CN114932660A - Product strong demoulding ejection device - Google Patents
Product strong demoulding ejection device Download PDFInfo
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- CN114932660A CN114932660A CN202210206606.5A CN202210206606A CN114932660A CN 114932660 A CN114932660 A CN 114932660A CN 202210206606 A CN202210206606 A CN 202210206606A CN 114932660 A CN114932660 A CN 114932660A
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- 230000000670 limiting effect Effects 0.000 claims abstract description 63
- 238000006073 displacement reaction Methods 0.000 claims abstract description 28
- 238000007493 shaping process Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 8
- 239000002991 molded plastic Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001816 cooling Methods 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model provides a product ejecting device that demolds by force. The method comprises the following steps: the rear mould is provided with at least one hole site used for shaping a product; the insert pin penetrates through the rear die, penetrates through the hole site and is matched with the through hole in the product; the ejector pin penetrates through the rear die and is used for ejecting a product; the rear mould is further provided with a first limiting structure, the insert pin is provided with a second limiting structure matched with the first limiting structure, and the first limiting structure and the second limiting structure jointly act to limit the displacement of the insert pin along the direction perpendicular to the bottom surface of the rear mould. The product ejecting device capable of strongly demoulding can improve the quality of a molded plastic product, reduce the production cost, ensure that the molded product is safely and completely ejected, and ensure that the molded product is not damaged by pulling.
Description
Technical Field
The utility model relates to an automobile mold technical field especially relates to a strong drawing of patterns ejecting device of product.
Background
An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. The method specifically comprises the steps of injecting heated and melted plastics into a mold cavity from an injection molding machine at high pressure, cooling and solidifying to obtain a molded product with specific size, shape and function, and taking the molded product out of an injection mold.
In general, when a molded product is taken out of a mold, the product is deformed due to the forced demolding and ejection of the inverted buckle structure in the product hole. However, whether a single ejection mechanism or a multi-component ejection mechanism is adopted, the ejection action is finished at one time. Particularly, the product hole site structure is spherical, so that normal/smooth demoulding cannot be realized, the ejector pin is not capable of ejecting the product smoothly after injection molding production, the product is deformed, the product hole site is locally higher than the bottom plane of the product after forced demoulding, a lot of defective products are caused, and a large amount of defective products are missed to find and leave at a client side, so that a customer production line is blocked to complain or claim claims.
Disclosure of Invention
In view of this, the present disclosure provides a product strong demolding ejection device, which can improve the quality of a molded product, reduce the production cost, enable the molded product to be ejected safely and completely, and ensure that the molded product is not damaged by pulling.
Based on above-mentioned purpose, this disclosure provides a product ejection device that demolds by force, includes:
the rear die is provided with at least one hole site, and the hole site is used for shaping a product;
the insert pin penetrates through the rear die, penetrates through the hole site and is matched with the through hole in the product;
the ejector pin penetrates through the rear die and is used for ejecting a product;
the rear die is further provided with a first limiting structure, the insert pin is provided with a second limiting structure matched with the first limiting structure, and the first limiting structure and the second limiting structure act together to limit the displacement of the insert pin along the direction perpendicular to the bottom surface of the rear die.
In the above device, preferably, the insert pins include a middle insert pin penetrating through the middle of the hole and a side insert pin penetrating through the edge of the hole;
when the ejector pin ejects out for a first distance, the product is separated from the rear mold; when the thimble ejects out for a second distance, limiting the displacement of the side edge insert pin to separate the side edge insert pin from the product; and when the ejector pin ejects out for a third distance, limiting the displacement of the middle insert pin to separate the middle insert pin from the product.
In the above forced demoulding and ejecting device for products, preferably, the insert pins are arranged in three rows in parallel.
In the above product forced demoulding and ejecting device, preferably, the first limiting structure comprises a first limiting step and a second limiting step; the first limiting step limits the displacement of the side insert pin, and the second limiting step limits the displacement of the middle insert pin.
In the above product forced demoulding ejection apparatus, preferably, the first limiting step and the second limiting step are disposed on the rear mould, and in a direction perpendicular to the bottom surface of the rear mould, a displacement distance of the side insert pin limited by the first limiting step is smaller than a displacement distance of the middle insert pin limited by the second limiting step.
In the above device for ejecting a product from a mold by force release, preferably, the second limit structure includes a first limit stop and a second limit stop; the first limit stop limits the displacement of the side insert pin, and the second limit stop limits the displacement of the middle insert pin.
In the above product forced demoulding and ejecting device, preferably, the first limit stopper and the second limit stopper are respectively disposed on the side insert pin and the middle insert pin, and the first limit stopper limits that the displacement distance of the side insert pin is smaller than that of the middle insert pin which is limited by the second limit stopper.
In the above-mentioned product forced demoulding and ejecting device, preferably, at least 12 ejector pins penetrate through the rear mould.
