Lifting structure of a multi-point forming mold

Abstract

The utility model relates to mould technical field discloses a kind of lifting structure of multi-point forming mould, including mounting plate and bearing protection sleeve, the lower end sleeve of bearing protection sleeve is connected with mounting seat, mounting seat is connected on mounting plate, first bearing, second bearing and third bearing are installed in bearing protection sleeve, rotatable screw rod is provided in bearing protection sleeve, the lower end of screw rod is provided with connecting section, connecting section is arranged in first bearing, second bearing and third bearing, the upper end of bearing protection sleeve is provided with top cover, and limiting platform that top pressure is set on the upper end of top cover is set on screw rod;The lifting structure prevents stamping to first bearing, second bearing and third bearing and causes damage, improves service life, and under the action of first bearing, second bearing and third bearing, three-layer bearing structure is formed, so that screw rod is more stable in bearing protection sleeve, can guarantee better pressure resistance in long-term stamping work, so that the whole structure is more compact.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and more specifically, to a lifting structure for a multi-point forming mold. Background Technology

[0002] Multi-point forming molds are a type of mold that uses multiple independent lifting structures to raise and lower the pressure head, allowing the pressure head to form different curved surfaces at different heights. For example, Chinese patent document CN120532946A discloses a multi-point forming mold. In this structure, during the stamping process, the pressure of the screw is transmitted to the thrust bearing and then presses against the combined clamp. Although it has a certain degree of elasticity under the action of the elastic element, the bearing is prone to damage under long-term stamping operation, leading to instability in the entire structure. This causes deviations in the position of the pressure head, resulting in changes in the curvature of the stamping. Utility Model Content

[0003] In order to overcome the defects of the existing technology, this utility model provides a lifting structure for a multi-point forming mold to solve the above and related problems.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a lifting structure for a multi-point forming mold, including a mounting plate and a bearing protective sleeve. The lower end of the bearing protective sleeve is fitted with a mounting base, which is connected to the mounting plate. A first bearing, a second bearing, and a third bearing are installed inside the bearing protective sleeve. A rotatable lead screw is provided inside the bearing protective sleeve. A connecting section is provided at the lower end of the lead screw, which passes through the first bearing, the second bearing, and the third bearing. A top cover is provided at the upper end of the bearing protective sleeve, and a limiting platform that presses against the upper end of the top cover is provided on the lead screw.

[0005] In the lifting structure of the multi-point forming mold described above, the first bearing, the second bearing, and the third bearing are arranged sequentially from top to bottom. A spacer is provided between the first bearing and the second bearing. The spacer is sleeved on the connecting section. The lower end of the second bearing is provided with a boss located on the inner wall of the bearing protective sleeve, so that the first bearing, the spacer, and the second bearing are fixed between the boss and the top cover.

[0006] In the lifting structure of the multi-point forming mold described above, the lower end of the connecting section extends to the outside of the bearing protective sleeve, the upper end of the third bearing presses against the lower end face of the boss, a first stop is provided between the second bearing and the third bearing, and a second stop is provided at the lower end of the third bearing. Both the first stop and the second stop can be sleeved on the connecting section, and the first stop presses against the inner ring of the second bearing, while the second stop presses against the inner ring of the third bearing.

[0007] In the lifting structure of the multi-point forming mold described above, both the first stop part and the second stop part include stop washers, and nuts are provided at the upper and lower ends of the stop washers, with the nuts threadedly connected to the connecting section.

[0008] In the lifting structure of the multi-point forming mold described above, the lower end of the connecting section is connected to a drive motor, and the drive motor is fixed to the lower end of the mounting plate.

[0009] In the lifting structure of the multi-point forming mold described above, the lower end of the connecting section is connected to the motor shaft of the drive motor via a coupling.

[0010] In the lifting structure of the multi-point forming mold described above, a column is sleeved on the threaded section of the lead screw, the column is threadedly connected to the lead screw, and a pressure head is installed at the upper end of the column.

[0011] The beneficial effects of this utility model are that the lead screw is pressed against the top cover by the limiting platform. During the stamping process, the pressure is transmitted to the entire bearing protective sleeve through the limiting platform, preventing damage to the first, second, and third bearings caused by stamping, thus improving service life. Moreover, under the action of the first, second, and third bearings, a three-layer bearing structure is formed, making the lead screw more stable inside the bearing protective sleeve. It can ensure better pressure resistance during long-term stamping work, making the entire structure more compact. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the lifting structure of a multi-point forming mold.

