TW202104710A - Stitching and cutting device for tubular knitted objects - Google Patents

Abstract

A stitching and cutting device for tubular knitted objects, which is installed in a body and includes a driving mechanism having a power source, a linkage assembly, a rotating shaft and a swing arm, the linkage assembly is connected to and is driven by the power source, and is fixed to the rotating shaft, so as to drive the rotating shaft to rotate, the swing arm is combined with the rotating shaft so that the swing arm is pivoted with the rotating shaft as the pivoted center, and a cutting unit connected to and driven by the swing arm to move along an arc path, so as to reduce the volume of a knitting machine and improve the cutting efficiency.

Description

Stitching and cutting device for tubular knitted articles

The invention relates to a sewing and cutting device for tubular knitted articles.

The international publication number of the conventional sewing or crochet head is WO2009/144049. Since the chain stitch wound on the guide needle is drawn from the end of the guide needle, the cutting unit must be perpendicular to the chain stitch In order to set the cutting unit at the position where the chain stitches are cut vertically, a cutting space is generally reserved on the body, resulting in a huge body.

The purpose of the present invention is to solve the defect that the machine body of the knitting machine must be equipped with a cutting device, thereby reducing the volume of the knitting machine and being cut reliably, thereby improving the cutting efficiency.

To achieve the foregoing objective, the present invention provides a sewing and cutting device for tubular knitted articles for installation in a body, including:

A driving mechanism, the driving mechanism having a power source, a connecting rod group, a rotating shaft, and a swing arm, the connecting rod group is connected to the power source and driven by the power source, the connecting rod group is fixedly combined with the rotating shaft , To drive the rotating shaft to pivot, the swing arm is combined with the rotating shaft, so that the swing arm pivots with the rotating shaft as the pivot center;

A shearing unit is combined with the swing arm and drives the swing arm to move along an arc-shaped path.

Based on the foregoing, the present invention mainly displaces the shearing unit along the arc-shaped path to achieve the effect of reducing the size of the knitting machine and improving the efficiency of shearing.

The present invention provides a sewing and cutting device for tubular knitted articles for installation on a machine body A. The machine body A has a yarn guide needle B, and the yarn guide needle B is wound with a chain suture. There are also two loopers Q, two loopers Q are pivotally connected to the body A, and the pivotal movement paths of the two loopers Q are orthogonal to each other to form the chain suture J. Further definition, the The chain suture J has a first line segment J1 and a second line segment J2 that are connected. The second line segment J2 is wound around the yarn guide needle B, and the first line segment J1 extends in a direction away from the yarn guide needle B The body A has a first base T1 and a second base T2. One of the loopers is pivoted on the first base T1, and the other looper is pivoted on the second base T2. In an embodiment, please refer to Figures 1 to 10, including:

A driving mechanism 10 for installing on the body A. The driving mechanism 10 has a power source 11, a connecting rod group 12, a rotating shaft 13, and a swing arm 14. The connecting rod group 12 is connected to the power source 11 , And driven by the power source 11, the connecting rod set 12 is fixedly combined with the rotating shaft 13 to drive the rotating shaft 13 to pivot, and the swing arm 14 is fixedly combined with the rotating shaft 13, so that the swing arm 14 uses the rotating shaft 13 as The pivot center pivots.

A shearing unit 20 is coupled to the swing arm 14 and drives the swing arm 14 to move along an arc-shaped path. The shearing unit 20 has a first blade portion K1 and a second blade that can be relatively far away or close to Blade K2.

The driving mechanism 10 has a first state S1 and a second state S2. When the driving mechanism 10 is in the first state S1, the cutting unit 20 is located at the first position P1, and the driving mechanism 10 is in the second state S2. The cutting unit 20 is located at the second position P2. When the cutting unit 20 is located at the second position P2, the first blade K1 and the second blade K2 just touch the chain stitch to cut the Chain suture; further description, the power source 11 has a transmission rod 111, the transmission rod 111 extends along a longitudinal direction Y and can be moved back and forth along the longitudinal direction Y, one end of the transmission rod 111 and the connecting rod group 12 is pivotally connected. When the transmission rod 111 has a stroke starting point and a stroke end along the longitudinal direction Y, when the transmission rod 111 is located at the starting point of the stroke, the driving mechanism 10 is in the first state S1, and when the transmission rod 111 is located at the At the end of the stroke, the driving mechanism 10 is in the second state S2.

