CN108527786B - Injection mold and time delay core pulling mechanism thereof - Google Patents
Injection mold and time delay core pulling mechanism thereof Download PDFInfo
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- CN108527786B CN108527786B CN201810575713.9A CN201810575713A CN108527786B CN 108527786 B CN108527786 B CN 108527786B CN 201810575713 A CN201810575713 A CN 201810575713A CN 108527786 B CN108527786 B CN 108527786B
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- sliding block
- core
- inclined guide
- pulling
- die assembly
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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
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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
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C2045/338—Mould parts with combined axial and transversal movements
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a time delay core-pulling mechanism of an injection mold, which comprises a plurality of core-pulling assemblies for driving a movable mold to pull cores according to a preset core-pulling sequence, and is characterized in that any one of the core-pulling assemblies comprises an inclined guide pillar and a sliding block, wherein the sliding block is arranged on the movable mold assembly and sleeved outside the inclined guide pillar, and is used for being connected with the movable mold of a product to be separated; the inclined guide pillar is used for being connected with the fixed die assembly, and when the movable die assembly and the fixed die assembly are mutually far away, the sliding block slides along the inclined guide pillar so as to drive the movable die of the product to be separated from the product according to the preset core pulling sequence. The time delay core-pulling mechanism greatly reduces the manufacturing cost of the die and reduces the space occupied by the time delay core-pulling mechanism. The invention also relates to an injection mold adopting the delay core-pulling mechanism.
Description
Technical Field
The invention relates to the technical field of injection molding, in particular to an injection mold and a time delay core pulling mechanism thereof.
Background
As shown in fig. 1, fig. 1 schematically shows the demolding direction of the product. According to the requirement of the plastic part, the local characteristic of the molded plastic part is required to be molded in the demolding direction X of the sliding block 2, the characteristic is required to be demolded along the Y direction perpendicular to the X direction, and the demolding is required to be completed before the sliding block 2 is loosed, so that the fact that the demolding of the local characteristic of the plastic part is required to be completed in the Y direction before the sliding block 2 is loosed in the X direction is obtained.
The time delay core pulling mechanism is characterized in that a time delay core pulling mechanism is arranged, a cylinder is generally adopted for controlling the sequence of core pulling, and the time delay core pulling of a sliding block can be realized by setting the sequence of core pulling and the time interval of time delay core pulling according to production requirements. However, the oil cylinder has the defects of large occupied space and high cost, and some dies cannot use the oil cylinder core pulling mechanism due to limited structural positions.
Therefore, the delay core pulling mechanism with small occupied space and low maintenance cost is a technical problem which needs to be solved by the technicians in the field at present.
Disclosure of Invention
The invention aims to provide a time-delay core pulling mechanism of an injection mold, so as to achieve the purposes of small occupied space and low maintenance cost.
The invention also aims at providing an injection mold adopting the delay core pulling mechanism.
In order to achieve the above purpose, the time delay core-pulling mechanism of the injection mold is used in the injection mold with a fixed mold component and a movable mold component, the time delay core-pulling mechanism comprises a plurality of core-pulling components for driving the movable mold to pull the core according to a preset core-pulling sequence, any one of the core-pulling components comprises an inclined guide pillar and a sliding block, wherein,
the sliding block is arranged on the movable die assembly and sleeved outside the inclined guide post, and is used for being connected with a movable die of a product to be separated;
the inclined guide pillar is used for being connected with the fixed die assembly, and when the movable die assembly and the fixed die assembly are mutually far away, the sliding block slides along the inclined guide pillar so as to drive the movable die of the product to be separated from the product according to the preset core pulling sequence.
Preferably, the core pulling mechanism comprises a first core pulling component which pulls core along a first direction and a second core pulling component which pulls core along a second direction, the first direction and the second direction are mutually perpendicular, and the first core pulling component pulls core before the second core pulling component.
Preferably, the first core-pulling assembly includes:
the first inclined guide post is connected with the fixed die assembly;
one end of the first sliding block is sleeved on the first inclined guide post, and the other end of the first sliding block is provided with a driving inclined plane;
the movable die comprises a fixed die assembly, a first sliding block, a first inclined guide post and a second sliding block, wherein the fixed die assembly is arranged on the fixed die assembly, the first sliding block is arranged on the first movable die to be separated from a product, a driven inclined surface matched with the driving inclined surface is arranged on the first movable die, when the movable die assembly is far away from the fixed die assembly, the first sliding block slides along the first inclined guide post, and the driving inclined surface extrudes the driven inclined surface and enables the first movable die to move along the first direction.
