CN104891254A - Automatic film uncovering device for prepreg cloth - Google Patents
Automatic film uncovering device for prepreg cloth Download PDFInfo
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Abstract
The invention discloses an automatic film uncovering device for prepreg cloth, and belongs to the technical field of devices for separately overlaying strips. The automatic film uncovering device comprises an unwinding roller, a first guide roller, a second guide roller, a floating guide roller, a floating mechanism, a third guide roller, a winding roller and a rotating power original motive part, the prepreg cloth with a film is coiled on the unwinding roller, a gap is reserved between the first guide roller and the second guide roller, the film and the prepreg cloth which are overlaid can be separated through the first guide roller and the second guide roller, the prepreg cloth with the film uncovered serves as a standby, the uncovered film sequentially passes the second guide roller, the floating guide roller and the third guide roller and then is winded on the winding roller, the diameter of the winding roller with the film is enlarged along with gradual increase of the film winded on the winding roller, at the moment, tension applied to the film can be adjusted by the aid of the floating guide roller, so that the problem of non-uniform tension applied to the film can be decreased or avoided, and the possibility of pulling off the film is decreased or avoided.
Description
Technical Field
The invention relates to the technical field of devices for separating superposed strips, in particular to an automatic film uncovering device for prepreg cloth.
Background
Prepreg is a composition of a resin matrix and reinforcement made by impregnating continuous fibers or fabrics with the resin matrix under strictly controlled conditions. For example, a carbon fiber prepreg is a composite material, also called a carbon fiber prepreg, which is produced by processing a material such as carbon fiber yarn, epoxy resin, release paper, etc. through processes such as coating, hot pressing, cooling, coating, winding, etc. This is called prepreg because it is only the primary impregnation of resin and carbon fiber and the final impregnation is performed when the product is molded. The method is widely applied to the fields of fishing tackle, sports equipment, sports goods, aerospace and the like, and is used for manufacturing important military products such as rockets, missiles, satellites, radars, bullet-proof vehicles, body armor and the like in military. The carbon fiber prepreg has high strength and low density: the strength can reach 6-12 times of that of steel, and the density is only one fourth of that of the steel; the plasticity is good: the die can be made into any shape according to the shape of the die, and is easy to form and convenient to process; it also has the characteristics of corrosion resistance and long service life. In actual production, the prepreg often appears in the form of a continuous roll.
In practical application, in order to prolong the storage time of the pre-impregnated woven cloth strap and ensure the performance of the pre-impregnated cloth, the surface of the cloth strap is generally covered with a layer of protective film, in the winding process of a non-metal product or a workpiece, the protective film on the surface of the cloth strap is required to be uncovered when the pre-impregnated woven cloth strap is unreeled, 2 persons need to be arranged when winding production is carried out by winding machine equipment, 1 person is responsible for winding operation, 1 person is responsible for manual uncovering work, an operator is long-term engaged in simple and single dry work and is easy to fatigue, the film is easy to break when force is unevenly applied, the film is prevented from being wound into the product along with the cloth strap, the equipment needs to be immediately stopped for processing, the film is cleaned, and. And general unreel roller and wind-up roll all adopt columniform optical axis design, adopt the nut to compress tightly, and the charging tray is fixed not hard up easily and skids, and loading and unloading efficiency is not high.
In order to separate stacked strips, chinese patent application publication No. CN 103496610 a discloses a film peeling mechanism, when a material is transported to above the film peeling mechanism, a clamping jaw cylinder drives a clamping jaw to clamp a film below the material, and the film below the material can be peeled off by the cylinder moving forward under the guiding action of a guide rail, and the moving distance is determined by a photoelectric sensor. After the film is uncovered, the film stops above the connecting plate, after the sucking disc on the connecting plate sucks the next film, the rotating cylinder drives the connecting plate to rotate, the film is conveyed to a waste material placing position, the sucking disc loosens the film, then the film rotates to the initial position again, and the operation is repeated. Although it is possible to peel off a material film from a product, it is suitable for peeling off an intermittent product and is not suitable for separating a coating film from a continuous web such as a prepreg.
