Special low-speed paper machine pressing part paper guiding device for thick paperboard

Abstract

A low-speed paper machine pressing part paper guiding device special for thick paperboards relates to the technical field of paper guiding devices and comprises a supporting table, a paper guiding seat is slidably arranged on the supporting table through a pneumatic moving mechanism, a paper guiding conveyor and a paper breaking device are sequentially arranged on the paper guiding seat in the feeding direction of the thick paperboards, and an auxiliary paper guiding assembly is arranged above the paper guiding conveyor in a lifting mode. The paper cutter comprises a disc cutting blade which is rotationally arranged, the disc cutting blade is arranged in a sliding mode in the width direction of the thick paper board, and the disc cutting blade further vertically ascends and descends to avoid the thick paper board. The paper guiding device solves the problems that a paper guiding device in the prior art needs to be shut down during paper guiding, the utilization rate of a paper machine is not high, the gram weight of an existing thick paperboard is high, and the paper guiding success rate of independent negative pressure paper guiding equipment is low.

Description

Technical Field

[0001] The utility model relates to the technical field of paper guiding devices, in particular to a paper guiding device for the pressing part of a low-speed paper machine dedicated to thick cardboard. Background Art

[0002] Paper is generally an aqueous suspension of plant fibers after pulping treatment, which is combined in an interleaved manner and then dehydrated, compressed, and dried. Special paper has a higher grammage than ordinary daily-use paper and cultural paper. Thick cardboard belongs to a kind of special paper, and the grammage range of existing thick cardboard is 300-900 g / m 2 .

[0003] At present, the paper guiding methods for thick cardboard are mostly corded paper guiding and cordless paper guiding. The grammage range of existing thick cardboard is 300-900 g / m 2 , with a relatively high grammage. The thickness range is 0.31 mm - 0.95 mm, and the cardboard is relatively thick. When using a paper guiding rope to guide paper in the wet part of the paper machine, the thick cardboard has a high water content. After leaving the wire section, the water content of the cardboard is still about 75%. The paper guiding rope will break up the paper sheet, making it difficult to transfer the thick cardboard. It is very easy to have paper breakage or the situation that the thick cardboard cannot be smoothly introduced into the next process.

[0004] A patent with a publication number of CN204435109U is disclosed in the prior art. The solution includes a paper conveying mechanism, multiple paper guiding rollers, and a paper cutting mechanism through which paper passes in sequence. The paper conveying mechanism includes a conveying positioning adjustment support rod parallel to the paper output section and a conveying positioning adjustment swing wheel rotatably installed at the head of the conveying positioning adjustment support rod. The paper cutting mechanism includes a cutting positioning adjustment support rod initially parallel to the conveying positioning adjustment support rod and a cutting positioning adjustment swing wheel rotatably installed at the head of the cutting positioning adjustment support rod and used to control the swing angle of the tail of the support rod to cut the paper. This cordless paper guiding system for papermaking does not require a paper guiding rope and a rope wheel, and has high working efficiency.

[0005] The existing devices including the above patent gradually expose the deficiencies of the prior art during use, which are mainly manifested in the following aspects:

[0006] Currently, cordless paper guiding mostly adds a vacuum roll or a blowing device to the paper machine equipment, and the paper machine needs to stop during paper guiding, so the utilization rate of the paper machine is not high. Moreover, the highest grammage of existing thick cardboard can reach 900 g / m 2 , with a relatively high grammage. For a single negative pressure paper guiding device, the paper guiding success rate is relatively low.

[0007] In summary, it is obvious that the prior art has inconveniences and defects in actual use, so it is necessary to make improvements. Summary of the Utility Model

[0008] Aiming at the defects in the prior art, the utility model is used to solve the problems of the paper guiding device in the traditional technology, which requires the paper machine to stop during paper guiding, resulting in low utilization rate of the paper machine. Moreover, the basis weight of the existing thick cardboard is relatively high, and for a single negative pressure paper guiding device, the success rate of paper guiding is relatively low.

