CN217803133U - Rotary ejection mechanism of injection mold - Google Patents
Rotary ejection mechanism of injection mold Download PDFInfo
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- CN217803133U CN217803133U CN202220657929.1U CN202220657929U CN217803133U CN 217803133 U CN217803133 U CN 217803133U CN 202220657929 U CN202220657929 U CN 202220657929U CN 217803133 U CN217803133 U CN 217803133U
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Abstract
The utility model relates to an injection mold's rotatory ejection mechanism, including the movable mould, the movable mould includes that the movable mould inserts, the movable mould still includes thimble board, rotatory core-pulling piece and guide block, rotatory core-pulling piece with the thimble board be connected and can for the thimble board is rotatory, the guide block cover is established on the rotatory core-pulling piece and with the movable mould is fixed, the side system of guide block has the guide slot, the guide slot includes oblique guide slot, be equipped with the fixture block on the rotatory core-pulling piece, the tip of fixture block is located in the guide slot and can along the guide slot reciprocates. Compared with the prior art, the rotary core-pulling block of the utility model can complete core-pulling in a rotating way while ejecting, has simple structure, simple and stable movement process, reduces the space occupied by the mechanism and reduces the cost of the mould; the die core pulling device can prevent a product from sticking a movable die insert and a rotary core pulling block, ensures stable demoulding and improves the yield of the product.
Description
Technical Field
The utility model relates to an injection mold's rotatory ejection mechanism belongs to injection mold technical field.
Background
During injection molding, the situation that the product is inverted is often encountered. Part back-off structure is special, needs to accomplish simultaneously ejecting and loosing core when the drawing of patterns. The ejection mechanism in the prior art has a complex structure, a large volume and a complicated and unstable motion process; and the condition that the ejection mechanism is stuck is easy to occur to the back-off during demoulding, so that demoulding failure is caused, and the finished product rate of products is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at prior art's shortcoming, provide a realize product back-off smooth drawing of patterns's injection mold's rotatory ejection mechanism.
For realizing the purpose the utility model adopts the technical proposal that:
injection mold's rotatory ejection mechanism, including the movable mould, the movable mould includes the movable mould insert, the movable mould still includes thimble board, rotatory core extraction piece and guide block, rotatory core extraction piece with the thimble board is connected and can for the thimble board is rotatory, the guide block cover is established rotatory core extraction piece on and with the movable mould is fixed, the side system of guide block has the guide slot, the guide slot includes oblique guide slot, be equipped with the fixture block on the rotatory core extraction piece, the tip of fixture block is located in the guide slot and can along the guide slot reciprocates.
As a further optimization of the above technical solution: when the die is closed, the top of the rotary core-pulling block and the movable die insert jointly form part of a die cavity.
As a further optimization of the above technical solution: the rotary core pulling block comprises a rotary head and a connecting rod which are connected with each other, a rotary core pulling groove is formed in the movable die insert, the rotary head is located in the rotary core pulling groove, a forming lug for forming the product reverse buckle is formed on the rotary head, a jacking hole is formed in the movable die, the rotary core pulling groove is communicated with the jacking hole, the connecting rod is located in the jacking hole, a first mounting groove is connected to the jacking hole, the guide block is located in the first mounting groove, the guide block is of a hollow cylindrical shape, and the guide block is sleeved on the connecting rod.
As a further optimization of the above technical solution: the guide groove further comprises a straight guide groove positioned above the inclined guide groove.
As a further optimization of the above technical solution: the ejector pin plate is internally provided with a fixed seat, a bearing groove is formed in the fixed seat, a bearing and an installation block are arranged in the bearing groove, a first screw penetrates through the installation block and is fixed to the bottom of the connecting rod, the bearing sleeve is arranged on the installation block, and the bearing is fixed to the fixed seat.
As a further optimization of the above technical solution: the middle part of the mounting block is provided with a positioning block protruding towards two sides, the mounting block is sleeved with two bearings, and the two bearings are respectively positioned on the upper side and the lower side of the positioning block and are in contact with the positioning block.
As a further optimization of the above technical solution: the top system of installation piece has the cooperation lug, the corresponding system in bottom of connecting rod has the cooperation groove, the cooperation lug card is gone into in the cooperation groove.
