CN111975847B

CN111975847B - Paperboard slitting device

Info

Publication number: CN111975847B
Application number: CN202010890629.3A
Authority: CN
Inventors: 刘鑫; 尤育华; 陈日抄; 张立奔
Original assignee: Zhejiang Saili Intelligent Manufacturing Co ltd
Current assignee: Zhejiang Saili Intelligent Manufacturing Co ltd
Priority date: 2020-08-29
Filing date: 2020-08-29
Publication date: 2023-12-19
Anticipated expiration: 2040-08-29
Also published as: CN111975847A

Abstract

The invention relates to a paperboard slitting device which can ensure slitting precision when paperboards with different thicknesses are slit. The paperboard slitting device comprises a machine base, a slitting roller and a paper pressing belt, wherein the paper pressing belt is wound on a guide roller and acts on the slitting roller, and a feeding port and a discharging port are formed between the paper pressing belt and the slitting roller, and the paperboard slitting device is characterized in that: the guide roller both ends that are located feed inlet department are all rotatable to be installed on the floating plate, and the floating plate can slide from top to bottom and set up, and the floating plate has the regulation window, is equipped with the eccentric wheel in the regulation window, and the upper face of regulation window is tangent with the upper end point of eccentric wheel, and the lower face of regulation window is tangent with the lower end point of eccentric wheel. The paperboard cutting device can completely and synchronously move up and down through the connecting rod and the two deflection wheel structures, so that the guide rollers arranged on the two floating plates can also move up and down in an absolute horizontal posture, and the paperboard is prevented from shifting in the conveying process.

Description

Paperboard slitting device

Technical Field

The invention relates to a paperboard processing machine, in particular to a paperboard cutting device.

Background

The paperboard dividing and cutting machine is a device for dividing and cutting paperboards. As the core mechanism of the paperboard cutting machine, the structure of the paperboard cutting device determines the quality of paperboard cutting. The paper board cutting device generally comprises a cutting roller, a paper pressing belt and a cutting knife, wherein the paper pressing belt is pressed on the cutting roller through a guide roller, the cutting knife is positioned on the rear side of the cutting roller, a feeding hole and a discharging hole are formed between the cutting roller and the paper pressing belt, the paper board enters from the feeding hole, the paper pressing belt and the paper pressing belt roll over the paper board along with rotation of the cutting roller, the paper board is cut by the cutting knife, and finally the paper board comes out from the discharging hole, so that paper board cutting is completed. Because the guide roller and the slitting roller at the feed inlet need to keep a certain distance, the paper board can be well fed, the paper pressing belt at the feed inlet can not press the paper board, in order to enable the paper board to stably enter from the feed inlet, the guide roller at the feed inlet is generally fixedly provided with a fixed shaft sleeve, and the paper board is fed into the feed inlet under pressure through the fixed shaft sleeve and the slitting roller at a proper distance. However, the thickness of the cardboard is different, and when the thickness of the cardboard is changed, the guide roller with the fixed shaft sleeve is also adapted to be moved up and down. For this purpose, the existing guide rollers are generally mounted on a floating plate which can float up and down under the action of springs. The floating plate is provided with a left floating plate and a right floating plate, and the two floating plates are correspondingly pressed by two springs. However, the left and right springs cannot be completely consistent, so that the pressures of the plurality of fixed shaft sleeves on one guide roller to the paper board are not completely the same, the conveying direction of the paper board is offset due to slight difference of the pressures, and the cutting of the paper board by the cutting knife is also offset, so that the rejection rate is increased.

Disclosure of Invention

In view of the defects in the prior art, the invention innovatively provides a paperboard slitting device capable of ensuring slitting precision when the paperboards with different thicknesses are slit.

