Forming device for reducing difference between two sides of kraft paper page

Abstract

The utility model discloses a forming device capable of reducing two-side difference of kraft paper, which relates to the technical field of kraft paper processing devices and comprises a mounting frame, a mounting groove is formed in one side of the mounting frame, a friction rod is fixedly connected to the inner side of the mounting groove, two pre-pressing rollers are arranged on one side of the mounting frame, and the friction rod is fixedly connected to the inner side of the mounting groove. The mounting frame is rotationally connected with the pre-pressing roller on the lower side, a fixing rod is fixedly connected to the inner cavity wall of the pre-pressing roller, two heating pipes are fixedly connected to the outer side of the fixing rod, a movable seat is movably connected to the outer side of a friction rod, the movable seat is rotationally connected with the pre-pressing roller on the upper side, a friction sleeve is embedded in the movable seat, and a friction rod is fixedly connected to the friction sleeve. The forming device for reducing the difference between the two sides of the kraft paper page is reasonable in structural design, the pressure applied to the pre-pressing roller above the forming device can be effectively increased, so that the pre-pressing roller can stably press the kraft paper, heat generated by the heating pipe can be uniformly guided and transmitted to the pre-pressing roller, and the pre-pressing roller is uniformly heated.

Description

Technical Field

[0001] This utility model relates to the technical field of kraft paper processing equipment, specifically a forming device for reducing the difference between the two sides of kraft paper sheets. Background Technology

[0002] Kraft paper forming equipment is a key piece of equipment in the papermaking process, mainly used to uniformly dewater pulp and form it into a continuous wet paper web. Its core structure typically includes a headbox (for uniform pulp distribution), a forming wire (for fiber dewatering and forming), vacuum dewatering elements (to enhance dewatering efficiency), and a drive system. By precisely controlling pulp concentration, wire speed, and dewatering pressure, it ensures the uniformity and physical properties of the paper. This equipment is widely used in the production of high-strength paper products such as packaging paper and kraft paper, featuring high-efficiency dewatering, energy saving, environmental protection, and a high degree of automation, directly affecting the paper's basis weight, strength, and surface quality.

[0003] The prior art application number is 202420992260.0, and the patent name is: A high-efficiency composite forming device for multi-layer kraft paper. It includes a worktable, a first fixed frame fixedly connected to the upper end of the worktable, a first stacking roller, a second stacking roller and a third stacking roller rotatably connected from left to right inside the first fixed frame, the other end of the spring fixedly connected to the sliding block, heating rods fixedly connected to the circumferential surfaces of the first fixed shaft and the second fixed shaft, and a hot pressing mechanism installed at the upper end of the worktable, and the hot pressing mechanism is located at the right end of the pre-press forming component. This invention accelerates the drying and curing of adhesive in kraft paper through the pre-compression forming component, ensuring excellent bonding of the laminated kraft paper. This eliminates the need for subsequent drying, saving the step of entering the drying mechanism, making the entire solution simpler, more efficient, and easier to use. However, the pre-compression roller pressing mechanism uses a spring to apply pressure to the upper pre-compression roller for initial compression of the kraft paper. The pressure provided by the spring is relatively limited, resulting in insufficient compression during the pre-compression stage, which may affect the efficiency of subsequent dewatering and forming. Furthermore, although the pre-compression roller is equipped with a heating tube, the small contact area between the heating tube and the inner wall of the roller leads to low heat transfer efficiency, easily causing uneven heating of the pre-compression roller. This uneven temperature distribution not only reduces heating efficiency but may also affect the uniformity of dewatering and surface smoothness of the kraft paper due to localized overheating or underheating, thus adversely affecting the quality stability of the finished paper. Therefore, a new technical solution is needed to address these issues. Utility Model Content

[0004] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a forming device for reducing the difference between the two sides of kraft paper sheets, comprising a mounting frame, a mounting groove on one side of the mounting frame, a friction rod fixedly connected to the inner side of the mounting groove, two pre-pressing rollers on one side of the mounting frame, the mounting frame being rotatably connected to the lower pre-pressing roller, a fixing rod fixedly connected to the inner wall of the pre-pressing roller, and two heating tubes fixedly connected to the outer side of the fixing rod. Through a pressure applying mechanism, the pressure applied to the upper pre-pressing roller can be effectively increased, enabling the pre-pressing roller to stably press the kraft paper, thereby improving the dehydration and forming efficiency of the kraft paper. Through a heat conducting mechanism, the heat generated by the heating tubes can be evenly guided and transferred to the pre-pressing roller, so that the pre-pressing roller is evenly heated, thereby heating the kraft paper and improving the dehydration uniformity and surface smoothness of the kraft paper.

[0006] Preferably, a movable seat is movably connected to the outer side of the friction rod, and the movable seat is rotatably connected to the upper preload roller. A friction sleeve is embedded inside the movable seat, and the inner side of the friction sleeve is in contact with the friction rod. Damping is generated by friction between the friction sleeve and the friction rod.

