Servo drive heavy wide sisal hemp loom shedding device

Abstract

The invention relates to the field of textile machinery equipment, in particular to a servo drive heavy wide sisal hemp loom shedding device which comprises n heald frames arranged at intervals in the front-back direction and a motion control card, n is equal to 4-12, the front-back interval from the first heald frame to the nth heald frame to a cloth fell is gradually increased, the ith heald frame is connected with an ith servo motor and an ith transmission mechanism, and the ith transmission mechanism is connected with an ith servo motor. The output end of the i servo motor drives the i heald frame to move up and down through the i transmission mechanism, i = 1, 2,..., n, the motion control card simultaneously controls the rotation angles of the n servo motors, the rotation angles of the first servo motor to the n servo motor are gradually increased, the motion durations of the first servo motor to the n servo motor are equal, the stop durations of the first servo motor to the n servo motor are equal, and the motion durations are shorter than the stop durations. Each servo motor is controlled to rotate by different angles through the motion control card, so that the opening height of each heald frame is small and large, the installation and the maintenance are convenient, and the industrial application is facilitated.

Description

Technical Field

[0001] The invention relates to the field of textile machinery and equipment, in particular to a servo-driven heavy-duty wide-width sisal loom opening device. Background Art

[0002] In the field of heavy-duty wide-width sisal loom opening, the sisal warp tension is large. In order to ensure the mechanical properties and service life of the parts, the thickness of the loom heald frame and the rod is relatively large. In order to prevent the heald frames of each page from interfering with each other when doing lifting and lowering movements, a certain distance must be left between each other, so the distance from each heald frame to the cloth fell is also different. Ideally, the opening height of the heald frame close to the cloth fell is small, and the opening height of the heald frame far from the cloth fell is large, that is, the opening height of the heald frame is small near and large far, which is conducive to forming a larger effective space in front of the cloth fell, so as to smoothly insert the weft and reduce the warp fault phenomenon. However, when there are many heald frames, it is difficult to control the opening height of each heald frame to achieve small near and large far. The existing technology generally controls the opening height of each heald frame to be consistent, which is extremely unfavorable for weft insertion and is prone to cause warp breakage, flower skipping, shuttle rolling and flying shuttle and other weaving defects or faults.

[0003] Sisal yarn is thick, has low elasticity, and has high opening tension. The opening device of a traditional heavy-duty wide-width sisal loom is generally a cam and connecting rod opening device. When the cam and connecting rod opening structure is applied to a loom with large warp tension such as sisal, the wear is aggravated, the mechanism is more easily damaged, and the mechanical maintenance is frequent. In addition, the motion law of the cam and connecting rod opening device is determined by the cam profile. Once the cam profile is determined, the motion law of the heald frame cannot be changed. A cam profile can only produce one type of sisal product. When changing the fabric variety, the cam needs to be replaced, resulting in the cam and connecting rod opening device being unable to adapt to the production requirements of multiple varieties. For example, CN2903114Y discloses a heald lifting connecting rod mechanism, which drives a short connecting rod and a heald lifting piece connected to the connecting rod through a cam and a cam swing arm, and then drives the heald frame to move up and down. This mechanism makes the heald frame not easy to deform and the up and down movement is more stable. However, since it is controlled by a cam, the cam shape and the transmission mechanism are fixed, the heald lifting law is fixed, and it is not easy to change the opening law. Therefore, the prior art uses multiple servo motors to drive the movement and stillness of the connecting rod of the opening device respectively, and can independently control the lifting and lowering of each page of the heald frame, forming different fabric tissue cycles, and meeting the production needs of multiple varieties. For example, CN109881326A discloses an electronic opening device for a loom, which controls the reciprocating motion of the adjusting blade, the eccentric shaft assembly and the diagonal connecting rod respectively through multiple independent servo motors and reducers, and uses two vertical connecting rods to drive the heald frame to rise or fall to complete the opening movement of the loom. However, the mechanical structure of this type of opening device is still complicated. During design, installation, debugging, and maintenance, it is necessary to control the initial positions of multiple heald frames to be consistent through parts such as adjusting blades, adjusting arms, and diagonal connecting rods. When the heald frames rise or fall, they need to be symmetrical relative to the initial position, which is complicated and cumbersome, large in size, and occupies a large area.

[0004] In view of the shortcomings of the technical solution of CN109881326A, such as complex structure, large volume and large floor space, the prior art has been studied. For example, CN217809871U discloses an opening device, which includes a heald frame, each heald frame is connected to a driving motor and a transmission mechanism, and the output end of the driving motor drives the heald frame to move up and down through the transmission mechanism. The driving motor and the transmission mechanism are arranged above the heald frame, and the driving motor is divided into 2 to 4 groups. The heald frames driven by each group of driving motors are arranged at equal intervals. Each group of driving motors has a driving motor stator shaft, which is arranged perpendicular to the plane of the heald frame and fixedly installed on the frame. The stator shafts of the driving motors are distributed and installed so that the driving motors of each group do not interfere with each other. The transmission mechanism adopts a connecting rod structure to form two output ends that move up and down synchronously, and the two output ends are symmetrically connected to the upper part of the same heald frame. Although the technical solution disclosed in CN217809871U directly sets the rotor body into an eccentric structure, which simplifies the output structure to a certain extent, and installs the drive motor above the heald frame to reduce the floor space, each motor on each stator shaft in this technical solution occupies a space of 5.32 cm, making it difficult to install high-power, large-volume servo motors and reducers, and cannot be applied to the opening device of heavy-duty wide-width sisal looms.

