CN220112275U - Fixed die deep cavity pin exhaust structure - Google Patents

Abstract

The utility model discloses a fixed die deep cavity pin exhaust structure, which comprises an upper die core and a lower die core, wherein a die cavity is formed between the upper die core and the lower die core, and an insert is vertically arranged in the lower die core in a left-right asymmetric manner, and is characterized in that: the upper end of the upper mold core is provided with a plurality of grooves, exhaust pins are vertically arranged in the grooves and are in a step shape, each exhaust pin comprises a mounting section arranged at the upper end of the upper mold core, an exhaust section is arranged below the mounting section, a sliding section is arranged below the exhaust section, an exhaust structure which is used for communicating the exhaust section with a mold cavity is arranged on the outer wall of the sliding section, and a molding section for molding product holes is arranged below the sliding section; the vertical length of the slot is larger than that of the mounting section of the exhaust pin, and the utility model can solve the problems that the hole position at the deep cavity of the existing fixed die is difficult to exhaust, even can not exhaust, and the product is easy to generate air holes or shrink holes to cause low qualification rate.

Description

Fixed die deep cavity pin exhaust structure

Technical Field

The utility model relates to the field of dies, in particular to a fixed die deep cavity pin exhaust structure.

Background

The exhaust effect of the die cavity is one of the key factors for determining the final forming quality of the product, when certain products with higher ratio are manufactured, because of the limitation of the product structure, the difficult or even impossible exhaust of the hole site at the fixed die depth cavity is generated, the product is easy to generate air holes or shrinkage holes, the product qualification rate is low, and therefore, the pin shaft at the fixed die depth cavity is optimized to be used as an auxiliary exhaust structure in the die cavity.

Disclosure of Invention

The utility model provides a fixed die deep cavity pin exhaust structure, which can solve the problems that the hole site at the deep cavity of the existing fixed die is difficult to exhaust and even can not exhaust, so that air holes or shrinkage holes are easy to generate in products, and the qualification rate is low.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a dark chamber pin exhaust structure of cover half, includes mold core and lower mold core, the mold core is the state setting of stacking with lower mold core, form the die cavity between upper mold core and the lower mold core, the asymmetric vertical block that is provided with about in the lower mold core, its characterized in that: the upper end of the upper mold core is provided with a plurality of grooves, exhaust pins are vertically arranged in the grooves, and the exhaust pins are in sliding connection with the upper mold core; the exhaust pin is in a step shape, the exhaust pin comprises a mounting section arranged at the upper end of the upper mold core, an exhaust section is arranged below the mounting section, a sliding section is arranged below the exhaust section, the sliding section is arranged inside the upper mold core in a sliding manner, an exhaust structure which is used for communicating the exhaust section with a mold cavity is arranged on the outer wall of the sliding section, and a molding section for molding a product hole is arranged below the sliding section; the vertical length of fluting is greater than the vertical length of the installation section of exhaust round pin, the fluting below vertically be provided with exhaust round pin's smooth section assorted slide hole increases exhaust round pin activity interval, and the exhaust round pin of die sinking all can be along with product drawing of patterns a distance forward to reach the effect of clearance exhaust groove.

Preferably, a pin shaft for forming a product hole is arranged under the exhaust pin in a lifting manner, the outer wall of the pin shaft is positioned in the insert, a pin sleeve is vertically arranged in the insert, and the pin sleeve is in sliding connection with the pin shaft, so that the structure is simple, and the operation is convenient.

Preferably, the exhaust structure is a plurality of exhaust grooves uniformly distributed on the outer wall of the sliding section along the circumferential direction, and the exhaust grooves penetrate through the sliding section along the axial direction of the exhaust pin and are communicated with the die cavity to serve as a gas exhaust channel.

Preferably, the exhaust groove has a groove width of 2mm and a groove depth of 0.05mm, and is simple in structure and convenient to process.

Preferably, the outer diameter of the exhaust section is 0.2mm smaller than that of the sliding fit section, and the exhaust groove can be cleaned so as not to be blocked by aluminum scraps.

Compared with the prior art, the utility model has the beneficial effects that:

simple structure, convenient operation has adjusted the activity interval of cover half exhaust round pin, increases the exhaust groove of exhaust round pin periphery, makes the inside gaseous exhaust of die cavity, and during the die sinking, the exhaust round pin can all move a section distance forward along with the product drawing of patterns to reach the effect of clearance exhaust groove, can solve current cover half deep cavity department hole site exhaust difficulty, can't exhaust even, lead to the product to produce gas pocket or shrinkage cavity easily and cause the problem that the qualification rate is low.

Drawings

FIG. 1 is a schematic diagram of a schematic cross-sectional view of a mold according to the present utility model;

FIG. 2 is a cross-sectional block diagram of the present utility model;

FIG. 3 is a cross-sectional block diagram of the vent pin and upper core of the present utility model;

FIG. 4 is an enlarged partial cross-sectional view of the present utility model;

fig. 5 is a block diagram of the exhaust pin of the present utility model.