As a further optimization of the above technical solution: the top system of rotating head has the fixed slot, the bottom system of rotating head has the draw-in groove, the fixed slot with be connected with the fixed orifices between the draw-in groove, be equipped with the fixed block in the fixed slot, the top system of connecting rod has the installation arch, the installation arch is located in the draw-in groove, the system has fixed recess on the fixed block, be equipped with the second screw in the fixed recess, the cap head of second screw is located the tank bottom of fixed recess, the pole portion of second screw passes the fixed block the fixed hole is fixed in the installation arch, with this will the rotating head with the connecting rod is fixed.
As a further optimization of the above technical solution: and a first annular bump is further arranged at the bottom of the guide block, a third screw penetrates through the first annular bump and fixes the guide block in the movable mould, and during mould closing, the clamping block is positioned at the bottom of the inclined guide groove and is in contact with the first annular bump.
As a further optimization of the above technical solution: still be equipped with the guide pin bushing on the connecting rod, still be connected with convex second mounting groove on the ejection hole, the second mounting groove is located the below of rotatory coring groove, the top of first mounting groove, the guide pin bushing is located in the second mounting groove and with the movable mould is fixed, the connecting rod can for the guide pin bushing reciprocates.
Compared with the prior art, the rotary core-pulling block of the utility model can complete core-pulling in a rotating way while ejecting, has simple structure, simple and stable movement process, reduces the space occupied by the mechanism and reduces the cost of the mould; the die core pulling device can prevent a product from sticking a movable die insert and a rotary core pulling block, ensures stable demoulding and improves the yield of the product.
Drawings
Fig. 1 is a schematic sectional structure of the present invention.
Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.
Fig. 3 is an enlarged schematic view of the structure at B in fig. 1.
Fig. 4 is a schematic perspective view of a middle part structure of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description. As shown in fig. 1-4, the rotary ejection mechanism of the injection mold comprises a movable mold, wherein the movable mold comprises a movable mold insert 3, an ejector plate 7, a rotary core-pulling block and a guide block 4. The rotary core-pulling block comprises a rotary head 1 and a connecting rod 2 which are connected with each other, a rotary core-pulling groove 34 is formed in a movable die insert 3, the rotary head 1 is located in the rotary core-pulling groove 34, and a forming lug 10 for enabling a product to be molded in an inverted buckle mode is formed on the rotary head 1. When the die is closed, the rotating head 1 and the movable die insert 3 jointly form part of a die cavity. An ejection hole 31 is formed in the movable mould, the rotary core-pulling groove 34 is communicated with the ejection hole 31, and the connecting rod 2 is positioned in the ejection hole 31. The bottom of the connecting rod 2 is connected with the ejector plate 7 and can rotate relative to the ejector plate 7. The ejection hole 31 is connected with a first mounting groove 32, and the guide block 4 is positioned in the first mounting groove 32. The guide block 4 is hollow cylindrical, and the guide block 4 is sleeved on the connecting rod 2.
In the above technical scheme: the guide block 4 is formed with guide grooves at its side including an inclined guide groove 41 and a straight guide groove 42 above the inclined guide groove 41. The rotary core-pulling block is provided with a clamping block 8, and the end part of the clamping block 8 is positioned in the guide groove and can move up and down along the guide groove.
In the above technical scheme: a fixed seat 6 is fixed in the thimble plate 7, a bearing groove is arranged in the fixed seat 6, and a mounting block 21 and two bearings 5 are arranged in the bearing groove. The middle part of the mounting block 21 is provided with a positioning block 22 protruding towards two sides, the two bearings 5 are sleeved on the mounting block 21, and the two bearings 5 are respectively positioned at the upper side and the lower side of the positioning block 22 and are contacted with the positioning block 22. The bearing 5 is fixed with the fixed seat 6, so that the installation block 21 rotates relative to the fixed seat 6. The top of the mounting block 21 is provided with a matching projection 23, the bottom of the connecting rod 2 is correspondingly provided with a matching groove 24, and the matching projection 23 is clamped in the matching groove 24. The first screw 25 passes through the mounting block 21, the fitting projection 23 and is fixed to the bottom of the connecting rod 2. The fitting projection 23 is engaged in the fitting groove 24, and plays a role in positioning the fixing of the mounting block 21 and the connecting rod 2. In actual production, the mounting block 21 and the connecting rod 2 may be integrally formed. The utility model discloses in, connect through first screw 25 between installation piece 21 and the connecting rod 2, the convenient dismantlement makes things convenient for the change and the maintenance of part.
