CN114775119B - Doffing device of spinning frame - Google Patents
Doffing device of spinning frame Download PDFInfo
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- CN114775119B CN114775119B CN202210336933.2A CN202210336933A CN114775119B CN 114775119 B CN114775119 B CN 114775119B CN 202210336933 A CN202210336933 A CN 202210336933A CN 114775119 B CN114775119 B CN 114775119B
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- mounting plate
- doffing
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- 238000009987 spinning Methods 0.000 title claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 99
- 238000004891 communication Methods 0.000 claims description 2
- 210000002310 elbow joint Anatomy 0.000 claims 2
- 238000000034 method Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 210000000707 wrist Anatomy 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000000245 forearm Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
- D01H9/02—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention discloses a doffing device, which belongs to doffing equipment of a spinning frame. Comprising the following steps: the pipe gripper comprises a mounting plate, a movable plate, a driving source and a pipe gripper; the mounting plate is arranged at the top of the lifting herringbone arm, at least one group of upper connecting rods and lower connecting rods are hinged between the mounting plate and the movable plate, and the upper connecting rods, the lower connecting rods, the mounting plate and the movable plate form a movable parallelogram mechanism; one end of the driving source is hinged to the bottom of the mounting plate, and the other end of the driving source is arranged on the upper connecting rod, the lower connecting rod or the movable plate, so that the parallelogram mechanism expands or contracts to drive the movable plate to transversely move along the mounting plate; the yarn grasping devices are uniformly arranged on one side of the movable plate far away from the mounting plate. The invention adopts the mode that the toggle mechanism driven by the double cylinders and the parallelogram link mechanism are mutually coupled, not only can reduce the volume of the whole doffing device, but also can bear the force required by the yarn grasping device when pulling out the yarn tube, and especially can bear the larger tube pulling force required by the unexpected occurrence of the yarn tube pulling.
Description
Technical Field
The invention belongs to doffing equipment of a spinning frame, in particular to a doffing device of the spinning frame, which is suitable for the transformation of an old spinning frame.
Background
The spinning frame is an important device with large surface and wide quantity in the production flow of the textile industry, and the quality of the performance directly influences various aspects such as the quality of finished yarn, economic benefit and the like. The doffing process in the spinning process of the spinning frame is the most labor-intensive, so the spinning frame with the highly-automated collective doffing device is the main stream of the market. The technical improvement of the existing spinning frame which is not provided with the integrated doffing device in the market is also a necessary trend.
At present, the movement process of the integrated doffing device applied to the spinning frame is as follows: the doffing air frame provided with the yarn tube gripping device is lifted under the action of the herringbone connecting rod mechanism and swings along the feeding and discharging direction along with the herringbone connecting rod mechanism under the action of the feeding and discharging air cylinder, and the yarn tube gripping device approaches or leaves the yarn tube through the lifting and swinging of the doffing air frame, so that the grabbing of the yarn tube is realized. The yarn holding device can store and grasp the empty tubes and the doffing tubes by circularly moving the bobbin tray below the integrated doffing device or the fixed tray on the steel belt, and the movement rule of the mechanism requires that the spinning position of the bobbins and the storing and taking position of the tray at the lower part are on a vertical straight line.
Due to the structure and space limitation of the spinning frame, the circulating movement direction of the tray below the colony must be parallel to the air frame and perpendicular to the wallboard of the spinning frame. For the spinning frame designed in the past, in order to pursue the stability of the machine, the supporting leg below the wallboard is often designed to be relatively wide, which cannot meet the requirement that the running track of the tray below the doffing of the colony is arranged to enable the spinning position and the access position of the yarn tube to be on a vertical line. The method for solving the problem comprises the steps of firstly, changing the wallboard of the spinning frame to adapt to the doffing reformation of the colony, wherein the method has the defects of complex structure, large reformation workload, waste caused by scrapping of the replaced wallboard, and no compliance with the national energy conservation and emission reduction requirements; secondly, a new mechanism is designed to ensure that the center (access position) of the tray on the circular motion track of the bobbin tray below the colony is not in a vertical straight line with the spinning position above the tray.
