Extrusion device for processing diffusion plate

Abstract

The utility model discloses an extrusion device for processing a diffusion plate, which relates to the technical field of diffusion plate processing and comprises a forming bin, a feed port is arranged on the rear side above the outer surface of the forming bin, fixing frames are arranged on the inner surface of the forming bin and positioned on the left side and the right side of the feed port, and an inclined plate is fixedly arranged in the middle of each fixing frame. A flow limiting roller is rotationally arranged on the inner wall of the front end of the inclined plate and protrudes forwards by a part of the inclined plate, and a sliding groove is formed in the upper portion of the front side of the surface of the fixing frame. Compared with an existing common extrusion device for processing the diffusion plate, the extrusion device for processing the diffusion plate has the advantages that the situation that molten materials flow arbitrarily or redundant materials overflow to two sides during extrusion forming is prevented, material waste is reduced, and it is ensured that all the materials are stacked on the rear side for complete extrusion forming processing; and meanwhile, the thickness of the diffusion plate subjected to extrusion molding can be flexibly adjusted, adjustment can be conducted without stopping the machine, use is convenient and flexible, and the protection performance and practicability are higher.

Description

Technical Field

[0001] The utility model relates to the technical field of diffusion plate processing, in particular to an extrusion device for diffusion plate processing. Background Art

[0002] Light diffuser plates, also known as light homogenizing plates, are widely used in the LED lighting and liquid crystal flat panel display industries. They are required to have characteristics such as high light diffusion and high light transmittance. At present, the main components of light diffuser plates are transparent resin substrates and a small amount of light diffusers doped therein. The transparent resin substrates here include polycarbonate, polymethyl methacrylate, and polystyrene. The manufacturing method of the light diffuser plate is to heat the transparent resin substrate doped with diffusion particles to a high temperature of 210°C to 230°C, extrude it into a continuous flat plate of a preset thickness in a molten state, and harden it into shape after cooling.

[0003] For example, the public document with application number 201820449523.8 discloses a diffusion plate extrusion static elimination device. This utility model eliminates static electricity by the overlap of water and static charge, and cools the plate with water mist at the same time, so that the diffusion plate is not soft when used by the robot. This solves the problem that the diffusion plate carries high voltage static electricity after being extruded in a molten state and hardened and formed out of the die head after cooling, which poses a safety hazard to the operator, and the high voltage static electricity will absorb foreign matter in the production environment and reduce the light transmittance of the diffusion plate. However, in the diffusion plate extrusion device, the diffusion plate has different thicknesses according to the requirements of different extrusion adaptation profiles. To replace extrusion devices with different thicknesses, it is necessary to stop the machine and adjust the extrusion roller, which has a greater impact on production efficiency.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and an extrusion device for processing a diffusion plate is proposed. Utility Model Content

[0005] The utility model aims to provide an extrusion device for processing a diffusion plate to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extrusion device for processing a diffusion plate, comprising a molding bin, a feed port is provided on the upper rear side of the outer surface of the molding bin, and a fixing frame is provided on the left and right sides of the inner surface of the molding bin on which the feed port is located, an inclined plate is fixedly provided in the middle of the fixing frame, a flow limiting roller is rotatably provided on the inner wall at the front end of the inclined plate, and a part of the flow limiting roller protrudes forward of the inclined plate, a slide groove is provided on the upper front side of the surface of the fixed frame, and an adjustment mechanism is provided inside the slide groove.

[0007] Preferably, the adjustment mechanism includes a screw rod rotatably arranged on the inner surface of the right slide groove, and a guide rod is fixedly installed on the inner surface of the left slide groove, the upper end of the screw rod passes through a fixed frame and is provided with a drive motor, and the surface of the screw rod and the surface of the guide rod are respectively provided with movable blocks by means of threaded connection and sliding connection.

