CN113152022B - Paper-making meshes heat design cutting banding device - Google Patents
Paper-making meshes heat design cutting banding device Download PDFInfo
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- CN113152022B CN113152022B CN202110270605.2A CN202110270605A CN113152022B CN 113152022 B CN113152022 B CN 113152022B CN 202110270605 A CN202110270605 A CN 202110270605A CN 113152022 B CN113152022 B CN 113152022B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C25/00—Treating selvedges or other edges, e.g. stiffening
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
- D06H7/02—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials transversely
Abstract
The invention discloses a heating, shaping and cutting edge sealing device for a papermaking mesh, which comprises two parallel rollers, a tension mechanism and a heating and shaping device, wherein an upper air box and a lower air box are respectively arranged at the upper side and the lower side of the central part of a closed outer frame of the heating and shaping device, a heating device arranged in the upper air box can continuously heat an air source, hot air enters the lower air box from the upper air box through the papermaking mesh and then forms a continuous circulating air path through a fan, and a controller controls and changes the tension degree between a retardation wheel set and a tension wheel set according to the thickness change of the papermaking mesh before and after passing through a hot air area of the heating and shaping device so as to control the tension and deformation of the section of the papermaking mesh after heating and carry out trimming and hot-pressing edge sealing treatment on an edge protruding part.
Description
Technical Field
The invention belongs to the technical field of auxiliary accessories for papermaking mesh production, and particularly relates to a papermaking mesh heating, shaping, cutting and edge sealing technology.
Background
The wire is a fitting on the paper machine, where it is the most important medium for forming and dewatering the paper web, plays a key role in the quality of the paper, and is a consumable device used in the paper-making industry.
The wire-mesh material includes a woven fabric of metal wires and non-metal wires, such as copper wires, stainless steel wires, polyester monofilaments, nylon wires, and the like. The non-metal wire paper-making meshes are common, good in wear resistance, convenient to use, low in cost, convenient to replace, easy to clean and long in service time, and comprise a surface layer and a bottom layer, wherein the surface layer tissue is woven by warps and wefts of polyester monofilaments, and the bottom layer tissue is woven by wefts of the polyester monofilament warps and wefts of the polyester monofilaments and nylon monofilaments which are arranged alternately. The wear-resisting property of the papermaking net can be improved by weaving the papermaking net by using the polyester monofilaments and the nylon monofilaments in the bottom layer tissue, but the internal stress of the papermaking forming net is often inconsistent due to the fact that the monofilaments have large diameter difference, thermoplastic difference and thermal shrinkage difference, so that the structure of the papermaking forming net is unstable, the net surface flatness is poor, and even the net surface is curled, and the papermaking forming net can be used on a paper machine only through stretching and shaping post-treatment. Two ends of the paper-making net to be shaped are sewed into a ring shape along the warp direction, the ring shape is sleeved on two parallel rollers of the shaping machine and rotates at a constant speed along with the rollers, so that the paper-making net continuously passes through a hot air heating area of the shaping machine, the paper-making net can be ensured to be fully and uniformly heated in the heating area, and the tensile rate and the retraction rate of the paper-making net need to be controlled in the process.
The papermaking net shaping equipment mainly comprises a papermaking net, a roller, an upper air box, a lower air box and a tension mechanism. In the paper-making meshes design process, when heating the paper-making meshes, the paper-making meshes can produce the reaction of expending with heat and contracting with cold, because the paper-making meshes of suit on some cylinders are heated and expanded, the paper-making meshes can not follow the rotatory heat of motorized roller and move when motorized roller rotates, the paper-making meshes can receive the damage because the long-time heating in same position this moment, after web length reaches certain length, because the dead weight of dictyosome can lead to the web tenesmus, cause the web to easily arch up, thereby influence the design quality of paper-making meshes, through increasing tension to one of them cylinder, or increase tension in addition and roll, improve the paper-making meshes tension of encircleing the operation gradually. For example, CN 210177270U discloses a "supporting device for sizing a paper-making net", which comprises a base plate, the top end of the base plate is connected with a cloth receiving slot, a movable seat is embedded in the inner cavity of the base plate, a fastening bolt penetrates through the inner cavity of the movable seat, a first support column on the right side is connected with a cloth conveying frame which is obliquely arranged through a connecting plate, cloth conveying rollers are uniformly arranged on the cloth conveying frame, two second movable support rollers which are vertically symmetrical are arranged on a second cloth guide frame, a pushing mechanism is sleeved on a screw rod in a threaded manner, the right end of the screw rod is connected with a driving motor on the right side wall of the second cloth guide frame, and the scheme forms a ladder-shaped support structure through the combination of the rollers and the rollers, so that a good support effect is achieved, meanwhile, the distance between the support rollers can be adjusted according to the length of a web, the tension of the web and the paper-making net is maintained, and the quality of sizing of the paper-making net is improved.