Patent 1 (application number: CN 201610198208.8) discloses a translational yarn gripper assembly device, which can satisfy the second technical scheme, and has the defects of complex structure and poor reliability, and particularly, too many sliding rail pairs 28 protrude to the outside of the machine, so that the passing of operators and vehicles for transporting roving bobbins is affected, and the unexpected damage caused by inconvenient field operation is more. Patent 2 (application number: CN 202021356800.4) discloses a novel movable yarn gripper for doffing of a colony, which can also meet the second technical scheme, and has the defects that each spindle uses a movable tailstock, a cylinder seat, two spindles, a shell, a housing and other plastic parts, and the cost is too high, users cannot bear the same, and too many moving parts are added, a movement gap exists between the shell and the tailstock, so that the reliability is deteriorated, and the used force during bobbin inserting and pulling is finally loaded on the plastic shell, so that the damage is easily caused.
Disclosure of Invention
In order to overcome the technical defects, the invention provides a doffing device of a spinning frame, which aims to solve the problems related to the background technology.
The invention provides a doffing device of a spinning frame, comprising:
the lifting herringbone arms are arranged on one side of the spinning frame or respectively arranged on two sides of the spinning frame;
the transverse movement mechanisms are correspondingly arranged at the top ends of the lifting herringbone arms; the transverse movement mechanism comprises a mounting plate, a movable plate and at least one driving source; at least one group of upper connecting rods and lower connecting rods are hinged between the mounting plate and the movable plate, and the upper connecting rods, the lower connecting rods, the mounting plate and the movable plate form a movable parallelogram mechanism; one end of the driving source is hinged to the bottom of the mounting plate, and the other end of the driving source is arranged on the upper connecting rod, the lower connecting rod or the movable plate, so that the parallelogram mechanism expands or contracts to drive the movable plate to transversely move along the mounting plate;
the actuating mechanism comprises a doffing air frame fixedly arranged on one side, far away from the mounting plate, of the movable plate, and a plurality of yarn grippers which are uniformly arranged on the other side of the doffing air frame and are suitable for grabbing a yarn tube.
Preferably or alternatively, the drive source comprises a first drive cylinder; the tail part of the cylinder body of the first driving cylinder is hinged to the bottom of the mounting plate, and the head part of the piston rod of the first driving cylinder is provided with a rod end bearing which is hinged to the upper connecting rod or the lower connecting rod.
Preferably or alternatively, the drive source comprises a toggle mechanism;
the toggle mechanism includes: the large arm connecting rod, the small arm connecting rod and the second driving cylinder; the two ends of the big arm connecting rod and the small arm connecting rod which are mutually hinged are respectively hinged to the mounting plate and the movable plate to form a toggle mechanism, a second driving cylinder is hinged to the big arm connecting rod or the small arm connecting rod of the toggle mechanism, and the tail end of the cylinder body of the second driving cylinder is hinged to the mounting plate.
Preferably or alternatively, the centre line of the toggle mechanism when extended to form a toggle forms an included angle of 50-70 degrees with the hinge axis at the two ends of the upper link or the lower link when the parallelogram mechanism is extended;
preferably or optionally, the included angle between the axis of the second driving cylinder and the central line of the elbow when the elbow is formed is 15-30 degrees;
the rod end bearing of the piston rod head of the first driving cylinder is hinged to the middle part of the upper connecting rod of the parallelogram mechanism, and the included angle between the axis of the rod end bearing and the upper connecting rod in a horizontal state is 45-65 degrees.
Preferably or alternatively, the centre line of the toggle mechanism when extended to form a toggle forms an angle of 63 ° with the hinge axis of the upper or lower links when the parallelogram mechanism is extended;
preferably or alternatively, the second drive cylinder axis forms an angle of 20 ° with the centre line of the wrist when the wrist is formed;
the rod end bearing of the piston rod head of the first driving cylinder is hinged to the middle of the upper connecting rod of the parallelogram mechanism, and an included angle between the rod end bearing and the upper connecting rod in a horizontal state is 53 degrees.
