CN103624838B - A kind of prepreg cutting means and cutting method - Google Patents
A kind of prepreg cutting means and cutting method Download PDFInfo
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- CN103624838B CN103624838B CN201310521065.6A CN201310521065A CN103624838B CN 103624838 B CN103624838 B CN 103624838B CN 201310521065 A CN201310521065 A CN 201310521065A CN 103624838 B CN103624838 B CN 103624838B
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Abstract
The present invention discloses a kind of prepreg cutting means, it is characterized in that: comprise the heating unit for heating prepreg, before being arranged on heating unit, banded prepreg can be sent into the feeding unit of heating unit, crossbearer on feeding unit and heating unit before cut away section and crossbearer in the rear cut away section of heating unit end; Described feeding unit is provided with transmission mechanism A, and described heating unit is provided with transmission mechanism B; Also comprise the control unit controlling described feeding unit, heating unit, front cut away section, the operation of rear cut away section.After in the present invention, banded prepreg is sent into heating unit by feeding unit, be cut into prepreg finished product by rear cut away section at once, make banded prepreg cropped under comparatively suitable condition, thus the prepreg finished product the smooth of the edge made by ensureing is without burr.
Description
Technical field
The present invention relates to a kind of wiring board production technical field, be specifically related to a kind of prepreg cutting means and cutting method.
Background technology
Recently, prepreg is widely used in circuit-board processes.Prepreg (also known as resin fiberglass cloth or glass fiber resin plate) is primarily of resin and enhancement mode material composition.Enhancement mode material comprises the polytype such as glass fabric, composite.Current prepreg is by the sheeting obtained after treated enhancement mode material (such as, glass fabric) impregnating resin.What provide in the market is significantly banded prepreg mostly; rectangular strip shape prepreg, according to the circuit board size of required making, is cut into less rectangle prepreg finished product with the size of coincident circuit plate along the direction being parallel to its four limit by usual meeting respectively.Because banded prepreg material is comparatively firmly crisp, if directly carrying out cutting very easily makes it cracked.Common way banded prepreg is put into oven heat make it soften; row cuts again; because heating process is difficult to control, banded prepreg usually can be caused to occur subregion over-heating because heating inequality and burn or the requirement cut can not be reached because of underheat.In addition the banded prepreg after softening is softer because of its quality, and existing cutting apparatus cannot be adopted to cut, and can only rely on manually to complete to cut operation.This way efficiency is low and precision not enough, also easy because of heating process with cut inter process every oversize and cause banded prepreg again to harden causing product to occur burr, breach.
Summary of the invention
In view of this, the invention provides the prepreg cutting apparatus that a kind of high efficiency, high accuracy, incision of product are smooth.
Object of the present invention is achieved through the following technical solutions:
A kind of prepreg cutting means, comprise the heating unit for heating prepreg, before being arranged on heating unit, banded prepreg can be sent into the feeding unit of heating unit, crossbearer on feeding unit and heating unit before cut away section and crossbearer in the rear cut away section of heating unit end; Described feeding unit is provided with transmission mechanism A, and described heating unit is provided with transmission mechanism B; Also comprise the control unit controlling described feeding unit, heating unit, front cut away section, the operation of rear cut away section.
Banded prepreg is cut into prepreg finished product by rear cut away section after being sent into heating unit by feeding unit at once, make banded prepreg cropped under comparatively suitable condition, thus the prepreg finished product the smooth of the edge made by ensureing is without burr.In addition, inventor finds under study for action, through heating banded prepreg hardening by cooling, again carry out heating and cut, obtained product is frangible, edge crinosity thorn and breach.Therefore feeding unit of the present invention and cut unit and be respectively equipped with independently transmission mechanism for conveying band prepreg, feeding unit and the crossbearer of going back cut between unit have front cut away section simultaneously.When stopping producing, the transmission mechanism A of feeding unit stops banded prepreg to send into heating unit, and simultaneously, banded prepreg will cut off at feeding unit and heating unit intersection by cut away section.The banded prepreg at front cut away section rear has continued under the drive of transmission mechanism B process such as heating, cut, and the prepreg in front cut away section front then can be recovered, and avoids because being caused hydraulic performance decline by heating.In addition, the banded prepreg of certain model needs to heat the long period before cutting.When processing this kind of material, also can control transmission mechanism B with slower speed rates material, make it be heated for a long time.Now also can front cut away section be also used to cut off banded prepreg, to reach energy-conservation and object that is that avoid prepreg to pile up in heating unit by closing transmission mechanism A.Aforesaid operations all automatically completes under the control of described control unit.Described control unit can adopt any one automaton existing.Can according to the transmission speed of the parameter accurate controls transfer mechanism A preset and transmission mechanism B, the opportunity, heating-up temperature etc. that start the front cut away section of closedown and rear cut away section by control unit, realization cuts process whole-course automation and precise controlling, thus enhances productivity and cut precision.Simultaneously to the fusing point of control unit input prepreg, control unit can temperature in the transmission speed of Lookup protocol transmission mechanism B and heating unit, accurately to control the degree of heat to prepreg.