The application publication number CN 102079641 a of the present invention discloses a feeding structure for a backlight film coiled material, which comprises a raw material winding drum, a waste material winding drum, six direction-changing rollers and a film stripping component, wherein the raw material winding drum, the waste material winding drum, the six direction-changing rollers and the film stripping component are fixedly arranged on a feeding vertical plate. Wherein, the film stripping component consists of an L-shaped film stripping seat, an upper film stripping block and a lower film stripping block. A tension control component is fixedly arranged on the front side surface of the feeding vertical plate. The left end cover, the hollow cylinder and the right end cover are sequentially and fixedly connected to form a wheel pair-shaped reel, three expansion claw extending holes and T-shaped expansion claws are arranged on the cylindrical surface of the hollow cylinder at intervals of 120 degrees and equal radian, and a three-claw cylinder is arranged in the inner cavity of the hollow cylinder. The defect that the existing small-sized backlight diaphragm is easily polluted and damaged by manually uncovering the diaphragm is overcome, and the product quality is effectively improved. Although it can be used for the film stripping operation of the web, it does not relate to the force uniformity of the strip film during the film stripping process. However, in the process of uncovering the film of the continuous roll-shaped prepreg, the diameter of the winding roller with the film is continuously increased along with the fact that the uncovered film is continuously wound on the winding roller, the length of the film which can be wound by the winding roller every time the winding roller rotates one circle is also gradually increased, if the stress of the uncovered film is not timely adjusted, the result of uneven force application is caused, and the film is easily broken.
Disclosure of Invention
In view of the above, the present invention provides an automatic film uncovering device for a prepreg, and a primary object of the present invention is to provide an automatic film uncovering device for a prepreg, which can adjust the stress of a uncovered film in real time, and can ensure that the film is uniformly stressed during the film uncovering process for the prepreg, so as to be more practical.
In order to achieve the above purpose, the present invention mainly provides the following technical solutions:
the automatic film uncovering device of the prepreg cloth comprises an unwinding roller, a first guide roller, a second guide roller, a floating mechanism, a third guide roller, a winding roller and a rotary power driving part, wherein the prepreg cloth with a film is wound on the unwinding roller,
a gap is arranged between the first guide roller and the second guide roller
The prepreg cloth with the film removed passes through the first guide roller for standby;
the rotary power prime mover is used for providing rotary power for the winding roller, so that the uncovered film can be wound on the winding roller;
the uncovered film sequentially passes through a second guide roller, a floating guide roller and a third guide roller and then is coiled to the winding roller;
the floating guide roller can move up and down in the vertical direction under the limitation of the floating mechanism, the upper limit position of the floating guide roller in the horizontal direction is lower than the second guide roller and the third guide roller, the position of the floating guide roller in the vertical direction is between the second guide roller and the third guide roller, and the acting force of the floating guide roller moving up and down in the vertical direction is from the resultant force of the self gravity and the film tension;
the diameter of the winding roller with the thin film is increased along with the gradual increase of the thin film wound on the winding roller, and the circumference of the outermost circle of the rotary power driving element per rotation is also gradually increased, so that the floating guide roller floats up and down under the limit of the guide mechanism.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
Preferably, the rotary power prime mover is a rocker arm, and the rocker arm is fixedly connected to the winding roller.
Preferably, the floating mechanism comprises a slide rail and a slide block, the floating guide roller is fixedly connected to the slide block, and the slide block and the slide rail form a vertical sliding pair.
Preferably, the slide rail is a polished rod, the slider is an annular part, a through hole is formed in the center of the slider, the slider is sleeved on the polished rod through the through hole, and the floating guide roller is fixedly connected to the side wall of the slider.
Preferably, the automatic film uncovering device for the prepreg further comprises an upper limiting block and a lower limiting block, the upper limiting block is fixedly connected to the upper portion of the feed bar, the lower limiting block is fixedly connected to the lower portion of the feed bar, and the stroke of the floating guide roller is limited between the upper limiting block and the lower limiting block.
Preferably, the upper limit block and the lower limit block are both annular components, the upper limit block and the lower limit block are in interference fit with the light bar, and the outer diameters of the upper limit block and the lower limit block are larger than the inner diameter of the sliding block.