[0008] Preferably, the adjustment mechanism also includes a baffle fixedly mounted on the front end of the movable block, and the rear side of the surface of the baffle is slidably fitted with the front side of the fixed frame, an extrusion roller is rotatably arranged in the middle of the lower end of the surface of the baffle, a rotating motor is arranged at the right end of the extrusion roller passing through the baffle, and the extrusion roller is located above the front side of the flow limiting roller.

[0009] Preferably, a water tank is fixedly installed on the front side above the outer surface of the molding bin, a submersible pump is fixedly provided on the bottom end of the surface of the water tank, and a delivery pipe is connected to the bottom end of the submersible pump.

[0010] Preferably, the bottom end of the delivery pipe passes through the water tank and the molding chamber and is connected to a multi-way pipe inside the molding chamber, and atomizing nozzles are evenly distributed and fixedly installed on the inner side of the surface of the multi-way pipe.

[0011] Preferably, a groove seat is fixedly installed at the bottom end of the forming bin, a conveyor belt is arranged on the upper middle part of the inner side of the surface of the groove seat, a through hole is opened on the surface of the conveyor belt, and a servo motor is arranged on the left end of the front power roller of the conveyor belt passing through the groove seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model prevents the molten material from flowing freely or the excess material from overflowing and pushing to both sides during extrusion molding by setting a fixed frame, an inclined plate, a flow-limiting roller, a chute and an adjustment mechanism, thereby avoiding material waste. The gap distance between the extrusion roller and the flow-limiting roller can also be changed, so that the thickness of the extruded diffusion plate can be flexibly adjusted. The utility model is convenient and flexible to use, and has stronger protection and practicality.

[0014] 2. The utility model is provided with a water tank, a submersible pump, a delivery pipe, a multi-way pipe, an atomizing nozzle and a conveyor belt, and utilizes the conveyor belt to pull the extruded diffusion plate forward for transportation. Before moving out of the molding chamber, the submersible pump can draw water from the water tank, and transport it through the delivery pipe and the multi-way pipe, and finally spray it out through the atomizing nozzle. The atomizing nozzle sprays water mist at the front end of the molding chamber to form a mist-like water wall, which can quickly cool and shape the molded diffusion plate to avoid changes in the shape of the diffusion plate. The water mist can also take away the static electricity generated by the surface of the diffusion plate and the die head, and effectively eliminate the static electricity, which is convenient for subsequent transportation and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the molding bin of the utility model;

[0017] Figure 3 This is a cross-sectional view of the fixing frame and a schematic diagram of the disassembled structure of the adjusting mechanism of the utility model;

[0018] Figure 4 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1. forming bin; 2. feed port; 3. fixing frame; 4. inclined plate; 5. current limiting roller; 6. slideway; 7. adjusting mechanism; 701. screw rod; 702. guide rod; 703. driving motor; 704. movable block; 705. baffle; 706. squeezing roller; 707. rotating motor; 8. water tank; 9. submersible pump; 10. conveying pipe; 11. multi-way pipe; 12. atomizing nozzle; 13. slot seat; 14. conveyor belt; 15. through hole; 16. servo motor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-Figure 3 As shown, an extrusion device for processing a diffusion plate includes a molding chamber 1, a feed port 2 is provided on the upper rear side of the outer surface of the molding chamber 1, a fixing frame 3 is provided on the left and right sides of the inner surface of the molding chamber 1 located at the feed port 2, an inclined plate 4 is fixedly provided in the middle of the fixing frame 3, a flow limiting roller 5 is rotatably provided on the inner wall of the front end of the inclined plate 4, and the flow limiting roller 5 protrudes forward from a part of the inclined plate 4, a slide groove 6 is provided on the upper front side of the surface of the fixing frame 3, an adjusting mechanism 7 is provided inside the slide groove 6, and the adjusting mechanism 7 includes a screw rod 701 rotatably provided on the inner surface of the right slide groove 6, and a screw rod 701 is fixedly provided on the inner surface of the left slide groove 6 The guide rod 702 and the upper end of the screw rod 701 pass through the fixed frame 3 and are provided with a driving motor 703. The surfaces of the screw rod 701 and the guide rod 702 are respectively provided with movable blocks 704 by means of threaded connection and sliding connection. The adjustment mechanism 7 also includes a baffle 705 fixedly installed on the front end of the movable block 704, and the rear side of the surface of the baffle 705 is slidably fitted with the front side of the fixed frame 3. An extrusion roller 706 is rotatably provided on the middle part of the lower end of the surface of the baffle 705. The right end of the extrusion roller 706 passes through the baffle 705 and is provided with a rotating motor 707. The extrusion roller 706 is located above the front side of the current limiting roller 5.

