Automatic change non-woven fabrics production line
阅读说明:本技术 一种自动化无纺布生产线 (Automatic change non-woven fabrics production line ) 是由 张伟冲 于 2020-07-29 设计创作,主要内容包括:本申请涉及一种自动化无纺布生产线,属于无纺布生产设备技术领域,其包括:设置在工作环境中的安装架;设置在安装架最高层的生产线入料部;与生产线入料部输出端相接、设置在安装架中层的生产线反应部;与生产线反应部输出端相接、设置在安装架底层的生产线收集部,生产线输入部包括有设置在安装架最高层的搅拌装置,生产线反应部包括有依次设置在安装架中层的挤出机、片式过滤器、计量泵以及成布机,搅拌装置的输出端与挤出机的输入端相连通设置。为了提高无纺布的成品质量,本申请提供一种自动化无纺布生产线,能够有效地对反应原料进行搅拌,使得经过挤出机挤出的过程原料质量得到提高,从而有效地提高无纺布的成品质量。(The application relates to an automatic change non-woven fabrics production line belongs to non-woven fabrics production facility technical field, and it includes: a mounting frame disposed in a work environment; the production line feeding part is arranged at the highest layer of the mounting rack; the production line reaction part is connected with the output end of the production line feeding part and arranged on the middle layer of the mounting rack; meet with production line reaction portion output, set up the production line collection portion at the mounting bracket bottom, production line input portion is including setting up the agitating unit at the mounting bracket highest level, and production line reaction portion is including setting gradually at the middle-level extruder of mounting bracket, chip filter, measuring pump and cloth forming machine, and agitating unit's output is linked together with the input of extruder and sets up. In order to improve the finished product quality of non-woven fabrics, this application provides an automatic non-woven fabrics production line, can stir reaction raw materials effectively for the process raw materials quality of extruding through the extruder obtains improving, thereby improves the finished product quality of non-woven fabrics effectively.)
1. An automated nonwoven fabric production line comprising: a mounting frame (1) arranged in a working environment; the production line feeding part is arranged at the highest layer of the mounting rack (1); the production line reaction part is connected with the output end of the production line feeding part and arranged at the middle layer of the mounting rack (1); the production line collecting part is connected with the output end of the production line reaction part and is arranged at the bottom layer of the mounting frame (1), and is characterized in that the production line input part comprises a stirring device arranged at the highest layer of the mounting frame (1), the production line reaction part comprises an extruder (31), a sheet type filter (32), a metering pump (33) and a cloth forming machine (34) which are sequentially arranged at the middle layer of the mounting frame (1), the output end of the stirring device is communicated with the input end of the extruder (31), the extruder (31) is sequentially communicated with the sheet type filter (32) and the metering pump (33) through a pipeline (36), and materials in a pipeline (36) and in a molten state are transmitted to the input end of the cloth forming machine (34) through the driving of the metering pump (33).
2. An automated non-woven fabric production line according to claim 1, wherein the stirring device comprises: the mixing barrel (21) is arranged on the highest layer of the mounting rack (1), the top of the mixing barrel is provided with an opening, and the bottom of the mixing barrel is provided with a through hole; the fixing frame (22) is arranged on the highest layer of the mounting frame (1) and is positioned in the circumferential direction of the material mixing barrel (21); and install mount (22) top, output insert mix first mixer (23) in storage bucket (21), wherein, mix storage bucket (21) circumference and be provided with a plurality of holding buckets (24), the output of holding bucket (24) with the open-top of mixing storage bucket (21) meets, mix storage bucket (21) bottom through opening and close of PLC control opening and with the input end switch-on of extruder (31), holding bucket (24) lateral wall is provided with and is used for sealing the closing member of holding bucket (24) output.
3. The automated nonwoven production line of claim 2, wherein said closure comprises: a material guide groove (241) arranged at the output end of the material bearing barrel (24); a discharge port (242) arranged on the side wall of the material bearing barrel (24); the slideways (243) are symmetrically fixed on two sides of the discharge hole (242); a slide shaft (244) connected in the slide way (243) in a sliding way; a closing plate (245) with a side wall fixed with one end of the sliding shaft (244) far away from the slideway (243); the mounting seat (246) is fixed on the side wall of the material bearing barrel (24) and positioned above the discharge hole (242); an air cylinder (247) rotatably connected to the base body (257) of the mounting base (246); and the connecting part is arranged at the output end of the air cylinder (247), wherein the air cylinder (247) is connected with the sealing plate (245) through the connecting part and drives the sealing plate (245) to open and close the discharge hole (242).