The paperboard slitting device comprises a machine base, a slitting roller and a paper pressing belt, wherein the paper pressing belt is wound on a guide roller and acts on the slitting roller, and a feeding port and a discharging port are formed between the paper pressing belt and the slitting roller, and the paperboard slitting device is characterized in that: the guide roller two ends that are located feed inlet department are all rotatable installs on the floating plate, the floating plate can slide from top to bottom and set up, the floating plate has the regulation window, be equipped with the eccentric wheel in the regulation window, the higher authority face of regulation window is tangent with the upper end point of eccentric wheel, the lower authority face of regulation window is tangent with the lower end point of eccentric wheel, the distance between the left side face of regulation window to the right side face is greater than the external diameter of eccentric wheel, and two eccentric wheels symmetry sets up and connect on the connecting rod about, the connecting rod is rotatable to be installed on the fixed plate, the fixed plate is connected on the frame.

The floating plate can be arranged on the fixed plate in a vertical sliding way.

The difference between the distance between the left side surface and the right side surface of the adjusting window and the outer diameter of the eccentric wheel is equal to the eccentric amount of the eccentric wheel.

The eccentric wheel is composed of an eccentric inner wheel and a supporting bearing, the supporting bearing is sleeved on the eccentric inner wheel, and the eccentric inner wheel is connected with the connecting rod.

A paper pressing bearing is sleeved on the guide roller positioned at the feed inlet or a paper pressing roller is movably sleeved on the guide roller.

The cutting device comprises a cutting knife, wherein the cutting knife is arranged at the rear side of a cutting roller, a soft contact layer is stuck on the roller surface of the cutting roller, and the knife tip of the cutting knife is contacted with the soft contact layer.

The soft contact layer is an adhesive tape.

The machine seat is provided with a guide rod parallel to the axis of the slitting roller, the guide rod is slidably sleeved with a tape roll seat, and the tape roll seat is rotatably provided with a tape roll.

The front side of the guide roller at the feed inlet is provided with a support shaft, and the support shaft is provided with a damping wheel.

According to the paperboard cutting device provided by the invention, the floating plates at the left side and the right side can completely and synchronously move up and down through the connecting rod and the two deflection wheel structures, so that the guide rollers arranged on the two floating plates can also move up and down in an absolute horizontal posture, and all the paper pressing wheels arranged on the guide rollers can press the paperboard with the same pressure, thereby ensuring that the paperboard cannot deviate in the conveying process.

Drawings

FIG. 1 is a perspective view of a paperboard slitter;

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic view of a partial structure of a cardboard cut;

FIG. 4 is a schematic diagram of floating plate float adjustment;

FIG. 5 is a schematic structural view of an eccentric;

fig. 6 is a partial enlarged view at B in fig. 1.

Detailed Description

As shown in fig. 1 and 2, the paperboard slitting device comprises a machine base 1, a slitting roller 2 and a paper pressing belt 5, wherein the paper pressing belt 5 is wound on a plurality of guide rollers 3 and acts on the slitting roller 2 in a tightening state, and a feed inlet and a discharge outlet are arranged between the paper pressing belt 5 and the slitting roller 2; as shown in fig. 3, both ends of the guide roller 3 at the feed inlet are rotatably mounted on the floating plates 9 (i.e., one end of the guide roller 3 is rotatably mounted on one floating plate 9, and the other end is rotatably mounted on the other floating plate 9), and the floating plates 9 are slidably disposed up and down (realized by a guide rail, a guide rod or a guide groove); as shown in fig. 4, the floating plate 9 is provided with an adjusting window 90, and an eccentric wheel 11 is arranged in the adjusting window 90; the upper surface of the adjusting window 90 is tangential to the upper end point of the eccentric wheel 11, the lower surface of the adjusting window 90 is tangential to the lower end point of the eccentric wheel 11 (i.e. the upper surface and the lower surface of the adjusting window 90 of the floating plate 9 limit the eccentric wheel 11 to move up and down relative to the floating plate 9), and the distance from the left surface to the right surface of the adjusting window 90 is larger than the outer diameter of the eccentric wheel 11 (i.e. the eccentric wheel 11 can move horizontally relative to the floating plate 9 in the adjusting window 90); in addition, the left and right eccentric wheels 11 are symmetrically arranged and connected to the connecting rod 12 (herein, "symmetrically arranged" means that the sizes, eccentric amounts, and placement angles of the left and right eccentric wheels 11 are the same), and the connecting rod 12 is rotatably mounted on the fixing plate 10, and the fixing plate 10 is connected to the base 1.

