Vacuum forming die of pressing machine

Abstract

The utility model discloses a vacuum forming die of a press, which relates to the technical field of vacuum pressure forming equipment and is characterized by further comprising a die forming box body and a die base, the die base is fixed on a press workbench, and the lower end of the die forming box body capable of sliding up and down is hermetically sleeved on the die base. And a product pressing head is inserted into the upper end of the mold forming box body and is arranged at the lower end of a lower pressing arm of the pressing machine. When the device is used for carrying out compaction forming operation, product materials are put into the mold forming cavity, and the lower pressing arm of the pressing machine drives the product pressing head to move downwards and be inserted into the mold forming cavity; and meanwhile, vacuumizing operation is carried out. Along with the downward movement of the product pressing head, the product is gradually compacted; when the downward pressing resistance of the product pressing head is larger and larger, the mold forming box body can synchronously move downwards, the downward moving resistance of the product pressing head is reduced, the upper end and the lower end of the product are evenly stressed, the compactness of the manufactured product is higher, and the forming quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pressure forming equipment, in particular to a vacuum forming mould for a press. Background Art

[0002] When the material is subjected to vacuum vibration molding, the mold base is fixed on the workbench of the press, and the mold molding box with a molding cavity and open at both ends is fixed on the mold base. The lower pressing arm of the press drives the product pressure head to press into the mold molding box from top to bottom, and compacts and molds the material in the mold molding box. In order to improve the compaction tightness, the molding space is also vacuumed, such as the Chinese utility model patent "A Vacuum Sealing Device for Carbon Vibration Molding Mold" with publication number CN217047616U, which discloses a molding mold with a vacuum structure and a molding cavity fixedly arranged in the mold base. The mold can ensure the vacuum degree during the compaction process through the improved sealing structure, but because the molding cavity is opened in the mold base, when the product pressure head is pressed into the molding cavity from top to bottom, it will still be subject to greater resistance from the mold, and the product is subjected to force on one side, resulting in insufficient compaction, thereby affecting the product molding quality. Utility Model Content

[0003] The purpose of the utility model is to provide a vacuum forming mold for a press in order to solve the above-mentioned problems.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum forming mold of a press, including a product pressing head, a mold forming box and a mold base. The mold base is fixed on a press workbench, and a lower end of the mold forming box that can slide up and down is sealed on the mold base. The product pressing head is inserted into the upper end of the mold forming box, and the product pressing head is installed on the lower pressing arm of the press.

[0005] As a further solution of the utility model: a sealing ring is sleeved on the outer periphery of the mold base, and the inner wall of the mold forming box and the mold base are sealed and slidably connected through the sealing ring.

[0006] As a further solution of the utility model: a guide block is arranged on the inner wall of the mold forming box, and a guide groove is opened on the outer peripheral wall of the mold base. The guide block is inserted into the guide groove and can be driven by the mold forming box to move up and down in the guide groove.

[0007] As a further solution of the utility model: the upper end of the mold forming box is in a trumpet shape that is larger at the top and smaller at the bottom.

[0008] As a further solution of the utility model: it also includes a vacuum cover body, which is slidably sealed and mounted on the lower pressing arm of the press, a sealing strip is arranged on the contact surface between the vacuum cover body and the mold forming cavity, and the lower end opening of the vacuum cover body matches the upper end opening of the mold forming cavity in shape and size; a vacuum tube is connected to the vacuum cover body, and the vacuum tube is connected to a vacuum pump.

[0009] As a further solution of the utility model: it also includes a mold guide lifting beam, which is fixed on the press frame, and a guide hole is opened on the mold guide lifting beam. The mold forming box is arranged in the guide hole and can slide up and down along the guide hole.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model innovatively enables the mold forming box to move up and down relative to the mold base on the basis of ensuring the sealing degree, so that the double-sided force is applied during the compaction process of the product, and the compaction degree is higher.

[0012] During compaction and molding, the product material is placed into the mold molding cavity, and the lower pressing arm of the press drives the product pressing head to move downward and insert it into the mold molding cavity; at the same time, vacuuming is performed. As the product pressing head moves downward, the product is gradually compacted; when the product pressing head encounters increasing resistance, the mold molding box can move downward synchronously, reducing the downward resistance of the product pressing head and making the upper and lower ends of the product evenly stressed, making the product more compact and improving the molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 For the utility model Figure 1 Enlarged view of position A in the middle.

