WO2023040049A1

WO2023040049A1 - Injection mold intersecting inclined ejection and removal mechanism

Info

Publication number: WO2023040049A1
Application number: PCT/CN2021/132959
Authority: WO
Inventors: 梁正华; 梁凯; 王华良; 林连明
Original assignee: 浙江凯华模具有限公司
Priority date: 2021-09-14
Filing date: 2021-11-25
Publication date: 2023-03-23
Also published as: CN113752493A

Abstract

Disclosed is an injection mold intersecting inclined ejection and removal mechanism, comprising an upper composite board and a lower composite board. A mold cavity is connected below the upper composite board, a mold core is disposed on the lower composite board, and an ejector board is disposed between the lower composite board and the mold core. The invention also comprises an intersecting inclined ejection assembly, the intersecting inclined ejection assembly comprising an inclined ejection block assembly and an intersecting inclined ejector rod arranged on the ejector board; the inclined ejection block assembly is connected to an upper end of the intersecting inclined ejector rod, and the inclined ejection block assembly comprises a first inclined ejection block and a second inclined ejection block that are inserted in and matched with each other. The injection mold intersecting inclined ejection and removal mechanism forms an inclined ejection block assembly by means of the first inclined ejection block and the second inclined ejection block being inserted into and matched with one another, so that the inclined ejection block assembly occupies a small inclined ejection inner space, thereby effectively solving the problem of an inclined ejection space in a plastic item being insufficient for two inclined ejection blocks to be able to be inserted; the first inclined ejection block and the second inclined ejection block move in different directions, thereby achieving ejection of a plastic part from different directions; the present invention has a simple structure, high production efficiency, achieves simultaneous inclined ejection and removal, and has convenient and fast operation.

Description

An injection mold cross-slanting top release and reverse buckle mechanism

technical field

The invention relates to the technical field of injection molds, in particular to an injection mold cross-slanted top release and undercut mechanism.

Background technique

Mold is an indispensable and important tool in injection molding. Injection molding is a processing method that injects hot-melt plastic material into a closed cavity with the required shape in the mold at high speed, and after the plastic material cools and solidifies, the mold is opened to eject the solidified plastic product to obtain a molded product. At present, some plastic parts cannot be put into two slanting heads due to the relatively close distance between the slanting heads, so the traditional method cannot be used for slanting. At present, there are also some crossing inclined roof devices, for example, "a kind of inclined roof device with crossing double guide rods" disclosed in Chinese patent literature, its announcement number CN205800103U, including base plate, fixed mold assembly and movable mold; On the bottom plate, the inclined roof assembly includes an inclined roof guide rod and an auxiliary guide rod. The lower end of the inclined roof guide rod is connected with the auxiliary guide rod. Inside the mold cavity; the sliding core seat includes a base and the base can be moved and set on the auxiliary guide rod, an inclined surface is opened on the upper surface of the base, an installation groove is opened on the inclined surface and a sliding core is arranged in the installation groove, and the inclined top guide rod The lower end of the guide sleeve is fixed on the sliding core; the guide sleeve is set on the movable mold and the inclined top guide rod is penetrated on the guide sleeve, and the movable mold is also fixedly connected with a pressure plate, and one end of the guide sleeve is against the pressure plate superior. Although the inclined roof device in this patent technical solution uses the structure of crossing double guide rods, it does not carry out the inclined roof through the intersection of the inclined ejector rods themselves, and it cannot solve the problem that the plastic parts cannot be put into the two sides because the distance between the inclined roofs is relatively close. A slanted head question.

Contents of the invention

The present invention aims to overcome the problems in the above-mentioned prior art that the plastic parts after injection molding cannot be put into two inclined heads inside the mold due to the relatively short distance between the inclined heads to realize the ejection, and provides a cross-inclined ejection mechanism for injection molds. , to solve the problem that the space of the inclined roof in the plastic part is insufficient to put two inclined roof blocks, and the structure is simple, the production efficiency is high, the inclined roof is released and buckled at the same time, and the operation is convenient and quick.

