Gluing roller structure of wood sheet

Abstract

The utility model discloses a gluing roller structure of a wood sheet, a central shaft rod is coaxially fixed on a roller in a penetrating manner, the circumferential side wall of the roller is coaxially coated with an annular rubber pipe, the surface of the circumferential side wall of the annular rubber pipe is coaxially provided with a plurality of annular bulges, and the annular bulges are distributed along the circumferential direction of the annular rubber pipe at equal intervals; the height of the annular protrusions relative to the outer side wall of the annular rubber pipe ranges from 1 mm to 2 mm, and the axial groove width of an annular rubber reserving groove formed between every two adjacent annular protrusions ranges from 2 mm to 5 mm. According to the gluing roller structure of the wood sheet, through the effect of the annular protrusions, the outer side wall of the annular glue pipe can effectively gather glue liquid, a glue liquid layer is formed on the surface of the circumferential side wall of the annular glue pipe, it is guaranteed that when the gluing roller makes contact with the sheet material for gluing, enough glue liquid is applied to the sheet material, and the gluing quality is improved. The gluing effect is guaranteed, and the surface of the wood sheet can be prevented from being crushed by the roller through the arrangement of the annular glue pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of a gluing device for thin wood plates, in particular to a gluing roller structure for thin wood plates. Background Technique

[0002] Multi-layer solid wood boards are realized by hot-pressing multiple stacked thin wood plates. Before hot-pressing, each thin wood plate needs to be glued so that a uniform and thin glue layer is respectively formed on the surface of the thin wood plate. At present, the gluing of thin wood plates is realized by a gluing machine. The basic structure of the gluing machine is to pass the thin wood plate between the upper and lower roller bodies with glue liquid on the surface. When the thin wood plate passes between the upper and lower roller bodies, the upper and lower roller bodies squeeze the glue liquid onto the surface of the thin wood plate by squeezing the thin wood plate.

[0003] For example, the patent with the application number 202121362389.6 discloses a roller body structure of a gluing roller. Through the straight lines arranged on the surface of the roller body, it has the effects of uniform gluing, not damaging the veneer layer of the board, and small glue consumption. However, the premise that the technical solution of the above-mentioned prior art does not damage the veneer layer of the board is that there is no mutual pressing force between the board and the gluing roller, and only the glue liquid on the surface of the roller body is rolled on the edge of the thin wood plate to be edge-sealed. Once the above gluing roller is used for roller coating the surface of the thin wood plate, it will inevitably generate pressure on the surface of the thin wood plate. At this time, because the straight lines in the technical solution of the above-mentioned prior art are directly milled and processed on the roller body, it will inevitably cause the straight lines of the roller body to press out indentations or even directly damage the thin wood plate.

[0004] In addition, after the above-mentioned prior art technical solution is used for a long time, the straight lines will inevitably be worn, and at this time, the gluing effect of the gluing roller will be affected.

[0005] Therefore, there is a need for a gluing roller that can avoid damaging thin wood plates at present. Content of the Utility Model

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a gluing roller structure for thin wood plates. Through the action of the annular protrusions, it is convenient for the outer side wall of the annular rubber tube to effectively gather the glue liquid, so that a glue liquid layer is formed on the circumferential side wall surface of the annular rubber tube, ensuring that there is enough glue liquid to be pressed onto the board when the gluing roller contacts the board for gluing, ensuring the gluing effect, and moreover, the setting of the annular rubber tube can avoid the surface of the thin wood plate from being damaged by the roller.

[0007] The technical solution adopted by the utility model is:

[0008] Gluing roller structure for wood thin plate, including a central shaft rod, the central shaft rod is coaxially penetrated and fixed in a roller, the circumferential side wall of the roller is coaxially covered with an annular rubber tube, the circumferential side wall surface of the annular rubber tube is coaxially provided with a plurality of annular protrusions, the annular protrusions are evenly distributed at equal intervals along the circumferential direction of the annular rubber tube, the height of the annular protrusion relative to the outer side wall of the annular rubber tube is in the range of 1 to 2 millimeters, and the axial groove width of the annular glue-retaining groove formed between two adjacent annular protrusions is in the range of 2 to 5 millimeters.

[0009] A further improvement scheme of the present utility model is that end plates are coaxially provided at both axial ends of the roller, and there is an axial distance between both ends of the annular rubber tube and the end plates at the corresponding ends of the roller.

