CN113276343A

CN113276343A - Double-shot male mold and double-shot injection mold

Info

Publication number: CN113276343A
Application number: CN202110672970.6A
Authority: CN
Inventors: 侯丽丽
Original assignee: Shengmei Precision Industrial Kunshan Co Ltd
Current assignee: Shengmei Precision Industrial Kunshan Co Ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-08-20

Abstract

The invention discloses a double-color injection molding male die, which comprises a male die main body and a ejector sleeve arranged on the male die main body in a penetrating way; a actuating mechanism for making the relative public mould main part of department section of thick bamboo remove along first direction, actuating mechanism is including can winding a rotation axis pivoted rotation main part, can follow first direction first ejector pin and second ejector pin that remove, and first ejector pin is connected with the department section of thick bamboo, and first ejector pin is contradicted with the rotation main part through first contact, and the second ejector pin is contradicted with the rotation main part through the second contact, and first contact and second contact are located the both sides of rotation axis respectively. The first female die is provided with a first ejector block matched with the second ejector rod, and the second female die is provided with a second ejector block matched with the first ejector rod; when the male die and the first female die are matched, the ejector sleeve can enter the product; and the ejector sleeve is separated from the product when the male die and the second female die are assembled. The double-color injection mold realizes reciprocating motion along a first direction by utilizing the driving mechanism, thereby realizing double-color injection molding.

Description

Double-shot male mold and double-shot injection mold

Technical Field

The invention relates to the field of injection molding, in particular to a double-color injection molding male die and a double-color injection molding die containing the same.

Background

When a product needs double-color injection molding, the double-color injection molding is divided into primary glue injection molding and secondary glue injection molding, namely, the product is subjected to primary glue injection molding and then secondary glue injection molding. Therefore, when the product is subjected to primary glue injection molding, the injection molding area is reserved when the secondary glue injection molding is needed, and the primary glue injection molding of the secondary glue injection molding area is avoided. And when secondary glue injection molding is carried out, secondary glue injection molding is carried out on the secondary glue injection molding area, so that a product is formed by double-shot injection molding.

However, in the existing double-color injection mold, the technical scheme for distinguishing the primary glue injection region and the secondary glue injection region of the product is complex, correspondingly, the operation of the worker during double-color injection is complex, the operation time is long, and the operation difficulty is high, so that the work efficiency is low. Therefore, it is necessary to improve the double-shot injection mold, so that the structure is simpler and the operation is more convenient.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the invention provides a double-color injection molding male die and a double-color injection molding die containing the same.

A double-color injection molding male die comprises a male die main body and a ejector sleeve arranged on the male die main body in a penetrating manner; public mould is still including being used for making department's section of thick bamboo is relative public mould main part is along the actuating mechanism of first direction removal, actuating mechanism is including can winding a rotation axis pivoted rotation main part, can follow first direction removal's first ejector pin and second ejector pin, first ejector pin with department's section of thick bamboo is connected, first ejector pin through first contact with rotate the main part and contradict, the second ejector pin through the second contact with rotate the main part and contradict, first contact with the second contact is located respectively the both sides of rotation axis.

A double-color injection mold comprises the male mold, a first female mold and a second female mold, wherein the first female mold is provided with a first ejector block matched with a second ejector rod, and the second female mold is provided with a second ejector block matched with the first ejector rod;

the male die and the first female die are assembled to form a first color cavity for molding a primary color adhesive of a product, and the ejector sleeve can enter the product; and the male die and the second female die are matched to form a second color cavity for molding secondary color glue of a product, and the ejector sleeve is separated from the product.

Furthermore, the male die main body of the male die comprises a male die core for forming the first color cavity or the second color cavity, the number of the first ejector rods and the number of the second ejector rods are respectively two, the two first ejector rods are located on two sides of the male die core, and the two second ejector rods are located on two sides of the first ejector rods.

Further, the male die main body further comprises a thimble penetrating through the male die core, the ejector sleeve and the first ejector rod are fixed on the fixing plate, a pressing plate is fixedly arranged below the fixing plate, the ejector sleeve, the fixing plate and the pressing plate are sleeved on the thimble, and the first contact is abutted to the pressing plate.

