CN215619688U - Injection mold of circular thin-wall part - Google Patents
Injection mold of circular thin-wall part Download PDFInfo
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- CN215619688U CN215619688U CN202122305432.1U CN202122305432U CN215619688U CN 215619688 U CN215619688 U CN 215619688U CN 202122305432 U CN202122305432 U CN 202122305432U CN 215619688 U CN215619688 U CN 215619688U
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Abstract
The utility model provides an injection mold for a circular thin-wall part, which comprises a fixed mold base plate and a movable mold base plate, wherein the fixed mold base plate is positioned above the movable mold base plate, a fixed mold plate is fixed at the lower end of the fixed mold base plate, and a fixed mold insert and an injection molding channel are arranged in the fixed mold plate; the upper end of the movable mould seat plate is provided with a cushion seat; a middle cushion plate is fixed at the upper end of the cushion seat, a movable template is arranged on the middle cushion plate, mold locking push blocks are arranged on two sides of the movable template, mold locking press blocks are arranged on the mold locking push blocks, and the mold locking press blocks are fixed on the movable template; a movable mold insert is arranged in the middle of the upper end of the movable mold plate, and an injection molding inner cavity is arranged in the movable mold insert; the upper end of the middle backing plate is provided with a movable mold core; the fixed die plate is fixed with the locking module in both sides, and locking module lower extreme and mode locking ejector pad joint, well backing plate both sides are fixed with the unlocking piece, and unlocking piece upper end is higher than the mode locking ejector pad. The utility model realizes the die sinking process of two stages, avoids the sticking of the die to the part and improves the finished product rate and the efficiency of the part; the damage of the die parts is reduced, and the maintenance cost is reduced.
Description
Technical Field
The utility model relates to the technical field of injection molds for circular thin-wall parts, in particular to an injection mold for a circular thin-wall part, which is easy to demold.
Background
When the circular thin-wall part is injected, the inner wall and the outer wall of the circular thin-wall part are in contact with parts such as a movable mold core, a fixed mold core, a movable mold insert and the like, and due to the thin wall, the plastic flowing space is small during injection molding, the flowing is easily blocked due to the temperature reduction, and the mold thin-wall cavity is not easy to fill fully. To solve this problem, filling the mold cavity is often achieved by increasing the mold temperature, increasing the injection pressure and the injection speed of the machine tool. However, with the increase of the injection pressure and the injection speed, the packing force between the plastic part and the parts such as the movable mold core, the fixed mold core, the movable mold insert and the like is increased, so that the plastic part is difficult to demold, and the parts are deformed, adhered to the mold, broken and the like. Meanwhile, the parts are frequently adhered to the mold, so that the damage to the parts of the mold is large, the parts are frequently replaced, the maintenance cost is increased, the qualified rate of the parts is reduced, and the delivery time is prolonged.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an injection mold for a circular thin-wall part.
The utility model is realized by the following technical scheme.
The utility model provides an injection mold for a circular thin-wall part, which comprises a fixed mold base plate and a movable mold base plate, wherein the fixed mold base plate is positioned above the movable mold base plate, a fixed mold plate is fixed at the lower end of the fixed mold base plate, and a fixed mold insert and an injection molding channel are arranged in the fixed mold plate;
the upper end of the movable mold seat plate is provided with a cushion seat; a middle cushion plate is fixed at the upper end of the cushion seat, a movable template is arranged on the middle cushion plate, mold locking push blocks are arranged on two sides of the movable template, springs are arranged between the inner sides of the mold locking push blocks and the movable template, mold locking press blocks are arranged on the mold locking push blocks, and the mold locking press blocks are fixed on the movable template; a movable mold main insert is accommodated in the middle of the upper end of the movable template, a movable mold insert is arranged in the movable mold main insert, an injection molding inner cavity is arranged in the movable mold insert, and the injection molding inner cavity is communicated with the injection molding channel;
the middle part of the upper end of the middle backing plate is accommodated with a core fixing plate, a movable mold core is arranged in the core fixing plate, and the upper end of the movable mold core is positioned in the injection molding inner cavity;
the fixed die plate is characterized in that lock modules are fixed on two sides of the fixed die plate, the lower ends of the lock modules are clamped with the die locking push blocks, unlocking blocks are fixed on two sides of the middle backing plate, the upper ends of the unlocking blocks are higher than the die locking push blocks, and inclined planes are oppositely arranged on the upper portions of the outer sides of the die locking push blocks and the unlocking blocks.
