CN115780135A - Spraying glueing equipment of plywood - Google Patents

Abstract

The invention discloses spraying and gluing equipment for a plywood, and belongs to the field of spraying devices. The method comprises the following steps: the wood board gluing device comprises a first conveying part, a gluing part and a second conveying part, wherein the first conveying part, the gluing part and the second conveying part are sequentially arranged along the conveying direction of a production line, the gluing part comprises a transition grid plate and a spraying device positioned on the upper side of the transition grid plate, the first conveying part is used for conveying a wood board to be glued to the transition grid plate, and the second conveying device is used for conveying the wood board glued by the spraying device to the next station; first conveying department with second conveying department is respectively including the conveyer belt that is used for supporting the plank, be equipped with a plurality of through-holes on the conveyer belt, the conveyer belt passes through-hole and negative pressure suction device intercommunication. The invention solves the problem of poor spraying uniformity of the existing glue applying equipment.

Description

Spraying glueing equipment of plywood

Technical Field

The invention relates to the field of spraying devices, in particular to spraying and glue applying equipment for plywood processing.

Background

The plywood is one of three kinds of artificial boards as one of furniture materials and may be used as material for airplane, ship, train, automobile, building, packing box, etc. The plywood is a three-layer or multi-layer board which is formed by gluing through an adhesive, a plurality of single boards are required to be compounded through the adhesive in the processing process of the plywood, and the adhesive is generally applied in a coating or spraying mode to realize a gluing process.

The glue is applied by adopting a pressure spraying mode, so that better glue application uniformity can be ensured, and the glue is more and more widely applied. Generally, a pressure spraying glue applying device adopts a conveying device to drive a wood board to be sprayed to move along the running direction of a production line, the wood board is moved to the lower side of a spraying device to be sprayed in an atomizing mode, and then the wood board is conveyed to the next station through the conveying device. During glue application, the moving speed of the wood board to be sprayed needs to be kept constant to ensure the spraying uniformity. However, in the actual production process, because the thickness of the wood board is thin, the wood board is easy to stall when passing through an unpowered area where the spraying device is located, and the spraying uniformity is poor.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is that the spraying uniformity of the existing glue applying equipment is poor.

In order to solve the technical problems, the invention provides the following technical scheme:

a spraying glueing equipment of plywood includes: the wood board gluing device comprises a first conveying part, a gluing part and a second conveying part, wherein the first conveying part, the gluing part and the second conveying part are sequentially arranged along the conveying direction of a production line, the gluing part comprises a transition grid plate and a spraying device positioned on the upper side of the transition grid plate, the first conveying part is used for conveying a wood board to be glued to the transition grid plate, and the second conveying device is used for conveying the wood board glued by the spraying device to the next station; the first conveying part and the second conveying part respectively comprise a conveying belt used for supporting the wood board, a plurality of through holes are formed in the conveying belt, and the conveying belt is communicated with the negative pressure suction device through the through holes.

In some embodiments of the present invention, the negative pressure suction device comprises: the suction box body is positioned on the lower side of the conveying belt, the upper surface of the suction box body is provided with a plurality of suction holes, and the suction holes correspond to the through holes in the conveying belt; and the suction power device is communicated with the suction box body through a pipeline.

In some embodiments of the present invention, the first transport unit and the second transport unit each include: the conveying device comprises a support frame, a conveying roller and a conveying belt, wherein the conveying roller is rotatably arranged on the support frame, the conveying belt is arranged on the conveying roller, and the conveying roller drives the conveying belt to move under the action of a second driving device.

In some embodiments of the present invention, the first conveying unit further includes a pinch roller mechanism, the pinch roller mechanism includes a pinch roller supporting seat mounted on the supporting frame, and a pinch roller pivotally connected to the pinch roller supporting seat through a supporting rod, and the pinch roller abuts against the conveying belt.

In some embodiments of the present invention, the transition grid is fixed on the support frame of the first conveying part through a first connection plate, and the transition grid is fixed on the support frame of the second conveying part through a second connection plate.

In some embodiments of the invention, the height of the conveyor belt of the first conveying part is greater than the height of the conveyor belt of the second conveying part, the transition grid plate is lower than the height of the conveyor belt of the first conveying part, and the transition grid plate is higher than or level with the conveyor belt of the second conveying part.