4. An automated non-woven fabric production line according to claim 3, wherein the connecting portion comprises: a mounting block (2471) disposed at an output end of the cylinder (247); a vertical groove (2472) vertically opened at the outer wall position of the obturation plate (245); a moving block (2473) connected in the vertical groove (2472) in a sliding manner; and the connecting seat (2474) is installed on one side, away from the vertical groove (2472), of the moving block (2473), wherein the mounting block (2471) is hinged with the connecting seat (2474).
5. The automatic non-woven fabric production line of claim 3, wherein the bottom of the airtight plate (245) is rotatably connected with a guide plate (2475), the guide plate (2475) is rotatably connected with the airtight plate (245) through a rotating shaft (2476), the rotating shaft (2476) is sleeved with a torsion spring (2477), and a rubber strip (2478) is attached to the bottom of the guide plate (2475).
6. The automatic non-woven fabric production line according to claim 2, wherein a fixing table (251) is fixed on a side wall of the material holding barrel (24), a driving motor (252) is installed at a top position of the fixing table (251), a supporting body is fixed at the top of the fixing table (251), the supporting body is located between the driving motor (252) and the material holding barrel (24), a rotating disc (254) is assembled at an output end of the driving motor (252), an eccentric block (255) is fixed on one side surface of the rotating disc (254) far away from the driving motor (252), a swinging bar (256) is rotatably connected onto the eccentric block (255), an adaptation groove (2561) is formed in a bar body of the swinging bar (256) in a penetrating manner, a bar body (2562) matched with the adaptation groove (2561) is fixed on one side of the supporting body close to the swinging bar (256), and the adaptation groove (2561) is connected with the bar body (2562) in a sliding manner, the side wall of the material bearing barrel (24) is provided with a knocking piece, and the swing strip (256) is matched with the knocking piece to knock the outer wall of the material bearing barrel (24).
7. An automated non-woven production line according to claim 6, wherein the rapper comprises: a base body (257) arranged on the outer wall of the material bearing barrel (24); a swing strip (2571) which is rotatably connected with the middle rod body (2562) and the seat body (257); the rams (2572) are arranged at two ends of the swinging bar (2571) and close to one side of the material bearing barrel (24); and one end of the swinging strip (256) is fixed on the outer wall of the material bearing barrel (24), the other end of the swinging strip (2571) is fixed on the rod body (2562), and the return spring (2573) is positioned on one side of the seat body (257), wherein the swinging strip (256) is abutted against the other side of the swinging strip (2571) which is not provided with the return spring (2573).
8. The automatic non-woven fabric production line according to claim 2, wherein a support (26) is circumferentially fixed on the material mixing barrel (21), the material holding barrel (24) is fixedly arranged with the support (26), a second stirring machine (27) is fixed at the bottom of the support (26), and the output end of the second stirring machine (27) penetrates through the support (26) and is inserted into the material holding barrel (24).
9. The automatic non-woven fabric production line according to claim 2, wherein the inner wall of the material holding barrel (24) is arranged obliquely, and a cover plate (28) is hinged to the top of the material holding barrel (24).
10. The automated non-woven fabric production line according to claim 2, wherein a leakage-proof strip (29) is annularly arranged at the top of the material mixing barrel (21), and the leakage-proof strip (29) is obliquely arranged upwards and towards the middle of the material mixing barrel (21).
Technical Field
The application relates to the field of non-woven fabric production equipment, in particular to an automatic non-woven fabric production line.
Background
The non-woven fabric is a fabric formed without spinning and weaving, only the short textile fibers or filaments are oriented or randomly arranged to form a fiber web structure, and then the fiber web structure is reinforced by adopting mechanical, thermal bonding or chemical methods and the like, and the non-woven fabric is not interwoven and knitted together by yarn one by one, but is directly bonded together by a physical method, so that when a user takes the non-woven fabric into a sticky scale in the clothes, the non-woven fabric is found to have no thread end drawn out. The non-woven fabric breaks through the traditional spinning principle and has the characteristics of short process flow, high production rate, high yield, low cost, wide application, multiple raw material sources and the like.