[0005] In addition, the prior art, such as the loom electronic opening device disclosed in CN109881326A and the opening mechanism disclosed in CN217809871U, has only two lifting points. When lifting a long and wide heald frame, the load distribution is uneven, and the torque in the middle of the heald frame is the largest. After long-term continuous movement, the middle part of the heald frame is prone to fatigue fracture, and the opening height is small.

[0006] In summary, the problems existing in the prior art are: ① It is difficult to achieve a small opening height for the heald frame near and a large opening height far away; ② The high-power servo motor is large in size, and it is difficult to be applied to the opening device of a heavy-duty wide-width sisal loom without affecting the movement of the loom and the operation of the workers; ③ The uneven distribution of the heald lifting points makes the load and force of the heald frame uneven, affecting the opening height and service life of the heald frame; ④ The prior art is mostly used to weave fine and elastic cotton, silk and other products, and cannot weave sisal and jute products with high tension, low elasticity and wide width; ⑤ Although a servo motor is used to drive, the optimal movement law of the heald frame is not achieved. The acceleration and deceleration of the heald frame are constant during movement, and the heald frame moves quickly and stops suddenly, causing large vibration of the opening device and an increase in the yarn breakage rate; ⑥ The general opening device cannot be installed on looms of different models, has poor adaptability, complex debugging, and no dynamic interaction with other equipment; ⑦ In addition to the opening motion control, the control system has a single function and cannot adapt to the era of Industry 4.0.

[0007] Therefore, it is necessary to develop a new heavy-duty wide sisal loom opening device to solve some or all of the above problems. Summary of the invention

[0008] The purpose of the present invention is to solve the above problems existing in the prior art and to provide a servo-driven heavy-duty wide-width sisal loom opening device.

[0009] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0010] A servo-driven heavy-duty wide-width sisal loom opening device comprises n heald frames arranged at intervals along the front-to-back direction, n=4-12, the front-to-back intervals between the 1st to nth heald frames and the cloth fell gradually increase, the ith heald frame is respectively connected to the ith servo motor and the ith transmission mechanism, the output end of the ith servo motor drives the ith heald frame to move up and down via the ith transmission mechanism, i=1,2,...,n, the n servo motors are the same, the n transmission mechanisms are the same, and the invention also comprises a motion control card, the motion control card simultaneously controls the rotation angle, movement duration and stop duration of the n servo motors, the rotation angle of the 1st to nth servo motors gradually increases, the movement duration of the 1st to nth servo motors is equal, the stop duration of the 1st to nth servo motors is equal, the movement duration is shorter than the stop duration, the loom opening can be quickly opened, the weft insertion and weft beating time can be extended, and the fault tolerance is improved.

[0011] The essence of the present invention is to control the independent movement of each heald frame. The independent movement of the servo motor controls the movement of the corresponding connected heald frame through a transmission mechanism (one servo motor controls one heald frame). Through a motion control card, a program is written to control each servo motor to rotate at different angles, so that each heald frame forms a different opening height. The rotation angle of the 1st to nth servo motors gradually increases, and the opening height of the 1st to nth heald frames with gradually increasing front and rear spacing to the cloth fell gradually increases. Each servo motor is controlled by a motion control card (master switch) and cooperates with each other, so that the rotation angle of the servo motor corresponding to the heald frame close to the cloth fell is smaller, and the rotation angle of the servo motor corresponding to the heald frame far from the cloth fell is larger.

[0012] The movement duration and stop duration of the servo motor refer to the time required for it to rotate to a certain angle and the time period when it does not rotate, respectively. When the servo motor stops rotating, the heald frame will remain stationary, and the shuttle will shuttle through the cloth fell to complete the actions of weft insertion and weft beating. If the rotation speed of the servo motor is too fast, the movement of the heald frame will become rapid, that is, it will start and stop rapidly, resulting in large acceleration and deceleration, which can easily cause vibration and noise. The present invention can flexibly control the movement duration and stop duration of the servo motor, and on the premise of ensuring the smooth completion of the weft beating and weft insertion tasks, shorten the stop duration as much as possible and extend the movement duration, so as to reduce the generation of vibration and noise, thereby improving the service life of the loom.

[0013] As the preferred technical solution:

[0014] As described above, in a servo-driven heavy-duty wide-width sisal loom opening device, n servo motors are fixed on the same horizontal plane and located at the upper left of n heald frames, and the left and right spacings from the 1st to nth servo motors to the corresponding heald frames first increase and then decrease.

[0015] As described above, in a servo-driven heavy-duty wide-width sisal loom opening device, n is an even number, the heald frames are divided into two groups, which are respectively located on the front and rear sides of a center line X, and the left and right spacings from the 1st to n / 2nd servo motors to the corresponding heald frames gradually increase, and the left and right spacings from the n / 2+1st to nth servo motors to the corresponding heald frames gradually decrease.

