A papermaking boot cover rotary casting molding device and molding method

Abstract

The present invention discloses a papermaking boot sleeve rotary casting molding device and a molding method thereof, which relate to the papermaking field, include a base, a support seat, a roller, a stand and a pre-woven tubular fabric sleeve, and also include a shaping ring for leveling the pre-woven tubular fabric sleeve so that it fits against the inner wall of the roller; a sprayer for spraying polyurethane coating on the inside of the roller and the inside of the pre-woven tubular fabric sleeve respectively; a displacement mechanism for driving the shaping ring to move; a driving mechanism for driving the displacement mechanism and the roller to operate respectively; a drying mechanism for accelerating the molding speed of the papermaking boot sleeve; a connecting mechanism for connecting the shaping ring and the pre-woven tubular fabric sleeve; the papermaking boot sleeve rotary casting molding device and the molding method thereof effectively improve the uniformity of the spraying and casting of the pre-woven tubular fabric sleeve, drive the pre-woven tubular fabric sleeve to fit tightly against the inner wall of the roller, ensure the quality of the papermaking boot sleeve after molding, and avoid the problem of uneven heating of the pre-woven tubular fabric sleeve.

Description

Technical Field

[0001] The invention relates to papermaking technology, in particular to a papermaking boot cover rotary casting molding device and a molding method thereof. Background Art

[0002] The pressing method of the papermaking press section has undergone many technological changes, from the earliest flat press to the later groove press, vacuum press, and blind hole press. The above pressing methods are essentially roller presses. Their characteristics are that the pressing felt and the wet paper web pass through the nip area where two rollers press against each other, and the paper web is dehydrated by the pressure of the nip area. The two most important technical indicators for measuring its pressing efficiency are the nip pressure and the nip width. In order to improve the pressing efficiency, paper machine technicians have designed many pressing methods, such as multi-nip straight-through pressing, multi-nip composite pressing, etc., which combine various pressing methods such as flat pressing, groove pressing, vacuum pressing, and blind hole pressing. The purpose is to improve the pressing efficiency and improve the quality of paper sheets. As early as the early 1980s, BELOIT designed a wide nip press, which was the prototype of the later shoe press. The shoe press has developed to the present day and is a more mature and more effective pressing method. Compared with the traditional roller press, the shoe press can provide a wider nip, a larger nip pressure, and a longer nip residence time. In addition, the shoe press has an incomparable advantage over the roller press, that is, the pressure in the entire nip of the shoe press is uniform, unlike the peak pressure in the nip of the roller press. The use of the shoe press can increase the dryness of the paper sheet by 2%. The above greatly saves steam consumption in the drying section and reduces paper machine operating costs. At the same time, since the shoe press acts on the paper web for a long time and the pressure in the nip area is uniform, it can significantly improve quality indicators such as paper sheet tightness.

[0003] A method for forming a papermaking boot cover is disclosed in a Chinese invention patent with the announcement number CN103938480B, which belongs to the field of papermaking technology. It includes uniformly spraying or pouring a polyurethane coating on the inner surface of a rotating cylinder; laying a prefabricated cylindrical woven fabric cover on the surface of the polyurethane coating; uniformly spraying or pouring a polyurethane coating on the inner surface of the prefabricated cylindrical woven fabric cover; thermal curing; unsealing the two ends of the rotating cylinder, and sealing the two ends of the coating with a coating sealing pressure ring, vacuuming, and then lathing the coating surface; polishing the coating surface; removing the coating sealing pressure ring, and demoulding. The beneficial effects of the present invention are: first, molding and finishing can be completed in one go without demoulding, and no additional special processing equipment is required, and the finished product has high dimensional accuracy; second, the fiber reinforcement layer has high layout accuracy, and the distance from the fiber layer to the two surfaces can be controlled quite accurately both theoretically and in practice; third, the composition of the polyurethane spray or pouring material can be flexibly adjusted according to the different requirements of the inner and outer surfaces of the boot cover, which makes the production process easy;

[0004] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: the spraying is a fixed setting, which makes it difficult to ensure the uniformity of spraying and casting the pre-woven tubular fabric sleeve inside the drum, and thus it is difficult to ensure its quality after molding. In addition, when the inside of the drum is subjected to heat conduction drying, the pre-woven tubular fabric sleeve is heated unevenly, which also affects its molding quality. For this reason, this scheme proposes a papermaking boot sleeve rotary casting molding device and a molding method thereof. Summary of the Invention

