CN216274569U

CN216274569U - Dobby with adjusting function for lifting heald arm

Info

Publication number: CN216274569U
Application number: CN202122993543.6U
Authority: CN
Inventors: 金永良; 吕雪奎; 杨佳敏; 陶建新
Original assignee: Jiangsu Jinlong Technology Co Ltd
Current assignee: Jiangsu Jinlong Technology Co Ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-04-12
Anticipated expiration: 2031-12-01

Abstract

A dobby with a function of adjusting a shedding arm belongs to the technical field of textile machinery. Comprises a box body, wherein a left supporting wallboard and a right supporting wallboard are arranged in a cavity of the box body; the left end of conjugate camshaft supports front end upper portion, the right-hand member of left side supporting wallboard and supports front end upper portion, the middle part of right side supporting wallboard and has the conjugate cam, and the conjugate cam has the first, second rim of conjugate cam, and the lifting heald arm axle left spindle nose of lifting heald arm axle supports and establishes lifting heald arm, characteristics at rear end upper portion, the middle part of left side supporting wallboard, right spindle nose support right side supporting wallboard: still include the shedding arm axle adjustment mechanism, establish fixed cover cooperation spindle nose on its left wall body and visit out the hole of stepping down, the shedding arm axle constitutes for the eccentric shaft structure and has fixed cover cooperation spindle nose on shedding arm axle left side spindle nose, shedding arm axle adjustment mechanism is fixed with fixed cover cooperation spindle nose outside the left wall body of box. The noise caused by poor contact is avoided, the conjugate cam, the first roller and the second roller are prevented from being damaged, and the stability and the reliability of the action of the heald lifting arm are guaranteed.

Description

Dobby with adjusting function for lifting heald arm

Technical Field

The utility model belongs to the technical field of textile machinery, and particularly relates to a dobby with a function of adjusting a shedding arm.

Background

As is known in the art, on weaving looms, the pattern of motion required to separate the warp yarns up and down to form a shed is referred to as shedding. The mechanism that performs the shedding action is a shedding mechanism, that is, the warp yarns are separated up and down by the action of the shedding mechanism to form the shed. Shedding mechanisms are of various types, such as cam and link shedding mechanisms, which are suitable for weaving plain, twill and other simple fabrics with looms, and which are designed with relatively few, usually 2-8, heald frames, and also dobby shedding mechanisms, which are heavier than people because they are suitable for relatively complex patterns, and which are designed with about 14-32 heald frames.

As is also known in the art, in the construction of dobbies with a conjugate camshaft and a lifting heddle arm shaft arranged in a box, the lifting heddle arms arranged on the lifting heddle arm shaft are correspondingly also referred to as swing arms, since the lifting heddle arm shaft is also commonly referred to as swing arm shaft. From the foregoing, the term "definitions" is used: the conjugate camshaft is used for setting the conjugate cam, the heald lifting arm shaft is used for setting the heald lifting arm, the conjugate camshaft is driven to rotate by a worm gear device connected with one end of the conjugate camshaft, so that a group of conjugate cams which are fixed on the conjugate camshaft and positioned in the box body rotate, and each conjugate cam corresponds to two rollers on one heald lifting arm and the two rollers are respectively matched with two rims of the conjugate cam, so that in the process that the conjugate cam fixed on the conjugate camshaft is driven to rotate, the rims of the conjugate cams act on the rollers, and the rollers are fixed on the heald lifting arms, so that the heald lifting arms are driven to move by the rollers, and finally, the heald lifting arms drive the heald frames to move, namely, the opening is realized. This is also fully understood by reading the external patent documents CN1057352C (rotary dobbies and looms equipped with such dobbies), CN102400257B (rotary dobby shedding mechanism), FR- A-2540524 (rotary dobbies for looms) and CN110387624A (rotary dobbies and looms).

