CN109719860B

CN109719860B - Manufacturing equipment and manufacturing method for continuously processing insulating sheet by prepreg

Info

Publication number: CN109719860B
Application number: CN201811587369.1A
Authority: CN
Inventors: 许莆嘉
Original assignee: Zhejiang Lihe Electric Technology Co ltd
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2020-04-07
Anticipated expiration: 2038-12-25
Also published as: CN109719860A

Abstract

The invention provides a manufacturing device and a manufacturing method for continuously processing insulating sheets by prepreg, wherein the manufacturing device automatically cuts the connecting end parts of two prepregs to be connected to form a first splicing head and a second splicing head which are in dovetail-shaped and mutually inserted splicing fit, the first splicing head and the second splicing head are in hot-press connection by a connecting mechanism, and meanwhile, a material supplementing port is supplemented by a material supplementing mechanism to realize the connection of the first splicing head and the second splicing head, the manufacturing method automatically cuts the connecting end parts of the two prepregs to be connected to form the first splicing head and the second splicing head which are in dovetail-shaped and mutually inserted splicing fit by adding a connecting splicing step and a material supplementing filling step, and simultaneously, the material supplementing mechanism is used for automatically supplementing material to the material supplementing port, and connecting the first splicing head with the second splicing head.

Description

Manufacturing equipment and manufacturing method for continuously processing insulating sheet by prepreg

Technical Field

The invention relates to the technical field of prepreg processing insulation sheets, in particular to a device and a method for manufacturing a prepreg continuous processing insulation sheet.

Background

The prepreg reinforced composite material is a composition prepared by impregnating continuous fibers or fabrics with a resin matrix under strictly controlled conditions to prepare the resin matrix and a reinforcement, is an intermediate material for manufacturing the composite material, and is classified according to physical states, and the prepreg is divided into a unidirectional prepreg, a unidirectional fabric prepreg and a fabric prepreg; the prepreg is divided into thermosetting resin prepreg and thermoplastic resin prepreg according to different resin matrixes; according to different reinforcing materials, the prepreg is divided into carbon fiber (fabric) prepreg, glass fiber (fabric) prepreg and aramid fiber (fabric) prepreg; according to the difference of the fiber length, the prepreg is divided into short fiber (4176mm or less) prepreg, long fiber (1217mm) prepreg and continuous fiber prepreg; according to different curing temperatures, the prepreg can be divided into a medium-temperature curing (120 ℃) prepreg, a high-temperature curing (180 ℃) prepreg, a prepreg with the curing temperature exceeding 200 ℃ and the like.

Meanwhile, the prepreg is a high-quality material for manufacturing an insulating sheet after being modified, the prepreg in a roll can be processed to form the insulating sheet by slicing, however, in the process of processing and producing the insulating sheet, two rolls of prepreg need to be connected through hot-pressing, so that the two rolls of prepreg are connected end to end, and the traditional hot-pressing is to overlap the two rolls of prepreg together end to form a connecting part, so that the connecting part of two layers of prepreg can be generated.

The Chinese patent with the patent number of CN108357119A discloses a fiber prepreg mould hot-pressing continuous production line, which comprises a longitudinal frame device, a transverse frame device and a forming press, wherein the longitudinal frame device longitudinally penetrates through the forming press and the transverse frame device, the transverse frame device is positioned at one end of the longitudinal frame device, and the forming press is positioned at one side of the transverse frame device; a longitudinal slide rail assembly is arranged in the longitudinal rack device, and a stacked material carrying movable trolley is mounted through the longitudinal slide rail assembly and longitudinally moves in the longitudinal rack device, the forming press and the transverse rack device; the longitudinal frame device is provided with three longitudinal position sensors, wherein the first longitudinal position sensor is located at the other end of the longitudinal frame device, the second longitudinal position sensor is located at the forming press, and the third longitudinal position sensor is located at the transverse frame device.

Disclosure of Invention

Aiming at the problems, the invention provides a manufacturing device for continuously processing an insulating sheet by prepreg, which is characterized in that a dovetail-shaped first splicing head and a dovetail-shaped second splicing head which are mutually inserted and spliced and matched are formed by automatically cutting the connecting end parts of two prepregs to be connected, a feeding opening is supplemented by a feeding mechanism while the first splicing head and the second splicing head are subjected to hot-press connection by a connecting mechanism, the first splicing head and the second splicing head are connected by flowing resin and fiber wires, the technical problem of inconsistent thickness after prepreg splicing is solved, and the tensile strength and the shear strength of the prepreg connecting part are improved.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a preimpregnation material continuous type processes manufacture equipment of insulating piece, along the processing direction of delivery of preimpregnation material, includes unwinding device, modified device, section device in proper order, still including set up in connecting device between modified device and the section device, connecting device includes:

the connecting mechanism comprises a connecting workbench which is horizontally arranged, a hot pressing plate which can be arranged in a lifting manner along the vertical direction is arranged right above the connecting workbench, heating wires are arranged in the hot pressing plate along the length direction of the hot pressing plate, the hot pressing plate is used for connecting the head and tail lap joints of adjacent prepregs, and unlocking blocks are arranged at four corners of the hot pressing plate;

the positioning mechanism is arranged in front of the connecting mechanism along the processing and conveying direction of the prepreg and comprises a mounting frame, a first connecting plate and a first positioning assembly, the first connecting plate is horizontally arranged on the mounting frame, one end, overlapped with the connecting workbench, of the first connecting plate is a first tooth-missing part in dovetail tooth shape arrangement, the first positioning assembly is arranged right above the first connecting plate along the processing and conveying direction of the prepreg and used for pressing and fixing the prepreg laid on the first connecting plate, and the prepreg is released from being fixed by the clamping of the unlocking block;

the cropping mechanism is arranged behind the connecting mechanism along the processing and conveying direction of the prepreg and comprises a turnover component, a slitting component, a second positioning component and a limiting component, the turnover component comprises a second connecting plate which is arranged on the frame in a turnover mode, the second connecting plate and one end, which is overlapped with the connecting workbench, of a second toothless part which is arranged in a dovetail tooth shape and is arranged in a penetrating and matching mode with the first toothless part, a material supplementing opening is arranged between the second connecting plate and the first toothless part, the slitting component comprises a first cutter and a second cutter, the first cutter is fixedly arranged on a turnover path of the second connecting plate through the frame and is correspondingly matched with the second toothless part in a penetrating and matching mode, the second cutter is arranged on one side, back to the prepreg, of the second toothless part and is correspondingly matched with the first toothless part in a penetrating and matching mode, the second positioning component is symmetrically arranged on two sides of the second connecting plate in the width direction, the limiting assemblies are symmetrically arranged on two sides of a rotating shaft of the second connecting plate and used for positioning and locking the second connecting plate in a horizontal state;

the conveying mechanism is arranged behind the head cutting mechanism and comprises a clamping roller assembly and a driving assembly, the clamping roller assembly is used for clamping prepreg and can be arranged in a lifting mode, the driving assembly is used for driving the prepreg to be conveyed, the clamping roller assembly is arranged in a lifting mode and can be connected with the driving assembly in a transmission mode, the clamping roller assembly descends and extrudes the limiting assembly, and the limiting assembly is used for removing positioning and locking of the limiting assembly on the second connecting plate; and

feed supplement mechanism, feed supplement mechanism set up in connect workstation department, it includes first suction pipeline, second suction pipeline, hot-melt case, feeder sleeve and lifting unit, first suction pipe connection first cutter with hot-melt case, its suction prepreg waste material after first cutter excision, second suction pipe connection connect workstation with hot-melt case, its suction prepreg waste material after the second cutter excision, hot-melt case heating melt the prepreg waste material of first suction pipeline and second suction pipeline suction, the feeder sleeve with hot-melt case intercommunication sets up, it through the vertical lift of lifting unit set up in connect the workstation under, and it is right the gap department of first scarce tooth portion and second scarce tooth portion carries out the feed supplement.

As an improvement, the unwinding device comprises:

the unwinding support is arranged in a U shape, and coiled prepreg is erected on the unwinding support;

the winding device comprises a winding motor, wherein the winding motor is arranged on one side of the winding support and drives the prepreg to rotate through a transmission gear assembly.

