CN223013799U - Secondary ejection device - Google Patents
Secondary ejection device Download PDFInfo
- Publication number
- CN223013799U CN223013799U CN202323640988.1U CN202323640988U CN223013799U CN 223013799 U CN223013799 U CN 223013799U CN 202323640988 U CN202323640988 U CN 202323640988U CN 223013799 U CN223013799 U CN 223013799U
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- plate
- movable die
- ejector pin
- push plate
- ejector
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Abstract
The utility model discloses a secondary ejection device, which relates to the technical field of ejection of injection molds and comprises a movable mold assembly and an ejection device, wherein the movable mold assembly comprises a movable mold plate, a movable mold insert and a movable mold insert, the movable mold insert is arranged in the movable mold plate, the ejection device comprises a push plate, an ejection spring, an ejector pin plate and an ejector pin bottom plate, the push plate is fixedly connected with the movable mold insert and is arranged below the movable mold insert, a gap is reserved between the lower surface of the push plate and the upper surface of the movable mold insert, the ejection spring is vertically arranged between the push plate and the ejector pin plate, one end of the ejector pin is vertically fixed above the ejector pin plate, the other end of the ejector pin is directed towards the movable mold insert, and the ejector pin bottom plate is arranged below the ejector pin plate. The utility model uses the single ejector pin plate and the ejector spring, can realize the secondary ejection function without adding a sequential die opening assembly, and has simple assembly and low cost.
Description
Technical Field
The utility model relates to a secondary ejection device, and belongs to the technical field of ejection of injection molds.
Background
When using injection mold to produce plastic products, the heated and melted plastic is injected into the mold cavity by the injection molding machine under high pressure and then cooled and molded, and then the product is often required to be ejected out by an ejection device so as to be separated from the mold. In the existing ejection device, the ejection action is finished at one time. However, when some products with special structures are processed, the conventional one-time ejection device cannot eject and demold the products smoothly, or the appearance of the ejected products cannot meet the requirements of customers. Therefore, the design of the secondary ejection device begins to appear, but the existing secondary ejection device generally adopts a group of ejector plates, and realizes secondary ejection through a shutter or other sequential mold opening mechanisms, so that the structure is complex in assembly, low in precision and unstable, and high Wen Kasi is easy to cause.
Disclosure of utility model
In order to solve the technical problems, the utility model provides a secondary ejection device of an injection mold, which is simple to assemble, stable in ejection action and high in precision.
The technical scheme of the utility model is that the secondary ejection device of the injection mold comprises a movable mold component and an ejection device;
The movable die assembly comprises a movable die plate, a movable die insert and a movable die insert, wherein the movable die insert is arranged in the movable die insert, and the movable die insert is arranged in the movable die plate;
The ejection device comprises a push plate, an ejection spring, an ejector pin plate and an ejector pin bottom plate, wherein the push plate is fixedly connected with the movable die insert, is arranged below the movable die insert, a gap is formed between the lower surface of the push plate and the upper surface of the movable die insert, the ejection spring is vertically arranged between the push plate and the ejector pin plate, one end of the ejector pin is vertically fixed above the ejector pin plate, the other end of the ejector pin is directed towards the movable die insert, and the ejector pin bottom plate is arranged below the ejector pin plate.
Further, screw holes are formed in the surface of the push plate, and the movable die insert is in locking connection with the push plate through bolts.
Further, a positioning hole is formed in the surface of the push plate, and the movable die insert, the push plate and the movable die insert which are connected together are positioned through a positioning pin.
Further, the thimble plate is provided with a stepped hole, and the lower side end of the thimble is fixed on the lower surface of the thimble plate and cannot move upwards.
Further, the ejector pin die also comprises a guide rod, wherein the guide rod is fixedly connected with the ejector pin base plate through a bolt and penetrates through the ejector spring to be matched with guide holes formed in the push plate and the movable die insert.
Further, the diameters of the two ends of the guide rod are different, one end is a short and thick big end, and the other end is a slender small end. The big end of the guide rod is matched with the guide holes arranged on the movable mould insert and the push plate, and the small end of the guide rod is connected with the thimble bottom plate through a bolt.