Preferably or alternatively, a first position sensor is mounted in the middle of the mounting plate; a second position sensor is arranged at the lower part of the mounting plate;
a baffle is fixedly arranged on a connecting rod at one side of the parallelogram mechanism, and can completely or partially shield the first position sensor when the parallelogram mechanism is unfolded by the toggle of the connecting rod;
two groups of anti-collision screws are arranged on one side, close to the mounting plate, of the movable plate; a set of anti-collision screws may be aligned with or against the second position sensor when the toggle mechanism is in a collapsed, parallelogram-shaped retracted state; the other set of anti-collision screws are aligned with or against the set screws on the mounting plate when the toggle mechanism is in the collapsed, parallelogram retracted condition.
Preferably or optionally, the forearm link is of arcuate configuration.
Preferably or alternatively, the yarn gripper comprises:
the body part is fixed on the doffing air frame in a detachable mounting mode;
the through hole is arranged on the body and is matched with one end of the bobbin;
the piston column is arranged on the body part perpendicular to the through hole, and one end of the piston column faces the inside of the through hole; one end of the bobbin is suitable for locking or releasing;
the air cavity is positioned in the body part, is arranged at the other end of the piston column and is suitable for driving the piston column to move to one side of the through hole;
and the reset spring is sleeved outside the piston column, and two ends of the reset spring are respectively connected with the other end of the piston column and the body part of the piston column and are suitable for driving the piston column to reset.
Preferably or alternatively, the air cavity is in communication with an air source through an air path provided inside the doffing air frame.
The invention relates to a doffing device of a spinning frame, which has the following beneficial effects compared with the prior art:
1. the invention adopts the mode of mutual coupling of the toggle mechanism and the parallelogram link mechanism, and has the characteristics of simple and compact structure, reliable movement, lower upgrading and reconstruction cost of collective doffing, and the like.
2. The invention adopts the mode that the toggle mechanism driven by the double cylinders and the parallelogram link mechanism are mutually coupled, not only can reduce the volume of the whole doffing device, but also can bear the force required by the yarn grasping device when pulling out the yarn tube, and especially can bear the larger tube pulling force required by the unexpected occurrence of the yarn tube pulling.
3. The invention solves the problem that the bobbin spinning position of the spinning machine and the transportation position of the bobbin tray after doffing are not on the same vertical line, and has the characteristics of accurate movement position, reliable operation and easy control.
Drawings
Fig. 1 is a schematic diagram of the front structure of the invention when inserting and pulling out a bobbin in the upper bobbin spinning position.
Fig. 2 is a schematic diagram of the front structure of the bobbin inserting and pulling device of the present invention at the lower Fang Shaguan tray position.
Fig. 3 is a schematic diagram showing the state of expanding and lifting the herringbone arm by the transverse movement mechanism according to the present invention (the driving source in the second mode is adopted).
Fig. 4 is a schematic view showing an axis of a state in which the traversing mechanism of the present invention is retracted and the lifting/lowering lambdoidal arm is lowered (using the driving source in the third mode).
Fig. 5 is a schematic cross-sectional view of a first embodiment of the drive source of the present invention.
Fig. 6 is a schematic cross-sectional view of a second embodiment of the driving source of the present invention.
Fig. 7 is a schematic cross-sectional view of a third embodiment of the drive source according to the present invention.
Fig. 8 is an enlarged view of a portion of the yarn gripper of the present invention.
The reference numerals are: lifting the chevron arm 100;
the device comprises a transverse movement mechanism 200, a mounting plate 210, a connecting seat 211, a movable plate 220, a driving source 230, a first driving cylinder 231, a small arm connecting rod 232a, a large arm connecting rod 232b, a second driving cylinder 232c, an upper connecting rod 240, a lower connecting rod 250, a first position sensor 260, a second position sensor 270, a baffle 280 and an anti-collision screw 290;
doffing air frame 310, yarn gripper 320, body 321, through hole 322, piston column 323, air cavity 324, return spring 325;
bobbin 400.
Description of the embodiments
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.