In some embodiments of the present invention, the spray coating device comprises: the spraying cover body is provided with an opening at the lower side, a plurality of spraying holes are formed in the upper side of the spraying cover body, and an electronic spray gun is inserted into the spraying holes; the spray rod is positioned on the upper side of the spraying cover body, and a plurality of interfaces communicated with the electronic spray gun through a pipeline are arranged on the spray rod; and the suction hood is arranged on the spraying hood body and is used for sucking the atomized adhesive in the area between the spraying hood body and the wood board to be glued.

In some embodiments of the present invention, the spraying cover body includes a first plate body close to the first conveying part and a second plate body close to the second conveying part, the suction cover is detachably mounted on the first plate body and the second plate body, and a bottom end surface of the suction cover extends to a bottom end of the spraying cover body.

In some embodiments of the invention, the bottom of the suction hood is provided with an obliquely arranged flow guiding grid plate, and the flow guiding grid plate is used for guiding the adhesive condensed in the suction hood to a recycling tank positioned on the lower side of the transition grid plate through the transition grid plate.

In some embodiments of the present invention, a blanking port is disposed at one side end of the recycling tank, a recycled material accommodating box is disposed below the blanking port, a discharge port communicated with the recycling pipeline is disposed below the recycled material accommodating box, a drawer filter is disposed on the recycled material accommodating box, the drawer filter is removably mounted on the recycled material accommodating box, and an adhesive flowing out of the blanking port enters the recycling pipeline through the discharge port after being filtered by the drawer filter

Compared with the prior art, the technical scheme of the invention has the following technical effects:

in the spraying and gluing equipment for the plywood, provided by the invention, the first conveying part is used for conveying the wood plate to be glued to the transition grid plate, the spraying equipment is used for spraying the wood plate passing through the transition grid plate, the second conveying device is used for conveying the glued wood plate to the next station, a plurality of through holes are formed in the conveying belts of the first conveying part and the second conveying part, and the conveying belts are communicated with the negative pressure suction device through the through holes, so that the wood plate passing through the conveying belts is tightly abutted against the conveying belts under the action of the negative pressure suction device, the friction force between the wood plate and the conveying belts is increased, the problem of stalling when the wood plate passes through the unpowered transition grid plate is avoided, and the spraying uniformity of the wood plate is better.

Drawings

The objects and advantages of the present invention will be understood by the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic diagram of one embodiment of a spray glue applicator for plywood according to the present invention;

FIG. 2 is a schematic view of the first conveying section, the transition grid, and the second conveying section of the plywood spray applicator apparatus of the present invention;

FIG. 3 is a schematic view of the construction of a transition grid in a spray glue applicator for plywood according to the present invention;

FIG. 4 is a schematic view of a first conveyor section of a plywood spray applicator apparatus of the present invention;

FIG. 5 is a schematic view of a second suction device of the spray gluing device for plywood according to the present invention;

FIG. 6 is a schematic view showing the structure of a pinch roller mechanism of a spraying and gluing device for plywood according to the present invention

FIG. 7 is a schematic view of a spray coating device of the spray coating and glue applying apparatus for plywood according to the present invention;

FIG. 8 is a schematic view of the glue application and recycling sections of the spray glue application apparatus for plywood of the present invention;

FIG. 9 is a schematic view of the recycling section of the spray glue applicator for plywood according to the present invention;

figure 10 is a cross-sectional view of the recovery section of the spray glue applicator for plywood according to the invention.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Fig. 1 shows a specific embodiment of a spray application device for plywood according to the invention (hereinafter referred to as application device) for supplying a wood board to be applied with MDI adhesive (the applied wood board is used, for example, for plywood production, etc.).