In the above technical scheme: the top system of rotating head 1 has fixed slot 11, the bottom system of rotating head 1 has draw-in groove 12, be connected with fixed orifices 13 between fixed slot 11 and the draw-in groove 12, be equipped with fixed block 15 in the fixed slot 11, the top system of connecting rod 2 has installation arch 26, installation arch 26 is located draw-in groove 12, the system has fixed recess 16 on the fixed block 15, be equipped with second screw 17 in the fixed recess 16, the cap head of second screw 17 is located the tank bottom of fixed recess 16, the pole portion of second screw 17 passes fixed block 15, fixed orifices 13 is fixed on installation arch 26, with this fixed rotating head 1 and connecting rod 2 are fixed. The fixing block 15 completes the fixation between the rotating head 1 and the connecting rod 2 without damaging the molding lug 10 and affecting the injection molding of the product.
In the above technical scheme: the bottom of the guide block 4 is further provided with a first annular bump 43, a third screw penetrates through the first annular bump 43 and fixes the guide block 4 in the movable mould, and when the mould is closed, the clamping block 8 is located at the bottom of the inclined guide groove 41 and is in contact with the first annular bump 43. The first annular protrusion 43 and the groove bottom of the straight guide groove 42 limit the movement of the latch 8, thereby limiting the movement of the rotary core-pulling block.
In the above technical scheme: the connecting rod 2 is also sleeved with a guide sleeve 14, and the ejection hole 31 is also connected with a second protruding installation groove 33. The second mounting groove 33 is positioned below the rotary core pulling groove 34 and above the first mounting groove 32, and the guide sleeve 14 is positioned in the second mounting groove 33. The top of the guide sleeve 14 is provided with a second annular lug 18, and a fourth screw 19 passes through the second annular lug 18 and is fixed on the movable die insert 3. The connecting rod 2 can move up and down relative to the guide sleeve 14, and the guide sleeve 14 plays a guiding role in the ejection process of the connecting rod 2.
The utility model discloses an operating process as follows, the back of finishing of moulding plastics, the separation of movable mould and cover half, ejector plate 7 drives rotatory core extraction piece and is ejecting motion. The fixture block 8 moves upwards along with the connecting rod 2, and the guide block 4 is fixed in the die insert 3 and cannot move, so that the fixture block 8 moves upwards and generates transverse displacement along the inclined guide groove 41, and the rotating head 1 rotates for a certain angle while ejecting. The rotating head 1 is ejected out and rotated simultaneously, so that the movable die insert 3 is prevented from being stuck by a product, meanwhile, the contact between the product reverse buckle and the forming convex block 10 begins to be loosened, and the reverse buckle is prevented from being stuck by the rotating head 1, so that the demoulding failure is caused. When the fixture block 8 moves to the straight guide groove 42, the rotating head 1 stops rotating, and the ejector plate 7 continues to drive the rotating head 1 to move upwards to eject the product, so that the product is completely separated from the movable die insert 3, and the rotating ejection core-pulling process is completed. The rotary core-pulling block rotates to complete core pulling while being ejected out, the structure is simple, the movement process is simplified and stable, the space occupied by the mechanism is reduced, and the mold cost is reduced; the die core pulling device can prevent a product from sticking a movable die insert and a rotary core pulling block, ensures stable demoulding and improves the yield of the product.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the principles of this invention without the use of inventive faculty. Therefore, all should fall into the protection scope of the utility model, the technical scheme that the design of this technical field technical personnel according to the utility model can be obtained through logic analysis, reasoning or limited experiment on prior art's basis, all should fall into.
Claims (9)
1. The rotary ejection mechanism of the injection mold comprises a movable mold, wherein the movable mold comprises a movable mold insert (3), and the rotary ejection mechanism is characterized in that the movable mold further comprises an ejector plate (7), a rotary core-pulling block and a guide block (4), the rotary core-pulling block is connected with the ejector plate (7) and can rotate relative to the ejector plate (7), the guide block (4) is sleeved on the rotary core-pulling block and is fixed with the movable mold, a guide groove is formed in the side surface of the guide block (4), the guide groove comprises an inclined guide groove (41), a fixture block (8) is arranged on the rotary core-pulling block, and the end part of the fixture block (8) is located in the guide groove and can move up and down along the guide groove;
when the die is closed, the top of the rotary core-pulling block and the movable die insert (3) jointly form part of a die cavity.
