Hot press forming die

Abstract

The utility model provides a hot press forming die which comprises a workbench, a lower die, a hydraulic machine, an upper die and a pressure stabilizing piece, and the bottom of the pressure stabilizing piece is in a sawtooth shape. The die is provided with the pressure stabilizing piece, when the upper die moves downwards, the pressure stabilizing piece firstly makes contact with a preheated material and extrudes the preheated material, and therefore the situation that the preheated material moves in the die assembly process of the upper die and the lower die is avoided; therefore, the mode that the edge of the preheated material needs to be grasped by a hand to prevent the preheated material from moving is eliminated through the pressure stabilizing piece, and therefore the danger coefficient of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a hot pressing molding mold. Background Art

[0002] At present, in the process of using hot pressing molds in the production of automobile underbody guards, preheated material with a size larger than the mold cavity size is generally placed on the lower mold, and then the hydraulic press is started to move the upper mold downward and close the mold with the lower mold to complete the hot pressing of the automobile underbody guard. During the mold closing process, the preheated material may move and cause the hot pressing to fail. Therefore, it is necessary to manually grasp the edge of the preheated material to prevent the preheated material from moving, and release the hand only after the mold closing is completed; however, the method of manually grasping the preheated material makes the staff closer to the mold, which increases the risk factor for the staff. Utility Model Content

[0003] The purpose of this utility model is to design a hot pressing mold to solve the problems raised by the background art. To achieve the above-mentioned purpose, the utility model provides the following technical solution: comprising a lower mold fixed to a workbench and an upper mold fixed to the movable end of a hydraulic press. A plurality of pressure stabilizing plates are fixed to the lower portions of the four side walls of the upper mold. The bottoms of the pressure stabilizing plates are serrated, and the plane on which the bottom ends of the pressure stabilizing plates lie is lower than the lowest section of the cavity of the upper mold.

[0004] Furthermore, four voltage stabilizing plates are respectively provided on the front and rear side walls of the upper mold, and the voltage stabilizing plates on the front and rear side walls are symmetrically distributed. One voltage stabilizing plate is respectively provided on the left and right side walls of the upper mold, and the voltage stabilizing plates on the left and right side walls are symmetrically distributed.

[0005] Furthermore, a vertical through slot is provided on the voltage stabilizing plate, and a threaded hole aligned with the through slot is provided on the side wall of the upper mold. The voltage stabilizing plate is fixed to the side wall of the upper mold by a bolt threadedly connected to the threaded hole.

[0006] Furthermore, cooling pipes are wound around the backs of the mold cavity of the upper mold and the mold cavity of the lower mold, and the cooling pipes are in contact with the backs of the mold cavity of the upper mold and the mold cavity of the lower mold.

[0007] Furthermore, the cavity of the upper mold and the cavity of the lower mold are provided with profiling cavities of no less than two parts.

[0008] Furthermore, the upper mold and the lower mold are both made of cast aluminum, and a plurality of cross-distributed ribs are provided on the upper mold and the lower mold.

[0009] Furthermore, the lower die is provided with a forklift hole, and an inverted U-shaped plate is fixed to the forklift hole.

[0010] Furthermore, a guide column is fixed on each of the four corners of the upper die, and a guide sleeve is provided on each of the four corners of the lower die to fit with the guide column in a clearance.

[0011] Furthermore, a buffer surface is provided on the lower die, and the bottom surface of the top flange of the guide sleeve coincides with the buffer surface. A buffer gasket is placed on the buffer surface, and the buffer gasket is sleeved on the outer circle of the flange.

[0012] Furthermore, the lower mold is provided with a plurality of hooks, and the buffer washers are hung on the hooks.

