CN210527981U - Non-woven fabric double-shaft unreeling double-shaft winding punching embossing splitting machine - Google Patents

Abstract

The utility model discloses a non-woven fabrics biax unreels biax rolling impressed watermark cutting machine that punches, include: biax unwinding mechanism, hot pressing mold, a cooling device, cut the device, biax winding mechanism, one side of biax unwinding mechanism is equipped with hot pressing mold, hot pressing mold keeps away from one side of biax unwinding mechanism and is equipped with biax winding mechanism, be equipped with cooling device in the biax winding mechanism and cut the device, adopt above-mentioned technical scheme, through the device of reloading in the biax unwinding mechanism, can not shut down on line and switch the non-woven fabrics, again through hot pressing mold with cloth impressed watermark shaping, it is stereotyped to cool off the cloth through cooling device, cut the device and be cut into many with the cloth branch, then through the rolling of line incessant of biax winding mechanism advance, thereby it is little that has realized that tension fluctuates, the rolling is neat, trepanning rate.

Description

Non-woven fabric double-shaft unreeling double-shaft winding punching embossing splitting machine

Technical Field

The utility model relates to a non-woven fabrics punches, gets and cuts the field, in particular to non-woven fabrics biax unreels biax rolling impressed watermark cutting machine that punches.

Background

At present, the non-woven fabric 3D perforating and splitting machine is mainly used for secondary processing of raw non-woven fabrics, the stereoscopic impression, the softness, the comfort and the water permeability of the non-woven fabrics are increased, the using effect of products such as paper diapers, sanitary towels and the like made of the non-woven fabrics after the secondary processing is better, the existing non-woven fabric unreeling structure is generally composed of an unreeling shaft and a tension detection roller, the unreeling shaft is driven by a motor or a magnetic powder clutch, the existing non-woven fabric biaxial unreeling biaxial reeling perforating and embossing splitting machine is generally composed of a double-shaft platform mechanism capable of being turned over, a movable unpowered material guide roller and an electric cutter, but in the structure, because only one unreeling shaft is adopted, when the materials are used up, the machine is required to be stopped, the machine can be started by manually finishing the materials, the efficiency of guiding the materials to the structure is low, and in the reeling structure, because the material, the tension of the non-woven fabric double-shaft unwinding double-shaft winding punching embossing splitting machine is unstable during normal work, the tension of a product produced by the structure is large in fluctuation, irregular in winding, low in trepanning rate and low in production speed, and therefore the non-woven fabric double-shaft unwinding double-shaft winding punching embossing splitting machine which is small in tension fluctuation, neat in winding, high in trepanning rate and high in production speed is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a non-woven fabrics biax that tension fluctuation is little, the rolling is neat, trepanning rate is high, production rate is higher unreels biax rolling impressed watermark cutting machine that punches.

In order to solve the technical problem, the utility model discloses a technical scheme does:

the utility model provides a non-woven fabrics biax unreels biax rolling impressed watermark cutting machine that punches, includes: biax unwinding mechanism, hot pressing die, cooling device, cut device, biax winding mechanism, one side of biax unwinding mechanism is equipped with hot pressing die, hot pressing die keeps away from one side of biax unwinding mechanism is equipped with the biax winding mechanism, be equipped with in the biax winding mechanism cooling device with cut the device.

Preferably, the double-shaft unwinding mechanism comprises: unreel frame, work unreel the axle, reserve unreel the axle, trade the material device, unreel sliding support, storage frame, unreel fixed bolster, material loading hook, it is equipped with in the fixed bolster to unreel work unreel the axle, reserve unreel the axle embedding install in unreel in the sliding support, it is fixed in to unreel the sliding support through the slider on unreeling the frame inboard slide rail, it rotates to unreel the frame and connects the material loading hook, be equipped with in the frame trade the material device with the storage frame, work unreel the axle with reserve unreel the axle all through gear connection driving motor.

