CN217417673U

CN217417673U - Automatic cutting device of viscidity prepreg

Info

Publication number: CN217417673U
Application number: CN202221538898.4U
Authority: CN
Inventors: 何博阳; 范婷婷; 惠磊; 张少斐
Original assignee: Ningbo Turbulence Electronic Materials Co ltd
Current assignee: Ningbo Turbulence Electronic Materials Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-09-13
Anticipated expiration: 2032-06-20

Abstract

The utility model discloses an automatic cutting device of viscidity prepreg, include material feeding unit, cut the mechanism, spread cloth platform, granny rag device, from type membrane storage platform and shift the manipulator. The driven roller of the feeding device is provided with an air pressure adjustable driving cylinder, and the roller surfaces of the two rollers are provided with release layers. The cutting mechanism comprises a circular slicing knife, a guide beam with an anti-sticking layer on the surface and a cloth supporting beam. The cloth spreading platform is provided with a cloth pressing rod, the cloth pulling device is provided with a mechanical arm for clamping cloth, and the cloth pressing rod is used for pressing the bonding sheet to prevent the mechanical arm for clamping cloth from bonding with the bonding sheet. The transfer manipulator is used for transferring the release film on the release film storage platform to the adhesive sheet. This automatic cutting device adopts the form that the granny rag cut can cut the bonding sheet that possesses the cohesiveness, and through the selection and the design of key position material, avoids appearing gluing the roller, glues the sword, glues the condition of granny rag mould, shifts the problem of the mutual adhesion that appears when manipulator and setting up from type membrane storage platform can prevent that the bonding sheet from piling up simultaneously.

Description

Automatic cutting device of viscidity prepreg

Technical Field

The utility model relates to an automatic cutting device of prepreg, in particular to automatic cutting device that surface has viscidity prepreg (bonding sheet).

Background

The prepreg is also called PP sheet and bonding sheet, is a basic material in the copper-clad plate industry and PCB (printed circuit board) industry, and is used for producing the copper-clad plate or manufacturing a multilayer board. Prepregs are usually produced by compounding glass fiber cloth, glass fiber mat, paper, and the like as reinforcing materials with resin and fillers and then performing heat treatment. Prepregs are so named because the resin assumes a semi-cured state (B-stage) after heat treatment. The production of prepregs generally employs a continuous coating process, and the products produced are mostly rolls. Before the next step of use, the rolled prepreg needs to be cut into a corresponding rectangular shape and a specified size according to the manufacturing requirement of a copper-clad plate or the hot pressing requirement of a multilayer plate.

At present, an automatic prepreg cutting device in the prior art is often designed based on cutting requirements of epoxy resin prepregs or phenolic resin prepregs. The surface of the epoxy resin prepreg or the phenolic resin prepreg has higher hardness, the prepreg is brittle, and the surface has no viscosity at normal temperature. Therefore, the sample feeding is generally carried out by a simple cloth feeding method with a nip roller. However, for novel hydrocarbon prepreg or polytetrafluoroethylene prepreg, because the material is relatively soft, adopt above-mentioned technique and equipment to cut, often lead to defects such as cloth cover fold, cut skew.

For cutting soft roll-shaped materials, mature solutions exist in the technical field of garment machinery, and the soft roll-shaped materials are called as a granny rag cutting machine in related industries. The principle is that a cloth is pulled to a workbench through a cloth pulling device and then cut according to the set size. There are many patents, such as CN202626706U (an automatic cloth cutting machine), CN 103342251B (cloth drawing machine with mechanical arm cloth clamping mechanism), CN100458002C (cutting mechanism of cloth drawing machine), etc. However, when the cloth-pulling cutting machine in the prior art is used for cutting prepregs (bonding sheets) with sticky surfaces, the conditions of roller sticking, knife sticking edges and clamp sticking often occur, and the shutdown treatment of the equipment is caused seriously, so that the cutting efficiency is reduced. In addition, the existing cloth spreading machine simply stacks the cut cloth into a pile, and the situation that the upper layer and the lower layer are adhered together due to gravity and are difficult to separate occurs after the number of the stacked bonding sheets is large, so that the rejection rate of the material is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic cutting device to surface has viscidity prepreg to solve the roller that glues that appears among the prior art, glue the sword, glue the problem of anchor clamps, reduce equipment shutdown and maintain the frequency, improve the yield that bonding piece cut.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides an automatic cutting device of viscidity prepreg, includes material feeding unit, cuts the mechanism, spreads cloth platform, granny rag device, leaves type membrane storage platform and shifts the manipulator.

