A zero-stiffness and gap-adjustable pair of roller extrusion devices

Abstract

The application discloses a kind of zero stiffness and gap adjustable pair of roller extrusion devices, including upper rubber roller assembly, lower roller assembly, lifting module and installation fixed component, installation fixed component is installation base, lifting module is installed in the right side above installation fixed component, lower roller assembly is installed in the left side above installation fixed component, upper rubber roller assembly is installed in the just above lower roller assembly, and is connected with the lifting module of one side, is controlled lifting by lifting module.The device of the application realizes the zero stiffness gravity compensation of upper rubber roller and its components;Realize the high-precision adjustable gap between upper and lower pair of rollers, the precision is 0.01mm, the adjustment range is 0~6.5mm;Realize the micro-positive pressure (<10kPa) constant pressure extrusion;Realize the unilateral lifting of upper rubber roller and its components and other functions.The device is simple to operate, can be applied in the explosion-proof workshop of tow preparation, can effectively control the thickness fluctuation of tow when entering crimping machine, improves the quality of tow crimping.

Description

Technical Field

[0001] This invention relates to the field of ultra-thin filament production equipment technology, and more specifically, to a zero-rigidity and adjustable gap roller extrusion device. Background Technology

[0002] Fiber acetate tow possesses advantages such as being non-toxic, odorless, impact-resistant, oil-resistant, static-free, having low absorption resistance, and strong adsorption capacity. It is commonly used as a raw material in cigarette filter production and adheres to high quality standards. The tow production process includes multiple steps such as pulping, yarn doubling, humidification, crimping, yarn arrangement, and packaging. When the tow enters the crimping process, its thickness must be uniform; typically, rollers or counter-rollers are used to perform compression to ensure the quality of the crimped tow.

[0003] Most existing technologies cannot adjust the gap size between rollers with high precision. When using the pressure of the diaphragm valve as the extrusion pressure, the pressure of the gluing roller, bearing, bearing seat and locking screw may be much greater than the required pressure. The fixed pressure roller structure on both sides requires multiple attempts when drawing yarn at high speed.

[0004] Therefore, under the current circumstances, it is essential to provide a roller extrusion device specifically designed to address the thickness fluctuation problem of the filament bundle before it enters the crimping machine. Summary of the Invention

[0005] In view of this, the present invention proposes a zero-stiffness and adjustable gap double-roller extrusion device, the specific technical solution of which is as follows:

[0006] A zero-rigidity and gap-adjustable roller extrusion device includes an upper roller assembly, a lower roller assembly, a lifting module, and a mounting and fixing assembly. The mounting and fixing assembly serves as a mounting base. The lifting module is mounted on the upper right side of the mounting and fixing assembly. The lower roller assembly is mounted on the upper left side of the mounting and fixing assembly. The upper roller assembly is mounted directly above the lower roller assembly and connected to the lifting module on one side, with its lifting and lowering controlled by the lifting module.

[0007] The glue-applying roller assembly includes left and right glue-applying rollers. Each of the left and right ends of the glue-applying roller is connected to a first angular contact bearing. Each first angular contact bearing is installed in a first bearing seat. A first bearing end cap is installed at the end of the first bearing seat away from the glue-applying roller. First support beams are arranged parallel to each other on the front and rear sides of the glue-applying roller. The outer end faces of two first support beams near the lifting module are connected to the lifting module. The first support beam consists of first bracket ends located on the left and right sides and a first crossbeam connecting the two first bracket ends. The front and rear sides of the first bearing seat correspond to one first bracket end. The upper part of the first bearing seat is provided with a first upper pressure plate connected to the upper surfaces of the two first bracket ends, and the lower part is provided with a first lower pressure plate connected to the lower surfaces of the two first bracket ends. The two first bracket ends, the first upper pressure plate, and the first lower pressure plate form a quadrilateral frame. The bottom of the first bearing seat contacts the upper surface of the first lower pressure plate, and the... The top roller is tangent to the lower surface of the first lower pressure plate; a first groove is provided on the side of the first support end near the first bearing seat, and the corresponding end of the first bearing seat extends into the first groove and can slide up and down along the first groove; steps are provided on the front and rear sides of the upper part of the first bearing seat, and flexible spring sheets are installed on the steps. The end of the flexible spring sheet away from the first bearing seat extends into a pressure block, and the pressure block is fixedly connected to the first upper pressure plate above. A pressure block receiving groove is also provided in the first groove, and the end of the pressure block away from the flexible spring sheet extends into the pressure block receiving groove; a diaphragm valve is installed on the upper part of the first upper pressure plate, and the valve core of the diaphragm valve passes downward through the first upper pressure plate and contacts the upper end face of the first bearing seat; a first threaded through hole in the vertical direction is provided on the side of the first support end away from the first bearing seat, and a manual locking screw is inserted into the first threaded through hole; the manual locking screw can be screwed downward into the lower roller assembly to lock the top roller assembly and the lower roller assembly.

