KR19990015364A - Heavy plate combination device for plywood manufacture - Google Patents

Abstract

The present invention automates the combination of the middle plate located in the middle of the plywood for the manufacture of plywood, while combining the middle plate with less labor, while reducing the combination cost of the middle plate by increasing the combination time and efficiency of the middle plate It relates to a heavy plate combination device for manufacturing plywood. The plywood manufacturing apparatus for plywood manufacture includes: a frame having a pair of struts and a suction chamber supported by a strut and having a suction force acted on by a blower fan provided at an upper portion of the strut; A middle plate stacking portion which is located at the lower portion of the suction chamber between the pillars and includes a plurality of table lifts each of which is loaded with a heavy plate made of different kinds of wooden boards; A middle plate conveying unit which is provided in the suction chamber and alternately conveys and stacks the middle plates loaded on each table lift from the loading position to the discharge position; And a discharge table lift for supporting the alternately stacked intermediate plates carried by the intermediate plate conveying unit.

Description

Heavy plate combination device for plywood manufacture

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heavy plate combining device for manufacturing plywood, and particularly, when manufacturing a plywood by combining a plurality of heavy plates having different grains used for manufacturing plywood, by automating the combination of the heavy plates having different grains, The present invention relates to a plywood manufacturing apparatus for manufacturing plywood that can shorten the manufacturing time and can increase the manufacturing efficiency of plywood by reducing labor.

Generally, plywood is produced by cutting a solid wood into a thin plate, alternately stacking wood boards having vertical and horizontal wood grains in multiple layers, and attaching them using an adhesive. As described above, by alternately overlapping the wooden board having the vertical wood grain and the wooden board having the horizontal wood grain, the plywood has a relatively large strength.

As described above, the manufacture of plywood is first placed on the wooden board having one kind of wood grain, the wooden board having another kind of wood grain, then the wooden board having one kind of wood grain is continuously placed on the wooden board having another kind of wood grain You lose. When the laminated wooden boards are stacked at a predetermined height, they are transported to the bonding site and bonded by an adhesive so as to have a predetermined thickness, thereby completing one plywood board.

On the other hand, wooden boards used for plywood are typically provided with a wooden board made of high-quality wood as an intermediate board between the upper and lower boards and the upper and lower boards of the plywood, and the middle boards This fallen wooden board is made of conifers such as king, pine, and is a wooden board provided between the upper board, the lower board and the middle board. The use of such a heavy plate is to reduce the cost of manufacturing the plywood while maintaining the strength of the plywood.

However, in conventional plywood manufacturing, as the combination work of the heavy plates having different wood grains or materials is performed by a worker by hand, much labor is required for the combination of the heavy plates made at the time of manufacture of the plywood, and the combination of the heavy plates There was a problem that time and efficiency were lowered and manufacturing costs were increased.

Accordingly, it is an object of the present invention to manufacture plywood by automating the combination of midboards located in the middle of the plywood, combining the midboards with less labor, while increasing the assembly time and efficiency of the midboards. It is to provide a heavy plate combination device for producing plywood that can be made cheap.

1 is a perspective view schematically showing a heavy plate combining device for manufacturing plywood according to the present invention.

Figure 2 is a front view of the heavy plate combination device for producing plywood according to the present invention.

Figure 3 is a bottom view showing the bottom of the suction chamber of the heavy plate combination device for producing plywood according to the present invention.

Figure 4 is a perspective view showing the grip portion of the heavy plate combination device for producing plywood according to the present invention.

5 is an exploded perspective view for illustrating the structure of the pin member shown in FIG.

6 is a cross-sectional view taken along the line VI-VI of FIG. 3.