Nonwoven fabrics are widely produced nowadays, and in a nonwoven fabric production line, the general process flow steps are as follows:
1. preparing raw materials according to production needs;
2. feeding the raw materials to be mixed into an extruder through a pipeline to react to form process raw materials in a molten state;
3. the process raw materials are conveyed to a sheet filter for filtering through the matching of a pump body and a pipeline, and some impurities in the process raw materials are separated to obtain purified process raw materials;
4. pumping the purified process raw materials into a cloth forming machine through a metering pump, so that the purified process raw materials can enter the cloth forming machine;
5. spinning and discharging yarns in a cloth forming machine through a spinneret plate;
6. the positive air pressure generated by an air pipe arranged at the top in the cloth forming machine body and the negative air pressure generated by an air pipe at the bottom are matched to carry out vertical traction and pulling on the filament;
7. after being pulled, the filament is transmitted through a conveyor belt at the bottom of a cloth forming machine, and the filament can form a non-woven fabric semi-finished product on the top surface of the conveyor belt due to vertical traction of wind pressure and horizontal traction of the conveyor belt;
8. and the conveying belt is used for conveying the non-woven fabric semi-finished product, and the non-woven fabric semi-finished product is subjected to hot rolling and winding to finally form a bundle of the non-woven fabric finished product.
However, on the present non-woven fabrics production line, the process of batching part often can adopt the staff to irritate the material toward the feeder hopper, the direct input that gets into the extruder of raw materials reacts, make by the extruder production, process raw materials under the molten condition often can be inhomogeneous, cause follow-up silk thread through spinneret spun often can appear the broken string, it is even to glue and make non-woven fabrics semi-manufactured goods can appear the height unevenness, the problem of thickness variation, even hot rolling through the later stage also can not improve perfectly, cause non-woven fabrics finished product quality to go wrong.
Disclosure of Invention
In order to improve the finished product quality of non-woven fabrics, this application provides an automatic non-woven fabrics production line, can stir reaction raw materials effectively for the process raw materials quality of extruding through the extruder obtains improving, thereby improves the finished product quality of non-woven fabrics effectively.
The application provides a pair of automatic change non-woven fabrics production line adopts following technical scheme:
an automated nonwoven fabric production line comprising: a mounting frame disposed in a work environment; the production line feeding part is arranged at the highest layer of the mounting rack; the production line reaction part is connected with the output end of the production line feeding part and arranged on the middle layer of the mounting rack; with production line reaction portion output meets, sets up the production line collection portion of mounting bracket bottom, production line input portion is including setting up the agitating unit of mounting bracket highest level, production line reaction portion is including setting gradually middle-level extruder, chip type filter, measuring pump of mounting bracket and become the cloth machine, agitating unit's output with the input of extruder is linked together and sets up, the extruder communicates in proper order through the pipeline chip type filter the measuring pump, through the drive of measuring pump will be in the pipeline, under the molten state material transmission extremely become the input of cloth machine.
Through adopting above-mentioned technical scheme, can input the material through the production line pan feeding portion that sets up, the production line reaction portion through setting up can react the transmission with the material and become the non-woven fabrics, the production line collection portion through setting up can be collected the non-woven fabrics around the book, wherein, through the agitating unit who sets up, can carry out comparatively even stirring before improving the material feeding, then can improve the mixedness between the raw materials through even stirring, the degree of consistency, thereby can make by extruder production, the process raw materials under the molten condition is more even, improve later stage off-the-shelf quality effectively.
Preferably, the stirring device includes: the mixing barrel is arranged on the highest layer of the mounting rack, the top of the mixing barrel is provided with an opening, and the bottom of the mixing barrel is provided with a through hole; the fixing frame is arranged on the highest layer of the mounting frame and is positioned in the circumferential direction of the mixing barrel; and install fixed bolster top, output insert mix the first mixer in the storage bucket, wherein, it is provided with a plurality of holding buckets to mix storage bucket circumference, the output of holding bucket with the open-top of mixing the storage bucket meets, mix storage bucket bottom through opening and close of PLC control opening and with the input of extruder is put through, the holding bucket lateral wall is provided with and is used for sealing the closing member of holding bucket output.
