CN110142935B

CN110142935B - Pouring device for precise complex injection mold

Info

Publication number: CN110142935B
Application number: CN201910488265.3A
Authority: CN
Inventors: 张海苗; 赵川; 乔如春
Original assignee: Taizhou Yongshuo Auto Parts Co ltd
Current assignee: TAIZHOU YONGSHUO AUTO PARTS Co.,Ltd.
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2021-04-30
Anticipated expiration: 2039-06-05
Also published as: CN110142935A

Abstract

The invention provides a pouring device for a precise complex injection mold, and relates to the technical field of injection molds. This accurate complicated pouring device for injection mold, including fixed die holder, the left end fixed mounting of fixed die holder has the guide bar, the peripheral sliding connection of guide bar has the removal die holder, water in having seted up on the inside on fixed die holder right side, the right-hand member fixedly connected with injection molding machine of fixed die holder, the inside fixedly connected with of injection molding machine infuses the device, the top fixed mounting on injection molding machine right side has the pan feeding mouth, heating line has been seted up to the inside of injection molding machine. This accurate complicated pouring device for injection mold can make the material enter into complicated die cavity more fully, has improved the quality of product, and can guarantee the pressure in the die cavity when moulding plastics to automatic stopping infuse, thereby avoided because of infusing pressure and time and leading to the product nonconforming.

Description

Pouring device for precise complex injection mold

Technical Field

The invention relates to the technical field of injection molds, in particular to a pouring device for a precise and complex injection mold.

Background

The injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and accurate dimensions, and the injection molding is a processing method used for batch production of parts with complex shapes, in particular to a method for injecting heated and melted plastics into a mold cavity from an injection molding machine at high pressure and obtaining a formed product after cooling and solidification.

And traditional injection mold's injection molding machine is the solitary conveying pipeline that is driven by single worm gear pole, when the machining precision requires higher or the complicated spare part of shape, because the die cavity route is complicated behind the compound die, and meander, traditional injection molding machine can't carry the material fully to the die cavity in, cause the phenomenon of moulding plastics incompletely or product surface has the bubble easily, and in the in-process of moulding plastics, can't carry out accurate grasp to the pressure size and the time of moulding plastics, if the pressure of moulding plastics is too big or time overlength, make the material be full of in venthole or the compound die clearance easily, cause the waste of unqualified and material in the product surface, and if pressure undersize or time overlength, the material can't be abundant get into the die cavity, make the product incomplete.

In order to solve the above problems, the inventor proposes a pouring device for a precise complex injection mold, which has the advantages of allowing materials to enter a complex cavity more fully, improving the quality of products, ensuring the pressure in the cavity during injection molding, and automatically stopping infusion, thereby avoiding disqualification of the products caused by infusion pressure and time.

Disclosure of Invention

In order to achieve the purpose, the invention is realized by the following technical scheme: a pouring device for a precise complex injection mold comprises a fixed mold seat, a guide rod, a movable mold seat, an ingate, an injection molding machine, an infusion device and a feeding port.

The infusion device comprises a heating pipeline, an outer worm gear rod, a first conveying pipe, a transition pipe, an inner worm gear rod, a through hole, a second conveying pipe, a baffle and a valve.

The valve comprises a frame body, a spring, an expansion rod, a sawtooth, a gear and a valve core.

Wherein:

the injection molding machine is characterized in that a guide rod is fixedly mounted at the left end of the fixed die holder, a movable die holder is connected to the periphery of the guide rod in a sliding mode, an inner pouring gate is formed in the inner portion of the right side of the fixed die holder, an injection molding machine is fixedly connected to the right end of the fixed die holder, an infusion device is fixedly connected to the inner portion of the injection molding machine, and a feeding port is fixedly mounted at the top of the.

Preferably, a heating pipeline is arranged inside the injection molding machine, an outer worm gear is connected to the heating pipeline in a rotating mode, a transition pipe is communicated with the left end of the heating pipeline through a first conveying pipe, an inner worm gear is connected to the outer worm gear in a rotating mode, a through hole is formed in the periphery of the outer worm gear, a second conveying pipe is fixedly connected to the left end of the inner portion of the outer worm gear, a baffle is connected to the periphery of the second conveying pipe in a sliding mode, a valve is fixedly connected to the top end of the right side of the second conveying pipe, materials in the heating pipeline are driven by the outer worm gear to enter the transition pipe through the first conveying pipe, and the materials in the outer worm gear are driven by the inner worm gear to enter the transition pipe through the second conveying pipe.

Preferably, the telescopic rod is fixedly connected inside the frame body through a spring, the sawtooth is formed in one side of the right half portion of the telescopic rod, the gear is meshed with the top of the sawtooth, the valve core is fixedly mounted at the center of the gear, and when the telescopic rod moves, the gear can be driven to rotate through the sawtooth, so that the valve core is driven to deflect.