[0013] Furthermore, a plurality of limit plates are fixedly connected to the upper die, the limit plates are provided with vertically arranged limit grooves, the lower die is provided with limit holes, and the limit bolts are threadedly connected with the limit holes to fix the limit plates to the lower die.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model is provided with a pressure stabilizing sheet. When the upper mold moves downward, the pressure stabilizing sheet will first contact the preheated material and squeeze the preheated material, thereby preventing the preheated material from moving during the mold closing process of the upper mold and the lower mold; therefore, the utility model eliminates the need for people to manually grasp the edge of the preheated material to prevent the preheated material from moving through the pressure stabilizing sheet, thereby reducing the risk factor for workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 paying any creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Among them: 1. Upper die; 2. Buffer washer; 3. Hook; 4. Limit plate; 5. Limit bolt; 6. Bolt; 7. Through slot; 8. Inverted U-shaped plate; 9. Forklift hole; 10. Lower die; 11. Limit slot; 12. Workbench; 13. Voltage stabilizer; 14. Rib; 15. Cooling pipe. DETAILED DESCRIPTION

[0019] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0020] Example: Please refer to Figure 1 A hot pressing mold comprises a lower mold 10 fixed on a workbench 12 and an upper mold 1 fixed to the movable end of a hydraulic press. A plurality of stabilizing plates 13 are fixed to the lower parts of the four side walls of the upper mold 1. The bottom of the stabilizing plates 13 is serrated, and the plane where the bottom ends of the stabilizing plates 13 are located is lower than the lowest section of the cavity of the upper mold 1. When the upper mold 1 moves downward, the stabilizing plates 13 will first contact the preheated material, and the upper mold 1 continues to move downward. The serrated ends of the stabilizing plates 13 will squeeze the preheated material, thereby preventing the preheated material from moving during the clamping process of the upper mold 1 and the lower mold 10. The stability of the preheated material is further ensured. Therefore, the utility model eliminates the need for people to grasp the edge of the preheated material to prevent the preheated material from moving through the voltage stabilizing plate 13, thereby reducing the risk factor for the staff; wherein, four voltage stabilizing plates 13 are respectively provided on the front and rear side walls of the upper mold 1, and the voltage stabilizing plates 13 on the front and rear side walls are symmetrically distributed, and one voltage stabilizing plate 13 is respectively provided on the left and right side walls of the upper mold 1, and the voltage stabilizing plates 13 on the left and right side walls are symmetrically distributed, so that the multiple voltage stabilizing plates 13 evenly squeeze the preheated material, further preventing the preheated material from moving.

[0021] In this embodiment, a vertical through slot 7 is provided on the voltage stabilizing plate 13, and a threaded hole aligned with the through slot 7 is provided on the side wall of the upper mold. The bolt 6 is threadedly connected with the threaded hole to fix the voltage stabilizing plate 13 to the side wall of the upper mold 1, thereby facilitating the adjustment of the depth of the voltage stabilizing plate 13 and improving the flexibility of the mold; and the back of the cavity of the upper mold 1 and the cavity of the lower mold 10 are both coiled with a cooling pipe 15, and the cooling pipe 15 is in contact with the back of the cavity of the upper mold 1 and the cavity of the lower mold 10, so that the temperature inside the cavity is uniformly reduced; the upper mold 1 The mold cavity and the lower mold 10 are provided with a profiling cavity of no less than two parts, which realizes the output of multiple workpieces with one mold, saves the number of molds and reduces costs; the upper mold 1 and the lower mold 10 are both made of cast aluminum, and are provided with a number of cross-distributed ribs 14 on the upper mold 1 and the lower mold 10, which reduces the weight of the mold and reduces costs; the lower mold 10 is also provided with a forklift hole 9 to facilitate the transportation of the lower mold 10 by a forklift. The forklift hole 9 is fixed with an inverted U-shaped plate 8, so that the lower mold 10 can be moved by the forklift. Stable force; a guide column is fixed on each of the four corners of the upper mold 1, and a guide sleeve is provided on each of the four corners of the lower mold 10 to match the gap with the guide column, thereby ensuring the accurate clamping of the upper mold 1 and the lower mold 10; in addition, a buffer surface is provided on the lower mold 10, and the bottom surface of the top flange of the guide sleeve coincides with the buffer surface. A buffer washer 2 is placed on the buffer surface, and the buffer washer 2 is sleeved on the outer circle of the flange, thereby eliminating the rigid collision between the upper mold 1 and the lower mold 10 and improving the service life of the mold; a plurality of hooks 3 are provided on the lower mold 10, and the buffer washers 2 are hung on The hook 3 is convenient for placing the buffer gasket 2; and a number of limit plates 4 are fixed to the upper mold 1, and the limit plates 4 are provided with vertically arranged limit grooves 11, and the lower mold 10 is provided with limit holes. The limit bolts 5 are threadedly connected with the limit holes to fix the limit plates 4 to the lower mold 10. After the lower mold 10 and the upper mold 1 are closed, the limit bolts 5 will pass through the limit grooves 11 and be threadedly connected with the limit holes, thereby locking the upper mold 1 and the lower mold 10 together after production, which is convenient for demolding; and during the production process, the limit bolts 5 are in a removed state.

