CN109676876B - Connecting rod transmission spring needle mechanism of injection mold - Google Patents
Connecting rod transmission spring needle mechanism of injection mold Download PDFInfo
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- CN109676876B CN109676876B CN201910017237.3A CN201910017237A CN109676876B CN 109676876 B CN109676876 B CN 109676876B CN 201910017237 A CN201910017237 A CN 201910017237A CN 109676876 B CN109676876 B CN 109676876B
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- connecting rod
- spring
- spring needle
- driving
- groove
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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
- B29C45/401—Ejector pin constructions or mountings
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a connecting rod transmission spring needle mechanism of an injection mold, which comprises a sliding block, wherein a driving groove is formed in the lower right corner of the sliding block, a spring needle hole penetrating through the sliding block is formed in the upper part of the sliding block, and a connecting rod groove is formed between the driving groove and the spring needle hole; a driving block is arranged in the driving groove, a spring groove is formed in the driving block, and a driving spring is arranged in the spring groove; a spring needle is arranged in the spring needle hole, an ejection stop block is arranged on the spring needle, and a spring is sleeved on the spring needle; the device also comprises a first connecting rod and a second connecting rod, wherein the first connecting rod and the second connecting rod are both arranged on the connecting rod groove through a pin shaft; the bottom of the sliding block is also provided with a guide rail, and the guide rail is provided with a lower limiting block matched with the structure of the guide rail. Compared with the prior art, the invention has the advantages that the two connecting rods are arranged on the basis of the spring needle, the spring needle ejects out a product through the transmission of the connecting rods, the structure is ingenious, the demolding is stable, the occupied space is saved, the manufacturing cost is reduced, and the practicability is higher.
Description
Technical Field
The invention relates to a connecting rod transmission spring needle mechanism of an injection mold, and belongs to the technical field of injection molds.
Background
The spring pin is one of the most common mechanisms in the die, and the spring pin is required to be designed when a deeper rib position is arranged on a general product, so that the situation that the product is sticky to a sliding block and deformed and scrapped during demolding is prevented. The spring needle is generally positioned in the slider, when the ejection stroke of the slider is too long, the space which is dug out for installing the spring needle mechanism in the slider is correspondingly increased, the strength of the slider is affected, and the processing cost is increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a connecting rod driving spring needle mechanism of an injection mold.
The technical scheme adopted for realizing the purpose is as follows:
the connecting rod driving spring needle mechanism of the injection mold comprises a sliding block, wherein a driving groove is formed in the lower right corner of the sliding block, a spring needle hole penetrating through the sliding block is formed in the upper portion of the sliding block, and a connecting rod groove is formed between the driving groove and the spring needle hole;
a driving block is arranged in the driving groove, a spring groove is formed in the driving block, a driving spring is arranged in the spring groove, and two ends of the driving spring are respectively contacted with the bottom of the spring groove and the bottom of the driving groove;
the spring needle hole consists of a large hole and a small hole, the large hole is positioned on the right side of the small hole, a step is formed between the large hole and the small hole, a spring needle is arranged in the spring needle hole, an ejection stop block is arranged on the spring needle, a spring is sleeved on the spring needle, the spring is positioned in the large hole, and two ends of the spring are respectively contacted with the step and the ejection stop block;
the novel connecting rod comprises a connecting rod groove, and is characterized by further comprising a first connecting rod and a second connecting rod, wherein the first connecting rod and the second connecting rod are both arranged on the connecting rod groove through pin shafts, and both ends of the first connecting rod and both ends of the second connecting rod are both provided with notches;
the bottom of the sliding block is also provided with a guide rail, the guide rail is provided with a lower limiting block matched with the guide rail in structure, a sliding groove matched with the guide rail in structure is formed in the lower limiting block, and the lower limiting block is fixedly arranged on the injection molding machine;
when the die is assembled, the lower limiting block is in contact with the driving block, the notch at the upper end of the first connecting rod is in contact with the notch at the lower end of the second connecting rod, and the notch at the upper end of the second connecting rod is in contact with the tail of the spring needle.
