Flame-retardant PET (Polyethylene Terephthalate) co-extrusion foaming plate device

Abstract

The utility model provides a flame-retardant PET co-extrusion foamed board device, which relates to the technical field of foamed boards and comprises a melting tank, a stirring component is arranged in the melting tank, a discharge pipe is fixed and communicated at the bottom of the melting tank and close to the center, a switch component is fixed and communicated at the bottom of the discharge pipe, and the switch component is fixed and communicated with the bottom of the melting tank. The bottom of the switch assembly is fixed to and communicates with a conveying and extruding assembly, and a spiral blade is arranged in the discharging pipe. And the stirring assembly comprises a rotating rod. In the stirring process of the stirring assembly, the reverse spiral blade can rotate, and the reverse rotation of the spiral blade can enable the discharging pipe and raw materials retained at the bottom to be conveyed upwards, so that the effect of preventing the raw materials from being retained at the bottom of the melting tank can be achieved, the effect of improving the stirring uniformity can be achieved, the stirring efficiency can be improved, and the production cost can be reduced. And meanwhile, when the spiral blades rotate forwards, the discharging efficiency can be improved, and the effect of preventing the interior of the discharging pipe from being blocked can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of foamed boards, in particular to a flame-retardant PET co-extruded foamed board device. Background Art

[0002] The flame-retardant PET co-extruded foamed sheet device is a device for producing flame-retardant PET co-extruded foamed sheets. It can extrude PET resin and additives such as flame retardants through an extrusion process to form a foamed sheet with flame retardant properties. The device is mainly composed of an extruder, a die, a foaming agent injection system, a cooling system and a cutting system. First, the extruder simultaneously feeds two or more different raw materials into the extrusion melting zone, and after heating and stirring and mixing, they form a uniform molten state. Then, the molten raw materials pass through the extrusion mechanism of the extruder and are extruded through the die mouth to form a sheet. During the extrusion process, the foaming agent is injected into the raw material through the injection system to cause it to foam. Then, the foamed sheet is quickly cooled by the cooling system to solidify it and maintain a stable shape. Finally, it is cut by the cutting system to obtain a foamed sheet of the required size.

[0003] The stirring structure in the existing co-extruded foam board device is usually not easy to flip the raw materials at the bottom upward, which easily leads to uneven stirring. At the same time, the co-extruded foam board device is usually not equipped with equipment for clearing the discharge port at the discharge port, which easily affects the operation of the co-extruded foam board device. Therefore, a flame-retardant PET co-extruded foam board device is needed to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the stirring structure in the co-extruded foamed board device is usually not easy to turn the raw materials at the bottom upwards, which easily leads to uneven stirring, and proposes a flame-retardant PET co-extruded foamed board device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a flame-retardant PET co-extrusion foaming board device, comprising a melting tank, a stirring assembly is arranged inside the melting tank, a discharge pipe is fixed and connected to the bottom of the melting tank and near the center, a switch assembly is fixed and connected to the bottom of the discharge pipe, a conveying extrusion assembly is fixed and connected to the bottom of the switch assembly, and a spiral blade is arranged inside the discharge pipe; a stirring assembly, the stirring assembly comprises a rotating rod, the rotating rod is located inside the melting tank, the bottom of the rotating rod is fixedly connected to the top of the spiral blade, a rotating plate is sleeved and fixedly connected to the surface of the rotating rod and near the top, and three stirring plates are symmetrically and fixedly connected to the bottom of the rotating plate at equal intervals.

[0006] Preferably, support legs are fixedly connected to the bottom of the melting tank at equal intervals, and the bottoms of the support legs are all trapezoidal.

[0007] Preferably, a scraper is fixedly connected to one side wall of the stirring plate inside the melting tank and close to the inner wall, and the scraper is in contact with the inner wall of the melting tank.

[0008] Preferably, a first motor is fixedly connected to the top of the melting tank and near the center, the top of the rotating rod passes through the top of the melting tank and is rotatably connected to its bearing, and the output end of the first motor is fixedly connected to the top of the rotating rod.

