Disclosure of Invention
The object of the present invention is to provide a thread changing device for knitting which overcomes the above-mentioned drawbacks of the prior art.
The thread changing device for knitting comprises a main body, wherein a through cavity is arranged in the main body, sliding grooves are formed in the front side and the rear side of the through cavity, a pressing plate is arranged in the sliding groove in the front side in a sliding mode, a sliding block is arranged in the sliding groove in the rear side in a sliding mode, a pressure spring is fixedly arranged between the sliding block and the lower end of the pressing plate and the sliding groove respectively, a rotating shaft is arranged on the sliding block in a rotating mode, a fixed block is fixedly arranged at the front end of the rotating shaft, a pressing device is arranged in the fixed block and is connected with the fixed block in a sliding mode, a fixed shaft abutted against the pressing plate is fixedly arranged at the front end of the fixed block, a glue groove is arranged in the lower end wall of the through cavity in a communicating mode, grooves are formed in the front side and the rear side of the glue groove in a communicating mode, a sliding plate is arranged in the groove in a sliding mode, a, the upper end of the push block is fixedly provided with a first fixing rod, the front side of the rubber groove is provided with a linkage device, the linkage device is rotatably connected with the first fixing rod, the push block is internally provided with a through groove, a sealing plate is slidably arranged in the through groove, a front-back symmetrical expansion spring is fixedly arranged between the lower end of the sealing plate and the through groove, the rear side of the push cavity is communicated with a rubber storage cavity through a connecting groove, a ball valve for controlling liquid to flow in a single direction is slidably arranged in the connecting groove, a connecting spring is fixedly arranged between the left end of the ball valve and the connecting groove, the outer side of the rubber groove is provided with a transmission device, the transmission device is abutted against the pressing device, the right end wall of the main body is internally provided with a slot, a knitting wire groove is communicated with the through cavity, the lower end wall of the slot is fixedly provided with a second fixing rod, the second fixing rod is sleeved with a knitting wire, and the left end of the knitting wire, a shearing device is arranged on the outer side of the knitting line groove and used for shearing off the knitting line, and a replacing groove communicated with the through cavity is arranged on the rear side of the knitting line groove; the knitting threads are connected with the knitting threads to be replaced through glue.
According to a further technical scheme, the pressing device comprises a pressing groove arranged in the fixed block, a pressing block is arranged in the pressing groove in a sliding mode, a fixed plate is fixedly arranged at the front end of the pressing block, the pressing block is provided with reset components used for resetting the pressing block in a bilaterally symmetrical mode, symmetrical T-shaped grooves are formed in the left side and the right side of the pressing groove, clamping blocks are arranged in the T-shaped grooves in a sliding mode, and a rotating spring is fixedly arranged between one end, close to each other, of each clamping block and the T-shaped groove; the pressing block is pressed downwards, and then the knitting thread can be clamped through the clamping block.
According to a further technical scheme, the linkage device comprises a hollow groove communicated with the through cavity, a pressure rod is arranged in the hollow groove in a sliding mode, a pressure spring is fixedly arranged between the lower end of the pressure rod and the hollow groove, a rotating cavity is communicated between the hollow groove and the pushing cavity, a rotating rod with the front end rotatably connected with the lower end of the pressure rod is rotatably arranged in the rotating cavity, and the rear end of the rotating rod is rotatably connected with the upper end of the first fixing rod; the pressing rod descends to enable the pushing block to ascend and push the glue into the glue groove so as to connect knitting threads.
According to the further technical scheme, the transmission device comprises sliding grooves symmetrically arranged on the left side and the right side of the glue groove, a clamping slide block is arranged in the sliding grooves in a sliding mode, a clamping groove is formed in the clamping slide block, an extrusion spring is fixedly arranged between the clamping slide block and the sliding grooves, a pushing groove is formed in the lower end wall of the sliding groove on the right side in a communicating mode, a connecting block which is used for abutting connection of the upper end of the clamping slide block in the sliding groove on the right side and the sliding groove is arranged in the pushing groove in a sliding mode, a jacking spring is fixedly arranged between the lower end of the connecting block and the pushing groove, a rotating gear meshed with the connecting block is arranged in the left end wall of the pushing groove in a; and the clamping sliders move towards each other to enable the shearing device to work.
According to a further technical scheme, the shearing device comprises a shearing groove communicated with the knitting line groove, a lifting plate is arranged in the shearing groove in a sliding mode, a straight gear meshed with the lifting plate is arranged in the rear end wall of the shearing groove in a rotating mode, the straight gear is in power connection with the rotating gear through a belt, a shifting groove is formed in the upper end of the lifting plate, shifting blocks which are symmetrical in the front and back are arranged in the shifting groove in a sliding mode, a torsion spring is fixedly arranged between the shifting blocks, scissors are rotatably arranged on the shifting blocks, and the scissors are in cross rotating connection; the lifting plate descends to enable the scissors to rotate oppositely to cut off the knitting yarns.