The existing tension type paper-making net setting machine has the problems, such as a heat setting post-treatment method of a high-speed wide three-layer paper-making net with the publication number of CN 102242476A, the technology of circle-by-circle quantitative temperature rise and circle-by-circle quantitative temperature fall is adopted, and corresponding tension is applied, so that the internal stress generated in the weaving process of the paper-making net can be effectively eliminated under a certain temperature condition, the imperfect structure formed in the processing of the paper-making net is repaired and improved, and the structural stability of the paper-making net is improved. However, the papermaking section located between the upper air box and the lower air box is heated, and the stretching ratio of the warp yarn after heating becomes larger, but the stretching ratio of the warp yarn located in the papermaking section in the non-heating area is not changed or slightly changed (the papermaking section containing residual heat after being output from the upper air box and the lower air box has slight stretching ratio change), and when the tension of the whole endless papermaking net is kept constant only by the tension mechanism of the setting machine, the heated section has larger stretching ratio change relative to the rest section due to the larger local stretching ratio, so that the problem of inconsistent overall stretching ratio of the papermaking net is easily caused. In addition, in the process of completing the setting only by the tension mechanism, the temperature of the paper-making net needs to be gradually increased circle by circle in the operation process of the paper-making net, the paper-making net needs to repeatedly rotate for a plurality of circles (generally 12-20 circles or more) between rollers at two ends, and the integral rotating speed is slow, so that the setting efficiency is low.
Disclosure of Invention
Aiming at the problems that the integral stretching rate and the retraction rate of the paper-making meshes are inconsistent and the setting efficiency is low commonly existing in the existing tension type paper-making mesh setting machine, the invention provides a device with an independent traction setting function and an edge sealing cutting function.
The scheme adopted by the invention for solving the technical problem is as follows: a heating, shaping, cutting and edge sealing device for paper-making net is composed of two parallel rollers, tension mechanism, heating and shaping unit, a closed external frame with upper and lower air boxes, a heating unit in said external frame for continuously heating the air source, a front and lower air box for forming a continuous circulation air path, front and lower wind boxes, a rear and tension detecting chamber, a front and a rear axle set, a tension control unit for controlling the thickness of front and rear axle sets, and a tension control unit for controlling the thickness of front and rear axle sets.
The tension mechanism is characterized in that a tension mechanism is arranged on one roller, or a tension wheel set is additionally arranged between the two rollers, the tension wheel set is adopted, an installation seat is arranged on a shaping frame, an electric push rod of the tension mechanism is sleeved in the installation seat, a pressure sensor is sleeved between the inner end of the tension mechanism and the installation seat and is connected with a signal input end of a controller, a telescopic end at the outer end of the tension wheel set is fixedly connected with a wheel frame, a tension wheel is arranged in the wheel frame, a paper-making net is sleeved on the outer side of the tension wheel, the pressure sensor displays a rated pressure value, namely the tension degree of the tension roller is gradually increased along with the temperature rise, and the controller is used for uniformly managing so that the temperature and the tension are uniformly quantized.
The controller changes the thermal energy control of the heating device according to the temperature change signal fed back by the temperature sensor by installing the temperature sensor at a responding position in the upper wind box or the lower wind box and transmitting the signal to the signal input end of the controller so as to detect the temperature condition of the paper making net.
The output end of the controller controls the power supply of the heating device to be started and stopped by controlling the relay coil.
The retarding wheel set and the tension wheel set respectively comprise a pair of pinch rollers positioned on the upper side and the lower side of the papermaking mesh, an independent pushing component is installed on a shaft bracket of one of each pair of pinch rollers and is controlled by a controller, the tension wheel set provides moderate clamping force and also provides driving rotating power, and a stepping motor used for driving the wheel to rotate is installed on the shaft bracket of one of the tension wheels.
The retarding wheel set is formed by adding an electromagnetic damping device between a wheel or a shaft and a shaft bracket and is controlled by a controller, or the retarding wheel set can be formed by the same structure as the tension wheel set, and a stepping motor of the retarding wheel set is controlled by the controller.
