CN209775442U

CN209775442U - mold capable of synchronously and reliably demolding

Info

Publication number: CN209775442U
Application number: CN201822225773.6U
Authority: CN
Inventors: 戴卫东
Original assignee: SHANGHAI YONGXING PLASTICS Co Ltd
Current assignee: SHANGHAI YONGXING PLASTICS Co Ltd
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2019-12-13
Anticipated expiration: 2028-12-28

Abstract

The utility model relates to a mould that can synchronous reliable drawing of patterns, including last mould and lower mould, it includes the top fixed plate that from the top down arranged in proper order to go up the mould, A board and last mould benevolence, the lower mould includes the bottom plate that from the bottom up arranged in proper order, B board and lower mould benevolence, it forms the die cavity of moulding plastics of processing injection product to go up the cooperation between mould benevolence and the lower mould benevolence, still be equipped with the thimble assembly who passes B board and lower mould benevolence and be used for jacking the injection product in the die cavity of moulding plastics below the B board, a serial communication port, thimble assembly includes the thimble board, and set up straight thimble and the oblique thimble on the thimble board, straight thimble is installed perpendicularly on the thimble board and is used for withstanding injection product lower part intermediate position, the articulated slider that can follow thimble board upper surface horizontal migration of pushing up of thimble board, the upper end is passed B board and lower. Compared with the prior art, the utility model discloses can realize the reliable and stable drawing of patterns to injection moulding product in step, whole device simple structure etc..

Description

Mold capable of synchronously and reliably demolding

Technical Field

The utility model belongs to the technical field of the mould is made, a mould that can synchronous reliable drawing of patterns is related to.

Background

For example, in order to ensure reliable separation of an injection product and a mold for injection products with cambered surfaces on the inner sides, such as air purifier front shell products, a straight ejection and inclined ejection mode is usually adopted to eject and demold the injection products. Because of the particularity of the shape of the injection molding product, the strokes of different ejector pins (such as an inclined ejector pin and a partial straight ejector pin) are different, in the existing molding die, an independent driving mechanism is generally adopted to respectively drive the straight ejector pin, the inclined ejector pin and the like with different strokes, so that the demolding of the injection molding product and the die can be ensured, the structure of the whole die is too fat due to excessive driving mechanisms, the matching of different ejection mechanisms is easy to make mistakes, and the ejection stability is difficult to ensure. According to the oblique ejection die disclosed in the chinese patent ZL201621417115.1, the mold opening direction core pulling and the oblique ejection of the product are achieved by arranging the straight movement position along the first direction, separating the oblique push rod assembly by using the independent second driving mechanism, the fixed mold assembly and the movable mold under the action of the external injection molding machine, and separating the movable mold from the bottom mold by driving of the first driving mechanism.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a mould that can reliably drawing of patterns in step in order to overcome the defect that above-mentioned prior art exists, injection moulding product when realizing the drawing of patterns.

The purpose of the utility model can be realized through the following technical scheme:

An injection mold capable of synchronously ejecting comprises an upper mold and a lower mold, wherein the upper mold comprises an upper fixing plate, an A plate and an upper mold core which are sequentially arranged from top to bottom, the lower die comprises a lower fixing plate, a B plate and a lower die core which are sequentially arranged from bottom to top, an injection molding cavity for processing an injection molding product is formed between the upper die core and the lower die core in a matching way, a thimble assembly which passes through the B plate and the lower mold core and is used for jacking an injection product in an injection molding cavity is also arranged below the B plate, the thimble assembly comprises a thimble plate, a straight thimble and an inclined thimble which are arranged on the thimble plate, wherein the straight ejector pin is vertically arranged on the ejector plate and is used for ejecting the middle position of the lower part of the injection molding product, the lower end of the inclined ejector pin is hinged with a sliding block which can horizontally move along the upper surface of the ejector pin plate, and the upper end of the inclined ejector pin penetrates through the B plate and the lower die core and abuts against the edge position of an injection molding product.

furthermore, the thimble plate on process and have along the horizontal slide, the installation can be followed it and made a round trip gliding in the slide the slider, the slider passes through the round pin hub rotation with the top thimble bottom of pushing up to one side and is connected.

Furthermore, a guide plate is fixedly arranged on the lower end face of the plate B, a guide inclined hole for the inclined ejector pin to penetrate through is formed in the guide plate, and the direction of the guide inclined hole is consistent with the ejection direction of the inclined ejector pin.

Furthermore, the oblique ejector pin include integrated into one piece's oblique ejector pin and oblique top, wherein, the bottom of oblique ejector pin articulates the slider, the top contact injection moulding product of oblique top.

