KR102465428B1 - Apparatus for producing plate typed preform using needle punching measurement - Google Patents

Abstract

The present invention discloses a flat preform manufacturing apparatus using a needle punching machine. Specifically, a support frame including a table-shaped horizontal support and a vertical support vertically installed in the middle of the horizontal support; Driving means including a driving motor provided on the upper end of the vertical support and a crankshaft rotationally driven by the driving motor; a sheet supply unit for continuously supplying carbon fiber sheets to the sheet transfer unit through a pair of supply rollers that rotate in conjunction with the driving means; a sheet transfer unit installed to be movable horizontally on the upper surface of the horizontal support and intermittently forward-transporting the stacked carbon fiber sheets supplied from the sheet supply unit and backward-transfer again in conjunction with the driving means; a needle punching machine for punching the carbon fiber sheet mounted on the sheet transfer unit with a plurality of needles when the sheet transfer unit stops while moving up and down in association with the driving means; A sheet height adjusting unit for adjusting the height of the horizontal support according to the height of the carbon fiber sheet stacked on the sheet transfer unit while supporting the horizontal support, and when the punching is completed by a certain length, the sheet supply unit It is characterized in that the carbon fiber sheet is cut by cutting the carbon fiber sheet, the sheet transfer unit moves backward, and the sheet transfer unit performs punching while moving the carbon fiber sheet forward to manufacture a flat preform in which a plurality of layers of carbon fiber sheets are integrated.

Description

Flat type preform manufacturing apparatus using needle punching machine {Apparatus for producing plate typed preform using needle punching measurement}

The present invention relates to an apparatus capable of manufacturing flat string preforms having a constant thickness by laminating multiple layers of carbon fiber sheets, punching them with needles, and bonding them to each other.

In general, a preform is manufactured by laminating sheets of carbon fiber fabric or carbon fiber webs to a set thickness and then needle punching the stacked sheets in a stacked direction.

The carbon fiber fabric in the form of a sheet may have a form in which carbon fibers are formed in one direction, or a form in which carbon fibers are woven orthogonally to each other.

The carbon fiber web in the form of a sheet is made of carbon fibers with a length of about 7 to 8 cm in the form of a non-woven fabric. In the laminated sheets, a plurality of sheet-shaped carbon fiber fabrics may be laminated or sheet-shaped carbon fiber fabrics and sheet-shaped carbon fiber webs may be laminated together.

In the needle punching process, needles provided in the needle punch arrange fibers positioned on the sheet in the stacking direction while the needle punch reciprocates in the vertical direction (lamination direction) of the sheet stack in which the sheets are stacked. As the fibers located on the sheet are arranged in the lamination direction, the sheets are entangled with each other and bound in the lamination direction, so that the bonding strength of the stacked sheets increases in the lamination direction.

Among the prior arts below, 'preform high-speed needle punching method and apparatus' disclosed in Korean Registered Patent No. 10-1539969 (July 22, 2015) is a "base frame; provided in the base frame, in which sheets forming a preform are stacked. Conveyor assembly for transporting sheet stacks; Up and down driving unit provided on the base frame and generating up and down driving force; Connected to the up and down driving unit, receiving the up and down driving force of the up and down driving unit and moving up and down along the conveyor assembly A needle punching member for needle punching the transferred sheet stack, wherein the conveyor assembly includes a conveyor frame, two rollers rotatably coupled to the conveyor frame at a distance from each other, and the two rollers It is configured to include a conveyor belt that is connected and moves according to the rotation of the rollers, a first motor that is connected to the one roller and rotates the roller, and a second motor that is connected to the other roller and rotates the roller.

However, most of the conventional needle punching methods and devices, including the prior art, only present a structure and method for needle punching a carbon fiber sheet laminate, and automatically perform all continuous processes of supplying, cutting, stacking, and punching carbon fiber sheets. A device capable of performing this has not been presented.

Republic of Korea Patent No. 10-1539969 (2015.7.22.) "Preform high-speed needle punching method and device" Korean Registered Patent No. 10-0503499 (2005.7.15.) "Method of manufacturing preform for high-temperature composite material using needle punching" Korean Registered Patent No. 10-1128652 (2012.3.13.) "Hybrid preform and method for manufacturing the same" Korean Registered Patent No. 10-1406869 (2014.6.5.) "Method of manufacturing carbon preform using needle punching method"

Accordingly, the inventor of the present invention is to solve the above conventional problems, and an object of the present invention is to automatically perform all continuous processes of supplying, cutting, stacking, and punching carbon fiber sheets to manufacture a flat preform having the required thickness It is to provide a flat preform manufacturing apparatus using a needle punching machine capable of.

