CN113580505A

CN113580505A - Demoulding structure without thimble imprints and elbow mould

Info

Publication number: CN113580505A
Application number: CN202110761528.0A
Authority: CN
Inventors: 李一峰; 赵子文; 陈天
Original assignee: Bear Electrical Appliance Co Ltd; Foshan Bear Intelligent Electric Appliance Co Ltd
Current assignee: Bear Electrical Appliance Co Ltd; Foshan Bear Intelligent Electric Appliance Co Ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2021-11-02

Abstract

The invention discloses a demoulding structure without thimble marks and an elbow mould, wherein the demoulding structure comprises a rear mould core, a front mould core and a mould core assembly, and the front mould core and the rear mould core are matched with each other to form at least one mould cavity; the core assembly comprises at least one slide core, a slide and a stop block, the core end of the slide core is arranged in the cavity, the other end of the slide core is connected with the slide, the stop block is arranged between the rear mold core and the slide, and the slide core penetrates through the stop block. This demoulding structure is through setting up the dog between back mould benevolence and capable position, during the drawing of patterns, after removing front mould benevolence, moves the capable position and drives the capable position core motion, makes the capable position core take injection moulding product to move together, stops and breaks away from with the separation of the capable position core until injection moulding product by the dog, realizes that injection moulding product does not have thimble seal of a government organization in old china ground drawing of patterns, can not leave thimble seal of a government organization in old china on injection moulding product surface, improves the aesthetic property of product.

Description

Demoulding structure without thimble imprints and elbow mould

Technical Field

The invention relates to the technical field of dies, in particular to a demolding structure without thimble marks and an elbow die.

Background

The plastic pipe fitting is widely applied to water supply and drainage of buildings, has various styles, such as a straight-through pipe fitting, an elbow pipe fitting, a tee pipe fitting, a four-way pipe fitting and the like, and can be divided into an equal-diameter pipe fitting and a reducing pipe fitting according to the diameter. The existing elbow pipe fittings are formed by transiting and connecting two straight pipes through small arcs, so that included angles of 60 degrees, 75 degrees, 90 degrees, 135 degrees and the like are formed.

In life, the equal-diameter elbow products are widely applied, and the products are mainly produced in batches through injection molds. At present, an injection mold for the constant-diameter elbow is generally a mold for mass production with sixteen holes, the mold is applied to produce the constant-diameter elbow, and glue is fed from the side surface during injection molding; and when the mold is demoulded after cooling, the front mold core and the slide mold core are firstly drawn out, then the ejector mechanism of the injection molding machine is used for ejecting an ejector plate of the mold to enable the product and the runner to fall off, or the runner is directly ejected, and then the runner takes the product out. The structure of the existing equal-diameter elbow injection mold ensures that the production period of a product is long, and the surface of the product is marked with an ejector pin; the product is laterally fed with glue, so that the appearance of the product is not attractive after the water gap is manually cut.

Disclosure of Invention

In order to overcome at least one defect in the prior art, the invention provides a demolding structure without thimble marks and an elbow mold, so as to solve the problem that the appearance is affected by the thimble marks and the water gap notches on the surface of a product.

The technical scheme adopted by the invention for solving the problems is as follows:

in a first aspect, the present invention discloses a mold release structure without a pin mark, comprising:

a rear mold core;

the front mold core and the rear mold core are matched with each other to form at least one cavity; and the number of the first and second groups,

the mold core assembly comprises at least one slide mold core, a slide and a stop block, the mold core end of the slide mold core is arranged in the mold cavity, the other end of the slide mold core is connected with the slide, the stop block is arranged between the rear mold core and the slide, and the slide mold core penetrates through the stop block.

According to the demolding structure provided by the invention, the stop block is arranged between the rear mold core and the slide, when demolding is carried out, the slide is moved to drive the slide mold core to move after the front mold core is removed, so that the slide mold core drives the injection product to move together until the injection product is stopped by the stop block and separated from the slide mold core, the demolding of the injection product without thimble marks is realized, the thimble marks cannot be left on the surface of the injection product, and the attractiveness of the product is improved.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, the front core is connected to at least one front core, and a core end of the front core is disposed in the cavity and is matched with the slide core to form a product core.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, at least one heat flow pipe penetrates through the front mold core, and the heat flow pipe communicates with the mold cavity.