The feeding device comprises an unwinding roller with resistance adjustment, an unwinding roller, a floating roller set used for keeping unwinding tension constant and a pair of feeding clamping rollers at the tail end. The feeding clamping rollers comprise an upper feeding clamping roller and a lower feeding clamping roller, one of the two feeding clamping rollers is used as a driving roller, and the rest is used as a driven roller. The driven roller is provided with an air pressure adjustable driving cylinder to adjust the pressure between the two rollers, and the roller surfaces of the two rollers are provided with release layers.

As a preferred scheme, the two rollers are directly made of liquid silica gel and are liquid silica gel rollers, liquid silica gel release layers are formed on the surfaces of the two rollers, and the surfaces of the liquid silica gel rollers have good release capacity.

The cutting mechanism comprises a cutter mechanism and a cloth supporting mechanism. The cutter mechanism is a hob cutter mechanism and comprises a transverse guide rail, a cutting head with a slicing circular cutter, a rotary cutter disc and a motor, and a transmission and power device for driving the cutting head to slide along the guide rail. The circular cutting knife of the cutting head can realize cutting by the circular cutting knife. The cloth supporting mechanism comprises a guide beam fixed on the frame and a cloth supporting beam capable of moving up and down. And non-adhesive layers are arranged on the surfaces of the guide beam and the cloth supporting beam.

Preferably, the non-stick layer is a polytetrafluoroethylene layer sprayed on the surfaces of the guide beam and the joist, and has good non-stick performance.

The cloth paving platform comprises a platform, a cloth pressing rod and a power system, wherein the cloth pressing rod is used for pressing one end of the bonding sheet.

The cloth pressing rod can perform limited swing around the fixed shaft and is used for pressing or loosening the cut bonding sheet.

The cloth pressing rod is preferably made of polytetrafluoroethylene.

The cloth pulling device comprises a mechanical arm for clamping cloth, guide rails arranged on two sides of the cloth laying platform, and a transmission and power device for driving the mechanical arm for clamping the cloth to slide back and forth along the guide rails. The cloth pressing rod is used for pressing the bonding sheet when the manipulator is separated from the bonding sheet.

The pressure of the manipulator for clamping the cloth is adjustable, and a liquid silica gel gasket is arranged on one side of the manipulator for clamping the cloth, which is in contact with the bonding sheet.

After the cloth pulling device pulls the cut bonding sheet to a set position, the cloth pressing rod lightly presses one end of the bonding sheet, and the cloth clamping manipulator opens and translates backwards to be separated from the bonding sheet. The design can effectively avoid the condition that the bonding sheet is adhered to one side of the manipulator after the clamp of the manipulator is opened.

Set up in one side of shop's cloth platform from type membrane storage platform for place cut from the type membrane.

The transfer manipulator is a gantry type vacuum chuck manipulator and mainly comprises a gantry frame, a guide rail, a chuck type manipulator, an upper walking part, a lower walking part and a horizontal walking part. The horizontal traveling direction of the gantry type vacuum sucker manipulator is perpendicular to the traveling direction of the cloth pulling device on a cloth laying plane.

From type membrane storage platform and shift the effect of manipulator and be: after each bonding sheet is cut, the transfer manipulator transfers the release film on the storage platform to the bonding sheet, and the bonding sheet and the release film are stacked in staggered layers in sequence, so that adhesion is avoided when the bonding sheet is stacked.