Referring to fig. 1 to 8, a doffing device of a spinning frame includes: a lifting and lowering herringbone arm 100, a traversing mechanism, a doffing air frame 310 and a plurality of grippers 320.
Referring to fig. 1 to 4, a plurality of lifting herringbone arms 100 are disposed at one side of the spinning frame, or disposed at two sides of the spinning frame respectively, and drag the doffing device to move through the spinning frame colony herringbone arms, and the movement of the lifting herringbone arms 100 can be divided into: the Y-shaped arm is lifted to a high position by moving up and down at the spinning position of the bobbin 400, so as to realize tube drawing or tube insertion; the Y-shaped arm descends to the low position to realize tube drawing or tube insertion by the up-and-down movement of the tray position of the bobbin 400 at the lower part of the spinning frame. Due to the structure and space limitation of the spinning frame, the lifting herringbone arm 100 is adopted, so that the volume of the whole doffing device is reduced, and the triangular structure of the doffing device has higher stability. Of course, it will be apparent to those skilled in the art that the lifting mechanism may be of other types of structures, and is not specifically illustrated herein.
Each lateral movement mechanism 200 is correspondingly mounted on the top end of each lifting herringbone arm 100, wherein the lateral movement mechanism 200 comprises: a mounting plate 210, a movable plate 220, and at least one driving source 230; at least one group of upper connecting rod 240 and lower connecting rod 250 are hinged between the mounting plate 210 and the movable plate 220, and the upper connecting rod 240, the lower connecting rod 250, the mounting plate 210 and the movable plate 220 form a movable parallelogram mechanism; one end of the driving source 230 is hinged to the bottom of the mounting plate 210, and the other end is mounted on the upper link 240, the lower link 250, or the movable plate 220, so that the parallelogram mechanism expands or contracts, driving the movable plate 220 to move laterally along the mounting plate 210.
In other words, the driving source 230 has a plurality of combinations, and several combinations are briefly described with reference to fig. 3 to 6.
In one aspect, the driving source 230 includes a first driving cylinder 231; the first driving cylinder 231 is hinged to the bottom of the mounting plate 210, and a rod end bearing is mounted on the head of a piston rod of the first driving cylinder 231 and hinged to the upper connecting rod 240 or the lower connecting rod 250.
In a second mode, the driving source 230 includes a toggle mechanism; the toggle mechanism includes: a large arm link 232b, a small arm link 232a, and a second driving cylinder 232c; the two ends of the articulated arm link 232b and the articulated arm link 232a are respectively articulated to the mounting plate 210 and the movable plate 220 to form a toggle mechanism, and a second driving cylinder 232c is articulated on the arm link 232b or the arm link 232a of the toggle mechanism, and the tail end of the cylinder body of the second driving cylinder 232c is articulated on the mounting plate 210. When the toggle mechanism starts to be released and folded during the return of the second driving cylinder 232c, the parallelogram mechanism starts to be folded and contracted to a certain size, completing the lateral movement. The arm link 232a is arcuate to avoid interference with the fly leaf 220 when the first toggle joint is in motion.
In a third mode, the driving source 230 includes a first cylinder and a toggle mechanism, and when the lifting/lowering herringbone arm 100 and the yarn gripper 320 cooperate, the bobbin 400 needs to bear a relatively large force when being pulled out from the spindle, especially when the bobbin 400 is pulled out accidentally. In the third preferred embodiment, the two driving cylinders are arranged to enable the entire transverse movement mechanism 200 to operate smoothly, and because the force required to drive the entire transverse movement mechanism 200 by only one cylinder is large through calculation and test, the cylinder diameter of a single driving cylinder is large, which results in the huge transverse movement mechanism 200, so that the coupling driving of the two driving cylinders is adopted to enable the entire mechanism to be compact and small.
The included angle formed by the central line of the toggle mechanism when the toggle mechanism is stretched and the hinge axes at the two ends of the upper connecting rod or the lower connecting rod when the parallelogram mechanism is stretched is 50-70 degrees; in this example, the included angle is 63 °; the included angle ensures the compactness of the mechanism and leads the two mechanisms to form a space triangle together, thereby having strong stability of pulling out and inserting the bobbin.