[0008] Preferably, the lower roller assembly includes left and right lower rollers, each with a second angular contact bearing connected to its left and right ends. Each second angular contact bearing is installed in a second bearing housing, and a second bearing end cap is installed at the end of the second bearing housing away from the lower roller. A second support beam is arranged parallel to the front and rear sides of the lower roller. The second support beam consists of second support ends located on the left and right sides and a second crossbeam connecting the two second support ends. The lower surface of the second support end is connected to the mounting and fixing assembly at the bottom. A second support end corresponds to the front and rear sides of the second bearing housing. A second upper pressure plate is provided on the upper part of the second bearing housing, connecting to the upper surfaces of the two first support ends. The top of the second bearing housing contacts the lower surface of the second upper pressure plate, and the lower roller contacts the lower upper pressure plate. The upper surfaces of the plates are tangent; a second groove is provided on the side of the second bracket end near the second bearing seat, and the corresponding end of the second bearing seat extends into the second groove and can slide up and down along the second groove; a second threaded through hole is provided on the side of the second bracket end away from the second bearing seat, which is in the vertical direction and corresponds to the position of the first threaded through hole, and the manual locking screw can be inserted into the second threaded through hole and tightened to lock it; a third threaded through hole is provided on the second bracket end, and a spacing adjustment screw is inserted into the third threaded through hole, and the spacing adjustment screw can fix the relative position of the second bearing seat and the second support beam after being tightened; the mounting and fixing assembly includes a base plate, and a spacing adjustment micro head is fixed on the base plate, and the spacing adjustment micro head is in contact with the lower end face of the second bearing seat.

[0009] Preferably, the adjustment accuracy of the spacing adjustment micrometer head is 0.01mm, and the adjustment range is 0~6.5mm.

[0010] Preferably, the outer end faces of the two first support beams on the side away from the lifting module are connected to a first dust cover, and the outer end faces of the two second support beams on the side away from the lifting module are connected to a second dust cover.

[0011] Preferably, the lifting module includes a handwheel, a ball screw, a guide rail, and a slider. The handwheel is fixedly installed on the top of the ball screw, and a screw nut is adapted to be installed on the ball screw. The slider is fixedly connected to the screw nut. The guide rail is located on the side close to the upper glue roller assembly. The slider is slidably connected to the guide rail and performs reciprocating linear motion in the up and down direction. The slider is fixedly connected to the two first support beams on the upper glue roller assembly through an adapter plate.

[0012] Preferably, the lifting module further includes a locking device to restrict the free rotation of the ball screw, a mechanical limiting device to limit the travel of the slider, and a sliding position height indicator scale, wherein the actual maximum travel of the slider is 100mm.

[0013] Preferably, a mounting bracket is installed on the side of the lifting module away from the top roller assembly to ensure its strength.

[0014] Preferably, the lower roller assembly and the lifting module are respectively installed on the left and right sides of the upper surface of the base plate; a level column is vertically connected to each side of the lower surface of the base plate in the front-back direction, and a water collection box is inserted between the two level columns. The width of the water collection box in the left-right direction is the same as the length of the upper roller and the lower roller, and the length of the long side of the water collection box in the front-back direction is greater than the maximum vertical distance between the two level columns; a connecting plate is connected to the bottom of the two level columns, and the connecting plate is then fixed to the external platform.

[0015] Preferably, a reinforcing frame is fixed at the front and rear positions of the side of the connecting plate near the lifting module, and the top of the reinforcing frame is fixedly connected to the lower surface of the base plate.

