CN212312161U

CN212312161U - Paperboard slitting device

Info

Publication number: CN212312161U
Application number: CN202021844394.6U
Authority: CN
Inventors: 刘鑫; 陈日超; 张立奔
Original assignee: Zhejiang Saili Machinery Co ltd
Current assignee: Zhejiang Saili Machinery Co ltd
Priority date: 2020-08-29
Filing date: 2020-08-29
Publication date: 2021-01-08
Anticipated expiration: 2030-08-29

Abstract

The utility model relates to a device is cut to cardboard that also can guarantee to cut precision when cutting different thickness cardboards. This kind of device is cut to cardboard is including the frame, cut roller and press the paper belt, press the paper belt around on the guide roll to be used in cutting on the roller, press the paper belt and cut and have feed inlet and discharge gate, its characterized in that between the roller: the two ends of the guide roller positioned at the feed inlet can be rotatably arranged on the floating plate, the floating plate can be arranged in a vertical sliding mode, the floating plate is provided with an adjusting window, an eccentric wheel is arranged in the adjusting window, the upper surface of the adjusting window is tangent to the upper end point of the eccentric wheel, and the lower surface of the adjusting window is tangent to the lower end point of the eccentric wheel. The paperboard slitting device has the advantages that the floating plates on 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 the paperboard is guaranteed not to shift in the conveying process.

Description

Paperboard slitting device

Technical Field

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

Background

The paperboard slitting machine is equipment for slitting paperboards. As a core mechanism of the paperboard slitting machine, the structure of the paperboard slitting device determines the slitting quality of the paperboard. The device is cut to cardboard is generally including dividing the cutting roller, the press paper belt and divide the cutter, the press paper belt passes through the direction roll-in and divides the cutting roller on, divide the cutter to be located the rear side of dividing the cutting roller, divide and have feed inlet and discharge gate between cutting roller and the press paper belt, the cardboard just enters from the feed inlet, along with dividing the rotation of cutting the roller, the press paper belt with cut the roll and overturn the cardboard, divide the cutter simultaneously and cut the cardboard, the cardboard comes out from the discharge gate at last, accomplish the cardboard from this and cut. Because the guide roll at the feed inlet and the slitting roll need to keep a certain distance to allow the paper boards to enter, the paper pressing belt at the feed inlet cannot press the paper boards, in order to allow the paper boards to stably enter from the feed inlet, a fixed shaft sleeve is generally fixedly installed on the guide roll at the feed inlet, and the paper boards enter the feed inlet under the pressure of the fixed shaft sleeve by keeping a proper distance between the fixed shaft sleeve and the slitting roll. However, the thickness of the cardboard is different, and when the thickness of the cardboard is changed, the guide roller mounted with the fixed bushing is also adjusted to move up and down adaptively. For this reason, the conventional guide roller is generally mounted on a floating plate which floats up and down by a spring. The floating plates are provided with a left floating plate and a right floating plate, and the two floating plates are correspondingly pressed through two springs. However, the left spring and the right spring cannot be completely consistent, so that the pressure of a plurality of fixed shaft sleeves on one guide roller on the paper board is not completely the same, the slight difference of the pressure can cause the deviation of the conveying direction of the paper board, and the deviation of the slitting knife on the paper board can also cause the deviation of the slitting, thereby increasing the rejection rate.

Disclosure of Invention

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

This kind of device is cut to cardboard is including the frame, cut roller and press the paper belt, press the paper belt around on the guide roll to be used in cutting on the roller, press the paper belt and cut and have feed inlet and discharge gate, its characterized in that between the roller: the guide roll both ends that are located feed inlet department all can rotate and install on the floating plate, the floating plate can slide the setting from top to bottom, the floating plate has the regulation window, be equipped with the eccentric wheel in the regulation window, the top surface of regulation window is tangent with the upper end of eccentric wheel, the lower extreme of regulation window is tangent with the lower extreme of eccentric wheel, the distance between the left surface of regulation window to the right surface 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 rotatable mounting is on the fixed plate, the fixed plate is connected on the frame.

The floating plate can be arranged on the fixed plate in a vertically sliding mode.

