CN210389941U

CN210389941U - Ejection mechanism of injection mold for thin-wall products

Info

Publication number: CN210389941U
Application number: CN201921069570.0U
Authority: CN
Inventors: 何来
Original assignee: Creative Plastic Industrial Suzhou Co ltd
Current assignee: Creative Plastic Industrial Suzhou Co ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-04-24
Anticipated expiration: 2029-07-10

Abstract

The utility model discloses an ejection mechanism of an injection mold for thin-walled products, which comprises an upper mold core, a lower mold core, a push plate, a ejector sleeve, an oblique ejector and an ejector plate, wherein the push plate, the upper mold core and the lower mold core enclose a cavity for forming products, and the ejector sleeve and the oblique ejector are arranged on the ejector plate; the oblique top includes oblique ejector pin, oblique top and knot position shaping inlay the needle, oblique top has relative glue position face and spigot surface, the lower mould benevolence is equipped with the working face of leading the face to one side and being located the face top of leading to one side, the working face includes first vertical plane and the vertical plane of second that is located first vertical plane below, the inside of oblique top is equipped with two bullet needle mounting grooves, all be equipped with bullet needle and reset spring in two bullet needle mounting grooves, the one end of two bullet needles all contacts with the inner flange face of product, the other end of two springs respectively with the vertical plane contact of first vertical plane and second. The utility model relates to a thin wall product injection mold's ejection mechanism, its is rational in infrastructure, has made things convenient for thin wall product ejecting, is favorable to improving the production efficiency of mould.

Description

Ejection mechanism of injection mold for thin-wall products

Technical Field

The utility model relates to a thin wall product injection mold's ejection mechanism.

Background

An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification. At present, when injection molds of some thin-wall products are used, the products are difficult to eject due to the fact that the products only have a circle of annular thin walls and the middle parts of the products do not have glue positions, and a proper ejection structure needs to be arranged to improve the production efficiency of the molds.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a thin wall product injection mold's ejection mechanism, its is rational in infrastructure, has made things convenient for thin wall product ejecting, is favorable to improving the production efficiency of mould.

In order to achieve the above object, the present invention provides an ejection mechanism of an injection mold for thin-walled products, comprising an upper mold core, a lower mold core, a push plate, a ejector sleeve, an inclined ejector and an ejector plate, wherein the push plate is arranged between the upper mold core and the lower mold core, and the push plate, the upper mold core and the lower mold core enclose a cavity for molding products; the ejector plate is arranged below the lower die core, the lower end of the ejector cylinder is connected to the ejector plate, the upper end of the ejector cylinder extends into the die cavity and corresponds to the bottom of a product, the lower end of the inclined top is connected to the ejector plate, and the upper end of the inclined top extends into the die cavity and corresponds to the inner side of the product; the inclined ejector comprises an inclined ejector rod, an inclined ejector head and a buckling position forming insert pin, the inclined ejector head is provided with a glue position surface and a guide surface which are opposite, the glue position surface faces to the inner edge surface of a product, the lower die core is provided with an inclined guide surface and an acting surface which is positioned above the inclined guide surface, the inclined guide surface is attached to the guide surface, and the acting surface comprises a first vertical plane, a second vertical plane which is positioned below the first vertical plane and a transition inclined plane which is connected between the first vertical plane and the second vertical plane; the guide surface is provided with a groove, a fixed block is arranged in the groove, the buckling forming insert needle is arranged in the inclined top head, one end of the buckling forming insert needle is connected with the fixed block, the other end of the buckling forming insert needle penetrates through the glue surface and extends into the cavity, two elastic needle mounting grooves communicated with the groove are arranged in the inclined top head, the two elastic needle mounting grooves are respectively positioned at the upper side and the lower side of the buckling forming insert needle, an elastic needle and a reset spring are respectively arranged in the two elastic needle mounting grooves, a retaining ring is arranged on the elastic needle, the reset spring is positioned at one side, away from the groove, of the retaining ring, one end of the reset spring is abutted against the retaining ring, the other end of the reset spring is abutted against the inner wall of the elastic needle mounting groove, one end of the elastic needle positioned at the upper side of the buckling forming insert needle penetrates through the inclined top head to be contacted with the inner edge surface of a product, and the other end of the elastic needle penetrates through the fixed block, and one end of the elastic needle, which is positioned on the lower side of the button position forming insert needle, penetrates through the inclined ejector head to be contacted with the inner edge surface of a product, and the other end of the elastic needle penetrates through the fixed block to be contacted with the second vertical plane.