[0007] Preferably, a compression spring is sleeved on the outer side of the friction rod, and the compression spring is located above the movable seat. The compression spring deforms to apply pressure to the movable seat.

[0008] Preferably, a first repulsive magnet is fixedly connected to the inner side of the mounting groove, and a second repulsive magnet is fixedly connected to the top of the movable seat. The repulsive force generated by the first and second repulsive magnets applies pressure to the movable seat.

[0009] Preferably, a heater is fixedly connected to one end of the pre-pressing roller, and one end of the heating tube passes through the pre-pressing roller and extends to the outside of the pre-pressing roller. The heating tube is fixedly connected to the heater, and the annular heat-conducting plate is heated by the heating tube, so that the annular heat-conducting plate transfers heat to the corrugated heat-conducting plate.

[0010] Preferably, an annular heat-conducting plate is fixedly connected between the outer sides of the two heating tubes. The outer side of the annular heat-conducting plate extends into the interior of the pre-pressure roller, and the annular heat-conducting plates are arranged in sequence to uniformly guide heat to the pre-pressure roller through the evenly distributed annular heat-conducting plates.

[0011] Preferably, corrugated heat-conducting plates are fixedly connected to the outer sides of the annular heat-conducting plates. The outer sides of the corrugated heat-conducting plates extend into the interior of the pre-pressing roller, and the corrugated heat-conducting plates are evenly distributed in sequence. The heat of the annular heat-conducting plates is further evenly transferred through the evenly distributed corrugated heat-conducting plates.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This forming device for reducing the difference between the two sides of kraft paper sheets can effectively increase the pressure applied to the upper pre-press roller through the pressure application mechanism, so that the pre-press roller can stably press the kraft paper and improve the efficiency of kraft paper dewatering and forming.

[0014] 2. This forming device for reducing the difference between the two sides of kraft paper sheets can evenly guide and transfer the heat generated by the heating tube to the pre-pressing roller through the heat conduction mechanism, so that the pre-pressing roller is evenly heated, thereby heating the kraft paper and improving the dehydration uniformity and surface smoothness of the kraft paper. Attached Figure Description

[0015] Figure 1 This is a front-view three-dimensional structural schematic diagram of a forming device for reducing the difference between the two sides of kraft paper sheets according to the present invention.

[0016] Figure 2 This is a three-dimensional cross-sectional view of the pre-pressure roller structure of a forming device for reducing the difference between the two sides of kraft paper sheets, as proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the left-side plan view of a forming device for reducing the difference between the two sides of kraft paper sheets according to the present invention.

[0018] Figure 4 This utility model proposes a forming device to reduce the difference between the two sides of kraft paper sheets. Figure 1 Enlarged structural diagram at point A in the middle;

[0019] In the diagram: 100, mounting bracket; 110, mounting groove; 120, friction rod; 130, movable seat; 131, friction sleeve; 140, compression spring; 150, first repulsive magnet; 160, second repulsive magnet; 200, pre-pressure roller; 210, fixing rod; 220, heating tube; 230, heater; 240, annular heat-conducting plate; 250, corrugated heat-conducting plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to again Figure 1-4 This utility model provides a forming device for reducing the difference between the two sides of kraft paper sheets, including a mounting frame 100. A mounting groove 110 is provided on one side of the mounting frame 100. A friction rod 120 is fixedly connected to the inner side of the mounting groove 110. A movable seat 130 is movably connected to the outer side of the friction rod 120. The movable seat 130 is rotatably connected to the upper pre-pressure roller 200. A friction sleeve 131 is embedded inside the movable seat 130, and the inner side of the friction sleeve 131 is in contact with the friction rod 120. A compression spring 140 is sleeved on the outer side of the friction rod 120 and is located above the movable seat 130. A first repulsive magnet 150 is fixedly connected to the inner side of the mounting groove 110, and a second repulsive magnet 160 is fixedly connected to the top of the movable seat 130.

[0022] Specifically, when the upper pre-pressure roller 200 presses the kraft paper between the upper and lower pre-pressure rollers 200, the compression spring 140 deforms to apply pressure to the movable seat 130, causing the pre-pressure roller 200 on the movable seat 130 to press the kraft paper. At the same time, when the friction sleeve 131 on the movable seat 130 contacts the friction rod 120, the rough surfaces of both require a large force for the movable seat 130 to move on the friction rod 120. Therefore, the pre-pressure roller 200 on the movable seat 130 can press the kraft paper more stably. Meanwhile, the first repulsive magnet 150 installed on the mounting groove 110 will generate a repulsive force with the second repulsive magnet 160 installed on the movable seat 130, further pressing the movable seat 130 and further increasing the pressing effect of the upper pre-pressure roller 200 on the kraft paper.