Through above-mentioned technical scheme, compare with prior art, the utility model has the following obvious advantage:

(1) compare with traditional FR4 guillootine, the utility model discloses in adopted the form that the granny rag cut, more be suitable for soft materials such as hydrocarbon base prepreg, polytetrafluoroethylene base prepreg, can realize that the accuracy of this type of material cuts.

(2) Through the material selection and the structural design of a plurality of key parts, the conditions of roller sticking, knife sticking and cloth spreading clamp sticking when the bonding sheet is cut in the prior art are avoided, the frequency of shutdown maintenance is reduced, and the production efficiency is improved.

(3) The utility model discloses a combined use from type membrane storage platform, sucking disc manipulator and granny rag guillootine has realized stacking in turn from type membrane and bonding sheet, prevents the problem of the mutual adhesion that appears when bonding sheet piles up.

Drawings

Fig. 1 is a schematic front view of a main structure of an automatic bonding sheet cutting device according to an embodiment of the present invention.

Fig. 2 is a schematic side view of the main structure of the automatic bonding sheet cutting device according to the embodiment of the present invention, and for clarity, the cloth spreading device in the automatic cutting device is not shown.

Fig. 3 is a schematic view of the working state of the cloth pressing rod on the cloth spreading platform according to the embodiment of the present invention.

Fig. 4 is a schematic view of the working state of the cutting mechanism according to the embodiment of the present invention.

Fig. 5 is a schematic design view of a cloth clamping head of a manipulator for clamping cloth according to a preferred embodiment of the present invention.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention.

Referring to fig. 1 and 2, in order to provide a preferred embodiment of the present invention, an automatic cutting device for adhesive sheets is provided, the device includes: material feeding unit, cut mechanism, shop's cloth platform, granny rag device, from type membrane storage platform and transfer manipulator.

Wherein, material feeding unit includes: the device comprises an unwinding roller 11 with resistance adjustment, a stretching roller 12, a floating roller group 13 for keeping constant unwinding tension, and a pair of feeding clamping rollers arranged at the tail end of the feeding device.

The feeding nip rollers comprise an upper feeding nip roller 141 and a lower feeding nip roller 142, wherein the upper feeding nip roller 141 is a driving roller with adjustable rotating speed, and the lower feeding nip roller 142 is a driven roller.

To avoid the occurrence of the roll sticking condition, in this embodiment: the air pressure-adjustable air cylinders 143 are arranged on two sides of the lower feeding clamping roller 142, the air cylinders 143 can drive the lower feeding clamping roller 142 to lift, the pressure between the upper feeding clamping roller and the lower feeding clamping roller is adjusted through air pressure, and the phenomenon that the pressure between the feeding clamping roller and a bonding sheet is too large to cause roller bonding can be effectively avoided through adjusting and controlling the pressure between the feeding clamping rollers; meanwhile, the material of the feeding nip roller is particularly selected, in the embodiment, liquid silica gel is preferred, and the roller surface of the feeding nip roller adopting the liquid silica gel has better release capacity.

The cutting mechanism comprises a cutter mechanism and a cloth supporting mechanism. Wherein, the cutter mechanism is a hob cutter mechanism, which comprises a transverse guide rail 21, a cutting head 22 with a circular cutter, a rotary cutter head and a motor, and a transmission and power device (not shown in the figure) for driving the cutting head 22 to slide along the transverse guide rail 21. The cloth supporting mechanism comprises a guide beam 23 fixed on the frame and a cloth supporting beam 24 capable of moving up and down. The circular knife is made of stainless steel, and polytetrafluoroethylene non-stick layers are sprayed on the surfaces of the guide beam 23 and the cloth supporting beam 24.

The cutting mechanism adopts a circular knife cutting mode, proper tension is caused on the surface of the bonding sheet through the guide beam 23, the cloth supporting beam 24 and the cloth pulling device during cutting, the circular knife rotating at a high speed cuts the bonding sheet, the contact area of the bonding sheet with the guide beam and the support beam is small during cutting, and meanwhile, the surfaces of the guide beam and the support beam are subjected to non-stick layer treatment. The method can reduce the adhesion between the bonding sheet and the blade and between the bonding sheet and the cloth supporting mechanism as much as possible.

