CN219381469U

CN219381469U - Injection mold for preventing mold sticking

Info

Publication number: CN219381469U
Application number: CN202320810503.XU
Authority: CN
Inventors: 聂甲治; 彭杰光; 陈天森; 刘泉
Original assignee: Foshan Beiqi Mould Technology Co ltd
Current assignee: Foshan Beiqi Mould Technology Co ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-07-21
Anticipated expiration: 2033-04-13

Abstract

The utility model discloses an injection mold for sticking prevention of a mold, which comprises a left mold base, a first ejection group, a right mold base and a second ejection component, wherein positioning columns are arranged at corners of the right side of the left mold base, the first ejection component comprises a U-shaped rod arranged on the left side of the left mold base and a cylinder arranged on the left side of the U-shaped rod, the right mold base is in sliding connection with the positioning columns, and the second ejection component comprises a first annular plate arranged on the right side of the right mold base, a driving motor arranged on the right side of the first annular plate and a screw rod fixed with the output end of the driving motor. According to the utility model, the first ejection assembly can eject a product, external air can enter a gap between the product and the cavity through the first air channel during ejection, so that negative pressure is avoided, the second ejection assembly can eject a shaped product, and the external air can enter the gap between the product and the cavity through the second air channel during ejection, so that negative pressure is avoided, and the problem of sticking a die is avoided, so that demolding is facilitated.

Description

Injection mold for preventing mold sticking

Technical Field

The utility model relates to the technical field of injection molds, in particular to an injection mold capable of preventing mold sticking.

Background

With the development of technology, plastic products are more and more convenient to produce, and can be manufactured by an injection molding method, wherein the injection molding method is a processing method used for mass production of parts with complex shapes. The process can use an injection mold, wherein the injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and precise dimensions. The method comprises the steps of injecting heated and melted plastic into a die cavity under high pressure by an injection molding machine, and cooling and solidifying to obtain a formed product.

The retrieved patent with publication number CN209079079U discloses an injection mold, the contents of which describe "comprising: the front mold of the injection mold and the rear mold of the injection mold are used for being attached to the rear mold of the injection mold. The injection mold front mold comprises a front mold fixing plate, a positioning ring, a glue inlet, a front mold base plate and a runner, wherein the positioning ring is arranged on the front mold fixing plate, the glue inlet is communicated with the positioning ring, and the front mold base plate is arranged on the front mold fixing plate. According to the injection mold, the front mold and the rear mold of the injection mold are matched together to form the mold forming cavity, the plastic solution is injected, and the product … …' is formed after cooling and shaping.

Disclosure of Invention

The present utility model is directed to solving the problems of the prior art or related art.

The technical scheme adopted by the utility model is as follows: the utility model provides an injection mold of antiseized mould, includes left die holder, first ejecting group, right die holder and the ejecting subassembly of second, the corner on left die holder right side all is provided with the reference column, first ejecting subassembly is including setting up left side die holder left U type pole, setting are in the left cylinder of U type pole, setting are in the fixed plate on cylinder right side, setting are in the first ejector pin on fixed plate right side and offer first air passage on the first ejector pin, right die holder with reference column sliding connection, the ejecting subassembly of second is including setting up first annular plate on right die holder right side, setting up first annular plate right side driving motor, with driving motor output fixed lead screw, threaded connection are in second annular plate on the lead screw, setting up second annular plate left second ejector pin and offer second air passage on the second ejector pin.

Preferably, an injection molding pipe is arranged at the top end of the left die holder, and a first through hole is formed in the inner wall of the left die holder.

Preferably, four first ejector rods are arranged, and two first ejector rods are inserted into corresponding first through holes.

Preferably, the locking assembly comprises a fixed seat arranged at the front end of the left die holder, a locking rod in threaded connection with the fixed seat and a stop block arranged at the bottom end of the locking rod.

Preferably, the front end and the rear end of the right die holder are respectively provided with a baffle, the two baffles are in one-to-one correspondence with the locking components, and the inner wall of the right die holder is provided with a second through hole.

Preferably, the driving motor and the connected screw rods are in one group, two groups are symmetrically arranged, and the screw rods are rotationally connected with the right die holder through bearings.

Preferably, four second ejector rods are arranged and are inserted in the corresponding second through holes.

