CN219789129U - Injection mold for preventing cylindrical structure from demolding deformation - Google Patents

Injection mold for preventing cylindrical structure from demolding deformation Download PDF

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Publication number
CN219789129U
CN219789129U CN202321140972.1U CN202321140972U CN219789129U CN 219789129 U CN219789129 U CN 219789129U CN 202321140972 U CN202321140972 U CN 202321140972U CN 219789129 U CN219789129 U CN 219789129U
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China
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plate
limiting
mold
molding insert
lower mold
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CN202321140972.1U
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Chinese (zh)
Inventor
周玲
李学忠
王杰新
黄际银
贺洪勇
李磊
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Zhongshan Liyuan Precision Mold Industry Co ltd
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Zhongshan Liyuan Precision Mold Industry Co ltd
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Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to an injection mold capable of preventing a cylinder from being deformed, wherein a limiting plate is arranged below a lower mold plate, a molding insert is movably embedded on the lower mold plate, a first elastic piece for pushing the molding insert to move towards the direction close to the limiting plate is arranged between the molding insert and the lower mold plate, when the mold is closed, the limiting plate is attached to the lower mold plate to push the molding insert to move to the upper end of the molding insert to be level with a lower parting surface and compress the first elastic piece, and the upper end of the molding insert is provided with a second cavity which is concavely arranged inwards and communicated with a first cavity; when the die is opened, the lower die plate is far away from the limiting plate, the first elastic piece enables the molding insert to be kept against the limiting plate, even if the molding insert moves towards the direction away from the first cavity relative to the lower die plate, even if the molding insert is separated from the cylindrical structure, the demolding of the cylindrical structure is finished, the upper die plate and the upper die plate are separated, the product molded in the first cavity is ejected and demolded through the ejector pin structure, and deformation of the cylindrical structure during demolding is effectively prevented.

