CN215472834U - Injection mold of cutting in mould - Google Patents

Abstract

The utility model discloses an injection mold for in-mold cutting, which is arranged on an injection molding machine with a neutron control oil way; the cutting device comprises a first die, a second die, a cutter and a cutter oil cylinder, wherein the first die and the second die are matched to form a die cavity for forming a product, the first die is provided with a feed port, the die cavity comprises a product cavity for forming the product and a connecting cavity for connecting the feed port with the product cavity, the connecting cavity is provided with a forming water gap, the cutter is arranged on one side of the connecting part of the connecting cavity and the product cavity, and the cutter oil cylinder drives the cutter to move towards the side close to the die cavity and cut off the connection between the product and the water gap; the cutter oil cylinder is connected to the neutron control oil path. The utility model utilizes the neutron control oil circuit in the injection molding machine to control the cutter, so that an additional controller is not needed, and the use is very convenient.

Description

Injection mold of cutting in mould

Technical Field

The utility model relates to the field of injection molds, in particular to an injection mold for in-mold cutting.

Background

In the process of molding and manufacturing the part through the mold, a liquid material needs to be injected into a molding cavity of the mold through a water gap, and after molding is completed, a water gap material with the same shape as the water gap is formed on the product, and the water gap material does not belong to the structure of the product, so that the water gap material needs to be removed from the product.

In the prior art, the nozzle material is generally removed after the part is demoulded, so that stations in a production line are increased, the production and transportation cost is increased, in addition, the structure of the part is not supported after the part is demoulded, the deformation of the part is easily caused in the process of removing the nozzle material, or cracks are generated on the surface of the part, and particularly, the rejection rate can be greatly improved for some thin parts with higher precision requirements. Therefore, the in-mold cutting technology in the prior art is provided, and generally, the in-mold cutting needs to be additionally provided with a controller, which is very inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides the injection mold for in-mold cutting, wherein a neutron control oil circuit in an injection molding machine is used for controlling a cutter, so that an additional controller is not required, and the use is very convenient.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

an injection mold for in-mold cutting is installed on an injection molding machine with a neutron control oil way; the cutting device comprises a first die, a second die, a cutter and a cutter oil cylinder, wherein the first die and the second die are matched to form a die cavity for forming a product, the first die is provided with a feed port, the die cavity comprises a product cavity for forming the product and a connecting cavity for connecting the feed port with the product cavity, the connecting cavity forms a water gap, the cutter is arranged on one side of the connecting part of the connecting cavity and the product cavity, and the cutter oil cylinder drives the cutter to move towards the side close to the die cavity and cut off the connection between the product and the water gap; and the cutter oil cylinder is connected into a neutron control oil way.

By adopting the structure, the cutter oil cylinder for driving the cutter to act is connected into the neutron control oil way, so that the neutron action is only required to be arranged on the injection molding machine before injection molding, the neutron control oil way controls the cutter oil cylinder to enable the cutter to move towards the side close to the mold cavity to realize feed or move towards the side far away from the mold cavity to realize retraction, and the cutter is arranged at one side of the joint of the connecting cavity and the product cavity, so that the cutter can cut off the connection between the product and the water gap, namely the product is separated from the water gap.

By adopting the structure, the intramembrane hot cutting can be realized, and the incision can be smoother and smoother by the intramembrane hot cutting.

Specifically, the injection molding machine is provided with a plurality of neutron control oil paths, the cutter oil cylinder only needs to occupy one of the paths, and in the setting process, the control on the cutter only needs to set neutron parameters corresponding to the path.

Furthermore, the injection mold for in-mold cutting comprises a cutter fixing plate for mounting the cutters, and the number of the cutters is multiple; the cutter oil cylinder is connected with the cutter fixing plate so as to drive the cutter to move by driving the cutter fixing plate.

By adopting the structure, the cutter fixing plate can synchronously drive the plurality of cutters arranged on the cutter fixing plate; the number of cutters depends on the number of connections of the product chamber and the connecting chamber.

Specifically, the cutter oil cylinder is connected with the cutter fixing plate through a connecting rod; the cutter oil cylinder is provided with two cutter oil cylinders which are respectively positioned at two ends of the cutter fixing plate, and the cutter fixing plate is more stable to move due to the adoption of the structure.

