CN114407245B - Core pulling structure with concave inner wall for molded product - Google Patents
Core pulling structure with concave inner wall for molded product Download PDFInfo
- Publication number
- CN114407245B CN114407245B CN202210067312.9A CN202210067312A CN114407245B CN 114407245 B CN114407245 B CN 114407245B CN 202210067312 A CN202210067312 A CN 202210067312A CN 114407245 B CN114407245 B CN 114407245B
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- guide
- block
- core
- sliding
- sliding block
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- 238000000465 moulding Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000007493 shaping process Methods 0.000 claims description 9
- 244000188472 Ilex paraguariensis Species 0.000 claims 1
- 238000004891 communication Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
-
- 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
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a core pulling structure for concave inner wall on a molded product, wherein a main sliding block is arranged on a first mounting frame body in a sliding way, the main sliding block comprises a sliding channel, an auxiliary sliding block is arranged in the sliding channel in a sliding way, the auxiliary sliding block comprises a first guide inclined surface, a core pulling molding block is arranged on the first guide inclined surface in a sliding way, a second guide inclined surface is arranged on the lower side surface of the core pulling molding block, the first guide inclined surface is matched with the second guide inclined surface in a fitting way, the first guide inclined surface comprises a first guide part, the second guide inclined surface comprises a second guide part, and the first guide part is matched with the second guide part; a first translation driving device for driving the main sliding block to translate is arranged on the first mounting frame body; the auxiliary sliding block is fixedly provided with a second installation frame body, and a second translation driving device for driving the auxiliary sliding block to translate is arranged on the second installation frame body. When the die is removed, the inner wall of the product is recessed reliably, the product is prevented from being pulled out in the forming process, and the die is suitable for production under the conditions of high product and large buckling position.
Description
Technical Field
The invention relates to the technical field of core pulling structures applied to mold molding, in particular to a core pulling structure with a concave inner wall for a molded product.
Background
At present, the inner wall shaping of product is sunken (back-off), adopts the fashioned mode of loosing core, but current mode of loosing core generally adopts the mode of loosing core of oblique top, because in the great product shaping in-process of volume, the volume based on back-off structure is also great relatively to the back-off atress is limited, hardly reaches reliable drawing of patterns after the sunken formation of inner wall, also can't reach the back-off high accuracy requirement after the product shaping, even the product takes place the damage easily at the drawing of patterns in-process for the product shaping rate is low.
Disclosure of Invention
The invention aims to solve the defects of the technology, and discloses a core pulling structure for an inner wall recess on a molded product, which is specifically disclosed as follows.
The invention relates to a core pulling structure for recessing an inner wall of a molded product, which comprises a first mounting frame body and a molding mold core and is characterized in that a main sliding block is arranged on the first mounting frame body in a sliding way, the main sliding block comprises a sliding channel, an auxiliary sliding block is arranged in the sliding channel in a sliding way, the auxiliary sliding block comprises a first guide inclined plane, a core pulling molding block is arranged on the first guide inclined plane in a sliding way, a second guide inclined plane is arranged on the lower side surface of the core pulling molding block, the first guide inclined plane is matched with the second guide inclined plane in a fitting way, the first guide inclined plane comprises a first guide part, the second guide inclined plane comprises a second guide part, and the first guide part is matched with the second guide part; in the horizontal sliding process of the auxiliary sliding block, the core-pulling forming block slides along the first guide inclined plane so as to make the auxiliary sliding block perform lifting action; the top surface of the core-pulling forming block is provided with a forming part for forming the concave inner wall, and the front side surface of the core-pulling forming block is abutted against the mold core;
the first mounting frame body is provided with a first translation driving device for driving the main sliding block to translate, and the first translation driving device is connected with the main sliding block;
the auxiliary sliding block is fixedly provided with a second installation frame body, a second translation driving device for driving the auxiliary sliding block to translate is installed on the second installation frame body, and the first translation driving device is connected with the auxiliary sliding block.
Preferably, the core-pulling forming block comprises a positioning part, the positioning part is positioned between the first guide inclined plane and the upper inner wall of the sliding channel, and the second guide inclined plane is positioned on the bottom surface of the positioning part.