Description

Injection mold for preventing cylindrical structure from demolding deformation
[ field of technology ]
The utility model belongs to the technical field of injection molds, and particularly relates to an injection mold for preventing a cylindrical structure from demolding deformation.
[ background Art ]
After a product with a columnar structure is injection molded by the existing injection mold, the ejector pin is adopted to directly push and demold, and when the product is ejected and the columnar structure is driven to be separated from the mold, the columnar structure is easy to stretch and bend to deform.
[ utility model ]
The utility model aims to provide an injection mold capable of preventing a cylindrical structure from being deformed by demolding.
The utility model is realized by the following technical scheme:
the injection mold for preventing the deformation of the cylindrical structure during demolding comprises an upper mold plate, an upper parting surface arranged on the lower surface of the upper mold plate, a lower mold plate arranged opposite to the upper mold plate, a lower parting surface arranged on the upper surface of the lower mold plate, and a limiting plate arranged below the lower mold plate, wherein a molding insert is movably embedded on the lower mold plate, and a first elastic piece for pushing the molding insert to move towards the direction close to the limiting plate is arranged between the molding insert and the lower mold plate; when the mold is closed, the upper mold plate is attached to the lower mold plate so that the upper parting surface and the lower parting surface form a first cavity, the limiting plate is attached to the lower mold plate so as to push the molding insert to move to the upper end of the molding insert to be level with the lower parting surface, the first elastic piece is compressed, and the upper end of the molding insert is provided with a second cavity which is concavely arranged inwards and communicated with the first cavity; when the die is opened, the lower die plate is far away from the limiting plate, and the first elastic piece enables the molding insert to keep propping against the limiting plate even if the molding insert moves towards the direction far away from the first die cavity relative to the lower die plate.
The injection mold for preventing the cylindrical structure from being deformed is characterized in that a limiting insert is arranged at the lower end of the lower mold plate corresponding to the position of the molding insert, a limiting protrusion is arranged on the periphery side of the molding insert, a first limiting through hole for the molding insert to pass through and a limiting groove communicated with the first limiting through hole are formed in the limiting insert, and when the lower end of the limiting insert passes through the first limiting through hole, the limiting protrusion is matched with the limiting groove to limit the molding insert to move towards the direction away from the first cavity.
The injection mold for preventing the cylindrical structure from being deformed is characterized in that an elastic piece mounting groove for mounting the first elastic piece is formed in the lower end of the lower mold plate at the position corresponding to the molding insert, an elastic piece mounting step is formed in the outer periphery of the molding insert, the first elastic piece is sleeved on the molding insert, one end of the first elastic piece abuts against the elastic piece mounting groove, and the other end of the first elastic piece abuts against the elastic piece mounting step.
As described above, in the injection mold for preventing the deformation of the cylindrical structure during mold clamping, the lower mold plate is attached to the limiting plate, and the spacing a=10mm between the lower end surface of the limiting protrusion and the bottom of the limiting groove.
The injection mold for preventing the cylindrical structure from demolding deformation comprises a lower mold fixing plate arranged below the limiting plate, a second elastic piece is arranged between the lower mold plate and the lower mold fixing plate, the second elastic piece penetrates through the limiting plate, two ends of the second elastic piece respectively prop against the lower mold plate and the lower mold fixing plate, and when the mold is closed, the upper mold plate is attached to the lower mold plate and pushes the lower mold plate to move towards the direction close to the lower mold fixing plate to compress the second elastic piece; when the die is opened, the second elastic piece pushes the lower die plate to move away from the limiting plate.
The injection mold for preventing the cylindrical structure from being deformed is characterized in that eight second elastic pieces are uniformly distributed between the lower mold plate and the lower mold fixing plate.
The injection mold for preventing the deformation of the cylindrical structure during demolding is characterized in that at least one limiting structure is arranged between the lower mold plate and the limiting plate, and the limiting structure comprises a limiting column arranged at the lower end of the lower mold plate, a limiting convex ring arranged at one end of the limiting column far away from the lower mold plate, a second limiting through hole penetrating through the limiting plate in the vertical direction and used for allowing the limiting column to penetrate through, and a limiting step arranged in the second limiting through hole and used for being matched with the limiting convex ring to limit the upward movement of the limiting column.
As described above, in the injection mold for preventing the deformation of the cylindrical structure during mold clamping, the lower mold plate is attached to the limiting plate, and the spacing b=10mm between the upper end surface of the limiting convex ring and the lower end surface of the limiting step.
As described above, the injection mold for preventing the deformation of the cylindrical structure is provided with two square irons which are oppositely arranged between the limiting plate and the lower mold fixing plate.