The difference between the distance between the left surface and the right 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.

The guide roller at the feed inlet is sleeved with a paper pressing bearing or movably sleeved with a paper pressing roller.

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

The soft contact layer is an adhesive tape.

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

A support shaft is arranged on the front side of the guide roller at the feed inlet, and a damping wheel is arranged on the support shaft.

According to the paperboard slitting device provided by the invention, the floating plates on 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 absolutely horizontal posture, and all paper pressing wheels arranged on the guide rollers can be pressed on 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 slitting machine;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is a partial structure diagram of the paperboard slitting;

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

FIG. 5 is a schematic structural diagram of an eccentric wheel;

fig. 6 is a partially enlarged view of fig. 1 at B.

Detailed Description

As shown in fig. 1 and 2, the paperboard slitting device comprises a 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 tightened state, and a feeding hole and a discharging hole are formed 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 can be 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 can be slidably arranged up and down (realized by guide rails, guide rods or guide grooves); as shown in fig. 4, the floating plate 9 has an adjusting window 90, and an eccentric wheel 11 is arranged in the adjusting window 90; the upper side surface of the adjusting window 90 is tangent to the upper end point of the eccentric wheel 11, the lower side surface of the adjusting window 90 is tangent to the lower end point of the eccentric wheel 11 (namely, the upper side surface and the lower side 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 between the left side surface and the right side surface of the adjusting window 90 is larger than the outer diameter of the eccentric wheel 11 (namely, 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 (the term "symmetrically arranged" refers to the same size, eccentricity and placement angle of the left and right eccentric wheels 11), and the connecting rod 12 is rotatably mounted on the fixing plate 10, and the fixing plate 10 is connected to the machine base 1.

The working principle of the invention is as follows: when a certain batch of cardboard of increasing thickness enters between the slitting roller 2 and the guide roller 3 at the infeed opening, the cardboard gives an upward force to the guide roller 3, so that the guide roller 3 is lifted upwards, the floating plate 9 has a tendency to float upwards because the guide roller 3 is rotatably connected to the floating plate 9 and the floating plate 9 can slide upwards and downwards, the eccentric 11 is located in the adjustment window 90 of the floating plate 9, so that the floating plate 9 gives an upward force to the eccentric 11, because the rotation point of the eccentric 11 is eccentric and the lower side of the adjustment window 90 of the floating plate 9 acts on the lower end point of the eccentric 11, so that the force acting on the eccentric 11 below the adjustment window 90 in the vertical direction is not in a vertical line with the vertical direction of the point of the eccentric 11, and in addition the connecting rod 12 carrying the eccentric 11 can only rotate, therefore, under the upward acting force of the floating plate 9, the eccentric wheel 11 rotates (a proper space is reserved between the left side surface and the right side surface of the adjusting window 90 to enable the eccentric wheel 11 to rotate), specifically, the long-distance end of the eccentric wheel 11 rotates upwards, and the short-distance end of the eccentric wheel 11 rotates downwards, so that the floating plate 9 and the guide roller 3 can float together (as shown in the floating amount h in fig. 4); when the thickness of the paperboard is restored to the original thickness, under the action of gravity, the eccentric wheel 11 rotates back 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 and the guide roller 3 can move downwards together. 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 move up and down completely and synchronously, the guide rollers 3 arranged on the two floating plates 9 can also move up and down in an absolutely horizontal posture, and all paper pressing wheels arranged on the guide rollers 3 can be pressed on the paper board with the same pressure, thereby ensuring that the paper board cannot deviate in the conveying process.

As described above, the floating plate 9 can be moved up and down by the guide rail, the guide rod or the guide groove, and preferably, the floating plate 9 is slidably disposed in the sliding groove of the fixed plate 10, and the floating plate 9 is moved up and down in the sliding groove of the fixed plate 10, which is relatively simple in structure and lower in manufacturing cost. As described above, the connecting rod 12 is rotatably installed on the fixing plate 10, and the fixing plate 10 is connected to the housing 1, which makes full use of the fixing plate 10, and has better integrity, thus having more reasonable structure and lower manufacturing cost.

