second needle holder (10) is mounted at the first end of the short crank (57), and the second sewing needle (4) is mounted on the second needle holder (10).
- The automatic stitching apparatus according to claim 7, further comprising a motor apparatus (5), wherein the motor apparatus (5) comprises:a motor shaft;a large gear (51) connected to one end of the motor shaft, wherein the large gear (51) is provided with an eccentric mounting hole (511), and the eccentric mounting hole (511) is configured to accommodate the second end of the first connecting rod (52); anda small needle eccentric wheel (55) connected to the other end of the motor shaft, wherein the small needle eccentric wheel (55) has an eccentric shaft end (551), and the eccentric shaft end (551) is combined together with the second end of the second connecting rod (56).
- The automatic stitching apparatus according to claim 8, further comprising:
a pinion handwheel (54) meshed with the large gear (51). - The automatic stitching apparatus according to claim 6, wherein
the distance between a thread cutting plane of the thread cutting apparatus (6) or a thread cutting point position and a plate metal needle tip head (211) of the plate metal needle (2) is 10.1-20 mm, and the distance between the thread cutting plane or the thread cutting point position and a motion intersection point of the first sewing needle (3) and the second sewing needle (4) is 15.1-25 mm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202222797185.6U CN218666636U (en) | 2022-10-24 | 2022-10-24 | Thread trimming device and automatic sewing device |
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EP4361334A1 true EP4361334A1 (en) | 2024-05-01 |
Family
ID=85565217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP23204458.6A Pending EP4361334A1 (en) | 2022-10-24 | 2023-10-18 | Thread cutting apparatus and automatic stitching apparatus |
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EP (1) | EP4361334A1 (en) |
CN (1) | CN218666636U (en) |
WO (1) | WO2024087592A1 (en) |
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CN218666636U (en) * | 2022-10-24 | 2023-03-21 | 浙江博睿智能科技有限公司 | Thread trimming device and automatic sewing device |
Citations (5)
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DE3923074A1 (en) * | 1988-07-15 | 1990-01-18 | Juki Kk | Thread cutting-off device for a standard sewing machine |
EP2034074A1 (en) * | 2007-09-05 | 2009-03-11 | Brother Kogyo Kabushiki Kaisha | Thread cutting apparatus for sewing machine |
WO2009144049A1 (en) * | 2008-05-30 | 2009-12-03 | Lonati S.P.A. | Sewing or looping head, particularly for automated closing of tubular knitted articles at an axial end thereof |
EP3514277A1 (en) * | 2018-01-18 | 2019-07-24 | Da Kong Enterprise Co., Ltd. | Sewing machine and the method for closing an open end of a tubular knitted article |
US20200308746A1 (en) * | 2019-03-28 | 2020-10-01 | Da Kong Enterprise Co., Ltd. | Sewing or Looping Device for Closing a Tubular Knitted Article |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4940799B2 (en) * | 2006-07-12 | 2012-05-30 | ブラザー工業株式会社 | Thread trimming device for eyelet sewing machine |
CN108360150A (en) * | 2018-04-19 | 2018-08-03 | 浙江叶晓针织机械有限公司 | Toe linking device |
CN209836487U (en) * | 2019-04-03 | 2019-12-24 | 宁波市镇海同欣机电科技有限公司 | Automatic thread end cutting device of bar tacking machine |
CN212247612U (en) * | 2020-04-17 | 2020-12-29 | 浙江宝耀智能科技有限公司 | Lifting scissors device |
CN218666636U (en) * | 2022-10-24 | 2023-03-21 | 浙江博睿智能科技有限公司 | Thread trimming device and automatic sewing device |
-
2022
- 2022-10-24 CN CN202222797185.6U patent/CN218666636U/en active Active
-
2023
- 2023-05-17 WO PCT/CN2023/094740 patent/WO2024087592A1/en unknown
- 2023-10-18 EP EP23204458.6A patent/EP4361334A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3923074A1 (en) * | 1988-07-15 | 1990-01-18 | Juki Kk | Thread cutting-off device for a standard sewing machine |
EP2034074A1 (en) * | 2007-09-05 | 2009-03-11 | Brother Kogyo Kabushiki Kaisha | Thread cutting apparatus for sewing machine |
WO2009144049A1 (en) * | 2008-05-30 | 2009-12-03 | Lonati S.P.A. | Sewing or looping head, particularly for automated closing of tubular knitted articles at an axial end thereof |
EP3514277A1 (en) * | 2018-01-18 | 2019-07-24 | Da Kong Enterprise Co., Ltd. | Sewing machine and the method for closing an open end of a tubular knitted article |
US20200308746A1 (en) * | 2019-03-28 | 2020-10-01 | Da Kong Enterprise Co., Ltd. | Sewing or Looping Device for Closing a Tubular Knitted Article |
Also Published As
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CN218666636U (en) | 2023-03-21 |
WO2024087592A1 (en) | 2024-05-02 |
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