A tension control device for a wide handkerchief paper making felt

Abstract

The utility model belongs to the field of tension control equipment, especially a kind of wide handkerchief paper papermaking felt tension control device, including mounting bracket, the bottom of mounting bracket is equipped with the control component one for papermaking felt middle position tension control, the bottom of mounting bracket is equipped with two control component two for papermaking felt edge position tension control;Control component one includes push rod motor one, mounting plate one, pressure sensor one, U-shaped frame one and roller one, the bottom of mounting bracket is equipped with push rod motor one, push rod motor one's output shaft is fixedly installed with mounting plate one, the bottom of mounting plate one is equipped with pressure sensor one, the bottom of pressure sensor one is equipped with U-shaped frame one.The utility model design is reasonable, by papermaking felt middle and edge area are independently tension control, combination real-time pressure feedback realizes intelligent adjustment, and can be adapted to different width felt, effectively promoted felt tension uniformity and control precision, guarantee the wide handkerchief paper production quality.

Description

Technical Field

[0001] This utility model relates to the field of tension control equipment technology, and in particular to a tension control device for wide-width hand towel paper making blankets. Background Technology

[0002] In the production of wide-width hand towels, the papermaking felt, as a key transmission and pressing component, directly affects the flatness, basis weight uniformity, and production efficiency of the paper.

[0003] However, the production width of wide-width hand towels typically reaches 3-5 meters. Traditional tension control devices mostly adopt a single-roller overall control method, which has the following problems: the tension detection point is singular, that is, the tension of the entire blanket is adjusted through a single control component, which cannot accurately control the tension differences in different areas of the blanket. This control method has low precision and is difficult to adapt to the high requirements for the uniformity of blanket tension in wide-width hand towel production. It also cannot fully reflect the tension distribution of wide-width blankets and accurately control the tension. Therefore, we propose a tension control device for wide-width hand towel papermaking blankets to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tension control device for wide-width hand towel paper making blankets.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A tension control device for wide-width paper towel making blankets includes a mounting frame. The bottom of the mounting frame has a control component one for tension control at the center of the paper towel, and two control components two for tension control at the edges of the paper towel. The control component one includes a push rod motor, a mounting plate, a pressure sensor, a U-shaped frame, and a roller. The push rod motor is mounted at the bottom of the mounting frame, and the output shaft of the push rod motor is fixedly mounted on the mounting plate. The pressure sensor is mounted at the bottom of the mounting plate, and the U-shaped frame is mounted at the bottom of the pressure sensor. A roller is rotatably mounted inside the U-shaped frame. The control components two include an adjustment plate, a push rod motor, a mounting plate, a pressure sensor, a U-shaped frame, and a roller. Two adjustment plates are slidably mounted at the bottom of the mounting frame. The push rod motor is fixedly mounted at the bottom of the adjustment plates, and the output shaft of the push rod motor is fixedly mounted on the mounting plate. The pressure sensor is mounted at the bottom of the mounting plate, and the U-shaped frame is mounted at the bottom of the pressure sensor. A roller is rotatably mounted inside the U-shaped frame.

[0006] Preferably, a controller is mounted on the top of the mounting bracket, and push rod motor one, push rod motor two, pressure sensor one, and pressure sensor two are all electrically connected to the controller.

[0007] Preferably, two guide sleeves are fixedly installed at the bottom of both the mounting bracket and the adjusting plate. Guide rods are slidably installed inside the guide sleeves. The bottom ends of the two guide rods located in the middle are fixedly installed on the first mounting plate, and the bottom ends of the two guide rods located on both sides are fixedly installed on the corresponding second mounting plates.

[0008] Preferably, multiple limiting seats are fixedly installed at the bottom of the mounting bracket, and the same limiting rod is fixedly installed between two corresponding limiting seats, and the adjusting plate is slidably installed on the limiting rod.

[0009] Preferably, the top of the mounting bracket is provided with an adjustment hole, an adjustment seat is slidably installed in the adjustment hole, and the adjustment seat is fixedly installed on the corresponding adjustment plate.

[0010] Preferably, two connecting seats are fixedly installed on the top of the mounting bracket. The connecting seats have threaded holes, and a threaded rod is threadedly installed in the threaded holes. One end of the threaded rod is rotatably installed on the corresponding adjusting seat, and the other end of the threaded rod is fixedly installed with a handwheel.