[0023] Example 2: Please refer to again Figure 1-4Two pre-pressure rollers 200 are provided on one side of the mounting frame 100. The mounting frame 100 is rotatably connected to the lower pre-pressure roller 200. A fixing rod 210 is fixedly connected to the inner wall of the pre-pressure roller 200. Two heating tubes 220 are fixedly connected to the outer side of the fixing rod 210. A heater 230 is fixedly connected to one end of the pre-pressure roller 200. One end of the heating tube 220 passes through the pre-pressure roller 200 and extends to the outer side of the pre-pressure roller 200. One end of the heating tube 220 is fixedly connected to the heater 230. An annular heat-conducting plate 240 is fixedly connected between the outer sides of the two heating tubes 220. The outer side of the annular heat-conducting plate 240 extends into the interior of the pre-pressure roller 200. The annular heat-conducting plates 240 are arranged in sequence. A corrugated heat-conducting plate 250 is fixedly connected between the outer sides of the annular heat-conducting plates 240. The outer side of the corrugated heat-conducting plate 250 extends into the interior of the pre-pressure roller 200. The corrugated heat-conducting plates 250 are evenly distributed in sequence.

[0024] Specifically, the heat from the heating tube 220 is absorbed by the uniformly distributed annular heat-conducting plates 240 installed on the heating tube 220. The heat absorbed by the heat-conducting plates is then transferred to the uniformly distributed corrugated heat-conducting plates 250. The heat is then transferred from the annular heat-conducting plates 240 and the corrugated heat-conducting plates 250 to the pre-pressure roller 200, so that the pre-pressure roller 200 can be heated evenly.

[0025] Working principle: When the upper pre-pressure roller 200 presses the kraft paper between the upper and lower pre-pressure rollers 200, the compression spring 140 deforms and applies pressure to the movable seat 130, so that the pre-pressure roller 200 on the movable seat 130 presses the kraft paper. At the same time, when the friction sleeve 131 on the movable seat 130 contacts the friction rod 120, the rough surfaces of the two require a large force when the movable seat 130 moves on the friction rod 120, so that the pre-pressure roller 200 on the movable seat 130 can press the kraft paper more stably. At the same time, the first repulsive magnet 150 installed on the mounting groove 110 will generate a repulsive force with the second repulsive magnet 160 installed on the movable seat 130, further pressing the movable seat 130, so that the pressing effect of the upper pre-pressure roller 200 on the kraft paper is further increased.

[0026] The heat from the heating tube 220 is absorbed by the uniformly distributed annular heat-conducting plates 240 installed on the heating tube 220. The heat absorbed by the heat-conducting plates is then transferred to the uniformly distributed corrugated heat-conducting plates 250. The heat is then transferred from the annular heat-conducting plates 240 and the corrugated heat-conducting plates 250 to the pre-pressure roller 200, so that the pre-pressure roller 200 can be heated evenly.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A forming apparatus for reducing the difference between the two sides of kraft paper sheets, comprising a mounting frame (100), characterized in that, The mounting bracket (100) has a mounting groove (110) on one side, and a friction rod (120) is fixedly connected to the inner side of the mounting groove (110). Two pre-pressure rollers (200) are provided on one side of the mounting frame (100). The mounting frame (100) is rotatably connected to the lower pre-pressure roller (200). A fixing rod (210) is fixedly connected to the inner wall of the pre-pressure roller (200). Two heating tubes (220) are fixedly connected to the outer side of the fixing rod (210).

2. The forming apparatus for reducing the difference between the two sides of kraft paper sheets as described in claim 1, characterized in that, A movable seat (130) is movably connected to the outside of the friction rod (120). The movable seat (130) is rotatably connected to the upper preload roller (200). A friction sleeve (131) is embedded inside the movable seat (130), and the inner side of the friction sleeve (131) is in contact with the friction rod (120).

3. The forming apparatus for reducing the difference between the two sides of kraft paper sheets as described in claim 2, characterized in that, A compression spring (140) is sleeved on the outside of the friction rod (120), and the compression spring (140) is located above the movable seat (130).

4. The forming apparatus for reducing the difference between the two sides of kraft paper sheets as described in claim 3, characterized in that, A first repulsive magnet (150) is fixedly connected to the inner side of the mounting groove (110), and a second repulsive magnet (160) is fixedly connected to the top of the movable seat (130).

5. The forming apparatus for reducing the difference between the two sides of kraft paper sheets as described in claim 1, characterized in that, A heater (230) is fixedly connected to one end of the pre-pressing roller (200), and one end of the heating tube (220) passes through the pre-pressing roller (200) and extends to the outside of the pre-pressing roller (200), and one end of the heating tube (220) is fixedly connected to the heater (230).

6. The forming apparatus for reducing the difference between the two sides of kraft paper sheets as described in claim 5, characterized in that, An annular heat-conducting plate (240) is fixedly connected between the outer sides of the two heating tubes (220). The outer side of the annular heat-conducting plate (240) extends into the interior of the pre-pressing roller (200), and the annular heat-conducting plates (240) are arranged in sequence.

7. The forming apparatus for reducing the difference between the two sides of kraft paper sheets as described in claim 6, characterized in that, A corrugated heat-conducting plate (250) is fixedly connected between the outer sides of the annular heat-conducting plate (240). The outer side of the corrugated heat-conducting plate (250) extends into the interior of the pre-pressing roller (200), and the corrugated heat-conducting plates (250) are evenly distributed in sequence.

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