Fig. 7 is a perspective view showing a clutch and a brake for stopping the transmission of driving force to the conveying belt and stopping the conveying belt in the correct position while the holding portion is raised and lowered;

8 is a perspective view schematically showing a middle plate dropping means for dropping a heavy plate carried by a carrying means to a discharge position;

* Description of the symbols for the main parts of the drawings *

1: frame 2,3: table lift

4,5: roller 6: tension adjusting means

7: carrying belt guider 8: motor

9: ejection table lift 10: middle plate holding means

11: carrying belt 12: middle plate dropping means

13: vacuum pump 14: first air cylinder

16,16a: hollow bar 17: suction cup

18: pin member 19: buffer spring

22: suction member 23: second air cylinder

25 clutch 28 proximity sensor

29; Brake 40: Third Air Cylinder

100,100a: Holding 101: Blowing fan

102: suction chamber

The object as described above comprises: a frame having a pair of struts and a suction chamber supported by the strut and having a suction force acted by a blowing fan provided on the top of the strut; A middle plate stacking portion positioned below the suction chamber between the pillars and including a plurality of table lifts each of which is loaded with a heavy plate made of different kinds of wooden boards; A middle plate conveying unit which is installed in the suction chamber and alternately conveys and stacks the middle plates loaded on the respective table lifts from the loading position to the discharge position; It is achieved by the plywood manufacturing apparatus for manufacturing plywood according to the invention, characterized in that it comprises an discharge table lift for supporting the alternately stacked intermediate plates carried by the intermediate plate conveying unit.

In the above, the middle plate conveying portion is driven by a vacuum pump installed in the suction chamber, the middle plate holding means for lifting up a predetermined distance in order to hold the middle plate loaded on the middle plate loading portion, and one of the struts A conveying means for conveying to an upper portion of the discharge table lift when the middle plate driven by an installed motor and held by the middle plate holding means is raised to a lower surface of the suction chamber, and positioned above the discharge table lift. And middle plate dropping means for dropping the heavy plate carried by the conveying means to the discharge table lift.

The middle plate holding means has a plurality of pairs of hollow bars operated by a first air cylinder driven by the vacuum pump, a plurality of suction cups communicating with the interior of the hollow bars, respectively, and installed under the hollow bars; A plurality of pin members provided between the suction cups to penetrate the upper portion of the middle plate to grip the middle plate, and to cushion shock caused by the contact between the suction cup and the middle plate when the hollow bar is lowered. A buffer spring installed at an end and a second air cylinder positioned between the hollow bars and acting simultaneously with the first air cylinder for operating the hollow bar, and holding the center of the middle plate by the suction force from the suction chamber. In order to include a plurality of suction member is formed in the lower portion of the suction hole.

The medium conveying means is a motor installed in one of the struts, a conveying belt which is driven by the motor and has a plurality of holes having the same pitch as the suction hole formed in the lower portion of the suction chamber, and the power of the motor. It includes a clutch for transmitting and blocking the to the carrying belt, and a brake for braking the drive of the carrying belt when the power of the motor is cut off by the clutch.

The clutch may be an air clutch or an electromagnetic clutch, and the brake may be an air brake or an electromagnetic brake.

In the suction chamber, a plurality of suction holes and suction slots are formed at the bottom such that the middle plate is sucked to the lower surface of the suction chamber when the middle plate is held by the middle plate holding means and raised to the lower surface of the suction chamber. do.

Plywood manufacturing apparatus for manufacturing a plywood according to the invention preferably further comprises a belt tension adjusting means for adjusting the tension of the conveying belt, the belt tension adjusting means is capable of rotating the belt pulley, belt pulley in which the conveying belt is installed It may include a bracket member for supporting the bracket, a support plate for pivotally supporting the bracket member by the pin, and an adjustment bolt for pivoting the bracket member about the pin.

The motor, clutch and brake are operated by a proximity sensor that senses the position of the midboard carried by the conveyance belt, the proximity sensor being located above the discharge table lift.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Since the plywood manufacturing apparatus for manufacturing plywood according to the present invention has a symmetrical configuration, only one part is described for clarity of explanation, and only one part is designated by reference numerals in the drawings.

