CN115404596A

CN115404596A - Lapping machine with water conservancy diversion effect

Info

Publication number: CN115404596A
Application number: CN202210967463.XA
Authority: CN
Inventors: 马晓飞; 刘洪印; 荣小瑛; 刘平平; 张瑞
Original assignee: Jixiang Sanbao High Tech Textile Co Ltd
Current assignee: Jixiang Sanbao High Tech Textile Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-11-29
Anticipated expiration: 2042-08-12
Also published as: CN115404596B

Abstract

The invention discloses a lapping machine with a flow guide effect, which belongs to the field of lapping machines and comprises a workbench, wherein a reciprocating assembly is arranged at the top of the workbench, a rectangular frame is connected onto the reciprocating assembly, the height difference between the bottom of the rectangular frame and the workbench is 100mm, two groups of conveying wheels are rotatably connected to the inner wall of the bottom of the rectangular frame, connecting plates are fixedly connected to two sides of the rectangular frame, sliding rods are slidably connected onto the two groups of connecting plates, pressing wheels are fixedly connected to the bottoms of the sliding rods, the lapping machine conveys a fiber web by arranging the rectangular frame, the distance between the lapping machine and the workbench surface is reduced, the fiber web is prevented from floating slightly and stacking wrinkles, the smoothness of the fiber web is improved, and meanwhile, the fiber web of the lapping machine is rolled and pressed by the pressing wheels, the alignment of two ends of the fiber web and the connection stability between two layers are improved, and the forming quality is improved.

Description

Lapping machine with water conservancy diversion effect

Technical Field

The invention relates to the technical field of lapping machines, in particular to a lapping machine with a flow guiding function.

Background

The production equipment of the non-woven fabric mainly comprises an opener, a carding machine, a lapping machine and a needle loom or a spunlace machine, wherein the opener opens and supplies non-woven fibers to the carding machine, the non-woven fibers carded by the carding machine are supplied to the lapping machine for lapping, the lapping machine conveys fiber webs through a net curtain, and the fiber webs are conveyed to the needle loom for needle punching or the spunlace machine for spunlacing after being lapped, so that a non-woven product is formed.

The lapping device of the lapping machine in the prior art comprises an inclined curtain and a flat curtain which are used for conveying a fiber web, wherein a compensation curtain is arranged on the lower side of the discharge end of the flat curtain, ring curtains are arranged on the upper side and the lower side of the compensation curtain, a pair of guide net rollers are arranged below the discharge end of the ring curtain, the net curtain moves to a bottom curtain positioned below the guide net rollers after passing through the space between the guide net rollers, and finally the fiber web is conveyed to the next station through the bottom curtain; the device still sets up the guide net roller between ring curtain and end curtain, leads to the ring curtain too big with the distance between the end curtain, and the quality of fibre net is lighter again, and when carrying the fibre net fast, the fibre net appears the fold easily wafing, and the fibre net is when reciprocating laying simultaneously, is dragged by lapping device easily, leads to the fibre net both ends of laying untidy, connects unstablely between the two-layer fibre net, and the shaping effect is relatively poor.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide a lapping machine with a flow guide function, wherein a rectangular frame is arranged to convey and lap a fiber web, the distance between the rectangular frame and a working table surface is reduced, the fiber web is prevented from floating slightly and stacking wrinkles, the smoothness of the fiber web is improved, meanwhile, the lapped fiber web is rolled and pressed through a pressing wheel, the alignment of two ends of the fiber web and the stability of connection between two layers are improved, and the forming quality is improved.

The purpose of the invention can be realized by the following technical scheme:

a lapping machine with a flow guide effect comprises a workbench, wherein a reciprocating assembly is arranged at the top of the workbench, a rectangular frame is connected onto the reciprocating assembly, the height difference between the bottom of the rectangular frame and the workbench is 100mm, two groups of conveying wheels are rotatably connected to the inner wall of the bottom of the rectangular frame, two groups of driving motors are fixedly connected to the outer wall of the rectangular frame, and output ends of the two groups of driving motors penetrate through the rectangular frame and are respectively and fixedly connected with the two groups of conveying wheels; connecting plates are fixedly connected to two sides of the rectangular frame, sliding rods are connected to the two groups of connecting plates in a sliding mode, and pinch rollers are fixedly connected to the bottoms of the sliding rods; two sets of equal fixedly connected with of connecting plate bottom cover of breathing in, workstation one side fixedly connected with defeathering subassembly, defeathering subassembly is connected with the cover of breathing in.

