Heald lifting mechanism, shedding mechanism and weaving machine

Abstract

The invention discloses a heald lifting mechanism, an opening mechanism and a weaving machine, and relates to the technical field of metal mesh weaving machine structural design, and the heald lifting mechanism comprises a first connecting piece, a second connecting piece and a driving mechanism. The top end of the first connecting piece is hinged with a heald frame; the second connecting piece can be rotatably arranged on a fixed part, and the bottom end of the first connecting piece is hinged to the second connecting piece; the driving mechanism comprises a power source for outputting power, and the driving mechanism is constructed to only drive the second connecting piece to rotate forwards and backwards and drive the top end of the first connecting piece to ascend and descend. The heald lifting mechanism is provided with a power source, a transmission relation does not need to be established through a complex transmission mechanism and a crankshaft in the beating-up mechanism, the structure of the transmission mechanism is simplified, in addition, the load of the power source of the beating-up mechanism is reduced, then the power source in the beating-up mechanism can be set to be a servo motor, and the service life of the power source is prolonged. Therefore, accurate control of the beating-up mechanism is realized.

Description

Technical Field

[0001] The invention relates to the technical field of metal mesh loom structure design, in particular to a harness lifting mechanism, an opening mechanism and a loom. Background Art

[0002] The heald frame is an important part of the loom. It is a frame with a heald rod connected by upper and lower beams and left and right side rails. After the heald frame is equipped with a flat heald, the warp wires (metal wires) inserted into the flat heald are gathered into one body. With the movement of the heald lifting mechanism of the loom, the heald frame moves up and down according to the program of the opening mechanism, so that the warp wires are opened in layers, and the weft wires shuttle through the warp wires and interweave into a metal mesh; however, the power of the existing heald lifting mechanism comes from the crankshaft in the beating mechanism, which requires a complex transmission mechanism to drive the heald frame to move up and down. Summary of the invention

[0003] The object of the present invention is to provide a harness lifting mechanism, an opening mechanism and a loom to solve the problems existing in the above-mentioned prior art and simplify the equipment structure.

[0004] To achieve the above object, the present invention provides the following solutions: The present invention provides a heald lifting mechanism, comprising: a first connecting member, a second connecting member and a driving mechanism. The top end of the first connecting member is used for articulating with a heald frame; the second connecting member is rotatably arranged on a fixed component, and the bottom end of the first connecting member is articulated with the second connecting member; the driving mechanism comprises a power source for outputting power, and the driving mechanism is constructed to only drive the second connecting member to rotate forward and reversely and drive the top end of the first connecting member to rise and fall.

[0005] Preferably, the driving mechanism includes a linear electric cylinder and a driving rod, the linear electric cylinder is the power source, and the driving end of the linear electric cylinder can move along the length direction of the heald frame when it is in a working state; one end of the driving rod is hinged to the driving end of the linear electric cylinder, and the other end is hinged to the second connecting member.

[0006] Preferably, the top end of the first connecting member is used to be hinged to the right half of the heald frame; it also includes a third connecting member, a fourth connecting member and an intermediate connecting rod; the top end of the third connecting member is used to be hinged to the left half of the heald frame; the fourth connecting member is rotatably arranged on a fixed component, and the bottom end of the third connecting member is hinged to the fourth connecting member; the two ends of the intermediate connecting rod are respectively hinged to the second connecting member and the fourth connecting member.

[0007] Preferably, the first connecting member and the third connecting member are both rod-shaped structures.

[0008] Preferably, the second connecting member and the fourth connecting member each include a plurality of hinged parts and a rotating part, and the two rotating parts are rotatably arranged on the fixed component; and the plurality of hinged parts are connected to the rotating part as a whole via a rod-like structure.

[0009] The present invention also provides an opening mechanism, comprising a plurality of heald frames and a plurality of heald lifting mechanisms as described above; the number of the heald frames is the same as the number of the heald lifting mechanisms, the plurality of heald frames are arranged in parallel, and one heald lifting mechanism can drive one heald frame to rise and fall.