[0005] The purpose of the present invention is to provide a papermaking boot cover rotary casting molding device and a molding method thereof to solve the above-mentioned deficiencies in the prior art.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a papermaking boot cover rotary casting molding device, comprising a base, a support seat, a drum, a stand, and a pre-woven tubular fabric cover, wherein the support seat and the stand are both mounted on the top of the base, and the drum is rotatably connected to the top of the support seat, and further comprising a shaping ring, which is disposed inside the drum and is used to flatten the pre-woven tubular fabric cover so that it fits the inner wall of the drum;

[0007] A sprayer is installed on the shaping ring and is used to spray polyurethane coating on the inside of the drum and the inside of the pre-woven tubular fabric cover respectively;

[0008] A displacement mechanism is provided inside the drum and is used to drive the shaping ring to move;

[0009] The driving mechanism is installed on the stand and is used to drive the displacement mechanism and the roller to operate respectively;

[0010] The drying mechanism is installed on the shaping ring to accelerate the forming speed of the papermaking boot;

[0011] The connecting mechanism is installed on the shaping ring and is used for connecting the shaping ring and the pre-woven tubular fabric sleeve.

[0012] Furthermore, the displacement mechanism includes a fixed shaft fixed to the outer wall of the stand along the axial direction of the roller, a first screw fixed to one end of the fixed shaft, a driving disk rotatably connected to one end of the roller, and two driving rods fixed to the outer wall of the driving disk close to the inner side of the roller, the first screw is located inside the roller, the driving disk is sleeved on the outside of the fixed shaft, the two driving rods are symmetrically arranged on both sides of the first screw and are parallel to the first screw, and the shaping ring is slidingly sleeved on the outside of the two driving rods.

[0013] Furthermore, the outside of the first screw is screwed with a threaded sleeve, and the outside of the threaded sleeve is fixedly sleeved with a connecting frame fixed to the inner wall of the shaping ring. There are two sprayers, and the two sprayers are symmetrically connected to the outer walls on both sides of the connecting frame through the first support block. There are two drying mechanisms, and the two drying mechanisms are symmetrically connected to the outer walls on both sides of the connecting frame through the second support block. The sprayers and drying mechanisms are symmetrically arranged with the first screw as the center.

[0014] Furthermore, the driving mechanism includes a first motor mounted on the outer wall of the stand, a first gear fixedly sleeved on the outside of the first motor output shaft, a driving sleeve sleeved on the outside of the fixed shaft, a second gear fixedly sleeved on the outside of the driving sleeve, a transmission shaft rotatably connected to the outer wall of the stand, a third gear fixedly sleeved on the outside of the transmission shaft and a transmission assembly transmission-connected between the transmission shaft and the roller, the driving sleeve is fixedly connected to the outer wall of the driving disk, and the first gear is respectively engaged with the second gear and the third gear.

[0015] Furthermore, the transmission assembly includes a gear ring fixedly sleeved on the outside of the drum and a fourth gear fixedly sleeved on the outside of the transmission shaft, and the fourth gear is meshed with the gear ring.

[0016] Furthermore, a ventilation pipe is connected to the outer wall of the drum, and a detachable sealing cover is installed at the other end of the drum.

[0017] Furthermore, the drying mechanism includes a shell mounted on the second support block, a second motor mounted on the inner wall of the shell, fan blades fixedly sleeved on the outside of the second motor output shaft, a heating wire mounted inside the shell, a cover plate mounted on the end of the shell away from the second support block, and a linkage assembly for driving the cover plate to move, a T-slot is radially provided at the end of the shell away from the second support block, a T-strip is slidably connected inside the T-slot, and the T-strip is fixedly connected to the outer wall of the cover plate.

[0018] Furthermore, the linkage assembly includes a second screw connected to the inside of the shell axially, a connecting block screwed on the outside of the second screw, a connecting rod hinged on the outer wall of the connecting block, and two fifth gears fixedly sleeved on the second screw and the outside of the second motor output shaft, the other end of the connecting rod is hinged to the outer wall of the T-bar, and the two fifth gears are meshed with each other. The end of the second screw close to the cover plate is fixedly connected to a light rod, the diameter of the light rod is smaller than the diameter of the second screw, and a slider is slidably sleeved on the outside of the light rod. A spring is also sleeved on the outside of the light rod, and the end of the second screw away from the light rod is rotatably connected to a third support block fixed to the inner wall of the shell, one end of the spring is fixed to the outer wall of the slider, and the other end of the spring is fixed to the outer wall of the third support block close to the side of the light rod.