As a further optimization of the above technical solution: the upper left corner of the driving block is provided with a slope, the slope comprises an initial slope and an ejection slope, the first connecting rod and the notch on the second connecting rod are both made into slopes, the slope of the notch at the upper end of the first connecting rod is also provided with a connecting rod slope, and the lower end of the tail part of the spring needle is also provided with a spring needle slope.
As a further optimization of the above technical solution: the right end of the bullet hole is fixedly provided with an upper limiting block for preventing the ejection stop block from sliding out of the big hole.
Compared with the prior art, the invention has the advantages that the two connecting rods are arranged on the basis of the spring needle, the spring needle ejects out a product through the transmission of the connecting rods, the structure is ingenious, the demolding is stable, the occupied space is saved, the manufacturing cost is reduced, and the practicability is higher.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention at the time of mold closing.
Fig. 2 is a schematic cross-sectional view of the present invention during the demolding of a slider.
FIG. 3 is a schematic cross-sectional view of the present invention after demolding.
Fig. 4 is a schematic cross-sectional view of a first connecting rod according to the present invention.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description. As shown in fig. 1-4, the connecting rod driving spring needle mechanism of the injection mold comprises a sliding block 8, wherein a driving groove 83 is formed in the lower right corner of the sliding block 8, a spring needle hole penetrating through the sliding block 8 is formed in the upper part of the sliding block 8, and a connecting rod groove 84 is formed between the driving groove 83 and the spring needle hole;
a driving block 2 is arranged in the driving groove 83, a spring groove is formed in the driving block 2, a driving spring 1 is arranged in the spring groove, and two ends of the driving spring 1 are respectively contacted with the bottom of the spring groove and the bottom of the driving groove 83;
the spring needle hole consists of a large hole 82 and a small hole 85, the large hole 82 is positioned on the right side of the small hole 85, a step 86 is formed between the large hole 82 and the small hole 85, a spring needle 5 is arranged in the spring needle hole, an ejection stop block 51 is arranged on the spring needle 5, a spring 6 is sleeved on the spring needle 5, the ejection stop block 51 and the spring 6 are positioned in the large hole 82, and two ends of the spring 6 are respectively contacted with the step 86 and the ejection stop block 51;
the novel connecting rod comprises a first connecting rod 3 and a second connecting rod 4, wherein the first connecting rod 3 and the second connecting rod 4 are arranged on a connecting rod groove 84 through a pin shaft 32, and notches 31 are formed at two ends of the first connecting rod 3 and the second connecting rod 4;
the bottom of the sliding block 8 is also provided with a guide rail 81, the guide rail 81 is provided with a lower limiting block 7 matched with the guide rail in structure, a chute matched with the guide rail 81 in structure is arranged in the lower limiting block 7, the guide rail 81 plays a role in guiding and sliding the lower limiting block 7, and the lower limiting block 7 is fixedly arranged on a movable die;
when the die is assembled, the lower limiting block 7 is in contact with the driving block 2, the notch 31 at the upper end of the first connecting rod 3 is in contact with the notch at the lower end of the second connecting rod 4, and the notch at the upper end of the second connecting rod 4 is in contact with the tail of the spring needle 5.
The technical scheme is as follows: the upper left corner of the driving block 2 is provided with a slope, the slope comprises an initial slope 21 and an ejection slope 22, gaps on the first connecting rod 3 and the second connecting rod 4 are all made into slopes, a connecting rod slope 311 is further made on the slope of the upper end gap 31 of the first connecting rod 3, and a spring needle slope 52 is further made on the lower end of the tail of the spring needle 5. As shown in fig. 1, the initial inclined plane 21 of the driving block 2 contacts with the notch 31 at the lower end of the first connecting rod 3 during mold closing, the notch 31 at the upper end of the first connecting rod 3 contacts with the notch at the lower end of the second connecting rod 4, the notch at the upper end of the second connecting rod 4 contacts with the spring needle inclined plane 52 at the tail of the spring needle 5, the head of the spring needle 5 is positioned in the slide block 8, and the end face of the head of the spring needle 5 is positioned on the same plane with the surface of the slide block 8, so that the product is prevented from being broken during injection molding and the product molding is prevented from being affected.