In order to achieve the above object, the present invention adopts the following technical solutions:

An injection mold cross slanting top release mechanism, including an upper doubler plate and a lower doubler plate, a mold cavity is connected under the upper doubler plate, a core is arranged on the lower doubler plate, and a thimble is arranged between the lower doubler plate and the core The plate also includes a cross jacking assembly, the cross jacking assembly includes a jacking block assembly and a crossing jacking bar arranged on the ejector pin plate, the jacking block assembly is connected to the upper end of the crossing jacking bar, and the jacking block assembly includes a cross jacking bar that is inserted into each other Connect the matched first inclined top block and the second inclined top block.

In this technical solution, the first inclined top block and the second inclined top block are plugged together to form the inclined top block assembly. When the mold is closed, the first inclined top block and the second inclined top block are plugged together to form As a whole, the inclined top block assembly reduces its overall shape and volume, making it occupy a small space inside the inclined top, which effectively solves the problem of insufficient space in the inclined top of the plastic part and cannot put two inclined top blocks. At this time, the first inclined jacking block and the second inclined jacking block are moved in different directions through the driving of the crossing inclined jacking rods, so that the first inclined jacking block and the second inclined jacking block are disengaged from each other, thereby realizing alignment from different directions. The sloping top of the plastic part is convenient for the plastic part to be ejected and unbuckled smoothly. In addition, the structure of the cross slanted top assembly is simple, and the plastic part can be ejected and unbuckled smoothly only by moving the upper ejector plate and the lower ejector plate. , easy operation and high production efficiency.

Preferably, an insertion notch is provided on the first inclined top block, and an insertion protrusion is provided on the second inclined top block, and the insertion protrusion and the insertion notch cooperate with each other and are inserted and connected. The insertion protrusion and the insertion notch connect the first inclined top block and the second inclined top block together to form the whole inclined top block assembly, and the setting of the insertion gap is convenient for the first inclined top block and the second inclined top block when the inclined top is lifted. The two inclined top blocks move in different directions, so as to realize the detachment of the first inclined top block and the second inclined top block, and connect the first inclined top block and the second inclined top block into a whole by plugging to reduce the number of inclined top blocks. The block takes up space, which solves the problem that two inclined heads cannot be placed in the plastic part due to the short distance between the inclined heads.

As preferably, the cross jacking rod comprises a first jacking rod connected with the first jacking block, a second jacking rod connected with the second jacking block, the inclination direction of the first jacking bar and the second jacking bar The tilt direction of the cross is set. Such an arrangement is convenient for exerting force on the plastic part from two different directions, so that it can be ejected from the mold smoothly. The first inclined ejector rod drives the first inclined ejector block and the second inclined ejector rod drives the second inclined ejector block to move in two different directions, thereby driving the plastic part to stretch in two different directions, and the plastic part is removed from the mold and buckled upside down out.

Preferably, a double-rod guiding mechanism is arranged at the lower end of the first inclined ejector rod. The double-rod guide mechanism plays a guiding role for the ejection of the first inclined ejector rod, which is convenient for controlling the ejection direction of the first inclined ejector rod.

As a preference, the double-rod guiding mechanism includes a double-rod slide seat and a guide rod slidably inserted in the double-rod slide seat. It is connected to the double rod sliding seat and driven by the double rod sliding seat to realize the movement. The cooperation of the guide rod and the double-rod sliding seat plays a guiding role in the ejection of the first inclined ejector rod. Therefore, the upper ejector plate moves to drive the double-rod sliding seat to move upward along the guide rod, thereby driving the first inclined ejector rod to move upward obliquely. Realize the inclined upward ejection of plastic parts.