Further, the first contact and the second contact are both end faces of the rotating body in the first direction, and the position of the first contact is higher than that of the second contact.

Further, the distance of the second top block extending out of the end face of the second female die is larger than the distance of the first top block extending out of the end face of the first female die and exceeds the thickness of the product.

Further, the male die further comprises a pillow plate, and the rotating shaft penetrates through the rotating main body and is fixed on the pillow plate.

Furthermore, wear-resisting blocks are respectively arranged on two sides of the rotating main body, the rotating shaft penetrates through the wear-resisting blocks, and the wear-resisting blocks are fixed on the pillow plate.

Further, the rotating main body is made of high-temperature-resistant materials.

Further, the male die further comprises a rear plate, and the pillow plate is fixedly arranged on the rear plate.

The invention has the following beneficial effects:

this public mould of double-colored moulding plastics has set up actuating mechanism, mainly includes and rotates the main part, can promote department's section of thick bamboo along first direction reciprocating motion when making it carry out the compound die with the master model.

Specifically, in this double-shot injection mold, when first master model with the public mould compound die, first kicking block contradicts the second ejector pin, and the second ejector pin promotes the first contact of rotation main part for the rotation main part rotates around the rotation axis, will rotate the second contact of main part along first direction upward movement, and promote clamp plate upward movement, drive the vertical upward movement of department section of thick bamboo and stretch into the product until the terminal surface of department section of thick bamboo, when avoiding carrying out primary color glue and moulding plastics, primary color glue gets into the region that secondary color glue was moulded plastics, and the region of moulding plastics is reserved for following secondary color glue is moulded plastics.

When the second female die and the male die are closed, the second ejector block abuts against the first ejector rod, the first ejector rod pushes the pressing plate to move downwards, the pressing plate pushes the second contact of the rotating body to move downwards so that the rotating body rotates, the second contact of the rotating body descends, the first contact faces upwards, the ejector sleeve descends to the ejector sleeve to separate from the product, namely, the end face of the ejector sleeve stretches out of the secondary color glue injection molding area of the product, and the second female die can perform secondary color glue injection molding on the product.

The double-shot injection mold has the advantages that the structure of the area for controlling the secondary color glue injection molding is simple, the operation is convenient and effective, the operation steps of workers can be reduced, the operation difficulty is reduced, and the work efficiency is improved.

In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a two-shot injection mold according to an embodiment of the present invention when the two-shot injection mold is closed;

FIG. 2 is an enlarged view of a portion of the area A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of a portion of the invention in the area B of FIG. 1;

FIG. 4 is a schematic view of a rotating body in an embodiment of the present invention;

FIG. 5 is another schematic view of a rotating body in an embodiment of the present invention;

fig. 6 is a schematic illustration of a product in an embodiment of the invention.

Reference numerals of the above figures: a first male mold-11; a second male mold-12; a core insert-101; a thimble-102; a barrel-103; a fixed plate-104; a platen-105; pillow plate-106; a back plate-107; a first ejector rod-13; a second ejector rod-14; a rotating body-15; a first contact-151; a second contact-152; a rotating shaft-16; -a movement block-108; -17 a wear block;

a first master mold-21; primary rubber master mold core-210; a first top block-211;

a second master mold-22; secondary rubber female mold core-220; a second top block-221;

product-3; primary color glue injection molding area-31; secondary color glue injection molding area-32.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

The present invention will be described in detail below with reference to the accompanying drawings and examples.

The double-color injection molding male die comprises a male die main body and a ejector sleeve 103 which is arranged on the male die main body in a penetrating way; the male die further comprises a driving mechanism for enabling the ejector sleeve 103 to move along a first direction relative to the male die body, the driving mechanism comprises a rotating body 15 capable of rotating around a rotating shaft 16, a first ejector rod 13 and a second ejector rod 14 capable of moving along the first direction, the first ejector rod 13 is connected with the ejector sleeve 103, the first ejector rod 13 is abutted against the rotating body 15 through a first contact 151, the second ejector rod 14 is abutted against the rotating body 15 through a second contact 152, and the first contact 151 and the second contact 155 are respectively located on two sides of the rotating shaft 16.

