Bottom knife roll structure

Abstract

The utility model relates to the technical field of paper processing, and provides a dead knife roll structure which comprises a dead knife roll, one side of the dead knife roll is fixedly connected with a flange plate, one side of the flange plate is provided with a first air exhaust plate, and the end face of one side of the flange plate is provided with a first vacuum channel and a second vacuum channel. The second air exhaust plate is used for being fixedly connected with the side face of the rack, the outer surface of the flange plate is sleeved with the second air exhaust plate, an opening is formed in the outer surface of the flange plate and communicates with the interiors of the second vacuum channels, and a second vacuum cavity communicating with the opening is formed in the inner surface of the second air exhaust plate; a second air pipe connector is arranged on the second air exhaust plate and communicates with the interior of the second vacuum cavity. According to the technical scheme, the adaptability of the dead knife roll is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bottom knife roll structure technical field, specifically, relate to a bottom knife roll structure. BACKGROUND

[0002] The existing cotton soft towel folding machine bottom knife roll 1 structure is mainly used for cutting paper sheet according to the set size, reference Figures 1-3 , usually including bottom knife roll 1, cutting knife 2 set up at the outer surface of bottom knife roll 1, flange plate 3 synchronous rotation with bottom knife roll 1, and first air extraction plate 4 fixedly connected with folding machine frame side. Flange plate 3 is set up at the side of bottom knife roll 1, and first air extraction plate 4 is set up at the side of flange plate 3.

[0003] In order to ensure the flatness of cutting paper sheet port and the continuous reliability of work, the outer surface of bottom knife roll 1 is provided with a plurality of first vacuum adsorption holes 101 for adsorbing paper sheet near the side of cutting knife 2, and the inside of bottom knife roll 1 is communicated with the first vacuum adsorption holes 101, forming first negative pressure cavity 102. At the same time, in order to ensure the stable conveying of paper sheet, the outer surface of bottom knife roll 1 is also provided with a plurality of second vacuum adsorption holes 103, and the inside of bottom knife roll 1 is communicated with the second vacuum adsorption holes 103, forming second negative pressure cavity 104. Flange plate 3 is provided with first vacuum channel 301 and second vacuum channel 302 communicated with first negative pressure cavity 102 and second negative pressure cavity 104 respectively.

[0004] The end face of first air extraction plate 4 near flange plate 3 is provided with first vacuum cavity 401 and second vacuum cavity 402 communicated with first vacuum channel 301 and second vacuum channel 302 respectively. The side of first air extraction plate 4 is provided with air pipe joint, and the air pipe joint is communicated with first vacuum cavity 401 and second vacuum cavity 402 and is connected with air extractor.

[0005] When second vacuum cavity 402, second vacuum channel 302 and second negative pressure cavity 104 on bottom knife roll 1 are communicated, the air extractor will extract the air in second negative pressure cavity 104, at this time, the second vacuum adsorption hole 103 generates negative pressure, and the paper sheet is firmly adsorbed on the outer surface of bottom knife roll 1 under the action of air pressure, so as to ensure the stable conveying of paper sheet.

[0006] When first negative pressure cavity 102, first vacuum channel 301 and first vacuum cavity 401 on bottom knife roll 1 are communicated, second negative pressure cavity 104, second vacuum channel 302 and second vacuum cavity 402 will be disconnected. The air extractor will extract the air in first negative pressure cavity 102, at this time, the first vacuum adsorption hole 101 generates negative pressure, and the paper sheet is firmly adsorbed on the side of bottom knife roll 1 near cutting knife 2 under the action of air pressure, so as to ensure the flatness of cutting paper sheet end face.

[0007] And the first vacuum cavity 401 and the second vacuum cavity 402 on the first air extraction plate 4 are arranged on the same end face, and the evacuation area of the first vacuum cavity 401 and the second vacuum cavity 402 cannot be increased due to the limited area of the end face. Different materials have different air permeability, and the required air release time is different, which makes it difficult for the bottom knife roller 1 to effectively adsorb paper sheets of different materials, thereby reducing the adaptability. Content of the utility model

[0008] The utility model provides a bottom knife roller structure, improves the adaptability of bottom knife roller.

[0009] The technical scheme of the utility model is as follows: a bottom knife roller structure, including bottom knife roller, the side fixed connection of bottom knife roller has flange plate, the side of flange plate is equipped with first air extraction plate, the side end face of flange plate is equipped with first vacuum passage and second vacuum passage, still include the second air extraction plate for with rack side fixed connection, and the second air extraction plate sleeve is equipped in the second air extraction plate of flange plate outer surface, the outer surface of flange plate is equipped with opening, and the opening is communicated with each second vacuum passage inside, the second air extraction plate inner surface is equipped with the second vacuum cavity that communicates with the opening, be equipped with second air pipe joint on the second air extraction plate, and second air pipe joint is communicated with second vacuum cavity inside.