[0022] Furthermore, the rear half of the current limiting roller 5 is embedded in the front end of the inclined plate 4 and rotates, and fits closely with both ends of the inclined plate 4 and the fixing frame 3 to prevent the material from leaking through the joint.

[0023] Furthermore, the fixing frame 3 blocks both sides to prevent the material from falling from the sides.

[0024] Furthermore, the inclined plate 4 is tilted forward, so that the material fed from the feed port 2 can stably move forward and be extruded and formed by the limiting roller 5 and the squeezing roller 706 .

[0025] Furthermore, the baffle 705 slides in contact with the front side of the surface of the fixing frame 3 , and the lower end rotates closely in contact with the squeezing roller 706 , which can scrape off residual waste and prevent the material from falling through the gap between the front side and the squeezing roller 706 .

[0026] Furthermore, the movable block 704 and the baffle 705 form a whole, and when the screw rod 701 rotates, the left end will be limited by the guide rod 702, and then move up and down to adjust the gap distance between the extrusion roller 706 and the current limiting roller 5, thereby changing the thickness of the diffuser plate extrusion molding.

[0027] like Figure 2 and Figure 4 As shown, a water tank 8 is fixedly installed on the front side above the outer surface of the molding bin 1, a submersible pump 9 is fixedly installed on the bottom end of the surface of the water tank 8, a delivery pipe 10 is connected to the bottom end of the submersible pump 9, the bottom end of the delivery pipe 10 passes through the water tank 8 and the molding bin 1, and is located inside the molding bin 1 and is connected to a multi-way pipe 11, atomizing nozzles 12 are evenly distributed and fixedly installed on the inner side of the surface of the multi-way pipe 11, a groove seat 13 is fixedly installed on the bottom end of the molding bin 1, a conveyor belt 14 is arranged on the upper middle part of the inner side of the surface of the groove seat 13, a through hole 15 is opened on the surface of the conveyor belt 14, and a servo motor 16 is arranged on the left end of the front end power roller of the conveyor belt 14 passing through the groove seat 13.

[0028] Furthermore, the multi-way tube 11 is shaped like a gate, and can use the atomizing nozzle 12 to spray on the left and right sides and the top at the same time to form a complete water mist wall, so that the formed diffusion plate can be quickly cooled and formed to avoid changes in the shape of the diffusion plate. The water mist can also take away the static electricity generated by the surface of the diffusion plate and the die head, thereby effectively eliminating the static electricity.

[0029] Furthermore, the servo motor 16 drives the conveyor belt 14, and the conveyor belt 14 pulls the extruded diffusion plate forward for transportation.

[0030] Furthermore, the water mist combines to form a large number of water droplets, which can flow into the groove seat 13 through the through holes 15 on the surface of the conveyor belt 14 for collection and storage, thereby preventing the water gathered by the dripping water droplets from flowing freely, causing humidity in the working area, and avoiding the waste of water resources.

