Double bidirectional paper bender structure of roll paper machine

Abstract

The utility model discloses a double bidirectional paper bender structure of a roll paper machine, which comprises a double paper bending device which is arranged at the unwinding rear end of the roll paper machine and is positioned at the paper feeding front end of a flat sheet machine, the double paper bending device comprises a supporting wall plate fixedly installed on a wall body, a paper bending roller moving power lead screw machine installed on the supporting wall plate, a lead screw installed at the power output end of the top of the paper bending roller moving power lead screw machine, and a paper bending roller moving plate fixedly installed with the lead screw. The paper bending roller set is installed on the paper bending roller moving plate and can move up and down along with the paper bending roller moving plate, and the upper paper guide roller set and the lower paper guide roller set are fixedly installed on the supporting wall body and arranged up and down. The double bidirectional paper bender structure has forward and reverse functions, and when bent paper is leveled, the machine does not need to be shut down to carry out reverse paper loading or paper penetrating again, so that the labor intensity of an operator can be reduced, and meanwhile, the rejection rate after printing can be reduced by 0.3% after leveled paper is printed.

Description

Technical Field

[0001] The utility model relates to the technical field of paper bending device equipment, in particular to a double bidirectional paper bending device structure of a roll paper machine. Background Art

[0002] At present, in the process of making takeaway paper bags, a roll paper machine is needed to unwind the paper tape. The paper tape wound on the roll paper machine is in a curved state during winding, so a paper bending device is needed to bend and flatten the curved paper bag during unwinding. The unrolled paper tape is bent, and generally there are two states: the paper surface of the paper tape is arched upward or the back of the paper tape is tilted downward (i.e., the paper surface is concave). However, traditional paper bending device products can only bend and flatten the paper tape in one direction. When a paper bending device is set in one direction, the flattening effect of the paper tape is not good, and the ideal flattening effect cannot be achieved; when the problem of flattening the paper tape needs to be solved comprehensively, the traditional process is to use a one-way paper bending device combined with a method of stopping the machine to reversely load the paper roll or re-threading the paper, which will increase the process of stopping the machine to reversely load the paper and the problems of low production efficiency, high cost, and high labor intensity of workers caused by the shutdown.

[0003] In the existing patent literature, the "Bidirectional reverse-curved paper flattening structure" with Chinese patent number 202122764957.1 can achieve the flattening effect of the paper surface and the back side of the paper tape, and has a bidirectional flattening effect; however, this structure of the flattening structure has many problems in use and effect, as follows: (1) The patented technical solution uses an upper flattening block 11 at the upper end of the flattening component 1 and a lower flattening shaft 12 at the lower end for flattening, and the middle part of the upper flattening block 11 protrudes against the back side of the paper (that is, the cross-section of the upper flattening block 11 is triangular, and the top part supports the back side of the paper); in this way, the paper tape will produce a large deformation and excessive flattening pulling force when flattened along this triangular protrusion, which will easily cause the paper tape to burst due to deep pulling of the paper surface or excessive deformation of the paper surface, resulting in a high scrap rate when the paper tape is flattened. (2) When the paper surface and the back surface of the paper tape are flattened separately, they are flattened by their respective upper flattening blocks 11 or lower flattening shafts 12, and only a single component (upper flattening block 11 or lower flattening shaft 12) is used for flattening and pressing in a single direction during flattening, that is, only one side of the paper tape can be flattened and pressed, and it is impossible to doubly press and flatten both sides of the paper tape at one time during the flattening process; such a flattening method cannot achieve the effect of flattening paper with high paper strength, and there is still the problem of unsatisfactory flattening effect during the flattening process of curved paper. (3) The upper flattening block 11 (see the description in paragraph 0037 of the specification), the adjustment component 3 (see the description in paragraph 0040 of the specification), etc. of the patent solution are all composed of multiple components, which will make the overall structure complicated and occupy space volume, which is not conducive to the simplification of the overall structure and the simplicity of the structural space.

[0004] Therefore, there are still many problems with the paper bending device structure of the traditional technology, which need further improvement or modification. Summary of the invention

[0005] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a double bidirectional paper bending device structure of a roll paper machine. The double bidirectional paper bending device structure of the roll paper machine forms a paper bending and flattening effect on the paper belt by setting two sets of upper and lower paper guide roller groups and lower paper guide roller groups and corresponding paper guide rollers, so as to achieve a double paper surface pressing effect of pressing both the paper surface and the back side of the paper belt, and at the same time, the paper bending and flattening of the bidirectional pressing is achieved through the pressing of the upper paper guide roller group and the lower paper guide roller group, so as to achieve the purpose of bidirectional flattening; because it has the forward and reverse functions, in normal production, there is no need to stop the machine for reverse loading or re-threading of paper in response to the situation that the paper on the outer circle of the paper roll is bent downward and the paper on the inner circle is warped, which reduces the labor intensity of the operator and can 100% solve the problem of bending and flattening of paper output from the ordinary white cardboard core, and the waste rate after printing can be reduced by 0.3% after the flattened paper is printed; and the overall structure is simple and easy to operate.

