CN212865168U - Flat knitting machine and needle rake pushing device thereof - Google Patents

Abstract

The utility model discloses a flat knitting machine and a needle harrow pushing device thereof, wherein the needle harrow pushing device comprises a needle harrow component provided with needles; the needle rake is characterized by also comprising a slide rail, a fixed seat, a needle rake seat and a needle rake reset guide sheet; the sliding rail of the sliding rail can be matched with the fixed rail in a sliding mode; the fixed seat is fixedly arranged on the sliding rail so as to be displaced relative to the fixed rail under the action of a force application part for providing upward acting force; the lower end of the needle and rake seat is hinged with the fixed seat, and the needle and rake assembly is arranged at the upper end of the outer side of the needle and rake seat so as to synchronously swing around a hinge center with the needle and rake seat relative to the fixed seat; the middle part of the needle harrow resetting guide piece is hinged with the fixed seat, the upper end of the needle harrow resetting guide piece is in transmission connection with the needle harrow seat, and the lower end of the needle harrow resetting guide piece is matched with a force application part for providing withdrawing acting force of the needle harrow. But this scheme passes through structural optimization accurate control to the pulling force of fabric, realizes providing technical guarantee for improving tensile control precision simultaneously to the duty cycle process of pulling the fabric.

Description

Flat knitting machine and needle rake pushing device thereof

Technical Field

The utility model relates to a computer flat knitting machine technical field especially relates to a flat knitting machine and needle harrow pusher thereof.

Background

The computerized flat knitting machine has the advantages of high weaving efficiency, low operator demand, simple programming and the like, and plays a role in lifting in the textile industry. The roller for pulling and sending the cloth is a necessary device of the computerized flat knitting machine, and the formed fabric is clamped and pulled so as to realize the functions of knitting, needle turning and the like of the latch needle. Obviously, the function requires that the roller on the computerized flat knitting machine has good material grabbing capacity.

At present, a roller of a computerized flat knitting machine adopts a needle rake pushing component to drive a fabric to do a pull-down action, but the pulling force formed by the needle rake is uncontrollable due to the limitation of the structure of the roller. Meanwhile, the cloth clamp is arranged between the two groups of rollers, so that the tension in the middle of the rollers is influenced, the two sides of the rollers are not uniformly contacted with the fabric, the tension on the fabric is not uniform, and the processing effect of the fabric is finally influenced.

In view of this, it is desirable to optimally design a needle rake pushing device of an existing flat knitting machine so as to effectively improve the control accuracy of the fabric traction tension.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a flat knitting machine and needle harrow pusher thereof can accurate control through configuration optimization to the pulling force of fabric, provides good technical guarantee for improving fabric processing effect.

The utility model provides a needle rake pushing device, which comprises a needle rake component provided with acupuncture; the needle rake is characterized by also comprising a slide rail, a fixed seat, a needle rake seat and a needle rake reset guide sheet; the sliding rail of the sliding rail can be matched with the fixed rail in a sliding mode; the fixed seat is fixedly arranged on the sliding rail so as to be displaced relative to the fixed rail under the action of a force application part for providing upward acting force; the lower end of the needle and rake seat is hinged with the fixed seat, and the needle and rake assembly is arranged at the upper end of the outer side of the needle and rake seat so as to synchronously swing around a hinge center with the needle and rake seat relative to the fixed seat; the middle part of the needle harrow resetting guide piece is hinged with the fixed seat, the upper end of the needle harrow resetting guide piece is in transmission connection with the needle harrow seat, and the lower end of the needle harrow resetting guide piece is matched with a force application part for providing withdrawing acting force of the needle harrow.

Preferably, the device further comprises a balancing weight and an elastic piece; the counterweight block is fixedly arranged at the lower part of the fixed seat, and the lower end of the counterweight block is matched with a force application part for providing the upward moving acting force; the elastic piece is pre-deformed and arranged between the needle harrow seat and the fixed seat.

Preferably, the elastic member is a compression spring, and the pressing surfaces of the needle rake seat and the fixed seat and the compression spring are respectively provided with an inward concave blind hole to limit two end parts of the compression spring.

Preferably, the lower end of the needle and harrow seat is hinged to the middle of the fixing seat, and the middle of the needle and harrow reset guide piece is hinged to the fixing seat and the lower end of the needle and harrow seat at the same hinge point.

Preferably, the needle harrow reset guide piece is in transmission connection with the needle harrow seat through a guide shaft, the shaft end of the guide shaft is inserted into a long hole formed in the fixed seat, and can be switched between an extending working position and a retracting working position in the long hole, and the guide shaft is configured as follows: under the pressing action of the force application part, the needle rake reset guide piece rotates around a hinge point between the needle rake reset guide piece and the fixed seat and drives the needle rake seat to retract, the guide shaft is switched to a retraction working position, and the elastic piece further deforms; the elastic piece releases deformation and can act on the needle and harrow seat, and when the needle and harrow seat is pushed to extend, the guide shaft is switched to an extending working position.

Preferably, the fixing seat is provided with two side wall plates formed by extending from two sides of the bottom plate, the long holes are formed in the two side wall plates, hinge holes are further formed in the two side wall plates, a hinge core shaft is arranged in a pivot connection mode of the hinge holes, the lower end of the needle rake seat is pivoted on the hinge core shaft between the two side wall plates, and the middle of the needle rake reset guide piece is pivoted on the hinge core shaft extending out of the wall plate on one side.