In the above device for ejecting the product from the mold after the forced demolding, preferably, a clamping structure is arranged at one end of the insert pin, which is far away from the bottom surface of the rear mold, and the clamping structure protrudes out of the top surface of the rear mold.
In the above-described product forced demoulding and ejecting device, preferably, the clamping structure is spherical or elliptical.
From the above, the product forced demoulding ejection device provided by the disclosure can improve the quality of a formed plastic product, reduce the production cost, enable the plastic product to be ejected safely and completely, and ensure that the plastic product is not damaged by pulling.
Drawings
In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a product forced demolding ejection device according to an embodiment of the disclosure;
fig. 2 is a partial schematic view of a product positive ejection device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of the product forced demolding ejection device according to the embodiment of the disclosure during the first ejection;
fig. 4 is a partial schematic view of the product forced demolding ejection device according to the embodiment of the disclosure during the first ejection;
fig. 5 is a schematic diagram illustrating arrangement of needle-inserting thimbles during first ejection in the ejection process of the product strong demoulding ejection device according to the embodiment of the disclosure;
fig. 6 is a schematic structural diagram of the product forced demolding ejection device according to the embodiment of the disclosure during the second ejection;
fig. 7 is a partial schematic view of the product forced demolding ejection device according to the embodiment of the disclosure during the second ejection;
fig. 8 is a schematic diagram illustrating arrangement of needle-inserted thimbles during secondary ejection in the ejection process of the forced demoulding and ejection device of the product according to the embodiment of the disclosure;
fig. 9 is a schematic structural view of the product forced demolding ejection device according to the embodiment of the disclosure during ejection for the third time;
fig. 10 is a partial schematic view of the product forced demolding ejection device according to the embodiment of the disclosure during the third ejection;
fig. 11 is a schematic diagram illustrating arrangement of needle-inserted thimbles during third ejection in the ejection process of the forced demoulding and ejection device of the embodiment of the disclosure;
fig. 12 is a schematic view of a first limit structure inside a rear film in a product forced demoulding ejection device according to an embodiment of the disclosure;
fig. 13 is a schematic view of a first limit structure outside a rear film in a product forced demoulding ejection device according to an embodiment of the disclosure;
fig. 14 is a schematic view of a second limiting structure inside a rear film in the product forced demolding ejection device according to the embodiment of the disclosure;
fig. 15 is a schematic view of a second limiting structure outside a rear film in the product forced demolding and ejecting device according to the embodiment of the disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure will be described in further detail below with reference to the accompanying drawings in conjunction with the detailed description.
It should be noted that technical terms or scientific terms used in the embodiments of the present disclosure should have the ordinary meanings as understood by those having ordinary skill in the art to which the present disclosure belongs, unless otherwise defined. The use of "first," "second," and similar terms in the embodiments of the disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The problem that the product cannot be demolded normally/smoothly due to the fact that the spherical structure of the hole site of the product is not smooth, the ejector pin cannot eject the product smoothly after injection molding production, and the product can deform is solved. The present disclosure provides an embodiment of a product forced demolding ejection device, referring to fig. 1, including:
the rear die 101 is arranged on the injection die and forms the injection die together with the front die; at least one hole site is arranged on the rear die 101 and used for shaping a product; a molded product space is formed between the front mold and the rear mold, and after the injection mold is separated, the molded product is left on a hole site of the rear mold, and then the product is smoothly demoulded through the combined action of the insert pin 102 and the thimble 103. The insert pin 102 penetrates through the rear mold, penetrates through a hole position on the rear mold and is matched with a through hole on a product; the insert pins 102 are arranged in three rows in parallel and comprise middle insert pins penetrating through the middle of the hole site and side insert pins penetrating through the edge of the hole site; one end of the insert pin 102 far away from the bottom surface of the rear mold is provided with a clamping structure 106, and the clamping structure 106 protrudes out of the top surface of the rear mold and is matched with a through hole on a product; the clamping structure 106 fixedly connects the product with the insert pin 102; the engaging structure 106 may be spherical or elliptical, or may be other shapes capable of matching with the through hole of the product, but is not limited thereto. The ejector pin 103 penetrates through the rear mold, is attached to the bottom surface of the product and is used for smoothly ejecting the product from the rear mold. When the product is ejected from the rear mold, the ejection action is finished at one time, the ejection of the product is not smooth, and the product is easy to deform because the insert pin 102 is forcibly detached from the product at one time; therefore, the rear die 101 is further provided with a first limiting structure, the insert pin 102 is provided with a second limiting structure matched with the first limiting structure, and the first limiting structure and the second limiting structure can limit the displacement of the insert pin 102 along the direction perpendicular to the bottom surface of the rear die, so that the insert pin 102 is separated from a product in batches, the product is prevented from being deformed due to interference of the product and the insert pin 102, the production quality of the product is improved, and the production cost is reduced.