[0016] Preferably, the flexible spring sheet is a flexible multilayer spring sheet, and the maximum range of upward micro-movement of the flexible spring sheet is 0.5mm.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] To address the issue of thickness fluctuation in the filament bundle before it enters the winding machine, this invention employs several solutions: First, a double-sided flexible spring mechanism compensates for the combined gravity of the top roller and its accessories, ensuring the extrusion pressure is precisely the micro-positive pressure of the diaphragm valve. Second, by utilizing a double-sided vertically adjustable bearing seat design, the position of the micrometer head on the micrometer head can be adjusted by adjusting the spacing, achieving an accuracy of 0.01mm for the upper and lower roller gap within a range of 0-6.5mm. Third, the flexible spring plate design of the top roller allows for slight vertical movement of the first bearing seat, compensating for excessive positive pressure caused by an overly thick filament bundle and ensuring the quality of the filament bundle. Fourth, by connecting the lifting module to the top roller assembly, the top roller can be adjusted vertically on one side during operation, enabling smooth filament drawing and subsequent closing of the pressure roller during high-speed production, thus improving filament drawing efficiency.

[0019] By adopting the above-mentioned technical solution, the present invention can adaptively adjust the appropriate flexible roller structure within a certain range, and the rollers are pressed firmly to form a fixed pressure and resistance on the passing filament bundle, which can stabilize the thickness fluctuation of the filament bundle when it enters the crimping machine and improve the crimping quality of the filament bundle. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is an isometric view of a zero-stiffness and adjustable gap roller extrusion device according to the present invention.

[0022] Figure 2 This is a top view of a zero-rigidity and gap-adjustable roller extrusion device according to the present invention.

[0023] Figure 3 for Figure 1 Cross-sectional view along the AA direction.

[0024] Figure 4 This is a partial sectional view of the left side of a zero-rigidity and adjustable-gap roller extrusion device according to the present invention.

[0025] Figure 5 This is a right view of a zero-rigidity and gap-adjustable roller extrusion device according to the present invention.

[0026] Figure 6 This is a cross-sectional view of the bearing center in the upper rubber roller assembly of the present invention.

[0027] Figure 7 , 8 This is an isometric view of the first beam frame in this invention.

[0028] Figure 9 , 10 This is an isometric view of the second beam frame in this invention.

[0029] In the diagram: 1-Upper roller, 2-First angular contact bearing, 3-First bearing housing, 4-First bearing end cap, 5-First support beam, 6-First bracket end, 7-First crossbeam, 8-First upper pressure plate, 9-First lower pressure plate, 10-First slide groove, 11-Flexible spring sheet, 12-Pressure block, 13-Pressure block receiving groove, 14-Diaphragm valve, 15-First threaded through hole, 16-Manual locking screw, 17-Lower roller, 18-Second angular contact bearing, 19-Second bearing housing, 20-Second bearing end cap, 21-Second support beam, 22- Second bracket end, 23-Second crossbeam, 24-Second upper pressure plate, 25-Second slide groove, 26-Second threaded through hole, 27-Third threaded through hole, 28-Pitch adjustment tightening screw, 29-Pitch adjustment micro head, 30-Clip, 31-First dust cover, 32-Second dust cover, 33-Handwheel, 34-Ball screw, 35-Guide rail, 36-Slider, 37-Adapter plate, 38-Mounting bracket, 39-Base plate, 40-Equal height column, 41-Water receiving box, 42-Connecting plate, 43-Reinforcing frame, 44-Elastic element. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Example

[0033] like Figures 1-10As shown, this invention discloses a zero-stiffness, adjustable-gap roller extrusion device, mainly comprising an upper roller assembly, a lower roller assembly, a lifting module, and a mounting and fixing assembly. This invention achieves zero-stiffness gravity compensation for the upper roller and its components; achieves high-precision adjustable gap between the upper and lower rollers (accuracy 0.01mm, adjustment range 0~6.5mm); achieves constant pressure extrusion under micro-positive pressure (<10kPa); and achieves unilateral lifting of the upper roller and its components. This device is simple to operate and can be applied in explosion-proof workshops for filament preparation, effectively controlling thickness fluctuations when the filament enters the winding machine and improving the quality of filament winding.