The upper end of the movable mould seat plate is also provided with an ejector rod base plate, the base seats are positioned at two sides of the ejector rod base plate, ejector rods are arranged on the ejector rod base plate, and through holes for the ejector rods to pass through are formed in the middle base plate and the movable mould core.
The ejector rod is provided with a plurality of ejector rods.
The ejector rod fixing plate is further arranged on the ejector rod base plate, the ejector rod penetrates through the ejector rod fixing plate, and the lower end of the ejector rod is provided with a limiting step which is clamped with the ejector rod fixing plate.
The movable mould core lower extreme is equipped with limit structure, and limit structure and the mutual joint of core fixed plate.
And a core backing plate is also arranged below the movable mold core.
The fixed die base plate is also provided with a guide rod, and the middle base plate, the movable die plate and the fixed die plate are provided with through holes for the guide rod to pass through.
The upper end of the fixed die base plate is also provided with a first heat insulation plate.
The first heat insulation plate is connected with the fixed die base plate through a screw.
And a second heat insulation plate is also arranged at the lower end of the movable mold base plate.
The utility model has the beneficial effects that:
by adopting the mould locking device, the mould opening process in two stages is realized through the mould locking push block, the spring, the mould locking press block, the mould locking module and the unlocking block, a part is separated from the movable mould core firstly and then separated from the movable mould insert, the part is prevented from sticking the mould, and the part qualification rate and the production efficiency are improved; meanwhile, the damage to the die parts is reduced, and the maintenance cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1-fixing a mold base plate; 2-moving the die base plate; 3-fixing a template; 4-fixing the mold insert; 5-injection molding a channel; 6-ejector pin backing plate; 7-a cushion seat; 8-ejector pin fixing plate; 9-a top rod; 10-a middle base plate; 11-moving the template; 12-locking a mold pushing block; 13-a spring; 14-locking a mould pressing block; 15-moving the mold main insert; 16-moving mold insert; 17-core backing plate; 18-a moving mold core; 19-core fixing plate; 20-a lock module; 21-unlocking the locking block; 22-a guide bar; 23-a first insulation board; 24-a second insulation board.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
Fig. 1 shows a schematic structural diagram of the present invention:
the utility model provides an injection mold for a circular thin-wall part, which comprises a fixed mold base plate 1 and a movable mold base plate 2, wherein the fixed mold base plate 1 is positioned above the movable mold base plate 2, a fixed mold plate 3 is fixed at the lower end of the fixed mold base plate 1, and a fixed mold insert 4 and an injection molding channel 5 are arranged in the fixed mold plate 3;
the upper end of the movable mold seat plate 2 is provided with a cushion seat 7; a middle cushion plate 10 is fixed at the upper end of the cushion seat 7, a movable template 11 is arranged on the middle cushion plate 10, mold locking push blocks 12 are arranged on two sides of the movable template 11, springs 13 are arranged between the inner sides of the mold locking push blocks 12 and the movable template 11, mold locking press blocks 14 are arranged on the mold locking push blocks 12, and the mold locking press blocks 14 are fixed on the movable template 11; a movable mold main insert 15 is accommodated in the middle of the upper end of the movable mold plate 11, a movable mold insert 16 is arranged in the movable mold main insert 15, an injection molding inner cavity is arranged in the movable mold insert 16, and the injection molding inner cavity is communicated with the injection molding channel 5;
the middle part of the upper end of the middle base plate 10 is provided with a core fixing plate 19, a movable mold core 18 is arranged in the core fixing plate 19, and the upper end of the movable mold core 18 is positioned in an injection molding inner cavity;
the fixed die plate 3 both sides are fixed with lock module 20, and the lower extreme of lock module 20 and mode locking ejector pad 12 joint, well backing plate 10 both sides are fixed with unlocking piece 21, and unlocking piece 21 upper end is higher than mode locking ejector pad 12, and mode locking ejector pad 12 outside upper portion and unlocking piece 21 are equipped with the inclined plane in opposite directions.
