CN111376454A - Supplementary ejecting structure of mould die sinking - Google Patents
Supplementary ejecting structure of mould die sinking Download PDFInfo
- Publication number
- CN111376454A CN111376454A CN202010484983.6A CN202010484983A CN111376454A CN 111376454 A CN111376454 A CN 111376454A CN 202010484983 A CN202010484983 A CN 202010484983A CN 111376454 A CN111376454 A CN 111376454A
- Authority
- CN
- China
- Prior art keywords
- block
- swing
- swing block
- ejector pin
- straight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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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- 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
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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
- B29C45/44—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
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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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/66—Mould opening, closing or clamping devices mechanical
-
- 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
- B29C2045/4492—Removing or ejecting moulded articles for undercut articles preventing damage or deformation of undercut articles during ejection
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a mold opening auxiliary ejection structure which comprises a mold body, and an ejector plate and a bottom plate which are sequentially arranged on one side of the mold body, wherein a through groove is formed in the ejector plate, a swing block is arranged in the through groove, one end of the bottom of the swing block extends downwards to form a first supporting leg, the other end of the bottom of the swing block extends downwards to form a second supporting leg, a first cushion block is arranged in the ejector plate, a second cushion block is arranged on the bottom plate, the swing block is rotatably arranged at the ejector plate and has a tendency of overturning towards the second cushion block, a straight ejector pin and an inclined ejector pin are arranged in the mold body, the bottom of the straight ejector pin is connected with the upper end of the swing block, the straight ejector pin and the first cushion block are positioned at the same end of the swing block, and the bottom of the inclined ejector pin is connected with the ejector plate. The invention provides a mold opening auxiliary ejection structure which is simple in structure, can eject and demold a product and is convenient for a manipulator to take the product.
Description
Technical Field
The invention relates to the technical field of molds, in particular to an auxiliary ejection structure for mold opening of a mold.
Background
The back-off refers to a structure of a flange, a hook buckle or a convex rib in the injection molding product, wherein the core-pulling demoulding direction of the structure is intersected with the opening and closing direction of the mold; when the injection molding product is applied, one surface facing the outside is called an outer side, and the other surface opposite to the outer side is called an inner side; according to the position, the reverse buckle is composed of an outer reverse buckle and an inner reverse buckle. The depth or length of the undercut is greater than three times the wall thickness of the product and is called deep undercut, and the deep undercut on the inside of the product is called inner deep undercut for short.
In actual mass production, the injection molding part containing the inner deep reverse buckle and having high appearance requirement is damaged if the product is directly taken by a mechanical arm because the product is held on the oblique top, and the reject ratio of the product is more than 40%, so that the product is taken by manual assistance, the processing is time-consuming and labor-consuming, and the cost is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the mold opening auxiliary ejection structure is provided, the structure is simple, the product can be ejected out of the mold, and the mechanical arm is convenient to take the product.
In order to achieve the above object, the present invention provides the following technical solutions.
An auxiliary ejection structure for die sinking of a die comprises a die body, an ejector plate and a bottom plate which are sequentially arranged on one side of the die body, a through groove is arranged on the thimble plate, a swing block is arranged in the through groove, one end of the bottom of the swing block extends downwards to form a first support leg, the other end of the bottom of the swinging block extends downwards to form a second supporting leg, a first cushion block matched with the first supporting leg is arranged in the ejector plate, the bottom plate is provided with a second cushion block matched with the second support leg, the swinging block is rotatably arranged in the through groove, the swinging block has the tendency of turning towards the second cushion block, a straight thimble and an inclined thimble are arranged in the die body, the bottom of the straight thimble is connected with the upper end of the swinging block, the straight thimble and the first cushion block are positioned on the same side of the swinging block, and the bottom of the inclined thimble is connected with the thimble plate.
The invention has the beneficial effects that: the ejection structure of the invention is characterized in that the swinging block is arranged, when the mold is opened, the sliding block in the mold firstly performs core pulling, the ejector plate is kept still, then the ejector plate is ejected relative to the bottom plate, the straight ejector pin is ejected and the inclined ejector pin is separated from the reverse buckle along with the ejection of the ejector plate of the mold, and the swinging block is ejected along with the ejector plate, so that the second support leg on the swinging block is separated from the second cushion block on the bottom plate, because the swinging block has the tendency of turning towards the second cushion block, the swinging block turns towards the second cushion block, and the end matched with the straight ejector is tilted, so that the straight ejector pin is further ejected, the straight ejector pin drives the product to further move to separate from the inclined ejector pin, the mechanical arm is convenient to take the product, the automatic taking of the product is completed, the continuous production can be realized, and the problem that the defect rate is difficult to control due to the scraping of the product when the manual taking of the product is solved, and for inefficacy risk and the unstability that adopts the spring structure to drive, pure mechanical system is adopted in this application, and stability is higher to through the bottom dismouting, be convenient for maintain.