Preferably, the device also comprises a guide sleeve and a guide seat which are matched; the guide sleeve is sleeved on the guide shaft between the wall plates on two sides; the guide seat is fixedly arranged at the upper end of the fixed rail and provided with an inner concave part with a downward opening, and the inner concave part is matched with the top end of the fixed seat to limit the upward movement of the fixed seat; and the inner wall of the inner concave part close to the outer side is a guide wall surface adapted to the guide sleeve and is configured as follows: the guide wall surface changes from top to top in a gradually inward-contracting trend.

Preferably, the bottom of the fixed seat or the counterweight block is provided with a plurality of limiting grooves which are used for being matched with the clamping part in a clamping manner, and the limiting grooves are vertically arranged at intervals; the guide seat is provided with a guide inclined block which extends downwards, the guide inclined block surrounds to form the concave part, and the inner side surface of the guide inclined block forms the guide wall surface; correspondingly, the inner side surface of the needle and harrow seat is provided with a sliding chute matched with the guide inclined block, the sliding chute is vertically arranged, and the cross section area of the sliding chute is gradually increased from top to bottom; the acupuncture of needle harrow subassembly and the integrative injection moulding of needle harrow main part, needle harrow subassembly passes through the horizontal cartridge of needle harrow main part sets up the upper end slot in the needle harrow seat outside.

The utility model discloses still include a flat knitting machine, including the roller, still include the needle harrow unit assembly that the multiunit set gradually along roller length direction, every needle harrow unit assembly includes: a driving component and a plurality of needle rake pushing devices as described above; the two side shaft ends of the transmission shaft are respectively pivoted with the supporting plate bodies of the roller side plate and the middle supporting plate, and the driving part provides a rotating driving force; the driving sleeves are respectively arranged corresponding to the needle rake pushing devices, are sequentially sleeved on the transmission shaft along the axial direction, and can rotate coaxially with the transmission shaft; two side shaft ends of a push rod optical axis are respectively pivoted to the roller side plate and the supporting plate body; the plurality of reset push rods are respectively arranged corresponding to the plurality of needle rake pushing devices, are sequentially sleeved on the push rod optical axis along the axial direction, and can rotate relative to the push rod optical axis; the reset push rod is provided with a first matching part and a second matching part matched with the corresponding needle rake pushing device; the periphery of each driving sleeve is provided with an ejecting part and is configured as follows: in the process that the driving sleeve rotates along with the transmission shaft along a first rotating direction, the pushing part can drive the needle rake component of the needle rake pushing device to retract, and the pushing part can push the reset push rod through the first matching part and drive the needle rake pushing device to move upwards through the second matching part; in the axial projection plane, the pushing parts on the driving sleeves are arranged at intervals along the circumferential direction, so that at least one needle rake pushing device pulls the fabric in the working period of the needle rake unit assembly.

Preferably, each of the rake unit assemblies further comprises: the bearing block is sleeved on the transmission shaft, is in one-way transmission connection with the transmission shaft through a one-way rotating clutch piece, and is configured as follows: when the transmission shaft rotates along the second rotation direction, the bearing seats synchronously rotate; the second rotational direction is opposite to the first rotational direction; the reset matching part is arranged at the side of the bearing seat; the pendulum rod, one end with the coaxial rotation of push rod optical axis, the other end is pressed and is supported the cooperation portion that resets to the configuration: when the reset matching part rotates along with the bearing seat, the swing rod can be pushed to drive the push rod optical axis to rotate; at least two push rod reset connecting seats, wherein one ends of the reset connecting seats are fixedly arranged on the push rod optical axes; the reset optical axis is inserted at the other end of the at least two push rod reset connecting seats and is arranged in parallel relative to the push rod optical axis; wherein, reset groove has been seted up on the push rod that resets, the axis body of the optical axis that resets is arranged in every reset groove of push rod that resets to can switch between the primary importance and the second place in reset groove, specifically configure to: under a normal state, the reset optical axis is located at a first position in the reset groove; when the reset push rod drives the needle rake pushing device to move upwards under the pushing of the corresponding pushing part of the driving sleeve, the reset optical axis is located at the second position in the reset groove.

To the flat knitting machine roller of computer, the utility model discloses a develop in another way and proposed to improve the optimization to the pulling force processing scheme of fabric between the roller, specifically obtain good pulling force control through optimizing needle harrow pusher. Compared with the prior art, the utility model discloses following beneficial technological effect has:

firstly, the scheme takes the fixed seat as a basic component of vertical displacement, and vertical displacement relative to the fixed rail can be realized by applying upward displacement acting force through the transmission mechanism; meanwhile, the needle and rake seat and the needle and rake reset guide piece are hinged to the fixed seat, the lower end of the needle and rake reset guide piece is pressed against through the transmission mechanism, and based on the hinged relation, the needle and rake assembly can be retracted and swung relative to the fabric. Therefore, in the linkage process, the needle rake pushing device forms a cycle working period of ascending, separating from the fabric, resetting, descending and hooking the fabric again, so that a good technical guarantee is provided for improving the control precision of the fabric tension. Has the characteristics of reasonable structural design, convenient use, safety and reliability.

Second, the utility model discloses an among the preferred scheme, add the balancing weight and set up the elastic component between needle harrow seat and fixing base, configuration through the balancing weight makes descending stroke can rationally be controlled among the cycle duty cycle, and simultaneously, the setting of elastic component can keep needle harrow seat to be in overhanging trend all the time, and like this, after the needle harrow guide piece that resets breaks away from the effort that drive mechanism applyed, the elastic component can promote needle harrow seat and stretch out fast, catch on the fabric once more in the cycle duty cycle and can realize fast, reliably, can further improve needle harrow pusher's performance of moving.

