CN110450363B - Injection mold with step-by-step demolding structure - Google Patents
Injection mold with step-by-step demolding structure Download PDFInfo
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- CN110450363B CN110450363B CN201910751663.XA CN201910751663A CN110450363B CN 110450363 B CN110450363 B CN 110450363B CN 201910751663 A CN201910751663 A CN 201910751663A CN 110450363 B CN110450363 B CN 110450363B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an injection mold with a step-by-step demolding structure, which comprises an upper mold (1) and a lower mold (2), wherein an inclined guide post (3) is arranged on the upper mold (1), and a sliding block (4), a first insert (5), a second insert (6) and a third insert (7) are arranged on the lower mold (2); the mold opening has two-step states: in the first step of mold opening, the first insert (5) faces downwards along a sliding surface, and the convex strip (5.2) moves downwards to the bottommost part of a support column (102) of a product (101); and in the second step of die opening, the upper die (1) and the inclined guide post (3) ascend upwards by a distance D2 and are separated from the sliding block (4), and the sliding block (4) drives the first insert (5), the second insert (6), the third insert (7) and the ejector block (8) to be away from the formed product (101). The mould adopts two-step demoulding, has simple structure, can realize normal demoulding, and has good reliability and stability.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection mold with a step-by-step demolding structure.
Background
At present, a support for mounting a fog lamp on an automobile is provided, and a support column is arranged on the inner side of the edge of the support and extends along the center of the support. Because the direction of the supporting column is just opposite to the direction of opening the upper die, if the sliding block and the inclined guide column of the conventional injection mold are adopted to perform two-step demolding firstly, normal demolding cannot be performed. If demolding must be accomplished, many parts must be added to accomplish this, which can complicate the mold and reduce reliability and stability.
Disclosure of Invention
The invention aims to solve the technical problem of providing the injection mold with the step-by-step demolding structure, which adopts two-step demolding, has a simple structure, can realize normal demolding and has good reliability and stability.
The technical scheme of the invention is that the injection mold with the step-by-step demolding structure comprises an upper mold and a lower mold, the upper die is provided with an inclined guide post, the lower die is provided with a slide block, a first insert, a second insert and a third insert, the slide block is connected with the lower die in a sliding way, the joint of the slide block and the lower die is a first sliding surface, the first insert, the second insert and the third insert are positioned on the side surface of the slide block from top to bottom and are used as a part of a cavity of a molded product, the side surface of the first insert is provided with a long groove of a support pillar for molding a product and a convex strip positioned on the outer side of the long groove, the bottom surface of the first insert is connected with the second insert in a sliding way through a guide rail, the joint of the first insert and the second insert is a second sliding surface, the bottom surface of the first insert is in sliding connection with the top surface of the sliding block through a dovetail groove and a trapezoidal guide rail, and the second sliding surface of the first insert and the first sliding surface of the sliding block are in the same inclination direction; the upper die is provided with a notch, the tails of the first insert and the second insert are positioned in the notch of the upper die, the tail of the first insert abuts against the front end of a top block at the top of a sliding block, the top block is connected to the top of the sliding block in a sliding manner, a space is arranged between the inner side wall of the sliding block and the inner wall of the notch of the upper die, the inner wall of the notch of the upper die is provided with a driving surface, the driving surface is consistent with the die opening direction of the upper die, and the driving surface abuts against the inner end face of the top block; in a die assembly state, the tail part of the sliding block is positioned between the upper die and the lower die, and the bottom of the inclined guide post obliquely penetrates through the sliding block and is embedded into a hole of the lower die;
the mold opening has two-step states: in a first step of die opening, the upper die and the inclined guide post ascend upwards by a distance D1, the slide block slides away from a product along a sliding surface, the second insert and the third insert slide synchronously with the slide block, the first insert abuts against a top block, the top block abuts against a driving surface of the upper die, the first insert faces downwards along the sliding surface, and the convex strip moves downwards to the bottommost part of a support column of the product; and in the second step of die opening, the upper die and the inclined guide post ascend upwards by a distance D2 and are separated from the slide block, and the slide block drives the first insert, the second insert, the third insert and the ejector block to be away from the formed product.
The sliding surface between the bottom surface of the sliding block and the top surface of the lower die inclines by 5-8 degrees, and one side close to the product is lower than one side far away from the product.