As mentioned above, the conjugate cam shaft and the heald lifting arm shaft are installed in the box, theoretically, the roller fixed on the heald lifting arm (each heald lifting arm has two rollers) can meet the requirement of zero-clearance fit with the rim surface of the conjugate cam, but due to the restrictions of processing precision error, installation precision error, natural factors of thermal expansion and cold contraction, abrasion factors in the working process and the like, an undesirable but objectively unavoidable gap often exists between the roller and the rim surface of the conjugate cam, so that noise is generated extremely easily in the working process, both the conjugate cam and the roller are easily damaged, the action stability and reliability of the heald lifting arm are affected, and finally the shedding effect of the loom heald frame is affected. Therefore, it is of positive significance to search for technical means for solving the aforementioned problems, and the technical solutions to be described below are made in this context.

SUMMERY OF THE UTILITY MODEL

The aim of the utility model is to provide a dobby with a function of adjusting the lifting arms, which is helpful to eliminate the gap between the roller fixed on the lifting arms and the rims of the conjugate cams fixed on the conjugate cam shafts, thereby avoiding the noise, preventing the conjugate cams and the roller from being damaged, and ensuring the stability and reliability of the movement of the lifting arms.

The utility model aims to accomplish the task, and the dobby with the function of adjusting the lifting arms comprises a box body, wherein a left supporting wall plate and a right supporting wall plate are formed in a box body cavity of the box body; a conjugate camshaft whose left end is rotatably supported on the upper portion of the front end of the left support wall panel and whose right end is rotatably supported on the upper portion of the front end of the right support wall panel, and a conjugate cam having a conjugate cam first flange I and a conjugate cam second flange II is fixed to the middle portion of the conjugate camshaft, a harness arm shaft left head of the harness arm shaft is supported on the upper portion of the rear end of the left support wall panel and a harness arm shaft right head of the harness arm shaft is supported on the upper portion of the rear end of the right support wall panel, harness arms equal in number to the number of the conjugate cams and corresponding in position to the conjugate cams are rotatably provided in the middle portion of the harness arm shaft, a first roller I is fixed to the left side of the harness arm and at a position corresponding to the conjugate cam first flange I, and a second roller II is fixed to the right side of the harness arm and at a position corresponding to the conjugate cam second flange II, first gyro wheel I contacts with I contact of the first rim of yoke cam, and second gyro wheel II contacts with II contacts of yoke cam second rim, characterized in that still including a lifting heddle arm axle adjustment mechanism on the left wall body of box and corresponding to the position of the left end of lifting heddle arm axle has been seted up a fixed cover cooperation spindle nose and has been visited the hole of stepping down, lifting heddle arm axle constitutes for the eccentric shaft structure and extends on the lifting heddle arm axle left side spindle nose of this lifting heddle arm axle has a fixed cover cooperation spindle nose, and this fixed cover cooperation spindle nose is via fixed cover cooperation spindle nose is visited the hole of stepping down and is extended outside the left wall body of box, lifting heddle arm axle adjustment mechanism outside the left wall body of box with fixed cover cooperation is fixed.

In a specific embodiment of the utility model, a conjugate camshaft left supporting bearing cavity is formed on the upper part of the front end of the left supporting wall plate, and a heald lifting arm shaft left shaft head supporting bearing cavity is formed on the upper part of the rear end of the left supporting wall plate; a conjugate camshaft right supporting bearing cavity is formed at the upper part of the front end of the right supporting wallboard, and a lifting heald arm shaft right shaft head supporting bearing cavity is formed at the upper part of the rear end of the right supporting wallboard; the left end of the conjugate camshaft is rotatably supported in the left conjugate camshaft support bearing cavity through a left conjugate camshaft support bearing, and the right end of the conjugate camshaft is rotatably supported in the right conjugate camshaft support bearing cavity through a right conjugate camshaft support bearing; the heald lifting arm shaft left shaft head of the heald lifting arm shaft is supported in the heald lifting arm shaft left shaft head supporting bearing cavity through a heald lifting arm shaft left shaft head supporting bearing, and the heald lifting arm shaft right shaft head of the heald lifting arm shaft is supported in the heald lifting arm shaft right shaft head supporting bearing cavity through a heald lifting arm shaft right shaft head supporting bearing.