In this embodiment, the bottom surface of the rear mold is a surface far away from the product, and the contact surface between the rear mold and the product is the top surface of the rear mold; the bottom surface of the product refers to the surface of the product, which is contacted with the hole sites on the rear die.
In a specific embodiment, referring to fig. 12, the first limiting structure is disposed inside the rear film and includes a first limiting step 104 and a second limiting step 105, the first limiting step 104 limits the displacement of the side insert pin, and the second limiting step 105 limits the displacement of the middle insert pin; the distance from the first limit step 104 to the bottom surface of the rear film is smaller than the distance from the second limit step 105 to the bottom surface of the rear film; the second limiting structure is arranged on the insert pin in the rear film and is far away from one end of the clamping structure 106, and the distance between the second limiting structure and the clamping structure 106 is equal; when the thimble 103 is ejected normally by a first distance of 5mm, referring to fig. 3, 4 and 5, the insert pin 102 is ejected by the first distance of 5mm together with the thimble 103, and the product is smoothly separated from the rear mold 101; when the ejector pin 103 is ejected by a second distance of 10mm, referring to fig. 6, 7 and 8 together, the middle insert pin is ejected by the second distance of 10mm together with the ejector pin 103, and the side insert pin cannot be displaced in the direction perpendicular to the bottom surface of the rear mold under the restriction of the first limit step 104, so that the side insert pin is separated from the product; when the thimble 103 is ejected by a third distance of 15mm, referring to fig. 9, 10 and 11 together, the middle insert pin cannot be displaced along the direction vertical to the bottom surface of the rear mold under the limiting action of the second limiting step 105, so that the middle insert pin is separated from the product; at this time, the product is completely separated from the insert pin, and the product is smoothly demoulded.
The first limiting structure can be arranged inside the rear film or on the outer surface of the rear film, so that in an alternative embodiment, referring to fig. 13, the first limiting structure protrudes from the bottom surface of the rear film, and the distance from the first limiting step 104 in the first limiting structure to the bottom surface of the rear film is greater than the distance from the second limiting step 105 to the bottom surface of the rear film; the second limiting structure is arranged at one end of the insert pin 102 far away from the clamping structure 106, and the distance from the second limiting structure to the clamping structure 106 is equal; referring to the above embodiment, the operation distance and the operation principle of the insert pin 102 in the direction perpendicular to the bottom surface of the rear film are the same as those of the above embodiment.
In a further embodiment, referring to fig. 14, the first limiting structure is arranged inside the rear membrane at an equal distance from the bottom surface of the rear membrane; the second limit structure is arranged on the insert pin in the rear film and comprises a first limit stop 107 and a second limit stop 108, the first limit stop 107 limits the displacement of the insert pin on the side edge, the second limit stop 108 limits the displacement of the insert pin in the middle, and the distance from the first limit stop 107 to the bottom surface of the rear film is greater than the distance from the second limit stop 108 to the bottom surface of the rear film. When the ejector pin 103 is ejected normally for a first distance of 5mm, referring to fig. 3, 4 and 5 together, the insert pin 102 is ejected for the first distance of 5mm along with the ejector pin 103, and the product is smoothly separated from the rear mold 101; when the thimble 103 is ejected by a second distance of 10mm, referring to fig. 6, 7 and 8 together, the middle insert pin is ejected by the second distance of 10mm together with the thimble 103, and the side insert pin cannot be displaced in a direction perpendicular to the bottom surface of the rear mold under the restriction of the first limit stop 107, so that the side insert pin is separated from the product; when the thimble 103 is ejected by a third distance of 15mm, referring to fig. 9, 10 and 11 together, the middle insert pin cannot be displaced along the direction perpendicular to the bottom surface of the rear mold under the restriction of the second limit stop 108, so that the middle insert pin is separated from the product; at this time, the product is completely separated from the insert pin, and the product is smoothly demoulded.
The insert pins can be arranged to protrude from the bottom surface of the rear film, and the second limit structures can also be arranged on the insert pins protruding from the bottom surface of the rear film, so that in an alternative embodiment, referring to fig. 15, the first limit structures are arranged inside the rear film, and the distances from the first limit structures to the bottom surface of the rear film are equal; the second limiting structure is arranged at one end of the insert pin 102, which protrudes out of the bottom surface of the rear film and is far away from the card and structure 106; the distance from the first limit stop 107 to the bottom surface of the rear film in the second limit structure is smaller than the distance from the second limit stop 108 to the bottom surface of the rear film; referring to the above-described embodiment, the operation distance and the operation principle of the insert pin 102 in the direction perpendicular to the bottom surface of the rear film are the same as those of the above-described embodiment.
