Centrifugal pouring device for polyurethane workpiece

Abstract

The utility model relates to a polyurethane workpiece centrifugal pouring device, and belongs to the technical field of polyurethane workpiece pouring, the polyurethane workpiece centrifugal pouring device comprises a support, a machining table is fixed on the inner side of the support, a pouring pipe is arranged at the top end of the inner side of the support, and a lifting assembly used for driving the pouring pipe to move up and down is arranged on the outer surface of the pouring pipe; a centrifugal assembly is arranged in the machining table, and a temperature and pressure sensor is arranged in an inner cavity of the centrifugal assembly. The centrifugal assembly comprises a rotating table, a motor, two supporting rods, a supporting block fixedly installed on the outer surface of the rotating table and a fixed inner gear ring fixedly installed in an inner cavity of the rotating table. According to the centrifugal pouring device for the polyurethane workpiece, by arranging the centrifugal assembly, the workpiece mold can be driven to rotate, so that centrifugal force can be exerted on polyurethane liquid poured in the workpiece mold, bubbles in polyurethane raw materials can be discharged through the centrifugal force, and the density and performance of the workpiece are improved; and the rotating table can stably drive the workpiece mold to rotate.

Description

Technical Field

[0001] This application relates to the field of polyurethane workpiece casting technology, specifically to a centrifugal casting device for polyurethane workpieces. Background Technology

[0002] Polyurethane, short for polyurethane foam, is a polymer compound. Soft polyurethane (PU) mainly has a thermoplastic linear structure. It has better stability, chemical resistance, resilience and mechanical properties than PVC foam, and has less compression deformation. It also has good thermal insulation, sound insulation, shock resistance and anti-toxic properties. Polyurethane components include polyurethane tires, polyurethane seals, etc.

[0003] In the preparation process of polyurethane workpieces, polyurethane liquid is usually poured into a mold to form the polyurethane workpiece. However, since polyurethane pouring is usually carried out by static pouring, there are problems such as many air bubbles and uneven density inside the workpiece, which leads to unstable performance of the finished polyurethane workpiece. Therefore, a centrifugal pouring device for polyurethane workpieces is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a centrifugal casting device for polyurethane workpieces, which has advantages such as uniform density and solves the problem of uneven density.

[0005] To achieve the above objectives, this application provides the following technical solution: a polyurethane workpiece centrifugal casting device, including a support, a processing table fixed on the inner side of the support, a casting pipe provided at the top of the inner side of the support, a lifting component for driving the casting pipe to move up and down on the outer surface of the casting pipe, a centrifugal component provided inside the processing table, and a temperature and pressure sensor provided in the inner cavity of the centrifugal component.

[0006] The centrifugal assembly includes a rotating table, a motor, two support rods, a support block fixedly installed on the outer surface of the rotating table, an internal gear ring fixedly installed in the inner cavity of the rotating table, a small gear fixedly installed on the outer surface of the two support rods, a large gear fixedly installed at the output end of the motor, and limiting components fixedly installed at the left and right ends of the rotating table.

[0007] By adopting the above technical solution, the casting mold can be rotated so that the polyurethane liquid poured into the mold can exert centrifugal force, which can expel air bubbles from the polyurethane raw material and improve the density and performance of the workpiece.

[0008] Furthermore, the top of the processing table is provided with a through hole, and the rotary table is rotatably connected to the inside of the through hole.

[0009] Adopting the technical scheme, the rotating table can penetrate the inside of the machining table and rotate in the inside of the machining table.

[0010] Further, the inside of the through hole is provided with an annular sliding groove, and the supporting block is annular, and the supporting block is rotationally connected to the inside of the annular sliding groove.

[0011] Adopting the technical scheme, the rotating table can be stably rotated in the inside of the machining table.

[0012] Further, the motor is fixed to the bottom of the inside of the support, and the two supporting rods are rotationally connected to the bottom of the inside of the support through bearings.

[0013] Adopting the technical scheme, the large gear and the two small gears can be stably rotated in the bottom of the inside of the support.

[0014] Further, the opposite sides of the two small gears are engaged with the left and right ends of the inner cavity of the ring gear, and the large gear is located between the two small gears.

[0015] Adopting the technical scheme, the large gear can be engaged with the ring gear through the two small gears, so that the ring gear can drive the rotating table to rotate.

[0016] Further, the limiting assembly comprises two L-shaped plates, an electric push rod fixedly installed on the inner side walls of the two L-shaped plates, and a positioning plate fixed to the output end of the electric push rod.

[0017] Adopting the technical scheme, the workpiece mold can be positioned and fixed, so that when the rotating table drives the workpiece mold to rotate, the workpiece mold is prevented from falling off the rotating table, and the rotating table can stably drive the workpiece mold to rotate.

[0018] Further, the rotating table is circular with a hollow inner cavity and a missing lower end, a fixing hole is formed in the top of the rotating table, and the temperature and pressure sensor is fixed to the inside of the fixing hole.