[0010] Preferably, a protective cover is provided on the upper cover of the harness lifting mechanism, a through hole is provided on the top of the protective cover, and the first connecting member of the harness lifting mechanism passes through the through hole.

[0011] Preferably, a plurality of the harness lifting mechanisms are arranged correspondingly in front and back, and a plurality of second connecting members are rotatably connected to a same fixed component via a same rotating shaft.

[0012] The present invention also provides a loom for weaving a metal mesh, comprising the opening mechanism as described above.

[0013] Preferably, the crankshaft in the beating mechanism of the loom is driven to rotate by a servo motor.

[0014] Compared with the prior art, the present invention has achieved the following technical effects: The sheath lifting mechanism provided by the present invention has its own power source, and there is no need to establish a transmission relationship through a complex transmission mechanism and a crankshaft in the beating-up mechanism, which simplifies the structure of the transmission mechanism. In addition, the scheme reduces the load of the power source of the beating-up mechanism, and thus the power source in the beating-up mechanism can be set as a servo motor, thereby realizing precise control of the beating-up mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of an opening mechanism provided by an embodiment of the present invention; Figure 2 for Figure 1 A front view of Figure 3 A schematic structural diagram of a harness lifting mechanism provided by an embodiment of the present invention; Figure 4 A schematic structural diagram of an opening mechanism with a protective cover provided in an embodiment of the present invention; Figure 5 A partial structural schematic diagram of a loom provided by an embodiment of the present invention; In the figure: 1-heald frame; 2-first connecting member; 3-second connecting member; 4-third connecting member; 5-fourth connecting member; 6-middle connecting rod; 7-linear electric cylinder; 8-driving rod; 9-protective cover; 10-through hole; 11-servo motor; 12-crankshaft; 13-driving gear; 14-driven gear. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The power of the existing heald lifting mechanism comes from the crankshaft in the beating mechanism, which requires a complex transmission mechanism to drive the heald frame to move up and down. In addition, it increases the load of the power source in the beating mechanism, which makes the power source in the beating mechanism usually use a three-phase motor in the prior art. The control accuracy of the three-phase motor is poor, resulting in poor product quality. The present application solves the above two problems.

[0020] Combine the following Figures 1 to 5 , describing an embodiment of the present invention.

[0021] The present invention provides a harness lifting mechanism, which is particularly suitable for a loom for weaving a metal mesh, and therefore can also be referred to as a harness lifting mechanism for a loom for weaving a metal mesh, such as Figure 1~Figure 4 As shown, it includes: a first connecting member 2, a second connecting member 3 and a driving mechanism. The top end of the first connecting member 2 is used to be hinged with the heald frame 1; the second connecting member 3 is rotatably arranged on a fixed component, and the bottom end of the first connecting member 2 is hinged with the second connecting member 3; the driving mechanism includes a power source for outputting power, and the driving mechanism is constructed to only drive the second connecting member 3 to rotate forward and reverse and drive the top end of the first connecting member 2 to rise and fall.

[0022] The sheath lifting mechanism provided by the present invention has its own power source, and there is no need to establish a transmission relationship with the crankshaft 12 in the beating-up mechanism through a complex transmission mechanism, which simplifies the structure of the transmission mechanism. In addition, the scheme reduces the load of the power source of the beating-up mechanism, and thus the power source in the beating-up mechanism can be set to the servo motor 11, thereby achieving precise control of the beating-up mechanism, and ultimately achieving the purpose of improving product quality.

[0023] In some embodiments, the driving mechanism includes a linear electric cylinder 7 and a driving rod 8. The linear electric cylinder 7 is a power source. When the driving end of the linear electric cylinder 7 is in a working state, it can move along the length direction of the heald frame 1; one end of the driving rod 8 is hinged to the driving end of the linear electric cylinder 7, and the other end is hinged to the second connecting member 3.

