Pressure maintaining device for injection molding mold

Abstract

The utility model relates to the technical field of injection mold pressure maintaining, and discloses an injection molding mold pressure maintaining device which comprises a bottom plate and a connecting block, a replacing mechanism is arranged at the bottom of the connecting block, and the replacing mechanism comprises a clamping block, an abutting block, a pressing plate, a sleeving block and a first fixing bolt. The outer surface of the clamping block is movably connected with the interior of the connecting block, and the left side of the abutting block abuts against the right side of the clamping block. According to the pressure maintaining device for the injection molding mold, a first fixing bolt is taken out from the interiors of a clamping block and an abutting block, then a second fixing bolt is taken out from the interiors of an extending plate and a connecting block, and therefore no mutual acting force exists between the clamping block and the connecting block, and the problem of how to replace a pressing plate is effectively solved; and the effect of convenient replacement in practice can be achieved, meanwhile, the subsequent pressurization effect is improved, and the overall use effect in practice can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection mold pressure maintenance, and specifically relates to a pressure maintenance device for an injection molding mold. Background Technique

[0002] Injection molding is an important industrial production process. It manufactures the required plastic products by injecting molten plastic into a mold and cooling and solidifying it. In this process, the mold pressure maintenance device plays a crucial role in ensuring the uniform flow and cooling rate of the plastic in the mold, thereby preventing defects such as shrinkage and bubbles, and improving the surface quality and overall performance of the product.

[0003] According to an injection molding mold pressure maintenance device with the application number CN202022561461.X, this solution solves the problem of how to slightly adjust the internal structure of the mold according to the morphological changes of the injection liquid in each time period and keep the injection liquid in full contact with the inner wall of the injection mold.

[0004] However, the following problems still exist in the actual use process:

[0005] (1) When pressurizing, an active pressure plate is used, but the active pressure plate is fixed. After long-term use, its pressurizing effect in practice will be reduced, and it cannot be conveniently replaced, reducing the use effect in practice.

[0006] (2) When demolding, the active pressure plate is separated from the inside of the mold bottom frame. Therefore, the demolding effect is poor during demolding, reducing the demolding efficiency in practice and being not conducive to popularization and use in practice.

[0007] Therefore, the utility model presents a pressure maintenance device for an injection molding mold. Content of the Utility Model

[0008] Aiming at the deficiencies of the prior art, the utility model provides a pressure maintenance device for an injection molding mold, which has the advantages of being able to replace the pressure plate and being able to demold conveniently, and solves the problems raised in the background technique.

[0009] The utility model provides the following technical solution: An injection molding die pressure holding device, including a bottom plate and a connecting block. A replacement mechanism is provided at the bottom of the connecting block. The replacement mechanism includes a clamping block, an abutting block, a pressing plate, a sleeving block and a first fixing bolt. The outer surface of the clamping block is movably connected to the inside of the connecting block. The left side of the abutting block abuts against the right side of the clamping block. The upper surface of the pressing plate abuts against the lower surface of the abutting block. The bottom of the sleeving block is fixedly connected to the upper surface of the pressing plate. The inside of the sleeving block is clamped to the outer surface of the abutting block. The outer surface of the first fixing bolt is threadedly connected to the inside of the clamping block and the outer surface of the first fixing bolt is also threadedly connected to the inside of the abutting block.

[0010] Preferably, a demolding mechanism is provided at the bottom of the connecting block. The demolding mechanism includes a movable block, a screw rod, a handle and an abutting pad. The outer surface of the movable block is movably connected to the inside of the connecting block. The outer surface of the screw rod is threadedly connected to the inside of the movable block. The right side of the handle is fixedly connected to one end of the screw rod. The left side of the abutting pad is fixedly connected to the other end of the screw rod.

[0011] Preferably, an extension plate is fixedly installed on the left side of the abutting block. The bottom of the extension plate fits against the upper surface of the connecting block.

[0012] Preferably, a second fixing bolt is threadedly connected to the inside of the extension plate. The outer surface of the second fixing bolt is threadedly connected to the inside of the connecting block.

[0013] Preferably, a mold frame is clamped inside the bottom plate. A U-shaped frame is fixedly installed on the upper surface of the bottom plate. A hydraulic cylinder is provided on the upper surface of the U-shaped frame. The output shaft of the hydraulic cylinder is fixedly connected to the upper surface of the connecting block.

[0014] Preferably, a limiting groove is formed inside the movable block. A limiting rod is clamped inside the limiting groove. A fixing plate is fixedly clamped on the outer surface of the limiting rod. The bottom of the fixing plate is fixedly connected to the upper surface of the connecting block.