Preferably, the second core-pulling assembly includes:
the second inclined guide post is connected with the fixed die;
the second sliding block is provided with a waist-shaped guide hole, and is sleeved on the second inclined guide post through the waist-shaped guide hole;
the second movable mould is connected with the second sliding block;
the first sliding block and the first movable die are arranged on the second sliding block, and when the first sliding block is not separated from the first inclined guide post in the process that the movable die assembly is far away from the fixed die assembly, the side wall of the waist-shaped guide hole is not contacted with the second inclined guide post; when the first sliding block is separated from the first inclined guide pillar, the side wall of the waist-shaped guide hole is contacted with the second inclined guide pillar, and the second sliding block slides along the second inclined guide pillar and drives the second movable die to move along the second direction.
Preferably, the fixed die further comprises a locking block connected to the fixed die assembly, a first locking inclined plane is formed in the locking block, and a second locking inclined plane matched with the first locking inclined plane is further formed in one end of the first inclined guide post in a sleeved mode by the first sliding block.
Preferably, the first slider is further provided with a first positioning groove, the second slider is further provided with a first limiting column matched with the first positioning groove, and when the first slider is separated from the first inclined guide column, the first limiting column is embedded into the first positioning groove.
Preferably, the fixed die assembly is further provided with a second positioning groove, the second sliding block is further provided with a flexible limiting column, and the flexible limiting column is embedded in the second positioning groove when the first sliding block is not separated from the first inclined guide column in the process that the movable die assembly is far away from the fixed die assembly; when the first sliding block is separated from the first inclined guide pillar, the flexible limiting pillar is separated from the second positioning groove.
Preferably, the second slider is provided with a spacing post mounting hole, the spacing post of flexibility includes:
the limiting screw is embedded in the limiting column mounting hole;
the limiting block is fixed at the top of the limiting screw and is matched with the second positioning groove;
a bump fixed on the shaft of the limit screw;
and the spring is sleeved on the rod part of the limit screw, one end of the spring abuts against the bump, and the other end of the spring abuts against the bottom of the limit column mounting hole.
Preferably, the movable mold assembly is further provided with a second positioning groove, the fixed mold assembly is further provided with a flexible limiting column, and the flexible limiting column is embedded in the second positioning groove when the first sliding block is not separated from the first inclined guide column in the process that the movable mold assembly is away from the fixed mold assembly; when the first sliding block is separated from the first inclined guide pillar, the flexible limiting pillar is separated from the second positioning groove.
The injection mold disclosed by the invention comprises a fixed mold assembly, a movable mold assembly and a delay core-pulling mechanism, wherein the delay core-pulling mechanism is any one of the delay core-pulling mechanisms disclosed by the invention.
According to the technical scheme, the delay core-pulling mechanism disclosed by the invention comprises a plurality of core-pulling assemblies for driving the movable mold to perform core pulling according to a preset core-pulling sequence, the core-pulling assemblies act one by one in the process that the movable mold assembly is far away from the fixed mold assembly so as to complete the preset core-pulling sequence, any one of the core-pulling assemblies comprises an inclined guide pillar and a sliding block, the sliding block is arranged on the movable mold assembly and sleeved outside the inclined guide pillar, and the sliding block is used for being connected with the movable mold of a product to be separated; the inclined guide post is connected with the fixed die assembly, and when the movable die assembly and the fixed die assembly are mutually far away, the sliding block slides along the inclined guide post to drive the movable die of the product to be separated from the product according to a preset core pulling sequence.
Compared with the prior art, each core-pulling component in the scheme realizes core pulling through the matching of an inclined guide post and a sliding block, and realizes the action of delayed core pulling through the sequential mechanical movement of different sliding blocks, so that the structure of the current oil cylinder core pulling is replaced, the manufacturing cost of a die is greatly reduced, and the space occupied by the delayed core-pulling mechanism is reduced; in addition, because the matching mode of the inclined guide post and the sliding block is simple in structure and does not need special maintenance, the maintenance cost of the delay core pulling mechanism is reduced, and the market competitiveness of the injection mold and products produced by the injection mold is greatly improved.
