CN221739481U - Four-blade knife-type paper cutting and origami mechanism - Google Patents

Abstract

The utility model relates to the technical field of paper processing equipment, and proposes a four-blade paper cutting and folding mechanism, including a roller body and a folding unit arranged on the roller body, each folding unit includes a paper cutting air suction channel and a paper folding air suction channel arranged in the roller body, and also includes a cutting knife groove and a paper folding groove arranged on the side wall of the roller body, a paper cutting air suction hole arranged on the periphery of the cutting knife groove and connected to the paper cutting air suction channel, and a paper folding air suction hole arranged on the periphery of the paper folding groove and connected to the paper folding air suction channel. The key is: four folding units are arranged on the roller body, all folding units are evenly arranged along the circumferential direction of the roller body, and the cutting knife grooves and paper folding grooves of adjacent folding units are staggered. The utility model solves the problems of the roller body rotating at a high speed, the ventilation frequency at a high speed, the motor speed of the air extraction device at a high speed, and the power at a high power in the related art.

Description

Four-blade knife-type paper cutting and origami mechanism

Technical Field

The utility model relates to the technical field of paper processing equipment, in particular to a four-blade type paper cutting and folding mechanism.

Background Art

The folding roller is an indispensable mechanism on the paper folding machine. A folding unit is arranged on the roller body of the folding roller. Each folding unit includes a paper cutting suction channel and a paper folding suction channel arranged in the roller body, and also includes a cutting knife groove and a paper folding groove arranged on the side wall of the roller body, a paper cutting suction hole arranged on the periphery of the cutting knife groove and connected to the paper cutting suction channel, and a paper folding suction hole arranged on the periphery of the paper folding groove and connected to the paper folding suction channel. A vacuum valve connected to an external air suction device is arranged at at least one end of the roller body. As the roller body rotates, each air suction channel in the roller body is periodically connected or disconnected with the air suction device. The existing roller body is generally provided with three folding units, the rotation speed of the roller body is fast, the ventilation frequency is fast, and the motor speed of the air suction device is fast and the power is large.

Utility Model Content

The utility model provides a four-blade paper cutting and folding mechanism, which solves the problems in the related art that the rotation speed of the roller body is fast, the ventilation frequency is fast, the motor rotation speed of the air extraction device is fast, and the power is large.

The technical scheme of the utility model is as follows: a four-blade paper cutting and folding mechanism comprises a roller body and a folding unit arranged on the roller body, each folding unit comprises a paper cutting air suction channel and a paper folding air suction channel arranged in the roller body, and also comprises a cutting knife groove and a paper folding groove arranged on the side wall of the roller body, a paper cutting air suction hole arranged on the periphery of the cutting knife groove and connected to the paper cutting air suction channel, and a paper folding air suction hole arranged on the periphery of the paper folding groove and connected to the paper folding air suction channel. The key lies in that four folding units are arranged on the roller body, all the folding units are evenly arranged along the circumferential direction of the roller body, and the cutting knife grooves and paper folding grooves of adjacent folding units are staggered.

The radius r of the roller body is increased to 111.65 mm, and the distance between the axis of the paper cutting suction channel and the axis of the roller body and the distance between the axis of the paper folding suction channel and the axis of the roller body are equal, both d1, d1:r=(53-55):100.

The central angle α of the folding groove is 5-7°, the opening width of the folding groove increases linearly from one end close to the axis of the roller body to the other end, the ratio of the maximum depth of the folding groove to the radius of the roller body is (3-4):100, and the ratio of the depth of the cutting groove to the radius of the roller body is (11-13):100.

The paper cutting air suction channel and the paper folding air suction channel both run through the length direction of the roller body and their axes are parallel to the axis of the roller body. The mechanism also includes a vacuum valve arranged at at least one end of the roller body. The vacuum valve is provided with a paper cutting air extraction hole for communicating with the paper cutting air suction channel and a paper folding air extraction hole for communicating with the paper folding air suction channel. The paper cutting air extraction hole and the paper folding air extraction hole are both connected to the exhaust device by means of a sealing cover sealed outside the vacuum valve.

The vacuum valve and the roller body are detachably connected.

At least three screw holes evenly arranged along the circumferential direction are provided on the end face of the roller body, and a through hole penetrating the thickness direction of the vacuum valve is provided. A locking bolt is arranged at the through hole, and the screw rod of the locking bolt passes through the through hole and is threadedly connected with the screw hole on the roller body.

A sink groove is provided on the vacuum valve, and a nut of a locking bolt is located in the sink groove.

