Cooling device for precise cutting of wood-plastic extrusion line

Abstract

The utility model discloses a cooling device for precise cutting of a wood-plastic extrusion line. The cooling device comprises a first-order cooling module, a second-order cooling module and a third-order cooling module which are sequentially arranged at the downstream of an extrusion die, the first-order cooling module comprises a wind shield sleeving the surface of the wood-plastic plate extruded by the extrusion die and air blowing nozzles arranged above, below and on two side surfaces of the wood-plastic plate and connected with an air blower through pipelines; one side, corresponding to the air blowing nozzles, of the wind shield is a slope surface forming an obtuse angle with the surface of the wood-plastic plate; and the second-order cooling module and the third-order cooling module respectively comprise a still water cooling tank and a flowing water cooling tank. A first-order cooling module, a second-order cooling module and a third-order cooling module are sequentially arranged on the downstream of an extrusion die and are air cooling, still water cooling and flowing water cooling respectively, and the first-order cooling module, the second-order cooling module and the third-order cooling module are used in cooperation to achieve the effects of stepped cooling and cooling inside and outside. And the cutting accuracy is improved while the product quality is guaranteed, and the yield of finished products is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to wood -plastic board processing technical field, concretely is a kind of wood -plastic extrusion line precision cutting cooling device. BACKGROUND

[0002] In wood-plastic board processing process, first extruded by extruder and mould, continuously extruded long strip board on extrusion production line, then it needs to be cut processing. Twice cutting process is used in prior art, first rough cutting is carried out on extrusion production line, because the temperature of wood-plastic board just extruded is high, subsequent cooling shrinkage can cause size change, so rough cutting generally will be cut according to the length of finished product with a certain allowance, after wood-plastic board is completely cooled to normal temperature, size is stable, then accurate cutting is carried out. Because existing process adopts twice cutting, certain cutting waste head is generated, material waste is caused, and finished product yield is reduced.

[0003] If direct one-time accurate cutting is carried out, cutting is carried out according to wood-plastic board finished product length on extrusion production line, waste head can be avoided, but it needs to ensure that wood-plastic board is completely cooled when cutting, and size is stable, so as to avoid that size does not meet the standard after cutting according to finished product length.

[0004] Cooling mode on extrusion line in prior art mainly includes the following several kinds:

[0005] 1, air cooling, only surface cooling, internal board is difficult to cool completely, especially solid wood-plastic board;

[0006] 2, water cooling, similar to air cooling effect, internal cooling is difficult to ensure completely;

[0007] 3, water tank type water cooling, use is less, the main reason is that wood-plastic board rapid cooling can cause board performance to decline, such as internal stress accumulation causes internal microcracks or surface cracks of board, increase of brittleness causes impact resistance to decline, easy to break in later period and the like.

[0008] Therefore, it is of great significance to design a kind of wood-plastic extrusion line cooling device for improving wood-plastic board finished product yield and guaranteeing product quality. UTILITY MODEL CONTENTS

[0009] In view of the deficiencies of prior art, the utility model provides a kind of wood-plastic extrusion line precision cutting cooling device, to solve the problems that the internal cooling of wood-plastic extrusion line cooling device in prior art is not completely or rapid cooling causes to influence board quality.

[0010] To solve the above technical problems, the utility model provides the following technical scheme:

[0011] The application discloses a cooling device for precise cutting of a wood-plastic extrusion line.

[0012] The first cooling module comprises a wind shield arranged on the surface of the extruded wood-plastic plate and blow nozzles arranged above, below and on two sides of the wood-plastic plate and connected with a blower through pipes.

[0013] The second and third cooling modules each comprise a still water cooling tank and a running water cooling tank, the wood-plastic plate penetrates through the still water cooling tank and the running water cooling tank, and the two ends of the still water cooling tank and the running water cooling tank are each provided with a sealing groove corresponding to the wood-plastic plate, the sealing groove is horizontally arranged and the inner wall of the sealing groove is fixed with a rubber sleeve, the inner wall of the rubber sleeve is vertically fixed with a diaphragm arranged on the surface of the wood-plastic plate, and the diaphragm is provided with a protrusion at a position corresponding to a clamping groove on the two sides of the wood-plastic plate.

[0014] The third cooling module further comprises a plurality of water outlet pipes connected in a uniform and vertical manner below the running water cooling tank, the surface of the water outlet pipe is uniformly provided with a plurality of cooling fins, the top of the running water cooling tank is uniformly provided with a plurality of spray heads through a support, the water outlet pipe is connected with the spray head through a return pipe, and a circulating pump is arranged on the return pipe.

