Extrusion manufacturing equipment for ultrathin flat large-size television rear shell

Abstract

The utility model discloses ultra-thin flat-plate large-size television rear shell extrusion manufacturing equipment which comprises a feeding mechanism, a heating material conveying mechanism, a plain end die, an extrusion texture roller set, a trimming mechanism, a stress release transmission mechanism and a cutting mechanism. The heating conveying mechanism, the plain end die, the extrusion texture roller set, the trimming mechanism, the stress release transmission mechanism and the cutting mechanism are sequentially arranged from right to left; according to the utility model, the material without fiber addition is wrapped by the material without fiber addition to form the plate, the plate has certain strength and rigidity due to the glass fiber, so that the strength and the toughness of the large-size television rear shell are improved, and meanwhile, the two side surfaces of the plate are made of the polycarbonate plastics, so that the floating fiber appearance of the glass fiber is avoided, and the service life of the plate is prolonged. And meanwhile, the ductility of the plate can be improved, so that a plurality of texture appearances can be pressed by using a texture roller, and a thinner plate can be formed on the premise of ensuring the strength and the toughness.

Description

TECHNICAL FIELD

[0001] The utility model belongs to television rear shell technical field, concretely relates to a kind of extrusion manufacturing equipment of ultra-thin flat panel large size television rear shell. BACKGROUND

[0002] The rear shell of television on the market at present is mostly injection-molded rear shell, and the material is mostly PC+ABS;A small amount is vacuum-formed rear shell, and the material is mostly ABS;No matter which kind of rear shell, the thickness is relatively thick, and the weight is also relatively heavy. This rear shell is difficult to use integrally in the model of large size above 100 inches, and the model of large size is mostly assembled by multiple rear shells, and the deformation phenomenon of this kind of rear shell of any size is more prominent, especially the vacuum-formed rear shell has less supporting rib, and the deformation is more serious, therefore, design a kind of extrusion manufacturing equipment of ultra-thin flat panel large size television rear shell to change the above technical defects. SUMMARY

[0003] (1) technical problem to be solved

[0004] In view of the deficiencies of the prior art, the purpose of the utility model is to provide an extrusion manufacturing equipment of ultra-thin flat panel large size television rear shell to solve the problems raised in the background art.

[0005] (2) technical scheme

[0006] In order to solve the above technical problems, the utility model provides an extrusion manufacturing equipment of ultra-thin flat panel large size television rear shell, which comprises a feeding mechanism, a heating material conveying mechanism, a flat die, an extrusion texture roller group, an edge trimming mechanism, a stress release transmission mechanism and a cutting mechanism. The heating material conveying mechanism, the flat die, the extrusion texture roller group, the edge trimming mechanism, the stress release transmission mechanism and the cutting mechanism are arranged in sequence from right to left. The heating material conveying mechanism is provided with two upper and lower sides opposite to the right end of the axis of the production line. The right side of the heating material conveying mechanism is provided with a fiber felt clamping machine. The right side of the fiber felt clamping machine is provided with a fiber unwinding support. The discharge ends of the two heating material conveying mechanisms are respectively communicated with the upper and lower two feeding ends of the flat die. The discharge end of the fiber felt clamping machine is communicated with the feeding end of the right end of the flat die.

[0007] Preferably, the two heating material conveying mechanisms each comprise a screw extruder and a melt pump. The feeding end of the melt pump on the same side is communicated with the discharge end of the screw extruder on the same side. The discharge end of the melt pump on the same side is communicated with the feeding end of the corresponding flat die. The feeding mechanism is provided with two feeding machines. The feeding machine is communicated with the feeding end of the screw extruder.

[0008] Further, the plate clamping machine is arranged between the extrusion texture roller set and the flat die, the extrusion texture roller set comprises an upper roller, a middle roller and a lower roller, the upper roller is a fine sand grain roller, the middle roller is a texture roller with a desired texture appearance, and the lower roller can pull the plate to move leftwards.

[0009] Further, the first guide roller is arranged opposite to the lower roller, a plurality of the stretching rollers are arranged above the first guide roller in parallel, and the first traction roller is provided with two and arranged in a symmetrical manner.

[0010] Further, the trimming mechanism comprises a mounting frame, a through hole is arranged at the top middle part of the mounting frame, two symmetrically arranged guide rods are fixedly connected to the middle part of the through hole, moving tables are slidably connected to the two ends of the two guide rods, threaded blocks are fixedly connected to the bottom middle parts of the two moving tables, a bidirectional screw rod is arranged at the middle part of the mounting frame and below the through hole, the two ends of the bidirectional screw rod are rotatably connected to the inner top wall of the mounting frame through bearing seats, and an adjusting disc is fixedly connected to one end of the bidirectional screw rod through a rotating shaft.

