CN210174110U - Anti-splashing mechanism of injection mold - Google Patents

Abstract

The utility model relates to an injection mold prevents mechanism that splashes, including fixed mold core, movable mold core and guide post, guide post one end is fixed mold core, the motion intermittent type nature of other end follow-up mold core insert in the movable mold core, the movable mold core includes product thimble hole, product groove, mold insert hole, mold insert and runner thimble, the thimble hole is "one" font evenly distributed and is in on the movable mold core, the thimble hole end with the product groove contact, the mold insert hole is located the movable mold core is close to middle position, the mold insert is located the mold insert is downthehole, the runner thimble is located in the mold insert, the mold insert end is equipped with prevents the hole that splashes, the hole that splashes with the contact of runner thimble. The utility model discloses an overcome the mould at the technical problem that forced drawing of patterns in-process stub bar bow plays the bullet and flies, the stub bar can't drop the setting position, reduced the artifical process of collecting the stub bar, both reduced the potential safety hazard that the stub bar splashes and brings, saved the manpower again.

Description

Anti-splashing mechanism of injection mold

Technical Field

The utility model relates to an injection mold prevents mechanism that splashes.

Background

An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

In order to solve the problem of manpower waste caused by manually removing a product stub bar in the current injection molding industry, a hidden gate mode is adopted to realize automatic cutting of the product stub bar in the demolding process during mold design. However, due to the specific form of the gate, a forced demolding process is performed in the demolding direction, so that the stub bar is arched and bounced in the process, the stub bar cannot be controlled to fall into a set range, the bounced stub bar can hurt operators, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In view of the shortcoming of above prior art, the utility model aims to provide an injection mold prevents mechanism that splashes, this mechanism prevents splashing hole and mold insert through setting up, has effectively avoided splashing of stub bar, makes the stub bar drop assigned position.

In order to achieve the above and other related objects, the present invention provides an anti-splashing mechanism for an injection mold, comprising a fixed mold core, a movable mold core and a guide post, wherein one end of the guide post is fixed on the fixed mold core, the other end of the guide post is intermittently inserted into the movable mold core, the guide post is used for assisting the movable mold core and the fixed mold core to close, the movable mold core comprises a product thimble hole, a product groove, a mold insert hole, a mold insert and a sprue thimble, the thimble hole is uniformly distributed on the movable mold core in a shape like a Chinese character 'yi', the thimble hole is used for allowing the thimble to pass through, so that the thimble can conveniently eject the product, the tail end of the thimble hole is in contact with the product groove, the product groove is used for fixing the shape of the product, so as to facilitate injection molding the product with a designated shape, the mold insert hole is located at a position close to the, the automatic feeding device comprises an insert, a sprue thimble, a sprue ejector pin, a sprue ejector pin and a mold insert, wherein the insert hole is used for placing the insert, the insert is located in the insert hole, the mold insert is used for preventing a stub bar from splashing, the sprue ejector pin is used for pushing the stub bar to move forwards and fall off, the tail end of the insert is provided with a splashing-preventing hole, the splashing-preventing hole is in contact with the sprue ejector pin, and the splashing.

Preferably, the anti-splashing hole is in a reverse taper shape, so that the stub bar is prevented from slipping off the insert.

Preferably, one end of the insert, which is far away from the splash-proof hole, is provided with an anti-drop lug, the anti-drop lug is connected with the insert, and the anti-drop lug is used for limiting the movement distance of the insert.

Preferably, the insert hole comprises a limiting groove, the limiting groove is located at one end, far away from the splash-proof hole, of the insert hole, and the limiting groove is matched with the anti-falling lug and used for limiting the movement distance of the insert.

Preferably, still include the runner, the runner both ends respectively with the product groove is connected, runner one side with the cover half core is connected, the other end with the movable mould core is connected, the runner is convenient for the liquid of moulding plastics to flow into the product groove.

Preferably, the fixed mold core comprises a runner port system, the runner port system is in contact with the runner, and the runner port system is used for controlling the time and the volume of the injection molding liquid entering the runner.

