CN223998893U - Secondary forced-release nut insert injection molding structure - Google Patents
Secondary forced-release nut insert injection molding structureInfo
- Publication number
- CN223998893U CN223998893U CN202520420635.0U CN202520420635U CN223998893U CN 223998893 U CN223998893 U CN 223998893U CN 202520420635 U CN202520420635 U CN 202520420635U CN 223998893 U CN223998893 U CN 223998893U
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- Prior art keywords
- plate
- injection molding
- roof
- top plate
- nut insert
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Abstract
The utility model relates to a secondary takes off by force and adds nut inserts injection moulding structure, including last die body and lower die body, the last die body includes fixed plate, hot runner board, fixed die plate, the lower die body includes fixed plate, two mould feet, first roof, second roof, movable mould board down, first roof and second roof slip connect between movable mould board and fixed plate down, slip on the movable mould board is connected with the core that is used for shaping rearview mirror body, first roof slip is connected with the kicking block, be equipped with many spliced poles on the kicking block, many the spliced pole all passes second roof, movable mould board and is connected with the core, still be equipped with the drive portion that is used for driving the kicking block to slide on the fixed plate down, be equipped with many thimble on the second roof, many thimble all pass the movable mould board and stretch into the core, the slip stroke of kicking block is less than the slip stroke of first roof and second roof. The utility model discloses can guarantee the smooth drawing of patterns of rear-view mirror body.
Description
Technical Field
The utility model relates to the field of dies, in particular to a secondary forced-release nut insert injection molding structure.
Background
An automobile rearview mirror as shown in fig. 8 and 9 comprises a rearview mirror body 7, wherein the edge of the rearview mirror body 7 is bent towards the center direction of the rearview mirror body 7 to form an assembling edge 71, and two nut inserts 72 are arranged on the rearview mirror body 7.
The back-off structure is formed between the assembly edge 71 and the mold after the injection molding of the automobile rearview mirror body 7, so that the molded rearview mirror body 7 is prevented from being separated from the mold, and therefore, the problem of smooth demolding of the injection molding of the rearview mirror body 7 is solved after the injection molding of the rearview mirror body 7.
Disclosure of utility model
The application provides a secondary forced demoulding nut insert injection molding structure which can ensure the smooth demoulding of a rearview mirror body.
The application provides a secondary forced-release nut insert injection molding structure, which adopts the following technical scheme:
The utility model provides a secondary is taken off by force and is added nut inserts injection moulding structure, includes die body and lower die body, the die body includes fixed plate, hot runner board, fixed die plate, the die body includes fixed plate, two mould feet down, first roof, second roof, movable mould board down, first roof and second roof slip connect between movable mould board and fixed plate down, slip on the movable mould board is connected with the core that is used for shaping the rear-view mirror body, first roof slip is connected with the kicking block, be equipped with many spliced poles on the kicking block, many the spliced pole all passes second roof, movable mould board and is connected with the core, still be equipped with the drive portion that is used for driving the kicking block to slide on the fixed plate down, be equipped with many thimble on the second roof, many thimble all pass the movable mould board and stretch into the core, the slip stroke of kicking block is less than the slip stroke of first roof and second roof.
Through adopting above-mentioned technical scheme, after rear-view mirror body injection moulding and mould die sinking, injection molding machine and control first roof and second roof slide towards the movable mould board, and drive portion then drives the kicking block and slides together synchronous with first roof, and kicking block and second roof slip in-process core can move away from the movable mould board thereby with rear-view mirror body ejecting movable mould board, thereby the movable mould board can not hinder the deformation of rear-view mirror body. The follow-up kicking block stops sliding, and first roof and second roof then can continue sliding, can drive the thimble when second roof continues sliding with the ejecting core of rear-view mirror body, thereby the rear-view mirror body can expand deformation outward by its assembly limit when being jacked up by the thimble and remove the back-off structure with the core and make the rear-view mirror body take out of the mould smoothly.
Preferably, the driving part comprises a first spring arranged on the lower fixing plate and a matching groove arranged on the ejector block, one end, far away from the lower fixing plate, of the first spring stretches into the matching groove, and the ejector block is propped against the first top plate by the first spring.
Through adopting above-mentioned technical scheme, the ejector pad also can follow first roof and move together under the elasticity effect of first spring when first roof moves towards the movable mould board, and when follow-up first spring no longer driven ejector pad motion, first roof still can continue to move a distance and make the thimble with rear-view mirror body ejecting core. And when the first top plate is reset, the first spring is stressed to compress.