[0011] Further, the two moving tables are fixedly connected with the L-shaped frames arranged in opposite directions at the top and away from each other, the two L-shaped frames are rotatably connected with the circular knives through rotating shafts at the top and close to each other, the L-shaped frames are provided with support wheels, the support wheels are rotatably connected with mounting seats through rotating shafts at the middle part of one side, the mounting seats are fixedly connected to the top of the moving table, the third guide rollers are fixedly connected to the upper surface of the mounting frame and located at the two sides of the moving table through fixing blocks, the top of the third guide roller is flush with the top of the support wheel, and the outer circumferential surface of the support wheel is provided with an annular groove matched with the circular knife.

[0012] Further, the stress release transmission mechanism comprises two second traction rollers arranged opposite to each other and a plurality of second guide rollers, the second traction rollers are arranged on the side close to the trimming mechanism, the connecting lines of the center lines of the plurality of second guide rollers are arranged in an up-and-down manner, and a discharging clamping machine is arranged between the leftmost second guide roller and the cutting mechanism.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the beneficial effects of the utility model lie in that:

[0015] The utility model discloses a material of not adding fiber is wrapped up to make into the board with the material of adding fiber, and the board has certain strength and rigidity because of the glass fiber, thereby improving the strength and toughness of large -size television rear -shell, and the both sides of the board adopt polycarbonate plastic, avoid the appearance of glass fiber floating fiber, can improve the ductility of board simultaneously, so many texture appearance can be pressed with the texture roller, and under the premise of guaranteeing strength and toughness, the thinner board can be formed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of the utility model;

[0017] Figure 2 It is the sectional view of the board of the utility model and shows the schematic diagram;

[0018] Figure 3 It is the edge trimming mechanism three -dimensional schematic diagram of the utility model;

[0019] Figure 4 It is the edge trimming mechanism another visual angle structural schematic diagram of the utility model;

[0020] Figure 5 It is the edge trimming mechanism front view structural schematic diagram of the utility model;

[0021] Figure 6 It is the Figure 4 It is the structure schematic diagram of A place of the utility model.

[0022] The mark in the drawing is: 1, feeding mechanism, 2, warm conveying mechanism, 3, screw extruder, 4, melt pump, 5, flat mouth mould, 6, fiber unwinding support, 7, fiber felt clamping machine, 8, board clamping machine, 9, upper roller, 10, middle roller, 11, lower roller, 12, first guide roller, 13, stretching roller, 14, first traction roller, 15, edge trimming mechanism, 16, stress release transmission mechanism, 17, second traction roller, 18, second guide roller, 19, discharging clamping machine, 20, cutting mechanism, 21, glass fiber layer, 22, polycarbonate plastic layer, 23, mounting bracket, 24, through -hole, 25, guide rod, 26, moving table, 27, threaded block, 28, bidirectional screw, 29, adjusting disc, 30, L type frame, 31, mounting seat, 32, supporting wheel, 33, circular knife, 34, shield, 35, third guide roller. DETAILED DESCRIPTION

[0023] The utility model discloses a kind of super-thin flat plate large-size television rear shell extrusion manufacturing equipment, its structural schematic diagram as shown in Figures 1-6As shown, the device comprises a feeding mechanism 1, a warming and feeding mechanism 2, a flat die 5, an extrusion texture roller group, a trimming mechanism 15, a stress release transmission mechanism 16 and a cutting mechanism 20. The warming and feeding mechanism 2, the flat die 5, the extrusion texture roller group, the trimming mechanism 15, the stress release transmission mechanism 16 and the cutting mechanism 20 are sequentially arranged from right to left. The warming and feeding mechanism 2 is provided with two upper and lower sides opposite to each other and arranged at the right end of the axis of the production line. The right side of the warming and feeding mechanism 2 is provided with a fiber felt clamping machine 7. The right side of the fiber felt clamping machine 7 is provided with a fiber unwinding support 6. The discharge ends of the two warming and feeding mechanisms 2 are respectively communicated with the upper and lower feeding ends of the flat die 5. The discharge end of the fiber felt clamping machine 7 is communicated with the feeding end at the right end of the flat die 5. The fiber felt on the fiber unwinding support 6 can be pulled out by the fiber felt clamping machine 7 and fed into the feeding port at the right end of the flat die 5. Then, a plurality of materials are conveyed into the warming and feeding mechanism 2 by the feeding mechanism 1. After being transmitted to the flat die 5 by the warming and feeding mechanism 2, the molten materials can be laminated with the fiber felt. Then, the plate material is extruded into a plate by the extrusion texture roller group. Then, the plate material is cut to a qualified size by the trimming mechanism 15. Then, the plate material is stress released, cooled and formed by the stress release transmission mechanism 16. In this stage, the plate material is conveyed forward by a plurality of up and down rollers. This process can eliminate the internal stress of the plate material and greatly improve the deformation of the plate material. In addition, the plate material is gradually cooled in this process and finally approaches room temperature, so as to achieve the purpose of shaping. Finally, the plate material is cut into a desired size specification by the cutting mechanism 20.

