CN109203384B - Lever side core-pulling mechanism - Google Patents
Lever side core-pulling mechanism Download PDFInfo
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- CN109203384B CN109203384B CN201811412760.8A CN201811412760A CN109203384B CN 109203384 B CN109203384 B CN 109203384B CN 201811412760 A CN201811412760 A CN 201811412760A CN 109203384 B CN109203384 B CN 109203384B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 230000007704 transition Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Classifications
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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
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a lever side core-pulling mechanism which comprises a movable template, a lever with an arc chute at the left end, a fixed template and a fixed template bottom plate for fixing the fixed template, wherein the movable template can move towards or away from the fixed template. The lever rotates and is fixedly installed on a lever fulcrum at the top of the movable template, a side mold core is arranged in the arc chute at the left end of the lever, one end of the side mold core is slidably installed in the arc chute, and the other end of the side mold core extends out of a side mold core hole at the top of the driven template and enters a mold cavity inside the movable template to serve as the mold core. According to the invention, the small hole is formed on the side surface of the plastic part by the side core, and the arc chute on the lever guides and drives the side core to move up and down in the pin hole while the lever turns over, so that the side core pulling or resetting is realized. The lever side core-pulling mechanism has the advantages of simple integral structure and convenient operation, and can quickly complete side core-pulling and avoid damaging a plastic part.
Description
Technical Field
The invention belongs to the field of high polymer material forming and processing, and relates to a lever side core-pulling mechanism.
Background
The commonly used side core-pulling mechanism adopts an inclined pin and a slide block mechanism, or an inclined slide block or a gear rack mechanism or hydraulic core-pulling and the like. Some of the mechanisms are complex, such as angle pin and slide block mechanisms, and have high cost, such as hydraulic core pulling. The hydraulic core pulling can realize the side core pulling in a longer distance. To the side of shorter distance loose core, this application provides a lever side mechanism of loosing core, simple structure, and the mechanism is nimble, and the side is loosed core efficiently.
Disclosure of Invention
The invention provides a low-cost lever side core-pulling mechanism with simple structure, flexible mechanism and high side core-pulling efficiency, aiming at overcoming the technical problems of complex structure and high cost of the side core-pulling mechanism in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a lever side core-pulling mechanism comprises a movable template, a lever with a circular arc sliding groove at the left end of a side mold core, a fixed template and a fixed mold bottom plate for fixing the fixed template, wherein the movable template can move left and right relative to the fixed template.
The top of the movable mould plate is sequentially provided with a side core hole in the vertical direction, a lever fulcrum and a groove with a spring inside from left to right, and a cavity is arranged in the movable mould plate. The side core hole is upward in opening and communicated with the cavity at the bottom, one end of the spring is fixedly connected with the bottom of the groove, the other end of the spring is fixedly connected with the lever, and the spring has downward tension on the lever when the movable die plate and the fixed die plate are completely closed.
The lever is arc and the arc opening upwards, and the lever is articulated with the lever fulcrum, and the one end slidable mounting of side core is in the circular arc spout, and the other end of side core stretches out from side core hole and gets into the die cavity and be used as side core, clearance fit between side core and the side core hole. The radius of the arc chute is equal to the distance between the fulcrum of the lever and the upper left end of the arc chute, the side core can slide along the arc chute along with the turning of the lever, and meanwhile, the side core does upward or downward linear motion in the side core hole, so that the side core pulling or resetting is realized.
The top of the fixed template is fixedly provided with a convex block, the top of the convex block rolls to fixedly install a roller, when the movable template and the fixed template start to be separated from the mold until the mold is removed sufficiently, the roller is always in contact with the lever and applies downward pressure to the lever.
After the side core pulling is finished, in order to avoid the side core from deviating from the side core hole due to the fact that the side core continuously slides along with the arc sliding groove, further, after the side core pulling is finished, the lower end of the side core completely leaves the cavity, and the upper end of the side core is just positioned at the right lower end of the arc sliding groove.
Furthermore, a second groove is formed in the top of the movable mould plate, the side core hole is located at the bottom of the second groove and communicated with the mould cavity, a core sleeve is placed in the second groove, a through hole in the vertical direction is formed in the core sleeve, the through hole is coaxial with the side core hole and has a corresponding size, and the bottom of the side core is inserted into the side core hole from the through hole and extends into the mould cavity. Transition fit between core sleeve and the second recess, clearance fit between through-hole on the core sleeve, the side core hole in the second recess and the side core, core sleeve have the guide effect to side core hole on the one hand, and on the other hand avoids leaking the material, and core sleeve has the effect of protection to the movable mould board simultaneously, and core sleeve has worn and torn removable.
