Capsule forming drum and forming machine

文档序号:1869822 发布日期:2021-11-23 浏览:20次 中文

阅读说明:本技术 胶囊成型鼓及成型机 (Capsule forming drum and forming machine ) 是由 官炳政 高新腾 俞一航 张继锋 赵军 赵宪文 胡勐 于 2021-09-18 设计创作,主要内容包括:本发明提供了一种胶囊成型鼓及成型机,胶囊成型鼓包括主轴组件和两个贴合装置,两个贴合装置相对可移动地设置在主轴组件上,胎体以夹紧或释放胎体;贴合装置包括:滑动架,滑动架可移动地设置在主轴组件上,以沿主轴组件的轴向方向移动;反包胶囊,反包胶囊设置在滑动架上,以用于将胶料贴合到胎体的胎侧;助推组件,助推组件可移动地设置在反包胶囊远离胎体的一侧的滑动架上,以在反包胶囊膨胀后推动反包胶囊与胎体贴合。本发明的胶囊成型鼓解决了现有技术中的胶囊成型鼓使用成本高的问题。(The invention provides a capsule forming drum and a forming machine, wherein the capsule forming drum comprises a main shaft assembly and two attaching devices, the two attaching devices are arranged on the main shaft assembly in a relatively movable manner, and a tire body is used for clamping or releasing the tire body; the laminating device includes: a carriage movably disposed on the main shaft assembly to move in an axial direction of the main shaft assembly; the turning-up capsule is arranged on the sliding frame and used for attaching the rubber material to the side wall of the tire body; the boosting assembly is movably arranged on the sliding frame at one side, far away from the tire body, of the turn-up bladder so as to push the turn-up bladder to be attached to the tire body after the turn-up bladder expands. The capsule forming drum solves the problem that the capsule forming drum in the prior art is high in use cost.)

1. A capsule building drum, comprising:

a spindle assembly (10);

two applying devices which are arranged on the main shaft assembly (10) in a relatively movable manner, and a tire body (80) is used for clamping or releasing the tire body (80);

the attaching device includes:

a carriage movably provided on the spindle assembly (10) to move in an axial direction of the spindle assembly (10);

a turn-up bladder (20), the turn-up bladder (20) being disposed on the carriage for applying a sizing to a sidewall of a carcass (80);

the boosting assembly (30) is movably arranged on the sliding frame on one side, away from the tire body (80), of the turn-up bladder (20), so that the turn-up bladder (20) is pushed to be attached to the tire body (80) after the turn-up bladder (20) is expanded.

2. Capsule building drum according to claim 1, wherein the drum comprises a first drive assembly (40), the first drive assembly (40) being in driving connection with the two lamination devices, respectively, for driving the two lamination devices to move closer to or away from each other, wherein the first drive assembly (40) comprises:

a first lead screw (41);

two sliding sleeve subassemblies (42), two sliding sleeve subassemblies (42) respectively with first lead screw (41) drive connection to move near each other or keep away from each other under the drive of first lead screw (41), wherein, two laminating device one-to-one sets up two on the sliding sleeve subassembly (42).

3. Capsule building drum according to claim 1, further comprising a second drive assembly (50), the second drive assembly (50) being in driving connection with the boosting assemblies (30) of the two attaching means, respectively, for simultaneously driving the two boosting assemblies (30) in movement, wherein the boosting assemblies (30) comprise:

the turning disc (31) is rotatably arranged relative to the turn-up capsule (20), wherein the second driving assembly (50) is in driving connection with the turning disc (31) so as to drive the turn-up capsule (20) to move by driving the turning disc (31) to rotate.

4. Capsule building drum according to claim 3, wherein the second drive assembly (50) comprises a second lead screw (51), the second lead screws (51) being in driving connection with two of the boosting assemblies (30), respectively, the boosting assemblies (30) further comprising:

the first connecting rod mechanism (32) is in driving connection with the second lead screw (51) through a lead screw nut, and the first connecting rod mechanism (32) is further in driving connection with the turnover disc (31) so as to drive the turnover disc (31) to rotate under the driving of the second lead screw (51).

5. The capsule building drum as claimed in claim 1, further comprising:

a locking device (60), the locking device (60) being arranged on the spindle assembly (10) for locking a carcass (80).

6. Capsule building drum according to claim 5, wherein the locking means (60) comprise:

a third drive assembly disposed on the spindle assembly (10);

the two locking blocks (61) are arranged on the main shaft assembly (10) at intervals, the third driving assembly is in driving connection with the two locking blocks (61) respectively, and the two locking blocks (61) are driven to clamp the tire body (80) at the same time.