A supporting shaft is arranged at the end of the roller body, the diameter of the supporting shaft is smaller than the diameter of the roller body, and the vacuum valve is sleeved on the supporting shaft.

The sealing cover includes a shell which is sleeved on the roller body and forms a rotational fit with the roller body. The interior of the shell is a hollow air inlet cavity. An air outlet pipe for connecting with an air extraction device is arranged on the side wall of the shell. A first air inlet for connecting with a paper cutting air extraction hole and a second air inlet for connecting with a paper folding air extraction hole are arranged on the end surface of the shell facing the vacuum valve.

The working principle and beneficial effects of the utility model are as follows: four folding units are arranged on the roller body, all of which are evenly arranged along the circumferential direction of the roller body, and the cutting grooves and paper folding grooves of adjacent folding units are staggered, so that the diameter of the roller body becomes larger, the rotation speed of the roller body becomes slower, the ventilation frequency becomes slower, and the motor speed of the exhaust device becomes slower, so that a small vacuum pump can be used and the power can be reduced by 15W.

BRIEF DESCRIPTION OF THE DRAWINGS

The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

FIG1 is a schematic structural diagram of the utility model in one direction.

FIG. 2 is an enlarged view of A in FIG. 1 .

FIG. 3 is a schematic structural diagram of the utility model in another direction.

FIG. 4 is a front view of the present utility model.

FIG. 5 is a side view of the utility model.

FIG. 6 is a schematic structural diagram of the sealing cover in the present invention.

In the figure: 1. roller body, 2. paper cutting air suction channel, 3. paper folding air suction channel, 4. cutting knife groove, 5. paper folding groove, 6. paper cutting air suction hole, 7. paper folding air suction hole, 8. vacuum valve, 9. paper cutting air extraction hole, 10. paper folding air extraction hole, 11. screw hole, 12. through hole, 13. support shaft, 14. shell, 15. air outlet pipe, 16. first air inlet, 17. second air inlet.

DETAILED DESCRIPTION

The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

In a specific embodiment, as shown in FIG1, FIG2 and FIG3, a four-blade paper cutting and folding mechanism comprises a roller body 1 and a folding unit arranged on the roller body 1, each folding unit comprises a paper cutting air suction channel 2 and a paper folding air suction channel 3 arranged in the roller body 1, and also comprises a cutting knife groove 4 and a paper folding groove 5 arranged on the side wall of the roller body 1, a paper cutting air suction hole 6 arranged on the periphery of the cutting knife groove 4 and connected to the paper cutting air suction channel 2, and a paper folding air suction hole 7 arranged on the periphery of the paper folding groove 5 and connected to the paper folding air suction channel 3. Four folding units are arranged on the roller body 1, and all folding units are evenly arranged along the circumferential direction of the roller body 1, and the cutting knife grooves 4 and the paper folding grooves 5 of adjacent folding units are arranged alternately. In this way, while ensuring that the spacing between adjacent folding units does not become smaller, the diameter of the roller body 1 becomes larger, the rotation speed of the roller body 1 becomes slower, the ventilation frequency becomes slower, and the motor speed of the exhaust device becomes slower, so that a small vacuum pump can be used, and the power can be reduced by 15W.

As a further improvement of the present invention, the radius r of the roller body 1 is increased to 111.65 mm, and the spacing between the axis of the paper cutting suction channel 2 and the axis of the roller body 1 and the spacing between the axis of the paper folding suction channel 3 and the axis of the roller body 1 are equal, both d1, d1:r=(53-55):100 and preferably 15:27.875. The diameter of the roller body is large enough to ensure that the spacing between adjacent folding units will not become smaller after adding folding units, so as to achieve reliable folding.

As a further improvement of the utility model, the central angle α of the paper folding groove 5 is 5-7° and preferably 5.96°, the opening width of the paper folding groove 5 increases linearly from one end close to the axis of the roller body 1 to the other end, the ratio of the maximum depth of the paper folding groove 5 to the radius of the roller body 1 is (3-4): 100 and preferably 0.875: 27.875, and the ratio of the depth of the cutting knife groove 4 to the radius of the roller body 1 is (11-13): 100 and preferably 3.32: 27.875. As shown in Figures 1, 3, 4 and 5, the paper folding groove 5 has a sufficiently large width and depth to ensure the folding of paper, and the cutting knife groove 4 has a sufficiently large depth to ensure the reliable connection between the cutting knife and the roller body 1.