Preferably, the valve core is rotatably connected to the inside of the second material conveying pipe, the second material conveying pipe extends into the transition pipe, and the transition pipe is communicated with the ingate, so that materials conveyed into the transition pipe through the first material conveying pipe and the second material conveying pipe can penetrate through the ingate and enter the cavity, and when the valve core rotates, the second material conveying pipe can be sealed.

The invention provides a pouring device for a precise complex injection mold. The method has the following beneficial effects:

1. this pouring device for accurate complicated injection mold through the design of pouring into the device, can pour into the die cavity after the compound die with the material that melts through the effect of outer worm-gear, and the effect of interior worm-gear of recycling carries out the secondary with the inside material of outer worm-gear and pours into, makes the material enter into the die cavity of complicacy more fully, has improved the quality of product.

2. This pouring device for accurate complicated injection mold through the cooperation of valve in the pouring device, when carrying out the secondary pouring to the die cavity again, utilizes the pressure that adds large-scale intracavity to make the baffle move to the right side to when reaching certain pressure, the baffle can seal first conveying pipeline, and drive the case and seal the second conveying pipeline, consequently guaranteed the pressure in the die cavity when moulding plastics, and the automatic shutdown pouring, thereby avoided because of pouring pressure and time and leading to the product nonconforming.

Drawings

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

figure 2 is a cross-sectional view of the structure of the infusion device of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2;

fig. 4 is a top cross-sectional view of the valve structure of the present invention.

In the figure: the injection molding machine comprises a fixed die holder 1, a guide rod 2, a movable die holder 3, an ingate 4, an injection molding machine 5, an infusion device 6, a heating pipeline 61, an outer worm wheel rod 62, a first material conveying pipe 63, a transition pipe 64, an inner worm wheel rod 65, a through hole 66, a second material conveying pipe 67, a baffle 68, a valve 69, a frame 691, springs 692, a 693 telescopic rod, 694 sawteeth, a 695 gear, a 696 valve core and a material inlet 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the pouring device for the precise complex injection mold comprises the following steps:

referring to fig. 1-4, a casting apparatus for a complex precision injection mold includes a fixed mold base 1, a guide bar 2, a movable mold base 3, an ingate 4, an injection molding machine 5, an injection device 6, and a feeding port 7.

The infusion device 6 comprises a heating pipeline 61, an outer worm gear 62, a first delivery pipe 63, a transition pipe 64, an inner worm gear 65, a through hole 66, a second delivery pipe 67, a baffle 68 and a valve 69.

The valve 69 includes a frame 691, a spring 692, an expansion rod 693, a saw tooth 694, a gear 695, and a valve core 696.

Wherein:

a guide rod 2 is fixedly installed at the left end of a fixed die holder 1, a movable die holder 3 is connected to the periphery of the guide rod 2 in a sliding manner, an inner runner 4 is arranged inside the right side of the fixed die holder 1, an injection molding machine 5 is fixedly connected to the right end of the fixed die holder 1, an infusion device 6 is fixedly connected inside the injection molding machine 5, a heating pipeline 61 is arranged inside the injection molding machine 5, an outer worm wheel rod 62 is rotatably connected inside the heating pipeline 61, the left end of the heating pipeline 61 is communicated with a transition pipe 64 through a first conveying pipe 63, an inner worm wheel rod 65 is rotatably connected inside the outer worm wheel rod 62, a through hole 66 is arranged on the periphery of the outer worm wheel rod 62, a second conveying pipe 67 is fixedly connected inside the outer worm wheel rod 62, a baffle 68 is slidably connected to the periphery of the second conveying pipe 67, a valve 69 is fixedly connected to the top end of the right side of the second conveying pipe 67, and materials in the heating pipeline 61 are driven by, the material that drives in the outer worm gear 62 through interior worm gear 65 enters into transition pipe 64 through second conveying pipeline 67, through the design of infusing device 6, can infuse the die cavity after the compound die with the material that melts through the effect of outer worm gear 62, and the effect of interior worm gear 65 of recycling carries out secondary infusion with the inside material of outer worm gear 62, makes the material enter into complicated die cavity more fully, has improved the quality of product.