In order to achieve the above object, an apparatus for manufacturing a flat preform using a needle punching machine according to the present invention includes a support frame including a table-shaped horizontal support and a vertical support vertically installed in the middle of the horizontal support; Driving means including a driving motor provided on the upper end of the vertical support and a crankshaft rotationally driven by the driving motor; a sheet supply unit for continuously supplying carbon fiber sheets to the sheet transfer unit through a pair of supply rollers that rotate in conjunction with the driving unit; a sheet transfer unit installed to be movable horizontally on the upper surface of the horizontal support and intermittently forward-transporting the stacked carbon fiber sheets supplied from the sheet supply unit and backward-transfer again in conjunction with the driving means; a needle punching machine for punching the carbon fiber sheet mounted on the sheet transfer unit with a plurality of needles when the sheet transfer unit stops while moving up and down in association with the driving means; A sheet height adjusting unit for adjusting the height of the horizontal support according to the height of the carbon fiber sheet stacked on the sheet transfer unit while supporting the horizontal support; It is possible to manufacture a flat preform in which a plurality of layers of carbon fiber sheets are integrated by cutting the carbon fiber sheet, moving the sheet transfer unit backward, and performing punching while the sheet transfer unit moves the carbon fiber sheet forward.

According to the present invention described above, there are the following effects.

First, since all processes of continuous supply of carbon fiber sheets, punching, cutting, and stacking are performed automatically, productivity is greatly improved.

Second, since the feed pinion with built-in cam, feed rack, and one-way clutch is used, it repeats advance and stop at a certain distance, and since the needle punching machine is synchronized with this, the feed stops during punching and is controlled to feed forward when not punching. .

Third, the height of the conveying plate for conveying the carbon fiber sheet can be adjusted, so that the height of the conveying plate can be automatically adjusted by gradually lowering the conveying plate as the thickness of the stacked sheets increases.

1 is a plan view showing a flat preform manufacturing apparatus using a needle punching machine according to an embodiment of the present invention.
Figure 2 is a front view of the present invention shown in Figure 1
Figure 3 is a rear view of the present invention shown in Figure 1
Figure 4 is a side view showing the sheet supply unit of the present invention shown in Figure 2
Figure 5 is a left side view of the present invention shown in Figure 1
Figure 6 is a front view showing the seat height adjusting unit of the present invention shown in Figure 1
7 is an operating state diagram of the present invention

Hereinafter, an embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

For reference, the description with reference to the drawings is for easier understanding of the present invention, and the scope of the present invention is not limited thereto. And, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

1 is a plan view showing a flat preform manufacturing apparatus using a needle punching machine according to an embodiment of the present invention, FIG. 2 shows a front view of the present invention shown in FIG. 1, and FIG. 3 is the present invention shown in FIG. shows the rear view of

Referring to the illustrated bar, the present invention largely includes a support frame 100, a driving means 200, a sheet supply unit 300, a sheet transfer unit 400, a needle punching machine 500, and a sheet height adjusting unit 600, can be configured.

First, the support frame 100 is a frame capable of installing, fixing, and supporting all the components of the present invention, and is a configuration in which a plurality of frames are connected end to end.

The support frame 100 may be composed of a table-shaped horizontal support 110 and a vertical support 120 vertically coupled in the middle of the horizontal support 110.

The horizontal support 110 has a rail formed on its upper surface to slide the sheet transfer unit 400, and the vertical support 120 has the driving means 200 installed at the top and the sheet supply unit in the middle. 300 and a needle punching machine 500 are installed, and the seat height adjusting unit 600 may be installed on the side.

Next, the driving means 200 simultaneously drives the needle punching machine 500, the sheet supply unit 300, and the sheet transfer unit 400.

The driving means 200 may be composed of a driving motor 210 and a crankshaft 220.

The drive motor 210 may be installed on top of the vertical support 120 .

A crankshaft 220 rotatably driven by the drive motor 210 is rotatably installed on one side of the drive motor 210 . In the present invention, the crankshaft 220 transmits rotational force to the sheet supply unit 300 and the sheet transfer unit 400, and simultaneously converts rotational motion into reciprocating motion to drive the needle punching machine 500.

Next, the sheet supply unit 300 will be described.

The sheet supply unit 300 spreads the carbon fiber sheet (s) wound on a roll and supplies it to the sheet transfer unit 400, and is installed below the top of the vertical support 120.

