Mold for forming PU (polyurethane) material

Abstract

The utility model discloses a PU material forming die, and relates to the technical field of dies. Comprising a lower die, an upper die and a feeding mechanism, the upper die is located on the lower die, the feeding mechanism is located on one side of the lower die, the lower die comprises a lower fixing plate, a lower heat insulation plate and a cavity plate, the cavity plate is embedded in the lower heat insulation plate, the lower heat insulation plate is installed on the lower fixing plate, and a first electric heating wire is installed in the lower heat insulation plate; and the first electric heating wire is positioned between the lower heat insulation plate and the cavity plate. According to the PU material forming mold, a mold pressing sheet is grabbed from a material area through a vacuum suction cup, the mold pressing sheet is transferred to the mold through a pushing air cylinder, the mold pressing sheet is lifted to the position above a lower mold through a lifting air cylinder, the mold pressing sheet is transferred to the position above a cavity plate through a rotary air cylinder, and at the moment, the vacuum suction cup releases the sheet; a series of operations are automatically completed by a machine, manual assistance is not needed, the feeding efficiency is effectively improved, and the labor intensity of workers is reduced.

Description

A mold for molding PU material Technical Field

[0001] This utility model relates to the field of mold technology, specifically a mold for molding PU material. Background Technology

[0002] PU, or polyurethane, is a polymer compound formed by the reaction of isocyanate and polyol. PU materials have excellent physical properties, such as high strength, high toughness, wear resistance, and impact resistance. These properties make PU materials perform well in the manufacture of products with high strength requirements, such as footwear, tires, and conveyor belts. PU materials have good plasticity and can be processed into products of various shapes and sizes through various molding processes such as compression molding, injection molding, and extrusion. In addition, PU materials also have good adhesive properties and can be bonded to a variety of materials, providing more possibilities for product manufacturing.

[0003] Compression molding, also known as compression molding, is a molding method in which powdered, granular, fragmented, or fibrous plastic is placed into a heated mold, heated to melt it, and then pressure is applied to fill the mold cavity to form a molded product with the same shape as the mold cavity.

[0004] When molding products using PU material sheets, the material feeding is mainly done manually before molding. First, the sheet needs to be laid on the workbench manually, and then the mold is used to lay the material. This is inefficient, labor-intensive, and not conducive to reducing labor costs. Summary of the Invention

[0005] This invention provides a mold for molding PU material to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mold for molding PU material, comprising a lower mold, an upper mold, and a feeding mechanism, wherein the upper mold is located on the lower mold, and the feeding mechanism is located on one side of the lower mold;

[0007] The lower mold includes a lower fixed plate, a lower heat insulation plate, and a cavity plate. The cavity plate is embedded in the lower heat insulation plate, and the lower heat insulation plate is installed on the lower fixed plate. A first heating wire is installed in the lower heat insulation plate, and the first heating wire is located between the lower heat insulation plate and the cavity plate.

[0008] The upper mold includes an upper fixed plate, an upper heat insulation plate, and a core plate. The core plate is embedded in the upper heat insulation plate, and the upper heat insulation plate is mounted on the upper fixed plate. A second heating wire is installed in the upper heat insulation plate, and the second heating wire is located between the upper heat insulation plate and the core plate.

[0009] Furthermore, the feeding mechanism includes a support, a propulsion cylinder, and a cylindrical linear guide rail. The propulsion cylinder and the cylindrical linear guide rail are respectively mounted on the support, and the output end of the propulsion cylinder is connected to the slider of the cylindrical linear guide rail. A lifting cylinder is mounted on the slider of the cylindrical linear guide rail, and a rotary cylinder is mounted on the output end of the lifting cylinder. A swing arm is mounted on the turntable of the rotary cylinder, and a vacuum suction cup is mounted on the swing arm.

[0010] Furthermore, the lower mold is inlaid with guide pillars around its perimeter, and the upper mold is inlaid with guide sleeves around its perimeter, and the upper mold is joined with the lower mold through the guide pillars and guide sleeves.

[0011] Furthermore, the electrical terminal of the first heating wire extends outward from the lower heat insulation plate and is connected to a first electrical connector.

[0012] Furthermore, both the lower heat insulation plate and the cavity plate are provided with lower cooling channels, and the lower cooling channels of the two are interconnected.

[0013] Furthermore, the electrical terminal of the second heating wire extends outward from the upper heat insulation plate and is connected to a second electrical connector.

[0014] Furthermore, both the upper heat insulation plate and the core plate are provided with upper cooling channels, and the upper cooling channels of the two are interconnected.