[0019] Furthermore, the connecting mechanism includes a movable groove opened inside the shaping ring, an electric push rod installed on the inner wall of the movable groove, and an abutment block installed at the extended end of the electric push rod, and the abutment block extends to the outside of the shaping ring.

[0020] A papermaking boot cover rotation casting method comprises the following steps:

[0021] S1. First, the driving mechanism is started to drive the drum and the driving disc to rotate in different directions. During this process, the sprayers on both sides of the shaping ring are driven to move along the length direction of the drum to spray the urethane coating on the inner wall of the drum;

[0022] S2. After the inner wall of the drum is sprayed, the pre-woven tubular fabric cover is inserted into the drum, and then the driving mechanism is started again to repeat step S1. By driving the sprayers on both sides of the shaping ring to move along the length direction of the drum, the inner wall of the pre-woven tubular fabric cover is sprayed with a urethane coating;

[0023] S3. After the inner wall of the pre-woven tubular fabric sleeve is sprayed, the driving mechanism is started again to repeat step S1, and the drying mechanisms on both sides of the shaping ring are driven to move along the length direction of the drum to uniformly accelerate the curing speed of the papermaking boot sleeve;

[0024] S4: After the papermaking boot is formed, compressed gas is introduced into the vent pipe to separate the formed papermaking boot from the inner wall of the drum;

[0025] S5, after the papermaking boot is separated from the inner wall of the drum, the shaping ring is connected to the papermaking boot through the connecting mechanism;

[0026] S6. Finally, the shaping ring is connected to the papermaking boot through the connecting mechanism, and the driving mechanism is started again to repeat step S1, and the papermaking boot is moved out from the inside of the drum by driving the shaping ring to move along the length direction of the drum.

[0027] Compared with the prior art, the papermaking boot cover rotary casting molding device and molding method provided by the present invention have the following beneficial effects:

[0028] 1. By driving the drum and the driving disc to rotate in different directions, during this process, the driving shaping ring rotates and moves along the axial direction of the drum, thereby driving the sprayers on both sides of the shaping ring to move along the length direction of the drum, and evenly spraying the urethane coating on the inner wall of the drum. In the same way, the interior of the pre-woven tubular fabric sleeve can be evenly sprayed with the urethane coating, thereby effectively improving the uniformity of the spraying and casting of the pre-woven tubular fabric sleeve and ensuring the compactness of the papermaking boot sleeve;

[0029] 2. During the process of spraying the urethane coating on the inner wall of the pre-woven tubular fabric sleeve, the running track of the shaping ring is used to drive the pre-woven tubular fabric sleeve to fit tightly against the inner wall of the drum, thus ensuring the quality of the papermaking shoe sleeve after forming;

[0030] 3. Also by utilizing the running track of the shaping ring and the cooperation of various components of the drying mechanism, the coating in the pre-woven tubular fabric sleeve is evenly dried and solidified, thus avoiding the problem of uneven heating of the pre-woven tubular fabric sleeve;

[0031] 4. Also by utilizing the running track of the shaping ring and the cooperation of the various parts of the connecting mechanism, it is convenient to remove the formed papermaking shoe sleeve from the inside of the drum, thereby improving the convenience of papermaking shoe sleeve unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0033] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the internal structure of a drum provided by an embodiment of the present invention;

[0035] Figure 3 A schematic structural diagram of a drying mechanism provided in an embodiment of the present invention;

[0036] Figure 4 The embodiment of the present invention provides Figure 3 Enlarged image;