In another specific embodiment of the utility model, a conjugate camshaft left support bearing cap for defining a conjugate camshaft left support bearing is fixed on the front end upper portion of the left support wall panel and at a position corresponding to the conjugate camshaft left support bearing, and a harness lift arm left support bearing cap for defining a harness lift arm left head support bearing is fixed on the rear end upper portion of the left support wall panel and at a position corresponding to the harness lift arm left head support bearing; a conjugate camshaft right support bearing cap for defining the conjugate camshaft right support bearing is fixed at a position corresponding to the conjugate camshaft right support bearing and at an upper portion of a front end of the right support wall plate, and a harness lift arm right support bearing cap for defining the harness lift arm right stub support bearing is fixed at a position corresponding to the harness lift arm right stub support bearing and at an upper portion of a rear end of the right support wall plate.

In a further embodiment of the utility model, the first roller i is fixed to the left side of the lifting heddle arm by a set of first roller fixing screws i, and the second roller ii is fixed to the right side of the lifting heddle arm by a set of second roller fixing screws ii, the first roller rim i of the first roller i being in contact with the conjugate cam first rim i, the second roller rim ii of the second roller ii being in contact with the conjugate cam second rim ii.

In a further embodiment of the utility model, a left machining hole is formed in the left side of the box body and at a position corresponding to the left bearing cavity of the conjugate camshaft, and a right machining hole is formed in the right side of the box body and at a position corresponding to the right spindle head bearing cavity of the lifting arm shaft, and after the machining of the box body is completed, the left machining hole and the right machining hole are in a blocking state.

In a further specific embodiment of the present invention, a power input shaft hole is formed at the right end of the front side of the box body, and the power input shaft extending into the box body cavity through the power input shaft hole drives a worm gear device which is in transmission connection with the right end of the conjugate camshaft and is also arranged in the box body cavity to move the conjugate camshaft.

In a more specific embodiment of the present invention, conjugate cam fixing disks equal in number to the number of the conjugate cams are integrally formed on the conjugate camshaft, conjugate cam bolt fixing holes are opened in the conjugate cam fixing disks, conjugate cam bolt holes are opened in the conjugate cam at positions corresponding to the conjugate cam bolt fixing holes, and the conjugate cam fixing disks are fixed by conjugate cam fixing bolts as fasteners at positions corresponding to the conjugate cam bolt holes and the conjugate cam bolt fixing holes.

In a further embodiment of the utility model, the fixing sleeve of the heald lifting arm shaft left head of the heald lifting arm shaft cooperates with the centers of the head, the heald lifting arm shaft right head and the middle region of the heald lifting arm shaft to be non-concentric.

In yet another embodiment of the present invention, the shaft adjusting mechanism of the lifting arm comprises a handle seat, a handle, a tightening fixing sleeve and a hoop, wherein one end of the handle facing the handle seat is fixed to the handle seat, the other end of the handle is a snap end, the tightening fixing sleeve is fixed at the center of the right side of the handle seat and is sleeved on the fixing sleeve fitting shaft head, the hoop is clasped on the tightening fixing sleeve, and the tightening fixing sleeve is tightly fitted with the fixing sleeve fitting shaft head by the hoop.

In yet another embodiment of the present invention, a pair of tightening screw holes 180 ° apart from each other are formed in the handle seat around the circumferential direction of the handle seat, a tightening screw is respectively disposed on each of the tightening screw holes, the right end face of the tightening screw contacts with the left wall body of the box body, tightening grooves are formed in the tightening fixing sleeves at intervals, and a hoop clamping screw is disposed on the hoop and at the opening portion of the hoop.

The technical scheme provided by the utility model has the technical effects that: the heald lifting arm shaft is designed into an eccentric shaft structure, and the heald lifting arm shaft adjusting mechanism is additionally arranged at the position of the fixed sleeve matched with the shaft head of the left shaft head of the heald lifting arm shaft, so that the heald lifting arm shaft is driven by operating the heald lifting arm shaft adjusting mechanism as required, the heald lifting arm is driven by the heald lifting arm shaft, and a first roller I and a second roller II which are fixed on the heald lifting arm can be in good contact with a first wheel rim I and a second wheel stage II of a conjugate cam of the conjugate cam respectively, so that noise caused by poor contact can be avoided, damage to the conjugate cam, the first roller I and the second roller II can be avoided, and the stability and reliability of the movement of the heald lifting arm can be guaranteed.