[0015] Preferably, a connecting spring is fixedly installed inside the U-shaped frame. A telescopic rod is fixedly installed inside the U-shaped frame. One end of the connecting spring is fixedly connected to the upper surface of the connecting block. One end of the telescopic rod is fixedly connected to the upper surface of the connecting block.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. For this injection molding die pressure holding device, through the use of the replacement mechanism, when this injection molding die pressure holding device is in use and needs to be replaced after long-term use of the pressure plate, first, take out the first fixing bolt from inside the clamping block and the abutting block, and then take out the second fixing bolt from inside the extension plate and the connecting block. Thus, there is no mutual force between the clamping block and the connecting block, and the clamping block can be pulled out from inside the connecting block, and the right side of the clamping block can be separated from the left side of the abutting block. Then, the abutting block can be pulled out from inside the socket block. After pulling out the abutting block, it effectively solves the problem of how to replace the pressure plate, can achieve the effect of convenient replacement in practice, at the same time, improves the subsequent pressurization effect, and can improve the overall use effect in practice.

[0018] 2. For this injection molding die pressure holding device, through the use of the demolding mechanism, when this injection molding die pressure holding device is in use and demolding is carried out, first, when optimally adjusting the position of the movable block, the movable block can be slid inside the connecting block. After sliding, the limiting rod can be inserted into the movable block and the limiting groove. Then, turn the handle to rotate the screw rod inside the movable block. Thus, the right side of the abutting pad can be abutted against the left side of the mold frame. Finally, under the power action of the hydraulic cylinder, the position of the mold frame can be pulled up, effectively solving the problem of how to carry out convenient demolding after pressurization, can achieve a faster demolding effect, and at the same time improves the demolding efficiency in practice, which is conducive to popularization and use in practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 For the present utility model Figure 1 schematic side view structure diagram;

[0021] Figure 3 For the present utility model Figure 1 schematic structure diagram of the replacement mechanism;

[0022] Figure 4 For the present utility model Figure 1 schematic structure diagram of the demolding mechanism.

[0023] In the figure: 1, bottom plate; 2, mold frame; 3, U-shaped frame; 4, hydraulic cylinder; 5, connecting block; 6, connecting spring; 7, telescopic rod; 8, clamping block; 9, abutting block; 10, pressing plate; 11, socket block; 12, first fixing bolt; 13, extension plate; 14, second fixing bolt; 15, movable block; 16, screw rod; 17, handle; 18, abutting pad; 19, fixing plate; 20, limiting rod; 21, limiting groove; 22, replacement mechanism; 23, demolding mechanism. Specific implementation manner

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figure 3 , a pressure maintaining device for an injection molding die, comprising a bottom plate 1 and a connecting block 5. A replacement mechanism 22 is arranged at the bottom of the connecting block 5. The replacement mechanism 22 includes a clamping block 8, an abutting block 9, a pressing plate 10, a socket block 11 and a first fixing bolt 12. The outer surface of the clamping block 8 is movably connected to the inside of the connecting block 5. The left side of the abutting block 9 abuts against the right side of the clamping block 8. The upper surface of the pressing plate 10 abuts against the lower surface of the abutting block 9. The bottom of the socket block 11 is fixedly connected to the upper surface of the pressing plate 10. The inside of the socket block 11 is clamped with the outer surface of the abutting block 9. The outer surface of the first fixing bolt 12 is threadedly connected to the inside of the clamping block 8, and the outer surface of the first fixing bolt 12 is threadedly connected to the inside of the abutting block 9. An extension plate 13 is fixedly installed on the left side of the abutting block 9. The bottom of the extension plate 13 fits against the upper surface of the connecting block 5. A second fixing bolt 14 is threadedly connected to the inside of the extension plate 13. The outer surface of the second fixing bolt 14 is threadedly connected to the inside of the connecting block 5. By using the clamping block 8, the abutting block 9, the pressing plate 10, the socket block 11 and the first fixing bolt 12, the effect of convenient replacement in practice can be achieved. At the same time, the subsequent pressurizing effect is improved, and the overall use effect in practice can be improved.

[0026] Please refer to Figure 4, a demolding mechanism 23 is provided at the bottom of the connecting block 5. The demolding mechanism 23 includes a movable block 15, a screw 16, a handle 17 and an abutting pad 18. The outer surface of the movable block 15 is movably connected to the inside of the connecting block 5. The outer surface of the screw 16 is threadedly connected to the inside of the movable block 15. The right side of the handle 17 is fixedly connected to one end of the screw 16. The left side of the abutting pad 18 is fixedly connected to the other end of the screw 16. A limiting groove 21 is formed inside the movable block 15, and a limiting rod 20 is clamped inside the limiting groove 21. A fixing plate 19 is fixedly clamped on the outer surface of the limiting rod 20, and the bottom of the fixing plate 19 is fixedly connected to the upper surface of the connecting block 5. By using the movable block 15, the screw 16, the handle 17 and the abutting pad 18, a faster demolding effect can be achieved, and at the same time, the demolding efficiency in practice is improved, which is conducive to popularization and use in practice.

[0027] Please refer to Figure 1 and Figure 2 , a mold frame 2 is clamped inside the bottom plate 1. A U-shaped frame 3 is fixedly installed on the upper surface of the bottom plate 1. A hydraulic cylinder 4 is arranged on the upper surface of the U-shaped frame 3. The output shaft of the hydraulic cylinder 4 is fixedly connected to the upper surface of the connecting block 5. A connecting spring 6 is fixedly installed inside the U-shaped frame 3. A telescopic rod 7 is fixedly installed inside the U-shaped frame 3. One end of the connecting spring 6 is fixedly connected to the upper surface of the connecting block 5. One end of the telescopic rod 7 is fixedly connected to the upper surface of the connecting block 5. It can be more efficient when pressurizing the mold, which is convenient for convenient operation and use in practice and improves the quality of the mold.