[0016] In the servo-driven heavy-duty wide-width sisal loom opening device as described above, the left-right spacing between the n / 2 servo motor and the n / 2+1 servo motor is 0, and the left-right spacings between other two adjacent servo motors are the same.

[0017] In the servo-driven heavy-duty wide-width sisal loom opening device as described above, the i-th transmission mechanism adopts a connecting rod structure to form three output ends that move up and down synchronously, and the three output ends are simultaneously connected to the upper part of the i-th heald frame.

[0018] A servo-driven heavy-duty wide-width sisal loom opening device as described above, each transmission mechanism includes a crank, a first connecting rod, a first middle splint, a first swing arm, a first upper splint, a second connecting rod, a second upper splint, a second swing arm, a third upper splint, a third connecting rod, a fourth upper splint, a third swing arm, a first fixed axis, a second fixed axis, a third fixed axis, a first front limit clamping block, a first rear limit clamping block, a second front limit clamping block, a second rear limit clamping block, a third front limit clamping block, a third rear limit clamping block, a first lower splint, a second lower splint, a third lower splint, a first heald lifting rod, a second heald lifting rod, a third heald lifting rod, a fourth lower splint, a fifth lower splint, and a sixth lower splint;

[0019] The first swing arm, the second swing arm, and the third swing arm are all L-shaped, and consist of a horizontal portion and a vertical portion; the crank, the first swing arm, the second swing arm, the third swing arm, the first lower splint, the second lower splint, the third lower splint, the first heald lifting rod, the second heald lifting rod, the third heald lifting rod, the fourth lower splint, the fifth lower splint, and the sixth lower splint are all arranged vertically; the first connecting rod, the first middle splint, the first upper splint, the second connecting rod, the second upper splint, the third upper splint, the third connecting rod, and the fourth upper splint are all arranged horizontally;

[0020] Each of the clamping plates comprises a front plate and a rear plate, and each clamping plate clamps the connected parts between the front plate and the rear plate;

[0021] During installation, the flange of the servo motor is fixed to the loom frame by bolts, and the rotating shaft of the servo motor is fixedly connected to the lower end of the crank. Specifically, a circular hole is provided at the lower end of the crank, and an interference fit is achieved between the circular hole and the rotating shaft of the servo motor through an expansion sleeve;

[0022] The upper end of the crank is hinged to the left end of the first connecting rod. Specifically, a circular hole is provided at the upper end of the crank, and a circular hole is provided at the left end of the first connecting rod. The two holes are designed to accommodate a stepped shaft together. After the stepped shaft passes through the two holes, a tight and smooth fit between the stepped shaft and the hole is achieved through bearings, bearing caps and countersunk screws. In order to ensure that the stepped shaft remains firmly in the two holes, a plum-shaped gasket and a fastening nut are used to fix it.

[0023] The right end of the first connecting rod is hinged to the left end of the first middle splint. Specifically, a circular hole is provided at the right end of the first connecting rod, and a circular hole is provided at the left end of the front plate and the rear plate of the first middle splint respectively. The three holes are concentric, and a stepped shaft is accommodated in the first connecting rod. The front plate and the rear plate of the first middle splint are clamped on both sides of the stepped shaft, and the bearing is fixed in the first connecting rod by the bearing cover and the countersunk screw to achieve a tight and smooth fit. The countersunk screw is used to clamp and fix the left end of the front plate of the first middle splint, the right end of the first connecting rod, and the left end of the rear plate of the first middle splint to ensure that the stepped shaft remains firmly in the above three holes.

[0024] The right end of the first middle clamping plate is fixedly connected to the middle end of the vertical portion of the first swing arm. Specifically, a circular hole is respectively provided at the right end of the front plate and the rear plate of the first middle clamping plate, and a circular hole is provided at the middle end of the vertical portion of the first swing arm. The spring hollow pins are inserted into the three holes and reinforced by countersunk screws.

[0025] The upper end of the vertical portion of the first swing arm is hinged to the left end of the first upper clamping plate. Specifically, a circular hole is provided at the upper end of the vertical portion of the first swing arm, and a circular hole is provided at the left end of the front plate and the rear plate of the first upper clamping plate respectively. The three holes are concentric and accommodate a stepped shaft in the first swing arm. The front plate and the rear plate of the first upper clamping plate are clamped on both sides of the stepped shaft, and the bearings are fixed in the first swing arm by bearing covers and countersunk screws to achieve a tight and smooth fit. The right end of the front plate of the first upper clamping plate, the left end of the second connecting rod, and the right end of the rear plate of the first upper clamping plate are clamped and fixed by countersunk screws to ensure that the stepped shaft remains firmly in the above three holes;

[0026] The right end of the second upper clamping plate is hinged to the upper end of the vertical portion of the second swing arm, and the specific hinge method is the same as above;

[0027] The height of the second upper end of the vertical portion of the second swing arm is between the upper end of the vertical portion of the second swing arm and the middle end of the vertical portion of the second swing arm, and the second upper end of the vertical portion of the second swing arm is hinged to the left end of the third upper clamping plate, and the specific hinge method is the same as above;

[0028] The right end of the fourth upper clamping plate is hinged to the upper end of the vertical portion of the third swing arm, and the specific hinge method is the same as above;