As an improvement of the invention, a clamping groove is formed in the side wall of the swing block, the bottom of the straight thimble extends into the clamping groove, a lower stop block connected with the straight thimble is arranged in the clamping groove, an upper stop block positioned above the swing block is further arranged on the straight thimble, and the straight thimble is connected with the swing block through the matching of the upper stop block and the lower stop block. Through the improvement, the swinging block can be connected with the straight thimble.
As an improvement of the invention, a movable space for the swinging block to rotate is formed between the upper stop block and the swinging block.
As an improvement of the invention, the swing block is rotatably arranged on the ejector plate through a rotating shaft, and the center of gravity of the swing block is positioned on one side of the swing block provided with the second cushion block, so that the swing block has a tendency of turning towards the second cushion block.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a perspective view at a in fig. 1 of the present invention.
Fig. 3 is a schematic view of the present invention in a mold clamping state.
FIG. 4 is a schematic view of the present invention in the mold-open state.
In the figure, 1, a die body; 2. an ejector plate; 3. a base plate; 4. a swing block 41 and a first support leg; 42. a second leg; 5. a rotating shaft; 6. a first cushion block; 7. a second cushion block; 8. a straight thimble; 9. an inclined thimble; 10. a lower stop block; 11. and an upper stop block.
Detailed Description
The invention is further explained with reference to the drawings.
Referring to fig. 1 to 4, the mold opening auxiliary ejection structure includes a mold body 1, and an ejector plate 2 and a bottom plate 3 sequentially disposed on one side of the mold body 1, wherein a through groove is disposed on the ejector plate 2, a swing block 4 is disposed in the through groove, one end of the bottom of the swing block 4 extends downward to form a first support leg 41, the other end of the bottom of the swing block 4 extends downward to form a second support leg 42, a first cushion block 6 matched with the first support leg 41 is disposed in the ejector plate 2, a second cushion block 7 matched with the second support leg 42 is disposed on the bottom plate 3, the swing block 4 is rotatably mounted at the ejector plate 2, the swing block 4 has a tendency of turning over to the second cushion block 7, a mounting hole is disposed on the swing block 4, a rotating shaft 5 is disposed in the mounting hole, and the swing block 4 is rotatably mounted on the ejector plate 2 through the rotating shaft 5, the first supporting leg 41 is located on one side of the through hole, the second supporting leg 42 is located on the other side of the through hole, the center of gravity of the swing block 4 is located on one side of the swing block 4 where the second cushion block 7 is arranged, so that the swing block 4 has a tendency of turning over towards the second cushion block 7, in the embodiment, the ejector plate 2 comprises an upper plate and a lower plate, wherein the straight ejector pin 8 is connected with the upper plate, and the first cushion block 6 is arranged on the lower plate.
The swing block 4 is supported through the matching of a first cushion block 6 and a second cushion block 7, so that the swing block 4 cannot be overturned and shaken, a straight thimble 8 and an inclined thimble 9 are arranged in the die body 1, wherein the bottom of the straight thimble 8 is connected with the upper end of the swing block 4, the straight thimble 8 and the first cushion block 6 are positioned at the same side of the swing block 4, specifically, the side wall of the swing block 4 is provided with a clamping groove, the bottom of the straight thimble 8 extends into the clamping groove, a lower baffle 10 connected with the straight thimble 8 is arranged in the clamping groove, the straight thimble 8 is also provided with an upper baffle 11 positioned above the swing block 4, the straight thimble 8 is connected with the swing block 4 through the matching of the upper baffle 11 and the lower baffle 10, the upper baffle 11 and the lower baffle 10 are both square, so that the assembly and disassembly are convenient, and the movable space for the rotation of the swing block 4 is formed between the upper baffle 11 and the swing block 4, when the swing rod rotates, the upper end, located at the clamping groove, of the swing rod rotates in the moving space, the lower end, located at the clamping groove, of the swing rod pushes the straight ejector pin 8 to rotate, the swing rod can smoothly rotate through the moving space, and the situation that the swing rod is blocked when rotating is avoided.
