CN214610507U - Paper tape conveying and fixed-length cutting device - Google Patents

Abstract

The utility model discloses a paper tape conveying and fixed length cutting device, which comprises a paper roll fixing component, an adjustable cutting central cylinder mechanism and a conveying belt component, wherein a paper tape is transmitted to the adjustable cutting central cylinder mechanism through the conveying belt component; the length of the arc from the circular surface of the adjustable cutting central cylinder to the cutting assembly is the length of the paper tape to be cut. After the adjustable cutting central cylinder is adjusted to a fixed position, the paper feeding belt driving wheel drives the paper feeding belt to move, the paper tape cut at the previous section is sent out of the outlet guide plate, meanwhile, the subsequent paper tape paper head reaches the photoelectric sensor to be positioned, and then the paper tape with the fixed length is continuously output in sequence.

Description

Paper tape conveying and fixed-length cutting device

Technical Field

The utility model relates to a printing packaging technical field, in particular to paper tape is carried and fixed length cutting device.

Background

Currently, there are many forms of web and cut-to-length structures in mechanical devices. However, in the glue passing device for the hardcover books in the printing and binding device, the glue passing device is limited by the layout form of a mechanical structure, the manufacturing cost, the operation requirement of the device and the quality requirement of a processed finished product, and has many special requirements on a paper tape conveying and fixed-length cutting mechanism: compact structure, space occupation is as little as possible, simple structure is with low costs, and manual operation is as few as possible, and paper tape length is accurate.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a paper tape cuts length adjustable paper tape and carries and fixed length cutting device.

In order to achieve the above purpose, the utility model provides a paper tape conveying and fixed length cutting device, which comprises a mounting plate, a paper roll fixing component for fixing a paper roll, an adjustable cutting central cylinder mechanism for adjusting the length of the cut paper tape and cutting the paper tape and a conveying belt component for conveying the paper tape, wherein the paper roll fixing component comprises the paper tape, the adjustable cutting central cylinder mechanism comprises a cutting component and an adjustable central cylinder length adjusting component, the paper roll fixing component, the cutting component, the adjustable central cylinder length adjusting component and the conveying belt component are all arranged on the mounting plate, the cutting component is arranged on the adjustable central cylinder length adjusting component, the adjustable central cylinder length adjusting component comprises a fixing plate, a central cylinder gear, a paper length adjusting driving gear, a transition gear, a paper conveying belt driving gear, a photoelectric sensor for positioning the position of a paper head and an outlet guide plate, the photoelectric sensor sets up in export deflector department, center tube gear, paper length adjustment driving gear and transition gear are all installed on the fixed plate, paper length adjustment driving gear and transition gear meshing, paper length adjustment driving gear drives the transition gear and moves, transition gear drive center tube gear rotates, after center tube gear rotates to fixed position, the paper tape drive wheel drives the motion of paper tape, the paper tape that will cut the cutting assembly sends out the export deflector, the stub of paper tape reachs light-emitting inductance ware department simultaneously, thereby realize the paper tape of the continuous output fixed length in proper order after fixing a position to the paper tape.

Preferably, the conveyer belt subassembly includes the entry leading wheel, the area of form advancing, the area entry of form advancing, locating plate adjustment sprocket, the locating plate, brush spring and pressure paper brush, the entry leading wheel, the area entry of form advancing, the locating plate, brush spring and pressure paper brush are all installed on the fixed plate, locating plate adjustment sprocket sets up on the locating plate, the paper tape commutates through the entry leading wheel and gets into the area entry of form advancing, locating plate adjustment sprocket is connected with the locating plate transmission, the locating plate passes through locating plate adjustment sprocket adjustment front and back position location, a brush spring and a pressure paper brush elastic connection for controlling paper tape transport tension.

