Vacuum preforming machine for AEPS plate production

Abstract

The utility model relates to AEPS board production technical field, concretely is a kind of AEPS board production with vacuum pre -explosion machine: including jar body, the surface of jar body is fixedly connected with controller, the surface of jar body is installed with vacuum pump, the surface of jar body is fixedly connected with feed pipe, the surface of jar body is provided with steam mechanism, the steam mechanism includes connecting pipe, and the connecting pipe is fixedly connected on the lateral wall of jar body.The utility model is equipped with multiple annular rings in the inside of jar body by steam mechanism, cooperate multiple steam spray heads, steam can be inputed at different height and position in the inside of jar body simultaneously, to improve the uniformity of steam input, let expandable polystyrene beads and steam contact, heat sufficiently and evenly, effectively solve the problem that the steam distribution of existing equipment is uneven, to improve the quality of foaming.

Description

Technical Field

[0001] This utility model relates to the field of AEPS board production technology, specifically a vacuum pre-expansion machine for AEPS board production. Background Technology

[0002] AEPS board, or molded polystyrene foam board for thermal insulation, is a common insulation material. The vacuum pre-expansion machine is one of the key pieces of equipment in the AEPS board production process. Its main function is to pre-expand expandable polystyrene (EPS) beads. Under vacuum conditions, the EPS beads are expanded by steam heating, forming a large number of uniform closed-cell structures inside. The pre-expanded EPS beads have a certain expansion ratio and density, laying the foundation for subsequent molding and production of AEPS boards.

[0003] The existing vacuum pre-expansion machine used for AEPS board production generates steam through a steam generator and delivers it directly into the vacuum pre-expansion machine through steam nozzles in a steam pipe. Due to the limited number of steam nozzles and their relatively uniform position within the vacuum pre-expansion machine, the steam distribution inside the machine is severely uneven, which in turn reduces the foaming quality. Utility Model Content

[0004] The purpose of this utility model is to provide a vacuum pre-expansion machine for AEPS board production, in order to solve the problem mentioned in the background art that the existing vacuum pre-expansion machines for AEPS board production have a small number of steam nozzles and the steam nozzles are relatively uniformly positioned inside the vacuum pre-expansion machine, resulting in severely uneven distribution of steam inside the vacuum pre-expansion machine, which in turn reduces the foaming quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum pre-expansion machine for AEPS board production, comprising a tank body, a controller fixedly connected to the surface of the tank body, a vacuum pump installed on the surface of the tank body, a feed pipe fixedly connected to the surface of the tank body, a threaded cap threadedly connected to the surface of the feed pipe, a discharge pipe fixedly connected to the bottom of the tank body, a first valve provided on the surface of the discharge pipe, a first motor fixedly connected to the surface of the tank body, a stirring shaft fixedly connected to the output shaft of the first motor, stirring blades fixedly connected to the surface of the stirring shaft, a steam mechanism provided on the surface of the tank body, the steam mechanism comprising a connecting pipe, the connecting pipe fixedly connected to the side wall of the tank body, an annular ring fixedly connected to the surface of the connecting pipe, a steam nozzle fixedly connected to the surface of the annular ring, a steam main pipe fixedly connected to the end of the connecting pipe away from the annular ring, a steam input pipe fixedly connected to the top of the steam main pipe, a second valve provided on the surface of the steam input pipe, and a third valve provided on the surface of the connecting pipe.

[0006] Preferably, a vibrating screen mechanism is provided on the surface of the tank body. The vibrating screen mechanism includes a guide cylinder, which is fixedly connected to the bottom of the tank body. A spring is fixedly connected to the bottom of the guide cylinder, and a lifting rod is fixedly connected to the bottom of the spring. The lifting rod is slidably connected to the surface of the guide cylinder. A connecting crossbar is fixedly connected to the bottom of the lifting rod, and a connecting vertical rod is fixedly connected to the surface of the connecting crossbar. A screening plate is fixedly connected to the surface of the connecting vertical rod, and the screening plate is slidably connected to the inner surface of the discharge pipe. A second motor is fixedly connected to the surface of the discharge pipe, and a vibrating block is fixedly connected to the output shaft of the second motor.

