Polyurethane foaming and shaping device

Abstract

The utility model discloses a polyurethane foaming shaping device which comprises a shaping frame, an outer mold and an inner mold, the outer mold and the inner mold are arranged on the shaping frame, a mold cavity is formed between the inner mold and the outer mold, a net-shaped framework is arranged in the mold cavity, and the net-shaped framework is hung on the inner mold through a connecting line; the shaping frame is further provided with a lifting assembly for driving the inner mold to ascend and descend. The inner mold and the outer mold are opened up and down, on one hand, the net-shaped framework can be conveniently connected with the inner mold in a hanging mode, the net-shaped framework can be centered in a mold cavity during mold closing, and the yield of heat preservation box preparation is increased; and on the other hand, after the mold is opened, the net-shaped framework can be connected with the inner mold firstly, then polyurethane is sprayed on the net-shaped framework, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of foaming, in particular to a polyurethane foaming shaping device. BACKGROUND

[0002] With the gradual maturity of new material technology, polyurethane as a kind of thermal insulation material gradually replaces the traditional foam and other thermal insulation materials due to its superior thermal insulation performance. As a kind of foaming new material, polyurethane can form a thermal insulation box in a foaming shaping device according to the needs of users.

[0003] The thermal insulation box can have a thermal insulation effect on the articles. However, the tensile and bending resistance of polyurethane foaming material is usually not as good as that of metal or other hard plastic. Therefore, although the thermal insulation box prepared by polyurethane foaming has good thermal insulation effect, its strength is poor, and if the articles to be kept warm in the thermal insulation box are heavy, the thermal insulation box is difficult to bear the weight and is easily damaged.

[0004] The existing method is to increase the mesh skeleton in the foaming process to improve the strength of the thermal insulation box. However, the mesh skeleton is not easy to be in the central state in the foaming process, and is easy to be inclined. Therefore, the yield of the thermal insulation box with the skeleton in the foaming process is not high. CONTENT OF THE INVENTION

[0005] The present application aims to overcome the shortcomings of the prior art and provide a polyurethane foaming shaping device.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] A polyurethane foaming shaping device, comprising a shaping frame, an outer mold and an inner mold arranged on the shaping frame, a mold cavity is formed between the inner mold and the outer mold, a mesh skeleton is arranged in the mold cavity, and the mesh skeleton is suspended on the inner mold through a connecting line; the shaping frame is further provided with a lifting assembly for driving the inner mold to lift.

[0008] Preferably, the top of the inner mold has an extension, the lower end of the connecting line is fixedly connected with the upper end of the mesh skeleton, and the upper end of the connecting line is fixedly connected with the lower surface of the extension.

[0009] Preferably, the outer mold has a rectangular cavity with an upward opening, and part of the inner mold is located in the rectangular cavity and the lower surface of the extension abuts against the top of the outer mold.

[0010] Preferably, the distance between the mesh skeleton and the outer mold is equal to the distance between the mesh skeleton and the inner mold.

[0011] Preferably, the lifting assembly comprises a support rod fixed on the shaping frame, a winding wheel rotatably arranged on the support rod, and a pull rope arranged on the winding wheel; the winding wheel is further provided with a wrench capable of driving the winding wheel to rotate, and one end of the pull rope is fixedly connected with the inner mold.

[0012] Preferably, the wrench comprises a first extension rod fixedly connected with the winding wheel and a second extension rod rotatably arranged at the end of the first extension rod, the second extension rod is in non-detachable connection with the first extension rod; the end of the second extension rod is provided with a handle; the support rod is further provided with an abutting portion, and the handle can abut against the abutting portion.

[0013] Preferably, the top of the outer mold is further provided with a cutting knife which is slidably arranged and capable of moving towards the connecting line.

[0014] Preferably, the cutting knife is further provided with a grip.

[0015] In summary, the utility model has the following beneficial technical effects:

[0016] The inner mold and the outer mold are in an upper-lower mold opening mode, on the one hand, the meshed framework can be connected with the inner mold in a hanging mode, and the meshed framework can be centered in the mold cavity when the mold is closed, thereby improving the yield of the incubator; on the other hand, after the mold is opened, the meshed framework can be connected with the inner mold first and then be sprayed with polyurethane, thereby improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall structure schematic view of the utility model.