Preferably, the cutting assembly comprises a cutter inlet, a cutter outlet, a paper feed belt reversing roller, a lower cutter, an upper cutter, a cutter inlet upper guide plate, a cutter inlet lower guide plate, an upper cutter fixing seat, a tension spring, a cylinder and a swing arm, wherein the lower cutter is arranged on a fixing plate, the upper cutter is arranged on the upper cutter fixing seat, the cutter inlet lower guide plate is matched with the cutter inlet upper guide plate to form a plane reference for cutting by the lower cutter and the lower cutter, a paper tape is conveyed into the cutter inlet through the paper feed belt, the paper tape is reversed by the paper feed belt reversing roller to enter the cutter outlet, one end of the swing arm is arranged on the fixing plate, the other end of the swing arm is movably connected with the cylinder, one end of the upper cutter fixing seat is connected to the swing arm through a hinge, and the other end of the upper cutter fixing seat is connected with the tension spring, thereby make the knife face laminating of going up the cutter under the knife face of cutter, the cylinder is installed on the fixed plate, and the reciprocating swing of cylinder drive swing arm makes last cutter realize shearing movement from top to bottom for lower cutter.

Preferably, the cutter inlet includes a cutter inlet pulley and a cutter inlet, and the paper web is fed into the cutter inlet pulley and the cutter inlet roller by a paper feed belt.

Preferably, the cutter outlet includes a cutter outlet pulley and a cutter outlet roller, and the paper tape is fed into the cutter outlet pulley and the cutter outlet roller by a paper feed tape.

Preferably, the paper feed belt inlet includes a paper feed belt inlet pulley and an inlet guide plate, and the paper belt is rotated by the inlet guide plate to enter the paper feed belt inlet pulley and the inlet guide plate.

Preferably, the adjustable central cylinder length adjusting assembly further comprises a plurality of tape winding rollers mounted on the fixing plate, and the photoelectric sensor is mounted on the fixing plate.

Preferably, the paper tape conveying and fixed-length cutting device further comprises a conveying belt driven roller for winding the conveying belt, and the conveying belt driven roller is installed on the installation plate.

Preferably, the paper tape conveying and fixed-length cutting device further comprises an installation plate, and the paper roll fixing assembly, the adjustable cutting assembly, the paper tape cutting length adjusting assembly and the conveyor belt assembly are all installed on the installation plate.

Preferably, a plurality of positioning shafts are mounted on the positioning plate, and the positioning plate adjusting chain wheel is movably connected with the positioning plate through the plurality of positioning shafts.

Preferably, the paper roll fixing component further comprises a paper roll shaft and a connecting plate, the paper tape is sleeved on the paper roll shaft, the connecting plate is movably connected with the paper roll shaft, and the positioning plate is fixedly connected with the connecting plate.

The technical scheme of the utility model is that the paper tape conveying and fixed length cutting device comprises a paper roll fixing component, an adjustable cutting central cylinder mechanism and a conveying belt component, wherein the paper tape is transmitted to the adjustable cutting central cylinder mechanism through the conveying belt component, and when the adjustable central cylinder length adjusting component is rotated, a paper length adjusting driving gear drives a transition gear to rotate a central cylinder gear arranged on a fixed plate, so that the adjustable cutting central cylinder rotates around the circle center; the length of the arc from the circular surface of the adjustable cutting central cylinder to the cutting assembly is the length of the paper tape to be cut. After the adjustable cutting central cylinder is adjusted to a fixed position, the paper feeding belt driving wheel drives the paper feeding belt to move, the paper tape cut at the previous section is sent out of the outlet guide plate, meanwhile, the subsequent paper tape paper head reaches the photoelectric sensor to be positioned, and then the paper tape with the fixed length is continuously output in sequence.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of a paper tape conveying and fixed-length cutting device according to the present invention;

FIG. 2 is a structural diagram of a paper tape cutting length adjusting assembly of the paper tape conveying and fixed length cutting device of the present invention;

FIG. 3 is an original work drawing of the paper tape feeding and length-fixing cutting device of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a rear view of the paper tape feeding and length-fixing cutting device of the present invention;

fig. 6 is a structural diagram of another view angle of the paper tape conveying and fixed length cutting device of the present invention.