As an improvement, the first positioning component includes:

the pushing piece is arranged at the top of the first connecting plate and is used for vertically pushing, and the pushing end of the pushing piece is connected with a horizontally arranged pressing plate;

the first positioning rods are symmetrically and vertically arranged at two ends of the first connecting plate in the width direction, a first pressing block is arranged at the part of the first positioning rods, which is positioned above the first connecting plate, a triangular first guide block is arranged at the part of the first positioning rods, which is positioned below the first connecting plate, and a first elastic piece is arranged between the first pressing block and the first connecting plate in a propping manner;

the second positioning rods are symmetrically and horizontally arranged at two ends of the first connecting plate in the width direction, are arranged in a one-to-one correspondence manner with the first positioning rods, and are provided with triangular first clamping blocks at one ends opposite to the first guide blocks, conical second clamping blocks are arranged at one ends of the first clamping blocks opposite to the first guide blocks, first clamping ports clamped with the first positioning rods are arranged on the first clamping blocks, the inclined surfaces of the first clamping blocks are in sliding fit with the inclined surfaces of the first guide blocks, the second clamping blocks are correspondingly clamped with the unlocking blocks, and second elastic pieces in a compression manner are sleeved on the second positioning rods; and

the inductor is arranged on the first connecting plate and used for detecting the end part of the prepreg output by the unwinding device.

As an improvement, the flip assembly further comprises:

the traction pneumatic spring is arranged on the rack, and the telescopic end of the traction pneumatic spring is connected with the second connecting plate;

driven gears symmetrically arranged on the rotating shafts on the two sides of the second connecting plate;

and the overturning motor is arranged on one axial side of the rotating shaft of the second connecting plate, a driving gear is sleeved on a motor shaft of the overturning motor, and the driving gear is in meshing transmission with the driven gear.

As an improvement, the second positioning assembly comprises:

the jacking blocks are symmetrically arranged on two sides of the second connecting plate and fixedly connected with the rack;

the third positioning rods are symmetrically and vertically arranged at two ends of the second connecting plate in the width direction, rotate along with the second connecting plate and are in extrusion contact with the jacking blocks, second pressing blocks are arranged on the parts of the third positioning rods above the second connecting plate, triangular second guide blocks are arranged on the parts of the third positioning rods below the second connecting plate, and third elastic pieces are arranged between the second pressing blocks and the second connecting plate in a propping manner; and

the fourth positioning rod is symmetrically and horizontally arranged at two ends of the second connecting plate in the width direction, is in one-to-one correspondence with the third positioning rod and is just opposite to one end of the second guide block, a triangular third clamping block is arranged at one end of the third clamping block, the third clamping block faces away from the second guide block, a conical fourth clamping block is arranged at one end of the second guide block, a second bayonet clamped with the third positioning rod is arranged on the third clamping block, the inclined surface of the third clamping block is in sliding fit with the inclined surface of the second guide block, the fourth clamping block corresponds to the unlocking block in clamping, and a fourth elastic piece in compression setting is sleeved on the fourth positioning rod.

As an improvement, the spacing subassembly includes:

the T-shaped locking block is vertically arranged right above the driven gear in a sliding manner along the guide rod and is clamped with the driven gear;

the fifth elastic piece is sleeved on the guide rod, is arranged in a compressed mode and extrudes the T-shaped locking block; and

the lever is hinged to the rack, one end of the lever is sleeved with the T-shaped locking block through a kidney-shaped groove, and the other end of the lever is arranged under the clamping roller component in a swinging mode.

As an improvement, the clip stick assembly comprises:

the device comprises clamping rollers, a conveying device and a control device, wherein the clamping rollers are rotatably arranged in parallel, and prepreg is conveyed between the two clamping rollers;

the cross guide blocks are symmetrically arranged at two axial ends of the clamping rod, sleeved on the clamping rod and vertically arranged in a lifting manner;

the optical axes are symmetrically and vertically arranged at two axial ends of the clamping roller and used for guiding the vertical lifting of the cross-shaped guide block; and

the elastic cushion covers the bottom of the optical axis, and the elastic cushion covers the bottom of the optical axis and cushions the cross-shaped guide block.

As an improvement, the drive assembly comprises:

the driving motor is arranged on any side of the clamping rod in the axial direction;

the gear transmission group is arranged on the clamping roller and is positioned on the same side of the clamping roller in the axial direction with the driving motor;

and the driving gear is arranged on the driving motor, sleeved on a motor shaft of the driving motor and in meshing transmission with the gear transmission set.

As an improvement, the lift assembly comprises:

the first racks are vertically arranged on two sides of the width direction of the hot pressing plate and are arranged along with the hot pressing plate in a lifting way;

the rotary gears are rotatably arranged on two sides of the connecting workbench in the length direction and meshed with the first rack;

and the second racks are vertically arranged on two sides of the feeding pipe in the length direction, are arranged on the other side of the rotating gear relative to the first racks and are meshed with the rotating gear.

The manufacturing equipment has the beneficial effects that:

(1) according to the invention, the connecting end parts of two pieces of prepreg to be connected are automatically cut to form a first splicing head and a second splicing head which are mutually inserted, spliced and matched in a dovetail shape, the first splicing head and the second splicing head are hot-pressed and connected through a connecting mechanism, a material supplementing port is supplemented through a material supplementing mechanism, the first splicing head and the second splicing head are connected through the flowing compatibility of flowing resin and fiber yarns, the condition of inconsistent thickness after the prepreg is spliced is avoided, and meanwhile, the tensile strength and the shearing strength of the joint of the prepreg are improved through dovetail splicing and filler supplementation;

(2) according to the invention, the first splicing head and the second splicing head are arranged in a dovetail shape, and the dovetails are spliced in a staggered manner, so that when the prepreg is stretched, the tensile strength of the prepreg can be enhanced through the bevel edge splicing parts of the dovetails, and the tensile stress is dispersed through the inclined plate, so that the strength is higher than that of straight edge splicing;

(3) according to the invention, the collected and sheared prepreg waste is utilized, then the prepreg waste is subjected to hot melting to form fluid resin and fiber yarns in a free state, the resin and the fiber yarns are utilized to supplement filler to the material shortage port, the heat of the hot pressing plate is matched to enable the resin on the first splicing head and the resin on the second splicing head to be subjected to hot melting, and the tensile strength and the shearing strength of the prepreg connecting part are enhanced through the flowing compatibility of the resin and the mutual connection and complementation of the fiber yarns at the material shortage port;

(4) according to the invention, the transmission connection between the clamping roller assembly and the driving assembly is controlled by adjusting the tensioning degree of prepreg conveying, so that the braking and conveying in the prepreg conveying process are realized, and the cutting assembly can automatically cut the prepreg to form a first splicing head and a second splicing head;

(5) when the clamping roller assembly and the driving assembly are separated and the prepreg conveying is suspended, the clamping roller assembly slides downwards by means of gravity to pull the prepreg, so that the end part of the prepreg is automatically positioned on the second splicing plate, and the subsequent cutting of a first cutter is facilitated to form a first splicing head;

(6) according to the invention, the clamping roller assembly is extruded with the lever when sliding to the bottom of the optical axis by gravity, the T-shaped locking block is lifted by the lever, the positioning and locking of the second splice plate are released, the automatic rotation of the second splice plate is realized, and the cutting action of the prepreg and the first cutter is further realized;

(7) when the first splicing head and the second splicing head are cut from the prepreg, the prepreg is fixed through the first positioning assembly and the second positioning assembly respectively, so that the sliding of the prepreg in the cutting process is avoided, and the cut first splicing head and the cut second splicing head cannot be spliced perfectly;

(8) in the descending process of the hot pressing plate, the first positioning assembly and the second positioning assembly are unlocked through the unlocking fixture block, so that the hot pressing plate can quickly tension and adjust the prepreg after hot pressing connection of the first splicing head and the second splicing head is completed, and automatic conveying of the prepreg is realized;

(9) according to the invention, during the descending of the hot pressing plate, the upgrading component drives the feeding pipe to ascend to the lower part of the material supplementing opening, the material supplementing opening is supplemented by the material supplied by the hot melting box, and when the hot pressing plate ascends, the feeding pipe automatically and synchronously descends, so that the interference in the subsequent processing process is avoided.

Aiming at the problems, the invention provides a method for continuously processing an insulating sheet by prepreg, which comprises the steps of adding a connecting and splicing step and a material supplementing and filling step, automatically cutting the connecting end parts of two pieces of prepreg to be connected to form a first splicing head and a second splicing head which are in dovetail tooth-shaped and mutually interpenetrated splicing fit, and synchronously performing automatic material supplementing on a material supplementing port by using a material supplementing mechanism while performing hot-pressing connection on the first splicing head and the second splicing head by using a connecting mechanism, so that the resin on the first splicing head and the resin on the second splicing head are compatible with the supplemented resin after being subjected to hot melting, and fiber wires are wound with each other, thereby realizing the connection of the prepreg and solving the technical problem of inconsistent thickness after the prepreg is spliced.