The cloth spreading platform comprises a platform 32, a cloth pressing rod 31 for pressing one end of the bonding sheet and a power system. The cloth pressing rod 31 can perform limiting swing around the fixed shaft and is used for pressing or loosening the bonding sheet after cutting, and the cloth pressing rod 31 is made of polytetrafluoroethylene materials, so that the surface bonding property is reduced.

The cloth pulling device comprises a manipulator 41 for clamping cloth, guide rails 42 arranged on two sides of the platform 32, and a transmission and power device 43 for driving the manipulator 41 for clamping cloth to slide back and forth along the guide rails 42. The pressure of the cloth clamping manipulator 41 is adjustable. A liquid silicone gasket is provided on the side of the cloth clamping manipulator 41 in contact with the bonding sheet to reduce the adhesiveness.

The cloth pressing rod 31 has the following functions: when the cloth pulling device pulls the cut bonding sheet to a set position, the cloth pressing rod 31 lightly presses one end of the bonding sheet, and the mechanical arm 41 for clamping the cloth opens and translates backwards to be separated from the bonding sheet. The design can effectively avoid the situation that the bonding sheet is adhered to one side of the manipulator after the clamp of the manipulator is opened.

Referring to fig. 2, a release film storing platform 53 is disposed at one side of the platform 32 for placing the cut release film.

The transfer manipulator is a gantry type vacuum chuck manipulator and mainly comprises a gantry frame, a first guide rail 52, a chuck type manipulator 51, an upper walking part, a lower walking part and a horizontal walking part (not shown). The horizontal traveling direction of the gantry type vacuum sucker manipulator is perpendicular to the traveling direction of the cloth pulling device on a cloth laying plane.

After each bonding sheet is cut, the sucker type mechanical arm 51 transfers the release film on the release film storage platform 53 to the bonding sheet, and the bonding sheet and the release film are stacked in a staggered layer mode in sequence, so that adhesion is avoided when the bonding sheet is stacked.

The basic working principle of the automatic cutting device is as follows: firstly, a prepreg roll enters a cutting mechanism through an unfolding roller 12, a floating roller group 13 and a pair of feeding clamping rollers, a cloth pulling device moves to one side of the cutting mechanism, and cloth clamping is carried out on one end of a bonding sheet by a cloth clamping clamp of a manipulator 41; secondly, the pressure of the upper feeding pinch roller and the lower feeding pinch roller is reduced to a proper pressure, the driving roller rotates, and meanwhile, the cloth spreading mechanism spreads the cloth to a set position; thirdly, the pressure of the upper feeding nip roller and the lower feeding nip roller is increased to a proper pressure, the driving roller is locked, the cutting head 22 moves along the transverse guide rail 21, and the bonding sheet is cut by using the circular cutting knife; fourthly, the cloth pulling device continues to move to one side, the cut prepregs are horizontally pulled to the limited position of the cloth paving platform, and meanwhile, the cutting head 22 drives the round slicing knife to return to the initial position along the transverse guide rail 21; fifthly, pressing one end of the prepreg by the cloth pressing rod 31, opening a cloth clamping clamp of the cloth clamping manipulator 41, moving the cloth pulling device backwards, and separating the clamp from the bonding sheet; and seventhly, opening the cloth pressing rod 31, and transferring the cut release film to a positioned cloth paving platform bonding sheet from the release film storage platform 53 by the gantry type vacuum chuck manipulator. And repeating the steps one to seven to realize the accurate automatic cutting of the viscous prepreg and the interval stacking of the viscous prepreg and the release film.

Fig. 3 is a schematic diagram showing a design structure of the cloth pressing bar 31 according to a preferred embodiment of the present invention. The working principle of the cloth pressing rod 31 in this embodiment is as follows: the cloth pressing lever 31 reciprocates around a fixed position and has two operating states, a first operating state (S1) is an open state, and a second operating state (S2) is a cloth pressing state. In one embodiment of the invention, the cloth pressing bar 31 is driven using a torque-responsive servomotor. As shown in the figure, as the thickness of the stacked pile increases (the dotted line indicates the pile height), the cloth pressing rod 31 can still perform the cloth pressing function.