As shown in FIG. 1, the two-shot mold comprises the male mold, the first female mold 21 and the second female mold 22 as described above.

The first mother die 21 has a first top block 211 to be fitted with the second lift pin 14, and the second mother die 22 has a second top block 221 to be fitted with the first lift pin 13.

The male die and the first female die 21 are matched to form a first color cavity for molding primary color glue of a product 3, and the ejector 103 can enter the product 3; the male die and the second female die 22 are matched to form a second color cavity for molding secondary color glue of the product 3, and the ejector 103 is separated from the product 3.

The male die main body of the male die comprises a male die core 101 for forming the first color cavity or the second color cavity and a thimble 102 penetrating through the male die core 101. Ejector pins 102 are movable in a first direction for ejecting product 3.

The first ejector rods 13, the second ejector rods 14 and the rotating body 15 are respectively provided with two, the two first ejector rods 13 are positioned on two sides of the core insert 101, and the two second ejector rods 14 are positioned on two sides of the first ejector rods 13. The two rotating bodies 15 are provided to push the cartridge more evenly.

The ejector sleeve 103 is sleeved on the thimble 102, the bottom end of the ejector sleeve 103 and the bottom of the first ejector rod 13 are fixed on a fixing plate 104, and a pressing plate 105 is fixedly arranged below the fixing plate 104. The fixing plate 104 and the pressing plate 105 are also sleeved on the thimble 102.

The bottom of department's section of thick bamboo 103 and the bottom of first ejector pin 13 all set up the step portion, inlay through the step portion and establish in fixed plate 104. The pressing plate 105 is fixedly connected with the fixing plate 104, so that the pressing plate 105 and the fixing plate 104 drive the first push rod 13 and the ejector sleeve 103 to move up and down along the thimble 102.

The male mold further comprises a pillow plate 106, and the pillow plate 106 is arranged below the male mold core 101. The rotating shaft 16 is inserted through the rotating body 15, and both ends of the rotating shaft 16 are fixed to the pillow plates 106. The rotating body 15 is capable of rotating about the rotation axis 16.

In addition, the male die further comprises a rear plate 107, and the pillow plate 106 is fixedly arranged on the rear plate 107. The bottom end of the ejector pin 102 is connected with a moving block 108, the moving block 108 is movably embedded in the rear plate 107, and the moving block 108 can drive the ejector pin 102 to move in the vertical direction, so that the ejector pin 102 can eject the molded product 3 after the secondary color glue is injection molded and the second female die 22 and the male die are opened.

In this embodiment, the rotating body 15 has a first contact 151 and a second contact 152 on both sides of the rotating shaft 16, the first contact 151 abuts against the pressure plate 105, and the second contact 152 abuts against the second plunger 14.

In the present embodiment, as shown in fig. 4, the rotating body 15 is configured substantially as a rectangular parallelepiped, but the top surface of the rectangular parallelepiped has a height difference, including a relatively low first contact 151 and a relatively high second contact 152. I.e. the first contact 151 is located higher than the second contact 152, the first contact 151 can push the pressing plate 105 and the fixing plate 104 until the sleeve 103 moves upward to make the end surface of the sleeve extend into the product 3.

One end of the first top block 211 is fixed to the first female die 21, and the other end thereof protrudes from the end surface of the first female die 21. One end of the second top block 221 is fixed to the second mother die 22, and the other end thereof protrudes from the end face of the second mother die 22. In addition, the distance that the first top block 211 protrudes beyond the end face of the first mother die 21 is smaller than the distance that the second top block 221 protrudes beyond the end face of the second mother die 22.

Therefore, when the first female die 21 and the first male die 11 or 12 are closed, the rotating body 15 is in a horizontal position, and the ejector 103 can be lifted into the product by the portion of the first contact 151 higher than the second contact 152. When the second female die 22 and the first male die 11 or the first male die 12 are closed, since the length of the second ejector block 221 is greater than that of the first ejector block 211, the second ejector block 221 presses the first contact 151 of the rotating body 15 downward, and the first contact 151 of the rotating body 15 is lower than the second contact 152 in the vertical direction, so that the ejector cylinder 103 can be completely separated from the product.