Preferably, the rotary power driving piece is a motor, a connecting line of the second guide roller and the third guide roller is in the horizontal direction, the polished rod is arranged on a vertical bisector of the connecting line of the second guide roller and the third guide roller,
the distances among the floating guide roller, the second guide roller and the third guide roller in the horizontal direction are respectively marked as L1The absolute value of the displacement of the floating guide roller relative to the reference zero point is delta X, the displacement is marked as-delta X when the floating guide roller moves upwards and is marked as delta X when the floating guide roller moves downwards, the distance between the middle position of the stroke of the floating guide roller and the second guide roller and the distance between the middle position of the stroke of the floating guide roller and the third guide roller in the vertical direction are marked as H, the length variation of the film between the second guide roller and the third guide roller are marked as delta L, and the length of the film corresponding to one turn of the winding roller is marked as L when the2The radius of the winding roller and the coiled film is recorded as R, and the required pulse number when the length of the coiled film is delta L is recorded as P2The rotating speed of the motor is recorded as n, and the number of pulses required by the motor to rotate for one circle is recorded as P1The frequency of the motor control pulse is recorded as f,
then at this point in time,
when the floating guide roller moves upwards, according to the pythagorean theorem,
when the floating guide roller moves downwards, according to the pythagorean theorem,
L2＝2πR；
due to H, L1、P1It is known that P, P can be detected by detecting delta X, R in real time2F and n are controlled, so that the stress is uniform along with the change of delta X, R in the process of coiling the film to the winding roller.
Preferably, the automatic film uncovering device for the prepreg cloth further comprises a displacement sensor and a roll diameter sensor, wherein the displacement sensor is used for measuring delta X, and the roll diameter sensor is used for measuring R.
Preferably, the automatic film uncovering device for the prepreg cloth further comprises a processor, the displacement sensor is further used for sending a delta X data signal obtained through measurement to the processor, the roll diameter sensor is further used for sending an R data signal obtained through measurement to the processor, and the processor obtains control parameters of the motor after calculation and controls the motor.
Preferably, the unwinding roller and/or the winding roller are made of an inflatable shaft.
The automatic film uncovering device of the prepreg cloth provided by the invention winds the prepreg cloth with the film on the unwinding roller, a gap is arranged between the first guide roller and the second guide roller, the film and the prepreg cloth can be separated by the first guide roller and the second guide roller, the prepreg cloth uncovered with the film is reserved after passing through the first guide roller, the uncovered film sequentially passes through the second guide roller, the floating guide roller and the third guide roller and then is wound on the winding roller, the diameter of the winding roller with the film is increased along with the gradual increase of the film wound on the winding roller, the outermost circle of the winding roller with the film per rotation also namely the length of the film which can be wound is also increased, at the moment, the length of the film between the second guide roller and the third guide roller can be changed by the floating guide roller, and the acting force of the floating guide roller moving up and down in the vertical direction comes from the resultant force of self gravity and the film pulling force, when the floating guide roller floats up and down, the tension of the film in the process of coiling the film to the coiling roller can be adjusted, so that the problem of uneven film tension caused by the gradual increase of the diameter of the coiling roller with the film can be reduced or avoided, and the possibility of the film being broken is reduced or avoided.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of an automatic film uncovering device for a prepreg according to one or two embodiments of the present invention;
FIG. 2 is a schematic structural diagram of a mathematical model analysis of an automatic film uncovering device for prepreg according to a second embodiment of the present invention;
fig. 3 is a schematic structural view of an automatic film peeling device for prepreg according to a third embodiment or a fourth embodiment of the present invention.
Detailed Description
The invention provides an automatic film uncovering device for prepreg cloth, aiming at solving the problem that the stress of a film is uneven in the process of uncovering the prepreg cloth in the prior art, and mainly aiming at providing the automatic film uncovering device for prepreg cloth, which can adjust the stress of the uncovered film in real time, and can ensure that the stress of the film is even in the process of uncovering the prepreg cloth, thereby being more practical.
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be made on the specific implementation, structure, features and effects of the automatic pre-impregnated cloth film uncovering device according to the present invention with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, with the specific understanding that: both a and B may be included, a may be present alone, or B may be present alone, and any of the three cases can be provided.