The side thickness device comprises an optical thickness gauge or a thickness detection device with a thickness detection reference shaft.
And a pressure roller is additionally arranged between the outlet of the hot air circulation area and the outlet walking roller for shaping the papermaking net in a heating and tension state.
The front detection chamber is provided with a deviation correcting device, and the rear detection chamber is provided with a laser leveling probe and a shearing device. The laser leveling probe transmits a signal to the controller, the controller starts the shearing device to work according to the feedback of the laser leveling probe, and the shearing device does not work directly under the normal condition so as to prevent the shearing device from interfering the sizing process of the paper-making net. The deviation correcting device provides a leveling basis for the laser leveling probe, otherwise, the paper-making net can be damaged by blind shearing due to the fact that the laser leveling probe on one side fails to detect due to the integral deflection of the paper-making net.
The shearing device comprises two pairs of shearing rollers positioned at two sides of the paper-making net, the edges of the shearing rollers comprise blades and are respectively positioned at the upper side and the lower side of the paper-making net, the blades of each pair of shearing rollers correspond to each other or are staggered to form a shearing relation, each pair of shearing rollers are respectively provided with a transverse moving driving mechanism and are controlled by a controller to realize horizontal transverse moving, and the controller controls the transverse moving driving mechanisms according to a paper-making net edge detection signal provided by a laser leveling probe so that the transverse moving of the corresponding pair of shearing rollers corresponds to the edges of the paper-making net.
The invention has the beneficial effects that: the tension mechanism has independent traction and sizing functions, so that the tension degree of the papermaking net section positioned in the heating area is independent of other non-heating papermaking net sections, the original tension mechanism only provides constant tension for the whole papermaking net to keep the tension self-sustaining, the papermaking net section in the heating area can be controllably tensioned according to the thickness detection part and the edge detection part to change the stretching rate and the retraction rate of the papermaking net section while being heated, and trimming and hot-pressing edge sealing treatment are carried out on the protruding part of the edge.
Has the tension self-sustaining function, namely, the tension degree of the tension roller is gradually increased along with the temperature rise. The temperature and the tension are quantized and are uniformly managed by the controller. Some examples are walking rollers, hot air circulation zones, pinch rollers (non-heated) and trimmer rollers (heated) from front to back in the heating zone. The walking roller is a pair of thickness detection rollers and is used for detecting the thickness of the papermaking mesh so as to ensure whether the compression degree of the compression roller is increased in the subsequent shaping process. And the inlet and the outlet of the hot air circulation area are respectively provided with a walking roller for detecting the thickness of the papermaking mesh, the inlet walking roller is used for detecting the thickness of the inlet papermaking mesh, and the outlet walking roller is used for detecting the thickness of the papermaking mesh output after regulation and control. A pressure roller can be additionally arranged between the outlet of the hot air circulation area and the outlet walking roller for shaping the papermaking net under the heating and tension states.
The deviation correcting device for sensing the edge transmission deviation of the paper-making net is suitable for the automatic adapter edge caused by the change of the retraction rate of the heating section of the paper-making net so as to limit the trend of the paper-making net.
The laser leveling instrument is arranged at a proper position of the root of the upper walking stick and the lower walking stick and is used for monitoring the burr degree of the edge of the paper-making net so as to determine whether the trimming knife roller is started to participate in trimming or not, and the trimming knife roller only participates in trimming when necessary so as to reduce the problem that the interference of the trimming knife roller possibly causes the whole thickness change of the paper-making net as much as possible.
Drawings
FIG. 1 is a schematic diagram of the application state of the device of the present invention.
FIG. 2 is a view showing the internal structure of the heat setting apparatus of the present invention.
Fig. 3 isbase:Sub>A sectional view ofbase:Sub>A-base:Sub>A in fig. 2.
FIG. 4 is a side view of a deviation rectification apparatus that can be assembled with FIG. 2.
Fig. 5 is a sectional view of B-B in fig. 4.
Fig. 6 is an enlarged view of the portion C in fig. 5.
FIG. 7 is a control schematic block diagram of one embodiment.
Figure 8 is a diagram of the tensioner pulley set control logic.
Fig. 9 is a diagram of tension pulley set control logic.
FIG. 10 is a diagram of the control logic of the deviation rectifying device.
FIG. 11 is a shear roller control logic diagram.
Fig. 12 is a block diagram of a shearing device capable of being assembled with fig. 2.
FIG. 13 is a control schematic block diagram of another embodiment.