Preferably, the reloading device comprises a material receiving pressing plate, a material stopping pressing plate, a material preparing pressing plate, a fixed shaft, a serrated knife, a transmission upper shaft and a transmission lower shaft, the material preparing pressing plate and the fixed shaft are located on the same straight line, the unreeling machine frame is sequentially provided with the transmission upper shaft, the serrated knife, the material receiving pressing plate, the material stopping pressing plate and the transmission lower shaft from top to bottom, the material receiving pressing plate is close to one side of the material preparing pressing plate, the material stopping pressing plate is close to the material stopping connecting plate arranged on one side of the material preparing pressing plate, the material receiving pressing plate and the material receiving connecting plate are located on the same straight line, an electric heating wire is arranged on the material receiving connecting plate, and the material stopping pressing plate and the material stopping connecting plate are located on.

Preferably, unreel and be equipped with pneumatic round pin on the sliding support, the storage frame includes storage upper shaft and storage lower shaft, the storage upper shaft is provided with 4 at least, the storage lower shaft is provided with 3 at least, every the storage upper shaft all levels side by side and sets up and be provided with the interval, every the storage lower shaft all inclines to set up side by side and is provided with the interval.

Preferably, the cooling device comprises a cooling main shaft and a cooling driven shaft, at least 2 cooling driven shafts are arranged, and the cooling driven shaft is arranged on one side of the cooling main shaft.

Preferably, the slitting device comprises: the cutting device comprises a cutting upper knife and a cutting bottom knife, wherein the cutting upper knife is tangent to the cutting bottom knife.

Preferably, the double-shaft winding mechanism comprises: rolling frame, friction roller, rolling working shaft, the reserve axle of rolling, the balanced slip subassembly of rolling, cutting off cutter subassembly, trade a mechanical arm subassembly, the lifing arm of unloading, the friction roller embedding install in the rolling frame, trade a mechanical arm subassembly one end and rotate and connect the pivot of friction roller, the reserve axle of rolling install in trade in the mechanical arm subassembly, cutting off cutter subassembly one end and rotate and connect the pivot of friction roller, the balanced slip subassembly of rolling passes through the slider and connects the slide rail of rolling frame, the rolling working shaft install in on the balanced slip subassembly of rolling, be equipped with the upset guide slot in the rolling frame, the lifing arm of unloading is located in the frame.

Preferably, the rolling balance sliding assembly comprises: the automatic winding device comprises a winding balance sliding support, a driving gear, a bearing, a C-shaped clamping seat, a clamping pin, a positioning block and a tension spring, wherein the C-shaped clamping seat is connected in a rotating mode through a fixed rotating shaft, the bearing is installed on the C-shaped clamping seat, the driving gear is arranged on one side of the winding balance sliding support, the clamping pin is connected in a rotating mode, the rolling balance sliding support is arranged, the positioning block is arranged on the winding balance sliding support, one end of the tension spring is connected with the clamping pin, the other end of the tension spring is fixed on the winding balance sliding support, and a winding working shaft is arranged in the C-shaped clamping.

Preferably, the cutting blade assembly comprises: the material guide device comprises a rotating support, a serrated knife, a rotating knife holder, an air cylinder, a knife plate and a material guide roller, wherein the knife plate is fixed on the rotating support, one end of the air cylinder is fixed on the rotating support, the other end of the air cylinder is connected with the rotating knife holder, the rotating knife holder is connected with the serrated knife, and the material guide roller is arranged on two sides of the knife plate in the rotating support.

Preferably, the shaft-changing mechanical arm assembly comprises: rotate swing arm, rack, cardboard board, trade a gear, synchronizing bar, it rotates to rotate the swing arm and connects the pivot of friction roller, the cardboard board passes through the slider and connects rotate the slide rail on the swing arm, be equipped with pneumatic round pin on the cardboard board, rack fixed mounting in rotate on the swing arm, be equipped with on the rack trade a gear, trade a gear connection the cardboard board, be equipped with in the trade a gear the synchronizing bar, it is equipped with the cylinder in one side of the pivot that the swing arm is close to the friction roller to rotate, the cylinder is connected the cardboard board, be equipped with drive gear on the cardboard board.

Adopt above-mentioned technical scheme, through the device of reloading in the biax unwinding mechanism, can switch the non-woven fabrics on line without shutting down, through hot pressing mold again with cloth impressed watermark shaping, through cooling device with cloth cooling design, cut the device and cut the cloth into many separately, then through the rolling of line incessant of biax winding mechanism progress to realized that the tension fluctuation is little, the rolling is neat, the trepanning rate is high, the higher function of production rate.