Example one
Referring to the attached drawing 1, the automatic film uncovering device for the prepreg cloth provided by the invention comprises an unwinding roller 1, a first guide roller 2, a second guide roller 3, a floating guide roller 7, a floating mechanism 30, a third guide roller 4, a winding roller 5 and a rotary power driving part (not shown in the figure), wherein the prepreg cloth 15 with a thin film is wound on the unwinding roller 1.
A gap is formed between the first guide roller 2 and the second guide roller 3, and the prepreg A with the film B removed is reserved after passing through the first guide roller 2.
A rotary power driving unit (not shown) is used to provide rotary power to the wind-up roll 5 so that the peeled film B can be wound on the wind-up roll 5.
The peeled film B passes through the second guide roll 3, the floating guide roll 7, and the third guide roll 4 in this order, and is wound around a wind-up roll 5 (reference numeral 16 denotes a wind-up roll with a film).
The floating guide roller 7 can move up and down in the vertical direction under the restriction of the floating mechanism 30, the upper limit position of the floating guide roller 7 in the horizontal direction is lower than the second guide roller 3 and the third guide roller 4, the position of the floating guide roller 7 in the vertical direction is between the second guide roller 3 and the third guide roller 4, and the acting force of the floating guide roller 7 moving up and down in the vertical direction is from the resultant force of the self gravity and the pulling force of the film B.
As the film wound on the wind-up roller 5 is gradually increased, the diameter of the wind-up roller 16 with the film is increased, and the circumference of the outermost turn per one rotation of the rotary power driving element (not shown in the figure) is gradually increased, so that the floating guide roller 7 floats up and down under the restriction of the guide mechanism 30.
The automatic film uncovering device of the prepreg cloth provided by the invention winds the prepreg cloth 15 with a film on an unwinding roller 1, a gap is arranged between a first guide roller 2 and a second guide roller 3, two superposed strips of the film B and the prepreg cloth A can be separated through the first guide roller 2 and the second guide roller 3, the prepreg cloth A uncovered with the film B is reserved after passing through the first guide roller 2, the uncovered film B sequentially passes through the second guide roller 3, a floating guide roller 7 and a third guide roller 4 and then is wound on a winding roller 5, the diameter of the winding roller 16 with the film is increased along with the gradual increase of the film B wound on the winding roller 5, the circumference of the outermost circle of each rotation of the winding roller 16 with the film is also the length of the film B which can be wound, at the moment, the length of the film between the second guide roller 3 and the third guide roller 4 can be changed through the floating guide roller 7, because the acting force of the vertical movement of the floating guide roller 7 comes from the resultant force of the self gravity and the pulling force of the film B, when the floating guide roller 7 floats up and down, the pulling force of the film B in the process of coiling to the coiling roller 5 can be adjusted, so that the problem of uneven pulling force of the film B caused by the gradual increase of the diameter of the coiling roller 16 with the film can be reduced or avoided, and the possibility of breaking the film B is reduced or avoided.
In this embodiment, the rotary power driving element (not shown in the figure) is a rocker arm, the rocker arm is fixedly connected to the take-up roll 5, in this case, an operator needs to keep beside the rocker arm and feel the stress condition of the removed film B in real time, and meanwhile, the size of the acting force applied to the rocker arm is changed according to the diameters of the floating guide roll 7 and the take-up roll 16 with the film, so that the problem of uneven tension of the film B caused by the gradual increase of the diameter of the take-up roll 16 with the film is further reduced or avoided, and the possibility that the film B is broken is reduced or avoided.
The floating mechanism 30 comprises a slide rail 8 and a slide block 9, the floating guide roller 7 is fixedly connected to the slide block 9, and the slide block 9 and the slide rail 8 form a vertical sliding pair. In this case, due to the limitation of the floating mechanism 30, the floating guide roller 7 can only move up and down along the slide rail 8 in the vertical direction, and the difficulty in controlling the floating guide roller 7 due to the excessive degree of freedom is avoided.
In this embodiment, the slide rail 8 is a polished rod, the slide block 9 is an annular component, a through hole is formed in the center of the annular component, the slide block 9 is sleeved on the polished rod through the through hole, and the floating guide roller 7 is fixedly connected to the side wall of the slide block 9. In order to make the matching relationship between the sliding block 9 and the sliding block 8 more stable, the sliding block 9 comprises an inner ring and an outer ring, the outer ring and the inner ring are fixed together through a fixing block 10, and the floating guide roller 7 is fixedly connected to the outer ring, so that the influence on a sliding pair between the sliding block 9 and the sliding rail 8 due to the introduction of the floating guide roller 7 is avoided.