[0018] Figure 2 is the cross-sectional structure schematic view of the utility model.

[0019] Figure 3 is the partial structure schematic view of the utility model.

[0020] Figure 4 is Figure 2 is the enlarged structure schematic view of A in the middle.

[0021] Mark 1, the shaping frame; 2, the outer mold; 3, the inner mold; 31, the extension; 4, the mold cavity; 41, the meshed framework; 42, the connecting line; 5, the lifting assembly; 51, the support rod; 52, the winding wheel; 53, the pull rope; 54, the wrench; 55, the first extension rod; 56, the second extension rod; 57, the handle; 58, the abutting portion; 6, the cutting knife; 61, the grip. DETAILED DESCRIPTION

[0022] The orientation terms mentioned or possibly mentioned in the present specification, such as up, down, left, right, front, back, front side, back side, top, bottom, etc., are defined with respect to the structure shown in the drawings, and are relative concepts, so they can change accordingly according to different positions and different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", "third" or similar expressions are only used for description and differentiation purposes, and cannot be understood as indicating or implying the relative importance of the corresponding components.

[0023] The following will be described in detail in combination with the accompanying drawings. Figure 1 - the accompanying drawings Figure 4 The present application will be further described in detail.

[0024] The present application discloses a polyurethane foaming shaping device.

[0025] A polyurethane foaming shaping device, comprising a shaping frame 1, an outer mold 2 and an inner mold 3 arranged on the shaping frame 1, the inner mold 3 is hung with a mesh skeleton 41 through a connecting line 42, and the shaping frame 1 is further provided with a lifting assembly 5 for driving the inner mold 3 to lift. The lifting assembly 5 lowers the inner mold 3, so that the outer mold 2 and the inner mold 3 are combined, at this time, the mold cavity 4 is formed between the inner mold 3 and the outer mold 2, and at this time, the mesh skeleton 41 is located in the mold cavity 4.

[0026] The distance between the mesh skeleton 41 and the outer mold 2 is equal to the distance between the mesh skeleton 41 and the inner mold 3. The polyurethane to be foamed is coated on the mesh skeleton 41 and waits for foaming, and the foamed polyurethane will fill the mold cavity 4, at this time, since the distances between the mesh skeleton 41 and the outer mold 2 and the inner mold 3 are equal, the mesh skeleton 41 will be in the central state in the formed insulation box.

[0027] The lifting assembly 5 comprises a supporting rod 51, a winding wheel 52, a pull rope 53 and a wrench 54. The lower end of the supporting rod 51 is fixedly connected with the shaping frame 1, the winding wheel 52 is rotatably connected with the supporting rod 51, and one end of the wrench 54 passes through the supporting rod 51 and is fixedly connected with the central shaft of the winding wheel 52. By driving the wrench 54, the winding wheel 52 can be rotated. The pull rope 53 is wound on the winding wheel 52, one end of the pull rope 53 is fixedly connected with the winding wheel 52, and the other end of the pull rope 53 is fixedly connected with the inner mold 3. After the winding wheel 52 rotates, the inner mold 3 can be moved upward through the pull rope 53, so that the inner mold 3 and the outer mold 2 are separated from each other.

[0028] The wrench 54 includes a first extension rod 55, a second extension rod 56, and a handle 57. One end of the first extension rod 55 is fixedly connected to the winding roller 52, and the other end of the first extension rod 55 is rotatably connected to the second extension rod 56, with a preventable disengagement fit. The end of the second extension rod 56 away from the first extension rod 55 has a handle 57, allowing the operator to grip the handle 57 and rotate the wrench 54, causing the winding roller 52 to rotate. A support rod 51 and an abutment portion 58 are also included. The second extension rod 56 can rotate relative to the first extension rod 55, allowing the handle 57 to rotate relative to the first extension rod 55. As the second extension rod 56 rotates, the handle 57 can move to below the abutment portion 58. When the handle 57 abuts against the abutment portion 58, the wrench 54 is stopped, the winding roller stops rotating, and the inner mold 3 stops moving.