[0015] Compared with the prior art, this utility model provides a mold for molding PU material, which has the following beneficial effects:

[0016] The mold for molding PU material uses a vacuum suction cup to grab the molding sheet from the material area, a push cylinder to transfer the molding sheet to the mold, a lifting cylinder to lift the molding sheet above the lower mold, and a rotary cylinder to transfer the molding sheet above the cavity plate. At this time, the vacuum suction cup releases the sheet. All the operations are completed automatically by the machine without manual assistance, which effectively improves the feeding efficiency and reduces the intensity of manual labor. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of this utility model;

[0018] Figure 2 is a front view of this utility model;

[0019] Figure 3 is a partial cross-sectional view of this utility model.

[0020] In the diagram: 1. Lower mold; 11. Lower fixed plate; 12. Lower heat insulation plate; 13. Cavity plate; 14. First heating wire; 15. First electrical connector; 16. Lower cooling channel; 2. Upper mold; 21. Upper fixed plate; 22. Upper heat insulation plate; 23. Core plate; 24. Second heating wire; 25. Second electrical connector; 26. Upper cooling channel; 3. Feeding mechanism; 31. Support; 32. Push cylinder; 33. Cylindrical linear guide; 34. Lifting cylinder; 35. Rotary cylinder; 36. Swing arm; 37. Vacuum suction cup; 4. Guide post; 5. Guide sleeve. Detailed Implementation

[0021] 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.

[0022] Please refer to Figures 1-3. This utility model discloses a mold for molding PU material, including a lower mold 1, an upper mold 2, and a feeding mechanism 3. The upper mold 2 is located on the lower mold 1, and the feeding mechanism 3 is located on one side of the lower mold 1. The vacuum suction cup 37 grabs the molding sheet from the material area, and the pushing cylinder 32 transfers the molding sheet to the mold. The lifting cylinder 34 lifts the molding sheet above the lower mold 1, and the rotating cylinder 35 transfers the molding sheet above the cavity plate 13. At this time, the vacuum suction cup 37 releases the sheet. All the operations are completed automatically by the machine without manual assistance, which effectively improves the feeding efficiency and reduces the labor intensity of manual labor.

[0023] The lower mold 1 includes a lower fixing plate 11, a lower heat insulation plate 12, and a cavity plate 13. The cavity plate 13 is embedded in the lower heat insulation plate 12, and the lower heat insulation plate 12 is installed on the lower fixing plate 11. A first heating wire 14 is installed in the lower heat insulation plate 12, and the first heating wire 14 is located between the lower heat insulation plate 12 and the cavity plate 13.

[0024] The upper mold 2 includes an upper fixing plate 21, an upper heat insulation plate 22, and a core plate 23. The core plate 23 is embedded in the upper heat insulation plate 22, and the upper heat insulation plate 22 is installed on the upper fixing plate 21. A second heating wire 24 is installed in the upper heat insulation plate 22, and the second heating wire 24 is located between the upper heat insulation plate 22 and the core plate 23.

[0025] The feeding mechanism 3 includes a support 31, a propulsion cylinder 32, and a cylindrical linear guide rail 33. The propulsion cylinder 32 and the cylindrical linear guide rail 33 are respectively mounted on the support 31, and the output end of the propulsion cylinder 32 is connected to the slider of the cylindrical linear guide rail 33. A lifting cylinder 34 is mounted on the slider of the cylindrical linear guide rail 33, and a rotary cylinder 35 is mounted on the output end of the lifting cylinder 34. A swing arm 36 is mounted on the turntable of the rotary cylinder 35, and a vacuum suction cup 37 is mounted on the swing arm 36.

[0026] Specifically, the lower mold 1 is inlaid with guide pillars 4 around its perimeter, and the upper mold 2 is inlaid with guide sleeves 5 around its perimeter. The upper mold 2 is closed with the lower mold 1 through the guide pillars 4 and the guide sleeves 5.

[0027] In this implementation scheme, the guide pillar 4 and guide sleeve 5 serve to guide, position, and bear certain lateral pressure during the mold opening and closing process, thereby guiding the movement path of the mold and ensuring the accuracy and stability of the mold during operation.

[0028] Specifically, the electrical terminal of the first heating wire 14 extends outward from the lower heat insulation plate 12, and a first electrical connector 15 is connected to it.

[0029] In this embodiment, the first heating wire 14 is a component that efficiently converts electrical energy into heat energy through the resistance effect. It is used to provide heat to bring the mold to the required temperature, ensuring that the PU material can melt during the molding process and guaranteeing the molding quality.

[0030] Specifically, both the lower heat insulation plate 12 and the cavity plate 13 are provided with lower cooling channels 16, and the lower cooling channels 16 of the two are interconnected.

[0031] In this embodiment, the lower cooling channel 16 is used to help cool the mold and product during demolding, thereby improving product molding efficiency and quality. Specifically, the lower cooling channel 16 carries away the heat in the mold and reduces the temperature of the mold and product by introducing cooling air, which is continuously circulated.

[0032] Specifically, the electrical terminal of the second heating wire 24 extends outward from the upper heat insulation plate 22, and a second electrical connector 25 is connected thereto.