[0015] The third cooling module further comprises an industrial fan arranged on the side of the water outlet pipe and the spray head.

[0016] Preferably, the wind shield is arranged between the extrusion die and the blow nozzle, the air outlet of the blow nozzle is arranged towards the wind shield and is inclined to the surface of the wood-plastic plate.

[0017] Preferably, the sealing groove corresponding to the still water cooling tank is fixed on the inner wall, and the sealing groove corresponding to the running water cooling tank is fixed on the outer wall.

[0018] Preferably, the rubber sleeve, the diaphragm and the protrusion are an integrated soft silica gel structure, the diaphragm is a plurality of and is arranged equidistantly along the axis of the rubber sleeve.

[0019] Preferably, the diaphragm and the protrusion are installed in an interference fit with the wood-plastic plate and the clamping groove respectively.

[0020] Preferably, the cooling fins are horizontally arranged, and the water outlet pipe and the cooling fins are an integrated metal structure.

[0021] Preferably, the return pipe comprises a converging pipe connected to the bottom of the water outlet pipe, a diverging pipe connected to the top of the spray head and a connecting pipe connected between the diverging pipe and the circulating pump, and the water inlet end and the water outlet end of the circulating pump are connected with the converging pipe and the connecting pipe respectively.

[0022] Preferably, the industrial fan is arranged at the end of the collecting pipe and the distributing pipe away from the circulating pump and at the end of the water flow cooling tank corresponding to the static water cooling tank.

[0023] Compared with the prior art, the wood-plastic extrusion cooling device has the following beneficial effects:

[0024] The first-order cooling module, the second-order cooling module and the third-order cooling module are sequentially arranged downstream of the extrusion die, and are respectively air cooling, static water cooling and water flow cooling. The wood-plastic plate is preliminarily cooled by air blowing. After the wood-plastic plate passes through the static water cooling tank, the water in the static water cooling tank exchanges heat with the wood-plastic plate to be heated to form warm water with a lower temperature than the wood-plastic plate. The wood-plastic plate is soaked in the warm water for secondary cooling. The wood-plastic plate exchanges heat with the flowing water in the water flow cooling tank to further reduce the temperature, so that the wood-plastic plate is completely cooled. The first-order cooling module, the second-order cooling module and the third-order cooling module are used in cooperation to realize the effects of stepwise cooling and cooling from the inside and the outside, ensure the product quality, improve the cutting accuracy, improve the finished product yield, and solve the problem that the wood-plastic extrusion line cooling device in the prior art cannot completely cool the inside of the plate or causes rapid cooling to affect the quality of the plate. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a whole structure schematic view of the utility model;

[0026] Figure 2 It is a first-order cooling module structure schematic view of the utility model;

[0027] Figure 3 It is a structure sectional view of the corresponding position of the wind shield of the utility model;

[0028] Figure 4 It is a structure top view of the corresponding position of the air blowing nozzle of the utility model;

[0029] Figure 5 It is a static water cooling tank and sealing tank internal structure schematic view of the utility model;

[0030] Figure 6 It is a third-order cooling module structure schematic view of the utility model;

[0031] Figure 7 It is a water flow cooling tank and sealing tank internal structure schematic view of the utility model;

[0032] Figure 8 It is a structure side view of the corresponding position of the water flow cooling tank of the utility model.

[0033] In the diagram: 1. Extrusion die; 2. First-stage cooling module; 201. Wind shield; 202. Air nozzle; 3. Second-stage cooling module; 301. Static water cooling tank; 4. Third-stage cooling module; 401. Flowing water cooling tank; 402. Water outlet pipe; 403. Heat sink; 404. Bracket; 405. Spray head; 406. Return pipe; 4061. Manifold; 4062. Diverter pipe; 4063. Connecting pipe; 407. Circulation pump; 408. Industrial fan; 5. Wood-plastic composite board; 501. Slot; 6. Sealing groove; 601. Rubber sleeve; 602. Diaphragm; 603. Protrusion. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] like Figures 1-8 As shown, this utility model provides a technical solution: a cooling device for precise cutting in a wood-plastic extrusion line, comprising a first-stage cooling module 2, a second-stage cooling module 3, and a third-stage cooling module 4 sequentially arranged downstream of the extrusion die 1;

[0036] The first-stage cooling module 2 includes a wind shield 201 fitted on the surface of the wood-plastic composite board 5 extruded by the extrusion mold 1, and air nozzles 202 connected to a blower through pipes on the top, bottom and two sides of the wood-plastic composite board 5. The side of the wind shield 201 corresponding to the air nozzle 202 is a slope with an obtuse angle to the surface of the wood-plastic composite board 5. The wind shield 201 is positioned between the extrusion mold 1 and the air nozzles 202. The air outlet of the air nozzles 202 faces the wind shield 201 and is inclined towards the surface of the wood-plastic composite board 5 to avoid the hot air generated by the air cooling heat exchange from affecting the temperature of the extrusion mold 1 and thus avoiding affecting the extrusion quality of the product.