Reference numerals: 1-mounting plate, 10-paper feeding belt inlet wheel, 11-inlet guide plate, 12-fixing plate, 121-cutter inlet pulley, 122-cutter outlet pulley, 123-display, 13-paper winding roller, 131-cutter inlet roller, 132-cutter outlet roller, 14-paper feeding belt reversing roller, 141-conveyor belt driven roller, 15-cutter inlet lower guide plate, 16-cutter inlet upper guide plate, 17-lower cutter, 18-upper cutter, 19-upper cutter holder, 2-paper reel, 20-tension spring, 21-swing arm, 22-cylinder, 23-paper length adjusting drive gear, 24-transition gear, 25-center cylinder gear, 26-paper feeding belt drive wheel, 27-paper feeding belt, 28-photoelectric sensor, 29-outlet guide plate, 3-connecting plate, 4-paper tape, 5-positioning plate adjusting chain wheel, 6-positioning plate, 61-positioning shaft, 7-paper pressing brush, 8-brush spring and 9-inlet guide wheel.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a paper tape is carried and fixed length cutting device.

In the embodiment of the present invention, as shown in fig. 1-6, the device comprises a mounting plate 1, a paper roll fixing component for fixing a paper roll, an adjustable cutting central cylinder mechanism for adjusting the length of a paper tape to be cut and cutting, and a conveying belt component for conveying the paper tape, wherein the paper roll fixing component comprises a paper tape 4, the adjustable cutting central cylinder mechanism comprises a cutting component and an adjustable central cylinder length adjusting component, the paper roll fixing component, the cutting component, the adjustable central cylinder length adjusting component and the conveying belt component are all mounted on the mounting plate 1, the cutting component is mounted on the adjustable central cylinder length adjusting component, the adjustable central cylinder length adjusting component comprises a central cylinder gear 25, a paper length adjusting driving gear 23, a transition gear 24, a conveying belt driving gear 26, a photoelectric sensor 28 for positioning the position of a paper head, and an outlet guide plate 29, the photoelectric sensor 28 is arranged at the outlet guide plate 29, the central cylinder gear 25, the paper length adjusting driving gear 23 and the transition gear 24 are all mounted on the fixing plate 12, the paper length adjusting driving gear 23 is meshed with the transition gear 24, the paper length adjusting driving gear 23 drives the transition gear 24 to move, the transition gear 24 drives the central cylinder gear 25 to rotate, after the central cylinder gear 25 rotates to a fixed position, the paper feeding belt driving gear 26 drives the paper feeding belt to move, the paper tape 4 cut by the cutting assembly is sent out of the outlet guide plate 29, and meanwhile, the paper head of the paper tape 4 reaches the light-emitting inductor 28, so that the paper tape 4 is positioned and then sequentially and continuously output with a fixed length.

The paper tape cutting device comprises a paper roll fixing assembly, a cutting assembly, an adjustable test paper tape cutting length adjusting assembly and a conveyor belt assembly, wherein a paper tape 4 is installed on a paper roll shaft 2, in the actual use process, the paper roll shaft 2 is rotatably sleeved on the paper roll shaft 2, the paper tape 4 is fed in a disc-shaped coil form, the conveying path of the paper tape 4 is distributed circumferentially, the paper tape 4 is transmitted to an adjustable cutting central cylinder mechanism through the conveyor belt assembly, a paper length adjusting driving gear 23, a transition gear 24, a photoelectric sensor 28 and an outlet guide plate 29 are all installed on a fixing plate 12, and when the adjustable central cylinder length adjusting assembly is rotated, the paper length adjusting driving gear 23 drives the transition gear 24 to rotate a central cylinder gear 25 installed on the fixing plate 12, so that the adjustable cutting central cylinder rotates around the circle center; the length of the arc from the circular surface of the adjustable cutting central cylinder to the cutting assembly is the length of the paper tape to be cut. After the adjustable cutting central cylinder is adjusted to a fixed position, the paper feeding belt driving wheel 26 drives the paper feeding belt 27 to move, the paper belt cut at the previous section is sent out of the outlet guide plate 29, meanwhile, the paper head of the subsequent paper belt 4 reaches the photoelectric sensor 28 to be positioned, and then the paper belt with the fixed length is continuously output in sequence. The cutting length of the paper strip 4 is adjusted by adjusting the adjustable cutting central cylinder shown in fig. 5. The cutting length of the paper tape 4 is that the paper head of the paper tape 4 is conveyed to the photoelectric sensor 28 at the outlet for positioning, the positioning is 0 position in length, and the arc length of the upper cutter 18 and the lower cutter 17 along the circular surface of the cutting center cylinder is the length of the paper tape 4. The paper length adjusting driving gear 23 is rotated to drive the transition gear 24, so that the central cylinder gear 25 arranged on the fixed plate rotates, and the adjustable cutting central cylinder rotates around the circle center. After the adjustable cutting central cylinder is adjusted to a fixed position, the paper feeding belt 27 is driven by the driving wheel 26 to drive the paper feeding belt 27 to move, the paper tape 4 cut at the previous section is sent out of the outlet guide plate 29, and meanwhile, the paper head of the paper tape 4 at the next section reaches the photoelectric sensor 28 to be positioned at the position 0. The fixed length of the web 4 is continuously output in sequence. The apparatus is further provided with a position display 123, and the position display 123 is coaxially connected to the paper length adjustment driving gear 23.