Referring to fig. 1 and 2, the sizing apparatus includes: the glue applying device comprises a first conveying part 10A, a glue applying part 20 and a second conveying part 10B which are sequentially arranged along the conveying direction of a production line, wherein the glue applying part 20 comprises a transition grid plate 21 and a spraying device 22 positioned on the upper side of the transition grid plate 21; the first conveying part 10A conveys the wood boards to be glued to the transition grid plate 21, the spraying device 22 is used for spraying and gluing the wood boards on the transition grid plate 21, and the second conveying part 10B is used for conveying the glued wood boards to the next station. The first conveying unit 10A and the second conveying unit 10B each include: the conveying belt 13 is used for supporting the wood board, a plurality of through holes 13a are formed in the conveying belt 13, and the conveying belt 13 is communicated with a negative pressure suction device (not shown in the figure) through the through holes 13 a. Thus, the wood boards passing through the conveyer belt 13 are tightly abutted against the conveyer belt 13 under the action of the negative pressure suction device, the friction force between the wood boards and the conveyer belt 13 is increased, and the wood boards are prevented from being tightly abutted against the conveyer belt 13

The problem of stalling of the wood board when the wood board passes through the unpowered transition grid plate 21 is solved, and the spraying uniformity of the wood board is better 5.

Referring to fig. 4, in the sizing apparatus of the present invention, each of the first conveying section 10A and the second conveying section 10B includes: the conveying device comprises a support frame 11, a conveying roller 12 rotatably arranged on the support frame 11 and a conveying belt 13 arranged on the conveying roller 12, wherein the conveying roller 12 drives the conveying belt 13 to move under the action of a second driving device 16.

0 specifically, as shown in fig. 4 and 5, the negative pressure suction device is positioned below the conveying belt 13

A lateral suction box 14 and a suction power unit (not shown in the figures) communicating with said suction box 14 through a duct. The upper surface of the suction box 14 is provided with a plurality of suction holes 14a, the suction holes 14a correspond to the through holes 13a on the conveyor belt 13, and the lower side of the suction box 14 is provided with a suction port 14b for communicating with the suction power device.

5 to further increase the friction between the wood board and the conveyor belt 13 so that the wood board passes smoothly through the conveyor belt

In the area of the transition grid plate 21, as shown in fig. 1 and 6, the first conveying part 10A further includes a pressing wheel mechanism 15, the pressing wheel mechanism 15 is disposed near the glue applying part 20, the pressing wheel mechanism 15 includes a pressing wheel supporting seat 151 mounted on the supporting frame 11, and a supporting rod 152 pivotally connected to the pressing wheel supporting seat

At least one pressure wheel 153 on the wheel supporting seat 151, wherein the pressure wheel 153 abuts against the conveying belt 13. 0 an elastic part 154 is arranged between the pinch roller 153 and the pinch roller supporting seat 151, and the elastic force of the elastic part 154 acts on the pinch roller 153 to keep pressing the pinch roller on the conveying belt 13. In order to prevent the pressing wheel 153 from deforming the wood board, the pressing wheel 153 is a rubber wheel, and when the wood board moves to the area where the pressing wheel 153 is located under the action of the conveying belt 13 of the first conveying part 10A, the wood board moves from between the pressing wheel 153 and the conveying belt 13

The press wheels 153 are used to keep the boards against the conveyor belt 135 under the action of the elastic members 154, so as to prevent the boards from stalling when passing through the transition grid 21.

Referring to fig. 2, in the glue applying apparatus of the present invention, the height of the conveyor belt 13 of the first conveying portion 10A is greater than the height of the conveyor belt 13 of the second conveying portion 10B, and the height of the transition grid 21 is lower than the height of the conveyor belt 13 of the first conveying portion 10A, so as to ensure that the wood board smoothly passes through the transition section where the first conveying portion 10A is connected to the transition grid 21, and the transition grid 21 is higher than or flush with the conveyor belt 13 of the second conveying portion 10B, so as to ensure that the wood board smoothly passes through the transition section where the transition grid 21 is connected to the second conveying portion 10B, thereby preventing the occurrence of the phenomenon of wood board blocking and ensuring the glue applying effect of the wood board.

Referring to fig. 7, a spraying device 22 of a sizing apparatus according to a specific embodiment of the present invention is shown, the spraying device 22 includes a spraying cover 221 with an opening at a lower side and a spraying rod 222 located at an upper side of the spraying cover 221, the upper side of the spraying cover 221 is provided with a plurality of spraying holes 221a, the spraying holes 221a are plugged with electronic spray guns 224, and the spraying rod 222 is provided with a plurality of connectors connected with the spray guns 224; more specifically, the plurality of electronic spray guns 224 are arranged in a row along the width direction of the spraying cover body 221, the spraying cover body 221 and the transition grid plate 21 are arranged at intervals, when the board to be sprayed moves onto the transition grid plate 21 under the action of the first conveying part 10A, the electronic spray guns 224 are controlled to perform spraying treatment, so that the MDI adhesive is sprayed onto the surface of the board along the width direction, and is uniformly sprayed onto the whole surface of the board along with the uniform movement of the board.