Thirdly, in another preferred embodiment of the present invention, a long hole adapted to the guiding shaft is formed on the fixing base, specifically, under the pressing action of the force application portion, the needle harrow reset guiding piece rotates around the hinge point between the needle harrow reset guiding piece and the fixing base, and when the needle harrow seat is driven to withdraw, the guiding shaft is switched to the withdrawing working position; the elastic piece releases deformation to act on the needle and harrow seat and pushes the needle and harrow seat to extend out, and the guide shaft is switched to the extending working position. Thereby ensuring the motion trail of the extending or retracting action and forming the precise control of the extending and retracting working position of the needle harrow seat.

Fourthly, in another preferable aspect of the present invention, a guide function is further added to the guide sleeve and the guide holder which are adapted to each other. The guide sleeve is sleeved on the guide shaft between the two side wall plates and can synchronously move upwards along with the fixed seat, correspondingly, the guide seat is fixedly arranged in the concave part in the upper end of the fixed rail to form upwards movement limit on the fixed seat, and the inner wall of the concave part, which is close to the outer side, is adapted to the guide wall surface of the guide sleeve and gradually shrinks from top to top; with the arrangement, in the process that the needle and rake seat moves upwards along with the fixed seat, the guide sleeve enters the concave part of the guide seat, is abutted against the guide wall surface and continues to move upwards and inwards until the needle and rake assembly is separated from the fabric and then is completely reset; similarly, in the process of displacement downwards under the action of self weight of the balancing weight, based on the action of the elastic part, the guide sleeve is abutted along the guide wall surface and is displaced outwards downwards, and the fabric is hooked again after the guide sleeve is separated from the inner concave part, so that the stability of the structure operation of the needle rake pushing device can be improved.

Drawings

FIG. 1 is a schematic structural view of a rake pushing device according to an embodiment;

FIG. 2 is a schematic exploded view of the needle rake pushing device shown in FIG. 1;

FIG. 3 is a schematic view of another exploded perspective view of the needle and rake pushing device shown in FIG. 1;

FIG. 4 is a schematic structural view of the fixing base shown in FIG. 1;

FIG. 5 is an exploded view of the rake unit assembly according to one embodiment.

FIGS. 6a, 6b and 6c show the component position relationships of three action nodes in the working cycle of the rake cycle, respectively;

fig. 7a and 7b show the position relationship of the components of the needle rake limit swing block which is matched with two different limit grooves.

In the figure:

a balancing weight 1, a fixed seat 2, a separation cavity plate 3, a unidirectional rotation clutch member 4, a needle rake reset guide sheet 5, a reset optical axis 6, a reset connecting seat 7, an abutting inclined block 10, a limited abutting block 11, a sliding rail 20, a fixed rail 21, a guide seat 22, a guide inclined block 23, a guide rail holder 24, a positioning hole 25, a guide rail steel ball 26, a positioning plate 27, a mounting hole 28, a sliding plate 29, a groove 30, an upper connecting cavity 31, a lower connecting cavity 32, a long hole 33, a hinge core shaft 34, a concave blind hole 35, an elastic member 36, a guide shaft 37, a guide sleeve 38, a needle rake assembly 39, a needle rake seat 390, a needle rake main body 391, a needle prick 392, a chute 393, a concave blind hole 394, a roller side plate 40, an optical axis 41, a driving part 42, a transmission shaft 43, a driving sleeve 44, a support plate 45, a swing rod 410, a mounting seat 411, a reset push rod 412, a push rod, The pushing portion 442, the first engaging portion 4121, the second engaging portion 4122, the reset groove 4123, the wall plate 51, the hinge hole 52, the inner recess 61, the guide wall 62, the limiting groove 71, the engaging portion 72, the first position a, and the second position B.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Without loss of generality, the needle rake unit assembly shown in the drawing is taken as a description basis in the embodiment, and the scheme of the needle rake pushing device is explained in detail. It should be understood that the specific driving linkage implementation of the rake unit assembly shown in the drawings is not the core invention of the present application, and does not constitute a substantial limitation to the rake pushing device claimed in the present application.

Referring to fig. 1, a schematic structural diagram of a rake pushing device according to an embodiment of the invention is shown.

The rake pusher includes a rake assembly 39 configured with needling to catch and pull the fabric. The needle pricks 392 and the needle rake main body 391 of the needle rake component 39 are integrally formed by injection molding, and the processing manufacturability is better. The needle rake assembly 39 is transversely inserted into the upper end slot on the outer side of the needle rake seat 390 through the needle rake main body 391, and has simple structure and better assembly manufacturability.

As shown in the drawings, the sliding rail 20 of the sliding rail can be slidably fitted with respect to the fixed rail 21, and the fixing seat 2 is fixedly disposed on the sliding rail 20 to be displaced with respect to the fixed rail 21 under the action of the force application portion of the transmission mechanism providing the upward moving force.