7. Capsule building drum according to claim 6, wherein the third drive assembly comprises a drive cylinder and a second linkage (62), the drive cylinder being connected to the locking block (61) via the second linkage (62) for driving the locking block (61) to move up and down, wherein a locking groove is provided on the locking block (61), and the third drive assembly drives the locking block (61) to move up so that the locking groove abuts against a bead (81) of the carcass (80) for fixing the carcass (80).

8. Capsule building drum according to claim 5, wherein the capsule building drum further comprises:

capsule clamping ring (75), capsule clamping ring (75) detachably sets up on spindle unit (10), turn-up capsule (20) pass through capsule clamping ring (75) are fixed on spindle unit (10).

9. Machine comprising a capsule building drum, characterized in that it is a capsule building drum according to any one of claims 1 to 8.

10. The molding machine of claim 9, further comprising:

and the compression roller device is arranged at the bottom of the capsule forming drum so as to press the rubber material onto the tire body.

Technical Field

The invention relates to the technical field of manufacturing of forming drums, in particular to a capsule forming drum and a forming machine.

Background

The capsule forming drum is a core component on an all-steel and off-highway forming machine, the working process comprises the procedures of rubber material transfer, flattening and shaping, capsule turn-up forming and the like, during specific work, when the rubber material is transferred, a tire body composite part is clamped by a tire body cylinder transfer ring and then moved to a forming drum shaping position, a belt layer assembly is clamped by a belt layer transfer ring and transferred to the forming drum shaping position, and the rubber material transfer is completed; sizing material is preset in place and then is subjected to flat width sizing, and the method comprises the following steps: locking the tire bead, leveling and shaping, and then performing capsule turn-up molding, wherein the capsule turn-up molding comprises the following steps: and finally, the pressing roller assembly rolls the tire tread and the tire side to complete the molding of the tire body.

Above-mentioned capsule forming drum needs two capsules collaborative work just can bend into the laminating of side wall sizing material, and the capsule has the problem that life is low and be difficult to the dismouting, and consequently the more the capsule can cause forming drum's cost higher, and the time greatly increased that dismouting capsule consumed has reduced forming drum's work efficiency.

Disclosure of Invention

The invention mainly aims to provide a capsule forming drum and a forming machine, which aim to solve the problem that the capsule forming drum in the prior art is high in use cost.

In order to achieve the above object, according to one aspect of the present invention, there is provided a capsule forming drum comprising: the tire body clamping device comprises a main shaft assembly and two attaching devices, wherein the two attaching devices are arranged on the main shaft assembly in a relatively movable mode, and the tire body is used for clamping or releasing the tire body; the laminating device includes: a carriage movably disposed on the main shaft assembly to move in an axial direction of the main shaft assembly; the turning-up capsule is arranged on the sliding frame and used for attaching the rubber material to the side wall of the tire body; the boosting assembly is movably arranged on the sliding frame at one side, far away from the tire body, of the turn-up bladder so as to push the turn-up bladder to be attached to the tire body after the turn-up bladder expands.

Further, the capsule forming drum includes a first driving assembly, and the first driving assembly is respectively connected with two laminating devices in a driving manner so as to drive the two laminating devices to move close to or away from each other, wherein the first driving assembly includes: a first lead screw; two sliding sleeve subassemblies, two sliding sleeve subassemblies are connected with first lead screw drive respectively to be close to each other or move away from ground under the drive of first lead screw, wherein, two laminating devices set up on two sliding sleeve subassemblies one-to-one.

Further, the capsule forming drum still includes second drive assembly, and second drive assembly is connected with the boosting subassembly drive of two laminating devices respectively to two boosting subassemblies of simultaneous drive remove, wherein, the boosting subassembly includes: the turning disc is rotatably arranged relative to the turn-up capsule, and the second driving assembly is in driving connection with the turning disc to drive the turn-up capsule to move by driving the turning disc to rotate.

Further, the second drive assembly includes the second lead screw, and the second lead screw is connected with two boosting subassembly drives respectively, and the boosting subassembly still includes: the first connecting rod mechanism is in driving connection with the second lead screw through the lead screw nut and is also in driving connection with the turnover disc so as to drive the turnover disc to rotate under the driving of the second lead screw.

Further, the capsule building drum further comprises: and the locking device is arranged on the main shaft assembly and used for locking the tire body.