The principle is as follows: after the die is closed, plastic is injected through the injection molding channel 5, and the plastic enters the injection molding inner cavity to be solidified, so that a circular thin-wall part is formed. The mold opening process can be divided into two stages: in the first stage, the movable mold base plate 2 drives the parts on the movable mold base plate to move downwards, the mold locking push block 12 is clamped by the lock module 20, the mold locking press block 14 is fixed on the movable mold plate 11, therefore, the movable mold plate 11 does not move downwards, the movable mold core 18 moves downwards along with the mold core fixing plate 19 and the middle cushion plate 10, and the upper end of the movable mold core 18 is separated from the round thin-wall parts. In the second stage, the upper part of the outer side of the mold locking push block 12 is provided with an inclined surface opposite to the unlocking block 21, so when the mold locking push block 12 contacts with the unlocking block 21, the mold locking push block 12 is pressed into the movable mold plate 11 under the action of the inclined surface, the spring 13 is compressed, the mold locking push block 12 is separated from the lock module 20, the movable mold plate 11 falls back to the middle base plate 10, the part is separated from the movable mold insert 16, and the phenomena of sticking film, tearing and the like can not occur even if the part is tightly attached to the movable mold insert 16.
In conclusion, by adopting the mould locking push block 12, the spring 13, the mould locking press block 14, the lock module 20 and the unlocking block 21, the mould opening process in two stages is realized, the part is separated from the movable mould core 18 firstly and then separated from the movable mould insert 16, the part is prevented from sticking the mould, and the part qualification rate and the production efficiency are improved; meanwhile, the damage to the die parts is reduced, and the maintenance cost is reduced.
The upper end of the movable mold base plate 2 is also provided with an ejector rod base plate 6, the base seats 7 are positioned at two sides of the ejector rod base plate 6, an ejector rod 9 is arranged on the ejector rod base plate 6, and through holes for the ejector rod 9 to pass through are arranged in the middle base plate 10 and the movable mold core 18. After the movable template 11 falls back to the middle cushion plate 10, the ejector rod cushion plate 6 moves upwards, the ejector rod 9 penetrates through the movable mold core 18, and molded fixed parts are ejected out, or when the movable template 11 falls back to the middle cushion plate 10, the ejector rod cushion plate 6 is not moved, and molded parts are ejected out, so that the operation is convenient.
The ejector rod 9 is provided with a plurality of rods. The stress area is convenient to increase, and the part is prevented from being burst.
And an ejector rod fixing plate 8 is further arranged on the ejector rod base plate 6, an ejector rod 9 penetrates through the ejector rod fixing plate 8, and a limiting step is arranged at the lower end of the ejector rod 9 and is connected with the ejector rod fixing plate 8 in a clamping manner. The ejector rod 9 can be fixed without welding, and is convenient to disassemble and assemble.
The lower end of the movable mould core 18 is provided with a limiting structure, and the limiting structure is clamped with the core fixing plate 19. The position of the movable mold core 18 is convenient to fix, and the stability is improved.
And a core backing plate 17 is arranged below the movable mold core 18.
The fixed die base plate 1 is further provided with a guide rod 22, and the middle backing plate 10, the movable die plate 11 and the fixed die plate 3 are provided with through holes for the guide rod 22 to pass through. The horizontal relative positions of the fixed die base plate 1 and the movable die base plate 2 are convenient to limit, and the difficulty of die opening and die closing is small.
The upper end of the fixed die base plate 1 is also provided with a first heat insulation plate 23.
The first heat insulating plate 23 is connected with the fixed mold base plate 1 by screws.
And a second heat insulation plate 24 is further arranged at the lower end of the movable mold base plate 2.
