CN209775436U

CN209775436U - Vacuumizing rapid exhaust injection mold structure

Info

Publication number: CN209775436U
Application number: CN201920621351.2U
Authority: CN
Inventors: 文建平
Original assignee: Dongguan Han Sheng Hardware & Plastic Co Ltd
Current assignee: Dongguan Han Sheng Hardware & Plastic Co Ltd
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2019-12-13
Anticipated expiration: 2029-05-05

Abstract

The utility model discloses an evacuation quick exhaust injection mold structure, the on-line screen storage device comprises an installation base, the up end fixedly connected with fixed mould of installation base, the middle part of fixed mould is provided with down the die cavity, the both sides of fixed mould are provided with the cooperation ear, the up end symmetry of cooperation ear is provided with the helical pitch post, the below that lies in down the die cavity in the fixed mould is provided with the cooling chamber, the middle part of terminal surface is through advancing oil pipe and cooling chamber intercommunication before the fixed mould, the top of fixed mould is through mount pad fixedly connected with removal mould, the inner chamber of removing the mould has vacuum apparatus through managing the intercommunication to find time, the upper portion intercommunication of removing the mould is provided with the injection molding pipe, the utility model relates to an injection mold technical field. This quick exhaust injection mold structure of evacuation can the effectual air of discharging the injection mold intracavity, forms vacuum environment, improves to mould a quality and has guaranteed drawing of patterns efficiency.

Description

vacuumizing rapid exhaust injection mold structure

Technical Field

the utility model relates to an injection mold technical field specifically is an evacuation quick exhaust injection mold structure.

Background

The die is various dies and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. The element has the name of "industrial mother". The blank is formed into a tool with a specific shape and size under the action of external force. The method is widely applied to blanking, die forging, cold heading, extrusion, powder metallurgy part pressing, pressure casting and the forming processing of compression molding or injection molding of products such as engineering plastics, rubber, ceramics and the like. The die has a specific contour or cavity shape, and the blank can be separated (blanked) according to the contour shape by applying the contour shape with the cutting edge. The blank can obtain a corresponding three-dimensional shape by using the shape of the inner cavity. The mold generally comprises a movable mold and a fixed mold (or a male mold and a female mold), which can be separated or combined. When the blank is closed, the blank is injected into the die cavity for forming. The die is a precise tool, has a complex shape, bears the expansion force of a blank, has higher requirements on structural strength, rigidity, surface hardness, surface roughness and processing precision, and the development level of die production is one of important marks of the mechanical manufacturing level.

When the rapid injection molding is carried out, the melt possibly blocks the exhaust groove, so that the gas in the injection molding cavity of the mold cannot be exhausted, and the gas is wrapped in the injection molding cavity to cause the bad phenomena of air holes or bubbles and the like of the plastic part, thereby affecting the quality of the plastic part. Meanwhile, the pressure of the cavity of the mold can be sharply increased due to gas compression, the mold can be deformed due to high pressure, local flash of the mold is caused, the mold is even damaged, the service life of the mold is shortened, and the phenomenon that the product is difficult to take out due to the fact that the existing injection mold is not easy to demould is also caused.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a quick exhaust injection mold structure of evacuation has solved the problem that current injection mold injection molding intracavity air influences great and drawing of patterns inefficiency to moulding.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an evacuation injection mold structure that exhausts fast, includes the installation base, the up end fixedly connected with fixed mould of installation base, the middle part of fixed mould is provided with down the die cavity, the both sides of fixed mould are provided with the cooperation ear, the up end symmetry of cooperation ear is provided with the helical pitch post, the below that lies in down the die cavity in the fixed mould is provided with the cooling chamber, the middle part of terminal surface is through advancing oil pipe and cooling chamber intercommunication before the fixed mould, the top of fixed mould is through mount pad fixedly connected with removal mould, the inner chamber that removes the mould has vacuum apparatus through managing to find time the intercommunication, the upper portion intercommunication that removes the mould is provided with the pipe of moulding plastics.

The vacuum device comprises a base, wherein a vacuum pump is arranged on the upper end face of the base, the air exhaust end of the vacuum pump is communicated with an evacuation pipe through a connecting hoop, a regulating valve is arranged on the part, close to the connecting hoop, of the evacuation pipe, and a pressure valve is arranged at the air exhaust end of the vacuum pump.

Preferably, the movable die comprises an upper die cavity, the upper die cavity is arranged at the lower part of the movable die, one section of the evacuation pipe, which is located on the inner wall of the movable die, is provided with an electromagnetic one-way valve, and a liquid detector is arranged above the upper die cavity, which is located in the movable die and is provided with a liquid detector through a mounting hole.

Preferably, the outside of helical pitch post all is provided with spacing spring, the mount pad up end is located the right side correspondence of helical pitch post and is provided with the cooperation cover, cooperation cover and helical pitch post sliding connection.

Preferably, the rear end face of the fixed die is communicated with the cooling cavity through an oil outlet pipe, and one end of the oil outlet pipe is provided with an oil outlet valve.