The sheet supply unit 300 is provided with a pair of supply rollers 310 rotatably installed in the horizontal direction on the vertical support 120 and movable in the transverse direction in front of the supply roller 310, The cutter 320 cutting the carbon fiber sheet s supplied forward through the supply roller 310 and the supply sprocket 330 interlocking with the driving means 200 to drive the supply roller 310 in rotation. can be configured.

The feed sprocket 330 is coupled to one end of the roller shaft of the feed roller 310 and may be interlocked with a first sprocket 461 to be described later so as to interlock with the driving means 200 . As will be described later, this is to allow the supply roller 310 to rotate only when the forward rotation of the feed pinion 440 causes the first sprocket 461 to forward rotate together to forward feed the transfer plate 470 .

That is, since the transport of the transport plate 470 and the carbon fiber sheet s must be synchronized and advanced by the same length, the supply roller 310 is interlocked with the first sprocket 461 .

Also, the cutter 320 may be controlled to cut the carbon fiber sheet s at predetermined length intervals. That is, the cutter 320 may cut the carbon fiber sheet s after the punching of the carbon fiber sheet to a certain length is completed and before the sheet transfer unit 400 moves backward.

Next, the sheet transfer unit 400 will be described.

The sheet transfer unit 400 provides a space for stacking the carbon fiber sheets (s) supplied from the sheet supply unit 300, and reciprocates horizontally along the rail 111 of the horizontal support 110. It is installed, and it is configured to intermittently forward or backward transport.

Specifically, the sheet transfer unit 400 includes a cam 410, a cam rod 420, a transfer rack 430, a transfer pinion 440, a transfer screw 450, a power transmission means 460 and a transfer plate 470 It can be configured including.

The cam 410 is formed in a disk shape and is rotatably installed at the upper end of the vertical support 120 . Since the cam 410 is interlocked with one end of the crankshaft 220, it continues to rotate together while the crankshaft 220 is rotationally driven.

The cam rod 420 is a member connected eccentrically to the cam 410 and converts rotation of the cam 410 into up and down reciprocating motion.

In addition, the transfer rack 430 is hinged to the lower end of the cam rod 420 . The transfer rack 430 may be guided by a separate guide member installed on the side of the vertical support 120 so as to vertically reciprocate (elevate).

In addition, the transfer pinion 440 is teeth-coupled with the transfer rack 430 to interlock with each other.

Here, the transfer pinion 440 is rotatably installed on the side of the horizontal support 110, and the transfer pinion 440 has a one-way clutch inside so that only one direction power transmission is possible. installed

Meanwhile, at the center of the horizontal support 110, a transfer screw 450 is rotatably provided along the longitudinal direction.

In addition, a transfer plate 470 is mounted on the transfer screw 450, and a transfer slider 472 is coupled to the lower surface of the transfer plate 470, and the transfer slider 472 is connected to the transfer screw 450. Since the screw is coupled, the transfer plate 470 moves forward or backward according to forward or reverse rotation of the transfer screw 450 .

In addition, both ends of the transfer plate 470 are seated on the rails 111 installed on both sides of the horizontal support 110 and move in a sliding manner.

Here, the power transmission means 460 for transmitting the rotational power of the transfer pinion 440 to the transfer screw 450 includes first, second, third, and fourth sprockets and first and second timing pulleys. can be configured.

The first sprocket 461 is coaxially coupled with the feed pinion 440 and rotates together. However, when the feed pinion 440 rotates forward due to the one-way clutch, the first sprocket 461 rotates together, but when the feed pinion 440 rotates reversely, the feed pinion 440 is idle. In this state, the first sprocket 461 does not rotate because it becomes idle. That is, power transmission is not performed.

A second sprocket 462 is rotatably installed on a side surface of the horizontal support 110 to be spaced apart from the first sprocket 461 . Of course, the first sprocket 461 and the second sprocket 462 are interlocked by a chain.

The third sprocket 463 is coaxially coupled with the second sprocket 462 and rotates together.

Further, a fourth sprocket 464 is rotatably installed on a side surface of the horizontal support 110 to be spaced apart from the third sprocket 463 . Of course, the third sprocket 463 and the fourth sprocket 464 are also linked by a chain.

In addition, a first timing pulley 465 is rotatably installed at the front edge of the horizontal support 110, and the first timing pulley 465 and the fourth sprocket 464 can be interlocked with each other by a gear box. have. The gear box may be fixed to one corner of the front surface of the horizontal support 110 as shown.

A second timing pulley 466 is coupled to an end of the transfer screw 450 and interlocks with the first timing pulley 465 through a timing belt.