Fig. 4 is a main structural diagram of a cutting mechanism in a preferred embodiment of the present invention, and the working principle thereof is as follows: the joist beam 24 is movable up and down in the illustrated high position state S1 and low position state S2, respectively. When the cloth spreading device moves to the right of the guide beam 23 as shown in the figure, the cloth supporting beam 24 is in a low position state S2, and the manipulator 41 grips the stub bar on the right side of the guide beam 23 and spreads the stub bar to the right. When cutting begins, the cloth supporting beam 24 is lifted to a high position state S1, and the auxiliary circular knife performs effective cutting. In one embodiment of the invention, the joist beams 24 are driven using pneumatic cylinders.

Referring to fig. 5, a schematic structural diagram of a cloth clamping manipulator 41 according to a preferred embodiment of the present invention is shown, wherein the manipulator is a single component of a group of manipulators, and comprises an upper clamp 411, a lower clamp 412, and a parallel pneumatic finger cylinder 413. Where the upper jig 411 and the lower jig 412 are in contact with the adhesive sheet, a liquid rubber pad 414 is covered.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the present invention be limited to the specific embodiments shown and described. For those skilled in the art, without departing from the spirit of the present invention, several simple deductions or substitutions may be made, which should be considered as falling within the protection scope of the present invention.

Claims

1. The utility model provides an automatic cutting device of viscidity prepreg which characterized in that: the cloth spreading and cutting machine comprises a feeding device, a cutting mechanism, a cloth spreading platform, a cloth pulling device, a release film storage platform and a transferring manipulator;

the feeding device comprises an upper feeding clamping roller and a lower feeding clamping roller, one of the two feeding clamping rollers is selected as a driving roller, the rest is a driven roller, the driven roller is provided with an air pressure adjustable driving cylinder to adjust the pressure between the two rollers, and the roller surfaces of the two rollers are provided with release layers;

the cutting mechanism comprises a cutter mechanism and a cloth supporting mechanism, the cutter mechanism is provided with a circular slicing cutter to realize cutting of the circular cutter, the cloth supporting mechanism comprises a guide beam fixed on the rack and a cloth supporting beam capable of moving up and down, and non-adhesive layers are arranged on the surfaces of the guide beam and the cloth supporting beam;

the cloth spreading platform is provided with a cloth pressing rod, the cloth pulling device is provided with a manipulator for clamping cloth, and the cloth pressing rod is used for pressing the bonding sheet when the manipulator for clamping cloth is separated from the bonding sheet;

the transfer manipulator is used for transferring the release film on the release film storage platform onto the adhesive sheet.

2. The automatic cutting device of claim 1, wherein: the upper feeding clamping roller and the lower feeding clamping roller are liquid silica gel rollers, and liquid silica gel release layers are formed on the surfaces of the two rollers.

3. The automatic cutting device of claim 1, wherein: the non-stick layer is a polytetrafluoroethylene layer sprayed on the surfaces of the guide beam and the cloth supporting beam.

4. The automatic cutting device of claim 1, wherein: the cloth pressing rod can perform limited swing around the fixed shaft and is used for pressing or loosening the cut bonding sheet.

5. The automatic cutting apparatus of claim 4, wherein: the cloth pressing rod is a polytetrafluoroethylene rod and is used for pressing one end of the bonding sheet.

6. The automatic cutting device of claim 1, wherein: press from both sides for the cloth manipulator be pressure adjustable formula manipulator, just press from both sides for the cloth manipulator and be equipped with liquid silica gel gasket with the one side of bonding sheet contact.

7. The automatic cutting device of claim 1, wherein: the transfer manipulator is a gantry type vacuum chuck manipulator and comprises a gantry frame, a guide rail, a chuck type manipulator, an upper walking part, a lower walking part and a horizontal walking part, wherein the horizontal walking direction of the gantry type vacuum chuck manipulator is perpendicular to the walking direction of the cloth pulling device on a cloth laying plane.