As shown in fig. 7, a suction hood 223 is further mounted on the spraying hood body 221, and the suction hood 223 is finally connected to a first suction device (not shown) for sucking atomized adhesive in the area between the spraying hood body 221 and the board to be glued. More specifically, the spraying cover body 221 includes a first plate body 221B close to the first conveying portion 10A and a second plate body 221c close to the second conveying portion 10B, the first plate body 221B and the second plate body 221c are detachably connected with a plurality of the suction covers 223, and bottom end faces of the plurality of the suction covers 223 cover the width of the transition grid 21 along a direction perpendicular to the running direction of the wood board.

The bottom end face of the suction hood 223 extends to the bottom end of the spraying hood 221, and the suction hood 223 is formed into an approximately trapezoidal hood structure with a wide bottom and a narrow top, so that the air flow can be sucked more smoothly, and the energy consumption of the first suction device is reduced.

As shown in fig. 7, the bottom of the suction hood 223 is provided with an inclined flow guiding grid 223a, and the flow guiding grid 223a is used for guiding the large liquid drops formed after the atomized adhesive in the suction hood 223 is condensed to the transition grid 21.

The sizing device further comprises a recovery part 50 positioned on the lower side of the transition grid 21 and used for recovering the redundant liquid adhesive during spraying of the spraying device 22 and guiding the redundant liquid adhesive to a recovery pipeline, and the adhesive in the recovery pipeline is conveyed to the feeding device side again through a filtering device, a recovery pump and other devices.

As shown in fig. 8 to 10, the recycling portion 50 includes a recycling tank 51, a blanking port 51a is disposed at an end of one side of the recycling tank 51, and a recycling material accommodating box 52 located below the blanking port 51a, a discharge port 52a communicated with a recycling pipeline is disposed at a lower side of the recycling material accommodating box 52, a drawer filter 53 is disposed on the recycling material accommodating box 52, and the drawer filter 53 is removably mounted on the recycling material accommodating box 52. After being sprayed, the spray device 22 generates large droplets of condensed atomized adhesive in the spray cover body 221 and between the spray cover body 221 and the transition grid plate 21, and the droplets fall into the recovery tank 51 through the transition grid plate 21, further flow into the recovered material accommodating box 52 through the blanking port 51a, are filtered by the drawer filter 53, and flow to the lower part of the recovered material accommodating box 52 and enter the recovery pipeline through the discharge port 52 a. After a period of production, the drawer filter 53 may be withdrawn for cleaning. By adopting the recovery part 50, the adhesive can be recycled, the pollution of the adhesive to production equipment is reduced, and the filter is convenient and quick to clean by adopting a drawer type filter structure.

As shown in fig. 9 and 10, a screw shaft 54 is provided in the recovery tank 51, and the screw shaft 54 is rotated by a first driving device 55 to feed the adhesive to the drop port 51 a.

Specifically, the recovery tank 51 is a v-shaped tank, the bottom of the recovery tank 51 is inclined in the horizontal direction, and the blanking port 51a is located at the lowest end of the recovery tank 51.

Specifically, in one embodiment, the transition grid 21 is fixed to the supporting frame 11 of the first conveying part 10A through a first connecting plate 211, and the transition grid 21 is fixed to the supporting frame 11 of the second conveying part 10B through a second connecting plate 212. More specifically, the upper surface of the first connecting plate 211 is flush with the conveyor belt 13 of the first conveying portion 10A, the lower end of the first connecting plate 211 is fixedly connected with the transition grid 21, and the upper surface of the second connecting plate 212 is flush with the upper surface of the transition grid 21 and the conveyor belt 13 of the second conveying portion 10B.

Specifically, as shown in fig. 3, in another embodiment, the transition grate 21 is connected to the recovery tank 51 by two support plates 215. More specifically, the transition grid plate 21 includes support bar 213 and connect a plurality of bars 214 between two support bars 213 that relative parallel arrangement, two the downside of support bar 213 is equipped with the backup pad 215 of perpendicular to support bar 213 respectively, backup pad 215 peg graft in recovery tank 51 is along the wall of fore-and-aft direction, has realized the reliable support of transition grid plate 21 on the one hand, and on the other hand can also realize the sealing connection between transition grid plate 21 and the recovery tank 51, avoids atomizing adhesive to spill over along the gap between the two.

