A height adjustment device for heald frame

Abstract

The invention relates to the technical field of textile equipment, and discloses a height adjustment device for a heald frame, comprising adjustment units for respectively adjusting the heights of a plurality of mutually parallel heald frames, each adjustment unit comprising a connecting rod, the upper end of the connecting rod being connected to the heald frame, the lower end of the connecting rod being connected to an output rod via an adjustment rod, the connecting rod and the adjustment rod being connected via a height adjustment mechanism, the height adjustment mechanisms in each adjustment unit being connected to a controller for controlling the height adjustment of the heald frame, the invention controls the height adjustment mechanisms of each adjustment unit via a controller to adjust the height of the connecting rod relative to the adjustment rod, thereby achieving height adjustment of the heald frame, and can simultaneously automatically adjust a plurality of heald frames to the same or different heights, without the need for manual adjustment in sequence or shutdown, and not only is the adjustment process simple and easy to operate, but the adjustment efficiency is also high, and production will not be affected.

Description

Technical Field

[0001] The invention relates to the technical field of powder material textile equipment, and in particular to a height adjustment device for a heald frame. Background Art

[0002] During the weaving process, an opening mechanism is required. Currently, the common opening mechanism usually has a set of output rods rotating around an axis, each of which is connected to the heald frame of the loom through a corresponding connecting rod structure. A cam or other eccentric transmission mechanism is used to make the output rods swing alternately, and the connecting rod structure drives the corresponding heald frame to move vertically up and down, and the heald frame drives the warp yarn to move up and down to achieve various opening actions. An easily implemented driving method is that the output rod reciprocates between two positions, thereby driving the heald frame to reciprocate between the upper and lower positions through the connecting rod structure.

[0003] At present, before the loom starts weaving, it is usually necessary to adjust the height of the heald frame to adapt to the requirements of the woven variety on the height of the heald frame, to ensure the normal operation of the loom and prevent the occurrence of defective products; and sometimes when the weaving efficiency is not high, it is also necessary to make necessary adjustments to the height of the heald frame of the loom. When selecting the heald frame, many manufacturers only pay attention to the brand of the heald frame but do not pay attention to the influence of the height of the crossbeam on the loom speed, causing the loom to work in a critical state, which greatly affects the work efficiency.

[0004] The existing invention patent with the publication number CN109881326A discloses an electronic opening device for a loom, in which the connecting rod structure that drives the heald frame to move vertically up and down is a connecting rod extending vertically downward below the heald frame, and the connecting rod is inserted into the vertical connecting rod 2. Specifically, the vertical connecting rod 2 is a tubular structure with a rectangular cross-section, and the connecting rod is inserted into the vertical connecting rod 2. A fixing bolt is also provided on one side of the vertical connecting rod 2, and the screw of the fixing bolt abuts against the connecting rod to position it. Therefore, when it is necessary to adjust the height of the heald frame, the height of the heald frame is generally adjusted by loosening the fixing bolt and then adjusting the depth of the connecting rod inserted into the vertical connecting rod. Since multiple heald frames need to be adjusted separately in sequence, not only the workload is large and the work efficiency is low, but also the entire textile machine needs to be shut down when adjusting separately, thus greatly reducing the production efficiency. Summary of the invention

[0005] The object of the present invention is to provide a height adjustment device for a heald frame, which can automatically adjust multiple heald frames to the same or different heights at the same time without manual adjustment or downtime. Not only is the adjustment process simple and easy to operate, but the adjustment efficiency is high and will not affect production.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A height adjustment device for a heald frame comprises adjustment units for adjusting the heights of a plurality of mutually parallel heald frames respectively, each adjustment unit comprises a connecting rod, the upper end of the connecting rod is connected to the heald frame, the lower end of the connecting rod is connected to an output rod via an adjustment rod, the connecting rod and the adjustment rod are connected via a height adjustment mechanism, and the height adjustment mechanism in each adjustment unit is connected to a controller for controlling the height adjustment of the heald frame.

[0008] By adopting the above technical solution, the controller adjusts the height of the connecting rod relative to the adjusting rod by controlling the height adjustment mechanism of each adjusting unit, thereby realizing height adjustment of the heald frame. The controller can control multiple adjusting units to perform automatic adjustment of the same height or different heights at the same time, without manual adjustment in sequence or shutdown. Not only is the adjustment process simple and easy to operate, but the adjustment efficiency is also high and will not affect production.