1 is a perspective view schematically showing a heavy plate combination device for manufacturing plywood according to the present invention, Figure 2 is a front view of the heavy plate combination device for manufacturing plywood according to the present invention, Figure 3 is a suction chamber of the heavy plate combination device for manufacturing plywood according to the present invention Bottom view showing the bottom of a.

As shown in the drawings, the plywood manufacturing apparatus for plywood manufacture according to the present invention is supported by a pair of struts 100 and 100a fixedly installed on the floor and the struts 100 and 100a and provided on an upper portion of the struts 100 and 100a. It includes a frame (1) having a suction chamber 102 is formed by the blowing fan 101 is a suction force having a size of approximately 10 horsepower therein. A suction gap 27 and a plurality of suction holes 26 and 26a are formed on the lower surface of the suction chamber 102 to which the suction force by the blower fan 101 is applied.

Below the suction chamber 102 between the struts 100, 100a are table lifts 2, 3, in which different or the same kind of heavy plates are loaded by means of loading, such as forklifts, respectively. A plurality of rollers 4, 5 are provided at the top of the table lifts 2, 3, which are positioned accurately under the suction chamber 102 when the plate is loaded by a forklift. Helps to let

When the heavy plate is loaded to the table lifts 2 and 3 by a forklift to a predetermined height, the sensors 6a, 6b; 7a and 7b installed in the suction chamber 102 are loaded on the table lifts 2 and 3 The top plate is sensed, and the table lifts 2, 3 are raised until the loaded plate is sensed by the sensors 6a, 6b; 7a, 7b.

The suction chamber 102 is provided with a middle plate conveying portion, which holds the middle plates loaded on the respective table lifts 2 and 3, is raised to a predetermined height, and the table lifts 2 and 3 are in the raised position. Is transported from the discharge position to the discharge table lift 9 and laminated to the discharge table lift 9.

The middle plate conveying unit is driven by a vacuum pump 13 installed in the suction chamber 102, and the middle plate holding means 10 for elevating a predetermined distance to hold the middle plates loaded on the table lifts 2 and 3, respectively, Of the discharge table lift 9 adjacent to the support 100 when the middle plate driven by the motor 8 installed in the 100 is gripped by the middle plate holding means 10 is raised to the lower portion of the suction chamber 102. A conveying means for conveying upward and a suction plate 102 located above the discharge table lift 9 for lifting a predetermined distance to drop the heavy plate carried by the conveying means onto the discharge table lift 9. The middle plate dropping means 12 is included.

As shown in detail in FIG. 4, the intermediate plate holding means 10 are each operated by a plurality of pairs of first air cylinders 14 driven by a vacuum pump 13 provided on top of the suction chamber 102. And a plurality of pairs of hollow bars 16, 16a. The plurality of suction cups 17 installed below the hollow bars 16 and 16a communicate with the interiors of the hollow bars 16 and 16a, respectively. In addition, a plurality of pin members 18 for penetrating the upper portion of the middle plate to hold the middle plate are provided below the hollow bars 16 and 16a between the suction cups 17. By the operation of the first cylinder 14, the hollow bar (16, 16a) is guided by the guider 41 when lowered, and the suction cup 17 and the middle plate of the suction plate 17 installed on the lower portion of the hollow bar (16, 16a) The impact due to the contact is cushioned by a buffer spring 19 installed at the end of the piston 15 of the first cylinder 14.

Hollow bars 16 and 16a are located on both sides of the upper side of each table lift 2 and 3, as shown in FIGS. 2 and 3, between the pair of hollow bars 16, 16; 16a and 16a. Suction members 22 are respectively located in the chamber. The hollow bars 16 and 16a are formed as hollow rectangular cylinders whose both ends are sealed, and communicate with the suction chamber 102 through the suction tube 20 (shown in FIG. 4). Therefore, the suction force of the suction chamber 102 by the blower fan 101 acts inside the hollow bars 16 and 16a through the suction tube 20.