Preferably, the depth of the limiting groove is 3-5 times of the thickness of the anti-falling lug, and the limiting groove is used for limiting the buffer distance of the stub bar.

After the equipment finishes the die sinking by injection molding, a product thimble moves in a product thimble hole to eject out a product and a stub bar, the anti-splashing hole clamps the stub bar by using a self inverted cone structure, the arching elasticity generated by gate forced demolding is overcome, the stub bar is fixed on the insert, the insert is caused to move in the insert hole along with the stub bar, the anti-dropping ear limits the movement distance of the insert main body, the gate forced demolding is realized by the gate in the process, the product and the stub bar are cut off and separated, and finally the stub bar drops at a specified position.

To sum up, this utility model's an injection mold prevents mechanism that splashes has following beneficial effect: the original equipment is slightly changed, the insert is added at the original cold material well position, and a die does not need to be additionally designed, so that the manufacturing cost of an enterprise is reduced; the movement distance of the insert is greater than the distance of the stub bar film supporting, the bowing and bouncing movement of the stub bar in the demolding process is effectively buffered, the arrangement of the anti-splashing hole can ensure that the stub bar is firmly fixed by the insert, the stub bar is ensured to move along with the insert, the stub bar is effectively prevented from splashing in the forced demolding process, and the stub bar is ensured to fall off at the designated position; the time of manually collecting the stub bar and cleaning the stub bar is reduced, the acknowledged labor intensity is reduced, and the working efficiency of workers is improved.

Drawings

FIG. 1 is a cross-sectional view of an injection mold splash guard mechanism.

Fig. 2 is a cross-sectional view of an insert.

FIG. 3 is an overall view of an injection mold splash guard mechanism.

1. Fixing a mold core; 2. a movable mold core; 3. a guide post; 4. a flow channel; 5. a thimble hole; 6. a product tank; 7. an insert hole; 8. an insert; 9. a sprue thimble; 11. a runner port system; 71. a limiting groove; 81. anti-splashing holes; 82. preventing lugs from falling off; 83. an insert body.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1 to 3. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

As shown in fig. 1 to 3, the utility model relates to an anti-splashing mechanism for an injection mold, which comprises a fixed mold core 1, a movable mold core 2 and guide posts 3, wherein one end of each guide post 3 is fixed on the fixed mold core 1, the other end of each guide post is intermittently inserted into the movable mold core 2 along with the movement of the movable mold core 2, the guide posts 3 are used for assisting the movable mold core 2 and the fixed mold core 1 to be closed, the movable mold core 2 comprises a product thimble hole 5, a product groove 6, an insert hole 7, an insert 8 and a sprue thimble 9, the thimble holes 5 are uniformly distributed on the movable mold core 2 in a shape like a Chinese character 'yi', the thimble holes 5 are used for allowing the thimbles to pass through, so as to eject products, the tail end of the thimble hole 5 is in contact with the product groove 6, the product groove 6 is used for fixing the shape of the products, so as to facilitate injection molding into products with a designated shape, the insert hole, the position of the insert hole 7 is symmetrical, the insert hole 7 is used for placing the insert 8, the insert 8 is located in the insert hole 7, the insert 8 is used for preventing the stub bar from splashing, the sprue thimble 9 is located in the insert 8, the sprue thimble 9 is used for pushing the stub bar to move forwards and fall off, the tail end of the insert 8 is provided with a splashing prevention hole 81, the splashing prevention hole 81 is in contact with the sprue thimble 9, the splashing prevention hole 81 is used for fixing the stub bar and preventing the stub bar from being separated from the insert 8.

In this embodiment, the anti-spattering hole 81 has a reverse tapered shape to prevent the stub bar from slipping off the insert 8.

In this embodiment, an anti-drop lug 82 is disposed at one end of the insert 8 away from the splash-proof hole 81, the anti-drop lug 82 is connected to an insert main body 83, and the anti-drop lug 82 is used for limiting a movement distance of the insert 8.