As a further scheme of the invention: reciprocating assembly includes two sets of fixed plates, and is two sets of the fixed plate sets up in the workstation both sides, and is two sets of it is connected with two sets of reciprocal lead screws to rotate between the fixed plate, and is two sets of equal fixedly connected with slider on the reciprocal lead screw, rectangular frame fixed connection is two sets of between the slider, two sets of reciprocating motor of fixedly connected with on the fixed plate, it is two sets of the reciprocating motor output all runs through the fixed plate and is connected with two sets of reciprocal lead screws.

As a further scheme of the invention: the novel screw driver is characterized in that four groups of inner screw cylinders are rotatably connected inside the workbench, the four groups of inner screw cylinders are distributed in a rectangular mode, lifting screw rods are rotatably connected in the four groups of inner screw cylinders, the tops of every two groups of lifting screw rods penetrate through the workbench and are connected with one group of fixing plate bottoms, transmission gears are fixedly connected to the outer walls of the inner screw cylinders at the bottoms of the supporting plates, supporting plates are fixedly connected to the two sides of the rectangular frame, racks are fixedly connected to the bottoms of the supporting plates, and the racks are parallel to the transmission gears.

As a further scheme of the invention: the outer walls of the four groups of inner cylinders are fixedly connected with transmission chain wheels, the four groups of transmission chain wheels are connected through chain transmission, the inner wall of the top of the workbench is fixedly connected with a reset motor, the output end of the reset motor is fixedly connected with a driving chain wheel, and the driving chain wheel is in transmission connection with the transmission chain wheel.

As a further scheme of the invention: the hair removal component comprises a collecting box, an air pump and an air inlet pipe are fixedly connected to the top of the collecting box, one end, far away from the collecting box, of the air inlet pipe is communicated with an air suction cover, the two air suction covers are communicated through a connecting pipe, the air inlet end of the air pump is communicated with the collecting box, and a filter plate is fixedly connected inside the collecting box.

As a further scheme of the invention: the hair removal component further comprises a plurality of groups of intercepting rods fixedly connected to the top of the inner wall of the collecting box, the intercepting rods are arranged in a staggered mode, the outer wall of the top of the collecting box is fixedly connected with an air cylinder, the output end of the air cylinder penetrates through the collecting box and a push plate fixedly connected with the collecting box, the push plate slides on the intercepting rods, a discharge chute is formed in the bottom of the collecting box, a trapezoid frame fixedly connected with the top of the discharge chute is communicated with the collecting box, the top of the trapezoid frame is attached to the intercepting rods, L-shaped frames fixedly connected to two sides of the bottom of the discharge chute are connected with L-shaped frames, and a material receiving box is connected to the L-shaped frames in a sliding mode.

As a further scheme of the invention: the inner wall of the top of the rectangular frame is rotatably connected with two groups of guide wheels, and the two groups of guide wheels are respectively positioned on two sides of the top of the rectangular frame.

As a further scheme of the invention: and springs are sleeved on the outer walls of the two groups of sliding rods, and two ends of each spring are respectively abutted against the pressing wheel and the bottom of the connecting plate.

The invention has the beneficial effects that:

1. according to the invention, the rectangular frame is arranged to convey and lay the fiber webs, so that the distance between the rectangular frame and the working table surface is reduced, the fiber webs are prevented from floating slightly and stacking wrinkles, the smoothness of the fiber webs is improved, meanwhile, the laid fiber webs are rolled and compressed through the compression wheel, the alignment of the two ends of the fiber webs and the connection stability between the two layers are improved, and the forming quality is improved.

2. In the invention, the air pump absorbs the scattered fiber webs in the lapping net of the collecting box, the air inlet pipe and the air suction cover, so that the fiber webs are reduced from floating in the air and being absorbed by human bodies, and the working safety is improved.