[0009] Preferably, the switch assembly includes a convex ring disk, the top of the convex ring disk is connected to the bottom of the discharge pipe, the inner wall of the convex ring disk is provided with a ring groove, the interior of the ring groove is provided with an annular gear disk, the surface of the annular gear disk is connected with arc plates by pins at equal intervals, and the other end of the arc plate is connected with a fan plate by pins.

[0010] Preferably, a pin rod is passed through and rotatably connected to one end of the fan plate, and both ends of the pin rod are fixedly connected to the top and bottom inner walls of the annular groove.

[0011] Preferably, a second motor is embedded in the protrusion of the convex ring disk, and a gear is fixedly connected to the output end of the second motor, and the gear is meshingly connected to the annular gear disk.

[0012] Preferably, the conveying extrusion assembly includes a conveying cylinder, the top of the conveying cylinder and near one end are fixed and connected to the bottom of the convex ring disk, a rotating rod is provided inside the conveying cylinder, and the surface of the rotating rod is sleeved and connected to conveying blades, and the extrusion end of the conveying cylinder is fixed and connected to an extrusion head.

[0013] Preferably, one end of the rotating rod passes through one end of the conveying cylinder and is rotatably connected to its bearing, one end of the conveying cylinder is fixedly connected to a third motor, and an output end of the third motor is fixedly connected to one end of the rotating rod.

[0014] Preferably, the top of the melting tank is fixedly connected to a feeding cylinder.

[0015] Compared with the prior art, the advantages and positive effects of the utility model are:

[0016] In the utility model, the reverse spiral blade can be rotated during the stirring process of the stirring component. The reverse rotation of the spiral blade can transport the discharge pipe and the raw materials retained at the bottom upward, which can prevent the raw materials from being retained at the bottom of the molten tank, thereby improving the stirring uniformity and further improving the stirring efficiency. At the same time, when the spiral blade rotates in the forward direction, the discharge efficiency can be increased and the blockage inside the discharge pipe can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1The utility model provides a three-dimensional diagram of the overall structure of a flame-retardant PET co-extrusion foaming board device;

[0018] Figure 2 The utility model provides a cross-sectional view of the overall structure of a flame-retardant PET co-extrusion foaming board device;

[0019] Figure 3 A partial structural plan view of a flame-retardant PET co-extruded foaming board device is proposed for the utility model;

[0020] Figure 4 The utility model provides a partial structural stereogram of a flame-retardant PET co-extruded foamed board device.

[0021] Legend: 1. Melting tank; 2. Support legs; 3. Stirring assembly; 301. Rotating rod; 302. Rotating plate; 303. Stirring plate; 304. Scraper; 305. First motor; 4. Discharge pipe; 5. Spiral blade; 6. Switch assembly; 601. Conveyor ring disk; 602. Ring groove; 603. Ring gear disk; 604. Fan plate; 605. Arc plate; 606. Pin rod; 607. Second motor; 608. Gear; 7. Conveying and extruding assembly; 701. Conveying cylinder; 702. Rotating rod; 703. Conveying blade; 704. Third motor; 705. Extrusion head; 8. Feed cylinder. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] Embodiment 1, as Figure 1-4 As shown, the utility model provides a flame-retardant PET co-extrusion foaming board device, including a melting tank 1, a stirring component 3 is arranged inside the melting tank 1, a discharge pipe 4 is fixed and connected to the bottom of the melting tank 1 and near the center, a switch component 6 is fixed and connected to the bottom of the discharge pipe 4, a conveying extrusion component 7 is fixed and connected to the bottom of the switch component 6, and a spiral blade 5 is arranged inside the discharge pipe 4; a stirring component 3, the stirring component 3 includes a rotating rod 301, the rotating rod 301 is located inside the melting tank 1, the bottom of the rotating rod 301 is fixedly connected to the top of the spiral blade 5, a rotating plate 302 is sleeved and fixedly connected on the surface of the rotating rod 301 and near the top, and three stirring plates 303 are fixedly connected to the bottom of the rotating plate 302 at equal intervals and symmetrically.