[0010] A further improvement scheme of the present utility model is that a glue liquid baffle is coaxially fixed on the outer end face of the end plate, the diameter of the glue liquid baffle is larger than the diameter of the roller and less than or equal to the diameter of the annular rubber tube, and an annular glue collecting groove is formed between the roller and the corresponding end of the annular rubber tube where the glue liquid baffle is located.

[0011] A further improvement scheme of the present utility model is that the glue liquid baffle is sleeved on the central shaft rod, and the glue liquid baffle is fixedly connected with the end plate through connecting bolts.

[0012] A further improvement scheme of the present utility model is that a sealing ring is also provided on the edge of the end face of the end plate facing the glue liquid baffle.

[0013] A further improvement scheme of the present utility model is that the bottom diameter of the annular glue collecting groove decreases along the direction facing the glue liquid baffle.

[0014] A further improvement scheme of the present utility model is that limit snap rings are coaxially provided on the circumferential side wall of the roller at positions corresponding to both ends of the annular rubber tube, and matching annular clamping grooves are provided on the inner wall of the annular rubber tube corresponding to the limit snap rings.

[0015] A further improvement scheme of the present utility model is that the outer surface of the annular rubber tube is a vulcanized layer.

[0016] A further improvement scheme of the present utility model is that annular conical arc surfaces B are respectively provided at both axial ends of the annular rubber tube corresponding to the vulcanized layer, and the diameter of the annular conical arc surface B increases along the direction away from the end where the annular rubber tube is located.

[0017] A further improvement scheme of the present utility model is that annular conical arc surfaces A are respectively provided at the outer edges of both axial ends of the annular rubber tube, and the diameter of the annular conical arc surface A increases along the direction away from the end where the annular rubber tube is located.

[0018] The beneficial effects of the present utility model are as follows:

[0019] First, in the glue - applying roller structure of the thin wood board of the present utility model, due to the effect of the annular protrusions provided on the surface of the annular rubber tube, it is convenient for the outer side wall of the annular rubber tube to effectively gather glue liquid, forming a glue - liquid layer on the circumferential side - wall surface of the annular rubber tube. This ensures that when the glue - applying roller contacts the board for glue - applying, there is sufficient glue pressure to apply the glue onto the board, guaranteeing the glue - applying effect. Moreover, the setting of the annular rubber tube can prevent the surface of the thin wood board from being pressed and damaged by the roller barrel.

[0020] Second, in the glue - applying roller structure of the thin wood board of the present utility model, glue - liquid baffles are respectively fixed on the outer sides of the end plates at both ends of the roller barrel. This not only enables annular glue - collecting grooves to be formed at the two axial ends of the circumferential side - wall of the roller barrel, facilitating the centralized dripping and collection of the excess glue liquid on the surface of the roller barrel, but also, due to the effect of the glue - liquid baffles, can prevent the glue liquid from continuing to spread along the central shaft rod towards both ends and contaminating other components, or even affecting the normal operation of the glue - applying roller.

[0021] Third, in the glue - applying roller structure of the thin wood board of the present utility model, the glue - liquid baffle is fixed to the end plate through a connecting bolt, facilitating the disassembly and assembly of the glue - liquid baffle, and thus facilitating the maintenance and replacement of the annular rubber tube.

[0022] Fourth, in the glue - applying roller structure of the thin wood board of the present utility model, the bottom diameter of the annular glue - collecting groove decreases along the direction facing the glue - liquid baffle. When the excess glue liquid located above the roller barrel is in the annular glue - collecting groove, the excess glue liquid can, under the action of gravity, quickly move away from the side of the annular rubber tube and drip downward centrally, allowing more excess glue liquid on the surface of the annular rubber tube to continue to enter the annular glue - collecting groove; when the excess glue liquid located below the roller barrel is in the annular glue - collecting groove, the excess glue liquid can, under the action of gravity, move closer to the side of the annular rubber tube, and then flow along the end of the annular rubber tube and the annular conical arc surface A and annular conical arc surface B to the position of the annular protrusion of the annular rubber tube and gather the glue liquid through the annular protrusion, thus ensuring the amount of glue liquid on the surface of the roller barrel.

[0023] Fifth, in the glue - applying roller structure of the thin wood board of the present utility model, through the setting of the limit snap - ring and the annular card slot, the annular rubber tube is axially fixed relative to the roller barrel, preventing the annular rubber tube from experiencing axial movement during the glue - applying process and ensuring the glue - applying effect on the thin wood board.