The injection mold for preventing the cylindrical structure from being deformed is characterized in that the limiting plate is provided with at least two guide posts extending upwards, the upper mold plate is provided with an upper mold guide sleeve, the lower mold plate is provided with a lower mold guide sleeve communicated with the upper mold guide sleeve, and the upper mold plate and the lower mold plate are movably sleeved on the guide posts through the upper mold guide sleeve and the lower mold guide sleeve respectively.
Compared with the prior art, the utility model has the following advantages:
the utility model provides an injection mold for preventing a cylindrical structure from demolding deformation, wherein a limiting plate is arranged below a lower mold plate, a molding insert is movably embedded in the lower mold plate, a first elastic piece for pushing the molding insert to move towards the direction close to the limiting plate is arranged between the molding insert and the lower mold plate, when in mold closing, an upper mold plate is attached to the lower mold plate so that an upper parting surface and a lower parting surface form a first cavity, the limiting plate is attached to the lower mold plate so as to push the molding insert to move to the upper end of the molding insert to be flush with the lower parting surface, the first elastic piece is compressed, a second cavity which is concaved inwards and communicated with the first cavity is arranged at the upper end of the molding insert, and the second cavity can be cylindrical, so that a product injection molded by the first cavity has a cylindrical structure; when the die is opened, the lower die plate is far away from the limiting plate, the first elastic piece enables the molding insert to be kept against the limiting plate, even if the molding insert moves towards the direction away from the first cavity relative to the lower die plate, even if the molding insert is separated from the cylindrical structure, the demolding of the cylindrical structure is finished, the upper die plate and the upper die plate are separated, the product molded in the first cavity is ejected and demolded through the ejector pin structure, and deformation of the cylindrical structure during demolding is effectively prevented.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic view of an injection mold for preventing deformation of a cylindrical structure in accordance with an embodiment of the present utility model;
FIG. 2 is a schematic view of the cross-sectional structure of A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 a;
fig. 4 is a schematic view of the cross-sectional structure of B-B in fig. 1.
[ detailed description ] of the utility model
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
When embodiments of the present utility model refer to the ordinal terms "first," "second," etc., it is to be understood that they are merely used for distinguishing between them unless the order of their presentation is indeed dependent on the context.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The injection mold for preventing the deformation of the cylindrical structure mold stripping is shown in fig. 1-4, and comprises an upper mold plate 1, an upper parting surface 31 arranged on the lower surface of the upper mold plate 1, a lower mold plate 2 arranged opposite to the upper mold plate 1, and a lower parting surface 32 arranged on the upper surface of the lower mold plate 2, and is characterized by further comprising a limiting plate 4 arranged below the lower mold plate 2, wherein a molding insert 5 is movably embedded on the lower mold plate 2, and a first elastic piece 6 for pushing the molding insert 5 to move towards the direction close to the limiting plate 4 is arranged between the molding insert 5 and the lower mold plate 2;
when the mold is closed, the upper mold plate 1 is attached to the lower mold plate 2 so that the upper parting surface 31 and the lower parting surface 32 form a first cavity 3, the limiting plate 4 is attached to the lower mold plate 2 so as to push the molding insert 5 to move to the upper end of the molding insert 5 to be flush with the lower parting surface 32 and compress the first elastic piece 6, the upper end of the molding insert 5 is provided with a second cavity 7 which is concavely arranged inwards and communicated with the first cavity 3, the second cavity 7 can be set to be cylindrical, thus a product injection molded by the first cavity 3 is provided with a corresponding cylindrical structure, the setting can be used for changing the molding insert 5 with different second cavities according to the length of the cylinder or different structures which need to be molded on the product, and the mold insert is more general and more convenient to use;
when the mold is opened, the lower die plate 2 is far away from the limiting plate 4, and the first elastic piece 6 keeps the molding insert 5 against the limiting plate 4 even if the molding insert 5 moves relative to the lower die plate 2 in a direction far away from the first die cavity 3. The lower die plate is far away from the limiting plate, the first elastic piece enables the molding insert to be kept against the limiting plate, and even if the molding insert moves towards the direction far away from the first cavity relative to the lower die plate, the molding insert is separated from the cylindrical structure, demolding of the cylindrical structure is finished, the upper die plate and the upper die plate are separated, a product molded in the first cavity is ejected and demolded through the ejector pin structure, and deformation of the cylindrical structure during demolding is effectively prevented.