[0029] The first fixed axis, the second fixed axis, and the third fixed axis are fixed to the loom frame, maintaining the same horizontal plane, and respectively pass through the left end of the horizontal part of the first swing arm, the left end of the horizontal part of the second swing arm, and the left end of the horizontal part of the third swing arm; the first front limiting clamp block and the first rear limiting clamp block are clamped on the first fixed axis by bolts, and respectively contact the front side surface of the first swing arm at the front end and the rear side surface of the first swing arm at the rear end; the second front limiting clamp block and the second rear limiting clamp block are clamped on the second fixed axis by bolts, and respectively contact the front side surface of the second swing arm at the front end and the rear side surface of the second swing arm at the rear end; the third front limiting clamp block and the third rear limiting clamp block are clamped on the third fixed axis by bolts, and respectively contact the front side surface of the third swing arm at the front end and the rear side surface of the third swing arm at the rear end;

[0030] The right end of the horizontal part of the first swing arm, the right end of the horizontal part of the second swing arm, and the right end of the horizontal part of the third swing arm are hinged to the upper end of the first lower splint, the upper end of the second lower splint, and the upper end of the third lower splint, respectively, and the hinge methods of the three are the same. Specifically, a circular hole is provided at the right end of the horizontal part of the first swing arm, and a circular hole is provided at the upper end of the front plate and the rear plate of the first lower splint respectively. The corresponding three holes are concentric, and a stepped shaft is accommodated in the first swing arm. The front plate and the rear plate of the first lower splint are clamped on both sides of the corresponding stepped shaft, and the bearings are fixed in the first swing arm by bearing covers and countersunk screws to achieve a tight and smooth fit, and the countersunk screws are used to clamp and fix the lower end of the front plate of the first lower splint, the upper end of the first lifting rod, and the lower end of the rear plate of the first lower splint, respectively, to ensure that the stepped shaft remains firmly in the corresponding three holes;

[0031] The lower ends of the first heald lifting rod, the second heald lifting rod, and the third heald lifting rod are respectively fixedly connected to the upper ends of the fourth lower splint, the fifth lower splint, and the sixth lower splint by countersunk screws;

[0032] The lower ends of the fourth lower clamping plate, the fifth lower clamping plate and the sixth lower clamping plate are simultaneously hinged to the heald lifting seat of the heald frame through a copper bushing, a pin shaft and a retaining ring of a retaining spring.

[0033] In the servo-driven heavy-duty wide-width sisal loom opening device as described above, the horizontal parts of the first swing arm, the second swing arm and the third swing arm have the same length, and the vertical parts of the first swing arm and the second swing arm have the same length and are greater than the vertical part of the third swing arm.

[0034] As described above, a servo-driven heavy-duty wide-width sisal loom opening device, the horizontal lengths of the first swing arm, the second swing arm and the third swing arm are 350-450 mm, the vertical lengths of the first swing arm and the second swing arm are 600-700 mm, and the vertical length of the third swing arm is 480-580 mm, so that the opening height can reach 250-350 mm, ensuring that the loom opening is clear and convenient for the shuttle to pass through. The length of the swing arm of the prior art is about 200 mm, and the height is about 300 mm, which results in a small opening height (150-200 mm) and the shuttle cannot pass through.

[0035] Beneficial effects:

[0036] (1) The present invention controls each servo motor to rotate at different angles, move for different durations, and stop for different durations through a motion control card, so that the servo motor for the heald frame close to the cloth fell rotates at a smaller angle, while the servo motor for the heald frame far from the cloth fell rotates at a larger angle, thereby controlling the up and down reciprocating motion of each heald frame and the opening height to be smaller near and larger far, thereby meeting the production needs of multi-warp and weft yarn circulation sisal products.

[0037] (2) The present invention fixes multiple servo motors on the same horizontal plane and locates them at the upper left of the corresponding heald frame. The left and right spacing between the servo motor and the corresponding heald frame first increases and then decreases. This optimization of the spatial layout not only facilitates the movement of the loom and the operation of the workers, but also keeps the servo motor away from the heald frame, which is conducive to the application of large-volume servo motors in the opening device of heavy-duty wide-width sisal looms.

[0038] (3) The present invention adopts a connecting rod structure to form three output ends that move up and down synchronously. The distribution of the swing arm and the heddle lifting point is more uniform, so that the load and force of the heddle frame are uniform, which is beneficial to improving the service life and opening height of the heddle frame. The opening height can reach 250-350 mm, ensuring that the loom cloth mouth is clear and convenient for the shuttle to pass through.

[0039] (4) The connection method between the crank, connecting rod, swing arm, heald lifting rod, clamping plate and heald frame of the present invention is simple, easy to install and maintain, and is conducive to industrial application.

[0040] (5) The control system of the present invention is intelligent and can add, delete, and modify fabric weave cycles at will. The fabric weave can be easily replaced and various fabric weave cycles with n-page heald frame arrangements and combinations can be woven.

[0041] (6) The background algorithm of the present invention can automatically analyze the servo motor parameters according to the fabric structure cycle, so as to optimize the movement law of the heald frame and make the heald frame move smoothly, which is beneficial to solve the problems of loom vibration and high yarn breakage rate, reduce the failure rate and improve production efficiency.

