阅读说明：本技术 一种喷气织机用后梁轴 (Back beam shaft for air jet loom ) 是由 胡伟华 代爱明 王海花 于 2021-07-06 设计创作，主要内容包括：本发明公开了一种喷气织机用后梁轴,包括后梁轴,还包括关于隔套中心对称分布的第一滚针轴承和第二滚针轴承,所述后梁轴的外壁居中设置有凸起部,所述凸起部上设置有膨胀芯管组件,所述膨胀芯管组件用于使隔套、第一滚针轴承和第二滚针轴承固定于所述后梁轴上。该发明提供的喷气织机用后梁轴,在原有的喷气织机用后梁轴进行改进,增加两组滚针轴承,利用膨胀芯管组件在液态氮的浸泡之后进行组装,极大的方便了对两组滚针轴承进行安装工作,使得后梁轴改进的安装更加简单、方便。通过增加两组滚针轴承,减少后梁轴的摩擦,提高工艺准度,提高产品质量和效率,同时杜绝安全隐患。(The invention discloses a back beam shaft for an air jet loom, which comprises the back beam shaft, a first needle bearing and a second needle bearing, wherein the first needle bearing and the second needle bearing are symmetrically distributed about the center of a spacer bush, a bulge is arranged in the middle of the outer wall of the back beam shaft, an expansion core pipe assembly is arranged on the bulge, and the expansion core pipe assembly is used for fixing the spacer bush, the first needle bearing and the second needle bearing on the back beam shaft. According to the back beam shaft for the air jet loom, the original back beam shaft for the air jet loom is improved, the two groups of needle roller bearings are added, the expansion core pipe assembly is used for assembling after soaking of liquid nitrogen, the two groups of needle roller bearings are greatly convenient to install, and the improved installation of the back beam shaft is simpler and more convenient. Through increasing two sets of bearing, reduce the friction of back beam axle, improve technology accuracy, improve product quality and efficiency, stop the potential safety hazard simultaneously.)

1. The utility model provides a back beam axle for air jet loom, includes back beam axle (1), its characterized in that still includes first bearing (3) and second bearing (4) about spacer (2) central symmetry distribution, the outer wall of back beam axle (1) is provided with bellying (8) in the middle, be provided with expansion core pipe subassembly (5) on bellying (8), expansion core pipe subassembly (5) are used for making spacer (2), first bearing (3) and second bearing (4) be fixed in on back beam axle (1).

2. A back rest shaft for an air jet loom according to claim 1, wherein one end of the boss portion (8) is provided with a tenon bushing (6), an inner wall of the tenon bushing (6) is spaced from an outer wall of the boss portion (8) by a predetermined distance to form a nip (61), and one end of the core tube assembly (5) is inserted into the nip (61).

3. The back rest axle for the air jet loom of claim 1, characterized in that, the guide rail groove (41) that is the circumference array distribution is seted up to the outer wall of bellying (8), inflation core tube subassembly (5) includes left side lamella (51) and right side lamella (52), left side lamella (51) and right side lamella (52) cover in the outer wall of bellying (8), and inside all is provided with the lug key (53) of card income in guide rail groove (41).

4. The back rest shaft for the air jet loom of claim 1, characterized in that the outer wall of the opposite side of the left flap plate (51) and the right flap plate (52) is provided with a vein (55) in the center, and the spacer bush (2) is inserted from one end of the back rest shaft (1) opposite to the tenon sleeve (6) and is in threaded connection with the vein (55) to be matched with the tenon sleeve (6) to clamp the inner ring of the first needle bearing (3).

5. A back rest axle for an air jet loom according to claim 1, characterized in that a diamond shim (7) secured against the boss (8) is screwed onto the back rest axle (1), the diamond shim (7) being adapted to engage the spacer (2) to clamp the inner race of the second needle bearing (4).

6. A method of assembling a back beam axle for an air jet loom according to claims 1 to 5, characterized by the steps of:

s1, sleeving a boss (8) at a preset position of a back beam shaft (1), and then welding;

s2, soaking the left flap plate (51), the right flap plate (52), the spacer bush (2) and the diamond gasket (7) in liquid nitrogen for 5 s;

s3, inserting the left flap plate (51) and the right flap plate (52) from one end, opposite to one end of the tenon sleeve (6), of the bulge (8), and inserting the left flap plate (51) and the right flap plate (52) into the clamping cavity (61);

s4, inserting the first needle bearing (3) into the outer walls of the left flap plate (51) and the right flap plate (52), then assembling the spacer bush (2) on the vein strip (55) in a threaded mode, and rotating 3.5 threads;

s5, inserting a second needle bearing (4) into the outer walls of the left flap plate (51) and the right flap plate (52), and then screwing a diamond gasket (7) on the back beam shaft (1) and stopping the assembly under the blocking of the bulge (8).

Technical Field

The invention relates to a back beam shaft for an air jet loom.

