CN115847561A - Spraying glueing equipment of plywood - Google Patents

Abstract

The invention discloses spraying and gluing equipment for 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; the first conveying part and the second conveying part respectively comprise conveying belts used for supporting wood plates, the height of the conveying belt of the first conveying part is larger than that of the conveying belt of the second conveying part, the transition grid plate is lower than that of the conveying belt of the first conveying part, and the transition grid plate is higher than or parallel to the conveying belt of the second conveying part. The invention solves the problem of cardboard in the production process of the existing sizing 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 common furniture materials, and can be used as a functional material for airplanes, ships, trains, automobiles, buildings, packing cases and the like. The plywood is a three-layer or multi-layer board which is formed by gluing through an adhesive, a plurality of single sheets 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.

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 first conveying device is adopted by a pressure spraying and glue applying 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 a supporting device on the lower side of a spraying device to be sprayed, atomized and sprayed, and then the wood board is conveyed to the next station through a second conveying device. Because the supporting device part at the lower side of the spraying device belongs to an unpowered area and is connected with the first conveying device and the second conveying device, the phenomenon of clamping plates is easy to occur in the production process.

Disclosure of Invention

Therefore, the invention aims to solve the technical problem of the occurrence of the snap-gauge in the production process of the conventional sizing equipment.

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, the spraying device is used for spraying and gluing the wood board on the transition grid plate, and the second conveying device is used for conveying the glued wood board to the next station; the first conveying part and the second conveying part respectively comprise conveying belts used for supporting wood boards, the height of the conveying belt of the first conveying part is larger than that of the conveying belt of the second conveying part, the transition grid plate is lower than that of the conveying belt of the first conveying part, and the transition grid plate is higher than or flush with the conveying belt of the second conveying part.

In some embodiments of the present invention, the transition grid includes two support bars spaced apart from each other and a plurality of support bars

Connect a plurality of grids between two support bars, the grid shaping is the wave, the grid with treat 5 glueing plank point contact.

In some embodiments of the present invention, the transition grid plate is fixed to the support frame of the first conveying part through a first connection plate connected to one of the support bars, and the transition grid plate is fixed to the support frame of the second conveying part through a second connection plate connected to the other support bar.

In some embodiments of the present invention, a recycling groove is disposed at a lower side of the transition grid plate, and supporting plates are disposed at lower sides of 0 supports respectively, and the supporting plates are inserted into opposite groove walls of the recycling groove.

In some embodiments of the present invention, the conveying belt is provided with a plurality of through holes, and the conveying belt is communicated with a negative pressure suction device through the through holes, and the negative pressure suction device includes: a suction box body positioned at the lower side of the conveying belt, wherein the upper surface of the suction box body is provided with a plurality of suction holes, and the suction holes and the conveying belt

The through holes on the belt correspond in position; and the suction power device is communicated with the suction 5 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 comprises a pinch roller mechanism, and the pinch roller mechanism 0 comprises a pinch roller supporting seat mounted on the supporting frame, and a pinch roller pivotally connected to the pinch roller through a supporting rod

And the pressing wheel on the wheel supporting seat is abutted to the conveying belt.

In some embodiments of the present invention, the spray coating device includes: 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; is positioned on the spraying cover

The spray rod is arranged on the upper side of the body, and a plurality of interfaces communicated with the electronic spray gun through a pipeline are arranged on the spray rod; and 5, a suction hood arranged on the spraying hood body and 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, a blanking port is arranged at one side end of the recovery tank, the recovery tank further comprises a recovery material accommodating box positioned on the lower side of the blanking port, a discharge port communicated with a recovery pipeline is arranged on the lower side of the recovery material accommodating box, a drawer filter is arranged on the recovery material accommodating box, the drawer filter is installed on the recovery material accommodating box in a withdrawable 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.

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

in the glue-applying and spraying equipment for the plywood provided by the invention, the first conveying part is used for conveying a wood board to be glued to the transition grid plate, the spraying equipment is used for spraying the wood board passing through the transition grid plate, and the second conveying device is used for conveying the glued wood board to the next station; the transition grid plate is lower than the height of the conveying belt of the first conveying part to ensure that the wood board smoothly passes through the transition section connected with the transition grid plate of the first conveying part, and the transition grid plate is higher than or flush with the conveying belt of the second conveying part to ensure that the wood board smoothly passes through the transition section connected with the transition grid plate and the second conveying part, so that the phenomenon of wood board clamping plates is avoided, and the glue applying effect is ensured.