Suction cup 17 is formed of a soft rubber, is installed in the lower portion of the hollow bar (16, 16a) to communicate with the interior of the hollow bar (16, 16a). When the suction cup 17 is lowered by the first air cylinder 14, the suction cup 17 is in close contact with the upper portion of the middle plate mounted on the top of the table lifts 2, 3, and by this close contact, the suction cup 17 A vacuum is formed and the middle plate is adsorbed to the suction cup 17.

On the other hand, by the operation of the first air cylinder 14, when the suction cup 17 installed in the hollow bar (16, 16a) is in contact with the upper portion of the middle plate, it is also provided in the lower portion of the hollow bar (16, 16a) The middle plate holding pins 33 of the plurality of pin members 18 penetrate the upper portion of the middle plate. Therefore, when the suction force by the suction cup 17 becomes smaller than the load of the middle plate, the middle plate can be gripped more firmly by the pin member 18.

This pin member 18 is welded and fixed to the hollow bars 16 and 16a as shown in FIG. 5 and has a cylindrical body 32 having a female threaded portion 36, a middle plate holding pin 33 formed of screw screws, And a cap member 37 having a male screw portion 37 formed on an outer surface thereof so as to be screwed to the female screw portion 36 of the cylindrical body 32, and a receiving groove 38 in which a middle plate gripping pin 33 is accommodated in a central portion thereof. (34). The cap member 34 is the female screw portion 36 of the cylindrical body 32 after the middle gripping pin 33 is settled in the receiving groove 38 so that the pointed end portion of the middle gripping pin 33 protrudes outward. By screwing the male screw portion 37 to the), the middle plate holding pin 33 can be fixed and held in place.

When the pin member 18 has the configuration as described above, the end of the middle plate holding pin 33 that penetrates and grips the middle plate is damaged and the holding force is weakened. It is possible to replace the middle plate gripping pins 33 and to select the middle plate gripping pins 33 of various sizes, so that the cap member 34 is The size of the end of the middle plate holding pin 33 protruding from the bottom can be adjusted.

On the other hand, the suction member 22 located above each of the table lifts 2, 3 is operated simultaneously with the first air cylinder 14 for operating the hollow bars 16, 16a as shown in FIG. It is operated by the second air cylinder 23. The suction member 22 has a plurality of suction holes 21 formed in the lower surface, the suction force of the blowing fan 101 acting on the suction chamber 20 acts inside. When the suction member 22 is lowered to the middle plate by the second air cylinder 23 and the lower surface is in contact with the middle plate, the suction force acting on the inside of the suction member 22 is applied to the middle plate through the suction hole 21. It will act in the upper center.

Therefore, the middle plate loaded on the table lifts 2 and 3 is sucked and held by the suction force to the suction cup 17 and the suction member 22 by the operation of the first and second air cylinders 14 and 23, A plurality of pin members 18 provided in the hollow bars 16 and 16a penetrate the upper portion of the middle plate.

Meanwhile, the middle plate conveying means is driven by the motor 8 and the motor 8 installed in one of the pillars 101 and 101a, and the suction hole 26a formed in the lower surface of the suction chamber 102. To the conveyance belt 11 having a plurality of holes 24 having the same pitch as), the clutch 25 to transmit and block the power of the motor 8 to the conveyance belt 11, and to the clutch 25. It includes a brake 29 for braking the drive of the conveying belt 11 when the power of the motor 8 is interrupted from the transmission to the conveying belt 11.

When the middle plate is sucked and gripped by the suction cup 17, the suction member 22 and the pin member 18, the first plate is brought into close contact with the lower portion of the carrying belt 11 provided on the lower surface of the suction chamber 102. And the second air cylinders 14 and 23 are raised. The conveying belt 11 is operated by the clutch 25 while the first and second air cylinders 14 and 23 are operated up and down, that is, while the middle gripping means grips the middle plate. Power is shut off and remain stationary.