Furthermore, the inclined ejector rod is fixedly connected with the inclined ejector head through threads.

Furthermore, the inclined ejector rod comprises an upper rod piece of which the top end is connected with the inclined ejector head and a lower rod piece of which the bottom end is jointed with the sliding block, the bottom end of the upper rod piece is sleeved on the lower rod piece, and a spring along the axial direction of the upper rod piece is arranged between the upper rod piece and the lower rod piece.

Still further preferably, the arrangement of the upper rod, the spring and the lower rod satisfies: when the ejector pin plate is reset to the initial state, the spring is in a stretching state;

When the ejector plate moves upwards to the top end, the spring is in a compressed state.

Furthermore, a splitter plate is arranged between the lower fixing plate and the plate B, a hot runner which is communicated with injection molding glue and an injection molding cavity is arranged in the splitter plate, and the ejector pin assembly is installed on the splitter plate.

Compared with the prior art, the utility model has the advantages of it is following:

(1) The ejector pin plate is provided with the sliding block and other structures, the inclined ejector pin and the straight ejector pin are integrated together and are driven by the same driving piece to move together, and the mold structure is greatly simplified while the ejection of an injection molding product is ensured.

(2) The split type arrangement mode is adopted for the structures such as the inclined ejector pin and the like which are easy to damage and replace, so that the installation and the replacement of the inclined ejector pin are facilitated.

(3) The inclined ejector rod of the inclined ejector pin is composed of an upper rod piece and a lower rod piece, the upper rod piece and the lower rod piece are mutually sleeved and form jacking allowance through a spring, and the cooperative jacking of all the ejector pins for the injection molding product is guaranteed.

Drawings

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

Fig. 2 is a schematic structural view of the angle ejector pin of the present invention;

The notation in the figure is:

1-upper fixing plate, 2-A plate, 3-upper die core, 4-injection molding product, 5-lower die core, 6-B plate, 7-thimble assembly, 71-inclined thimble, 72-straight thimble, 73-thimble plate, 74-slide block, 75-slide way, 76-inclined thimble, 77-upper rod piece, 78-lower rod piece, 79-spring, 8-splitter plate and 9-lower fixing plate.

Detailed Description

the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example 1

An injection mold capable of synchronously ejecting, please refer to fig. 1, comprising an upper mold and a lower mold, wherein the upper mold comprises an upper fixing plate 1, an a plate 2 and an upper mold core 3 which are sequentially arranged from top to bottom, the lower mold comprises a lower fixing plate 9, a B plate 6 and a lower mold core 5 which are sequentially arranged from bottom to top, an injection mold cavity for processing an injection product 4 is formed between the upper mold core 3 and the lower mold core 5 in a matching way, an ejector pin assembly 7 which penetrates through the B plate 6 and the lower mold core 5 and is used for ejecting the injection molding product 4 in the injection molding cavity is further arranged below the B plate 6, the ejector pin assembly 7 comprises an ejector pin plate 73, a straight ejector pin 72 and an inclined ejector pin 71 which are arranged on the ejector pin plate 73, wherein, straight ejector pins 72 are vertically installed on the ejector plate 73 and used for ejecting the middle position of the lower part of the injection product 4, the lower ends of the inclined ejector pins 71 are hinged with slide blocks 74 which can horizontally move along the upper surface of the ejector plate 73, and the upper ends of the inclined ejector pins pass through the B plate 6 and the lower mold core 5 and eject the edge position of the injection product 4.

referring to fig. 1 again, a horizontal slide way 75 is formed on the ejector plate 73, a slide block 74 capable of sliding back and forth along the slide way 75 is installed in the slide way 75, the slide block 74 is rotatably connected with the bottom end of the inclined ejector pin 71 through a pin shaft, a guide plate is fixedly installed on the lower end surface of the B plate 6, a guide inclined hole for the inclined ejector pin 71 to pass through is arranged on the guide plate, and the direction of the guide inclined hole is consistent with the ejection direction of the inclined ejector pin 71.