Further, described front cut away section comprises the front sensing mechanism that is arranged on and transmission mechanism A can responds to banded prepreg and is arranged on before above transmission mechanism A and cuts cylinder, is arranged on the front cutting knife that cylinder piston rod can cut up and down motion;
Described rear cut away section comprises the rear sensing mechanism that is arranged on and transmission mechanism B can responds to banded prepreg inlet amount and is arranged on after above transmission mechanism B and cuts cylinder, is arranged on the rear cutting knife that cylinder piston rod can cut up and down motion.
Current sensor mechanism sense to have below it material by time, trigger control unit is started heating unit material is heated, thus solve heating unit and be in normally open and expend the energy.Rear sensing mechanism accurately can measure the banded prepreg length flowed out from heating unit, and when this numerical value reaches default prepreg finished product length, after trigger control unit being controlled, cutting knife cuts banded prepreg.Control unit by control described before cut cylinder or after cut the operation of cylinder, what realize controlling front cutting knife and rear cutting knife cuts opportunity.Described front sensing mechanism and rear sensing mechanism can adopt any one material induction installation to realize.
Transmission mechanism A and transmission mechanism B respectively comprises a delivery roll group, described delivery roll group comprises active transmission roller group and to be arranged at above active transmission roller group and driven delivery roll group parallel with it, and described active transmission roller and driven delivery roll group comprise respectively and be multiplely in same plane and tangent delivery roll; Described transmission mechanism A and transmission mechanism B also comprises a motor respectively, and described motor is in transmission connection by one end of driving belt and the arbitrary delivery roll of active transmission roller group; The delivery roll group front end of described transmission mechanism B connects with the delivery roll group end of transmission mechanism A.
Motor is in transmission connection by one end of driving belt and the arbitrary delivery roll of active transmission roller group, during electric motor starting, this delivery roll is driven to rotate by driving belt, this delivery roll drives again and rotates in the same direction with the delivery roll in whole active transmission roller group, thus the material be positioned in active transmission roller group is advanced.This structure has the advantages such as energy consumption is low, structure simple, easy to maintenance.Effect mainly fixing, the directing material advance of driven delivery roll group, prevents material from piling up in active transmission roller group.In addition, the driven delivery roll in heating unit also has the effect on the banded prepreg that to be passed to by even heat and to contact with it, prevents banded prepreg from local occurring because being heated inequality and to burn or softening not enough.Driven delivery roll can also compress banded prepreg, prevents its deformation because of harmomegathus in heating process.
The heating component that described heating unit also comprises a heating clamber and is arranged in heating clamber; The delivery roll group of described transmission mechanism B is all or part of to be arranged in heating clamber, and the rear and front end of described heating clamber is respectively equipped with for prepreg by, equal with transmission mechanism B delivery roll group prepreg passage.
Described heating component comprises the quartz heating-pipe of controllable temperature above delivery roll group that comprise several parallel is arranged in heating clamber, is also provided with the infrared-reflecting layers of convex spherical above described quartz heating-pipe; The delivery roll group part of described transmission mechanism B is arranged in heating clamber and refers to that the position that the delivery roll group front end of transmission mechanism B accounts for overall length 60%-80% is arranged in heating clamber.