Preferably, the lower fixing plate is provided with a guide rod, the groove wall of the matching groove far away from the lower fixing plate is provided with a threaded hole, the guide rod penetrates through the matching groove and is in threaded fit with the threaded hole, and the first spring is sleeved on the guide rod.
By adopting the technical scheme, the elastic force of the first spring can be effectively acted on the top block.
Preferably, two magnets and two positioning iron columns are arranged in the mold core, one positioning iron column is in contact with one magnet, and the positioning iron column is used for placing a nut insert.
Through adopting above-mentioned technical scheme, establish the nut inserts cover to two location iron poles before the mould compound die is moulded plastics, the magnetic force of two magnets can be conducted to two location iron poles on making two location iron poles adsorb two nut inserts, the dropping of nut inserts when the prevention mould compound die.
Preferably, two copper sleeves are arranged in the mold core, one magnet and the positioning iron column which are in contact with each other are arranged in the same copper sleeve, and the positioning iron column extends out of the copper sleeve.
Through adopting above-mentioned technical scheme, the setting of copper sheathing can separate the contact of magnet and core, prevents that the magnetic force of magnet from passing on the core.
Preferably, the copper sleeve comprises a sleeve body I, a placing cavity formed in the sleeve body I, and a copper plug for plugging the placing cavity, wherein the magnet and the positioning iron column are arranged in the placing cavity, and the copper plug props the magnet and the positioning iron column in the placing cavity.
Through adopting above-mentioned technical scheme, conveniently place magnet and location iron prop.
Preferably, the fixed die plate is provided with a pressing needle, and the pressing needle is used for propping the nut insert against the positioning iron column when the die is closed.
Through adopting above-mentioned technical scheme for prevent the removal of nut inserts when the injection moulding of sight glass body, guarantee the accuracy of nut inserts placement position.
The technical effects of the utility model are mainly as follows:
1. The utility model can ensure the smooth demoulding of the rearview mirror body;
2. According to the utility model, the nut insert is effectively placed and adsorbed through the matching of the magnet and the positioning iron column, so that the nut insert is prevented from falling off when the die is assembled;
3. The copper sleeve is arranged to block the contact between the magnet and the mold core, so that the magnetic force of the magnet is prevented from being transmitted to the mold core.
Drawings
Fig. 1 is a schematic structural view of the mold of the present application.
Fig. 2 is a schematic view of the structure of the lower mold body and a rear view mirror body.
Fig. 3 is a cross-sectional view of the lower mold body and the mirror body of fig. 2 taken along line A-A.
Fig. 4 is a cross-sectional view of the lower mold body and the mirror body of fig. 2 taken along line B-B.
Fig. 5 is a partial enlarged view at C in fig. 4.
Fig. 6 is a cross-sectional view of the mold of fig. 1 taken along line D-D.
Fig. 7 is a partial enlarged view at E in fig. 6.
Fig. 8 is a schematic structural view of the rear view mirror body.
Fig. 9 is a cross-sectional view of the mirror body of fig. 8 taken along line F-F.
The numerical control device comprises the following components of 1, an upper die body, 11, an upper fixing plate, 12, a hot runner plate, 13, a fixed die plate, 131, a pressing pin, 2, a lower die body, 21, a lower fixing plate, 211, a guide rod, 22, a die leg, 23, a first top plate, 24, a second top plate, 241, a thimble, 25, a movable die plate, 26, a guide pillar, 27, a second spring, 3, a core, 31, a magnet, 32, a positioning iron pillar, 4, a top block, 41, a connecting pillar, 42, a threaded hole, 5, a driving part, 51, a first spring, 52, a matching groove, 6, a copper sleeve, 61, a first sleeve, 62, a placing cavity, 63, a copper plug, 7, a rearview mirror body, 71, an assembling edge, 72 and a nut insert.
Detailed Description
The present application will be further described in detail below with reference to the accompanying drawings, so that the technical solution of the present application can be more easily understood and grasped.