The invention has the beneficial effects that: the invention has simple structure, convenient operation, single-hand operation, no influence on taking the fabric by the left hand, convenient operation and time saving, and secondly, the replaced knitting thread is automatically cut off after being connected with the knitting thread of the knitting needle, thereby reducing the manual operation and being convenient to carry.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, for convenience of description, the following orientations will now be defined: the up-down, front-back, left-right directions described below correspond to the up-down, front-back, left-right directions in the projection relation of fig. 1 itself.
Referring to fig. 1-4, a thread changing device for knitting according to an embodiment of the present invention includes a main body 10, a through cavity 11 is provided in the main body 10, sliding grooves 12 are provided in front and rear sides of the through cavity 11, a pressing plate 18 is slidably provided in the sliding groove 12 on the front side, a sliding block 13 is slidably provided in the sliding groove 12 on the rear side, a pressing spring 14 is fixedly provided between the sliding block 13 and the lower end of the pressing plate 18 and the sliding groove 12, respectively, a rotating shaft 15 is rotatably provided on the sliding block 13, a fixing block 16 is fixedly provided at the front end of the rotating shaft 15, a pressing device 100 is provided in the fixing block 16, the pressing device 100 is slidably connected to the fixing block 16, a fixing shaft 17 abutting against the pressing plate 18 is fixedly provided at the front end of the fixing block 16, a glue groove 26 is provided in a lower end wall of the through cavity 11, a groove 27 is provided in communication with the front and rear sides of the, a return spring 29 is fixedly arranged between one end of the sliding plate 28, which is far away from the groove 27, and the groove 27, a push cavity 31 is arranged at the lower side of the glue groove 26 in a communicating manner, a push block 32 is arranged in the push cavity 31 in a sliding manner, a first fixing rod 40 is fixedly arranged at the upper end of the push block 32, a linkage device 200 is arranged at the front side of the glue groove 26, the linkage device 200 is rotatably connected with the first fixing rod 40, a through groove 33 is arranged in the push block 32, a sealing plate 34 is arranged in the through groove 33 in a sliding manner, front and back symmetrical expansion springs 35 are fixedly arranged between the lower end of the sealing plate 34 and the through groove 33, a glue storage cavity 37 is arranged at the rear side of the push cavity 31 in a communicating manner through a connecting groove 36, a ball valve 38 for controlling the unidirectional flow of liquid is arranged in the connecting groove 36 in a sliding manner, a connecting spring 39 is fixedly arranged between the left end of the ball valve 38, a groove 43 is formed in the right end wall of the main body 10, a knitting line groove 50 is arranged between the groove 43 and the through cavity 11 in a communicating manner, a second fixing rod 47 is fixedly arranged on the lower end wall of the groove 43, a knitting line 48 is sleeved on the second fixing rod 47, the left end of the knitting line 48 penetrates through the knitting line groove 50 and the through cavity 11 and extends to the outside for knitting, a shearing device 400 is arranged outside the knitting line groove 50, the shearing device 400 is used for shearing the knitting line 48, and a replacing groove 49 communicated with the through cavity 11 is arranged on the rear side of the knitting line groove 50; the knitting threads 48 are connected to the knitting threads to be replaced by glue.
Beneficially, the pressing device 100 includes a pressing groove 20 arranged in the fixed block 16, a pressing block 21 is slidably arranged in the pressing groove 20, a fixed plate 30 is fixedly arranged at the front end of the pressing block 21, the pressing block 21 is bilaterally symmetrically and fixedly provided with a resetting component 22 for resetting the pressing block 21, symmetrical T-shaped grooves 23 are arranged on the left and right sides of the pressing groove 20, clamping blocks 24 are slidably arranged in the T-shaped grooves 23, and a rotating spring 25 is fixedly arranged between one end, close to each other, of each clamping block 24 and the T-shaped groove 23; the presser piece 21 is pressed down and the knitting thread can be clamped by the clamping piece 24.
Beneficially, the linkage device 200 includes an empty groove 44 communicated with the through cavity 11, a pressure rod 45 is slidably disposed in the empty groove 44, a pressure spring 46 is fixedly disposed between the lower end of the pressure rod 45 and the empty groove 44, a rotating cavity 41 is disposed between the empty groove 44 and the pushing cavity 31 in a communicating manner, a rotating rod 42 with a front end rotatably connected with the lower end of the pressure rod 45 is rotatably disposed in the rotating cavity 41, and a rear end of the rotating rod 42 is rotatably connected with the upper end of the first fixing rod 40; the depression of the presser bar 45 causes the push block 32 to rise pushing the glue into the glue groove 26 for joining the knitting threads.