[0007] Preferably, the steam nozzles are provided in multiple sets, and the multiple sets of steam nozzles are arranged in a ring on the surface of the ring ring. The ring ring and the connecting pipes are provided in multiple sets, and the multiple sets of connecting pipes and the ring ring are arranged linearly and uniformly on the surface of the tank.

[0008] Preferably, the input end of the steam input pipe is connected to a steam generator, the steam input pipe delivers steam from the steam generator to the inside of the steam main pipe, the steam main pipe delivers steam to the annular ring through a connecting pipe, and the annular ring delivers steam evenly to the inside of the tank through multiple sets of steam nozzles.

[0009] Preferably, the lifting rod drives the connecting crossbar to slide horizontally at the bottom of the guide cylinder, and the connecting crossbar drives the screening plate to slide horizontally and rise and fall horizontally inside the discharge pipe through the connecting vertical rod.

[0010] Preferably, the lifting rod and the connecting vertical rod are parallel to each other and perpendicular to the connecting horizontal rod, and the elastic force of the spring acts on the screening plate through the lifting rod, the connecting horizontal rod and the connecting vertical rod.

[0011] Preferably, the vibrating block is elliptical in shape, and the second motor drives the vibrating block to rotate at the bottom of the screening plate through the output shaft, and the vibrating block continuously strikes the screening plate during the rotation.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This vacuum pre-expanding machine uses a steam mechanism to set multiple sets of annular rings inside the tank, along with multiple sets of steam nozzles, to allow steam to be input simultaneously at different heights and positions inside the tank. This improves the uniformity of steam input, allowing expandable polystyrene beads to fully and evenly contact and be heated by the steam, effectively solving the problem of uneven steam distribution in existing equipment, and thus improving the quality of foaming.

[0013] 2. This vacuum pre-expansion machine uses a second motor to drive an elliptical vibrating block to rotate and strike the screening plate. Under the action of spring force, the plate vibrates and slides up and down. Qualified beads can pass through the screen holes and enter the subsequent forming process, while unqualified beads are intercepted. This effectively prevents unqualified beads from entering the subsequent process, thereby ensuring the final production quality of the AEPS board. Attached Figure Description

[0014] Figure 1 This is a three-dimensional front view of the structure of this utility model; Figure 2 This is a three-dimensional sectional view of the structure of this utility model. Figure 3 This utility model Figure 2 Enlarged structural diagram at point A; Figure 4 This is a three-dimensional schematic diagram of the vibrating screen mechanism of this utility model, including front view, bottom view, and cross-sectional view. Figure 5 This is a three-dimensional schematic diagram of the material discharge pipe structure of this utility model, viewed from the front, from below, and in cross-section.