The working principle of the invention is as follows: as shown in fig. 4, when a certain batch of paper boards with increased thickness enter between the slitting roller 2 and the guide roller 3 positioned at the feeding port, the paper boards give an upward force to the guide roller 3, so that the guide roller 3 is lifted upwards, because the guide roller 3 is rotatably connected to the floating plate 9 and the floating plate 9 can slide up and down, the floating plate 9 has a tendency to float upwards, because the eccentric 11 is positioned in the adjusting window 90 of the floating plate 9, the floating plate 9 gives an upward force to the eccentric 11, because the rotating point of the eccentric 11 is eccentric, and the lower side surface of the adjusting window 90 of the floating plate 9 acts on the lower end point of the eccentric 11, the acting force of the lower side surface of the adjusting window 90 to the eccentric 11 is not on a vertical line with the rotating point of the eccentric 11, and in addition, the connecting rod 12 carrying the eccentric 11 can only rotate under the upward acting force of the floating plate 9 (the eccentric 11 rotates with a proper space between the left side and the right side of the adjusting window 90), and the specific eccentric 11 rotates downwards by a certain distance of the eccentric 11, as in a short distance as in fig. 4, the eccentric 11 rotates downwards along with the floating end of the guide roller 3; when the paperboard is restored to the original thickness, under the action of gravity, the eccentric wheel 11 rotates upwards under the action of the upper side surface of the adjusting window 90 of the floating plate 9, specifically, the short distance end of the eccentric wheel 11 rotates upwards, and the long distance end of the eccentric wheel 11 rotates downwards, so that the floating plate 9 can move downwards together with the guide roller 3. Because the left eccentric wheel 11 and the right eccentric wheel 11 are arranged on one connecting rod, and the left eccentric wheel 11 and the right eccentric wheel 11 are symmetrically arranged, the floating plates 9 on the left side and the right side can completely and synchronously move up and down, the guide rollers 3 arranged on the two floating plates 9 can also move up and down in an absolute horizontal posture, and all paper pressing wheels arranged on the guide rollers 3 can press on the paper board with the same pressure, so that the paper board is prevented from shifting in the conveying process.

As described above, the floating plate 9 can move up and down through the guide rail, the guide rod or the guide groove, and preferably, the floating plate 9 is slidably arranged in the sliding groove of the fixed plate 10, and the floating plate 9 moves up and down in the sliding groove of the fixed plate 10, so that the structure is simpler and the manufacturing cost is lower. As described above, the connecting rod 12 is rotatably installed on the fixing plate 10, and the fixing plate 10 is connected to the base 1, and this structure makes full use of the fixing plate 10, and thus the integration is better, and thus the structure is more reasonable and the manufacturing cost is lower.

To limit the floating plate 9 to float only to a certain extent, the floating plate 9 adjusts the difference between the distance between the left side surface and the right side surface of the window 90 and the outer diameter of the eccentric 11 to be equal to the eccentric amount of the eccentric 11. The maximum floating distance of the floating plate 9 is thus the same as the eccentric amount of the eccentric 11.

As shown in fig. 5, the eccentric wheel 11 may be a common eccentric wheel or an eccentric bearing, and preferably, the eccentric wheel 11 of the present invention is composed of an eccentric inner wheel 110 (common eccentric wheel) and a supporting bearing 111 (common bearing), the supporting bearing 111 is sleeved on the eccentric inner wheel 110, and the eccentric inner wheel 110 is connected with the connecting rod 12. Since this structure is in contact with the floating plate 9 through the support bearing 111, the support bearing 111 can rotate, so that both have smaller friction force and smaller wear, and the problem of precision is not easy to occur.