Beneficially, the transmission device 300 includes sliding grooves 63 symmetrically arranged on the left and right sides of the glue groove 26, a clamping slider 64 is slidably arranged in the sliding groove 63, a clamping groove 65 is arranged in the clamping slider 64, an extruding spring 66 is fixedly arranged between the clamping slider 64 and the sliding groove 63, a pushing groove 60 is arranged on the lower end wall of the right sliding groove 63 in a communicating manner, a connecting block 59 with the upper end thereof abutting against the clamping slider 64 in the right sliding groove 63 is slidably arranged in the pushing groove 60, a jacking spring 61 is fixedly arranged between the lower end of the connecting block 59 and the pushing groove 60, a rotating gear 62 engaged with the connecting block 59 is rotatably arranged on the left end wall of the pushing groove 60, and the rotating gear 62 is in power connection with the shearing device 400; the clamping slides 64 are moved towards each other so that the cutting device 400 is activated.
Beneficially, the cutting device 400 includes a cutting groove 51 communicated with the knitting thread groove 50, a lifting plate 53 is slidably disposed in the cutting groove 51, a spur gear 57 engaged with the lifting plate 53 is rotatably disposed in a rear end wall of the cutting groove 51, the spur gear 57 is in power connection with the rotating gear 62 through a belt 58, a shifting groove 54 is disposed at an upper end of the lifting plate 53, shifting blocks 55 which are symmetrical front and back are slidably disposed in the shifting groove 54, a torsion spring 56 is fixedly disposed between the shifting blocks 55, scissors 52 are rotatably disposed on the shifting blocks 55, and the scissors 52 are in cross rotation connection; the lifting plate 53 is lowered so that the scissors 52 are rotated in the opposite direction to cut the knitting yarn 48.
In the initial state, the left end of the knitting thread 48 is connected with the fabric, and glue is arranged between the upper end of the through groove 33 and the push cavity 31.
When the thread needs to be changed, the rotating shaft 15 is rotated clockwise in a right view, so that the through cavity 11 is opened by the fixed shaft 17, the fixed block 16 and the rotating shaft 15, the knitting thread to be changed is placed in the through cavity 11 through the replacing groove 49, the left end of the replaced knitting thread is positioned at the left end of the clamping block 24 on the left side, the rotating shaft 15 is rotated reversely, so that the fixed block 16 is restored to the original state, then the press block 21 is pressed downwards, the fixed block 16 is driven to descend along with the press block 21 through the reset component 22, the lower end of the clamping block 24 is inserted into the clamping groove 65, the knitting thread 48 and the replaced knitting thread are clamped together, the press block 21 continuously descends, the reset component 22 is compressed, the lower end of the press block 21 pushes the sliding plate 28 to move backwards to clamp the glue groove 26, the lower end of the press block 21 presses the two knitting threads together into the glue groove 26, at the moment, the press rod 45 descends by the fixed plate 30, the press the push block 32 through the rotating rod 42, the glue in the, at this time, the ball valve 38 moves forward, the glue in the glue storage cavity 37 enters the push cavity 31 through the connecting groove 36, when the pressing block 21 presses two knitting threads down to the glue groove 26, the knitting threads drive the clamping slide blocks 64 to move oppositely, the extrusion connecting block 59 descends, the rotating gear 62 rotates clockwise, the straight gear 57 rotates through the belt 58, the lifting plate 53 descends, the scissors 52 rotate oppositely to cut the knitting threads 48, then the pressing block 21 is released, the fixed block 16 ascends along with the pressing block, the pressing rod 45 ascends under the action of the pressure spring 46, the pushing block 32 descends to extrude the glue on the lower side of the push cavity 31 to the upper side of the push cavity 31, the clamping slide blocks 64 move backwards under the action of the extrusion spring 66 to straighten the knitting threads, the knitting threads are positioned on the upper side of the sliding plate 28, and the device returns to the original position.
The invention has the beneficial effects that: the invention has simple structure, convenient operation, single-hand operation, no influence on taking the fabric by the left hand, convenient operation and time saving, and secondly, the replaced knitting thread is automatically cut off after being connected with the knitting thread of the knitting needle, thereby reducing the manual operation and being convenient to carry.
It will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the general spirit and concept of the invention. All falling within the scope of protection of the present invention. The protection scheme of the invention is subject to the appended claims.