Therefore, when the transfer pinion 440 rotates by the elevation of the transfer rack 430, the transfer screw 450 is rotationally driven. When the transfer pinion 440 rotates forward, power is transmitted, so that the transfer screw ( 450) rotates forward so that the transfer plate 470 moves forward.

However, since power is not transmitted when the transfer pinion 440 rotates in reverse, the transfer screw 450 does not rotate and the transfer plate 470 is in a stopped state.

The reason for this operation is that the crankshaft 220 is continuously rotated by the drive motor 210 and the transfer pinion 440 while the transfer rack 430 repeatedly moves up and down by the cam 410. ) also repeats forward and reverse rotation.

At this time, while the transfer pinion 440 rotates forward, the transfer screw 450 rotates forward to forward transfer the transfer plate 470 by a predetermined distance. In this state, the needle punching machine 500 is in an elevated state.

However, while the feed pinion 440 rotates in reverse, the feed plate 470 stops, and during this time, the needle punching machine 500, which will be described later, descends to punch the carbon fiber sheet s.

On the other hand, when the transfer plate 470 moves forward to the maximum and punching to the required length of the carbon fiber sheet s is completed, it must be transferred backward to laminate a new carbon fiber sheet s.

To this end, it is necessary to reverse rotate the transfer screw 450.

In order to reverse the transfer screw 450, a reverse motor 481 installed at the other front edge of the horizontal support 110 is installed, and a reverse drive gear 482 is coupled to the axis of the reverse motor 481. do.

In addition, a reverse driven gear 483 is tooth-coupled with the reverse driving gear 482 and interlocked, and the reverse driven gear 483 is coaxially coupled with the fourth timing pulley 485 and rotates together.

In addition, the fourth timing pulley 485 is interlocked with the third timing pulley 484 through a timing belt, and the third timing pulley 484 is coaxially coupled with the second timing pulley 466 .

Accordingly, the transfer screw 450 can be reversely rotated by driving the reverse motor 481, and as a result, the transfer plate 470 moves backward.

It is preferable that a reverse cylinder 486 for elevating the reverse motor 481 is installed below the reverse motor 481 . When the reverse motor 481 ascends, the reverse drive gear 482 is interlocked with the reverse driven gear 483, and when it descends, the reverse drive gear 482 is not interlocked.

That is, during the forward rotation of the transfer screw 450 and forward transfer of the transfer plate 470, the reverse motor 481 is lowered so that the reverse drive gear 482 and the reverse driven gear 483 are not interlocked. When the transfer plate 470 moves backward, the reverse cylinder 486 operates so that the reverse driving gear 482 and the reverse driven gear 483 are interlocked.

However, while the transfer screw 450 reversely rotates, the reverse rotational force is transmitted to the transfer pinion 440 by the power transmission means 460 . This collides with the transfer pinion 440 which repeats forward rotation and reverse rotation according to the elevation of the transfer rack 430 .

To prevent this, when the transfer screw 450 reversely rotates, the second sprocket 462 and the third sprocket 463 are disconnected so that they do not interlock with each other to prevent reverse propagation of power to the transfer pinion 440. More tools can be made available.

To this end, the second sprocket 462 and the third sprocket 463 may have tooth profiles formed on their facing surfaces to form an intermittent clutch 463a that is connected when teeth are engaged with each other and disconnected when separated. Further, an intermittent cylinder 463b is further provided so that the third sprocket 463 is intermittent with the second sprocket 462 by moving the third sprocket 463 forward and backward.

Preferably, a plurality of wire brushes 471 are protruded from the upper surface of the transfer plate 470.

The wire brush 471 is densely formed on the upper surface of the transfer plate 470 like a brush and has a certain height.

Accordingly, the carbon fiber sheet s is placed on the wire brush 471 and is in a floating state from the transfer plate 470. Due to this, when the needle 540 to be described later punches the carbon fiber sheet s, the end of the needle 540 is prevented from directly colliding with the transfer plate 470.

In other words, since a gap is formed between the carbon fiber sheet s and the transfer plate 470 by the wire brush 471, even if the needle 540 penetrates the carbon fiber sheet s, it does not collide with the transfer plate. will not be

In addition, a forward limit switch 490a is provided on the front side of the horizontal support 110 to stop the forward movement of the transfer plate 470 when touched while moving forward.

When the transfer plate 470 touches the forward limit switch 490a, the reverse drive gear 482 and the reverse driven gear 483 are interlocked by the operation of the reverse cylinder 486, and the transfer screw 450 As a result of reverse rotation, the transfer plate 470 moves backward.

In the case of backward movement, unlike forward movement, it is not intermittently transported backward, but continues to move to the rear of the horizontal support 110.