2. The rotary ejection mechanism of an injection mold according to claim 1, characterized in that the rotary core pulling block comprises a rotary head (1) and a connecting rod (2) which are connected with each other, a rotary core pulling groove (34) is formed in the movable mold insert (3), the rotary head (1) is located in the rotary core pulling groove (34), a forming bump (10) for forming a product in an inverted manner is formed on the rotary head (1), an ejection hole (31) is formed in the movable mold, the rotary core pulling groove (34) is communicated with the ejection hole (31), the connecting rod (2) is located in the ejection hole (31), a first mounting groove (32) is connected to the ejection hole (31), the guide block (4) is located in the first mounting groove (32), the guide block (4) is in a hollow cylindrical shape, and the guide block (4) is sleeved on the connecting rod (2).
3. The rotary ejection mechanism of an injection mold according to claim 1, wherein the guide groove further comprises a straight guide groove (42) located above the inclined guide groove (41).
4. The rotary ejection mechanism of an injection mold according to claim 2, characterized in that a fixed seat (6) is arranged in the ejector plate (7), a bearing groove is formed in the fixed seat (6), a bearing (5) and a mounting block (21) are arranged in the bearing groove, a first screw (25) passes through the mounting block (21) and is fixed at the bottom of the connecting rod (2), the bearing (5) is sleeved on the mounting block (21), and the bearing (5) is fixed with the fixed seat (6).
5. The rotary ejection mechanism of an injection mold according to claim 4, characterized in that the middle of the mounting block (21) is provided with a positioning block (22) protruding towards two sides, the mounting block (21) is sleeved with two bearings (5), and the two bearings (5) are respectively located at the upper and lower sides of the positioning block (22) and contact with the positioning block (22).
6. A rotary ejection mechanism of an injection mold according to claim 4, characterized in that the top of the mounting block (21) is provided with a matching projection (23), the bottom of the connecting rod (2) is correspondingly provided with a matching groove (24), and the matching projection (23) is clamped into the matching groove (24).
7. The rotary ejection mechanism of an injection mold according to claim 2, wherein a fixing groove (11) is formed at the top of the rotary head (1), a clamping groove (12) is formed at the bottom of the rotary head (1), a fixing hole (13) is connected between the fixing groove (11) and the clamping groove (12), a fixing block (15) is arranged in the fixing groove (11), a mounting protrusion (26) is formed at the top of the connecting rod (2), the mounting protrusion (26) is located in the clamping groove (12), a fixing groove (16) is formed in the fixing block (15), a second screw (17) is arranged in the fixing groove (16), a cap head of the second screw (17) is located at the bottom of the fixing groove (16), and a rod part of the second screw (17) penetrates through the fixing block (15) and the fixing hole (13) and is fixed on the mounting protrusion (26), so as to fix the rotary head (1) and the connecting rod (2).
8. The rotary ejection mechanism of an injection mold according to claim 1, wherein the bottom of the guide block (4) is further provided with a first annular projection (43), a third screw passes through the first annular projection (43) and fixes the guide block (4) in the movable mold, and when the movable mold is closed, the clamping block (8) is located at the bottom of the inclined guide groove (41) and contacts with the first annular projection (43).
9. The rotary ejection mechanism of the injection mold according to claim 2, wherein the connecting rod (2) is further sleeved with a guide sleeve (14), the ejection hole (31) is further connected with a second mounting groove (33) which protrudes, the second mounting groove (33) is located below the rotary core-pulling groove (34) and above the first mounting groove (32), the guide sleeve (14) is located in the second mounting groove (33) and fixed to the movable mold, and the connecting rod (2) can move up and down relative to the guide sleeve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220657929.1U CN217803133U (en) | 2022-03-23 | 2022-03-23 | Rotary ejection mechanism of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220657929.1U CN217803133U (en) | 2022-03-23 | 2022-03-23 | Rotary ejection mechanism of injection mold |
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| Publication Number | Publication Date |
|---|---|
| CN217803133U true CN217803133U (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220657929.1U Active CN217803133U (en) | 2022-03-23 | 2022-03-23 | Rotary ejection mechanism of injection mold |
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| CN (1) | CN217803133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670403A (en) * | 2022-03-23 | 2022-06-28 | 浙江台州美多模具有限公司 | Rotary ejection mechanism of injection mold |
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2022
- 2022-03-23 CN CN202220657929.1U patent/CN217803133U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670403A (en) * | 2022-03-23 | 2022-06-28 | 浙江台州美多模具有限公司 | Rotary ejection mechanism of injection mold |
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