CN219405261U - Female die core-pulling mechanism of multi-cavity material reducing head - Google Patents
Female die core-pulling mechanism of multi-cavity material reducing head Download PDFInfo
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- CN219405261U CN219405261U CN202320626658.8U CN202320626658U CN219405261U CN 219405261 U CN219405261 U CN 219405261U CN 202320626658 U CN202320626658 U CN 202320626658U CN 219405261 U CN219405261 U CN 219405261U
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- female die
- pin insert
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Abstract
The utility model relates to a female die core pulling mechanism of a multi-cavity reducing head, which comprises a female die base plate, a female die plate, a core guide block, a side guide block and an inclined pin insert; the female die base plate and the female die plate are arranged in a stacked mode, the core guide blocks and the side guide blocks are located in through grooves in the female die plate, and the side guide blocks are symmetrically arranged on two sides of the core guide blocks; a core positioning seat is arranged between the core guide block and the side guide block; the oblique pin insert is positioned in the oblique sliding grooves on the core guide block and the side guide block, and the top of the oblique pin insert is movably connected with the female die base plate through a spring; the inclined pin insert comprises a block body and a lower limiting part, and a cavity part is arranged on the side face of the lower limiting part. The female die core-pulling mechanism is designed, the volume of the core-pulling mechanism is reduced, the large pulling of an injection molding gap of a product is avoided, the multi-cavity injection molding of a single die is ensured, the waste of a material head is reduced, the size of the die can be reduced, the requirement on the tonnage of a machine is reduced, and the injection molding precision is improved.
Description
Technical Field
The utility model relates to a die structure, in particular to a female die core-pulling mechanism of a multi-cavity material reducing head.
Background
As shown in FIG. 8, the injection molding product is fine, but has high appearance requirement and a back-off structure.
Because of the smaller size of injection molded products, the molds are often designed for multiple cavities, typically 64 cavities, to increase production efficiency.
Because the bottom end of the injection molding product is U-shaped and the upper part of the injection molding product is provided with a back-off structure, core pulling is needed during mold opening.
The prior art is as follows: 202220616660.2, bulletin number: CN217047367U, a chinese patent for utility model entitled "one-mold multi-cavity multi-directional injection mold"), describes the following technical scheme: the multi-directional demolding injection mold comprises a panel and a bottom plate, wherein a movable mold plate and a fixed mold plate are sequentially arranged above the bottom plate from bottom to top, a movable mold core is arranged inside the movable mold plate, a movable mold main insert is arranged on the movable mold core, a plastic part is placed on the movable mold main insert, a movable mold direct core pulling mechanism is arranged at the lower end of the movable mold core, an auxiliary ejection column is arranged in the movable mold direct core pulling mechanism, and a movable mold side pushing mechanism is arranged at the lower side end of the movable mold core; the inside of the fixed template is provided with a fixed die core, the side end of the fixed die core is provided with a slide piece, and the slide piece is in sliding connection with the shovel machine.
According to the scheme, the fixed die plate is obliquely pulled by the shovel machine, the movable die plate is mechanically pulled to loose core, and then the movable die side pushing mechanism is used for pushing the plastic part, so that smooth demolding and part taking are realized.
According to the conventional slide block core pulling structure, although core pulling operation can be achieved, a product gap needs to be pulled far so as to facilitate the slide block to move, so that the size of a die becomes large, and the tonnage of a required machine is higher.
For the injection molding products with small sizes, the precision of the high-tonnage machine table cannot be achieved, and the yield of the products cannot be guaranteed. In addition, the space between injection molding products is increased, the required runner is lengthened and thickened, so that a plurality of plastic materials are wasted on the runner, the injection molding pressure of a machine is increased due to the overlong runner, and the full-cavity OK of 64-cavity products is more difficult.
Disclosure of Invention
The purpose of the utility model is that:
the female die core-pulling mechanism with the multiple cavities for reducing the material head is designed, the female die core-pulling mechanism is designed originally, the size of the core-pulling mechanism is reduced, the product injection molding gap is prevented from being pulled larger, the single die is ensured to be subjected to multi-cavity injection molding, the material head waste is reduced, the size of the die can be reduced, the requirement on the tonnage of a machine is reduced, and the injection molding precision is improved.