[0011] Preferably, the threaded rod has two locking nuts threaded onto it, and the connecting seat is located between the two corresponding locking nuts.

[0012] Preferably, a rotating groove is provided on one side of the adjusting seat, and an annular groove is provided on the inner wall of the rotating groove. An annular seat that is rotatably connected to the annular groove is fixedly installed at one end of the threaded rod.

[0013] The beneficial effects of this utility model are: 1. By setting up control component one and two control components two, the tension of the papermaking blanket can be independently adjusted at the middle position and the two side edges respectively, which effectively solves the problem of uneven tension of wide blankets, improves the overall uniformity of blanket tension, and thus ensures the production quality of wide paper towels. 2. Pressure sensors 1 and 2 detect the pressure signal between the roller and the blanket in real time and transmit the signal to the controller. The controller automatically controls the action of push rod motor 1 and push rod motor 2 according to preset parameters to realize closed-loop control of tension, improve the control accuracy and response speed, and avoid the lag and error of manual control. 3. By rotating the handwheel, the adjusting plate can be slid along the limit rod to adjust the distance between the two control components, which can be adapted to wide papermaking blankets of different widths, thus improving the versatility of the device. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a tension control device for a wide-width hand towel papermaking blanket proposed in this utility model. Figure 2A bottom-view three-dimensional structural diagram of a tension control device for a wide-width hand towel papermaking blanket proposed in this utility model; Figure 3 This is a partial cross-sectional three-dimensional structural schematic diagram of a tension control device for wide-width hand towel paper making blankets proposed in this utility model; Figure 4 This is a schematic diagram of part A of a tension control device for a wide-width hand towel / papermaking blanket proposed in this utility model.

[0015] In the diagram: 1. Mounting bracket; 201. Push rod motor one; 202. Mounting plate one; 203. Pressure sensor one; 204. U-shaped frame one; 205. Roller one; 301. Adjusting plate; 302. Push rod motor two; 303. Mounting plate two; 304. Pressure sensor two; 305. U-shaped frame two; 306. Roller two; 401. Guide sleeve; 402. Guide rod; 501. Limit seat; 502. Limit rod; 601. Adjusting hole; 602. Adjusting seat; 603. Connecting seat; 604. Threaded hole; 605. Threaded rod; 606. Handwheel; 607. Locking nut; 7. Controller. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0017] This application discloses a tension control device for wide-width hand towel paper making blankets.

[0018] Reference Figure 1-4 A tension control device for wide-width paper towel making blankets includes a mounting frame 1. The bottom of the mounting frame 1 is equipped with a control component 1 for controlling the tension in the middle of the paper towel. Two symmetrically distributed control components 2 are located on both sides of the bottom of the mounting frame 1 for controlling the tension at the edges of the paper towel. The control component 1 consists of a push rod motor 201, a mounting plate 202, a pressure sensor 203, a U-shaped frame 204, and a roller 205. The push rod motor 201 is fixed to the center of the bottom of the mounting frame 1. The output shaft is positioned downwards and fixedly connected to the mounting plate 202. The bottom of the mounting plate 202 is fixedly mounted with a pressure sensor 203 by an internal hex screw. The pressure sensor 203 is model PTG-PT124G-111, which has high-precision pressure detection capability. A U-shaped frame 204 is welded to the bottom of the pressure sensor 203. A roller 205 rotates inside the U-shaped frame 204. The outer surface of the roller 205 is covered with a wear-resistant silicone layer to reduce wear on the blanket.

[0019] In this embodiment, the second control component includes an adjustment plate 301, a second push rod motor 302, a second mounting plate 303, a second pressure sensor 304, a second U-shaped frame 305, and a second roller 306. Four limiting seats 501 are welded to the bottom of the mounting frame 1, and a limiting rod 502 is welded between every two opposing limiting seats 501. The adjustment plate 301 is slidably fitted onto the limiting rod 502 through an opening, allowing it to slide freely along the limiting rod 502. The second push rod motor 302 is fixedly installed at the center of the bottom of the adjustment plate 301. The second actuator motor 302 is the same model as the first actuator motor 201, both being DT series servo actuator motors. The output shaft of the second actuator motor 302 faces downward and is connected to the second mounting plate 303. The bottom of the second mounting plate 303 is fixed with screws to the second pressure sensor 304, which is the same model as the first pressure sensor 203. The bottom of the second pressure sensor 304 is fixedly mounted with a U-shaped frame 305. The second roller 306 is rotatably mounted inside the U-shaped frame 305. The structure of the second roller 306 is exactly the same as that of the first roller 205.