[0022] How it works

[0023] When hot pressing starts, the preheated material is first placed on the cavity of the lower mold 10, and then the upper mold 1 moves downward, the voltage stabilizing plate 13 first contacts the preheated material, and the upper mold 1 continues to move downward, and the serrated end of the voltage stabilizing plate 13 will squeeze the preheated material until the upper mold 1 and the lower mold 10 are completely closed; therefore, the present invention prevents the preheated material from moving during the closing process of the upper mold 1 and the lower mold 10 through the voltage stabilizing plate 13, eliminates the need for people to manually grasp the edge of the preheated material to prevent the preheated material from moving, and reduces the risk factor for workers.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "upper," "lower," "left," "right," "front," "rear," and similar expressions used herein are for illustrative purposes only.

[0025] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A hot pressing mold, comprising a lower mold (10) fixed on a workbench (12) and an upper mold (1) fixed on a movable end of a hydraulic press, characterized in that: A plurality of voltage stabilizing plates (13) are fixedly connected to the lower parts of the four side walls of the upper mold (1), the bottoms of the voltage stabilizing plates (13) are sawtooth-shaped, and the plane where the bottom ends of the voltage stabilizing plates (13) are located is lower than the lowest section of the cavity of the upper mold (1).

2. The hot pressing mold according to claim 1, characterized in that: Four voltage-stabilizing plates (13) are respectively provided on the front and rear side walls of the upper mold (1), and the voltage-stabilizing plates (13) on the front and rear side walls are symmetrically distributed. One voltage-stabilizing plate (13) is respectively provided on the left and right side walls of the upper mold (1), and the voltage-stabilizing plates (13) on the left and right side walls are symmetrically distributed.

3. The hot pressing mold according to claim 1, characterized in that: The voltage stabilizing plate (13) is provided with a vertical through slot (7), and the side wall of the upper mold is provided with a threaded hole aligned with the through slot (7). The bolt (6) is threadedly connected with the threaded hole to fix the voltage stabilizing plate (13) to the side wall of the upper mold (1).

4. The hot pressing mold according to claim 1, characterized in that: The backs of the mold cavity of the upper mold (1) and the mold cavity of the lower mold (10) are both coiled with cooling pipes (15), and the cooling pipes (15) are in contact with the backs of the mold cavity of the upper mold (1) and the mold cavity of the lower mold (10).

5. The hot pressing mold according to claim 1, characterized in that: The upper die (1) and the lower die (10) are both made of cast aluminum, and a plurality of cross-distributed ribs (14) are provided on the upper die (1) and the lower die (10).

6. The hot pressing mold according to claim 1, characterized in that: The lower die (10) is also provided with a forklift hole (9), and an inverted U-shaped plate (8) is fixedly connected to the forklift hole (9).

7. The hot pressing mold according to claim 1, characterized in that: A guide column is fixed on each of the four corners of the upper die (1), and a guide sleeve is provided on each of the four corners of the lower die (10) to be clearance-matched with the guide column.

8. The hot pressing mold according to claim 7, characterized in that: The lower die (10) is provided with a buffer surface, the bottom surface of the top flange of the guide sleeve coincides with the buffer surface, a buffer washer (2) is placed on the buffer surface, and the buffer washer (2) is sleeved on the outer circle of the flange.

9. The hot pressing mold according to claim 8, characterized in that: The lower mold (10) is provided with a plurality of hooks (3), and the buffer washers (2) are hung on the hooks (3).

10. The hot pressing mold according to claim 1, characterized in that: A plurality of limiting plates (4) are fixedly connected to the upper die (1), the limiting plates (4) are provided with vertically arranged limiting grooves (11), the lower die (10) is provided with limiting holes, and limiting bolts (5) are threadedly connected to the limiting holes to fix the limiting plates (4) and the lower die (10).

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