The included angle between the axis of the second driving cylinder 232c and the central line of the elbow when the elbow is formed is 15-30 degrees; the rod end bearing of the piston rod head of the first driving cylinder 231 is hinged to the middle part of the upper connecting rod 240 of the parallelogram mechanism, and the included angle between the rod end bearing and the upper connecting rod 240 in a horizontal state is 45-65 degrees. When the included angle is too large, the transverse movement mechanism 200 is huge, the passing of operators is influenced, and the damage caused by inconvenient field operation is more and is not consistent with the design of the application; in this example, the second drive cylinder 232c axis is at an angle of 20 ° to the center line of the wrist when the wrist is formed; the rod end bearing of the piston rod head of the first driving cylinder 231 is hinged to the middle part of the upper connecting rod 240 of the parallelogram mechanism, and forms an included angle of 53 degrees with the upper connecting rod 240 in a horizontal state. Thus, the two cylinders and the respective connecting rods respectively form a triangle mechanism, so that the size of the whole transverse movement mechanism 200 is reduced while the stability of the transverse movement mechanism in the vertical direction is ensured to be large.
The tail parts of the first driving cylinder 231 and the second driving cylinder 232c are hinged through a connecting seat 211 fixedly connected to the mounting plate 210, and share the same air source and pressure valve, so that the consistency of the movement periods of the two is ensured. In addition, the air paths at the middle parts of the first driving cylinder 231 and the second driving cylinder 232c penetrate through the bottom of the mounting plate 210 and are connected with the pressure valve, so that the air paths with enough length can be formed to provide a large enough movement angle for the first driving cylinder 231 and the second driving cylinder 43, and the air paths are prevented from intertwining.
In a further embodiment, a first position sensor 260 is mounted in the middle of the mounting plate 210; a second position sensor 270 is installed at the lower portion of the mounting plate 210 to detect two states in which the movable plate 220 is located.
Wherein, a baffle 280 is fixedly arranged on one side connecting rod of the parallelogram mechanism, and the baffle 280 can completely or partially shield the first position sensor 260 when the connecting rod toggle is formed and the parallelogram mechanism is unfolded. By the cooperation of the first position sensor 260 and the blocking piece 280, when the first toggle connecting rod is unfolded, the joint points of the two connecting rods finally form a straight line to extend the toggle, and the parallelogram mechanism is unfolded simultaneously to form a rectangular or square mechanism; the flap 80 just completely blocks the first position sensor 260.
Two groups of anti-collision screws 290 are arranged on one side of the movable plate 220, which is close to the mounting plate 210; a set of bump screws 290 may be aligned with or against the second position sensor 270 when the toggle mechanism is in the collapsed, parallelogram-shaped retracted state; the other set of bump screws 290 is aligned with or against the set screws provided on the mounting plate 210 when the toggle mechanism is in the collapsed, parallelogram retracted condition. When the toggle mechanism starts to unfold and fold during the return of the cylinder, the parallelogram mechanism also starts to fold and retract to a certain size at the same time, and the anti-collision screw 290 blocks the second position sensor 270 or abuts against the second position sensor 270. In addition, the adjusting screw is used for adjusting the transverse accurate position of the pipe grabbing device air frame.
It should be noted that the two sensors may be provided in a group on one side of the spinning frame, and it is not necessary to provide a sensor on the lateral movement mechanism mounted on each of the chevron arms.
The actuator comprises a doffing air frame 310 fixedly arranged on one side of the movable plate far away from the mounting plate, and a plurality of yarn grippers 320 which are uniformly arranged on the other side of the doffing air frame and are suitable for gripping bobbins. Wherein the doffing air frame 310 is made of an aluminum profile with compressed air inside.