[0042] (7) The present invention can be connected to sensors and combined with a control system to dynamically collect loom working data, and accurately coordinate with the weft insertion, weft beating, winding, warp feeding and other devices in a timely manner, so as to adapt to a variety of different types of looms.

[0043] (8) The host computer information of the present invention has a high degree of intelligence, and has functions such as production information prompt, loom status warning, log recording, authority management, industrial network access, etc., meeting the requirements of Industry 4.0 equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural schematic diagram of a servo-driven heavy-duty wide-width sisal loom opening device of the present invention;

[0045] Figure 2 It is a schematic diagram of the assembly of the servo-driven heavy-duty wide-width sisal loom opening device of the present invention;

[0046] Figure 3 It is a structural schematic diagram of the servo-driven heavy-duty wide-width sisal loom shedding device of the present invention when the heald frame moves to the lowest point;

[0047] Figure 4 It is a structural schematic diagram of the servo-driven heavy-duty wide-width sisal loom shedding device of the present invention when the heald frame moves to the highest point;

[0048] Figure 5 It is a front view schematic diagram of the spatial layout of the servo motor and the heald frame of the present invention;

[0049] Figure 6 It is a top view schematic diagram of the spatial layout of the servo motor and the heald frame of the present invention.

[0050] Among them, 1-servo motor (11-first servo motor, 12-second servo motor, 13-third servo motor, 14-fourth servo motor, 15-fifth servo motor, 16-sixth servo motor, 17-seventh servo motor, 18-eighth servo motor), 2-crank, 31-first connecting rod, 32-second connecting rod, 33-third connecting rod, 41-first swing arm, 42-second swing arm, 43-third swing arm, 51-first heald lifting rod, 52-second heald lifting rod, 53-third heald lifting rod, 61-first middle splint, 621-first upper splint , 622-second upper splint, 623-third upper splint, 631-first lower splint, 632-second lower splint, 633-third lower splint, 634-fourth lower splint, 635-fifth lower splint, 636-sixth lower splint, 7-heald frame, 81-first fixed shaft, 82-second fixed shaft, 83-third fixed shaft, 911-first front limit clamp, 912-first rear limit clamp, 921-second front limit clamp, 922-second rear limit clamp, 931-third front limit clamp, 932-third rear limit clamp, 10-transmission mechanism. DETAILED DESCRIPTION

[0051] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0052] A servo-driven heavy-duty wide-width sisal loom opening device, comprising 8 heald frames arranged at intervals in the front-to-back direction, 8 transmission mechanisms, 8 servo motors and a motion control card;

[0053] The front-to-rear spacing between the 1st to 8th heald frames and the cloth fell gradually increases. The i-th heald frame is respectively connected to the i-th servo motor and the i-th transmission mechanism. The output end of the i-th servo motor drives the i-th heald frame to move up and down through the i-th transmission mechanism. i=1, 2, ..., 8, the 8 servo motors are the same, and the 8 transmission mechanisms are the same.

[0054] One motion control card controls the rotation angle, motion duration and stop duration of 8 servo motors at the same time. The rotation angle of the 1st to 8th servo motors gradually increases, the motion duration of the 1st to 8th servo motors is equal, the stop duration of the 1st to 8th servo motors is equal, and the motion duration is shorter than the stop duration.

[0055] like Figure 5-6 As shown, 8 servo motors are fixed on the same horizontal plane, namely the first servo motor 11, the second servo motor 12, the third servo motor 13, the fourth servo motor 14, the fifth servo motor 15, the sixth servo motor 16, the seventh servo motor 17, and the eighth servo motor 18. The 8 servo motors are simultaneously located at the upper left of the 8-page heald frame. The 8-page heald frame is divided into two groups, which are respectively located at the front and rear sides of a center line X. The left-right spacing from the 1st to the 4th servo motor to the corresponding heald frame gradually increases, and the left-right spacing from the 5th to the 8th servo motor to the corresponding heald frame gradually decreases. The left-right spacing between the 4th servo motor and the 5th servo motor is 0;

[0056] like Figure 1-4As shown, the i-th transmission mechanism 10 adopts a connecting rod structure to form three output ends that move up and down synchronously, and the three output ends are simultaneously connected to the upper part of the i-th heald frame 7, and the components of each transmission mechanism are a crank 2, a first connecting rod 31, a first middle clamping plate 61, a first swing arm 41, a first upper clamping plate 621, a second connecting rod 32, a second upper clamping plate 622, a second swing arm 42, a third upper clamping plate 623, a third connecting rod 33, a fourth upper clamping plate 624, a third swing arm 43, a first fixed shaft 81 , the second fixed axis 82, the third fixed axis 83, the first front limit clamp 911, the first rear limit clamp 912, the second front limit clamp 921, the second rear limit clamp 922, the third front limit clamp 931, the third rear limit clamp 932, the first lower clamp 631, the second lower clamp 632, the third lower clamp 633, the first heald lifting rod 51, the second heald lifting rod 52, the third heald lifting rod 53, the fourth lower clamp 634, the fifth lower clamp 635, the sixth lower clamp 636;