The sliding surface between the bottom surface of the first insert and the top surface of the sliding block inclines by 12-18 degrees, and one side close to the product is lower than one side far away from the product.
And in the second step of die opening, a space is arranged between the side surface of the lower part of the driving surface of the inner wall of the notch of the upper die and the inner end surface of the top block.
And in the first step of die opening state, the cavity wall of the second insert is retracted relative to the cavity wall of the first insert.
And in the second step of die opening, the cavity walls of the first insert and the second insert are flush.
The bottom of kicking block is equipped with the stopper, the top of slider is equipped with the gliding spacing groove of confession stopper, the stopper compound die state offsets on the lateral wall of one side of keeping away from the product of spacing groove with the die sinking second step state.
After adopting the structure, the invention has the following advantages: through a two-step demolding method, the upper die and the inclined guide post drive the sliding to slide backwards in the first step, the sliding block inclines and slides upwards due to the fact that the sliding block inclines and the first sliding surface of the lower die, the first insert of the forming support column is abutted by the ejector block, the ejector block is abutted by the driving surface in the gap of the upper die and slides along the sliding block, the bottom surface of the first insert is connected with the top surface of the sliding block in a sliding mode through the dovetail groove and the trapezoidal guide rail, namely the sliding block slides to certainly drive the sliding block to slide and limit the sliding direction, therefore, the first insert can only slide downwards along the second sliding surface in an inclined mode, the support column is separated from the long groove in the first insert, and the convex strip moves downwards to the bottommost part of the. And in the second step, the inclined guide post and the upper die drive the first insert, the second insert, the third insert and the ejector block to be away from the formed product, so that the reverse demolding structure is adopted, no additional part is added, the structure is simple, normal demolding can be realized, and the reliability and the stability are good.
As an improvement, a first sliding surface between the bottom surface of the sliding block and the top surface of the lower die inclines by 5-8 degrees, one side close to the product is lower than one side far away from the product, and the sliding direction of the sliding and the first insert is guaranteed when the upper die drives the sliding block.
As an improvement, a second sliding surface between the bottom surface of the first insert and the top surface of the sliding block inclines by 12-18 degrees, and one side close to the product is lower than one side far away from the product, so that the sliding direction of the upper die and the sliding direction of the first insert are ensured when the upper die drives the sliding block.
As an improvement, in the second step state of die opening, a space is arranged between the side surface of the lower part of the driving surface of the inner wall of the notch of the upper die and the inner end surface of the top block, so that abutting contact is avoided.
As an improvement, in the first mold opening step state, the cavity wall of the second mold insert is retracted relative to the cavity wall of the first mold insert.
Drawings
FIG. 1 is a partial schematic structural view of the present invention.
Fig. 2 is a schematic sectional view showing a mold clamping state of the present invention.
FIG. 3 is a cross-sectional view of the first step of opening the mold according to the present invention.
FIG. 4 is a cross-sectional view of the first step of opening the mold according to the present invention.
Fig. 5 is an enlarged view of a portion a of fig. 3.
Shown in the figure:
1. the mold comprises an upper mold, 1.1, a driving surface, 1.2, a side surface, 2, a lower mold, 3, an inclined guide post, 4, a sliding block, 4.1, a limiting groove, 5, a first mold insert, 5.1, a long groove, 5.2, a convex strip, 6, a second mold insert, 7, a third mold insert, 8, a top block, 8.1, a limiting block, 101, a product, 102 and a supporting column.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1-5, the injection mold with the step-by-step demolding structure comprises an upper mold 1 and a lower mold 2, wherein an inclined guide post 3 is arranged on the upper mold 1, a slide block 4, a first insert 5, a second insert 6 and a third insert 7 are arranged on the lower mold 2, the slide block 4 is connected with the lower mold 2 in a sliding manner, the connection position of the slide block 4 and the lower mold 2 is a first sliding surface, the first sliding surface between the bottom surface of the slide block 4 and the top surface of the lower mold 2 is inclined by 5-8 degrees, and the side close to a product 101 is lower than the side far away from the.
The first insert 5, the second insert 6 and the third insert 7 are positioned on the side surface of the slide block 4 from top to bottom and are used as a part of a cavity of a molded product 101.