Fig. 14 is a structural view of the heating apparatus.
The reference numbers in the figures: 1-external frame, 2-upper air box, 3-lower air box, 4-heating coil, 5-radiator, 6-front detection chamber, 7-rear detection chamber, 8-front thickness measuring device, 9-rear thickness measuring device, 10-retardation wheel set, 11-tension wheel set, 12-deviation correcting device, 13-laser leveling probe, 14-shearing device, 15-paper making net, 16-air inlet pipeline, 17-exhaust pipeline, 18-fan box, 19-roller, 20-tension mechanism electric push rod, 21-telescopic end, 22-wheel carrier, 23-tension wheel, 24-pressure sensor, 25-shunt cover, 26-diversion hole, 27-filtration net and 28-stepping motor.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the drawings.
Example 1: as shown in fig. 1, the setting machine not only includes two parallel rollers 19, but also includes a tensioning wheel set, and the two ends of the paper-making net to be set along the warp direction are aligned and sewed into a ring shape, and then sleeved on the two parallel rollers and the tensioning wheel of the setting machine, so that the paper-making net rotates at a constant speed along with the rollers. The paper-making meshes heating and shaping device is used for heating the single-belt area of the annular paper-making meshes, so that the paper-making meshes continuously pass through the heating and shaping device area of the shaping machine, and the paper-making meshes can be fully and uniformly heated and shaped in the heating and shaping device area.
The tension wheel set is as shown in fig. 1, a mounting seat is arranged on a shaping frame, a tension mechanism electric push rod 20 is sleeved in the mounting seat, a pressure sensor is sleeved between the inner end of the tension mechanism electric push rod and the mounting seat, the pressure sensor is connected with a signal input end of a controller, a telescopic end 21 at the outer end of the tension mechanism electric push rod is fixedly connected with a wheel frame 22, a tension wheel 23 is arranged in the wheel frame 22, and after a papermaking net is sleeved on the outer side of the tension wheel 23, a pressure sensor 24 displays a rated pressure value. Thus, the device has a tension self-sustaining function, i.e., the tension of the tension roller is gradually increased as the temperature rises. The temperature and the tension are quantized and are uniformly managed by the controller.
The logical relationship of the process is shown in fig. 8, because the temperature of the hot air provided by the heat setting device increases step by step as the number of rotation turns of the paper making net increases, and the cold pressure F1 and the hot pressure F2 in the figure refer to the values of the pressure sensors at the relative temperature between two adjacent turns. Without the tension control, the cold pressure F1 will be greater than the hot pressure F2, but the pressure sensor can detect that the electric push rod 20 is controlled by the controller to increase the pressure on the tension wheel 23 when F2 is less than F1 until the value displayed by the pressure sensor remains unchanged.
The above process shows the basic tensioning function of the device, adjusting the spacing between the support rolls according to the length of the web, maintaining the tension of the web and wire as a whole. However, when the tension of the whole annular papermaking net is kept constant only by the tension mechanism of the setting machine, the heated section of the papermaking net positioned in the heating and setting device has larger tension change relative to other sections due to the factors of higher local temperature and larger tension change, so that the problem of inconsistent integral tension of the papermaking net is caused. For this purpose, a heat setting apparatus of the present invention as shown in fig. 2 and 3 is introduced.
As can be seen from fig. 2, the heat setting device comprises a closed outer frame 1, the inner cavity of which is divided into a plurality of independent functional areas by a plurality of partition plates. The closed outer frame may take the form of an assembled structure as shown in fig. 3 or some other structure that allows it to be used in combination with a wire setter and that allows the single belt portion of the wire to pass longitudinally through the middle of its outer frame.
As can be seen from fig. 2, the upper side and the lower side of the central portion of the closed outer frame are respectively an upper air box and a lower air box, the upper air box introduces an air source, the lower air box discharges hot air, a heating device in the upper air box can continuously heat the air source, and the hot air enters the lower air box 3 from the upper air box 2 through the paper-making mesh 15 and then passes through a fan (in the fan box 18) to form a continuous circulation air path. During which the section of the wire is heated to a set temperature. The temperature sensor is arranged at a response position in the upper air box or the lower air box, and a signal is transmitted to the signal input end of the controller to detect the temperature condition of the papermaking net, and the controller changes the heat energy control of the heating device according to a temperature change signal fed back by the temperature sensor (the output end of the controller controls the power supply of the heating device to be started and stopped by controlling the relay coil).