Specifically, the cutter fixing plate comprises a first cutter fixing plate and a second cutter fixing plate, the first cutter fixing plate and the second cutter fixing plate are fixed in an overlapped mode, specifically, the first cutter fixing plate and the second cutter fixing plate are fixed through screws, a first through hole matched with the cutter is formed in the first cutter fixing plate, a first bulge is formed in the outer side of one end, connected with the cutter fixing plate, of the cutter in a protruding mode, and the first through hole is sunken towards the inner wall of one side of the second cutter fixing plate to form a first matching groove matched with the first bulge; in the structure, the first matching groove is matched with the second cutter fixing plate to limit the first bulge, so that the installation of the cutter is realized; furthermore, the cutter and the second cutter fixing plate are fixed through screws.

Further, the cutter fixing plate is arranged on the opposite side of the second mold for forming the mold cavity side, and the second mold is provided with a cutter through hole for the cutter to reach the connection position of the connecting cavity and the product cavity; the injection mold for cutting in the mold comprises a cutter resetting piece, wherein the cutter resetting piece acts on the cutter fixing plate to enable the cutter fixing plate to have a trend of moving far away from the mold cavity side.

The cutter oil cylinder is a one-way oil cylinder; by adopting the structure, when the cutter oil cylinder drives the cutter to feed and finish the cutting action, the cutter resetting piece acts on the fixing plate to enable the fixing plate to be far away from the die cavity, so that the cutter withdrawing action of the cutter is realized.

Further, the second die is used for forming a first groove matched with the cutter fixing plate in a concave mode on the opposite side of the die cavity side, and the cutter fixing plate is installed in the first groove in a sliding mode.

By adopting the structure, the first groove has a guiding effect on the sliding of the cutter fixing plate, so that the sliding of the cutter fixing plate is more stable.

Further, the cutter piece that resets is the elastic component, the cutter fixed plate orientation one side of die cavity is sunken form with the cutter resets a assorted second recess, the cutter resets and is located in the second recess and one end with the bottom surface butt of second recess, the other end with the bottom surface butt of first recess.

By adopting the structure, when the cutter is fed, namely the cutter moves towards the die cavity side, the cutter fixing plate moves towards the bottom side close to the first groove, so that the cutter resetting piece is compressed and deformed; when the cutter is withdrawn, the cutter oil cylinder does not provide power, and the cutter resetting piece drives the cutter fixing plate to move towards the side far away from the bottom surface of the first groove, so that the cutter resetting piece is reset;

the second groove has a certain limiting and guiding effect on the cutter resetting piece, so that the cutter resetting piece is not twisted in the telescopic process, the elastic precision of the cutter resetting piece is guaranteed, and the service life of the cutter resetting piece is prolonged.

Specifically, the cutter reset piece is a spring; the cutter reset pieces are provided with a plurality of corresponding second grooves; under the state that the cutter is far away from the die cavity, namely the cutter fixing piece is far away from the bottom surface of the first groove, most of the cutter resetting piece extends into the second groove, namely more than half of the cutter resetting piece extends into the second groove.

Furthermore, the injection mold for in-mold cutting comprises a product ejector pin for ejecting a product out of the product cavity, the second mold is provided with a first ejector pin through hole for the product ejector pin to slide, one end of the first ejector pin through hole is communicated with the product cavity, the product ejector pin is in a non-ejection state, one end of the ejector pin, facing the product cavity, does not extend out of the product cavity and is also used for forming the product cavity; the product thimble is in ejecting state, the thimble stretches out the product chamber towards the one end in product chamber.

By adopting the structure, after the first die and the second die are away from each other to finish the die opening action, the product thimble extends out of the product cavity to eject the product, so that the use is convenient.

Furthermore, the injection mold for in-mold cutting comprises a nozzle ejector pin for ejecting a nozzle out of the connecting cavity, the second mold is provided with a second ejector pin hole for the nozzle ejector pin to slide in a penetrating manner, one end of the second ejector pin hole is communicated with the connecting cavity, and one end of the nozzle ejector pin, which faces the connecting cavity, can extend out of the connecting cavity.

By adopting the structure, when the first mold and the second mold are far away from each other, namely the mold opening action is completed, the water gap ejector pin extends out of the connecting cavity to eject the water gap, and the use is convenient.

Furthermore, the injection mold for in-mold cutting comprises a thimble fixing plate and a thimble resetting piece, wherein the product thimbles are fixedly arranged on the thimble fixing plate and are provided with a plurality of thimble resetting pieces; the ejector pin resetting piece acts on the ejector pin fixing plate to enable the ejector pin fixing plate to have a tendency of moving towards the side far away from the die cavity.

The ejector pin fixing plate can synchronously drive a product ejector pin arranged on the ejector pin fixing plate, and specifically, the water gap ejector pin is arranged on the ejector pin fixing plate.