Further, the locking device includes: the third driving assembly is arranged on the main shaft assembly; the two locking blocks are arranged on the main shaft assembly at intervals, and the third driving assembly is in driving connection with the two locking blocks respectively so as to drive the two locking blocks to clamp the tire body simultaneously.

Further, the third driving assembly comprises a driving cylinder and a second connecting rod mechanism, the driving cylinder is connected with the locking block through the second connecting rod mechanism to drive the locking block to move up and down, a locking groove is formed in the locking block, and the third driving assembly drives the locking block to ascend so that the locking groove abuts against the tire bead of the tire body to fix the tire body.

Further, the capsule building drum further comprises: the capsule clamping ring is detachably arranged on the main shaft assembly, and the turn-up capsule is fixed on the main shaft assembly through the capsule clamping ring.

According to another aspect of the invention, there is provided a molding machine comprising a capsule building drum as described above.

Further, the molding machine further includes: and the compression roller device is arranged at the bottom of the capsule forming drum so as to press the rubber material onto the tire body.

The capsule forming drum adopting the technical scheme of the invention is mainly applied to a forming machine for manufacturing tires, can quickly and efficiently paste rubber materials on a tire body, meanwhile, the capsule forming drum is provided with a boosting assembly to push a turn-up capsule to be pasted towards the tire body, the boosting assembly can provide different degrees of thrust for the turn-up capsule, so that the rubber materials are better combined with the tire body, meanwhile, the use of the capsule is reduced, the cost is saved, and the time for assembling and disassembling the capsule is saved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

figure 1 shows a schematic view of an embodiment of a capsule building drum according to the invention in an initial state;

FIG. 2 shows a schematic view of an embodiment of the bladder building drum of the present invention in a carcass-fixed state;

figure 3 shows a schematic view of an embodiment of the capsule building drum of the invention in a turn-up state.

Wherein the figures include the following reference numerals:

10. a spindle assembly; 20. turning and packaging the capsules; 30. a boost assembly; 31. turning over the turntable; 32. a first link mechanism; 40. a first drive assembly; 41. a first lead screw; 42. a sliding sleeve assembly; 50. a second drive assembly; 51. a second lead screw; 60. a locking device; 61. a locking block; 62. a second link mechanism; 71. a flat width slider; 72. a boost slider; 74. a quick discharge valve; 75. pressing a ring by the capsule; 80. a carcass; 81. and a bead.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The invention provides a capsule forming drum, a forming machine and a forming method, aiming at solving the problem that the capsule forming drum in the prior art is high in use cost.

Referring to fig. 1 to 3, a capsule forming drum includes a spindle assembly 10 and two applying devices, the two applying devices are relatively movably disposed on the spindle assembly 10, and a tire body 80 clamps or releases the tire body 80; the laminating device includes: a sliding frame movably disposed on the spindle assembly 10 to move in an axial direction of the spindle assembly 10, a turn-up capsule 20, and a boosting assembly 30; the turn-up bladder 20 is arranged on the carriage for applying the rubber compound to the sidewalls of the carcass 80; the boosting assembly 30 is movably arranged on the sliding frame at one side of the turn-up bladder 20 far away from the tire body 80 so as to push the turn-up bladder 20 to be attached to the tire body 80 after the turn-up bladder 20 is expanded.

The capsule forming drum is mainly applied to a forming machine for manufacturing tires, can quickly and efficiently paste rubber materials on a tire body 80, meanwhile, the capsule forming drum is provided with a boosting assembly 30 to push a turn-up capsule 20 to be pasted towards the tire body 80, the boosting assembly 30 can provide different degrees of thrust for the turn-up capsule 20, so that the rubber materials are better combined with the tire body 80, the use of the capsule is reduced, the cost is saved, and the time for assembling and disassembling the capsule is saved.

The capsule forming drum comprises a first driving assembly 40, wherein the first driving assembly 40 is in driving connection with two attaching devices respectively to drive the two attaching devices to move close to or away from each other, the first driving assembly 40 comprises a first lead screw 41 and two sliding sleeve assemblies 42, the two sliding sleeve assemblies 42 are in driving connection with the first lead screw 41 respectively to move close to or away from each other under the driving of the first lead screw 41, and the two attaching devices are arranged on the two sliding sleeve assemblies 42 in a one-to-one correspondence manner.

The first driving assembly 40 of the invention adopts a ball screw to drive two attaching devices to move, a left-handed thread and a right-handed thread are arranged on the ball screw, the two attaching devices are respectively matched with the left-handed thread and the right-handed thread, the first driving assembly 40 also comprises a servo motor, and the servo motor drives the ball screw to rotate to drive a sliding sleeve assembly 42 connected with a screw nut to move, so that the attaching devices move left and right.