[0015] In the diagram: 1. Tank body; 11. Controller; 12. Vacuum pump; 13. Feed pipe; 14. Threaded cap; 15. Discharge pipe; 16. First valve; 17. First motor; 18. Stirring shaft; 19. Stirring blades; 2. Connecting pipe; 21. Annular ring; 22. Steam nozzle; 23. Steam main pipe; 24. Steam input pipe; 25. Second valve; 26. Third valve; 3. Guide cylinder; 31. Spring; 32. Lifting rod; 33. Connecting horizontal rod; 34. Connecting vertical rod; 35. Screening plate; 36. Second motor; 37. Vibrating block. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-5 One embodiment provided by this utility model: A vacuum pre-expansion machine for AEPS board production includes a tank body 1, a controller 11 fixedly connected to the surface of the tank body 1, a vacuum pump 12 mounted on the surface of the tank body 1, a feed pipe 13 fixedly connected to the surface of the tank body 1, a threaded cap 14 threadedly connected to the surface of the feed pipe 13, a discharge pipe 15 fixedly connected to the bottom of the tank body 1, a first valve 16 provided on the surface of the discharge pipe 15, a first motor 17 fixedly connected to the surface of the tank body 1, a stirring shaft 18 fixedly connected to the output shaft of the first motor 17, stirring blades 19 fixedly connected to the surface of the stirring shaft 18, and a steam mechanism provided on the surface of the tank body 1. The steam mechanism includes a connecting pipe 2 fixedly connected to the side wall of the tank body 1, and an annular ring 21 fixedly connected to the surface of the connecting pipe 2. A steam nozzle 22 is fixedly connected to the top of the tank. A steam main pipe 23 is fixedly connected to the end of the connecting pipe 2 away from the annular ring 21. A steam input pipe 24 is fixedly connected to the top of the steam main pipe 23. A second valve 25 is provided on the surface of the steam input pipe 24, and a third valve 26 is provided on the surface of the connecting pipe 2. The surface of the tank 1 is also provided with an observation window and a pressure sensor, etc., which are not shown in the figure and are existing technologies. This steam mechanism sets multiple sets of annular rings 21 inside the tank 1. Steam is simultaneously input to the multiple sets of annular rings 21 through the steam input pipe 24, the second valve 25 and the connecting pipe 2. The multiple sets of steam nozzles 22 on the multiple sets of annular rings 21 simultaneously input steam at different heights and positions inside the tank 1, which greatly improves the uniformity of steam input and thus ensures the quality of foaming.

[0018] Furthermore, a vibrating screen mechanism is provided on the surface of the tank body 1. The vibrating screen mechanism includes a guide cylinder 3, which is fixedly connected to the bottom of the tank body 1. A spring 31 is fixedly connected to the bottom of the guide cylinder 3, and a lifting rod 32 is fixedly connected to the bottom of the spring 31. The lifting rod 32 is slidably connected to the surface of the guide cylinder 3. A connecting crossbar 33 is fixedly connected to the bottom of the lifting rod 32. A connecting vertical rod 34 is fixedly connected to the surface of the connecting crossbar 33. A screening plate 35 is fixedly connected to the surface of the connecting vertical rod 34. The screening plate 35 is slidably connected to the inner surface of the discharge pipe 15. A second motor 36 is fixedly connected to the surface of the discharge pipe 15. A vibrating block 37 is fixedly connected to the output shaft of the second motor 36. The vibrating screen mechanism screens the pre-expanded beads inside the discharge pipe 15 through the screening plate 35 to prevent unqualified beads from entering subsequent molding and other processes and affecting the final product quality.

[0019] Furthermore, multiple sets of steam nozzles 22 are provided, and these multiple sets of steam nozzles 22 are arranged in a ring on the surface of the annular ring 21. Multiple sets of annular rings 21 and connecting pipes 2 are provided, and these multiple sets of connecting pipes 2 and annular rings 21 are arranged linearly and uniformly on the surface of the tank body 1. All multiple sets of annular rings 21 and steam nozzles 22 are inside the tank body 1, and connecting columns are provided inside the tank body 1 to support them (not shown in the figure). The multiple sets of annular rings 21 are arranged uniformly from high to low inside the tank body 1. The distance between two adjacent sets of annular rings 21 is reasonably designed according to the height of the tank body 1 and the steam distribution requirements.

[0020] Furthermore, the input end of the steam input pipe 24 is connected to the steam generator. The steam input pipe 24 delivers the steam from the steam generator to the steam main pipe 23. The steam main pipe 23 delivers the steam to the annular ring 21 through the connecting pipe 2. The annular ring 21 delivers the steam evenly to the inside of the tank 1 through multiple sets of steam nozzles 22, thereby realizing the input of steam into the tank 1. During the steam delivery process, the second valve 25 and the third valve 26 adjust the steam flow and pressure according to the instructions of the controller 11 to adapt to different production needs.