More specifically, the first connecting plate 211 and the second connecting plate 212 are respectively welded to two supporting bars 213.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.

Claims (10)

1. The utility model provides a spraying glueing equipment of plywood which characterized in that includes:

the wood board gluing device comprises a first conveying part, a gluing part and a second conveying part, wherein the first conveying part, the gluing part and the second conveying part are sequentially arranged along the conveying direction of a production line, the gluing part comprises a transition grid plate and a spraying device positioned on the upper side of the transition grid plate, the first conveying part is used for conveying a wood board to be glued to the transition grid plate, and the second conveying device is used for conveying the wood board glued by the spraying device to the next station;

the first conveying part and the second conveying part respectively comprise a conveying belt used for supporting the wood board, a plurality of through holes are formed in the conveying belt, and the conveying belt is communicated with the negative pressure suction device through the through holes.

2. A spray coating apparatus for plywood according to claim 1 wherein said negative pressure suction means comprises:

the suction box body is positioned on the lower side of the conveying belt, the upper surface of the suction box body is provided with a plurality of suction holes, and the suction holes correspond to the through holes in the conveying belt;

and the suction power device is communicated with the suction box body through a pipeline.

3. A spray coating apparatus for plywood according to claim 1 wherein said first conveying section and said second conveying section each comprise: the conveying device comprises a support frame, a conveying roller and a conveying belt, wherein the conveying roller is rotatably arranged on the support frame, the conveying belt is arranged on the conveying roller, and the conveying roller drives the conveying belt to move under the action of a second driving device.

4. A spraying and applying apparatus for plywood according to claim 3 wherein said first conveying means further includes a pinch roller mechanism, said pinch roller mechanism including a pinch roller support base mounted on said support frame, and a pinch roller pivotally connected to said pinch roller support base by a support rod, said pinch roller abutting on said conveyor belt.

5. A spraying and gluing device for plywood as claimed in claim 1, wherein said transition grid is fixed to said support frame of said first conveying section by a first connecting plate, and said transition grid is fixed to said support frame of said second conveying section by a second connecting plate.

6. A spraying and gluing device for plywood as claimed in claim 1, wherein the height of the conveyor belt of said first conveying section is greater than the height of the conveyor belt of said second conveying section, said transition grid is lower than the height of the conveyor belt of said first conveying section, and said transition grid is higher than or level with the conveyor belt of said second conveying section.

7. A spray coating apparatus for plywood according to claim 1 wherein said spray coating means comprises:

the spraying cover body is provided with an opening at the lower side, a plurality of spraying holes are formed in the upper side of the spraying cover body, and an electronic spray gun is inserted into the spraying holes;

the spray rod is positioned on the upper side of the spraying cover body, and a plurality of interfaces communicated with the electronic spray gun through a pipeline are arranged on the spray rod;

and the suction hood is arranged on the spraying hood body and is used for sucking the atomized adhesive in the area between the spraying hood body and the wood board to be glued.

8. A spraying and glue applying apparatus for plywood as claimed in claim 7, wherein said spraying cover body includes a first plate body adjacent to said first conveying portion and a second plate body adjacent to said second conveying portion, said suction cover being detachably mounted to said first plate body and said second plate body, a bottom end surface of said suction cover extending to a bottom end of said spraying cover body.

9. A spraying and gluing device for plywood as claimed in claim 8, wherein said suction hood is provided at its bottom with an obliquely arranged deflector grid for deflecting the glue condensed in the suction hood through said transition grid into a recovery trough located on the underside of said transition grid.

10. The spraying and gluing equipment for plywood of claim 9, wherein a blanking port is formed in one side end of the recovery tank, a reclaimed material containing box is arranged on the lower side of the blanking port, a discharge port communicated with a recovery pipeline is formed in the lower side of the reclaimed material containing box, a drawer filter is arranged on the reclaimed material containing box, the drawer filter is installed on the reclaimed material containing box in a telescopic manner, and an adhesive flowing out of the blanking port enters the recovery pipeline through the discharge port after being filtered by the drawer filter.

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