[0034] Specifically,

[0035] In this invention, the mounting and fixing assembly serves as the mounting base. The lifting module is installed on the upper right side of the mounting and fixing assembly, the lower roller assembly is installed on the upper left side of the mounting and fixing assembly, and the upper rubber roller assembly is installed directly above the lower roller assembly and connected to the lifting module on one side. The lifting module controls the unilateral lifting.

[0036] Furthermore, the mounting and fixing components include a base plate 39, with the lower roller assembly and lifting module respectively mounted on the left and right sides of the upper surface of the base plate 39; a level column 40 is vertically connected to each side of the lower surface of the base plate 39 in the front-back direction, and a water collection box 41 is inserted between the two level columns 40. The width of the water collection box 41 in the left-right direction is the same as the length of the upper roller 1 and the lower roller 17, so as to collect all the sewage falling from the rollers. The length of the long side of the water collection box 41 in the front-back direction is greater than the maximum vertical distance between the two level columns 40, so as to facilitate the insertion and removal of the water collection box 41; a connecting plate 42 is connected to the bottom of the two level columns 40, and the connecting plate 42 is then fixed to the external platform.

[0037] Meanwhile, a reinforcing frame 43 is fixed at both the front and rear positions on the side of the connecting plate 42 near the lifting module, and the top of the reinforcing frame 43 is fixedly connected to the lower surface of the base plate 39. The reinforcing frame 43 further enhances the strength of the mounting and fixing components.

[0038] The gluing roller assembly includes gluing rollers 1 arranged on the left and right sides. Each end of the gluing roller 1 is connected to a first angular contact bearing 2. Each first angular contact bearing 2 is installed in a first bearing seat 3. The end of the first bearing seat 3 furthest from the gluing roller 1 is pressed against by a first bearing end cap 4. First support beams 5 are arranged parallel to each other on the front and rear sides of the gluing roller 1. The outer end faces of the two first support beams 5 near the lifting module are connected to the lifting module. The first support beam 5 consists of first bracket ends 6 located on the left and right sides and a first crossbeam 7 connecting the two first bracket ends 6. The front and rear sides of the first bearing seat 3 correspond to a first bracket end 6 respectively. The upper part of the first bearing seat 3 is provided with a first upper pressure plate 8 connected to the upper surfaces of the two first bracket ends 6, and the lower part is provided with a first lower pressure plate 9 connected to the lower surfaces of the two first bracket ends 6. The two first bracket ends 6, the first upper pressure plate 8, and the first lower pressure plate 9 form a quadrilateral frame. The bottom of the first bearing seat 3 contacts the upper surface of the first lower pressure plate 9, and the gluing roller 1 and the first lower pressure plate 9 are in contact. The lower surface of the pressure plate 9 is tangent to the first bearing seat 3; a first groove 10 is provided on the side of the first support end 6 near the first bearing seat 3, and the corresponding end of the first bearing seat 3 extends into the first groove 10 and can slide up and down along the first groove 10; steps are provided on the front and rear sides of the upper part of the first bearing seat 3, and a flexible spring sheet 11 is installed and fixed on the steps. The end of the flexible spring sheet 11 away from the first bearing seat 3 extends into a pressure block 12, and the pressure block 12 is fixedly connected to the first upper pressure plate 8 located above it. A pressure block receiving groove 13 is also provided in the first groove. The end of the pressure block 12 away from the flexible spring sheet 11 extends into the pressure block receiving groove 13; a diaphragm valve 14 is installed on the upper part of the first upper pressure plate 8, and the valve core of the diaphragm valve 14 passes downward through the first upper pressure plate 8 and contacts the upper end face of the first bearing seat 3; a first threaded through hole 15 in the vertical direction is opened on the side of the first bracket end 6 away from the first bearing seat 3, and a manual locking screw 16 is inserted into the first threaded through hole 15; the manual locking screw 16 can be screwed downward into the lower roller assembly to lock the upper rubber roller assembly and the lower roller assembly.

[0039] The flexible spring sheet 11 used in the upper rubber roller assembly of the present invention is a flexible multilayer spring sheet, and the specific number of layers is determined by theoretical calculation.

