Foaming box with horizontal adjustment function

Abstract

The utility model relates to a foaming box with a horizontal adjustment function, and mainly solves the technical problems that in the prior art, when polyurethane in a conventional shape or a special shape is foamed, a composite material in the foaming box is slow in backflow and uneven in flowing property, and corners or special-shaped corners are locally torn. The foaming box with the horizontal adjustment function comprises a foaming box body (1), a horizontal adjustment device, an infrared horizontal detection device and a control unit, the foaming box body (1) is installed on the horizontal adjustment device, and the infrared horizontal detection device is installed on the foaming box body (1). And the horizontal adjusting device comprises a first bottom frame (2), a second bottom frame (3), supporting legs, four hydraulic oil cylinders and a servo valve. According to the technical scheme, the problems are well solved, and the device can be applied to the polyurethane box type foaming industry.

Description

Technical Field

[0001] The utility model relates to a foaming box with level adjustment. Background Art

[0002] At present, for polyurethane box foaming, the foam box is usually moved to the center of the foaming gun head, and the gun head is close to the bottom of the foam box to start discharging the material. During the foaming process, due to various reasons, the foaming box is not level, the raw material itself or the raw material after stirring and mixing has high viscosity and weak fluidity, resulting in uneven flow at the four corners far from the center of the spraying, and slow reflux of raw materials in the special-shaped parts of the special-shaped mold cavity, so that the foaming material begins to rise and the local position is still not filled, affecting the foam structure and thus the quality. After maturation, the surrounding of the foam material and the reflux of the mold cavity material are often easy to break and the tensile performance is not up to standard. In the related art, the spraying method is usually changed to adopt movable spraying, multi-hole injection and other methods to reduce the flow range of the material so that the material can form a confluence faster and fill evenly. However, by changing to mobile spraying, the foaming gun head needs to be modified. At the same time, there are problems such as difficulty in cleaning the gun head and inconvenience in the foaming operation with special-shaped mold cavities. Utility Model Content

[0003] The technical problem to be solved by the utility model is that, in the prior art, when polyurethane is foamed in a conventional shape or a special shape, the combined materials in the foaming box have slow reflux and uneven fluidity, resulting in local tearing of corners or special-shaped corners. A new foaming box with horizontal adjustment is provided. The foaming box can be adjusted horizontally and has the advantage of enabling the material to flow more quickly and ensuring uniform foaming of the material.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a foaming box with horizontal adjustment, comprising a foaming box 1, a horizontal adjustment device, an infrared horizontal detection device and a control unit, characterized in that the foaming box 1 is installed on the horizontal adjustment device, and the horizontal adjustment device comprises a first base frame 2, a second base frame 3, supporting feet, 4 hydraulic cylinders and a servo valve; an infrared horizontal detection device is installed above the foaming box 1, and the infrared horizontal detection device consists of a fixing device 6 and an infrared sensor 5; the control unit comprises a PLC control cabinet; the input end of the PLC control cabinet is connected to the infrared sensor 5, the output end of the PLC control cabinet is connected to the servo valve, and the servo valve is connected to the hydraulic cylinder to control the hydraulic cylinder to rise and fall.

[0005] In the above technical solution, preferably, the hydraulic cylinders respectively include a first hydraulic cylinder 41, a second hydraulic cylinder 42, a third hydraulic cylinder 43 and a fourth hydraulic cylinder 44; the first hydraulic cylinder 41 and the second hydraulic cylinder 42 are located on the same side, and the top ends of the first hydraulic cylinder 41 and the second hydraulic cylinder 42 are fixed on the first base frame 2; the third hydraulic cylinder 43 and the fourth hydraulic cylinder 44 are located on the same side, and the top ends of the third hydraulic cylinder 43 and the fourth hydraulic cylinder 44 are fixed on the second base frame 3.

[0006] In the above technical solution, preferably, it is characterized in that the supporting foot is fixedly connected to the bottom end of the hydraulic cylinder.