[0037] The second-stage cooling module 3 and the third-stage cooling module 4 respectively include a static water cooling tank 301 and a flowing water cooling tank 401. The wood-plastic composite board 5 passes through the static water cooling tank 301 and the flowing water cooling tank 401. Both ends of the static water cooling tank 301 and the flowing water cooling tank 401 are provided with sealing grooves 6 corresponding to the wood-plastic composite board 5. The sealing groove 6 corresponding to the static water cooling tank 301 is fixed on the inner wall to reduce the overall size and not affect the static water heat exchange. The sealing groove 6 corresponding to the flowing water cooling tank 401 is fixed on the outer wall to avoid interference with the spray head 405.

[0038] The sealing groove 6 is horizontally arranged and has an inner wall fixed with a rubber sleeve 601, the inner wall of the rubber sleeve 601 is vertically fixed with a plurality of diaphragms 602 sleeved on the surface of the wood-plastic board 5, and the diaphragms 602 are provided with protrusions 603 at positions corresponding to the clamping grooves 501 on both sides of the wood-plastic board 5, the rubber sleeve 601, the diaphragms 602 and the protrusions 603 are an integrated soft silica gel structure, the diaphragms 602 are equidistantly arranged along the axis of the rubber sleeve 601, and the diaphragms 602 and the protrusions 603 are respectively installed in interference fit with the wood-plastic board 5 and the clamping grooves 501 to realize sliding sealing.

[0039] The third-order cooling module 4 further comprises a plurality of water outlet pipes 402 connected in parallel and vertically below the flowing water cooling groove 401, the surfaces of the water outlet pipes 402 are uniformly provided with radiating fins 403, the radiating fins 403 are horizontally arranged, the water outlet pipes 402 and the radiating fins 403 are an integrated metal structure, the top of the flowing water cooling groove 401 is uniformly provided with a plurality of spray heads 405 through supports 404, the water outlet pipes 402 are connected with the spray heads 405 through a return pipe 406, and the return pipe 406 is provided with a circulating pump 407;

[0040] The return pipe 406 comprises a converging pipe 4061 connected to the bottom of the water outlet pipe 402, a diverging pipe 4062 connected to the top of the spray head 405, and a connecting pipe 4063 connected between the diverging pipe 4062 and the circulating pump 407, the water inlet end and the water outlet end of the circulating pump 407 are connected with the converging pipe 4061 and the connecting pipe 4063 respectively, the third-order cooling module 4 further comprises industrial fans 408 arranged on the sides of the water outlet pipes 402 and the spray heads 405, for cooling the circulating flowing water, the industrial fans 408 are arranged at the ends of the converging pipe 4061 and the diverging pipe 4062 away from the circulating pump 407, and are located at the end of the flowing water cooling groove 401 corresponding to the static water cooling groove 301, so as to avoid that the hot air formed by heat exchange causes the second-order cooling module 3 to be unable to naturally cool down.

[0041] Working principle:

[0042] After the wood-plastic plate 5 is extruded through the extrusion die 1, the upper and lower surfaces and the front and rear sides of the wood-plastic plate 5 are blown by the blowing nozzles 202 of the first cooling module 2 to realize preliminary air cooling; then the wood-plastic plate 5 penetrates the still water cooling groove 301 of the second cooling module 3 under the sealing effect of the sealing groove 6 and the diaphragm 602, the wood-plastic plate 5 is soaked through the still water cooling groove 301, the water in the still water cooling groove 301 exchanges heat with the wood-plastic plate 5 to be heated to form warm water with a lower temperature than the wood-plastic plate 5, and the wood-plastic plate 5 is cooled for the second time in the warm water, the cooling degree is relatively mild, and the wood-plastic plate 5 can be cooled inside; finally, the wood-plastic plate 5 passes through the flowing water cooling groove 401 of the third cooling module 4, and the wood-plastic plate 5 is cooled again by spraying circulating water, the circulating water is blown by the industrial fan 408 when circulating through the water outlet pipe 402 and sprayed from the spray head 405, the circulating water is cooled by the design of the cooling fins 403 and the spraying design, so that the wood-plastic plate 5 is gradually cooled to room temperature in a stepped manner, and the size shrinkage during subsequent cutting is avoided, thereby ensuring the product quality and improving the finished product yield.