Quartz heating-pipe can produce the material of infrared ray to heating clamber and heat, and has the advantages such as the efficiency of heating surface is high, homogeneous heating.The present invention is also provided with the infrared-reflecting layers of convex spherical above quartz heating-pipe, the infrared ray that quartz heating-pipe produces can be reflexed to banded prepreg equably, improve homogeneous heating sex chromosome mosaicism further.Cannot be cut off by rear cutting knife and easily produce burr for preventing heating prepreg excessively, the position that the delivery roll group front end of transmission mechanism B accounts for overall length 60%-80% be arranged in heating clamber, and remainder is then arranged on heating clamber rear portion.Banded prepreg after oven heats is disposed slightly can be done to lower the temperature at heating clamber rear and be cut by rear cutting knife, ensures that final obtained prepreg finished product flush edge is smooth.
Further, also comprise rewinding unit, it comprises the material receiving roller group, the rewinding motor driving material receiving roller group and the receiving vat being arranged on material receiving roller group rear that connect with transmission mechanism B active transmission roller group end; Described feeding unit also comprises the feeding mechanism for storing banded prepreg being arranged on transmission mechanism front, and it comprises frame and is arranged on the rotatable fixed axis for winding of band-type prepreg in frame.
Further, described quartz heating-pipe is by being arranged in heating clamber according to the mechanical arm of control unit instruction campaign, and the delivery roll of described delivery roll group selects stainless steel to make.
Mechanical arm can control unit instruction drive quartz heating-pipe at heating indoor moving, coordinates the delivery roll with the stainless steel of high thermal conductance, further increases the heating uniformity to banded prepreg.
The present invention provides a kind of method utilizing described prepreg cutting means cutting prepreg simultaneously, comprises following operation:
Banded prepreg is wound on fixed axis, and its end is put into the driven delivery roll group of feeding unit and the gap of active transmission roller group; The softening temperature of semi-solid preparation finished product length and prepreg is preset to control unit;
Use the driven by motor active transmission roller group of control unit controls transfer mechanism A to order about banded prepreg to advance in feed mechanism;
When banded prepreg moves to below front sensing mechanism, front sensing mechanism trigger control unit starts the active transmission roller group of the driven by motor transmission mechanism B of transmission mechanism B, is that banded prepreg is to advance with its speed that pace is equal in transmission mechanism A;
When banded prepreg moves to below front sensing mechanism, the driven delivery roll group in heating clamber is heated to prepreg and softens by front sensing mechanism trigger control unit startup simultaneously heating component;
When banded prepreg is below sensing mechanism later, the rewinding motor that rear sensing mechanism trigger control unit starts rewinding unit drives material receiving roller group to drive banded prepreg to advance, the banded prepreg length that simultaneously, sensing mechanism will be measured below cutting knife later, when this length reaches default prepreg finished product length, after control unit starts, cutting knife falls, and cuts out prepreg finished product; Prepreg finished product enters receiving vat through the drive of material receiving roller group and stacks;
When stopping producing, stopped to heating unit conveying band prepreg by control unit controls transfer mechanism A; Simultaneously, prepreg cuts off from feeding unit and heating unit joint by front cutting knife under the promotion of front air cylinder, the banded prepreg at front cutting knife rear then moves on, until it is all made into prepreg finished product and after entering receiving vat, heating unit, rear cut away section, rewinding unit are closed successively.
Driven delivery roll group heating prepreg in heating clamber softens and refers to that the driven delivery roll group in heating clamber is heated to prepreg at mechanical arm horizontal hunting and softens by quartz heating-pipe by described heating component.
The present invention, relative to prior art, has following beneficial effect:
1. after in the present invention, banded prepreg is sent into heating unit by feeding unit, be cut into prepreg finished product by rear cut away section at once, make banded prepreg cropped under comparatively suitable condition, thus the prepreg finished product the smooth of the edge made by ensureing is without burr; In addition the present invention is provided with independently transmission mechanism respectively at heating unit and feeding unit; can stop when shutting down continuing to feed intake to heating unit and the prepreg dropping into heating unit can be completed processing, avoiding prepreg and suffer heating for multiple times and produce hydraulic performance decline, not easily the problem such as to cut.