Conversely, a backward limit switch 490b is provided on the rear side of the horizontal support 110 to stop the backward movement of the transfer plate 470 when touched while moving backward.

When the transfer plate 470 touches the backward limit switch 490b, the reverse drive gear 482 and the reverse driven gear 483 are not interlocked by the reverse cylinder 486, and the second and third sprockets Since these are connected to each other, the forward rotation of the transfer screw 450 starts again, and the transfer plate 470 performs intermittent forward transfer.

For reference, it is preferable that the forward limit switch and the backward limit switch are movable and fixed along the side of the horizontal support.

Next, the needle punching machine 500 will be described.

The needle punching machine 500 is configured to punch the carbon fiber sheet (s) transported to the lower side while lifting, and includes a crank arm 510, a lifting member 520, a guide member 530, a needle 540, a perforated plate ( 550) may be configured.

The crank arm 510 is coupled to the crankshaft 220 of the driving means 200 and converts the rotational motion of the crankshaft 220 into linear reciprocating motion.

An elevating member 520 is provided horizontally at the lower end of the crank arm 510 and is hinged to each other.

A guide member 530 is provided between the upper surface of the elevating member 520 and the upper end of the vertical support 120 to guide the linear reciprocating lifting motion of the elevating member 520 .

In addition, a plurality of needles are fixed and arranged at regular intervals and patterns on the lower surface of the elevating member 520 . However, the needle 540 may have any structure or shape used in conventional preform manufacturing.

A perforated plate 550 is horizontally installed below the needle 540 .

A plurality of holes 551 are formed in the perforated plate 550, and each hole 551 is formed at a position corresponding to the needle 540 so that the needle 540 passes through the hole 551, respectively, and carbon Punch the fiber sheet.

Separate pressure cylinders 560 are provided on both sides of the perforated plate 550 so that when the needles 540 descend and perform punching, the perforated plate 550 is lowered to elastically press the carbon fiber sheet (s). will give

Also, since the perforated plate 550 presses the carbon fiber sheet s when the needle 540 rises, the needle 540 is easily removed from the sheet.

Next, the seat height adjusting unit 600 will be described.

The seat height adjusting unit 600 gradually lowers or raises the height of the transfer plate 470 as the thickness of the preform stacked on the transfer plate 470 increases, and largely includes a lift motor 610, a lift It is configured to include a coaxial 620, a lifting drive screw 630, and a lifting auxiliary screw 640.

The lifting motor 610 is installed in the center of the horizontal support 110 in a longitudinal direction.

In addition, an elevation drive shaft 620 is coupled to the shaft of the elevation motor 610 along the longitudinal direction to drive forward or reverse rotation. At this time, an elevating worm 621 is formed at an end of the elevating drive shaft 620 .

In addition, an elevation drive screw 630 is rotatably installed vertically on the lower surface of the horizontal support plate 112 coupled to the lower portion of the horizontal support 110. The lower end of the lift drive screw 630 is screwed to a lift support 632 separately provided on the ground or floor.

At this time, an elevating worm gear 631 is coupled to the upper end of the elevating drive screw 630 and interlocks with the elevating worm 621 . Accordingly, the elevation driving screw 630 may rotate forward or backward due to rotation of the elevation driving shaft 620 .

In addition, one or more lifting auxiliary screws 640 are vertically rotatably installed on the lower surface of the horizontal support plate 112 to be spaced apart from the lifting driving screw 630 .

Here, the elevation auxiliary screw 640 and the elevation drive screw 630 may rotate forward or backward in the same direction by being interlocked with each other by a chain or the like. The lifting auxiliary screw 640 is also screwed to the lifting support 632 .

Therefore, by driving the lifting motor 610, the lifting drive screw 630 and the lifting auxiliary screw 640 rise or fall while forward or reverse rotation, so that the horizontal support plate 112, the horizontal support 110, Since the entire transfer plate 470 can move up and down, the height of the transfer plate 470 is adjusted.

On the other hand, in order to adjust the height of the transfer plate 470, the control screw 650, the control worm gear 660a, An adjusting worm 660b, an adjusting motor 670, an adjusting slider 680, an upper limit switch 690a, and a lower limit switch 690b may be further included.

The adjusting screw 650 is vertically rotatably installed on the other side of the vertical support 120 .

An adjusting worm gear 660a is coupled to the top of the adjusting screw 650.

In addition, the adjusting worm gear 660a is installed to interlock with the adjusting worm 660b.

