There is crochet hook swing mechanism on knot fishing net machine
Technical field
The present invention relates to a kind of crochet hook swing mechanism on knot fishing net machine that has, belong to aquatic products articles for use technical field.
Background technology
Reticulated is divided into be had junction type and without junction type, is applicable to respectively different use occasions.If claimed structure is more stable, as net, used for aquiculture net cage etc. for fishing, general use has junction type reticulated.In architectural engineering with safety net, other occasion with sunshade net etc., generally adopt knotless net shape fabric.Knotless net shape fabric generally weaves by few guide bar warp knitting machine, has knot reticulated general using to have knot fishing net machine to weave.In order to realize, be woven with knot reticulated, in having junction type fishing net machine, the motion of upper crochet hook is the nucleus movement of complete machine, and its effect is that knitmesh warp is tied a knot.For upper crochet hook, its motion comprises the requirement of forms of motion and big or small two aspects of motion.On forms of motion, in requirement, crochet hook is done the oscillating motion around fixed point; Motion size comprises again two aspects, the one, and the size of pendulum angle amplitude, the 2nd, the Changing Pattern requirement of moving displacement in swing process, pendulum angle amplitude size can realize by linkage or cam mechanism.And the needle movement of rising to the bait of prior art adopts general linkage more single to warp knotting, simultaneously often because upper crochet hook swings not in place or moving displacement amount is inadequate, thereby the needle movement that causes rising to the bait does not carry out easily causing in knotting process knotting firm or can not effectively complete knotting to warp, make the fishing net born second-rate, must carry out the reparation of fishing net anastomose, thereby strengthened operator's labour intensity, reduced the operating efficiency of complete machine.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, design a kind of crochet hook swing mechanism on knot fishing net machine that has with plane cam double cam, make it not only meet the forms of motion requirement of upper crochet hook, and meet the requirement of its motion size and Changing Pattern, thereby high-qualityly effectively complete the work of tying crochet hook swing mechanism on fishing net machine.
Of the present invention have knot fishing net machine on crochet hook swing mechanism, comprise driving gear (1), driven gear (2), grooved cam (3), outer contour (3-1), inner outline (3-2), roller (4,6), guide rod (5), frame-shaped construction (5-1), side link (7-1), upper crochet hook needle-bar (7-2), upper crochet hook (7-3), axle (A
0), main shaft (B
0), upper crochet hook needle-bar swinging axle (D
0), be located at main shaft (B
0) on fixed pivot (B
0), be located at crochet hook needle-bar swinging axle (D
0) on fixed pivot (D
0) and pin joint (C, D
1),
Described driving gear (1) is fixed on axle (A
0) on;
Described driven gear (2) is fixed on main shaft (B
0) on; Described driving gear (1) and driven gear (2) engagement, form gear drive, described driven gear (2) is provided with grooved cam (3), grooved cam (3) is upper with outer contour (3-1) and inner outline (3-2), and described roller (6) is located in the outer contour (3-1) of grooved cam (3) and the groove of inner outline (3-2) formation; The diameter of described roller (6) is identical with groove width;
The center of described roller (6) and guide rod (5) are hinged by revolute pair at pin joint (C), described grooved cam (3) and be that guide rod (5) has formed planar cam mechanism with the cam follower of roller (6), in described planar cam mechanism, grooved cam (3) is motion input component, and guide rod (5) is movement output part;
Described guide rod (5) has frame-shaped construction (5-1) in the middle of its two-end-point, the width of frame-shaped construction (5-1) is identical with the diameter of roller (4), it is upper that the frame-shaped construction (5-1) of guide rod (5) is enclosed within roller (4), and the center empty set of described roller (4) is arranged on main shaft (B
0) upper, can be around main shaft (B
0) on fixed pivot (B
0) swing; One end of described guide rod (5) and side link (7-1) are at pin joint (D
1) hinged by revolute pair; Described guide rod (5), around main shaft (B
0) on fixed pivot (B
0) roller (4) and side link (7-1) the formation guide-bar mechanism that swing, in described guide-bar mechanism, guide rod (5) is motion input component, side link (7-1) is movement output part;
Described side link (7-1) and upper crochet hook needle-bar (7-2) are as a whole, are all connected in crochet hook needle-bar swinging axle (D
0) fixed pivot (D
0) upper, described upper crochet hook needle-bar (7-2) and side link (7-1) opposite direction, described upper crochet hook (7-3) is fixedly mounted on crochet hook needle-bar (7-2).