Further, when the movable die plate and the fixed die plate are separated to be sufficiently demoulded, the spring is in a compressed state. The spring under the compression state exerts ascending elasticity to the lever right part, combines the effect of gyro wheel to be convenient for the movable mould board and resets again, makes the compound die more convenient laborsaving.
Preferably, the roller (7) has a downward acting force on the lever (1) when the movable mould plate (1) and the fixed mould plate (8) are completely matched. The spring 6 and the roller 7 act together on the lever 5, so that the lever 5 is more stable during the molding process.
The beneficial effects obtained by the invention are as follows: 1) when the movable mould plate and the fixed mould plate are completely closed, the spring has downward pull force on the lever, so that the side mould core can not freely move up and down in the side mould core hole. 2) According to the invention, small holes are formed in the side surface of the plastic part by the side core, the lever arranged on the movable template is turned by the collision of the roller arranged on the fixed template, the arc chute on the lever guides and drives the side core to move up and down in the pin hole while the lever is turned, and the side core is laterally loose when moving upwards. Overall structure is simple, convenient operation can accomplish the side fast and loose core and avoid damaging and mould the piece.
Drawings
FIG. 1 is a schematic view of a lever side core-pulling mechanism in an embodiment of the invention
In the figure: 1. the plastic part comprises a movable mould plate, 2 parts of plastic parts, 3 parts of side mould cores, 4 parts of arc chutes, 5 parts of levers, 6 parts of springs, 7 parts of rollers, 8 parts of fixed mould plates and 9 parts of fixed mould bottom plates.
Detailed Description
The invention is described in more detail below with reference to the following examples:
the present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Referring to fig. 1, the lever side core pulling mechanism comprises a movable mould plate 1, a lever 5 with an arc sliding groove at the left end, a fixed mould plate 8 and a fixed mould bottom plate 9 for fixing the fixed mould plate, wherein the fixed mould plate 8 is fixedly installed through the fixed mould bottom plate 9, and the movable mould plate 1 can move towards or away from the fixed mould plate 8.
The top of the movable mould plate 1 is sequentially provided with a side core hole, a lever fulcrum and a groove with an upward opening in the vertical direction from left to right, and a cavity for molding the plastic part 2 is arranged in the movable mould plate. The side core hole is opened upwards, the bottom of the side core hole is communicated with the cavity, a spring 6 is arranged in the groove, one end of the spring 6 is fixedly connected with the bottom of the groove, the other end of the spring 6 extends out of the groove and is fixedly connected with the lever 5, and the spring 6 has downward pulling force on the lever 5 under the condition that the movable die plate 1 and the fixed die plate 8 are completely closed.
The lever 5 is arc-shaped, the arc-shaped opening is upward, the lever 5 is fixedly installed on a lever fulcrum in a rotating mode, and the lever can turn clockwise or anticlockwise on a vertical plane around the lever fulcrum. A side mold core 3 is arranged in the arc chute at the left end of the lever, one end of the side mold core 3 is slidably mounted in the arc chute through a pin, the other end of the side mold core 3 extends out of a side mold core hole to enter the cavity to serve as the side mold core, and the side mold core is in clearance fit with the side mold core hole. More specifically, the top of the movable mould plate 1 is provided with a second groove, the side core hole is positioned at the bottom of the second groove and communicated with the mould cavity, a core sleeve is placed in the second groove, a through hole in the vertical direction is arranged in the core sleeve, the through hole is coaxial with the side core hole and has a corresponding size, and the bottom of the side core is inserted into the side core hole from the through hole and extends into the mould cavity. The core sleeve is in transition fit with the second groove, and the through hole in the core sleeve, the side core hole in the second groove and the side core 3 are in clearance fit.
The radius of circular arc spout equals the distance between lever fulcrum and the upper left end tip of circular arc spout, and along with the upset of lever 5, side core 3 can slide along the circular arc spout, and vertical ascending or vertical decurrent rectilinear motion is done to side core 3 in side core hole simultaneously, and then realizes that the side is loosed core or resets. After the side core pulling is completed, the lower end of the side core 3 completely leaves the cavity, and the upper end of the side core 3 is just positioned at the right lower end part of the arc chute.