In a specific implementation aspect, the body A has a first side A1 and a second side A2 opposite to each other. The extending direction between the first side A1 and the second side A2 is an axial direction X, and the axial direction X It is perpendicular to the longitudinal direction Y, and a height direction Z is defined. The height direction Z is perpendicular to the axial direction X and the longitudinal direction Y. The power source 11 is provided for assembly on a first side A1 of the machine body, and the power source 11 It can be a pneumatic cylinder, but is not limited to this. The connecting rod group 12 has a first connecting rod 121 and a second connecting rod 122. One end of the first connecting rod 121 is connected to the power source 11, and the first connecting rod 121 is connected to the power source 11. The other end of the connecting rod 121 is pivotally connected to the second connecting rod 122, and the other end of the second connecting rod 122 pivotally connected to the first connecting rod 121 has a sleeve portion 122A, and the sleeve portion 122A is sleeved on the rotating shaft 13 so that the rotating shaft 13 can be driven and pivoted by the second link 122, the rotating shaft 13 penetrates the body A along the axial direction X, the swing arm 14 is located on the second side A2, and the swing arm 14 It has a first end 14A and a second end 14B opposite to each other. The first end 14A has a pivot hole 141, and the rotating shaft 13 passes through the pivot hole 141 so that the swing arm 14 and the rotating shaft 13 are fixedly combined.

The cutting unit 20 has a first cutter 21 and a second cutter 22. The first blade K1 is located on the first cutter 21, the second blade K2 is located on the second cutter 22, and the first cutter 21 is combined with At the second end 14B, the second cutter 22 is pivoted to the first cutter 21, so that the second cutter 22 can pivot relative to the first cutter 21, so that the second blade portion K2 can approach or move away from the first cutter 21. A blade portion K1. Preferably, the second cutter 22 further has a convex portion 221, the convex portion 221 is located on one side of the second cutter 22, and the convex portion 221 is provided to abut against a bottom surface A3 of the body A The bottom surface A3 is located on the second base T2, so that the second blade portion K2 can approach the first blade portion K1 to cut the chain stitch.

In a specific embodiment, referring to FIG. 3, the first cutter 21 is roughly L-shaped. The first cutter 21 has a coupling portion 211 and a first cutting portion 212. The coupling portion 211 is connected to the first cutting portion 211. Cut one side of the cutting portion 212 so that the first cutter 21 is almost L-shaped, the coupling portion 211 has at least one coupling hole 211A, the second end 14B of the swing arm 14 has at least one through hole O, and the through hole The number of O is the same as the number of the coupling hole 211A. The through hole O and the coupling hole 211A are penetrated through a first screw V1 to screw the first cutter 21 and the swing arm 14 together. The first shear The portion 212 has a top end 212A and a bottom end 212B opposite to each other. The first shearing portion 212 has a first pivot hole 212C. The first pivot hole 212C is located approximately in the center between the top end 212A and the bottom end 212B. ; The second cutter 22 has a relatively upper end 22A and a lower end 22B, the second cutter portion 22 has a second pivot hole 22C, the second pivot hole 22C is located between the upper end 22A and the lower end 22B is roughly the center Position, the first pivot hole 212C and the second pivot hole 22C are penetrated through a second screw V2, so that the second cutter 22 pivots the first cutter 21, and the second cutter 22 has a first side surface 22D, the convex portion 221 protrudes from the first side surface 22D.

In the preferred embodiment, there is another spring 30. One end of the spring 30 is coupled to the second cutter 22. Preferably, the spring 30 is coupled to the lower end 22B or a portion adjacent to the lower end 22B. The other end is coupled to the body A, and the spring 30 is provided to provide a pre-force of a pivot of the second cutter 22 so that the blade K of the second cutter 22 can be far away from the blade K of the first cutter 21, in practical implementation In the aspect, the spring 30 is coupled to one end of the second cutter 22 and is away from the convex portion 221.

For specific instructions, please refer to FIGS. 3 to 6 together. The extension direction of the swing arm 14 has the components of the longitudinal direction Y and the height direction Z, and the extension direction of the swing arm 14 is perpendicular to the axial direction X. When the swing arm 14 When pivoting with the shaft 13 as the pivot center, the first tool 21 combined with the second end 14B of the swing arm 14 is driven to move along an arc-shaped path. Because the spring 30 provides the second tool 22 with a pre-force The second blade portion K2 is far away from the first blade portion K1, so that the shearing unit 20 is in an unsheared state. As the swing arm 14 pivots to the convex portion 221 against the bottom surface A3, the bottom surface A3 provides a reaction force of the convex portion 221. The direction of the reaction force is opposite to the direction of the pre-force provided by the spring 30, and the reaction force is greater than the pre-force provided by the spring 30, thereby driving the second cutter 22 to the second screw V2 is a pivoting center pivot, so that the second blade portion K2 is close to the first blade portion K1, so that the shearing unit 20 presents a shearing state.

To further define, one of the looper Q is arc-shaped, and the extension direction of the looper Q has the components of the axial direction X and the height direction Z, and the other looper Q is arc-shaped, and the extension direction has For the components of the longitudinal direction Y and the height direction Z, the first connecting rod 121 is arranged along the longitudinal direction Y, and the second connecting rod 122 is arranged along the height direction Z.