In order to limit the floating plate 9 from floating only within a certain range, the difference between the distance from the left side surface to the right side surface of the adjustment window 90 of the floating plate 9 and the outer diameter of the eccentric 11 is equal to the eccentric amount of the eccentric 11. The maximum floating distance of the floating plate 9 is thus the same as the eccentricity of the eccentric 11.

As shown in fig. 5, the eccentric wheel 11 may be a general eccentric wheel or an eccentric bearing, and preferably, the eccentric wheel 11 of the present invention is composed of an eccentric inner wheel 110 (general eccentric wheel) and a supporting bearing 111 (general bearing), the supporting bearing 111 is fitted over the eccentric inner wheel 110, and the eccentric inner wheel 110 is connected to the connecting rod 12. Because this kind of structure passes through support bearing 111 and the contact of floating plate 9, support bearing 111 can rotate, therefore both frictional force are littleer, and the wearing and tearing are also littleer, are difficult to appear the precision problem.

As described in the background art, a fixed shaft sleeve (or a paper pressing wheel) is fixedly installed on the guide roller 3 of the feeding hole, and a proper distance is kept between the fixed shaft sleeve and the slitting roller 2, so that the paper board enters the feeding hole under the pressure of the fixed shaft sleeve. However, after a long time of use and observation, it was found that there is a problem that is easily overlooked: because the fixed shaft sleeve is fixedly arranged on the guide roller (the angular velocity of the fixed shaft sleeve is the same with that of the guide roller), and the diameter of the fixed shaft sleeve is larger than that of the guide roller, the surface linear velocity of the fixed shaft sleeve is larger than that of the guide roller, and the linear velocity of the paper pressing belt and that of the slitting roller are the same with that of the guide roller, so that a speed difference exists between the conveying speed of the fixed shaft sleeve above the paper board and that of the slitting roller below the paper board, and as the paper board gradually enters from the feed inlet, the speed difference can enable the paper board to have friction among the slitting roller, the fixed shaft sleeve and the paper pressing belt, and the friction can enable the paper board to deviate, and the accuracy of paper board slitting is.

Therefore, the paper pressing bearing 4 is sleeved on the guide roller 3 at the feed inlet or the paper pressing roller is movably sleeved on the guide roller. It should be noted here that, the platen bearing 4 may be directly installed on the guide roller 3, or a shaft sleeve may be installed on the guide roller 3 first, and then the platen bearing 4 is installed on the shaft sleeve; the platen roller (a common roller) can be mounted on the guide roller 3 through a bearing and can be directly sleeved on the guide roller 3 as long as the platen roller can rotate. Of course, the paper pressing bearing 4 is adopted, the structure is simpler, the cost is lower, and the effect is better because the friction force is small.

Through the cover have the pressure paper bearing 4 or movable sleeve have the pressure paper gyro wheel on guide roll 3, let the pressure paper bearing 4 or the pressure paper gyro wheel of rotation press the cardboard, and follow the cardboard and rotate, only let the pressure paper belt 5 and cut roller 2 and give the cardboard conveying power from this, and the pressure paper bearing 4 or the pressure paper gyro wheel of rotation is only pressing the cardboard, and can not give the cardboard conveying power, just so can guarantee that the cardboard can not take place the skew in data send process, thereby guarantee to cut the precision.

As shown in fig. 2, the paperboard slitting device further comprises a slitting knife 6, the slitting knife 6 is mounted at the rear side of the slitting roller 2, as shown in fig. 3, a soft contact layer 20 is pasted on 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.

The during operation, the cardboard gets into from the feed inlet between paper pressing belt 5 and the roller of cutting 2, cuts roller 2 and rotates, and the cardboard just is pressed from both sides paper pressing belt 5 and is cut and remove along the cambered surface of cutting roller 2 between the roller 2, owing to paste soft contact layer 20 (the cardboard is located soft contact layer 20's top) on the roll surface of cutting roller 2, this soft contact layer 20 with install the branch cutter 6 contact of cutting roller 2 rear side, divide the knife tip of cutter 6 just to cut the cardboard like this. Through the structure, the paper board is cut, and the cut surface of the paper board is smoother and more attractive.

