CN113771306B - Self-locking core-pulling structure - Google Patents
Self-locking core-pulling structure Download PDFInfo
- Publication number
- CN113771306B CN113771306B CN202110931618.XA CN202110931618A CN113771306B CN 113771306 B CN113771306 B CN 113771306B CN 202110931618 A CN202110931618 A CN 202110931618A CN 113771306 B CN113771306 B CN 113771306B
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- core
- positioning
- pulling
- guide block
- positioning gear
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model discloses a self-locking core-pulling structure which is characterized by comprising a core-pulling head, a core-pulling guide block, a connecting block and a power mechanism, wherein a locking mechanism is arranged on the side surface of the core-pulling guide block, the locking mechanism comprises a driving mechanism and a positioning gear, a positioning rack matched with the positioning gear is arranged on the core-pulling guide block, a reset rod which stretches out elastically is further arranged on the core-pulling guide block, and a limiting tooth matched with the positioning gear is arranged on the reset rod. The utility model has the advantages that: the device has reliable self-locking function, and simultaneously has the capability of automatic adjustment, thereby ensuring the reliability of the core pulling position.
Description
Technical Field
The application relates to the technical field of core pulling mechanisms of dies, in particular to a self-locking core pulling structure.
Background
When the front die of the direct core pulling of the oil cylinder in the die moves, the slide insert cannot be locked by the clamping force and can only be locked by the oil cylinder, and due to the inaccuracy of the oil cylinder, the slide is often caused to retreat under the action of injection molding pressure, so that defects such as multiple glues, beryllium fronts, flash and the like on products are caused. To ameliorate these failures, the row bit must be prevented from backing off.
In the prior art, in order to prevent the core pulling back, the core pulling back is generally realized through a transverse cut-off plane.
For example, in chinese patent literature, patent number CN201720155014X issued on date 3 of 11 in 2017, the application discloses a self-locking core-pulling structure comprising: steering block, loose core, power mechanism, baffle. Wherein, the lower end of the steering block is provided with a chute; the upper end of the core pulling device is provided with a sliding block which is matched with the sliding groove in shape; the power mechanism is connected with the steering block and used for driving the steering block to horizontally move; the baffle is arranged at the upper end of the steering block and is positioned on the same horizontal plane with the power mechanism; the lower end face of the sliding chute is provided with a first self-locking plane, and the sliding block is provided with a second self-locking plane which is matched with the first self-locking plane; after the die is closed, the first self-locking plane and the second self-locking plane are overlapped to form a self-locking plane structure; the self-locking plane structure is used for transferring the force of the loose core to the steering block to the baffle.
For example, in chinese patent literature, patent number CN2019203848720 is issued to patent number CN 12 in 2019 and 3, this application discloses a self-locking core pulling mechanism, including shovel chicken fixed block, shovel chicken, core pulling, be used for locking shovel chicken's shovel chicken retaining member, be used for driving shovel chicken retaining member reciprocating motion's pull rod and be used for driving pull rod reciprocating motion's power supply, shovel chicken on be provided with the cavity that supplies the pull rod to stretch into, shovel chicken retaining member be located the cavity, and this shovel chicken retaining member's both ends run through shovel chicken, shovel chicken fixed block on be provided with the locking hole that supplies shovel chicken retaining member to stretch into, the part that the pull rod is located the cavity be provided with the motion chamber that supplies shovel chicken retaining member reciprocating motion, the both sides wall of motion chamber be provided with the first oblique smooth of relative setting, shovel chicken retaining member's both sides all be provided with the first chute with the first oblique slider adaptation.
The defect of the prior art is that the transverse anti-withdrawal plane is unique to the limiting effect of the core pulling, the deformation condition generated in the use process of the core pulling cannot be adaptively adjusted, the position accuracy of the core pulling is affected, and defects such as multiple glue, lameness, flash and the like on the product can also occur.