Drawings
FIG. 1 is a schematic drawing of the demolding direction of a product;
FIG. 2 is a schematic view of an injection mold according to an embodiment of the present invention;
FIG. 3 is a schematic side view of a first core back assembly in a clamped state;
FIG. 4 is a schematic top view of FIG. 3;
FIG. 5 is a schematic side view of a first core-pulling assembly after core pulling is completed;
FIG. 6 is a schematic top view of FIG. 5;
FIG. 7 is a schematic side view of a second core back assembly in a clamped state;
FIG. 8 is a schematic top view of FIG. 7;
FIG. 9 is a schematic side view of a second core-pulling assembly after core pulling is completed;
FIG. 10 is a schematic top view of FIG. 9;
FIG. 11 is a schematic view of a longitudinal section of an injection mold disclosed in an embodiment of the present invention;
fig. 12 is a schematic structural view of a flexible limiting post disclosed in an embodiment of the present invention.
Wherein, 1 is the flexible spacing post, 2 is the second slider, 3 is the second slope guide pillar, 4 is the slider mop, 5 is fastening screw, 6 is the latch segment, 7 is first spacing post, 8 is first slope guide pillar, 9 is first slider, 10 is the second spacing post, 11 is first constant head tank, 12 is first movable mould, 13 is the product, 14 is the second movable mould, 15 is the spacing piece, 16 is the lug, 17 is the limit screw, 18 is the spring, A is the cover half subassembly, B is the movable mould subassembly.
Detailed Description
One of the cores of the invention is to provide a time-delay core pulling mechanism of an injection mold so as to achieve the purposes of small occupied space and low maintenance cost.
The invention also provides an injection mold adopting the delay core pulling mechanism.
The following describes the embodiments of the present invention with reference to the drawings.
In view of the fact that a plastic part product can involve delayed core pulling in an injection molding process, the invention discloses a delayed core pulling mechanism of an injection mold.
The delay core-pulling mechanism disclosed by the invention comprises a plurality of core-pulling assemblies for driving a movable die to pull cores according to a preset core-pulling sequence, wherein each core-pulling assembly comprises an inclined guide pillar and a sliding block, the sliding blocks are arranged on the movable die assembly B and sleeved outside the inclined guide pillar, and the sliding blocks are simultaneously connected with the movable die of a product 13 to be dropped; the inclined guide pillar is used for being connected with the fixed die component A, and in the process that the movable die component B is far away from the fixed die component A, the sliding block moves along with the movable die component on one hand, and also slides along the inclined guide pillar on the other hand, under the action of the inclined guide pillar, the sliding block gradually moves towards a preset core pulling direction and according to a preset core pulling sequence, so that the movable die connected with the sliding block is driven to be separated from a product 13.
It should be noted that, because the time delay core pulling is involved, the action time of different core pulling assemblies is firstly existed and then the moving dies driven by each core pulling assembly are different, and a plurality of different moving dies are all arranged on the moving die assembly B.
Compared with the prior art, each core-pulling component in the scheme realizes core pulling through the matching of an inclined guide post and a sliding block, and realizes the action of delayed core pulling through the sequential mechanical movement of different sliding blocks, so that the structure of the current oil cylinder core pulling is replaced, the manufacturing cost of a die is greatly reduced, and the space occupied by the time-delay core-pulling mechanism is reduced; in addition, because the matching mode of the inclined guide post and the sliding block is simple in structure and does not need special maintenance, the maintenance cost of the delay core pulling mechanism is reduced, and the market competitiveness of the injection mold and products produced by the injection mold is greatly improved.
It will be appreciated by those skilled in the art that, according to the difference of the products 13, there may be different numbers of core-pulling assemblies in one set of injection mold, and there may be two, three or even more core-pulling directions of the core-pulling assemblies, which may be perpendicular to each other, parallel to each other or intersect each other, and no matter how many core-pulling assemblies are, it is only necessary to ensure that the core-pulling assemblies core one by one according to a preset core-pulling sequence and a preset core-pulling direction in a process that the movable mold assembly B is far away from the fixed mold assembly a.
In this embodiment, the core-pulling mechanism specifically includes a first core-pulling component and a second core-pulling component, where the first core-pulling component performs core-pulling along a first core-pulling direction, the second core-pulling component performs core-pulling along a second core-pulling direction, and the first core-pulling direction and the second core-pulling direction are mutually perpendicular.
