CN217454783U

CN217454783U - In-mold gate shearing structure for injection mold

Info

Publication number: CN217454783U
Application number: CN202220101703.3U
Authority: CN
Inventors: 徐黄海
Original assignee: Suzhou Ouchim Precision Machinery Co ltd
Current assignee: Suzhou Ouchim Precision Machinery Co ltd
Priority date: 2022-01-16
Filing date: 2022-01-16
Publication date: 2022-09-20
Anticipated expiration: 2032-01-16

Abstract

The utility model discloses an in-mold gate shearing structure for an injection mold in the field of mold design and manufacture, comprising a bottom plate, a backing plate is fixedly connected to the upper end of the bottom plate, a fixed template is fixedly connected to the upper end of the backing plate, and a guide is fixedly connected to the inside of the fixed template Column, the circumferential surface of the guide column is slidably connected with a movable template, the upper end of the movable template is fixedly connected with a top plate, the fixed template is fixedly connected with a mold core, the fixed template is fixedly connected with a mold core, and the fixed template and the mold core are provided with chute. A shearing device is slidably connected in the groove, the utility model has a simple structure and low production cost, and only needs a simple operation to achieve the shearing effect on the gate.

Description

In-mold gate shearing structure for injection mold

Technical Field

The utility model relates to a mold design makes the field, specifically is a runner shearing mechanism in mould for injection mold.

Background

The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, with different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. The element has the name of "industrial mother".

Traditional mould is when using, and the mould is after moulding plastics, needs to cut the separation with injection molding and runner, and current shearing mode of handling is all cut through artifical use scissors, and probably because of individual reason like this, it is inconsistent to lead to shearing the department to influence the injection molding quality, and efficiency is low excessively, can not satisfy the production demand.

Therefore, the utility model provides an injection mold is with interior runner shearing mechanism to solve current injection mold when going on separating runner and injection molding, generally need go to cut the separation through artifical simple to use, can influence the quality of injection molding like this, moreover the problem of inefficiency excessively.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection mold is with interior runner shearing structure of mould to solve current injection mold and when going on separating runner and injection molding, generally need go to cut the separation through artifical simple to use, can influence the quality of injection molding like this, the problem that efficiency was low excessively moreover.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a structure is cuted to runner in mould for injection mold, includes the bottom plate, bottom plate upper end fixedly connected with backing plate, backing plate upper end fixedly connected with fixed die plate, fixedly connected with guide post in the fixed die plate, guide post periphery sliding connection has the movable mould board, movable mould board upper end fixedly connected with roof, fixedly connected with mould benevolence in the fixed die plate, fixedly connected with mold core in the fixed die plate, the spout has been seted up in fixed die plate and the mould benevolence, sliding connection has shearing mechanism in the spout.

As a further aspect of the present invention: the injection molding machine is characterized in that a thimble passing plate is attached to the upper end of the bottom plate, a thimble is fixedly connected in the thimble passing plate and penetrates through the fixed die plate and the die core, the upper end face of the thimble and the upper end face of the die core are in the same plane, and in operation, after an injection molded part is molded, the injection molding machine drives the thimble to move by pushing the thimble bottom plate, so that the effect of pushing the injection molded part out through the thimble is achieved.

As the utility model discloses further scheme again: the runner and the pouring opening are formed in the lower end face of the mold core, the sprue bushing is fixedly connected in the top plate and communicated with the runner, and molten plastic is injected into the sprue bushing by the injection molding machine during working and then is injected into the mold cavity through the sprue bushing, the runner and the pouring opening, so that the effect of forming injection molding parts is achieved.

As the utility model discloses further scheme again: the shearing device comprises a cutting knife, a connecting block, a cutting groove, an oil cylinder, an installing block, a gear, a first rack and a second rack, the installing block and the connecting block are connected in the sliding groove in a sliding manner, the gear is connected in the installing block in a rotating manner, the first rack is meshed with the gear, the first rack is fixedly connected with the connecting block, the cutting knife is fixedly connected with the upper end of the connecting block, the cutting groove is formed in the upper end face of the fixed die plate, the cutting groove is communicated with the sliding groove, the cutting knife is slidably connected with the cutting groove, the oil cylinder is fixedly connected in the fixed die plate, an oil cylinder output shaft is fixedly connected with the second rack, the second rack is slidably connected with the installing block, the second rack is meshed with the gear, and when the shearing device works, after an injection molding piece is molded, the oil cylinder output shaft drives the second rack to move upwards and drives the gear to rotate, the gear drives the first rack to move upwards, the first rack drives the connecting block to move upwards, and the connecting block drives the cutter to move upwards, so that the effect of shearing and separating the injection molding piece and the sprue is achieved.