[0024] The two warming and feeding mechanisms 2 each comprise a screw extruder 3 and a melt pump 4. The feeding end of the same side melt pump 4 is communicated with the discharge end of the same side screw extruder 3. The discharge end of the same side melt pump 4 is communicated with the feeding end of the corresponding flat die 5. The feeding mechanism 1 is provided with two feeding machines. The discharge end of the feeding machine is communicated with the feeding end of the screw extruder 3. The feeding machine is controlled by an external controller to uniformly supply materials into the screw extruder 3. The external controller controls the heater in the screw extruder 3 to heat and keep the materials warm for a certain time. The molten materials can be pushed into the melt pump 4 by the screw extruder 3 and pumped to the feeding end of the corresponding flat die 5 by the melt pump 4.

[0025] In addition, a plate clamping machine 8 is arranged between the extrusion texture roller group and the flat die 5. The extrusion texture roller group comprises an upper roller 9, a middle roller 10 and a lower roller 11. The upper roller 9 is a fine sand grain roller and serves as the back of the plate material. The middle roller 10 is a texture roller with a desired texture appearance. The lower roller 11 can pull the plate material to move leftward. The fiber felt pushed out by the flat die 5 is pressed and conveyed between the upper roller 9, the middle roller 10 and the lower roller 11 by the plate clamping machine 8 and forms a plate material with a desired shape.

[0026] Further, the first guide roller 12 is arranged opposite to the lower roller 11, the plurality of stretching rollers 13 are arranged side by side above the first guide roller 12, and the first traction roller 14 is provided with two and arranged symmetrically in upper and lower positions; the first guide roller 12 is used to convey the plate to the plurality of stretching rollers 13 and continue to convey to the left to the trimming mechanism 15.

[0027] Further, the trimming mechanism 15 comprises a mounting frame 23, a through hole 24 is arranged at the top middle part of the mounting frame 23, two symmetrically arranged guide rods 25 are fixedly connected to the middle part of the through hole 24, two moving tables 26 are slidingly connected to the two ends of the two guide rods 25, threaded blocks 27 are fixedly connected to the bottom middle parts of the two moving tables 26, a bidirectional screw 28 is arranged at the middle part of the mounting frame 23 below the through hole 24, the two ends of the bidirectional screw 28 are rotatably connected to the inner top wall of the mounting frame 23 through bearing seats, and an adjusting disc 29 is fixedly connected to one end of the bidirectional screw 28 through a rotating shaft; the adjusting disc 29 can be rotated according to the required size specification, the adjusting disc 29 drives the bidirectional screw 28 to rotate, the two threaded blocks 27 on the bidirectional screw 28 move closer to each other, the threaded blocks 27 drive the moving tables 26 to move, so that the two moving tables 26 move closer to each other, and in addition, a scale is arranged at the top of the mounting frame 23, when one end of the moving table 26 coincides with a certain scale on the scale, the width of the trimmed plate can be known.

[0028] Further, the two moving tables 26 are fixedly connected with the oppositely arranged L-shaped frames 30 at the top and away from each other ends, the two L-shaped frames 30 are rotatably connected with circular knives 33 at the ends close to each other through rotating shafts, the L-shaped frames 30 are provided with supporting wheels 32, the supporting wheels 32 are rotatably connected with mounting seats 31 at the middle part of one side through rotating shafts, the mounting seats 31 are fixedly connected with the moving tables 26 at the bottom, the two ends of the upper surfaces of the mounting frames 23 and located at the two sides of the moving tables 26 are fixedly connected with third guide rollers 35 through fixed blocks, the top of the third guide roller 35 and the top of the supporting wheel 32 are flush, the middle part of the outer circumferential surface of the supporting wheel 32 is provided with an annular groove matched with the circular knife 33, and the two L-shaped frames 30 are provided with protective covers 34 at the ends close to each other and above the circular knives 32; after the moving tables 26 are adjusted to the required position, the circular knives 32 and the supporting wheels 33 on the moving tables 26 are conveyed to the third guide roller 35 by the first traction roller 14 and continue to move to the left, so that the two sides of the plate pass through the two sides of the supporting wheels 33 and the circular knives 32, and the circular knives 33 and the supporting wheels 32 cooperate to cut off the excess part on the two sides of the plate, wherein the plate comprises a middle glass fiber layer 21 and polycarbonate plastic layers 22 on the upper and lower sides.