For convenience of understanding, in the embodiment of the present invention, the first direction is defined as the Y direction, the second direction is defined as the X direction, the first core pulling assembly disclosed in the embodiment of the present invention includes the first inclined guide post 8, the first slide block 9, and the first movable mold 12, please refer to fig. 3 to fig. 6, the first inclined guide post 8 is connected to the fixed mold assembly a (not shown in the drawings), one end of the first slide block 9 is sleeved on the first inclined guide post 8, the other end is provided with a driving inclined surface, as shown in fig. 4 and fig. 6, the first movable mold 12 is provided with a driven inclined surface adapted to the driving inclined surface, during the process of moving mold assembly B away from the fixed mold assembly a, the first slide block 9 slides along the first inclined guide post 8, and at this time, the first slide block 9 moves along the X direction, and the driving inclined surface presses the driven inclined surface, so that the first movable mold 12 moves along the Y direction, thereby, two stages of core pulling of the first movable mold 12 are realized through transmission between the first inclined guide post and the first slide block 9 and the first movable mold 12.
With continued reference to fig. 3 to 6, in order to further optimize the technical solution in the foregoing embodiment, a locking block 6 is further provided in this embodiment, where the locking block 6 may be mounted on the fixed mold assembly a by using a fastening screw 5, a first locking inclined plane is provided on the locking block 6, a first slider 9 is sleeved on one end of the first inclined guide pillar 8, and a second locking inclined plane matched with the first locking surface is further provided on one end of the first inclined guide pillar, where the first locking inclined plane is attached to the second locking inclined plane when the injection mold is in a mold-closing state, as shown in fig. 3.
The second core pulling assembly disclosed in the embodiment of the invention comprises a second inclined guide post 3, a second sliding block 2 and a second movable mold 14, as shown in fig. 7 to 10, the second inclined guide post 3 is also fixedly connected to the fixed mold assembly a, a waist-shaped guide hole is formed in the second sliding block 2, the second sliding block 2 is sleeved on the second inclined guide post 3 through the waist-shaped guide hole, the second movable mold 14 is connected with the second sliding block 2, the first sliding block 9 and the first movable mold 12 are both arranged on the second sliding block 2 (move along with the second sliding block 2), and in the process that the movable mold assembly B is far away from the fixed mold assembly a, when the first sliding block 9 and the first inclined guide post 8 are not separated, the side wall of the waist-shaped guide hole is not contacted with the second inclined guide post 3 (has a gap), and when the first sliding block 9 and the first inclined guide post 8 are separated, the side wall of the waist-shaped guide hole is contacted with the second inclined guide post 3, and at this time, the second sliding block 2 slides along the second inclined guide post 3 and drives the second movable mold 14 to move along the X direction. It can be seen that the waist-shaped guide hole is formed larger, and in the core pulling process of the first core pulling component, the waist-shaped guide hole leaves an avoidance space for the second inclined guide pillar 3, and at the moment, the second inclined guide pillar 3 cannot be in contact with the second sliding block 2, so that in the core pulling process of the first core pulling component, the second core pulling component cannot act, and the purpose of delayed core pulling is achieved.
More specifically, the second inclined guide posts 3 include two second inclined guide posts 3, the two second inclined guide posts 3 are respectively arranged at two sides of the second sliding block 2, the second sliding block 2 is provided with a sliding block mop 4, and the waist-shaped guide Kong Juti is arranged on the sliding block mop 4.
Referring to fig. 4 and 6, a first positioning groove 11 is further provided on the first slider 9, a first limiting post 7 for matching with the first positioning groove 11 is further provided on the second slider 2, and when the first slider 9 is separated from the first inclined guide post 8 (the position shown in fig. 5), the first limiting post 7 is embedded into the first positioning groove 11, so that the first slider 9 is in a stable state.
In order to further ensure that the second core-pulling component does not generate core-pulling action when the first core-pulling component is used for pulling core, in the embodiment, a second positioning groove is further formed in the fixed die component A, a flexible limit post 1 is arranged on the second sliding block 2, as shown in fig. 2 and 7-10, in the process that the movable die component B is far away from the fixed die component A, when the first sliding block 9 and the first inclined guide post 8 are not separated, the flexible limit post 1 is embedded in the second positioning groove, so that the second sliding block 2 only can move along the direction that the movable die component B is far away from the fixed die component A, and the second sliding block 2 and the fixed die component A do not generate relative movement in other directions; when the first slider 9 is separated from the first inclined guide post 8, the flexible limiting post 1 is separated from the second positioning groove, at this time, the second slider 2 can move along the X direction under the action of the second inclined guide post 3, and a second limiting post 10 can be further arranged in the X direction so as to limit the second slider 2, as shown in fig. 10.