The top of the fixed die plate 8 is fixedly provided with a convex block, the top of the convex block is fixedly provided with a roller 7 in a rolling manner, when the movable die plate 1 and the fixed die plate 8 are closed, the roller 7 has downward acting force on the lever 5, when the movable die plate 1 and the fixed die plate 8 begin to be separated from the die until the demolding is enough, the roller 7 is always in contact with the lever 5, and the roller 7 applies downward pressure on the lever 5. When the movable die plate 1 and the fixed die plate 8 are separated to be sufficiently demolded, the spring 6 is in a compressed state. According to the lever-side core-pulling mechanism of the embodiment, when the plastic part 2 is molded, the part of the side core 3 extending into the cavity is used as a core for molding the small hole of the plastic part 2. After the mold is opened, the movable mold plate 1 and the fixed mold plate 8 begin to be separated, meanwhile, the lever 5 is in contact with the roller 7, the roller 7 can only roll and cannot move because of being arranged on a convex block of the fixed mold plate 8, therefore, the lever 5 rotates clockwise around a lever fulcrum on the movable mold plate 1 at a small angle (at the moment, the spring 6 is compressed), the rotating angle is determined along with the length of the core pulling distance, the side core pulling distance is short, the rotating angle of the lever 5 is small, and otherwise, the rotating angle is large. And the lever is turned clockwise, and the side core 3 on the movable mould plate 1 is driven to move upwards in the side core hole through the arc chute at the left end, so that the side core pulling is realized. After the side core pulling is finished, the side core is completely pulled out from the small hole of the plastic part, then the side core does not move upwards any more, and when the movable mould plate and the fixed mould plate are separated to a certain distance and are sufficiently demoulded, the plastic part is ejected by the ejection mechanism. The right end of the lever 5 is long enough to ensure that the lever 5 does not leave the roller 7 after contacting the roller 7, namely the roller 7 presses the lever 5 all the time, so that the side core 3 cannot enter a small hole of a plastic part at will after finishing side core pulling, and the effectiveness of the side core pulling action is ensured.
When the movable mould plate 1 resets (namely, when the movable mould plate 1 and the fixed mould plate 8 are matched), because the right end of the lever 5 is always pressed by the roller 7 and does not leave the roller 7, when the movable mould plate 1 moves rightwards, the lever 5 rotates around the axis thereof to turn over anticlockwise at a small angle, so as to drive the side mould core 3 to move downwards in the side mould core hole, thereby completing the resetting, and the movable mould plate 1 and the fixed mould plate 8 are also matched.
In order to make the demolding smooth and reliable, the lever-side core-pulling mechanism can be symmetrically installed.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. The utility model provides a lever side mechanism of loosing core which characterized in that: the die comprises a movable die plate (1), a side die core (3), a lever (5) with an arc chute at the left end, a fixed die plate (8) and a fixed die bottom plate (9) for fixing the fixed die plate, wherein the movable die plate (1) can move left and right relative to the fixed die plate (8);
the top of the movable mould plate (1) is sequentially provided with a side core hole in the vertical direction, a lever fulcrum and a groove with a spring (6) arranged inside from left to right, and a cavity is arranged in the movable mould plate (1); the opening of the side core hole is upward, the bottom of the side core hole is communicated with the cavity, one end of the spring (6) is fixedly connected with the bottom of the groove, the other end of the spring (6) is fixedly connected with the lever (5), and the spring (6) has downward tension on the lever (5) under the condition that the movable template and the fixed template are completely closed;
the lever (5) is arc-shaped, the arc-shaped opening is upward, the lever (5) is hinged with a lever fulcrum, one end of the side mold core (3) is slidably installed in an arc chute of the lever (5), the other end of the side mold core (3) extends out of a side mold core hole to enter a cavity, and the side mold core is in clearance fit with the side mold core hole; the radius of the arc chute is equal to the distance between the fulcrum of the lever and the upper left end of the arc chute, the side core (3) can slide along the arc chute along with the overturning of the lever (5), and meanwhile, the side core makes a straight line motion vertically upwards or vertically downwards in the side core hole, so that the side core pulling or resetting is realized;
the top of the fixed template (8) is fixedly provided with a convex block, the top of the convex block is fixedly provided with a roller (7) in a rolling manner, and when the movable template (1) and the fixed template (8) are demoulded enough from the beginning of parting, the roller is always contacted with the lever and applies downward pressure to the lever;
after the side core pulling is finished, the lower end of the side core (3) completely leaves the cavity, and the upper end of the side core (3) is just positioned at the right lower end of the arc chute;
the top of the movable template (1) is provided with a second groove, the side core hole is positioned at the bottom of the second groove and communicated with the cavity, a core sleeve is placed in the second groove, a through hole in the vertical direction is arranged in the core sleeve, the through hole is coaxial with the side core hole and has a size corresponding to that of the side core hole, and the bottom of the side core (3) is inserted into the side core hole from the through hole and extends into the cavity; the core sleeve is in transition fit with the second groove, and the through hole in the core sleeve, the side core hole in the second groove and the side core are in clearance fit.