After the ejector pin fixing plate moves towards the side close to the die cavity to enable the product ejector pins and the water gap ejector pins to finish the ejector pin action, the ejector pin resetting piece acts on the ejector pin fixing plate to enable the ejector pin fixing plate to move towards the side far away from the die cavity to finish resetting; specifically, the thimble resetting piece is an elastic piece, one end of the thimble resetting piece abuts against the thimble fixing plate, and the other end of the thimble resetting piece abuts against the second die, when the thimble fixing plate moves towards the side close to the die cavity, the thimble resetting piece is compressed and deformed, and when the driving force on the thimble fixing plate is removed, the thimble resetting piece can drive the thimble fixing plate to move towards the side far from the die cavity to complete resetting; more specifically, an elastic piece guide rod is arranged on the thimble fixing plate, the other end of the elastic piece guide rod is arranged on the second die in a sliding mode, the thimble resetting piece is a spring and sleeved on the elastic piece guide rod, and the elastic piece guide rod has a certain limiting and guiding effect on the thimble resetting piece, so that the thimble resetting piece is not twisted in the stretching process, the elastic precision of the thimble resetting piece is ensured, and the service life of the thimble resetting piece is prolonged; the thimble reset piece is provided with a plurality of, and correspondingly, the elastic component guide bar is provided with a plurality of.

Specifically, the thimble fixing plate comprises a first thimble fixing plate and a second thimble fixing plate, the first thimble fixing plate and the second thimble fixing plate are fixed in an overlapped mode, specifically, the first thimble fixing plate and the second thimble fixing plate are fixed through screws, a second through hole matched with the reset piece guide rod is formed in the first thimble fixing plate, a second bulge is formed in the outer side of one end, connected with the thimble fixing plate, of the reset piece guide rod, and the second through hole is sunken towards the inner wall of one side of the second thimble fixing plate to form a second matching groove matched with the second bulge; a third through hole matched with the product thimble and the water gap thimble is formed in the first thimble fixing plate, a third bulge is formed by the outer side of one end, connected with the thimble fixing plate, of the product thimble and the water gap thimble, and the third through hole is sunken towards the inner wall of one side of the second thimble fixing plate to form a third matching groove matched with the third bulge; in the structure, the second matching groove is matched with the second ejector pin fixing plate to limit the second protrusion, and the third matching groove is matched with the second ejector pin fixing plate to limit the third protrusion, so that the installation of the reset piece guide rod, the product ejector pin and the water gap ejector pin is realized.

Further, the injection mold for in-mold cutting comprises a first fixing part for mounting the first mold and a second fixing part for mounting the second mold; the first fixing piece is provided with a guide sleeve, the second fixing piece is provided with a guide pillar, and the guide pillar is arranged in the guide sleeve in a sliding mode to guide the first fixing piece and the second fixing piece to approach or depart from each other.

By adopting the structure, the first fixing piece and the second fixing piece are close to and far away from each other, so that the die assembly and die disassembly of the first die and the second die are realized; the guide pillar and the guide sleeve are matched with each other to play a role in guiding and limiting, so that the first fixing piece and the second fixing piece move more stably when approaching or departing from each other.

Furthermore, be provided with the thimble fixed plate guide bar on the second mounting along being close to keep away from in the direction of die cavity, be provided with on the thimble fixed plate with thimble fixed plate guide bar assorted guiding hole, the thimble fixed plate passes through the guiding hole cover is established on the thimble fixed plate guide bar, the second mounting is provided with the connecting hole that supplies thimble hydro-cylinder and thimble fixed plate to be connected.

By adopting the structure, the guide rod of the thimble fixing plate is matched with the guide hole to realize the guide limit of the thimble fixing plate, so that the movement of the thimble fixing plate is more stable.

Specifically, the second fixing piece comprises a connecting plate and fixing blocks arranged on two sides of the connecting plate, the thimble fixing plate is arranged between the two fixing blocks, and correspondingly, the thimble fixing plate guide rod is arranged between the two fixing blocks; the second die and the guide post are arranged on the fixing block.

Further, the first mold comprises a first mold core and a first mold fixing part for fixing the first mold core, the first mold fixing part is provided with a first mounting concave hole matched with the first mold core, and the first mold core is embedded in the first mounting concave hole;

the second mold comprises a second mold core and a second mold fixing part for fixing the second mold core, the second mold fixing part is provided with a second mounting concave hole matched with the second mold core, and the second mold core is embedded in the first mounting concave hole;

the first mold core and the second mold core are matched to form a mold cavity for molding a product.