[0043] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0044] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A cooling device for precision cutting in a wood-plastic extrusion line, characterized in that: It includes a first-stage cooling module (2), a second-stage cooling module (3), and a third-stage cooling module (4) sequentially arranged downstream of the extrusion die (1); The first-stage cooling module (2) includes a wind shield (201) sleeved on the surface of the wood-plastic board (5) extruded by the extrusion mold (1) and air nozzles (202) set above, below and on both sides of the wood-plastic board (5) and connected to the blower through pipes. The side of the wind shield (201) corresponding to the air nozzle (202) is a slope with an obtuse angle to the surface of the wood-plastic board (5). The second-stage cooling module (3) and the third-stage cooling module (4) respectively include a static water cooling tank (301) and a flowing water cooling tank (401). The wood-plastic board (5) passes through the static water cooling tank (301) and the flowing water cooling tank (401). Both ends of the static water cooling tank (301) and the flowing water cooling tank (401) are provided with sealing grooves (6) corresponding to the wood-plastic board (5). The sealing groove (6) is horizontally arranged and a rubber sleeve (601) is fixed on its inner wall. A diaphragm (602) fitted on the surface of the wood-plastic board (5) is vertically fixed on the inner wall of the rubber sleeve (601). A protrusion (603) is provided on the diaphragm (602) at the position corresponding to the slots (501) on both sides of the wood-plastic board (5). The three-stage cooling module (4) also includes multiple water outlet pipes (402) that are uniformly and vertically connected below the water cooling tank (401). The surface of the water outlet pipes (402) is uniformly provided with heat sinks (403). Multiple spray heads (405) are uniformly installed on the top of the water cooling tank (401) through a bracket (404). The water outlet pipes (402) are connected to the spray heads (405) through a return pipe (406), and a circulation pump (407) is installed on the return pipe (406). The three-stage cooling module (4) also includes an industrial fan (408) located on the side of the water outlet pipe (402) and the spray head (405).

2. The cooling device for precise cutting in a wood-plastic extrusion line according to claim 1, characterized in that: The windshield (201) is disposed between the extrusion mold (1) and the blower (202), and the air outlet of the blower (202) faces the windshield (201) and is inclined toward the surface of the wood-plastic board (5).

3. The cooling device for precision cutting in a wood-plastic extrusion line according to claim 1, characterized in that: The sealing groove (6) corresponding to the static water cooling tank (301) is fixed on the inner wall, and the sealing groove (6) corresponding to the flowing water cooling tank (401) is fixed on the outer wall.

4. The cooling device for precision cutting in a wood-plastic extrusion line according to claim 1, characterized in that: The sleeve (601), diaphragm (602) and bump (603) are an integral soft silicone structure. There are multiple diaphragms (602) and they are equidistantly arranged along the axis of the sleeve (601).

5. The cooling device for precision cutting in a wood-plastic extrusion line according to claim 1, characterized in that: The diaphragm (602) and the protrusion (603) are respectively installed with an interference fit to the wood-plastic board (5) and the slot (501).

6. The cooling device for precision cutting in a wood-plastic extrusion line according to claim 1, characterized in that: The heat sink (403) is horizontally arranged, and the water outlet pipe (402) and the heat sink (403) are an integral metal structure.

7. The cooling device for precision cutting in a wood-plastic extrusion line according to claim 1, characterized in that: The return pipe (406) includes a manifold (4061) connected to the bottom of the outlet pipe (402), a branch pipe (4062) connected to the top of the spray head (405), and a connecting pipe (4063) connecting the branch pipe (4062) and the circulation pump (407). The inlet and outlet of the circulation pump (407) are connected to the manifold (4061) and the connecting pipe (4063), respectively.

8. The cooling device for precision cutting in a wood-plastic extrusion line according to claim 7, characterized in that: The industrial fan (408) is located at one end of the manifold (4061) and the branch pipe (4062) away from the circulating pump (407), and at one end of the flowing water cooling tank (401) corresponding to the static water cooling tank (301).

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