The capsule forming drum further comprises a second driving assembly 50, the second driving assembly 50 is in driving connection with the boosting assemblies 30 of the two attaching devices respectively to drive the two boosting assemblies 30 to move simultaneously, wherein the boosting assemblies 30 comprise: the overturning plate 31 is rotatably arranged relative to the turn-up capsule 20, wherein the second driving assembly 50 is in driving connection with the overturning plate 31 so as to drive the turn-up plate 31 to rotate to push the turn-up capsule 20 to move. The second driving assembly 50 comprises a second lead screw 51, the second lead screw 51 is respectively in driving connection with the two boosting assemblies 30, the boosting assemblies 30 further comprise a first connecting rod mechanism 32, the first connecting rod mechanism 32 is in driving connection with the second lead screw 51 through a lead screw nut, and the first connecting rod mechanism 32 is further in driving connection with the turnover disc 31 so as to drive the turnover disc 31 to rotate under the driving of the second lead screw 51.

The capsule forming drum is provided with two lead screws, a second lead screw 51 in a second driving assembly 50 is used for driving two gluing device inward turning rotary discs 31 to rotate, specifically, the second lead screw 51 is also provided with positive and negative threads, a boosting slider 72 is matched with the second lead screw 51 through a lead screw nut, a first connecting rod mechanism 32 is connected with the boosting slider 72, the boosting slider 72 moves to drive a connecting rod of the first connecting rod mechanism 32 to rotate, so that the rotation of the turning rotary discs 31 is completed, specifically, the turning rotary discs 31 rotate towards the turn-up capsules 20 to push the turn-up capsules 20 to press rubber materials onto tire bodies 80, the turning rotary discs 31 are a plurality of arc-shaped plates, the first connecting rod mechanism 32 comprises a plurality of connecting rods, and the connecting rods respectively drive the arc-shaped plates to rotate.

The capsule building drum further comprises: and a locking device 60, wherein the locking device 60 is arranged on the main shaft assembly 10 and used for locking the tire body 80. The locking device 60 comprises a third driving assembly and two locking blocks 61, wherein the third driving assembly is arranged on the main shaft assembly 10; the two locking blocks 61 are arranged on the main shaft assembly 10 at intervals, wherein the third driving assembly is respectively in driving connection with the two locking blocks 61 so as to simultaneously drive the two locking blocks 61 to clamp the tire body 80. The third driving assembly comprises a driving cylinder and a second link mechanism 62, the driving cylinder is connected with the locking block 61 through the second link mechanism 62 to drive the locking block 61 to move up and down, wherein a locking groove is formed in the locking block 61, and the third driving assembly drives the locking block 61 to ascend so that the locking groove abuts against the tire bead 81 of the tire body 80 to fix the tire body 80.

In the embodiment, in order to ensure that the rubber material is tightly attached to the tire body 80, the locking device 60 is arranged to fix the tire body 80 so as to ensure that the tire body 80 does not shake in the process of attaching the rubber material, specifically, the tire bead 81 on the tire body 80 is fixed through the locking blocks 61, the two locking blocks 61 are arranged on the main shaft of the main shaft assembly 10, when the tire body 80 is placed on the main shaft, the locking blocks 61 are lifted along the radial direction of the main shaft and abut against the tire bead 81 so as to fix the tire body 80, the locking blocks 61 are multiple, and the locking blocks 61 are distributed at intervals along the circumferential direction of the main shaft so as to position the tire body 80 by abutting against different positions of the tire bead 81.

The capsule forming drum further comprises a capsule pressing ring 75, the capsule pressing ring 75 is detachably arranged on the spindle assembly 10, and the turn-up capsules 20 are fixed on the spindle assembly 10 through the capsule pressing ring 75.

In this embodiment, the capsule pressing ring 75 is provided for facilitating the disassembly of the turn-up capsule 20, the capsule pressing ring 75 is mounted on the spindle assembly 10 through a screw, and during disassembly, the capsule pressing ring 75 and the spindle assembly 10 are separated to complete disassembly, so that the assembly time is saved.

A molding machine comprises a capsule molding drum, wherein the capsule molding drum is the capsule molding drum. The machine also includes a press roller arrangement disposed at the bottom of the bladder building drum to press the rubber material onto the carcass 80.