[0020] In this embodiment, the top of the mounting bracket 1 is fixedly mounted with a controller 7 by an angle steel bracket. The controller 7 is an S7-200 SMART series PLC. The push rod motor 1 201, push rod motor 2 302, pressure sensor 1 203 and pressure sensor 2 304 are all electrically connected to the controller 7. The pressure signal detected by the pressure sensor is transmitted to the controller 7. The controller 7 controls the extension and retraction of the push rod motor according to the preset pressure and tension parameters to realize automatic tension regulation.

[0021] In this embodiment, to improve the stability of the movement of mounting plate 202 and mounting plate 303, two guide sleeves 401 are welded to the bottom of the mounting frame 1 at the position corresponding to mounting plate 202, and two guide sleeves 401 are also welded to the bottom of the adjusting plate 301 at the position corresponding to mounting plate 303. Guide rods are slidably inserted into the guide sleeves 401, and the bottom ends of the guide rods are fixedly connected to mounting plate 202 and mounting plate 303 respectively.

[0022] In this embodiment, the top of the mounting frame 1 is provided with two elongated adjustment holes 601. The length direction of the adjustment holes 601 is consistent with that of the limiting rod 502. An adjustment seat 602 is slidably installed in the adjustment holes 601. Its bottom is fixedly connected to the adjustment plate 301, and its top extends to the top of the mounting frame 1. Connecting seats 603 are welded to the two ends of the top of the mounting frame 1 corresponding to the adjustment holes 601. A threaded hole 604 is provided on the connecting seat 603. A threaded rod 605 is threadedly installed in the threaded hole 604. One end of the threaded rod 605 is rotatably installed on the side of the adjustment seat 602 through a deep groove ball bearing, and the other end is welded with a handwheel 606. Rotating the handwheel 606 can drive the adjustment seat 602 to slide along the adjustment hole 601, thereby adjusting the distance between the two control components to adapt to papermaking felts of different widths.

[0023] In this embodiment, two locking nuts 607 are threaded onto the threaded rod 605. The two locking nuts 607 are located on both sides of the connecting seat 603. After the position of the adjusting plate 301 is adjusted, the two locking nuts 607 are tightened to fix the threaded rod 605 and prevent it from rotating on its own during the operation of the device. A rotating groove is provided on the side of the adjusting seat 602, and an annular groove is provided on the inner wall of the rotating groove. An annular seat is welded to the end of the threaded rod 605. The annular seat is rotatably locked in the annular groove, so that the threaded rod 605 can rotate freely relative to the adjusting seat 602, while preventing the two from separating.

[0024] In this invention, before producing wide-width hand towels, the handwheel 606 is rotated to drive the threaded rod 605 to rotate according to the width of the papermaking blanket, pushing the adjusting seat 602 to slide along the adjusting hole 601, thereby adjusting the distance between the two control components, so that the side of the two rollers 306 that are far apart from each other corresponds to the two edges of the blanket in the width direction. After the adjustment is completed, the two locking nuts 607 are tightened so that they abut against the two sides of the connecting seat 603 respectively, thereby fixing the threaded rod 605 to the connecting seat 603, thus strengthening the adjusting seat 602 and the adjusting plate 301 and preventing them from loosening during operation. During operation, the papermaking felt passes under rollers 205 and 306, contacting their surfaces and generating pressure. Pressure sensors 203 and 304 transmit the detected pressure signals to the controller 7 in real time. The controller 7 compares the detected pressure values ​​with preset standard pressure values. If the pressure value in a certain area is lower than the standard value, it indicates insufficient felt tension in that area. For example, if the felt tension on the right side is insufficient, the controller 7 extends the push rod motor 302 on the right side, pushing roller 306 downwards to increase pressure on the felt and thus improve tension in that area. If the pressure value in the middle is higher than the standard value, it indicates excessive felt tension in that area. The controller 7 shortens the corresponding push rod motor 201, moving roller 205 upwards to reduce pressure on the felt and lower tension. This closed-loop control method achieves precise and stable tension control in the middle and edge areas of the papermaking felt.