[0025] The effect achieved by the entire embodiment 1 is that the stirring component 3 is provided inside the melting tank 1, which can achieve the effect of stirring the raw materials inside the melting tank 1, and the discharge pipe 4 is fixed and connected to the bottom of the melting tank 1 and near the center, which can achieve the effect of discharging, and the switch component 6 is fixed and connected to the bottom of the discharge pipe 4, and the bottom of the switch component 6 is fixed and connected to the conveying extrusion component 7, which can achieve the effect of extruding the stirred raw materials into plates, and the spiral blades 5 are provided inside the discharge pipe 4, which can achieve the effect of conveying the raw materials inside the discharge pipe 4. The stirring assembly 3 comprises a rotating rod 301, which is located inside the melting tank 1. The bottom of the rotating rod 301 is fixedly connected to the top of the spiral blade 5. A rotating plate 302 is sleeved and fixedly connected to the surface of the rotating rod 301 near the top. Three stirring plates 303 are symmetrically and evenly spaced and fixedly connected to the bottom of the rotating plate 302. The rotating rod 301 can rotate to drive the rotating plate 302 to rotate, and the rotating plate 302 can rotate to drive the stirring plate 303 to rotate. At the same time, the rotating rod 301 can drive the spiral blade 5 to rotate during its rotation.

[0026] Embodiment 2, as Figure 1-4As shown, the bottom of the melting tank 1 is fixedly connected with support legs 2 at equal intervals, and the bottoms of the support legs 2 are all trapezoidal; a scraper 304 is fixedly connected to one side wall of the stirring plate 303 inside the melting tank 1 and close to the inner wall, and the scraper 304 is in contact with the inner wall of the melting tank 1; a first motor 305 is fixedly connected to the top of the melting tank 1 and close to the center, the top of the rotating rod 301 passes through the top of the melting tank 1 and is rotatably connected to its bearing, and the output end of the first motor 305 is fixedly connected to the top of the rotating rod 301; the switch assembly 6 includes a convex ring disk 601, the top of the convex ring disk 601 is connected to the bottom of the discharge pipe 4, the inner wall of the convex ring disk 601 is provided with an annular groove 602, and an annular toothed disk 603 is provided inside the annular groove 602, and an arc plate 605 is connected to the surface of the annular toothed disk 603 by pins at equal intervals, and the other end of the arc plate 605 is pin-connected to a fan plate 604; one end of the fan plate 604 passes through and is rotatably connected to a pin Rod 606, both ends of the pin rod 606 are fixedly connected to the top and bottom inner walls of the annular groove 602; a second motor 607 is embedded in the protrusion of the convex ring disk 601, and a gear 608 is fixedly connected to the output end of the second motor 607, and the gear 608 is meshed and connected with the annular gear disk 603; the conveying and extruding assembly 7 includes a conveying cylinder 701, the top of the conveying cylinder 701 and close to one end are fixed and connected to the bottom of the convex ring disk 601, a rotating rod 702 is provided inside the conveying cylinder 701, and a conveying blade 703 is sleeved on the surface of the rotating rod 702 and connected, and an extrusion end of the conveying cylinder 701 is fixed and connected to an extrusion head 705; one end of the rotating rod 702 passes through one end of the conveying cylinder 701 and is rotatably connected to its bearing, one end of the conveying cylinder 701 is fixedly connected to a third motor 704, and the output end of the third motor 704 is fixedly connected to one end of the rotating rod 702; the top of the melting tank 1 is fixedly connected to a feed cylinder 8.