Drawings

FIG. 1 is a schematic structural diagram of a double-shaft unwinding double-shaft winding, punching, embossing and splitting machine for non-woven fabrics;

FIG. 2 is a schematic structural diagram of a dual-spindle unwinding mechanism;

FIG. 3 is a schematic structural diagram of a refueling device;

FIG. 4 is a schematic structural view of a double-shaft winding mechanism;

FIG. 5 is a schematic structural view of a rolling balance slide assembly;

FIG. 6 is a schematic view of a cutting blade assembly;

FIG. 7 is a schematic structural view of an axle-changing robot assembly;

FIG. 8 is a schematic view of the cutting blade assembly in an operative condition;

FIG. 9 is a schematic view of the winding balance sliding assembly in a working state of pushing out the winding shaft;

FIG. 10 is a schematic view of the winding balance slide assembly in an operating state before the winding shaft standby shaft is clamped;

fig. 11 is a schematic view of the working state of the winding balance sliding assembly after the winding standby shaft is clamped.

In the figure, 1-double-shaft unwinding mechanism, 2-hot-pressing die, 3-cooling main shaft, 4-cooling driven shaft, 5-slitting upper knife, 6-slitting bottom knife, 7-double-shaft winding mechanism, 11-standby unwinding shaft, 12-unwinding sliding bracket, 13-feeding hook, 14-unwinding frame, 15-material changing device, 16-storage lower shaft, 17-storage upper shaft, 18-unwinding fixed bracket, 19-working unwinding shaft, 1501-material preparation pressure plate, 1502-fixed shaft, 1503-transmission upper shaft, 1504-material changing serrated knife, 1505-material receiving pressure plate, 1506-material stopping pressure plate, 1507-transmission lower shaft, 1508-material stopping connecting plate, 1509-material receiving connecting plate, 71-winding frame, 72-shaft changing mechanical arm assembly, 73-a winding standby shaft, 74-a friction roller, 75-a cutting knife assembly, 76-a winding working shaft, 77-a winding balance sliding assembly, 78-a turning guide groove, 79-a discharging lifting arm, 7201-a clamping seat plate, 7202-a synchronous rod, 7203-a shaft changing gear, 7204-a rotating swing arm, 7205-a rack, 7501-a rotating bracket, 7502-an air cylinder, 7503-a rotating knife seat, 7504-a serrated knife, 7505-a guide roller, 7506-a knife rest plate, 7701-a clamping pin, 7702-a positioning block, 7703-a tension spring, 7704-a driving gear, 7705-a fixed rotating shaft, 7706-a bearing, 7707-C-a clamping seat and 7708-a winding balance sliding bracket.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, a non-woven fabrics biax unreels biax rolling impressed watermark cutting machine that punches includes: biax unwinding mechanism 1, hot pressing mold 2, cooling device, cut the device, biax winding mechanism 7, one side of biax unwinding mechanism 1 is equipped with hot pressing mold 2, hot pressing mold 2 keeps away from one side of biax unwinding mechanism 1 and is equipped with biax winding mechanism 7, be equipped with cooling device in the biax winding mechanism 7 and cut the device, cooling device is including cooling main shaft 3 and cooling from the axle 4, cooling from the axle 4 is provided with 2 at least, one side of cooling main shaft 3 is located to cooling from the axle 4, cooling device can cool off at the middle circulation cold water, cooling device also can use the mode of air-blower bloies to cool off, cut upper slitter 5 and cut bed knife 6, it is tangent with cutting bed knife 6 to cut upper slitter 5, it can be with pneumatic or manually operation to cut upper slitter 5.

Referring to fig. 2, the double-shaft unwinding mechanism 1 includes: the automatic feeding device comprises an unreeling rack 14, a working unreeling shaft 19, a standby unreeling shaft 11, a material changing device 15, an unreeling sliding support 12, a material storage rack, an unreeling fixing support 18 and a feeding hook 13, wherein the working unreeling shaft 19 is arranged in the unreeling fixing support 18, the standby unreeling shaft 11 is embedded in the unreeling sliding support 12, the unreeling sliding support 12 is fixed on a slide rail on the inner side of the unreeling rack 14 through a slide block, the unreeling rack 14 is rotatably connected with the feeding hook 13, the material changing device 15 and the material storage rack are arranged in the rack, the working unreeling shaft 19 and the standby unreeling shaft 11 are both connected with a driving motor through gears, a pneumatic pin is arranged on the unreeling sliding support 12, the material storage rack comprises upper material shafts 17 and lower material shafts 16, at least 4 upper material shafts 17 are arranged, at least 3 lower material shafts 16 are arranged, each upper material shaft 17 is horizontally, the working unreeling shaft 19 and the standby unreeling shaft 11 are connected with a driving motor through gears.