[0024] This embodiment drives the second connecting member 3 to rotate forward and reversely by extending and retracting the driving end of the linear electric cylinder 7 and drives the top end of the first connecting member 2 to rise and fall. In some embodiments, the second connecting member 3 can also be directly driven to rotate by a torque motor.

[0025] In some embodiments, the top end of the first connecting member 2 is used to be hinged to the right half of the heald frame 1; it also includes a third connecting member 4, a fourth connecting member 5 and an intermediate connecting rod 6; the top end of the third connecting member 4 is used to be hinged to the left half of the heald frame 1; the fourth connecting member 5 is rotatably arranged on a fixed component, and the bottom end of the third connecting member 4 is hinged to the fourth connecting member 5; the two ends of the intermediate connecting rod 6 are respectively hinged to the second connecting member 3 and the fourth connecting member 5.

[0026] In this embodiment, the first connecting member 2 and the second connecting member 3 form a transmission assembly; the third connecting member 4 and the fourth connecting member 5 form another transmission assembly. In this embodiment, the right half and the left half of the heald frame 1 are respectively applied with pulling force and pushing force by two linked transmission assemblies, thereby improving the uniformity and stability of the force of the heald frame 1. In addition, the two transmission assemblies share a power source, i.e., the linear electric cylinder 7 or the torque motor, which not only saves costs but also can achieve precise synchronous action.

[0027] In some embodiments, the first connecting member 2 and the third connecting member 4 are both rod-shaped structures. The second connecting member 3 and the fourth connecting member 5 each include a plurality of hinged parts and a rotating part, and the two rotating parts are rotatably arranged on the fixed component; and the plurality of hinged parts are connected to the rotating part as a whole through the rod-shaped structure.

[0028] The hinged part and the rotating part in this embodiment both represent a plate-like structure or a block-like structure, and the hinged part and the rotating part are rotatably connected to other structures through a rotating shaft. Each connecting member in the harness lifting mechanism provided in this embodiment has the advantage of being lightweight and having a simple structure.

[0029] The fixed component in the above-mentioned several embodiments may be a loom frame.

[0030] The action principle is as follows: when the heald frame 1 has the need to move downward, the control system controls the driving end of the linear electric cylinder 7 to extend, and the driving end drives the second connecting member 3 to rotate clockwise. The fourth connecting member 5 rotates clockwise synchronously with the second connecting member 3 under the push of the intermediate connecting rod 6. The second connecting member 3 drives the first connecting member 2 to move downward, and the fourth connecting member 5 drives the third connecting member 4 to move downward; the third connecting member 4 and the first connecting member 2 drive the heald frame 1 downward synchronously; conversely, when the heald frame 1 has the need to move upward, the control system controls the driving end of the linear electric cylinder 7 to retract, and the driving end drives the second connecting member 3 to rotate counterclockwise. The fourth connecting member 5 rotates counterclockwise synchronously with the second connecting member 3 under the pull of the intermediate connecting rod 6. The second connecting member 3 drives the first connecting member 2 to move upward, and the fourth connecting member 5 drives the third connecting member 4 to move upward; the third connecting member 4 and the first connecting member 2 drive the heald frame 1 upward synchronously.

[0031] The present invention also provides a shedding mechanism, comprising a plurality of heald frames 1 and a plurality of heald lifting mechanisms as described above; the number of heald frames 1 is the same as the number of heald lifting mechanisms, which can be 2, 3, 4, .... The plurality of heald frames 1 are arranged in parallel, and one heald lifting mechanism can drive one heald frame 1 to rise and fall.

[0032] This embodiment has all the advantages of the harness lifting mechanism provided in the above-mentioned embodiment, which will not be described in detail here.

[0033] In some embodiments, a protective cover 9 is provided on the upper cover of the harness lifting mechanism, a through hole 10 is provided on the top of the protective cover 9, and the first connecting member 2 of the harness lifting mechanism passes through the through hole 10.