[0057] The first swing arm 41, the second swing arm 42, and the third swing arm 43 are all L-shaped, and consist of a horizontal portion and a vertical portion; the crank 2, the first swing arm 41, the second swing arm 42, the third swing arm 43, the first lower splint 631, the second lower splint 632, the third lower splint 633, the first heald lifting rod 51, the second heald lifting rod 52, the third heald lifting rod 53, the fourth lower splint 634, the fifth lower splint 635, and the sixth lower splint 636 are all arranged vertically; the first connecting rod 31, the first middle splint 61, the first upper splint 621, the second connecting rod 32, the second upper splint 622, the third upper splint 623, the third connecting rod 33, and the fourth upper splint 624 are all arranged horizontally; each splint consists of a front plate and a rear plate;

[0058] During installation, the flange of the servo motor 1 is fixed to the loom frame by bolts, and the rotating shaft of the servo motor 1 is fixedly connected to the lower end of the crank 2. A circular hole is provided at the lower end of the crank 2, and an interference fit is achieved between the circular hole and the rotating shaft of the servo motor through an expansion sleeve;

[0059] The upper end of the crank 2 is hinged to the left end of the first connecting rod 31. Specifically, a circular hole is provided at the upper end of the crank 2, and a circular hole is provided at the left end of the first connecting rod 31. The two holes are designed to accommodate a stepped shaft together. After the stepped shaft passes through the two holes, a tight and smooth fit between the stepped shaft and the hole is achieved through bearings, bearing caps and countersunk screws. In order to ensure that the stepped shaft remains firmly in the two holes, a plum-shaped gasket and a fastening nut are used to fix it.

[0060] The right end of the first connecting rod 31 is hinged to the left end of the first middle clamping plate 61. Specifically, a circular hole is provided at the right end of the first connecting rod 31, and a circular hole is provided at the left end of the front plate and the rear plate of the first middle clamping plate 61. The three holes are concentric, and a stepped shaft is accommodated in the first connecting rod 31. The front plate and the rear plate of the first middle clamping plate 61 are clamped on both sides of the stepped shaft. The bearing is fixed in the first connecting rod 31 by the bearing cover and the countersunk screw to achieve a tight and smooth fit. The countersunk screw is used to clamp and fix the left end of the front plate of the first middle clamping plate 61, the right end of the first connecting rod 31, and the left end of the rear plate of the first middle clamping plate 61 to ensure that the stepped shaft remains firmly in the above three holes.

[0061] The right end of the first middle clamping plate 61 is fixedly connected to the middle end of the vertical portion of the first swing arm 41. Specifically, a circular hole is provided at the right end of the front plate and the rear plate of the first middle clamping plate 61, and a circular hole is provided at the middle end of the vertical portion of the first swing arm 41. Spring hollow pins are inserted into these three holes and reinforced by countersunk screws.

[0062] The upper end of the vertical portion of the first swing arm 41 is hinged to the left end of the first upper clamping plate 621. Specifically, a circular hole is provided at the upper end of the vertical portion of the first swing arm 41, and a circular hole is provided at the left end of the front plate and the rear plate of the first upper clamping plate 621. The three holes are concentric and accommodate a stepped shaft in the first swing arm 41. The front plate and the rear plate of the first upper clamping plate 621 are clamped on both sides of the stepped shaft, and the bearings are fixed in the first swing arm 41 by bearing covers and countersunk screws to achieve a tight and smooth fit. The right end of the front plate of the first upper clamping plate 621, the left end of the second connecting rod 32, and the right end of the rear plate of the first upper clamping plate 621 are clamped and fixed by countersunk screws to ensure that the stepped shaft remains firmly in the above three holes.

[0063] The right end of the second upper clamping plate 622 is hinged to the upper end of the vertical portion of the second swing arm 42, and the specific hinge method is the same as above;

[0064] The height of the sub-upper end of the vertical portion of the second swing arm 42 is between the upper end of the vertical portion of the second swing arm 42 and the middle end of the vertical portion of the second swing arm 42. The sub-upper end of the vertical portion of the second swing arm 42 is hinged to the left end of the third upper clamping plate 623. The specific hinge method is the same as above.

[0065] The right end of the fourth upper clamping plate 624 is hinged to the upper end of the vertical portion of the third swing arm 43, and the specific hinge method is the same as above;

[0066] The first fixed shaft 81, the second fixed shaft 82, and the third fixed shaft 83 are fixed to the loom frame, maintaining the same horizontal plane, and respectively pass through the left end of the horizontal part of the first swing arm 41, the left end of the horizontal part of the second swing arm 42, and the left end of the horizontal part of the third swing arm 43; the first front limit clamp 911 and the first rear limit clamp 912 are clamped on the first fixed shaft 81 by bolts, and respectively contact the front side surface of the first swing arm 41 at the front end and the rear side surface of the first swing arm 41 at the rear end; the second front limit clamp 921 and the second rear limit clamp 922 are clamped on the second fixed shaft 82 by bolts, and respectively contact the front side surface of the second swing arm 42 at the front end and the rear side surface of the second swing arm 42 at the rear end; the third front limit clamp 931 and the third rear limit clamp 932 are clamped on the third fixed shaft 83 by bolts, and respectively contact the front side surface of the third swing arm 43 at the front end and the rear side surface of the third swing arm 43 at the rear end;