When the first and second air cylinders 14 and 23 are raised so that the heavy plates sucked and held by the suction cup 17, the suction member 22 and the pin member 18 closely contact the lower part of the carrying belt 11, In response to a signal from a sensor (not shown) that detects the rise of the first and second air cylinders 14, 23, the clutch 25 is operated to transmit power of the motor 8 to the carrying belt 11. By this, the conveying belt 11 is operated to convey the heavy plate to the position of the discharge table lift 9.

When the conveying belt 11 is operated, conveying is conveyed by the suction force of the blowing fan 101 acting on the middle plate through the suction holes 26 and 26a formed in the lower portion of the suction chamber 102 and the suction gap 27. The heavy plate is conveyed by the hole 11 formed in the conveyance belt 11 and the suction hole 26 formed in the lower portion of the suction chamber 102 in close contact with the belt 11 and having the same pitch. While being transported by), the suction force by the blowing fan 101 acts on the middle plate through the suction hole 26, the hole 24 and the suction gap 27, so that the middle plate is separated from the conveying belt 11 It can be moved to the discharge position by the conveying belt 11 without.

On the other hand, the conveying belt 11 is the suction chamber of the middle plate when the middle plate is in close contact with the conveying belt 11 located below the suction chamber 102 by the operation of the first and second air cylinders 14 and 23. It should have adequate tension to improve the adhesion to the bottom surface of 102. The tension of the conveying belt 11 is adjusted by the belt tension adjusting means 6 provided on the support 100a.

As shown in FIG. 1, the belt tension adjusting means 6 includes a belt pulley 31a on which the transport belt 11 is installed, a bracket member 42 and a pin 43 for rotatably supporting the belt pulley 31a. Tension plate for adjusting the tension of the transport belt 11 by pivoting the support plate 44 for supporting the bracket member 42 so as to be pivotable and the bracket member 42 about the pin 44. Includes 45. The bracket member 42 is pivoted about the pin 44 by rotating the tension adjusting bolt 45 in the required direction, and according to the pivot of the bracket member 42, the conveyance belt ( The tension of the conveyance belt 11 is adjusted by moving the belt pulley 31a which 11 is installed to left and right.

Although the conveying belt 11 has a constant tension by the tension adjusting means 6, the conveying belt 11 is sag down by its own weight. This sagging of the conveying belt 11 is caused by the lower surface of the suction chamber 102 of the middle plate when the middle plate is brought into close contact with the lower surface of the suction chamber 102 by the operation of the first and second air cylinders 14 and 23. The adhesiveness to can be reduced. Thus, in order to improve the adhesion to the lower surface of the suction chamber 102 of the middle plate, a cylindrical conveying belt guider 7 is provided which is installed in the suction chamber 102 adjacent to the tension adjusting means 6.

The conveying belt guider 7 supports the conveying belt 11 to bring the conveying belt 11 into close contact with the lower surface of the suction chamber 102, and does not interfere with the conveying of the conveying belt 11. It is installed to rotate according to the conveyance. Therefore, the conveying belt 11 is conveyed toward the discharge table lift 9 in a state of being in close contact with the lower surface of the suction chamber 102, and by the operation of the first and second air cylinders 14, 23. When the middle plate is in close contact, the middle plate is easily brought into close contact with the lower surface of the suction chamber 102 to maintain the gripping force for holding the middle plate.

When the heavy plate gripped by the suction force of the blower fan 101 through the suction chamber 102 is conveyed to the top of the discharge table lift 9 by the conveying belt 11, the heavy plate conveyed by the conveying belt 11. The front end of the middle plate is sensed by the proximity sensor 28 installed on the upper portion of the discharge table lift 9. When the front end of the midboard conveyed to the discharge table lift 9 by the transport belt 11 is detected by the proximity sensor 28, the clutch 25 interrupts transmission of power from the motor 8 to the transport belt 11. At the same time, the brake 29 installed on the shaft 30 together with the clutch 25 and the pulley 31 is actuated to brake the belt pulley 31 for driving the carrying belt 11.