[0040] The first support beam 5 in the front-rear direction of the upper rubber roller 1 constrains the horizontal and rotational movement of the first bearing seat 3, so that the first bearing seat 3 can only slide in the first slide groove 10 of the first support beam 5 along the direction of gravity. The combined gravity of the upper rubber roller 1, the first angular contact bearing 2 and the first bearing seat 3 is balanced by the slight bending of the flexible spring sheet 11. By adjusting the position of the pressure block 12, the upper rubber roller 1 is made tangent to the lower surface of the first lower pressure plate 9, so as to achieve zero stiffness gravity compensation of the upper rubber roller 1 and balance the gravity of the upper roller assembly.

[0041] More specifically, this invention addresses the thickness fluctuation problem of the filament before it enters the winding machine by setting a flexible spring mechanism on the first bearing seat 3 to compensate for the combined gravity of the top roller and its components, thus determining the extrusion pressure as the micro-positive pressure of the diaphragm valve 14. To further explain, after the gravity of the top roller and its components is compensated, the contact positive pressure of the upper and lower contact surfaces of the filament is provided by the double-sided diaphragm valve 14, and the micro-positive pressure is set according to the process requirements. This pressure is generally <10kPa.

[0042] When the thickness of the filament bundle is much greater than the gap between the upper and lower rollers 17, if the position of the gluing roller 1 remains unchanged, the micro-positive pressure constant pressure cannot be achieved, and the quality of the filament bundle decreases, resulting in indentations. In this invention, the valve core of the diaphragm valve 14 contacts the upper end face of the first bearing seat 3. When the filament bundle thickness affects the extrusion pressure to a level greater than the set micro-positive pressure, the flexible spring sheet 11 bends and deforms, moving vertically upward slightly to compensate for the excessive positive pressure caused by the excessive thickness of the filament bundle, i.e., to compensate for the excess positive pressure and ensure the quality of the filament bundle. The maximum range of upward slight movement of the flexible spring sheet 11 is 0.5 mm. At this time, the valve core of the diaphragm valve 14 rises, and the gluing roller and its components are still in a state of gravity compensation balance, realizing constant pressure and overpressure protection during the micro-positive pressure extrusion process.

[0043] To further optimize the technical solution of this embodiment, the manual locking screw 16 is a half-threaded screw with threads on the lower half. An elastic element 44 can be further sleeved on the manual locking screw 16. The bottom of the elastic element 44 is fixedly connected to the inner step above the threaded area of ​​the lower part of the first threaded through hole 15. The upper part of the elastic element 44 is tightly pressed against the step at the smooth section of the manual locking screw 16. The elastic element 44 can ensure that the manual locking screw 16 remains in a high position after it is completely screwed out from the first threaded through hole 15, and is not affected by the weight of the manual locking screw 16 itself.

[0044] The lower roller assembly includes left and right lower rollers 17, each with a second angular contact bearing 18 connected to its left and right ends. Each second angular contact bearing 18 is installed in a second bearing seat 19. The end of the second bearing seat 19 away from the lower roller 17 is pressed against by a second bearing end cap 20. A second support beam 21 is arranged parallel to the front and rear sides of the lower roller 17. The second support beam 21 consists of second support ends 22 located on the left and right sides and a second crossbeam 23 connecting the two second support ends 22. The lower surface of the second support ends 22 is connected to the bottom mounting and fixing assembly. A second support end 22 corresponds to the front and rear sides of the second bearing seat 19. A second upper pressure plate 24, connected to the upper surfaces of the two first support ends 6, is provided on the upper part of the second bearing seat 19. The top of the second bearing seat 19 contacts the lower surface of the second upper pressure plate 24, and the lower roller 17 is tangent to the upper surface of the second upper pressure plate 24. A second bearing end 22 is provided on the side near the second bearing seat 19. The corresponding end of the second bearing seat 19 extends into the second slide groove 25 and can slide up and down along the second slide groove 25; the second support end 22 is provided with a second threaded through hole 26 in the vertical direction and corresponding to the position of the first threaded through hole 15 on the side away from the second bearing seat 19; the manual locking screw 16 can be inserted into the second threaded through hole 26 and tightened to lock the first support beam 5 and the second support beam 21; the second support end 22 is provided with a third threaded through hole 27 in the front-back direction; the spacing adjustment screw 28 is inserted into the third threaded through hole 27; after the spacing adjustment screw 28 is tightened, the relative positions of the second bearing seat 19 and the second support beam 21 can be fixed. In the device of the present invention, only one of the second support beams 21 is equipped with a spacing adjustment screw 28, that is, the lower roller assembly is equipped with two spacing adjustment screws 28; a spacing adjustment micro head 29 is fixed on the bottom plate 39 with a clip 30, and the spacing adjustment micro head 29 is in contact with the lower end face of the second bearing seat 19.