An expansion link 693 is fixedly connected to the inside of the frame 691 through a spring 692, a sawtooth 694 is formed on one side of the right half portion of the expansion link 693, a gear 695 is engaged with the top of the sawtooth 694, a valve core 696 is fixedly installed at the center of the gear 695, when the expansion link 693 moves, the gear 695 can be driven to rotate through the sawtooth 694, so that the valve core 696 is driven to deflect, the valve core 696 is rotatably connected to the inside of the second material conveying pipe 67, the second material conveying pipe 67 extends into the transition pipe 64, and the transition pipe 64 is communicated with the inner pouring gate 4, so that the material conveyed into the transition pipe 64 through the first material conveying pipe 63 and the second material conveying pipe 67 can pass through the inner pouring gate 4 to enter the cavity, when the valve core 696 rotates, the second material conveying pipe 67 can be sealed, an infusion port 7 is fixedly installed at the top of the right side of the injection molding machine 5, and when the cavity is secondarily injected, the baffle 68 is moved to the right side by the pressure in the enlarged cavity, so that when a certain pressure is reached, the baffle 68 can seal the first material conveying pipe 63 and drive the valve core 696 to seal the second material conveying pipe 67, the pressure in the cavity during injection molding is ensured, and the injection is automatically stopped, thereby avoiding unqualified products caused by the injection pressure and time.

When the injection molding machine is used, injection molding materials are poured into a heating pipeline 61 in the injection molding machine 5 from a feeding port 7, the injection molding machine 5 is opened to be fully melted, during injection molding, the movable die holder 3 is moved rightwards and attached to the fixed die holder 1 to achieve a die closing state, the outer worm wheel rod 62 is rotated by using the control device, so that the melted materials are pushed towards the left side and pushed away from a baffle 68 to enter a transition pipe 64 from a first material conveying pipe 63, and finally enter a die cavity for die closing through the inner pouring channel 4, the melted materials in the heating pipeline 61 can enter the inner part of the outer worm wheel rod 62 from a through hole 66 on the periphery of the outer worm wheel rod 62, the materials in the outer worm wheel rod 62 can be guided into the transition pipe 64 through a second material conveying pipe 67 through the rotation of the inner worm wheel rod 65, and the materials in the die cavity can be continuously poured into the outer worm wheel rod 62 after the outer worm wheel rod 62 stops working, when the material in the cavity reaches a certain pressure, the pressure on the left side of the baffle 68 is larger than the pressure supplied by the right heating pipeline 61 through continuous filling, so that the material is pushed into the first material conveying pipe 63 to seal the first material conveying pipe 63, the telescopic rod 693 is driven to move rightwards in the process that the baffle 68 moves rightwards, and the toothed 694 on the telescopic rod 693 is matched with the gear 695, so that the gear 695 drives the valve core 696 to rotate and seal the second material conveying pipe 67, so that the feeding can be automatically stopped after the material in the cavity reaches a certain pressure, and the control is convenient.

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, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a 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 pouring device for accurate complicated injection mold, includes fixed die holder (1), its characterized in that: a guide rod (2) is fixedly installed at the left end of the fixed die holder (1), a movable die holder (3) is connected to the periphery of the guide rod (2) in a sliding mode, an inner pouring channel (4) is formed in the inner portion of the right side of the fixed die holder (1), an injection molding machine (5) is fixedly connected to the right end of the fixed die holder (1), an infusion device (6) is fixedly connected to the inner portion of the injection molding machine (5), and a feeding port (7) is fixedly installed at the top of the right side of the injection molding machine (5;

the infusion device (6) comprises a heating pipeline (61), an outer worm wheel rod (62), a first conveying pipe (63), a transition pipe (64), an inner worm wheel rod (65), a through hole (66), a second conveying pipe (67), a baffle (68) and a valve (69), a heating pipeline (61) is arranged inside the injection molding machine (5), an outer worm wheel rod (62) is rotatably connected inside the heating pipeline (61), the left end of the heating pipeline (61) is communicated with a transition pipe (64) through a first material conveying pipe (63), the inner part of the outer worm wheel rod (62) is rotatably connected with an inner worm wheel rod (65), a through hole (66) is arranged on the periphery of the outer worm wheel rod (62), a second conveying pipe (67) is fixedly connected with the left end inside the outer worm wheel rod (62), a baffle (68) is connected to the periphery of the second conveying pipe (67) in a sliding manner, and a valve (69) is fixedly connected to the top end of the right side of the second conveying pipe (67);

the valve (69) comprises a frame (691), a spring (692), an expansion link (693), saw teeth (694), a gear (695) and a valve core (696), wherein the expansion link (693) is fixedly connected to the inside of the frame (691) through the spring (692), the saw teeth (694) are arranged on one side of the right half part of the expansion link (693), the gear (695) is engaged with the top of the saw teeth (694), and the valve core (696) is fixedly installed in the center of the gear (695);

the valve core (696) is rotatably connected to the inner portion of the second material conveying pipe (67), the second material conveying pipe (67) extends into the transition pipe (64), and the transition pipe (64) is communicated with the inner pouring channel (4).