Disclosure of Invention
Based on the defects in the prior art, the utility model provides a self-locking core-pulling structure which can have a reliable self-locking effect, has the capability of automatic adjustment and ensures the reliability of the core-pulling position.
In order to achieve the above object, the present utility model adopts the following technical scheme.
The utility model provides a self-locking structure of loosing core, characterized by, including loose core head, loose core guide block, connecting block and power unit, the guide block side of loosing core is equipped with locking mechanism, and locking mechanism includes actuating mechanism and positioning gear, is equipped with the location rack of cooperation positioning gear on the guide block of loosing core, still is equipped with the reset lever that the elasticity stretched on the guide block of loosing core, is equipped with the spacing tooth of cooperation positioning gear on the reset lever.
According to the positioning gear and positioning rack locking mechanism, after the positioning gear is meshed with the positioning rack, the positioning gear is locked to rotate through the elastic extension of the reset rod in a synchronous matching mode, so that the positioning rack is prevented from moving downwards, and a reliable self-locking effect is achieved; when the core-pulling guide block or the core-pulling head deforms or wears to cause errors, the power mechanism can erase the errors upwards, the power mechanism drives the core-pulling guide block to move upwards for a certain distance compared with the standard position, the positioning gear rotates and still can keep the cooperation of the limiting teeth and the positioning gear due to the elastic action of the reset rod, so that self-locking can be kept, the self-locking position has automatic adjusting capability, and the reliability of core pulling is ensured.
Preferably, the driving mechanism comprises a driving oil cylinder and a driving sliding block, wherein the driving oil cylinder and the driving sliding block are arranged vertically on the axis of the core-pulling guide block, the driving sliding block is driven by the driving oil cylinder, the outer end of the driving sliding block is provided with a mounting rod, the positioning gear is rotatably arranged at the outer end of the mounting rod, and the axis of the positioning gear is vertical to the axis of the mounting rod; the axis of the positioning gear is vertical to the axis of the core pulling guide block. The driving oil cylinder can drive the driving sliding block to slide, and the mounting rod is used for mounting the positioning gear, so that the positioning gear is ensured to be reliably in place.
Preferably, the reset rod is an arc rod, an arc groove matched with the reset rod is formed in the core-pulling guide block, and a reset spring matched with the reset rod is arranged in the arc groove. The reset rod extends out along the arc groove in an arc manner, so that the limiting teeth have a rotating radian, and the reset rod has a better matching effect when the positioning gear and the positioning rack generate position deviation compared with the reference position, and the reliability of limiting of the limiting teeth is improved.
Preferably, a positioning groove is formed in the side face of the core-pulling guide block, the positioning gear can extend into the positioning groove, the positioning rack is located at the bottom of the positioning groove, and the positioning rack is parallel to the axis of the core-pulling guide block. The setting of convenient location rack, reset lever makes the slip direction of loose core guide block keep and control more easily.
Preferably, the reset rod corresponds to the lower side of the positioning rack, and after the positioning gear is meshed with the positioning rack, the limiting teeth correspond to a semicircle on one side of the positioning gear facing the reset rod. The positioning gear can be blocked by the limiting teeth when rotating downwards, and the upward rotation of the positioning gear can still be kept, so that the limiting teeth and the reset rod are matched with the positioning rack to play a one-way limiting role on the positioning gear, and the stop of core pulling is realized.
Preferably, the limiting teeth comprise transition surfaces obliquely arranged towards the driving mechanism, and the other sides of the transition surfaces are provided with hook parts corresponding to the positioning gears. The cooperation of the limiting teeth and the positioning gear is improved through the bent hook part.
Preferably, the hook portion includes a concave arc surface disposed opposite the positioning rack. The limiting effect of the hook part is improved.
Preferably, a transition cambered surface is arranged between the tooth shape on the positioning rack and the positioning rack, and a transition fillet is arranged on the tooth shape of the positioning rack; the tooth-shaped end part of the positioning gear is provided with an outwards convex arc surface. The tooth-shaped end surfaces of the positioning rack and the positioning gear are prevented from being meshed, and the reliability of jacking and meshing of the positioning gear is ensured.