In addition, an adjusting motor 670 for rotating the adjusting worm 660b may be installed on a side surface or top of the vertical support 120 . The control worm 660b and the control motor 670 may be connected by a belt to transmit power.

At this time, the adjusting slider 680 is screwed to the adjusting screw 650, and an upper limit switch 690a and a lower limit switch 690b are installed on the inner upper and lower parts of the adjusting slider 680, respectively.

The upper limit switch 690a and the lower limit switch 690b are spaced apart from each other at a predetermined interval, and the horizontal support plate 112 of the horizontal support 110 is installed in a retracted state therebetween.

So, when the horizontal support plate 112 descends and reaches the lower limit switch 690b, the elevation motor 610 is controlled to stop descending and ascend, and stops ascending when reaching the upper limit switch 690a while ascending. The elevating motor 610 is controlled to stop.

Therefore, since the heights of the upper limit switch 690a and the lower limit switch 690b vary according to the height of the adjusting slider 680, the horizontal support plate 112 rises and stops by being caught by the upper limit switch 690a. height can also be adjusted. That is, the height of the transfer plate 470 can be adjusted.

Hereinafter, a process of manufacturing a flat preform by laminating and punching the elastic fiber carbon fiber sheet (s) by each of the above-described configurations will be described.

First, the carbon fiber sheet s is supplied forward through the sheet supply unit 300 .

To this end, the driving motor 210 continues to rotate and drive the crankshaft 220 without stopping.

The rotation of the crankshaft 220 causes the cam 410 to rotate, and the movement of the cam 410 and the cam rod 420 causes the transfer rack 430 to repeatedly ascend and descend. The transfer pinion 440 repeats forward rotation and reverse rotation.

At this time, due to the one-way clutch, the first sprocket 461 rotates only when the feed pinion 440 rotates forward, and rotates the feed screw 450 through the power transmission means 460, and rotates reversely. In this case, the first sprocket 461 does not rotate and the transfer screw 450 stops.

Accordingly, the transfer plate 470 is forward-transferred by a predetermined distance and stops, thereby repeating the operation.

Here, since the supply roller 310 is interlocked with the first sprocket 461, when the first sprocket 461 rotates, the supply roller 310 rotates and the introduced carbon fiber sheet s moves forward. are supplied When the first sprocket 461 stops, supply of the carbon fiber sheet s also stops.

The carbon fiber sheet s supplied through the supply roller 310 is spread and placed on the upper surface of the transfer plate 470, that is, on the wire brush 471.

Accordingly, the process of moving the carbon fiber sheet s on which the transfer plate 470 is mounted forward for a predetermined distance and stopping is repeated.

Simultaneously with this operation, the needle punching machine 500 also performs punching while repeatedly raising and lowering.

In other words, while the transfer plate 470 is being forward-transferred, the crank arm 510 rises and reaches top dead center, and when the transfer plate 470 stops, the crank arm 510 descends and reaches the bottom dead center. While doing so, the needle 540 penetrates the perforated plate 550 and punches the laminated carbon fiber sheet s.

Then, while the crank arm 510 rises again, the needle 540 is removed from the sheet. At this time, the carbon fiber sheet s on which the perforated plate 550 is stacked is elastically pressed and then rises.

When the transfer plate 470 moves forward by a required distance (the length of the elastic fiber sheet to be manufactured) in this way, the forward limit switch 490a is touched.

The forward rotation of the transfer screw 450 is stopped by the operation of the forward limit switch 490a.

That is, as the intermittent cylinder 463b operates and the intermittent clutch 463a is separated, the second sprocket 462 and the third sprocket 463 are disconnected from each other. Accordingly, transmission of power from the transfer pinion 440 to the transfer screw 450 is stopped.

At the same time, the reverse cylinder 486 raises the reverse motor 481 so that the reverse driving gear 482 is engaged with the reverse driven gear 483 and the transfer screw 450 reversely rotates.

Accordingly, the transfer plate 470 moves backward and reaches a point starting from the rear of the horizontal support 110 .

However, before moving backward, a process of cutting the carbon fiber sheet s while the cutter 320 moves in the transverse direction must be performed.

After the cutting is performed, when the transfer plate 470 moves backward and touches the backward limit switch 490b, the reverse rotation of the transfer screw 450 is stopped, and the reverse cylinder 486 operates the reverse motor 481 ) is lowered to disengage the reverse driving gear 482 and the reverse driven gear 483 from each other.

In addition, since the intermittent cylinder 463b operates and the intermittent clutch 463a is connected again to enable power transmission, the power of the transfer pinion 440 is transmitted to the transfer screw 450 and the transfer screw 450 ) starts a forward turn.