A method for manufacturing an insulating sheet by continuously processing a prepreg comprises the following steps:

step a), unreeling, namely, unreeling the coiled prepreg by the drive of an unreeling motor on an unreeling device and horizontally and backwards conveying the unreeled prepreg to a modification device;

b) modifying, namely allowing the prepreg conveyed to the modifying device to pass through a drying box arranged on the modifying device, and heating the modifying device to modify the prepreg;

c) slicing, namely heating the modified prepreg by using a modification device, and if the unreeling device is not unreeled, horizontally conveying the prepreg to a slicing device, and cutting to form an insulating sheet;

step d) connection, wherein the prepreg is heated and modified by the modifying device, if the unreeling device is completely unreeled, the head and tail connection parts of two adjacent groups of prepregs are connected by the connecting device, and the method comprises the following steps:

step one), braking, namely after the unreeling device finishes unreeling a previous roll of prepreg, replacing the next roll of prepreg, losing traction after the previous roll of prepreg is unreeled close to the unreeling device, enabling a clamping roller assembly in the connecting device to lose the tension force of the prepreg and slide downwards along an optical axis, enabling the clamping roller assembly to be separated from a driving motor in a transmission connection state, and stopping conveying the previous roll of prepreg;

step two), rotationally unlocking, wherein in the process that the clamping roller assembly slides downwards along the optical axis, the T-shaped locking block is driven to lift upwards by extruding the lever, and the locking and positioning of the driven gear are released;

step three), cutting once, and after the locking and positioning of the driven gear are released, turning over the second connecting plate, namely the manufacturing method for continuously processing the insulating sheet by using the prepreg, under the guidance of a traction pneumatic spring, and inserting and cutting the prepreg paved on the second connecting plate and a first cutter to form a dovetail-shaped first splicing head;

step four), conveying new materials, wherein in synchronization with the step two and the step three, after the prepreg of the next roll replaced on the unreeling device is driven by the unreeling motor to be conveyed onto the first connecting plate, the unreeling motor is controlled to stop rotating after the prepreg is sensed by the sensor, and the pushing member is synchronously controlled to extrude the first positioning rod to fix the prepreg;

step five), secondary cutting, namely after the prepreg on the manufacturing method for continuously processing the insulating sheet by using the prepreg of the second connecting plate is cut, driving the second connecting plate to reversely rotate and reset by using a turnover motor, and performing inserting cutting on the prepreg paved on the first connecting plate by using a second cutter to form a dovetail-shaped second splicing head;

step six), performing hot melting on the waste, wherein the prepreg waste generated after the cutting of the first cutter and the second cutter is respectively sucked into a hot melting box through a first suction pipeline and a second suction pipeline to be heated to form fluid, and the step three is synchronous to the step five;

step seven), splicing, namely, after the second splicing head and the first splicing head which are formed by cutting are spliced in an inserting way, pressing the second splicing head and the first splicing head by a hot pressing plate to ensure that thermosetting resins on the second splicing head and the first splicing head are mutually compatible and connected after being heated;

step eight), supplementing and filling, wherein in a process of pressing down the hot pressing plate, the rotating gear is driven to rotate by downward movement of the first rack, so that the feeding pipe connected with the second rack is driven to be lifted upwards and inserted into a supplementing opening to supplement and supply, and the first splicing head and the second splicing head are connected in a compatible manner;

step nine) tensioning adjustment, after the second splicing head is connected with the first splicing head, the hot pressing plate resets, the unwinding motor drives the prepreg to turn over, the prepreg is tensioned again, after the clamping roller assembly ascends and is in transmission connection with the driving motor through tensioning of the prepreg, the unwinding motor and the driving motor synchronously rotate in the same direction, and the prepreg is conveyed backwards and sequentially passes through the modification device and the slicing device.

The method has the beneficial effects that:

(1) the invention relates to a manufacturing method for continuously processing an insulating sheet by prepreg, which is characterized in that a connecting and splicing step and a material supplementing and filling step are added, the connecting end parts of two pieces of prepreg to be connected are automatically cut to form a first splicing head and a second splicing head which are mutually inserted, spliced and matched in a dovetail shape, the first splicing head and the second splicing head are synchronously subjected to hot-pressing connection by a connecting mechanism, and meanwhile, a material supplementing opening is automatically supplemented by a material supplementing mechanism, so that the resin on the first splicing head and the second splicing head is compatible with supplemented resin after being subjected to hot melting, and fiber wires are wound mutually, so that the prepreg is connected, the condition of inconsistent thickness after the prepreg is spliced is avoided, and the tensile strength and the shearing strength of a prepreg connecting part are enhanced.

In conclusion, the invention has the advantages of consistent thickness after splicing, high strength of spliced parts and the like, and is particularly suitable for the technical field of processing insulating sheets by prepreg.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a partial perspective view of the present invention;

FIG. 3 is a partial front view of the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 3;

FIG. 5 is a schematic perspective view of a positioning mechanism according to the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 5;

FIG. 7-1 is an enlarged view of a broken structure of the second positioning assembly of the present invention;

FIG. 7-2 is an enlarged view of a fracture structure of the first positioning assembly of the present invention;

FIG. 8-1 is an enlarged view of a fracture structure of the first positioning assembly of the present invention;

FIG. 8-2 is an enlarged view of the fracture structure of the first positioning assembly of the present invention

FIG. 9-1 is a schematic perspective view of a second positioning rod according to the present invention;

FIG. 9-2 is a perspective view of a fourth positioning rod according to the present invention;

FIG. 10 is a cross-sectional view of the hot platen unlocking first positioning assembly and the second positioning assembly of the present invention;

FIG. 11 is a schematic cross-sectional view of the cutting head mechanism of the present invention;

FIG. 12 is a schematic perspective view of the head cutting mechanism of the present invention

FIG. 13 is a schematic view of a splicing structure of a first connecting plate and a second connecting plate according to the present invention;

FIG. 14 is a schematic perspective view of a second splice plate according to the present invention

FIG. 15 is a schematic view of a splicing structure of a first splice and a second splice according to the present invention;

FIG. 16 is a schematic perspective view of a feeding mechanism according to the present invention;

FIG. 17 is a perspective view of the connection table according to the present invention;

FIG. 18 is a schematic view of a partial structure of a feeding mechanism according to the present invention;

FIG. 19 is an enlarged structural view of the structure at C in FIG. 18;

FIG. 20 is a schematic view of the butt joint structure of the feeding tube and the material replenishing port according to the present invention;

FIG. 21 is a perspective view of a clamping roller assembly according to the present invention;

FIG. 22 is a perspective view of the driving assembly of the present invention;

FIG. 23 is a flow chart of a second process of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example 1:

as shown in fig. 1, fig. 3, fig. 5, fig. 11, fig. 13, fig. 14, fig. 15, fig. 16, fig. 17, and fig. 21, an apparatus for manufacturing an insulating sheet by continuous processing of prepreg includes, in order along a processing and conveying direction of prepreg, an unwinding device i, a modifying device ii, a slicing device iii, and a connecting device iv disposed between the modifying device ii and the slicing device iii, and the connecting device iv includes:

the connecting mechanism 1 comprises a connecting workbench 11 which is horizontally arranged, a hot pressing plate 12 which can be arranged in a lifting manner along the vertical direction is arranged right above the connecting workbench 11, heating wires are arranged in the hot pressing plate 12 along the length direction of the hot pressing plate, the hot pressing plate 12 is used for connecting the head and tail lap joints of adjacent prepregs, and unlocking blocks 121 are arranged at four corners of the hot pressing plate 12;

the positioning mechanism 2 is arranged in front of the connecting mechanism 1 along the processing and conveying direction of the prepreg, and comprises a mounting frame 21, a first connecting plate 22 and a first positioning component 23, the first connecting plate 22 is horizontally arranged on the mounting frame 21, one end, overlapped with the connecting workbench 11, of the first connecting plate 22 is a first tooth missing part 221 in a dovetail tooth shape, the first positioning component 23 is arranged right above the first connecting plate 22 along the processing and conveying direction of the prepreg, compresses and fixes the prepreg laid on the first connecting plate 22, and is clamped by the unlocking block 121 to release the fixation of the prepreg;