But first limit structure and second limit structure exclusive action also can cooperate jointly for inlay the needle in turn and break away from with the product can, so in a further embodiment, first limit structure sets up on the membrane of back, inlay be equipped with on the needle with first limit structure assorted second limit structure, first limit structure and second limit structure cooperation combined action each other, the restriction is inlayed the needle along with the displacement on the membrane bottom surface vertical direction of back, makes to inlay the needle in turn and break away from with the product.
The above-mentioned embodiment all adopts the ejecting mode of secondary for the product is smoothly demolded, has improved the quality of shaping product, has saved the artifical screening process of follow-up, avoids causing follow-up production delay because product size or deformation problem.
In a further embodiment, at least 12 ejector pins penetrate through the rear die; the ejector pins uniformly penetrate through the rear die and are attached to the bottom surface of a product, so that the phenomenon that the product is deformed when the ejector pins eject the product due to uneven stress of the product caused by uneven distribution of the ejector pins is avoided.
In the above embodiment of the present disclosure, a product strong demoulding ejection device is used, so that the quality of a molded product is improved, the production cost is reduced, the molded product is ejected safely and completely, and the molded product is prevented from being damaged by pulling. The embodiment adopts a limit structure; the insert pins are separated from the products in batches by limiting the displacement of the insert pins along the vertical direction of the bottom surface of the rear mold, the subsequent manual screening process is saved, the subsequent claim of assembly problems of a production line of a client due to the size or deformation problem is avoided, the production quality is improved, and the production cost is reduced.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is merely exemplary, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the present disclosure, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of brevity.
The disclosed embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalents, improvements, and the like that may be made within the spirit and principles of the embodiments of the disclosure are intended to be included within the scope of the disclosure.
Claims (10)
1. A product forced demoulding ejection device comprises:
the rear mould is provided with at least one hole site used for shaping a product;
the insert pin penetrates through the rear die, penetrates through the hole site and is matched with the through hole in the product;
the ejector pin penetrates through the rear die and is used for ejecting a product;
the rear die is characterized in that a first limiting structure is further arranged on the rear die, a second limiting structure matched with the first limiting structure is arranged on the insert pin, and the first limiting structure and the second limiting structure act together to limit the displacement of the insert pin along the direction perpendicular to the bottom surface of the rear die.
2. The ejector apparatus for strong demoulding of products according to claim 1, wherein the insert pins comprise a middle insert pin passing through the middle of the hole site and a side insert pin passing through the edge of the hole site;
when the ejector pin ejects out for a first distance, the product is separated from the rear mold; when the thimble ejects out for a second distance, limiting the displacement of the side edge insert pin to separate the side edge insert pin from the product; and when the ejector pin ejects out for a third distance, limiting the displacement of the middle insert pin to separate the middle insert pin from the product.
3. The ejector device for strong demoulding of products according to claim 1, wherein the insert pins are arranged in three rows in parallel.
4. The forced demolding ejection device for products as claimed in claim 2, wherein:
the first limiting structure comprises a first limiting step and a second limiting step; the first limiting step limits the displacement of the side insert pin, and the second limiting step limits the displacement of the middle insert pin.
5. The forced demolding ejection device for products as claimed in claim 4, wherein:
the first limiting step and the second limiting step are arranged on the rear die, and in the direction perpendicular to the bottom surface of the rear die, the displacement distance of the side insert pin limited by the first limiting step is smaller than the displacement distance of the middle insert pin limited by the second limiting step.
6. The forced demolding ejection device for products as claimed in claim 2, wherein:
the second limit structure comprises a first limit stop and a second limit stop; the first limit stop limits the displacement of the side insert pin, and the second limit stop limits the displacement of the middle insert pin.
7. The forced demoulding and ejecting device for the product according to claim 6, wherein:
the first limit stop and the second limit stop are respectively arranged on the side insert pin and the middle insert pin, and the first limit stop limits that the displacement distance of the side insert pin is smaller than that of the middle insert pin which is limited by the second limit stop.
8. The ejector device for strong demoulding of products according to claim 1, wherein at least 12 ejector pins penetrate through the rear mould.
9. The ejector device for forced demoulding of the product according to claim 1, wherein one end of the insert pin, which is far away from the bottom surface of the rear mould, is provided with a clamping structure, and the clamping structure protrudes out of the top surface of the rear mould.
10. The ejector apparatus for strong demoulding of products according to claim 9, wherein the engaging structure is spherical or elliptical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210206606.5A CN114932660A (en) | 2022-03-02 | 2022-03-02 | Product strong demoulding ejection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210206606.5A CN114932660A (en) | 2022-03-02 | 2022-03-02 | Product strong demoulding ejection device |
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| CN114932660A true CN114932660A (en) | 2022-08-23 |
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| CN202210206606.5A Pending CN114932660A (en) | 2022-03-02 | 2022-03-02 | Product strong demoulding ejection device |
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