The side surface of the first insert 5 is provided with a long groove 5.1 of a support pillar 102 of a molded product 101 and a convex strip 5.2 positioned on the outer side of the long groove 5.1, the bottom surface of the first insert 5 is in sliding connection with the second insert 6 through a guide rail, the connection part is a second sliding surface, and the bottom surface of the first insert is in sliding connection with the top surface of a sliding block through a dovetail groove and a trapezoidal guide rail; and a second sliding surface between the bottom surface of the first insert 5 and the top surface of the slide block 4 inclines by 12-18 degrees, and one side close to the product 101 is lower than one side far away from the product 101.
The second sliding surface of the first insert 5 and the first sliding surface of the slide block 4 are consistent in inclination direction; the mold comprises an upper mold 1 and a lower mold 1, and is characterized in that the upper mold 1 is provided with a notch, the tails of a first insert 5 and a second insert 6 are positioned in the notch of the upper mold 1, the tail of the first insert 5 abuts against the front end of a top block 8 at the top of a sliding block 4, the top block 8 is slidably connected to the top of the sliding block 4, and a space is arranged between the inner side wall of the sliding block 4 and the inner wall of the notch of the upper mold 1. The bottom of the top block 8 is provided with a limiting block 8.1, the top of the sliding block 4 is provided with a limiting groove 4.1 for the limiting block 8.1 to slide, and the limiting block 8.1 abuts against the side wall of one side of the limiting groove 4.1, which is far away from the product 101, in the die closing state and the die opening second step state.
The inner wall of the gap of the upper die 1 is provided with a driving surface 1.1, the driving surface 1.1 is consistent with the die opening direction of the upper die 1, and the driving surface 1.1 is abutted to the end face of the inner end of the ejector block 8.
As shown in fig. 2, in a mold closing state, the tail part of the slide block 4 is positioned between the upper mold 1 and the lower mold 2, and the bottom part of the inclined guide post 3 obliquely penetrates through the slide block 4 and is embedded into a hole of the lower mold 2;
the mold opening has two-step states: as shown in fig. 3, in a first step of mold opening, the upper mold 1 and the angle guide 3 are raised upward by a distance D1, the slide block 4 slides away from the product 101 along the sliding surface, the second insert 6 and the third insert 7 slide synchronously with the slide block 4, the first insert 5 abuts against the top block 8, the top block 8 abuts against the driving surface 1.1 of the upper mold 1, the first insert 5 moves downward along the sliding surface, and the protrusion 5.2 moves downward to the bottommost portion of the support pillar 102 of the product 101; the cavity wall of the second insert 6 is retracted relative to the cavity wall of the first insert 5.
As shown in fig. 4, in the second state of mold opening, the upper mold 1 and the angle guide 3 rise upward by a distance D2 and are separated from the slide block 4, the slide block 4 drives the first insert 5, the second insert 6, the third insert 7 and the ejector block 8 to be away from the molded product 101, and in the second state of mold opening, a distance is provided between the side surface 1.2 of the lower part of the driving surface 1.1 of the inner wall of the notch of the upper mold 1 and the inner end surface of the ejector block 8. The cavity walls of the first insert 5 and the second insert 6 are flush.
Claims (7)
1. An injection mold with a step-by-step demolding structure comprises an upper mold (1) and a lower mold (2), wherein an inclined guide post (3) is arranged on the upper mold (1), a sliding block (4), a first insert (5), a second insert (6) and a third insert (7) are arranged on the lower mold (2), the sliding block (4) is in sliding connection with the lower mold (2), the connection position of the sliding block (4) and the lower mold is a first sliding surface, the first insert (5), the second insert (6) and the third insert (7) are located on the side surface of the sliding block (4) from top to bottom and are used as a part of a cavity of a molded product (101), the side surface of the first insert (5) is provided with a long groove (5.1) of a support pillar (102) of the molded product (101) and a convex strip (5.2) located on the outer side of the long groove (5.1), the bottom surface of the first insert (5) is in sliding connection with the, the bottom surface of the first insert (5) is in sliding connection with the top surface of the sliding block (4) through a dovetail groove and a trapezoidal guide rail; the second sliding surface of the first insert (5) and the first sliding surface of the sliding block (4) are consistent in inclination direction; the mold is characterized in that the upper mold (1) is provided with a notch, the tails of the first insert (5) and the second insert (6) are positioned in the notch of the upper mold (1), the tail of the first insert (5) abuts against the front end of a top block (8) at the top of the sliding block (4), the top block (8) is connected to the top of the sliding block (4) in a sliding manner, a space is reserved between the inner side wall of the sliding block (4) and the inner wall of the notch of the upper mold (1), the inner wall of the notch of the upper mold (1) is provided with a driving surface (1.1), the opening direction of the driving surface (1.1) and the opening direction of the upper mold (1) are consistent, and the driving surface (1.1) abuts against the inner end face of the top block (8); in a die assembly state, the tail part of the sliding block (4) is positioned between the upper die (1) and the lower die (2), and the bottom of the inclined guide post (3) obliquely penetrates through the sliding block (4) and is embedded into a hole of the lower die (2);
the mold opening has two-step states: in a first step of die opening, the upper die (1) and the inclined guide post (3) ascend upwards by a distance D1, the slide block (4) slides along a sliding surface away from the product (101), the second insert (6) and the third insert (7) slide synchronously with the slide block (4), the first insert (5) abuts against the ejector block (8), the ejector block (8) abuts against a driving surface (1.1) of the upper die (1), the first insert (5) descends along the sliding surface, and the raised strip (5.2) moves downwards to the bottommost part of a support pillar (102) of the product (101); and in the second step of die opening, the upper die (1) and the inclined guide post (3) ascend upwards by a distance D2 and are separated from the sliding block (4), and the sliding block (4) drives the first insert (5), the second insert (6), the third insert (7) and the ejector block (8) to be away from the formed product (101).