The automatic film uncovering device for the prepreg cloth further comprises an upper limiting block 13 and a lower limiting block 14, the upper limiting block 13 is fixedly connected to the upper portion of the light bar, the lower limiting block 14 is fixedly connected to the lower portion of the light bar, and the stroke of the floating guide roller 7 is limited between the upper limiting block 13 and the lower limiting block 14. In this case, the slider 9 can be prevented from being separated from the slide rail 8 from the upper or lower portion due to an excessive stroke.
The upper limiting block 13 and the lower limiting block 14 are both annular components, and the upper limiting block 13 and the lower limiting block 14 are in interference fit with the light bar, so that the upper limiting block 13 and the lower limiting block 14 are in tight fit with the light bar. The outer diameters of the upper limiting block 13 and the lower limiting block 14 are larger than the inner diameter of the sliding block 9, and at the moment, when the sliding block 9 moves upwards to abut against the upper limiting block 13 or moves downwards to abut against the lower limiting block 14, the sliding block can be blocked by the upper limiting block 13 or the lower limiting block 14 and cannot be separated from the sliding rail 8. Go up spacing piece 13 and spacing piece 14 down except that through interference fit and slide rail 8 cooperation, can also with slide rail 8 integrated into one piece, at this moment, can guarantee more that spacing piece 13 and spacing piece 14 can't break away from slide rail 8 down.
The automatic film uncovering device for the prepreg cloth provided by the embodiment of the invention has the defect that the judgment error is large because the rotating speed is adjusted by an operator through self feeling and visual observation of the diameters of the floating guide roller 7 and the take-up roller 16 with the film for controlling the rocker arm (not shown in the figure).
Example two
Referring to fig. 1 and 2, wherein fig. 2 is obtained by neglecting the shape error of the second guide roller 3 and the third guide roller 4, in practice, the shapes of the second guide roller 3 and the third guide roller 4 can be considered for obtaining more accurate calculation, but since the stress limit of the film B itself has a certain range, it is not necessary to make 100% accuracy. The difference from the automatic film removing device for the prepreg cloth according to the first embodiment of the present invention is that, in the automatic film removing device for the prepreg cloth according to the second embodiment of the present invention, the rotary power driving member is a motor (not shown), the connecting line of the second guide roller 3 and the third guide roller 4 is in the horizontal direction, and the optical bar is disposed on the perpendicular bisector of the connecting line of the second guide roller 3 and the third guide roller 4 (in practice, the optical bar may not be disposed on the perpendicular bisector of the connecting line of the second guide roller 3 and the third guide roller 4, and at this time, the amount of change of the film B on both sides of the optical bar needs to be calculated according to the pythagorean theorem, and in this embodiment, in order to make the calculation simpler and more convenient, the optical bar is disposed on the perpendicular bisector of the second guide roller 3 and the first accommodating guide roller 4).
The horizontal distances between the floating guide roller 7 and the second and third guide rollers 3 and 4 are denoted by L1In the present embodiment, the absolute value of the displacement of the floating guide roller relative to the reference zero point (in the present embodiment, the middle position 7a of the stroke of the floating guide roller 7 is referred to as the reference zero point, and the reference zero point may be set elsewhere, and has only a reference value, but has no calculated meaning), is Δ X, when the roller moves up, is Δ X, when the roller moves down, the distance between the middle position of the stroke of the floating guide roller and the second guide roller 3 and the third guide roller 4 in the vertical direction is referred to as H, the variation of the film length between the second guide roller 3 and the third guide roller 4 is referred to as Δ L, and when the wind-up roller 5 winds up one turn, the corresponding film length is referred to as2The radius of the wind-up roll 5 and the coiled film is recorded as R, and the required pulse number when the length of the coiled film is delta L is recorded as P2The number of the pulses required for one rotation of the motor is recorded as nIs denoted by P1The frequency of the motor control pulse is recorded as f,
then at this point in time,
when the floating guide roll moves up to 7b, Δ L becomes 2(La-Lb), according to the pythagorean theorem,
when the floating guide roll moves down to 7c, Δ L is 2 × (Lc-La), according to the pythagorean theorem,
L2＝2πR；
due to H, L1、P1It is known that P, P can be detected by detecting delta X, R in real time2F and n are controlled, so that the stress is uniform along with the change of delta X, R in the process of coiling the film B to the winding roller.