By adopting the technical scheme, the beneficial effects obtained by the utility model are as follows: the utility model discloses the cylinder accessible fixed plate of the first ejecting subassembly of setting drives first ejector pin and removes, the product of shaping can be ejected to the first ejector pin of removal, when ejecting, external air accessible first air passage gets into the gap between product and the die cavity, avoid the formation of negative pressure, the driving motor accessible lead screw of the ejecting subassembly of second that sets up simultaneously drives second annular slab and second ejector pin and removes, the product of shaping can be ejected to the second ejector pin of removal, when ejecting, external air accessible second air passage gets into the gap between product and the die cavity, avoid the formation of negative pressure, thereby avoid the problem of sticking the mould, so that the drawing of patterns, then the locking lever of the locking subassembly that sets up can rotate downwards, rotatory locking lever can block baffle on the right die holder, can lock, improve fixed effect.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a left die holder according to the present utility model;

FIG. 3 is a schematic view of a first ejection assembly according to the present utility model;

FIG. 4 is a schematic view illustrating a structure of the first ejector pin of FIG. 3 according to the present utility model;

FIG. 5 is a schematic view of the structure of the locking assembly of the present utility model;

FIG. 6 is a schematic view of the right die holder of the present utility model;

fig. 7 is a schematic structural view of a second ejection assembly according to the present utility model.

Reference numerals:

100. a left die holder; 110. injection molding a tube; 120. positioning columns; 130. a first through hole;

200. a first ejection assembly; 210. a U-shaped rod; 220. a cylinder; 230. a fixing plate; 240. a first ejector rod; 241. a first air passage;

300. a locking assembly; 310. a fixing seat; 320. a locking lever; 330. a stop block;

400. a right die holder; 410. a baffle; 420. a second through hole;

500. a second ejection assembly; 510. a first annular plate; 520. a driving motor; 530. a screw rod; 540. a second annular plate; 550. a second ejector rod; 551. and a second air passage.

Detailed Description

The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

Some embodiments of the present utility model provide an injection mold for preventing mold sticking, which is described below with reference to the accompanying drawings.

Embodiment one:

referring to fig. 1-7, a first embodiment of the present utility model provides an anti-sticking injection mold, which includes a left mold base 100, a first ejection assembly 200, a right mold base 400, and a second ejection assembly 500.

Specifically, the corner on the right side of the left die holder 100 is provided with a positioning column 120, the positioning column 120 can slide with the right die holder 400 to play a positioning effect, the top end of the left die holder 100 is provided with an injection molding tube 110, raw materials can be injected into the left die holder 100 through the injection molding tube 110 so as to be shaped, the inner wall of the left die holder 100 is provided with a first through hole 130, and the first through hole 130 enables a first ejector rod 240 to eject a product so as to be demolded.

Specifically, the first ejection assembly 200 includes a U-shaped rod 210 disposed on the left side of the left die holder 100, an air cylinder 220 disposed on the left side of the U-shaped rod 210, a fixing plate 230 disposed on the right side of the air cylinder 220, a first ejector rod 240 disposed on the right side of the fixing plate 230, and a first air channel 241 disposed on the first ejector rod 240, when a product is in the left die holder 100, the air cylinder 220 can be controlled to extend, the first ejector rod 240 can be driven to move by the fixing plate 230, the moving first ejector rod 240 can eject a shaped product, and at the same time of ejection, outside air can enter a gap between the product and a cavity through the first air channel 241, so that negative pressure is avoided, the first ejector rod 240 is provided with four, two first ejector rods 240 are inserted in corresponding first through holes 130, and the first through holes 130 enable the first ejector rod 240 to move in the left die holder 100, so that the product can be ejected.

Specifically, the right die holder 400 is slidably connected with the positioning column 120, the front end and the rear end of the right die holder 400 are respectively provided with a baffle 410, the baffles 410 are matched with the locking assembly 300 for use, the left die holder 100 and the right die holder 400 can be fixed, the inner wall of the right die holder 400 is provided with a second through hole 420, and the second through hole 420 enables the second ejector rod 550 to eject a product so as to facilitate demolding.

Specifically, the second ejection assembly 500 includes a first annular plate 510 disposed on the right side of the right die holder 400, a driving motor 520 disposed on the right side of the first annular plate 510, a screw rod 530 fixed to an output end of the driving motor 520, a second annular plate 540 screwed on the screw rod 530, a second ejector rod 550 disposed on the left side of the second annular plate 540, and a second air channel 551 provided on the second ejector rod 550, when a product is in the right die holder 400, the driving motor 520 of the second ejection assembly 500 can be controlled to operate, the driving motor 520 can drive the second annular plate 540 and the second ejector rod 550 to move through the screw rod 530, the moving second ejector rod 550 can eject a shaped product, and at the same time of ejection, outside air can enter a gap between the product and a cavity through the second air channel 551, so that a negative pressure is avoided, so that a problem of sticking a die is avoided, the driving motor 520 and the connected screw rod 530 are in a first group, two groups are symmetrically arranged, the screw rod 530 is rotationally connected with the right die holder 400 through a bearing, the two driving motors 520 can synchronously drive the corresponding screw rod 530 to rotate, so that the second ejector rod 530 can be pushed to move in a horizontal direction, and the second ejector rod 550 is correspondingly inserted into the second ejector rod 550, and the second ejector rod 550 can move in the second die holder 420, and the second ejector rod 550 can move in the corresponding through hole 420.