[0009] To achieve the above object, the utility model provides the following technical solutions:

[0010] A paper guiding device for the press section of a low-speed paper machine dedicated to thick cardboard, comprising a support table. The support table is slidably provided with a paper guiding seat through a pneumatic moving mechanism. Along the feeding direction of the thick cardboard, a paper guiding conveyor and a paper cutter are sequentially arranged on the paper guiding seat. An auxiliary paper guiding assembly is lifted above the paper guiding conveyor. The paper cutter includes a disk cutting blade rotatably arranged. The disk cutting blade is slidably arranged along the width direction of the thick cardboard, and the disk cutting blade also moves vertically up and down to avoid the thick cardboard.

[0011] As an optimized scheme, the paper guiding conveyor includes a paper guiding cavity shell. The paper guiding cavity shell is provided with a negative pressure inner cavity. A plurality of adsorption holes are arranged side by side along the width direction of the thick cardboard at the upper end of the paper guiding cavity shell. The adsorption holes are communicated with the negative pressure inner cavity.

[0012] As an optimized scheme, the auxiliary paper guiding assembly includes a pressing plate that moves vertically up and down. The pressing plate is located above the paper guiding cavity shell.

[0013] As an optimized scheme, a bracket is fixedly connected to the paper guiding seat. The top of the bracket is vertically fixedly connected with a top cylinder. The telescopic end of the top cylinder is fixedly connected with the upper surface of the pressing plate through a buffer member.

[0014] As an optimized scheme, the buffer member includes a vertical cylinder fixedly connected to the upper end of the pressing plate. A vertical column is slidably arranged in the vertical cylinder. The upper end of the vertical column is fixedly connected with the telescopic end of the top cylinder. A resisting ring is fixedly connected to the side wall of the vertical column near the upper end. A compression spring is sleeved on the vertical column. The two ends of the compression spring respectively abut against the resisting ring and the upper end of the vertical cylinder.

[0015] As an optimized scheme, a rectangular sliding hole is vertically opened on the vertical cylinder. A sliding block that is constrained in the rectangular sliding hole is fixedly connected to the side wall of the vertical column.

[0016] As an optimized scheme, arc-shaped guide plates are respectively arranged on the opposite side walls of the pressing plate.

[0017] As an optimized scheme, guide rollers are respectively rotatably arranged on the opposite side walls of the paper guiding cavity shell. The upper surface of the guide rollers is higher than the upper surface of the paper guiding cavity shell.

[0018] As an optimized solution, a negative pressure connection cylinder communicating with the negative pressure inner cavity is fixedly connected to the end wall of the paper guiding cavity housing.

[0019] As an optimized solution, two slide rails are fixedly connected in parallel on the upper surface of the support platform, and slide seats matching the sliders are fixedly connected in parallel on the lower surface of the paper guiding seat.

[0020] As an optimized solution, a bottom cylinder is horizontally fixedly connected to the support platform, and a driving plate fixedly connected to the telescopic end of the bottom cylinder is fixedly connected to the side wall of the paper guiding seat.

[0021] As an optimized solution, a lead screw is horizontally rotatably arranged on the end wall of the paper guiding seat, a driving seat is threadedly connected to the lead screw, a side cylinder is vertically fixedly connected to the driving seat, a driving motor is fixedly connected to the telescopic end of the side cylinder, and the disc cutting blade is fixedly connected to the output shaft of the driving motor.

[0022] As an optimized solution, seat bodies are fixedly connected in parallel on the end wall of the paper guiding seat, both ends of the lead screw are rotatably installed on the two seat bodies correspondingly, and a driving machine for driving the lead screw to rotate is fixedly connected to one of the seat bodies.

[0023] As an optimized solution, a support frame is fixedly connected to the lower end of the support platform.