The brake 29 is actuated simultaneously with the operation of the clutch 25 so that the intermediate plate carried by the conveying belt 11 to the discharge table lift 9 can be stopped at the correct position on the top of the discharge table lift 9. On the other hand, the clutch 25 used in the plywood manufacturing apparatus for manufacturing plywood of the present invention, the sensors 6a, 6b; 7a, 7b and the proximity sensor (so as to operate correctly in relation to the conveying operation of the conveying belt 11 described above). An air clutch or an electromagnetic clutch that is precisely controlled by the signal of 28 may be used. The brake 29 may also be an air brake or an electromagnetic brake.

At the top of the discharge table lift 9 is provided a middle plate drop means 12 for dropping the heavy plate carried by the conveying belt 11 onto the discharge table lift 9. As shown in FIG. 8, the middle plate dropping means 12 includes a third air cylinder 40, a rod member 47 provided at an end of the piston 40a of the third air cylinder 40, and a rod member. And a guide bar 47 for guiding the lifting motion of the rod member 47 when the 47 is lifted by the third air cylinder 40. The third air cylinder 40 operates to brake power to the transport belt 11 and brake the transport belt 11 by the signal of the proximity sensor 28 when the mid-plate reaches the top of the discharge table lift 9. Is operated simultaneously with the operation of the clutch 25 and the brake 29.

Thus, as described above, in the state in which the middle plate is adsorbed to the lower surface of the suction chamber 102, the middle plate is transported from the table lifts 2, 3 to the top of the discharge table lift 9 by the conveying belt 11. When it is, the midplate is sensed by the proximity sensor 28 and the clutch 25 and the brake 29 are actuated by the signals of the proximity sensor 28 to position the midplane on top of the discharge table lift 9. The conveyance belt 11 is stopped. Simultaneously with the stop of the conveying belt 11, the rod member 47 is lowered by the lowering operation of the third air cylinder 40, and the upper plate of the discharge table lift 9 is caused by pressing the upper plate of the middle plate. To fall.

Referring to the operation of the heavy plate combination device for manufacturing plywood according to the present invention having the configuration as described above in more detail as follows:

On the table lifts 2, 3 located below the suction chamber 102 between the struts 100, 100a, heavy plates made of different kinds of wooden boards are loaded by forklifts, respectively. When the midboard is loaded to the table lifts 2,3 by a forklift at a predetermined height, the table lifts 2,3 are carried out until the loaded midboards are detected by the sensors 6a, 6b; 7a, 7b. Is raised.

If the height of the table lifts 2, 3 is raised until the mid-plate is detected by the sensors 6a, 6b; 7a, 7b, first one of the hollow bars 16, 16a, for example hollow bar The first air cylinder 14 for driving 16 and the second air cylinder 23 for driving the suction member 22 are lowered toward the table lift 3. Accordingly, the hollow bar 16 and the suction member 22 are lowered toward the middle plate loaded on the table lift 3, and both side portions of the middle plate are the suction cup 17 and the pin member 18 provided on the hollow bar 16. ), And the central portion of the middle plate is sucked and held by the suction member (22).

When both sides of the middle plate are gripped by the suction cup 17 and the pin member 18, the impact due to the contact between the middle plate and the suction cup 17 and the pin member 18 is reduced by the piston of the first air cylinder 14. It is absorbed by the buffer spring 19 provided in the edge part of (15). When the middle plate is adsorbed and gripped by the suction cup 17, the pin member 18 and the suction member 22, the first and second air cylinders 14 and 23 have the upper surface of the middle plate of the suction chamber 102. It is raised until it contacts the carrying belt 11 provided in the lower surface.