As an alternative, in an embodiment of the first aspect of the invention, the slide and the slide core are fixedly connected by means of an insert connection.

In a second aspect, the invention also discloses an elbow die, which comprises a panel, a front template, a bottom plate and at least one group of demoulding structures arranged between the front template and the bottom plate, wherein the panel, the front template and the bottom plate are arranged from top to bottom;

the front die core is connected to the front template, the rear die core is connected to the bottom plate, and the stop block is arranged between the bottom plate and the front template.

According to the elbow mould provided by the invention, the thimble-mark-free demoulding structure is adopted, the front mould core is connected on the front mould plate, the rear mould core is connected on the bottom plate, the stop block is arranged between the bottom plate and the front mould plate, so that the injection moulding product can be demoulded without thimble marks, and the water gap is arranged on the pipe orifice surface of the elbow, so that the attractiveness of the elbow pipe body is not influenced.

As an alternative, in an embodiment of the second aspect of the present invention, the slide is connected to at least one inclined guide pillar, one end of the inclined guide pillar is connected to the bottom plate, and the other end of the inclined guide pillar is connected to an inclined guide pillar pressing block, and the inclined guide pillar pressing block is connected to the front mold core in a snap-fit manner.

As an alternative implementation manner, in the embodiment of the second aspect of the present invention, the apparatus further includes at least one push plate, and the push plate is connected with the slide through a slide pressing bar.

As an alternative, in the second aspect of the present invention, the pushing plate is provided with a button machine assembly, the button machine assembly includes a button machine box connected to the pushing plate, and a first button machine member and a second button machine member respectively connected to the button machine box, the first button machine member is connected to the bottom plate, and the second button machine member is connected to the front template.

As an optional implementation manner, in an embodiment of the second aspect of the present invention, the heat flow splitter plate is disposed between the panel and the front mold plate, at least one heat flow cavity is disposed in the heat flow splitter plate, and the heat flow cavity is fixedly connected to the plurality of heat flow pipes.

As an alternative, in the second aspect of the invention, the push plate is provided with a plurality of guides for guiding the front mold plate, the heat flux splitter plate and the face plate.

In summary, the ejector pin imprint-free demolding structure and the elbow mold provided by the invention have the following technical effects:

According to the elbow mould provided by the invention, the demoulding structure without the thimble marks is adopted, the front mould core is connected on the front mould plate, the rear mould core is connected on the bottom plate, the stop block is arranged between the bottom plate and the front mould plate, so that the demoulding of an injection product without the thimble marks is realized, and the water gap is arranged on the pipe orifice surface of the elbow, so that the attractiveness of the elbow pipe body is not influenced.

Other advantageous effects of the present invention will be exhibited in the detailed description.

Drawings

FIG. 1 is a side view of the elbow mold of the present invention;

FIG. 2 is a schematic sectional view of the elbow mold of the present invention;

fig. 3 is a schematic view of the internal structure of the elbow mold of the present invention.

Wherein the reference numerals have the following meanings:

1. a panel; 2. a heat flux manifold; 21. a hot flow chamber; 22. a heat flow conduit; 3. a front template; 4. pushing the plate; 41. a guide member; 42. a slide layering; 5. a base plate; 6. a demolding structure; 61. a rear mold core; 62. a front mold core; 621. a front core insert; 63. a core assembly; 631. a slide core; 632. a row bit; 633. a stopper; 634. a connecting member; 7. an inclined guide post; 71. pressing blocks of the inclined guide pillars; 8. a cavity; 9. a sear assembly; 91. a buckle box; 92. a first fastening member; 93. a second fastening member.

Detailed Description

For better understanding and implementation, 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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1-3, the invention discloses an elbow die, which comprises a panel 1, a heat flow splitter plate 2, a front die plate 3, a push plate 4, a bottom plate 5 and at least one group of demoulding structures 6 without thimble marks, wherein the demoulding structures are arranged between the front die plate 3 and the bottom plate 5 from top to bottom. The elbow mould realizes that no thimble seal mark and no water gap notch influence the aesthetic property on the surface of a product manufactured by the mould by utilizing the demoulding structure 6 without thimble seal mark.