Preferably, the fixed die upper end surface is provided with a sealing groove in the periphery of the lower die cavity, the movable die lower end surface is provided with a sealing strip in the periphery of the upper die cavity, and the sealing strip is in plug-in connection with the sealing groove.

(III) advantageous effects

The utility model provides a quick exhaust injection mold structure of evacuation. The method has the following beneficial effects:

(1) The vacuum-pumping rapid-exhaust injection mold structure is characterized in that limiting springs are arranged outside the lead columns, matching sleeves are correspondingly arranged on the upper end surfaces of the mounting seats and are positioned right above the lead columns, the matching sleeves are in sliding connection with the lead columns, the precise positioning is realized through the lead column and the matching sleeve, the demoulding efficiency can be improved through the limiting spring, the rear end face of the fixed mould is communicated with the cooling cavity through the oil outlet pipe, one end of the oil outlet pipe is provided with an oil outlet valve which can facilitate the recycling of cooling oil in the cooling cavity, one section of the evacuation pipe, which is positioned on the inner wall of the movable mould, is provided with an electromagnetic one-way valve, a liquid detector is arranged above the upper mould cavity and is positioned in the movable mould through a mounting hole, when liquid plastic reaches the mounting hole, a signal can be sent out in time, therefore, the liquid plastic is stopped from being added again, the material waste is avoided, and the purposes of avoiding the material waste and improving the demoulding efficiency are achieved.

(2) The vacuumizing rapid exhaust injection mold structure is characterized in that a sealing strip is arranged on the periphery of an upper mold cavity through the lower end surface of a movable mold, the sealing strip is connected with a sealing groove in an inserting manner, the sealing strip is matched with the sealing groove, when the upper and lower die cavities are closed, the tightness of the die cavities can be ensured, the upper end surface of the base is provided with a vacuum pump, the air exhaust end of the vacuum pump is communicated with an evacuation pipe through a connecting hoop, the part of the evacuation pipe close to the connecting hoop is provided with a regulating valve, the air exhaust end of the vacuum pump is provided with a pressure valve, before the injection molding is started, the movable mold and the fixed mold are closed, so that the upper mold cavity and the lower mold cavity are closed, the upper mold cavity and the lower mold cavity are sealed and airtight under the action of the sealing strip and the sealing groove, the vacuum pump and the electromagnetic one-way valve are started at the moment, therefore, the upper and lower die cavities are vacuumized by the vacuumizing pipe, so that the die cavity becomes a closed vacuum cavity and the quality of injection products is effectively improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the embodiment of the present invention;

FIG. 3 is a schematic structural view of a fixed mold according to the present invention.

In the figure: the device comprises a mounting base 1, a fixed mould 2, a lower mould cavity 21, a matching lug 22, a sealing groove 23, a cooling cavity 3, an oil inlet pipe 31, an oil outlet pipe 32, an oil outlet valve 33, a lead column 4, a limiting spring 41, a matching sleeve 42, a mounting base 5, a movable mould 6, an upper mould cavity 61, a sealing strip 62, a liquid detector 63, an electromagnetic one-way valve 64, an injection-molded pipe 7, a vacuum device 8, a base 81, a vacuum pump 82, a pressure valve 83, a regulating valve 84, a connecting hoop 85 and an evacuated tube 86.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a vacuum-pumping rapid exhaust injection mold structure comprises an installation base 1, wherein a fixed mold 2 is fixedly connected to the upper end face of the installation base 1, a sealing groove 23 is formed in the periphery of the upper end face of the fixed mold 2, which is located at a lower mold cavity 21, a lower mold cavity 21 is formed in the middle of the fixed mold 2, matching lugs 22 are arranged on two sides of the fixed mold 2, lead columns 4 are symmetrically arranged on the upper end faces of the matching lugs 22, limiting springs 41 are arranged outside the lead columns 4, matching sleeves 42 are correspondingly arranged right above the lead columns 4 on the upper end face of an installation base 5, the matching sleeves 42 are in sliding connection with the lead columns 4, accurate positioning is realized through the lead columns 4 and the matching sleeves 42, demolding efficiency can be improved through the limiting springs 41, a cooling cavity 3 is arranged below the lower mold cavity 21 in the fixed mold 2, the middle of the front end face of the fixed mold 2 is communicated with the cooling cavity 3 through an oil inlet pipe 31, the rear end face of the fixed die 2 is communicated with the cooling cavity 3 through the oil outlet pipe 32, one end of the oil outlet pipe 32 is provided with the oil outlet valve 33, the cooling oil in the cooling cavity 3 can be conveniently recycled, the movable die 6 is fixedly connected with the fixed die 2 through the mounting seat 5, the movable die 6 comprises an upper die cavity 61, the upper die cavity 61 is arranged at the lower part of the movable die 6, the sealing strip 62 is arranged on the periphery of the upper die cavity 61 on the lower end face of the movable die 6, the sealing strip 62 is in plug-in connection with the sealing groove 23, the sealing strip 62 is matched with the sealing groove 23, when the upper die cavity and the lower die cavity are closed, the airtightness of the die cavity can be ensured, so that the vacuum device 8 can conveniently pump the cavity to be in a vacuum state, the inner cavity of the movable die 6 is communicated with the vacuum device 8 through the evacuation pipe 86, one section of the evacuation pipe 86, go up die cavity 61 top and be located the removal mould 6 in be provided with liquid detector 63 through the mounting hole, when liquid was moulded and has reached in the mounting hole, can in time send a signal to stop to add liquid once more and mould, avoid the material extravagant, the upper portion intercommunication of removal mould 6 is provided with injection molding pipe 7.