The middle part of the needle harrow resetting guide piece 5 is hinged with the fixed seat 2, the upper end of the needle harrow resetting guide piece is in transmission connection with the needle harrow seat 390, and the lower end of the needle harrow resetting guide piece is matched with a force application part for providing withdrawal acting force of the needle harrow. Thus, when the rake reset guide piece 5 is pressed by the force application part, it swings around the hinge center relative to the fixed seat 2, and further drives the rake seat 390 to swing. Wherein, the lower end of the rake seat 390 is hinged with the fixed seat 2, and the rake assembly 39 is disposed at the upper end of the outer side of the rake seat 390 to synchronously swing with the rake seat 390 around the hinge center relative to the fixed seat 2. The "outer side" here means the side facing the fabric. When the needle harrow plate 390 rotates around the hinge center with the fixed seat 2, the upper end thereof is extended outwards (hooking the fabric) or retracted inwards (disengaging the fabric) relative to the fabric.

That is, the basic trajectory of the rake assembly 39 is a combination of vertical displacement and rotation about the hinge center. In the working linkage process, the needle rake pushing device can form a cycle working period of ascending, separating from the fabric, resetting, descending and hooking the fabric again, and provides a good technical guarantee for improving the control precision of the fabric tension.

Please refer to fig. 2 and fig. 3 together, wherein fig. 2 and fig. 3 are schematic diagrams of different angle exploded structures of the rake pushing device shown in fig. 1, respectively. In order to improve the actuating performance, the lower part of the fixed seat 2 is fixedly provided with a balancing weight 1, and the descending stroke in the cycle working period can be reasonably controlled by the configuration of the balancing weight 1; as shown, an elastic member 36 can be disposed between the rake seat 390 and the fixed seat 2, and the elastic member 36 is pre-deformed and then assembled, so that the rake seat 390 always keeps the outward extending trend.

Particularly, this balancing weight 1's front side fixedly connected with conflict sloping block 10, and the front side still is connected with the limited piece 11 that leans on of being connected with the cooperation of fixing base 2, and the transmission of contradicting through this conflict sloping block 10 is convenient to be connected with drive mechanism's application of force portion conflict transmission, can effectively increase application of force portion and balancing weight 1's conflict area, improves the rationality of needle harrow operation.

The elastic member 36 may be implemented in various configurations, such as, but not limited to, a compression spring as shown in the preferred embodiment. The needle harrow seat 390 and the pressing surface of the pressure spring are provided with an inward concave blind hole 394, correspondingly, the fixing seat 2 and the pressing surface of the pressure spring are provided with an inward concave blind hole 35 to limit two end parts of the pressure spring, so that when the needle harrow seat 390 resets and then hooks yarns, the restoring force of the pressure spring is utilized to push the needle harrow seat 390 forward, and then the fabric is hooked again. The structure is simple and reliable.

In this embodiment, the lower end of the needle and rake seat 390 is hinged to the middle of the fixed seat 2, and the middle of the needle and rake reset guide piece 5 is hinged to the fixed seat 2 and the lower end of the needle and rake seat 390 at the same hinge point. By the arrangement, the related action of the related components can be realized by adopting the hinge mandrel. Compared with the scheme of respectively hinging different hinging positions, the structural design of the scheme is more reasonable and compact.

In order to precisely control the motion trace of the extending or retracting motion of the needle rake, it is preferable that a long hole 33 is formed in the fixed seat 2, and a guide shaft 37 disposed between the needle rake return guide 5 and the needle rake seat 390 in a transmission connection is inserted into the long hole 33. Please refer to fig. 4, which is a schematic structural diagram of the fixing base shown in fig. 1.

The guide shaft 37 is switchable in the long hole 33 between an extended operating position and a retracted operating position, and is configured to: under the pressing action of the force application part, the needle rake reset guide piece 5 rotates around the hinged point of the needle rake reset guide piece and the fixed seat 2, and drives the needle rake seat 390 to retract, the guide shaft 37 is switched to the retraction working position, and at the moment, the elastic piece 36 is further deformed; when the elastic member 36 is released and deformed to act on the rake seat 390 and push the rake seat 390 to extend, the guide shaft 37 is switched to the extended working position.

As shown in the figure, the fixing base 2 has two side wall plates 51 formed by extending from two sides of the bottom plate, and the partition plate 3 divides the inside of the fixing base 2 into an upper connection cavity 31 and a lower connection cavity 32, and the counterweight 1 is connected with the lower connection cavity 32 in a matching manner. The elongated hole 33 is opened in the wall plate 51 on both sides of the upper connecting chamber 31. And the two side wall plates 51 are also provided with hinge holes 52, the hinge holes 52 are pivoted with hinge mandrels 34, the lower end of the needle harrow seat 390 is pivoted on the hinge mandrel 34 between the two side wall plates 51, correspondingly, the middle part of the needle harrow resetting guide sheet 5 is pivoted on the hinge mandrel 34 extending out of the outer side of one side wall plate 51, and the movement interference with the components in the inner space of the fixed seat 2 is avoided.

In addition, the resetting running track stability of the needle rake pushing device can be further optimized, and a guiding function can be added through the matched guide sleeve and the guide seat. As shown in fig. 2 and 3, the guiding sleeve 38 is sleeved on the guiding shaft 37 between the two side wall plates 51 and can move upwards synchronously with the fixing base 2; correspondingly, the guide seat 22 is fixedly arranged at the upper end of the fixed rail 21, the guide seat 22 is provided with an inner concave part 61 with a downward opening, and the inner concave part 61 is adapted to the top end of the fixed seat 2 to form upward movement limit for the fixed seat 2; the inner wall of the concave portion 61 on the near outer side is a guide wall surface 62 fitted to the guide sleeve 38, and the guide wall surface 62 is arranged so as to gradually converge from the top to the top, thereby constructing a return guide. With such arrangement, in the process that the rake seat 390 moves upwards along with the fixed seat 2, the guide sleeve 38 enters the concave part 61 of the guide seat 38, abuts against the guide wall surface 62 and continues to move upwards and inwards until the rake assembly 39 is completely reset after being separated from the fabric; similarly, during the downward displacement of the counterweight 1 under its own weight, the guide sleeve 38 is abutted against the guide wall surface 62 and displaced downward and outward by the elastic member 36, and then catches on the fabric again after being separated from the concave portion 61.