The functional area and the tension control area are arranged on both sides of the upper and lower air boxes in sequence, specifically, the front detection chamber 6 and the retardation area are arranged on the front side (inlet side) of the upper and lower air boxes in sequence, and the rear detection chamber 7 and the tension area are arranged on the rear side (outlet side) of the upper and lower air boxes in sequence. At least a front thickness measuring device 8 is arranged in the front detection chamber 6, a rear thickness measuring device 9 is arranged in the rear detection chamber 7, a retarding wheel set 10 is arranged in a retarding area, and a tension wheel set 11 is arranged in a tension area. The front and rear thickness measuring devices are respectively used for detecting the thickness values of the paper-making meshes which enter the front and rear parts of the upper and lower bellows, signals of the front and rear thickness measuring devices are sequentially transmitted to the signal input end of the controller, and the controller controls and changes the tension degree between the retardation wheel set 10 and the tension wheel set 11 according to the thickness change of the paper-making meshes which pass through the hot air area of the heating and shaping device, so that the tension and the deformation of the section of the heated paper-making meshes are controlled. The retarding wheel set 10 and the tension wheel set 11 each include a pressing wheel on the lower side of the papermaking mesh, and the pressing wheels are respectively installed with an independent pushing component such as an electric pushing rod and controlled by a controller, usually, the tension wheel set 11 provides a moderate clamping force and also provides a power for active rotation, i.e. a stepping motor 28 for driving one of the tension wheels to rotate is installed on the shaft bracket of the tension wheel, usually, the retarding wheel set 10 provides a moderate clamping force to pull the papermaking mesh in a reverse direction, so that the papermaking mesh between the retarding wheel set 10 and the tension wheel set 11 is heated and then stretched by the tension force, and the stretching requires a thickness detection device to provide a corresponding thickness signal, and the controller controls the tension degree and the retarding degree. The retardation wheel set 10 may be provided with an electromagnetic damping device between the wheel or shaft and the shaft bracket and controlled by a controller, or the retardation wheel set 10 may be of the same structure as the tension wheel set 11, and the stepping motor is controlled by the controller. The control system block diagram is shown in fig. 7, and the control logic is shown in fig. 9.
The thickness measuring device can be any form or combined application of the existing thickness measuring device, such as an optical thickness meter or a thickness measuring device with a thickness measuring reference shaft (for example, the thickness measuring device comprises a reference shaft with a plurality of uniformly distributed deep ring grooves, two ends of the reference shaft are installed in corresponding shaft brackets through bearings, a plurality of uniformly distributed shallow ring grooves are distributed on a cylindrical section between every two adjacent deep ring grooves, a plurality of serially connected thickness measuring roller assemblies which are parallel to the reference shaft and are in corresponding contact with the reference shaft, each measuring ring is in corresponding clearance fit with the corresponding shallow ring groove for thickness measuring, a convex ring positioned between every two adjacent thickness measuring roller assemblies is in corresponding clearance fit with the corresponding deep ring groove for positioning, the height of each convex ring is slightly higher than that of the measuring ring for protecting the measuring ring part during the period, and the measuring ring is a pressure-sensitive element).
The blocking wheel set 10 and the tension wheel set 11 provide clamping pressure while locally tensioning the heated paper making wire section. And a pressure roller can be additionally arranged between the outlet of the hot air circulation area and the outlet walking roller for shaping the papermaking net in a heating and tension state.
Example 2: on the basis of the embodiment 1, a deviation correcting device 12 is arranged in the front detection chamber 6, and a laser leveling probe 13 and a shearing device 14 are arranged in the rear detection chamber 7. Wherein, the laser leveling probe 13 transmits a signal to the controller, and the controller starts the operation of the cutting device 14 according to the feedback of the laser leveling probe 13, and normally, the cutting device 14 does not directly operate to prevent the interference with the sizing process of the paper-making mesh. The deviation correcting device 12 provides a leveling basis for the laser leveling probe 13, otherwise the paper making mesh may be damaged by blind shearing due to the error detection of the laser leveling probe 13 on one side caused by the integral deflection of the paper making mesh.