Drawings

FIG. 1 is a block diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of the conjugate cam shown in fig. 1 cooperating with a lifting heddle arm.

Detailed Description

In order to clearly understand the technical spirit and the advantages of the present invention, the applicant below describes in detail by way of example, but the description of the example is not intended to limit the technical scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in material, should be considered as the technical scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the position state of fig. 1, and thus, it should not be understood as a particular limitation to the technical solution provided by the present invention.

Referring to fig. 1, there is shown a box body 1 provided with a box cover (not shown) in an actual use state, and a left supporting wall plate 12 and a right supporting wall plate 13 are formed in a box body cavity 11 of the box body 1; a conjugate camshaft 2 and a harness arm shaft 3 are shown, the left end of the conjugate camshaft 2 is rotatably supported on the front upper part of the aforementioned left support wall plate 12, the right end of the conjugate camshaft 2 is rotatably supported on the front upper part of the aforementioned right support wall plate 13, and a conjugate cam 21 is fixed in the middle of the conjugate camshaft 2, the conjugate cam 21 has a conjugate cam first flange i 211 and a conjugate cam second flange ii 212, a harness arm shaft left head 32 of the harness arm shaft 3 is supported on the rear upper part of the left support wall plate 12, and a harness arm shaft right head 33 of the harness arm shaft 3 is supported on the rear upper part of the right support wall plate 13, harness arms 31 equal in number to the number of the conjugate cams 21 and corresponding in position to the conjugate cams 21 are rotatably provided in the middle of the harness arm shaft 3, a first roller i 311 is fixed on the left side of the harness arm 31 and at a position corresponding to the aforementioned conjugate cam first flange i 211, and a second roller ii 312 is fixed on the right side of the lifting heddle arm 31 and at a position corresponding to the aforementioned conjugate cam second rim ii 212, the first roller i 311 is in contact with the conjugate cam first rim i 211, and the second roller ii 312 is in contact with the conjugate cam second rim ii 212.

The technical key points of the technical scheme provided by the utility model are as follows: still include a lifting arm axle adjustment mechanism 4 in the structural system of preceding dobby, set up a fixed cover cooperation spindle nose and lean out abdicating hole 14 on the left wall body of aforementioned box 1 and in the position that corresponds to the left end of aforementioned lifting arm axle 3, aforementioned lifting arm axle 3 constitutes for eccentric shaft structure and has extended a fixed cover cooperation spindle nose 321 on the lifting arm axle left spindle nose 32 of this lifting arm axle 3, this fixed cover cooperation spindle nose 321 is through the aforesaid fixed cover cooperation spindle nose to lean out abdicating hole 14 and extend to the outside of the left wall body of aforementioned box 1, aforementioned lifting arm axle adjustment mechanism 4 is fixed with aforementioned fixed cover cooperation spindle nose 321 outside the left wall body of box 1.

The applicant needs to state that: in fig. 1, therefore, only one conjugate cam 21 is shown on the conjugate camshaft 2, i.e. in the middle of the conjugate camshaft 2, and correspondingly one lifting heddle arm 31 is shown on the lifting heddle arm shaft 3, i.e. in the middle of the lifting heddle arm shaft 3, in view of the fact that for the sake of clarity and ease of understanding the utility model, since in practice 14 to 32 conjugate cams 21 are usually mounted on the

conjugate camshaft

2 and 14 to 32 lifting heddle arms are mounted on the lifting heddle arm shaft 3, however 14

conjugate cams

21 and 14 lifting heddle arms 31 are selected by the utility model. In view of the foregoing, the present invention is not limited by the number of conjugate cams 21 and lifting heddle arms 31 shown in fig. 1.