Claims (10)
1. The utility model provides an injection mold of circular thin wall part which characterized in that: the injection molding device comprises a fixed die base plate (1) and a movable die base plate (2), wherein the fixed die base plate (1) is positioned above the movable die base plate (2), a fixed die plate (3) is fixed at the lower end of the fixed die base plate (1), and a fixed die insert (4) and an injection molding channel (5) are arranged in the fixed die plate (3);
the upper end of the movable mold seat plate (2) is provided with a cushion seat (7); a middle cushion plate (10) is fixed at the upper end of the cushion seat (7), a movable template (11) is arranged on the middle cushion plate (10), mold locking push blocks (12) are arranged on two sides of the movable template (11), a spring (13) is arranged between the inner side of each mold locking push block (12) and the movable template (11), a mold locking press block (14) is arranged on each mold locking push block (12), and the mold locking press block (14) is fixed on the movable template (11); a movable mold main insert (15) is contained in the middle of the upper end of the movable mold plate (11), a movable mold insert (16) is arranged in the movable mold main insert (15), an injection molding inner cavity is arranged in the movable mold insert (16), and the injection molding inner cavity is communicated with the injection molding channel (5);
the middle part of the upper end of the middle base plate (10) is provided with a core fixing plate (19), a movable mold core (18) is arranged in the core fixing plate (19), and the upper end of the movable mold core (18) is positioned in an injection molding inner cavity;
the fixed die plate is characterized in that locking modules (20) are fixed on two sides of the fixed die plate (3), the lower ends of the locking modules (20) are clamped with the die locking push blocks (12), unlocking blocks (21) are fixed on two sides of the middle base plate (10), the upper ends of the unlocking blocks (21) are higher than the die locking push blocks (12), and inclined planes are oppositely arranged on the upper portions of the outer sides of the die locking push blocks (12) and the unlocking blocks (21).
2. An injection mold for a circular thin-walled part according to claim 1, characterized in that: the upper end of the movable mold base plate (2) is further provided with an ejector rod base plate (6), the base seats (7) are located on two sides of the ejector rod base plate (6), ejector rods (9) are arranged on the ejector rod base plate (6), and through holes for the ejector rods (9) to penetrate are formed in the middle base plate (10) and the movable mold core (18).
3. An injection mold for a circular thin-walled part according to claim 2, characterized in that: the ejector rod (9) is provided with a plurality of ejector rods.
4. An injection mold for a circular thin-walled part according to claim 2, characterized in that: the ejector rod backing plate (6) is further provided with an ejector rod fixing plate (8), the ejector rod (9) penetrates through the ejector rod fixing plate (8), and the lower end of the ejector rod (9) is provided with a limiting step and is connected with the ejector rod fixing plate (8) in a clamping mode.
5. An injection mold for a circular thin-walled part according to claim 1, characterized in that: the lower end of the movable mold core (18) is provided with a limiting structure, and the limiting structure is clamped with the core fixing plate (19) mutually.
6. An injection mold for a circular thin-walled part according to claim 5, characterized in that: and a core backing plate (17) is also arranged below the movable mould core (18).
7. An injection mold for a circular thin-walled part according to claim 1, characterized in that: the fixed die base plate (1) is further provided with a guide rod (22), and the middle backing plate (10), the movable die plate (11) and the fixed die plate (3) are provided with through holes for the guide rod (22) to pass through.
8. An injection mold for a circular thin-walled part according to claim 1, characterized in that: the upper end of the fixed die base plate (1) is also provided with a first heat insulation plate (23).
9. An injection mold for a circular thin-walled part according to claim 8, characterized in that: the first heat insulation plate (23) is connected with the fixed die base plate (1) through a screw.
10. An injection mold for a circular thin-walled part according to claim 1, characterized in that: and a second heat insulation plate (24) is also arranged at the lower end of the movable mold base plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122305432.1U CN215619688U (en) | 2021-09-23 | 2021-09-23 | Injection mold of circular thin-wall part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122305432.1U CN215619688U (en) | 2021-09-23 | 2021-09-23 | Injection mold of circular thin-wall part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215619688U true CN215619688U (en) | 2022-01-25 |
Family
ID=79918843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122305432.1U Active CN215619688U (en) | 2021-09-23 | 2021-09-23 | Injection mold of circular thin-wall part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215619688U (en) |
-
2021
- 2021-09-23 CN CN202122305432.1U patent/CN215619688U/en active Active
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