The ejection structure of the invention, through setting the swinging block 4, when opening the mould, firstly the sliding block in the mould performs core pulling, the ejector plate 2 is kept still, then the ejector plate 2 is ejected relative to the bottom plate 3, the straight thimble 8 is ejected and the inclined thimble 9 is separated from the back-off along with the ejection of the ejector plate 2 of the mould, meanwhile, the swinging block 4 is ejected along with the ejector plate 2, so that the second supporting leg 42 on the swinging block 4 is separated from the second cushion block 7 on the bottom plate 3, because the swinging block 4 has the tendency of overturning to the second cushion block 7, the swinging block 4 is overturned to the second cushion block 7, one end of the swinging block 4 matched with the straight thimble is overturned, so that the straight thimble 8 is further ejected, the product is driven by the straight thimble 8 to further move to separate from the inclined thimble 9, thereby facilitating the mechanical hand to take out the piece, completing the automatic taking out, being capable of realizing the continuous production and solving the problem of scraping the product when manually taking out the piece, thereby lead to the defective rate to be difficult to the problem of control, for inefficacy risk and the unstability that adopts the spring structure to drive, pure mechanical mechanism is adopted in this application, and stability is higher to through the bottom dismouting, be convenient for maintain.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (4)
1. The utility model provides an ejection structure is assisted in mould die sinking, includes the mould body and sets up thimble board and the bottom plate in mould body one side, its characterized in that: the ejector pin plate is provided with a through groove, a swing block is arranged in the through groove, one end of the bottom of the swing block extends downwards to form a first supporting leg, the other end of the bottom of the swing block extends downwards to form a second supporting leg, a first cushion block matched with the first supporting leg is arranged in the ejector pin plate, a second cushion block matched with the second supporting leg is arranged on the bottom plate, the swing block is rotatably arranged in the through groove, the swing block has a tendency towards the second cushion block to overturn, a straight ejector pin and an inclined ejector pin are arranged in the die body, the bottom of the straight ejector pin is connected with the swing block, the straight ejector pin is located on the same side of the swing block as the first cushion block, and the bottom of the inclined ejector pin is connected with the ejector pin plate.
2. The mold opening auxiliary ejection structure according to claim 1, wherein: the straight thimble structure is characterized in that a clamping groove is formed in the side wall of the swing block, the bottom of the straight thimble extends into the clamping groove, a lower retaining block connected with the straight thimble is arranged in the clamping groove, an upper retaining block located above the swing block is further arranged on the straight thimble, and the straight thimble is connected with the swing block through the matching of the upper retaining block and the lower retaining block.
3. The mold opening auxiliary ejection structure according to claim 2, wherein: a movable space for the swinging block to rotate is formed between the upper stop block and the swinging block.
4. The mold opening auxiliary ejection structure according to claim 1, wherein: the swing block is rotatably installed on the ejector plate through a rotating shaft, and the center of gravity of the swing block is located on one side, provided with the second cushion block, of the swing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010484983.6A CN111376454B (en) | 2020-06-01 | 2020-06-01 | Supplementary ejecting structure of mould die sinking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010484983.6A CN111376454B (en) | 2020-06-01 | 2020-06-01 | Supplementary ejecting structure of mould die sinking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111376454A true CN111376454A (en) | 2020-07-07 |
| CN111376454B CN111376454B (en) | 2020-09-01 |
Family
ID=71214439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010484983.6A Active CN111376454B (en) | 2020-06-01 | 2020-06-01 | Supplementary ejecting structure of mould die sinking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111376454B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3807682A (en) * | 1972-12-29 | 1974-04-30 | L Catinella | Accelerated knock-out for molded parts |
| CN201399882Y (en) * | 2009-04-30 | 2010-02-10 | 厦门捷信达模具塑胶有限公司 | Ejection mechanism capable of completely taking out injection molding product |
| CN106003608A (en) * | 2016-05-19 | 2016-10-12 | 宁波方正汽车模具有限公司 | Mold ejection device for products with multiple ribs inside |
| CN207256790U (en) * | 2017-08-25 | 2018-04-20 | 上海奔旭精密模具有限公司 | A kind of acceleration roof construction of mould |
-
2020
- 2020-06-01 CN CN202010484983.6A patent/CN111376454B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3807682A (en) * | 1972-12-29 | 1974-04-30 | L Catinella | Accelerated knock-out for molded parts |
| CN201399882Y (en) * | 2009-04-30 | 2010-02-10 | 厦门捷信达模具塑胶有限公司 | Ejection mechanism capable of completely taking out injection molding product |
| CN106003608A (en) * | 2016-05-19 | 2016-10-12 | 宁波方正汽车模具有限公司 | Mold ejection device for products with multiple ribs inside |
| CN207256790U (en) * | 2017-08-25 | 2018-04-20 | 上海奔旭精密模具有限公司 | A kind of acceleration roof construction of mould |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111376454B (en) | 2020-09-01 |
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