A left supporting bearing cavity 121 of a conjugate camshaft is formed at the upper part of the front end of the left supporting wall plate 12, and a left shaft head supporting bearing cavity 122 of a lifting heald arm shaft is formed at the upper part of the rear end of the left supporting wall plate 12; a right supporting bearing cavity 131 of a conjugate camshaft is formed at the upper part of the front end of the right supporting wall plate 13, and a right shaft head supporting bearing cavity 132 of a lifting arm shaft is formed at the upper part of the rear end of the right supporting wall plate 13; the left end of the conjugate camshaft 2 is rotatably supported in the conjugate camshaft left support bearing chamber 121 by a conjugate camshaft left support bearing 22, and the right end of the conjugate camshaft 2 is rotatably supported in the conjugate camshaft right support bearing chamber 131 by a conjugate camshaft right support bearing 23; the harness arm shaft left stub 32 of the harness arm shaft 3 is supported in the harness arm shaft left stub support bearing cavity 122 by a harness arm shaft left stub support bearing 322, and the harness arm shaft right stub 33 of the harness arm shaft 3 is supported in the harness arm shaft right stub support bearing cavity 132 by a harness arm shaft right stub support bearing 331. During operation the lifting heddle arm shaft 3 is not rotatable, but the lifting heddle arm 31, which is arranged on the lifting heddle arm shaft 3 by means of a lifting heddle arm pivot bearing 313 (also referred to as "lifting heddle arm swing bearing"), is rotatable in order to allow the lifting heddle arm 31 to swing.

A conjugate camshaft left support bearing cap 123 for restricting the conjugate camshaft left support bearing 22 is fixed to the front end upper portion of the left support wall plate 12 at a position corresponding to the conjugate camshaft left support bearing 22 by a pair of first cap screws 1231, and a harness lift arm left support bearing cap 124 for restricting the harness lift arm left head support bearing 322 is fixed to the rear end upper portion of the left support wall plate 12 at a position corresponding to the harness lift arm left head support bearing 322 by a pair of second cap screws 1241; a conjugate camshaft right support bearing cap 133 for restricting the conjugate camshaft right support bearing 23 is fixed to the front end upper portion of the aforementioned right support wall plate 13 and at a position corresponding to the conjugate camshaft right support bearing 23 by a pair of third cap screws 1331, and a heald arm shaft right support bearing cap 134 for restricting the heald arm shaft right head support bearing 331 is fixed to the rear end upper portion of the right support wall plate 13 and at a position corresponding to the aforementioned heald arm shaft right head support bearing 331 by a pair of fourth cap screws 1341.

The first roller i 311 is fixed on the left side of the lifting heddle arm 31 by a set of first roller fixing screws i 3111, and the second roller ii 312 is fixed on the right side of the lifting heddle arm 31 by a set of second roller fixing screws ii 3121, the first roller rim i 3112 of the first roller i 311 is in contact with the conjugate cam first rim i 211, and the second roller rim ii 3122 of the second roller ii 312 is in contact with the conjugate cam second rim ii 212.

A left processing technical hole 15a is formed at the left side of the box body 1 and at the position corresponding to the left bearing cavity 121 of the conjugate camshaft, a right processing technical hole 15b is formed at the right side of the box body 1 and at the position corresponding to the right spindle nose bearing cavity 132 of the lifting arm shaft, after the box body 1 is processed, the left processing technical hole 15a and the right processing technical hole 15b are in a blocking state, namely, the left processing technical hole 15a and the right processing technical hole 15b are finally blocked, and the blocking mode can be blocked by adopting a sealing cover.

A power input shaft hole 16 is opened at the right end of the front side of the box body 1, and a power input shaft extending into the box body cavity 11 through the power input shaft hole 16 drives a worm gear device which is connected with the right end of the conjugate camshaft 2 in a transmission way and is also arranged in the box body cavity 11 to move the conjugate camshaft 2 (belonging to the prior art).