[0007] In the above technical solution, preferably, it is characterized in that the first base frame 2 and the second base frame 3 are connected by a positioning pin 7.

[0008] In the above technical solution, preferably, it is characterized in that the infrared sensor 5 is located directly above the foaming box 1 .

[0009] In the above technical solution, preferably, the first hydraulic cylinder 41 and the second hydraulic cylinder 42 are raised and lowered synchronously; the third hydraulic cylinder 43 and the fourth hydraulic cylinder 44 are raised and lowered synchronously.

[0010] In the above technical solution, preferably, a special-shaped mold cavity 8 is provided inside the foaming box 1 .

[0011] The utility model provides a foaming box with level adjustment. An infrared level detection device is used to detect the flow state of materials during foaming in real time. The level adjustment device is adjusted by a PLC control cabinet to control the lifting and lowering of the left and right ends of the foaming box, so that the materials can be leveled faster to complete the confluence, the foaming is uniform, the physical properties of the prepared board are uniform, and better technical effects are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a structural schematic diagram of a foaming box with horizontal adjustment of the utility model;

[0014] Figure 2 It is a schematic diagram of the detection points of the special-shaped foam in Example 1 of the utility model.

[0015] Reference numerals:

[0016] 1-foaming box, 2-first base frame, 3-second base frame, 41-first hydraulic cylinder, 42-second hydraulic cylinder, 43-third hydraulic cylinder, 44-fourth hydraulic cylinder, 5-infrared sensor, 6-fixing device, 7-locating pin, 8-special-shaped mold cavity. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] [Example 1]

[0019] 1. Prepare a foaming box with horizontal adjustment, including a foaming box 1, a horizontal adjustment device, an infrared horizontal detection device and a control unit, characterized in that the foaming box 1 is installed on the horizontal adjustment device, and the horizontal adjustment device includes a first base frame 2, a second base frame 3, supporting feet, 4 hydraulic cylinders and a servo valve; an infrared horizontal detection device is installed above the foaming box 1, and the infrared horizontal detection device consists of a fixing device 6 and an infrared sensor 5; the control unit includes a PLC control cabinet; the input end of the PLC control cabinet is connected to the infrared sensor 5, the output end of the PLC control cabinet is connected to the servo valve, and the servo valve is connected to the hydraulic cylinder to control the hydraulic cylinder to rise and fall. The hydraulic cylinders include a first hydraulic cylinder 41, a second hydraulic cylinder 42, a third hydraulic cylinder 43 and a fourth hydraulic cylinder 44; the first hydraulic cylinder 41 and the second hydraulic cylinder 42 are located on the same side, and the top ends of the first hydraulic cylinder 41 and the second hydraulic cylinder 42 are fixed on the first chassis 2; the third hydraulic cylinder 43 and the fourth hydraulic cylinder 44 are located on the same side, and the top ends of the third hydraulic cylinder 43 and the fourth hydraulic cylinder 44 are fixed on the second chassis 3. The support foot is fixedly connected to the bottom end of the hydraulic cylinder; the first chassis 2 and the second chassis 3 are connected by a positioning pin; the foaming box 1 is also provided with a special-shaped mold cavity 8.

[0020] The infrared sensor 5 is located just above the foaming box 1; the infrared level detector switch is turned on in the PLC control cabinet, and the height of the irradiated infrared rays is adjusted to 2 to 3 cm above the bottom of the foaming box.

[0021] 2. Prepare 32 density polyurethane composite material;

[0022] 3. Adjust the foaming box: After the foaming machine gun starts to spit out the material, the infrared sensor will feed back the detected material results to the PLC control cabinet through the data line. The PLC control cabinet will send the adjustment command to the servo valve through judgment. The servo valve controls the lifting and lowering of the hydraulic cylinder to ensure that the material is quickly merged and the material is uniform and level. Among them, the first hydraulic cylinder 41 and the second hydraulic cylinder 42 are lifted and lowered synchronously; the third hydraulic cylinder 43 and the fourth hydraulic cylinder 44 are lifted and lowered synchronously.