As shown in fig. 2 and 3 in particular, the guide seat 22 has a guide sloping block 23 formed to extend downward, the guide sloping block 23 encloses and forms an inner concave part 61, and the inner side surface of the guide sloping block 23 forms a guide wall surface 62 of the inner concave part 61; correspondingly, the inside surface of the needle harrow plate 390 is provided with a chute 393 matched with the guide sloping block 23, the chute 393 is vertically arranged, and the cross-sectional area of the chute 393 gradually increases from top to bottom. With the arrangement, as the fixed seat 2 rises, the guide shaft 37 sleeve slides along the inner side of the guide inclined block 23, and meanwhile, the guide inclined block 23 also slides in the sliding groove 393, so that the needle rake realizes the reset action; the chute 393 of the rake base 390 increases gradually from top to bottom, and can guide the inclined guide block 23 when the rake base 390 moves up and down, so as to effectively cooperate with the lifting action of the rake base 390.

Usually, the fabric itself has stretch elasticity, and in order to avoid over-pulling the fabric during knitting, the height position of the needle rake can be further limited, such as but not limited to: the pulling stroke of the fabric is controlled by the influence of the fabric material or the fabric density. As shown in the figure, the bottom of the counterweight block 1 has a limit groove 71 which is engaged with the corresponding clamping portion 72 to limit the height position of the needle rake pushing device, so as to avoid the influence of the overstretching fabric on the knitting quality.

As further shown in the figure, the limiting grooves 71 can be vertically arranged at intervals, and in actual operation, adjustment and control are specifically carried out according to use requirements, so that the descending stroke of the needle rake pushing device is limited, further fine control of the pulling force formed by the fabric is utilized, and different use situations are adapted. It is understood that the limiting groove 71 may also be provided on the counterweight (not shown), as long as the height position limitation with the clamping portion 72 can be performed, all within the scope of the claimed application.

In the scheme, the inner wall of the sliding rail 20 is also connected with a guide rail retainer 24, two sides of the guide rail retainer 24 are respectively provided with at least two groups of positioning holes 25, guide rail steel balls 26 matched and butted with the fixed rail 21 are arranged in the positioning holes 25, preferably, the positioning holes 25 are respectively provided with four groups of guide rail steel balls 26 on the guide rail retainer 24, and the guide rail steel balls 26 matched with the positioning holes 25 are synchronously connected; the guide rail retainer 24 is positioned on the inner wall of the sliding rail 20, so that when the sliding rail 20 moves up and down along the fixed rail 21, the guide rail steel balls 26 in the positioning holes 25 move along the fixed rail 21, and the reasonability of the movement of the sliding rail 20 on the fixed rail 21 is improved.

Correspondingly, a positioning plate 27 matched and positioned with the guide seat 22 is extended from the upper end of the fixed rail 21, a mounting hole 28 is formed in the positioning plate 27, sliding plates 29 are symmetrically extended forwards from two sides of the fixed rail 21, a groove 30 matched and abutted with the guide rail steel ball 26 is formed in each sliding plate 29, and the positioning plate 27 is connected with the guide seat 22 through the mounting hole 28, so that the stability of the connecting structure of the guide seat 22 is improved; the groove 30 formed in the outer side of the sliding plate 29 is preferably in an inner arc shape, so that the smoothness of the sliding rail 20 on the fixed rail 21 is effectively improved when the sliding plate is conveniently matched with the guide rail steel balls 26.

In addition to the aforesaid needle rake pushing devices, the present embodiment provides a flat knitting machine, which includes rollers, and also includes a plurality of needle rake unit assemblies sequentially arranged along the length direction of the rollers, each of the needle rake unit assemblies includes a driving part 42 and a plurality of needle rake pushing devices as mentioned above; please refer to fig. 5, which is an exploded view of the rake unit assembly according to the embodiment.

The needle rake unit assembly uses the driving part 2 as a power source, and preferably adopts a servo motor. The driving shaft 43, the driving sleeves 44 coaxially rotating with the driving shaft 43, and the reset push rods 412 pivotally connected to the push rod optical axis 41 transmit power to the corresponding needle and rake pushing devices. In the scheme, in one working cycle of each needle rake pushing device, acting force with a front-back pushing trend and acting force with an upward pushing trend need to be provided; of course, the direction of the corresponding acting force is not limited to the absolute front-back direction or the vertical direction, and it is within the scope of the claimed invention as long as the formed acting force pushing trend meets the functional requirements of the rake for lifting, disengaging the fabric and resetting.

Wherein, the shaft ends of the two sides of the transmission shaft 43 are respectively pivoted on the supporting plate bodies of the roller side plate 40 and the supporting plate 45, and the shaft end of one side is in transmission connection with the driving part 2 to provide the rotation driving force. The four driving sleeves 44 are respectively arranged corresponding to the four needle rake pushing devices, are sequentially sleeved on the transmission shaft 43 along the axial direction, and can rotate coaxially with the transmission shaft 43.