[0021] Furthermore, the lifting rod 32 drives the connecting crossbar 33 to slide horizontally at the bottom of the guide cylinder 3. The connecting crossbar 33 drives the screening plate 35 to slide horizontally and rise and fall inside the discharge pipe 15 through the connecting vertical rod 34. When the second motor 36 drives the vibrating block 37 to rotate, the vibrating block 37 continuously strikes the screening plate 35, causing the screening plate 35 to vibrate. At the same time, under the elastic force of the spring 31, the screening plate 35 slides up and down inside the discharge pipe 15 to screen the pre-expanded beads.

[0022] Furthermore, the lifting rod 32 and the connecting vertical rod 34 are parallel to each other and perpendicular to the connecting horizontal rod 33, ensuring the stability of the screening plate 35 in the discharge pipe 15. The elastic force of the spring 31 acts on the screening plate 35 through the lifting rod 32, the connecting horizontal rod 33 and the connecting vertical rod 34, so that the screening plate 35 can better return to the initial position during vibration and improve the screening effect.

[0023] Furthermore, the vibrating block 37 is elliptical in shape. The second motor 36 drives the vibrating block 37 to rotate at the bottom of the screening plate 35 through the output shaft. During the rotation, the vibrating block 37 continuously strikes the screening plate 35. Under the elastic force of the spring 31, the vibrating block 37 can rotate and continuously strike the screening plate 35, causing the screening plate 35 to vibrate inside the discharge pipe 15. This allows the discharge pipe 15 to vibrate and screen the pre-sized beads. The discharge pipe 15 can then be removed from the bottom of 01, making it convenient to clean the screening plate 35 on the discharge pipe 15.

[0024] Working principle: When pre-foaming expandable polystyrene (EPS) beads is required, the operator first opens the second valve 25 on the steam input pipe 24 and the third valve 26 on the connecting pipe 2 through the controller 11. The steam generated by the steam generator flows into the steam main pipe 23 through the steam input pipe 24. Then, the steam is simultaneously transported along the connecting pipe 2 to multiple sets of annular rings 21 set inside the tank 1. The multiple sets of annular rings 21 are distributed at different heights inside the tank 1, and multiple sets of steam nozzles 22 are evenly arranged on each set of annular rings 21. The steam is sprayed out from the steam nozzles 22, and the steam is simultaneously input at different heights and positions inside the tank 1, so that the steam can evenly cover all areas inside the tank 1, greatly improving the uniformity of steam input. At the same time, the controller 11 starts the first motor 17, which drives the stirring shaft 18 and stirring blades 19 to rotate, stirring the EPS beads in the tank, so that the beads are fully contacted with the evenly input steam and are evenly heated, thereby ensuring the quality of EPS bead foaming, and making the foaming ratio and density of the pre-foamed beads more uniform.

[0025] The operator opens the first valve 16 on the discharge pipe 15 via the controller 11, and the pre-expanded beads begin to be discharged through the discharge pipe 15. At this time, the controller 11 starts the second motor 36, and the output shaft of the second motor 36 drives the vibrating block 37 to rotate. Since the vibrating block 37 is elliptical in shape, it will continuously strike the screening plate 35 located in the discharge pipe 15 during the rotation. The screening plate 35 is connected to the lifting rod 32 via the connecting vertical rod 34 and the connecting horizontal rod 33. The lifting rod 32 slides in the guide cylinder 3, and the spring 31 at the bottom of the guide cylinder 3 provides elastic support for the screening plate 35. Under the combined action of the impact of the vibrating block 37 and the elastic force of the spring 31, the screening plate 35 vibrates and slides up and down inside the discharge pipe 15. When the pre-expanded beads pass through the screening plate 35, qualified beads can continue to be discharged from the discharge pipe 15 through the screen holes on the screening plate 35 and enter the subsequent forming stage; while unqualified beads, such as beads that have not been fully foamed or have agglomerated, are intercepted on the screening plate 35. The vibrating screening mechanism screens the pre-expanded beads in this way, effectively preventing unqualified beads from entering the subsequent forming stage, thereby ensuring the final production quality of the AEPS board.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vacuum pre-expansion machine for AEPS board production, characterized in that: The system includes a tank (1), on which a controller (11) is fixedly connected, a vacuum pump (12) is mounted, a feed pipe (13) is fixedly connected, a threaded cap (14) is threadedly connected to the surface of the feed pipe (13), a discharge pipe (15) is fixedly connected to the bottom of the tank (1), a first valve (16) is provided on the surface of the discharge pipe (15), a first motor (17) is fixedly connected to the surface of the tank (1), a stirring shaft (18) is fixedly connected to the output shaft of the first motor (17), and stirring blades are fixedly connected to the surface of the stirring shaft (18). (19) A steam mechanism is provided on the surface of the tank (1). The steam mechanism includes a connecting pipe (2). The connecting pipe (2) is fixedly connected to the side wall of the tank (1). An annular ring (21) is fixedly connected to the surface of the connecting pipe (2). A steam nozzle (22) is fixedly connected to the surface of the annular ring (21). A steam main pipe (23) is fixedly connected to the end of the connecting pipe (2) away from the annular ring (21). A steam input pipe (24) is fixedly connected to the top of the steam main pipe (23). A second valve (25) is provided on the surface of the steam input pipe (24). A third valve (26) is provided on the surface of the connecting pipe (2).