In this embodiment, the conveyor belt assembly includes an inlet guide wheel 9, a paper feeding belt 27, a paper feeding belt inlet, a positioning plate adjusting sprocket 5, a positioning plate 6, a brush spring 8 and a paper pressing brush 7 for controlling the paper belt conveying tension, the inlet guide wheel 9, the paper feeding belt inlet, the positioning plate 6, the brush spring 8 and the paper pressing brush 7 are both mounted on a fixing plate 12, the positioning plate adjusting sprocket 5 is arranged on the positioning plate 6, the paper belt 4 is reversed through the inlet guide wheel 9 to enter the paper feeding belt inlet, the positioning plate 6 adjusting sprocket 5 is in transmission connection with the positioning plate 6, the positioning plate 6 adjusts the front and rear positioning positions through the positioning plate 6 adjusting sprocket 5, so as to adjust the paper outlet position of the paper belt 4, and the brush spring 8 and the paper pressing brush 7 are elastically connected for controlling the paper belt conveying tension. Through emboliaing paper tape 4 on paper spool 2, 4 sides of paper tape lean on locating plate 6, adjust the front and back locating position of locating plate 6 through locating plate 6 adjustment sprocket 5 in the use, and then realize adjusting the position that paper tape 4 goes out the paper, the tension that paper tape 4 carried is realized by the pressure paper power of the paper brush 7 of pressing of brush spring 8 control. The web 4 is diverted by the entrance guide wheel into the entrance of the paper feed strip 27 consisting of the entrance wheel 10 of the paper feed strip 27 and the entrance guide plate 911. Wherein the feeding belt 27 is driven in the direction shown in fig. 4.

In this embodiment, the adjustable cutting assembly includes a knife inlet, a knife outlet, a paper feeding belt 27 reversing roller 14, a lower knife 17, an upper knife 18, a knife inlet upper guide plate 16, a knife inlet lower guide plate 15, an upper knife fixing seat 19, a tension spring 20, a cylinder 22 and a swing arm 21, the lower knife 17 is installed on the fixing plate 12, the upper knife 18 is installed on the upper knife fixing seat 19, the knife inlet lower guide plate 15 and the knife inlet upper guide plate 16 cooperate to form a planar reference for cutting the lower knife 17 and the lower knife 17, a paper tape 4 is conveyed into the knife inlet through the paper feeding belt 27, the paper tape 4 is reversed to enter the knife outlet through the paper feeding belt 27 reversing roller 14, one end of the swing arm 21 is installed on the fixing plate 12, the other end is movably connected with the cylinder 22, one end of the upper knife fixing seat 19 is connected to the swing arm 21 through a hinge, the other end is connected with the tension spring 20, so that the knife face of the upper knife 18 is attached to the knife face of the lower knife 17, the air cylinder 22 is installed on the fixing plate 12, and the air cylinder 22 drives the swing arm 21 to swing back and forth so that the upper cutting knife 18 can realize up-and-down shearing movement relative to the lower cutting knife 17. The paper tape 4 is fed from the inlet of the paper feeding belt 27 through the paper feeding belt 27 into the cutter inlet composed of the inlet cutter inlet pulley 121 and the cutter inlet roller. At the cutter entrance, the friction between the paper feed strip 27 and the cutter entrance roller is the traction of the paper strip 4 feed. The cutter inlet lower guide plate 15 and the cutter inlet upper guide plate 16 are plane references for cutting by the upper cutter 18 and the lower cutter 17, are used for supporting the paper tape 4 and are beneficial to cutting by the upper cutter 18 and the lower cutter 17. The lower cutter 17 is a fixed cutter, and the upper cutter 18 is a moving cutter. The upper cutter 18 is mounted on the upper cutter fixing seat 19. The upper cutter fixing seat 19 is hinged on the swing arm 21. One end of the upper cutter is hung on the swing arm 21, and the other end of the upper cutter is hung on the tension spring 20 of the upper cutter fixing seat, so that the cutter face of the upper cutter 18 is tightly attached to the cutter face of the lower cutter 17. When the air cylinder 22 drives the swing arm 21 to swing back and forth, the upper cutting knife 18 generates up-and-down shearing motion relative to the fixed knife lower cutting knife 17, and the paper cutting is completed.