By adopting the structure, in the production process, if the first mold core and the second mold core are damaged, only the first mold core and the second mold core need to be replaced, the production process is convenient and practical, and the cost is reduced.

Compared with the prior art, the utility model has the following beneficial effects:

(1) according to the injection mold for in-mold cutting, the neutron control oil circuit in the injection molding machine is used for controlling the cutter, so that an additional controller is not needed, the use is very convenient, and in-mold cutting can be realized.

(2) According to the injection mold for in-mold cutting, the cutter and the product ejector pin are respectively controlled, and ejection after cutting can be realized, so that a product cavity can have a certain supporting effect on a product during cutting, and the product is effectively prevented from deforming.

(3) The injection mold for in-mold cutting is provided with the water gap ejector pin, so that the water gap can be automatically ejected out, and the injection mold is convenient to use.

Drawings

FIG. 1 is a schematic perspective view of an injection mold for in-mold cutting according to the present invention;

FIG. 2 is a schematic view of the installation of a first mold and a second mold in the injection mold for in-mold cutting according to the present invention;

FIG. 3 is a schematic structural diagram of a second mold and a second fixing member of the injection mold for in-mold cutting according to the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is a schematic cross-sectional view of the cutting blade of the injection mold for in-mold cutting according to the present invention;

FIG. 6 is an enlarged view at B in FIG. 5;

FIG. 7 is a schematic view of the second mold and the thimble fixing plate of the injection mold for in-mold cutting according to the present invention;

FIG. 8 is a schematic view of the installation of a cutter in the injection mold for in-mold cutting according to the present invention;

FIG. 9 is a schematic cross-sectional view of a product ejector pin in the injection mold for in-mold cutting according to the present invention;

FIG. 10 is an enlarged view at C of FIG. 9;

FIG. 11 is a schematic cross-sectional view of a sprue bushing of an in-mold cutting injection mold according to the present invention;

FIG. 12 is an enlarged view at D of FIG. 11;

FIG. 13 is a schematic view of the mounting of the ejector pin retaining plate of the in-mold cutting injection mold of the present invention;

FIG. 14 is a schematic view of the installation of product ejector pins and nozzle ejector pins in the injection mold for in-mold cutting according to the present invention;

reference numerals: 1 a first mold; 101 a feed inlet; 102 a first mold core; 103 first mold firmware; 2 a second mold; 201, perforating by a cutter; 202 a first groove; 203 perforating a first thimble; 204 a second thimble perforation; 205 a second mold core; 206 second mold firmware; 3, cutting; 301 a first protrusion; 4, a cutter oil cylinder; 5, a die cavity; 501, a product cavity; 502 connecting the chambers; 6, fixing a cutter plate; 601 a second groove; 602 a first cutter holding plate; 6021 a first through hole; 6022 a first mating groove; 603 a second cutter fixing plate; 7, a cutter reset piece; 8, product thimble; 9 water gap thimble; 10, a thimble fixing plate; 1001 guide hole; 1002 a first thimble fixing plate; 10021 a second perforation; 10022 a second mating groove; 10023 a third perforation; 10024 a third mating groove; 1003 second thimble fixing plate; 11 a thimble reset piece; 12 a first fixing member; 13 a second fixing member; 1301 connecting holes; 1302 a connecting plate; 1303 fixed block; 14, a guide sleeve; 15 guide pillars; 16 thimble fixing plate guide rods; 17 connecting rods; 18 a spring guide bar; 1801 a second protrusion; 19 a third projection.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1-14, an in-mold cutting injection mold is mounted on an injection molding machine having a neutron control oil circuit; the cutting die comprises a first die 1, a second die 2, a cutter 3 and a cutter oil cylinder 4, wherein the first die 1 and the second die 2 are matched to form a die cavity 5 for forming a product, the first die 1 is provided with a feeding hole 101, the die cavity 5 comprises a product cavity 501 for forming the product and a connecting cavity 502 for connecting the feeding hole 101 with the product cavity 501, the connecting cavity 502 forms a water gap, the cutter 3 is arranged at one side of the joint of the connecting cavity 502 with the product cavity 501, and the cutter oil cylinder 4 drives the cutter 3 to move towards the side close to the die cavity 5 and cut off the connection between the product and the water gap; and the cutter oil cylinder 4 is connected to a neutron control oil way.