The deviation correcting device 12 may be any device with any deviation correcting function, or may be in a form as shown in fig. 4. Figure 4 provides a method for detecting the position of the wire edges and automatically maintaining the vertical rollers on both sides in near contact (not in full contact to prevent additional drag or friction on the wire) between the two sides of the wire, and de-skewing the wire only when necessary for wire deflection. It can be seen from the figure that, a vertical rod 121 is respectively arranged at two sides of the paper-making net, and the upper end and the lower end of the vertical rod are respectively sleeved in a transverse groove 126 arranged on the top plate and the bottom plate, a laser probe 122 is fixed on the upper side of the vertical rod 121 for detecting the paper-making net boundary, a vertical roller wheel 123 arranged on the vertical rod 121 through a bearing can rotate freely, and by designing the relative position of the laser probe 122 and the vertical roller shaft 123, the vertical roller wheel is just positioned at the position approximate to the paper-making net boundary after the laser probe moves from outside to inside to detect the paper-making net boundary. And a transverse driving mechanism I124 which is used for driving the two sides to vertically and parallelly contract inwards or expand outwards (contraction is needed in the heating process, and expansion is needed in the cooling process). For example, the first transverse driving mechanism 124 is an electric push rod or an electromagnetic telescopic member for providing a transverse push-pull force, or a driving structure in embodiment 3 is employed.
Example 3: in embodiment 2, as shown in fig. 5 and fig. 6, the driving mechanism is provided with racks 1246 respectively at the upper and lower ends of one side vertical rod, and racks 1246 are provided at the upper and lower ends of the other side vertical rod, a pair of racks on the upper and lower sides are buckled with each other with a fit gap, and a pair of racks on the upper and lower sides are respectively constrained by the guide seat 1247 and can only slide laterally. The gears 1245 are respectively sleeved in the matching gaps of the upper and lower racks in a matching way, and the gears 1245 are meshed with the racks adjacent to the upper and lower racks. A worm wheel 1243 mounted on the gear rotating shaft 1244 is engaged with a worm 1242, the worm is connected with the rotating shaft of the traverse motor, and the worm wheel, the worm and the motor are respectively mounted in the support 1241. Therefore, the controller controls the traverse motor to drive the gear to drive the corresponding rack to move according to the detection signal of the laser probe 122 in fig. 4, that is, the vertical rods on the two sides carry the vertical roller shafts to synchronously move inwards, so as to ensure that the papermaking mesh moves in the correct conveying direction.
With the increase of the number of the operation turns of the sizing equipment, the stretching rate of the paper-making net is increased and the retraction rate is decreased, so that the distance between the two side lines of the paper-making net is gradually contracted, but the vertical roller shafts 123 at two sides are always positioned at two sides of the paper-making net under the control of the laser probe 122 and the controller, and the control logic is shown in fig. 10.
Example 4: in addition to any of examples 1-3, a shearing apparatus as shown in FIG. 12 was used. The accuracy of the direction of travel of the wire is a prerequisite for ensuring that the cutting device 14 works correctly, the control logic of which is shown in fig. 11.
As can be seen from fig. 3 in conjunction with fig. 12, the apparatus includes two vertical screws 141 and guide rods 149 located at both sides of the paper making mesh, the two vertical screws 141 are respectively mounted in the axle seats of the top plate and the bottom plate of the outer frame through bearings, and the end of each vertical screw is further connected with the rotating shaft of the shear roller harmomegathus motor 142. Meanwhile, the vertical screw rod 141 is provided with upper and lower threaded sleeves 143, and the thread directions of the upper and lower threaded sleeves are opposite, so that when the vertical screw rod 141 rotates, the upper and lower threaded sleeves 143 synchronously move inwards or outwards. Shear rollers 144 are mounted on the side surfaces of the respective thread sleeves through bearings, and are butted against each other to build up an excess burr portion on the outer edge of the wire after the upper and lower thread sleeves are moved synchronously inward. In the process, only when the laser leveling probe 13 detects a signal, the corresponding shear roller harmomegathus motor is controlled to work to drive the corresponding shear roller to carry out construction action (the probability of burrs at the edge of the papermaking net is low, and extra retardation or friction of the construction roller to the papermaking net is prevented). As can be seen in fig. 2, the laser leveling probes 13 are located directly in front of each pair of building rollers and outside in correspondence with the wire side lines and are fixed to the front side of the respective threaded sleeves. Furthermore, the device also comprises a second transverse driving mechanism which is used for driving the two sides to vertically and parallelly retract inwards or expand outwards.
