PU (polyurethane) foaming integrated forming die for automobile sound insulation cotton

Abstract

The utility model discloses an automobile sound insulation cotton PU polyurethane foaming integrated forming die, and relates to the technical field of integrated forming dies, the automobile sound insulation cotton PU polyurethane foaming integrated forming die comprises a lower mounting seat, a lower die is arranged on the top surface of the lower mounting seat, and a plurality of first electric push cylinders are symmetrically mounted on the two sides of the lower mounting seat; fixing holes corresponding to the output ends of the first electric push cylinders are formed in the two sides of the outer wall of the lower mold, a plurality of hinge bases are horizontally arranged on one side of the lower mounting base, and upper mounting bases are fixedly connected to rotating shafts of the hinge bases; the first motor is matched with the large gear and the small gear, the first motor drives the small gear to rotate and drives the large gear and the upper installation base connected with the large gear to rotate, the opening and closing angle of the upper die can be conveniently adjusted, operation convenience is improved, and then the function of conveniently opening and closing the die can be achieved; and finally, the problem that the PU is not uniform after being injected into the mold due to the fact that a base of existing equipment is fixed is solved, and the quality and efficiency of foaming and forming the PU of the automobile sound insulation cotton are improved.

Description

Technical Field

[0001] This utility model relates to the field of integrated molding die technology, and in particular to an integrated molding die for automotive sound insulation cotton PU polyurethane foam. Background Technology

[0002] In the automotive manufacturing industry, the performance of sound insulation cotton plays a key role in improving the in-vehicle driving experience. PU polyurethane foam sound insulation cotton has become the preferred choice for automotive sound insulation materials due to its excellent sound insulation, heat insulation and shock absorption performance.

[0003] Existing integrated molding dies for automotive sound insulation cotton (PU) foam typically have a fixed base. During the foaming process, the high fluidity and viscosity of PU liquid make it difficult for the fixed base to guide the material evenly by adjusting the mold's orientation. This results in uneven filling of the PU polyurethane within the mold during actual production, leading to localized areas that are too thick or too thin. For example, in complex-shaped automotive sound insulation cotton molds, the material may be insufficiently accumulated in corners or recesses, while being overfilled in flatter, open areas. Consequently, the produced sound insulation cotton exhibits inconsistent thickness and density. Therefore, improvements are needed to address these issues. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an integrated molding mold for automotive sound insulation cotton PU polyurethane foam.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an integrated molding mold for automotive sound insulation cotton PU polyurethane foam, including a lower mounting base, a lower mold provided on the top surface of the lower mounting base, multiple first electric push cylinders symmetrically mounted on both sides of the lower mounting base, fixing holes corresponding to the output ends of the first electric push cylinders being opened on both sides of the outer wall of the lower mold, and multiple hinge seats horizontally provided on one side of the lower mounting base, with an upper mounting base fixedly connected to the rotating shaft of the hinge seat.

[0006] Preferably, an upper mold is mounted on the upper mounting base by fixing bolts, two fixing plates are symmetrically mounted on one end of the upper mounting base, and a corresponding pin hole is opened on one end of the lower mounting base.

[0007] Preferably, a large gear is sleeved in the middle section of the rotating shaft of the hinge seat, and a small gear is meshed with the lower end of the large gear. A first rotating shaft passes through the axis of the small gear, and a first motor is coaxially fixedly installed on the outer wall of the hinge seat.

[0008] Preferably, four overlapping rods are symmetrically arranged at both ends of the lower mounting base, and overlapping columns are attached to the bottom surfaces of the four overlapping rods. A base is provided at the bottom end of the overlapping column, and a bidirectional electric push cylinder is provided in the center of the top surface of the base.

[0009] Preferably, a second motor is installed on one side of the base, and the output shaft of the second motor is coaxially fixed to a second rotating shaft. One end of a first connecting plate is symmetrically provided at both ends of the second rotating shaft, and the other end of the first connecting plate is hinged to one end of a second connecting plate. The other end of the second connecting plate is hinged to the lower mounting base.