[0010] Further, it further includes a fixing assembly for fixedly connecting the first air extraction plate with the side surface of the rack, the fixing assembly includes a plurality of connecting rods arranged on the side surface of the first air extraction plate and a fixing plate arranged on the side of the plurality of connecting rods away from the first air extraction plate, and the fixing plate is fixedly connected with the side surface of the rack through bolts.

[0011] Further, the left and right sides of the connecting rod are provided with threaded segments, and the rotation directions of the two threaded segments are opposite, and the first air extraction plate and the fixing plate are respectively screwed with the two threaded segments.

[0012] The working principle and beneficial effects of the utility model are as follows:

[0013] The utility model discloses a second air extraction plate is arranged, and the second vacuum cavity is arranged on the second air extraction plate, so that the air extraction area of the first vacuum cavity and the second vacuum cavity is no longer limited by the area of the end face, so that the staff can increase the area of the first vacuum cavity and the second vacuum cavity, and the adsorption capacity of the bottom knife roller is enhanced. This makes the bottom knife roller can effectively adsorb paper sheets of different materials, thereby expanding the use range and applicability of the bottom knife roller. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further explained in detail in connection with the drawings and specific embodiments.

[0015] Figure 1 It is the schematic diagram of prior art partial structure;

[0016] Figure 2 is a partial structure exploded schematic view of the prior art;

[0017] Figure 3 is a first air extraction plate structure schematic view of the prior art;

[0018] Figure 4 is a structure schematic view of the utility model;

[0019] Figure 5 is a partial structure exploded schematic view of the utility model Figure 1 ;

[0020] Figure 6 is a partial structure exploded schematic view of the utility model Figure 2 ;

[0021] Figure 7 is a first air extraction plate structure schematic view of the embodiment;

[0022] Figure 8 is a second air extraction plate structure schematic view of the embodiment;

[0023] Figure 9 is a structure schematic view of the second embodiment.

[0024] In the figure: 1, bottom knife roll; 101, first vacuum suction hole; 102, first negative pressure cavity; 103, second vacuum suction hole; 104, second negative pressure cavity; 2, cutting knife; 3, flange plate; 301, first vacuum channel; 302, second vacuum channel; 4, first air extraction plate; 401, first vacuum cavity; 402, second vacuum cavity; 403, first air pipe joint; 5, second air extraction plate; 501, second air pipe joint; 502, opening; 6, connecting rod; 601, fixed plate; 7, screw rod; 701, limiting rod; 702, rack; 703, support rod; 704, clamping column; 705, clamping groove; 706, limiting groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0026] Reference Figures 4-8The utility model provides a bottom knife roller structure, which comprises a bottom knife roller 1, the bottom knife roller 1 is rotatably connected with the frame of a folding machine, the outer surface of the bottom knife roller 1 is provided with a plurality of first vacuum suction holes 101 and second vacuum suction holes 103, the bottom knife roller 1 is internally provided with a first negative pressure cavity 102 and a second negative pressure cavity 104 which are communicated with the first vacuum suction holes 101 and the second vacuum suction holes 103 respectively, one side of the bottom knife roller 1 is fixedly connected with a flange plate 3, one side of the flange plate 3 is provided with a first air extraction plate 4, the first air extraction plate 4 is provided with a first air pipe joint 403, the flange plate 3 is provided with a first vacuum channel 301 and a second vacuum channel 302, one side end surface of the first air extraction plate 4 is provided with a first vacuum cavity 401 which is communicated with the first vacuum channel 301, and the first air pipe joint 403 is communicated with the inside of the first vacuum cavity 401.

[0027] The utility model also comprises a second air extraction plate 5 which is sleeved on the outer surface of the flange plate 3, the outer surface of the flange plate 3 is provided with an opening 502 which is communicated with the inside of each second vacuum channel 302, the inner surface of the second air extraction plate 5 is provided with a second vacuum cavity 402 which is communicated with the opening 502, the second air extraction plate 5 is provided with a second air pipe joint 501 which is communicated with the inside of the second vacuum cavity 402, and the second air extraction plate 5 is fixedly connected with the frame.

[0028] In use, the air extraction pipe of an air extractor is connected with the first air pipe joint 403 and the second air pipe joint 501 respectively, and the air extractor is started. Since the first air extraction plate 4 and the second air extraction plate 5 are fixed and do not rotate with the bottom knife roller 1, when the second negative pressure cavity 104, the second vacuum channel 302 and the second vacuum cavity 402 on the bottom knife roller 1 are communicated, the air extractor can extract the air in the second negative pressure cavity 104, and the second vacuum suction hole 103 can generate negative pressure, so that the paper sheet is adsorbed to the outer surface of the bottom knife roller 1 under the action of air pressure, thereby ensuring the stable transportation of the paper sheet.