[0045] The second support beam 21 in the front and rear directions of the lower roller 17 constrains the horizontal and rotational movement of the second bearing seat 19. The second bearing seat 19 can only slide in the second slide groove 25 of the second support beam 21 along the direction of gravity. When the upper end of the second bearing seat 19 contacts the second upper pressure plate 24, the lower roller 17 is tangent to the upper surface of the upper pressure plate at this position, and the upper and lower rollers are just in a tangent relationship with a gap of 0mm between them.

[0046] Furthermore, when the center-gap adjustment screw 28 of the lower roller assembly is not locked, the second bearing seat 19 can move up and down in the second slide groove 25 of the second support beam 21, and the lower end face of the second bearing seat 19 contacts the gap adjustment micrometer head 29. Before leaving the factory, the device of the present invention needs to be adjusted so that the upper rubber roller 1 is tangent to the lower surface of the first lower pressure plate 9, the lower roller 17 is tangent to the upper surface of the second upper pressure plate 24, the gap between the upper rubber roller 1 and the lower roller 17 is 0mm, and the center-gap adjustment screw 28 of the lower roller assembly is tightened to lock the second bearing seat 19 and the second support beam 21. At this time, the reading of the gap adjustment micrometer head 29 is 0. Thus, when the gap adjustment screw 28 is loosened, the reading of the gap adjustment micrometer head 29 is the gap size between the upper and lower rollers 17, realizing high-precision adjustment of the gap between the rollers.

[0047] In the device of the present invention, the adjustment accuracy of the spacing adjustment micrometer head 29 is 0.01mm, and the adjustment range is 0~6.5mm.

[0048] The bearings used in the upper and lower roller assemblies of this invention are all angular contact bearings, which can ensure the accuracy requirements of the device.

[0049] To further optimize the technical solution of this embodiment, the device of the present invention connects a first dust cover plate 31 to the outer end face of the two first support beams 5 on the side away from the lifting module, and connects a second dust cover plate 32 to the outer end face of the two second support beams 21 on the side away from the lifting module.

[0050] The lifting module of this invention includes a handwheel 33, a ball screw 34, a guide rail 35, and a slider 36. The handwheel 33 is fixedly installed on the top of the ball screw 34, and a screw nut is fitted onto the ball screw 34. The slider 36 is fixedly connected to the screw nut. The guide rail 35 is located near the upper rubber roller assembly, and the slider 36 is slidably connected to the guide rail 35, performing reciprocating linear motion in the up-down direction. The slider 36 is fixedly connected to two first support beams 5 on the upper rubber roller assembly via an adapter plate 37. Figure 2 As shown, the adapter plate 37 fixed on the slider 36 is connected to the first support beam 5 by the bolt indicated at point B. The lifting module in this invention uses a ball screw 34 in conjunction with a guide rail 35 and a slider 36. The overall unilateral rise and fall of the glue roller assembly is achieved by manually rotating the handwheel 33 clockwise and counterclockwise. The actual maximum stroke of the slider in the lifting module is 100mm.

[0051] To further optimize the technical solution of this embodiment, the lifting module also includes a locking device to restrict the free rotation of the ball screw 34, a mechanical limiting device to restrict the movement stroke of the slider 36, and a sliding position height indicator scale.

[0052] To further optimize the technical solution of this embodiment, a mounting bracket 38 is installed on the side of the lifting module away from the top roller assembly to ensure its strength.

[0053] The process of using this invention is as follows:

[0054] Roller gap adjustment:

[0055] 1) Check that the spacing adjustment screw 28 is in the locked state; check that the readings of the spacing adjustment micrometer head 29 on both sides are consistent; 2) Rotate the spacing adjustment screw 28 counterclockwise; rotate the spacing adjustment micrometer head 29 on both sides at the same time, and the adjustment values ​​on both sides are consistent. The gap width dimension = the micrometer head reading.