Therefore, the transfer plate 470 starts forward transfer again, and the sheet supply unit 300 supplies new carbon fiber sheets s again and laminates them on the upper surface of the existing punched carbon fiber sheets s, Punching is performed to manufacture a preform of a certain thickness.

However, if this operation is performed repeatedly, the thickness of the preform becomes thick because the sheets are continuously stacked.

That is, as the thickness of the preform increases, the height of the transfer plate 470 needs to be gradually lowered.

To this end, the height of the transfer plate 470 is lowered little by little after repeated stacking several times or every time stacking is performed. That is, when the elevation driving screw 630 and the elevation auxiliary screw 640 are rotated by driving the elevation motor 610, the horizontal support plate 112 and the transfer plate 470 descend.

At this time, when the side end of the descending horizontal support plate 112 touches the lower limit switch 690b, the lifting motor 610 reversely rotates the lifting driving screw 630 and the lifting auxiliary screw 640 so that the horizontal The support plate 112 rises.

When the side end of the rising horizontal support plate 112 touches the upper limit switch 690a, the lifting motor 610 stops driving and adjusts the height of the horizontal support plate 112 in such a way that the height is fixed. do.

Here, when the adjustment motor 670 rotates the adjustment screw 650 to adjust the height of the adjustment slider 680, the height of the upper limit switch 690a is adjusted so that the horizontal support plate 112 Since the rise of is stopped, the height of the horizontal support plate 112 can be gradually lowered by gradually lowering the adjusting slider 680 .

After manufacturing of the preform of a certain thickness is completed and taken out, the adjusting slider 680 rises to its original height, and the horizontal support plate 112 also rises, so that all processes can be repeated from the beginning.

Representative embodiments of the present invention have been described above with reference to the drawings, but those skilled in the art will be able to make various applications and modifications within the scope of the present invention based on the above information. Therefore, the scope of the present invention should not be limited to the described embodiments and should not be defined, but should be defined by not only the claims to be described later, but also those equivalent to these claims.

100: support frame
110: horizontal support 111: rail
112: horizontal support plate 120: vertical support
200: driving means
210: drive motor 220: crankshaft
300: sheet supply unit 310: supply roller
320: cutter 330: supply sprocket
400: sheet transfer unit
410: cam 420: cam rod
430: transfer rack 440: transfer pinion
450: transfer screw 460: power transmission means
461: 1st sprocket 462: 2nd sprocket
463: third sprocket 463a: intermittent clutch
463b: Intermittent cylinder 464: 4th sprocket
465: first timing pulley 466: second timing pulley
470: transfer plate 471: wire brush
472: transfer slider
481: reverse motor 482: reverse drive gear
483: reverse driven gear 484: third timing pulley
485: fourth timing pulley 486: reverse cylinder
490a: forward limit switch 490b: backward limit switch
500: needle punching machine 510: crank arm
520: lifting member 530: guide member
540: needle 550: perforated plate
551: hole 560: pressure cylinder
600: seat height adjustment unit 610: lifting motor
620: lifting drive shaft 621: lifting worm
630: lifting drive screw 631: lifting worm gear
632: elevating support
640: lifting auxiliary screw 650: adjusting screw
660a: control worm gear 660b: control worm
670: control motor 680: control slider
690a: upper limit switch 690b: lower limit switch
s: carbon fiber sheet

Claims (10)