[0009] The present invention is further configured as follows: the connecting rod is cylindrical, the height adjustment mechanism includes a plurality of radially movable adjustment sliders arranged circumferentially on the outer wall at the lower end of the connecting rod, the upper end of the adjusting rod is provided with a cylindrical cavity 1 extending vertically downward, a rotating drive rod coaxial therewith is provided in the cylindrical cavity 1, the upper end of the adjusting rod is provided with a limit plate for axially limiting the rotating drive rod, the upper end of the rotating drive rod is provided with a cylindrical cavity 2 extending vertically downward, and a plurality of spiral grooves respectively matching the adjusting sliders on the connecting rod are provided on the inner wall of the cylindrical cavity 2.

[0010] By adopting the above technical solution, the radial movement of the adjusting slider at the lower end of the connecting rod is controlled so that the adjusting slider matching the belt adjustment height is extended into the corresponding spiral groove, and then the adjusting rod is rotated so that the adjusting slider extended into the spiral groove brings the connecting rod up or down to the set height, thereby realizing the adjustment of the height of the connecting rod relative to the adjusting rod. When the adjusting rod stops rotating, the adjusting slider is fixed under the squeezing of the two side walls of the spiral groove, thereby realizing self-locking after height adjustment, ensuring the stability of the height of the heald frame during the reciprocating up and down movement after the height adjustment is completed, thereby effectively ensuring the textile quality of the loom after the height adjustment of the heald frame is completed.

[0011] The present invention is further configured as follows: horizontal slide grooves matching multiple adjustment sliders are respectively provided on the outer wall of the connecting rod, the horizontal slide grooves all extend toward the axis of the connecting rod, an electromagnet is provided at one end of the horizontal slide groove close to the axis of the connecting rod, the adjustment slider is connected to the electromagnet through a spring, and the adjustment slider is made of magnetic material.

[0012] By adopting the above technical scheme, when the height of the heald frame needs to be adjusted, the electromagnet connected to the adjusting slider matching the height to be adjusted of the connecting rod in each adjusting unit is controlled to be de-energized, and at the same time, the electromagnets of other adjusting sliders are energized, and the adjusting slider connected to the energized electromagnet slides to the side close to the axis of the connecting rod under the action of the magnetic force of the electromagnet, and the adjusting slider connected to the de-energized electromagnet slides to the side away from the axis of the connecting rod under the action of the elastic force of the spring and extends into the spiral groove corresponding to the adjusting slider, ensuring that each connecting rod always has only one adjusting slider connected to the spiral groove on the adjusting rod. Therefore, when the adjusting rod rotates, only the adjusting slider connected to the spiral groove on the adjusting rod moves up and down with the connecting rod, thereby ensuring the normal lifting and lowering adjustment operation. When the height adjustment of the heald frame is completed, the adjusting rod in each adjusting unit stops rotating, so that the adjusting slider connected to the spiral groove on the adjusting rod in each adjusting unit is stuck in the spiral groove, so that the adjusting rod and the connecting rod are axially fixed, thereby realizing the rapid locking of the height of each heald frame after the height adjustment is completed. The whole process does not require shutdown operation, and does not require additional locking structure. The design is ingenious, and the structure is simple and the cost is low.

[0013] The present invention is further configured as follows: the electromagnet is connected to the controller via a circuit.

[0014] By adopting the above technical solution, the controller controls the on and off of the electromagnets in each adjustment unit through a control program, thereby automatically controlling the adjustment of the height of the heald frame by each adjustment unit, so that multiple adjustment units can automatically adjust the height of multiple heald frames at the same time, without the need for manual adjustment in sequence or shutdown. Not only is the adjustment process simple and easy to operate, but the adjustment efficiency is also high and will not affect production.

[0015] The present invention is further configured as follows: the pitches of the spiral grooves on the two inner walls of the cylindrical cavity are different.

[0016] By adopting the above technical solution, spiral grooves with different pitches can ensure that the connecting rod can be driven to rise or fall to different heights when the adjusting rod is rotated at the same angle, thereby realizing the control of multiple adjustment units to perform automatic adjustment to the same height or different heights at the same time, with a simple structure and easy operation.

[0017] The present invention is further configured as follows: a circular through hole is provided on the limit plate in the height adjustment mechanism of each adjustment unit, an annular boss is provided on the upper end of the rotating drive rod, the annular boss extends from the circular through hole, and the part of the annular boss extending from the circular through hole is connected to the drive mechanism.