In order to achieve the above object, the present utility model provides the following technical solutions:
a female die core-pulling mechanism of a multi-cavity reducing head comprises a female die base plate, a female die plate, a core guide block, a side guide block and an oblique pin insert; the female die base plate and the female die plate are arranged in a stacked mode, the core guide blocks and the side guide blocks are located in through grooves in the female die plate, and the side guide blocks are symmetrically arranged on two sides of the core guide blocks; a core positioning seat is arranged between the core guide block and the side guide block; the oblique pin insert is positioned in the oblique sliding grooves on the core guide block and the side guide block, and the top of the oblique pin insert is movably connected with the female die base plate through a spring; the inclined pin insert comprises a block body and a lower limiting part, and a cavity part is arranged on the side surface of the lower limiting part; the cavity positions of the taper pin inserts positioned at the two sides of the core positioning seat correspond to each other.
Further, the core guide block, the side guide block and the core positioning seat are all clamped with the master die plate.
Further, the taper pin insert further comprises a taper guide bar and an upper limit part; the oblique guide strip of the oblique pin insert positioned in the core guide block is movably arranged in the oblique guide chute on the core guide block, and the oblique guide strip of the oblique pin insert positioned on the side guide block is movably arranged in the oblique guide chute on the side guide block; the upper inclined guide sliding grooves of the core guide blocks and the side guide blocks are arranged in a splayed shape relative to the core positioning seat.
Further, the upper limit part and the lower limit part are respectively positioned at the top and the bottom of the block; the upper limit part of the taper pin insert in the core guide block is positioned in the limit chute of the core guide block; the upper limit part of the taper pin insert in the side guide block is positioned in the limit chute of the side guide block.
Further, the lower limiting part is specifically located on the side face of the bottom of the block body, and the lower limiting part is in contact with the bottom of the core positioning seat.
Further, the top of the spring is positioned in a spring hole on the master die backing plate, and the bottom of the spring is contacted with the top end of the taper pin insert; the spring is in particular a spiral spring and its central axis is parallel to the diagonal guide bar.
The beneficial effects of the utility model are as follows:
the female die core-pulling mechanism of the multi-cavity reducing head is designed originally, and compared with the conventional core-pulling mechanism, the female die core-pulling mechanism has the advantages that the size can be obviously reduced by utilizing the cooperation of a core guide block, a side guide block, an inclined pin insert, a spring and a core positioning seat, and the product injection gap is prevented from being pulled open to be larger, so that multi-cavity injection of a single die is ensured; the length of the runner is shortened, so that the waste of the material head is reduced, the size of the die can be reduced, the requirement on the tonnage of a machine is reduced, the injection molding precision is improved, and the yield of the multi-cavity injection molding product is ensured.
Drawings
FIG. 1 is a schematic view of a female mold core-pulling mechanism of a multi-cavity reducing head according to the present utility model.
FIG. 2 is a schematic diagram of the bottom structure of a female mold core-pulling mechanism of a multi-cavity reducing head according to the present utility model.
FIG. 3 is a schematic view of a portion of a master core pulling mechanism with multiple cavity reducing heads according to the present utility model.
FIG. 4 is a schematic view showing a combination of a core block, a side block and a taper pin insert of a master core pulling mechanism of a multi-cavity reducing head according to the present utility model.
Fig. 5 is a schematic diagram of a side view from below of the structure shown in fig. 4.
FIG. 6 is a schematic view of an oblique pin insert of a female mold core pulling mechanism of a multi-cavity reducing head of the present utility model.
FIG. 7 is a schematic diagram showing a combination of core blocks and side blocks of a master mold core-pulling mechanism with multiple-cavity reducing heads according to the present utility model.
FIG. 8 is a block diagram of an injection molded product injection molded by a master core pulling mechanism of a multi-cavity reduced head according to the present utility model.