As a further improvement of the utility model, the paper cutting air suction channel 2 and the paper folding air suction channel 3 both penetrate the length direction of the roller body 1 and the axes of the two are parallel to the axis of the roller body 1. The mechanism also includes a vacuum valve 8 arranged at at least one end of the roller body 1. The vacuum valve 8 is provided with a paper cutting air extraction hole 9 for communicating with the paper cutting air suction channel 2 and a paper folding air extraction hole 10 for communicating with the paper folding air suction channel 3. The paper cutting air extraction hole 9 and the paper folding air extraction hole 10 are both connected to the air extraction device by means of a sealing cover sealed outside the vacuum valve 8. As shown in Figures 1, 3, 4 and 5, the paper cutting air extraction hole 9, the cutting knife groove 4 and the paper cutting air suction channel 2 are all arranged one by one in the radial direction of the roller body 1, and the paper folding air extraction hole 10, the paper folding groove 5 and the paper folding air suction channel 3 are all arranged one by one in the radial direction of the roller body 1. As the roller body 1 rotates, the paper cutting air extraction holes 9 and the paper folding air extraction holes 10 on the vacuum valve 8 are periodically connected to the air inlet cavity on the sealing cover. When the paper cutting air extraction holes 9 are connected to the air inlet cavity on the sealing cover, the air extraction device absorbs the paper at the cutter groove 4 of the roller body 1 through the air inlet cavity of the sealing cover, the paper cutting air extraction holes 9, the paper cutting air suction channel 2, and the paper cutting air suction holes 6, and the cutter in the cutter groove 4 cuts the paper; when the paper folding air extraction holes 10 are connected to the air inlet cavity on the sealing cover, the air extraction device absorbs the paper at the paper folding groove 5 of the roller body 1 through the air inlet cavity of the sealing cover, the paper folding air extraction holes 10, the paper folding air suction channel 3, and the paper folding air suction holes 7, so as to realize the folding of the paper. The vacuum valve 8 can prevent the end face of the roller body 1 from directly contacting the sealing cover and being worn during repeated rotation. The vacuum valve 8 is detachably connected to the roller body 1, which is convenient for maintenance and replacement.

As a further improvement of the utility model, at least three screw holes 11 are evenly arranged in the circumferential direction on the end face of the roller body 1, and a through hole 12 is provided on the vacuum valve 8 that runs through the thickness direction thereof, and a locking bolt is provided at the through hole 12, and the screw of the locking bolt passes through the through hole 12 and is threadedly connected with the screw hole 11 on the roller body 1. As shown in Fig. 3 and Fig. 5, four screw holes 11 are provided on the end face of the roller body 1, and the vacuum valve 8 and the roller body 1 are locked together with four locking bolts, so that the connection is firm and reliable, and the assembly and disassembly are convenient and quick, saving time and effort.

As a further improvement of the present invention, a sink groove is provided on the vacuum valve 8, and the nut of the locking bolt is located in the sink groove, so that the surface of the vacuum valve 8 is flat, neat and beautiful.

As a further improvement of the present invention, a support shaft 13 is provided at the end of the roller body 1, the diameter of the support shaft 13 is smaller than the diameter of the roller body 1, and the vacuum valve 8 is sleeved on the support shaft 13. As shown in Figures 1, 3, 4 and 5, the support shaft 13 facilitates the installation of the roller body 1 and the connection with the power equipment, and can also play a positioning role for the vacuum valve 8.