[0029] When the first negative pressure cavity 102, the first vacuum channel 301 and the first vacuum cavity 401 on the bottom knife roller 1 are communicated, the air extractor can extract the air in the first negative pressure cavity 102, and the first vacuum suction hole 101 can also generate negative pressure, so that the paper sheet is firmly adsorbed to the side of the bottom knife roller 1 close to the cutting knife 2 under the action of air pressure, thereby ensuring the flatness of the cutting paper port.

[0030] By arranging the second air extraction plate 5 and arranging the second vacuum cavity 402 on the second air extraction plate 5, the air extraction area of the first vacuum cavity 401 and the second vacuum cavity 402 is no longer limited by the end surface area, so that the staff can increase the area of the first vacuum cavity 401 and the second vacuum cavity 402, and enhance the adsorption capacity of the bottom knife roller 1. This enables the bottom knife roller 1 to effectively adsorb paper sheets of different materials, thereby expanding the use range and applicability of the bottom knife roller 1.

[0031] Further, the first air extraction plate 4 is fixedly connected with the side of the rack through a fixing assembly, the fixing assembly comprises a plurality of connecting rods 6 arranged on the side of the first air extraction plate 4 and a fixing plate 601 arranged on the side of the connecting rods 6 away from the first air extraction plate 4, the fixing plate 601 is fixedly connected with the side of the rack through bolts, and the bottom knife roller 1 is rotationally connected with the fixing plate 601.

[0032] Specifically, the left and right sides of the connecting rod 6 are provided with threaded segments, and the rotation directions of the two threaded segments are opposite. The first air extraction plate 4 and the fixing plate 601 are respectively screwed with the two threaded segments. By arranging the two threaded segments, the staff can adjust the distance between the first air extraction plate 4 and the fixing plate 601 by rotating the connecting rod 6, so that the first air extraction plate 4 can closely adhere to the side of the bottom knife roller 1 of different lengths, and the applicability is further improved. Secondly, by rotating the connecting rod 6, the close contact between the flange plate 3 and the side of the first air extraction plate 4 can be ensured, the sealing between the flange plate 3 and the first air extraction plate 4 is improved, and thus the air extraction effect is improved.

[0033] Embodiment two:

[0034] On the basis of embodiment one, referring to Figure 9 In order to prevent the second air extraction plate 5 from rotating when the bottom knife roller 1 rotates, the second air extraction plate 5 is fixedly connected with the rack 702 through a connecting assembly, specifically, the connecting assembly comprises a screw rod 7 fixedly connected with the rack 702, a limiting rod 701 screwed with the screw rod 7, a supporting rod 703 having one end clamped with the limiting rod 701, the outer surface of the second air extraction plate 5 is provided with a clamping column 704, the bottom of the supporting rod 703 is provided with a clamping groove 705 clamped with the clamping column 704, and the top of the supporting rod 703 is provided with a limiting groove 706 clamped with the limiting rod 701.

[0035] By arranging the clamping column 704, the supporting rod 703, the limiting rod 701 and the screw rod 7, it is ensured that the second air extraction plate 5 does not rotate when the bottom knife roller 1 rotates. Since the limiting rod 701 is screwed with the screw rod 7, it can only move along the axial direction of the screw rod 7. One end of the supporting rod 703 is clamped with the limiting rod 701, and the other end is clamped with the clamping column 704, so that the radial degree of freedom of the second air extraction plate 5 is limited, the second air extraction plate 5 is prevented from rotating with the bottom knife roller 1, and it is ensured that the bottom knife roller 1 can effectively adsorb the paper sheet. When disassembling, the staff only needs to rotate the limiting rod 701 to make one end of the limiting rod 701 disengage from the limiting groove 706, and then the disassembly can be completed.

[0036] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A structure of a bottom roller, comprising a bottom roller (1), a flange plate (3) fixedly connected to one side of the bottom roller (1), a first air extraction plate (4) arranged on one side of the flange plate (3), and a first vacuum channel (301) and a second vacuum channel (302) arranged on an end face of one side of the flange plate (3), characterized in that, The second air exhaust plate (5) is arranged on the outer surface of the flange plate (3), the outer surface of the flange plate (3) is provided with an opening (502), the opening (502) is in communication with the inside of each second vacuum channel (302), the inner surface of the second air exhaust plate (5) is provided with a second vacuum cavity (402) in communication with the opening (502), and the second air exhaust plate (5) is provided with a second air pipe joint (501) in communication with the inside of the second vacuum cavity (402).

2. A bottom roller structure according to claim 1, characterized in that: The fixing assembly for fixing the first air exhaust plate (4) to the side of the rack comprises a plurality of connecting rods (6) arranged on the side of the first air exhaust plate (4) and a fixing plate (601) arranged on the side of the plurality of connecting rods (6) away from the first air exhaust plate (4), and the fixing plate (601) is fixed to the side of the rack by bolts.

3. A bottom roller structure according to claim 2, wherein: The left and right sides of the connecting rod (6) are provided with threaded sections, and the rotation directions of the two threaded sections are opposite, and the first air exhaust plate (4) and the fixing plate (601) are respectively screwed with the two threaded sections.

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