3. According to the invention, the fiber webs are intercepted and blocked by the multiple groups of intercepting rods arranged in a staggered mode, then the air cylinder is started to drive the push plate to push the fiber webs attached to the intercepting rods into the material receiving box to be collected, and the utilization efficiency is improved.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic perspective sectional view of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic front view of the present invention;

FIG. 4 is a schematic perspective view of a rectangular frame according to the present invention;

FIG. 5 is a schematic view of the internal structure of the rectangular frame of the present invention;

fig. 6 is a schematic view of the internal structure of the hair removing assembly of the present invention.

In the figure: 1. a work table; 2. a reciprocating assembly; 201. a fixing plate; 202. a reciprocating screw rod; 203. a slider; 204. a reciprocating motor; 3. a rectangular frame; 301. a delivery wheel; 302. a drive motor; 303. pulling a plate; 304. a guide wheel; 4. a connecting plate; 401. a pinch roller; 4011. a slide bar; 4012. a spring; 5. an air intake cover; 6. a hair removal assembly; 601. a collection box; 6011. a discharge chute; 6012. an L-shaped frame; 602. an air pump; 6021. a filter plate; 603. an air inlet pipe; 6031. a connecting pipe; 604. a catch bar; 6041. a ladder frame; 605. a cylinder; 606. pushing the plate; 607. a material receiving box; 7. an inner screw cylinder; 701. a lifting screw rod; 702. a transmission gear; 703. a support plate; 704. a rack; 8. a drive sprocket; 801. a chain; 802. resetting the motor; 803. a drive sprocket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-6, a net laying machine with a flow guiding function comprises a workbench 1, wherein a reciprocating assembly 2 is arranged at the top of the workbench 1, a rectangular frame 3 is connected to the reciprocating assembly 2, the height difference between the bottom of the rectangular frame 3 and the workbench 1 is 100mm, the phenomenon that a fiber web floats excessively large during net laying is avoided, two groups of conveying wheels 301 are rotatably connected to the inner wall of the bottom of the rectangular frame 3, a plurality of groups of shifting plates 303 arranged at equal intervals are arranged on the two groups of conveying wheels 301, two groups of driving motors 302 are fixedly connected to the outer wall of the rectangular frame 3, and output ends of the two groups of driving motors 302 penetrate through the rectangular frame 3 and are fixedly connected with the two groups of conveying wheels 301 respectively; the two sides of the rectangular frame 3 are fixedly connected with connecting plates 4, two groups of connecting plates 4 are connected with sliding rods 4011 in a sliding manner, and the bottoms of the sliding rods 4011 are fixedly connected with pinch rollers 401; the equal fixedly connected with cover 5 of breathing in two sets of connecting plates 4 bottoms, 1 one side fixedly connected with of workstation defeathering subassembly 6, defeathering subassembly 6 is connected with cover 5 of breathing in.

As shown in fig. 1, fig. 2 and fig. 3, the reciprocating assembly 2 includes two sets of fixing plates 201, the two sets of fixing plates 201 are disposed on two sides of the workbench 1, two sets of reciprocating screws 202 are rotatably connected between the two sets of fixing plates 201, sliders 203 are fixedly connected to the two sets of reciprocating screws 202, the rectangular frame 3 is fixedly connected between the two sets of sliders 203, two sets of reciprocating motors 204 are fixedly connected to the fixing plates 201, output ends of the two sets of reciprocating motors 204 penetrate through the fixing plates 201 and are connected with the two sets of reciprocating screws 202, the reciprocating motors 204 are servo motors and are alternately rotated in a forward and reverse direction according to program control, the two sets of reciprocating motors 204 drive the two sets of reciprocating screws 202 to rotate, the two sets of reciprocating screws 202 drive the two sets of sliders 203 to slide, and the two sets of sliders 203 drive the rectangular frame 3 to reciprocate to lay the mesh.