As described in the background art, a fixed sleeve (or a paper pressing wheel) is fixedly installed on the guide roller 3 of the feeding port, and a proper distance is kept between the fixed sleeve and the slitting roller 2, so that the paper board enters the feeding port under pressure through the fixed sleeve. However, after long-time use and observation, it was found that there was a problem that was easily ignored: because the fixed shaft sleeve is fixedly arranged on the guide roller (the angular speed of the fixed shaft sleeve and the fixed shaft sleeve is the same), and the diameter of the fixed shaft sleeve is larger than that of the guide roller, the surface linear speed of the fixed shaft sleeve is larger than that of the guide roller, and the linear speed of the paper pressing belt and the linear speed of the slitting roller are the same as those of the guide roller, so that a speed difference exists between the conveying speed of the fixed shaft sleeve above the paper board and the conveying speed of the slitting roller below the paper board, and as the paper board gradually enters from the feeding hole, friction force exists among the slitting roller, the fixed shaft sleeve and the paper pressing belt, the paper board is deviated by the friction force, and finally the paper board slitting precision is influenced.

For this purpose, the guide roller 3 at the feed inlet is sleeved with a paper pressing bearing 4 or a paper pressing roller is movably sleeved. It should be noted that, after the platen bearing 4 may be directly mounted on the guide roller 3, a sleeve may be mounted on the guide roller 3 first, and then the platen bearing 4 may be mounted on the sleeve; the paper pressing roller (common roller) can be arranged on the guide roller 3 through a bearing and can be directly sleeved on the guide roller 3, so long as the paper pressing roller can rotate. Of course, the paper pressing bearing 4 is simpler in structure, lower in cost and better in effect due to small friction force.

Through having paper pressing bearing 4 or movable sleeve to have paper pressing gyro wheel on guide roll 3, let paper pressing bearing 4 or rotatable paper pressing gyro wheel press the cardboard to rotate along with the cardboard, only let paper pressing belt 5 and slitting roller 2 give cardboard conveying force from this, and paper pressing bearing 4 or rotatable paper pressing gyro wheel only press the cardboard, and can not give the cardboard conveying force, just so can guarantee that the cardboard can not take place the skew in the conveying, thereby guarantee slitting precision.

As shown in fig. 2, the paperboard slitting device further comprises a slitting knife 6, the slitting knife 6 is arranged at the rear side of the slitting roller 2, and as shown in fig. 3, a soft contact layer 20 is attached to the roller surface of the slitting roller 2, and the knife tip of the slitting knife 6 is in contact with the soft contact layer 20.

When the paper cutting machine works, paper boards enter from a feed inlet between the paper pressing belt 5 and the cutting roller 2, the cutting roller 2 rotates, the paper boards are clamped between the paper pressing belt 5 and the cutting roller 2 and move along the cambered surface of the cutting roller 2, and as the soft contact layer 20 is stuck on the roller surface of the cutting roller 2 (the paper boards are positioned above the soft contact layer 20), the soft contact layer 20 is in contact with the cutting knife 6 arranged at the rear side of the cutting roller 2, and therefore the knife tips of the cutting knife 6 cut the paper boards. Through this kind of structure to cutting the cardboard, the tangent plane of cardboard is smoother, and is more pleasing to the eye.

The soft contact layer 20 may be an adhesive tape, a rubber layer, a cotton layer, or the like, as long as it is a soft material that can be used to pad the cardboard and allow the cutting edge of the dicing blade 6 to pass through the cardboard.