[0067] The right end of the horizontal part of the first swing arm 41, the right end of the horizontal part of the second swing arm 42, and the right end of the horizontal part of the third swing arm 43 are hinged to the upper end of the first lower clamping plate 631, the upper end of the second lower clamping plate 632, and the upper end of the third lower clamping plate 633 respectively, and the hinge method of the three is the same. Specifically, a circular hole is provided at the right end of the horizontal part of the first swing arm 41, and a circular hole is provided at the upper end of the front plate and the rear plate of the first lower clamping plate 631 respectively. The corresponding three holes are concentric, and a stepped shaft is accommodated in the first swing arm 41. The front plate and the rear plate of the first lower clamping plate 631 are clamped on both sides of the corresponding stepped shaft, and the bearings are fixed in the first swing arm 41 by bearing covers and countersunk screws to achieve a tight and smooth fit, and the lower end of the front plate of the first lower clamping plate 631, the upper end of the first heald rod 51, and the lower end of the rear plate of the first lower clamping plate 631 are clamped and fixed by countersunk screws to ensure that the stepped shaft remains firmly in the corresponding three holes;

[0068] The lower ends of the first heald lifting rod 51, the second heald lifting rod 52, and the third heald lifting rod 53 are respectively fixedly connected to the upper ends of the fourth lower clamping plate 634, the fifth lower clamping plate 635, and the sixth lower clamping plate 636 by countersunk screws;

[0069] The lower ends of the fourth lower clamping plate 634, the fifth lower clamping plate 635 and the sixth lower clamping plate 636 are simultaneously hinged to the heald lifting seat of the heald frame 7 through copper bushings, pins and retaining rings;

[0070] The horizontal portions of the first swing arm 41 , the second swing arm 42 , and the third swing arm 43 have the same length, and the vertical portions of the first swing arm 41 and the second swing arm 42 have the same length and are greater than the vertical portion of the third swing arm 43 ;

[0071] The lengths of the horizontal parts of the first swing arm 41, the second swing arm 42 and the third swing arm 43 are 350-450 mm, the lengths of the vertical parts of the first swing arm 41 and the second swing arm 42 are 600-700 mm, and the length of the vertical part of the third swing arm 43 is 480-580 mm, which can make the opening height of the heald frame 7 reach 250-350 mm, ensuring that the loom cloth mouth is clear and convenient for the shuttle to pass through.

Claims

1. A servo-driven heavy-duty wide-width sisal loom opening device, comprising n heald frames arranged at intervals in the front-to-back direction, n=4-12, the front-to-back intervals between the first to nth heald frames and the cloth fell gradually increase, and the i-th heald frame is respectively connected to the i-th servo motor and the i-th servo motor. i transmission mechanism, the output end of the i th servo motor drives the i th heald frame to move up and down through the i th transmission mechanism, i=1,2,…,n, n servo motors are the same, n transmission mechanisms are the same, and the characteristic is that, It also includes a motion control card, which simultaneously controls the rotation angle, movement duration and stop duration of n servo motors. The rotation angle of the first to n servo motors gradually increases, the movement duration of the first to n servo motors is equal, the stop duration of the first to n servo motors is equal, and the movement duration is shorter than the stop duration.

2. A servo-driven heavy-duty wide-width sisal loom opening device according to claim 1, characterized in that: The n servo motors are fixed on the same horizontal plane and are located at the upper left of the n-page heald frames. The left-right spacings from the first to the nth servo motors to the corresponding heald frames first increase and then decrease.

3. A servo-driven heavy-duty wide-width sisal loom opening device according to claim 2, characterized in that: n is an even number, and the heald frames are divided into two groups, which are located on the front and rear sides of a center line X respectively. The left and right spacings from the 1st to n / 2nd servo motors to the corresponding heald frames gradually increase, and the left and right spacings from the n / 2+1st to nth servo motors to the corresponding heald frames gradually decrease.

4. A servo-driven heavy-duty wide-width sisal loom opening device according to claim 3, characterized in that: The left-right spacing between the n / 2th servo motor and the n / 2+1th servo motor is 0, and the left-right spacings between other two adjacent servo motors are the same.

5. The servo-driven heavy-duty wide-width sisal loom opening device according to claim 2, characterized in that: The i-th transmission mechanism adopts a connecting rod structure to form three output ends that move up and down synchronously, and the three output ends are simultaneously connected to the upper part of the i-th heald frame.