crop mechanism 3, crop mechanism 3 sets up in coupling mechanism 1's rear along the processing direction of delivery of preimpregnation material, and it includes upset subassembly 31, cuts subassembly 32, second locating component 33 and spacing subassembly 34, upset subassembly 31 is including turning over the second connecting plate 311 that sets up in frame 310, this second connecting plate 311 with the lapped one end of connecting workstation 11 is the second scarce tooth portion 3111 of forked tail dentate setting, its with first scarce tooth portion 221 interlude cooperation sets up, and its with be provided with feed supplement mouth 220 between the first scarce tooth portion 221, cut subassembly 32 includes first cutter 321 and second cutter 322, first cutter 321 passes through frame 310 fixed set up in on the upset route of second connecting plate 311, its with second scarce tooth portion 3111 corresponds and alternates the cooperation, second cutter 322 set up in second scarce tooth portion 1 one side of preimpregnation material dorsad, the second positioning components 33 are symmetrically arranged on two sides of the second connecting plate 311 in the width direction, and compress and fix the prepreg laid on the second connecting plate 311, and are clamped and released by the unlocking blocks 121, and the limiting components 34 are symmetrically arranged on two sides of the rotating shaft of the second connecting plate 311, and position and lock the second connecting plate 311 in a horizontal state;

the conveying mechanism 4 is arranged behind the head cutting mechanism 3 and comprises a clamping roller component 41 for clamping prepreg to be arranged in a lifting mode and a driving component 42 for driving the prepreg to be conveyed, the clamping roller component 41 is arranged to ascend and be connected with the driving component 42 in a transmission mode, the clamping roller component 41 descends and is extruded with the limiting component 34, and the limiting component 34 is released from positioning and locking the second connecting plate 311; and

a material supplementing mechanism 5, wherein the material supplementing mechanism 5 is arranged at the connecting workbench 11 and comprises a first suction pipeline 51, a second suction pipeline 52, a hot melting box 53, a feeding pipe 54 and a lifting assembly 55, the first suction duct 51 connects the first cutter 321 with the hot melt box 53, which sucks the prepreg waste cut by the first cutter 321, the second suction pipe connects the connecting table 11 and the hot melting box 53, which sucks the prepreg waste cut by the second cutter 322, the hot melting tank 53 heats and melts the prepreg waste sucked by the first suction pipe 51 and the second suction pipe 52, the supply pipe 54 is communicated with the hot melting tank 53, the lifting assembly 55 is vertically lifted and arranged under the connecting workbench 11, and the gap between the first tooth-lacking portion 221 and the second tooth-lacking portion 3111 is supplemented.

The prepreg for cutting the insulating sheet is unreeled through the unreeling device I, the prepreg is modified through drying and heating by the mould pressing device II, and the modified prepreg is cut by the slicing device III so that the prepreg is sliced to form the insulating sheet.

It is further described that, in the process of processing the insulating sheet by using the conventional prepreg, the two rolls of prepreg need to be connected end to end in the processing process, and the conventional connection method is to stack the prepregs from end to end and then thermally press the prepregs by using an electrically heated hot press plate, so that the prepregs are connected end to end into a whole.

For the technical problem, the prepreg to be lapped is used, the first cutter 321 and the second cutter 322 are used for respectively cutting the first splicing head 10a and the second splicing head 10b which can be spliced in an inserting manner, the first splicing head 10a and the second splicing head 10b are subjected to hot-pressing splicing through the hot pressing plate 12, so that the resins on the prepreg are mutually compatible after being hot-melted to form a stable connection interface layer, the prepreg is connected with each other, the cut prepreg is recycled through the material supplementing mechanism 5, hot-melted to form the fluid resin and the free-state fiber yarns, the material shortage opening 220 between the first splicing head 10a and the second splicing head 10b is filled, and the shearing strength and the tensile strength of the connection part of the prepreg are enhanced.

It should be emphasized here that the material supplementing mechanism uses a vacuum suction device arranged in the hot melting box 53 as a suction power, sucks the cut waste material through the first suction pipeline 51 and the second suction pipeline 52, enters the hot melting box 53, heats the waste material through a heating device in the hot melting box 53 to form fluid resin, meanwhile, the short fiber filaments in the hot melting box are in a free state in the resin, when the feeding pipe 54 pumps the resin and the fiber filaments to the material supplementing opening 220, the resin is compatible with the resin at the first splicing head 10a and the second splicing head 10b, the short fiber filaments are interlaced with the fiber filaments on the first splicing head 10a and the second splicing head 10b along with the flow of the resin, one end of the short fiber is at the first splicing head 10a, the other end is at the material supplementing opening 220, or one end of the short fiber is at the second splicing head 10b, the other end is at the material supplementing opening 220, the short fibers arranged in such a staggered manner can enhance the shearing and stretching strength of the joint of the first splicing head 10a and the second splicing head 10b by matching with resin.

Wherein, a discharge port 111 for discharging waste materials is arranged on the connecting working table 11, and the discharge port 101 is communicated with the second suction pipeline 52.

In the invention, when the prepreg is cut, the two side edges of the prepreg are respectively compressed and fixed through the first positioning component 23 and the second positioning component 33, so that the situation that the cut first splicing head 10a and the cut second splicing head 10b cannot be spliced due to the sliding of the prepreg in the cutting process is avoided.

In addition, in the process of replacing the prepreg by the unwinding device i, the unwound prepreg loses traction, the tension force disappears, the clamping roller assembly 41 and the driving assembly 42 are disconnected from transmission, so that the prepreg passing through the clamping roller assembly 41 temporarily loses traction conveying of winding, the prepreg can be stopped from being cut, and meanwhile, the prepreg is driven to move backwards to the second splicing plate 311 by the falling of the clamping roller assembly 41.

As shown in fig. 1, as a preferred embodiment, the unwinding device i includes:

the device comprises an unwinding support 61, wherein the unwinding support 61 is U-shaped, and coiled prepreg 60 is erected on the unwinding support 61;

and the unwinding motor 62 is arranged on one side of the unwinding support 61, and the winding motor 62 drives the prepreg 60 to rotate through a transmission gear assembly.

It should be noted that the prepreg 60 is erected on the unwinding support 61, the unwinding motor 62 drives the gear in friction fit with the paper tube of the prepreg 60 to rotate, and the friction force between the gear and the paper tube drives the prepreg 60 to unwind the prepreg.

As shown in fig. 11 and 12, as a preferred embodiment, the flipping unit 31 further includes:

the traction pneumatic spring 312 is arranged on the rack 310, and the telescopic end of the traction pneumatic spring 312 is connected with the second connecting plate 311;

driven gears 313, wherein the driven gears 313 are symmetrically arranged on two side rotating shafts of the second connecting plate 311;

and the overturning motor 314 is arranged on one side of the second connecting plate 311 in the axial direction of the rotating shaft, a driving gear 315 is sleeved on a motor shaft of the overturning motor 314, and the driving gear 315 is in meshing transmission with the driven gear 313.

It should be noted that when the second connecting plate 311 is in a free state, the prepreg flatly laid on the second connecting plate 311 is driven to turn over by the traction guide of the traction pneumatic spring 312, and in the turning process, the prepreg is cut by the first cutter 321 to form the first splicing head 10a, wherein the turning motor 314 realizes the turning over of the second connecting plate 311 through the matching of the driving gear 315 and the driven gear 313.

It is further noted that, in the present invention, the rotation angle of the second splicing plate 311 is 60-75 °, and within this angle, before the second splicing plate 311 rotates and the second positioning assembly 33 is not pressed, the prepreg on the second splicing plate 311 still lays on the second splicing plate 311 and cannot slide down, and the cut end thereof cannot be lifted up due to gravity.

As shown in fig. 5, 6, 7-2, 8-2 and 9-1, as a preferred embodiment, the first positioning assembly 23 includes:

the pushing piece 231 is arranged at the top of the first connecting plate 22 and is used for vertically pushing, and the pushing end of the pushing piece 231 is connected with a pressing plate 232 which is horizontally arranged;

the first positioning rods 233 are symmetrically and vertically arranged at two ends of the first connecting plate 22 in the width direction, a first pressing block 2331 is arranged at the part of each first positioning rod 233 above the first connecting plate 22, a triangular first guide block 2332 is arranged at the part of each first positioning rod 233 below the first connecting plate 22, and a first elastic piece 234 is arranged between each first pressing block 2331 and the first connecting plate 22 in a propping manner;

the second positioning rods 235 are symmetrically and horizontally arranged at two ends of the first connecting plate 22 in the width direction, are arranged in a one-to-one correspondence manner with the first positioning rods 233, and are provided with triangular first clamping blocks 2351 at one end opposite to the first guide block 2332, a conical second clamping block 2352 is arranged at one end, opposite to the first guide block 2332, of the first clamping block 2351, a first bayonet 2353 clamped with the first positioning rod 233 is arranged on the first clamping block 2351, the inclined surface of the first clamping block 2351 is in sliding fit with the inclined surface of the first guide block 2332, the second clamping block 2352 is correspondingly clamped with the unlocking block 121, and a second elastic piece 236 in compression arrangement is sleeved on the second positioning rods 235; and

and the sensor 237 is arranged on the first connecting plate 22, and detects the end part of the prepreg output by the unwinding device I.