[0024] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0025] By respectively arranging guide rollers on both side walls of the paper guiding cavity housing and the guide wheels being higher than the paper guiding cavity housing, the thick cardboard can be supported under normal production conditions to prevent it from frictionally contacting the paper guiding cavity housing. When it is necessary to cut and guide the thick cardboard, the top cylinder drives the pressing plate to move downward, pressing the thick cardboard onto the upper surface of the paper guiding cavity housing. The adsorption holes of the paper guiding cavity housing adsorb and fix the thick cardboard under the action of negative pressure, realizing the adsorption and fixation of the thick cardboard by using the pressing plate to assist the paper guiding cavity housing, and improving the adsorption stability.

[0026] At the same time, the side cylinder drives the driving motor to rise, and the driving motor drives the disc cutting blade to slide along the width direction of the thick cardboard to cut the thick cardboard. After cutting, the bottom cylinder drives the paper guiding seat to feed forward, realizing the paper guiding and feeding of the thick cardboard. The bottom cylinder can drive the paper guiding seat to quickly feed forward to make up for the length of the thick cardboard sagging during the cutting process, and can realize non-stop operation, improving the efficiency. Description of the Drawings

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0028] Figure 1 It is a schematic structural diagram of the present invention.

[0029] In the figure: 1 - support table, 2 - paper guiding seat, 3 - support frame, 4 - bottom cylinder, 5 - top cylinder; 6 - side cylinder; 7 - slide rail; 8 - slide block; 9 - paper guiding cavity shell, 10 - negative pressure inner cavity, 11 - adsorption hole, 12 - guide roller, 13 - pressing plate, 14 - arc-shaped guide plate, 15 - bracket, 16 - vertical cylinder, 17 - vertical column, 18 - lead screw, 19 - driving seat, 20 - disc cutting blade, 21 - driving motor, 22 - driving plate. Specific Embodiments

[0030] The following will describe in detail the embodiments of the technical solutions of the present invention in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0031] As Figure 1 shown, a paper guiding device for the pressing section of a low-speed paper machine dedicated to cardboard includes a support table 1. The support table 1 is slidably provided with a paper guiding seat 2 through a pneumatic moving mechanism. A paper guiding conveyor and a paper cutting device are sequentially arranged on the paper guiding seat 2 along the feeding direction of the cardboard. An auxiliary paper guiding assembly is lifted above the paper guiding conveyor. The paper cutting device includes a rotatably arranged disc cutting blade 20. The disc cutting blade 20 is slidably arranged along the width direction of the cardboard, and the disc cutting blade 20 also moves vertically up and down to avoid the cardboard.

[0032] The paper guiding conveyor includes a paper guiding cavity shell 9. The paper guiding cavity shell 9 is provided with a negative pressure inner cavity 10. A plurality of adsorption holes 11 are arranged in parallel along the width direction of the upper end of the paper guiding cavity shell 9. The adsorption holes 11 are communicated with the negative pressure inner cavity 10.

[0033] The auxiliary paper guiding assembly includes a vertically lifted pressing plate 13. The pressing plate 13 is located above the paper guiding cavity shell 9.

[0034] A bracket 15 is fixedly connected to the paper guiding seat 2. A top cylinder 5 is vertically and fixedly connected to the top of the bracket 15. The telescopic end of the top cylinder 5 is fixedly connected to the upper surface of the pressing plate 13 through a buffer member.

[0035] The buffer member includes a vertical cylinder 16 fixedly connected to the upper end of the pressing plate 13. A vertical column 17 is slidably arranged in the vertical cylinder 16. The upper end of the vertical column 17 is fixedly connected to the telescopic end of the top cylinder 5. A resisting ring is fixedly connected to the side wall of the vertical column 17 near the upper end. A compression spring is sleeved on the vertical column 17, and the two ends of the compression spring respectively abut against the resisting ring and the upper end of the vertical cylinder 16.