[0013] Figure 2 This is a schematic diagram of the internal structure of the lifting structure in Example 1.

[0014] Figure 3 This is a partial structural diagram of the lifting structure in Embodiment 1.

[0015] Figure 4 This is a schematic diagram of the internal structure of the lifting structure in Embodiment 2.

[0016] Figure 5 This is a partial structural diagram of the lifting structure in Embodiment 2.

[0017] Figure 6 This is a three-dimensional structural diagram of the lifting structure in Example 3.

[0018] In the diagram: 1. Mounting plate; 2. Mounting seat; 3. Bearing protective sleeve; 4. Column; 5. Pressure head; 6. Drive motor; 7. Lead screw; 8. Connecting section; 9. First bearing; 10. Spacer; 11. Second bearing; 12. Third bearing; 13. Second stop part; 14. Stop washer; 15. Nut; 16. Boss; 17. Top cover; 18. Limiting platform; 19. Coupling. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] Example 1 Combination Figures 1 to 3 The lifting structure of a multi-point forming mold shown includes a mounting plate 1 and a bearing protective sleeve 3. A mounting base 2 is sleeved on the lower end of the bearing protective sleeve 3 and connected to the mounting plate 1. A first bearing 9, a second bearing 11, and a third bearing 12 are installed inside the bearing protective sleeve 3. A rotatable lead screw 7 is provided inside the bearing protective sleeve 3. A connecting section 8 is provided at the lower end of the lead screw 7, passing through the first bearing 9, the second bearing 11, and the third bearing 12. A top cover 17 is provided at the upper end of the bearing protective sleeve 3, and a pressure plate is provided on the lead screw 7 that presses against the top cover 17. The limiting platform 18 at the end; in this embodiment, the lead screw 7 is pressed against the top cover 17 by the limiting platform 18. During the stamping process, the pressure is transmitted to the entire bearing protective sleeve 3 through the limiting platform 18, preventing damage to the first bearing 9, the second bearing 11 and the third bearing 12 caused by stamping, thus improving the service life. Moreover, under the action of the first bearing 9, the second bearing 11 and the third bearing 12, a three-layer bearing structure is formed, making the lead screw 7 more stable in the bearing protective sleeve 3. It can ensure better pressure resistance during long-term stamping work, making the whole structure more compact.

[0021] In this embodiment, the first bearing 9, the second bearing 11, and the third bearing 12 are arranged sequentially from top to bottom. A spacer 10 is provided between the first bearing 9 and the second bearing 11. The spacer 10 is fitted onto the connecting section 8. The lower end of the second bearing 11 is provided with a boss 16 located on the inner wall of the bearing protective sleeve 3, so that the first bearing 9, the spacer 10, and the second bearing 11 are fixed between the boss 16 and the top cover 17. This makes the structure of the first bearing 9, the spacer 10, and the second bearing 11 between the boss 16 and the top cover 17 more compact, prevents the first bearing 9 and the second bearing 11 from moving, and improves the stability and pressure resistance of the lead screw 7.

[0022] In this embodiment, the lower end of the connecting section 8 extends to the outside of the bearing protective sleeve 3. The upper end of the third bearing 12 presses against the lower end face of the boss 16. A first stop is provided between the second bearing 11 and the third bearing 12. A second stop 13 is provided at the lower end of the third bearing 12. Both the first stop and the second stop 13 can be sleeved on the connecting section 8. The first stop presses against the inner ring of the second bearing 11, and the second stop 13 presses against the inner ring of the third bearing 12. The first stop and the second stop 13 further improve the stability of the lead screw 7 in the bearing protective sleeve 3, preventing the lead screw 7 from loosening and causing positional deviation during the stamping process.

[0023] Specifically, both the first stop and the second stop 13 include a stop washer 14, and the upper and lower ends of the stop washer 14 are provided with nuts 15, which are threaded onto the connecting section 8. The stop washer 14 is fixed to the connecting section 8 by the double nuts, which better ensures that the bearing does not loosen.