[0018] By adopting the above technical solution, the limiting plates in each adjustment unit are used to axially limit each adjustment rod, so that each adjustment rod will not slide axially when rotating, thereby effectively ensuring the height adjustment accuracy of each adjustment unit.

[0019] The present invention is further configured as follows: the driving mechanism includes a driving motor, the driving motor is fixedly connected to the adjusting rod through a support plate, the output shaft of the driving motor is connected to a worm, both ends of the worm are mounted on the support plate through bearing seats, and the worm is respectively meshed with a turbine fixedly arranged on an annular boss on the upper end of each adjusting rod.

[0020] By adopting the above technical scheme, the driving mechanism is used to drive the adjusting rods in each adjusting unit to rotate respectively, thereby realizing the automatic height adjustment of each adjusting unit. The driving motor in the driving mechanism is used to drive the worm to rotate. When the worm rotates, it drives the turbine on the annular boss fixed on the upper end of the adjusting rod in each adjusting unit to rotate. When each turbine rotates, it also drives the adjusting rods to rotate. When each adjusting rod rotates at the same time, the spiral grooves with the same or different pitches cooperate with the adjusting slider on the connecting rod to drive the connecting rod to rise or fall to the same or different heights, thereby realizing the control of multiple adjusting units to perform automatic adjustment of the same height or different heights at the same time, and the structure is simple and the synchronization is good.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention controls the height adjustment mechanism of each adjustment unit through a controller to adjust the height of the connecting rod relative to the adjustment rod, thereby realizing height adjustment of the heald frame. The controller controls the on and off of the electromagnets in each adjustment unit through a control program, thereby automatically controlling the adjustment of the height of the heald frame by each adjustment unit, so that multiple adjustment units can automatically adjust the height of multiple heald frames at the same time, without manual adjustment in sequence or shutdown. Not only is the adjustment process simple and easy to operate, but the adjustment efficiency is also high and will not affect production.

[0023] 2. The present invention controls the radial movement of the adjusting slider at the lower end of the connecting rod so that the adjusting slider matching the belt height adjustment is inserted into the corresponding spiral groove, and then the adjusting rod is rotated so that the adjusting slider inserted into the spiral groove brings the connecting rod up or down to the set height, thereby realizing the adjustment of the height of the connecting rod relative to the adjusting rod. When the adjusting rod stops rotating, the adjusting slider is fixed under the squeezing of the two side walls of the spiral groove, thereby realizing self-locking after height adjustment, ensuring the stability of the height of the heald frame during the reciprocating up and down movement of the heald frame after the height adjustment is completed, thereby effectively ensuring the textile quality of the loom after the height adjustment of the heald frame is completed.

[0024] 3. The present invention can ensure that the connecting rod can be driven to rise or fall to different heights when the adjusting rod rotates at the same angle through spiral grooves with different pitches, thereby realizing the control of multiple adjusting units to perform automatic adjustment of the same height or different heights at the same time, with a simple structure and easy operation.

[0025] 4. The present invention drives the adjusting rods in each adjusting unit to rotate through a driving mechanism, thereby realizing automatic height adjustment of each adjusting unit. The driving motor in the driving mechanism is used to drive the worm to rotate. When the worm rotates, it drives the turbine on the annular boss fixed on the upper end of the adjusting rod in each adjusting unit to rotate. When each turbine rotates, it also drives each adjusting rod to rotate. When each adjusting rod rotates at the same time, the spiral grooves with the same or different pitches cooperate with the adjusting slider on the connecting rod to drive the connecting rod to rise or fall to the same or different heights, thereby realizing the control of multiple adjusting units to perform automatic adjustment of the same height or different heights at the same time, and the structure is simple and the synchronization is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work.

[0027] Figure 1 The invention is a structural schematic diagram of a height adjustment device for a heald frame connected to a heald frame.

[0028] Figure 2 It is a schematic diagram of the connection structure between multiple adjustment units and a driving mechanism.

[0029] Figure 3 The invention discloses a schematic cross-sectional structure diagram of an adjusting unit in a height adjusting device for a heald frame.

[0030] Figure 4 yes Figure 3 A is a partial enlarged schematic diagram of the middle part.