In this embodiment, owing to select for use the motor to provide rotary power for wind-up roll 5, need not operating personnel and watch on beside the wind-up roll, but drive wind-up roll 5 by the motor and rotate, can save manpower resources.
The automatic film uncovering device for the prepreg cloth provided by the embodiment of the invention has the disadvantages that the real-time detection of the delta X, R is realized by manual measurement, the calculation process also needs manual calculation, the measurement and calculation intensity is high, and the synchronization of data measurement and calculation and the operation of a motor is difficult to realize.
EXAMPLE III
Referring to fig. 3, the automatic film uncovering device for prepreg according to the second embodiment of the present invention is improved, and the automatic film uncovering device for prepreg according to the third embodiment of the present invention further includes a displacement sensor 12 (which needs to collect displacement data by means of a displacement detection block 11) and a roll diameter sensor 6, wherein the displacement sensor 12 is used for measuring Δ X (up to- Δ X and down to Δ X) with the aid of the displacement detection block 11, and the roll diameter sensor 6 is used for measuring R. The automatic film uncovering device for the prepreg cloth provided by the third embodiment of the invention does not need manual measurement, and an operator can control a motor (not shown in the figure) only according to the measurement results of the displacement sensor 12 and the roll diameter sensor 6, so that the operation synchronization of data measurement and calculation and the operation synchronization of the motor are better than that of the automatic film uncovering device for the prepreg cloth provided by the second embodiment of the invention.
In the embodiment, the displacement sensor 12 is a commercially available finished product, the detection distance is 20mm, the detected displacement signal is converted and output into an analog voltage output by 0-10V, the displacement detection block 11 is a metal strip, the metal strip is fixed on the sliding block 9 through the fixed block 10 at a certain angle alpha, the distance between the detection surface and the displacement sensor 12 changes along with the vertical movement of the sliding block 9, the displacement sensor 12 detects the vertical position of the floating guide roller 7 through the change of the detection distance, the installation position of the displacement sensor 12 is aligned with the sliding rail 8 and the middle position 7a of the displacement detection block 11, the position 7a is defined as a zero reference position, namely the balance position of the floating guide roller 7, the displacement detection block 11 is also fixed on the sliding block 9 through the fixed block 10 and keeps a certain included angle alpha with the sliding rail 8, and the displacement sensor 12 is perpendicular to the detection surface of the displacement detection, when the displacement detection block 11 moves up and down along with the floating guide roller 7, the displacement is in direct proportion to the voltage signal output by the displacement sensor 12, and the change displacement of the floating roller 7 is obtained by collecting the voltage signal output by the displacement sensor 12, wherein the upward movement is-delta X, and the downward movement is delta X.
In this embodiment, the roll diameter sensor 6 is an ultrasonic sensor, is a commercially available finished product, and outputs a voltage signal of 0 to 10V.
Example four
Referring to fig. 3, the automatic film uncovering device for the prepreg according to the third embodiment of the present invention is improved, and the automatic film uncovering device for the prepreg according to the fourth embodiment of the present invention further includes a processor (not shown in the figure), the displacement sensor 12 is further configured to send Δ X (up- Δ X and down- Δ X) data signals obtained by measurement to the processor (not shown in the figure), the roll diameter sensor 6 is further configured to send R data signals obtained by measurement to the processor (not shown in the figure), and the processor (not shown in the figure) obtains control parameters of the motor after being calculated by the mathematical model provided in the second embodiment, and controls the motor. In this embodiment, a processor (not shown) adopts a PID algorithm to calculate various parameters in the automatic film uncovering device for the prepreg according to the second embodiment of the present invention.