In this embodiment, the cutter inlet includes a cutter inlet pulley 121 and a cutter inlet, and the paper tape 4 is fed into the cutter inlet pulley 121 and the cutter inlet roller by the paper feed tape 27. The structural design is used for realizing that the paper tape 4 enters the cutter outlet to perform the next step after being cut.

In this embodiment, the cutter exit includes a cutter exit pulley 122 and a cutter exit roller 132, and the paper web 4 is fed into the cutter exit pulley 122 and the cutter exit roller 132 by the paper feed belt 27.

In this embodiment, the entrance of the paper feeding belt 27 includes the entrance pulley 10 and the entrance guide 911 of the paper feeding belt 27, and the paper tape 4 is rotated by the entrance guide toward the entrance pulley 10 and the entrance guide 911 of the paper feeding belt 27.

In this embodiment, the adjustable central cylinder length adjustment assembly further includes a plurality of tape winding rollers 13, the plurality of tape winding rollers 13 being mounted on the fixing plate 12, and the photo sensor 28 being mounted on the fixing plate. A plurality of web winding rollers 13 are mounted on the fixed plate 12 to form an adjustable cutting central cylinder for winding the web.

In the present embodiment, the tape conveying and length-fixing cutting device further includes a conveyor belt driven roller 141 for winding the conveyor belt, and the conveyor belt driven roller 141 is mounted on the mounting plate 1. The belt driven rollers 141 are designed to facilitate the transport of the paper belt around the belt.

In this embodiment, a plurality of positioning shafts 61 are mounted on the positioning plate 6, and the positioning plate 6 is movably connected with the positioning plate 6 through the plurality of positioning shafts 61 by the adjusting sprocket 5. A plurality of location axle 61 are designed and are used for realizing adjusting the front and back locating position of locating plate 6 through locating plate 6 adjustment sprocket 5 in the use, and then realize adjusting the position that paper tape 4 goes out paper.

In this embodiment, the fixed subassembly of scroll still includes paper spool 2 and connecting plate 3, and paper tape 4 cup joints on paper spool 2, connecting plate 3 and paper spool 2 swing joint, locating plate 6 and connecting plate 3 fixed connection. The connecting plate is used for connecting the paper roll fixing component and the positioning plate 6.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (10)

1. A paper tape conveying and fixed-length cutting device is characterized by comprising a mounting plate, a paper tape fixing assembly, an adjustable cutting center cylinder mechanism and a conveyor belt assembly, wherein the paper tape fixing assembly is used for fixing a paper tape, the adjustable cutting center cylinder mechanism is used for adjusting the length of the cut paper tape and cutting the cut paper tape, the conveyor belt assembly is used for conveying the paper tape, the paper tape fixing assembly comprises the paper tape, the adjustable cutting center cylinder mechanism comprises a cutting assembly and an adjustable center cylinder length adjusting assembly, the paper tape fixing assembly, the cutting assembly, the adjustable center cylinder length adjusting assembly and the conveyor belt assembly are all mounted on the mounting plate, the cutting assembly is mounted on the adjustable center cylinder length adjusting assembly, the adjustable center cylinder length adjusting assembly comprises a fixing plate, a center cylinder gear, a paper length adjusting driving gear, a transition gear, a paper tape feeding driving wheel, a photoelectric sensor and an outlet guide plate, the photoelectric sensor is used for positioning the position of a paper head, the photoelectric sensing ware sets up export deflector department, center section of thick bamboo gear the long adjustment driving gear of paper with transition gear all installs on the fixed plate, the long adjustment driving gear of paper with transition gear meshing, the long adjustment driving gear of paper drives the transition gear moves, the transition gear drive center section of thick bamboo gear revolve, work as center section of thick bamboo gear revolve to fixed position after, it drives to advance the area action wheel to advance the area motion will cutting the subassembly cuts the paper tape and sees out export deflector, simultaneously the stub of paper tape reachs photoelectric sensing ware department, thereby the realization is right after the paper tape advances line location in proper order continuous output fixed length the paper tape.