The conjugate cam 2 is integrally provided with conjugate cam fixed disks 24 (for example, 14) equal in number to the conjugate cams 21, conjugate cam bolt fixing holes 241 are opened in the conjugate cam fixed disks 24, conjugate cam bolt holes 213 are opened in the conjugate cams 21 at positions corresponding to the conjugate cam bolt fixing holes 241, and the conjugate cams 21 and the conjugate cam fixed disks 24 are fixed to each other by conjugate cam fixing bolts as fastening members at positions corresponding to the conjugate cam bolt holes 213 and the conjugate cam bolt fixing holes 241.

The centers of the fixed sleeve matching shaft head 321, the heald lifting arm shaft right shaft head 33 and the middle area three of the heald lifting arm shaft 3 of the heald lifting arm shaft left shaft head 32 of the heald lifting arm shaft 3 are non-concentric. More specifically, the three points, i.e. the three points, of the middle part of the heald arm shaft 3, the fixed sleeve engaging stub shaft 321 and the heald arm shaft right stub shaft 33 are not in the same line, and the fixed sleeve engaging stub shaft 321 and the heald arm shaft right stub shaft 33 are concentric with each other, i.e. both are in the same center line (which may be called "in the same line").

Continuing to refer to fig. 1, the aforementioned shaft adjusting mechanism 4 includes a handle seat 41, a handle 42, a tightening fixing sleeve 43 and a hoop 44, wherein one end of the handle 42 facing the handle seat 41 is fixed to the handle seat 41, the other end of the handle 42 is a snap end, the tightening fixing sleeve 43 is fixed to the center of the right side of the handle seat 41 and is sleeved on the aforementioned fixing sleeve fitting shaft head 321, the hoop 44 is clasped on the tightening fixing sleeve 43, and the tightening fixing sleeve 43 is tightly fitted with the fixing sleeve fitting shaft head 321 by the hoop 44.

A pair of tightening screw holes 411 spaced 180 ° apart from each other is formed in the handle base 41 around the circumference of the handle base 41, tightening screws 4111 are respectively disposed on the tightening screw holes 411, the right end surface of the tightening screw 4111 contacts with the left wall of the box body 1, tightening grooves 431 are disposed on the tightening fixing sleeves 43 at intervals, and a hoop clamping screw 441 is disposed on the hoop 44 at an opening of the hoop 44.

Referring to fig. 2 in conjunction with fig. 1, after the installation of the conjugate cam shaft 2 and the conjugate cam 21 thereon in the box body cavity 11 and the installation of the heald lifting arm shaft 3 and the heald lifting arm 31 in the box body cavity 11 are completed, the handle 42 can be operated as required, that is, as required, before the operation, the tightening of the tightening screw 4111 against the wall of the box body 1 can be released, the handle 42 drives the handle seat 41, the handle seat 41 drives the tightening fixing sleeve 43 on the right side thereof, the tightening fixing sleeve 43 is fixed to the fixing sleeve via the anchor ear 44 and the shaft head 321, so that the heald lifting arm shaft 3 is driven by the tightening fixing sleeve 43, and the heald lifting arm 31 with the first roller i 311 and the second roller ii 312 fixed thereto is installed on the heald lifting arm shaft 3, so that under the applied external force, the heald lifting arm shaft 3 rotates by a certain angle, so that the first roller i 311 and the second roller ii 312 respectively engage with the conjugate cam first rim i and the conjugate cam rim i of the conjugate cam 21 to form a conjugate cam i and a first rim i And the second flange II 212 of the conjugate cam are in good contact, namely, gapless contact is realized. After the adjustment is completed, the tightening screw 4111 is returned to a state of being tightened against the wall (outer wall) of the object. As can be seen from the foregoing, the entire harness arm adjustment mechanism 4 remains on the harness fitting stub shaft 321 for readjustment after a period of routine maintenance and/or use.

In conclusion, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the utility model task and truly realizes the technical effects of the applicant in the technical effect column.