[0023] 4. Slice test: The prepared foam was sliced, and its upper layer, middle layer and lower layer were tested. The test results are shown in Table 1.

[0024] [Comparative Example 1]

[0025] 1. Prepare the foaming box;

[0026] 2. Prepare the same polyurethane composite material with a density of 32 as in Comparative Example 1;

[0027] 3. Foaming: The nozzle of the foaming machine injects material into the middle of the foaming box, allowing it to flow and foam freely;

[0028] 4. Slice test: The prepared foam was sliced, and its upper layer, middle layer and lower layer were tested. The test results are shown in Table 1.

[0029] Table 1 Physical property test data of polyurethane foam prepared in Example 1 and Comparative Example 1

[0030]

[0031]

[0032] Among them, points 2, 4, 5, and 7 are the positions of special-shaped tooling. For specific locations, see the attached Figure 2 .

[0033] As can be seen from Table 1, compared with the tensile strength of Comparative Example 1, the tensile strength of the material prepared in Example 1 is improved in the upper, middle and lower parts, with the highest increase reaching 34%; the relative elongation is increased by 25%.

[0034] It can be seen that by using a foaming box that can be adjusted horizontally, the material can flow to the surroundings faster and can better complete the confluence at the place with special-shaped tooling, avoiding quality problems such as board breakage and poor stretching caused by the combined material having already risen but not yet forming a confluence. The tensile performance of the foam material is improved by 10% to 15% after horizontal adjustment. At the same time, it avoids the problem of low material yield due to uneven material flow, local lowness around, and uneven foaming. After adopting the technical solution of the utility model, the material flow can be controlled and flowed evenly in the foaming box, and the foaming is uniform, thereby improving the material yield and achieving better technical effects.

Claims

1. A foaming box with level adjustment, comprising a foaming box (1), a level adjustment device, an infrared level detection device and a control unit, characterized in that: The foaming box (1) is installed on a horizontal adjustment device, and the horizontal adjustment device includes a first base frame (2), a second base frame (3), supporting feet, four hydraulic cylinders and a servo valve; an infrared horizontal detection device is installed above the foaming box (1), and the infrared horizontal detection device is composed of a fixing device (6) and an infrared sensor (5); the control unit includes a PLC control cabinet; the input end of the PLC control cabinet is connected to the infrared sensor (5), the output end of the PLC control cabinet is connected to the servo valve, and the servo valve is connected to the hydraulic cylinder.

2. The foaming box with level adjustment according to claim 1, characterized in that: The hydraulic cylinders respectively include a first hydraulic cylinder (41), a second hydraulic cylinder (42), a third hydraulic cylinder (43) and a fourth hydraulic cylinder (44); the first hydraulic cylinder (41) and the second hydraulic cylinder (42) are located on the same side, and the top ends of the first hydraulic cylinder (41) and the second hydraulic cylinder (42) are fixed on the first base frame (2); the third hydraulic cylinder (43) and the fourth hydraulic cylinder (44) are located on the same side, and the top ends of the third hydraulic cylinder (43) and the fourth hydraulic cylinder (44) are fixed on the second base frame (3).

3. The foaming box with level adjustment according to claim 1, characterized in that: The supporting foot is fixedly connected to the bottom end of the hydraulic cylinder.

4. The foaming box with level adjustment according to claim 1, characterized in that: The first base frame (2) and the second base frame (3) are connected via positioning pins (7).

5. The foaming box with level adjustment according to claim 1, characterized in that: The infrared sensor (5) is located directly above the foaming box (1).

6. The foaming box with level adjustment according to claim 2, characterized in that: The first hydraulic cylinder (41) and the second hydraulic cylinder (42) are raised and lowered synchronously; the third hydraulic cylinder (43) and the fourth hydraulic cylinder (44) are raised and lowered synchronously.

7. The foaming box with level adjustment according to claim 1, characterized in that: A special-shaped mold cavity (8) is provided inside the foaming box (1).

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