Referring to fig. 3, the material changing device 15 includes a material receiving pressing plate 1505, a material stopping pressing plate 1506, a material preparing pressing plate 1501, a fixing shaft 1502, a material changing serrated knife 1504, a transmission upper shaft 1503, and a transmission lower shaft 1507, wherein the material preparing pressing plate 1501 and the fixing shaft 1502 are positioned on the same straight line, the unwinding frame 14 is internally provided with the transmission upper shaft 1503, the material changing serrated knife 1504, the material receiving pressing plate 1505, the material stopping pressing plate 1506 and the transmission lower shaft 1507 in sequence from top to bottom, one side of the material receiving pressing plate 1505 close to the material preparing pressing plate 1501 is provided with a material receiving connecting plate 1509, one side of the material stopping pressing plate 1506 close to the material preparing pressing plate 1501 is provided with a material stopping connecting plate 1508, the material receiving pressing plate 1505 and the material receiving connecting plate 1509 are positioned on the same straight line, the material stopping pressing plate 1501 presses the spare non-woven fabric cloth onto the fixing shaft 1502, the material stopping pressing plate 1506 presses the spare non-woven fabric onto the fixing plate 1508, the material receiving pressing, the standby cloth and the input cloth are fused together by the heating wire, and the input cloth is cut off by the material changing serrated knife 1504, so that the non-woven fabrics can be switched on line without stopping.

Referring to fig. 4, the biaxial winding mechanism 7 includes: the winding machine comprises a winding machine frame 71, a friction roller 74, a winding working shaft 76, a winding standby shaft 73, a winding balance sliding assembly 77, a cutting knife assembly 75, a shaft-changing mechanical arm assembly 72 and a discharging lifting arm 79, wherein the friction roller 74 is embedded and installed in the winding machine frame 71, one end of the shaft-changing mechanical arm assembly 72 is rotatably connected with a rotating shaft of the friction roller 74, the winding standby shaft 73 is installed in the shaft-changing mechanical arm assembly 72, one end of the cutting knife assembly 75 is rotatably connected with the rotating shaft of the friction roller 74, the winding balance sliding assembly 77 is connected with a sliding rail of the winding machine frame 71 through a sliding block, the winding working shaft 76 is installed on the winding balance sliding assembly 77, a turnover guide groove 78 is formed in the winding machine frame 71, the discharging lifting arm 79 is arranged in the winding machine frame 71.

Referring to fig. 5 and 9, the wind-up balancing sliding assembly 77 includes: a rolling balance sliding bracket 7708, a driving gear 7704, a bearing 7706, a C-shaped clamping seat 7707, a clamping pin 7701, a positioning block 7702 and a tension spring 7703, wherein the C-shaped clamping seat 7707 is rotatably connected with the rolling balance sliding bracket 7708 through a fixed rotating shaft 7705, the bearing 7706 is installed on the C-shaped clamping seat 7707, one side of the rolling balance sliding bracket 7708 is provided with the driving gear 7704, the clamping pin 7701 is rotatably connected with the rolling balance sliding bracket 7708, the positioning block 7702 is arranged on the rolling balance sliding bracket 7708, one end of the tension spring 7703 is connected with the clamping pin 7701, the other end of the tension spring 7703 is fixed on the rolling balance sliding bracket 7708, a rolling working shaft 76 is arranged in the C-shaped clamping seat 7707, the rolling working shaft 76 in the C-shaped clamping seat 7707 can be horizontally moved, the C-shaped clamping seat 7707 is overturned when the rolling balance sliding assembly 77 moves to the position of the overturning guide groove 78, the discharge lifting arm 79 can be lifted to push out the winding work shaft 76.