[0037] Figure 5 A schematic diagram of the structure of the cover plate and the housing in a separated state provided by an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the connection mechanism structure provided by an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 1. Base; 2. Support seat; 3. Roller; 4. Stand; 5. Pre-woven tubular fabric sleeve; 6. Shaping ring; 7. Sprayer; 8. Fixed shaft; 9. First screw; 10. Drive disc; 11. Drive rod; 12. Threaded sleeve; 13. Connecting frame; 14. First motor; 15. First gear; 16. Drive sleeve; 17. Second gear; 18. Transmission shaft; 19. Third gear; 20. Gear ring; 21. Fourth gear; 22. Ventilation pipe; 23. Sealing cover; 24. Housing; 25. Second motor; 26. Fan blade; 27. Heating wire; 28. Cover plate; 29. ​​T-bar; 30. Second screw; 31. Connecting block; 32. Connecting rod; 33. Fifth gear; 34. Polished rod; 35. Slider; 36. Spring; 37. Movable groove; 38. Electric push rod; 39. Abutment block; 40. T-slot. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Example

[0042] See also Figure 1-5 A papermaking boot cover rotary casting molding device includes a base 1, a support base 2, a drum 3, a stand 4 and a pre-woven tubular fabric cover 5. The support base 2 and the stand 4 are both mounted on the top of the base 1. The drum 3 is rotatably connected to the top of the support base 2. The device also includes a shaping ring 6, which is arranged inside the drum 3 and is used to flatten the pre-woven tubular fabric cover 5 so that it fits the inner wall of the drum 3.

[0043] A sprayer 7 is mounted on the shaping ring 6 and is used to spray a polyurethane coating on the inside of the drum 3 and the inside of the pre-woven tubular fabric cover 5, respectively. The sprayer 7 is connected to an external PLC control system;

[0044] The displacement mechanism is arranged inside the drum 3 and is used to drive the shaping ring 6 to move. The displacement mechanism includes a fixed shaft 8 fixed to the outer wall of the stand 4 along the axial direction of the drum 3, a first screw 9 fixed to one end of the fixed shaft 8, a driving disk 10 rotatably connected to one end of the drum 3 and two driving rods 11 fixed to the outer wall of the driving disk 10 close to the inner side of the drum 3. The first screw 9 is located inside the drum 3, and the driving disk 10 is sleeved on the outside of the fixed shaft 8. The two driving rods 11 are symmetrically arranged on both sides of the first screw 9 and are parallel to each other. The shaping ring 6 is slidingly sleeved on the outside of the two driving rods 11. The outside of the first screw 9 is screwed with a threaded sleeve 12, and the outside of the threaded sleeve 12 is fixedly sleeved with a connecting frame 13 fixed to the inner wall of the shaping ring 6. There are two sprayers 7, and the two sprayers 7 are symmetrically connected to the outer walls on both sides of the connecting frame 13 through the first support block. There are two drying mechanisms, and the two drying mechanisms are symmetrically connected to the outer walls on both sides of the connecting frame 13 through the second support block. The sprayer 7 and the drying mechanism are symmetrically arranged with the first screw 9 as the center. When the driving sleeve 16 rotates, the two driving rods 11 are driven by the driving disc 10 to perform orbital motion with the first screw 9 as the center. The threaded sleeve 12 is screwed to the first screw 9, thereby driving the shaping ring 6 to rotate and move along the axial direction of the drum 3, thereby driving the sprayer 7 to evenly spray the inner walls of the drum 3 and the pre-woven tubular fabric sleeve 5 during the process of rotating and moving. During drying, the driving drying mechanism is evenly dried on the inner wall of the pre-woven tubular fabric sleeve 5 during the process of rotating and moving;

[0045] The driving mechanism is installed on the stand 4 and is used to drive the displacement mechanism and the roller 3 to operate respectively. The driving mechanism includes a first motor 14 installed on the outer wall of the stand 4, a first gear 15 fixedly sleeved on the outside of the output shaft of the first motor 14, a driving sleeve 16 sleeved on the outside of the fixed shaft 8, a second gear 17 fixedly sleeved on the outside of the driving sleeve 16, a transmission shaft 18 rotatably connected to the outer wall of the stand 4, a third gear 19 fixedly sleeved on the outside of the transmission shaft 18 and a transmission assembly connected between the transmission shaft 18 and the roller 3. The driving sleeve 16 is fixedly connected to the outer wall of the driving disk 10, and the first gear 15 is respectively connected to the second gear 17. The second gear 17 is meshed with the third gear 19, and the transmission assembly includes a ring gear 20 fixedly sleeved on the outside of the drum 3 and a fourth gear 21 fixedly sleeved on the outside of the transmission shaft 18. The fourth gear 21 is meshed with the ring gear 20. By starting the first motor 14, the first gear 15 on the outside of its output shaft is driven to rotate. The first gear 15 is meshed with the second gear 17 and the third gear 19 respectively, which drives the drive sleeve 16 and the transmission shaft 18 to rotate in the same direction. The fourth gear 21 is meshed with the ring gear 20, which drives the drum 3 and the transmission shaft 18 to rotate in opposite directions, thereby causing the drum 3 and the drive sleeve 16 to rotate in opposite directions.