The flexible contact layer 20 may be an adhesive tape, a rubber layer, a cotton layer, or the like, and may be a flexible material that can lift up the cardboard and allow the cutting edge of the cutting blade 6 to penetrate the cardboard.

As described above, the flexible contact layer 20 may be an adhesive tape, so as to facilitate the application of the adhesive tape and to apply the adhesive tape more smoothly, as shown in fig. 2, the base 1 of the present invention is provided with the guide rod 8 parallel to the axis of the slitting roller 2, the guide rod 8 is slidably sleeved with the adhesive tape roll holder 80, and the adhesive tape roll holder 80 is rotatably provided with the adhesive tape roll 81. When the adhesive tape needs to be pasted, one end of the adhesive tape on the adhesive tape roll 81 is pulled out and pasted on the slitting roller 2, then the slitting roller 2 rotates, the adhesive tape is automatically pulled out and pasted on the slitting roller 2, and after one or more circles of adhesive tape are pasted, the adhesive tape is manually cut off. With this configuration, the adhesive tape can be more smoothly and smoothly attached to the slitting roll 2.

Finally, it is worth mentioning that a fulcrum 7 is provided at the front side of the guide roll 3 at the feed port, and as shown in fig. 6, a damping wheel 70 is provided on the fulcrum 7. The paper feeding mechanism pushes the paper board to enter the paper board cutting device through the pushing block, and due to the fact that the damping wheel 70 exists, the damping wheel 70 can provide a reverse acting force for the paper board, the reverse acting force can drive the paper board to move towards the direction of the pushing block, so that the edge of the paper board and the pushing face of the pushing block are always kept on the same face, 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. Device is cut to cardboard, including frame (1), cut roller (2) and press paper belt (5), press paper belt (5) around on guide roll (3) to be used in and cut roller (2) branch, press paper belt (5) and divide and cut and have feed inlet and discharge gate, its characterized in that between roller (2): the guide roll (3) both ends that are located feed inlet department all can rotate and install on floating plate (9), floating plate (9) can slide from top to bottom and set up, floating plate (9) have adjusting window (90), be equipped with eccentric wheel (11) in adjusting window (90), the top surface of adjusting window (90) is tangent with the upper end point of eccentric wheel (11), the lower extreme point of adjusting window (90) is tangent with eccentric wheel (11), the distance between the left surface of adjusting window (90) to the right surface is greater than the external diameter of eccentric wheel (11), controls two eccentric wheel (11) symmetries and sets up and connect on connecting rod (12), connecting rod (12) rotatable installation is on fixed plate (10), fixed plate (10) are connected on frame (1).

2. A board slitting device according to claim 1, characterized in that: the floating plate (9) can be arranged on the fixed plate (10) in a vertically sliding mode.

3. A board slitting device according to claim 1, characterized in that: the difference between the distance between the left surface and the right surface of the adjusting window (90) and the outer diameter of the eccentric wheel (11) is equal to the eccentricity of the eccentric wheel (11).

4. A board slitting device according to claim 1, characterized in that: 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. A board slitting device according to claim 1, characterized in that: the guide roller (3) at the feed inlet is sleeved with a paper pressing bearing (4) or is movably sleeved with a paper pressing roller.

6. A board slitting device according to claim 1, characterized in that: the cutting device is characterized by comprising a cutting knife (6), wherein the cutting knife (6) is arranged on the rear side of a cutting roller (2), a soft contact layer (20) is pasted 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. A board slitting device according to claim 6, characterized in that: the soft contact layer (20) is an adhesive tape.

8. A board slitting device according to claim 6, characterized in that: the machine base (1) is provided with a guide rod (8) parallel to the axis of the slitting roller (2), the guide rod (8) is sleeved with an adhesive tape roll seat (80) in a sliding manner, and an adhesive tape roll (81) is rotatably arranged on the adhesive tape roll seat (80).

9. A board slitting device according to claim 1, characterized in that: a support shaft (7) is arranged on the front side of the guide roller (3) at the feed inlet, and a damping wheel (70) is arranged on the support shaft (7).