2. motor of the present invention is in transmission connection by one end of driving belt and the arbitrary delivery roll of active transmission roller group, during electric motor starting, this delivery roll is driven to rotate by driving belt, this delivery roll drives again and rotates in the same direction with the delivery roll in whole active transmission roller group, thus the material be positioned in active transmission roller group is advanced, this structure has the advantages such as energy consumption is low, structure simple, easy to maintenance; In addition, the delivery roll be made up of stainless steel material in heating unit also has the effect on the banded prepreg that to be passed to by even heat and to contact with it, prevents banded prepreg from local occurring because being heated inequality and to burn or softening not enough; Driven delivery roll can also compress banded prepreg, prevents its deformation because of harmomegathus in heating process.
3. present invention employs control unit and sensing mechanism, realize automated production prepreg being cut to production process, ensureing in production process can to the Precise control of temperature, speed, cutoff length, contribute to improving produce the quality of prepreg.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
The present invention to be described in further detail below in conjunction with accompanying drawing and embodiment for the ease of it will be appreciated by those skilled in the art that:
Embodiment 1
The present embodiment provides a kind of prepreg cutting means for cutting containing ceramic material, comprise the heating unit for heating prepreg as shown in Figure 1, before being arranged on heating unit, banded prepreg can be sent into the feeding unit of heating unit, crossbearer on feeding unit and heating unit before cut away section and crossbearer in the rear cut away section of heating unit end; Described feeding unit is provided with transmission mechanism A, and described heating unit is provided with transmission mechanism B; Also comprise the control unit controlling described feeding unit, heating unit, front cut away section, the operation of rear cut away section.
Described front cut away section comprises the front sensing mechanism that is arranged on and transmission mechanism A can responds to banded prepreg and is arranged on before above transmission mechanism A and cuts cylinder 11, is arranged on the front cutting knife 12 that cylinder piston rod can cut up and down motion;
Described rear cut away section comprises the rear sensing mechanism that is arranged on and transmission mechanism B can responds to banded prepreg inlet amount and is arranged on after above transmission mechanism B and cuts cylinder 21, is arranged on the rear cutting knife 22 that cylinder piston rod can cut up and down motion.
Transmission mechanism A comprises a delivery roll group, and described delivery roll group comprises active transmission roller group and is arranged at driven delivery roll group above active transmission roller group and parallel with it, and described active transmission roller comprises 8 and is in same plane and tangent active transmission roller 31; Described passive delivery roll group comprises 8 and is in same plane and tangent passive delivery roll 32; Described transmission mechanism A also comprises a motor 33, and described motor 33 is in transmission connection by one end of driving belt and active transmission roller group first delivery roll.
Transmission mechanism B comprises a delivery roll group, and described delivery roll group comprises active transmission roller group and is arranged at driven delivery roll group above active transmission roller group and parallel with it, and described active transmission roller comprises 16 and is in same plane and tangent active transmission roller; Described passive delivery roll group comprises 8 and is in same plane and tangent passive delivery roll; Described transmission mechanism B also comprises a motor 34, and described motor 34 is in transmission connection by one end of driving belt and active transmission roller group the 3rd delivery roll;
The delivery roll group front end of described transmission mechanism B connects with the delivery roll group end of transmission mechanism A.
The heating component that described heating unit also comprises a heating clamber 4 and is arranged in heating clamber 4; The long 80cm of described heating clamber; Front 10 active transmission rollers and the passive delivery roll of the delivery roll group of described transmission mechanism B are arranged in heating clamber, and the rear and front end of described heating clamber is respectively equipped with for prepreg by, equal with transmission mechanism B delivery roll group prepreg passage.
Described heating component comprises the quartz heating-pipe of controllable temperature above delivery roll group that 3 transverse directions are set in parallel in heating clamber, is also provided with the infrared-reflecting layers of convex spherical above described quartz heating-pipe.
Also comprise rewinding unit, it receiving vat 53 comprising the material receiving roller group 51 connected with transmission mechanism B active transmission roller group end, the rewinding motor 52 driving material receiving roller group 51 and be arranged on material receiving roller group 51 rear; Described feeding unit also comprises the feeding mechanism for storing banded prepreg being arranged on transmission mechanism front, and it comprises frame 61 and is arranged on the rotatable fixed axis 62 for winding of band-type prepreg in frame 61.