Background

The air jet loom is the one with the highest speed, and has reasonable weft insertion mode, high weft insertion rate and simple and safe operation.

According to the patent number CN201910788158.2, a back beam shaft for an air jet loom is disclosed, which comprises two back beam brackets, wherein one opposite sides of the two back beam brackets are rotatably connected with a swinging plate through a rotating shaft; the two fixed beam bearings are embedded at one opposite side of the two swinging plates; the fixed beam axle tube is fixedly sleeved on the inner rings of the two fixed beam bearings; the fixed beam is integrally formed on the surface of the fixed beam axle tube; the two swing beam bearings are embedded at one opposite sides of the two swing plates and are positioned above the fixed beam bearing. According to the invention, the installation mode of the fixed beam shaft tube and the swing beam shaft tube is changed into the installation mode of the fixed beam bearing and the swing beam bearing, so that the friction of the rear beam shaft can be reduced, the service life of parts is prolonged, the process accuracy is improved, the product quality and efficiency are improved, and the potential safety hazard is avoided.

In the long-term use process of the air jet loom, a back beam shaft is easy to wear and generate heat, so that the back beam is unstable in movement, the process tension is inaccurate, the product quality and the efficiency are influenced, and certain fire safety hazards exist due to the fact that the back beam shaft is easy to wear and generate heat.

Disclosure of Invention

The invention aims to provide a back beam shaft for an air jet loom, which is used for reducing the friction of the back beam shaft, improving the process accuracy, improving the product quality and efficiency and simultaneously eliminating potential safety hazards.

In order to achieve the above purpose, the invention provides the following technical scheme: a back beam shaft for an air jet loom comprises a back beam shaft, a first needle roller bearing and a second needle roller bearing which are symmetrically distributed about the center of a spacer bush, wherein a boss is arranged in the middle of the outer wall of the back beam shaft, an expansion core pipe assembly is arranged on the boss, and the expansion core pipe assembly is used for fixing the spacer bush, the first needle roller bearing and the second needle roller bearing on the back beam shaft.

Preferably, one end of the boss is provided with a tenon sleeve, an inner wall of the tenon sleeve is spaced apart from an outer wall of the boss by a predetermined distance to form a cavity, and one end of the expanded core tube assembly is inserted into the cavity.

As preferred, the guide rail groove that is circumference array distribution is seted up to the outer wall of bellying, inflation core pipe subassembly includes left side lamella board and right side lamella board, left side lamella board and right side lamella board cover in the outer wall of bellying, and inside all is provided with the card and goes into the convex key in the guide rail groove.

Preferably, a vein strip is arranged in the middle of the outer wall of the opposite side of the left side flap plate and the right side flap plate, and the spacer bush is inserted from one end of the back beam shaft opposite to the tenon sleeve and is in threaded connection with the vein strip so as to be matched with the tenon sleeve to clamp the inner ring of the first needle bearing.

Preferably, a diamond gasket abutting against and fixed on the boss is connected to the rear beam shaft in a threaded manner, and the diamond gasket is used for being matched with the spacer to clamp the inner ring of the second needle bearing.

A method for assembling a back rest shaft for an air jet loom, the method comprising the steps of:

s1, sleeving the protruding part at the preset position of the back beam shaft, and then welding

S2, soaking the left flap plate, the right flap plate, the spacer bush and the diamond gasket in liquid nitrogen for 5 s;

s3, inserting the left flap plate and the right flap plate from one end of the bulge part opposite to the tenon sleeve, and inserting the left flap plate and the right flap plate into the clamping cavity;

s4, inserting a first needle bearing into the outer walls of the left valve plate and the right valve plate, assembling the spacer bush on the vein strip in a threaded mode, and rotating by 3.5 threads;

and S5, inserting a second needle bearing into the outer walls of the left flap plate and the right flap plate, and then assembling the diamond gasket on the back beam shaft in a threaded manner and stopping the assembly under the blocking of the bulge.

In the technical scheme, the back beam shaft for the air jet loom provided by the invention has the following beneficial effects: this scheme improves at original back beam axle for the air jet loom, increases two sets of bearing, utilizes the inflation core pipe subassembly to assemble after soaking of liquid nitrogen, very big having made things convenient for and has carried out installation work to two sets of bearing for back beam axle modified installation is simple more, convenient. Through increasing two sets of bearing, reduce the friction of back beam axle, improve technology accuracy, improve product quality and efficiency, stop the potential safety hazard simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic overall structure diagram provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an explosion view according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a back beam axle according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a cross-section provided in an embodiment of the present invention;

fig. 5 is a schematic view of an assembly structure of the back beam shaft and the expansion core tube assembly according to the embodiment of the present invention.