2. The injection mold with a step-by-step mold release structure according to claim 1, wherein: the first sliding surface between the bottom surface of the sliding block (4) and the top surface of the lower die (2) inclines by 5-8 degrees, and one side close to the product (101) is lower than one side far away from the product (101).
3. The injection mold with a step-by-step mold release structure according to claim 1, wherein: and a second sliding surface between the bottom surface of the first insert (5) and the top surface of the sliding block (4) inclines by 12-18 degrees, and one side close to the product (101) is lower than one side far away from the product (101).
4. The injection mold with a step-by-step mold release structure according to claim 1, wherein: and in the second step of die opening, a space is arranged between the side surface (1.2) of the lower part of the driving surface (1.1) of the inner wall of the notch of the upper die (1) and the inner end surface of the ejector block (8).
5. The injection mold with a step-by-step mold release structure according to claim 1, wherein: and in the first step of die opening state, the cavity wall of the second insert (6) is retracted relative to the cavity wall of the first insert (5).
6. The injection mold with a step-by-step mold release structure according to claim 1, wherein: and in the second step of die opening, the cavity walls of the first insert (5) and the second insert (6) are flush.
7. The injection mold with a step-by-step mold release structure according to claim 1, wherein: the bottom of kicking block (8) is equipped with stopper (8.1), the top of slider (4) is equipped with supplies stopper (8.1) gliding spacing groove (4.1), stopper (8.1) offset on the lateral wall of one side of keeping away from product (101) of spacing groove (4.1) when compound die state and die sinking second step state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910751663.XA CN110450363B (en) | 2019-08-15 | 2019-08-15 | Injection mold with step-by-step demolding structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910751663.XA CN110450363B (en) | 2019-08-15 | 2019-08-15 | Injection mold with step-by-step demolding structure |
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| CN110450363A CN110450363A (en) | 2019-11-15 |
| CN110450363B true CN110450363B (en) | 2021-07-13 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111168943B (en) * | 2020-01-10 | 2021-10-22 | 宁波方正汽车模具股份有限公司 | Demoulding mechanism of automobile air conditioner air duct injection mould |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102218804B (en) * | 2010-04-13 | 2013-07-31 | 台州市黄岩大盛模塑有限公司 | Secondary core puller for inclined fixed hole of fog lamp shell die for vehicle |
| CN202357384U (en) * | 2011-11-16 | 2012-08-01 | 浙江天翀车灯集团有限公司 | Taper pin type slide block demolding mechanism of automobile lamp mold |
| CN205112288U (en) * | 2015-11-06 | 2016-03-30 | 江苏星科精密模具有限公司 | Car light injection mold demoulding mechanism of loosing core down outward |
| CN109716745B (en) * | 2016-08-01 | 2020-12-18 | 宁波舜宇光电信息有限公司 | Camera module, molded circuit board assembly and molded photosensitive assembly thereof and manufacturing method |
| CN208759941U (en) * | 2018-09-06 | 2019-04-19 | 江苏星科精密模具有限公司 | A kind of outer core pulling reverse stripping mechanism of mould of car lamp |
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