As the utility model discloses further scheme again: the spacing groove has been seted up in the installation piece, sliding connection has the sprue in the spacing groove, sliding connection between sprue and the spout, the during operation, before the injection molding machine injected into the mould intracavity and melts the plastics after, start through the cylinder, the cylinder drives second rack rebound, and the second rack is when removing extreme position, pushes up the installation piece rebound, and the installation piece drives the sprue rebound, has reached the effect of plugging up the grooving to prevent to have plastics to permeate into in the grooving when moulding plastics.

As a further aspect of the present invention: the fixed plate is fixedly connected to the surface of the mounting block, the fixed plate is connected with the sliding groove in a sliding mode, the spring is fixedly connected in the sliding groove, the lower end of the spring is fixedly connected with the fixed plate, when the oil cylinder retracts in the working process, the mounting block can be pressed downwards under the action of the spring, the effect that the mounting block descends along with the second rack is achieved, and the effect that the plugging block is pulled downwards to be separated from blocking the cutting groove is achieved.

Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a hydro-cylinder, first rack, the second rack, the gear, the sprue, the cutter, under the cooperation of grooving and spout, after the injection molding shaping and stereotype, at this moment retract through starting the hydro-cylinder, at the effect of spring and fixed plate, through the resilience force of spring, drive the fixed plate and move down, the fixed plate drives the installation piece and moves down, at this moment the installation piece drives the sprue and moves down, thereby make the sprue break away from the effect of blocking up the grooving, simultaneously when the cylinder retracts, the cylinder output shaft drives the second rack, the second rack drives gear rotation, the gear drives the rotation of first rack, the first rack drives connecting block and moves up, the connecting block drives the cutter and moves up, thereby reached the effect of breaking off sprue and injection molding, when solving current injection mold when carrying out the separation of sprue and injection molding, generally need simply go to cut the separation through artifical use, this may affect the quality of the injection-molded part and may be inefficient.

Drawings

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

FIG. 2 is a schematic structural view of the present invention in front elevation and section;

fig. 3 is a schematic structural diagram of a portion a in fig. 2 according to the present invention;

FIG. 4 is a schematic structural view of the left side cross section of the present invention;

fig. 5 is a schematic structural diagram of a portion B in fig. 4 according to the present invention; fig. 6 is a schematic structural view of the middle mold core 7 and the mold core 8 of the present invention;

FIG. 7 is a schematic structural view of a middle shearing device according to the present invention;

fig. 8 is a schematic structural diagram of the middle split of the present invention.

In the figure: 1-bottom plate, 2-backing plate, 3-fixed die plate, 4-guide post, 5-movable die plate, 6-top plate, 7-die core, 8-die core, 9-sliding groove, 10-thimble bottom plate, 11-thimble, 12-thimble passing plate, 13-pouring opening, 14-flow channel, 15-sprue, 16-cutting knife, 17-connecting block, 18-cutting knife, 19-oil cylinder, 20-mounting block, 21-gear, 22-first rack, 23-second rack, 24-limiting groove, 25-blocking block, 26-fixing plate, and 27-spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 8, in an embodiment of the present invention, an in-mold gate shearing structure for an injection mold includes a bottom plate 1, a backing plate 2 fixedly connected to an upper end of the bottom plate 1, a fixed mold plate 3 fixedly connected to an upper end of the backing plate 2, a guide post 4 fixedly connected to an inner side of the fixed mold plate 3, a movable mold plate 5 slidably connected to a circumference of the guide post 4, a top plate 6 fixedly connected to an upper end of the movable mold plate 5, a mold core 7 fixedly connected to an inner side of the fixed mold plate 3, a mold core 8 fixedly connected to an inner side of the fixed mold plate 3, a chute 9 formed in the fixed mold plate 3 and the mold core 7, and a shearing device slidably connected to the chute 9.