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 delivery section of the spray glue applicator apparatus for plywood according to the present invention;

FIG. 5 is a schematic view of a second suction device of the spray glue applicator 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 showing the construction of a spraying device in the spraying and gluing apparatus for plywood according to the present invention;

FIG. 8 is a schematic view showing the construction of a glue applying part and a recycling part of the spray glue applying apparatus for plywood according to 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 is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular 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 part 10A and the second conveying part 10B respectively comprise conveying belts 13 used for supporting wood boards, the height of the conveying belt 13 of the first conveying part 10A is larger than that of the conveying belt 13 of the second conveying part 10B, the transition grid plate 21 is lower than that of the conveying belt 13 of the first conveying part 10A so as to ensure that the wood boards smoothly pass through a transition section where the first conveying part 10A is connected with the transition grid plate 21, and the transition grid plate 21 is higher than or flush with the conveying belt 13 of the second conveying part 10B so as to ensure that the wood boards smoothly pass through the transition section where the transition grid plate 21 is connected with the second conveying part 10B, so that the phenomenon of wood board clamping plates is avoided, and the glue applying effect of the wood boards is ensured.

Specifically, the transition grid 21 includes support bars 213 disposed in parallel and a plurality of grids 214 connected between the support bars 213, the shape of the grids 214 is not unique, for example, as shown in fig. 3, the grids 214 are straight and linear grids. In another embodiment, the grid bars 214 are wave-shaped grid bars (not shown), which can make the back surface of the wood board to be glued contact with the grid bars in point, so as to reduce the contact area with the wood board and reduce the risk of the back surface of the wood board contacting with the adhesive.

Specifically, the installation and fixation manner of the transition grid 21 is not unique; in one embodiment, the transition grating 21 is fixed on the supporting frame 11 of the first conveying part 10A through a first connecting plate 211, and the transition grating 21 is fixed on the supporting frame 11 of the second conveying part 10B through a second connecting plate 212. More specifically, the first connecting plate 211 and the second connecting plate 212 are respectively welded to two supporting bars 213. 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 plate 21, and the upper surface of the second connecting plate 212 is flush with the upper surface of the transition grid plate 21 and the conveyor belt 13 of the second conveying portion 10B.

In another embodiment, as shown in fig. 3, the transition grate 21 is mounted to the recovery tank 51 at the lower side of the transition grate 21 by two support plates 215. More specifically, the lower sides of the two support bars 213 are respectively provided with a support plate 215 perpendicular to the support bars 213, and the support plates 215 are inserted into the wall surfaces of the recycling groove 51 along the front-rear direction, so that on one hand, reliable support of the transition grid plate 21 is realized, on the other hand, the sealing connection between the transition grid plate 21 and the recycling groove 51 can be realized, and the overflow of atomized adhesive along the gap between the transition grid plate 21 and the recycling groove 51 is avoided.

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. The conveying belt 13 is provided with a plurality of through holes 13a, and the conveying belt 13 is communicated with a negative pressure suction device (not shown in the figure) through the through holes 13 a. Therefore, the wood boards passing through the conveying belt 13 are tightly abutted against the conveying belt 13 under the action of the negative pressure suction device, the friction force between the wood boards and the conveying belt 13 is increased, the problem of stalling when the wood boards pass through the unpowered transition grid plate 21 is avoided, and the spraying uniformity of the wood boards is better.

Specifically, as shown in fig. 4 and 5, the negative pressure suction device includes a suction box 14 located on the lower side of the conveyor belt 13 and a suction power device (not shown in the figure) communicated with the suction box 14 through a pipeline. 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.

In order to further improve the friction force between the wood board and the conveying belt 13, so that the wood board smoothly passes through the area where the transition grid 21 is located, as shown in fig. 1 and 6, the first conveying part 10A further comprises a pinch roller mechanism 15, the pinch roller mechanism 15 is close to the gluing part 20, the pinch roller mechanism 15 comprises a pinch roller supporting seat 151 installed on the supporting frame 11, and at least one pinch roller 153 pivotally connected to the pinch roller supporting seat 151 through a supporting rod 152, and the pinch roller 153 abuts against the conveying belt 13. An elastic part 154 is arranged between the pressing wheel 153 and the pressing wheel supporting seat 151, and the elastic force of the elastic part 154 acts on the pressing wheel 153 to keep pressing against the conveying belt 13. In order to avoid the pressing wheel 153 from deforming the wood board, the pressing wheel 153 is a rubber wheel, 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 passes through the area between the pressing wheel 153 and the conveying belt 13, the pressing wheel 153 enables the wood board to be always abutted against the conveying belt 13 under the action of the elastic piece 154, and the wood board is prevented from stalling when passing through the transition grid plate 21.