[0027] The effect achieved by the entire embodiment 2 is that support legs 2 are fixedly connected at equal intervals through the bottom of the melting tank 1, and the bottoms of the support legs 2 are all trapezoidal, which can play the effect of supporting the bottom of the melting tank 1; a scraper 304 is fixedly connected to one side wall of the stirring plate 303 inside the melting tank 1 and close to the inner wall, and the scraper 304 is in contact with the inner wall of the melting tank 1, which can play the effect of scraping off the raw materials adhering to the inside of the melting tank 1; a first motor 305 is fixedly connected through the top of the melting tank 1 and close to the center, the top of the rotating rod 301 passes through the top of the melting tank 1 and is rotatably connected to its bearing, and the output end of the first motor 305 is fixedly connected to the top of the rotating rod 301 The switch assembly 6 includes a convex ring disk 601, the top of the convex ring disk 601 is connected to the bottom of the discharge pipe 4, the inner wall of the convex ring disk 601 is provided with a ring groove 602, and the inner part of the ring groove 602 is provided with an annular toothed disk 603. The surface of the annular toothed disk 603 is connected with an arc plate 605 with an equidistant pin shaft, and the other end of the arc plate 605 is connected with a fan plate 604 with a pin shaft, which can make the annular toothed disk 603 rotate to drive one end of the arc plate 605 to move, and the movement of the arc plate 605 drives the other end of the fan plate 604 to rotate; one end of the fan plate 604 is penetrated and rotated The pin rod 606 is dynamically connected, and both ends of the pin rod 606 are fixedly connected to the top and bottom inner walls of the annular groove 602, which can limit one end of the fan plate 604; a second motor 607 is embedded in the protrusion of the convex ring disk 601, and a gear 608 is fixedly connected to the output end of the second motor 607. The gear 608 is meshed with the annular toothed disk 603, which can make the second motor 607 drive the gear 608 to rotate, and the rotation of the gear 608 drives the annular toothed disk 603 to rotate; the conveying extrusion assembly 7 includes a conveying cylinder 701, and the top of the conveying cylinder 701 and the bottom of the convex ring disk 601 are fixed near one end. The conveying cylinder 701 is connected to the conveying cylinder 701, and a rotating rod 702 is provided inside. The surface of the rotating rod 702 is sleeved and connected with a conveying blade 703. The extrusion end of the conveying cylinder 701 is fixed and connected with an extrusion head 705, which can make the rotating rod 702 rotate to drive the conveying blade 703 to rotate and convey the raw materials to the inside of the extrusion head 705; one end of the rotating rod 702 passes through one end of the conveying cylinder 701 and is rotatably connected with its bearing, one end of the conveying cylinder 701 is fixedly connected with a third motor 704, and the output end of the third motor 704 is fixedly connected with one end of the rotating rod 702, which can make the third motor 704 drive the rotating rod 702 to rotate; a feeding cylinder 8 is fixedly connected to the top of the melting tank 1 to achieve the effect of feeding.

[0028] Working principle: By placing the principle from the feed barrel 8 into the inside of the melting tank 1, the first motor 305 in the stirring assembly 3 drives the rotating rod 301 to rotate, the rotation of the rotating rod 301 drives the rotating plate 302 to rotate, the rotation of the rotating plate 302 drives the stirring plate 303 to rotate, and at the same time, the spiral blade 5 is driven to rotate during the rotation of the rotating rod 301. When the spiral blade 5 rotates in the opposite direction during the stirring process, the discharge pipe 4 can be retained at the bottom of the raw material to be transported upward, which can prevent the raw material from being retained at the bottom of the melting tank 1, thereby achieving the effect of improving the stirring uniformity. When the stirring is completed, the gear 608 is driven to rotate by the second motor 607, and the rotation of the gear 608 drives the annular toothed disk 603 to rotate. The rotation of the annular toothed disk 603 can drive the fan plate 604 to open through the arc plate 605. At this time, the spiral blade 5 is rotated in the positive direction to increase the discharging efficiency. At this time, the stirred molten raw materials will enter the conveying cylinder 701. At this time, the rotating rod 702 is driven to rotate by the third motor 704. The rotation of the rotating rod 702 can drive the conveying blade 703 to rotate to convey the raw materials in the conveying cylinder 701 and extrude them from the extruder head 705.