Through adopting above-mentioned technical scheme, through the storage bucket that mixes among the agitating unit, the setting of first mixer, carry out the mixing that homogenizes to the raw materials, thereby make the raw materials can input again after homogenizing, carry out good support to first mixer through the mount, carry out holding of material through holding the storage bucket, thereby make the raw materials can carry out good holding, make the raw materials can classify effectively and carry out input simultaneously, can carry out the material control input of the time section simultaneously to the material according to the required condition of material.
Preferably, the closure comprises: the material guide groove is arranged at the output end of the material bearing barrel; a discharge port arranged on the side wall of the material bearing barrel; the slideways are symmetrically fixed on two sides of the discharge hole; the sliding shaft is connected in the slideway in a sliding manner; the side wall of the airtight plate is fixed with one end of the sliding shaft, which is far away from the slideway; the mounting seat is fixed on the side wall of the material bearing barrel and positioned above the discharge port; the cylinder is rotatably connected to the base body of the mounting base; and the connecting part is arranged at the output end of the air cylinder, wherein the air cylinder is connected with the sealing plate through the connecting part and drives the sealing plate to open and close the discharge hole.
Through adopting above-mentioned technical scheme, can lead to the input to the material well through the baffle box in the closing member, reduce the direct discharge ground of material and cause the waste of material and the ratio of material feeding to go wrong, through the slide, the cooperation setting of slide-spindle, can make the closing plate to the big or small control of discharge gate, thereby can be better according to the required ejection of compact that carries on of different materials, through the mount pad, the cooperation structure of cylinder and connecting portion, can open and close the closing plate effectively.
Preferably, the connection portion includes: the mounting block is arranged at the output end of the air cylinder; the vertical groove is vertically formed in the outer wall of the sealing plate; the moving block is connected in the vertical groove in a sliding manner; and the connecting seat is arranged on one side of the moving block, which is far away from the vertical groove, wherein the mounting block is hinged with the connecting seat.
Through adopting above-mentioned technical scheme, through the cooperation structure of installation piece, perpendicular groove and movable block, connecting seat in the connecting portion, can open and close the closing plate for when the closing plate reachd the slide top through the slide shaft, the closing plate can swing, leads to the material.
Preferably, the closing plate bottom rotates and is connected with the deflector, with the closing plate rotates through the pivot and connects, the cover is equipped with the torsional spring in the pivot, the deflector bottom is pasted and is equipped with the rubber strip.
Through adopting above-mentioned technical scheme, setting through the deflector for when the obturator plate is in complete inclosed state, can improve the laminating compactness of obturator plate, through the pivot, the setting of torsional spring and rubber strip, can make the deflector rotate the back at the obturator plate, can play certain direction, the effect that blocks to the material, reduce the waste that spills and cause of material, thereby make the material not have the maximize utilization and cause the process raw materials quality that the proportion volume made mistakes and cause the material to generate to have a problem.
Preferably, the material bearing barrel side wall is fixed with a fixed platform, a driving motor is installed at the top of the fixed platform, a supporting body is fixed at the top of the fixed platform, the supporting body is located between the driving motor and the material bearing barrel, the output end of the driving motor is provided with a turntable, an eccentric block is fixed on one side face, away from the driving motor, of the turntable, a swing strip is rotatably connected onto the eccentric block, a strip body of the swing strip penetrates through the eccentric block to be provided with an adaptive groove, a rod body matched with the adaptive groove is fixed on one side, close to the swing strip, of the supporting body, the adaptive groove is connected with the rod body in a sliding mode, a knocking piece is arranged on the material bearing barrel side wall, and the swing strip is matched with the knocking piece to knock the outer wall of the material bearing barrel.
Through adopting above-mentioned technical scheme, through fixed station, driving motor's cooperation structure, rely on the integrated configuration of carousel, eccentric block, pendulum strip again for driving motor can drive the pendulum strip and make intermittent type nature striking to the piece of strikeing, makes the piece of strikeing to the lateral wall of holding the storage bucket, makes the material in the holding storage bucket can reduce the adhesion and locate at the inner wall position of holding the storage bucket effectively.
