CN211917593U

CN211917593U - Slide top runner of injection mold

Info

Publication number: CN211917593U
Application number: CN201922456616.0U
Authority: CN
Inventors: 李孔富; 黄金香; 陈佳斌
Original assignee: Datamatic Guangzhou Injection Mould Co ltd
Current assignee: Datamatic Guangzhou Injection Mould Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-11-13
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a slide top runner of an injection mold, which belongs to a plastic mold structure, a slide block in a main runner of the injection mold is provided with a buckling block as the part of the inner wall surface of the runner in a protruding way, the buckling block extends towards the inner part of the main runner from one end close to the inner wall surface of the main runner, and a buckling gap is formed between the buckling block and the inner wall surface of the main runner, after the main runner is injected with glue, the glue fills the buckling gap to form a buckle head for pulling and buckling the sprue gate material in the main runner in the mold opening process, when the mold is opened and the mold is removed, the moving mold side or the motion characteristic of the slide block is utilized, the glue material buckle head in the main runner can be buckled and pulled in the gap when the moving mold side or the slide block moves relative to the fixed mold side, so that the glue material in the main runner is communicated with an injection molding piece in a main cavity to stay at the moving mold side together, the problem of gluing the fixed mold side is avoided, and satisfy the design scheme that advances to glue on the slider upper surface, simplified mould overall structure, reduced the processing cost of mould.

Description

Slide top runner of injection mold

Technical Field

The utility model relates to an injection mold structure especially relates to an injection mold's capable position top runner.

Background

Injection molding is a method for producing and molding industrial products. The plastic mold used in the injection molding process is a tool which is matched with a plastic molding machine in the plastic processing industry and gives a complete configuration and accurate dimension to a plastic product. Because of the variety and processing method of plastic, and the structure of plastic molding machines and plastic products are various, the variety and structure of plastic molds are also various.

In the conventional design, a glue inlet position is usually designed on the geometric center of an injection molding part or the center line edge of the injection molding part, but the surface structure of the geometric center or the center line edge of part of the injection molding part is complex, and a slide block needs to be designed for core pulling during mold design.

In general mold design, get the piece for the ejecting drawing of patterns of injection molding for being convenient for, injection molding and sprue can design to stop in the movable mould side after the mould die sinking, the sprue generally designs for circular or trapezoidal, because of its packing power to the die cavity is little, easily the drawing of patterns, in order to stay the sprue in the same one side of injection molding, can set up the runner and draw the material pole, but when runner below has designed the slider, draw the material pole to need to pass the slider, for realizing the smooth drawing of patterns of injection molding, will make mould mechanism more complicated, greatly increased plastic mold's design cost and processing cost.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an injection mold's slide top runner sets up the knot position piece that is used for drawing and detains the sizing material on the sprue, has simplified mould overall structure, reduces design and processing cost.

The purpose of the utility model is realized by adopting the following technical scheme:

a slide top runner of an injection mold comprises a fixed mold side and a movable mold side which are oppositely arranged and can be matched with each other to form a glue injection runner and a product cavity, wherein the movable mold side can reciprocate in the direction close to and far away from the fixed mold side so as to be matched with each other to form a mold closing state or separated from each other to form a mold opening state; the movable mold side is provided with a slide block which can slide on the movable mold side in a reciprocating manner so as to switch a mold closing state and a mold opening state, and the glue injection runner comprises a main runner arranged on the slide block and an auxiliary runner arranged on the fixed mold side; the product cavity comprises a main cavity and an auxiliary cavity, the main cavity is arranged on the movable mould side and communicated with the main runner, and the auxiliary cavity is arranged on the fixed mould side and communicated with the auxiliary runner; a glue inlet channel is arranged in the fixed die side, one end of the glue inlet channel is communicated with the auxiliary channel to form a glue injection port, and the other end of the glue inlet channel is communicated with the outside of the movable die side to form a glue inlet for dry butt joint with external injection molding; the main runner is convexly provided with a buckling block, the buckling block extends towards the inside of the main runner from one end close to the inner wall surface of the main runner, a buckling gap is formed between the buckling block and the inner wall surface of the main runner, and after the main runner is subjected to glue injection, the rubber material fills the buckling gap to form a buckle head for pulling and buckling the sprue material in the main runner in the mould opening process.

Further, the main flow channel comprises a flow channel bottom wall and flow channel side walls arranged on two opposite sides of the flow channel bottom wall; the buckling block is arranged on the bottom wall of the flow channel.

Furthermore, the glue injection port and the buckling block are respectively and oppositely arranged on the upper side and the lower side of the glue injection runner.

Further, a glue injection end is formed at one end, close to the product cavity, of the main runner, and a glue inlet end is formed at one end, close to the glue injection port, of the main runner; detain position piece one end set up in advance gluey end, detain the other end of position piece and towards the direction of injecting glue end extends and forms and detain the position end.

