In-mold separation mold for edge gate

Abstract

Two pieces of square iron are oppositely arranged on a bottom plate, a lower die is arranged on the two pieces of square iron, an upper die is arranged on the lower die, a top plate is arranged on the upper die, a front cavity and a rear cavity are formed between the upper die and the lower die, and a glue inlet runner is formed between the front cavity and the rear cavity. The glue inlet runner is communicated with an injection molding opening in the top plate and is communicated with the front cavity and the rear cavity through a plurality of glue inlet side openings, the first upper ejector plate, the second upper ejector plate and the lower ejector plate are movably arranged between the two pieces of square iron from top to bottom, and a movable gap is reserved between the second upper ejector plate and the lower ejector plate; a plurality of flat ejector pins penetrating through the second upper ejector plate and the first upper ejector plate are vertically arranged at the positions, corresponding to the multiple glue inlet side openings, of the lower ejector plate, inclined knife edges are formed in the top ends of the flat ejector pins, and a plurality of ejector rods penetrating through the first upper ejector plate are vertically arranged at the positions, corresponding to the front-back cavity and the glue inlet runner, of the second upper ejector plate. The utility model has the advantages of simple structure and low processing cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely relates to a big water gap mould separates mould. BACKGROUND

[0002] For the relatively thin injection product only can adopt big water gap side glue way, product is relatively thin and runner is relatively thick and is not the same to shrink and can cause product deformation, so product needs to separate from water gap before opening mould, present solution is to adopt the installation professional mould cutting device on the mould, its defects are as follows:

[0003] 1, professional mould cutting device requires larger space, under the condition of narrow space, cannot increase professional mould cutting device to solve the problem;

[0004] 2, installation professional mould cutting device position increases the runner and lengthens, causes glue raw material waste to increase production cost, mould also becomes larger and requires injection molding machine platform to also become large and can increase platform cost;

[0005] 3, professional mould cutting device cost is high, and platform also needs to increase external control equipment, and cost is increased. UTILITY MODEL CONTENTS

[0006] The utility model aims at overcoming the prior art's insufficient, provides a big water gap mould separates mould.

[0007] The utility model discloses a technical scheme as follows:

[0008] A big water gap mould separates mould, including bottom plate, lower ejector plate, first upper ejector plate, second upper ejector plate, square iron, lower mould, upper mould and top plate, the square iron is equipped with two blocks and is opposite and set up on the bottom plate, the lower mould is set up on two square irons, the upper mould is set up on the lower mould, the top plate is set up on the upper mould, the upper mould and the lower mould form front and back cavities between, the front and back cavities form glue inlet runner between, the glue inlet runner is communicated with the injection port on the top plate, and is communicated with the front and back cavities through a plurality of glue inlet side ports, the first upper ejector plate, the second upper ejector plate and the lower ejector plate are movably arranged between two square irons from top to bottom, and the second upper ejector plate and the lower ejector plate leave movable gap, a plurality of flat ejector pins are vertically arranged on the lower ejector plate and pass through the second upper ejector plate and the first upper ejector plate, the top end of the flat ejector pin is provided with an inclined cutting edge, a plurality of top rods are vertically arranged on the second upper ejector plate and pass through the first upper ejector plate, and the top rods correspond to the front and back cavities and the glue inlet runner.

[0009] Further, the square iron and the bottom plate are fixed by bolts, the lower die and the square iron are fixed by bolts, the top plate and the upper die are fixed by bolts, and the upper die is movably connected with the guide column on the lower die through the guide sleeve in the upper die.

[0010] Further, the first upper pin plate, the second upper pin plate and the lower pin plate are positioned by the two-stage support head, the upper part of the two-stage support head passes through the second upper pin plate, the first upper pin plate and the lower die, the lower part of the two-stage support head is larger than the upper part, and the lower part of the two-stage support head supports the second upper pin plate and the first upper pin plate and abuts against the bottom plate through the lower pin plate.

[0011] Further, the first spring is elastically arranged between the lower pin plate and the second upper pin plate.

[0012] Further, the limiting block is arranged on the lower pin plate, and an active gap of 0.25mm is left between the limiting block and the second upper pin plate.

[0013] Further, the second spring is elastically arranged between the lower die and the first upper pin plate.

[0014] Compared with the prior art, the beneficial effects of the large-water-port in-mold separation mold provided by the utility model lie in that the thin product can be separated from the water port before mold opening, without the need of additionally increasing in-mold cutting devices and external control equipment of the machine, and only the ejection force of the machine can realize the separation of the water port and the product before mold opening, compared with the traditional in-mold cutting device, the utility model has the advantages of simple structure, low processing cost, no need of increasing the mold position for avoiding the in-mold cutting cylinder, and no environmental pollution problem of the cylinder in the clean room, thereby saving the cycle and cost of the product, and maximizing the added value of the product. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0016] Fig. 1 The utility model provides a kind of large-water-port in-mold separation mold's three-dimensional structure diagram;

[0017] Fig. 2 The utility model provides a kind of large-water-port in-mold separation mold's internal structure diagram;

[0018] Fig. 3The upper view of the lower mold. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will make further detailed description to the utility model combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0020] In order to explain the technical scheme described in the utility model, the following will be explained through specific examples.