Specifically, the lower end of the lower die plate 2 is provided with a limiting insert 8 corresponding to the position of the molding insert 5, the periphery side of the molding insert 5 is provided with a limiting protrusion 51, the limiting insert 8 is provided with a first limiting through hole 81 for the molding insert 5 to pass through and a limiting groove 82 communicated with the first limiting through hole 81, and when the lower end of the limiting insert 8 passes through the first limiting through hole 81, the limiting protrusion 51 is matched with the limiting groove 82 to limit the molding insert 5 to move away from the first cavity 3. The molding insert 5 is prevented from being separated from the lower die plate 2 by the engagement of the limit projection 51 and the limit groove 82.
In addition, an elastic member mounting groove 9 for mounting the first elastic member 6 is provided at the lower end of the lower die plate 2 corresponding to the position of the molding insert 5, an elastic member mounting step 52 is provided at the outer peripheral side of the molding insert 5, the first elastic member 6 is sleeved on the molding insert 5, one end of the first elastic member abuts against the elastic member mounting groove 9, and the other end abuts against the elastic member mounting step 52. The first elastic piece 6 adopts a spring, so that when the lower die plate 2 is separated from the limiting plate 4, the forming insert 5 is pushed away from the first die cavity 3 to be separated from the injection-molded cylindrical structure by the spring.
Specifically, during mold closing, the lower mold plate 2 is attached to the limiting plate 4, and a distance a=10 mm between the lower end surface of the limiting protrusion 51 and the bottom of the limiting groove 82. I.e. the stroke of the molding insert 5 with respect to the lower die plate 2 is 10mm, which is set according to the length of the cylindrical structure to be molded.
In addition, the injection mold further comprises a lower mold fixing plate 10 arranged below the limiting plate 4, a second elastic piece 11 is arranged between the lower mold plate 2 and the lower mold fixing plate 10, the second elastic piece 11 penetrates through the limiting plate 4, two ends of the second elastic piece respectively prop against the lower mold plate 2 and the lower mold fixing plate 10, and when the mold is closed, the upper mold plate 1 is attached to the lower mold plate 2 and pushes the lower mold plate 2 to move towards the direction close to the lower mold fixing plate 10 so as to compress the second elastic piece 11; when the die is opened, the second elastic piece 11 pushes the lower die plate 2 to move away from the direction of the limiting plate 4, the lower die plate 2 is separated from the limiting plate 4 firstly when the die is opened, and meanwhile, the forming insert is kept against the limiting plate through the first elastic piece, even if the forming insert moves away from the direction of the first cavity relative to the lower die plate, the forming insert is separated from the cylindrical structure firstly, the die release of the cylindrical structure is finished firstly, the upper die plate and the upper die plate are separated, the product molded in the first cavity is ejected and released through the ejector pin structure, and the cylindrical structure is effectively prevented from deforming during the die release.
Further, the number of the second elastic members 11 is eight, and the eight second elastic members 11 are uniformly distributed between the lower die plate 2 and the lower die fixing plate 10. So that the pushing lower template 2 moves upwards more stably, and the cylindrical structure is prevented from being deformed due to the upward movement and swing of the lower template 2.
More specifically, at least one limiting structure 12 is disposed between the lower die plate 2 and the limiting plate 4, and the limiting structure 12 includes a limiting post 121 disposed at the lower end of the lower die plate 2, a limiting collar 122 disposed at one end of the limiting post 121 far away from the lower die plate 2, a second limiting through hole 123 penetrating through the limiting plate 4 along a vertical direction for the limiting post 121 to penetrate therethrough, and a limiting step 124 disposed in the second limiting through hole 123 and configured to cooperate with the limiting collar 122 to limit the upward movement of the limiting post 121. When the mold is opened, the lower die plate 2 is stopped to move upwards through the limiting structure 12, and even if the upper die plate 1 and the lower die plate 2 finish mold opening and ejection of injection products.
In addition, during mold closing, the lower mold plate 2 is attached to the limiting plate 4, and a spacing b=10mm between the upper end surface of the limiting convex ring 122 and the lower end surface of the limiting step 124 ensures that the molding insert 5 is separated from the cylindrical structure of the injection molding product, and the spacing can be set according to the length of the cylindrical structure to be molded.
Further, a square iron 13 is disposed between the limiting plate 4 and the lower die fixing plate 10.
More specifically, the limiting plate 4 is provided with at least two guide posts (not shown in the figure) extending upwards, the upper die plate 1 is provided with an upper die guide sleeve 15, the lower die plate 2 is provided with a lower die guide sleeve 16 communicated with the upper die guide sleeve 15, and the upper die plate 1 and the lower die plate 2 are movably sleeved on the guide posts through the upper die guide sleeve 15 and the lower die guide sleeve 16 respectively. So that the movement of the upper die plate 1 and the lower die plate 2 is smoother during the die assembly and the die opening.
The above description of one embodiment provided in connection with the specific content does not set forth limitation to the specific implementation of the present utility model, and is not limited to the above designations but is not limited to english designations due to the different industry designations. The method, structure, etc. similar to or identical to those of the present utility model, or some technical deductions or substitutions are made on the premise of the inventive concept, should be regarded as the protection scope of the present utility model.