Furthermore, the buckling end is of an arc structure.

Furthermore, a connecting part for connecting the buckling block and the main flow channel is arranged between the buckling block and the main flow channel; the connecting part is of an arc structure, so that the gap is formed between the buckling block and the main runner, and the buckling end is connected with the connecting part.

Furthermore, the width of the buckling end and the width of the connecting part are both smaller than the width between the two side walls of the flow channel.

Furthermore, the glue injection runner and the buckling block are inclined towards the direction far away from the fixed mold side in the direction from the glue inlet end to the glue injection end; the inclination angle of the buckling block relative to the horizontal plane is smaller than that of the glue injection runner relative to the horizontal plane.

Further, a movable die plate is arranged on the movable die side, and the main cavity is arranged between the sliding block and the movable die plate.

Furthermore, a hot runner insert and a fixed die inner die are arranged on the fixed die side, the auxiliary runner is arranged between the hot runner insert and the fixed die inner die, and the auxiliary cavity is arranged on the fixed die inner die.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the main runner of the slide top runner of the injection mold is provided with a buckling block in a protruding mode as a part of the inner wall surface of the runner, the buckling block extends towards the inside of the main runner from one end, close to the inner wall surface of the main runner, and forms a buckling gap with the inner wall surface of the main runner.

When the die sinking drawing of patterns, utilize the motion characteristic of movable mould side or slider, the sizing material that is arranged in the sprue detains the head, when movable mould side or the relative decide mould side displacement of slider, the discount can be detained and is drawn in the middle of the clearance, make the injection molding that is arranged in the sizing material intercommunication main cavity in the sprue together remain in the movable mould side, the problem that the sizing material glues the decide mould side has been avoided, the structure of drawing the material pole is saved simultaneously, and satisfy the design that advances to glue on the slider upper surface, mould overall structure has been simplified, the processing cost of mould has been reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of a slide top runner of the injection mold of the present invention;

FIG. 2 is an enlarged view of section A of FIG. 1;

FIG. 3 is a schematic view of the side structure of the mold of the present invention;

FIG. 4 is a schematic side view of the movable mold of the present invention;

fig. 5 is one of the structural schematic diagrams of the nozzle material of the present invention;

fig. 6 is a second schematic view of the nozzle material structure of the present invention.

In the figure: 10. a fixed mold side; 11. a glue inlet channel; 111. a glue injection port; 112. a glue inlet; 12. a hot runner insert; 13. fixing the die inner die; 20. moving the mold side; 21. a slider; 30. injecting glue runner; 31. a main flow channel; 311. a bottom wall of the flow channel; 312. a glue injection end; 313. a glue inlet end; 32. a secondary flow passage; 33. buckling a position block; 331. a buckling gap; 332. buckling a position end socket; 333. a connecting portion; 40. a product cavity; 41. a main cavity; 42. a secondary cavity; 50. a water gap material; 51. buckling a head; 60. and (5) injection molding.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1-4, it is comparatively complicated to some moulds movable mould side 20 die cavity structures, leads to the plastic mold structure under the condition that should not set up injecting glue runner 30 at movable mould side 20, the utility model discloses an injection mold's slide top runner, its mould overall structure part is unanimous basically with prior art's mould structure, including relative setting and can match each other and form the cover half side 10 and the movable mould side 20 of injecting glue runner 30 and product die cavity 40, movable mould side 20 can be close to and keep away from the direction reciprocating motion of cover half side 10 to mutually support and form the compound die state or the looks separation and form the die sinking state.

Wherein, the movable mould side 20 is provided with the slider 21 that can slide on the movable mould side 20 in order to switch the compound die state and the die sinking state in a reciprocating manner, injecting glue runner 30 is including setting up the sprue 31 at slider 21 and setting up the side runner 32 in the stationary mould side 10, generally speaking, for the ejecting drawing of patterns of injection molding spare to be convenient for, injection molding spare and sprue need design to stop in the movable mould side after the mould is opened, the sprue generally designs for circular or trapezoidal, because its packing power to the die cavity is little, easily the drawing of patterns, if the sprue part does not design the material pole, mouth of a river material 50 has very big risk to glue in the middle of stationary mould side 10 during the die sinking. In particular, the depth of the secondary runner 32 is slightly larger than that of the primary runner 31 in this embodiment, which may cause the gate material 50 in the filling runner 30 to easily stick to the molding side 10 during mold opening.