The vacuum device 8 comprises a base 81, a vacuum pump 82 is arranged on the upper end face of the base 81, the pumping end of the vacuum pump 82 is communicated with a pumping-out pipe 86 through a connecting hoop 85, a regulating valve 84 is arranged on the part, close to the connecting hoop 85, of the pumping-out pipe 86, the pumping-out end of the vacuum pump 82 is provided with a pressure valve 83, before injection molding starts, the movable mold 6 and the fixed mold 2 are firstly closed, so that an upper mold cavity and a lower mold cavity are closed, the upper mold cavity and the lower mold cavity are airtight under the action of a sealing strip 62 and a sealing groove 23, the vacuum pump 82 and the electromagnetic one-way valve 64 are started at the moment, so that the upper mold cavity and the lower mold cavity.

During operation, the matching sleeve 42 is connected with the lead column 4 in a sliding manner, accurate positioning is realized through the lead column 4 and the matching sleeve 42, demoulding efficiency can be improved through the limiting spring 41, the rear end face of the fixed die 2 is communicated with the cooling cavity 3 through the oil outlet pipe 32, one end of the oil outlet pipe 32 is provided with the oil outlet valve 33, cooling oil in the cooling cavity 3 can be conveniently recycled, one section of the evacuation pipe 86, which is positioned on the inner wall of the movable die 6, is provided with the electromagnetic one-way valve 64, the upper portion of the upper die cavity 61, which is positioned in the movable die 6, is provided with the liquid detector 63 through the mounting hole, when the liquid plastic reaches the mounting hole, a signal can be sent in time, so that the liquid plastic is stopped to be added again, material waste is avoided, the sealing strip 62 is matched with the sealing groove 23, when the upper die cavity and the lower die cavity are closed, the, therefore, the upper and lower mold cavities are closed, the upper and lower mold cavities are sealed and airtight under the action of the sealing strip 62 and the sealing groove 23, the vacuum pump 82 and the electromagnetic one-way valve 64 are started at the moment, and the upper and lower mold cavities are vacuumized by the vacuumizing pipe 86, so that the upper and lower mold cavities become sealed vacuum cavities, and the effect of improving the quality of injection molding products is achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a quick exhaust injection mold structure of evacuation, includes installation base (1), its characterized in that: the upper end face of the mounting base (1) is fixedly connected with a fixed die (2), the middle of the fixed die (2) is provided with a lower die cavity (21), two sides of the fixed die (2) are provided with matching lugs (22), the upper end faces of the matching lugs (22) are symmetrically provided with lead columns (4), a cooling cavity (3) is arranged below the lower die cavity (21) in the fixed die (2), the middle of the front end face of the fixed die (2) is communicated with the cooling cavity (3) through an oil inlet pipe (31), the upper part of the fixed die (2) is fixedly connected with a movable die (6) through a mounting seat (5), the inner cavity of the movable die (6) is communicated with a vacuum device (8) through an emptying pipe (86), and the upper part of the movable die (6) is communicated with an injection molding pipe (7);

Vacuum device (8) include base (81), the up end of base (81) is provided with vacuum pump (82), the end of bleeding of vacuum pump (82) is through connecting hoop (85) and evacuation pipe (86) intercommunication, the part that evacuation pipe (86) are close to connecting hoop (85) is provided with governing valve (84), the end of bleeding of vacuum pump (82) is provided with pressure valve (83).

2. The structure of claim 1, wherein: the movable die (6) comprises an upper die cavity (61), the upper die cavity (61) is arranged at the lower part of the movable die (6), an electromagnetic one-way valve (64) is arranged at one section of the evacuation pipe (86) positioned on the inner wall of the movable die (6), and a liquid detector (63) is arranged above the upper die cavity (61) in the movable die (6) through a mounting hole.

3. The structure of claim 1, wherein: the outside of helical pitch post (4) all is provided with spacing spring (41), mount pad (5) up end is located helical pitch post (4) and corresponds directly over and is provided with cooperation cover (42), cooperation cover (42) and helical pitch post (4) sliding connection.

4. The structure of claim 1, wherein: the rear end face of the fixed die (2) is communicated with the cooling cavity (3) through an oil outlet pipe (32), and one end of the oil outlet pipe (32) is provided with an oil outlet valve (33).

5. The structure of claim 1, wherein: the periphery that fixed mould (2) up end was located die cavity (21) down is provided with seal groove (23), the periphery that removes die (6) down end face and is located last die cavity (61) is provided with sealing strip (62), sealing strip (62) and seal groove (23) plug-in connection.