Referring to fig. 2, the inclined ejector pin 71 includes an integrally formed inclined ejector pin and an inclined ejector head 76, wherein a bottom end of the inclined ejector pin is hinged to the slider 74, a top end of the inclined ejector head 76 contacts the injection product 4, and the inclined ejector pin and the inclined ejector head 76 are fixedly connected by a thread. The inclined ejector pin 71 is formed by a split inclined ejector rod and an inclined ejector head 76, and can be conveniently installed, maintained and replaced.

referring to fig. 2 again, the angle rod includes an upper rod 77 with a top end connected to the angle head 76 and a lower rod 78 with a bottom end connected to the slider 74, the bottom end of the upper rod 77 is sleeved on the lower rod 78, a spring 79 is disposed between the upper rod 77 and the lower rod 78 along the axial direction thereof, and the spring 79 can cooperate with the stroke difference between the angle ejector pin 71 and the straight ejector pin 72 to construct the redundancy between the upper rod 77 and the lower rod 78. The arrangement of the upper rod 77, the spring 79 and the lower rod 78 satisfies: when the ejector plate 73 is reset to the initial state, the spring 79 is in a stretched state; when the ejector plate 73 moves upward to the top, the spring 79 is in a compressed state. In the process that the lower rod piece 78 is driven by the ejector plate 73 to move upwards together, the spring 79 firstly releases the stretching amount and resets to the initial state, in the process, the straight ejector pin 72 firstly ejects the part with deeper equal rib positions at the middle part of the front shell product away from the lower mold core 5, and along with the continuous rising of the ejector plate 73, the spring 79 is gradually compressed until the degree that the inclined ejector pin 71 ejects the corresponding part of the front shell product away from the lower mold core 5 is reached. After demolding, the ejector plate 73 is reset, the lower rod 78 is reset to the initial state, and the upper rod 77 ensures that the top end is fixedly attached to the top surface of the lower mold core 5 in the stretching state of the spring 79. The upper rod 77 and the lower rod 78 are guaranteed not to disengage during the whole process.

referring to fig. 1 again, a splitter plate 8 is disposed between the bottom plate 9 and the B plate 6, a hot runner for introducing injection molding compound and communicating with the back of the injection molding cavity is disposed in the splitter plate 8, and an ejector pin assembly 7 is mounted on the splitter plate 8. By using the back glue injection mode, the front side of the injection product 4 can be ensured not to form glue injection offset printing.

In the above embodiments, unless otherwise specified, they are intended to represent conventional structures or techniques for performing their functions in the art.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. A mould capable of synchronously and reliably demoulding comprises an upper mould and a lower mould, wherein the upper mould comprises an upper fixing plate, an A plate and an upper mould core which are sequentially arranged from top to bottom, the lower die comprises a lower fixing plate, a B plate and a lower die core which are sequentially arranged from bottom to top, an injection molding cavity for processing an injection molding product is formed between the upper die core and the lower die core in a matching way, a thimble assembly which passes through the B plate and the lower mold core and is used for jacking an injection product in an injection molding cavity is also arranged below the B plate, it is characterized in that the thimble assembly comprises a thimble plate, a straight thimble and an inclined thimble which are arranged on the thimble plate, wherein the straight ejector pin is vertically arranged on the ejector plate and is used for ejecting the middle position of the lower part of the injection molding product, the lower end of the inclined ejector pin is hinged with a sliding block which can horizontally move along the upper surface of the ejector pin plate, and the upper end of the inclined ejector pin penetrates through the B plate and the lower die core and abuts against the edge position of an injection molding product.

2. The mold according to claim 1, wherein the ejector plate is provided with a horizontal slide way, the slide way is internally provided with the slide block capable of sliding back and forth along the slide way, and the slide block is rotatably connected with the bottom end of the inclined ejector pin through a pin shaft.

3. The mold according to claim 1, wherein a guide plate is further fixedly mounted on the lower end surface of the B plate, and a guide inclined hole for the inclined ejector pin to pass through is disposed on the guide plate, and the direction of the guide inclined hole is consistent with the ejecting direction of the inclined ejector pin.

4. The mold according to claim 1, wherein the slanted ejecting pin comprises an integrally formed slanted ejecting rod and a slanted ejecting head, wherein the bottom end of the slanted ejecting rod is hinged to the slide block, and the top end of the slanted ejecting head contacts the injection molding product.

5. the mold according to claim 4, wherein the angle ejector rod and the angle ejector head are fixedly connected by screw threads.

6. The mold according to claim 4, wherein the angle ejector comprises an upper rod member with a top end connected to the angle ejector and a lower rod member with a bottom end connected to the slide block, the bottom end of the upper rod member is sleeved on the lower rod member, and a spring is arranged between the upper rod member and the lower rod member along the axial direction of the upper rod member and the lower rod member.

7. The mold according to claim 6, wherein the upper rod, the spring and the lower rod are arranged such that: when the ejector pin plate is reset to the initial state, the spring is in a stretching state;

8. The mold according to claim 1, wherein a splitter plate is disposed between the bottom plate and the B plate, a hot runner for injecting molding compound and connecting the injection cavity is disposed in the splitter plate, and the pin assembly is mounted on the splitter plate.