By adopting the structure, the cutter oil cylinder 4 for driving the cutter 3 to act is connected into the neutron control oil way, so that the neutron action is only required to be arranged on an injection molding machine before injection molding, the neutron control oil way controls the cutter oil cylinder 4 to enable the cutter 3 to move towards the side close to the mold cavity 5 to realize the feed or move towards the side far away from the mold cavity 5 to realize the retreat, and the cutter 3 is arranged at one side of the joint of the connecting cavity and the product cavity 501, so that the cutter 3 can cut off the connection between the product and the water gap, namely the product is separated from the water gap.

By adopting the structure, the intramembrane hot cutting can be realized, and the incision can be smoother and smoother by the intramembrane hot cutting.

Specifically, the injection molding machine is provided with a plurality of neutron control oil paths, the cutter oil cylinder 4 only needs to occupy one of the paths, and in the setting process, the control of the beveling cutter 3 only needs to set neutron parameters corresponding to the paths.

Preferably, the injection mold for in-mold cutting comprises a cutter fixing plate 6 for mounting the cutters 3, and a plurality of cutters 3 are arranged; the cutter oil cylinder 4 is connected with the cutter fixing plate 6 to drive the cutter 3 to move by driving the cutter fixing plate 6.

By adopting the structure, the cutter fixing plate 6 can synchronously drive the plurality of cutters 3 arranged on the cutter fixing plate; the number of cutters 3 depends on the number of connections of the product chamber 501 to the connecting chamber 502.

Specifically, the cutter oil cylinder 4 is connected with the cutter fixing plate 6 through a connecting rod 17; the cutter oil cylinders 4 are provided with two ends which are respectively positioned at the two ends of the cutter fixing plate 6, and the cutter fixing plate 6 is more stable to move due to the adoption of the structure.

Specifically, the cutter fixing plate 6 includes a first cutter fixing plate 602 and a second cutter fixing plate 603, the first cutter fixing plate 602 and the second cutter fixing plate 603 are fixed in an overlapping manner, specifically, the first cutter fixing plate 602 and the second cutter fixing plate 603 are fixed by screws, a first through hole 6021 matched with the cutter 3 is arranged on the first cutter fixing plate 602, a first protrusion 301 is formed by protruding the outer side of one end of the cutter 3 connected with the cutter fixing plate 6, and a first matching groove 6022 matched with the first protrusion 301 is formed by recessing the first through hole 6021 towards the inner wall of one side of the second cutter fixing plate 603; in the above structure, the first engaging groove 6022 cooperates with the second cutter fixing plate 603 to limit the first protrusion 301, so as to mount the cutter 3; more preferably, the cutter 3 and the second cutter fixing plate 603 are fixed by screws.

Preferably, the cutter fixing plate 6 is arranged on the opposite side of the second mold 2 for forming the mold cavity 5, and the second mold 2 is provided with a cutter through hole 201 for the cutter 3 to reach the connection position of the connecting cavity 502 and the product cavity 501; the injection mold for cutting in the mold comprises a cutter resetting piece 7, wherein the cutter resetting piece 7 acts on the cutter fixing plate 6 to enable the cutter fixing plate 6 to have the tendency of moving towards the side far away from the mold cavity 5.

The cutter oil cylinder 4 is a one-way oil cylinder; by adopting the structure, when the cutter oil cylinder 4 drives the cutter 3 to feed and finish cutting action, the cutter resetting piece 7 acts on the fixing plate to enable the fixing plate to be far away from the die cavity 5, so that the cutter 3 retreats.

Preferably, the second mold 2 is recessed to form a first groove 202 matching with the cutter fixing plate 6 on the opposite side of the mold cavity 5, and the cutter fixing plate 6 is slidably mounted in the first groove 202.

By adopting the structure, the first groove 202 has a guiding function on the sliding of the cutter fixing plate 6, so that the sliding of the cutter fixing plate is more stable.

Preferably, the cutter resets 7 and is the elastic component, cutter fixed plate 6 towards one side of die cavity 5 is sunken form with cutter resets 7 assorted second recess 601, cutter resets 7 and is located in the second recess 601 and one end with the bottom surface butt of second recess 601, the other end with the bottom surface butt of first recess 202.

By adopting the structure, when the cutter is fed, namely the cutter 3 moves towards the mold cavity 5 side, the cutter fixing plate 6 moves towards the bottom side close to the first groove 202, so that the cutter resetting piece 7 is compressed and deformed; when the cutter is withdrawn, the cutter oil cylinder 4 does not provide power, and the cutter resetting piece 7 drives the cutter fixing plate 6 to move towards the bottom side far away from the first groove 202, so that the cutter resetting piece 7 is reset;

the second groove 601 has a certain limiting and guiding function on the cutter resetting piece 7, so that the cutter resetting piece 7 is not twisted in the telescopic process, the elastic precision of the cutter resetting piece 7 is ensured, and the service life of the cutter resetting piece 7 is prolonged.