Described quartz heating-pipe is by being arranged in heating clamber according to the mechanical arm of control unit instruction campaign, and the delivery roll of described delivery roll group selects stainless steel to make.
Described control unit can select any one automatic control equipment.The present embodiment selects one with the PLC of input keyboard and screen as described control unit.
Embodiment 2
The present embodiment provides a kind of method utilizing the cured sheets cutting means of embodiment 1 to cut ceramic prepreg.
Comprise following operation:
Banded prepreg is wound on fixed axis 62, and its end is put into the driven delivery roll group of feeding unit and the gap of active transmission roller group; The temperature preset semi-solid preparation finished product length to control unit and be enough to make prepreg softening.The softening temperature of different prepreg materials is different, and the softening temperature as ceramic prepreg is 30-40 DEG C, and the softening time is 20 seconds; In the present embodiment, banded prepreg need be cut into the wide prepreg finished product of 2cm, prepreg softening temperature is 35 DEG C.
Use the motor 33 of control unit controls transfer mechanism A to drive active transmission roller group to order about banded prepreg to advance in feed mechanism;
When banded prepreg moves to below front sensing mechanism, the motor 34 of front sensing mechanism trigger control unit startup transmission mechanism B drives the active transmission roller group of transmission mechanism B, is that banded prepreg is to advance with its speed that pace is equal in transmission mechanism A.
When banded prepreg moves to below front sensing mechanism, the driven delivery roll group in heating clamber 4 is heated to prepreg and presents soft state by front sensing mechanism trigger control unit startup simultaneously heating component;
Pace on transmission mechanism B is that in (heating clamber length × softening time ÷ cutoff length) cm/s the present embodiment, the pace of banded prepreg on transmission mechanism B is 800cm/s, and the temperature in heating clamber is 45 DEG C.
When banded prepreg is below sensing mechanism later, the rewinding motor 52 that rear sensing mechanism trigger control unit starts rewinding unit drives material receiving roller group to drive banded prepreg to advance, the banded prepreg length that simultaneously, sensing mechanism will be measured below cutting knife later, when this length reaches 20cm, after control unit starts, cutting knife 22 falls, and cuts out prepreg finished product; Prepreg finished product enters receiving vat 53 through material receiving roller group 51 drive and stacks;
When stopping producing, stopped to heating unit conveying band prepreg by control unit controls transfer mechanism A; Simultaneously, prepreg cuts off from feeding unit and heating unit joint by front cutting knife 12 under the promotion of front air cylinder 11, the banded prepreg at front cutting knife rear then moves on, until it is all made into prepreg finished product and after entering receiving vat 53, heating unit, rear cut away section, rewinding unit are closed successively.
Driven delivery roll group in heating clamber is heated to prepreg and softens and refer to that the driven delivery roll group in heating clamber is heated to prepreg at mechanical arm horizontal hunting and softens by quartz heating-pipe by heating component.
Be more than wherein specific implementation of the present invention, it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these apparent replacement forms all belong to protection scope of the present invention.
Claims (8)
1. a prepreg cutting means, it is characterized in that: comprise the heating unit for heating prepreg, before being arranged on heating unit, banded prepreg can be sent into the feeding unit of heating unit, crossbearer on feeding unit and heating unit before cut away section and crossbearer in the rear cut away section of heating unit end; Described feeding unit is provided with transmission mechanism A, and described heating unit is provided with transmission mechanism B; Also comprise the control unit controlling described feeding unit, heating unit, front cut away section, the operation of rear cut away section;
Described front cut away section comprises the front sensing mechanism that is arranged on and transmission mechanism A can responds to banded prepreg and is arranged on before above transmission mechanism A and cuts cylinder, is arranged on the front cutting knife that cylinder piston rod can cut up and down motion;
Described rear cut away section comprises the rear sensing mechanism that is arranged on and transmission mechanism B can responds to banded prepreg inlet amount and is arranged on after above transmission mechanism B and cuts cylinder, is arranged on the rear cutting knife that cylinder piston rod can cut up and down motion.