[0036] A rectangular sliding hole is vertically formed in the vertical cylinder 16, and a sliding block that is constrained in the rectangular sliding hole is fixedly connected to the side wall of the vertical column 17.

[0037] Arc-shaped guide plates 14 are respectively arranged on the opposite side walls of the pressing plate 13.

[0038] Guide rollers 12 are respectively rotatably arranged on the opposite side walls of the paper guiding cavity housing 9, and the upper surface of the guide rollers 12 is higher than the upper surface of the paper guiding cavity housing 9.

[0039] A negative pressure connecting cylinder communicating with the negative pressure inner cavity 10 is fixedly connected to the end wall of the paper guiding cavity housing 9 to connect to a negative pressure source.

[0040] Two slide rails 7 are fixedly connected side by side on the upper surface of the support platform 1, and slide seats 8 that match the sliding blocks are fixedly connected side by side on the lower surface of the paper guiding seat 2.

[0041] A bottom cylinder 4 is horizontally fixedly connected to the support platform 1, and a driving plate 22 fixedly connected to the telescopic end of the bottom cylinder 4 is fixedly connected to the side wall of the paper guiding seat 2.

[0042] A lead screw 18 is horizontally rotatably arranged on the end wall of the paper guiding seat 2. A driving seat 19 is threadedly connected to the lead screw 18. A side cylinder 6 is vertically fixedly connected to the driving seat 19. The telescopic end of the side cylinder 6 is fixedly connected to a driving motor 21, and a disc cutting blade 20 is fixedly connected to the output shaft of the driving motor 21.

[0043] Seats are fixedly connected side by side on the end wall of the paper guiding seat 2, and the two ends of the lead screw 18 are rotatably installed on the two seats correspondingly. A driving machine for driving the lead screw 18 to rotate is fixedly connected to one of the seats.

[0044] A support frame 3 is fixedly connected to the lower end of the support platform 1.

[0045] The working principle of this device is as follows:

[0046] By respectively arranging the guide rollers 12 on the two side walls of the paper guiding cavity housing 9 and the guide wheels being higher than the paper guiding cavity housing 9, it is possible to support the cardboard under normal production conditions to prevent it from rubbing against the paper guiding cavity housing 9. When it is necessary to cut and guide the cardboard, the top cylinder 5 drives the pressing plate 13 to move downward, pressing the cardboard onto the upper surface of the paper guiding cavity housing 9. The adsorption holes 11 of the paper guiding cavity housing 9 adsorb and fix the cardboard under the action of negative pressure, realizing the use of the pressing plate 13 to assist the paper guiding cavity housing 9 in adsorbing and fixing the cardboard, and improving the stability of adsorption;

[0047] Meanwhile, the side cylinder 6 drives the driving motor 21 to rise, and the driving motor 21 drives the disc cutting blade 20 to slide along the width direction of the cardboard to cut the cardboard. After cutting, the bottom cylinder 4 drives the paper guiding seat 2 to feed forward, realizing the paper guiding and feeding of the cardboard with the cardboard. By using the bottom cylinder 4, the paper guiding seat 2 can be driven to feed forward quickly, making up for the length of the cardboard sagging during the cutting process, enabling non-stop operation and improving the efficiency.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A low-speed paper machine press section paper drawing device for cardboard, characterized in that: It includes a support table (1). A paper guiding seat (2) is slidably arranged on the support table (1) through a pneumatic moving mechanism. Along the feeding direction of the cardboard, a paper guiding conveyor and a paper cutting device are successively arranged on the paper guiding seat (2). An auxiliary paper guiding assembly is lifted above the paper guiding conveyor. The paper cutting device includes a rotating disc cutting blade (20). The disc cutting blade (20) is slidably arranged along the width direction of the cardboard, and the disc cutting blade (20) also moves vertically up and down to avoid the cardboard.