Described main shaft (B0), upper crochet hook needle-bar (7-2), upper crochet hook needle-bar swinging axle (D0) all have the length the same with complete machine length, and parallel installation;
The mechanism that crochet hook in described driving (7-3) swings, generally be arranged on the both sides of machine-wide direction, and there are respectively two groups of parallel to each other being synchronized with the movement of identical mechanism, the common above crochet hook needle-bar 7-2 that drives swings, described upper crochet hook 7-3 is provided with many pieces according to the fabric width of institute's making fishing net, it is upper that order is arranged in crochet hook needle-bar 7-2, and install side by side along machine length direction.
Principle of the present invention is as follows: share three layers of constitutions' series connection and realize the pendulum angle size of final Motor execution part (upper crochet hook) and the requirement of forms of motion.First order mechanism is gear drive, and the higher rotation speed of motor is slowed down; Second level mechanism is planar cam mechanism, the rotation of cam is converted to the traveling priority of cam follower; Third level mechanism is oscillating guidebar mechanism, and guide rod is motion input component, and the swing of side link is movement output part, changes traveling priority into reciprocally swinging, and in driving, crochet hook swings.
Of the present invention have knot fishing net machine on crochet hook swing mechanism, there is following good effect:
1) utilize the outline line of cam to change the motion change disciplinarian request that meets upper crochet hook complexity, to adapt to the width of mesh of mesh grid, it is convenient to change;
2) realizing mechanism has adopted by gear drive, planar cam mechanism, guide-bar mechanism
The mode of three groups of simple mechanism series connection forms, and avoids using parallel institution, and plane mechanism is simple in structure, the motion design requirement that is content with very little, and easy to process, cost is lower;
3) relatively moving between guide rod and centering block in guide-bar mechanism, structurally adopt the mode of relatively rolling to realize, sliding friction is become to rolling friction, thus the frictional force while having reduced relative motion between part, reduce stress and wearing and tearing, be beneficial to machine at a high speed.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation below, wherein: Fig. 1 is the combined mechanism sketch of realizing the needle movement of rising to the bait;
Fig. 1 is the structural representation that has crochet hook swing mechanism on knot fishing net machine of the present invention.
Wherein, 1 is driving gear, and 2 is driven gear, and 3 is grooved cam, and 3-1 is outer contour, and 3-2 is inner outline, and 4,6 is roller, and 5 is guide rod, and 5-1 is frame-shaped construction, and 7-1 is side link, and 7-2 is upper crochet hook needle-bar, and 7-3 is upper crochet hook.
The specific embodiment
As shown in Figure 1, of the present invention have knot fishing net machine on crochet hook swing mechanism, comprise driving gear (1), driven gear (2), grooved cam (3), outer contour (3-1), inner outline (3-2), roller (4,6), guide rod (5), frame-shaped construction (5-1), side link (7-1), upper crochet hook needle-bar (7-2), upper crochet hook (7-3), axle (A
0), main shaft (B
0), upper crochet hook needle-bar swinging axle (D
0), be located at main shaft (B
0) on fixed pivot (B
0), be located at crochet hook needle-bar swinging axle (D
0) on fixed pivot (D
0) and pin joint (C, D
1),
Described driving gear (1) is fixed on axle (A
0) on;
Described driven gear (2) is fixed on main shaft (B
0) on; Described driving gear (1) and driven gear (2) engagement, form gear drive, described driven gear (2) is provided with grooved cam (3), grooved cam (3) is upper with outer contour (3-1) and inner outline (3-2), and described roller (6) is located in the outer contour (3-1) of grooved cam (3) and the groove of inner outline (3-2) formation; The diameter of described roller (6) is identical with groove width;
The center of described roller (6) and guide rod (5) are hinged by revolute pair at pin joint (C), described grooved cam (3) and be that guide rod (5) has formed planar cam mechanism with the cam follower of roller (6), in described planar cam mechanism, grooved cam (3) is motion input component, and guide rod (5) is movement output part;
Described guide rod (5) has frame-shaped construction (5-1) in the middle of its two-end-point, the width of frame-shaped construction (5-1) is identical with the diameter of roller (4), it is upper that the frame-shaped construction (5-1) of guide rod (5) is enclosed within roller (4), and the center empty set of described roller (4) is arranged on main shaft (B
0) upper, can be around main shaft (B
0) on fixed pivot (B
0) swing; One end of described guide rod (5) and side link (7-1) are at pin joint (D
1) hinged by revolute pair; Described guide rod (5), around main shaft (B
0) on fixed pivot (B
0) roller (4) and side link (7-1) the formation guide-bar mechanism that swing, in described guide-bar mechanism, guide rod (5) is motion input component, side link (7-1) is movement output part;
Described side link (7-1) and upper crochet hook needle-bar (7-2) are as a whole, are all connected in crochet hook needle-bar swinging axle (D
0) fixed pivot (D
0) upper, described upper crochet hook needle-bar (7-2) and side link (7-1) opposite direction, described upper crochet hook (7-3) is fixedly mounted on crochet hook needle-bar (7-2).