Preferably, the first guiding inclined plane further comprises a third guiding part, the second guiding inclined plane further comprises a fourth guiding part, and the third guiding part is in sliding fit with the fourth guiding part.
Preferably, the first guide part comprises a first guide channel with a dovetail-shaped cross section, the second guide part comprises a first guide block with a dovetail-shaped cross section, or the first guide part comprises a first guide block with a dovetail-shaped cross section, and the second guide part comprises a first guide channel with a dovetail-shaped cross section;
the first guide block is correspondingly embedded into the first guide channel.
Preferably, the third guide part comprises a second guide channel, and the fourth guide part comprises a second guide block; the second guide block is correspondingly embedded into the second guide channel.
Preferably, the inner wall of the first mounting frame body is provided with a sliding guide groove, the outer wall of the main sliding block is provided with a sliding guide block, and the sliding guide block is correspondingly embedded into the sliding guide groove.
Preferably, the inner wall of the sliding channel is provided with a fifth guide part, and the auxiliary sliding block is provided with a sixth guide part matched with the fifth guide part.
Preferably, the fifth guiding part comprises a third guiding channel with a dovetail-shaped cross section, the sixth guiding part comprises a third guiding block with a dovetail-shaped cross section, or the fifth guiding part comprises a third guiding block with a dovetail-shaped cross section, and the sixth guiding part comprises a third guiding channel with a dovetail-shaped cross section;
the third guide block is correspondingly embedded into the third guide channel.
Preferably, the molding part comprises a recess and two protrusions, and the two protrusions are respectively positioned at two ends of the horizontal inner wall of the recess.
Preferably, the first translational drive device and the second translational drive device each comprise an oil cylinder.
The core pulling structure for the inner wall recess (back-off) on the molded product can drive the core pulling molding block to descend when demolding is carried out, so that the molding part of the core pulling molding block is separated from the inner wall recess of the product, and then the core pulling molding block is driven to be separated from the inner cavity of the product, so that the inner wall recess (back-off) on the product is reliably formed, the product is prevented from being pulled out in the molding process, and the core pulling structure is suitable for production under the conditions of high product and large buckling position.
Drawings
FIG. 1 is a schematic diagram of the overall structure (one);
FIG. 2 is a schematic diagram of the overall structure (II);
FIG. 3 is a schematic overall construction (III);
FIG. 4 is a schematic overall construction (IV);
FIG. 5 is a schematic diagram of the overall structure (V);
FIG. 6 is a schematic diagram (one) of the product structure;
FIG. 7 is a schematic diagram of a product structure (II);
FIG. 8 is a schematic diagram (I) of the core-pulling molding block (4);
fig. 9 is a schematic diagram (two) of the core-pulling molding block (4).
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
Examples:
as shown in the drawings, the core pulling structure for the inner wall recess 441 on the molded product described in this embodiment includes a first mounting frame body 1 and a molding mold core 7, a main sliding block 2 is slidably disposed on the first mounting frame body 1, the main sliding block 2 includes a sliding channel 21, a sub sliding block 3 is slidably disposed in the sliding channel 21, the sub sliding block 3 includes a first guiding inclined surface 31, a core pulling molding block 4 is slidably disposed on the first guiding inclined surface 31, a second guiding inclined surface 41 is disposed on a lower side surface of the core pulling molding block 4, the first guiding inclined surface 31 is in fit with the second guiding inclined surface 41, the first guiding inclined surface 31 includes a first guiding portion 32, the second guiding inclined surface 41 includes a second guiding portion 42, and the first guiding portion 32 is matched with the second guiding portion 42; in the horizontal sliding process of the auxiliary sliding block 3, the core-pulling forming block 4 slides along the first guide inclined plane 31 so as to make the auxiliary sliding block perform lifting action; the top surface of the core-pulling forming block 4 is provided with a forming part 44 for forming the inner wall recess 441, and the front side surface of the core-pulling forming block 4 is abutted against the mold core; a first translation driving device 6 for driving the main sliding block 2 to translate is fixed on the first mounting frame body 1 through bolts, and the first translation driving device 6 is in threaded connection with the main sliding block 2; the auxiliary sliding block 3 is fixedly provided with a second installation frame body 5 through bolts, the second installation frame body 5 is fixedly provided with a second translation driving device 8 for driving the auxiliary sliding block 3 to translate through bolts, and the first translation driving device 6 is connected with the auxiliary sliding block 3. Preferably, the first translation driving device 6 and the second translation driving device 8 each comprise an oil cylinder, and are suitable for shaping large-scale products.