[0029] The wiring diagram of the melting tank 1, the first motor 305, the second motor 607 and the third motor 704 in the utility model belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the melting tank 1, the first motor 305, the second motor 607 and the third motor 704 are no longer explained in detail.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A flame-retardant PET co-extrusion foaming board device, comprising a melting tank (1), characterized in that: The melting tank (1) is provided with a stirring assembly (3) inside, a discharge pipe (4) is fixed at the bottom and near the center of the melting tank (1) and is connected to the material, a switch assembly (6) is fixed at the bottom of the discharge pipe (4) and is connected to the material, a conveying extrusion assembly (7) is fixed at the bottom of the switch assembly (6) and is connected to the material, and a spiral blade (5) is provided inside the discharge pipe (4); A stirring assembly (3), the stirring assembly (3) comprising a rotating rod (301), the rotating rod (301) being located inside the melting tank (1), the bottom of the rotating rod (301) being fixedly connected to the top of the spiral blade (5), a rotating plate (302) being sleeved and fixedly connected on the surface of the rotating rod (301) near the top, and three stirring plates (303) being fixedly connected at equal intervals and symmetrically on the bottom of the rotating plate (302).

2. A flame-retardant PET co-extrusion foaming board device according to claim 1, characterized in that: The bottom of the melting tank (1) is fixedly connected with support legs (2) at equal intervals, and the bottoms of the support legs (2) are all trapezoidal.

3. A flame-retardant PET co-extrusion foaming board device according to claim 1, characterized in that: A scraper (304) is fixedly connected to one side wall of the stirring plate (303) inside the melting tank (1) and close to the inner wall, and the scraper (304) is in contact with the inner wall of the melting tank (1).

4. The flame-retardant PET co-extrusion foaming board device according to claim 1, characterized in that: A first motor (305) is fixedly connected to the top of the melting tank (1) and near the center; the top of the rotating rod (301) passes through the top of the melting tank (1) and is rotatably connected to its bearing; and the output end of the first motor (305) is fixedly connected to the top of the rotating rod (301).

5. The flame-retardant PET co-extrusion foaming board device according to claim 1, characterized in that: The switch assembly (6) comprises a convex ring disk (601), the top of the convex ring disk (601) is connected to the bottom of the discharge pipe (4), the inner wall of the convex ring disk (601) is provided with a ring groove (602), the interior of the ring groove (602) is provided with an annular toothed disk (603), the surface of the annular toothed disk (603) is connected to an arc plate (605) by pins at equal intervals, and the other end of the arc plate (605) is connected to a fan plate (604) by pins.

6. A flame-retardant PET co-extrusion foaming board device according to claim 5, characterized in that: A pin rod (606) passes through and is rotatably connected to one end of the fan plate (604), and both ends of the pin rod (606) are fixedly connected to the top and bottom inner walls of the annular groove (602).

7. The flame-retardant PET co-extrusion foaming board device according to claim 5, characterized in that: A second motor (607) is embedded in the protrusion of the convex ring disk (601), and a gear (608) is fixedly connected to the output end of the second motor (607), and the gear (608) is meshingly connected to the annular gear disk (603).

8. The flame-retardant PET co-extrusion foaming board device according to claim 5, characterized in that: The conveying extrusion assembly (7) comprises a conveying cylinder (701), the top of the conveying cylinder (701) and close to one end thereof are fixed to and connected with the bottom of the convex ring disk (601), a rotating rod (702) is provided inside the conveying cylinder (701), a conveying blade (703) is sleeved on the surface of the rotating rod (702) and connected, and an extrusion head (705) is fixed to the extrusion end of the conveying cylinder (701) and connected.

9. A flame-retardant PET co-extrusion foaming board device according to claim 8, characterized in that: One end of the rotating rod (702) passes through one end of the conveying cylinder (701) and is rotatably connected to the bearing thereof; one end of the conveying cylinder (701) is fixedly connected to a third motor (704); and an output end of the third motor (704) is fixedly connected to one end of the rotating rod (702).

10. The flame-retardant PET co-extrusion foaming board device according to claim 1, characterized in that: The top of the melting tank (1) is fixedly connected to a feeding cylinder (8).

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