[0031] Working principle: When using the extrusion device for processing the diffusion plate, first, pour the molten material of the co-rotating twin-screw extruder into the molding bin 1 through the feed port 2, accumulate on the inclined plate 4, and be blocked by the fixed frame 3 on the left and right sides, and blocked by the baffle 705 on the front side, so that the material can only flow through the inclined plate 4 to the gap between the flow-limiting roller 5 and the extrusion roller 706, and the extrusion roller 706 is rotated by the rotating motor 707 to gradually push the material forward, and the material is extruded and formed in cooperation with the flow-limiting roller 5. According to the diffusion plate with different processing requirements, the lead screw 701 is rotated by the driving motor 703, and under the limit of the guide rod 702, the movable block 704 can drive the baffle 705 to rise and fall, thereby The extrusion roller 706 rises and falls, changing the gap distance between the extrusion roller 706 and the current limiting roller 5, so that the thickness of the extruded diffusion plate can be flexibly adjusted. The extruded diffusion plate will directly fall on the conveyor belt 14 and be transported forward. Before moving out of the molding bin 1, the submersible pump 9 can suck the water inside the water tank 8, and transport it through the conveying pipe 10 and the multi-way pipe 11, and finally spray it out through the atomizing nozzle 12. The atomizing nozzle 12 sprays water mist at the front end of the molding bin 1 to form a mist water wall, which can quickly cool and shape the molded diffusion plate. The water mist can also take away the static electricity generated by the surface of the diffusion plate and the die head, and effectively eliminate the static electricity. This is the working principle of the extrusion device for processing the diffusion plate.

Claims

1. An extrusion device for processing a diffusion plate, comprising a molding chamber (1), characterized in that: A feed port (2) is provided on the upper rear side of the outer surface of the molding bin (1); a fixing frame (3) is provided on the left and right sides of the feed port (2) on the inner surface of the molding bin (1); an inclined plate (4) is fixedly provided in the middle of the fixing frame (3); a flow limiting roller (5) is rotatably provided on the inner wall of the front end of the inclined plate (4), and the flow limiting roller (5) protrudes forward from a part of the inclined plate (4); a slide groove (6) is provided on the upper front side of the surface of the fixing frame (3); an adjusting mechanism (7) is provided inside the slide groove (6).

2. The extrusion device for processing a diffusion plate according to claim 1, characterized in that: The adjusting mechanism (7) comprises a screw rod (701) rotatably arranged on the inner surface of the right slide groove (6), and a guide rod (702) is fixedly installed on the inner surface of the left slide groove (6); the upper end of the screw rod (701) passes through the fixed frame (3) and is provided with a driving motor (703); the surface of the screw rod (701) and the surface of the guide rod (702) are respectively provided with a movable block (704) by means of threaded connection and sliding connection.

3. The extrusion device for processing a diffusion plate according to claim 1, characterized in that: The regulating mechanism (7) further comprises a baffle (705) fixedly mounted on the front end of the movable block (704), and the rear side of the surface of the baffle (705) is slidably fitted with the front side of the fixed frame (3), and a squeezing roller (706) is rotatably arranged in the middle of the lower end of the surface of the baffle (705), and a rotating motor (707) is arranged at the right end of the squeezing roller (706) passing through the baffle (705), and the squeezing roller (706) is located above the front side of the current limiting roller (5).

4. The extrusion device for processing a diffusion plate according to claim 1, characterized in that: A water tank (8) is fixedly installed on the front side above the outer surface of the molding bin (1), a submersible pump (9) is fixedly arranged on the bottom end of the surface of the water tank (8), and a delivery pipe (10) is connected to the bottom end of the submersible pump (9).

5. The extrusion device for processing a diffusion plate according to claim 4, characterized in that: The bottom end of the delivery pipe (10) passes through the water tank (8) and the molding chamber (1) and is located inside the molding chamber (1) and is connected to a multi-way pipe (11), and atomizing nozzles (12) are evenly distributed and fixedly installed on the inner side of the surface of the multi-way pipe (11).

6. The extrusion device for processing a diffusion plate according to claim 1, characterized in that: A groove seat (13) is fixedly installed at the bottom end of the forming bin (1), a conveyor belt (14) is arranged above the middle of the inner side of the surface of the groove seat (13), a through hole (15) is opened on the surface of the conveyor belt (14), and a servo motor (16) is arranged at the left end of the front power roller of the conveyor belt (14) passing through the groove seat (13).

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