The product cavity 40 comprises a main cavity 41 and an auxiliary cavity 42, the main cavity 41 is arranged on the movable mold side 20 and communicated with the main runner 31, the auxiliary cavity 42 is arranged on the fixed mold side 10 and communicated with the auxiliary runner 32, during the glue injection process, the glue enters the glue injection runner 30 formed by the main runner 31 and the auxiliary runner 32 in a surrounding mode and is injected into the product cavity 40 formed by the main cavity 41 and the auxiliary cavity 42 in a surrounding mode through the glue injection runner 30, and finally the glue forms the injection molding piece 60 in the product cavity 40.

The utility model discloses it is comparatively complicated that it is located the main cavity 41 structure of movable mould side 20 that it is main to be directed against, theoretical best advances gluey mouthful 52 position below must set up slider 21 when loosing core, should not set up the improvement of making under the condition of drawing the material pole, of course, also can adopt in the middle of the plastic mold under the general condition, 20 unsuitable setting glue injection mouth 111's the condition in the movable mould side under, it sets up in cover half side 10 to advance gluey passageway 11, advance gluey passageway 11 one end intercommunication auxiliary runner 32 and form glue injection mouth 111, the other end of advancing gluey passageway 11 with movable mould side 20 outside intercommunication and form be used for with the outside advance gluey mouth 112 of doing the butt joint of moulding plastics.

In order to avoid the gate material 50 sticking to the fixed mold side 10 during mold opening and finally difficult mold opening, the slide block in the main flow channel 31 is provided with a catching block 33 as the inner wall surface of the flow channel, the catching block 33 extends from one end close to the inner wall surface of the main flow channel 31 toward the inside of the main flow channel 31 and forms a catching gap 331 with the inner wall surface of the main flow channel 31, after the main flow channel 31 is filled with the gate material, the rubber material fills the catching gap 331 to form a buckle 51 for pulling the gate material 50 in the main flow channel 31 into the main flow channel 31 during mold opening, in this example, the movable mold side 20 is further provided with the slide block 21, due to the motion characteristic of the slide block 21, the plastic mold of the conventional structure is more difficult to perform mold opening under the condition that the main cavity 41 of the movable mold side 20 is complicated, and after the catching block 33 is provided, when the movable mold side 20 or the slide block 21 performs relative movement filling with respect to the, the glue stock in the main runner 31 can enter the buckling gap 331 to form a buckle head 51 which is in the buckling gap 331, the gate material 50 in the main runner 31 is in the side of the movable mould side 20 in a pulling and buckling mode, the condition that the glue stock is adhered to the fixed mould side 10 is avoided, a material pulling rod is also avoided, the integral structure of the mould is simplified, and the design and production cost is reduced.

As a specific embodiment of the above scheme, the main flow channel 31 includes a flow channel bottom wall 311 and flow channel side walls disposed on two opposite sides of the flow channel bottom wall 311; the catching block 33 is disposed on the bottom wall 311 of the runner, the filling opening 111 and the catching block 33 are disposed on the upper and lower sides of the filling runner 30, respectively, so that when the movable mold side 20 or the slide block 21 moves and displaces relative to the fixed mold side 10, the catching block 33 can provide a pulling force opposite to the filling opening 111 for the nozzle material 50 in the main runner 31, so that the nozzle material 50 can be retained in the main runner 31 and the main cavity 41.

As shown in fig. 5-6, more specifically, a glue injection end 312 is formed at one end of the main flow channel 31 close to the product cavity 40, and a glue inlet end 313 is formed at one end of the main flow channel 31 close to the glue injection port 111; one end of the fastening block 33 is disposed at the glue inlet end 313, and the other end of the fastening block 33 extends toward the glue injection end 312 to form a fastening end 332.

In order to facilitate demoulding of the rubber material, the buckling end 332 is of an arc structure, so that the rubber material is prevented from remaining in the buckling gap 331.

A connecting part 333 for connecting the fastening block 33 and the main runner 31 is arranged between the fastening block 33 and the main runner 31, similarly, in order to facilitate the demolding of the rubber compound in the fastening gap 331, the connecting part 333 is in an arc structure so as to form a gap between the fastening block 33 and the main runner 31, and the fastening end 332 is connected with the connecting part 333, in this example, the fastening block 33 is inclined downwards from one end of the fastening end 332 to one end of the connecting part 333.

Furthermore, in order to avoid the sticking of the fastening head 51 in the main flow channel 31 during demolding, the widths of the fastening end 332 and the connecting part 333 are both smaller than the width between the two flow channel side walls, so that the overall width of the fastening head 51 is smaller than that of the main flow channel 31, and the overall stripping is facilitated.

The glue injection runner 30 and the clamping block 33 are both inclined towards the direction far away from the molding side 10 in the direction from the glue inlet end 313 to the glue injection end 312, in the above technical solution, the clamping block 33 is inclined downwards from one end of the clamping end 332 to one end of the connecting part 333, so that the part of the clamping head 51 forms a triangle-like shape, the clamping force of the clamping head 51 on the clamping block 33 during mold opening is stronger, more specifically, the inclination angle of the clamping block 33 relative to the horizontal plane is smaller than that of the glue injection runner 30, and the inclination angle of the clamping block 33 referred to herein is the inclination angle of one side of the clamping block 33 close to the glue injection port 111.