Preferably, the molding part 44 includes a recess 441 and two protrusions 442, and the two protrusions 442 are respectively located at two ends of the horizontal inner wall of the recess 441, so that the inner wall of the upper side of the window of the product forms the recess 441, i.e., the undercut.
The method for core pulling based on the structure comprises the following steps:
step S1, a core-pulling forming block 4 is positioned at a high position of a first guide inclined plane 31 in the process of forming a product in a die cavity of a die, and the front side surface and the rear side surface of the core-pulling forming block 4 respectively lean against a main sliding block 2 and a forming die core 7;
step S2, when demoulding is carried out after the product is formed, the second translation driving device 8 drives the auxiliary sliding block 3 to retreat, so that the core-pulling forming block 4 moves to the lower position of the first guide inclined plane 31 under the cooperation of the first guide inclined plane 31 and the second guide inclined plane 41, the forming part 44 of the core-pulling forming block 4 is separated from the concave 441 on the inner wall of the product, and the core-pulling forming block 4 is correspondingly positioned at a window of the product;
in step S3, the first translational driving device 6 drives the main slider 2 to retract, so that the core-pulling forming block 4 is separated from the product through the window of the product.
Preferably, the core-pulling forming block 4 includes a positioning portion 45, the positioning portion 45 is located between the first guiding inclined plane 31 and the upper inner wall of the sliding channel 21, and the second guiding inclined plane 41 is located at the bottom surface of the positioning portion 45, and the structure thereof is arranged so that the core-pulling forming block 4 operates stably in the lifting displacement process and the displacement precision is improved.
Preferably, the first guide portion 32 includes a first guide channel 321 having a dovetail shape in cross section, the second guide portion 42 includes a first guide block 421 having a dovetail shape in cross section, the first guide block 421 is fixed on the second guide inclined surface 41 by a bolt, or the first guide portion 32 includes a first guide block 421 having a dovetail shape in cross section, and the second guide portion 42 includes a first guide channel 321 having a dovetail shape in cross section; the first guide block 421 is correspondingly embedded in the first guide channel 321. The structure of the core-pulling type core-pulling device is arranged to enable the core-pulling forming blocks 4 and the auxiliary sliding blocks 3 to achieve more stable lifting action of the core-pulling forming blocks 4 in the process of sliding relatively, and the mould cores between the core-pulling forming blocks 4 and the main sliding blocks 2 are lifted.
In the present embodiment, the first guiding inclined surface 31 further includes a third guiding portion 33, the second guiding inclined surface 41 further includes a fourth guiding portion 43, and the third guiding portion 33 is slidably engaged with the fourth guiding portion 43; specifically, the third guide part 33 includes a second guide passage 331, and the fourth guide part 43 includes a second guide block 431; the second guide block 431 is correspondingly embedded in the second guide channel 331. The structure of the device ensures that the lifting action of the core-pulling forming block 4 is realized more stably in the relative sliding process of the core-pulling forming block 4 and the auxiliary sliding block 3.
In order to stabilize the sliding of the sub slider 3, a positioning block 211 is provided on the upper inner wall of the sliding passage 21, which is inserted into the second guide passage 331.
Preferably, the inner wall of the first mounting frame body 1 is provided with a sliding guide groove 11, the outer wall of the main sliding block 2 is provided with a sliding guide block 22, the sliding guide block 22 is correspondingly embedded into the sliding guide groove 11, and the structure is arranged to enable the main sliding block 2 to slide reciprocally stably and reliably.
Preferably, the inner wall of the sliding channel 21 is provided with a fifth guide part 212, the auxiliary sliding block 3 is provided with a sixth guide part 34 matched with the fifth guide part 212, specifically, the fifth guide part 212 comprises a third guide channel 213 with a dovetail-shaped cross section, the sixth guide part 34 comprises a third guide block 341 with a dovetail-shaped cross section, the third guide block 341 is fixed on the bottom surface of the auxiliary sliding block 3 through a bolt, or the fifth guide part 212 comprises a third guide block 341 with a dovetail-shaped cross section, and the sixth guide part 34 comprises a third guide channel 213 with a dovetail-shaped cross section; the third guide block 341 is correspondingly embedded in the third guide channel 213. The structure setting of the sliding block enables the auxiliary sliding block 3 to obtain the positioning sliding effect in the sliding process, the service performance is improved, and the sliding precision is improved.