Referring to fig. 7, the yarn gripper 320 includes: a body portion 321, a through hole 322, a piston post 323, an air chamber 324, and a return spring 325. The body 321 is fixed on the doffing air frame 310 in a detachable installation mode; the through hole 322 is arranged on the body and is matched with one end of the bobbin 400; the piston column 323 is arranged on the body portion 321 perpendicular to the through hole 322, and one end of the piston column faces the inside of the through hole 322; adapted to lock or release one end of the bobbin 400; the air cavity 324 is located in the body 321, is arranged at the other end of the piston column 323, is communicated with an air source through an air channel arranged in the doffing air frame 310, and is suitable for driving the piston column 323 to move towards one side of the through hole 322; the return spring 325 is sleeved outside the piston rod 323, and two ends of the return spring are respectively connected with the other end of the piston rod 323 and the body 321, and is suitable for driving the piston rod 323 to return. When in use, the through hole 322 is sleeved at one end of the bobbin 400, then the air cavity 324 is inflated, so that the piston rod moves towards one side of the through hole 322 and is propped against the bobbin 400, locking of the bobbin 400 is realized, and then the bobbin 400 is pulled out under the cooperation of the lifting mechanism.
In order to facilitate understanding of the technical scheme of the doffing device, a brief description is made of the working principle of the doffing device: when the yarn gripper 320 is positioned at the yarn spinning position of the yarn tube 400 in use, the through hole 322 is sleeved at one end of the yarn tube 400, then the air cavity 324 is inflated to enable the piston rod to move towards one side of the through hole 322 and to be propped against the yarn tube 400, so that the yarn tube 400 is locked, then the yarn tube 400 is pulled out under the cooperation of the lifting herringbone arm 100, in the process, the second driving air cylinder 232c is in an unfolding state, the toggle mechanism is in a toggle state, and the parallelogram mechanism is in an unfolding state; and starts to descend after the lifting lambdoidal arm 100 rises to a certain height, meanwhile, the toggle mechanism starts to be released and folded in the recovery process of the second driving cylinder 232c, and the first cylinder also cooperates to enable the parallelogram mechanism to start to be folded and contracted to a certain size, avoids the design of a wider supporting leg in the spinning frame and completes transverse movement, and the yarn gripper 320 is just located on the tray position of the lower bobbin 400 of the spinning frame. When the cross section of the spinning machine (i.e. the head of the spinning machine is seen to the tail of the car), the lifting herringbone arms 100 are outwards opened under the action of the outward swinging air cylinder, the colony herringbone arms and the air frame at two sides move up and down in the inverted splayed state, the state of the device is started to be converted,
similarly, when the empty bobbin 400 is transferred to the bobbin 400 spinning position, the lifting and lowering chevron arm 100 is raised and the toggle mechanism forms a toggle while the parallelogram mechanism expands, completing one cycle of lateral movement.
In the practical application process, when the center distance of spinning spindles on the left side and the right side of the spinning frame is 680mm, the left and right center distances of a transportation track (namely a bobbin 400 tray position) for placing the bobbin 400 after doffing are 680mm+ (2 x 65 mm) =810 mm, and the doffing device can avoid the problem that part of machine type wallboard legs are too wide when the colony of the spinning frame is reformed, and the wallboard of the spinning frame does not need to be replaced, so that the cost of colony reformation of the spinning frame is reduced.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
Claims (9)
1. The doffing device of the spinning frame is characterized in that: comprising the following steps:
the plurality of colony doffing lifting herringbone arms are arranged on one side of the spinning frame or respectively arranged on two sides of the spinning frame;
the transverse movement mechanisms are correspondingly arranged at the top ends of the lifting herringbone arms; the transverse movement mechanism comprises a mounting plate, a movable plate, a plurality of connecting rods hinged between the mounting plate and the movable plate and at least one driving source; the articulated connecting rod between the mounting plate and the movable plate is provided with at least one group of upper connecting rod and lower connecting rod, and the upper connecting rod, the lower connecting rod, the mounting plate and the movable plate form a movable parallelogram mechanism; one end of the driving source is hinged to the bottom of the mounting plate, and the other end of the driving source is arranged on the upper connecting rod, the lower connecting rod or the movable plate, so that the parallelogram mechanism can be expanded or contracted to drive the movable plate to transversely move along the mounting plate;
the actuating mechanism comprises a doffing air frame fixedly arranged on one side of the movable plate far away from the mounting plate and a plurality of yarn grippers which are uniformly arranged on the other side of the doffing air frame and are suitable for grabbing a yarn tube;
the drive source includes a toggle mechanism; the toggle mechanism includes: the large arm connecting rod, the small arm connecting rod and the second driving cylinder; the two ends of the big arm connecting rod and the small arm connecting rod which are mutually hinged are respectively hinged to the mounting plate and the movable plate to form a toggle mechanism, a second driving cylinder is hinged to the big arm connecting rod or the small arm connecting rod of the toggle mechanism, and the tail end of the cylinder body of the second driving cylinder is hinged to the mounting plate.