The two side shaft ends of the push rod optical axis 41 are respectively pivoted to the roller side plate 40 and the support plate body, and after the assembly is completed, the push rod optical axis 41 is arranged approximately parallel to the transmission shaft 43. The four reset push rods 412 are respectively arranged corresponding to the four needle rake pushing devices and are sequentially sleeved on the push rod optical axis 41 along the axial direction. Here, the reset push rods 412 can rotate relative to the push rod optical axis 41, and a push rod spacer 413 is arranged between adjacent reset push rods 412 in the unit, and the end surfaces on both sides of the push rod spacer 413 sleeved on the push rod optical axis 41 are axially abutted against the side portion of the reset push rod 412 for positioning, so that the reset push rods 412 can be effectively equally divided and simultaneously arranged in one-to-one correspondence with the driving sleeves 44.

The reset push rod 412 of the scheme is provided with a first matching part 4121 and a second matching part 4122 matched with the corresponding needle rake pushing device; the outer periphery of each drive sleeve 44 has an urging portion (441, 442) and is configured to: during the rotation of the driving sleeve 44 along the first rotation direction (clockwise direction) with the transmission shaft 43, the pushing portion can drive the rake assembly 39 of the rake pushing device to retract, the pushing portion can also push the reset push rod 412 through the first matching portion 4121, and the second matching portion 4122 drives the rake pushing device to move upwards; in the axial projection plane, the pushing portions on the four driving sleeves 44 are circumferentially spaced, that is, the pushing portions with the same function on the adjacent driving sleeves 44 are circumferentially staggered, so that at least one needle rake pushing device pulls the fabric in the working cycle of the needle rake unit assembly. In actual use, the corresponding rake seat 390 and rake assembly 39 are controlled to control the fabric pulling force at a single, partial or all positions in cooperation with the action of the drive sleeve 44 in one or more units.

For a plurality of needle harrow pusher of a needle harrow unit assembly, this scheme has further add quick reset function to adapt to different service condition needs, for example but not limited to shut down maintenance operating mode etc.. Please refer to fig. 5.

As shown in fig. 5, a bearing seat 420 is sleeved on the transmission shaft 43, and the bearing seat 420 is in one-way transmission connection with the transmission shaft 43 through a one-way rotating clutch 4, wherein the one-way rotating clutch 4 can be a one-way bearing or a one-way clutch. And is configured to: when the transmission shaft 43 rotates in the second rotation direction (counterclockwise direction), the bearing seats 420 rotate synchronously; that is, when the driving part 2 drives the transmission shaft 43 to rotate clockwise under the normal working state of the needle rake unit assembly, the bearing seat 420 does not follow up; when the transmission shaft 43 rotates in the counterclockwise direction, the bearing housing 420 follows to transmit the reset driving force. The same driving component is adopted as a power source for realizing normal work and reset action.

Wherein, the side of bearing frame 420 sets up cooperation portion (421) that resets, and this cooperation portion that resets is as the output of bearing frame 420, correspondingly, sets up on push rod optical axis 41 and can rather than coaxial pivoted pendulum rod 410, and the other end pressure of this pendulum rod 410 is supported cooperation portion (421) that resets to the configuration: when the reset matching part rotates along with the bearing seat 420, the swing rod 410 can be pushed to drive the push rod optical axis 41 to rotate; preferably, the return fitting portion may adopt a bearing 421, which rotates relative to the bearing seat 420 during the pushing process, so as to effectively reduce the frictional resistance between the return fitting portion and the swing link 410. Specifically, the rear end of the swing link 410 can be mounted on the mounting seat 411 provided on the roller side plate 40, thereby ensuring smooth operation.

In this scheme, adopt the synchronous reset that resets optical axis 6 realized all push rods 412 that reset in the unit, this optical axis 6 that resets passes through push rod reset connecting seat 7 and push rod optical axis 41 fixed connection. Specifically, one end of at least two push rod reset connecting seats 7 is fixedly arranged on the push rod optical axis 41, the reset optical axis 6 is inserted and arranged at the other end of the two push rod reset connecting seats 7, as shown in the figure, the reset optical axis 6 is arranged approximately parallel to the push rod optical axis 41, and thus, when the reset optical axis 6 rotates along with the push rod optical axis, the consistency of synchronous reset of all the reset push rods 412 driven by the reset optical axis 6 can be maintained.

Each reset push rod 412 is provided with a reset groove 4123, the shapes of the reset grooves 4123 are completely the same, as shown in the figure, the shaft body of the reset optical axis 6 is placed in the reset groove 4123 of each reset push rod 412, and can be switched between the first position a and the second position B of the reset groove 4123, specifically configured as follows: normally, the reset optical axis 6 is located at the first position a in the reset groove 4123; when the first matching portion 4121 of the reset push rod 412 is pushed by the second pushing portion 442 of the corresponding driving sleeve 44, the reset push rod 412 rotates and drives the pin rake pushing device to move up through the second matching portion 4122, and the reset optical axis 6 is located at the second position B in the reset groove 4123; here, the shape of the reset groove 4123 is such that each reset push rod 412 does not affect the normal position of the reset optical axis 6 when it is actuated; alternatively, when each reset push rod 412 is independently operated, no operational interference occurs with the reset optical axis 6 in the normal position.