Referring to fig. 6 and 8, the cutting blade assembly 75 includes: the cloth cutting machine comprises a rotating support 7501, a serrated knife 7504, a rotating knife holder 7503, an air cylinder 7502, a knife rest 7506, a material guide roller 7505, a knife rest 7506 fixed on the rotating support 7501, one end of the air cylinder 7502 fixed on the rotating support 7501, the other end of the air cylinder 7502 connected with the rotating knife rest 7503, the rotating knife rest 7503 connected with the serrated knife 7504, the material guide rollers 7505 arranged at two sides of the knife rest 7506 in the rotating support 7501, a cutter assembly 75 rotates to the upper side, the serrated knife 7504 pops up to cut off cloth, the cutter assembly 75 rotates to the lower standby position, the clamping seat 7201 descends and grabs a winding standby shaft 73, a shaft changing gear 7203 is meshed with the winding standby shaft 73, a rotating swing arm 7204 rotates by a certain angle to enable the winding standby shaft 73 to be tightly attached to a friction roller 74, and the winding standby shaft 73 winds the cut cloth on the winding shaft 73 to the upper side to prepare for replacing the winding.

Referring to fig. 7, the shaft changing robot assembly 72 includes: rotating swing arm 7204, rack 7205, cassette 7201, trade a gear 7203, synchronizing bar 7202, rotating swing arm 7204 rotates the pivot of connecting friction roller 74, cassette 7201 passes through the slide rail that the slider connection rotated swing arm 7204 on, be equipped with pneumatic round pin on cassette 7201, rack 7205 fixed mounting is on rotating swing arm 7204, be equipped with trade a gear 7203 on rack 7205, trade a gear 7203 connection cassette 7201, be equipped with synchronizing bar 7202 in the trade gear 7203, be equipped with cylinder 7502 in one side of rotating swing arm 7204 near the pivot of friction roller 74, cylinder 7502 connects cassette 7201, be equipped with drive gear 7704 on cassette 7201, through rotating swing arm 7204 with cassette 7201 swivelling movement in cassette 7201 to rolling balance sliding assembly 77 on the same straight line, conveniently follow-up trade axle.

Referring to fig. 10 and 11, the rolling balance sliding bracket 7708 moves towards the friction roller 74, the C-shaped clamping seat clamps the rolling standby shaft 73, the driving gear is meshed with the rolling standby shaft 73 for the purpose of replacing the driving motor, and then the shaft changing mechanical arm assembly 72 retracts and rotates to the standby position.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims (10)

1. The utility model provides a non-woven fabrics biax unreels biax rolling impressed watermark cutting machine that punches, a serial communication port, include: biax unwinding mechanism, hot pressing die, cooling device, cut device, biax winding mechanism, one side of biax unwinding mechanism is equipped with hot pressing die, hot pressing die keeps away from one side of biax unwinding mechanism is equipped with the biax winding mechanism, be equipped with in the biax winding mechanism cooling device with cut the device.

2. The double-shaft unwinding double-shaft winding, punching, embossing and splitting machine for non-woven fabrics according to claim 1, and is characterized in that: biax unwinding mechanism includes: unreel frame, work unreel the axle, reserve unreel the axle, trade the material device, unreel sliding support, storage frame, unreel fixed bolster, material loading hook, it is equipped with in the fixed bolster to unreel work unreel the axle, reserve unreel the axle embedding install in unreel in the sliding support, it is fixed in to unreel the sliding support through the slider on unreeling the frame inboard slide rail, it rotates to unreel the frame and connects the material loading hook, be equipped with in the frame trade the material device with the storage frame, work unreel the axle with reserve unreel the axle all through gear connection driving motor.

3. The double-shaft unwinding double-shaft winding, punching, embossing and splitting machine for non-woven fabrics according to claim 2, and is characterized in that: the reloading device comprises a material receiving pressing plate, a material stopping pressing plate, a material preparing pressing plate, a fixed shaft, a serrated knife, a transmission upper shaft and a transmission lower shaft, wherein the material preparing pressing plate and the fixed shaft are located on the same straight line, the unreeling machine frame is sequentially provided with the transmission upper shaft, the serrated knife, the material receiving pressing plate, the material stopping pressing plate and the transmission lower shaft from top to bottom, the material receiving pressing plate is close to one side of the material preparing pressing plate, the material stopping connecting plate is arranged on one side of the material preparing pressing plate, the material receiving pressing plate and the material receiving connecting plate are located on the same straight line, a heating wire is arranged on the material receiving connecting plate, and the material stopping.