[0024] Sixth, in the glue - applying roller structure of the thin wood board of the present utility model, by forming a vulcanized layer on the outer surface of the annular rubber tube, the strength and wear resistance of the outer surface of the circumferential side - wall of the annular rubber tube are improved, extending the service life of the annular rubber tube, and also ensuring the strength of the annular protrusions and the use effect of the annular protrusions.

[0025] Seventh, in the glue - applying roller structure of the thin wood board of the present utility model, through the setting of the annular conical arc surface A and the annular conical arc surface B, it is not only convenient for the excess glue liquid above the roller barrel to flow towards the annular glue - collecting grooves at the two axial ends of the roller barrel, but also enables the glue liquid below the roller barrel to flow towards the annular protrusion part and gather. Description of the Drawings

[0026] Figure 1 This is the schematic front sectional view of the present application. Detailed Description of the Invention

[0027] As Figure 1 can be seen, the glue coating roller structure of the wood thin plate includes a central shaft rod 1, the central shaft rod 1 is coaxially penetrated and fixed on a roller 2, the circumferential side wall of the roller 2 is coaxially covered with an annular rubber tube 3, the circumferential side wall surface of the annular rubber tube 3 is coaxially provided with a plurality of annular protrusions 4, the annular protrusions 4 are evenly distributed at equal intervals along the circumferential direction of the annular rubber tube 3, the height of the annular protrusions 4 relative to the outer side wall of the annular rubber tube 3 is in the range of 1 to 2 millimeters (1 millimeter is taken in this embodiment), and the axial groove width of the annular glue-retaining groove formed between two adjacent annular protrusions 4 is in the range of 2 to 5 millimeters (2 millimeters is taken in this embodiment).

[0028] Axial ends of the roller 2 are respectively coaxially provided with end plates 5, and there is an axial distance between two ends of the annular rubber tube 3 and the corresponding end plates of the roller 2.

[0029] A glue liquid baffle 9 is coaxially fixed on the outer end surface of the end plate 5, the diameter of the glue liquid baffle 9 is larger than the diameter of the roller 2 and less than or equal to the diameter of the annular rubber tube 3, and an annular glue collecting groove 10 is formed between the roller 2 corresponding to the corresponding end of the glue liquid baffle 9 and the annular rubber tube 3.

[0030] The glue liquid baffle 9 is sleeved on the central shaft rod 1, and the glue liquid baffle 9 is fixedly connected with the end plate 5 through a connecting bolt 11.

[0031] A sealing ring is further provided on the edge of the end surface of the end plate 5 facing the glue liquid baffle 9.

[0032] The bottom diameter of the annular glue collecting groove 10 decreases along the direction facing the glue liquid baffle 9.

[0033] Circumferential side walls of the roller 2 are respectively coaxially provided with limiting snap rings 6 at positions corresponding to two ends of the annular rubber tube 3, and matching annular clamping grooves are provided on the inner wall of the annular rubber tube 3 corresponding to the limiting snap rings 6.

[0034] The outer surface of the annular rubber tube 3 is a vulcanized layer 8.

[0035] The vulcanized layer 8 is respectively provided with annular conical arc surfaces B13 at two axial ends corresponding to the annular rubber tube 3, and the diameter of the annular conical arc surfaces B13 increases along the direction away from the end where the annular rubber tube 3 is located.

[0036] The diameter of the smaller diameter end of the annular conical arc surface B13 is the diameter of the inner edge of the vulcanized layer 8.

[0037] On the outer edges of both axial ends of the annular rubber tube 3, annular tapered arc surfaces A12 are respectively provided, and the diameter of the annular tapered arc surface A12 increases in the direction away from the end where the annular rubber tube 3 is located.

[0038] The larger diameter end of the annular tapered arc surface A12 is connected to the smaller diameter end of the annular tapered arc surface B13.

[0039] The taper angle A of the annular tapered arc surface A12 is greater than the taper angle B of the annular tapered arc surface B13.

[0040] The diameter of the smaller diameter end of the annular tapered arc surface A12 is greater than or equal to the diameter of the glue liquid baffle 9.

[0041] The inner wall of the roller 2 and the central shaft rod 1 are fixedly connected by a plurality of radial connecting rods 7.