By applying the scheme, firstly, the reset push rods 412 can be ensured to sequentially reach the reset working positions in the process of a normal working period; when the use condition requires that all needle rake push devices in the unit reset, the driving part 2 rotates reversely, and when the driving transmission shaft 43 rotates anticlockwise, based on the setting of the unidirectional rotation clutch piece 4, the bearing seat 420 rotates synchronously, the swing rod 410 is jacked up through the bearing 421, and the swing rod 410 drives the push rod optical axis 41 to rotate together, so that the reset optical axis 6 swings anticlockwise along with the push rod optical axis 41, and is switched from the first position A to the second position B, and the complete reset of the needle rake push devices in the unit is completed.

The following briefly describes the specific operation of the needle rake pushing device according to this embodiment:

first, normal operation mode.

In the woven state, the drive member 2 rotates forward to drive the transmission shaft 43 to rotate clockwise. When the rake pushing device before the rake is lifted is at the lowest position shown in fig. 6a, and the driving sleeve 44 rotates along with the transmission shaft 43, as shown in fig. 6b, when the first pushing portion 441 of the driving sleeve 44 presses against the rake reset guide piece 5, the rake reset guide piece 5 rotates around the hinge point between the rake reset guide piece and the fixed seat 2, and drives the rake seat 390 to retract and separate from the fabric; meanwhile, the second pushing portion 442 presses against the first engaging portion 4121 of the reset rod 412, and the rotating reset rod 412 pushes the counterweight block 1 to move upward through the second engaging portion 4122. As the second engaging portion 4122 pushes the counterweight 1 to move upward, the top end of the fixed seat 2 is placed in the concave portion 61 of the guide seat 22, and the guide sleeve 38 sleeved on the guide shaft 37 abuts against the guide wall surface 62 and moves upward and inward until the rake assembly 39 moves to the reset state shown in fig. 6 c. When the driving sleeve 44 continues to rotate, the second pushing portion 442 disengages from the reset push rod 412, the needle rake starts to move downward under the self weight of the counterweight block 1, the guide sleeve 38 abuts against the guide wall surface 62 and moves downward and outward, at this time, the elastic member 36 keeps pushing the needle rake seat 390 outward, and after the guide sleeve 38 disengages from the concave portion 61, the needle rake assembly 39 hooks the fabric again, and pulls the fabric to move downward to the position shown in fig. 6a, thereby completing a working cycle. Thereby performing a reciprocating cycle.

Wherein, each driving sleeve 44 in the unit assembly rotates simultaneously along with the transmission shaft 43, and based on the circumferentially staggered assembly relationship of the driving sleeves 44, the two pushing parts on each driving sleeve 44 sequentially trigger the same associated component, so that at least one needle rake pushing device pulls the fabric in the working period of the needle rake unit assembly.

Secondly, local regulation and control of the tension.

According to the requirement of the fabric, the tension regulation and control of a single unit and a local unit can be carried out, the needle rake limiting swing block swings the clamping part 181 on the side part of the needle rake limiting swing block to be matched with the corresponding limiting groove 71 to be clamped and positioned, and the needle rake pushing device is limited to be fixed.

In addition, when the rake is in the controlled descending position shown in fig. 7a and 7b before ascending, and the driving sleeve 44 rotates along with the transmission shaft 43, based on the same transmission correlation structure, the first pushing portion 441 of the driving sleeve 44 first presses against the rake return guide plate 5, and drives the rake seat 390 to retract and separate from the fabric; then, the second pushing portion 442 presses against the restoring rod 412 and pushes the weight block 1 to move upward.

And thirdly, resetting the whole unit.

When all the needle rake pushing devices in the unit need to reset, the driving part 2 rotates reversely, based on the setting of the unidirectional rotation clutch part 4, the bearing seat 420 rotates synchronously, the swing rod 410 is jacked up through the upper bearing 421, the swing rod 410 drives the push rod optical axis 41 to rotate together, the reset optical axis 6 swings anticlockwise along with the push rod optical axis 41 at the moment, the four reset push rods 412 are shifted, namely, the first position A is switched to the second position B, and all the resetting of the needle rake pushing devices in the unit is completed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (10)

1. The needle rake pushing device comprises a needle rake component configured with acupuncture; it is characterized by also comprising:

the sliding rail can be matched with the fixed rail in a sliding mode;

the fixed seat is fixedly arranged on the sliding rail and is displaced relative to the fixed rail under the action of a force application part for providing upward moving acting force;

the lower end of the needle harrow seat is hinged with the fixed seat, and the needle harrow component is arranged at the upper end outside the needle harrow seat so as to synchronously swing around a hinge center relative to the fixed seat with the needle harrow seat;

the middle part of the needle harrow resetting guide sheet is hinged with the fixed seat, the upper end of the needle harrow resetting guide sheet is in transmission connection with the needle harrow seat, and the lower end of the needle harrow resetting guide sheet is matched with a force application part for providing withdrawing acting force of the needle harrow.

2. The needle rake pushing device of claim 1, further comprising:

the counterweight block is fixedly arranged at the lower part of the fixed seat, and the lower end of the counterweight block is matched with a force application part for providing the upward moving acting force;

the elastic piece is arranged between the needle harrow seat and the fixed seat in a pre-deformed mode.

3. The needle and rake pushing device according to claim 2, wherein the elastic member is a compression spring, and concave blind holes are respectively formed on the pressing surfaces of the needle and rake seat and the fixed seat, which are pressed against the compression spring, so as to limit two end portions of the compression spring.