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 wood board with the spraying function moves onto the transition grid plate 21 under the action of the first conveying part 10A, the electronic spray guns 224 are controlled to carry out spraying treatment, so that the MDI adhesive is sprayed onto the surface of the wood board along the width direction, and is uniformly sprayed onto the whole surface of the wood board along with the uniform movement of the wood 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 221B close to the first conveying part 10A and a second plate 221c close to the second conveying part 10B, the first plate 221B and the second plate 221c are detachably connected with a plurality of suction covers 223, and bottom end faces of the plurality of 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 surface of the suction hood 223 extends to the bottom end of the spraying hood body 221, the suction hood 223 is formed into an approximately trapezoidal hood body structure with a wide lower part and a narrow upper part, the hood body structure is convenient for sucking air flow 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 equipment further comprises a recovery part 50 positioned on the lower side of the transition grid plate 21 and used for recovering and guiding the redundant liquid adhesive to a recovery pipeline when the spraying device 22 sprays, 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. The large droplets of the atomized adhesive generated in the spraying cover 221 and between the spraying cover 221 and the transition grid 21 after spraying by the spraying device 22 fall into the recovery tank 51 through the transition grid 21, further flow into the recovered material containing box 52 through the blanking port 51a, and flow into the lower part of the recovered material containing box 52 after being filtered by the drawer filter 53 and enter the recovery pipeline through the discharge port 52 a. After a period of production, the drawer filter 53 can 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.

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, the spraying device is used for spraying and gluing the wood board on the transition grid plate, and the second conveying device is used for conveying the glued wood board to the next station;

the first conveying part and the second conveying part respectively comprise conveying belts used for supporting wood boards, the height of the conveying belt of the first conveying part is larger than that of the conveying belt of the second conveying part, the transition grid plate is lower than that of the conveying belt of the first conveying part, and the transition grid plate is higher than or flush with the conveying belt of the second conveying part.

2. A spraying and gluing device for plywood as claimed in claim 1, wherein said transition grid plate comprises two support bars arranged at intervals and a plurality of grid bars connected between the two support bars, said grid bars are formed into a wave shape, and said grid bars are in point contact with the board to be glued.

3. A spraying and gluing device for plywood according to claim 2 wherein said transition grid is secured to the support frame of said first conveying section by a first connecting plate attached to one of said support bars and said transition grid is secured to the support frame of said second conveying section by a second connecting plate attached to the other of said support bars.

4. A spraying and gluing device for plywood as claimed in claim 2, wherein a recovery groove is provided on the underside of said transition grid, support plates are provided on the underside of each of said two support bars, and said support plates are inserted into the opposite walls of said recovery groove.

5. A spraying and gluing device for plywood as claimed in claim 1, wherein said conveyor belt is provided with a plurality of through holes, said conveyor belt is communicated with a negative pressure suction device through said through holes, said 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.

6. 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.

7. A spraying and gluing device for plywood according to claim 6, wherein said first conveying part further comprises a pinch roller mechanism, said pinch roller mechanism comprises a pinch roller supporting seat mounted on said supporting frame, and a pinch roller pivotally connected to said pinch roller supporting seat by a supporting rod, said pinch roller abuts against said conveying belt.

8. 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 pipelines 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.

9. A spraying and glue applying apparatus for plywood as claimed in claim 8, 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.

10. A spraying and gluing device for plywood as claimed in claim 4, wherein a blanking opening is provided at one side end of said recycling tank, and further comprising a recycled material accommodating box located at the lower side of said blanking opening, a discharge opening communicating with the recycling line is provided at the lower side of said recycled material accommodating box, a drawer filter is provided on said recycled material accommodating box, said drawer filter is removably mounted on said recycled material accommodating box, and the adhesive flowing out of said blanking opening enters the recycling line through said discharge opening after being filtered by said drawer filter.

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