[0033] In this embodiment, the second heating wire 24 is used to provide heat to bring the mold to the required temperature, ensuring that the PU material can melt during the molding process and guaranteeing the molding quality.

[0034] Specifically, both the upper heat insulation plate 22 and the core plate 23 are provided with upper cooling channels 26, and the upper cooling channels 26 of the two are interconnected.

[0035] In this embodiment, during demolding, the upper cooling channel 26 helps cool the mold and the product, thereby improving product molding efficiency and quality.

[0036] During use, after the mold opens (i.e., the upper mold 2 rises and separates from the lower mold 1 by a certain distance), the vacuum suction cup 37 grabs the molding sheet from the material area. The pushing cylinder 32 transfers the molding sheet to the mold, the lifting cylinder 34 lifts the molding sheet above the lower mold 1, and the rotating cylinder 35 transfers the molding sheet above the cavity plate 13. At this time, the vacuum suction cup 37 releases the sheet, and the sheet falls into the cavity plate 13. All these operations are completed automatically by the machine without manual assistance, which effectively improves the feeding efficiency and reduces the intensity of manual labor. When the upper mold 2 descends and closes with the lower mold 1, the cavity plate 13 and the core plate 23 are heated by heating wires to ensure that the PU material can melt and form during the molding process. After the product is formed, the heating wires are de-energized and heating stops. Cooling air is introduced into the lower cooling channel 16 and the upper cooling channel 26 to remove the heat from the mold and reduce the temperature of the mold and the product. Then the mold is opened and the product is taken out.

[0037] In summary, the mold for molding PU material uses a vacuum suction cup 37 to grab the molding sheet from the material area, a push cylinder 32 to transfer the molding sheet to the mold, a lifting cylinder 34 to lift the molding sheet above the lower mold 1, and a rotary cylinder 35 to transfer the molding sheet above the cavity plate 13. At this time, the vacuum suction cup 37 releases the sheet. All these operations are completed automatically by the machine without manual assistance, which effectively improves the feeding efficiency and reduces the intensity of manual labor.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold for molding PU material, comprising a lower mold (1), an upper mold (2), and a feeding mechanism (3), characterized in that: The upper mold (2) is located on the lower mold (1), and the feeding mechanism (3) is located on one side of the lower mold (1). The lower mold (1) includes a lower fixing plate (11), a lower heat insulation plate (12), and a cavity plate (13). The cavity plate (13) is embedded in the lower heat insulation plate (12), and the lower heat insulation plate (12) is installed on the lower fixing plate (11). A first heating wire (14) is installed in the lower heat insulation plate (12), and the first heating wire (14) is located on the lower mold (11). Between the heat insulation plate (12) and the cavity plate (13); the upper mold (2) includes an upper fixing plate (21), an upper heat insulation plate (22) and a core plate (23), the core plate (23) is embedded in the upper heat insulation plate (22) and the upper heat insulation plate (22) is installed on the upper fixing plate (21), a second heating wire (24) is installed in the upper heat insulation plate (22) and the second heating wire (24) is located between the upper heat insulation plate (22) and the core plate (23).

2. The mold for molding PU material according to claim 1, characterized in that: The feeding mechanism (3) includes a support (31), a propulsion cylinder (32), and a cylindrical linear guide (33). The propulsion cylinder (32) and the cylindrical linear guide (33) are respectively mounted on the support (31), and the output end of the propulsion cylinder (32) is connected to the slider of the cylindrical linear guide (33). A lifting cylinder (34) is mounted on the slider of the cylindrical linear guide (33), and a rotary cylinder (35) is mounted on the output end of the lifting cylinder (34). A swing arm (36) is mounted on the turntable of the rotary cylinder (35), and a vacuum suction cup (37) is mounted on the swing arm (36).

3. The mold for molding PU material according to claim 1, characterized in that: The lower mold (1) is inlaid with guide pillars (4) around its perimeter, and the upper mold (2) is inlaid with guide sleeves (5) around its perimeter. The upper mold (2) is closed with the lower mold (1) through the guide pillars (4) and the guide sleeves (5).

4. The mold for molding PU material according to claim 1, characterized in that: The electrical terminal of the first heating wire (14) extends outward from the lower heat insulation plate (12) and is connected to the first electrical connector (15).

5. The mold for molding PU material according to claim 1, characterized in that: Both the lower heat insulation plate (12) and the cavity plate (13) are provided with a lower cooling channel (16), and the lower cooling channels (16) of the two are interconnected.

6. The mold for molding PU material according to claim 1, characterized in that: The electrical terminal of the second heating wire (24) extends outward from the upper heat insulation plate (22), and a second electrical connector (25) is connected thereto.

7. The mold for molding PU material according to claim 1, characterized in that: Both the upper heat insulation plate (22) and the core plate (23) are provided with upper cooling channels (26), and the upper cooling channels (26) of the two are interconnected.

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