The utility model has the following beneficial effects: the limiting teeth and the positioning racks are synchronously matched to lock the positioning gears to rotate, so that the positioning racks are prevented from moving downwards, and a reliable self-locking effect is achieved; when the core-pulling guide block or the core-pulling head deforms or wears to cause errors, the power mechanism can erase the errors upwards, the power mechanism drives the core-pulling guide block to move upwards for a certain distance compared with the standard position, the positioning gear rotates and still can keep the cooperation of the limiting teeth and the positioning gear due to the elastic action of the reset rod, so that self-locking can be kept, the self-locking position has automatic adjusting capability, and the reliability of core pulling is ensured.
Drawings
Fig. 1 is a schematic diagram of the structure of the utility model.
Fig. 2 is an enlarged schematic view at a in fig. 1.
In the figure: the core-pulling head 1 is connected with the core-pulling guide block 2, the power mechanism 4 of the connecting block 3 drives the oil cylinder 5 to drive the sliding block 6 to install the rod 7, the positioning gear 8, the positioning rack 9, the positioning groove 10, the transition circular arc surface 11, the circular arc surface 13, the reset rod 14, the limiting teeth 15, the circular arc groove 16, the reset spring 17, the transition surface 18, the hook part 19 and the concave cambered surface 20.
Detailed Description
The utility model is further illustrated in the following, in conjunction with the accompanying drawings and specific embodiments.
Examples
As shown in fig. 1 and 2, a self-locking core-pulling structure comprises a core-pulling head 1, a core-pulling guide block 2, a connecting block 3 and a power mechanism 4, wherein the power mechanism 4 adopts an oil cylinder, the oil cylinder is connected with the core-pulling guide block 2 through the connecting block 3, and the core-pulling head 1 is positioned at the outer end of the core-pulling guide block 2. The side face of the core-pulling guide block 2 is provided with a locking mechanism, the locking mechanism comprises a driving mechanism and a positioning gear 8, the driving mechanism comprises a driving oil cylinder 5 and a driving sliding block 6 which are arranged perpendicular to the axis of the core-pulling guide block 2, the driving sliding block 6 is driven by the driving oil cylinder 5, the outer end of the driving sliding block 6 is provided with a mounting rod 7, the positioning gear 8 is rotatably arranged at the outer end of the mounting rod 7, and the axis of the positioning gear 8 is perpendicular to the axis of the mounting rod 7; the axis of the positioning gear 8 is vertical to the axis of the core pulling guide block 2. The core pulling guide block 2 is provided with a positioning rack 9 matched with the positioning gear 8, the side surface of the core pulling guide block 2 is provided with a positioning groove 10, the positioning gear 8 can extend into the positioning groove 10, the positioning rack 9 is positioned at the bottom of the positioning groove 10, and the positioning rack 9 is parallel to the axis of the core pulling guide block 2. A transition cambered surface 11 is arranged between the tooth shape on the positioning rack 9 and the positioning rack 9, and a transition fillet 12 is arranged on the tooth shape of the positioning rack 9; the tooth-shaped end of the positioning gear 8 is provided with an outwards convex arc surface 13. The loose core guide block 2 is also provided with an elastically extending reset rod 14, and the reset rod 14 is provided with a limiting tooth 15 matched with the positioning gear 8. The reset rod 14 is an arc rod, an arc groove 16 matched with the reset rod 14 is arranged in the core pulling guide block 2, and a reset spring 17 matched with the reset rod 14 is arranged in the arc groove 16. The reset lever 14 corresponds to the lower side of the positioning rack 9, and after the positioning gear 8 and the positioning rack 9 are meshed, the limit teeth 15 correspond to a semicircle on the side of the positioning gear 8 facing the reset lever 14. The limiting teeth 15 comprise a transition surface 18 arranged obliquely towards the driving mechanism, and the transition surface 18 is an inclined surface. The other side of the transition surface 18 is provided with a hook 19 corresponding to the positioning gear 8. The hook portion 19 includes a concave cambered surface 20 provided opposite to the positioning rack 9.