The technical scheme is as follows: the right end of the bullet pinhole is fixed with and prevents ejecting dog 51 roll off big hole 82's last stopper 9, during the mould compound die, ejecting dog 51 with go up stopper 9 and contradict, prevent that the head of bullet needle 5 from being extruded by injection molding pressure and excessively retracting into slider 8, and lead to the product to appear unnecessary protruding, influence the product shaping.
The working process of the invention is as follows, the injection molding machine starts to perform injection molding after mold closing is finished, at this moment, the lower limiting block 7 is positioned at the right end of the guide rail 81 and is in contact with the driving block 2, the driving spring 1 is in a compressed state, the first connecting rod 3 and the second connecting rod 4 are in a vertical state at this moment, the initial inclined plane 21 of the driving block 2 is in contact with the notch 31 at the lower end of the first connecting rod 3, the notch 31 at the upper end of the first connecting rod 3 is in contact with the notch at the lower end of the second connecting rod 4, the notch at the upper end of the second connecting rod 4 is in contact with the spring needle inclined plane 52, the spring 6 is in an extension state, and the surface of the head part of the spring needle 5 and the surface of the sliding block 8 are positioned on the same plane. After the injection molding machine finishes injection molding, the oil cylinder drives the sliding block 8 to perform demolding movement rightwards, the driving block 2 is not interfered by the lower limiting block 7 any more in the process of rightwards moving the sliding block 8 due to the fact that the lower limiting block 7 is fixed, the elasticity of the driving spring 1 is released at the moment, the driving block 2 moves leftwards for a certain distance, the first connecting rod 3 is driven to rotate clockwise around the pin shaft 32 for a certain angle, the second connecting rod 4 is driven by the first connecting rod 3 to rotate anticlockwise around the pin shaft 32 for a certain angle, at the moment, the notch 31 at the lower end of the first connecting rod 3 is contacted with the ejection inclined surface 22 on the driving block 2, the notch at the upper end of the second connecting rod 4 is contacted with the vertical surface at the tail of the ejection pin 5, meanwhile the ejection pin 5 is driven by the second connecting rod 4 to move leftwards for a certain distance, the spring 6 is extruded by the ejection limiting block 51 in the process, and the head of the ejection pin 5 slowly stretches out of the deep bar of the ejection product outside the sliding block 8. Finally, the slide block 8 continues to move right until the product is smoothly demolded.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical schemes which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the technical personnel in the field according to the conception of the invention are within the protection scope of the invention.
Claims (1)
1. The connecting rod transmission spring needle mechanism of the injection mold is characterized by comprising a sliding block (8), wherein a driving groove (83) is formed in the lower right corner of the sliding block (8), a spring needle hole penetrating through the sliding block (8) is formed in the upper part of the sliding block (8), and a connecting rod groove (84) is formed between the driving groove (83) and the spring needle hole;
a driving block (2) is arranged in the driving groove (83), a spring groove is formed in the driving block (2), a driving spring (1) is arranged in the spring groove, and two ends of the driving spring (1) are respectively contacted with the bottom of the spring groove and the bottom of the driving groove (83);
the spring needle hole consists of a large hole (82) and a small hole (85), the large hole (82) is positioned on the right side of the small hole (85), a step (86) is formed between the large hole (82) and the small hole (85), a spring needle (5) is arranged in the spring needle hole, an ejection stop block (51) is manufactured on the spring needle (5), a spring (6) is sleeved on the spring needle (5), the spring (6) is positioned in the large hole (82), and two ends of the spring (6) are respectively contacted with the step (86) and the ejection stop block (51);