Specifically, the cutter reset piece 7 is a spring; the number of the cutter resetting pieces 7 is correspondingly that the number of the second grooves 601 is correspondingly that; under the state that the cutting knife 3 is far away from the die cavity 5, namely the fixing piece of the cutting knife 3 is far away from the bottom surface of the first groove 202, most of the cutting knife resetting piece 7 extends into the second groove 601, namely more than half of the cutting knife resetting piece 7 extends into the second groove 601.

Preferably, the injection mold for in-mold cutting includes a product thimble 8 for ejecting a product out of the product cavity 501, the second mold 2 is provided with a first thimble through hole 203 for the product thimble 8 to slide through, one end of the first thimble through hole 203 is communicated with the product cavity 501, the product thimble 8 is in a non-ejection state, and one end of the thimble facing the product cavity 501 does not extend out of the product cavity 501 and is further used for forming the product cavity 501; the product ejector pins 8 are in an ejection state, and extend out of the product cavity 501 towards one end of the product cavity 501.

By adopting the structure, after the first die 1 and the second die 2 are far away from each other to finish the die opening action, the product thimble 8 extends out of the product cavity 501 to eject the product, the use is convenient,

preferably, the injection mold for in-mold cutting includes a nozzle thimble 9 for ejecting a nozzle out of the connection cavity 502, the second mold 2 is provided with a second thimble through hole 204 for the nozzle thimble 9 to slide, one end of the second thimble through hole 204 is communicated with the connection cavity 502, and one end of the nozzle thimble 9 facing the connection cavity 502 can extend out of the connection cavity 502.

By adopting the structure, after the first die 1 and the second die 2 are far away from each other to finish the die sinking action, the water gap ejector pin 9 extends out of the connecting cavity 502 to eject the water gap, so that the use is convenient.

Preferably, the injection mold for in-mold cutting comprises a thimble fixing plate 10 and a thimble resetting member 11, and the product thimbles 8 are fixedly mounted on the thimble fixing plate 10 and provided with a plurality of thimble resetting members; the thimble returning element 11 acts on the thimble retaining plate 10 to make it tend to move away from the mold cavity 5.

The thimble fixing plate 10 can synchronously drive a product thimble 8 arranged on the thimble fixing plate, and specifically, the water gap thimble 9 is arranged on the thimble fixing plate 10.

After the thimble fixing plate 10 moves towards the side close to the mold cavity 5 to enable the product thimble 8 and the water gap thimble 9 to finish the thimble action, the thimble resetting piece 11 acts on the thimble fixing plate 10 to enable the thimble fixing plate to move towards the side far from the mold cavity 5 to finish the resetting; specifically, the thimble resetting piece 11 is an elastic piece, one end of the thimble resetting piece 11 abuts against the thimble fixing plate 10, and the other end of the thimble resetting piece 11 abuts against the second mold 2, when the thimble fixing plate 10 moves towards the side close to the mold cavity 5, the thimble resetting piece 11 compresses and deforms, and when the driving force on the thimble fixing plate 10 is removed, the thimble resetting piece 11 drives the thimble fixing plate 10 to move towards the side far from the mold cavity 5 to complete resetting; more specifically, an elastic element guide rod 18 is arranged on the thimble fixing plate 10, the other end of the elastic element guide rod 18 is slidably arranged on the second die 2, the thimble resetting element 11 is a spring and is sleeved on the elastic element guide rod 18, and the elastic element guide rod 18 has a certain limiting and guiding effect on the thimble resetting element 11, so that the thimble resetting element 11 is not twisted in the process of stretching, the elastic accuracy of the thimble resetting element 11 is ensured, and the service life of the thimble resetting element 11 is prolonged; the thimble reset piece 11 is provided with a plurality of, correspondingly, the elastic piece guide rod 18 is provided with a plurality of.