When the middle plate is brought into close contact with the lower portion of the transport belt 11 by the lifting operation of the first and second air cylinders 14 and 23, the suction cup 17 and the pin member 18 provided on the hollow bar 16 are provided. 6 is received into the receiving groove 50 as shown in FIG. 6, in which the middle plate is caught by the lower surface of the suction chamber 102, whereby the middle plate is the suction cup 17 and the pin member 18. Separated from.

However, although the middle plate is separated from the suction cup 17 and the fin member 18 as described above, the middle plate is provided with suction holes 26 and 26a and suction gaps formed in the lower surface of the suction chamber 102. 27) and the suction chamber 102 by the suction force of the blower fan 101 which acts through the hole 24 formed in the conveyance belt 11, and the suction force of the suction member 22 which sucks and grips the center part of the middle plate. And remain in close contact with the lower surface of the conveyance belt 11.

As described above, when the heavy plate is kept in close contact with the lower surface of the conveying belt 11, the conveying belt 11 is easily attached to the lower surface of the suction chamber 102 by the action of the conveying belt guider 7. While being in close contact, the middle plate is in close contact with the conveyance belt 11, and at the same time, the power of the motor 8 for driving the conveyance belt 11 is transmitted to the conveyance belt 11 by the operation of the clutch 25. Is conveyed to the top of the discharge table lift 9 by the drive of the conveying belt 11. While the heavy plate is transported to the top of the discharge table lift 9, the heavy plate is subjected to the suction force acting through the holes 24 formed in the suction hole 26, the suction gap 27 and the conveying belt 11 as described above. As a result, the state kept in close contact with the suction chamber 102 and the transport belt 11 is maintained.

When the middle plate is transported to the position of the upper portion of the discharge table lift 9 by the conveying belt 11, the front end of the middle plate is formed by the proximity sensor 28 installed on the upper portion of the discharge table lift 9 as described above. By detecting the front end of the clutch 25 operates to block the transmission of power from the motor 8 to the conveying belt 11 and at the same time to brake the belt pulley 31 for driving the conveying belt 11. The brake 29 is activated for this purpose.

By operation of the brake 29, the heavy plate carried by the conveying belt 11 to the discharge table lift 9 is stopped at the correct position on the upper side of the discharge table lift 9, and the medium plate dropping means 12 is in close proximity. In response to a signal from the sensor 28 it is operated to drop the heavy plate to the discharge table lift 9.

That is, the middle plate drop means 12 is the third air cylinder 40 is the clutch 25 and the brake 29 when the middle plate reaches the upper portion of the discharge table lift (9) by the signal of the proximity sensor 28 It works simultaneously with By the operation of the third air cylinder 40, the rod member 47 provided at the end of the piston 40a of the third air cylinder 40 strikes the upper portion of the middle plate, thereby lowering the lower surface of the suction chamber 102. The heavy plate adsorbed to the drop falls to the upper portion of the discharge table lift 9 and is loaded.

By dropping the middle plate from the upper position of the discharge table lift 9 to the discharge table lift 9, the proximity sensor 28 for detecting the presence or absence of the middle plate detects the absence of the middle plate, and signals to the proximity sensor 28. By this, the table lift 3 is raised by a predetermined height until the middle plate loaded by the sensors 7a and 7b is detected.

Then, the first air cylinder 14 for driving the hollow bar 16a and the second air cylinder 23 for driving the suction member 22 face the table lift 2 so as to grip the next middle plate. Descending operation. Therefore, the above process for carrying the heavy plate loaded in the table lift 3 is performed.

Therefore, when the heavy plates stacked on the discharge table lift 9 are stacked and stacked with different types of heavy plates stacked on the table lifts 2, 3, and loaded on the discharge table lift 9 of a predetermined amount, It is transported and combined by means of a transport such as a forklift to a midboard combination position of the midboard loaded on the discharge table lift 9.

As described above, according to the plywood manufacturing apparatus for manufacturing plywood according to the present invention, in order to manufacture the plywood, the combination of the middle plates located in the middle of the plywood is automated, so that the middle plates can be combined with less labor, while the combination time of the middle plates And as the efficiency is increased, the combined cost of the heavy plate can be made low.