[0028] Working principle: When in use, under the action of the hydraulic cylinder 4, the connecting spring 6, the telescopic rod 7 and the pressing plate 10, when demolding after pressurization, when the pressure reaches a certain position, the mold can be formed. At the same time of the pressure, the position of the movable block 15 can move down synchronously. When optimally adjusting the position of the movable block 15, the movable block 15 can slide inside the connecting block 5. After sliding well, the limiting rod 20 can be inserted into the limiting groove 21 inside the movable block 15. Then the handle 17 can be rotated to rotate the screw 16 inside the movable block 15, and then the right side of the abutting pad 18 can be abutted against the left side of the mold frame 2. Finally, under the power action of the hydraulic cylinder 4, the position of the mold frame 2 can be pulled up, and then the relevant demolding of the mold frame 2 can be carried out.

[0029] When replacing the pressing plate 10, take out the first fixing bolt 12 from the inside of the clamping block 8 and the abutting block 9, and then take out the second fixing bolt 14 from the inside of the extension plate 13 and the connecting block 5. Then, there is no mutual force between the clamping block 8 and the connecting block 5, so that the clamping block 8 can be withdrawn from the inside of the connecting block 5, and the right side of the clamping block 8 can be separated from the left side of the abutting block 9. Furthermore, the abutting block 9 can be withdrawn from the inside of the socket block 11. After the abutting block 9 is withdrawn, the pressing plate 10 can be taken out separately for replacement, which is convenient for replacing the pressing plate 10 in practice.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure maintaining device for an injection molding mold, characterized in that: The invention comprises a bottom plate (1) and a connecting block (5), wherein a replacement mechanism (22) is arranged at the bottom of the connecting block (5), wherein the replacement mechanism (22) comprises a clamping block (8), an abutting block (9), a pressing plate (10), a sleeve block (11) and a first fixing bolt (12), wherein the outer surface of the clamping block (8) is movably connected to the inside of the connecting block (5), the left side of the abutting block (9) abuts against the right side of the clamping block (8), the upper surface of the pressing plate (10) abuts against the lower surface of the abutting block (9), the bottom of the sleeve block (11) is fixedly connected to the upper surface of the pressing plate (10), the inside of the sleeve block (11) is clamped with the outer surface of the abutting block (9), the outer surface of the first fixing bolt (12) is threadedly connected to the inside of the clamping block (8), and the outer surface of the first fixing bolt (12) is threadedly connected to the inside of the abutting block (9).

2. The pressure maintaining device for an injection molding mold according to claim 1, characterized in that: A demoulding mechanism (23) is provided at the bottom of the connecting block (5), and the demoulding mechanism (23) comprises a movable block (15), a screw rod (16), a handle (17) and an abutment pad (18); the outer surface of the movable block (15) is movably connected to the inside of the connecting block (5); the outer surface of the screw rod (16) is threadedly connected to the inside of the movable block (15); the right side of the handle (17) is fixedly connected to one end of the screw rod (16); and the left side of the abutment pad (18) is fixedly connected to the other end of the screw rod (16).

3. The pressure maintaining device for an injection molding mold according to claim 1, characterized in that: An extension plate (13) is fixedly mounted on the left side of the abutment block (9), and the bottom of the extension plate (13) is in contact with the upper surface of the connection block (5).

4. The pressure maintaining device for an injection molding mold according to claim 3, characterized in that: The inner thread of the extension plate (13) is connected to a second fixing bolt (14), and the outer surface of the second fixing bolt (14) is connected to the inner thread of the connection block (5).

5. The injection molding mold pressure maintaining device according to claim 1, characterized in that: The interior of the base plate (1) is clamped with a mold frame (2), the upper surface of the base plate (1) is fixedly mounted with a U-shaped frame (3), the upper surface of the U-shaped frame (3) is provided with a hydraulic cylinder (4), and the output shaft of the hydraulic cylinder (4) is fixedly connected to the upper surface of the connecting block (5).

6. The pressure maintaining device for an injection molding mold according to claim 2, characterized in that: A limiting groove (21) is provided inside the movable block (15), a limiting rod (20) is clamped inside the limiting groove (21), a fixing plate (19) is fixedly clamped on the outer surface of the limiting rod (20), and the bottom of the fixing plate (19) is fixedly connected to the upper surface of the connecting block (5).

7. The pressure maintaining device for an injection molding mold according to claim 5, characterized in that: A connecting spring (6) is fixedly installed inside the U-shaped frame (3), and a telescopic rod (7) is fixedly installed inside the U-shaped frame (3); one end of the connecting spring (6) is fixedly connected to the upper surface of the connecting block (5), and one end of the telescopic rod (7) is fixedly connected to the upper surface of the connecting block (5).

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