In this case, the displacement sensor 12 and the displacement detection block 11 are used for collecting displacement Δ X (upward movement is- Δ X, downward movement is Δ X) of the floating guide roller 7 in a matching manner, the displacement sensor 11 also sends displacement Δ X (upward movement is- Δ X, downward movement is Δ X) data to a processor (not shown in the figure), the winding diameter sensor 6 is used for collecting winding diameter R of the winding roller 16 with the film, and the winding diameter sensor 6 can also send the detected winding diameter R data of the winding roller with the film to the processor. Because the calculation speed of the processor far exceeds the speed of manual calculation, the response time of the processor can be almost ignored, and therefore the measurement, calculation and operation can be synchronously carried out in real time. The problem of uneven tension of the film B caused by the gradual increase of the diameter of the winding roller 16 with the film is more accurately reduced or avoided, and the possibility that the film B is broken is more accurately reduced or avoided.
The automatic film uncovering device for the prepreg cloth further comprises a motor driver and a power amplifier, wherein the motor driver is a commercially available finished product and drives the motor according to an instruction received from the processor, so that the motor can change in real time. The power amplifier is used to drive a torque controller (in this embodiment, a magnetic particle clutch).
In addition, in the automatic film uncovering device for the prepreg cloth according to any one of the first to fourth embodiments of the present invention, the unwinding roller 15 and/or the winding roller are made of an inflatable shaft.
The air expansion shaft is a special rolling and expanding shaft, an air expansion roller, an air inflation shaft, a pressure shaft and the like. The inflatable shaft and the inflatable sleeve are very convenient to use. The method is characterized by mainly comprising the following steps:
1) the inflation operation time is short: the separation and the placement of the inflatable shaft and the paper tube can complete inflation and deflation in only 3 seconds, and the inflatable shaft can be tightly meshed with the paper tube without disassembling any part on the end side of the shaft.
2) The paper tube is placed simply: the paper tube can be moved and fixed at any position on the axial surface by the action of inflation and deflation.
3) The bearing weight is large: the size of the shaft diameter can be determined according to actual requirements, and high-hardness steel is used, so that the bearing weight of the high-hardness steel is increased.
4) The economic efficiency is high: the shaft is designed to have special functions and can be applied to various paper tubes with thickness, thinness, width and narrowness.
5) Simple maintenance and long service time: although the air shaft is a mechanical accessory, each part in the self structure has a fixed specification and can be used interchangeably, so that the air shaft is convenient to maintain.
The inflatable shaft applied to the automatic membrane uncovering device of the prepreg cloth provided in any one of the first embodiment to the fourth embodiment of the invention is selected from one of a metal inflatable key inflatable shaft, an inflatable button type inflatable key and a non-metal inflatable key. Wherein,
metal expansion key physiosis axle: the expansion mode of pneumatic type or mechanical type is selected, and the metal expansion key air expansion shaft can be used for manufacturing and processing application of most products. The steel zigzag expansion key can prevent slippage during high acceleration and deceleration coiling and can minimize vibration during high-speed operation.
The button type expansion key: the winding device has the advantages of comprehensive functions, low cost and high winding performance in various application occasions, and the tensioning element of the winding device is in the shape of a round button and is popular in the market.
Non-metal bond swelling: these lightweight inflatable axles are an economical option for use in light load and standard load applications. The non-metallic key ballooning shaft uses a molded rubber key as a tensioning element.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An automatic film uncovering device for prepreg cloth is characterized by comprising an unwinding roller, a first guide roller, a second guide roller, a floating mechanism, a third guide roller, a winding roller and a rotary power driving part, wherein the prepreg cloth with a film is wound on the unwinding roller,
a gap is arranged between the first guide roller and the second guide roller
The prepreg cloth with the film removed passes through the first guide roller for standby;
the rotary power prime mover is used for providing rotary power for the winding roller, so that the uncovered film can be wound on the winding roller;
the uncovered film sequentially passes through a second guide roller, a floating guide roller and a third guide roller and then is coiled to the winding roller;
the floating guide roller can move up and down in the vertical direction under the limitation of the floating mechanism, the upper limit position of the floating guide roller in the horizontal direction is lower than the second guide roller and the third guide roller, the position of the floating guide roller in the vertical direction is between the second guide roller and the third guide roller, and the acting force of the floating guide roller moving up and down in the vertical direction is from the resultant force of the self gravity and the film tension;
the diameter of the winding roller with the thin film is increased along with the gradual increase of the thin film wound on the winding roller, and the circumference of the outermost circle of the rotary power driving element per rotation is also gradually increased, so that the floating guide roller floats up and down under the limit of the guide mechanism.