Referring to fig. 1-3, a secondary forced-release nut insert 72 injection molding structure of the present embodiment includes an upper mold body 1 and a lower mold body 2, wherein the upper mold body 1 includes an upper fixing plate 11, a hot runner plate 12, and a fixed mold plate 13, which are connected to each other. The lower die body 2 comprises a lower fixed plate 21, two die legs 22, a first top plate 23, a second top plate 24 and a movable die plate 25. A plurality of guide posts 26 are fixed between the lower fixed plate 21 and the movable die plate 25, the first top plate 23 and the second top plate 24 are slidably connected to the plurality of guide posts 26 along the die opening direction of the die, and the first top plate 23 is located at one side of the second top plate 24 close to the lower fixed plate 21. The plurality of second springs 27 are respectively sleeved on the plurality of guide posts 26, and the plurality of second springs 27 press the first top plate 23 and the second top plate 24 against the lower fixing plate 21.
Referring to fig. 2 and 4, two cores 3 for forming the rearview mirror body 7 are slidably connected to the movable mold plate 25, two top blocks 4 are slidably connected to the first top plate 23, a plurality of connecting columns 41 are disposed on each top block 4, and a plurality of connecting columns 41 on one top block 4 pass through the second top plate 24 and the movable mold plate 25 and are connected to one core 3.
Referring to fig. 4 and 5, the lower fixing plate 21 is further provided with a plurality of driving parts 5 for driving the top block 4 to slide. The driving part 5 comprises a first spring 51 arranged on the lower fixing plate 21 and a matching groove 52 arranged on the top block 4, one end, far away from the lower fixing plate 21, of the first spring 51 stretches into the matching groove 52, and the first spring 51 presses the top block 4 against the first top plate 23. The second top plate 24 is provided with a plurality of ejector pins 241, and the ejector pins 241 penetrate through the movable mould plate 25 and extend into the two cores 3, wherein the sliding stroke of the ejector block 4 is smaller than that of the first top plate 23 and the second top plate 24.
Referring to fig. 5, a plurality of guide rods 211 are fixed on the lower fixing plate 21, threaded holes 42 are formed in the walls of the plurality of engagement grooves 52 far from the lower fixing plate 21, the plurality of guide rods 211 penetrate through the plurality of engagement grooves 52 and are respectively in threaded engagement with the plurality of threaded holes 42, and a plurality of springs are sleeved on the guide rods 211.
Referring to fig. 1, 6 and 7, two copper sleeves 6 are arranged in one core 3, wherein each copper sleeve 6 comprises a sleeve body 61, a placing cavity 62 formed on the sleeve body 61, and a copper plug 63 for plugging the placing cavity 62. The placing cavity 62 is provided with a magnet 31 and a positioning iron column 32, wherein the positioning iron column 32 is contacted with the magnet 31, the positioning iron column 32 extends out of the first sleeve 61, and the positioning iron column 32 is used for placing the nut insert 72. Copper plugs 63 press magnet 31 and positioning iron columns 32 against placement cavity 62. Four pressing pins 131 are arranged on the fixed die plate 13, and the pressing pins 131 are used for pressing the nut inserts 72 against the positioning iron columns 32 when the die is closed.
Referring to fig. 1-7, the injection molding operation of the present application for its structural integrity is as follows:
Firstly, an operator of the injection molding machine sleeves four nut inserts 72 on four positioning iron columns 32, then the injection molding machine is operated to enable the upper die body 1 and the lower die body 2 to be assembled, and after the upper die body 1 and the lower die body 2 are assembled, four pressing pins 131 press the four nut inserts 72 on the four positioning iron columns 32.
Then the injection molding machine injects hot melt plastics into the mold to complete the injection molding of the rearview mirror body 7, and after the injection molding of the rearview mirror body 7, the injection molding machine controls the lower mold body 2 and the upper mold body 1 to open and separate. The ejector pins of the injection molding machine then push the first top plate 23 and the second top plate 24 so that the first top plate 23 and the second top plate 24 move toward the movable mold plate 25, and the plurality of second springs 27 are compressed under force.
The top block 4 also moves together with the first top plate 23 under the elastic force of the first spring 51 when the first top plate 23 moves toward the movable die plate 25. The core 3 moves away from the movable mold plate 25 under the guidance of the plurality of connecting posts 41 during the sliding process of the ejector block 4 and the second top plate 24, so that the movable mold plate 25 ejects the rear view mirror body 7 out of the movable mold plate 25, and the movable mold plate 25 does not obstruct the deformation of the rear view mirror body 7.
The follow-up ejector block 4 stops sliding after moving a certain distance, the first top plate 23 and the second top plate 24 continue sliding, the ejector pin 241 is driven to eject the rear view mirror body 7 out of the mold core 3 when the second top plate 24 continues sliding, and the assembly edge 71 of the rear view mirror body 7 is outwards expanded and deformed when the ejector pin 241 is ejected up, so that the back-off structure of the rear view mirror body 7 and the mold core 3 is released, and the rear view mirror body 7 is smoothly demolded.