[0024] In this embodiment, the lower end of the connecting section 8 is connected to the motor shaft of the drive motor 6 via a keyway or bolts. The drive motor 6 is fixed to the lower end of the mounting plate 1. The drive motor 6 drives the lead screw 7 to rotate. A column 4 is sleeved on the threaded section of the lead screw 7. The column 4 is a cube-shaped column, or it can be a column 4 of other polygonal shapes. The column 4 is threadedly connected to the lead screw 7. A pressure head 5 is installed on the upper end of the column 4. When the lead screw 7 rotates, the column 4 rises and falls on the lead screw 7, thereby adjusting the height of the pressure head 5.

[0025] Example 2 Combination Figure 1 , Figure 4 and Figure 5 As shown, the difference between this embodiment 2 and embodiment 1 is that the lower end of the connecting section 8 is connected to the motor shaft of the drive motor 6 through the coupling 19; maintenance is more convenient.

[0026] Example 3 like Figure 6 As shown, the difference between this third embodiment and the first embodiment is that the column 4 is a cylindrical column 4, the column 4 is threadedly connected to the lead screw 7, and the upper end of the column 4 is equipped with a pressure head 5.

[0027] In some other embodiments, the outer wall of the column 4 can also be polygonal, such as a quadrilateral column, and the outer wall of the bearing protective sleeve 3 can be polygonal, such as a quadrilateral bushing protective sleeve 3. It can even be a combination of a polygonal column 4 and a cylindrical bearing protective sleeve 3.

[0028] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A lifting structure for a multi-point forming mold, comprising a mounting plate (1) and a bearing protective sleeve (3), characterized in that, The lower end of the bearing protective sleeve (3) is fitted with a mounting base (2), which is connected to the mounting plate (1). The bearing protective sleeve (3) is fitted with a first bearing (9), a second bearing (11), and a third bearing (12). The bearing protective sleeve (3) is fitted with a rotatable lead screw (7), which is fitted with a connecting section (8) at its lower end. The connecting section (8) passes through the first bearing (9), the second bearing (11), and the third bearing (12). The upper end of the bearing protective sleeve (3) is fitted with a top cover (17), and the lead screw (7) is fitted with a limiting platform (18) that presses against the top end of the top cover (17).

2. The lifting structure of a multi-point forming mold according to claim 1, characterized in that, The first bearing (9), the second bearing (11) and the third bearing (12) are arranged sequentially from top to bottom. A spacer (10) is provided between the first bearing (9) and the second bearing (11). The spacer (10) is sleeved on the connecting section (8). The lower end of the second bearing (11) is provided with a boss (16) located on the inner wall of the bearing protective sleeve (3), so that the first bearing (9), the spacer (10) and the second bearing (11) are fixed between the boss (16) and the top cover (17).

3. The lifting structure of a multi-point forming mold according to claim 2, characterized in that, The lower end of the connecting section (8) extends to the outside of the bearing protective sleeve (3), the upper end of the third bearing (12) presses against the lower end face of the boss (16), a first stop is provided between the second bearing (11) and the third bearing (12), and a second stop (13) is provided at the lower end of the third bearing (12). Both the first stop and the second stop (13) can be fitted onto the connecting section (8), and the first stop presses against the inner ring of the second bearing (11), and the second stop (13) presses against the inner ring of the third bearing (12).

4. The lifting structure of a multi-point forming mold according to claim 3, characterized in that, Both the first stop and the second stop (13) include a stop washer (14), and the upper and lower ends of the stop washer (14) are provided with nuts (15), which are threaded onto the connecting section (8).

5. The lifting structure of a multi-point forming mold according to claim 4, characterized in that, The lower end of the connecting section (8) is connected to a drive motor (6), which is fixed to the lower end of the mounting plate (1).

6. The lifting structure of a multi-point forming mold according to claim 5, characterized in that, The lower end of the connecting section (8) is connected to the motor shaft of the drive motor (6) via a coupling (19).

7. The lifting structure of a multi-point forming mold according to claim 5 or 6, characterized in that, A column (4) is sleeved on the threaded section of the lead screw (7), the column (4) is threadedly connected to the lead screw (7), and a pressure head (5) is installed on the upper end of the column (4).

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