The driving oil cylinder 5 can drive the driving sliding block 6 to slide, the installation rod 7 is used for installing the positioning gear 8, the positioning gear 8 is guaranteed to be reliably in place, after the positioning gear 8 is meshed with the positioning rack 9, the positioning gear 14 stretches out through the elasticity of the positioning gear 14, the positioning gear 14 stretches out along the circular arc groove 16 in a circular arc mode, and therefore the limiting teeth 15 are enabled to have rotating radians, and when the positioning gear 8 and the positioning rack 9 in the reference position generate position deviation, the positioning gear 14 has better matching effect, and the limiting reliability of the limiting teeth 15 is improved. The limiting teeth 15 and the positioning racks 9 are synchronously matched to lock the positioning gears 8 to rotate, the matched action of the limiting teeth 15 and the positioning gears 8 is improved through the hooks 19, the downward rotation of the positioning gears 8 can be blocked by the limiting teeth 15, the upward rotation of the positioning gears 8 can still be kept, the limiting teeth 15 and the reset rod 14 are matched with the positioning racks 9 to play a one-way limiting action on the positioning gears 8, and the stop of core pulling is realized; thereby preventing the positioning rack 9 from moving downwards and playing a reliable self-locking role; when the core-pulling guide block 2 or the core-pulling head 1 is deformed or worn to cause errors, the power mechanism 4 can erase the errors upwards, the power mechanism 4 drives the core-pulling guide block 2 to move upwards for a certain distance compared with the standard position, the positioning gear 8 rotates, and due to the elastic action of the reset rod 14, the cooperation of the limiting teeth 15 and the positioning gear 8 can still be kept, so that self-locking can be kept, the self-locking position has automatic adjusting capability, and the reliability of core pulling is ensured.
Claims (4)
1. The self-locking core-pulling structure is characterized by comprising a core-pulling head, a core-pulling guide block, a connecting block and a power mechanism, wherein a locking mechanism is arranged on the side surface of the core-pulling guide block, the locking mechanism comprises a driving mechanism and a positioning gear, a positioning rack matched with the positioning gear is arranged on the core-pulling guide block, a reset rod which stretches out elastically is further arranged on the core-pulling guide block, a limit tooth matched with the positioning gear is arranged on the reset rod, the reset rod is an arc rod, the reset rod corresponds to the lower side of the positioning rack, after the positioning gear and the positioning rack are meshed, the limit tooth corresponds to a semicircle of the positioning gear towards one side of the reset rod, the driving mechanism comprises a driving cylinder and a driving slider which are arranged vertically to the axis of the core-pulling guide block, the driving slider is driven by the driving cylinder, the outer end of the driving slider is provided with a mounting rod, the positioning gear is rotationally arranged at the outer end of the mounting rod, and the axis of the positioning gear is vertical to the axis of the mounting rod; the axis of positioning gear is perpendicular the axis of guide block of loosing core, is equipped with the circular arc groove of cooperation reset lever in the guide block of loosing core, is equipped with the reset spring of cooperation reset lever in the circular arc groove, the side of guide block of loosing core is equipped with the constant head tank, and positioning gear can stretch into in the constant head tank, and the positioning rack is located the tank bottom of constant head tank, and the axis setting of the parallel guide block of loosing core of positioning rack.
2. The self-locking core pulling structure according to claim 1, wherein the limiting teeth comprise transition surfaces obliquely arranged towards the driving mechanism, and hooks corresponding to the positioning gears are arranged on the other sides of the transition surfaces.
3. The self-locking core pulling structure according to claim 2, wherein the hook portion comprises a concave cambered surface arranged opposite to the positioning rack.
