CN210916506U - Lifting device for lifting - Google Patents

Abstract

The utility model discloses a bottom lifting device, the output end of a lifting motor is connected with a first synchronous belt in a transmission way, the first synchronous belt is in transmission with a transmission shaft, and the transmission shaft is in transmission with a second synchronous belt; a first sliding block is fixed on the first synchronous belt and can move up and down along a first linear guide rail; a second sliding block is fixed on the second synchronous belt and can move up and down along a second linear guide rail; a first fixing plate is fixed on the first sliding block, and a second fixing plate is fixed on the second sliding block; the first fixing plate and the second fixing plate are fixed with a bottom comb. The utility model relates to a lifting device at bottom of play adopts a elevator motor, through hold-in range and transmission shaft, cooperation linear guide for the synchronous uniformity on both sides is better when the comb at bottom of play goes up and down. The two ends of the bottom lifting comb can synchronously lift, and the damage to the bottom lifting comb and even the flat knitting machine due to the asynchronous lifting of the two sides of the bottom lifting comb is avoided.

Description

Lifting device for lifting

Technical Field

The utility model belongs to the technical field of the spare part technique and specifically relates to a lifting device plays end.

Background

The computerized flat knitting machine is an automatic machine with high technical content in knitting machine industry, and integrates the technologies of computer digital control, electronic drive, mechanical design and the like into a whole. The computer flat knitting machine can finish the subsequent knitting only by pulling the knitted fabric piece in the working process, namely, the knitted fabric piece can be smoothly knitted only in the pulling state. Since a general computer flat knitting machine is not provided with a bottom raising comb, before the formal piece knitting is carried out, a bottom raising fabric with the number of weaving lines of about 80-100 lines and the length of about 20-30mm needs to be woven, and after the bottom raising fabric is caught by a cloth roller at the lower part of a machine tool, a certain pulling force can be obtained by the piece knitting so as to carry out the formal piece knitting. Therefore, each piece of knitted fabric needs to be transited by the raised fabric with the thickness of 20-30mm, and after the piece is knitted, workers need to cut off the raised fabric (commonly called waste yarn) on the knitted piece, so that not only is the waste of the raised fabric seriously caused, but also the working procedure of the piece is increased, and the production efficiency is not high. In order to make up for the above shortcomings, a bottom lifting comb is provided for a computer flat knitting machine in the prior art, and a bottom lifting needle is used for hooking a bottom lifting yarn to provide a pulling force for a knitting piece. A lifting device is required to be arranged below the bottom lifting comb for lifting or descending the bottom lifting comb. The existing lifting of the bottom lifting comb is generally provided with a lifting motor on two sides respectively to lift the bottom lifting comb, the two sides have high requirements on synchronism, and the bottom lifting comb or even a flat knitting machine can be damaged once the matching is not good. The problem that two elevator motors bring is that the synchronization that can reach is not good to be adjusted, often can appear the phenomenon that the synchronism is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lifting device plays end uses a elevator motor, and the transmission of rethread hold-in range and transmission shaft makes the synchronism of the both sides of playing the end comb unanimous, through doing lifting or decline simultaneously in end comb both sides.

In order to solve the technical problem, the purpose of the utility model is to realize like this:

the utility model relates to a bottom lifting device, which is characterized in that the device comprises a lifting motor, a first synchronous belt, a second synchronous belt, a transmission shaft, a first slide block, a second slide block, a first linear guide rail and a second linear guide rail;

the output end of the lifting motor is in transmission connection with a first synchronous belt, the first synchronous belt is in transmission connection with a transmission shaft, and the transmission shaft is in transmission connection with a second synchronous belt;

a first sliding block is fixed on the first synchronous belt and can move up and down along a first linear guide rail; a second sliding block is fixed on the second synchronous belt and can move up and down along a second linear guide rail;

a first fixing plate is fixed on the first sliding block, and a second fixing plate is fixed on the second sliding block; the first fixing plate and the second fixing plate are fixed with a bottom comb.

As a further explanation of the above scheme, the first synchronous belt is in transmission connection with the transmission shaft through the first rotating wheel, the transmission shaft is in transmission connection with the second synchronous belt through the second rotating wheel, and the other end of the second synchronous belt is connected with the third rotating wheel.

As a further explanation of the above scheme, two ends of the transmission shaft are respectively connected with the first connecting plate and the second connecting plate; the first linear guide rail and the lifting motor are fixed with the first connecting plate; and the second linear guide rail and the third rotating wheel are fixed with the second connecting plate.