Specifically, the thimble fixing plate 10 includes a first thimble fixing plate 1002 and a second thimble fixing plate 1003, the first thimble fixing plate 1002 and the second thimble fixing plate 1003 are fixed in an overlapping manner, specifically, the first thimble fixing plate 1002 and the second thimble fixing plate 1003 are fixed by screws, a second through hole 10021 matched with the reset piece guide rod is arranged on the first thimble fixing plate 1002, a second protrusion is formed by protruding the outer side of one end of the reset piece guide rod connected with the thimble fixing plate 10, and a second matching groove 10022 matched with the second protrusion is formed by the second through hole 10021 being recessed towards the inner wall of one side of the second thimble fixing plate 1003; a third through hole 10023 matched with the product thimble 8 and the water gap thimble 9 is formed in the first thimble fixing plate 1002, a third protrusion 19 is formed by protruding the outer side of one end of the product thimble 8, the water gap thimble 9 and the thimble fixing plate 10, and a third matching groove 10024 matched with the third protrusion 19 is formed by sinking the third through hole 10023 towards the inner wall of one side of the second thimble fixing plate 1003; in the above structure, the second matching groove 10022 and the second ejector pin fixing plate 1003 are matched to limit the second protrusion, and the third matching groove 10024 and the second ejector pin fixing plate 1003 are matched to limit the third protrusion 19, so as to realize the installation of the reset piece guide rod, the product ejector pin 8 and the nozzle ejector pin 9.

Preferably, the injection mold for in-mold cutting comprises a first fixing member 12 for mounting the first mold 1, and a second fixing member 13 for mounting the second mold 2; the first fixing part 12 is provided with a guide sleeve 14, the second fixing part 13 is provided with a guide post 15, and the guide post 15 is slidably arranged in the guide sleeve 14 to guide the first fixing part 12 and the second fixing part 13 to approach or move away from each other.

With the above structure, the first fixing member 12 and the second fixing member 13 approach and separate from each other to realize mold closing and mold opening of the first mold 1 and the second mold 2; the mutual matching of the guide post 15 and the guide sleeve 14 plays a role of guiding and limiting, so that the movement of the first fixing piece 12 and the second fixing piece 13 when approaching or departing from each other is more stable.

Preferably, second mounting 13 is gone up along being close to and keeping away from be provided with thimble fixing plate guide bar 16 in the direction of die cavity 5, be provided with on the thimble fixing plate 10 with 16 assorted guiding hole 1001 of thimble fixing plate guide bar, thimble fixing plate 10 passes through the guiding hole 1001 cover is established on the thimble fixing plate guide bar 16, second mounting 13 is provided with the connecting hole 1301 that supplies thimble hydro-cylinder and thimble fixing plate 10 to be connected.

With the above structure, the thimble fixing plate guide rod 16 and the guide hole 1001 are mutually matched to realize guiding and limiting of the thimble fixing plate 10, so that the thimble fixing plate 10 moves more stably.

Specifically, the second fixing element 13 includes a connecting plate 1302 and fixing blocks 1303 disposed on two sides of the connecting plate 1302, the thimble fixing plate 10 is disposed between the two fixing blocks 1303, and correspondingly, the thimble fixing plate guide rod 16 is disposed between the two fixing blocks 1303; the second mold 2 and the guide post 15 are disposed on the fixing block 1303.

Preferably, the first mold 1 comprises a first mold core 102 and a first mold fixing part 103 for fixing the first mold core 102, the first mold fixing part is provided with a first mounting concave hole matched with the first mold core 102, and the first mold core 102 is embedded in the first mounting concave hole;

the second mold 2 comprises a second mold core 205 and a second mold fixing part 206 for fixing the second mold core 205, the second mold fixing part is provided with a second mounting concave hole matched with the second mold core 205, and the second mold core 205 is embedded in the first mounting concave hole;

the first mold core 102 cooperates with the second mold core 205 to form a mold cavity 5 for molding a product.

By adopting the structure, in the production process, if the first mold core 102 and the second mold core 205 are damaged, only the first mold core 102 and the second mold core 205 need to be replaced, so that the production process is convenient and practical, and the cost is reduced.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides an injection mold of cutting in mould which characterized in that: the device is arranged on an injection molding machine with a neutron control oil way; the cutting device comprises a first die (1), a second die (2), a cutter (3) and a cutter oil cylinder (4), wherein the first die (1) and the second die (2) are matched to form a die cavity (5) for forming a product, the first die (1) is provided with a feeding hole (101), the die cavity (5) comprises a product cavity (501) for forming the product and a connecting cavity (502) for connecting the feeding hole (101) with the product cavity (501), the connecting cavity (502) forms a water gap, the cutter (3) is arranged on one side of the connecting part of the connecting cavity (502) and the product cavity (501), and the cutter oil cylinder (4) drives the cutter (3) to move towards the side close to the die cavity (5) and cut off the connection between the product and the water gap; the cutter oil cylinder (4) is connected to a neutron control oil way.

2. The in-mold cutting injection mold of claim 1, wherein: the cutting knife fixing plate comprises a plurality of cutting knives (3) and a cutting knife fixing plate (6) for mounting the cutting knives (3); the cutter oil cylinder (4) is connected with the cutter fixing plate (6) to drive the cutter (3) to move by driving the cutter fixing plate (6).