Reference numerals for components in the drawings:
1. a master die pad; 2. a master template; 3. a core guide block; 30. an inclined chute; 31. oblique guiding chute; 32. limiting sliding grooves; 4. a side guide block; 5. a taper pin insert; 51. a block; 52. an oblique guide bar; 53. a lower limit part; 54. an upper limit part; 55. a cavity portion; 6. a spring; 7. a core positioning seat; 8. and (5) injection molding of a product.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the detailed description and related preferred, examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1 to 8, a female die core pulling mechanism of a multi-cavity reducing head comprises a female die backing plate 1, a female die plate 2, a core guide block 3, a side guide block 4 and an inclined pin insert 5; the female die backing plate 1 and the female die plate 2 are arranged in a lamination mode, the core guide block 3 and the side guide block 4 are positioned in a through groove on the female die plate 2, the side guide blocks 4 are symmetrically arranged on two sides of the core guide block 3, and one core guide block 3 corresponds to two side guide blocks 4; a core positioning seat 7 is arranged between the core guide block 3 and the side guide block 4, and the core positioning seat 7 is used for positioning; the oblique pin insert 5 is positioned in the oblique sliding groove 30 on the core guide block 3 and the side guide block 4, the oblique pin insert 5 can slide along the oblique sliding groove 30, the top of the oblique pin insert 5 is movably connected with the female die base plate 1 through a spring 6, and the spring 6 drives the oblique pin insert 5 to act through elasticity; the taper pin insert 5 comprises a block 51 and a lower limit part 53, a cavity part 55 is arranged on the side surface of the lower limit part 53, and the cavity part 55 participates in the molding of an inverted buckle structure at the upper part of the injection molding product 8; the cavity parts 55 of the taper pin inserts 5 positioned on the two sides of the core positioning seat 7 correspond in position, and injection molding of the upper structure of the injection molding product 8 is achieved.
The core guide block 3, the side guide block 4 and the core positioning seat 7 are clamped with the master template 2, namely, the core guide block 3, the side guide block 4 and the core positioning seat 7 are fixed relative to the master template 2.
The angle pin insert 5 further comprises an angle guide bar 52 and an upper limit 54; the inclined guide strip 52 of the inclined pin insert 5 positioned in the core guide block 3 is movably arranged in the inclined guide chute 31 on the core guide block 3, namely, the inclined pin insert 5 can slide along the inclined guide chute 31 on the core guide block 3, and the inclined guide strip 52 of the inclined pin insert 5 positioned on the side guide block 4 is movably arranged in the inclined guide chute 31 on the side guide block 4, namely, the inclined pin insert 5 can slide along the inclined guide chute 31 on the side guide block 4; the oblique guide sliding grooves 31 on the core guide block 3 and the side guide block 4 are arranged in a splayed shape relative to the core positioning seat 7, so that the two oblique pin inserts 5 move downwards and are separated in time phase, and blanking is realized.
The upper limit part 54 and the lower limit part 53 are respectively positioned at the top and the bottom of the block 51; the upper limit part 54 of the taper pin insert 5 positioned in the core guide block 3 is positioned in the limit chute 32 of the core guide block 3, and the limit chute 32 is used for limiting the downward movement travel of the taper pin insert 5; the upper limit portion 54 of the taper pin insert 5 located in the side guide block 4 is located in the limit chute 32 of the side guide block 4, and the limit chute 32 is used for limiting the downward movement travel of the taper pin insert 5.
The lower limiting part 53 is specifically located on the bottom side of the block 51, and the lower limiting part 53 contacts with the bottom of the core positioning seat 7, and the core positioning seat 7 positions the top end of the lower limiting part 53.
The top of the spring 6 is positioned in a spring hole on the female die backing plate 1, the bottom of the spring is contacted with the top end of the taper pin insert 5, and the spring hole is used for accommodating the spring 6; the spring 6 is in particular a spiral spring and its central axis is parallel to the oblique guide strip 52, ensuring that the spring force direction of the spring 6 coincides with the sliding direction of the oblique pin insert 5.
The working principle of the utility model is as follows:
after injection molding and cooling are completed, the injection molding machine drives the male mold part and the female mold part of the mold to be separated, and the female die backing plate 1 and the female die plate 2 synchronously move and are separated relative to the male mold part.