[0015] In the figure: 1. Press lower arm; 2. Vacuum cover; 3. Press frame; 4. Product pressing head; 5. Mold forming box; 6. Mold guide lifting beam; 7. Press workbench; 8. Mold base; 9. Product; 10. Guide block; 11. Guide groove; 12. Sealing ring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figures 1-2 In an embodiment of the utility model, a press vacuum forming mold is installed on a press. The press includes a press frame 3, a press lower arm 1 and a press workbench 7. The press frame 3 includes at least two guide columns, which are fixed on the press workbench 7, and the press lower arm 1 is located above the press workbench 7. The device includes a product pressing head 4, a mold forming box 5 and a mold base 8, the mold base 8 is fixed on the press workbench 7, the lower end of the mold forming box 5 that can slide up and down is sealed on the mold base 8, the product pressing head 4 is inserted at the upper end of the mold forming box 5, and the product pressing head 4 is installed at the lower end of the press lower arm 1.

[0018] A sealing ring 12 is sleeved on the outer periphery of the mold base 8, and the inner wall of the mold molding box 5 and the mold base 8 are sealed and slidably connected through the sealing ring 12. The sealing ring 12 is made of a self-lubricating rubber material, which can further reduce the relative movement friction coefficient between the mold molding box 5 and the mold base 8, and plays a role in sealing the molding cavity to ensure the sealing requirements during the vacuum operation.

[0019] A guide block 10 is arranged on the inner wall of the mold forming box 5 , and a guide groove 11 is provided on the outer peripheral wall of the mold base 8 . The guide block 10 is inserted into the guide groove 11 and can be driven by the mold forming box 5 to move up and down in the guide groove 11 .

[0020] The upper end of the mold forming box 5 is in a trumpet shape that is larger at the top and smaller at the bottom.

[0021] It also includes a vacuum cover body 2, which is slidably and sealingly mounted on the lower pressing arm 1 of the press, a sealing strip is arranged on the contact surface between the vacuum cover body 2 and the mold forming cavity, and the lower end opening of the vacuum cover body 2 matches the upper end opening of the mold forming cavity in shape and size; a vacuum tube is connected to the vacuum cover body 2, and the vacuum tube is connected to a vacuum pump.

[0022] It also includes a mold guide lifting beam 6, which is fixed on the press frame 3. A guide hole is opened on the mold guide lifting beam 6, and the mold forming box 5 is arranged in the guide hole and can slide up and down along the guide hole.

[0023] When the device is in use, the material of the product 9 to be compacted is first placed from the upper end into the mold forming cavity, and then the press is started. The lower pressure arm 1 of the press drives the product pressure head 4 to move downward and insert it into the mold forming cavity; at the same time, the lower pressure arm 1 of the press synchronously drives the vacuum cover 2 to move downward, and the vacuum cover 2 is sealed and buckled at the upper open end of the mold forming box 5. At this time, the vacuum pump is started, and the molding cavity is vacuumed through the vacuum pipe.

[0024] As the product pressing head 4 moves downward, the product 9 is gradually compacted; when the downward pressure of the product pressing head 4 encounters increasing resistance, the mold forming box 5 can move downward synchronously, reducing the downward resistance of the product pressing head 4 and making the upper and lower ends of the product 9 evenly stressed, so that the compactness of the product 9 is higher and the molding quality is improved.

[0025] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vacuum forming die for a press, comprising a product pressing head (4), characterized in that: It also includes a mold forming box (5) and a mold base (8), wherein the mold base (8) is fixed on a press workbench (7), a lower end of the mold forming box (5) that can slide up and down is sealed and mounted on the mold base (8), a product pressing head (4) is inserted at the upper end of the mold forming box (5), and the product pressing head (4) is mounted on a lower pressing arm (1) of the press.

2. A press vacuum forming mold according to claim 1, characterized in that: A sealing ring (12) is sleeved on the outer periphery of the mold base (8), and the inner wall of the mold forming box (5) and the mold base (8) are sealed and slidably connected via the sealing ring (12).

3. A press vacuum forming mold according to claim 1, characterized in that: A guide block (10) is arranged on the inner wall of the mold forming box (5), and a guide groove (11) is provided on the outer peripheral wall of the mold base (8). The guide block (10) is inserted into the guide groove (11) and can be driven by the mold forming box (5) to move up and down in the guide groove (11).

4. A press vacuum forming mold according to claim 1, characterized in that: The upper end of the mold forming box (5) is in the shape of a trumpet with a larger upper portion and a smaller lower portion.

5. A press vacuum forming mold according to claim 1, characterized in that: It also comprises a vacuum cover (2), the vacuum cover (2) being slidably and sealingly mounted on the lower pressing arm (1) of the press, a sealing strip being arranged on the contact surface between the vacuum cover (2) and the mold forming cavity, and the shape and size of the lower opening of the vacuum cover (2) and the upper opening of the mold forming cavity being matched; the vacuum cover (2) is connected to a vacuum pump, and the vacuum pump is connected to the vacuum pump.

6. A press vacuum forming mold according to claim 1, characterized in that: It also includes a mold guide lifting beam (6), which is fixed on the press frame (3), and a guide hole is opened on the mold guide lifting beam (6). The mold forming box (5) is arranged in the guide hole and can slide up and down along the guide hole.

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