The first female mold 21 has a primary rubber female mold core 210, and the second female mold 22 has a secondary rubber female mold core 220.

As shown in fig. 1 and 2, when the first female mold 21 and the first

male mold

11 or 12 are closed, the primary color rubber female mold core and the male mold core 101 form a first color cavity, and the first color cavity is used for molding the primary color rubber of the product 3. The first ejector block 211 is abutted against the second ejector rod 14, and the ejector sleeve 103 rises under the action of the first ejector block 211 until the ejector sleeve 103 abuts against the secondary color glue injection molding area 32 of the product. When product 3 carries out the primary color glue and moulds plastics, department's section of thick bamboo 103 terminal surface can stretch into the regional 32 of the secondary color glue injection moulding of product 3, avoids the primary color glue to get into the regional 32 of the secondary color glue injection moulding, reserves the regional 32 of the secondary color glue injection moulding in advance for the secondary color glue injection moulding that follows.

As shown in fig. 1 and 3, when the second female mold 22 and the first

male mold

12 or 11 are closed, the secondary rubber female mold insert 220 and the male mold insert 101 form a second color cavity, and the second color cavity is used for molding the secondary color rubber of the product 3. The second ejector block 221 is abutted against the first ejector rod 13, the ejector sleeve 103 descends under the action of the second ejector block 221 until the ejector sleeve 103 is separated from the product 3 and is at least flush with the end face of the ejector pin 102, that is, the end face of the ejector sleeve 103 extends out of the secondary color glue injection molding area 32 of the product, so that the second master mold 22 can perform secondary color glue injection molding on the product 3.

Therefore, the double-color injection mold is simple in structure, convenient and effective, and can reduce the operation steps of workers, reduce the operation difficulty and improve the work efficiency.

As shown in fig. 5, in order to prevent the rotating body 15 from being damaged, wear-resistant blocks 17 are respectively disposed on two sides of the rotating body 15, the rotating shaft 16 penetrates through the wear-resistant blocks 17, and the wear-resistant blocks 17 are fixed on the pillow plate 106. The rotating body 15 and the wear-resistant block 17 are made of high-temperature-resistant materials.

As shown in fig. 1 and 6, the end surface of the ejector sleeve 103 in the two-shot injection mold is the area 32 of the product requiring the secondary injection molding. In the present embodiment, the ejector sleeve 103 is configured as a circular ring shape sleeved on the outer periphery of the thimble 102, but in other embodiments, the end surface of the ejector sleeve 103 may be configured as other shapes suitable for secondary injection molding of products. Therefore, the shape of the end surface of the cartridge 103 is not limited in the present invention as long as the end surface of the cartridge 103 is configured in the shape of the area 32 of the secondary injection molding.

This double-colored injection mold makes through first kicking block 211, second kicking block 221 and rotates main part 15 and rotate to the realization goes up and down to the department's section of thick bamboo 103, controls the area 32 that once look glued and moulds plastics 31 and the secondary look glues through department's section of thick bamboo 103 again. In particular, in the present embodiment, the end surface of the ejector pin 102 is located below the product 3.

Specifically, the working principle of the two-color injection mold will be described in detail below.

The two-shot injection mold comprises a first male mold 11 and a first male mold 12 which are identical. The first female mold 21 and the second female mold 22 are arranged side by side, and the first male mold 11 and the second male mold 12 are arranged side by side on a turntable (not shown). In addition, the turntable is fixedly connected with the rear plate 107. The rotary table is used for driving the first male die 11 and the first male die 12 to rotate. The first male mold 11 and the first male mold 12 are displaced by the rotation of the turntable, and are clamped to the first female mold 21 and the second female mold 22, respectively. Therefore, the first female die 21 and the second female die 22 can respectively have a male die corresponding to the male dies, so that primary color glue injection and secondary color glue injection can be simultaneously carried out, and the processing efficiency is improved.