6. A servo-driven heavy-duty wide-width sisal loom opening device according to claim 5, characterized in that: Each transmission mechanism comprises a crank (2), a first connecting rod (31), a first middle clamping plate (61), a first swing arm (41), a first upper clamping plate (621), a second connecting rod (32), a second upper clamping plate (622), a second swing arm (42), a third upper clamping plate (623), a third connecting rod (33), a fourth upper clamping plate (624), a third swing arm (43), a first fixed shaft (81), a second fixed shaft (82), a third fixed shaft (83), a first front limit clamping block (911), A first rear limiting clamp (912), a second front limiting clamp (921), a second rear limiting clamp (922), a third front limiting clamp (931), a third rear limiting clamp (932), a first lower clamp (631), a second lower clamp (632), a third lower clamp (633), a first heald lifting rod (51), a second heald lifting rod (52), a third heald lifting rod (53), a fourth lower clamp (634), a fifth lower clamp (635), and a sixth lower clamp (636); The first swing arm (41), the second swing arm (42), and the third swing arm (43) are all L-shaped, and consist of a horizontal portion and a vertical portion; the crank (2), the first swing arm (41), the second swing arm (42), the third swing arm (43), the first lower clamping plate (631), the second lower clamping plate (632), the third lower clamping plate (633), the first heald lifting rod (51), the second heald lifting rod (52), the third heald lifting rod (53), the fourth lower clamping plate (634), the fifth lower clamping plate (635), and the sixth lower clamping plate (636) are all arranged vertically; the first connecting rod (31), the first middle clamping plate (61), the first upper clamping plate (621), the second connecting rod (32), the second upper clamping plate (622), the third upper clamping plate (623), the third connecting rod (33), and the fourth upper clamping plate (624) are all arranged horizontally; The rotating shaft of the servo motor (1) is fixedly connected to the lower end of the crank (2); The upper end of the crank (2) is hinged to the left end of the first connecting rod (31); The right end of the first connecting rod (31) is hinged to the left end of the first middle clamping plate (61); The right end of the first middle clamping plate (61) is fixedly connected to the middle end of the vertical portion of the first swing arm (41); The upper end of the vertical portion of the first swing arm (41) is hinged to the left end of the first upper clamping plate (621); The right end of the first upper clamping plate (621) is fixedly connected to the left end of the second connecting rod (32); The right end of the second connecting rod (32) is fixedly connected to the left end of the second upper clamping plate (622); The right end of the second upper clamping plate (622) is hinged to the upper end of the vertical portion of the second swing arm (42); The height of the secondary upper end of the vertical part of the second swing arm (42) is between the upper end of the vertical part of the second swing arm (42) and the middle end of the vertical part of the first swing arm (41), and the secondary upper end of the vertical part of the second swing arm (42) is hinged to the left end of the third upper clamping plate (623); The right end of the third upper clamping plate (623) is fixedly connected to the left end of the third connecting rod (33); The right end of the third connecting rod (33) is fixedly connected to the left end of the fourth upper clamping plate (624); The right end of the fourth upper clamping plate (624) is hinged to the upper end of the vertical portion of the third swing arm (43); The first fixed shaft (81), the second fixed shaft (82) and the third fixed shaft (83) are fixed to the loom frame, maintained at the same horizontal plane, and respectively penetrate the left end of the horizontal part of the first swing arm (41), the left end of the horizontal part of the second swing arm (42), and the left end of the horizontal part of the third swing arm (43); the first front limit clamping block (911) and the first rear limit clamping block (912) are clamped on the first fixed shaft (81), and are respectively connected to the front side of the first swing arm (41) at the front end and the front side of the first swing arm (41) at the rear end. The second front limit clamping block (921) and the second rear limit clamping block (922) are clamped on the second fixed shaft (82), and respectively contact the front side of the frontmost second swing arm (42) and the rear side of the rearmost second swing arm (42); the third front limit clamping block (931) and the third rear limit clamping block (932) are clamped on the third fixed shaft (83), and respectively contact the front side of the frontmost third swing arm (43) and the rear side of the rearmost third swing arm (43); The right end of the horizontal part of the first swing arm (41), the right end of the horizontal part of the second swing arm (42), and the right end of the horizontal part of the third swing arm (43) are respectively hinged to the upper end of the first lower clamping plate (631), the upper end of the second lower clamping plate (632), and the upper end of the third lower clamping plate (633); The lower end of the first lower clamping plate (631), the lower end of the second lower clamping plate (632), and the lower end of the third lower clamping plate (633) are respectively fixedly connected to the upper end of the first heald lifting rod (51), the upper end of the second heald lifting rod (52), and the upper end of the third heald lifting rod (53); The lower ends of the first heald lifting rod (51), the second heald lifting rod (52), and the third heald lifting rod (53) are fixedly connected to the upper ends of the fourth lower splint (634), the fifth lower splint (635), and the sixth lower splint (636), respectively; The lower end of the fourth lower clamping plate (634), the lower end of the fifth lower clamping plate (635), and the lower end of the sixth lower clamping plate (636) are simultaneously hinged to the heald lifting seat of the heald frame (7).

7. A servo-driven heavy-duty wide-width sisal loom opening device according to claim 6, characterized in that: The horizontal parts of the first swing arm (41), the second swing arm (42) and the third swing arm (43) have the same length, and the vertical parts of the first swing arm (41) and the second swing arm (42) have the same length and are greater than the length of the vertical part of the third swing arm (43).

8. A servo-driven heavy-duty wide-width sisal loom opening device according to claim 7, characterized in that: The lengths of the horizontal parts of the first swing arm (41), the second swing arm (42) and the third swing arm (43) are 350-450 mm, the lengths of the vertical parts of the first swing arm (41) and the second swing arm (42) are 600-700 mm, and the length of the vertical part of the third swing arm (43) is 480-580 mm.

Images