[0019] Adopting the technical scheme, the temperature and pressure sensor can be fixed in the inside of the rotating table, so that the temperature and pressure sensor can be in contact with the bottom end of the workpiece mold, and the temperature and pressure sensor can monitor the temperature in the workpiece mold.

[0020] Further, the lifting assembly comprises two electric telescopic rods fixed on the top of the inside of the support, and a driving plate is fixed to the output end of the two electric telescopic rods.

[0021] Adopting the technical scheme, the lifting assembly can drive the pouring pipe to move in the inside of the support.

[0022] Compared with the prior art, the technical scheme of the present application has the following advantages:

[0023] The polyurethane workpiece centrifugal casting device, by setting up the centrifugal assembly, can drive the workpiece mold to rotate, so as to be able to play the centrifugal force on the polyurethane liquid poured in the workpiece mold, so that the centrifugal force can discharge the bubbles in the polyurethane raw material, improve the density and performance of the workpiece, and the rotating table can stably drive the workpiece mold to rotate. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The structure of the present application is shown in the figure;

[0025] Figure 2 The structure of the rotating table and the support block of the present application is shown in the figure;

[0026] Figure 3 The inner cavity structure of the rotating table of the present application is shown in the figure.

[0027] In the figure: 1, support; 2, processing table; 3, pouring pipe; 41, electric telescopic rod; 42, driving plate; 5, centrifugal assembly; 51, rotating table; 52, support block; 53, inner gear ring; 54, pinion; 55, gear; 56, motor; 57, support rod; 58, L-shaped plate; 59, electric push rod; 510, positioning plate; 6, temperature and pressure sensor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] Please refer to Figure 1 and Figure 3 A polyurethane workpiece centrifugal casting device in the embodiment includes a support 1, the inner side of the support 1 is fixed with a processing table 2, the top end of the inner side of the support 1 is provided with a pouring pipe 3, the outer surface of the pouring pipe 3 is provided with a lifting assembly for driving it to move up and down, and the pouring pipe 3 is a corrugated pipe, which is convenient for the lifting assembly to stretch and contract it, the inside of the processing table 2 is provided with a centrifugal assembly 5, the inner cavity of the centrifugal assembly 5 is provided with a temperature and pressure sensor 6.

[0030] Secondly, the lifting assembly comprises two electric telescopic rods 41 fixed at the top of the inner side of the support 1, the output ends of the two electric telescopic rods 41 are fixed with a driving plate 42, a through hole is formed at the top of the driving plate 42, and the pouring pipe 3 is fixed to the inner side of the through hole, so that the two electric telescopic rods 41 can drive the pouring pipe 3 to move up and down on the inner side of the support 1 through the driving plate 42, a through hole is formed at the top of the support 1, the pouring pipe 3 is slidably connected to the inner side of the through hole, and the other end of the pouring pipe 3 is connected to a material box containing polyurethane liquid, so that the pouring pipe 3 can deliver the polyurethane liquid to the inner side of the support 1.

[0031] Please refer to Figures 2-3 The centrifugal assembly 5 in the embodiment comprises a rotating table 51, a motor 56, two supporting rods 57, a supporting block 52 fixedly installed on the outer surface of the rotating table 51, an inner ring gear 53 fixedly installed in the inner cavity of the rotating table 51, pinions 54 fixedly installed on the outer surfaces of the two supporting rods 57, a large gear 55 fixed to the output end of the motor 56, and limiting assemblies fixedly installed on the left and right ends of the rotating table 51.

[0032] The rotating table 51 is rotatably connected to the inner side of the through hole, so that the rotating table 51 can penetrate into the inside of the processing table 2 and rotate in the inside of the processing table 2.

[0033] The inner side of the through hole is provided with an annular sliding groove, and the supporting block 52 has an annular shape and is rotatably connected to the inner side of the annular sliding groove, so that the supporting block 52 can rotate in the inside of the processing table 2 and the rotating table 51 can stably rotate in the inside of the processing table 2.

[0034] In addition, the motor 56 is fixed to the bottom of the inner side of the support 1, and the two supporting rods 57 are rotatably connected to the bottom of the inner side of the support 1 through bearings, so that the two supporting rods 57 can stably drive the two pinions 54 to rotate at the bottom of the inner side of the support 1.

[0035] Meanwhile, the left and right ends of the inner cavity of the inner ring gear 53 are engaged with the opposite sides of the two pinions 54, and the large gear 55 is located between the two pinions 54, so that the large gear 55 is engaged with the two pinions 54, thereby enabling the two pinions 54 to be engaged with the inner ring gear 53, and the large gear 55 can drive the inner ring gear 53 to rotate through the two pinions 54, that is, the inner ring gear 53 can drive the rotating table 51 to rotate in the inside of the processing table 2.