2. The doffing device of claim 1, wherein the drive source further comprises a first drive cylinder; the tail part of the cylinder body of the first driving cylinder is hinged to the bottom of the mounting plate, and a rod end bearing is mounted on the head part of a piston rod of the first driving cylinder and hinged to the upper connecting rod or the lower connecting rod.
3. The doffing device of spinning frame according to claim 2, wherein,
the included angle formed by the central line of the toggle mechanism when the toggle mechanism is stretched and the hinge axes at the two ends of the upper connecting rod or the lower connecting rod when the parallelogram mechanism is stretched is 50-70 degrees;
the included angle between the axis of the second driving air cylinder and the central line of the toggle when the toggle is formed is 15-30 degrees;
the rod end bearing of the piston rod head of the first driving cylinder is hinged to the middle part of the upper connecting rod of the parallelogram mechanism, and the included angle between the axis of the rod end bearing and the upper connecting rod in a horizontal state is 45-65 degrees.
4. A doffing device of a spinning frame according to claim 3, wherein,
the included angle formed by the central line of the toggle mechanism when the toggle mechanism stretches to form a toggle and the hinge axes at the two ends of the upper connecting rod or the lower connecting rod when the parallelogram mechanism stretches is 63 degrees;
the included angle between the axis of the second driving cylinder and the central line of the elbow joint when the elbow joint is formed is 20 degrees;
the rod end bearing of the piston rod head of the first driving cylinder is hinged to the middle of the upper connecting rod of the parallelogram mechanism, and an included angle between the rod end bearing and the upper connecting rod in a horizontal state is 53 degrees.
5. The doffing device of spinning frame of claim 1, wherein a first position sensor is mounted in a middle portion of the mounting plate; the lower part of the mounting plate is provided with a second position sensor.
6. The doffing device of claim 5, wherein a baffle is fixedly mounted on a link on one side of the parallelogram mechanism, and the baffle can completely or partially shield the first position sensor when the link toggle is formed and the parallelogram mechanism is unfolded;
two groups of anti-collision screws are arranged on one side, close to the mounting plate, of the movable plate; a set of anti-collision screws may be aligned with or against the second position sensor when the toggle mechanism is in a collapsed, parallelogram-shaped retracted state; the other set of anti-collision screws are aligned with or against the set screws on the mounting plate when the toggle mechanism is in the collapsed, parallelogram retracted condition.
7. The doffing device of claim 1, wherein the arm link is of arcuate configuration.
8. The doffing device of claim 1, wherein the gripper comprises:
the body part is fixed on the doffing air frame in a detachable mounting mode;
the through hole is arranged on the body and is matched with one end of the bobbin;
the piston column is arranged on the body part perpendicular to the through hole, and one end of the piston column faces the inside of the through hole; one end of the bobbin is suitable for locking or releasing;
the air cavity is positioned in the body part, is arranged at the other end of the piston column and is suitable for driving the piston column to move to one side of the through hole;
and the reset spring is sleeved outside the piston column, and two ends of the reset spring are respectively connected with the other end of the piston column and the body part of the piston column and are suitable for driving the piston column to reset.
9. The doffing device of claim 8, wherein the air chamber is in communication with an air source through an air passage disposed within the doffing air frame.
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| CN114775119A (en) | 2022-07-22 |
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