As shown in fig. 1, 2 and 3, four groups of inner screw barrels 7 are rotatably connected inside the workbench 1, the four groups of inner screw barrels 7 are distributed in a rectangular shape, lifting screw rods 701 are rotatably connected inside the four groups of inner screw barrels 7, the tops of every two groups of lifting screw rods 701 penetrate through the workbench 1 and are connected with the bottoms of one group of fixing plates 201, transmission gears 702 are fixedly connected to the outer walls of the inner screw barrels 7 at the bottom of the supporting plate 703, supporting plates 703 are fixedly connected to the two sides of the rectangular frame 3, racks 704 are fixedly connected to the bottoms of the supporting plates 703, the racks 704 are parallel to the transmission gears 702, transmission chain wheels 8 are fixedly connected to the outer walls of the four groups of inner screw barrels 7, the four groups of transmission chain wheels 8 are in transmission connection through chains 801, when the rectangular frame 3 reciprocates to perform mesh laying, when the rectangular frame 3 moves to one side of the workbench 1, the racks 704 at the bottoms of the supporting plates 703 are meshed with the transmission gears 702 on the inner screw barrels 7 to drive the inner screw barrels 7 to rotate, the inner screw rods 701 to drive the lifting screw rods 701 to move upwards through the reciprocating assemblies 701, and the lifting screw rods 701 to drive the rectangular frame 3 to move upwards through the reciprocating assemblies 2, so as to adjust the distance between the rectangular frame 3 and the workbench 1.

As shown in fig. 1, a reset motor 802 is fixedly connected to the inner wall of the top of the workbench 1, a driving sprocket 803 is fixedly connected to the output end of the reset motor 802, the driving sprocket 803 is in transmission connection with a driving sprocket 8, when the web laying thickness reaches a required thickness, the reset motor 802 is started, the reset motor 802 drives the driving sprocket 803 to rotate, the driving sprocket 803 is meshed with a chain 801 to drive four groups of inner screw cylinders 7 to rotate, the four groups of inner screw cylinders 7 drive four groups of lifting screw rods 701 to move downwards, the height of the rectangular frame 3 is reset, and the web laying is performed again.

As shown in fig. 1, fig. 2, fig. 3 and fig. 6, the hair removing assembly 6 includes a collecting box 601, an air pump 602 and an air inlet pipe 603 are fixedly connected to the top of the collecting box 601, one end of the air inlet pipe 603 away from the collecting box 601 is communicated with the air suction cover 5, two sets of air suction covers 5 are communicated with each other through a connecting pipe 6031, the air inlet end of the air pump 602 is communicated with the collecting box 601, the collecting box 601 enables the inside of the air suction cover 5 to generate negative pressure through the air inlet pipe 603 to suck and collect dust and cilia on the fiber web, a filter plate 6021 is fixedly connected to the inside of the collecting box 601, and the filter 6021 filters the dust entering the inside of the collecting box 601 to avoid dust discharge.

As shown in fig. 1, 2, 3 and 6, the hair removing assembly 6 further includes a plurality of sets of intercepting rods 604 fixedly connected to the top of the inner wall of the collecting box 601, the plurality of sets of intercepting rods 604 are arranged in a staggered manner to intercept and collect cilia entering the collecting box 601, so as to prevent the cilia from blocking the filter plate 6021, an air cylinder 605 is fixedly connected to the outer wall of the top of the collecting box 601, an output end of the air cylinder 605 penetrates through the collecting box 601 and is fixedly connected with a push plate 606, the push plate 606 slides on the plurality of sets of intercepting rods 604, so as to push out the cilia obstructed on the intercepting rods 604 from the intercepting rods 604, a discharging slot 6011 is formed at the bottom of the collecting box 601, a trapezoidal frame 6041 communicated with the collecting box 601 is fixedly connected to the top of the discharging slot 6011, the top of the trapezoidal frame 6041 is abutted to the plurality of intercepting rods 604, L frames 6012 are fixedly connected to two sides of the bottom of the discharging slot 6011, a material receiving box 607 is slidably connected to the material receiving box 607, so as to collect cilia dust entering the collecting box 60601 and guide the cilia dust to flow upwards to prevent the dust from entering the dust collecting box 607 and from flowing out of the cilia mixed cilia dust.