The first female die 21 and the first male die 11 are matched, the first ejector block 211 abuts against the second ejector rod 14, and the second ejector rod 14 pushes the rotating main body 15, so that the rotating main body 15 rotates to a horizontal position. At this time, the height of the first contact 151 in the vertical direction is higher than that of the second contact 152, so that the first contact 151 pushes the pressing plate 105 upward to drive the ejector 103 to vertically move upward until the end surface of the ejector 103 extends into the product 3. At this time, the primary color glue injection molding is performed on the primary color glue injection molding area of the product 3. Meanwhile, the second female die 22 and the second male die 12 are closed, and the other product is subjected to secondary color glue injection molding.

And after the mold opening is finished, the turntable drives the first male mold 11 and the second male mold 12 to rotate, so that the second female mold 22 corresponds to the first male mold 11, and the first female mold 21 corresponds to the second male mold 12.

The second female die 22 and the first male die 11 are matched, the second ejector block 221 abuts against the first ejector rod 13, the first ejector rod 13 pushes the pressing plate 105 to move downwards, the pressing plate 105 pushes the first contact 151 of the rotating body 15 to move downwards so that the rotating body 15 rotates, the first contact 151 of the rotating body is lowered, the second contact 152 is upward, and the driver barrel 103 is lowered to the driver barrel 103 along with the pressing plate 105 to separate from a product. At this time, the secondary color glue injection molding is performed on the secondary color glue injection molding area of the product 3. Meanwhile, the first female die 21 and the second male die 12 are matched, and the other product is subjected to color glue injection molding once.

The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. The double-color injection molding male die is characterized by comprising a male die main body and a ejector sleeve arranged on the male die main body in a penetrating manner; public mould is still including being used for making department's section of thick bamboo is relative public mould main part is along the actuating mechanism of first direction removal, actuating mechanism is including can winding a rotation axis pivoted rotation main part, can follow first direction removal's first ejector pin and second ejector pin, first ejector pin with department's section of thick bamboo is connected, first ejector pin through first contact with rotate the main part and contradict, the second ejector pin through the second contact with rotate the main part and contradict, first contact with the second contact is located respectively the both sides of rotation axis.

2. A two-color injection mold comprising the male mold of claim 1, a first female mold having a first ejector cooperating with the second ejector pin, and a second female mold having a second ejector cooperating with the first ejector pin;

3. The double-color injection mold according to claim 2, wherein the male mold body of the male mold comprises a male mold core for forming the first color cavity or the second color cavity, the first ejector pins, the second ejector pins and the rotating body are respectively provided with two, the two first ejector pins are located on two sides of the male mold core, and the two second ejector pins are located on two sides of the first ejector pins.

4. The two-color injection mold according to claim 3, wherein the male mold body further comprises a thimble penetrating through the male mold core, the ejector sleeve and the first ejector rod are fixed on a fixing plate, a pressing plate is further fixedly arranged below the fixing plate, the ejector sleeve, the fixing plate and the pressing plate are sleeved on the thimble, and the first contact is abutted against the pressing plate.

5. The two-color injection mold according to claim 4, wherein the first contact point and the second contact point are both end faces of the rotating body in the first direction, and the position of the first contact point is higher than the position of the second contact point.

6. The two-shot injection mold according to claim 5, wherein the second top piece protrudes beyond the end face of the second master mold by a distance greater than the distance that the first top piece protrudes beyond the end face of the first master mold and exceeds the thickness of the product.

7. The bi-color injection mold of claim 6, wherein the male mold further comprises a pillow plate, and the rotating shaft passes through the rotating body and is fixed on the pillow plate.

8. The bi-color injection mold according to claim 7, wherein the rotating body is provided with wear-resistant blocks at two sides thereof, the rotating shaft penetrates through the wear-resistant blocks, and the wear-resistant blocks are fixed on the pillow plate.

9. The bi-color injection mold of claim 8 wherein the rotating body is a high temperature resistant material.

10. The dual-color injection mold of claim 9, wherein the male mold further comprises a back plate, the pillow plate being fixedly disposed on the back plate.