To be further defined, the body A has a relatively head end A4 and a tail end A5 along the longitudinal direction Y, the power source 11 is closer to the tail end A5, the second yarn guide needle B is located at the head end A4, and the connecting rod The group 12 and the rotating shaft 13 are located at the relative center between the head end A4 and the tail end A5.

Preferably, referring to FIGS. 4 and 5, the shearing unit 20 is displaced along a pivoting direction W, which is an arc direction, the rotating shaft 13 has a circumferential direction R, and the pivoting direction W It is the same direction as the circumferential direction R.

A: Body A1: First side A2: second side A3: Bottom A4: Head end A5: End B: Yarn guide needle K1: First blade K2: The second blade X: axial Y: vertical Z: height direction 10: Drive mechanism 11: Power source 111: drive rod 12: Connecting rod group 121: first link 122: second link 122A: Socket 13: shaft 14: swing arm 141: Pivot 14A: first end 14B: second end O: Through hole 20: Shearing unit 21: The first tool 211: Joint 211A: Combination hole 212: The first cutting part 212A: Top 212B: bottom end 212C: The first pivot hole 22: The second tool 22A: upper end 22B: bottom 22C: second pivot hole 22D: First side 221: Convex 30: spring V1: The first screw V2: second screw S1: First state S2: second state P1: first position P2: second position W: pivot direction R: Zhou Xiang Q: Curved needle J: Chain stitch J1: the first line segment J2: second line segment T1: First base T2: second base

Fig. 1 is a perspective view of the sewing and cutting device of the tubular knitted article of the present invention. Fig. 2 is a perspective view of the sewing and cutting device for the tubular knitted article of the present invention. Figure 3 is an exploded view of the sewing and shearing device for the tubular knitted article of the present invention. Fig. 4 is a schematic diagram of the operation of the sewing and cutting device of the tubular knitted article of the present invention in the first state. Fig. 5 is a perspective view of the sewing and cutting device of the tubular knitted article of the present invention in the first state. Fig. 6 is a schematic diagram of the operation of the sewing and cutting device of the tubular knitted article of the present invention in the second state. Fig. 7 is a perspective view of the sewing and cutting device of the tubular knitted article of the present invention in the second state. Fig. 8 is a partial enlarged schematic diagram of the stitching and cutting device of the tubular knitted article of the present invention in the first state. Fig. 9 is a partial enlarged schematic diagram of the sewing and cutting device of the tubular knitted article of the present invention in the second state. Fig. 10 is a partial enlarged schematic diagram of the sewing and cutting device of the tubular knitted article of the present invention in the second state

A: Body

A1: First side

A2: second side

A4: Head end

A5: End

B: Yarn guide needle

K1: First blade

K2: The second blade

X: axial

Y: vertical

Z: height direction

10: Drive mechanism

11: Power source

111: drive rod

12: Connecting rod group

121: first link

122: second link

122A: Socket

13: shaft

14: swing arm

141: Pivot

14A: first end

14B: second end

O: Through hole

20: Shearing unit

21: The first tool

211: Joint

211A: Combination hole

212: The first cutting part

212A: Top

212B: bottom end

212C: The first pivot hole

22: The second tool

22A: upper end

22B: bottom

22C: second pivot hole

22D: First side

221: Convex

30: spring

V1: The first screw

V2: second screw

S1: First state

S2: second state

Q: Curved needle

T1: First base

T2: second base

Claims (11)