As shown in fig. 1, 2, 3, 4 and 5, two sets of guide wheels 304 are rotatably connected to the inner wall of the top of the rectangular frame 3, and the two sets of guide wheels 304 are respectively located at two sides of the top of the rectangular frame 3 to guide the fiber web entering the rectangular frame 3, so as to reduce friction between the fiber web and the rectangular frame 3.

As shown in fig. 1, 2, 3, 4 and 5, two groups of sliding rods 4011 are sleeved with springs 4012, two ends of each spring 4012 respectively abut against the bottoms of the pressing wheel 401 and the connecting plate 4, and the pressing effect of the pressing wheel 401 on the fiber web is improved.

The working principle of the invention is as follows: when a user uses the carding machine, a fiber web carded by the carding machine is sent into the rectangular frame 3, then the fiber web penetrates between the two groups of conveying wheels 301 and is placed on the workbench 1, then the driving motor 302 is started, the driving motor 302 drives the two groups of conveying wheels 301 to rotate to convey the fiber web, the two groups of reciprocating motors 204 are started simultaneously, the two groups of reciprocating motors 204 drive the two groups of reciprocating screw rods 202 to rotate, the sliding blocks 203 on the two groups of reciprocating screw rods 202 drive the rectangular frame 3 to reciprocate, the fiber web conveyed by the conveying wheels 301 is paved on the workbench 1, meanwhile, when the rectangular frame 3 moves, the connecting plate 4 drives the pressing wheel 401 to move, the pressing wheel 401 presses the fiber web, the fiber web is prevented from floating and wrinkling appears, when the rectangular frame 3 reciprocates, the supporting plate 703 drives the rack 704 to move, and when the rack 704 moves to one end of the workbench 1, the rack 704 is meshed with a transmission gear 702 on the inner spiral cylinder 7, the inner spiral cylinder 7 is driven to rotate through the transmission gear 702, the four groups of inner spiral cylinders 7 synchronously rotate through a chain 801 to drive a lifting lead screw 701 in threaded connection with the inner spiral cylinder 7 to move upwards, the lifting lead screw 701 drives a rectangular frame 3 to move upwards through a reciprocating assembly 2, the distance between the rectangular frame 3 and the top of the workbench 1 is adjusted, the rectangular frame 3 is enabled to be always kept at a distance of 100mm from the workbench 1, the situation that a fiber web is paved thickly and is contacted and pulled with the fiber web paved on the workbench 1 is avoided, the paving stability is improved, meanwhile, an air pump 602 is started while the mesh is paved, the air pump 602 sucks air from the inside of the collecting box 601, the collecting box 601 sucks air from the inside of the air suction hood 5 through an air inlet pipe 603, the air suction hood 5 moves along with the rectangular frame 3 to suck cilia and dust scattered by the mesh paving and sends the air into the collecting box 601 through the air inlet pipe 603, then, when the cilia flow to the intercepting rod 604, the cilia are intercepted by the intercepting rod 604 to be intercepted at the intercepting rod 604, the dust continues to flow through the filter plate 6021 for filtering, the dust is intercepted on the filter plate 6021, the dust and the cilia are separated, when the cilia are piled too much on the intercepting rod 604, the air cylinder 605 is started, the air cylinder 605 drives the push plate 606 to slide downwards on the intercepting rod 604, and the cilia piled on the intercepting rod 604 are pushed out to the material receiving box 607 for collecting.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. A lapping machine with a flow guiding function comprises a workbench (1) and is characterized in that a reciprocating assembly (2) is arranged at the top of the workbench (1), a rectangular frame (3) is connected to the reciprocating assembly (2), the height difference between the bottom of the rectangular frame (3) and the workbench (1) is 100mm, two groups of conveying wheels (301) are rotatably connected to the inner wall of the bottom of the rectangular frame (3), two groups of driving motors (302) are fixedly connected to the outer wall of the rectangular frame (3), and output ends of the two groups of driving motors (302) penetrate through the rectangular frame (3) and are fixedly connected with the two groups of conveying wheels (301) respectively;

connecting plates (4) are fixedly connected to two sides of the rectangular frame (3), two groups of connecting plates (4) are connected with sliding rods (4011) in a sliding mode, and the bottoms of the sliding rods (4011) are fixedly connected with pressing wheels (401);

two sets of equal fixedly connected with cover (5) of breathing in connecting plate (4) bottom, workstation (1) one side fixedly connected with defeathering subassembly (6), defeathering subassembly (6) are connected with cover (5) of breathing in.