In this embodiment, the insert hole 7 includes a limiting groove 71, the limiting groove 71 is located at an end of the insert hole 7 away from the anti-splashing hole 81, and the limiting groove 71 is matched with the anti-dropping lug 82 to limit the moving distance of the insert 8.

In this embodiment, still include runner 4, 4 both ends of runner respectively with product groove 6 is connected, 4 one side of runner with fixed mold core 1 is connected, the other end with movable mold core 2 is connected, runner 4 is convenient for the liquid of moulding plastics and is flowed into product groove 6.

In this embodiment, the fixed mold core 1 includes a runner port system 11, the runner port system 11 is in contact with the runner 4, and the runner port system 11 is used to control the time and volume of the injection molding liquid entering the runner 4.

In this embodiment, the depth of the limiting groove 71 is 3 to 5 times the thickness of the anti-falling lug 82, and is used for limiting the buffer distance of the stub bar.

After the equipment finishes the die sinking by injection molding, a product thimble moves in a product thimble hole 5 to eject out a product and a stub bar, the anti-splashing hole 81 clamps the stub bar by using a self inverted cone structure, the arching elasticity generated by gate forced demolding is overcome, the stub bar is fixed on an insert 8, the insert 8 is caused to move in an insert hole 7 along with the stub bar, an anti-falling lug 82 limits the movement distance of an insert main body 83, the gate forced demolding is realized at the gate in the process, the product and the stub bar are cut off and separated, and finally the stub bar drops at a specified position.

As above, this utility model's an injection mold prevents mechanism that splashes has following beneficial effect: the original equipment is slightly changed, the insert is added at the original cold material well position, and a die does not need to be additionally designed, so that the manufacturing cost of an enterprise is reduced; the movement distance of the insert is greater than the distance of the stub bar film supporting, the bowing and bouncing movement of the stub bar in the demolding process is effectively buffered, the arrangement of the anti-splashing hole can ensure that the stub bar is firmly fixed by the insert, the stub bar is ensured to move along with the insert, the stub bar is effectively prevented from splashing in the forced demolding process, and the stub bar is ensured to fall off at the designated position; the time of manually collecting the stub bar and cleaning the stub bar is reduced, the acknowledged labor intensity is reduced, and the working efficiency of workers is improved. Therefore, the utility model overcomes the defects of the prior art and has high industrial utilization value and practical value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (7)

1. The utility model provides an injection mold prevents mechanism that splashes which characterized in that: the movable mold core comprises a fixed mold core, a movable mold core and guide posts, wherein one end of each guide post is fixed on the fixed mold core, the other end of each guide post is inserted into the movable mold core along with the movement of the movable mold core intermittently, each movable mold core comprises a product thimble hole, a product groove, an insert hole, an insert and a sprue thimble, the thimble holes are uniformly distributed in a shape like a Chinese character 'yi' on the movable mold core, the tail ends of the thimble holes are in contact with the product grooves, the insert holes are located at positions, close to the middle, of the movable mold core, the positions of the insert holes are symmetrical, the inserts are located in the insert holes, the sprue thimbles are located in the inserts, and the tail ends of the inserts are provided with anti-splashing.

2. The injection mold splash prevention mechanism of claim 1, wherein: the anti-splashing hole is in an inverted cone shape.

3. The injection mold splash prevention mechanism of claim 1, wherein: the anti-splashing insert is characterized in that an anti-falling lug is arranged at one end, away from the anti-splashing hole, of the insert, and the anti-falling lug is connected with the insert main body.

4. The injection mold splash prevention mechanism of claim 3, wherein: the insert hole comprises a limiting groove, and the limiting groove is located at one end, far away from the splash-proof hole, of the insert hole.

5. The injection mold splash prevention mechanism of claim 1, wherein: the fixed mold core is connected with the product groove, and the other end of the fixed mold core is connected with the movable mold core.

6. The injection mold splash prevention mechanism of claim 5, wherein: the fixed die core comprises a runner port system, and the runner port system is in contact with the runner.

7. The injection mold splash prevention mechanism of claim 4, wherein: the depth of the limiting groove is 3-5 times of the thickness of the anti-falling lug.

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