CN210679448U

CN210679448U - Double-color mold with secondary ejection mechanism

Info

Publication number: CN210679448U
Application number: CN201921377613.1U
Authority: CN
Inventors: 蔡钦钟
Original assignee: Guangdong Junsheng Mould Research Co ltd
Current assignee: Guangdong Junsheng Mould Research Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-06-05
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses a double-color mold with a secondary ejection mechanism, which comprises an upper template, a lower template, a bottom plate and an ejection mechanism; the ejection mechanism comprises an ejector sleeve, an inner ejector pin of the ejector sleeve, a first ejector plate and a second ejector plate, and the first ejector plate and the second ejector plate are used for moving towards the bottom end close to the lower template when the mold is opened; the first ejector plate is used for moving towards the bottom end close to the lower template relative to the second ejector plate when the mold is opened; the bottom end of the ejector sleeve is fixedly connected to the first ejector plate, and the top end of the ejector sleeve is used for extending into the forming cavity during die assembly; the bottom end of the inner needle of the ejector sleeve is fixedly connected with the second ejector plate; the top end of the inner needle of the ejector sleeve movably penetrates through the first ejector plate and movably penetrates through the ejector sleeve; the top end of the inner needle of the ejector sleeve is used for extending out of the top end of the ejector sleeve and extending into the forming cavity when the die is closed. Utility model can make progress simultaneously through an department section of thick bamboo and an department section of thick bamboo, with fashioned product and lower template top from, the relative department section of thick bamboo needle upward movement in this back department section of thick bamboo makes the product break away from with an department section of thick bamboo inner needle.

Description

Double-color mold with secondary ejection mechanism

Technical Field

The utility model relates to the technical field of mold, especially, relate to a double-color mold with secondary ejection mechanism.

Background

The double-color mold is a mold in which two plastic materials are injected on the same injection molding machine and are molded twice, but the product is only demoulded once. This molding process, also known as two-shot molding, is typically accomplished with a single mold and requires a specialized two-shot injection molding machine. The cover body and the cover of the product are made of the same material and different colors, the product can be smoothly formed only by using a double-color mold through twice injection molding, and the cover body and the cover are internally provided with the back-off parts, so that whether the product is smoothly demoulded or not is influenced by a correct die opening sequence. When demoulding, direct demoulding is selected, and the back-off is easy to damage.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a double-color mold with secondary ejection mechanism, it can make progress simultaneously through a department section of thick bamboo and an interior needle of department section of thick bamboo earlier, pushes up fashioned product and lower template from, and the relative department section of thick bamboo of department section of thick bamboo is interior needle upward movement afterwards, makes the product break away from with a department section of thick bamboo interior needle.

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

a double-color mold with a secondary ejection mechanism comprises an upper template, a lower template, a bottom plate and an ejection mechanism; the upper template, the lower template and the bottom plate are sequentially arranged from top to bottom; the upper template can move towards or away from the lower template to open or close the mold, and is used for being matched with the lower template to form a cavity when the mold is closed; the ejection mechanism comprises an ejector sleeve, an inner ejector pin of the ejector sleeve, a first ejector pin plate and a second ejector pin plate, and the first ejector pin plate and the second ejector pin plate are sequentially arranged between the bottom plate and the lower template from top to bottom; the first ejector pin plate and the second ejector pin plate are used for moving towards the bottom end close to the lower template when the mold is opened; the first ejector plate is used for moving towards the bottom end close to the lower template relative to the second ejector plate when the mold is opened; the bottom end of the ejector sleeve is fixedly connected to the first ejector plate, and the top end of the ejector sleeve is used for extending into the forming cavity during die assembly; the bottom end of the inner needle of the ejector sleeve is fixedly connected with a second ejector plate; the top end of the inner needle of the ejector sleeve movably penetrates through the first ejector plate and movably penetrates through the ejector sleeve; the top end of the inner needle of the ejector sleeve is used for extending out of the top end of the ejector sleeve and extending into the forming cavity when the die is closed.

Preferably, the double-color mold with the secondary ejection mechanism further comprises a driving mechanism, the driving mechanism comprises a first driving rod, a second driving rod, a limiting block and a first elastic component, and the first driving rod and the second driving rod extend along the height direction of the bottom plate; the first driving rod and the second driving rod are distributed at intervals in the length direction of the bottom plate; the bottom end of the first driving rod is fixedly connected to the bottom plate, and the top end of the first driving rod is formed into a first driving end; the top end of the second driving rod is fixedly connected to the first ejector plate, and the bottom end of the second driving rod is formed into a second driving end; one end of the limiting block is provided with a limiting groove, and the other end of the limiting block is fixedly connected with one end of the first elastic component; the other end of the first elastic component is fixedly connected with the second ejector plate; the first elastic part and the limiting groove extend along the length direction of the second ejector plate; the second driving end is used for being clamped in the limiting groove when the first ejector pin plate and the second ejector pin plate move simultaneously; the first driving end is used for abutting against the limiting block after the limiting block moves upwards so that the limiting block moves towards the position far away from the first driving end, and therefore the second driving end is separated from the limiting groove.