As shown in fig. 7-1, 8-1, 9-2 and 11, further, the second positioning assembly 33 includes:

the top blocks 331 are symmetrically arranged on two sides of the second connecting plate 311, and are fixedly connected with the rack 310;

third positioning rods 332, the third positioning rods 332 are symmetrically and vertically arranged at two ends of the second connecting plate 311 in the width direction, rotate along with the second connecting plate 311, and are in compression contact with the top block 331, a second pressing block 3321 is arranged at a part of the third positioning rods 332 above the second connecting plate 311, a second guide block 3322 in a triangular shape is arranged at a part of the third positioning rods 332 below the second connecting plate 311, and a third elastic member 333 is arranged between the second pressing block 3321 and the second connecting plate 311 in a butting manner; and

the fourth positioning rod 334 is symmetrically and horizontally arranged at two ends of the second connecting plate 311 in the width direction, and is arranged in one-to-one correspondence with the third positioning rod 332, a triangular third clamping block 3341 is arranged at one end of the third clamping block 3341 opposite to the second guide block 3322, a conical fourth clamping block 3342 is arranged at one end of the third clamping block 3341 opposite to the second guide block 3322, a second bayonet 3343 clamped with the third positioning rod 332 is arranged on the third clamping block 3341, the inclined surface of the third clamping block 3341 is in sliding fit with the inclined surface of the second guide block 3322, the fourth clamping block 3342 is correspondingly clamped with the unlocking block 121, and a fourth elastic element 335 in a compression arrangement is sleeved on the fourth positioning rod 334.

It should be noted that in the present invention, the sensor 237 detects the transportation of the end of the newly erected prepreg 60, and sends an instruction to control the second pushing member 231 through the central control box to drive the pushing plate 232 to press the first positioning rod 233, so that the first pressing block 2331 on the first positioning rod 233 presses the two side edges of the prepreg on the first splicing plate 22, and in the process that the first positioning rod 233 is pressed down, the first guiding block 2332 on the first positioning rod 233 and the first clamping block 2351 on the second positioning rod 235 are pressed through an inclined plane, so that the first clamping block 2351 is pressed down, and then the first positioning rod 233 is clamped by the first clamping opening 2353 to achieve positioning.

It is further explained that the working principle of the second positioning assembly 33 is similar to that of the first positioning assembly 23, and the third positioning rod 332 and the top block 321 are driven to extrude through the second splicing plate 311 in the rotating process, so that the compression of the third positioning rod 322 is realized, and the two side edges of the prepreg are fixed.

As shown in fig. 10, as a preferred embodiment, unlocking blocks 121 are disposed at four corners of the horizontal plane of the hot press plate 12, the unlocking blocks 121 are respectively engaged with the first positioning assembly 23 and the second positioning assembly 33, and a U-shaped unlocking bayonet 122 is disposed thereon.

It should be noted that in the present invention, during the process of pressing down the first splicing head 10a and the second splicing head 10b by descending the hot press plate 12, the second positioning rod 235 and the fourth positioning rod 334 are respectively pulled to move backward by the engagement of the unlocking fixture block 121 with the second fixture block 2352 in the first positioning assembly 23 and the fourth fixture block 3342 in the second positioning assembly 33, so as to unlock the first positioning rod 233 and the third positioning rod 332, and the hot press plate 12 can tension, adjust, recover and convey the prepreg after hot press splicing of the first splicing head 10a and the second splicing head 10 b.

As shown in fig. 3 and 4, further, the locking assembly 34 includes:

the T-shaped locking block 341 is vertically arranged right above the first driven gear 333 by sliding along a guide rod 342, and is clamped with the first driven gear 333;

the fifth elastic member 343, the fifth elastic member 343 is sleeved on the guide rod 342, is compressed, and extrudes the T-shaped locking block 341; and

and the lever 344 is hinged to the mounting frame 310, one end of the lever 344 is sleeved with the T-shaped locking block 341 through a kidney-shaped groove 345, and the other end of the lever 344 is arranged under the clamping roller assembly 41 in a swinging mode.

It should be noted that, initially, the T-shaped locking block 341 and the driven gear 333 are in a locked and positioned state of being engaged, the second splicing plate 311 cannot rotate, and when the transmission of the clamping roller assembly 41 and the driving assembly 42 is released due to the tension of the prepreg, the clamping roller assembly 41 presses down the lever 344, and the lever 344 drives the T-shaped locking block 341 to move upward, so as to release the locked and positioned state of the driven gear 333, and thus the second splicing plate 311 is in a free rotation state.

It is further described that, after the second splicing plate 311 rotates to cut the prepreg thereon to form the first splicing head 10a, the second splicing plate 311 needs to be reset, the second splicing plate 311 is driven to reset by the flipping motor 314, then the second splicing plate 311 is pressed on the hot-pressing workbench 11 by using the hot-pressing plate 12, in the process that the hot-pressing splicing and resetting of the hot-pressing plate 12 on the first splicing head 10a and the second splicing head 10b are completed, the unreeling motor 62 rapidly rotates reversely, the tension of the prepreg is adjusted, the clamping roller assembly 41 resets, the T-shaped locking block 341 is locked with the first driven gear 333 again, the second splicing plate 311 is prevented from rotating, and after the clamping roller assembly 41 resets, the unreeling motor 62 rotates forward and rotates in the same direction as the driving motor 421.

As a preferred embodiment, as shown in fig. 21, the clamping and roll assembly 41 comprises:

the clamping rollers 411 are arranged in a parallel and rotating mode, and prepreg is conveyed between the two clamping rollers 411;

the cross guide blocks 412 are symmetrically arranged at two axial ends of the clamping rod 411, are sleeved on the clamping rod 411 and are vertically arranged in a lifting manner;

a plurality of optical axes 413, wherein the optical axes 413 are symmetrically and vertically arranged at two axial ends of the clamping rod 411 and guide the vertical lifting of the cross-shaped guide block 412; and

a plurality of elastic pads 414, the elastic pads 414 are sleeved on the bottom of the optical axis 413, and buffer the cross guide block 412.

As further shown in fig. 22, the drive assembly 42 includes:

a driving motor 421, wherein the driving motor 421 is arranged on any side of the clamping rod 411 in the axial direction;

the gear transmission set 422 is arranged on the clamping roller 411, and the gear transmission set 422 and the driving motor 421 are both positioned on the same side of the clamping roller 411 in the axial direction;

the driving gear 423 is disposed on the driving motor 421, sleeved on a motor shaft of the driving motor 421, and engaged with the gear transmission set 422 for transmission.

It should be noted that, in the present invention, the clamping roller 411 is made of a light material with a low density, such as aluminum, plastic, etc., so that the distance from the pivot point of the lever 344 to the clamping roller 411 is far greater than the distance from the clamping roller to the T-shaped locking block 341, so that the clamping roller 411 can drive the T-shaped locking block 341 to unlock with a small mass.

As shown in fig. 18, 19 and 20, as a preferred embodiment, the lifting assembly 55 includes:

the first racks 551 are vertically arranged on two sides of the hot pressing plate 12 in the width direction, and are arranged along with the hot pressing plate 12 in a lifting manner;

a rotary gear 552 rotatably disposed at both sides of the connecting table 11 in the longitudinal direction and engaged with the first rack 551;

and a second rack 553, the second rack 553 being vertically disposed at both sides of the feed pipe 54 in the length direction, being disposed at the other side of the rotary gear 552 with respect to the first rack 551, and being engaged with the rotary gear 552.

It should be noted that, when the first splicing plate 22 and the second splicing plate 311 are spliced and horizontally laid on the connecting workbench 11, the hot pressing plate 12 descends to perform hot-pressing connection on the first splicing head 10a and the second splicing head 10b, and meanwhile, the first rack 551 cooperates with the rotating gear 552 along with the descending of the hot pressing plate 12, so that the rotating gear 552 rotates, and the rotating gear 552 drives the second rack 553 to move upward, and then drives the feeding pipe 54 to move upward, and inserts into the material supplementing port 220 under, so as to supplement the material to the material supplementing port 220.

Example 2:

a method for manufacturing a prepreg continuously processed insulating sheet according to embodiment 2 of the present invention will be described with reference to embodiment 1.