On the other hand, the present invention is not limited to the above-described specific preferred embodiments, and various changes can be made by those skilled in the art without departing from the gist of the invention claimed in the claims. will be.

Claims (10)

A frame having a pair of struts, and a suction chamber supported by the strut and having a suction force formed by a blowing fan provided on an upper portion of the strut; A middle plate stacking portion positioned below the suction chamber between the pillars and including a plurality of table lifts each of which is loaded with a heavy plate made of different kinds of wooden boards; A middle plate conveying unit which is installed in the suction chamber and alternately conveys and stacks the middle plates loaded on the respective table lifts from the loading position to the discharge position; And a discharge table lift for supporting the middle plates alternately stacked by the middle plate conveying unit. The heavy plate holding unit according to claim 1, wherein the middle plate carrying unit is driven by a vacuum pump installed in the suction chamber, and the middle plate holding unit moves up and down a predetermined distance to hold the middle plate loaded on the middle plate loading unit, and one of the props. A conveying means for conveying to an upper portion of the discharge table lift when the middle plate driven by a motor provided on the side support and held by the middle plate holding means is raised to the lower surface of the suction chamber, A heavy plate combining device for manufacturing plywood, characterized in that it comprises a middle plate dropping means for dropping the heavy plate carried by the carrying means to the discharge table lift. 2. The apparatus of claim 1, wherein the middle plate gripping means comprises: a plurality of pairs of hollow bars actuated by a first air cylinder driven by the vacuum pump; A plurality of suction cups respectively communicating with the inside of the hollow bar and installed under the hollow bar; A plurality of pin members provided between the suction cups to penetrate the upper portion of the middle plate to grip the middle plate, and to cushion shock caused by the contact between the suction cup and the middle plate when the hollow bar is lowered. A buffer spring installed at the end; Located between the hollow bars and operated by a second air cylinder which is operated simultaneously with the first air cylinder for operating the hollow bar, a plurality of suction holes are formed at the bottom to grip the center of the middle plate by the suction force from the suction chamber. A heavy plate combination device for manufacturing plywood, comprising a pair of suction members. 4. The conveying belt according to claim 3, wherein the medium conveying means includes a motor installed in one of the pillars, and a plurality of holes formed by the motor, the plurality of holes having the same pitch as the suction hole formed in the lower portion of the suction chamber. Wow; A clutch for transmitting and interrupting power of the motor to the carrying belt; And a brake for braking driving of the carrying belt when the power of the motor is cut off by the clutch. The plywood manufacturing device for plywood according to claim 4, wherein the clutch is an air clutch. The plywood manufacturing device for plywood according to claim 4, wherein the clutch is an electromagnet clutch. 2. The suction chamber according to claim 1, wherein the suction chamber has a plurality of suction holes and suction slots such that the middle plate is adsorbed to the lower surface of the suction chamber when the middle plate is held by the middle plate holding means and raised to the lower surface of the suction chamber. Heavy plate combination device for producing plywood, characterized in that formed on the bottom. 5. The belt pulley of claim 4, further comprising a belt tension adjusting means for adjusting the tension of the conveying belt, wherein the belt tension adjusting means comprises: a belt pulley on which the conveying belt is installed, a bracket member rotatably supporting the belt pulley, And a support plate for pivotally supporting the bracket member by a pin, and an adjusting bolt for pivoting the bracket member about the pin. 4. The pin member of claim 3, wherein the pin member includes a cylindrical body welded and fixed to the hollow bar, a screw screw constituting the pin, and a cap member coupled to the cylindrical body to hold the screw screw in place. Heavy plate combination device for plywood manufacture. 5. The plywood of claim 4, wherein the motor, clutch and brake are operated by a proximity sensor that senses the position of the midboard carried by the conveyance belt, wherein the proximity sensor is located above the discharge table lift. Heavy plate combination device for manufacturing.