A support frame including a table-shaped horizontal support and a vertical support installed vertically in the middle of the horizontal support;
Driving means including a driving motor provided on the upper end of the vertical support and a crankshaft rotationally driven by the driving motor;
a sheet supply unit for continuously supplying carbon fiber sheets to the sheet transfer unit through a pair of supply rollers that rotate in conjunction with the driving means;
a sheet transfer unit installed to be movable horizontally on the upper surface of the horizontal support and intermittently forward-transporting the stacked carbon fiber sheets supplied from the sheet supply unit and backward-transfer again in conjunction with the driving means;
a needle punching machine for punching the carbon fiber sheet mounted on the sheet transfer unit with a plurality of needles when the sheet transfer unit stops while moving up and down in association with the driving means;
A seat height adjusting unit for adjusting the height of the horizontal support according to the height of the carbon fiber sheet stacked on the sheet transfer unit while supporting the horizontal support;
When punching is completed by a certain length, the carbon fiber sheet is cut by the sheet supply unit, the sheet transfer unit moves backward, and the sheet transfer unit performs punching while forward transporting the carbon fiber sheet, thereby integrating a plurality of layers of carbon fiber sheets. A flat preform manufacturing apparatus using a needle punching machine, characterized in that for manufacturing a flat preform. According to claim 1,
The sheet supply unit,
A pair of supply rollers installed on the vertical support to supply carbon fiber sheets forward, a supply sprocket coupled to one end of one of the supply rollers and interlocked with the crankshaft, and installed in front of the supply rollers A flat preform manufacturing apparatus using a needle punching machine, characterized in that it comprises a cutter for cutting the supplied carbon fiber sheet in units of a predetermined length. According to claim 1,
The sheet transfer unit,
A cam rotatably installed at the top of the vertical support and interlocked with the crankshaft, a cam rod coupled to the cam, and a hinge coupled to the lower end of the cam rod and reciprocating vertically along the side of the vertical support A transfer rack, a transfer pinion rotatably installed on the side surface of the horizontal support, interlocked with the transfer rack, and having a one-way clutch therein, and a transfer screw provided rotatably along the longitudinal direction of the horizontal support; A flat plate type using a needle punching machine characterized in that it comprises a power transmission means for transmitting power from the transfer pinion to the transfer screw and a transfer plate formed at both ends of the horizontal support and seated on a rail and screwed to the transfer screw. Preform manufacturing equipment. According to claim 3,
The power transmission means,
A first sprocket coaxially coupled to the feed pinion, a second sprocket spaced apart from the first sprocket and interlocking with each other through a chain, a third sprocket coaxially coupled to the second sprocket and rotating, and the third sprocket A fourth sprocket spaced apart from each other and interlocked with a chain, a first timing pulley installed on the front surface of the horizontal support and interlocked with the fourth sprocket by a gear box, and coupled to an end of the transfer screw to generate the first timing pulley A flat preform manufacturing apparatus using a needle punching machine, characterized in that it comprises a second timing pulley interlocked with the pulley. According to claim 4,
The second sprocket and the third sprocket are connected to each other by an intermittent clutch and can be disconnected by an intermittent cylinder that moves the third sprocket forward and backward. According to claim 4,
A third timing pulley coaxially coupled to the second timing pulley, a fourth timing pulley coupled to and apart from the third timing pulley, a driven gear coaxially coupled to the fourth timing pulley, and a driven gear A needle punching machine characterized in that it comprises a drive gear provided adjacently, a reverse motor for driving the drive gear, and a reverse cylinder for elevating the reverse motor so that the drive gear is interlocked or not interlocked with the driven gear. Flat type preform manufacturing device using. According to claim 3,
Flat preform manufacturing apparatus using a needle punching machine, characterized in that a plurality of wire brushes are formed on the upper surface of the transfer plate. According to claim 3,
A forward limit switch is provided at the front of the horizontal support to stop the forward movement of the conveying plate and cause the conveying screw to reversely rotate to move the conveying plate backward,
Plate type preform manufacturing apparatus using a needle punching machine, characterized in that a backward limit switch is provided at the rear of the horizontal support to advance the conveying plate by causing the conveying screw to rotate forward while stopping the backward movement of the conveying plate. According to claim 1,
The needle punching machine,
A crank arm coupled to the crankshaft, a lifting member hinged to the lower end of the crank arm and moving up and down according to the rotation of the crankshaft, and provided between the upper end of the vertical support and the lifting member to guide the lifting member It is characterized in that it comprises a guide member, a plurality of needles fixed and arranged on the lower surface of the elevating member, and a perforated plate provided horizontally on the lower side of the needles and having a plurality of holes formed at positions corresponding to the needles. A flat preform manufacturing apparatus using a needle punching machine. According to claim 1,
The seat height adjustment unit,
An elevation motor installed at the center of the horizontal support, a forward or reverse rotation by the elevation motor, and an elevation driving shaft having an elevation worm formed at an end portion thereof, and vertically to the lower surface of the horizontal support plate coupled to the lower portion of the horizontal support. An elevation drive screw installed rotatably and having an elevation worm gear interlocked with the elevation worm at an upper end thereof, and at least one elevation auxiliary screw rotatably installed vertically on the lower surface of the horizontal support plate and interlocked with the elevation drive screw; An adjusting screw rotatably installed vertically on the other side of the vertical support, an adjusting worm gear coupled to an upper end of the adjusting screw, an adjusting worm interlocking with the adjusting worm gear, and an adjusting motor rotating the adjusting worm; A needle punching machine characterized in that it comprises an adjusting slider screwed to the adjusting screw to move up and down, and an upper limit switch and a lower limit switch provided at the upper and lower portions of the adjusting slider and into which the side surface of the horizontal support plate is retracted. Flat type preform manufacturing equipment.

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