[0046] The drying mechanism is installed on the shaping ring 6 and is used to accelerate the forming speed of the papermaking boot. The drying mechanism includes a shell 24 installed on the second support block, a second motor 25 installed on the inner wall of the shell 24, a fan blade 26 fixedly sleeved on the outside of the output shaft of the second motor 25, a heating wire 27 installed inside the shell 24, a cover plate 28 installed at one end of the shell 24 away from the second support block, and a linkage assembly for driving the cover plate 28 to move. A T-slot 40 is opened radially at one end of the shell 24 away from the second support block, and a T-bar 29 is slidably connected to the inside of the T-slot 40. The T-bar 29 is fixed to the outer wall of the cover plate 28. The second motor 25 and the heating wire 27 are both connected to the P LC control system connection, the linkage assembly includes a second screw 30 rotatably connected to the inside of the housing 24, a connecting block 31 screwed to the outside of the second screw 30, a connecting rod 32 hinged on the outer wall of the connecting block 31, and two fifth gears 33 fixedly sleeved on the second screw 30 and the outside of the output shaft of the second motor 25, respectively. The other end of the connecting rod 32 is hinged to the outer wall of the T-bar 29, and the two fifth gears 33 are meshed with each other. A light rod 34 is fixed to one end of the second screw 30 close to the cover plate 28. The diameter of the light rod 34 is smaller than the diameter of the second screw 30. A slider 35 is slidably sleeved on the outside of the light rod 34, and a spring 36 is also sleeved on the outside of the second screw 30. The ends of the screw rod 30 away from the polished rod 34 are rotatably connected to the third support block fixed to the inner wall of the shell 24, one end of the spring 36 is fixed to the outer wall of the slider 35, and the other end of the spring 36 is fixed to the outer wall of the third support block close to the polished rod. After the pre-woven tubular fabric sleeve 5 is sprayed, the second motor 25 and the heating wire 27 are started, and the second motor 25 drives the fan blades 26 to rotate through its output shaft, thereby blowing out the heat generated by the heating wire 27. While the output shaft of the second motor 25 rotates, the second screw rod 30 is driven to rotate through the meshing effect of the two fifth gears 33, and then the connecting block 31 is driven to move toward the cover plate 28, thereby connecting The connecting rod 32 drives the T-shaped bar 29 and the cover plate 28 to move radially along the shell 24, thereby opening the mouth of the shell 24, and then blowing hot air directly to the pre-woven tubular fabric sleeve 5, so that it is cured and shaped, and dried evenly. It is worth mentioning that when the connecting block 31 moves to the polished rod 34, the spring 36 cooperates with the slider 35 to push the connecting block 31, so that the connecting block 31 and the second screw 30 are always in a semi-disconnected state, and then during the continuous rotation of the output shaft of the second motor 25, the mouth of the shell 24 is always in an open state. By controlling the second motor 25 to drive its output shaft to reverse, the connecting block 31 can be driven to reset, and then the cover plate 28 can be driven to reset;

[0047] A ventilation pipe 22 is also connected to the outer wall of the drum 3, and a detachable sealing cover 23 is installed at the other end of the drum 3. After the papermaking boot is formed, compressed gas is introduced into the inside of the drum 3 through the ventilation pipe 22 to separate the papermaking boot from the inner wall of the drum 3. When the inner wall of the drum 3 and the inner wall of the pre-woven tubular fabric cover 5 are sprayed, the sealing cover 23 is installed on the drum 3. When the papermaking boot needs to be taken out, the sealing cover 23 is removed. Example