As a further improvement of the present utility model, the sealing cover includes a shell 14 which is sleeved on the roller body 1 and forms a rotational fit with the roller body 1. The interior of the shell 14 is a hollow air inlet cavity. An air outlet pipe 15 for communicating with the air extraction device is provided on the side wall of the shell 14. A first air inlet 16 for communicating with the paper cutting air extraction hole 9 and a second air inlet 17 for communicating with the paper folding air extraction hole 10 are provided on the end surface of the shell 14 facing the vacuum valve 8. As shown in FIG6 , a first air inlet 16 and a second air inlet 17 are provided on the shell 14. When the paper cutting air extraction hole 9 is connected to the first air inlet 16, the paper folding air extraction hole 10 adjacent to the paper cutting air extraction hole 9 is connected to the second air inlet 17. As shown in Figures 1 and 6, as the roller body 1 rotates, the paper cutting air extraction hole 9 on the vacuum valve 8 is periodically connected to the first air inlet 16 on the shell 14, and the paper folding air extraction hole 10 is periodically connected to the second air inlet 17 on the shell 14. When the paper cutting air extraction hole 9 is connected to the air inlet cavity on the sealing cover through the first air inlet 16, the air extraction device adsorbs the paper on the cutting knife groove 4 of the roller body 1 through the air outlet pipe 15, the air inlet cavity, the first air inlet 16, the paper cutting air extraction hole 9, the paper cutting air suction channel 2, and the paper cutting air suction hole 6 of the sealing cover, and the cutting knife in the cutting knife groove 4 cuts the paper; when the paper folding air extraction hole 10 is connected to the air inlet cavity on the sealing cover through the second air inlet 17, the air extraction device adsorbs the paper on the paper folding groove 5 of the roller body 1 through the air outlet pipe 15, the air inlet cavity, the paper folding air extraction hole 10, the paper folding air suction channel 3, and the paper folding air suction hole 7 of the sealing cover to achieve folding of the paper.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A four-blade paper cutting and folding mechanism, comprising a roller body (1), and a folding unit arranged on the roller body (1), each folding unit comprising a paper cutting air suction channel (2) and a paper folding air suction channel (3) arranged in the roller body (1), and further comprising a cutting knife groove (4) and a paper folding groove (5) arranged on a side wall of the roller body (1), a paper cutting air suction hole (6) arranged on the periphery of the cutting knife groove (4) and connected to the paper cutting air suction channel (2), and a paper folding air suction hole (7) arranged on the periphery of the paper folding groove (5) and connected to the paper folding air suction channel (3), characterized in that: four folding units are arranged on the roller body (1), all the folding units are evenly arranged along the circumferential direction of the roller body (1), and the cutting knife grooves (4) and paper folding grooves (5) of adjacent folding units are arranged in a staggered manner. 2. The four-blade paper cutting and folding mechanism according to claim 1 is characterized in that: the radius r of the roller body (1) is increased to 111.65 mm, and the distance between the axis of the paper cutting suction channel (2) and the axis of the roller body (1) and the distance between the axis of the paper folding suction channel (3) and the axis of the roller body (1) are equal, both are d1, d1:r=15:27.875=(53-55):100. 3. The four-blade paper cutting and folding mechanism according to claim 1 is characterized in that: the central angle α of the paper folding groove (5) is 5-7°, the opening width of the paper folding groove (5) increases linearly from one end close to the axis of the roller body (1) to the other end, the ratio of the maximum depth of the paper folding groove (5) to the radius of the roller body (1) is (3-4):100, and the ratio of the depth of the cutting knife groove (4) to the radius of the roller body (1) is (11-13):100. 4. The four-blade paper cutting and folding mechanism according to claim 1 is characterized in that: the paper cutting air suction channel (2) and the paper folding air suction channel (3) both penetrate the length direction of the roller body (1) and the axes of the two are parallel to the axis of the roller body (1), and the mechanism also includes a vacuum valve (8) arranged at at least one end of the roller body (1), and the vacuum valve (8) is provided with a paper cutting air extraction hole (9) for communicating with the paper cutting air suction channel (2), and a paper folding air extraction hole (10) for communicating with the paper folding air suction channel (3), and the paper cutting air extraction hole (9) and the paper folding air extraction hole (10) are both connected to the exhaust device by means of a sealing cover sealed outside the vacuum valve (8). 5. The four-blade paper cutting and folding mechanism according to claim 4, characterized in that the vacuum valve (8) and the roller body (1) are detachably connected. 6. The four-blade paper cutting and folding mechanism according to claim 4 is characterized in that: at least three screw holes (11) are evenly arranged in the circumferential direction on the end surface of the roller body (1), a through hole (12) is opened on the vacuum valve (8) and passes through the thickness direction thereof, a locking bolt is arranged at the through hole (12), and the screw rod of the locking bolt passes through the through hole (12) and is threadedly connected with the screw hole (11) on the roller body (1). 7. The four-blade paper cutting and folding mechanism according to claim 6, characterized in that a recessed groove is provided on the vacuum valve (8), and the nut of the locking bolt is located in the recessed groove. 8. The four-blade paper cutting and folding mechanism according to claim 4 is characterized in that a support shaft (13) is provided at the end of the roller body (1), the diameter of the support shaft (13) is smaller than the diameter of the roller body (1), and the vacuum valve (8) is sleeved on the support shaft (13). 9. The four-blade paper cutting and folding mechanism according to claim 4 is characterized in that: the sealing cover comprises a shell (14) which is sleeved on the roller body (1) and forms a rotational fit with the roller body (1), the interior of the shell (14) is a hollow air inlet cavity, an air outlet pipe (15) for communicating with an exhaust device is arranged on the side wall of the shell (14), and a first air inlet (16) for communicating with the paper cutting exhaust hole (9) and a second air inlet (17) for communicating with the paper folding exhaust hole (10) are provided on the end surface of the shell (14) facing the vacuum valve (8).