[0029] The top of the inner mold 3 has an extension 31, the lower end of the connecting line 42 is fixedly connected to the upper end of the mesh skeleton 41, and the upper end of the connecting line 42 is fixedly connected to the lower surface of the extension 31.

[0030] The outer mold 2 has an upward-opening rectangular cavity. When the inner mold 3 moves downward, a portion of the inner mold 3 is located within the rectangular cavity. The mold cavity 4 is formed after the lower surface of the extension 31 abuts against the top of the outer mold 2, and the polyurethane begins to foam.

[0031] A cutting blade 6 is slidably mounted on the top of the outer mold 2, and the cutting blade 6 is movable toward the connecting line 42. The cutting blade 6 also has a gripper 61.

[0032] The implementation principle of this embodiment is as follows: The lifting component 5 moves the inner mold 3 upward, suspending the mesh skeleton 41 on the inner mold 3 via connecting lines 42. The connecting lines 42 are ordinary yarns and can be connected to the mesh skeleton 41 and the extension 31 of the inner mold 3 using tape or glue. Polyurethane raw material is sprayed onto the mesh skeleton 41 using a spray gun. Then, the inner mold 3 is lowered, merging the outer mold 2 and the inner mold 3, at which point the mesh skeleton 41 is located inside the mold cavity 4. After the polyurethane foaming is complete, the cutting blade 6 is pushed by the gripper 61, which cuts the connecting lines 42. The inner mold 3 moves upward, separating from the outer mold 2. The blade of the cutting blade 6 presses against the foamed insulation box, separating the insulation box from the inner mold 3. Thus, the insulation box is completed.

[0033] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods without changing the essential spirit of this utility model. Therefore, the above specific embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as a limitation or restriction on the technical solution of this utility model. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A polyurethane foam shaping device, characterized in that: It includes a shaping frame (1), an outer mold (2) and an inner mold (3) disposed on the shaping frame (1), a mold cavity (4) is formed between the inner mold (3) and the outer mold (2), a mesh frame (41) is disposed in the mold cavity (4), and the mesh frame (41) is suspended from the inner mold (3) by a connecting line (42); the shaping frame (1) is also provided with a lifting component (5) for driving the inner mold (3) to rise and fall.

2. The polyurethane foaming and shaping device as described in claim 1, characterized in that: The top of the inner mold (3) has an extension (31), the lower end of the connecting line (42) is fixedly connected to the upper end of the mesh skeleton (41), and the upper end of the connecting line (42) is fixedly connected to the lower surface of the extension (31).

3. The polyurethane foaming and shaping device as described in claim 2, characterized in that: The outer mold (2) has a rectangular cavity with an upward opening, a portion of the inner mold (3) is located within the rectangular cavity, and the lower surface of the extension (31) abuts against the top of the outer mold (2).

4. The polyurethane foaming and shaping device as described in claim 1, characterized in that: The distance between the mesh skeleton (41) and the outer mold (2) is equal to the distance between the mesh skeleton (41) and the inner mold (3).

5. The polyurethane foaming and shaping device as described in claim 1, characterized in that: The lifting assembly (5) includes a support rod (51) fixed on the shaping frame (1), a winding wheel (52) rotatably mounted on the support rod (51), and a pull rope (53) mounted on the winding wheel (52). The winding wheel (52) is also equipped with a wrench (54) that can drive the winding wheel (52) to rotate, and one end of the pull rope (53) is fixedly connected to the inner mold (3).

6. The polyurethane foaming and shaping device as described in claim 5, characterized in that: The wrench (54) includes a first extension rod (55) fixedly connected to the winding wheel (52) and a second extension rod (56) rotatably disposed at the end of the first extension rod (55), the second extension rod (56) being anti-disengaged from the first extension rod (55); the end of the second extension rod (56) has a handle (57); the support rod (51) also has an abutment portion (58), the handle (57) being able to abut against the abutment portion (58).

7. The polyurethane foaming and shaping device as described in claim 1, characterized in that: A cutting blade (6) is slidably disposed on the top of the outer mold (2), and the cutting blade (6) is capable of moving toward the connecting line (42).

8. The polyurethane foaming and shaping device as described in claim 7, characterized in that: The cutting blade (6) also has a handle (61).

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