As shown in fig. 12, a limiting mechanism is further disposed between the upper and lower threaded sleeves, specifically, a screw hole 146 is disposed on one threaded sleeve and an adjusting screw 147 is mounted thereon, and a limiting blocking piece 148 is disposed on the other threaded sleeve, so that the limiting distance between the two threaded sleeves is changed by adjusting the screw, and the upper and lower shearing rollers are butted to form a closed shearing form. In addition, as shown in fig. 3 and 12, an electric heating roller 145 is further coaxially installed at each of the shearing rollers for hot press forming the building side. After the functions of the present embodiment are combined, a block diagram of a control system of the present embodiment is shown in fig. 13.
Example 5: the heating device of each of the embodiments 1 to 3 is configured as shown in fig. 14. As can be seen from fig. 1 and fig. 14, a heat sink 5 is fixed on the inner wall of the upper air box 2, a plurality of heat dissipation fins are distributed in the middle of the heat sink, gaps between the heat dissipation fins are penetrated up and down for dredging airflow, a heating coil 4 is arranged on the periphery of the heat sink, and the heat sink 5 and the inner cavity of the upper air box are heated by the heating coil. The air source output by the fan enters the radiator from the upper shunting cover 25 and the plurality of guide holes 26 which are parallel along the longitudinal direction, and flows through the gaps of the radiating fins from the upper side of the radiator to enter the lower side of the radiator, so that the heat conduction of the air source by the radiator 5 is realized. The air sources positioned on the shunting cover 25 are uniformly dispersed along the transverse direction by the plurality of guide holes 26 which are parallel along the longitudinal direction, the gap direction of each radiating fin is transverse and is vertical to the guide holes 26, the air sources are uniformly dispersed along the longitudinal direction by the gaps of the radiating fins, and finally, the air flow passing through the radiator is relatively uniform and dispersed. The uniformly heated air from the upper air box penetrates through the paper-making mesh and then enters the lower air box 3, and then forms a continuous circulating air path through the fan.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. For example, an electromagnetic clutch can be used to generate damping relation for a retarding wheel set, or an electromagnetic braking mechanism can be used to generate damping. The electric push rods for driving the tension roller group and the retarding roller group can be arranged vertically or inclined, or other components with electric control expansion and contraction such as electromagnets can be adopted to have forward pushing pressure, and the like. The arrangement position of the fan is not limited to a specific position, and the fan can be arranged on the external side wall and also can be arranged in the lower air box to save the volume. The ends of the outer frame may be constructed as shown in fig. 3, i.e. the outer frame comprises an upper side member and a symmetrical lower side member, and two side wall members, which are fixed to the two sides of the upper side member and the lower side member, respectively, by precise positioning, to form a combined whole. The present invention can also form a new example form by combining a part of the above embodiments and the corresponding figures respectively, for example, the deviation correcting device of fig. 4-6 and the shear roller group of fig. 12 are designed into two examples or combined into one example by combining the structures shown in fig. 2 and fig. 3 respectively, and the control functions shown in fig. 13 are all designed into a more complete control system in embodiment 1, etc.
Claims (9)
1. A paper-making net heating shaping cutting edge sealing device comprises two parallel rollers (19) and a tension mechanism, wherein the paper-making net ring is sleeved outside the rollers and is driven to rotate, and the paper-making net heating shaping device is positioned on one side of the paper-making net, and is characterized in that the heating shaping device comprises a closed outer frame (1), the inner cavity of the outer frame is divided into a plurality of independent functional areas by a plurality of clapboards, a single belt part of the paper-making net can penetrate through the middle part of the outer frame along the longitudinal direction, an upper air box and a lower air box are respectively positioned on the upper side and the lower side of the central part of the closed outer frame, an air source is introduced into the upper air box, the lower air box discharges hot air, a heating device positioned in the upper air box can continuously heat the air source, and the hot air enters the lower air box (3) from the upper air box (2) through the paper-making net (15), a continuous circulating air path is formed by a fan, a front detection chamber (6) and a retardation area are sequentially arranged outside the front side of the upper air box and the lower air box, a rear detection chamber (7) and a tension area are sequentially arranged outside the rear side of the upper air box and the lower air box, a front thickness measuring device (8) is at least arranged in the front detection chamber (6), a rear thickness measuring device (9) is arranged in the rear detection chamber (7), a retardation wheel set (10) is arranged in the retardation area, a tension wheel set (11) is arranged in the tension area, the front thickness measuring device and the rear thickness measuring device are respectively used for detecting the thickness values of the papermaking nets which enter the front part and the rear part of the upper air box and the lower air box, the signals of the front thickness measuring device and the rear thickness measuring device are sequentially transmitted to the signal input end of a controller, and the controller controls and changes the tension degree between the retardation wheel set (10) and the tension wheel set (11) according to the thickness change of the papermaking nets which pass through the hot air area of the heating and shaping device So as to control the tension and the deformation of the section of the papermaking net after being heated; the tension mechanism is characterized in that a tension wheel set is additionally arranged between two rollers (19), the adopted tension wheel set is characterized in that a mounting seat is arranged on a shaping frame, an electric push rod (20) of the tension mechanism is sleeved in the mounting seat, a pressure sensor is sleeved between the inner end of the tension mechanism and the mounting seat and connected with a signal input end of a controller, a telescopic end (21) of the outer end of the tension mechanism is fixedly connected with a wheel frame (22), a tension wheel (23) is mounted in the wheel frame (22), a papermaking net is sleeved on the outer side of the tension wheel (23), the pressure sensor (24) displays a rated pressure value, namely the tension degree of the tension wheel is gradually increased along with the temperature rise, and the controller is used for uniformly managing and enabling the temperature and the tension to be uniform.