[0006] The utility model solves the technical problem by adopting a technical solution: a double bidirectional paper bending device structure of a roll paper machine, comprising a double paper bending device installed at the unwinding rear end of the roll paper machine and located at the front end of the flat sheet feeding machine.

[0007] The double paper bending device includes a supporting wall panel fixedly mounted on the wall, a paper bending roller moving power screw machine mounted on the supporting wall panel, a screw mounted on the power output end at the top of the paper bending roller moving power screw machine, a paper bending roller moving plate fixedly mounted with the screw, a paper bending roller group mounted on the paper bending roller moving plate and capable of rising and falling with the paper bending roller moving plate, and an upper paper guide roller group and a lower paper guide roller group fixedly mounted on the supporting wall and arranged in an upper and lower direction.

[0008] The upper paper guide roller group and the lower paper guide roller group each include at least two paper guide rollers, and a passive paper pressing roller located between adjacent paper guide rollers for passively pressing paper.

[0009] The paper bending roller group comprises an upper paper bending roller located just above the passive paper pressing roller of the upper paper guide roller group and a lower paper bending roller located just below the passive paper pressing roller of the lower paper guide roller group.

[0010] Furthermore, the bending paper roller moving plate is U-shaped with a square groove in the middle, the top of the screw is fixedly installed with the bending paper roller moving plate through a screw fixing seat, and a screw sleeve is fixedly installed inside the bending paper roller moving plate and is slidably fitted with the screw.

[0011] Furthermore, the bending paper roller movable plate is a hollow structure, a slide groove channel is provided in the hollow structure, the passive paper pressing roller is located in the slide groove channel, the upper bending paper roller and the lower bending paper roller are respectively fixed at the upper end and the lower end of the slide groove channel, and the bottom of the upper bending paper roller and the top of the lower bending paper roller both protrude from the slide groove channel.

[0012] Furthermore, the left and right side surfaces of the curved paper roller moving plate and the two side surfaces of the square groove are provided with openings communicating with the slide channel.

[0013] Furthermore, the upper paper guide roller group and the lower paper guide roller group are both provided with three paper guide rollers, wherein two paper guide rollers are respectively located on both sides of the curved paper roller moving plate, and one paper guide roller is located in the square groove.

[0014] Furthermore, the paper bending roller moving power screw machine is fixedly installed on the supporting wall plate through a screw machine mounting base.

[0015] To sum up, the double bidirectional paper bending device structure of the roll paper machine of the utility model forms a paper bending and flattening effect on the paper tape by setting two sets of upper and lower paper guide roller groups and lower paper guide roller groups and corresponding paper guide rollers, thereby achieving a double paper surface pressing effect of pressing both the paper surface and the back side of the paper tape, and at the same time, the bending and flattening of the paper by bidirectional pressing is realized through the pressing of the upper paper guide roller group and the lower paper guide roller group, thereby achieving the purpose of bidirectional flattening; because it has the forward and reverse functions, during normal production, there is no need to stop the machine for reverse loading or re-threading of paper in response to the situation that the paper on the outer circle of the paper roll is bent downward and the paper on the inner circle is warped, which reduces the labor intensity of the operator and can 100% solve the problem of bending and flattening of paper output from ordinary white cardboard cores. After printing on the flattened paper, the scrap rate after printing can be reduced by 0.3%; and the overall structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a double bidirectional paper bending device structure of a roll paper machine according to Embodiment 1 of the present utility model;

[0017] Figure 2 This is a schematic structural diagram of a double bidirectional paper bending device structure of a paper roll machine in Embodiment 1 of the utility model when it is pressed down;

[0018] Figure 3 This is a schematic structural diagram of a double bidirectional paper bending device structure of a roll paper machine in Example 1 of the utility model when it is pressed upward;

[0019] The markings in the attached drawings are as follows: 1. Double paper bending device; 2. Support wall panel; 3. Power screw machine for moving paper bending roller; 4. Screw; 5. Moving plate for paper bending roller; 6. Paper bending roller group; 7. Upper paper guide roller group; 8. Lower paper guide roller group; 9. Paper guide roller; 10. Passive paper pressing roller; 11. Upper paper bending roller; 12. Lower paper bending roller; 13. Square groove; 14. Screw fixing seat; 15. Screw sleeve; 16. Slide channel; 17. Opening; 18. Screw machine mounting base. DETAILED DESCRIPTION

[0020] Example 1

[0021] The double bidirectional paper bending device structure of a roll paper machine described in this embodiment 1 is as follows: Figure 1 As shown, it includes a double paper bending device 1 installed at the unwinding rear end of the roll paper machine and located at the front end of the flat sheet machine. The double paper bending device is installed between the front end of the flat sheet machine and the unwinding rear end of the roll paper machine, and can achieve the effect of double pressing and flattening the front and back sides of the unrolled paper bag and bidirectional pressing and flattening, and the bending and flattening effect is good.