2. The automatic film uncovering device for the prepreg cloth according to claim 1, wherein the rotary power driving element is a rocker arm, and the rocker arm is fixedly connected to the winding roller.
3. The automatic film uncovering device for the prepreg cloth according to claim 1, wherein the floating mechanism comprises a slide rail and a slide block, the floating guide roller is fixedly connected to the slide block, and the slide block and the slide rail form a vertical sliding pair.
4. The automatic film uncovering device for the prepreg cloth according to claim 3, wherein the slide rail is a polish rod, the slide block is an annular component, a through hole is formed in the center of the annular component, the slide block is sleeved on the polish rod through the through hole, and the floating guide roller is fixedly connected to the side wall of the slide block.
5. The automatic film uncovering device for the prepreg according to claim 4, characterized by further comprising an upper limiting block and a lower limiting block, wherein the upper limiting block is fixedly connected to the upper portion of the feed bar, the lower limiting block is fixedly connected to the lower portion of the feed bar, and the stroke of the floating guide roller is limited between the upper limiting block and the lower limiting block.
6. The automatic film uncovering device for the prepreg cloth according to claim 5, wherein the upper limiting block and the lower limiting block are both annular components, the upper limiting block and the lower limiting block are in interference fit with the light bar, and the outer diameter of the upper limiting block and the outer diameter of the lower limiting block are larger than the inner diameter of the sliding block.
7. The automatic film uncovering device of the prepreg cloth according to the claim 5, characterized in that the rotary power driving element is a motor, the connecting line of the second guide roller and the third guide roller is in the horizontal direction, the optical lever is arranged on the vertical bisector of the connecting line of the second guide roller and the third guide roller,
the distances among the floating guide roller, the second guide roller and the third guide roller in the horizontal direction are respectively marked as L1The absolute value of the displacement of the floating guide roller relative to the reference zero point is delta X, the displacement is marked as-delta X when the floating guide roller moves upwards and is marked as delta X when the floating guide roller moves downwards, the distance between the middle position of the stroke of the floating guide roller and the second guide roller and the distance between the middle position of the stroke of the floating guide roller and the third guide roller in the vertical direction are marked as H, the length variation of the film between the second guide roller and the third guide roller are marked as delta L, and the length of the film corresponding to one turn of the winding roller is marked as L when the2The radius of the winding roller and the coiled film is recorded as R, and the required pulse number when the length of the coiled film is delta L is recorded as P2The rotating speed of the motor is recorded as n, and the number of pulses required by the motor to rotate for one circle is recorded as P1The frequency of the motor control pulse is recorded as f,
then at this point in time,
when the floating guide roller moves upwards, according to the pythagorean theorem,
when the floating guide roller moves downwards, according to the pythagorean theorem,
L2＝2πR；
due to H, L1、P1It is known that P, P can be detected by detecting delta X, R in real time2F and n are controlled, so that the stress is uniform along with the change of delta X, R in the process of coiling the film to the winding roller.
8. The automatic film uncovering device of the prepreg cloth according to the claim 7, characterized by further comprising a displacement sensor and a roll diameter sensor, wherein the displacement sensor is used for measuring Δ X, and the roll diameter sensor is used for measuring R.
9. The automatic film uncovering device of the prepreg cloth according to claim 8, characterized by further comprising a processor, wherein the displacement sensor is further used for sending a measured delta X data signal to the processor, the roll diameter sensor is further used for sending a measured R data signal to the processor, and the processor obtains a control parameter of the motor after calculation to control the motor.
10. The automatic film uncovering device of the prepreg cloth according to the claim 1, characterized in that the unreeling roller and/or the reeling roller are made of air-inflated shafts.
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| CN105922727A (en) * | 2016-06-20 | 2016-09-07 | 安庆市鑫顺塑业有限公司 | Printing machine |
| CN106079871A (en) * | 2016-06-20 | 2016-11-09 | 安庆市鑫顺塑业有限公司 | A kind of Novel decorating machine |
| CN106688737A (en) * | 2016-11-15 | 2017-05-24 | 贵州省烟草公司遵义市公司 | Film uncovering machine for recovering mulching film and control method thereof |
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