4. The double-shaft unwinding double-shaft winding, punching, embossing and splitting machine for non-woven fabrics according to claim 2, and is characterized in that: unreel and be equipped with pneumatic round pin on the sliding support, the storage frame includes storage upper shaft and storage lower shaft, the storage upper shaft is provided with 4 at least, the storage lower shaft is provided with 3 at least, every the storage upper shaft all sets up and is provided with the interval side by side the level, every the storage lower shaft all inclines to set up and is provided with the interval side by side.

5. The double-shaft unwinding double-shaft winding, punching, embossing and splitting machine for non-woven fabrics according to claim 1, and is characterized in that: the cooling device comprises a cooling main shaft and cooling driven shafts, at least 2 cooling driven shafts are arranged, and the cooling driven shafts are arranged on one side of the cooling main shaft.

6. The double-shaft unwinding double-shaft winding, punching, embossing and splitting machine for non-woven fabrics according to claim 1, and is characterized in that: the slitting device comprises: the cutting device comprises a cutting upper knife and a cutting bottom knife, wherein the cutting upper knife is tangent to the cutting bottom knife.

7. The double-shaft unwinding double-shaft winding, punching, embossing and splitting machine for non-woven fabrics according to claim 1, and is characterized in that: biax winding mechanism includes: rolling frame, friction roller, rolling working shaft, the reserve axle of rolling, the balanced slip subassembly of rolling, cutting off cutter subassembly, trade a mechanical arm subassembly, the lifing arm of unloading, the friction roller embedding install in the rolling frame, trade a mechanical arm subassembly one end and rotate and connect the pivot of friction roller, the reserve axle of rolling install in trade in the mechanical arm subassembly, cutting off cutter subassembly one end and rotate and connect the pivot of friction roller, the balanced slip subassembly of rolling passes through the slider and connects the slide rail of rolling frame, the rolling working shaft install in on the balanced slip subassembly of rolling, be equipped with the upset guide slot in the rolling frame, the lifing arm of unloading is located in the frame.

8. The double-shaft unwinding double-shaft winding, punching, embossing and splitting machine for non-woven fabrics according to claim 7, and is characterized in that: the balanced slip subassembly of rolling includes: the automatic winding device comprises a winding balance sliding support, a driving gear, a bearing, a C-shaped clamping seat, a clamping pin, a positioning block and a tension spring, wherein the C-shaped clamping seat is connected in a rotating mode through a fixed rotating shaft, the bearing is installed on the C-shaped clamping seat, the driving gear is arranged on one side of the winding balance sliding support, the clamping pin is connected in a rotating mode, the rolling balance sliding support is arranged, the positioning block is arranged on the winding balance sliding support, one end of the tension spring is connected with the clamping pin, the other end of the tension spring is fixed on the winding balance sliding support, and a winding working shaft is arranged in the C-shaped clamping.

9. The double-shaft unwinding double-shaft winding, punching, embossing and splitting machine for non-woven fabrics according to claim 7, and is characterized in that: the severing knife assembly comprises: the material guide device comprises a rotating support, a serrated knife, a rotating knife holder, an air cylinder, a knife plate and a material guide roller, wherein the knife plate is fixed on the rotating support, one end of the air cylinder is fixed on the rotating support, the other end of the air cylinder is connected with the rotating knife holder, the rotating knife holder is connected with the serrated knife, and the material guide roller is arranged on two sides of the knife plate in the rotating support.

10. The double-shaft unwinding double-shaft winding, punching, embossing and splitting machine for non-woven fabrics according to claim 7, and is characterized in that: the shaft changing mechanical arm assembly comprises: rotate swing arm, rack, cardboard board, trade a gear, synchronizing bar, it rotates to rotate the swing arm and connects the pivot of friction roller, the cardboard board passes through the slider and connects rotate the slide rail on the swing arm, be equipped with pneumatic round pin on the cardboard board, rack fixed mounting in rotate on the swing arm, be equipped with on the rack trade a gear, trade a gear connection the cardboard board, be equipped with in the trade a gear the synchronizing bar, it is equipped with the cylinder in one side of the pivot that the swing arm is close to the friction roller to rotate, the cylinder is connected the cardboard board, be equipped with drive gear on the cardboard board.

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