2. The paper guiding device for the press section of a low-speed paper machine dedicated to cardboard according to claim 1, characterized in that: The paper guiding conveyor includes a paper guiding cavity shell (9). The paper guiding cavity shell (9) is provided with a negative pressure inner cavity (10). A plurality of adsorption holes (11) are arranged side by side along the width direction of the cardboard at the upper end of the paper guiding cavity shell (9). The adsorption holes (11) are communicated with the negative pressure inner cavity (10).

3. The low-speed paper machine press section paper guiding device for special use with cardboard as claimed in claim 2, wherein: The auxiliary paper guiding assembly includes a pressing plate (13) that moves vertically up and down. The pressing plate (13) is located above the paper guiding cavity shell (9). A bracket (15) is fixedly connected to the paper guiding seat (2). A top cylinder (5) is vertically and fixedly connected to the top of the bracket (15). The telescopic end of the top cylinder (5) is fixedly connected to the upper surface of the pressing plate (13) through a buffer member.

4. The paper drawing device for the press section of a low-speed paper machine dedicated to cardboard according to claim 3, characterized in that: The buffer member includes a vertical cylinder (16) fixedly connected to the upper end of the pressing plate (13). A vertical column (17) is slidably arranged in the vertical cylinder (16). The upper end of the vertical column (17) is fixedly connected to the telescopic end of the top cylinder (5). A resisting ring is fixedly connected to the side wall of the vertical column (17) near the upper end. A compression spring is sleeved on the vertical column (17). The two ends of the compression spring respectively abut against the resisting ring and the upper end of the vertical cylinder (16). A rectangular sliding hole is vertically formed in the vertical cylinder (16). A sliding block that is constrained in the rectangular sliding hole is fixedly connected to the side wall of the vertical column (17).

5. The low-speed paper machine press section paper guiding device for special thick paperboard according to claim 4, characterized in that: Arc-shaped guide plates (14) are respectively arranged on the opposite side walls of the pressing plate (13).

6. The low-speed paper machine press section paper guiding device for special use of cardboard according to claim 5, characterized in that: Guide rollers (12) are respectively rotatably arranged on the opposite side walls of the paper guiding cavity shell (9). The upper surface of the guide rollers (12) is higher than the upper surface of the paper guiding cavity shell (9).

7. The paper drawing device for the press section of a low-speed paper machine dedicated to cardboard according to claim 6, characterized in that: A negative pressure connecting cylinder communicating with the negative pressure inner cavity (10) is fixedly connected to the end wall of the paper guiding cavity shell (9).

8. The paper drawing device for the press section of a low-speed paper machine dedicated to cardboard according to claim 7, characterized in that: Two slide rails (7) are fixedly connected side by side on the upper surface of the support table (1). Slide seats (8) that are matched with the sliding blocks are fixedly connected side by side on the lower surface of the paper guiding seat (2). A bottom cylinder (4) is horizontally fixedly connected to the support table (1). A driving plate (22) fixedly connected to the telescopic end of the bottom cylinder (4) is fixedly connected to the side wall of the paper guiding seat (2).

9. The low-speed paper machine press section paper guiding device for cardboard, as claimed in claim 8, wherein: A lead screw (18) is horizontally rotatably arranged on the end wall of the paper guiding seat (2). A driving seat (19) is threadedly connected to the lead screw (18). A side cylinder (6) is vertically fixedly connected to the driving seat (19). The telescopic end of the side cylinder (6) is fixedly connected to a driving motor (21). The disc cutting blade (20) is fixedly connected to the output shaft of the driving motor (21).

10. The low-speed paper machine press section paper guiding device for special use with cardboard, characterized in that: On the end wall of the draw-in seat (2), seats are fixedly connected in parallel. The two ends of the lead screw (18) are rotatably installed on the two seats correspondingly, and a driving machine for driving the lead screw (18) to rotate is fixedly connected to one of the seats.

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