As a further aspect of the present invention: the upper end of the bottom plate 1 is attached with a thimble passing plate 12, a thimble 11 is fixedly connected in the thimble passing plate 12, the thimble 11 penetrates through the fixed die plate 3 and the die core 7, the upper end surface of the thimble 11 and the upper end surface of the die core 7 are in the same plane, in operation, after an injection molding piece is molded, the injection molding machine drives the thimble 11 to move by pushing the thimble bottom plate 10, and therefore the effect of pushing the injection molding piece out through the thimble 11 is achieved.

As a further aspect of the present invention: runner 14 and pouring mouth 13 have been seted up to the terminal surface under the mold core 8, fixedly connected with purt mouth 15 in the roof 6, intercommunication between purt mouth 15, pouring mouth 13 and the runner 14, and during operation, the plastics after the injection molding machine will melt pour into in the purt mouth 15, and the rethread purt mouth 15, runner 14 and runner pour into the mold cavity into to the effect that forms the injection molding has been reached.

As a further aspect of the present invention: the shearing device comprises a cutter 16, a connecting block 17, a cutting groove 18, an oil cylinder 19, an installing block 20, a gear 21, a first rack 22 and a second rack 23, the installing block 20 and the connecting block 17 are connected in a sliding way 9, the gear 21 is connected in the installing block 20 in a rotating way, the first rack 22 is meshed between the gears 21, the first rack 22 is fixedly connected with the connecting block 17, the cutter 16 is fixedly connected with the upper end of the connecting block 17, the cutting groove 18 is formed in the upper end surface of a fixed die plate 3, the cutting groove 18 is communicated with the sliding way 9, the cutter 16 is slidably connected with the cutting groove 18, the oil cylinder 19 is fixedly connected in the fixed die plate 3, an output shaft of the oil cylinder 19 is fixedly connected with the second rack 23, the second rack 23 is slidably connected with the installing block 20, the second rack 23 is meshed with the gear 21, and when the shearing device works, after an injection molding piece is molded, the oil cylinder 19 is started, the output shaft of the oil cylinder 19 drives the second rack 23 to move upwards, the second rack 23 drives the gear 21 to rotate, the gear 21 drives the first rack 22 to move upwards, the first rack 22 drives the connecting block 17 to move upwards, and the connecting block 17 drives the cutter 16 to move upwards, so that the effect of shearing and separating the injection molding part and the sprue is achieved.

As a further aspect of the present invention: spacing groove 24 has been seted up in installation piece 20, sliding connection has sprue 25 in the spacing groove 24, sliding connection between sprue 25 and the spout 9, in operation, before the injection molding machine injected into the mould intracavity and melts the plastics after, start through the cylinder, the cylinder drives second rack 23 rebound, second rack 23 is when removing extreme position, the installation piece 20 upwards removes is moved in the top, installation piece 20 drives sprue 25 upwards removes, the effect of plugging up grooving 18 has been reached, and prevent that plastics from permeating into grooving 18 when moulding plastics.

As a further aspect of the present invention: the fixed surface of the mounting block 20 is fixedly connected with a fixing plate 26, the fixing plate 26 is in sliding connection with the sliding groove 9, a spring 27 is fixedly connected in the sliding groove 9, the lower end of the spring 27 is fixedly connected with the fixing plate 26, in operation, when the oil cylinder 19 retracts, the mounting block 20 is pressed downwards under the action of the spring 27, and therefore the effect that the mounting block 20 descends along with the second rack 23 is achieved, and the effect that the blocking block 25 is pulled downwards to be separated from blocking the cutting groove 18 is achieved.