Referring to fig. 12, a second slider 2 is provided with a mounting hole of a limiting post, the flexible limiting post 1 specifically includes a limiting screw 17, a limiting block 15, a bump 16 and a spring 18, where the limiting screw 17 is embedded in the mounting hole of the limiting post, the limiting block 15 is fixed at the top of the limiting screw 17 and is adapted to a second positioning slot (which can be embedded in the second positioning slot), the bump 16 is fixedly arranged at the rod of the limiting screw 17, the spring 18 is sleeved at the rod of the limiting screw 17, one end of the spring is abutted against the bump 16, and the other end of the spring abuts against the mounting hole of the limiting post, so as to provide elastic force for the limiting screw 17, and ensure that the limiting block 15 is always located in the second positioning slot when the first core pulling component does not complete core pulling.
In addition, the person skilled in the art can set the flexible limiting post 1 on the fixed die assembly a, and the second positioning groove on the movable die assembly B, which achieves the same effect as the above embodiment in which the flexible limiting post 1 is added.
Of course, when the technical solution is also conceivable, the flexible limiting column 1 may be replaced by a rigid column, which is always located in the second positioning groove when the core pulling of the first core pulling assembly is not completed, and is separated from the second positioning groove when the core pulling of the first core pulling assembly is completed, which can also achieve the above technical effects.
In addition, the embodiment of the invention also discloses an injection mold, which comprises a fixed mold assembly A, a movable mold assembly B and a time delay core pulling mechanism, wherein the time delay core pulling mechanism is the time delay core pulling mechanism disclosed in any embodiment.
Taking the core pulling mechanism as an example, the core pulling mechanism only comprises a first core pulling component and a second core pulling component, and the mold opening process of the injection mold is as follows:
under the drive of an injection molding machine, the movable mold assembly B is far away from the fixed mold assembly A, a first inclined guide post 8 fixed on the fixed mold assembly A toggles a first sliding block 9, so that the first sliding block 9 moves along the X direction, the first sliding block 9 drives a first movable mold 12 to move towards the Y direction through a driving inclined plane, the first sliding block 9 continuously slides along the first inclined guide post 8, when a first positioning groove 11 is positioned right below a first limiting post 7, the flexible limiting post 1 just falls off the fixed mold assembly A, and at the moment, the first core pulling assembly completes the core pulling action; during the period, because of the limiting action of the flexible limiting column 1 and the abdication action of the waist-shaped guide hole, the second sliding block 2 does not perform core pulling action all the time, after the core pulling action of the first core pulling component is completed, the flexible limiting column 1 is completely separated from the fixed die component A and does not perform the limiting action any more, as the movable die component B continues to be far away from the fixed die component A, the second inclined guide column 3 dials the second sliding block 2 to move along the X direction, the second sliding block 2 drives the second movable die 14 to be far away from the product 13, the core pulling action of the second core pulling component is realized, and when the second sliding block 2 is propped against the second limiting column 10, the whole core pulling action is completed.
The die assembly process comprises the following steps: the second inclined guide post 3 dials the second slide block 2 to move, then the first inclined guide post 8 dials the first slide block 9 to move, in the process, the compression amount of the spring 18 is between a flexible state (the compression ratio is in irregular change) until the second slide block 2 moves in place, the spring 18 is in a pre-pressing state, and thus the die assembly movement is completed once.