4. The needle rake pushing device according to claim 2, wherein the lower end of the needle rake base is hinged to the middle of the fixing base, and the middle of the needle rake return guide piece is hinged to the fixing base and the lower end of the needle rake base.

5. The needle harrow pushing device of claim 4, wherein the needle harrow resetting guide piece is in transmission connection with the needle harrow seat through a guide shaft, the shaft end of the guide shaft is inserted into a long hole formed in the fixed seat and can be switched between an extending working position and a retracting working position in the long hole, and the needle harrow resetting guide piece is configured to: under the pressing action of the force application part, the needle rake reset guide piece rotates around a hinge point between the needle rake reset guide piece and the fixed seat and drives the needle rake seat to retract, the guide shaft is switched to a retraction working position, and the elastic piece further deforms; the elastic piece releases deformation and can act on the needle and harrow seat, and when the needle and harrow seat is pushed to extend, the guide shaft is switched to an extending working position.

6. The needle and harrow pushing device of claim 5, wherein the fixing base has two side wall plates extending from two sides of the base plate, the long holes are formed on the two side wall plates, hinge holes are further formed on the two side wall plates, a hinge core shaft is pivoted in the hinge holes, the lower end of the needle and harrow seat is pivoted on the hinge core shaft between the two side wall plates, and the middle part of the needle and harrow resetting guide piece is pivoted on the hinge core shaft outside the wall plate on the extending side.

7. The needle rake pushing device of claim 6, further comprising:

the guide sleeve is sleeved on the guide shaft between the wall plates on the two sides;

the guide seat is fixedly arranged at the upper end of the fixed rail and provided with an inner concave part with a downward opening, and the inner concave part is matched with the top end of the fixed seat so as to limit the upward movement of the fixed seat; and the inner wall of the inner concave part close to the outer side is a guide wall surface adapted to the guide sleeve and is configured as follows: the guide wall surface changes from top to top in a gradually inward-contracting trend.

8. The needle and rake pushing device as claimed in claim 7, wherein the bottom of the fixing seat or the counter weight block is provided with a plurality of limiting grooves for clamping and adapting with the clamping portion, and the limiting grooves are vertically arranged at intervals; the guide seat is provided with a guide inclined block which extends downwards, the guide inclined block surrounds to form the concave part, and the inner side surface of the guide inclined block forms the guide wall surface; correspondingly, the inner side surface of the needle and harrow seat is provided with a sliding chute matched with the guide inclined block, the sliding chute is vertically arranged, and the cross section area of the sliding chute is gradually increased from top to bottom; the acupuncture of needle harrow subassembly and the integrative injection moulding of needle harrow main part, needle harrow subassembly passes through the horizontal cartridge of needle harrow main part sets up the upper end slot in the needle harrow seat outside.

9. Flat knitting machine, including the roller, its characterized in that still includes the needle harrow unit assembly that the multiunit set gradually along roller length direction, every needle harrow unit assembly includes:

a plurality of needle rake pushing devices of any one of claims 1 to 8 and a driving component;

the two side shaft ends of the transmission shaft are respectively pivoted to the supporting plate bodies of the roller side plate and the middle supporting plate, and the driving part provides a rotating driving force;

the driving sleeves are respectively arranged corresponding to the needle rake pushing devices, sequentially sleeved on the transmission shaft along the axial direction and can coaxially rotate with the transmission shaft;

the two side shaft ends of the push rod optical axis are respectively pivoted to the roller side plate and the supporting plate body;

the needle rake pushing devices are arranged on the needle rake body and are sleeved with the needle rake body in sequence along the axial direction;

the reset push rod is provided with a first matching part and a second matching part matched with the corresponding needle rake pushing device; the periphery of each driving sleeve is provided with an ejecting part and is configured as follows: in the process that the driving sleeve rotates along with the transmission shaft along a first rotating direction, the pushing part can drive the needle rake component of the needle rake pushing device to retract, and the pushing part can push the reset push rod through the first matching part and drive the needle rake pushing device to move upwards through the second matching part; in the axial projection plane, the pushing parts on the driving sleeves are arranged at intervals along the circumferential direction, so that at least one needle rake pushing device pulls the fabric in the working period of the needle rake unit assembly.

10. The flat knitting machine according to claim 9, wherein each of the rake unit assemblies further comprises:

the bearing block is sleeved on the transmission shaft, is in one-way transmission connection with the transmission shaft through a one-way rotating clutch piece, and is configured as follows: when the transmission shaft rotates along the second rotation direction, the bearing seats synchronously rotate; the second rotational direction is opposite to the first rotational direction;

the reset matching part is arranged at the side of the bearing seat;

the pendulum rod, one end with the coaxial rotation of push rod optical axis, the other end is pressed and is supported the cooperation portion that resets to the configuration: when the reset matching part rotates along with the bearing seat, the swing rod can be pushed to drive the push rod optical axis to rotate;

at least two push rod reset connecting seats, wherein one ends of the reset connecting seats are fixedly arranged on the push rod optical axes;

the reset optical axis is inserted at the other end of the at least two push rod reset connecting seats and is arranged in parallel relative to the push rod optical axis;

wherein, reset groove has been seted up on the push rod that resets, the axis body of the optical axis that resets is arranged in every reset groove of push rod that resets to can switch between the primary importance and the second place in reset groove, specifically configure to: under a normal state, the reset optical axis is located at a first position in the reset groove; when the reset push rod drives the needle rake pushing device to move upwards under the pushing of the corresponding pushing part of the driving sleeve, the reset optical axis is located at the second position in the reset groove.

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