[0022] In the present embodiment 1, the double paper bending device comprises a supporting wall panel 2 fixedly mounted on the wall, a power screw machine 3 for moving the paper bending roller mounted on the supporting wall panel, a screw 4 mounted on the power output end at the top of the power screw machine for moving the paper bending roller, a paper bending roller moving plate 5 fixedly mounted with the screw, a paper bending roller group 6 mounted on the paper bending roller moving plate and capable of following the paper bending roller moving plate to rise and fall, and an upper paper guide roller group 7 and a lower paper guide roller group 8 fixedly mounted on the supporting wall and arranged in an upper and lower position. The supporting wall panel is fixed and immovable, and is a fixed bracket structure, used for the installation and support of the entire double paper bending device. The power screw machine for moving the paper bending roller outputs power to the screw to realize up and down movement to drive the paper bending roller moving plate and the paper bending roller group to rise and fall. The upper paper guide roller group and the lower paper guide roller group are both fixedly mounted on the supporting wall and cannot be moved up and down.

[0023] In this embodiment 1, the upper paper guide roller group and the lower paper guide roller group each include at least two paper guide rollers 9, and a passive paper pressing roller 10 located between adjacent paper guide rollers for passive paper pressing. Each paper guide roller of each paper guide roller group is arranged horizontally in a straight line, and each passive paper pressing roller group is located between two adjacent paper guide rollers, and the height of the passive paper pressing roller is higher than that of the paper guide roller; both the paper guide roller and the passive paper pressing roller guide the paper tape after unwinding.

[0024] In the present embodiment 1, the paper bending roller group includes an upper paper bending roller 11 located just above the passive paper pressing roller of the upper paper guide roller group and a lower paper bending roller 12 located just below the passive paper pressing roller of the lower paper guide roller group. A corresponding upper paper bending roller or lower paper bending roller is arranged just above or just below each passive paper pressing roller, so that when the upper paper bending roller is pressed down or the lower paper bending roller is pressed up, the double-sided effect of the paper belt formed by the corresponding passive paper pressing roller can be achieved, so that both the paper surface and the back surface of the paper belt are pressed and flattened, so that the double-sided pressing of the paper bag and the effect of bidirectional bending and flattening can be achieved, and a very good flattening effect can be achieved through the double bending and flattening of the paper belt in forward and reverse motions.

[0025] The operation process of the double paper bending device is as follows: the paper strip unrolled from the roll paper machine is first pressed down by the upper paper bending roller and the corresponding passive paper pressing roller to form a pressed paper strip, so as to achieve the first double-sided pressing and flattening. Figure 1 As shown; and then the lower curved paper roller is raised to press upward with the corresponding passive paper pressing roller to form a second pressing paper belt, so as to achieve the effect of double pressing and double-sided flattening of the paper belt, as shown Figure 2 As shown. In particular, when the paper surface of the paper tape is arched upward (i.e. the outer circle of paper is bent downward), the upper bending paper roller presses downward and the corresponding passive paper pressing roller presses the paper tape to form a very good flattening effect; and when the back of the paper tape is tilted downward (i.e. the inner circle of paper is tilted), the lower bending paper roller presses upward and the corresponding passive paper pressing roller presses the paper tape to form a very good flattening effect. This double bidirectional paper bending device structure can achieve the effect of flattening the paper surface with a relatively small degree of pressing, which can completely eliminate the bursting that may be caused by deep pressing of the paper surface; and because it has forward and reverse functions, during normal production, there is no need to stop the machine for reverse loading or re-threading of paper, and the structure is also very simple.

[0026] In the present embodiment 1, the bending paper roller moving plate is in a U shape with a square groove 13 in the middle, the top of the lead screw is fixedly installed with the bending paper roller moving plate through the lead screw fixing seat 14, and the bending paper roller moving plate is fixedly installed with a lead screw sleeve 15 which is fitted with the lead screw and is slidably fitted with the lead screw. The lead screw fixing seat can realize the connection, installation and fixing of the lead screw and the bending paper roller moving plate and drive the bending paper roller moving plate to rise and fall synchronously, and the lead screw sleeve plays the role of positioning the lead screw when it rises and falls and improving the stability.