2. A paper tape feeding and length-fixing cutting device as claimed in claim 1, wherein the tape feeding assembly includes an inlet guide wheel, a paper feeding tape inlet, a positioning plate adjusting sprocket, a positioning plate, a brush spring for controlling the tension of the paper tape feeding and a paper pressing brush, the inlet guide wheel, the paper feeding tape inlet, the positioning plate, the brush spring and the paper pressing brush are all mounted on the fixing plate, the positioning plate adjusting sprocket is disposed on the positioning plate, the paper tape is reversed by the inlet guide wheel to enter the paper feeding tape inlet, the positioning plate adjusting sprocket is in transmission connection with the positioning plate, the positioning plate adjusts the front and rear positioning positions by the positioning plate adjusting sprocket, and the brush spring for controlling the tension of the paper tape feeding is elastically connected with the paper pressing brush.

3. A paper tape conveying and length-fixing cutting device as claimed in claim 1, wherein the cutting assembly comprises a cutter inlet, a cutter outlet, a paper tape reversing roller, a lower cutter, an upper cutter, a cutter inlet upper guide plate, a cutter inlet lower guide plate, an upper cutter fixing seat, a tension spring, a cylinder and a swing arm, the lower cutter is mounted on the fixing plate, the upper cutter is mounted on the upper cutter fixing seat, the cutter inlet lower guide plate and the cutter inlet upper guide plate are matched to form a plane reference for cutting by the lower cutter and the lower cutter, the paper tape is conveyed into the cutter inlet through the paper tape, the paper tape is reversed to enter the cutter outlet through the paper tape reversing roller, one end of the swing arm is mounted on the fixing plate, the other end of the swing arm is movably connected with the cylinder, one end of the upper cutter fixing seat is connected to the swing arm through a hinge, the other end with the extension spring is connected to make the knife face laminating of going up the cutter is in the knife face of cutter down, the cylinder is installed on the fixed plate, works as the cylinder drive swing arm reciprocating swing makes go up the cutter for lower cutter realizes upper and lower shearing movement.

4. A paper web feeding and cut-to-length apparatus as claimed in claim 3, wherein said cutter inlet includes a cutter inlet pulley and a cutter inlet, and said paper web is fed by said paper feed belt into said cutter inlet pulley and said cutter inlet roller.

5. A paper tape feeding and length fixing cutting apparatus as claimed in claim 3, wherein said cutter exit includes a cutter exit pulley and a cutter exit roller, and said paper tape is fed into said cutter exit pulley and said cutter exit roller by said paper feed tape.

6. A paper tape feeding and length cutting apparatus as claimed in claim 2, wherein said paper tape inlet includes a tape inlet wheel and an inlet guide plate, said paper tape being rotated by said inlet guide into said tape inlet wheel and said inlet guide plate.

7. A web-feeding and cut-to-length device as recited in claim 1, wherein said adjustable center tube length adjustment assembly further includes a plurality of web-winding rollers mounted on said fixed plate, said photo-sensor being mounted on said fixed plate.

8. A paper tape feeding and cut-to-length device as recited in claim 1 further comprising a tape follower roller for winding the tape, the tape follower roller being mounted on the mounting plate.

9. A paper tape feeding and length fixing and cutting device as claimed in claim 2, wherein a plurality of positioning shafts are mounted on the positioning plate, and the positioning plate adjusting sprocket is movably connected with the positioning plate through the plurality of positioning shafts.

10. The paper tape conveying and fixed-length cutting device as claimed in claim 9, wherein the paper roll fixing assembly further comprises a paper roll and a connecting plate, the paper tape is sleeved on the paper roll, the connecting plate is movably connected with the paper roll, and the positioning plate is fixedly connected with the connecting plate.

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