[0042] The cross-section of the annular glue retention groove is a "V"-shaped groove, a "U"-shaped groove or a rectangular groove.

[0043] During the use of the present application, when the annular rubber tube 3 on the surface of the roller 2 contacts the glue liquid in the glue liquid pool, the glue liquid infiltrates into the annular glue retention groove formed between two adjacent annular protrusions 4, and due to the action of viscous force, the roller 2 can still effectively retain the glue liquid in the annular glue retention groove after being separated from the glue liquid pool. In addition, due to the action of the surface tension of the glue liquid, the liquid level of the glue liquid in the annular glue retention groove can exceed the groove wall of the annular glue retention groove formed by the annular protrusions 4, and the glue liquids in different annular glue retention grooves are connected together to submerge and cover the corresponding positions of the annular protrusions 4, that is, the part of the roller 2 after passing through the glue liquid pool in the present application can retain more glue liquid for glue coating to ensure the glue coating amount of the wooden thin board. When the glue liquid retained on the surface of the roller 2 rotates to be in pressing contact with the plate surface of the board to be glue-coated under the rotation of the roller 2, due to the pressure on the roller 2, the annular rubber tube 3 is deformed under pressure, and then the glue liquid retained on the surface of the annular rubber tube 3 is pressed onto the plate surface of the board, and through the action of the elastic restoring force of the annular rubber tube 3, it is convenient to better penetrate the glue liquid into the board interior through the board fibers, so that a certain thickness of the glue liquid layer of the board penetrates into the board to ensure the subsequent pasting effect of the board.

[0044] When the glue - applying roller is located above the plate and applies glue to the top surface of the plate, the plate contacts the bottom of the glue - applying roller. At this time, due to the arrangement of the annular conical arc surface A12 and the annular conical arc surface B13 at both ends of the roller 2, the middle of the bottom edge of the annular rubber tube 3 of the roller 2 contacts the plate surface. In order to ensure that the entire top surface of the plate can be coated with glue, generally, both side edges of the plate should be between the annular conical arc surfaces B13 at both ends of the annular rubber tube 3. When the roller 2 extrudes the glue onto the plate surface, the excess glue will inevitably be squeezed out from both side edges of the plate. However, due to the structure of the annular conical arc surface A12 and the annular conical arc surface B13, the glue will gather towards the middle part in contact with the plate along the annular conical arc surface A12 and the annular conical arc surface B13 under the action of its own weight, so that the glue still remains in the part of the annular rubber tube 3 provided with the annular protrusion 4, ensuring that more glue is used for coating the plate surface; after the glue is extruded from the two side edges of the thin wood board and outwards along the edges, it will contact the supporting components below the thin wood board through the annular rubber tubes 3 on both sides of the thin wood board, and under the action of gravity, the glue will be transferred to the supporting components below the thin wood board.

[0045] When the glue - applying roller is located below the plate and applies glue to the bottom surface of the plate, the plate contacts the top of the glue - applying roller. At this time, due to the arrangement of the annular conical arc surface A12 and the annular conical arc surface B13 at both ends of the roller 2, the middle of the top edge of the annular rubber tube 3 of the roller 2 contacts the plate surface. In order to ensure that the entire top surface of the plate can be coated with glue, generally, both side edges of the plate should be between the annular conical arc surfaces B13 at both ends of the annular rubber tube 3. When the roller 2 extrudes the glue onto the plate surface, the excess glue will inevitably be squeezed out from both side edges of the plate, and due to the structure of the annular conical arc surface A12 and the annular conical arc surface B13, the glue will flow along the annular conical arc surface A12 and the annular conical arc surface B13 towards the annular glue - collecting groove 10 under the action of its own weight, so that the extruded excess glue can flow to both sides as soon as possible, facilitating the centralized recovery of the glue. Moreover, due to the function of the glue baffle 9, the glue is prevented from flowing along the central shaft rod 1 to the shaft end and contacting other components, avoiding the glue pollution from affecting other components of the equipment and even affecting the normal operation of other components.