[0025] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tension control device for wide-width hand towel paper making blankets, characterized in that, Includes a mounting frame (1), the bottom of which is provided with a control component one for adjusting the tension of the middle position of the papermaking blanket, and the bottom of the mounting frame (1) is provided with two control components two for adjusting the tension of the edge position of the papermaking blanket. The control component includes a push rod motor (201), a mounting plate (202), a pressure sensor (203), a U-shaped frame (204), and a roller (205). The push rod motor (201) is mounted on the bottom of the mounting frame (1). The output shaft of the push rod motor (201) is fixedly mounted on the mounting plate (202). The pressure sensor (203) is mounted on the bottom of the mounting plate (202). The U-shaped frame (204) is mounted on the bottom of the pressure sensor (203). The roller (205) is rotatably mounted inside the U-shaped frame (204). The second control component includes an adjustment plate (301), a second push rod motor (302), a second mounting plate (303), a second pressure sensor (304), a second U-shaped frame (305), and a second roller (306). Two adjustment plates (301) are slidably mounted on the bottom of the mounting frame (1). The second push rod motor (302) is fixedly mounted on the bottom of the adjustment plate (301). The output shaft of the second push rod motor (302) is fixedly mounted on the second mounting plate (303). The second pressure sensor (304) is mounted on the bottom of the second mounting plate (303). The second U-shaped frame (305) is mounted on the bottom of the second pressure sensor (304). The second roller (306) is rotatably mounted inside the second U-shaped frame (305).

2. The tension control device for wide-width hand towel paper making blankets according to claim 1, characterized in that, The top of the mounting bracket (1) is equipped with a controller (7), and push rod motor one (201), push rod motor two (302), pressure sensor one (203) and pressure sensor two (304) are all electrically connected to the controller (7).

3. The tension control device for wide-width hand towel paper making blankets according to claim 1, characterized in that, The bottom of the mounting bracket (1) and the adjusting plate (301) are both fixedly installed with two guide sleeves (401). Guide rods are slidably installed inside the guide sleeves (401). The bottom ends of the two guide rods in the middle are fixedly installed on the mounting plate one (202), and the bottom ends of the two guide rods on both sides are fixedly installed on the corresponding mounting plate two (303).

4. The tension regulating device for wide-width hand towel papermaking blankets according to claim 1, characterized in that, Multiple limiting seats (501) are fixedly installed at the bottom of the mounting bracket (1), and the same limiting rod (502) is fixedly installed between two corresponding limiting seats (501), and the adjusting plate (301) is slidably installed on the limiting rod (502).

5. The tension regulating device for wide-width hand towel papermaking blankets according to claim 1, characterized in that, The top of the mounting bracket (1) is provided with an adjustment hole (601), and an adjustment seat (602) is slidably installed in the adjustment hole (601), and the adjustment seat (602) is fixedly installed on the corresponding adjustment plate (301).

6. The tension regulating device for wide-width hand towel papermaking blankets according to claim 1, characterized in that, The top of the mounting bracket (1) is fixedly installed with two connecting seats (603). The connecting seats (603) are provided with threaded holes (604). A threaded rod (605) is installed in the threaded hole (604). One end of the threaded rod (605) is rotatably installed on the corresponding adjusting seat (602). The other end of the threaded rod (605) is fixedly installed with a handwheel (606).

7. The tension regulating device for wide-width hand towel papermaking blankets according to claim 6, characterized in that, The threaded rod (605) has two locking nuts (607) threaded on it, and the connecting seat (603) is located between the two corresponding locking nuts (607).

8. The tension regulating device for wide-width hand towel papermaking blankets according to claim 6, characterized in that, The adjusting seat (602) has a rotating groove on one side, and an annular groove is provided on the inner wall of the rotating groove. One end of the threaded rod (605) is fixedly installed with an annular seat that is rotatably connected to the annular groove.

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