A sewing and shearing device for tubular knitted articles for installation in a body, comprising: A driving mechanism with a power source, a connecting rod group, a rotating shaft, and a swing arm, the connecting rod group is connected to The power source is driven by the power source, the connecting rod group is fixedly combined with the rotation shaft to drive the rotation shaft to pivot, and the swing arm is combined with the rotation shaft, so that the swing arm pivots with the rotation shaft as the pivot center; as well as A shearing unit is combined with the swing arm and drives the swing arm to move along an arc-shaped path. The sewing and cutting device for tubular knitted articles according to the first item of the scope of patent application, wherein the body has a yarn guide needle, the yarn guide needle is wound with a chain stitch, and the cutting unit has a first The blade portion and a second blade portion, the driving mechanism has a first state and a second state, when the driving mechanism is in the first state, the shearing unit is in the first position, and the driving mechanism is in the second state The cutting unit is located at the second position, and when the cutting unit is located at the second position, the first blade portion and the second blade portion cut the chain suture. As described in the second item of the scope of patent application, the sewing and cutting device for tubular knitted articles, wherein the power source has a transmission rod extending along a longitudinal direction and can be moved back and forth along the longitudinal direction. One end is pivotally connected to the linkage group. When the transmission rod has a starting point and an ending point along the longitudinal direction, and the transmission rod is located at the starting point of the stroke, the drive mechanism is in the first state, and when the transmission rod is located at the At the end of the stroke, the driving mechanism is in the second state; The body is further provided with two loopers, two loopers are pivotally connected to the body, and two loopers are pivoted The moving paths are orthogonal to each other to form the chain suture. The chain suture has a first line segment and a second line segment that connect, the second line segment is wound around the yarn guide needle, and the first line segment is Extending in a direction away from the yarn guide needle, the first blade portion and the second blade portion cut the first line segment, the body has a first base and a second base, and one of the loopers is pivoted on The first base and the other looper are pivoted on the second base. The sewing and cutting device for tubular knitted articles as described in item 3 of the scope of patent application, wherein the body has a first side and a second side opposite to each other, and the extending direction between the first side and the second side Is an axial direction, the power source is provided for assembly on the first side of the body, the connecting rod set has a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the power source Connected, the other end of the first link is pivotally connected to the second link, the other end of the second link and the first link pivotally has a socket part, and the socket part is sleeved on the rotating shaft so that The rotating shaft is driven to pivot by the second link, the rotating shaft penetrates the body along the axial direction, the swing arm is located on the second side, and the swing arm has a first end and a second end opposite to each other , The first end has a pivot hole, the rotating shaft passes through the pivot hole, and the shearing unit is coupled to the second end. The sewing and cutting device for tubular knitted articles as described in item 4 of the scope of patent application, wherein another height direction is defined, the height direction is perpendicular to the axial direction and the longitudinal direction, and the first connecting rod is arranged along the longitudinal direction, The second connecting rod is arranged along the height direction, the extension direction of the swing arm has components of the longitudinal direction and the height direction, and the extension direction of the swing arm is perpendicular to the axial direction; The body has a relatively head end and a tail end along the longitudinal direction, and the power source is closer to the tail end, Second, the yarn guide needle is located at the head end, and the connecting rod group and the rotating shaft are located between the head end and the tail end. The sewing and cutting device for tubular knitted articles according to the first item of the scope of patent application, wherein the cutting unit has a first cutter and a second cutter, the first blade is located on the first cutter, and the second cutter The blade is located on the second tool, the first tool is coupled to the swing arm, the second tool is pivoted to the first tool, so that the second tool can pivot relative to the first tool, and the second blade can Close to or away from the first blade. According to the sewing and cutting device for tubular knitted articles described in the scope of the patent application, wherein the second cutter further has a convex portion, the convex portion is located on one side of the second cutter, and the convex portion is provided to abut against One of the undersides of the body; Thereby, when the shearing unit pivots with the swing arm until the convex portion abuts against the bottom surface, the bottom surface provides the A reaction force of the convex portion drives the second cutter to pivot so that the second blade portion approaches the first blade portion. The sewing and cutting device for tubular knitted articles according to the seventh item of the scope of patent application, wherein the first cutter is generally L-shaped, and the first cutter has a joint part and a first cutting part, and the joint part is connected On one side of the first shearing portion, the coupling portion has at least one coupling hole, the second end of the swing arm has at least one through hole, the number of the through hole is the same as the number of the coupling hole, and the through hole is The coupling hole is drilled through a first screw to connect the first cutter and the swing arm by screwing. The first shearing portion has a top end and a bottom end opposite to each other. The first shearing portion has a first pivot The first pivot hole is located at a roughly central position between the top end and the bottom end; the second cutter has an upper end and a lower end opposite to each other, the second cutter portion has a second pivot hole, and the second The pivot hole is located between the upper end and the lower end. The first pivot hole and the second pivot hole are penetrated by a second screw, so that the second tool pivots the first tool, and the second tool has a first tool. On a side surface, the convex portion protrudes from the first side surface. The sewing and cutting device for tubular knitted articles as described in the first item of the scope of patent application, wherein the power source is a pneumatic cylinder. The sewing and cutting device for tubular knitted articles according to the scope of patent application, wherein there is another spring, one end of the spring is connected to the lower end of the second cutter, and the other end of the spring is connected to the body , The spring is provided to provide a pre-force for the pivotal swing of the second cutter to make the second blade part away from the first blade part. A sewing and shearing device for tubular knitted articles for installation in a body, comprising: A drive mechanism for installation in the body, the drive mechanism has a power source, a linkage group, a A rotating shaft and a swing arm. The connecting rod group is connected to the power source and driven by the power source. The connecting rod group is fixedly combined with the rotating shaft to drive the rotating shaft to pivot. The swing arm is combined with the rotating shaft to make the The swing arm pivots with the rotating shaft as the pivot center; A shearing unit, combined with the swing arm, the shearing unit is displaced along a pivoting direction, the pivoting direction It is an arc-shaped direction, the rotating shaft has a circumferential direction, and the pivoting direction is the same direction as the circumferential direction.

Images