[0056] Relaxation / Ascent Operation:

[0057] 1) Check that the lifting module is in the relaxed state. If it is not relaxed, manually unlock the locking device. 2) Open the four manual locking screws 16 and rotate them counterclockwise until the threads are completely separated. Due to the influence of the elastic element 44, the manual locking screws 16 are in the high position. 3) Rotate the handwheel 33 of the lifting module counterclockwise. The upper roller 1 will rise as a whole. The maximum lifting stroke is 100mm. The mechanical limit device limits the movement. The lifting module rises 5mm with one rotation of the handwheel 33. The sliding position height indicator is on the side of the lifting module. 4) Adjust the height of the upper roller 1 as needed. The lifting should be at a uniform speed. When reaching the maximum position, the speed should be reduced to avoid impact. 5) After adjustment, the lifting module should be locked to prevent slippage.

[0058] Descending / closing operation:

[0059] 1) Check that the lifting module is in the relaxed state. If it is not relaxed, manually unlock the locking device; 2) Rotate the handwheel 33 of the lifting module clockwise. The upper roller 1 moves downward as a whole. When it reaches the contact surface of the lower roller 17, it should be pressed down at a low speed and evenly to avoid forceful impact and prevent the roller from being squeezed and deformed; 3) Press down the four manual locking screws 16 slightly while rotating them clockwise. If they cannot be rotated, the first beam frame 5 and the second beam frame 21 are locked; 4) After adjustment, the lifting module can be slightly locked.

[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0061] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A zero-stiffness and gap-adjustable roll-pressing device, characterized by, Including the upper roller assembly, the lower roller assembly, the lifting module and the installation fixed assembly, the installation fixed assembly is the installation base, the lifting module is installed above the right side of the installation fixed assembly, the lower roller assembly is installed above the left side of the installation fixed assembly, the upper roller assembly is installed above the lower roller assembly, and is connected with the lifting module on one side, and the lifting module is controlled to lift up and down by the lifting module; The upper roller assembly includes left and right arranged upper rollers, and each of the left and right ends of the upper roller is connected with a first angular contact bearing, each first angular contact bearing is installed in a first bearing seat, and a first bearing end cover is installed at the end of the first bearing seat away from the upper roller; The front and rear sides of the upper roller are provided with first beam frames in parallel, and the outer end surfaces of the two first beam frames close to the lifting module are connected with the lifting module; The first beam frame is composed of first support ends located on the left and right sides and a first cross beam connected between the two first support ends, the front and rear sides of the first bearing seat correspond to the first support end respectively, the upper part of the first bearing seat is provided with a first upper pressing plate connected with the upper surfaces of the two first support ends, and the lower part is provided with a first lower pressing plate connected with the lower surfaces of the two first support ends, and the two first support ends, the first upper pressing plate and the first lower pressing plate form a quadrilateral frame; The bottom of the first bearing seat is in contact with the upper surface of the first lower pressing plate, and the upper roller is tangent to the lower surface of the first lower pressing plate; A first sliding groove is formed on the side of the first support end close to the first bearing seat, and the corresponding end of the first bearing seat extends into the first sliding groove and can slide up and down along the first sliding groove; The front and rear sides of the upper part of the first bearing seat are provided with steps, flexible spring sheets are installed on the steps, one end of the flexible spring sheet away from the first bearing seat extends into a pressing block, the pressing block is fixedly connected with the first upper pressing plate above, a pressing block containing groove is formed in the first sliding groove, and one end of the pressing block away from the flexible spring sheet extends into the pressing block containing groove; A diaphragm valve is installed on the upper part of the first upper pressing plate, the valve core of the diaphragm valve penetrates downward through the first upper pressing plate and is in contact with the upper end surface of the first bearing seat; A first threaded hole in the upward and downward direction is formed in the side of the first support end away from the first bearing seat, and a hand tightening screw is correspondingly penetrated into the first threaded hole; The hand tightening screw can be screwed downward into the lower roller assembly to lock the upper roller assembly and the lower roller assembly.