Claims

1. A dobby with a function of adjusting a lifting heald arm comprises a box body (1), wherein a left supporting wall plate (12) and a right supporting wall plate (13) are formed in a box body cavity (11) of the box body (1); a conjugate camshaft (2) and a harness arm shaft (3), the left end of the conjugate camshaft (2) is rotatably supported on the upper part of the front end of the left supporting wall plate (12), the right end of the conjugate camshaft (2) is rotatably supported on the upper part of the front end of the right supporting wall plate (13), and a conjugate cam (21) is fixed on the middle part of the conjugate camshaft (2), the conjugate cam (21) has a conjugate cam first flange I (211) and a conjugate cam second flange II (212), the harness arm shaft left shaft head (32) of the harness arm shaft (3) is supported on the upper part of the rear end of the left supporting wall plate (12), the harness arm shaft right shaft head (33) of the harness arm shaft (3) is supported on the upper part of the rear end of the right supporting wall plate (13), harness arms (31) which are equal in number to the number of the conjugate cams (21) and correspond in position to the conjugate cams (21) are rotatably arranged on the middle part of the harness arm shaft (3), a first roller I (311) is fixed on the left side of the heald lifting arm (31) and at a position corresponding to the first flange I (211) of the conjugate cam, a second roller II (312) is fixed on the right side of the heald lifting arm (31) and at a position corresponding to the second flange II (212) of the conjugate cam, the first roller I (311) is in contact with the first flange I (211) of the conjugate cam, the second roller II (312) is in contact with the second flange II (212) of the conjugate cam, the heald lifting arm adjusting mechanism is characterized by further comprising a heald lifting arm shaft adjusting mechanism (4), a fixing sleeve matching shaft head protrusion yielding hole (14) is arranged on the left wall body of the box body (1) and at a position corresponding to the left end of the heald lifting arm shaft (3), the heald lifting arm shaft (3) is in an eccentric shaft structure, and a matching fixing sleeve matching shaft head (321) extends on the left shaft head (32) of the heald lifting arm shaft (3), this fixed cover cooperation spindle nose (321) is passed through fixed cover cooperation spindle nose is visited yielding hole (14) and is stretched outside the left wall of box (1), heald lifting arm axle adjustment mechanism (4) outside the left wall of box (1) with fixed cover cooperation spindle nose (321) are fixed.

2. The dobby loom having a function of adjusting the lifting arms as claimed in claim 1, characterized in that a common camshaft left support bearing cavity (121) is formed at the front upper end of said left support wall plate (12), and a lifting arm shaft left stub shaft support bearing cavity (122) is formed at the rear upper end of said left support wall plate (12); a conjugate camshaft right supporting bearing cavity (131) is formed at the upper part of the front end of the right supporting wall plate (13), and a heald lifting arm shaft right shaft head supporting bearing cavity (132) is formed at the upper part of the rear end of the right supporting wall plate (13); the left end of the conjugate camshaft (2) is rotatably supported in the conjugate camshaft left support bearing cavity (121) through a conjugate camshaft left support bearing (22), and the right end of the conjugate camshaft (2) is rotatably supported in the conjugate camshaft right support bearing cavity (131) through a conjugate camshaft right support bearing (23); the heald lifting arm shaft left shaft head (32) of the heald lifting arm shaft (3) is supported through a heald lifting arm shaft left shaft head supporting bearing (322) in the heald lifting arm shaft left shaft head supporting bearing cavity (122), and the heald lifting arm shaft right shaft head (33) of the heald lifting arm shaft (3) is supported through a heald lifting arm shaft right shaft head supporting bearing (331) in the heald lifting arm shaft right shaft head supporting bearing cavity (132).

3. The dobby loom having a function of adjusting the heald lifting arm according to claim 2, wherein a conjugate camshaft left support bearing cap (123) for defining the conjugate camshaft left support bearing (22) is fixed to an upper front end of said left support wall plate (12) and at a position corresponding to said conjugate camshaft left support bearing (22), and a heald lifting arm shaft left support bearing cap (124) for defining the heald lifting arm shaft left head support bearing (322) is fixed to an upper rear end of the left support wall plate (12) and at a position corresponding to said heald lifting arm shaft left head support bearing (322); a conjugate camshaft right support bearing cover (133) for defining the conjugate camshaft right support bearing (23) is fixed at the front end upper portion of the right support wall plate (13) and at a position corresponding to the conjugate camshaft right support bearing (23), and a harness lift arm shaft right support bearing cover (134) for defining the harness lift arm shaft right head support bearing (331) is fixed at the rear end upper portion of the right support wall plate (13) and at a position corresponding to the harness lift arm shaft right head support bearing (331).