Preferably, a clamping hook is arranged on the second driving end, and the limiting groove is a through groove; the clamping hook is used for extending into the bottom end of the through groove and is clamped on the bottom end face, far away from the first driving end, of the through groove.

Preferably, the first driving end is provided with a protruding portion, and the protruding portion gradually inclines towards a direction close to the limiting block from top to bottom.

Preferably, a second elastic component is clamped between the lower template and the first ejector plate; the second elastic component is used for providing elastic stress for enabling the first ejector plate to move towards the position far away from the bottom end of the lower template.

Compared with the prior art, the beneficial effects of the utility model reside in that: it can make progress through the department section of thick bamboo simultaneously with the interior needle of department section of thick bamboo earlier, and the top is from fashioned product and lower template, and the needle of inlaying of so product periphery and lower template no longer contacts, and the relative department section of thick bamboo needle upward movement in the section of thick bamboo of department makes the product break away from with the department section of thick bamboo, because the shaping product is the plastic material, when department section of thick bamboo pushes up the product from department section of thick bamboo needle in, the product periphery has not inlayed the needle restriction, and the plastic product has certain deformation, therefore can avoid the back-off damage when breaking away from.

Drawings

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

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a cross-sectional view of another angle of the present invention.

In the figure: 10. mounting a template; 20. a lower template; 30. a base plate; 40. a second ejector plate; 50. a first ejector plate; 60. an elastic member; 70. a ejector sleeve; 80. an inner needle of the ejector sleeve; 91. a first drive lever; 911. a projection; 92. a second drive lever; 921. a second drive end; 93. and a limiting block.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1, 2 and 3, the two-color mold with the secondary ejection mechanism includes an upper mold plate 10, a lower mold plate 20, a bottom plate 30 and an ejection mechanism, wherein the upper mold plate 10, the lower mold plate 20 and the bottom plate 30 are sequentially arranged from top to bottom. Driven by a driving structure on the die body, the upper die plate 10 can move towards or away from the lower die plate 20 to open or close the die, and the upper die plate 10 is used for being matched with the lower die plate 20 to form a cavity when the die is closed.

The specific ejection mechanism comprises an ejector sleeve 70, an ejector sleeve inner needle 80, a first ejector plate 50 and a second ejector plate 40, wherein the first ejector plate 50 and the second ejector plate 40 are sequentially arranged between the bottom plate 30 and the lower template 20 from top to bottom. The first ejector plate 50 and the second ejector plate 40 can be simultaneously moved toward the lower end near the lower die plate 20 at the time of opening the dies. In addition, the first ejector plate 50 is also moved toward the lower end of the lower die plate 20 relative to the second ejector plate 40 during the mold opening.

In addition, the bottom end of the ejector sleeve 70 is fixedly connected to the first ejector plate 50, and the top end of the ejector sleeve 70 is used for extending into the molding cavity during mold closing. The bottom end of the inner cylinder needle 80 is fixedly connected with the second ejector plate 40; the top end of the inner driver cylinder needle 80 movably penetrates through the first ejector plate 50 and movably penetrates through the driver cylinder 70; the top end of the ejector pin 80 is used to extend out from the top end of the ejector 70 into the molding cavity when the mold is closed.

On the basis of the structure, use the utility model discloses a double-color mold with secondary ejection mechanism, above-mentioned cope match-plate pattern 10, lower bolster 20, bottom plate 30 and ejection mechanism all can install on the organism of mould, and drive structure on the organism of mould can drive cope match-plate pattern 10 and move down to lower bolster 20, and during the compound die, the product is the shaping in the die cavity. During the shaping, department section of thick bamboo inner needle 80 stretches out in the top of department section of thick bamboo 70, and the plastic can wrap up in department section of thick bamboo inner needle 80, and the fashioned concrete process is the same with the shaping process of current double-colored mould, does not belong to the technical content that this application will protect, and the technical staff in the art can know from prior art, and it is no longer detailed description here.