[0031] In the figure, 1, heald frame; 2, adjusting unit; 201, connecting rod; 202, adjusting rod; 203, cylindrical cavity one; 204, cylindrical cavity two; 205, spiral groove; 206, horizontal slide groove; 207, electromagnet; 208, spring; 209, annular boss; 210, circular through hole; 3, output rod; 4, height adjustment mechanism; 401, adjusting slider; 402, rotating drive rod; 403, limit plate; 5, driving mechanism; 501, driving motor; 502, supporting plate; 503, worm; 504, bearing seat; 505, turbine. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0033] like Figure 1~Figure 4 As shown, a height adjustment device for a heald frame comprises adjustment units 2 for adjusting the heights of a plurality of mutually parallel heald frames 1 respectively, each adjustment unit 2 comprises a connecting rod 201, the upper end of the connecting rod 201 is connected to the heald frame 1, the lower end of the connecting rod 201 is connected to the output rod 3 via an adjustment rod 202, the connecting rod 201 and the adjustment rod 202 are connected via a height adjustment mechanism 4, and the height adjustment mechanism 4 in each adjustment unit 2 is connected to a controller for controlling the height adjustment of the heald frame 1.

[0034] Furthermore, the connecting rod 201 is cylindrical, and the height adjustment mechanism 4 includes a plurality of radially movable adjusting sliders 401 arranged circumferentially on the outer wall at the lower end of the connecting rod 201, and the upper end of the adjusting rod 202 is provided with a cylindrical cavity 203 extending vertically downward, and a rotating drive rod 402 coaxial therewith is provided in the cylindrical cavity 203, and a limiting plate 403 for axially limiting the rotating drive rod 402 is provided at the upper end of the adjusting rod 202, and a cylindrical cavity 204 extending vertically downward is provided at the upper end of the rotating drive rod 402, and a plurality of spiral grooves 205 are provided on the inner wall of the cylindrical cavity 204, which respectively match the adjusting sliders 401 on the connecting rod 201.

[0035] Furthermore, the outer wall of the connecting rod 201 is provided with horizontal slide grooves 206 respectively matching with multiple adjustment sliders 401, and the horizontal slide grooves 206 all extend toward the axis of the connecting rod 201. An electromagnet 207 is provided at one end of the horizontal slide groove 206 close to the axis of the connecting rod 201. The adjustment slider 401 is connected to the electromagnet 207 through a spring 208, and the adjustment slider 401 is made of magnetic material.

[0036] Furthermore, the electromagnet 207 is connected to the controller via a circuit.

[0037] Furthermore, the pitches of the spiral grooves 205 on the inner wall of the second cylindrical cavity 204 are different.

[0038] Furthermore, a circular through hole 210 is provided on the limit plate 403 in the height adjustment mechanism 4 of each adjustment unit 2, and an annular boss 209 is provided at the upper end of the rotating drive rod 402. The annular boss 209 extends out of the circular through hole 210, and the part of the annular boss 209 extending out of the circular through hole 210 is connected to the driving mechanism 5.

[0039] Furthermore, the driving mechanism 5 includes a driving motor 501, which is fixedly connected to the adjusting rod 202 through a supporting plate 502. The output shaft of the driving motor 501 is connected to a worm 503. Both ends of the worm 503 are mounted on the supporting plate 502 through a bearing seat 504. The worm 503 is respectively engaged with a turbine 505 fixedly arranged on the annular boss 209 at the upper end of each adjusting rod 202.