When the female template 2 is separated from the male template, under the action of the elasticity of the spring 6, the inclined pin inserts 5 positioned in the core guide block 3 and the side guide block 4 slide downwards; the inclined guide strips 52 of the inclined pin inserts 5 slide downwards along the inclined guide sliding grooves 31, the two inclined pin inserts 5 corresponding to the two sides of the same core positioning seat 7 slide downwards towards the sides of the core guide block 3, and the lower limit parts 53 of the two inclined pin inserts 5 are separated relatively, so that demolding and blanking of the injection molding product 8 in the cavity part 55 are realized.
The above examples are provided to further illustrate the utility model and do not limit the utility model to these specific embodiments. Any modification, equivalent replacement, improvement, and extension etc. made within the spirit and principle described in the present utility model should be construed as being within the protection scope of the present utility model.
Claims (6)
1. A female die core-pulling mechanism of a multi-cavity reducing head is characterized in that: comprises a female die backing plate (1), a female die plate (2), a core guide block (3), a side guide block (4) and an inclined pin insert (5); the female die backing plate (1) and the female die plate (2) are arranged in a stacked mode, the core guide blocks (3) and the side guide blocks (4) are located in through grooves on the female die plate (2), and the side guide blocks (4) are symmetrically arranged on two sides of the core guide blocks (3); a core positioning seat (7) is arranged between the core guide block (3) and the side guide block (4); the oblique pin insert (5) is positioned in an oblique chute (30) on the core guide block (3) and the side guide block (4), and the top of the oblique pin insert (5) is movably connected with the female die base plate (1) through a spring (6); the inclined pin insert (5) comprises a block body (51) and a lower limiting part (53), and a cavity part (55) is arranged on the side surface of the lower limiting part (53); the cavity parts (55) of the taper pin inserts (5) positioned at the two sides of the core positioning seat (7) correspond to each other.
2. The master mold core pulling mechanism of the multi-cavity reducing head according to claim 1, wherein: the core guide blocks (3), the side guide blocks (4) and the core positioning seat (7) are all clamped with the female die plate (2).
3. The master mold core pulling mechanism of the multi-cavity reducing head according to claim 2, wherein: the oblique pin insert (5) further comprises an oblique guide strip (52) and an upper limit part (54); the inclined guide strip (52) of the inclined pin insert (5) positioned in the core guide block (3) is movably arranged in the inclined guide chute (31) on the core guide block (3), and the inclined guide strip (52) of the inclined pin insert (5) positioned on the side guide block (4) is movably arranged in the inclined guide chute (31) on the side guide block (4); the upper inclined guide sliding grooves (31) of the core guide blocks (3) and the side guide blocks (4) are arranged in a splayed shape relative to the core positioning seat (7).
4. A master core pulling mechanism of a multi-cavity reducing head according to claim 3, wherein: the upper limit part (54) and the lower limit part (53) are respectively positioned at the top and the bottom of the block body (51); the upper limit part (54) of the taper pin insert (5) positioned in the core guide block (3) is positioned in the limit chute (32) of the core guide block (3); the upper limit part (54) of the taper pin insert (5) positioned in the side guide block (4) is positioned in the limit chute (32) of the side guide block (4).
5. The master mold core pulling mechanism of the multi-cavity reducing head as defined in claim 4, wherein: the lower limiting part (53) is specifically positioned on the side surface of the bottom of the block body (51), and the lower limiting part (53) is contacted with the bottom of the core positioning seat (7).
6. The master mold core pulling mechanism of the multi-cavity reducing head as defined in claim 5, wherein: the top of the spring (6) is positioned in a spring hole on the female die backing plate (1), and the bottom of the spring is contacted with the top end of the inclined pin insert (5); the spring (6) is in particular a spiral spring and its central axis is parallel to the oblique guide strip (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320626658.8U CN219405261U (en) | 2023-03-28 | 2023-03-28 | Female die core-pulling mechanism of multi-cavity material reducing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320626658.8U CN219405261U (en) | 2023-03-28 | 2023-03-28 | Female die core-pulling mechanism of multi-cavity material reducing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219405261U true CN219405261U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320626658.8U Active CN219405261U (en) | 2023-03-28 | 2023-03-28 | Female die core-pulling mechanism of multi-cavity material reducing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219405261U (en) |
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2023
- 2023-03-28 CN CN202320626658.8U patent/CN219405261U/en active Active
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