2. prepreg cutting means according to claim 1, it is characterized in that: transmission mechanism A and transmission mechanism B respectively comprises a delivery roll group, described delivery roll group comprises active transmission roller group and to be arranged at above active transmission roller group and driven delivery roll group parallel with it, and described active transmission roller and driven delivery roll group comprise respectively and be multiplely in same plane and tangent delivery roll; Described transmission mechanism A and transmission mechanism B also comprises a motor respectively, and described motor is in transmission connection by one end of driving belt and the arbitrary delivery roll of active transmission roller group; The delivery roll group front end of described transmission mechanism B connects with the delivery roll group end of transmission mechanism A.
3. prepreg cutting means according to claim 2, is characterized in that: the heating component that described heating unit also comprises a heating clamber and is arranged in heating clamber; The delivery roll group of described transmission mechanism B is all or part of to be arranged in heating clamber, and the rear and front end of described heating clamber is respectively equipped with for prepreg by, equal with transmission mechanism B delivery roll group prepreg passage.
4. prepreg cutting means according to claim 3, it is characterized in that: described heating component comprises the quartz heating-pipe of controllable temperature above delivery roll group that comprise several parallel is arranged in heating clamber, is also provided with the infrared-reflecting layers of convex spherical above described quartz heating-pipe; The delivery roll group part of described transmission mechanism B is arranged in heating clamber and refers to that the position that the delivery roll group front end of transmission mechanism B accounts for overall length 60%-80% is arranged in heating clamber.
5. prepreg cutting means according to claim 4, it is characterized in that: also comprise rewinding unit, it comprises the material receiving roller group, the rewinding motor driving material receiving roller group and the receiving vat being arranged on material receiving roller group rear that connect with transmission mechanism B active transmission roller group end; Described feeding unit also comprises the feeding mechanism for storing banded prepreg being arranged on transmission mechanism front, and it comprises frame and is arranged on the rotatable fixed axis for winding of band-type prepreg in frame.
6. prepreg cutting means according to claim 5, is characterized in that: described quartz heating-pipe is by being arranged in heating clamber according to the mechanical arm of control unit instruction campaign, and the delivery roll of described delivery roll group selects stainless steel to make.
7. adopt a method for prepreg cutting means cutting prepreg according to claim 6, comprise following operation:
Banded prepreg is wound on fixed axis, and its end is put into the driven delivery roll group of feeding unit and the gap of active transmission roller group; The softening temperature of semi-solid preparation finished product length and prepreg is preset to control unit;
Use the driven by motor active transmission roller group of control unit controls transfer mechanism A to order about banded prepreg to advance in feed mechanism;
When banded prepreg moves to below front sensing mechanism, front sensing mechanism trigger control unit starts the active transmission roller group of the driven by motor transmission mechanism B of transmission mechanism B, is that banded prepreg is to advance with its speed that pace is equal in transmission mechanism A;
When banded prepreg moves to below front sensing mechanism, the driven delivery roll group in heating clamber is heated to prepreg and softens by front sensing mechanism trigger control unit startup simultaneously heating component;
When banded prepreg is below sensing mechanism later, the rewinding motor that rear sensing mechanism trigger control unit starts rewinding unit drives material receiving roller group to drive banded prepreg to advance, the banded prepreg length that simultaneously, sensing mechanism will be measured below cutting knife later, when this length reaches default prepreg finished product length, after control unit starts, cutting knife falls, and cuts out prepreg finished product; Prepreg finished product enters receiving vat through the drive of material receiving roller group and stacks;
When stopping producing, stopped to heating unit conveying band prepreg by control unit controls transfer mechanism A; Simultaneously, prepreg cuts off from feeding unit and heating unit joint by front cutting knife under the promotion of front air cylinder, the banded prepreg at front cutting knife rear then moves on, until it is all made into prepreg finished product and after entering receiving vat, heating unit, rear cut away section, rewinding unit are closed successively.
8. a method for prepreg cutting means cutting prepreg according to claim 7, is characterized in that: the driven delivery roll group heating prepreg in heating clamber softens and refers to that the driven delivery roll group in heating clamber is heated to prepreg at mechanical arm horizontal hunting and softens by quartz heating-pipe by described heating component.
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CN113715180A (en) * | 2021-09-09 | 2021-11-30 | 石光明 | Heating cutting method for soft porcelain modified inorganic powder composite building facing sheet |
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