[0040] The working principle of the present invention is as follows: when the height of the heald frame 1 needs to be adjusted, the controller controls the electromagnet 207 connected to the adjusting slider 401 matching the height to be adjusted of the connecting rod 201 in each adjusting unit 2 to be de-energized according to the set program, and at the same time, the electromagnets 207 of other adjusting sliders 401 are energized, and the adjusting slider 401 connected to the energized electromagnet 207 slides toward the side close to the axis of the connecting rod 201 under the action of the magnetic force of the electromagnet 207, while the adjusting slider 401 connected to the de-energized electromagnet 207 slides toward the side away from the axis of the connecting rod 201 under the action of the elastic force of the spring 208 and extends into the spiral groove 205 corresponding to the adjusting slider 401, ensuring that each connecting rod 201 always has only one adjusting slider 401 connected to the spiral groove 205 on the adjusting rod 202 (such as Figure 4 As shown in the figure, the driving motor 501 in the driving mechanism 5 is started, and the driving motor 501 drives the worm 503 to rotate when rotating. When the worm 503 rotates, it drives the turbine 505 fixed on the annular boss 209 at the upper end of the rotating driving rod 402 in each adjusting unit 2 to rotate. When each turbine 505 rotates, it also drives each rotating driving rod 402 to rotate. When the rotating driving rod 402 rotates, the adjusting slider 401 connected only to the spiral groove 205 on the rotating driving rod 402 moves up and down with the connecting rod 201, and the height adjustment of the heald frame 1 is realized when the connecting rod 201 moves up and down. When the height adjustment of the heald frame 1 is completed, the driving motor 501 in the driving mechanism 5 stops working, so that the rotating driving rod 402 in each adjusting unit 2 stops rotating, so that the adjusting slider 401 in each adjusting unit 2 connected to the spiral groove 205 on the rotating driving rod 402 is stuck in the spiral groove 205, ensuring that the rotating driving rod 402 and the connecting rod 201 are axially fixed, thereby realizing the rapid locking of the height of each heald frame 1 after the height adjustment is completed, and the whole process does not require shutdown operation and does not require additional locking structure, the design is ingenious, and the structure is simple and the cost is low.

Claims

1. A height adjustment device for a heald frame, characterized in that: It comprises an adjustment unit (2) for adjusting the height of a plurality of mutually parallel heald frames (1), each adjustment unit (2) comprising a connecting rod (201), the upper end of the connecting rod (201) being connected to the heald frame (1), the lower end of the connecting rod (201) being connected to an output rod (3) via an adjustment rod (202), the connecting rod (201) and the adjustment rod (202) being connected via a height adjustment mechanism (4), and the height adjustment mechanism (4) in each adjustment unit (2) being connected to a controller for controlling the height adjustment of the heald frame (1); The connecting rod (201) is cylindrical, and the height adjustment mechanism (4) comprises a plurality of radially movable adjustment sliders (401) arranged circumferentially on the outer wall at the lower end of the connecting rod (201); the upper end of the adjustment rod (202) is provided with a cylindrical cavity 1 (203) extending vertically downward, and a rotating drive rod (402) coaxial therewith is provided in the cylindrical cavity 1 (203); the upper end of the adjustment rod (202) is provided with a limit plate (403) for axially limiting the rotating drive rod (402); the upper end of the rotating drive rod (402) is provided with a cylindrical cavity 2 (204) extending vertically downward, and the inner wall of the cylindrical cavity 2 (204) is provided with a plurality of spiral grooves (205) respectively matching the adjustment sliders (401) on the connecting rod (201).

2. A height adjustment device for a heald frame according to claim 1, characterized in that: The outer wall of the connecting rod (201) is provided with horizontal slide grooves (206) respectively matching with a plurality of adjusting sliders (401), the horizontal slide grooves (206) all extend toward the axis of the connecting rod (201), an electromagnet (207) is provided at one end of the horizontal slide groove (206) close to the axis of the connecting rod (201), the adjusting slider (401) is connected to the electromagnet (207) via a spring (208), and the adjusting slider (401) is made of a magnetic material.

3. A height adjustment device for a heald frame according to claim 2, characterized in that: The electromagnet (207) is connected to the controller via a circuit.

4. A height adjustment device for a heald frame according to claim 1, characterized in that: The pitches of the spiral grooves (205) on the inner wall of the second cylindrical cavity (204) are all different.

5. A height adjustment device for a heald frame according to claim 1, characterized in that: A circular through hole (210) is provided on the limiting plate (403) in the height adjustment mechanism (4) of each adjustment unit (2); an annular boss (209) is provided at the upper end of the rotation drive rod (402); the annular boss (209) protrudes from the circular through hole (210); and the portion of the annular boss (209) protruding from the circular through hole (210) is connected to the drive mechanism (5).

6. A height adjustment device for a heald frame according to claim 5, characterized in that: The driving mechanism (5) comprises a driving motor (501), the driving motor (501) being fixedly connected to the adjusting rod (202) via a supporting plate (502), the output shaft of the driving motor (501) being connected to a worm (503), both ends of the worm (503) being mounted on the supporting plate (502) via a bearing seat (504), and the worm (503) being respectively meshed with a turbine (505) fixedly arranged on an annular boss (209) at the upper end of each adjusting rod (202).

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