As shown in fig. 23, a method for manufacturing an insulating sheet by continuous processing of prepreg includes the following steps:

step a), unreeling, namely, unreeling the coiled prepreg 60 by driving of an unreeling motor 62 on an unreeling device I and horizontally conveying the unreeled prepreg to a modification device II;

step b), modifying, namely enabling the prepreg conveyed to the modification device II to pass through a drying box arranged on the modification device II, and modifying the prepreg 60 by heating the modification device II;

c) slicing, namely heating the modified prepreg 60 by using a modification device II, if the unreeling device I is not unreeled, horizontally conveying the prepreg 60 to a slicing device III, and cutting to form an insulating sheet;

step d) connection, heating the modified prepreg 60 by the modification device II, and if the unreeling device I unreels the prepreg, connecting the head and tail connection parts of two adjacent groups of prepregs through a connection device IV, wherein the connection device comprises the following steps:

step one), braking, namely after the last roll of prepreg 60 is unreeled by the unreeling device I, replacing the next roll of prepreg 60, losing traction after the last roll of prepreg 60 is unreeled close to the unreeling device I, enabling a clamping roller assembly 41 in a connecting device IV to lose the tension force of the prepreg and slide downwards along an optical axis 413, enabling the clamping roller assembly 41 and a driving motor 421 to be separated from a transmission connection state, and stopping conveying the last roll of prepreg 60;

step two), rotationally unlocking, namely, in the process that the clamping roller assembly 41 slides downwards along the optical axis 413, driving the T-shaped locking block 341 to lift upwards by extruding the lever 344, and releasing the locking and positioning of the driven gear 313;

step three), cutting once, after the driven gear 313 is unlocked and positioned, the second connecting plate 311 turns over under the guidance of the traction pneumatic spring 312, and the prepreg spread on the second connecting plate and the first cutter 321 are inserted and cut to form a dovetail-shaped first splicing head 10 a;

step four), conveying new materials, namely, synchronously with the step two and the step three, driving the prepreg 60 of the next roll replaced on the unreeling device I to be conveyed onto the first connecting plate 22 by the unreeling motor 62, sensing by the sensor 237, controlling the unreeling motor 62 to stop rotating, synchronously controlling the pushing member 231 to extrude the first positioning rod 233, and fixing the prepreg 60;

step five), secondary cutting is carried out, after the prepreg on the second connecting plate 311 is cut, the overturning motor 314 drives the second connecting plate 311 to rotate reversely and reset, and the second cutting knife 322 cuts the prepreg flatly laid on the first connecting plate 22 in an inserting manner to form a dovetail-shaped second splicing head 10 b;

step six), performing hot melting on the waste materials, wherein the prepreg waste materials generated after the cutting of the first cutter 321 and the second cutter 322 are respectively sucked into a hot melting box 53 through a first suction pipeline 51 and a second suction pipeline 52 and are heated to form fluid, and the steps are synchronous with the steps from the third step to the fifth step;

step seven), splicing, namely, after the second splicing head 10b and the first splicing head 10a which are formed by cutting are spliced in an inserting way, a hot pressing plate 12 presses the second splicing head 10b and the first splicing head 10a downwards, so that thermosetting resin on the second splicing head 10b and the first splicing head 10a are heated and are mutually compatible to form connection;

step eight), supplementing and filling, wherein in synchronization with the step seven, in the process of pressing down the hot pressing plate 12, the rotating gear 552 is driven to rotate by downward movement of the first rack 551, so as to drive the feeding pipe 54 connected with the second rack 553 to be lifted upwards and inserted into the supplementing opening 220 for supplementing and supplying materials, so that the first splicing head 10a and the second splicing head 10b are compatibly connected;

step nine) tensioning adjustment, after the second splicing head 10b is connected with the first splicing head 10a, the hot pressing plate 12 is reset, the unreeling motor 62 drives the prepreg 60 to turn over, the prepreg is tensioned again, after the clamping roller assembly 41 rises and is in transmission connection with the driving motor 421 through tensioning of the prepreg, the unreeling motor 62 and the driving motor 421 synchronously rotate in the same direction, and the prepreg 60 is conveyed backwards and sequentially passes through the modification device II and the slicing device III.

In the third step and the fifth step, the prepreg is respectively fixed on the first splicing plate 22 and the second splicing plate 311 through the first positioning component 23 and the second positioning component 33, so that the prepreg in the cutting process can not move.

Further, it is explained that, in the third and fifth steps, the first positioning assembly 23 and the second positioning assembly 33 lock and fix the prepreg, and when the hot pressing plate 12 descends to hot press the second splicing head 10b and the first splicing head 10a in the fifth step, the second positioning rod 235 and the fourth positioning rod 334 are respectively pulled to move backwards by the downward pressing of the unlocking fixture block 121 fixedly arranged with the hot pressing plate 12, so as to release the locking of the first positioning rod 233 and the third positioning rod 332.

It is further noted that, in the seventh step, the hot press plate 12 is used to connect the second splice 10b and the first splice 10a in a hot press mode, and the hot press plate 12 is used to carry heat and pressure to heat and melt the resin covering the parts of the second splice 10b and the first splice 10a by the hot press plate 12, so that the resin recovers the flowable property after the hot melt, and a relatively stable connection interface is formed between the second splice 10b and the splice of the first splice 10a under the pressure of the hot press plate 12 by utilizing the mutual flow and diffusion between the flowable resin, thereby realizing the continuity of the prepreg.

The surface tension of the resin is generated due to imbalance of intermolecular forces, and the interfacial tension between prepregs is an intermolecular force generated at the interface of two polymers. From the thermodynamic point of view, it is firstly the contact between two phases of the prepreg, and then the interdiffusion between macromolecular chains of two polymers, i.e. the local diffusion of the polymer molecules from one phase to the other phase, reduces the interfacial tension of the contact area, forms a connected bonding area, when the compatibility of two polymers is increased, the interdiffusion degree between the chain segments is increased, forms a fuzzy two-phase connection interface, and when the compatibility is complete, forms a stable homogeneous system, increases the bonding force of the connection interface, while the resin is the polymer, the prepreg connected with each other is two phases, the heat and pressure of the hot-pressing plate 12 are the conditions for increasing the compatibility of the polymers and increasing the interdiffusion degree between the chain segments.

It should be noted that, in the eighth step, the material supplementing mechanism 5 uses a vacuum suction device arranged in the hot melting box 53 as a suction power, sucks the cut waste material through the first suction pipeline 51 and the second suction pipeline 52, enters the hot melting box 53, heats the waste material through a heating device in the hot melting box 53 to form fluid resin, meanwhile, the short fiber filaments in the fluid resin are in a free state in the resin, when the feeding pipe 54 pumps the resin and the fiber filaments to the material supplementing opening 220, the resin is compatible with the resin at the first splicing head 10a and the second splicing head 10b, the short fiber filaments are interlaced with the fiber filaments on the first splicing head 10a and the second splicing head 10b along with the flow of the resin, one end of the short fiber is at the first splicing head 10a, the other end of the short fiber is at the material supplementing opening 220, or one end of the short fiber is at the second splicing head 10b, and the other end of the short fiber is at the material supplementing opening 220, the short fibers arranged in such a staggered manner can enhance the shearing and stretching strength of the joint of the first splicing head 10a and the second splicing head 10b by matching with resin.

The working process is as follows:

firstly, unreel the back level and carry backward to II departments of modification device through unreeling motor 62 drive on the unwinding device I with the prepreg 60 of lapping, the prepreg of carrying to II departments of modification device passes the stoving case that sets up in modification device II, modification device II carries out modification treatment through the heating to prepreg 60, prepreg 60 after the modification of II heats of modification device, if I departments of unwinding device do not unreel, then prepreg 60 horizontal transport to section device III, form the insulating piece after the cutting, prepreg 60 after the modification of II heats of modification device, if I departments of unwinding device unreel, then the head and the tail connecting portion of two sets of adjacent prepregs are connected through connecting device IV, it includes following step: step one, after the unreeling device I finishes unreeling a previous roll of prepreg 60, replacing the next roll of prepreg 60, losing traction after the previous roll of prepreg 60 is unreeled close to the unreeling device I, a clamping roller assembly 41 in a connecting device IV loses the tension of the prepreg and slides downwards along an optical axis 413, the clamping roller assembly 41 and a driving motor 421 are separated from a transmission connection state, and the previous roll of prepreg 60 stops conveying; step two, in the process that the clamping roller assembly 41 slides downwards along the optical axis 413, the lever 344 is extruded to drive the T-shaped locking block 341 to lift upwards, so that the locking and positioning of the driven gear 313 are released; step three, after the driven gear 313 is unlocked and positioned, the second connecting plate 311 is guided to turn over by the traction pneumatic spring 312, and the prepreg spread on the second connecting plate and the first cutter 321 are penetrated and cut to form a dovetail-shaped first splicing head 10 a; step four, synchronously with the step two and the step three, after the prepreg 60 of the next roll replaced on the unreeling device i is driven by the unreeling motor 62 to be conveyed onto the first connecting plate 22, after the prepreg 60 is sensed by the sensor 237, the unreeling motor 62 is controlled to stop rotating, and the pushing member 231 is synchronously controlled to extrude the first positioning rod 233 to fix the prepreg 60; after the prepreg on the second connecting plate 311 is cut, the overturning motor 314 drives the second connecting plate 311 to rotate reversely and reset, and the second cutter 322 cuts the prepreg flatly laid on the first connecting plate 22 in an inserting manner to form a dovetail-shaped second splicing head 10 b; step six, in synchronization with the steps three to five, the prepreg waste materials generated after the cutting by the first cutter 321 and the second cutter 322 are respectively sucked into the hot melting box 53 through the first suction pipeline 51 and the second suction pipeline 52 to be heated to form fluid; seventhly, after the second splicing head 10b and the first splicing head 10a which are formed by cutting are spliced in an inserting mode, the hot pressing plate 12 presses the second splicing head 10b and the first splicing head 10a downwards, and thermosetting resins on the second splicing head 10b and the first splicing head 10a are heated and then are mutually compatible to form connection; step eight, synchronous with the step seven, in the process of pressing down the hot pressing plate 12, the rotating gear 552 is driven to rotate by downward movement of the first rack 551, and then the feeding pipe 54 connected with the second rack 553 is driven to lift upwards and inserted into the feeding port 220 for feeding and supplying materials, so that the first splicing head 10a and the second splicing head 10b are compatibly connected; and step nine, after the second splicing head 10b is connected with the first splicing head 10a, the hot pressing plate 12 is reset, the unreeling motor 62 drives the prepreg 60 to turn over, the prepreg is tensioned again, the clamping roller assembly 41 is lifted and is in transmission connection with the driving motor 421 through tensioning of the prepreg, the unreeling motor 62 and the driving motor 421 synchronously rotate in the same direction, and the prepreg 60 is conveyed backwards and sequentially passes through the modification device II and the slicing device III.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a preparation equipment of preimpregnation material continuous type processing insulating piece, along the processing direction of delivery of preimpregnation material, includes unwinding device (I), modification device (II), section device (III) in proper order, its characterized in that, still including set up in connecting device (IV) between modification device (II) and section device (III), connecting device (IV) includes:

the connecting mechanism (1) comprises a connecting workbench (11) which is horizontally arranged, a hot pressing plate (12) which can be arranged in a lifting mode along the vertical direction is arranged right above the connecting workbench (11), heating wires are arranged in the hot pressing plate (12) along the length direction of the hot pressing plate, the hot pressing plate (12) is used for connecting the head and tail lap joints of adjacent prepregs, and unlocking blocks (121) are arranged at four corners of the hot pressing plate (12);

the positioning mechanism (2) is arranged in front of the connecting mechanism (1) along the processing and conveying direction of the prepreg, and comprises a mounting frame (21), a first connecting plate (22) and a first positioning assembly (23), the first connecting plate (22) is horizontally arranged on the mounting frame (21), one end, overlapped with the connecting workbench (11), of the first connecting plate (22) is a first tooth missing part (221) in a dovetail tooth shape, the first positioning assembly (23) is arranged right above the first connecting plate (22) along the processing and conveying direction of the prepreg, compresses and fixes the prepreg laid on the first connecting plate (22), and is clamped by the unlocking block (121) to release the fixation of the prepreg;

crop mechanism (3), crop mechanism (3) set up in the rear of coupling mechanism (1) along the processing direction of delivery of preimpregnation material, and it includes upset subassembly (31), cuts subassembly (32), second locating component (33) and spacing subassembly (34), upset subassembly (31) including turn over second connecting plate (311) that set up on frame (310), this second connecting plate (311) with the lapped one end of connecting workstation (11) is second scarce tooth portion (3111) that the forked tail dentate set up, its with first scarce tooth portion (221) interlude cooperation setting, and its with be provided with feed supplement mouth (220) between first scarce tooth portion (221), cut subassembly (32) including first cutter (321) and second cutter (322), first cutter (321) pass through frame (310) fixed set up in on the upset route of second connecting plate (311), the second cutting knife (322) is arranged on one side of the second tooth-lacking portion (3111) opposite to the prepreg and correspondingly penetrates and is matched with the first tooth-lacking portion (221), the second positioning components (33) are symmetrically arranged on two sides of the second connecting plate (311) in the width direction, compress and fix the prepreg laid on the second connecting plate (311), are clamped and released from fixing by the unlocking block (121), and are symmetrically arranged on two sides of a rotating shaft of the second connecting plate (311) and position and lock the second connecting plate (311) in a horizontal state;

the conveying mechanism (4) is arranged behind the head cutting mechanism (3) and comprises a clamping roller assembly (41) for clamping prepreg in a lifting mode and a driving assembly (42) for driving the prepreg to be conveyed, the clamping roller assembly (41) ascends and is arranged in a transmission connection mode with the driving assembly (42), the clamping roller assembly (41) descends and is extruded with the limiting assembly (34), and the limiting assembly (34) is released from positioning and locking the second connecting plate (311); and

the material supplementing mechanism (5) is arranged at the connecting workbench (11) and comprises a first suction pipeline (51), a second suction pipeline (52), a hot melting box (53), a feeding pipe (54) and a lifting assembly (55), the first suction pipeline (51) is connected with the first cutter (321) and the hot melting box (53) and is used for sucking the prepreg waste materials cut off by the first cutter (321), the second suction pipeline is connected with the connecting workbench (11) and the hot melting box (53) and is used for sucking the prepreg waste materials cut off by the second cutter (322), the hot melting box (53) is used for heating and melting the prepreg waste materials sucked by the first suction pipeline (51) and the second suction pipeline (52), the feeding pipe (54) is communicated with the hot melting box (53) and is vertically arranged under the connecting workbench (11) through the lifting assembly (55), and it feeds the gap between the first tooth-lack part (221) and the second tooth-lack part (3111).

2. The apparatus for manufacturing prepreg continuous processing insulation sheet according to claim 1, wherein the unwinding device (i) comprises:

the device comprises an unwinding support (61), wherein the unwinding support (61) is arranged in a U shape, and coiled prepreg (60) is erected on the unwinding support (61);

unreel motor (62), unreel motor (62) set up in unreel one side of support (61), it drives through the transmission gear subassembly prepreg (60) are rotatory.

3. The apparatus for manufacturing prepreg continuous processing insulation sheet according to claim 1, wherein the first positioning assembly (23) comprises:

the pushing piece (231) is arranged at the top of the first connecting plate (22) and is vertically pushed, and the pushing end of the pushing piece (231) is connected with a horizontally arranged pressing plate (232);

the first positioning rods (233) are symmetrically and vertically arranged at two ends of the first connecting plate (22) in the width direction, a first pressing block (2331) is arranged at the part of each first positioning rod (233) above the first connecting plate (22), a triangular first guide block (2332) is arranged at the part of each first positioning rod below the first connecting plate (22), and a first elastic piece (234) is arranged between each first pressing block (2331) and the first connecting plate (22) in a propping manner;

the second positioning rods (235), the second positioning rods (235) are symmetrically and horizontally arranged at two ends of the first connecting plate (22) in the width direction, are arranged in a one-to-one correspondence with the first positioning rods (233), one end of each second positioning rod, which faces the first guide block (2332), is provided with a triangular first clamping block (2351), one end, which faces away from the first guide block (2332), of the first clamping block (2351) is provided with a conical second clamping block (2352), the first clamping block (2351) is provided with a first clamping opening (2353) which is clamped with the first positioning rod (233), the inclined surface of the first clamping block (2351) is in sliding fit with the inclined surface of the first guide block (2332), the second clamping block (2352) is correspondingly clamped with the unlocking block (121), and the second positioning rods (235) are sleeved with second elastic pieces (236) which are arranged in a compression mode; and

the inductor (237), inductor (237) set up in first connecting plate (22), it detects the tip of the prepreg of unwinding device (I) output.

4. The apparatus for manufacturing prepreg continuous processing insulation sheet according to claim 1, wherein the inverting assembly (31) further comprises:

the traction pneumatic spring (312) is arranged on the rack (310), and the telescopic end of the traction pneumatic spring (312) is connected with the second connecting plate (311);

driven gears (313), wherein the driven gears (313) are symmetrically arranged on the rotating shafts on the two sides of the second connecting plate (311);

the overturning motor (314) is arranged on one axial side of a rotating shaft of the second connecting plate (311), a driving gear (315) is sleeved on a motor shaft of the overturning motor (314), and the driving gear (315) is in meshing transmission with the driven gear (313).