Described main shaft (B0), upper crochet hook needle-bar (7-2), upper crochet hook needle-bar swinging axle (D0) all have the length the same with complete machine length, and parallel installation;
The mechanism that crochet hook in described driving (7-3) swings, generally be arranged on the both sides of machine-wide direction, and there are respectively two groups of parallel to each other being synchronized with the movement of identical mechanism, the common above crochet hook needle-bar 7-2 that drives swings, described upper crochet hook 7-3 is provided with many pieces according to the fabric width of institute's making fishing net, it is upper that order is arranged in crochet hook needle-bar 7-2, and install side by side along machine length direction.
Of the present invention have knot fishing net machine on crochet hook swing mechanism, the course of work is as follows:
Axle A0 is driven by motor, is fixed with driving gear 1 on it, drives the driven gear 2 being engaged with to rotate.On the wheel body of driven gear 2, be processed with grooved cam 3, wherein, 3-1 is outer contour, and 3-2 is inner outline.Driving gear 1 by motor through band transmission deceleration rear drive, grooved cam 3(outer contour 3-1 and inner outline 3-2) structure on driven gear 2 wheel bodys, the shape fixed pivot B0 on main shaft B0 together in aggregates rotates.
Roller 6 is placed in the 3-1 of grooved cam 3 and the groove that 3-2 forms, and the diameter of roller 6 is identical with the width of groove, and the center of roller 6 and guide rod 5 are hinged by revolute pair at C pin joint.When grooved cam 3 rotates with driven gear 2, driving cam means driven member is that guide rod 5 is made traveling priority.Because roller 6 is hinged by revolute pair with guide rod 5 at C point, so, between the inside and outside outline line of roller 6 and grooved cam 3 (3-1 and 3-2), be rolling friction.Because roller 4 empty sets are at main shaft B
0upper, do asynchronous rotation with main shaft, therefore at guide rod 5 up and down reciprocatingly during traveling priority, roller 4 is also rolling friction with the frame-shaped construction (5-1) of guide rod 5.
Guide rod 5 has frame-shaped construction (5-1) in the middle of its two-end-point, and the width of frame-shaped construction (5-1) is identical with the diameter of roller 4, and during installation, roller 4 is placed in the frame-shaped construction (5-1) of guide rod 5, is also that the frame-shaped construction (5-1) of guide rod 5 is enclosed within on roller 4.It is upper that the center empty set of roller 4 is arranged on main shaft B0, i.e. rotation asynchronous with main shaft.Such structure makes guide rod 5 can, along with roller 4 swings around B0 axle, meanwhile, make again guide rod 5 make up and down reciprocatingly traveling priority by B0 point on the one hand.One end of guide rod 5 is connected with revolute pair at D1 point with side link 7-1, and side link 7-1 swings around upper crochet hook needle-bar swinging axle D0.When guide rod 5 moves as reciprocating linear under the driving of grooved cam 3, drive side link 7-1 reciprocally swinging.It is upper that side link 7-1 is fixedly mounted on crochet hook needle-bar swinging axle D0, and when side link 7-1 swings, upper crochet hook needle-bar swinging axle D0 swings thereupon.Side link 7-1 and upper crochet hook needle-bar 7-2 are an integral body, together the fixed pivot D on D0 axle
0spot wobble.It is upper that upper crochet hook 7-3 is fixedly mounted on crochet hook needle-bar 7-2, and swing with upper crochet hook needle-bar 7-2 and side link 7-1.