[0029] In addition, the stress release transmission mechanism 16 comprises two second traction rollers 17 arranged oppositely and a plurality of second guide rollers 18, the second traction rollers 17 are arranged near one side of the trimming mechanism 15, the center lines of the plurality of second guide rollers 18 are arranged in an up-and-down manner, and a discharging clamp 19 is arranged between the leftmost second guide roller 18 and the cutting mechanism 20; the plate is conveyed to the left by the plurality of second guide rollers 18 arranged in an up-and-down manner, this process can eliminate the internal stress of the plate and greatly improve the deformation of the plate, in addition, the plate will be gradually cooled in this process, and finally approaches normal temperature, so as to achieve the purpose of setting.

[0030] Working principle: when in use, the trimming mechanism 15 is adjusted to the required position in advance, the adjusting disc 29 can be rotated, the adjusting disc 29 drives the bidirectional screw rod 28 to rotate, the bidirectional screw rod 28 drives the two threaded blocks 27 thereon to move close to each other, the threaded blocks 27 drive the moving tables 26 to move, so that the two moving tables 26 move close to each other, in addition, the top of the mounting frame 23 is provided with a scale, when the one end of the moving table 26 coincides with a certain scale on the scale, the circular knife 33 and the supporting wheel 32 on the moving table 26 are adjusted to the required position, and then the width of the trimmed plate can be known;

[0031] Put the formula raw material of the plate into the barrel of the two feeding machines, and the raw material is polycarbonate plastic; then turn on the heaters on the upper and lower screw extruders 3 and the heaters in the flat die 5 through the external controller, and after being heated to the set temperature, keep the temperature for 20-40 minutes to keep the screw of the upper and lower screw extruders 3 and the die of the flat die 5 evenly heated; turn on the power switch of the heat conduction oil heating rod to heat the heat conduction oil to the set temperature, and at the same time, turn on the circulating pump switch of the heat conduction oil; then place the prepared fiber felt on the fiber unwinding support 6, manually pull the fiber felt through the fiber felt clamping machine 7 and the plate clamping machine 8 at the outlet of the fiber felt flat die 5 in sequence, and pull the fiber felt to tighten it; turn on the upper and lower screw extruders 3, the melt pump 4, the fiber felt clamping machine 7, the plate clamping machine 8, the first traction roller 14 and the second traction roller 17 in sequence; the upper and lower screw extruders 3 heat the formula raw material into a molten state of plastic, which is pumped to the outlet of the flat die 5 through the melt pump 4, and the plastic melt is bonded on the upper and lower sides of the fiber felt to form a three-layer fiber reinforced plastic plate, which is compressed and conveyed by the plate clamping machine 8, and then extruded into a plate by the upper, middle and lower three rollers, wherein the middle roller 10 is a texture roller with a desired texture appearance, the upper roller 9 is generally a fine sand texture roller as the back of the plate, and the lower roller 11 pulls the plate to the left to the lower side of the first guide roller 12 and the upper side of the plurality of stretching rollers 13, and then conveyed to the third guide roller 35 and the supporting wheel 33 at the right end through the first traction roller 14, so that the two sides of the plate are trimmed by the circular knife 33 to remove excess edge material, and then enter the plurality of up-and-down second guide rollers 18 through the second traction roller 17 and carry the plate to the left, which can eliminate the internal stress of the plate and greatly improve the deformation of the plate, and the plate is gradually cooled during the process, and finally approaches room temperature, so as to achieve the purpose of shaping; finally, the plate reaches the cutting mechanism 20, and the cutting machine in the cutting mechanism 20 cuts the plate into the desired size specification.

[0032] All the technical features in the embodiment can be freely combined according to actual needs.

[0033] The above embodiment is a preferred implementation scheme of the utility model, and the utility model can also be implemented in other ways without departing from the concept of the technical scheme, and any obvious replacement within the scope of the utility model.