2. The vacuum pre-expansion machine for AEPS board production according to claim 1, characterized in that: A vibrating screen mechanism is provided on the surface of the tank (1). The vibrating screen mechanism includes a guide cylinder (3). The guide cylinder (3) is fixedly connected to the bottom of the tank (1). A spring (31) is fixedly connected to the bottom of the guide cylinder (3). A lifting rod (32) is fixedly connected to the bottom of the spring (31). The lifting rod (32) is slidably connected to the surface of the guide cylinder (3). A connecting crossbar (33) is fixedly connected to the bottom of the lifting rod (32). A connecting vertical rod (34) is fixedly connected to the surface of the connecting crossbar (33). A screening plate (35) is fixedly connected to the surface of the connecting vertical rod (34). The screening plate (35) is slidably connected to the inner surface of the discharge pipe (15). A second motor (36) is fixedly connected to the surface of the discharge pipe (15). A vibrating block (37) is fixedly connected to the output shaft of the second motor (36).

3. The vacuum pre-expansion machine for AEPS board production according to claim 1, characterized in that: The steam nozzles (22) are provided in multiple sets, and the multiple sets of steam nozzles (22) are arranged in a ring on the surface of the annular ring (21). The annular ring (21) and the connecting pipe (2) are provided in multiple sets, and the multiple sets of connecting pipes (2) and the annular ring (21) are arranged linearly and uniformly on the surface of the tank (1).

4. The vacuum pre-expansion machine for AEPS board production according to claim 1, characterized in that: The input end of the steam input pipe (24) is connected to the steam generator. The steam input pipe (24) transports the steam from the steam generator to the steam main pipe (23). The steam main pipe (23) transports the steam to the annular ring (21) through the connecting pipe (2). The annular ring (21) then evenly transports the steam to the tank body (1) through multiple sets of steam nozzles (22).

5. A vacuum pre-expansion machine for AEPS board production according to claim 2, characterized in that: The lifting rod (32) drives the connecting crossbar (33) to slide horizontally at the bottom of the guide cylinder (3), and the connecting crossbar (33) drives the screening plate (35) to slide horizontally and rise and fall inside the discharge pipe (15) through the connecting vertical rod (34).

6. A vacuum pre-expansion machine for AEPS board production according to claim 2, characterized in that: The lifting rod (32) and the connecting vertical rod (34) are parallel to each other and perpendicular to the connecting horizontal rod (33). The elastic force of the spring (31) acts on the screening plate (35) through the lifting rod (32), the connecting horizontal rod (33) and the connecting vertical rod (34).

7. A vacuum pre-expansion machine for AEPS board production according to claim 2, characterized in that: The vibrating block (37) is elliptical in shape. The second motor (36) drives the vibrating block (37) to rotate at the bottom of the screening plate (35) through the output shaft, and the vibrating block (37) continuously strikes the screening plate (35) during the rotation.

Images