[0034] This embodiment achieves the purpose of protecting the harness lifting mechanism without affecting the normal operation of the harness lifting mechanism.

[0035] In some embodiments, a plurality of harness lifting mechanisms are correspondingly arranged front and back, and a plurality of second connecting members 3 are rotatably connected to a same fixed component via a same rotating shaft.

[0036] The present invention also provides a loom for weaving a metal mesh, such as Figure 5 As shown, it includes the opening mechanism as described above.

[0037] This embodiment has all the advantages of the opening mechanism provided by the above-mentioned embodiment, which will not be described in detail here.

[0038] In some embodiments, the crankshaft 12 in the weft beating mechanism of the loom is driven to rotate by the servo motor 11. Specifically, a driving gear 13 is fixedly provided on the driving shaft of the servo motor 11; a driven gear 14 is fixedly provided at the end of the crankshaft 12; the driving gear 13 and the driven gear 14 are connected by a synchronous belt drive.

[0039] This embodiment achieves precise control of the beating-up mechanism, thereby improving product quality.

[0040] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A harness lifting mechanism, characterized in that: include: A first connecting piece, the top end of which is used for being hinged to the heald frame; a second connecting member, wherein the second connecting member is rotatably disposed on a fixed component, and a bottom end of the first connecting member is hinged to the second connecting member; The driving mechanism includes a power source for outputting power, and the driving mechanism is configured to only drive the second connecting member to rotate forward and reversely and to drive the top end of the first connecting member to rise and fall.

2. The harness lifting mechanism according to claim 1, characterized in that: The driving mechanism includes a linear electric cylinder and a driving rod. The linear electric cylinder is the power source. When the driving end of the linear electric cylinder is in a working state, it can move along the length direction of the heald frame. One end of the driving rod is hinged to the driving end of the linear electric cylinder, and the other end is hinged to the second connecting member.

3. The harness lifting mechanism according to claim 2, characterized in that: The top end of the first connecting member is used for hinged connection with the right half of the heald frame; it also includes a third connecting member, a fourth connecting member and an intermediate connecting rod; the top end of the third connecting member is used for hinged connection with the left half of the heald frame; the fourth connecting member is rotatably arranged on a fixed component, and the bottom end of the third connecting member is hinged to the fourth connecting member; the two ends of the intermediate connecting rod are respectively hinged to the second connecting member and the fourth connecting member.

4. The harness lifting mechanism according to claim 3, characterized in that: The first connecting member and the third connecting member are both rod-shaped structures.

5. The harness lifting mechanism according to claim 3, characterized in that: The second connecting member and the fourth connecting member each include a plurality of hinged parts and a rotating part, and the two rotating parts are rotatably arranged on the fixed component; the plurality of hinged parts are connected to the rotating part as a whole through a rod-like structure.

6. An opening mechanism, characterized in that: It comprises a plurality of heald frames and a plurality of heald lifting mechanisms as described in any one of claims 1 to 5; the number of the heald frames is the same as the number of the heald lifting mechanisms, the plurality of heald frames are arranged in parallel, and one heald lifting mechanism can drive one heald frame to rise and fall.

7. The opening mechanism according to claim 6, characterized in that: A protective cover is provided on the upper cover of the harness lifting mechanism, a through hole is provided on the top of the protective cover, and the first connecting member of the harness lifting mechanism passes through the through hole.

8. The opening mechanism according to claim 6, characterized in that: The plurality of harness lifting mechanisms are arranged correspondingly in front and back, and the plurality of second connecting members are rotatably connected to the same fixed component through the same rotating shaft.

9. A loom for weaving a metal mesh, characterized in that: Comprising the opening mechanism described in any one of claims 6 to 8.

10. The loom according to claim 9, characterized in that: The crankshaft in the beating-up mechanism of the loom is driven to rotate by a servo motor.

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