Reference numerals:

1. the upper mold core, 2, the lower mold core, 21, the insert, 31, the exhaust pin, 311, the mounting section, 312, the exhaust section, 313, the sliding fit section, 314, the exhaust structure, 315, the forming section, 316, the exhaust groove, 32, the pin shaft, 33 and the pin sleeve.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1-5, the utility model provides the following technical scheme for solving the problems that the prior fixed die deep cavity is difficult to exhaust, even can not exhaust, and the product is easy to generate air holes or shrink holes to cause low qualification rate: the utility model provides a dark chamber pin exhaust structure of cover half, includes mold core 1 and lower mold core 2, upward mold core 1 is the state setting of stacking with lower mold core 2, form the die cavity between upper mold core 1 and the lower mold core 2, the asymmetric vertical insert 21 that is provided with about in the lower mold core 2, its characterized in that: the upper end of the upper mold core 1 is provided with a plurality of grooves 11, exhaust pins 31 are vertically arranged in the grooves 11, and the exhaust pins 31 are in sliding connection with the upper mold core 1; the exhaust pin 31 is in a step shape, the exhaust pin 31 comprises a mounting section 311 arranged at the upper end of the upper mold core 1, an exhaust section 312 is arranged below the mounting section 311, a sliding section 313 is arranged below the exhaust section 312, the sliding section 313 is arranged inside the upper mold core 1 in a sliding manner, an exhaust structure 314 which communicates the exhaust section 312 with a mold cavity is arranged on the outer wall of the sliding section 313, and a molding section 315 for molding a product hole is arranged below the sliding section 313; the vertical length of the slot 11 is greater than that of the mounting section 311 of the exhaust pin 31, a sliding hole 12 matched with the sliding section 313 of the exhaust pin 31 is vertically arranged below the slot 11, the movable distance of the exhaust pin is increased, and each time the mold opening exhaust pin moves forwards along with the demolding of a product for a certain distance, so that the effect of cleaning the exhaust slot is achieved.

Specifically, a pin shaft 32 for forming a product hole is arranged under the exhaust pin 31 in a lifting manner, a pin sleeve 33 is vertically arranged in the insert 21 on the outer wall of the pin shaft 32, and the pin sleeve 33 is in sliding connection with the pin shaft 32, so that the structure is simple and the operation is convenient.

In this embodiment, as shown in fig. 2, a pin shaft 32 for forming a product hole is provided under the exhaust pin 31 in a liftable manner, the outer wall of the pin shaft 32 is located inside the insert 21, and a pin sleeve 33 is vertically provided, and the pin sleeve 33 is slidably connected with the pin shaft 32, so that the structure is simple and the operation is convenient.

In this embodiment, as shown in fig. 5, the air exhaust structure 314 is a plurality of air exhaust grooves 316 uniformly distributed along the circumferential direction on the outer wall of the sliding section 313, and the air exhaust grooves 316 are disposed along the axial direction of the air exhaust pin 31, penetrate through the sliding section 313, and communicate the air exhaust section 312 with the mold cavity, as an air exhaust channel.

In this embodiment, as shown in fig. 5, the exhaust groove 316 has a groove width of 2mm and a groove depth of 0.05mm, and has a simple structure and is convenient to process.

In this embodiment, as shown in fig. 1, during the production and processing, an operator places the upper mold core 1 and the lower mold core 2 in a mold frame, the upper mold core 1 and the lower mold core 2 are arranged in a stacked state, the pin shaft 32 slides upwards in the pin sleeve 33, the pin shaft 32 and the forming section 315 of the exhaust pin 31 form a product hole shape, a solution is poured into the mold cavity from the sprue sleeve, after cooling, the pin shaft 32 descends, mold opening is performed, the vertical length of the slot 11 is greater than the vertical length of the mounting section 311 of the exhaust pin 31, during the mold opening, the mounting section 311 of the exhaust pin 31 moves a certain distance in the slot 11 along with the demolding of the product, the exhaust pin 31 communicates the outside with the mold cavity through the exhaust slot 316, so that the gas of the mold cavity is smoothly discharged, and the exhaust slot 316 is cleaned and is not blocked by aluminum scraps.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present utility model) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Claims (5)

1. A fixed mold deep cavity pin exhaust structure comprising:

go up mold core (1) and lower mold core (2), go up mold core (1) and lower mold core (2) and be the state setting that stacks, form the die cavity between last mold core (1) and lower mold core (2), asymmetric vertical being provided with inserts (21), its characterized in that about in lower mold core (2): the upper end of the upper mold core (1) is provided with a plurality of grooves (11), exhaust pins (31) are vertically arranged in the grooves (11), and the exhaust pins (31) are in sliding connection with the upper mold core (1);

the exhaust pin (31) is in a step shape, the exhaust pin (31) comprises a mounting section (311) arranged at the upper end of the upper mold core (1), an exhaust section (312) is arranged below the mounting section (311), a sliding section (313) is arranged below the exhaust section (312), the sliding section (313) is arranged inside the upper mold core (1) in a sliding manner, an exhaust structure (314) which is used for communicating the exhaust section (312) with a mold cavity is arranged on the outer wall of the sliding section (313), and a molding section (315) used for molding a product hole is arranged below the sliding section (313);

the vertical length of the slot (11) is larger than that of the mounting section (311) of the exhaust pin (31), and a sliding hole (12) matched with the sliding section (313) of the exhaust pin (31) is vertically arranged below the slot (11).

2. The fixed depth cavity pin venting structure of claim 1, wherein: the novel exhaust pin is characterized in that a pin shaft (32) for forming a product hole is arranged under the exhaust pin (31) in a lifting mode, a pin sleeve (33) is vertically arranged in the insert (21) on the outer wall of the pin shaft (32), and the pin sleeve (33) is in sliding connection with the pin shaft (32).

3. The fixed depth cavity pin venting structure of claim 1, wherein: the exhaust structure (314) is a plurality of exhaust grooves (316) uniformly distributed on the outer wall of the sliding section (313) along the circumferential direction, and the exhaust grooves (316) penetrate through the sliding section (313) along the axial direction of the exhaust pin (31) and are communicated with the exhaust section (312) and the die cavity.

4. The fixed die deep cavity pin exhaust structure of claim 3, further characterized by: the exhaust groove (316) has a groove width of 2mm and a groove depth of 0.05mm.

5. The fixed depth cavity pin venting structure of claim 1, wherein: the outer diameter of the venting section (312) is 0.2mm smaller than the outer diameter of the slip-fit section (313).