The utility model discloses a theory of operation is: when the utility model is used, the melted clinker is injected into the sprue 15 by injection molding, then enters the runner 14 through the sprue 15, and then enters the mold cavity through the pouring opening 13, after the injection molding part is molded and cooled, the clinker is retracted by the oil cylinder 19, at this time, under the action of the support of the spring 27, the mounting shell descends along with the second rack 23, the mounting shell drives the block 25 to move downwards, meanwhile, when the second rack 23 moves downwards, after moving to the limit distance, the oil cylinder continues to operate, the second rack 23 drives the gear 21 to rotate, the gear 21 drives the first rack 22 to rotate, the first rack 22 drives the connecting block 17 to move upwards, the connecting block 17 drives the cutter 16 to move upwards, at this time, the cutter 16 extends upwards through the cutting groove 18, then the sprue at the connection part between the pouring opening 13 and the injection molding part is cut and separated, at this time, the mold opening is carried out by the injection molding machine, then the thimble bottom plate 10 is jacked, at this time, the thimble 11 extends outwards to eject the injection molding part outwards, before the next injection molding part is injected, the output shaft of the oil cylinder 19 extends outwards, the output shaft of the air cylinder drives the second rack 23 to move upwards, the second rack 23 drives the gear 21 to rotate, the gear 21 drives the first rack 22 to move downwards, the first rack 22 drives the connecting block 17 and the cutter 16 to move downwards, after the mounting block 20 moves upwards to the limit position, the mounting block 23 abuts against the top of the sliding groove 9, so that the effect of resetting the shearing device is achieved, after the second rack 23 supports against the mounting shell while moving, the blocking block 25 is pushed upwards, the effect of blocking the cutting groove 18 is achieved by the blocking block 25, and plastic is prevented from entering the cutting groove 18 during injection molding, and the operation of the subsequent shearing device is prevented.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an injection mold is with interior runner shear structure, includes bottom plate (1), its characterized in that: bottom plate (1) upper end fixedly connected with backing plate (2), backing plate (2) upper end fixedly connected with fixed die plate (3), fixedly connected with guide post (4) in fixed die plate (3), guide post (4) periphery sliding connection has movable mould board (5), fixedly connected with roof (6) in movable mould board (5) upper end, fixedly connected with mould benevolence (7) in fixed die plate (3), fixedly connected with mould core (8) in fixed die plate (3), spout (9) have been seted up in fixed die plate (3) and mould benevolence (7), sliding connection has shearing mechanism in spout (9).

2. The in-mold gate shearing structure for an injection mold as recited in claim 1, wherein: the ejector pin-passing plate (12) is attached to the upper end of the base plate (1), an ejector pin (11) is fixedly connected in the ejector pin-passing plate (12), the ejector pin (11) penetrates through the fixed die plate (3) and the die core (7), and the upper end face of the ejector pin (11) and the upper end face of the die core (7) are in the same plane.

3. The in-mold gate shearing structure for an injection mold as recited in claim 1, wherein: runner (14) and pouring mouth (13) have been seted up to mold core (8) lower terminal surface, fixedly connected with purt mouth (15) in roof (6), communicate between purt mouth (15), pouring mouth (13) and runner (14).

4. The in-mold gate shearing structure for an injection mold as recited in claim 1, wherein: the shearing device comprises a cutter (16), a connecting block (17), a cutting groove (18), an oil cylinder (19), a mounting block (20), a gear (21), a first rack (22) and a second rack (23), the mounting block (20) and the connecting block (17) are connected in the sliding groove (9) in a sliding manner, the gear (21) is connected in the mounting block (20) in a rotating manner, the first rack (22) is meshed between the gears (21), the first rack (22) is fixedly connected with the connecting block (17), the cutter (16) is fixedly connected at the upper end of the connecting block (17), the cutting groove (18) is formed in the upper end face of the fixed die plate (3), the cutting groove (18) is communicated with the sliding groove (9), the cutter (16) is connected with the cutting groove (18) in a sliding manner, the oil cylinder (19) is fixedly connected in the fixed die plate (3), and the second rack (23) is fixedly connected with an output shaft of the oil cylinder (19), the second rack (23) is connected with the mounting block (20) in a sliding mode, and the second rack (23) is meshed with the gear (21).

5. The in-mold gate shearing structure for an injection mold as recited in claim 4, wherein: limiting grooves (24) are formed in the mounting blocks (20), plugging blocks (25) are connected in the limiting grooves (24) in a sliding mode, and the plugging blocks (25) are connected with the sliding grooves (9) in a sliding mode.

6. The in-mold gate shearing structure for an injection mold as recited in claim 4, wherein: the surface of the mounting block (20) is fixedly connected with a fixing plate (26), the fixing plate (26) is connected with the sliding groove (9) in a sliding mode, the sliding groove (9) is internally fixedly connected with a spring (27), and the lower end of the spring (27) is fixedly connected with the fixing plate (26).