[0048] See also Figure 2 and Figure 6 , this embodiment provides a technical solution based on the first embodiment: a papermaking boot rotary casting molding device also includes a connecting mechanism, which is installed on the shaping ring 6, and the connecting mechanism can be multiple, and the multiple connecting mechanisms are distributed in a ring array with the first screw 9 as the center, for connecting the shaping ring 6 and the pre-woven tubular fabric sleeve 5, the connecting mechanism includes a movable groove 37 opened inside the shaping ring 6, an electric push rod 38 installed on the inner wall of the movable groove 37 and an abutment block 39 installed at the extended end of the electric push rod 38, the electric push rod 38 is connected to the external PLC control system, and the abutment block 39 extends to the outside of the shaping ring 6. When the formed papermaking boot needs to be taken out from the inside of the drum 3, the electric push rod 38 is first controlled to extend, driving the abutment block 39 to move out of the outside of the movable groove 37 and abut against the papermaking boot, and then the shaping ring 6 is driven by the driving mechanism to cooperate with the displacement mechanism to move toward the sealing cover 23, so that the papermaking boot is moved out of the inside of the drum 3, thereby improving the convenience of unloading the drum 3. Example

[0049] See also Figure 1-6 A papermaking boot cover rotation casting method comprises the following steps:

[0050] S1. First, the driving mechanism is started to drive the drum 3 and the driving disc 10 to rotate in different directions. During this process, the sprayers 7 on both sides of the shaping ring 6 are driven to move along the length direction of the drum 3 to spray the urethane coating on the inner wall of the drum 3;

[0051] S2. After the spraying of the inner wall of the drum 3 is completed, the pre-woven tubular fabric cover 5 is inserted into the interior of the drum 3, and then the driving mechanism is started again to repeat step S1. By driving the sprayers 7 on both sides of the shaping ring 6 to move along the length direction of the drum 3, the inner wall of the pre-woven tubular fabric cover 5 is sprayed with a urethane coating, and at the same time, the pre-woven tubular fabric cover 5 is driven to fit tightly against the inner wall of the drum 3 to ensure the quality of the papermaking boot cover forming;

[0052] S3, after the inner wall of the pre-woven tubular fabric sleeve 5 is sprayed, the driving mechanism is started again to repeat step S1, and the drying mechanisms on both sides of the shaping ring 6 are driven to move along the length direction of the drum 3 to uniformly accelerate the curing speed of the papermaking boot;

[0053] S4, after the papermaking boot is formed, compressed gas is introduced into the vent pipe 22 to separate the formed papermaking boot from the inner wall of the drum 3, making it easier to remove the papermaking boot;

[0054] S5, after the papermaking boot is separated from the inner wall of the drum 3, the shaping ring 6 is connected to the papermaking boot through the connecting mechanism;

[0055] S6. Finally, the shaping ring 6 is connected to the papermaking boot through the connecting mechanism, and the driving mechanism is started again to repeat step S1, and the papermaking boot is moved out from the inside of the drum 3 by driving the shaping ring 6 along the length direction of the drum 3.

[0056] Working principle: When in use, the first motor 14 is started to drive the first gear 15 outside its output shaft to rotate, and the first gear 15 is respectively engaged with the second gear 17 and the third gear 19 to drive the driving sleeve 16 and the transmission shaft 18 to rotate in the same direction. The fourth gear 21 is engaged with the ring gear 20 to drive the roller 3 and the transmission shaft 18 to rotate in opposite directions, thereby making the roller 3 and the driving sleeve 16 rotate in opposite directions. When the driving sleeve 16 rotates, it drives the two driving rods 11 to perform orbital motion around the first screw 9 through the driving disc 10, and the threaded sleeve 12 is screwed with the first screw 9 to drive the entire The shaping ring 6 rotates and moves along the axial direction of the drum 3, thereby driving the sprayer 7 to evenly spray the inner wall of the drum 3 during the process of rotating and moving. After the spraying of the inner wall of the drum 3 is completed, the sealing cover 23 is removed, and the pre-woven cylindrical fabric sleeve 5 is inserted into the interior of the drum 3, and then the sealing cover 23 is installed, and the first motor 14 is started again to drive the shaping ring 6 to rotate and move along the axial direction of the drum 3, thereby driving the sprayer 7 to evenly spray the inner wall of the pre-woven cylindrical fabric sleeve 5 during the process of rotating and moving. At the same time, the shaping ring 6 drives the pre-woven cylindrical fabric sleeve 5 to rotate and move along the axial direction of the drum 3. The woven tubular fabric sleeve 5 is tightly fitted against the inner wall of the drum 3. After the inner wall of the pre-woven tubular fabric sleeve 5 is sprayed, the motor is started again to drive the shells on both sides of the shaping ring 6 to move along the length direction of the drum 3. In this process, by starting the second motor 25 and the heating wire 27, the second motor 25 drives the fan blades 26 to rotate through its output shaft, thereby blowing out the heat generated by the heating wire 27. While the output shaft of the second motor 25 is rotating, the second screw 30 is driven to rotate through the meshing effect between the two fifth gears 33, thereby driving the connecting block 31 to move toward the cover plate 28, thereby driving T through the connecting rod 32. The profile 29 and the cover plate 28 move radially along the shell 24, thereby opening the mouth of the shell 24, and then blowing hot air directly to the pre-woven tubular fabric sleeve 5, uniformly accelerating the curing speed of the papermaking boot sleeve. After the papermaking boot sleeve is formed, compressed gas is introduced into the ventilation pipe 22 to separate the formed papermaking boot sleeve from the inner wall of the drum 3. Finally, by controlling the extension of the electric push rod 38, the abutment block 39 is driven to move out of the outside of the movable groove 37 and abut against the papermaking boot sleeve, the sealing cover 23 is removed, and the first motor 14 is started again to drive the shaping ring 6 to move along the length direction of the drum 3, thereby removing the papermaking boot sleeve from the inside of the drum 3.