In some embodiments, two sets of demolding structures 6 are provided in a single elbow mold to improve the yield of a single molding.

The demolding structure 6 includes a rear mold core 61, a front mold core 62 cooperating with the rear mold core 61 to form at least one cavity 8, and a core assembly 63. The core assembly 63 includes at least one slide core 631, a slide 632, and a stop 633, wherein the core end of the slide core 631 is disposed in the cavity 8, the other end of the slide core is connected to the slide 632, the stop 633 is disposed between the rear core 61 and the slide 632, and the slide core 631 passes through the stop. During demolding, after the front mold core 62 is removed, the slide 632 is moved to drive the slide core 631 to move, so that the slide core 631 moves together with the injection molding product until the injection molding product is blocked by the block 633 and separated from the slide core 631, thereby realizing demolding of the injection molding product without a pin mark.

Specifically, the front mold core 62 is connected to the front mold plate 3, the rear mold core 61 is connected to the bottom plate 5, and the stop block 633 is disposed between the bottom plate 5 and the front mold plate 3 and connected to the bottom plate 5.

In some embodiments, the slide 632 is fixedly connected to the slide core 631 by the in-line connector 634, so that during the product demolding process, the movement of the slide 632 will bring the slide core 631 and the product adhered to the slide core 631 to move together until the product is stopped by the stop 633 and completely separated from the slide core 631, and the slide core 631 and the slide 632 will not be separated and left on the product; meanwhile, the slide core 631 can be replaced conveniently when the slide core is defective, and the mold cost is reduced.

Referring to fig. 2, in some embodiments, the front core 62 is connected to at least one front core 621, and the core end of the front core 621 is disposed in the cavity 8 and cooperates with the slide core 631 to form a product core.

The single front mold core 62 may be connected to eight front mold cores 621, and form eight product cores together with the eight slide cores 631, and in combination with the rear mold core 61, a single-unit demolding structure 6 may be molded at one time to obtain eight products.

In some embodiments, at least one heat flow pipe 22 is disposed through the front mold core 62, and the heat flow pipe 22 communicates with the mold cavity 8, so that the nozzle is disposed on the nozzle surface of the elbow after injection molding, and the nozzle notch does not affect the aesthetic property of the elbow pipe body.

In some embodiments, the slide 632 is connected to at least one angle post 7, one end of the angle post 7 is connected to the bottom plate 5, and the other end is connected to an angle post pressing block 71, and the angle post pressing block 71 is connected to the front mold core 62 in a snap-fit manner. In practice, two inclined guide pillars 7 are connected with the slide 632, so that when the inclined guide pillars 7 and the slide 632 are tightly pressed, the slide 632 can be better limited to move in the injection molding process of the mold, the deviation of the cavity 8 is avoided, and the yield of injection molded products is improved.

In some embodiments, the push plate 4 is connected to the row 632 by a row compression bar 42.

In some embodiments, the pusher plate 4 is provided with a button machine assembly 9, the button machine assembly 9 comprises a button machine box 91 connected with the pusher plate 4 and a first button machine member 92 and a second button machine member 93 respectively connected with the button machine box 91, the first button machine member 92 is connected with the bottom plate 5, and the second button machine member 93 is connected with the front template 3. Through detaining quick-witted subassembly 9 with bottom plate 5, push

pedal

4 and 3 fixed connection of front mould board, avoid moulding plastics the in-process and can lead to the dislocation of die cavity 8 because of the impulsive force to lead to producing the defective products, increase the defective rate.

In some embodiments, at least one heat flow cavity 21 is disposed in the heat flow splitter plate 2, and the heat flow cavity 21 is fixedly connected to a plurality of heat flow pipes 22. The hot runner cavity 21 acts as an excess buffer space to facilitate feeding and distribution, improving the single molding throughput of the mold.

In some embodiments, the push plate 4 is provided with a plurality of guide members 41 for guiding the front mold plate 3, the thermal flow splitter plate 2 and the panel 1, so that the front mold plate 3, the thermal flow splitter plate 2 and the panel 1 can be assembled and disassembled accurately, and the reject ratio of products can be reduced.