[0010] Preferably, both output shafts of the bidirectional electric pusher cylinder are fixedly connected to U-shaped plates, and rectangular blocks extend inward from both ends of the U-shaped plates. The overlapping column is located on one side of the overlapping rod and has a rectangular groove corresponding to the rectangular block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model utilizes the cooperation of a first motor with a large gear and a small gear. The first motor drives the small gear to rotate, which in turn drives the large gear and the connected upper mounting base to rotate, facilitating the adjustment of the opening and closing angle of the upper mold and improving operational convenience. This enables convenient mold opening and closing. Furthermore, through the cooperation of a bidirectional electric push cylinder with a U-shaped plate, an overlapping column, a second motor with a first connecting plate, and a second connecting plate, the bidirectional electric push cylinder first pushes one end of the U-shaped plate into the rectangular groove of the overlapping column. Then, the second motor drives the second rotating shaft to rotate, causing the first and second connecting plates to cooperate, driving the lower mounting base to tilt towards the end inserted into the rectangular groove. The tilt allows the PU polyurethane injected into the mold to flow and distribute better in that direction. After the operation in this direction is completed, the lower mounting base resets, and the bidirectional electric pusher cylinder pushes the U-shaped plate at the other end to insert into the corresponding rectangular groove. The second motor then drives the lower mounting base to tilt to the other end, which allows the PU polyurethane to be evenly distributed in the opposite direction as well. This improves the ability to control the distribution of PU polyurethane in the mold, and enables the function of flexibly adjusting the tilt angle and direction of the mold according to the injection of PU polyurethane. Ultimately, this solves the problem of uneven PU polyurethane injection into the mold caused by the fixed base of the existing equipment, and improves the quality and efficiency of PU polyurethane foaming molding of automotive sound insulation cotton. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a first-view schematic diagram of the overall structure proposed in this utility model;

[0014] Figure 2 This is a second-view schematic diagram of the overall structure proposed in this utility model;

[0015] Figure 3 This is an enlarged schematic diagram of the overall structure of the large gear proposed in this utility model;

[0016] Figure 4 This is an enlarged schematic diagram of the overall structure of the base proposed in this utility model.

[0017] The numbers in the diagram are: 1. Lower mounting base; 2. Lower mold; 3. First electric push cylinder; 4. Upper mold; 5. Large gear; 6. Small gear; 7. Connecting rod; 8. Connecting column; 9. Bidirectional electric push cylinder; 10. Second motor; 11. U-shaped plate; 12. Base. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figure 1-4 The integrated molding mold for automotive sound insulation cotton PU polyurethane foam of this utility model includes a lower mounting base 1, a lower mold 2 on the top surface of the lower mounting base 1, and multiple first electric push cylinders 3 symmetrically mounted on both sides of the lower mounting base 1. Fixing holes corresponding to the output ends of the first electric push cylinders 3 are opened on both sides of the outer wall of the lower mold 2. Multiple hinge seats are horizontally arranged on one side of the lower mounting base 1, and an upper mounting base is fixedly connected to the rotating shaft of the hinge seat. The lower mounting base 1 provides a mounting foundation for the lower mold 2. The first electric push cylinders 3 can be connected to the lower mold 2 through the fixing holes, facilitating the fixing and adjustment of the lower mold 2. The hinge seats and the upper mounting base provide a rotational foundation for the opening and closing of the upper mold 4. The upper mold 4 is mounted on the upper mounting base by fixing bolts. One end of the upper mounting base... Two fixing plates are symmetrically installed. One end of the lower mounting base 1 has a corresponding pin hole for the fixing plate. The fixing bolts facilitate the installation and disassembly of the upper mold 4, making maintenance and replacement convenient. The fixing plates cooperate with the pin holes to position and fix the upper and lower mounting bases 1 when the mold is closed, ensuring the accuracy of the mold. A large gear 5 is sleeved in the middle of the rotating shaft of the hinge base. A small gear 6 is meshed at the lower end of the large gear 5. A first rotating shaft passes through the axis of the small gear 6. A first motor is coaxially fixed to the outer wall of the hinge base. The first motor drives the small gear 6 to rotate, which drives the large gear 5 to rotate through gear meshing, thereby causing the upper mounting base to rotate around the rotating shaft of the hinge base, realizing the opening and closing of the upper mold 4. This is easy to operate and the opening and closing action is stable.

[0020] In this utility model, four overlapping rods 7 are symmetrically arranged at both ends of the lower mounting base 1. Each of the four overlapping rods 7 has an overlapping post 8 attached to its bottom surface. A base 12 is located at the bottom end of the overlapping post 8. A bidirectional electric push cylinder 9 is located in the center of the top surface of the base 12. The overlapping rods 7 and overlapping posts 8 provide support for the lower mounting base 1. The bidirectional electric push cylinder 9 can push the U-shaped plate 11 to move, thereby adjusting the position of the U-shaped plate 11, preparing for subsequent adjustments to the posture of the lower mounting base 1, and increasing the operability of mold adjustment. A second motor 10 is installed on one side of the base 12. The output shaft of the second motor 10 is coaxially fixed to a second rotating shaft. One end of a first connecting plate is symmetrically arranged at both ends of the second rotating shaft. One end of the first connecting plate is hinged to one end of the second connecting plate, and the other end of the second connecting plate is hinged to the lower mounting seat 1. The second motor 10 drives the second rotating shaft to rotate. Through the cooperation of the first connecting plate and the second connecting plate, the lower mounting seat 1 can be tilted, which is convenient to adjust the posture of the mold to meet the uniform distribution requirements during PU polyurethane injection. Both output shafts of the bidirectional electric push cylinder 9 are fixed with U-shaped plates 11. Both ends of the U-shaped plates 11 have rectangular blocks extending inward. The overlapping column 8 is located on one side of the overlapping rod 7 and has a rectangular groove corresponding to the rectangular block. The bidirectional electric push cylinder 9 pushes the U-shaped plate 11 to move, so that the rectangular block slides in the rectangular groove and thus adjusts the tilt direction of the lower mounting seat 1.