2. A heat setting and cutting edge banding apparatus for a papermakers' fabric as claimed in claim 1 wherein the controller is adapted to vary the thermal control of the heating means in response to a temperature change signal from the temperature sensor by installing a temperature sensor at a corresponding location in the upper or lower windbox and transmitting a signal to a signal input of the controller for sensing the temperature of the fabric passing therethrough.
3. The apparatus of claim 2, wherein the controller outputs the control signal to control the power to the heating device by controlling a relay coil.
4. A heat setting and cutting edge banding apparatus for a papermaking screen as claimed in claim 1 wherein the retarding roller assembly (10) and the tensioning roller assembly (11) each comprise a pair of pinch rollers positioned on the underside of the papermaking screen, and wherein a separate pusher member is mounted on the shaft of each of the pinch rollers and is controlled by the controller, and wherein the tensioning roller assembly (11) provides positive rotational power in addition to a moderate clamping force, and wherein a stepper motor (28) is mounted on the shaft of one of the tensioning rollers for driving rotation of the one of the tensioning rollers.
5. A heat setting and cutting edge banding device for a paper web according to claim 4, characterized in that said blocking wheel unit (10) is formed by adding an electromagnetic damping device between the wheel or shaft and the frame and controlled by said controller, or said blocking wheel unit (10) is formed by the same structure as said tension wheel unit (11) and the stepping motor is controlled by said controller.
6. A heat setting and cutting edge banding apparatus as claimed in claim 1 wherein said thickness measuring means comprises an optical thickness gauge or a thickness measuring device having a reference axis for measuring thickness.
7. A heat setting and cutting edge banding apparatus as claimed in claim 1, wherein a pressure roll is provided between said exit through said air circulation zone and said exit traveling roll for setting said wire under heat and tension.
8. A heat setting and cutting edge banding device for a paper web according to claim 1, wherein a deviation correction device (12) is provided in the front inspection chamber (6) and a laser leveling probe (13) and a shearing device (14) are provided in the rear inspection chamber (7).
9. A heat setting, cutting and edge banding apparatus as claimed in claim 8, wherein said shearing means comprises two pairs of shear rollers disposed on opposite sides of said paper web, each pair of shear rollers having edges and being disposed on respective upper and lower sides of said paper web, said edges of each pair of shear rollers being positioned in a corresponding or staggered relationship, each pair of shear rollers being provided with a traverse actuator and being controlled by said controller to effect horizontal traverse, said controller controlling said traverse actuators in response to web edge detection signals provided by said laser leveling probe (13) to cause said respective pair of shear rollers to traverse in response to said web edges.
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| CN115704142A (en) * | 2021-08-12 | 2023-02-17 | 礼德滤材科技(苏州)有限责任公司 | Spiral net setting machine and spiral net setting method |
| CN115490063B (en) * | 2022-06-07 | 2023-10-03 | 南通龙士莱纺织有限公司 | Textile equipment is used in intelligent manufacturing based on fixed cloth of negative pressure |
| CN114960091B (en) * | 2022-06-30 | 2024-01-02 | 礼德滤材科技(苏州)有限责任公司 | Non-contact shaping machine and shaping method for heat shaping of spiral net |
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Denomination of invention: Heating, shaping, cutting and edge sealing device for paper mesh Granted publication date: 20230110 Pledgee: Henan Shenqiu Rural Commercial Bank Co.,Ltd. Pledgor: Henan Jingxin Science and Technology Co.,Ltd. Registration number: Y2024980000767 |
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