As a further explanation of the above scheme, the lifting motor is fixed to the first connecting plate through a lifting motor fixing plate and a lifting motor fixing stud.

As a further explanation of the above scheme, the first slider is fixed to the first synchronous belt by a first fixed block, and the first slider and the first fixed block are located on two sides of the first synchronous belt; the second slider is fixed mutually through second fixed block and second hold-in range, second slider, second fixed block are located the both sides of second hold-in range.

The utility model has the advantages that: the utility model relates to a lifting device at bottom of play adopts a elevator motor, through hold-in range and transmission shaft, cooperation linear guide for the synchronous uniformity on both sides is better when the comb at bottom of play goes up and down. The two ends of the bottom lifting comb can synchronously lift, and the operation of the bottom lifting comb and even the flat knitting machine due to asynchronous lifting of the two sides of the bottom lifting comb is avoided.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a partial view of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an enlarged view of a portion of FIG. 4 at B;

FIG. 6 is a schematic structural view of a comb;

FIG. 7 is a schematic view of the coupling of the comb to the wire feeder;

fig. 8 is a schematic structural view of the base needle.

The designations in the figures illustrate the following: 1-a lifting motor; 2-a first connection plate; 3-a second connecting plate; 4-a first synchronization belt; 5-a second synchronous belt; 6-a first rotating wheel; 7-a second rotating wheel; 8-a third rotating wheel; 9-a transmission shaft; 10-a first slider; 11-a second slide; 12-a first linear guide; 13-a second linear guide; 14-a first fixing plate; 15-a second fixing plate; 16-a bottom comb; 17-a locking wire; 18-a base needle; 19-a recess; 20-arc-shaped bulge; 21-a threading hole; 22-fixed block; 23-lifting motor fixing the bottom plate; 24-lifting motor fixing stud; 25-a wire feeding motor; 26-a sensor; 27-active wire feeding wheel; 28-driven wire feeding wheel; 29-bearing tube.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The present embodiment will be described in detail with reference to fig. 1 to 8. The improved integrated bottom lifting device is used for lifting the bottom of a knitted piece of a computerized flat knitting machine and is installed on the computerized flat knitting machine. As shown in fig. 1 and 3, the bottom raising device comprises a bottom raising comb 16, a locking wire 17, a lifting mechanism and a wire feeding mechanism. The lifting mechanism is fixed with the flat knitting machine body through the first connecting plate 2 and the second connecting plate 3.

The bottom lifting comb 16 is provided with a plurality of bottom lifting needles 18 which are arranged at intervals along a straight line, the top of each bottom lifting needle 18 is provided with a thread passing hole 21, and the blocking thread 17 passes through the thread passing hole 21. The lifting mechanism is fixedly connected with the bottom lifting comb 16 and can drive the bottom lifting comb 16 to move up and down. The wire feeding mechanism is connected with a blocking wire 17, and the blocking wire 17 can be driven by the wire feeding mechanism to penetrate into the wire penetrating hole 21 or be drawn out of the wire penetrating hole. The lock wire 17 may be a metal wire having a certain mechanical strength such as a steel wire, and a spring steel wire is preferably used. The spring steel wire is a superfine and elastic steel wire, the diameter of the spring steel wire is between 0.3 and 0.8mm, the spring steel wire has good tensile strength, elastic limit, toughness and fatigue resistance, the spring steel wire is in a linear state in a natural state, can be bent under the action of the outer edge, and can restore the linear state again after the external force is removed. The spring steel wire can be bent along with the structural distribution of the bottom lifting device and is restored to be in a linear state when the coil is blocked, so that the coil blocking effect is achieved, the space occupied by the locking wire 17 can be saved, and the bottom lifting device occupies less space of the flat knitting machine.

The bottom lifting mechanism according to the present embodiment includes a lifting motor 1, a first timing belt 4, a second timing belt 5, a transmission shaft 9, a first slider 10, a second slider 11, a first linear guide 12, and a second linear guide 13.

The lifting motor 1 is fixed with the first connecting plate 2 through a lifting motor fixing plate 23 and a lifting motor fixing stud 24. The lifting motor fixing plate 23 is fixed with the first connecting plate 2 through the motor fixing stud 24, and the lifting motor 1 is fixed on the lifting motor fixing plate 23, so that a certain distance is reserved between the lifting motor 1 and the first connecting plate 2. The output end of the lifting motor 1 is in transmission connection with the first synchronous belt 4, and the output end of the lifting motor 1 is positioned in the interval between the output end of the lifting motor and the first connecting plate 2. The rotation of the lifting motor 1 drives the rotation of the first synchronous belt through the output end thereof.