Preferably, the lower end of the first inclined ejector rod is fixed on the double-rod sliding seat, the guide rod obliquely passes through the double-rod sliding seat, and the guide rod and the first inclined ejector rod are arranged in parallel. The guide rod plays a guiding role for the ejection of the first inclined ejector rod. The guide rod and the first inclined ejector rod are arranged in parallel so that when the first inclined ejector rod is ejected, it can be ejected smoothly along the direction of the guide rod, preventing the guide rod from Interfere with the ejection of the first inclined ejector rod.

Preferably, a guide fixing seat is provided at the lower end of the guide rod, the upper end of the guide rod is arranged at the bottom of the core, and the guide fixing seat is fixed on the lower doubler plate. The two ends of the guide rod are respectively fixed by the core and the lower doubler plate, which avoids the movement of the guide rod during the movement of the thimble plate and affects its guiding effect.

Preferably, an inclined ejector slide is provided at the bottom of the second inclined ejector rod, and the inclined ejector block slide is fixed on the lower ejector plate in the ejector plate. The second inclined ejector rod pushes out the second inclined ejector block through the movement of the lower ejector pin.

Therefore, the present invention has the following beneficial effects: it solves the problem that there is not enough space for two inclined roof blocks in the plastic part, and has a simple structure, high production efficiency, simultaneous release and buckle of the inclined roof, and convenient and quick operation.

Description of drawings

Fig. 1 is a structural schematic diagram of an injection mold cross-slanted top release and reverse buckle mechanism;

Fig. 2 is a schematic diagram of the structure of the injection mold after the inclined top of the cross-sloping top release mechanism is released;

Fig. 3 is a structural schematic diagram of a cross inclined roof assembly;

Fig. 4 is a kind of cross-sectional view of the inclined roof assembly;

Fig. 5 is a schematic structural view of the first inclined roof mechanism;

Fig. 6 is the structural representation of the second inclined roof mechanism;

In the figure: 1. Upper doubler plate 2. Lower doubler plate 3. Cavity 4. Die foot 5. Core 6. Upper ejector plate 7. Lower ejector plate 8. First inclined ejector block 801. Insertion gap 9. Second Two inclined jacking blocks 901, plug-in protrusions 10, first inclined ejector rod 11, second inclined ejector rod 12, guide rod 13, double-rod sliding seat 14, inclined top sliding seat 15, guide fixing seat 16, guide sliding sleeve 17. Plastic parts.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1:

In the embodiment 1 shown in Fig. 1 and Fig. 2, a kind of injection mold cross-slanted top release mechanism, which includes the upper doubler plate 1 and the lower doubler plate 2, the mold cavity 3 is connected under the upper doubler plate 1, and the lower doubler plate The mold foot 4 is connected to the doubler plate 2, the core 5 is connected to the mold foot 4, and a thimble plate is arranged between the core 5 and the lower double plate 2, and the thimble plate includes an upper thimble plate 6 and a lower thimble plate 7. A cross lifter assembly is arranged on the ejector plate, and the cross lifter assembly includes a lifter block assembly and a cross lifter bar arranged on the ejector plate, and the lifter block assembly is connected to an upper end of the cross lifter bar. The jacking block assembly includes a first jacking block 8 and a second jacking block 9 that are plugged together, and the cross jacking bar includes a first jacking rod 10 connected with the first jacking block 8, and a second jacking bar connected with the second jacking block. The second jacking rod 11 connected to the block 9, the first jacking rod 10 and the second jacking rod 11 are intersected, that is, the direction of inclination of the first jacking rod 10 and the direction of inclination of the second jacking rod 11 are intersected. The first inclined ejector rod and the second inclined ejector rod are movable through the inside of the core from the bottom of the core respectively, and the first inclined ejector block 8 is arranged on the upper end of the first inclined ejector rod and can go upward together with the first inclined ejector rod Movement, the second inclined ejector block 9 is arranged on the upper end of the second inclined ejector rod and moves upward together with the second inclined ejector rod, thereby realizing the ejection operation in two directions. A double-rod guiding mechanism is arranged at the lower end of the first inclined ejector rod 10, and the first inclined ejector block 8, the first inclined ejector rod 10 and the double-rod guiding mechanism form the first inclined ejector mechanism. A ramping slide seat 14 is arranged at the bottom of the second ramping rod 11, and the ramping sliding seat 14 is fixed on the lower ejector plate 7, and the second ramping block 9 and the second ramping bar 11 form a second ramping mechanism.