[0046] When the glue - feeding device of the glue applies glue to the upper part of the glue - applying roller, in order to ensure that there is still enough glue when the glue on the surface of the roller turns to the lower part and contacts the thin wood board, at this time, a relatively excessive amount of glue needs to be evenly dropped along the axial direction of the glue - applying roller onto the upper surface of the glue - applying roller. A glue layer can be gathered on the outer wall of the annular rubber tube 3 at the position of the annular protrusion 4 on the surface of the glue - applying roller. The glue at the positions corresponding to the annular conical arc surface A12 and the annular conical arc surface B13 at both axial ends of the annular rubber tube 3 will flow along the annular conical arc surface A12 and the annular conical arc surface B13 into the annular glue - collecting groove 10 under the action of its own weight, and the glue located in the annular glue - collecting groove 10 will drip downward intensively under the action of its own weight.

[0047] When the sizing device of the sizing agent is located at the bottom of the coating roller for sizing, in order to ensure that there is enough sizing agent on the surface of the roller to contact the thin wood board above, and to prevent the increase in energy consumption of the roller 2 due to excessive sizing agent being carried, it is only necessary to make the bottom surface of the annular rubber tube 3 of the coating roller contact the liquid level of the sizing agent. The annular protrusion 4 on the bottom surface of the annular rubber tube 3 extends below the liquid level of the sizing agent, and the liquid level of the sizing agent contacts the annular conical arc surface B13, so that the sizing agent carried by the bottom surface of the annular rubber tube 3 accumulates at the position of the annular protrusion 4.

Claims

1. Glue applicator roller structure for wood veneer, characterized in that: It includes a central shaft rod (1), and the central shaft rod (1) is coaxially penetrated and fixed on a roller (2). The circumferential side wall of the roller (2) is coaxially covered with an annular rubber tube (3). The circumferential side wall surface of the annular rubber tube (3) is coaxially provided with a plurality of annular protrusions (4). The annular protrusions (4) are evenly distributed at equal intervals along the circumferential direction of the annular rubber tube (3). The height of the annular protrusions (4) relative to the outer side wall of the annular rubber tube (3) is in the range of 1 to 2 millimeters, and the axial groove width of the annular glue-retaining groove formed between two adjacent annular protrusions (4) is in the range of 2 to 5 millimeters.

2. The glue - applying roller structure of the thin wood board according to claim 1, wherein: Axial ends of the roller (2) are respectively coaxially provided with end plates (5), and there is an axial distance between the two ends of the annular rubber tube (3) and the end plates at the corresponding ends of the roller (2).

3. The glue application roller structure of the thin wood board according to claim 2, characterized in that: On the outer end face of the end plate (5), a glue liquid baffle (9) is coaxially fixed. The diameter of the glue liquid baffle (9) is larger than the diameter of the roller (2) and less than or equal to the diameter of the annular rubber tube (3). An annular glue collecting groove (10) is formed between the roller (2) at the corresponding end between the glue liquid baffle (9) and the annular rubber tube (3).

4. The glue - applying roller structure of the thin wood board according to claim 3, characterized in that: The glue liquid baffle (9) is sleeved on the central shaft rod (1), and the glue liquid baffle (9) is fixedly connected with the end plate (5) through a connecting bolt (11).

5. The glue - applying roller structure of the thin wood board according to claim 3, characterized in that: On the edge of the end face of the end plate (5) facing the glue liquid baffle (9), a sealing ring is also provided.

6. The glue - applying roller structure for thin wood sheets according to claim 3, wherein: The bottom diameter of the annular glue collecting groove (10) decreases along the direction facing the glue liquid baffle (9).

7. The glue - applying roller structure for thin wood sheets according to claim 1, characterized in that: On the circumferential side wall of the roller (2), at positions corresponding to both ends of the annular rubber tube (3), limit snap rings (6) are respectively coaxially provided, and matching annular clamping grooves are provided on the inner wall of the annular rubber tube (3) corresponding to the limit snap rings (6).

8. The glue - applying roller structure of the wooden thin plate according to claim 1, characterized in that: The outer surface of the annular rubber tube (3) is a vulcanized layer (8).

9. The glue - applying roller structure of the thin wood board according to claim 8, characterized in that: Corresponding to both axial ends of the annular rubber tube (3), annular conical arc surfaces B (13) are provided on the vulcanized layer (8). The diameter of the annular conical arc surfaces B (13) increases along the direction away from the end where the annular rubber tube (3) is located.

10. The glue - applying roller structure for thin wood sheets as described in claim 1, characterized in that: On the outer edges of both axial ends of the annular rubber tube (3), annular conical arc surfaces A (12) are respectively provided. The diameter of the annular conical arc surfaces A (12) increases along the direction away from the end where the annular rubber tube (3) is located.

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