[0057] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A papermaking boot cover rotary casting molding device, comprising a base (1), a support base (2), a roller (3), a stand (4) and a pre-woven tubular fabric cover (5), wherein the support base (2) and the stand (4) are both mounted on the top of the base (1), and the roller (3) is rotatably connected to the top of the support base (2), characterized in that: It also includes a shaping ring (6) which is arranged inside the drum (3) and is used to flatten the pre-woven tubular fabric sleeve (5) so that it fits the inner wall of the drum (3); A sprayer (7) is mounted on the shaping ring (6) and is used to spray a polyurethane coating on the inside of the drum (3) and the inside of the pre-woven tubular fabric sleeve (5); A displacement mechanism, which is arranged inside the drum (3) and is used to drive the shaping ring (6) to move; A driving mechanism, which is mounted on the stand (4) and is used to drive the displacement mechanism and the roller (3) to operate respectively; A drying mechanism, which is mounted on the shaping ring (6) and is used to accelerate the forming speed of the papermaking boot; A connecting mechanism, which is mounted on the shaping ring (6) and is used to connect the shaping ring (6) and the pre-woven tubular fabric sleeve (5); The displacement mechanism comprises a fixed shaft (8) fixed to the outer wall of the stand (4) along the axial direction of the roller (3), a first screw (9) fixed to one end of the fixed shaft (8), a driving disc (10) rotatably connected to one end of the roller (3), and two driving rods (11) fixed to the outer wall of the driving disc (10) close to the inner side of the roller (3), wherein the first screw (9) is located inside the roller (3), the driving disc (10) is sleeved on the outside of the fixed shaft (8), the two driving rods (11) are symmetrically arranged on both sides of the first screw (9) and are both arranged parallel to the first screw (9), and the shaping ring (6) is slidably sleeved on the outside of the two driving rods (11); The outside of the first screw (9) is screwed with a threaded sleeve (12), and the outside of the threaded sleeve (12) is fixedly sleeved with a connecting frame (13) fixedly connected to the inner wall of the shaping ring (6). The number of the sprayers (7) is two, and the two sprayers (7) are symmetrically connected to the outer walls on both sides of the connecting frame (13) through the first support block. The number of the drying mechanisms is two, and the two drying mechanisms are symmetrically connected to the outer walls on both sides of the connecting frame (13) through the second support block. The sprayers (7) and the drying mechanisms are symmetrically arranged with the first screw (9) as the center. The drying mechanism comprises a housing (24) mounted on the second support block, a second motor (25) mounted on the inner wall of the housing (24), a fan blade (26) fixedly sleeved on the outside of the output shaft of the second motor (25), a heating wire (27) mounted inside the housing (24), a cover plate (28) mounted on the end of the housing (24) away from the second support block, and a linkage assembly for driving the cover plate (28) to move, wherein a T-shaped slot (40) is provided in a radial direction at the end of the housing (24) away from the second support block, a T-shaped strip (29) is slidably connected inside the T-shaped slot (40), and the T-shaped strip (29) is fixedly connected to the outer wall of the cover plate (28); The connecting mechanism comprises a movable groove (37) provided inside the shaping ring (6), an electric push rod (38) mounted on the inner wall of the movable groove (37), and an abutment block (39) mounted on the extended end of the electric push rod (38), wherein the abutment block (39) extends to the outside of the shaping ring (6).