5. The apparatus for manufacturing prepreg continuous processing insulation sheet according to claim 1, wherein the second positioning assembly (33) comprises:

the top blocks (331) are symmetrically arranged on two sides of the second connecting plate (311) and fixedly connected with the rack (310);

the third positioning rods (332) are symmetrically and vertically arranged at two ends of the second connecting plate (311) in the width direction, rotate along with the second connecting plate (311) and are in extrusion contact with the top block (331), a second pressing block (3321) is arranged at the part of each third positioning rod (332) above the second connecting plate (311), a triangular second guide block (3322) is arranged at the part of each third positioning rod (332) below the second connecting plate (311), and a third elastic piece (333) is arranged between each second pressing block (3321) and the second connecting plate (311) in a butting manner; and

the fourth positioning rod (334) is symmetrically and horizontally arranged at two ends of the second connecting plate (311) in the width direction, and is arranged in one-to-one correspondence with the third positioning rod (332), a triangular third clamping block (3341) is arranged at one end of the third positioning rod (334) opposite to the second guide block (3322), a conical fourth clamping block (3342) is arranged at one end of the third clamping block (3341) opposite to the second guide block (3322), a second bayonet (3343) clamped with the third positioning rod (332) is arranged on the third clamping block (3341), an inclined surface of the third clamping block (3341) is in sliding fit with an inclined surface of the second guide block (3322), the fourth clamping block (3342) is correspondingly clamped with the unlocking block (121), and a fourth elastic piece (335) arranged in a compression mode is sleeved on the fourth positioning rod (334).

6. The apparatus for manufacturing prepreg continuous processing insulation sheet according to claim 4, wherein the limiting assembly (34) comprises:

the T-shaped locking block (341) is vertically arranged above the driven gear (313) in a sliding manner along a guide rod (342), and is clamped with the driven gear (313);

the fifth elastic piece (343), the said fifth elastic piece (343) is fixed on said guide arm (342) in a sleeving manner, it is compressed and set up, and it squeezes the said T-shaped locking block (341); and

the lever (344) is hinged to the rack (310), one end of the lever is sleeved with the T-shaped locking block (341) through a kidney-shaped groove (345), and the other end of the lever is arranged under the clamping roller assembly (41) in a swinging mode.

7. The apparatus for manufacturing prepreg continuous processing insulation sheet according to claim 1, wherein the clamping roller assembly (41) comprises:

the prepreg feeding device comprises clamping rollers (411), wherein the clamping rollers (411) are arranged in parallel in a rotating mode, and prepreg is conveyed between the two clamping rollers (411);

the cross guide blocks (412) are symmetrically arranged at two axial ends of the clamping roller (411), sleeved on the clamping roller (411) and vertically arranged in a lifting manner;

the optical axes (413) are symmetrically and vertically arranged at two axial ends of the clamping roller (411) and guide the vertical lifting of the cross-shaped guide block (412); and

the elastic pads (414) are sleeved at the bottom of the optical axis (413) and buffer the cross guide block (412).

8. The apparatus for manufacturing prepreg continuous processing insulation sheet according to claim 7, wherein the driving assembly (42) comprises:

the driving motor (421), the said driving motor (421) is set up on any side of the said nip roller (411) axially;

the gear transmission set (422) is arranged on the clamping roller (411), and the gear transmission set (422) and the driving motor (421) are both positioned on the same side of the clamping roller (411) in the axial direction;

the driving gear (423) is arranged on the driving motor (421), sleeved on a motor shaft of the driving motor (421) and in meshed transmission with the gear transmission group (422).

9. The apparatus for manufacturing prepreg continuous processing insulation sheet according to claim 1, wherein the lifting assembly (55) comprises:

the first racks (551) are vertically arranged on two sides of the width direction of the hot pressing plate (12) and are arranged along with the lifting of the hot pressing plate (12);

a rotary gear (552), wherein the rotary gear (552) is rotatably arranged at two sides of the connecting workbench (11) in the length direction and meshed with the first rack (551);

and a second rack (553), wherein the second rack (553) is vertically arranged at two sides of the length direction of the feeding pipe (54), is arranged at the other side of the rotating gear (552) relative to the first rack (551), and is meshed with the rotating gear (552).

10. A method for manufacturing an insulating sheet by continuously processing prepreg is characterized by comprising the following steps:

step a), unreeling, namely, unreeling the coiled prepreg (60) by driving of an unreeling motor (62) on an unreeling device (I) and horizontally conveying the unreeled prepreg to a modification device (II);

step b), modifying, namely enabling the prepreg conveyed to the modifying device (II) to pass through a drying box arranged on the modifying device (II), and modifying the prepreg (60) by heating the modifying device (II);

c) slicing, namely heating the modified prepreg (60) by using a modification device (II), and if the unreeling device (I) is not unreeled, horizontally conveying the prepreg (60) to a slicing device (III) to form an insulating sheet after cutting;

step d) connection, wherein the prepreg (60) after modification is heated by the modification device (II), if the unreeling device (I) unreels the prepreg, the head and tail connection parts of two adjacent groups of prepregs are connected by the connection device (IV), and the method comprises the following steps:

braking, namely replacing a next roll of prepreg (60) after the last roll of prepreg (60) is unreeled by the unreeling device (I), losing traction after the last roll of prepreg (60) is unreeled close to the unreeling device (I), enabling a clamping roller assembly (41) in the connecting device (IV) to lose the tensioning force of the prepreg and slide downwards along an optical axis (413), enabling the clamping roller assembly (41) to be separated from a driving connection state with a driving motor (421), and stopping conveying the last roll of prepreg (60);

step two), rotationally unlocking, wherein in the process that the clamping roller assembly (41) slides downwards along the optical axis (413), the T-shaped locking block (341) is driven to lift upwards by extruding the lever (344), and the locking and positioning of the driven gear (313) are released;

step three), cutting once, after the driven gear (313) is unlocked and positioned, turning over the second connecting plate (311) under the guidance of a traction pneumatic spring (312), and penetrating and cutting the prepreg spread on the second connecting plate and the first cutter (321) to form a dovetail-shaped first splicing head (10 a);

step four), conveying new materials, wherein in synchronization with the step two and the step three, after the prepreg (60) of the next roll replaced on the unreeling device (I) is driven by the unreeling motor (62) to be conveyed onto the first connecting plate (22), and is sensed by the sensor (237), the unreeling motor (62) is controlled to stop rotating, and the pushing member (231) is synchronously controlled to extrude the first positioning rod (233) to fix the prepreg (60);

step five), secondary cutting is carried out, after the prepreg on the second connecting plate (311) is cut, the overturning motor (314) drives the second connecting plate (311) to rotate reversely and reset, and the second cutter (322) cuts the prepreg which is laid on the first connecting plate (22) in an inserting manner to form a dovetail-shaped second splicing head (10 b);

step six), performing hot melting on waste materials, wherein the prepreg waste materials generated after the cutting of the first cutter (321) and the second cutter (322) are sucked into a hot melting box (53) through a first suction pipeline (51) and a second suction pipeline (52) respectively and are heated to form fluid;

step seven), splicing, namely, after the second splicing head (10b) and the first splicing head (10a) which are formed by cutting are spliced in an inserting way, a hot pressing plate (12) presses the second splicing head (10b) and the first splicing head (10a) downwards, so that thermosetting resin on the second splicing head (10b) and the first splicing head (10a) are heated and are mutually compatible to form connection;

step eight), supplementing and filling, wherein in a process synchronous with the step seven, in the process of pressing down the hot pressing plate (12), the first rack (551) downwards moves to drive the rotating gear (552) to rotate, so that the feeding pipe (54) connected with the second rack (553) is driven to upwards lift and inserted into the supplementing opening (220) for supplementing and supplying, and the first splicing head (10a) and the second splicing head (10b) are compatibly connected;

and step nine) tensioning adjustment is carried out, after the second splicing head (10b) is connected with the first splicing head (10a), the hot pressing plate (12) is reset, the unreeling motor (62) drives the prepreg (60) to overturn, so that the prepreg is tensioned again, after the clamping roller assembly (41) rises and is in transmission connection with the driving motor (421) through tensioning of the prepreg, the unreeling motor (62) and the driving motor (421) synchronously rotate in the same direction, and the prepreg (60) is conveyed backwards and sequentially passes through the modification device (II) and the slicing device (III).