2. The lever side core pulling mechanism according to claim 1, wherein: when the movable mould plate (1) and the fixed mould plate (8) are separated to be demoulded enough, the spring (6) is in a compressed state.
3. The lever side core pulling mechanism according to claim 1, wherein: when the movable mould plate (1) and the fixed mould plate (8) are completely closed, the roller (7) has downward acting force on the lever (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811412760.8A CN109203384B (en) | 2018-11-23 | 2018-11-23 | Lever side core-pulling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811412760.8A CN109203384B (en) | 2018-11-23 | 2018-11-23 | Lever side core-pulling mechanism |
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| Publication Number | Publication Date |
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| CN109203384A CN109203384A (en) | 2019-01-15 |
| CN109203384B true CN109203384B (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811412760.8A Active CN109203384B (en) | 2018-11-23 | 2018-11-23 | Lever side core-pulling mechanism |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112388915A (en) * | 2020-11-24 | 2021-02-23 | 广东美的精密模具科技有限公司 | Core pulling assembly and mold |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357993A (en) * | 2011-10-13 | 2012-02-22 | 浙江凯华模具有限公司 | Progressive de-molding mechanism for drag hook of injection mold |
| CN104908241A (en) * | 2015-06-15 | 2015-09-16 | 台州市新立模塑有限公司 | Oblique core pulling lever-type reset locking mechanism of injection molding mold |
| CN105383014A (en) * | 2015-11-24 | 2016-03-09 | 重庆瑞霆塑胶有限公司 | Core pulling mechanism device for idler wheel limiting spring for injection molding |
| CN105397998A (en) * | 2015-11-23 | 2016-03-16 | 重庆瑞霆塑胶有限公司 | Lever compression spring core-pulling mechanism |
-
2018
- 2018-11-23 CN CN201811412760.8A patent/CN109203384B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357993A (en) * | 2011-10-13 | 2012-02-22 | 浙江凯华模具有限公司 | Progressive de-molding mechanism for drag hook of injection mold |
| CN104908241A (en) * | 2015-06-15 | 2015-09-16 | 台州市新立模塑有限公司 | Oblique core pulling lever-type reset locking mechanism of injection molding mold |
| CN105397998A (en) * | 2015-11-23 | 2016-03-16 | 重庆瑞霆塑胶有限公司 | Lever compression spring core-pulling mechanism |
| CN105383014A (en) * | 2015-11-24 | 2016-03-09 | 重庆瑞霆塑胶有限公司 | Core pulling mechanism device for idler wheel limiting spring for injection molding |
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| CN109203384A (en) | 2019-01-15 |
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Effective date of registration: 20231208 Address after: 315000 No. 236-2 Keyuan North Road, Taoyuan Street, Ninghai County, Ningbo City, Zhejiang Province (self declared) Patentee after: Ningbo Baichuan Mould Co.,Ltd. Address before: 28-6, Building 3, No. 22 Daxue City South Road, Huxi Street, High tech Zone, Shapingba District, Chongqing, 400000 Patentee before: Zhitong (Chongqing) Technology Achievement Transformation Service Co.,Ltd. Effective date of registration: 20231208 Address after: 28-6, Building 3, No. 22 Daxue City South Road, Huxi Street, High tech Zone, Shapingba District, Chongqing, 400000 Patentee after: Zhitong (Chongqing) Technology Achievement Transformation Service Co.,Ltd. Address before: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1 Patentee before: CHANGZHOU University |