2. A zero stiffness and gap adjustable roll press device as claimed in claim 1, wherein, The lower roller assembly comprises left and right lower rollers, each of which is connected with a second angular contact bearing at its left and right ends, each of the second angular contact bearings is installed in a second bearing seat, and a second bearing end cover is installed at the end of the second bearing seat away from the lower roller; second beam frames are arranged in parallel on the front and back sides of the lower roller, each of the second beam frames is composed of a second bracket end on the left and right sides and a second cross beam connected between the two second bracket ends, the lower surface of the second bracket end is connected with the mounting and fixing assembly on the bottom; the front and back sides of the second bearing seat correspond to a second bracket end respectively, the upper part of the second bearing seat is provided with a second upper pressing plate which is connected with the upper surfaces of the two first bracket ends, the top of the second bearing seat is in contact with the lower surface of the second upper pressing plate, and the lower roller is tangent to the upper surface of the second upper pressing plate; a second sliding groove is formed on the side of the second bracket end close to the second bearing seat, the corresponding end of the second bearing seat extends into the second sliding groove and can slide up and down along the second sliding groove; a second threaded through hole is formed on the side of the second bracket end away from the second bearing seat in the up-down direction and corresponds to the position of the first threaded through hole, the manual locking screw can extend into the second threaded through hole and be tightened and locked; a third threaded through hole is formed on the second bracket end in the front-back direction, a spacing adjustment and fastening screw is correspondingly inserted into the third threaded through hole, and the spacing adjustment and fastening screw can fix the relative positions of the second bearing seat and the second beam frame after being tightened; the mounting and fixing assembly comprises a bottom plate, and a spacing adjustment differential head is fixed on the bottom plate and in contact with the lower end surface of the second bearing seat.

3. A zero-stiffness and gap-adjustable pair of roller press device according to claim 2, wherein, The adjustment accuracy of the spacing adjustment differential head is 0.01 mm, and the adjustment range is 0-6.5 mm.

4. A zero-stiffness and gap-adjustable pair of roller press device according to claim 2, wherein, The outer end surfaces of the two first beam frames away from the lifting die assembly are jointly connected with a first dust cover plate, and the outer end surfaces of the two second beam frames away from the lifting die assembly are jointly connected with a second dust cover plate.

5. A zero-stiffness and gap-adjustable pair of roller press device according to claim 1, wherein, The lifting die assembly comprises a hand wheel, a ball screw, a guide rail and a sliding block, the hand wheel is fixedly installed on the top of the ball screw, a screw nut is adaptively installed on the ball screw, the sliding block is fixedly connected with the screw nut, the guide rail is located on the side close to the upper roller assembly, the sliding block is slidingly connected with the guide rail and moves reciprocatingly in the up-down direction, and the sliding block is fixedly connected with the two first beam frames of the upper roller assembly through a connecting plate.

6. A zero-stiffness and gap-adjustable pair of roller press device according to claim 5, wherein, The lifting die assembly further comprises a locking device for limiting the random rotation of the ball screw, a mechanical limiting device for limiting the movement stroke of the sliding block, and a sliding position height indicating scale, and the maximum stroke of the sliding block is 100 mm.

7. A zero-stiffness and gap-adjustable pair of roller press device according to claim 5, wherein, An installation bracket is installed on the side of the lifting die assembly away from the upper roller assembly to ensure the strength thereof.

8. A zero-stiffness, gap-adjustable pair of roller press device according to any one of claims 2-4, characterized in that, The lower roller assembly and the lifting mold group are respectively installed on the left and right sides of the upper surface of the bottom plate; the lower surface of the bottom plate is vertically connected with two equal-height columns on the front and back sides, and a water receiving box is inserted between the two equal-height columns; the width of the water receiving box in the left-right direction is the same as the length of the upper rubber roller and the lower roller, and the length of the water receiving box in the front-back direction is greater than the maximum vertical distance between the two equal-height columns; the bottom of the two equal-height columns is connected with a connecting plate, and the connecting plate is fixed with an external platform.

9. A zero-stiffness and gap-adjustable pair of roller press device according to claim 8, wherein, A reinforcing frame is fixed on the front and back positions of one side of the connecting plate close to the lifting mold group, and the top of the reinforcing frame is fixed with the lower surface of the bottom plate.

10. A zero-stiffness and gap-adjustable pair of roller press device according to claim 1, wherein, The flexible spring sheet is a flexible multi-layer spring sheet, and the maximum range of the upward micro-motion of the flexible spring sheet is 0.5 mm.

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