4. The dobby with adjusting function to the lifting heddle arm according to claim 1, characterized in that the first roller i (311) is fixed to the left side of the lifting heddle arm (31) by a set of first roller fixing screws i (3111) and the second roller ii (312) is fixed to the right side of the lifting heddle arm (31) by a set of second roller fixing screws ii (3121), the first roller rim i (3112) of the first roller i (311) being in contact with the conjugate cam first rim i (211) and the second roller rim ii (3122) of the second roller ii (312) being in contact with the conjugate cam second rim ii (212).

5. Dobby with adjusting function for the lifting heddle arm according to claim 2, characterised in that a left machining aperture (15a) is formed at the left side of the box (1) and at the position corresponding to the conjugated camshaft left bearing housing (121), and a right machining aperture (15b) is formed at the right side of the box (1) and at the position corresponding to the lifting heddle arm shaft right stub bearing housing (132), the left machining aperture (15a) and the right machining aperture (15b) being in a blocked state after the machining of the box (1) is completed.

6. The dobby with the function of adjusting the lifting arms as claimed in claim 1, characterized in that a power input shaft hole (16) is provided at the right end of the front side of the box body (1), and the conjugate camshaft (2) is moved by a power input shaft extending into the box body cavity (11) through the power input shaft hole (16) to drive a worm gear device which is connected with the right end of the conjugate camshaft (2) and is also arranged in the box body cavity (11).

7. The dobby with the function of adjusting the heald lifting arms according to claim 1, wherein conjugate cam fixing disks (24) equal in number to the conjugate cams (21) are integrally formed on the conjugate cam shaft (2), conjugate cam bolt fixing holes (241) are opened in the conjugate cam fixing disks (24), conjugate cam bolt holes (213) are opened in the conjugate cams (21) at positions corresponding to the conjugate cam bolt fixing holes (241), and the conjugate cams (21) and the conjugate cam fixing disks (24) are fixed by conjugate cam fixing bolts as fastening members at positions corresponding to the conjugate cam bolt holes (213) and the conjugate cam bolt fixing holes (241).

8. Dobby with adjustment function to the lifting heddle arms in accordance with claim 1 characterised by that the fixing sleeves of the lifting heddle arm shaft left head (32) of the lifting heddle arm shaft (3) cooperate with the head (321), the lifting heddle arm shaft right head (33) and the centre of the middle area of the lifting heddle arm shaft (3) being non-concentric.

9. The dobby loom with the function of adjusting the heald lifting arm according to claim 1, wherein the heald lifting arm shaft adjusting mechanism (4) comprises a handle seat (41), a handle (42), a tension fixing sleeve (43) and a hoop (44), one end of the handle (42) facing the handle seat (41) is fixed with the handle seat (41), the other end of the handle (42) is a pressing end, the tension fixing sleeve (43) is fixed at the center of the right side of the handle seat (41) and is sleeved on the fixing sleeve matching shaft head (321), the hoop (44) is clasped on the tension fixing sleeve (43), and the tension fixing sleeve (43) is tightly matched with the fixing sleeve matching shaft head (321) by the hoop (44).

10. The dobby loom with the adjusting function of the lifting heald arm according to claim 9, wherein a pair of jacking screw holes (411) are formed on the handle seat (41) and are spaced from each other by 180 degrees around the circumference of the handle seat (41), each jacking screw (4111) is provided on the pair of jacking screw holes (411), the right end face of the jacking screw (4111) is in contact with the left wall body of the box body (1), the tension fixing sleeves (43) are provided with tension grooves (431) at intervals, and a hoop clamping screw (441) is provided on the hoop (44) and at the opening part of the hoop (44).