Preferably, the plexor member includes: the base body is arranged on the outer wall of the material bearing barrel; the middle rod body is rotatably connected with the seat body through a swinging strip; the impact hammers are arranged at two ends of the swinging strip and are close to one side of the material bearing barrel; and one end of the swinging strip is fixed on the outer wall of the material bearing barrel, the other end of the swinging strip is fixed on the swinging strip rod body, and the resetting spring is positioned on one side of the seat body, wherein the swinging strip is abutted against the other side part of the swinging strip, which is not provided with the resetting spring.
Through adopting above-mentioned technical scheme, through the structure that cooperatees of pedestal and swing strip, combine reset spring and the intermittent type formula striking of pendulum strip, can effectively make the ram can beat the outer wall of holding the storage bucket to the striking of pendulum strip to the swing strip once can make the ram at swing strip both ends can both strike holding the storage bucket.
Preferably, a support is circumferentially fixed on the material mixing barrel, the material bearing barrel is fixedly arranged with the support, a second stirrer is fixed at the bottom of the support, and an output end of the second stirrer penetrates through the support and is inserted into the material bearing barrel.
Through adopting above-mentioned technical scheme, through the setting of support for the second mixer can also stir the material in holding the storage bucket, has improved the degree of consistency of material, and it is more even to mix multiple material through the first mixer of material rethread after the second mixer stirs, can improve the degree of mixing of raw materials better, reduces the adhesion between the material, makes subsequent material reaction can be better.
Preferably, the inner wall of the material bearing barrel is obliquely arranged, and the top of the material bearing barrel is hinged with a cover plate.
Through adopting above-mentioned technical scheme, the slope through holding the storage bucket sets up and can make the material can stably fall into the position department of baffle box, can reduce spilling over of material through the setting of apron.
Preferably, the top of the stirring barrel is annularly provided with a leakage-proof strip, and the leakage-proof strip inclines upwards and faces the middle part of the stirring barrel.
Through adopting above-mentioned technical scheme, through the setting of leak protection strip, can be so that stir the material in the storage bucket and can be blockked effectively when homogenizing, reduced the departure of material to can reduce the waste of material.
In summary, the present application includes at least one of the following beneficial technical effects:
this application can input the material through the production line pan feeding portion that sets up, can react the transmission through the production line reaction portion that sets up with the material and become the non-woven fabrics, the production line collection portion through setting up can be collected the non-woven fabrics around rolling up, wherein, agitating unit through setting up, can carry out comparatively even stirring before improving the material feeding, then can improve the mixedness between the raw materials through even stirring, the degree of consistency, thereby can make by extruder production, the process raw materials under the molten condition is more even, improve later stage off-the-shelf quality effectively.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a stirring device in an embodiment of the present application;
FIG. 3 is a schematic structural view of a material holding barrel in the embodiment of the present application;
FIG. 4 is an enlarged view of A in FIG. 3;
fig. 5 is a structural view of a material holding barrel in the embodiment of the present application.
Description of reference numerals: 1. a mounting frame; 21. a material mixing barrel; 22. a fixed mount; 23. a first mixer; 24. a material holding barrel; 241. a material guide chute; 242. a discharge port; 243. a slideway; 244. a slide shaft; 245. a closing plate; 246. a mounting seat; 247. a cylinder; 2471. mounting blocks; 2472. a vertical slot; 2473. a moving block; 2474. a connecting seat; 2475. a guide plate; 2476. a rotating shaft; 2477. a torsion spring; 2478. a rubber strip; 251. a fixed table; 252. a drive motor; 253. a support plate; 254. a turntable; 255. an eccentric block; 256. swinging the bar; 2561. an adaptation groove; 2562. a rod body; 257. a base body; 2571. a swing bar; 2572. a ram; 2573. a return spring; 26. a support; 27. a second mixer; 28. a cover plate; 29. a leak-proof strip; 31. an extruder; 32. a sheet filter; 33. a metering pump; 34. a cloth forming machine; 341. a blowing device; 342. an air draft device; 35. a conveyor belt; 36. a pipeline; 37. and (4) a winding machine.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses automatic non-woven fabrics production line, refer to fig. 1, fig. 2, an automatic non-woven fabrics production line, including penetrating the locking through the bolt and setting up at subaerial mounting bracket 1 of operational environment, this mounting bracket 1 still fixes through welded placing with the locking position on ground, and mounting bracket 1 has three big layers, connects through the step (not shown in the figure) between every layer, and the staff can pass through every layer at mounting bracket 1 through the step.