The first synchronous belt 4 is in transmission with the transmission shaft 9, and the transmission shaft 9 is in transmission with the second synchronous belt. Specifically, the first synchronous belt 4 drives the first rotating wheel 6 fixed with the transmission shaft 9 to drive the transmission shaft 9 to rotate. Both ends of the transmission shaft 9 are connected with the first connecting plate 2 and the second connecting plate 3 through bearings so that the transmission shaft 9 can rotate. A second rotating wheel 7 is fixed at the other end of the transmission shaft 9, a third rotating wheel 8 is further fixed on the second connecting plate 3, and a second synchronous belt 5 is arranged between the second rotating wheel 7 and the third rotating wheel. The rotation of the transmission shaft 9 drives the second synchronous belt 5 to move through the second rotating wheel 7.

A first slider 10 is fixed to the first timing belt 4, and the first slider 10 is movable up and down along a first linear guide 12. The first slider 10 and the first fixing block 22 are positioned at both sides of the first timing belt 4 and fixed to the first timing belt 4 by bolts. When the first timing belt 4 moves, the first slider 10 is moved up and down along the first linear guide 12. The first timing belt 4 is disposed in parallel with the first linear guide 12.

A second slider 11 is fixed to the second timing belt 5, and the second slider 11 is movable up and down along a second linear guide 13. The second slider 11 and the second fixing block 25 are located on both sides of the second timing belt 5, and are fixed to the second timing belt 5 by bolts. When the second timing belt 5 moves, the second slider 11 is driven to move up and down along the second linear guide 13. The second synchronous belt 5 is arranged in parallel with the second linear guide 13.

Further, a first fixing plate 14 is fixed to the other side of the first slider 10. A second fixing plate 15 is fixed to the other side of the second slider 11. The first and second fixing plates 14 and 15 are fixed to a bottom comb 16.

The whole lifting mechanism works as follows: the rotation of elevator motor 1 drives the motion of first hold-in range 4 through the output, and first hold-in range 4 drives second hold-in range 5 simultaneous equidirectional motion through transmission shaft 9. The movement of the first synchronous belt 4 drives the first fixed block 10 fixed with the first synchronous belt to move along the first linear guide rail 12. The second synchronous belt 5 moves to drive the second slide block 11 fixed with the second synchronous belt to move along the second linear guide rail 13. The first slider 10 and the second slider 11 can drive the first fixing plate 14 and the second fixing plate 15 fixed with the first slider to move up and down, and further drive the bottom-raising comb 16 fixed with the first slider to move up and down, so as to complete the lifting of the bottom-raising comb 16.

One end of the bottom comb 16 is an arc end 20, and a guide hole is arranged at the arc edge of the arc end 20, and the guide hole is similar to the arc end 20 in shape and is arc-shaped. The locking thread 17 is arranged in the guide hole in a penetrating way, and the guide hole plays a guiding role for the locking thread 17, so that the locking thread 17 can more easily penetrate through the thread penetrating hole 21 on the base needle 18. The arc-shaped guide hole can enable the locking wire 17 to be in an arc-shaped state, and excessive bending cannot be generated, so that the wire feeding mechanism can drive the locking wire 17 more smoothly. The locking wire 17 is horizontal when passing out of the guide hole, and can pass through the wire-passing hole 21 more easily.

In the conventional use of the starter needle 18, which has a generally circular cross section, it is difficult to fix the starter needle 18 to the starter comb 16 by aligning the thread passing hole 21 of the starter needle 18 having a circular cross section.

In response to the above problem, the starter needle 18 used comprises a rectangular end 30 of rectangular hole cross section, and a circular arc end 31 exhibiting a circular arc shape. The arc end 1 is provided with a threading hole 21. In particular to a circular arc end 31 obtained by processing one end of a metal strip material with a rectangular section. The distance between the vertex of the edge of the threading hole 21 arranged at the arc end 31 and the vertex of the arc quotient 31 is 0.3mm, the specification of the rectangular section is 0.7 x 1.5mm, namely the thickness is 0.7mm, and the width is 1.5 mm. The length of the whole bottom raising needle is 25-30 mm.

The threading hole 21 is a cylinder having a diameter 1.3 to 1.5 times the diameter of the locking wire 17. Specifically, the diameter of the used locking wire 17 is 0.7mm, and the diameter of the threading hole is 0.9 mm. Through experimental tests, when the diameter of the threading hole 21 is 1.3-1.5 times of that of the blocking wire 17, the blocking wire can be easily threaded into the threading hole 21, and the strength of the arc end of the base needle 18 can be ensured.