the novel connecting rod structure is characterized by further comprising a first connecting rod (3) and a second connecting rod (4), wherein the first connecting rod (3) and the second connecting rod (4) are arranged on the connecting rod groove (84) through pin shafts (32), and notches (31) are formed at two ends of the first connecting rod (3) and the second connecting rod (4);
the bottom of the sliding block (8) is also provided with a guide rail (81), the guide rail (81) is provided with a lower limiting block (7), a sliding groove with a structure matched with the guide rail (81) is formed in the lower limiting block (7), and the lower limiting block (7) is fixedly arranged on a movable die;
when the die is closed, the lower limiting block (7) is abutted against the driving block (2), a notch (31) at the upper end of the first connecting rod (3) is contacted with a notch at the lower end of the second connecting rod (4), and a notch at the upper end of the second connecting rod (4) is contacted with the tail part of the spring needle (5);
the upper left corner of the driving block (2) is provided with a slope, the slope comprises an initial slope (21) and an ejection slope (22), notches on the first connecting rod (3) and the second connecting rod (4) are all made into slopes, a connecting rod slope (311) is further manufactured on the slope of a notch (31) at the upper end of the first connecting rod (3), and a spring needle slope (52) is further manufactured at the lower end of the tail of the spring needle (5);
an upper limiting block (9) for preventing the ejection stop block (51) from sliding out of the large hole (82) is fixedly arranged at the right end of the ejection pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017237.3A CN109676876B (en) | 2019-01-08 | 2019-01-08 | Connecting rod transmission spring needle mechanism of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017237.3A CN109676876B (en) | 2019-01-08 | 2019-01-08 | Connecting rod transmission spring needle mechanism of injection mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109676876A CN109676876A (en) | 2019-04-26 |
| CN109676876B true CN109676876B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910017237.3A Active CN109676876B (en) | 2019-01-08 | 2019-01-08 | Connecting rod transmission spring needle mechanism of injection mold |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559621B (en) * | 2021-11-24 | 2023-09-29 | 浙江凯华模具有限公司 | Inclined top internal double spring needle back-off structure |
| CN114603796B (en) * | 2021-11-24 | 2023-09-29 | 浙江凯华模具有限公司 | Double spring needle inclined top control mechanism |
| CN114804329B (en) * | 2022-05-26 | 2023-05-26 | 阜阳市颍泉水利建筑有限公司 | In-situ ecological combined purifying tank for river drain outlet |
Citations (5)
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|---|---|---|---|---|
| CN102601942A (en) * | 2012-03-15 | 2012-07-25 | 中山市朗华模具注塑有限公司 | Injection mold ejector mechanism |
| CN105437481A (en) * | 2016-01-22 | 2016-03-30 | 延锋伟世通汽车模具有限公司 | Mold with mechanical reverse ejecting mechanism |
| CN205416260U (en) * | 2015-12-22 | 2016-08-03 | 东莞景丰塑胶制品有限公司 | Collude and mould jelly mold utensil secondary ejection mechanism |
| CN206551385U (en) * | 2017-03-01 | 2017-10-13 | 佳和晟（厦门）模塑科技有限公司 | Rear mold spring jacking block mould |
| CN107718381A (en) * | 2017-11-17 | 2018-02-23 | 中山市华志模具精密设备科技有限公司 | A kind of quick ejecting mechanism for mould |
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2019
- 2019-01-08 CN CN201910017237.3A patent/CN109676876B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601942A (en) * | 2012-03-15 | 2012-07-25 | 中山市朗华模具注塑有限公司 | Injection mold ejector mechanism |
| CN205416260U (en) * | 2015-12-22 | 2016-08-03 | 东莞景丰塑胶制品有限公司 | Collude and mould jelly mold utensil secondary ejection mechanism |
| CN105437481A (en) * | 2016-01-22 | 2016-03-30 | 延锋伟世通汽车模具有限公司 | Mold with mechanical reverse ejecting mechanism |
| CN206551385U (en) * | 2017-03-01 | 2017-10-13 | 佳和晟（厦门）模塑科技有限公司 | Rear mold spring jacking block mould |
| CN107718381A (en) * | 2017-11-17 | 2018-02-23 | 中山市华志模具精密设备科技有限公司 | A kind of quick ejecting mechanism for mould |
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| CN109676876A (en) | 2019-04-26 |
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