As described above, the soft contact layer 20 may be an adhesive tape, and for convenience of applying the adhesive tape, the adhesive tape is applied to be more flat and flat, as shown in fig. 2, the guide rod 8 parallel to the axis of the slitting roller 2 is mounted on the machine base 1, the adhesive tape roll seat 80 is slidably sleeved on the guide rod 8, and the adhesive tape roll 81 is rotatably arranged on the adhesive tape roll seat 80. When the adhesive tape is required to be adhered, the adhesive tape is automatically pulled out to be adhered to the slitting roller 2 only by pulling out one end of the adhesive tape on the adhesive tape roll 81 to be adhered to the slitting roller 2, then the slitting roller 2 rotates, and after one or more circles of adhesive tape are adhered, the adhesive tape is manually sheared off. By this structure, it is ensured that the adhesive tape can be more smoothly attached to the slitting roller 2.

Finally, it should be noted that the front side of the guide roller 3 at the feed port is provided with a support shaft 7, and as shown in fig. 6, the support shaft 7 is provided with a damping wheel 70. The paper feeding mechanism pushes the paper board to enter the paper board cutting device through one pushing block, and the damping wheel 70 can give the paper board a reverse acting force due to the existence of the damping wheel 70, and the reverse acting force can drive the paper board to move towards the direction where the pushing block is located, so that the edge of the paper board and the pushing surface of the pushing block are always kept on the same surface, the paper board can enter the paper board cutting device along a straight line, the cutting precision of the paper board is higher, and the cutting quality is better.

Claims

1. Cardboard cutting device, including frame (1), slitting roller (2) and platen roller (5), platen roller (5) are around on guide roll (3) to on slitting roller (2), have feed inlet and discharge gate between platen roller (5) and slitting roller (2), its characterized in that: the guide roller (3) both ends that are located feed inlet department are all rotatable to be installed on floating board (9), floating board (9) slidable from top to bottom sets up, floating board (9) have regulation window (90), be equipped with eccentric wheel (11) in regulation window (90), the top face of regulation window (90) is tangent with the upper end point of eccentric wheel (11), the lower face of regulation window (90) is tangent with the lower end point of eccentric wheel (11), the distance between the left side face of regulation window (90) to the right is greater than the external diameter of eccentric wheel (11), and control two eccentric wheels (11) symmetry setting and connect on connecting rod (12), connecting rod (12) rotatable mounting is on fixed plate (10), fixed plate (10) are connected on frame (1).

2. The paperboard cutting apparatus of claim 1, wherein: the floating plate (9) can be arranged on the fixed plate (10) in a vertical sliding way.

3. The paperboard cutting apparatus of claim 1, wherein: the difference between the distance from the left side surface to the right side surface of the adjusting window (90) and the outer diameter of the eccentric wheel (11) is equal to the eccentric amount of the eccentric wheel (11).

4. The paperboard cutting apparatus of claim 1, wherein: the eccentric wheel (11) is composed of an eccentric inner wheel (110) and a supporting bearing (111), the supporting bearing (111) is sleeved on the eccentric inner wheel (110), and the eccentric inner wheel (110) is connected with the connecting rod (12).

5. The paperboard cutting apparatus of claim 1, wherein: a paper pressing bearing (4) is sleeved on the guide roller (3) at the feeding hole or a paper pressing roller is movably sleeved on the guide roller.

6. The paperboard cutting apparatus of claim 1, wherein: the cutting machine comprises a cutting knife (6), wherein the cutting knife (6) is arranged at the rear side of a cutting roller (2), a soft contact layer (20) is stuck on the roller surface of the cutting roller (2), and the knife tip of the cutting knife (6) is in contact with the soft contact layer (20).

7. The paperboard cutting apparatus of claim 6, wherein: the soft contact layer (20) is an adhesive tape.

8. The paperboard cutting apparatus of claim 6, wherein: the machine seat (1) is provided with a guide rod (8) parallel to the axis of the slitting roller (2), the guide rod (8) is slidably sleeved with a tape roll seat (80), and the tape roll seat (80) is rotatably provided with a tape roll (81).

9. The paperboard cutting apparatus of claim 1, wherein: the front side of the guide roller (3) at the feed inlet is provided with a support shaft (7), and the support shaft (7) is provided with a damping wheel (70).