Preferably, the main sliding block 2 is provided with an inclined wedging surface 45, and the inclined wedging surface 45 is fixed with a wedging block.
The present invention is not limited to the above-described preferred embodiments, and any person who can obtain other various products under the teaching of the present invention, however, any change in shape or structure of the product is within the scope of the present invention, and all the products having the same or similar technical solutions as the present application are included.
Claims (10)
1. The utility model provides a loose core structure for inner wall is sunken (441) on shaping product, including first mounting bracket body (1) and shaping mold core (7), a serial communication port, slide on first mounting bracket body (1) and be provided with main sliding block (2), main sliding block (2) are including sliding passageway (21), sliding passageway (21) sliding is provided with vice sliding block (3), vice sliding block (3) are including first guide inclined plane (31), slide on first guide inclined plane (31) and be provided with loose core shaping piece (4), the downside of loose core shaping piece (4) is provided with second guide inclined plane (41), first guide inclined plane (31) are laminated with second guide inclined plane (41) and are matees, first guide inclined plane (31) include first guide part (32), second guide inclined plane (41) include second guide part (42), first guide part (32) are mated with second guide part (42); in the horizontal sliding process of the auxiliary sliding block (3), the core-pulling forming block (4) slides along the first guide inclined plane (31) to enable the auxiliary sliding block to perform lifting action; the top surface of the core-pulling forming block (4) is provided with a forming part (44) for forming an inner wall recess (441), and the front side surface of the core-pulling forming block (4) is abutted against the mold core;
a first translation driving device (6) for driving the main sliding block (2) to translate is arranged on the first mounting frame body (1), and the first translation driving device (6) is connected with the main sliding block (2);
a second installation frame body (5) is fixed on the auxiliary sliding block (3), a second translational driving device (8) for driving the auxiliary sliding block (3) to translate is installed on the second installation frame body (5), and the first translational driving device (6) is connected with the auxiliary sliding block (3).
2. A core pulling structure for an inner wall recess (441) on a molded product according to claim 1, wherein the core pulling molding block (4) includes a positioning portion (45), the positioning portion (45) is located between the first guiding inclined surface (31) and the upper inner wall of the sliding passage (21), and the second guiding inclined surface (41) is located at the bottom surface of the positioning portion (45).
3. A core pulling structure for an inner wall recess (441) on a molded article according to claim 1, wherein the first guiding inclined surface (31) further comprises a third guiding portion (33), the second guiding inclined surface (41) further comprises a fourth guiding portion (43), and the third guiding portion (33) is slidably engaged with the fourth guiding portion (43).
4. A core pulling structure for an inner wall recess (441) on a molded product according to claim 3, wherein the first guide portion (32) includes a first guide passage (321) having a dovetail shape in cross section, the second guide portion (42) includes a first guide block (421) having a dovetail shape in cross section, or the first guide portion (32) includes a first guide block (421) having a dovetail shape in cross section, and the second guide portion (42) includes a first guide passage (321) having a dovetail shape in cross section;
the first guide block (421) is correspondingly embedded into the first guide channel (321).
5. A core pulling structure for an inner wall recess (441) on a molded product according to claim 3 or 4, wherein the third guide portion (33) includes a second guide passage (331), and the fourth guide portion (43) includes a second guide block (431); the second guide block (431) is correspondingly embedded in the second guide channel (331).
6. Core pulling structure for an inner wall recess (441) on a molded product according to claim 1, wherein a sliding guide groove (11) is provided on the inner wall of the first mounting frame body (1), a sliding guide block (22) is provided on the outer wall of the main sliding block (2), and the sliding guide block (22) is correspondingly embedded into the sliding guide groove (11).
7. A core pulling structure for an inner wall recess (441) on a molded article according to any one of claims 1 to 4 and 6, wherein the inner wall of the sliding passage (21) is provided with a fifth guide portion (212), and the sub slider (3) is provided with a sixth guide portion (34) which is fitted to the fifth guide portion (212).