When the mold is opened, the driving structure on the mold body can simultaneously drive the first ejector plate 50 and the second ejector plate 40 to move upwards simultaneously, i.e. the ejector sleeve 70 and the ejector sleeve inner needle 80 move upwards simultaneously, so that the formed product is ejected away from the lower mold plate 20, and the periphery of the product is not contacted with the insert needle of the lower mold plate 20 any more. And then the first ejector plate 50 is driven by the driving structure on the die body to move towards the bottom end close to the lower die plate 20 relative to the first ejector plate 50, namely the ejector sleeve 70 moves upwards relative to the ejector sleeve inner needle 80, so that the product is separated from the ejector sleeve inner needle 80.

Specifically, in this embodiment, the two-color mold with the secondary ejection mechanism further includes a driving mechanism, the driving mechanism includes a first driving rod 91, a second driving rod 92, a limiting block 93, and a first elastic component 60, the first driving rod 91 and the second driving rod 92 both extend along the height direction of the bottom plate 30, and the first driving rod 91 and the second driving rod 92 are distributed at intervals in the length direction of the bottom plate 30. In addition, the bottom end of the first driving rod 91 is fixed to the bottom plate 30, and the top end of the first driving rod 91 is formed as a first driving end. Correspondingly, the top end of the second driving rod 92 is fixedly connected to the second ejector plate 40, and the bottom end of the second driving rod 92 is formed as a second driving end 921. One end of the limiting block 93 is provided with a limiting groove, and the other end of the limiting block 93 is fixedly connected with one end of the first elastic component 60; the other end of the first elastic component 60 is fixedly connected with the second ejector plate 40; the first elastic member 60 and the stopper groove both extend in the length direction of the second ejector plate 40; the second driving end 921 is used for being clamped in the limiting groove when the second ejector plate 40 and the second ejector plate 40 move simultaneously; the first driving end is used for abutting against the limiting block 93 after the limiting block 93 moves upwards so that the limiting block 93 moves towards the position far away from the first driving end, and therefore the second driving end 921 is separated from the limiting groove.

When the die is closed, the second ejector plate 40 and the bottom plate 30 are all in a fit state, at this time, the first driving end of the first driving rod 91 is abutted to the end portion of the limit block 93 far away from the second driving rod 92, meanwhile, the second driving end 921 of the second driving rod 92 is clamped in the limit groove, when the die is opened, the driving structure on the bottom plate 30 can jack up the second ejector plate 40, at this time, the second ejector plate 40 is connected with the second ejector plate 40 through the second driving end 921, so that the upward movement of the second ejector plate 40 can drive the second ejector plate 40 to move upward simultaneously, and in the process of the upward movement of the second ejector plate 40, the limit block 93 on the second ejector plate 40 can move upward along with the second ejector plate 40, when the limit block 93 moves to the first driving end at the top end of the first driving rod 91, the first driving end can gradually jack the limit block 93 toward the end far away from the first driving end, the first elastic member 60 is compressed, and in the process that the limit block 93 is far away from the first driving end, the second driving end 921 can be separated from the limit groove, that is, the second ejector plate 40 and the second ejector plate 40 are separated, and thereafter, the driving structure on the base plate 30 can continuously eject the second ejector plate 40, and the second ejector plate 40 can move upward relative to the second ejector plate 40, so that the relative movement of the driver cylinder 70 and the driver cylinder inner needle 80 is realized, and the secondary demolding operation is completed.

Of course, the above-described sequential movement of the first ejector plate 50 and the second ejector plate 40 may be achieved by two independent drive mechanisms, respectively. It should be noted that the driving mechanism in the present embodiment may be a driving mechanism commonly used in a mold in the prior art, such as an air cylinder or an oil cylinder.

Further, a hook is arranged on the second driving end 921, and the limiting groove is a through groove; the clamping hook is used for extending into the bottom end of the through groove and is clamped on the bottom end face, far away from the first driving end, of the through groove. On the basis of the structure, in addition, when resetting, the second ejector pin plate 40 can move down under the drive of the drive structure of the bottom plate 30, and the limiting block 93 resets under the action of the first elastic component 60 at the moment, moves towards being close to the first drive end, the second ejector pin plate 40 moves down mutually and can drive the second drive end 921 to move down, the second drive end 921 can stretch into the limiting groove again, the clamping is connected to the limiting groove, and afterwards, the second ejector pin plate 40 and the second ejector pin plate 40 can move down together to complete resetting. On the structure basis that the groove is led to spacing trench, the trip of second drive end 921 alright in the downstream process, stretch into the bottom that leads to the groove rather than the bottom joint, stable in structure.