[0036] In addition, the rotating table 51 is in the shape of a circle with a hollow cavity and a missing lower end. A fixing hole is formed in the top of the rotating table 51. The temperature and pressure sensor 6 is fixed to the inner side of the fixing hole, so that the temperature and pressure sensor 6 can be fixed inside the rotating table 51, and the sensing end of the temperature and pressure sensor 6 can penetrate the inside of the rotating table 51, so that the temperature and pressure sensor 6 can sense the temperature in the cavity of the mold, so as to be able to control the rotation speed of the centrifugal assembly 5 and the flow of polyurethane raw materials in the pouring pipe 3 in real time, thereby improving the preparation precision and efficiency.

[0037] Please refer to Figure 2 The limiting assembly in the embodiment includes two L-shaped plates 58, an electric push rod 59 fixedly installed on the inner side walls of the two L-shaped plates 58, and a positioning plate 510 fixedly installed on the output end of the electric push rod 59. In this way, the polyurethane workpiece mold can be fixed to the upper end of the rotating table 51, so that the rotating table 51 can stably drive the workpiece mold to rotate.

[0038] It should be noted that the temperature and pressure sensor 6 and the electronic components appearing in the specification are all well known in the prior art. The control method of the present embodiment is controlled by a controller. The electronic components appearing in the specification are all connected with the controller and the power supply. The control circuit of the controller can be realized by simple programming of those skilled in the art. The power supply is also well known in the art. Therefore, the control method and the circuit connection of the present embodiment will not be explained in detail.

[0039] The working principle of the above embodiment is as follows:

[0040] In use, when the polyurethane workpiece is poured, the workpiece mold is placed on the top end of the rotating table 51. The two electric push rods 59 push the two positioning plates 510 to move relative to each other, so that the two positioning plates 510 can clamp and fix the workpiece mold, so that the workpiece mold can be stably placed on the top end of the rotating table 51. Then, the lifting assembly drives the pouring pipe 3 to move to the pouring port of the mold. While the pouring pipe 3 fills the polyurethane liquid into the workpiece mold, the output end of the motor 56 drives the large gear 55 to rotate, so that the large gear 55 meshes with the two small gears 54, thereby enabling the two small gears 54 to mesh with the inner ring gear 53, so as to drive the inner ring gear 53 to rotate, thereby enabling the inner ring gear 53 to drive the rotating table 51 to rotate in the processing table 2, so that the rotating table 51 can drive the workpiece mold to rotate, thereby enabling the polyurethane liquid in the workpiece mold to be subjected to centrifugal force, so that the centrifugal force can remove the bubbles in the polyurethane raw materials, thereby improving the density and performance of the workpiece.

Claims

1. A centrifugal casting device for polyurethane workpieces, comprising a support (1), characterized in that: The inner side of the support (1) is fixed with a processing table (2), the top end of the inner side of the support (1) is provided with a pouring pipe (3), the outer surface of the pouring pipe (3) is provided with a lifting assembly for driving it to move up and down, the inside of the processing table (2) is provided with a centrifugal assembly (5), the inner cavity of the centrifugal assembly (5) is provided with a temperature and pressure sensor (6); The centrifugal assembly (5) comprises a rotating table (51), a motor (56), two supporting rods (57), a supporting block (52) fixedly installed on the outer surface of the rotating table (51), an inner ring gear (53) fixedly installed in the inner cavity of the rotating table (51), a pinion (54) fixedly installed on the outer surfaces of the two supporting rods (57), a large gear (55) fixed on the output end of the motor (56) and a limiting assembly fixedly installed on the left and right ends of the rotating table (51).

2. A centrifugal casting device for polyurethane workpieces according to claim 1, characterized in that: The top of the processing table (2) is provided with a through hole, and the rotating table (51) is rotationally connected to the inner side of the through hole.

3. A centrifugal casting device for polyurethane workpieces according to claim 2, wherein: The inner side of the through hole is provided with an annular sliding groove, and the supporting block (52) is annular.

4. A centrifugal casting device for polyurethane workpieces according to claim 1, characterized in that: The motor (56) is fixed to the bottom of the inner side of the support (1), and the two supporting rods (57) are rotationally connected to the bottom of the inner side of the support (1) through bearings.

5. A centrifugal casting device for polyurethane workpieces according to claim 1, characterized in that: The opposite sides of the two pinions (54) are engaged with the left and right ends of the inner cavity of the inner ring gear (53), and the large gear (55) is located between the two pinions (54).

6. A centrifugal casting device for polyurethane workpieces according to claim 1, characterized in that: The limiting assembly comprises two L-shaped plates (58), an electric push rod (59) fixedly installed on the inner side walls of the two L-shaped plates (58) and a positioning plate (510) fixedly installed on the output end of the electric push rod (59).

7. A centrifugal casting device for polyurethane workpieces as defined in claim 1, wherein: The rotating table (51) is hollow in the inner cavity and is circular in shape with the lower end missing, the top of the rotating table (51) is provided with a fixed hole, and the temperature and pressure sensor (6) is fixed to the inner side of the fixed hole.

8. A centrifugal casting device for polyurethane workpieces according to claim 1, characterized in that: The lifting assembly comprises two electric telescopic rods (41) fixed on the top of the inner side of the support (1), and a driving plate (42) is fixed on the output end of the two electric telescopic rods (41).

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