[0021] Embodiment

[0022] Please refer to Figs. 1-3 The embodiment provides a large water gap mold separation mold, including bottom plate 1, lower ejector plate 2, first upper ejector plate 3, second upper ejector plate 4, square iron 5, lower mold 6, upper mold 7 and top plate 8. Wherein, square iron 5 is provided with two blocks and is opposite and is set on bottom plate 1 through bolt fixing, lower mold 6 is set on two square irons 5 through bolt fixing, upper mold 7 is set on lower mold 6, upper mold 7 is movably connected with guide column 61 located on lower mold 6 through guide sleeve located in upper mold 7, top plate 8 is set on upper mold 7 through bolt fixing, and front and rear cavities 9 are formed between upper mold 7 and lower mold 6, glue inlet runner 10 is formed between front and rear cavities 9, glue inlet runner 10 is communicated with injection port 81 on top plate 8, and is communicated with front and rear cavities 9 through a plurality of glue inlet side openings 11, first upper ejector plate 3, second upper ejector plate 4 and lower ejector plate 2 are movably arranged between two square irons 5 from top to bottom, first upper ejector plate 3, second upper ejector plate 4 and lower ejector plate 2 are positioned through double-stage support head 12, the upper part of double-stage support head 12 passes through second upper ejector plate 4 and first upper ejector plate 3 and is in contact with lower mold 6, the lower part of double-stage support head 12 is larger than the upper part, the lower part of double-stage support head 12 supports second upper ejector plate 4 and first upper ejector plate 3 and passes through lower ejector plate 2 and is in contact with bottom plate 1, first spring 13 is elastically arranged between lower ejector plate 2 and second upper ejector plate 4, limiting block 21 is arranged on lower ejector plate 2, and there is 0.25mm movement gap 14 between limiting block 21 and second upper ejector plate 4, second spring 15 is elastically arranged between lower mold 6 and first upper ejector plate 3, a plurality of flat ejector pins 15 passing through second upper ejector plate 4 and first upper ejector plate 3 are vertically arranged on lower ejector plate 2 at positions corresponding to a plurality of glue inlet side openings 11, the top end of flat ejector pin 15 is provided with an inclined cutting edge, and a plurality of top rods 16 passing through first upper ejector plate 3 are vertically arranged on second upper ejector plate 4 at positions corresponding to front and rear cavities 9 and glue inlet runner 10.

[0023] The large gate mold inner separation mold perfectly solves the purpose of separating the gate and the product before the mold is opened, does not need to additionally increase the mold inner cutting device and the external control equipment of the machine, and only needs the ejection force of the machine to realize the separation of the gate and the product before the mold is opened. First, the flat ejector pin 15 on the lower ejector plate 2 is lifted by the ejection force of the machine before the product is kept pressure and the glue runner is solidified (the mold does not need to be opened), the gate side opening 11 connected with the product is separated from the glue runner 10 through the inclined cutting edge on the top end, then the second upper ejector plate 4 and the first upper ejector plate 3 are lifted at the same time, so that the product and the glue body of the runner are ejected through the ejector rod, and the purpose of separating the gate and the product before the mold is opened is achieved.

[0024] Compared with the traditional mold inner cutting device, the large gate mold inner separation mold has the advantages of simple structure, low processing cost, no need to increase the mold position to avoid the mold inner cutting oil cylinder, no environmental pollution problem of the oil cylinder in the dust-free workshop, product cycle and cost saving, and maximization of product added value.

[0025] The above is only a preferred embodiment of the utility model, and is not used for limiting the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A large gate in-mold stripping die characterized by: The utility model relates to a injection mould, including bottom plate, lower ejector plate, first upper ejector plate, second upper eject plate, square iron, lower mould, upper mould and top plate, the square iron is equipped with two and opposite setting on the bottom plate, the lower mould is set on two square irons, the upper mould is set on the lower mould, the top plate is set on the upper mould, the upper mould is formed with front and rear cavities between the lower mould, the front and rear cavities are formed with glue runner between, the glue runner is communicated with injection port on the top plate, and is communicated with the front and rear cavities through a plurality of glue side ports, the first upper ejector plate, second upper ejector plate, lower ejector plate are set between two square irons from top to bottom, and the second upper ejector plate and lower ejector plate are left with movable gap, the lower ejector plate is vertically provided with a plurality of flat ejector pins that pass through the second upper ejector plate and the first upper ejector plate in the position corresponding to the a plurality of glue side ports, the top end of flat ejector pin is equipped with bevel, the second upper ejector plate is vertically provided with a plurality of ejector rods that pass through the first upper ejector plate in the position corresponding to the front and rear cavities and glue runner.

2. An in-mold stripping die for a large nozzle according to claim 1, characterized in that: The square iron and bottom plate are fixed through bolt, the lower mould and square iron are fixed through bolt, the top plate and upper mould are fixed through bolt, the upper mould is movably connected through the guide sleeve in the upper mould and the guide column on the lower mould.

3. An in-mold stripping die for a large nozzle according to claim 1, characterized in that: The first upper ejector plate, second upper ejector plate and lower ejector plate are positioned through double-stage support head, the upper part of double-stage support head passes through the second upper ejector plate and the first upper ejector plate and is in contact with the lower mould, the lower part of double-stage support head is larger than the upper part, the lower part of double-stage support head supports the second upper ejector plate and the first upper ejector plate and passes through the lower ejector plate and is in contact with the bottom plate.

4. An in-mold stripping die for a large nozzle according to claim 3, characterized in that: The first spring is elastically arranged between the lower ejector plate and the second upper ejector plate.

5. An in-mold stripping die for a large nozzle according to claim 4, wherein: The lower ejector plate is provided with a limiting block, and a movable gap of 0.25mm is left between the limiting block and the second upper ejector plate.

6. An in-mold stripping die for a large nozzle according to claim 1, characterized in that: The second spring is elastically arranged between the lower ejector plate and the first upper ejector plate.

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