Further, the first driving end in this embodiment is provided with a protruding portion 911, and the protruding portion 911 gradually inclines from top to bottom toward the direction close to the limiting block 93. Namely, after the limiting block 93 moves upwards, the limiting block can be abutted against the convex part 911 of the first driving end, and the convex part 911 can push the limiting block 93 away from the first driving end, so that the second driving end 921 is separated from the limiting groove. The protruding portion 911 gradually inclines from top to bottom towards the position close to the limit block 93, so that the limit block 93 moves towards the position far away from the first driving end and continues to move upwards, and the inclined state of the protruding portion 911 can guide the limit block 93 to gradually reset under the action of the first elastic component 60, so that the resetting of the second ejector plate 40 and the second ejector plate 40 at the later stage is facilitated.

Preferably, a second elastic member 60 is clamped between the lower plate 20 and the first ejector plate 50, the second elastic member 60 is used for providing an elastic stress for moving the first ejector plate 50 away from the bottom end of the lower plate 20, so that after the mold is opened, the first ejector plate 50 and the second ejector plate 40 move towards the lower plate 20 and the first ejector plate 50 moves relative to the second ejector plate 40, the second elastic member 60 can be compressed, and after the product is separated, the second elastic member 60 can be reset to provide the elastic stress for moving the first ejector plate 50 downwards, thereby facilitating the resetting of the second ejector plate 40.

It should be noted that, the first elastic member 60 and the second elastic member 60 may be implemented by springs. Specifically, a guide rod can be arranged between the bottom plate 30 and the lower template 20, the lower template 20 is installed at one end of the guide rod, the other end of the guide rod is installed on the floor, and the spring is installed between the lower template 20 and sleeved on the guide rod.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. A double-color mold with a secondary ejection mechanism is characterized by comprising an upper template, a lower template, a bottom plate and an ejection mechanism; the upper template, the lower template and the bottom plate are sequentially arranged from top to bottom; the upper template can move towards or away from the lower template to open or close the mold, and is used for being matched with the lower template to form a cavity when the mold is closed; the ejection mechanism comprises an ejector sleeve, an inner ejector pin of the ejector sleeve, a first ejector pin plate and a second ejector pin plate, and the first ejector pin plate and the second ejector pin plate are sequentially arranged between the bottom plate and the lower template from top to bottom; the first ejector pin plate and the second ejector pin plate are used for moving towards the bottom end close to the lower template when the mold is opened; the first ejector plate is used for moving towards the bottom end close to the lower template relative to the second ejector plate when the mold is opened; the bottom end of the ejector sleeve is fixedly connected to the first ejector plate, and the top end of the ejector sleeve is used for extending into the forming cavity during die assembly; the bottom end of the inner needle of the ejector sleeve is fixedly connected with a second ejector plate; the top end of the inner needle of the ejector sleeve movably penetrates through the first ejector plate and movably penetrates through the ejector sleeve; the top end of the inner needle of the ejector sleeve is used for extending out of the top end of the ejector sleeve and extending into the forming cavity when the die is closed.

2. The two-color mold with secondary ejection mechanism according to claim 1, further comprising a driving mechanism, wherein the driving mechanism comprises a first driving rod, a second driving rod, a stopper and a first elastic member, and both the first driving rod and the second driving rod extend along the height direction of the bottom plate; the first driving rod and the second driving rod are distributed at intervals in the length direction of the bottom plate; the bottom end of the first driving rod is fixedly connected to the bottom plate, and the top end of the first driving rod is formed into a first driving end; the top end of the second driving rod is fixedly connected to the first ejector plate, and the bottom end of the second driving rod is formed into a second driving end; one end of the limiting block is provided with a limiting groove, and the other end of the limiting block is fixedly connected with one end of the first elastic component; the other end of the first elastic component is fixedly connected with the second ejector plate; the first elastic part and the limiting groove extend along the length direction of the second ejector plate; the second driving end is used for being clamped in the limiting groove when the first ejector pin plate and the second ejector pin plate move simultaneously; the first driving end is used for abutting against the limiting block after the limiting block moves upwards so that the limiting block moves towards the position far away from the first driving end, and therefore the second driving end is separated from the limiting groove.

3. The two-color mold with the secondary ejection mechanism according to claim 2, wherein the second driving end is provided with a hook, and the limiting groove is a through groove; the clamping hook is used for extending into the bottom end of the through groove and is clamped on the bottom end face, far away from the first driving end, of the through groove.

4. The bi-color mold with the secondary ejection mechanism according to claim 2, wherein the first driving end is provided with a protrusion, and the protrusion is gradually inclined from top to bottom toward the direction close to the limiting block.

5. The double-color mold with the secondary ejection mechanism according to claim 2, wherein a second elastic member is sandwiched between the lower mold plate and the first ejector plate; the second elastic component is used for providing elastic stress for enabling the first ejector plate to move towards the position far away from the bottom end of the lower template.