Claims

1. An extrusion manufacturing equipment for an ultra-thin flat panel large-size television back cover, characterized in that: The system includes a feeding mechanism (1), a heating and conveying mechanism (2), a flat die (5), an extrusion texture roller group, a trimming mechanism (15), a stress release transmission mechanism (16), and a cutting mechanism (20). The heating and conveying mechanism (2), the flat die (5), the extrusion texture roller group, the trimming mechanism (15), the stress release transmission mechanism (16), and the cutting mechanism (20) are arranged sequentially from right to left. There are two heating and conveying mechanisms (2), which are located opposite each other on the upper and lower sides of the right end of the production line axis. A fiber felt clamping machine (7) is provided on the right side of the heating and conveying mechanism (2), and a fiber unwinding bracket (6) is provided on the right side of the fiber felt clamping machine (7). The discharge ends of the two heating and conveying mechanisms (2) are respectively connected to the upper and lower feed ends of the flat die (5), and the discharge end of the fiber felt clamping machine (7) is connected to the feed end of the right end of the flat die (5).

2. The ultra-thin flat panel large-size television back shell extrusion manufacturing equipment according to claim 1, characterized in that: Both heating and feeding mechanisms (2) include a screw extruder (3) and a melt pump (4). The feed end of the melt pump (4) on the same side is connected to the discharge end of the screw extruder (3) on the same side. The discharge end of the melt pump (4) on the same side is connected to the feed end of the corresponding flat die (5). There are two feeding mechanisms (1). The feeding mechanism (1) includes a feeder. The discharge end of the feeder is connected to the feed end of the screw extruder (3).

3. The ultra-thin flat panel large-size television back shell extrusion manufacturing equipment according to claim 1, characterized in that: A plate clamping machine (8) is provided between the extrusion texture roller group and the flat die (5). The extrusion texture roller group includes an upper roller (9), a middle roller (10) and a lower roller (11). The upper roller (9) is a fine sand texture roller, the middle roller (10) is a texture roller with the desired texture appearance, and the lower roller (11) can pull the plate to move to the left.

4. The ultra-thin flat panel large-size television back cover extrusion manufacturing equipment according to claim 1, characterized in that: Between the extrusion texture roller group and the trimming mechanism (15), there is a first guide roller (12), multiple stretching rollers (13) and a first traction roller (14). The first guide roller (12) is arranged opposite to the lower roller (11). Multiple stretching rollers (13) are arranged side by side above the first guide roller (12). There are two first traction rollers (14) arranged symmetrically above and below.

5. The ultra-thin flat panel large-size television back shell extrusion manufacturing equipment according to claim 1, characterized in that: The trimming mechanism (15) includes a mounting frame (23). The top center of the mounting frame (23) is provided with a through hole (24). Two symmetrically arranged guide rods (25) are fixedly connected to the center of the through hole (24). Both ends of the two guide rods (25) are slidably connected to a moving platform (26). The bottom center of the two moving platforms (26) is fixedly connected to a threaded block (27). The center of the mounting frame (23) and below the through hole (24) is provided with a bidirectional screw (28). Both ends of the bidirectional screw (28) are rotatably connected to the inner top wall of the mounting frame (23) through bearing seats. One end of the bidirectional screw (28) is fixedly connected to an adjusting plate (29) through a rotating shaft.

6. The ultra-thin flat panel large-size television back shell extrusion manufacturing equipment according to claim 5, characterized in that: Two L-shaped frames (30) are fixedly connected to each other at their top and opposite ends. Two L-shaped frames (30) are rotatably connected to each other at their close ends via a rotating shaft. Each L-shaped frame (30) is provided with a support wheel (32). A mounting base (31) is rotatably connected to the middle of one side of the support wheel (32) via a rotating shaft. The bottom of the mounting base (31) is fixedly connected to the top of the mobile platform (26). The upper surface of the mounting frame (23) and both sides of the mobile platform (26) are fixedly connected to a third guide roller (35) via a fixing block. The top of the third guide roller (35) is flush with the top of the support wheel (32). The outer circumference of the support wheel (32) is provided with an annular groove that matches the round knife (33).

7. The ultra-thin flat panel large-size television back shell extrusion manufacturing equipment according to claim 1, characterized in that: The stress relief transmission mechanism (16) includes two opposing second traction rollers (17) and multiple second guide rollers (18). The second traction rollers (17) are located on the side close to the trimming mechanism (15). The line connecting the center lines of the multiple second guide rollers (18) is arranged in an up-down undulating manner. A discharge clamping machine (19) is provided between the leftmost second guide roller (18) and the cutting mechanism (20).

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