Wherein, referring to fig. 1 and 2, a production line feeding portion is provided at a highest layer structure of the mounting frame 1, specifically, the production line feeding portion includes a stirring device, a production line reaction portion is provided at a middle portion of the mounting frame 1, specifically, the production line reaction portion includes an extruder 31, a sheet filter 32, a metering pump 33 and a cloth forming machine 34 which are sequentially provided at a middle layer of the mounting frame 1, and a production line collecting portion is provided at a bottom position of the mounting frame 1, specifically, the production line collecting portion includes a winding machine 37.
Referring to fig. 1 and 2, a specific production line process is that raw materials are input from a stirring device, an output end of the stirring device is communicated with an input end of an extruder 31 through a pipeline 36, and the communication position of the stirring device and the input end of the extruder 31 is controlled by a PLC, so that the raw materials can be discharged according to production conditions, the raw materials react in the extruder 31 and gradually change from a solid state to a molten state, the extruder 31 is sequentially communicated with a plate filter 32 and a metering pump 33 through the pipeline 36, and the process raw materials in the molten state are transmitted in the pipeline 36 through a pump body.
Referring to fig. 1 and 2, the process raw material is output from the extruder 31, impurities in the process raw material are filtered by the sheet filter 32, the purity of the process raw material is improved, the process raw material in the pipeline 36 is conveyed to the input end position of the cloth forming machine 34 by the input of the metering pump 33, wherein the cloth forming machine 34 comprises three major parts, a spinneret plate for carrying the process raw material is arranged at the top of the cloth forming machine 34, the spinneret plate can draw and discharge the process raw material to form non-woven fabric filaments, meanwhile, a blowing device 341 for blowing air downwards is arranged at the top position of the spinneret plate at the inner top position of the cloth forming machine 34, an air extracting device corresponding to the blowing air of the blowing device 341 is arranged at the inner bottom position of the cloth forming machine 34, and a traction state for guiding the non-woven fabric filaments can be formed in the cloth forming machine 34 by the arrangement of the blowing device 341 and the air extracting device 342, the nonwoven filaments are pulled from an inner top position to a bottom position of the cloth-forming machine 34.
Correspondingly, referring to fig. 1 and 2, a conveyor belt 35 is arranged at the bottom of the cloth forming machine 34, the conveying direction of the conveyor belt 35 is perpendicular to the drawing direction of the non-woven fabric filaments, the non-woven fabric filaments continuously fall on the conveyor belt 35 during the conveying process of the conveyor belt 35, and the conveyor belt 35 continuously advances, so that the non-woven fabric filaments gradually form a non-woven fabric semi-finished product on the top surface of the conveyor belt 35.
Referring to fig. 1 and 2, the semi-finished non-woven fabric is conveyed to a hot rolling mill for hot rolling through a conveyor belt 35, surface broken filaments of the semi-finished non-woven fabric are compressed to form a finished non-woven fabric, and the finished non-woven fabric is wound through a winding machine 37 to form a non-woven fabric bundle.
In the present embodiment, referring to fig. 1 and 2, the stirring device disposed on the top layer of the mounting frame 1 includes a
Meanwhile, referring to fig. 2 and 3, a plurality of
Referring to fig. 3 and 4, a
Referring to fig. 3 and 4, the
In the present embodiment, referring to fig. 3 and 4, since the mounting
Meanwhile, referring to fig. 3 and 4, an installation block 2471 is assembled at an output end of the
In the present embodiment, referring to fig. 3 and 4, the guide plate 2475 is rotatably connected to the bottom of the sealing plate 245, the guide plate 2475 is rotatably connected to the sealing plate 245 by the rotating shaft 2476, the rubber strip 2478 is attached to the bottom of the guide plate 2475, the rotating shaft 2476 connecting the guide plate 2475 and the sealing plate 245 is sleeved with the torsion spring 2477, the guide plate 2475 is away from the
Meanwhile, referring to fig. 3 and 4, one end of the guide plate 2475, which is far away from the hinged end, is provided with a rounded corner, the sliding shafts 244 on two sides of the guide plate 2475 reach the topmost position of the sliding
In addition, a fixing table 251 is fixed to a side wall of the
Referring to fig. 3 and 5, an
Meanwhile, referring to fig. 3 and 5, a
Referring to fig. 3 and 5, a
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
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