Claims (10)

1. The injection mold for preventing the deformation of the cylindrical structure die stripping comprises an upper mold plate (1), an upper parting surface (31) arranged on the lower surface of the upper mold plate (1), a lower mold plate (2) arranged opposite to the upper mold plate (1) and a lower parting surface (32) arranged on the upper surface of the lower mold plate (2), and is characterized by further comprising a limiting plate (4) arranged below the lower mold plate (2), wherein a molding insert (5) is movably embedded on the lower mold plate (2), and a first elastic piece (6) for pushing the molding insert (5) to move towards the direction close to the limiting plate (4) is arranged between the molding insert (5) and the lower mold plate (2);
when the mold is closed, the upper mold plate (1) is attached to the lower mold plate (2) so that an upper parting surface (31) and a lower parting surface (32) form a first cavity (3), the limiting plate (4) is attached to the lower mold plate (2) so as to push the molding insert (5) to move to the upper end of the molding insert (5) to be flush with the lower parting surface (32), the first elastic piece (6) is compressed, and the upper end of the molding insert (5) is provided with a second cavity (7) which is concavely arranged inwards and communicated with the first cavity (3);
when the die is opened, the lower die plate (2) is far away from the limiting plate (4), and the first elastic piece (6) enables the molding insert (5) to keep abutting against the limiting plate (4), even if the molding insert (5) moves towards the direction far away from the first die cavity (3) relative to the lower die plate (2).
2. The injection mold for preventing deformation of a cylindrical structure according to claim 1, wherein a limiting insert (8) is arranged at a position of the lower end of the lower mold plate (2) corresponding to the molding insert (5), a limiting protrusion (51) is arranged on the outer periphery side of the molding insert (5), a first limiting through hole (81) for the molding insert (5) to pass through and a limiting groove (82) communicated with the first limiting through hole (81) are arranged on the limiting insert (8), and when the lower end of the limiting insert (8) passes through the first limiting through hole (81), the limiting protrusion (51) is matched with the limiting groove (82) to limit the molding insert (5) to move away from the first mold cavity (3).
3. The injection mold for preventing deformation of a cylindrical structure according to claim 2, wherein an elastic member mounting groove (9) for mounting the first elastic member (6) is formed at a position of the lower end of the lower mold plate (2) corresponding to the molding insert (5), an elastic member mounting step (52) is formed at the outer peripheral side of the molding insert (5), the first elastic member (6) is sleeved on the molding insert (5), one end of the first elastic member abuts against the elastic member mounting groove (9), and the other end abuts against the elastic member mounting step (52).
4. The injection mold for preventing the deformation of the cylindrical structure from being ejected according to claim 2, wherein the lower mold plate (2) is attached to the limiting plate (4) when the mold is closed, and the spacing a=10mm between the lower end surface of the limiting protrusion (51) and the bottom of the limiting groove (82).
5. The injection mold for preventing the deformation of the cylindrical structure from being taken out of the mold according to claim 1, further comprising a lower mold fixing plate (10) arranged below the limiting plate (4), wherein a second elastic piece (11) is arranged between the lower mold plate (2) and the lower mold fixing plate (10), the second elastic piece (11) penetrates through the limiting plate (4) and two ends of the second elastic piece respectively prop against the lower mold plate (2) and the lower mold fixing plate (10), and when the mold is closed, the upper mold plate (1) is attached to the lower mold plate (2) and pushes the lower mold plate (2) to move towards the direction close to the lower mold fixing plate (10) so as to compress the second elastic piece (11); when the die is opened, the second elastic piece (11) pushes the lower die plate (2) to move away from the limiting plate (4).
6. Injection mould for preventing deformation of a cylindrical structure according to claim 5, wherein the number of the second elastic members (11) is eight, and eight second elastic members (11) are uniformly distributed between the lower mould plate (2) and the lower mould fixing plate (10).
7. The injection mold for preventing deformation of a cylindrical structure according to claim 1, wherein at least one limiting structure (12) is arranged between the lower mold plate (2) and the limiting plate (4), the limiting structure (12) comprises a limiting post (121) arranged at the lower end of the lower mold plate (2), a limiting convex ring (122) arranged at one end, far away from the lower mold plate (2), of the limiting post (121), a second limiting through hole (123) penetrating through the limiting plate (4) in the vertical direction and used for allowing the limiting post (121) to penetrate, and a limiting step (124) arranged in the second limiting through hole (123) and used for being matched with the limiting convex ring (122) to limit the upward movement of the limiting post (121).
8. The injection mold for preventing deformation of a cylindrical structure according to claim 7, wherein the lower mold plate (2) is attached to the limiting plate (4) when the mold is closed, and a distance b=10mm between an upper end surface of the limiting collar (122) and a lower end surface of the limiting step (124).
9. Injection mould for preventing deformation of a cylindrical structure according to claim 5, characterized in that two square irons (13) are arranged between the limiting plate (4) and the lower mould fixing plate (10).
10. The injection mold for preventing the deformation of the cylindrical structure die stripping according to claim 1, wherein the limiting plate (4) is provided with at least two guide posts extending upwards, the upper mold plate (1) is provided with an upper mold guide sleeve (15), the lower mold plate (2) is provided with a lower mold guide sleeve (16) communicated with the upper mold guide sleeve (15), and the upper mold plate (1) and the lower mold plate (2) are movably sleeved on the guide posts through the upper mold guide sleeve (15) and the lower mold guide sleeve (16) respectively.
CN202321140972.1U 2023-05-11 2023-05-11 Injection mold for preventing cylindrical structure from demolding deformation Active CN219789129U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321140972.1U CN219789129U (en) 2023-05-11 2023-05-11 Injection mold for preventing cylindrical structure from demolding deformation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321140972.1U CN219789129U (en) 2023-05-11 2023-05-11 Injection mold for preventing cylindrical structure from demolding deformation

Publications (1)

Publication Number Publication Date
CN219789129U true CN219789129U (en) 2023-10-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321140972.1U Active CN219789129U (en) 2023-05-11 2023-05-11 Injection mold for preventing cylindrical structure from demolding deformation

Country Status (1)

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CN (1) CN219789129U (en)

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