2. The lapping machine with flow guiding function according to claim 1, wherein the reciprocating assembly (2) comprises two sets of fixing plates (201), the two sets of fixing plates (201) are arranged on two sides of the workbench (1), two sets of reciprocating screw rods (202) are rotatably connected between the two sets of fixing plates (201), sliding blocks (203) are fixedly connected on the two sets of reciprocating screw rods (202), the rectangular frame (3) is fixedly connected between the two sets of sliding blocks (203), two sets of reciprocating motors (204) are fixedly connected on the fixing plates (201), and output ends of the two sets of reciprocating motors (204) penetrate through the fixing plates (201) and are connected with the two sets of reciprocating screw rods (202).

3. The lapping machine with the flow guide effect as claimed in claim 2, wherein four groups of inner screw cylinders (7) are rotatably connected inside the working table (1), the four groups of inner screw cylinders (7) are distributed in a rectangular shape, four groups of inner screw cylinders (7) are rotatably connected with lifting screw rods (701), every two groups of lifting screw rods (701) penetrate through the working table (1) at the tops and are connected with one group of fixing plates (201) at the bottoms, transmission gears (702) are fixedly connected to the outer walls of the inner screw cylinders (7), supporting plates (703) are fixedly connected to two sides of the rectangular frame (3), racks (704) are fixedly connected to the bottoms of the supporting plates (703), and the racks (704) are parallel to the transmission gears (702).

4. The lapping machine with flow guiding function according to claim 3, wherein the outer walls of the four groups of inner screw cylinders (7) are fixedly connected with transmission chain wheels (8), the four groups of transmission chain wheels (8) are in transmission connection through chains (801), the inner wall of the top of the workbench (1) is fixedly connected with a reset motor (802), the output end of the reset motor (802) is fixedly connected with a driving chain wheel (803), and the driving chain wheel (803) is in transmission connection with the transmission chain wheels (8).

5. The lapping machine with flow guiding function according to claim 1, wherein the hair removing assembly (6) comprises a collecting box (601), an air pump (602) and an air inlet pipe (603) are fixedly connected to the top of the collecting box (601), one end of the air inlet pipe (603) far away from the collecting box (601) is communicated with the air suction hoods (5), two groups of the air suction hoods (5) are communicated with each other through a connecting pipe (6031), the air inlet end of the air pump (602) is communicated with the collecting box (601), and a filter plate 6021 is fixedly connected to the inside of the collecting box (601).

6. The lapping machine with the flow guide function according to claim 5, wherein the hair removing assembly (6) further comprises a plurality of groups of intercepting rods (604) fixedly connected to the top of the inner wall of the collecting box (601), the intercepting rods (604) are arranged in a staggered manner, an air cylinder (605) is fixedly connected to the outer wall of the top of the collecting box (601), the output end of the air cylinder (605) penetrates through the collecting box (601) and is fixedly connected with a push plate (606), the push plate (606) slides on the intercepting rods (604), a discharge chute (6011) is formed in the bottom of the collecting box (601), a trapezoid frame (6041) communicated with the collecting box (601) is fixedly connected to the top of the discharge chute (6011), the top of the trapezoid frame (6041) is attached to the intercepting rods (604), L-shaped frames (6012) are fixedly connected to two sides of the bottom of the discharge chute (6011), and a material receiving box (607) is slidably connected to the L-shaped frame (6012).

7. The lapping machine with flow guiding function as claimed in claim 1, wherein two sets of guide wheels (304) are rotatably connected to the inner wall of the top of the rectangular frame (3), and the two sets of guide wheels (304) are respectively located on two sides of the top of the rectangular frame (3).

8. The lapping machine with flow guiding function as claimed in claim 1, wherein the outer walls of the two sets of sliding rods (4011) are sleeved with springs (4012), and two ends of the springs (4012) are respectively abutted against the bottoms of the pressing wheels (401) and the connecting plates (4).