Further, the movable ejector pin plate also comprises a reset rod and a reset spring, wherein the reset rod penetrates through the reset spring to be matched with the reset hole formed in the movable module and the ejector pin plate, and the reset spring is vertically arranged between the ejector pin plate and the movable module.
The double-ejection mechanism has the advantages that the double-ejection mechanism can realize the double-ejection function by utilizing the combination of the single-ejection needle plate and the ejection spring without adding an additional sequential die opening assembly, is simple to assemble and low in cost, and has higher precision than a conventional double-ejection device due to the fact that the push plate and the insert are positioned, and the ejection and reset actions are more stable and accurate by utilizing the combination of the reset spring, the guide rod and the ejection device.
Drawings
FIG. 1 is a front view of the present utility model;
FIG. 2 is a cross-sectional view of the utility model at FIGS. 1 A-A;
FIG. 3 is a cross-sectional view of the utility model at FIGS. 1B-B;
FIG. 4 is an enlarged view of a portion of FIG. 2A in accordance with the present utility model;
The reference numerals in the drawings are as follows:
1. The movable die assembly, the movable die plate, the movable die insert and the movable die insert are respectively arranged in the cavity of the movable die assembly and the movable die plate;
2. An ejector device; 21 parts of push plate, 22 parts of ejection spring, 23 parts of ejector pin, 24 parts of ejector pin plate, 25 parts of ejector pin base plate;
3. a reset lever; 4, a return spring, 5, a guide rod, 6, a locating pin, 7, a push plate bolt, 8 and an insert bolt.
Detailed Description
The utility model will now be described in detail with reference to the drawings and to specific embodiments.
Referring to fig. 1, 2 and 3, a secondary ejection device comprises a movable die assembly 1 and an ejection device 2;
The movable die assembly 1 comprises a movable die plate 11, a movable die insert 12 and a movable die insert 13, wherein the movable die insert 13 is arranged in the movable die insert 12, and the movable die insert 12 is arranged in the movable die plate 11;
The ejection device 2 comprises a push plate 21, an ejection spring 22, an ejector pin 23, an ejector plate 24 and an ejector pin bottom plate 25, wherein the push plate 21 is fixedly connected with the movable die insert 13 and is arranged below the movable die insert 12, a gap is formed between the lower surface of the push plate 21 and the upper surface of the movable die insert 12, the ejection spring 22 is vertically arranged between the push plate 21 and the ejector plate 24, one end of the ejector pin 23 is vertically fixed above the ejector plate 24, the other end of the ejector pin 23 points to the movable die insert 13, and the ejector pin bottom plate 25 is arranged below the ejector plate 24.
When the ejector pin 23 is ejected outwards under the action of a motor, the ejector spring 22 is stretched by force to drive the push plate 21 to move, so that the movable die insert 13 and the ejector pin 23 are ejected outwards simultaneously, and one ejection is realized;
When the upper surface of the push plate 21 is in contact with the lower surface of the movable die insert 12, the bottom surface of the movable die insert 12 of the push plate 21 is limited, the push plate 21 and the movable die insert 13 do not move outwards any more, and the ejector pins 23 are continuously ejected outwards under the action of a motor, so that secondary ejection is realized.
Further, screw holes are formed in the surface of the push plate 21, and the movable die insert 13 is in locking connection with the push plate 21 through an insert bolt 8.
Further, a positioning hole is formed in the surface of the push plate 21, and the movable die insert 13, the push plate 21 and the movable die insert 12 which are connected together are positioned by the positioning pin 11.
Further, the ejector plate 24 is provided with a stepped hole, and the lower side end of the ejector pin 23 is fixed to the lower surface of the ejector plate 24 so as not to move upward.
Further, the ejector pin assembly further comprises a guide rod 5, wherein the guide rod 5 is fixedly connected with the ejector pin bottom plate 25 through the push plate bolt 7 and penetrates through the ejector spring 22 to be matched with guide holes formed in the push plate 21 and the movable die insert 12.
Further, the diameters of the two ends of the guide rod 5 are different, one end is a short and thick big end, and the other end is a slender small end. The big end of the guide rod 5 is matched with the movable mould insert 12 and the guide holes arranged on the push plate 21, and the small end is connected with the thimble bottom plate 25 through the push plate bolt 7.