Embodiment two:

referring to fig. 1, 5 and 6, a second embodiment of the present utility model is different from the first embodiment in that: still include locking subassembly 300, locking subassembly 300 includes fixing base 310, the locking lever 320 of threaded connection with fixing base 310 and sets up dog 330 in locking lever 320 bottom at left die holder 100 front end, when right die holder 400 moves and contacts with left die holder 100, baffle 410 can be with fixing base 310 butt this moment, then can rotatory locking lever 320 downwards, and rotatory locking lever 320 can drive dog 330 downwards, until dog 330 stops baffle 410, can lock right die holder 400, improves the fixed effect.

The working principle and the using flow of the utility model are as follows: when the die is used, the right die holder 400 is moved leftwards until the right die holder 400 is contacted with the left die holder 100, the baffle plate 410 can be abutted with the fixed seat 310 of the locking assembly 300, then the locking rod 320 can be rotated downwards, the locking rod 320 which is rotated downwards can drive the stop block 330 until the stop block 330 stops the baffle plate 410, the right die holder 400 can be locked, the fixing effect is improved, the right die holder 400 can be moved during demolding, when a product is in the left die holder 100, the cylinder 220 of the first ejection assembly 200 can be controlled to stretch, the cylinder 220 can drive the first ejector rod 240 to move through the fixing plate 230, the moving first ejector rod 240 can eject a shaped product, and at the same time of ejection, outside air can enter a gap between the product and a cavity through the first air channel 241, so that negative pressure is avoided, when the product is in the right die holder 400, the driving motor 520 can drive the second annular plate 540 and the second ejector rod 550 to move, the moving second ejector rod 550 can eject the shaped product, and at the same time of ejection, the outside air can enter the gap between the product and the negative pressure so that the problem of forming of a die cavity is avoided.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. An injection mold for mold release, comprising:

the left die holder (100), the corner on the right side of the left die holder (100) is provided with a positioning column (120);

the first ejection assembly (200) comprises a U-shaped rod (210) arranged on the left side of the left die holder (100), a cylinder (220) arranged on the left side of the U-shaped rod (210), a fixed plate (230) arranged on the right side of the cylinder (220), a first ejector rod (240) arranged on the right side of the fixed plate (230) and a first air channel (241) formed in the first ejector rod (240);

the right die holder (400), the said right die holder (400) is connected with said locating column (120) slidably;

the second ejection assembly (500) comprises a first annular plate (510) arranged on the right side of the right die holder (400), a driving motor (520) arranged on the right side of the first annular plate (510), a screw rod (530) fixed with the output end of the driving motor (520), a second annular plate (540) in threaded connection with the screw rod (530), a second ejector rod (550) arranged on the left side of the second annular plate (540) and a second air channel (551) arranged on the second ejector rod (550).

2. The anti-sticking injection mold according to claim 1, wherein an injection pipe (110) is provided at the top end of the left mold base (100), and a first through hole (130) is provided in the inner wall of the left mold base (100).

3. The anti-sticking injection mold according to claim 2, wherein four first ejector pins (240) are provided, and two first ejector pins (240) are inserted into corresponding first through holes (130).

4. An injection mold according to claim 3, further comprising a locking assembly (300), wherein the locking assembly (300) comprises a fixing base (310) disposed at the front end of the left mold base (100), a locking rod (320) screwed with the fixing base (310), and a stopper (330) disposed at the bottom end of the locking rod (320).

5. The anti-sticking injection mold according to claim 4, wherein the front and rear ends of the right mold holder (400) are respectively provided with a baffle plate (410), two baffle plates (410) are in one-to-one correspondence with the locking assemblies (300), and the inner wall of the right mold holder (400) is provided with a second through hole (420).

6. The anti-sticking injection mold according to claim 5, wherein the driving motor (520) is arranged in a group with two groups of connected screw rods (530), and the screw rods (530) are rotationally connected with the right mold base (400) through bearings.

7. The anti-sticking injection mold according to claim 6, wherein four second ejector pins (550) are provided, and four second ejector pins (550) are inserted into corresponding second through holes (420).