The invention also provides a forming machine with the capsule forming drum, which is used for forming a tire, the capsule forming drum is used for winding rubber materials on the forming drum, the motor drives the forming drum to rotate, the rubber materials are pressed on the tire body 80 on the forming drum by the compression roller device, in addition, the compression roller device can also be arranged at one side of the forming drum, and the compression roller device comprises a plurality of compression rollers for respectively rolling the tire surface and the tire side of the tire body 80.

The process of shaping the carcass 80 by the bladder shaping drum of the present invention is as follows:

first, the carcass 80 is fixed: sleeving the tire body 80 on the main shaft, and fixing the tire body 80 by the locking device 60 through a locking tire bead 81;

then, inflating the turn-up bladders 20 on both sides of the tire body 80 to make the two turn-up bladders 20 fit with both sides of the tire body 80; then the boosting assembly 30 pushes the turn-up bladder 20 to be pressed on one side of the carcass 80, so that the rubber on the turn-up bladder 20 is tightly attached to one side of the carcass 80; finally, the two turn-up bladders 20 are moved in opposite directions to release the carcass 80.

As shown in figure 1, the invention provides a mechanical boosting type capsule forming drum with a novel structure, which adopts a spindle double-ball screw structure, wherein a first screw 41, a second screw 51, a flat width slider 71, a boosting slider 72 and a sliding sleeve assembly 42 provide capsule flattening and boosting capsule forming transmission power for forming the forming drum, and air channel assemblies, a spindle assembly 10, a driving cylinder, a turn-up capsule 20 and the like are adopted to provide pneumatic power for a lock bead 81 and a turn-up portion.

The main process steps in the specific use are as follows:

after the belt layer rubber material is preset in place, the machine box inflates the air cylinder of the forming drum under the action of the air path of the main machine box, the angle of the second connecting rod mechanism 62 is increased, and the locking block 61 raises the locking tire bead 81.

Under the servo effect of the mainframe box, power is transmitted to the first lead screw 41 and the flat-width slider 71 to push the sliding sleeve assembly 42 to move towards the center of the drum, the laminating devices are arranged in a bilateral symmetry manner, the center of the forming drum is inflated under the effect of the air passage of the mainframe box, and the middle of the rubber material is bulged and formed.

Under the action of the air passage of the main case, the turn-up bladder 20 of the forming drum is inflated, the turn-up carcass 80 composite member reaches the side surface of the carcass 80, when the inflation pressure of the turn-up bladder 20 is maximum, the carcass 80 composite member cannot be separated from the turn-up bladder 20, at this time, under the servo action of the main case, power is transmitted to the second lead screw 51 and the boosting slider 72 to push the first connecting rod mechanism 32 to continue boosting the turn-up bladder 20 to extrude the rubber material of the carcass 80 composite member toward the center of the drum, so that the rubber material of the carcass 80 composite member is separated from the turn-up bladder 20, and the rubber material of the turn-up carcass 80 composite member is completed.

The molding machine of the invention also comprises a compression roller device, the main shaft rotates under the action of the main case, and the compression roller device rolls the tire tread and the tire side of the tire body 80.

The first link mechanism 32 drives the second lead screw 51 to reversely move outwards and reset under the action of the mainframe box boosting servo, and simultaneously opens the quick exhaust valve 74 to deflate and reset the turn-up capsule 20 under the action of the mainframe box air passage.

The first lead screw 41 reversely rotates to push the two sliding sleeve assemblies 42 to move away from each other, and the initial position return is completed.

The forming machine is also provided with a tire unloader, after the tire unloader device grabs the tire surface, the machine case inflates the forming air cylinder assembly under the action of the air passage of the main machine case, the angle of the second connecting rod mechanism 62 is reduced, the locking block 61 falls back and is separated from the tire bead 81.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the capsule forming drum disclosed by the invention adopts an internal and external mechanical boosting arrangement structure, the condition that no indentation exists in the turning-up of the side-wall capsules is reserved, meanwhile, the servo boosting speed is high, and the working efficiency of the turning-up of the capsules is greatly improved.

The capsule forming drum can rapidly disassemble the capsule pressing ring 75 for capsule replacement by lengthening the screw, and the turn-up capsule 20 adopts a large turn-up structure, so that the disassembly is convenient, and the operation and maintenance cost is reduced.

The capsule cost is too high, and the forming drum of the invention uses less capsules when in use, thereby bringing great economic benefits to production enterprises.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

11页详细技术资料下载
上一篇:一种医用注射器针头装配设备
下一篇:胎面缠绕中橡胶胶条尺寸精确控制系统和方法

网友询问留言

已有0条留言

还没有人留言评论。精彩留言会获得点赞!

精彩留言,会给你点赞!

技术分类