After the two rearview mirror bodies 7 are smoothly demoulded, the ejector rods of the injection molding machine retract, the first top plate 23 and the second top plate 24 can move and reset under the action of resilience force of the second springs 27, and the ejector rods can also move and reset in the process of moving and resetting the second top plate 24. During the movement and resetting of the first top plate 23, the pressing top block 4 is moved and reset, the mold core 3 is moved and reset, and the first springs 51 are compressed under stress, so that preparation is made for injection molding of the next set of rearview mirror bodies 7.
Of course, the above is only a typical example of the application, and other embodiments of the application are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the application claimed.
Claims (7)
1. The secondary forced-release nut insert injection molding structure comprises an upper mold body (1) and a lower mold body (2), wherein the upper mold body (1) comprises an upper fixing plate (11), a hot runner plate (12) and a fixed mold plate (13), the lower mold body (2) comprises a lower fixing plate (21), two mold legs (22), a first top plate (23), a second top plate (24) and a movable mold plate (25), the first top plate (23) and the second top plate (24) are slidably connected between the movable mold plate (25) and the lower fixing plate (21), the secondary forced-release nut insert injection molding structure is characterized in that a core (3) used for molding a rearview mirror body (7) is slidably connected on the first top plate (25), a plurality of connecting columns (41) are arranged on the top block (4), the connecting columns (41) penetrate through the second top plate (24) and the movable mold plate (25) and are connected with the movable mold plate (3), a plurality of ejector pins (241) are further arranged on the lower fixing plate (21) and are slidably connected with the first top plate (25) and are provided with a plurality of ejector pins (241) which penetrate through the second top plate (24), the sliding travel of the top block (4) is smaller than the sliding travel of the first top plate (23) and the second top plate (24).
2. The secondary forced release nut insert injection molding structure according to claim 1, wherein the driving part (5) comprises a first spring (51) arranged on the lower fixing plate (21) and a matching groove (52) formed on the top block (4), one end, far away from the lower fixing plate (21), of the first spring (51) stretches into the matching groove (52), and the first spring (51) presses the top block (4) against the first top plate (23).
3. The secondary forced-release nut insert injection molding structure according to claim 2, wherein the lower fixing plate (21) is provided with a guide rod (211), the groove wall of the matching groove (52) far away from the lower fixing plate (21) is provided with a threaded hole (42), the guide rod (211) passes through the matching groove (52) and is in threaded fit with the threaded hole (42), and the first spring (51) is sleeved on the guide rod (211).
4. The secondary forced release nut insert injection molding structure according to claim 1, wherein two magnets (31) and two positioning iron columns (32) are arranged in the core (3), one positioning iron column (32) is contacted with one magnet (31), and the positioning iron column (32) is used for placing a nut insert (72).
5. The secondary forced release nut insert injection molding structure according to claim 4, wherein two copper sleeves (6) are arranged in the core (3), one magnet (31) and a positioning iron column (32) which are in contact with each other are arranged in the same copper sleeve (6), and the positioning iron column (32) extends out of the copper sleeve (6).
6. The secondary forced release nut insert injection molding structure according to claim 5, wherein the copper sleeve (6) comprises a sleeve body I (61), a placing cavity (62) formed in the sleeve body I (61), and a copper plug (63) for blocking the placing cavity (62), the magnet (31) and the positioning iron column (32) are arranged in the placing cavity (62), and the copper plug (63) presses the magnet (31) and the positioning iron column (32) against the placing cavity (62).
7. The secondary forced release nut insert injection molding structure according to claim 4, wherein the fixed die plate (13) is provided with a pressing needle (131), and the pressing needle (131) is used for pressing the nut insert (72) against the positioning iron column (32) when the die is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520420635.0U CN223998893U (en) | 2025-03-11 | 2025-03-11 | Secondary forced-release nut insert injection molding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520420635.0U CN223998893U (en) | 2025-03-11 | 2025-03-11 | Secondary forced-release nut insert injection molding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223998893U true CN223998893U (en) | 2026-03-17 |
Family
ID=99042654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520420635.0U Active CN223998893U (en) | 2025-03-11 | 2025-03-11 | Secondary forced-release nut insert injection molding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223998893U (en) |
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2025
- 2025-03-11 CN CN202520420635.0U patent/CN223998893U/en active Active
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