Preferably, the end of the bullet needle away from the product is in a spherical crown shape.

Preferably, the return spring is sleeved outside the spring needle.

Preferably, the inclined ejector head and the fixed block are provided with sliding holes for the bullet needles to penetrate through.

The utility model discloses a theory of operation does: when the injection mold is opened, the product is driven to move upwards for a certain distance by the push plate to finish one-time ejection, then the ejector plate drives the ejector sleeve and the inclined ejector to move upwards, and the ejector sleeve and the inclined ejector eject the product together; in the process of ejecting a product in an inclined manner, the inclined ejector head is pushed upwards in an inclined manner along a certain angle under the guidance of an inclined guide surface of the lower die core, in the pushing process, the two elastic needles are pushed against the product under the action of the first vertical plane and the second vertical plane respectively and drive the product to move upwards, meanwhile, the reset spring is compressed until the two elastic needles are separated from the first vertical plane and the second vertical plane respectively, the two elastic needles are reset under the action of the elastic restoring force of the reset spring and separated from the product, the needle is inlaid in the buckling position for forming, the product is reversely buckled, and the product is ejected completely.

The utility model has the advantages that: the ejection mechanism of the injection mold for the thin-wall products is reasonable in structure, facilitates ejection of the thin-wall products, and is beneficial to improving production efficiency of the mold.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the middle push plate of the utility model when being ejected.

Fig. 3 is a schematic diagram of the middle lifter during mold closing of the present invention.

Fig. 4 is a schematic view of the lifter in the ejecting state.

Fig. 5 is a schematic diagram of the lifter of the present invention when the ejection is completed.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The utility model discloses the technical scheme who specifically implements is:

as shown in fig. 1 to 5, an ejection mechanism of an injection mold for a thin-walled product comprises an upper mold core, a lower mold core 1, a push plate 2, an ejector sleeve 3, an inclined ejector 4 and an ejector plate 5, wherein the push plate 2 is arranged between the upper mold core and the lower mold core 1, and the push plate 2, the upper mold core and the lower mold core 1 enclose a cavity for molding a product 6; the ejector plate 5 is arranged below the lower die core 1, the lower end of the ejector cylinder 3 is connected to the ejector plate 5, the upper end of the ejector cylinder 5 extends into the die cavity and corresponds to the bottom of the product 6, the lower end of the inclined top 4 is connected to the ejector plate 5, and the upper end of the inclined top 4 extends into the die cavity and corresponds to the inner side of the product 6; the lifter 4 comprises a lifter rod, a lifter head 41 and a buckling position forming insert pin 42, the lifter head 41 is provided with a glue position surface 411 and a guide surface 412 which are opposite, the glue position surface 411 faces to the inner edge surface of a product 6, the lower die core 1 is provided with an inclined guide surface 11 and an action surface positioned above the inclined guide surface 11, the inclined guide surface 11 is attached to the guide surface 412, and the action surface comprises a first vertical plane 12, a second vertical plane 13 positioned below the first vertical plane 12 and a transition inclined plane 14 connected between the first vertical plane 12 and the second vertical plane 13; the guide surface 412 is provided with a groove, a fixed block 7 is arranged in the groove, the buckling forming insert pin 42 is arranged inside the inclined top head 41, one end of the buckling forming insert pin 42 is connected with the fixed block 7, the other end of the buckling forming insert pin 42 penetrates through the glue level surface 411 and extends into the cavity, two elastic pin mounting grooves 413 communicated with the groove are arranged inside the inclined top head 41, the two elastic pin mounting grooves 413 are respectively positioned at the upper side and the lower side of the buckling forming insert pin 42, an elastic pin 8 and a reset spring 9 are respectively arranged in the two elastic pin mounting grooves 413, a retaining ring 81 is arranged on the elastic pin 8, the reset spring 9 is positioned at one side of the retaining ring 81 far away from the groove, one end of the reset spring 9 supports against the retaining ring 81, the other end of the reset spring 9 supports against the inner wall of the elastic pin mounting groove 413, one end of the elastic pin 8 positioned at the upper side of the buckling forming insert pin 42 penetrates through the inclined top head 41 and contacts with the inner edge surface of the product 6, the other end of the elastic needle 8 penetrates through the fixed block 7 to be in contact with the first vertical plane 12, one end of the elastic needle 8, which is positioned on the lower side of the button-forming insert 42, penetrates through the inclined top 41 to be in contact with the inner edge surface of the product 6, and the other end of the elastic needle 8 penetrates through the fixed block 7 to be in contact with the second vertical plane 13.