When the mold is opened, the panel 1, the heat flow distribution plate 2 and the front mold plate 3 are removed in sequence, the inclined guide post pressing block 71 is separated from the clamping of the front mold plate 3, the inclined guide post 7 can move to toggle the slide 632 to move, the slide 632 drives the slide core 631 and a product stuck on the slide core 631 to move, when the product hits the stop block 633, the slide 632 and the slide core 631 continue to move through the toggling of the inclined guide post 7 until the product is clamped by the stop block 633 to be separated from the slide core 631 automatically. In the whole demolding process, a thimble, a top plate or a crochet hook and the like are not needed to contact with a product, and marks cannot be left on the surface of the product to influence the attractiveness of the product.

In summary, according to the demolding structure 6 provided by the present invention, the stop block 633 is disposed between the back mold core 61 and the row core 632, when demolding is performed, after the front mold core 62 is removed, the row core 632 is moved to drive the row core 631 to move, so that the row core 631 moves together with the injection product until the injection product is stopped by the stop block 633 and separated from the row core 631, thereby achieving demolding of the injection product without pin marks, without pin marks left on the surface of the injection product, and improving the aesthetic property of the product. According to the elbow mould provided by the invention, the demoulding structure 6 without the thimble marks is adopted, the front mould core 62 is connected on the front template 3, the rear mould core 61 and the baffle are both connected on the bottom plate 5, so that the demoulding of an injection product without the thimble marks is realized, and the water gap is arranged on the pipe orifice surface of the elbow, so that the attractiveness of the elbow pipe body is not influenced.

The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.

Claims

1. The utility model provides a demoulding structure of no thimble seal of a government organization in old china, its characterized in that includes:

a rear mold core (61);

the front die core (62) and the rear die core (61) are matched with each other to form at least one die cavity (8); and the number of the first and second groups,

the core assembly (63) comprises at least one slide core (631), a slide (632) and a stop block (633), wherein the core end of the slide core (631) is arranged in the cavity (8), the other end of the slide core is connected with the slide (632), the stop block (633) is arranged between the rear core (61) and the slide (632), and the slide core (631) penetrates through the stop block (633).

2. The structure of claim 1, wherein the front core (62) is connected to at least one front core insert (621), and a core end of the front core insert (621) is disposed in the cavity (8) and cooperates with the slide core (631) to form a product core.

3. The demolding structure according to claim 2, wherein at least one heat flow conduit (22) is arranged on the front mold core (62) in a penetrating manner, and the heat flow conduit (22) is communicated with the mold cavity (8).

4. The demolding structure according to any one of claims 1 to 3, wherein the slide (632) is fixedly connected with the slide core (631) by means of an insert connector (634).

5. An elbow mould, characterized in that it comprises a face plate (1), a front template (3), a bottom plate (5) arranged from top to bottom, and at least one set of demoulding structures according to any one of claims 1 to 4 arranged between the front template (3) and the bottom plate (5);

front mould benevolence (62) are connected on front template (3), back mould benevolence (61) are connected on bottom plate (5), dog (633) set up in bottom plate (5) with between front template (3).

6. The bend die of claim 5, wherein the row (632) is connected with at least one angle guide post (7), one end of the angle guide post (7) is connected with the bottom plate (5), the other end is connected with an angle guide post pressing block (71), and the angle guide post pressing block (71) is connected with the front die core (62) in a clamping manner.

7. The bend die of claim 5 or 6, further comprising at least one push plate (4), the push plate (4) being connected to the row (632) by a row bar (42).

8. The bend die of claim 7, wherein a buckle assembly (9) is arranged on the push plate (4), the buckle assembly (9) comprises a buckle case (91) connected with the push plate (4), and a first buckle member (92) and a second buckle member (93) respectively connected with the buckle case (91), the first buckle member (92) is connected with the bottom plate (5), and the second buckle member (93) is connected with the front die plate (3).

9. The elbow die according to claim 8, characterized in that it further comprises a heat flow splitter plate (2) arranged between the face plate (1) and the front die plate (3), at least one heat flow cavity (21) is arranged in the heat flow splitter plate (2), and the heat flow cavity (21) is connected with a plurality of heat flow pipes (22).

10. Elbow mould according to claim 9, characterised in that the push plate (4) is provided with guides (41) for guiding the front mould plate (3), the heat flux splitter plate (2) and the face plate (1).