3. The in-mold cutting injection mold of claim 2, wherein: the cutter fixing plate (6) is arranged on the opposite side of the second mold (2) for forming the mold cavity (5), and the second mold (2) is provided with a cutter through hole (201) for the cutter (3) to reach the connection position of the connecting cavity (502) and the product cavity (501); the injection mold for cutting in the mold comprises a cutter resetting piece (7), wherein the cutter resetting piece (7) acts on the cutter fixing plate (6) to enable the cutter fixing plate to have a trend of moving towards the side far away from the mold cavity (5).

4. The in-mold cutting injection mold of claim 3, wherein: the second die (2) is used for forming a first groove (202) matched with the cutter fixing plate (6) in a concave mode on the opposite side of the die cavity (5) side, and the cutter fixing plate (6) is installed in the first groove (202) in a sliding mode;

the cutter resets piece (7) and is the elastic component, cutter fixed plate (6) orientation one side of die cavity (5) sunken form with cutter resets piece (7) assorted second recess (601), cutter resets piece (7) and is located in second recess (601) and one end with the bottom surface butt of second recess (601), the other end with the bottom surface butt of first recess (202).

5. The in-mold cutting injection mold of claim 1, wherein: the product ejection mechanism comprises a product ejection pin (8) for ejecting a product out of the product cavity (501), a first ejection pin through hole (203) for the product ejection pin (8) to slide is arranged in the second die (2) in a penetrating manner, one end of the first ejection pin through hole (203) is communicated with the product cavity (501), the product ejection pin (8) is in a non-ejection state, one end of the ejection pin, which faces the product cavity (501), does not extend out of the product cavity (501), and the ejection pin is further used for forming the product cavity (501); the product ejector pins (8) are in an ejection state, and one ends of the ejector pins, which face the product cavity (501), extend out of the product cavity (501).

6. The in-mold cutting injection mold of claim 1, wherein: the water gap ejector pin structure comprises a water gap ejector pin (9) used for ejecting a water gap out of the connecting cavity (502), a second ejector pin through hole (204) for the water gap ejector pin (9) to slide is arranged in the second die (2) in a penetrating mode, one end of the second ejector pin through hole (204) is communicated with the connecting cavity (502), and one end, facing the connecting cavity (502), of the water gap ejector pin (9) can extend out of the connecting cavity (502).

7. The in-mold cutting injection mold of claim 5, wherein: the product ejector pin reset device comprises an ejector pin fixing plate (10) and ejector pin reset pieces (11), wherein a plurality of product ejector pins (8) are fixedly arranged on the ejector pin fixing plate (10); the thimble resetting piece (11) acts on the thimble fixing plate (10) to enable the thimble fixing plate to have the tendency of moving towards the side far away from the die cavity (5).

8. The in-mold cutting injection mold of claim 1, wherein: comprises a first fixing part (12) for mounting the first mould (1) and a second fixing part (13) for mounting the second mould (2); the first fixing piece (12) is provided with a guide sleeve (14), the second fixing piece (13) is provided with a guide post (15), and the guide post (15) is arranged in the guide sleeve (14) in a sliding mode to guide the first fixing piece (12) and the second fixing piece (13) to approach or move away from each other.

9. The in-mold cutting injection mold of claim 7, wherein: including being used for the installation second mounting (13) of second mould (2), on second mounting (13) along be close to keep away from be provided with thimble fixed plate guide bar (16) in the direction of die cavity (5), be provided with on thimble fixed plate (10) with thimble fixed plate guide bar (16) assorted guiding hole (1001), thimble fixed plate (10) are passed through guiding hole (1001) cover is established on thimble fixed plate guide bar (16), second mounting (13) are provided with connecting hole (1301) that supply thimble hydro-cylinder and thimble fixed plate (10) to be connected.

10. The in-mold cutting injection mold of claim 1, wherein: the first mould (1) comprises a first mould core (102) and a first mould fixing piece (103) used for fixing the first mould core (102), the first mould fixing piece is provided with a first mounting concave hole matched with the first mould core (102), and the first mould core (102) is embedded in the first mounting concave hole;

the second mold (2) comprises a second mold core (205) and a second mold fixing piece (206) for fixing the second mold core (205), the second mold fixing piece is provided with a second mounting concave hole matched with the second mold core (205), and the second mold core (205) is embedded in the first mounting concave hole;

the first mold core (102) cooperates with the second mold core (205) to form a mold cavity (5) for molding a product.

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