8. A core pulling structure for an inner wall recess (441) on a molded product according to claim 7, wherein the fifth guide portion (212) includes a third guide passage (213) having a dovetail shape in cross section, the sixth guide portion (34) includes a third guide block (341) having a dovetail shape in cross section, or the fifth guide portion (212) includes a third guide block (341) having a dovetail shape in cross section, the sixth guide portion (34) includes a third guide passage (213) having a dovetail shape in cross section;
the third guide block (341) is correspondingly embedded in the third guide channel (213).
9. A core pulling structure for an inner wall recess (441) on a molded product according to claim 1, wherein the molding portion (44) includes a recess (441) and two protrusions (442), the two protrusions (442) being located at both ends of a horizontal inner wall of the recess (441), respectively.
10. Core pulling structure for an inner wall recess (441) on a molded article according to claim 1, wherein the first translational driving device (6) and the second translational driving device (8) each comprise an oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210067312.9A CN114407245B (en) | 2022-01-20 | 2022-01-20 | Core pulling structure with concave inner wall for molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210067312.9A CN114407245B (en) | 2022-01-20 | 2022-01-20 | Core pulling structure with concave inner wall for molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114407245A CN114407245A (en) | 2022-04-29 |
| CN114407245B true CN114407245B (en) | 2024-03-22 |
Family
ID=81275214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210067312.9A Active CN114407245B (en) | 2022-01-20 | 2022-01-20 | Core pulling structure with concave inner wall for molded product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114407245B (en) |
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| CN208529631U (en) * | 2018-06-04 | 2019-02-22 | 上海天海电子有限公司 | A kind of one drags the slide block structure of three depannings |
| CN110103412A (en) * | 2019-06-03 | 2019-08-09 | 常州密优精密模具有限公司 | A kind of sliding block band internal loose core injection mold |
| CN209224477U (en) * | 2018-11-07 | 2019-08-09 | 湖南省嘉力机械有限公司 | A kind of oblique core drawing mechanism |
| CN110406044A (en) * | 2019-08-14 | 2019-11-05 | 宁波方正汽车模具股份有限公司 | Loose core of oil cylinder retreating prevention mechanism |
| CN209633690U (en) * | 2019-02-20 | 2019-11-15 | 中亿腾模塑科技（苏州）有限公司 | A kind of plastic mould with pressure with angle back-off stripping structure |
| CN212603190U (en) * | 2020-05-11 | 2021-02-26 | 上海良勤实业有限公司 | Core pulling mechanism of injection mold |
| CN212979099U (en) * | 2020-04-23 | 2021-04-16 | 华域视觉科技(上海)有限公司 | Forming block back locking structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7381051B2 (en) * | 2006-01-24 | 2008-06-03 | Cheng Uei Precision Industry Co., Ltd. | Core-pulling mechanism and injection mold with the same |
-
2022
- 2022-01-20 CN CN202210067312.9A patent/CN114407245B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204340124U (en) * | 2014-12-23 | 2015-05-20 | 英杰精密模塑股份有限公司 | Mould of plastics internal core-pulling mechanism |
| CN208529631U (en) * | 2018-06-04 | 2019-02-22 | 上海天海电子有限公司 | A kind of one drags the slide block structure of three depannings |
| CN209224477U (en) * | 2018-11-07 | 2019-08-09 | 湖南省嘉力机械有限公司 | A kind of oblique core drawing mechanism |
| CN209633690U (en) * | 2019-02-20 | 2019-11-15 | 中亿腾模塑科技（苏州）有限公司 | A kind of plastic mould with pressure with angle back-off stripping structure |
| CN110103412A (en) * | 2019-06-03 | 2019-08-09 | 常州密优精密模具有限公司 | A kind of sliding block band internal loose core injection mold |
| CN110406044A (en) * | 2019-08-14 | 2019-11-05 | 宁波方正汽车模具股份有限公司 | Loose core of oil cylinder retreating prevention mechanism |
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| CN212603190U (en) * | 2020-05-11 | 2021-02-26 | 上海良勤实业有限公司 | Core pulling mechanism of injection mold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114407245A (en) | 2022-04-29 |
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