[0027] In the present embodiment 1, the paper bending roller moving plate is a hollow structure, a chute channel 16 is provided in the hollow structure, the passive paper pressing roller is located in the chute channel, the upper paper bending roller and the lower paper bending roller are respectively fixed at the upper end and the lower end of the chute channel, and the bottom of the upper paper bending roller and the top of the lower paper bending roller are both protruding in the chute channel. The setting of the chute channel can ensure that the paper bending roller moving plate will not collide with the passive paper pressing roller.

[0028] In this embodiment 1, the left and right sides of the curved paper roller moving plate and the two sides of the square groove are provided with openings 17 to communicate with the chute channel. The openings are used to allow the paper tape to pass through the curved paper roller moving plate and out when unwinding, so as to achieve the purpose of unobstructed unwinding of the paper tape.

[0029] In this embodiment 1, the upper paper guide roller group and the lower paper guide roller group are both provided with three paper guide rollers, two of which are respectively located on both sides of the curved paper roller moving plate, and one paper guide roller is located in the square groove.

[0030] In this embodiment 1, the paper bending roller moving power screw machine is fixedly installed on the supporting wall panel through the screw machine mounting base 18.

[0031] In the present embodiment 1, the double bidirectional paper bending device structure of the roll paper machine forms a paper bending and flattening effect on the paper tape by setting two sets of upper and lower paper guide roller groups and lower paper guide roller groups and corresponding paper guide rollers, so as to achieve a double paper surface pressing effect of pressing both the paper surface and the back side of the paper tape, and at the same time, the bending and flattening of the paper by bidirectional pressing is realized through the pressing of the upper paper guide roller group and the lower paper guide roller group, so as to achieve the purpose of bidirectional flattening; because it has the forward and reverse functions, in normal production, there is no need to stop the machine for reverse loading or re-threading of paper in case that the paper on the outer circle of the paper roll is bent downward and the paper on the inner circle is warped, which reduces the labor intensity of the operator and can 100% solve the problem of bending and flattening of paper output from ordinary white cardboard cores. After printing, the flattened paper can reduce the scrap rate by 0.3% after printing; and the overall structure is simple and easy to operate.

[0032] The above is only a preferred embodiment of the utility model, and does not limit the structure of the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. A double bidirectional paper bending device structure for a web-tissue machine, characterized in that: The invention comprises a double paper bending device (1) installed at the unwinding rear end of a paper roll machine and located at the paper feeding front end of a flat sheet machine; the double paper bending device comprises a supporting wall panel (2) fixedly installed on a wall, a power screw machine (3) for moving a paper bending roller installed on the supporting wall panel, a screw (4) installed on the power output end of the top of the power screw machine for moving a paper bending roller, a paper bending roller moving plate (5) fixedly installed with the screw, a paper bending roller group (6) installed on the paper bending roller moving plate and capable of following the upward and downward movement of the paper bending roller moving plate, an upper paper guide roller group (7) and a lower paper guide roller group (8) fixedly installed on the supporting wall and arranged in an upper and lower position; The upper paper guide roller group and the lower paper guide roller group each include at least two paper guide rollers (9), and a passive paper pressing roller (10) located between adjacent paper guide rollers for passively pressing paper; The paper bending roller group comprises an upper paper bending roller (11) located just above the passive paper pressing roller of the upper paper guide roller group and a lower paper bending roller (12) located just below the passive paper pressing roller of the lower paper guide roller group.

2. A double bidirectional paper bending device structure for a roll paper machine according to claim 1, characterized in that: The bending paper roller moving plate is in the shape of a U with a square groove (13) in the middle. The top of the lead screw is fixedly installed with the bending paper roller moving plate through a lead screw fixing seat (14). A lead screw sleeve (15) is fixedly installed in the bending paper roller moving plate and is slidably fitted with the lead screw.

3. A double bidirectional paper bending device structure for a roll paper machine according to claim 2, characterized in that: The bending paper roller movable plate is a hollow structure, a slide groove channel (16) is arranged in the hollow structure, the passive paper pressing roller is located in the slide groove channel, the upper bending paper roller and the lower bending paper roller are respectively fixed at the upper end and the lower end of the slide groove channel, and the bottom of the upper bending paper roller and the top of the lower bending paper roller both protrude from the slide groove channel.

4. A double bidirectional paper bending device structure for a roll paper machine according to claim 3, characterized in that: The left and right side surfaces of the curved paper roller moving plate and the two side surfaces of the square groove are both provided with openings (17) which are in communication with the slide channel.

5. The double bidirectional paper bending device structure of a roll paper machine according to claim 4, characterized in that: The upper paper guide roller group and the lower paper guide roller group are both provided with three paper guide rollers, wherein two paper guide rollers are respectively located on both sides of the curved paper roller moving plate, and one paper guide roller is located in the square groove.

6. A double bidirectional paper bending device structure for a roll paper machine according to claim 5, characterized in that: The paper bending roller moving power screw machine is fixedly mounted on the supporting wall plate via a screw machine mounting base (18).

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