4. The self-locking core-pulling structure according to claim 1, wherein a transitional cambered surface is arranged between the tooth shape on the positioning rack and the positioning rack, and a transitional fillet is arranged on the tooth shape of the positioning rack; the tooth-shaped end part of the positioning gear is provided with an outwards convex arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110931618.XA CN113771306B (en) | 2021-08-13 | 2021-08-13 | Self-locking core-pulling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110931618.XA CN113771306B (en) | 2021-08-13 | 2021-08-13 | Self-locking core-pulling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113771306A CN113771306A (en) | 2021-12-10 |
| CN113771306B true CN113771306B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110931618.XA Active CN113771306B (en) | 2021-08-13 | 2021-08-13 | Self-locking core-pulling structure |
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| Country | Link |
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| CN (1) | CN113771306B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6093015A (en) * | 1999-01-11 | 2000-07-25 | D-M-E Company | Mold core positioning device |
| CN201192722Y (en) * | 2008-05-15 | 2009-02-11 | 林高良 | Electric pulling core pulling rivet gun |
| CN203418107U (en) * | 2013-09-03 | 2014-02-05 | 深圳市鑫灏源电子科技实业有限公司 | Mold core-pulling mechanism |
| CN207415892U (en) * | 2017-11-20 | 2018-05-29 | 东莞市欧若拉精密塑料制品有限公司 | Arc-shaped core pulling mechanism and mold |
| CN108356252A (en) * | 2018-04-11 | 2018-08-03 | 无锡福兰德科技有限公司 | A kind of convertible casting Oil cylinder side core-pulling integral mechanism |
| CN108748894A (en) * | 2018-05-21 | 2018-11-06 | 索奕双 | A kind of Mold Core-pulling Mechanism and core pulling method for plastic bend tube |
| CN212071764U (en) * | 2020-05-06 | 2020-12-04 | 山东兖煤化工装备工程有限公司 | Heat exchanger device of loosing core |
| CN112356401A (en) * | 2020-11-12 | 2021-02-12 | 海宁鐵三角科技有限公司 | Mold for processing internal thread of plastic part and core pulling |
| CN112928874A (en) * | 2020-12-28 | 2021-06-08 | 吕骏元 | Pre-core-pulling mechanism on full-automatic motor stator assembly production line |
-
2021
- 2021-08-13 CN CN202110931618.XA patent/CN113771306B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6093015A (en) * | 1999-01-11 | 2000-07-25 | D-M-E Company | Mold core positioning device |
| CN201192722Y (en) * | 2008-05-15 | 2009-02-11 | 林高良 | Electric pulling core pulling rivet gun |
| CN203418107U (en) * | 2013-09-03 | 2014-02-05 | 深圳市鑫灏源电子科技实业有限公司 | Mold core-pulling mechanism |
| CN207415892U (en) * | 2017-11-20 | 2018-05-29 | 东莞市欧若拉精密塑料制品有限公司 | Arc-shaped core pulling mechanism and mold |
| CN108356252A (en) * | 2018-04-11 | 2018-08-03 | 无锡福兰德科技有限公司 | A kind of convertible casting Oil cylinder side core-pulling integral mechanism |
| CN108748894A (en) * | 2018-05-21 | 2018-11-06 | 索奕双 | A kind of Mold Core-pulling Mechanism and core pulling method for plastic bend tube |
| CN212071764U (en) * | 2020-05-06 | 2020-12-04 | 山东兖煤化工装备工程有限公司 | Heat exchanger device of loosing core |
| CN112356401A (en) * | 2020-11-12 | 2021-02-12 | 海宁鐵三角科技有限公司 | Mold for processing internal thread of plastic part and core pulling |
| CN112928874A (en) * | 2020-12-28 | 2021-06-08 | 吕骏元 | Pre-core-pulling mechanism on full-automatic motor stator assembly production line |
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| Publication number | Publication date |
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| CN113771306A (en) | 2021-12-10 |
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