In this embodiment, the movable mold side 20 is provided with a slide block 21 and a movable mold plate (not shown), the main runner 31 is provided on the slide block 21, and the main cavity 41 is provided between the slide block 21 and the movable mold plate.

The fixed mold side 10 is provided with a hot runner insert 12 and a fixed mold inner mold 13, the auxiliary runner 32 is arranged between the hot runner insert 12 and the fixed mold inner mold 13, and the auxiliary cavity 42 is arranged on the fixed mold inner mold 13.

Through implementing above-mentioned technical scheme, can be for the best of movable mould side 20 advance gluey mouthful 52 position below must set up slider 21 and loose the core, should not set up the mouth of a river and draw the plastic mold of material pole to provide simpler structure, can draw the knot with mouth of a river material 50 when the die sinking to be located in the middle of sprue 31 simultaneously, reduce the cost of mould design, production.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A slide top runner of an injection mold comprises a fixed mold side and a movable mold side which are oppositely arranged and can be matched with each other to form a glue injection runner and a product cavity, wherein the movable mold side can reciprocate in the direction close to and far away from the fixed mold side so as to be matched with each other to form a mold closing state or separated from each other to form a mold opening state; the method is characterized in that:

the movable mold side is provided with a slide block which can slide on the movable mold side in a reciprocating manner so as to switch a mold closing state and a mold opening state, and the glue injection runner comprises a main runner arranged on the slide block and an auxiliary runner arranged on the fixed mold side;

the product cavity comprises a main cavity and an auxiliary cavity, the main cavity is arranged on the movable mould side and communicated with the main runner, and the auxiliary cavity is arranged on the fixed mould side and communicated with the auxiliary runner;

a glue inlet channel is arranged in the fixed die side, one end of the glue inlet channel is communicated with the auxiliary channel to form a glue injection port, and the other end of the glue inlet channel is communicated with the outside of the movable die side to form a glue inlet for dry butt joint with external injection molding;

the main runner is convexly provided with a buckling block, the buckling block extends towards the inside of the main runner from one end close to the inner wall surface of the main runner, a buckling gap is formed between the buckling block and the inner wall surface of the main runner, and after the main runner is subjected to glue injection, the rubber material fills the buckling gap to form a buckle head for pulling and buckling the sprue material in the main runner in the mould opening process.

2. The row top runner for an injection mold of claim 1, wherein: the main flow channel comprises a flow channel bottom wall and flow channel side walls arranged on two opposite sides of the flow channel bottom wall;

the buckling block is arranged on the bottom wall of the flow channel.

3. The overhead runner of an injection mold of claim 2, wherein: the glue injection port and the buckling block are respectively and oppositely arranged on the upper side and the lower side of the glue injection runner.

4. The overhead runner of an injection mold of claim 2, wherein: one end of the main runner, which is close to the product cavity, forms a glue injection end, and one end of the main runner, which is close to the glue injection port, forms a glue inlet end;

detain position piece one end set up in advance gluey end, detain the other end of position piece and towards the direction of injecting glue end extends and forms and detain the position end.

5. The row top runner for an injection mold of claim 4, wherein: the buckling position end is of an arc structure.

6. The row top runner for an injection mold of claim 5, wherein: a connecting part for connecting the buckling block and the main flow channel is arranged between the buckling block and the main flow channel;

the connecting part is of an arc structure, so that the gap is formed between the buckling block and the main runner, and the buckling end is connected with the connecting part.

7. The row top runner for an injection mold of claim 6, wherein: the width of the buckling position end and the width of the connecting part are both smaller than the width between the two flow channel side walls.

8. The row top runner for an injection mold of claim 5, wherein: the glue injection runner and the buckling block are inclined towards the direction far away from the fixed mold side in the direction from the glue inlet end to the glue injection end;

the inclination angle of the buckling block relative to the horizontal plane is smaller than that of the glue injection runner relative to the horizontal plane.

9. The row top runner for an injection mold of any of claims 1-8, wherein: and a movable mould plate is arranged on the movable mould side, and the main cavity is arranged between the sliding block and the movable mould plate.

10. The row top runner for an injection mold of any of claims 1-8, wherein: the hot runner mold comprises a fixed mold and is characterized in that a hot runner insert and a fixed mold inner mold are arranged on the fixed mold side, an auxiliary runner is arranged between the hot runner insert and the fixed mold inner mold, and an auxiliary cavity is arranged on the fixed mold inner mold.