Further, the movable die plate further comprises a reset rod 3 and a reset spring 4, wherein the reset rod 3 penetrates through the reset spring 4 to be matched with a reset hole formed in the movable die plate 11 and the ejector plate 24, and the reset spring 4 is vertically arranged between the ejector plate 24 and the movable die plate 11.
When the ejection effect of the motor is eliminated, the ejector plate 24 and the ejector bottom plate 25 retract under the combined action of the ejection spring 22 and the return spring 4, and the guide rod 5 pulls back the push plate 21 and the movable mold insert 13, so that the return is realized.
The double-ejection mechanism has the advantages that the double-ejection mechanism can realize the double-ejection function without adding an additional sequential die opening assembly due to the combination of the single-ejection plate and the ejection spring, is simple to assemble and low in cost, has higher precision than a conventional ejection device due to the fact that the push plate 21, the movable die insert 13 and the movable die insert 12 are positioned, and enables ejection and reset actions to be more stable and accurate due to the combination of the reset spring 4, the guide rod 5 and the ejection device.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (5)
1. The secondary ejection device is characterized by comprising a movable die assembly (1) and an ejection device (2);
The movable die assembly (1) comprises a movable die plate (11), a movable die insert (12) and a movable die insert (13), wherein the movable die insert (13) is arranged in the movable die insert (12), and the movable die insert (12) is arranged in the movable die plate (11);
The ejection device (2) comprises a push plate (21), an ejection spring (22), an ejector pin (23), an ejector pin plate (24) and an ejector pin bottom plate (25), wherein the push plate (21) is fixedly connected with the movable die insert (13) and is arranged below the movable die insert (12), a gap is reserved between the lower surface of the push plate (21) and the upper surface of the movable die insert (12), the ejection spring (22) is vertically arranged between the push plate (21) and the ejector pin plate (24), one end of the ejector pin (23) is vertically fixed above the ejector pin plate (24), and the other end of the ejector pin is directed towards the movable die insert (13), and the ejector pin bottom plate (25) is arranged below the ejector pin plate (24);
Screw holes are formed in the surface of the push plate (21), and the movable die insert (13) is in locking connection with the push plate (21) through an insert bolt (8);
The novel ejector pin structure is characterized by further comprising a guide rod (5), wherein the guide rod (5) is fixedly connected with the ejector pin base plate (25) through a push plate bolt (7) and penetrates through an ejector spring (22) to be matched with guide holes formed in the push plate (21) and the movable die insert (12).
2. The secondary ejection device according to claim 1, wherein a positioning hole is formed in the surface of the push plate (21), and the movable mold insert (13), the push plate (21) and the movable mold insert (12) which are connected together are positioned by the positioning pin (6).
3. The secondary ejection device according to claim 1, wherein the ejector plate (24) is provided with a stepped hole, and a lower side end of the ejector pin (23) is fixed to a lower surface of the ejector plate (24).
4. The secondary ejection device of claim 1, wherein the diameters of two ends of the guide rod (5) are different, one end is a short and thick big end, and the other end is a slender small end, the big end of the guide rod (5) is matched with guide holes arranged on the movable die insert (12) and the push plate (21), and the small end is connected with the thimble bottom plate (25) through the push plate bolt (7).
5. The secondary ejection device of claim 1, further comprising a reset rod (3) and a reset spring (4), wherein the reset rod (3) penetrates through the reset spring (4) to be matched with reset holes formed in the movable die plate (11) and the ejector plate (24), and the reset spring (4) is vertically arranged between the ejector plate (24) and the movable die plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323640988.1U CN223013799U (en) | 2023-12-29 | 2023-12-29 | Secondary ejection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323640988.1U CN223013799U (en) | 2023-12-29 | 2023-12-29 | Secondary ejection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223013799U true CN223013799U (en) | 2025-06-24 |
Family
ID=96090952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323640988.1U Active CN223013799U (en) | 2023-12-29 | 2023-12-29 | Secondary ejection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223013799U (en) |
-
2023
- 2023-12-29 CN CN202323640988.1U patent/CN223013799U/en active Active
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