[0021] Working principle: When using this utility model, the first motor is started first, which drives the small gear 6 to rotate. Through meshing with the large gear 5, the large gear 5 is driven to rotate, causing the upper mounting base to rotate around the hinged base shaft. This causes the upper mold 4 to move downward and close with the lower mold 2. At the same time, the upper mounting base fixing plate is inserted into the pin hole of the lower mounting base 1 for positioning. The output end of the first electric push cylinder 3 is inserted into the fixing hole of the lower mold 2 for reinforcement. Then, the bidirectional electric push cylinder 9 works, and one of its output shafts pushes the fixed U-shaped plate 11 to move. The rectangular block at one end of the U-shaped plate 11 slides and inserts into the rectangular groove of the overlapping column 8. After the rectangular block is inserted, it will abut against the overlapping rod 7, with this contact point as the axis. Then, the second motor 10 is started, which drives the second rotating shaft to rotate, and the first connecting plates at both ends of the second rotating shaft rotate accordingly. Since the first connecting plate is hinged to the second connecting plate, and the other end of the second connecting plate is hinged to the lower mounting base 1, the rotation of the first connecting plate will cause the second connecting plate to push the lower mounting base 1 to tilt towards that end around the position with the contact point between the overlapping rod 7 and the rectangular block as the axis, allowing the PU polyurethane to flow and distribute better in this direction. After completing the operation in this direction, the lower mounting base 1 returns to its original position. In position, the other output shaft of the bidirectional electric push cylinder 9 pushes the U-shaped plate 11 at the other end to move, so that the rectangular block of the U-shaped plate 11 at this end inserts into the rectangular groove of the corresponding overlapping column 8 and abuts against the overlapping rod 7, forming a rotation axis again; the second motor 10 drives the lower mounting seat 1 to tilt towards this end again, so that the PU polyurethane can also be evenly distributed in the opposite direction. After the PU polyurethane foam is formed, the first motor reverses, the small gear 6 rotates in the opposite direction, driving the large gear 5 to rotate in the opposite direction, and the upper mounting seat rotates upward around the axis, so that the upper mold 4 and the lower mold 2 are separated, and the mold opening is completed.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An integrated molding mold for automotive sound insulation cotton PU polyurethane foam, including a lower mounting base (1), characterized in that: The lower mounting base (1) has a lower mold (2) on its top surface. Multiple first electric push cylinders (3) are symmetrically mounted on both sides of the lower mounting base (1). Fixing holes corresponding to the output ends of the first electric push cylinders (3) are opened on both sides of the outer wall of the lower mold (2). Multiple hinge seats are horizontally provided on one side of the lower mounting base (1). An upper mounting base is fixedly connected to the rotating shaft of the hinge seat.

2. The integrated molding mold for automotive sound insulation cotton PU polyurethane foam according to claim 1, characterized in that: The upper mounting base is fitted with an upper mold (4) by fixing bolts. Two fixing plates are symmetrically installed on one end of the upper mounting base. The lower mounting base (1) has a corresponding pin hole on one end.

3. The integrated molding mold for automotive sound insulation cotton PU polyurethane foam according to claim 2, characterized in that: A large gear (5) is sleeved in the middle section of the rotating shaft of the hinge seat. A small gear (6) is meshed with the lower end of the large gear (5). A first rotating shaft passes through the axis of the small gear (6). A first motor is coaxially fixedly installed on the outer wall of the hinge seat.

4. The integrated molding mold for automotive sound insulation cotton PU polyurethane foam according to claim 3, characterized in that: The lower mounting base (1) has four overlapping rods (7) symmetrically arranged at both ends. The bottom surfaces of the four overlapping rods (7) are all connected to overlapping columns (8). The bottom end of the overlapping column (8) is provided with a base (12). The top surface of the base (12) is provided with a bidirectional electric push cylinder (9).

5. The integrated molding mold for automotive sound insulation cotton PU polyurethane foam according to claim 4, characterized in that: A second motor (10) is installed on one side of the base (12). The output shaft of the second motor (10) is coaxially fixed to a second rotating shaft. One end of a first connecting plate is symmetrically provided at both ends of the second rotating shaft. The other end of the first connecting plate is hinged to one end of a second connecting plate. The other end of the second connecting plate is hinged to the lower mounting base (1).

6. The integrated molding mold for automotive sound insulation cotton PU polyurethane foam according to claim 5, characterized in that: Both output shafts of the bidirectional electric push cylinder (9) are fixedly connected to U-shaped plates (11), and rectangular blocks extend inward from both ends of the U-shaped plates (11). The overlapping column (8) is located on one side of the overlapping rod (7) and has a rectangular groove corresponding to the rectangular block.

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