2. A papermaking boot cover rotary casting device according to claim 1, characterized in that: The driving mechanism comprises a first motor (14) mounted on the outer wall of the stand (4), a first gear (15) fixedly sleeved on the outside of the output shaft of the first motor (14), a driving sleeve (16) sleeved on the outside of the fixed shaft (8), a second gear (17) fixedly sleeved on the outside of the driving sleeve (16), a transmission shaft (18) rotatably connected to the outer wall of the stand (4), a third gear (19) fixedly sleeved on the outside of the transmission shaft (18), and a transmission assembly connected between the transmission shaft (18) and the roller (3), wherein the driving sleeve (16) is fixedly connected to the outer wall of the driving disk (10), and the first gear (15) is respectively engaged with the second gear (17) and the third gear (19).

3. The papermaking boot cover rotary casting device according to claim 2, characterized in that: The transmission assembly comprises a ring gear (20) fixedly sleeved on the outside of the drum (3) and a fourth gear (21) fixedly sleeved on the outside of the transmission shaft (18), wherein the fourth gear (21) meshes with the ring gear (20).

4. The papermaking boot cover rotary casting device according to claim 1, characterized in that: A vent pipe (22) is also connected to the outer wall of the drum (3), and a detachable sealing cover (23) is installed at the other end of the drum (3).

5. The papermaking boot cover rotary casting device according to claim 1, characterized in that: The linkage assembly comprises a second screw (30) rotatably connected to the inside of the housing (24), a connecting block (31) screwed to the outside of the second screw (30), a connecting rod (32) hinged on the outer wall of the connecting block (31), and two fifth gears (33) fixedly sleeved on the outside of the second screw (30) and the output shaft of the second motor (25), respectively. The other end of the connecting rod (32) is hinged to the outer wall of the T-shaped bar (29), and the two fifth gears (33) are meshed with each other. The end of the second screw (30) close to the cover plate (28) A light rod (34) is fixedly connected, the diameter of the light rod (34) is smaller than the diameter of the second screw rod (30), the outside of the light rod (34) is slidably sleeved with a slider (35), the outside of the light rod (34) is also sleeved with a spring (36), the end of the second screw rod (30) away from the light rod (34) is rotatably connected to a third support block fixed to the inner wall of the shell (24), one end of the spring (36) is fixed to the outer wall of the slider (35), and the other end of the spring (36) is fixed to the outer wall of the third support block close to the side of the light rod (34).

6. A papermaking boot cover rotation casting method, which is applicable to a papermaking boot cover rotation casting device according to any one of claims 1 to 5, characterized in that: The steps include: S1. First, the driving mechanism is started to drive the roller (3) and the driving disc (10) to rotate in different directions. During this process, the sprayers (7) on both sides of the shaping ring (6) are driven to move along the length direction of the roller (3) to spray the urethane coating on the inner wall of the roller (3); S2. After the inner wall of the drum (3) is sprayed, the pre-woven tubular fabric sleeve (5) is inserted into the drum (3), and then the driving mechanism is started again to repeat step S1, and the sprayers (7) on both sides of the shaping ring (6) are driven to move along the length direction of the drum (3) to spray the inner wall of the pre-woven tubular fabric sleeve (5) with a urethane coating; S3, after the inner wall of the pre-woven tubular fabric sleeve (5) is sprayed, the driving mechanism is started again to repeat step S1, and the drying mechanisms on both sides of the shaping ring (6) are driven to move along the length direction of the drum (3), thereby uniformly accelerating the curing speed of the papermaking boot sleeve; S4, after the papermaking boot is formed, compressed gas is introduced into the vent pipe (22) to separate the formed papermaking boot from the inner wall of the drum (3); S5, after the papermaking boot is separated from the inner wall of the drum (3), the shaping ring (6) is connected to the papermaking boot through the connecting mechanism; S6. Finally, the driving mechanism is started again to repeat step S1, and the papermaking boot is moved out of the interior of the drum (3) by driving the shaping ring (6) to move along the length direction of the drum (3).

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