Description of reference numerals:

1. a rear beam axle; 2. a spacer sleeve; 3. a first needle bearing; 4. a second needle bearing; 41. a guide rail groove; 5. an expansion core tube assembly; 51. a left flap plate; 52. a right flap plate; 53. a convex key; 55. pulse bars; 6. tenon sleeve; 61. a clamp cavity; 7. a diamond pad; 8. a raised portion.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, a back beam shaft for an air jet loom includes a back beam shaft 1, and further includes a first needle bearing 3 and a second needle bearing 4 which are symmetrically distributed about a center of a spacer 2, a boss 8 is centrally provided on an outer wall of the back beam shaft 1, an expansion core tube assembly 5 is provided on the boss 8, and the expansion core tube assembly 5 is used for fixing the spacer 2, the first needle bearing 3 and the second needle bearing 4 on the back beam shaft 1.

Specifically, the embodiment provided by the invention is mainly improved aiming at the traditional back beam shaft, the back beam is positioned at the rearmost end of the weaving machine and provides equipment support for the production process of the weaving machine and the tension of the weaving machine, and during high-speed operation of the equipment, the back beam shaft 1 continuously moves, so that the friction force is large, the process is unstable due to abrasion of the back beam, potential safety hazards exist due to heat generation by friction, and the like. The solution provided by the invention is to add two groups of first needle bearings 3 and second needle bearings 4 to replace the traditional installation mode of two-end bearings so as to reduce friction force and avoid loss in the operation process. In addition, in order to reduce the technical difficulty, the construction period and the cost caused by the transformation, the expansion core tube assembly 5 and the boss 8 are matched to realize the installation and fixation of the first needle bearing 3 and the second needle bearing 4, so that the whole installation process is simple and rapid, and the period of the whole transformation is shortened.

In the embodiment provided by the invention, the original back beam shaft 1 for the air jet loom is improved, two groups of needle roller bearings are added, and the expansion core pipe assembly 5 is utilized to assemble after soaking in liquid nitrogen, so that the two groups of needle roller bearings are greatly convenient to install, and the improved installation of the back beam shaft 1 is simpler and more convenient. Through increasing two sets of bearing, reduce the friction of back beam axle, improve technology accuracy, improve product quality and efficiency, stop the potential safety hazard simultaneously.

As can be seen from fig. 3, in this embodiment, one end of the protruding portion 8 is provided with the tenon sleeve 6, the pipe diameter of the tenon sleeve 6 extends to the protruding portion 8, and the radius of the protruding portion 8 is smaller than that of the tenon sleeve 6, so that a space, i.e. a cavity 61, is formed between the tenon sleeve 6 and the protruding portion 8, and one end of the expansion core pipe assembly 5 mounted on the protruding portion 8 is inserted into the cavity 61 to cooperate with the diamond gasket 7 for interference fixation.

In the above scheme, as can be known from fig. 2 and 5, the expansion core tube assembly 5 includes the left flap plate 51 and the right flap plate 52, and the combination of the left flap plate 51 and the right flap plate 52 is a complete circular tube structure after being clamped on the outer wall of the protruding portion 8, and the insertion fit of the guide rail grooves 41 distributed in a circumferential array is provided through the convex keys 53 of the inner walls of the two flap plates and the outer wall of the protruding portion 8 to achieve the purpose of limiting, so that the left flap plate 51 and the right flap plate 52 are driven to rotate synchronously with the protruding portion 8. And after the installation, the connection relationship is stable and reliable.

Further, as can be seen from fig. 3 and 4, the outer walls of the left flap plate 51 and the right flap plate 52 are respectively provided with a raised vein bar 55, and the spacer 2 is inserted from one end of the back beam shaft 1 opposite to the tenon sleeve 6 and is in threaded connection with the vein bar 55 to cooperate with the tenon sleeve 6 to clamp the inner ring of the first needle bearing 3. Similarly, the second needle bearing 4 is mounted by means of the diamond gasket 7, the diamond gasket 7 is assembled on the back beam shaft 1 in a threaded mode and then stopped by the stop of the boss 8, and the inner ring of the second needle bearing 4 is clamped by the spacer 2.

In summary, the invention also provides an assembly method of the back beam shaft for the air jet loom, which comprises the following assembly steps:

s1, sleeving a boss 8 at a preset position of a back beam shaft 1, and then welding;

s2, soaking the left flap plate 51, the right flap plate 52, the spacer bush 2 and the diamond gasket 7 in liquid nitrogen for 5 s;

s3, inserting the left flap plate 51 and the right flap plate 52 from one end of the bulge 8 opposite to the tenon sleeve 6, and inserting the left flap plate 51 and the right flap plate 52 into the clamping cavity 61;

s4, inserting the first needle bearing 3 into the outer walls of the left flap plate 51 and the right flap plate 52, then assembling the spacer bush 2 on the vein strip 55 in a threaded manner, and rotating 3.5 threads;

and S5, inserting the second needle bearing 4 into the outer walls of the left flap plate 51 and the right flap plate 52, and then screwing the diamond gasket 7 on the back beam shaft 1 and stopping the same by being blocked by the bulge part 8.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.