The end of the bullet needle 8 far away from the product 6 is in a spherical crown shape.

The return spring 9 is sleeved outside the elastic needle 8.

The inclined ejector 41 and the fixed block 7 are provided with sliding holes for the bullet needles 8 to penetrate through.

The utility model discloses a theory of operation does: when the injection mold is opened, the product 6 is driven to move upwards for a certain distance by the push plate 2 to finish one-time ejection, then the ejector plate 5 drives the ejector cylinder 3 and the inclined ejector 4 to move upwards, and the ejector cylinder 3 and the inclined ejector 4 eject the product 6 together; in the process of ejecting the product 6 by the lifter 4, the lifter head 41 is pushed upwards obliquely at a certain angle under the guidance of the oblique guide surface 11 of the lower die core 1, and in the pushing process, the two elastic needles 8 are pushed against the product 6 under the action of the first vertical plane 12 and the second vertical plane 13 respectively and drive the product 6 to move upwards, the return spring 9 is compressed at the same time, until the two elastic needles 8 are separated from the first vertical plane 12 and the second vertical plane 13 respectively, the two elastic needles 8 are reset under the action of the elastic restoring force of the return spring 9 and separated from the product 6, the buckling position forming insert 42 is separated from the product 6 and the product 6 is ejected completely.

The utility model has the advantages that: the ejection mechanism of the injection mold for the thin-wall products is reasonable in structure, facilitates ejection of the thin-wall products 6, and is beneficial to improvement of production efficiency of the mold.

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

Claims

1. The ejection mechanism of the injection mold for the thin-walled product is characterized by comprising an upper mold core, a lower mold core, a push plate, a ejector sleeve, an inclined ejector and an ejector plate, wherein the push plate is arranged between the upper mold core and the lower mold core, and a cavity for molding the product is defined by the push plate, the upper mold core and the lower mold core; the ejector plate is arranged below the lower die core, the lower end of the ejector cylinder is connected to the ejector plate, the upper end of the ejector cylinder extends into the die cavity and corresponds to the bottom of a product, the lower end of the inclined top is connected to the ejector plate, and the upper end of the inclined top extends into the die cavity and corresponds to the inner side of the product; the inclined ejector comprises an inclined ejector rod, an inclined ejector head and a buckling position forming insert pin, the inclined ejector head is provided with a glue position surface and a guide surface which are opposite, the glue position surface faces to the inner edge surface of a product, the lower die core is provided with an inclined guide surface and an acting surface which is positioned above the inclined guide surface, the inclined guide surface is attached to the guide surface, and the acting surface comprises a first vertical plane, a second vertical plane which is positioned below the first vertical plane and a transition inclined plane which is connected between the first vertical plane and the second vertical plane; the guide surface is provided with a groove, a fixed block is arranged in the groove, the buckling forming insert needle is arranged in the inclined top head, one end of the buckling forming insert needle is connected with the fixed block, the other end of the buckling forming insert needle penetrates through the glue surface and extends into the cavity, two elastic needle mounting grooves communicated with the groove are arranged in the inclined top head, the two elastic needle mounting grooves are respectively positioned at the upper side and the lower side of the buckling forming insert needle, an elastic needle and a reset spring are respectively arranged in the two elastic needle mounting grooves, a retaining ring is arranged on the elastic needle, the reset spring is positioned at one side, away from the groove, of the retaining ring, one end of the reset spring is abutted against the retaining ring, the other end of the reset spring is abutted against the inner wall of the elastic needle mounting groove, one end of the elastic needle positioned at the upper side of the buckling forming insert needle penetrates through the inclined top head to be contacted with the inner edge surface of a product, and the other end of the elastic needle penetrates through the fixed block, and one end of the elastic needle, which is positioned on the lower side of the button position forming insert needle, penetrates through the inclined ejector head to be contacted with the inner edge surface of a product, and the other end of the elastic needle penetrates through the fixed block to be contacted with the second vertical plane.

2. The ejection mechanism of the injection mold for thin-walled products as claimed in claim 1, wherein the end of the spring pin away from the products is spherical crown shaped.

3. The ejection mechanism of an injection mold for thin-walled products as claimed in claim 2, wherein the return spring is sleeved outside the pogo pin.

4. The ejection mechanism of the injection mold of the thin-walled product as claimed in claim 3, wherein the inclined ejector and the fixed block are provided with slide holes for the bullet needles to pass through.