Alternatively, the threading hole 21 is frustum-shaped, i.e., one end is a circle with a larger diameter and the other end is a circle with a smaller diameter. The central axis of the threading hole 21 is perpendicular to the plane of the circular arc. The circular arc-shaped arrangement of one end of the bottom raising needle 18 can prevent the bottom raising needle 18 from damaging the yarn when in use. The larger diameter end of the frustoconical threading hole 21 is threaded into the locking thread 17, which makes threading easier. When the locking wire protrudes from the previous wire through hole 21, the locking wire 17 may incline to a certain degree and does not vertically penetrate into the next wire through hole 21, and as the diameter of the penetrating end is larger, as long as the penetrating end of the locking wire 17 is within the diameter range, the locking wire 17 can penetrate out from the end with the smaller diameter of the wire through hole through the side wall of the cone frustum during the penetrating, so that a certain fault tolerance rate is achieved. More specifically, one end of the threading hole 21 is 1.5 to 2 times the diameter of the locking wire 17, and the other end of the threading hole is 1.3 to 1.5 times the diameter of the locking wire 17.

A concave part 19 is arranged on the bottom lifting comb 16, and the concave part 19 is rectangular and is matched with the section of the rectangular end of the bottom lifting needle 18. The threading holes 21 of the knock-up pins 18 are aligned by placing the knock-up pins 18 in the recesses 19. It is easier to seal off the wire 17 when it passes through the wire feed hole 21. When the lock-up needles 18 are fixed to the lock-up comb 16, the side of the thread passing hole 21 having a large area is directed in the direction in which the lock-up thread 17 passes.

In the existing wire feeding mechanism, the same as the lifting mechanism is generally fixed on the flat knitting machine body, in such an arrangement, when the lifting mechanism is lifted, the wire feeding mechanism needs to perform wire feeding and wire returning operations at the same time, the lifting mechanism and the wire feeding mechanism are required to have high synchronism, and if not, the lock wire can be bent or wire returned and separated from the wire penetrating hole 21 of part of the base needle 18. The utility model discloses in, wire feeder and play end comb 16 are fixed mutually, can go up and down along with the lift of play end comb 16, need not consider with elevating system's synchronism.

In this embodiment, the wire feeding mechanism includes two pairs of driving wire feeding wheels 27 and driven wire feeding wheels 28 which are oppositely arranged, the driving wire feeding wheels 27 are driven by the wire feeding motor 25 to rotate, and the driving wire feeding wheels 27 and the driven wire feeding wheels 28 clamp the lock wire 17, when the wire feeding motor 25 rotates, the driving wire feeding wheels 27 rotate to drive the driven wire feeding wheels 28 to rotate in opposite directions, so as to forward convey the lock wire 17. The rotation of the wire feeding motor 27 drives one of the driving wire feeding wheels 27 to rotate, and the two driving wire feeding wheels 27 are in gear transmission. Further, on the surface of the driving wire feeding wheel 27 and/or the driven wire feeding wheel 28, there is provided an annular groove for passing the blocking wire 17, so as to increase the contact area of the blocking wire 17 with the driving wire feeding wheel 27 and the driven wire feeding wheel 28, and to make the movement of the blocking wire 2 more stable. In this embodiment, the driving wire feeding wheel 27 and the driven wire feeding wheel 28 are provided with annular grooves. The wire feeding motor 25 is fixed to the lower portion of the rising comb 16 by a rod having an i-shaped groove. The bar having the i-shaped groove is fixed to the lower portion of the comb 16.

The wire feeder in question also comprises a support tube 29, which is a plastic tube, in which support tube 29 the lock wire 17 moves during use. Further, the support tube 29 passes through a plurality of sensors 26 for detecting the position of the lock wire and providing a signal for rotation of the wire feed motor 25. The sensor 26 is also attached to a rod having an i-slot attached to the wire feed motor 25. The sensor 26 used is an annular proximity sensitive switch sensor.

The working process of the bottom initiating device on the computerized flat knitting machine is as follows:

s1, the knitting mechanism of the computer flat knitting machine weaves a round with knitting threads to form a line of coils which are arranged in a continuous Z shape on a horizontal plane, and the knitting mechanism stops.