The injection mold and the delayed core pulling mechanism provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (5)
1. The delay core-pulling mechanism for the injection mold comprises a plurality of core-pulling assemblies for driving the movable mold to pull the core according to a preset core-pulling sequence, and is characterized in that any core-pulling assembly comprises an inclined guide pillar and a sliding block, wherein,
the sliding block is arranged on the movable die assembly (B) and sleeved outside the inclined guide post, and is used for being connected with a movable die of a product to be separated;
the inclined guide post is used for being connected with the fixed die assembly (A), and when the movable die assembly (B) and the fixed die assembly (A) are mutually far away, the sliding block slides along the inclined guide post to drive the movable die of the product to be separated from the product according to the preset core pulling sequence;
the core pulling mechanism comprises a first core pulling component which is used for pulling core along a first direction and a second core pulling component which is used for pulling core along a second direction, wherein the first direction and the second direction are mutually perpendicular, and the first core pulling component is used for pulling core before the second core pulling component; the first core pulling assembly includes:
the first inclined guide post (8) is connected with the fixed die assembly (A);
the first sliding block (9), one end of the first sliding block (9) is sleeved on the first inclined guide pillar (8), and the other end of the first sliding block is provided with a driving inclined plane;
a first movable die (12) of a product to be separated, wherein a driven inclined plane matched with the driving inclined plane is arranged on the first movable die (12), when the movable die assembly (B) is far away from the fixed die assembly (A), the first sliding block (9) slides along the first inclined guide pillar (8), and the driving inclined plane extrudes the driven inclined plane and enables the first movable die (12) to move along the first direction; the second core pulling assembly comprises:
the second inclined guide post (3) is connected with the fixed die assembly (A);
the second sliding block (2) is provided with a waist-shaped guide hole, and the second sliding block (2) is sleeved on the second inclined guide post (3) through the waist-shaped guide hole;
a second movable mould (14) of the product to be separated, wherein the second movable mould (14) is connected with the second sliding block (2);
in addition, the first sliding block (9) and the first movable die (12) are arranged on the second sliding block (2), and in the process that the movable die assembly (B) is away from the fixed die assembly (A), when the first sliding block (9) is not separated from the first inclined guide post (8), the side wall of the waist-shaped guide hole is not contacted with the second inclined guide post (3); when the first sliding block (9) is separated from the first inclined guide pillar (8), the side wall of the waist-shaped guide hole is in contact with the second inclined guide pillar (3), and the second sliding block (2) slides along the second inclined guide pillar (3) and drives the second movable die (14) to move along the second direction;
the first sliding block (9) is further provided with a first positioning groove (11), the second sliding block (2) is further provided with a first limiting column (7) matched with the first positioning groove (11), and when the first sliding block (9) is separated from the first inclined guide column (8), the first limiting column (7) is embedded into the first positioning groove (11);
the fixed die assembly (A) is further provided with a second positioning groove, the second sliding block (2) is further provided with a flexible limiting column (1), and the flexible limiting column (1) is embedded in the second positioning groove when the first sliding block (9) is not separated from the first inclined guide column (8) in the process that the movable die assembly (B) is away from the fixed die assembly (A); when the first sliding block (9) is separated from the first inclined guide pillar (8), the flexible limiting pillar (1) is separated from the second positioning groove.
2. The time delay core pulling mechanism according to claim 1, further comprising a locking block (6) connected to the fixed die assembly (a), wherein a first locking inclined plane is formed on the locking block (6), and a second locking inclined plane matched with the first locking inclined plane is further formed at one end of the first inclined guide pillar (8) sleeved with the first sliding block (9).
3. The time delay core pulling mechanism according to claim 1, wherein a limit post mounting hole is provided on the second slider (2), and the flexible limit post (1) comprises:
the limit screw (17) is embedded in the limit column mounting hole;
the limiting block (15) is fixed at the top of the limiting screw (17) and is matched with the second positioning groove;
a bump (16) fixed on the rod part of the limit screw (17);
and a spring (18) sleeved on the rod part of the limit screw (17), wherein one end of the spring is propped against the bump (16), and the other end of the spring is propped against the bottom of the limit column mounting hole.
4. The time delay core pulling mechanism according to claim 1, wherein a second positioning groove is further formed in the movable die assembly (B), a flexible limiting column (1) is further arranged on the fixed die assembly (a), and the flexible limiting column (1) is embedded in the second positioning groove when the first sliding block (9) is not separated from the first inclined guide column (8) in the process that the movable die assembly (B) is away from the fixed die assembly (a); when the first sliding block (9) is separated from the first inclined guide pillar (8), the flexible limiting pillar (1) is separated from the second positioning groove.
5. An injection mold comprising a fixed mold assembly (a), a movable mold assembly (B) and a delay core-pulling mechanism, wherein the delay core-pulling mechanism is the delay core-pulling mechanism as claimed in any one of claims 1 to 4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810575713.9A CN108527786B (en) | 2018-06-06 | 2018-06-06 | Injection mold and time delay core pulling mechanism thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810575713.9A CN108527786B (en) | 2018-06-06 | 2018-06-06 | Injection mold and time delay core pulling mechanism thereof |
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| CN108527786A CN108527786A (en) | 2018-09-14 |
| CN108527786B true CN108527786B (en) | 2023-09-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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