S2, the bottom raising comb 16 starts to rise from the initial position through the gap between the two cloth roller under the driving action of the lifting mechanism, so that the tops of the bottom raising needles 18 which are arranged at intervals penetrate through the Z-shaped coil and are higher than the plane formed by a row of coils, and the lifting mechanism stops.

S3, the blocking wire 17 sequentially and alternately penetrates through the tops of the bottom lifting needles 18 under the driving action of the wire feeding mechanism, after the blocking wire 17 penetrates through a row of bottom lifting needles 18, the wire feeding mechanism stops, and at the moment, the blocking wire 17 is positioned above a row of coils; the bottom comb 1 starts to descend under the driving action of the lifting mechanism, the first row of coils woven by the computer flat knitting machine are tightened, and at the moment, the first row of coils woven by the computer flat knitting machine are blocked by the blocking wire 17.

S4, the knitting mechanism of the computer flat knitting machine starts to knit back and forth by knitting yarns, meanwhile, the bottom comb 16 starts to descend under the driving action of the lifting mechanism, the descending speed of the bottom comb 16 is synchronous with the knitting speed of the knitting mechanism, and the fabric piece is subjected to the pulling force of the bottom comb 16, so that the knitting mechanism of the computer flat knitting machine can knit the fabric piece normally.

S5, the bottom lifting comb 16 pulls the knitted fabric downwards, when the bottom lifting comb 16 descends to pass through a gap between two cloth winding rollers, the knitted fabric is caught by the two cloth winding rollers rotating in opposite directions, the lifting mechanism stops, the knitted fabric is pulled by the two cloth winding rollers rotating in opposite directions, and the knitting mechanism of the computer flat knitting machine continues to knit the knitted fabric normally.

S6, after the knitted piece is rolled by the two cloth roller rolls, the bottom comb 16 is driven by the lifting mechanism to descend to the initial position, and the lifting mechanism stops; after the knitting mechanism of the computer flat knitting machine carries out knitting again for a plurality of rows, the blocking wires 17 are driven by the wire feeding mechanism to sequentially and alternately draw out the tops of the bottom lifting needles 18, the blocking of the first row of coils by the blocking wires 17 is released, after the blocking wires 17 are drawn out from all the bottom lifting needles 18, the wire feeding mechanism stops, and the bottom lifting process of the whole knitted piece is completed.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (5)

1. A bottom lifting device is characterized by comprising a lifting motor (1), a first synchronous belt (4), a second synchronous belt (5), a transmission shaft (9), a first sliding block (10), a second sliding block (11), a first linear guide rail (12) and a second linear guide rail (13);

the output end of the lifting motor (1) is in transmission connection with a first synchronous belt (4), the first synchronous belt (4) is in transmission connection with a transmission shaft (9), and the transmission shaft (9) is in transmission connection with a second synchronous belt (5);

a first sliding block (10) is fixed on the first synchronous belt (4), and the first sliding block (10) can move up and down along a first linear guide rail (12); a second sliding block (11) is fixed on the second synchronous belt (5), and the second sliding block (11) can move up and down along a second linear guide rail (13);

a first fixing plate (14) is fixed on the first sliding block (10), and a second fixing plate (15) is fixed on the second sliding block (11); the first fixing plate (14) and the second fixing plate (15) are fixed with a bottom comb (16).

2. The bottom lifting device according to claim 1, wherein the first synchronous belt (4) is in transmission connection with a transmission shaft (9) through a first rotating wheel (6), the transmission shaft (9) is in transmission connection with a second synchronous belt (5) through a second rotating wheel (7), and the other end of the second synchronous belt (5) is connected with a third rotating wheel (8).

3. The bottoming lifting device according to claim 2, wherein two ends of the transmission shaft (9) are rotatably connected with the first connecting plate (2) and the second connecting plate (3) respectively; the first linear guide rail (12) and the lifting motor (1) are fixed with the first connecting plate (2); the second linear guide rail (13) and the third rotating wheel (8) are fixed with the second connecting plate (3).

4. The bottoming lifting device according to claim 3, wherein the lifting motor (1) is fixed with the first connecting plate (2) through a lifting motor fixing plate (23) and a lifting motor fixing stud (24).

5. The bottoming lifting device according to claim 1, wherein the first sliding block (10) is fixed with the first synchronous belt (4) through a first fixing block (22), and the first sliding block (10) and the first fixing block (22) are positioned on two sides of the first synchronous belt (4); the second sliding block (11) is fixed with the second synchronous belt (5) through a second fixed block (25), and the second sliding block (11) and the second fixed block (25) are located on two sides of the second synchronous belt (5).

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