As shown in Fig. 5 and Fig. 6, an insertion gap 801 is provided on the first inclined top block 8, and an insertion protrusion 901 is arranged on the second inclined top block 9, and the insertion protrusion 901 is arranged on the insertion gap. In 801, the insertion protrusion 901 and the insertion gap 801 fix the first inclined top block 8 and the second inclined top block 9 together, and the setting of the insertion gap 801 is convenient for the first inclined top block 8 and the second inclined top block 8 when the inclined top is installed. The disengagement between the second slanted top blocks 9 not only combines the two slanted top blocks to reduce the space of the slanted top blocks, but also solves the problem that the two slanted tops cannot be put into the plastic part 17 due to the short distance between the slanted tops, and realizes The first inclined jacking block 8 and the second inclined jacking block 9 carry out inclined jacking from different directions.

As shown in Figure 3, the double-rod guide mechanism includes a double-rod slide seat 13 and a guide rod 12 passing through the double-bar slide seat 13, wherein the double-bar slide seat 13 is fixed on the upper ejector plate 6, and the first inclined ejector rod 10 and guide rod 12 are all obliquely arranged on the double rod slide seat 13. Wherein the lower end of the first inclined ejector rod 10 is fixed on the double rod slide seat 13, the guide rod 12 obliquely passes through the double rod slide seat 13, and the guide rod 12 and the first inclined ejector rod 10 are arranged in parallel. The lower end of the guide rod 12 is provided with a guide fixing seat 15, the upper end of the guide rod 12 is arranged on the bottom of the core 5, the guide fixing seat 15 is fixed on the lower double plate 2, and the lower end of the guide rod 12 is fixed on the lower ejector plate 7 through the guide fixing seat 15 It is convenient to drive the guide rod 12 to move up through the lower ejector plate 7 to realize the inclined ejection of the first inclined ejector rod 10 .

In addition, as shown in FIG. 4 , the guide rod 12 is slidably disposed in the double-rod slide seat 13 , and a guide slide sleeve 16 is fixed inside the double-bar slide seat 13 , and the guide slide sleeve 16 is sheathed outside the guide rod 12 .

When performing inclined ejection, the double-rod sliding seat 13 is used to limit the guide rod 12 and the first inclined ejector rod 10, and the guide rod 12 and the double-rod sliding seat 13 cooperate to guide the ejection of the first inclined ejector rod 10. Therefore, the upward movement of the upper ejector pin plate 6 drives the double-rod sliding seat 13 to move upward, and the double-rod sliding seat 13 moves upwardly along the guide rod, thereby driving the first inclined ejector rod 10 and the first inclined ejector block 8 on it to move upwardly. The first inclined ejector rod 10 is ejected obliquely under the cooperative action of the guide rod 12 and the double-rod sliding seat 13, thereby realizing the ejection operation of the first inclined ejector mechanism. The movement of the lower ejector plate 7 drives the second inclined ejector rod 11 and the second inclined ejector block 9 on it to move upwards and ejected obliquely, thereby realizing the ejection operation of the second inclined ejector mechanism. Since the first inclined ejector rod 10 and the second inclined ejector rod 11 have different inclination directions, the two are arranged crosswise, so that the plastic parts are subjected to forces pushed out in different directions during the ejection process, so that the plastic parts 17 are turned outwards towards the undercut. The direction of disengagement is stretched, which realizes that the plastic parts are ejected from the mold from different directions, so that the plastic part 17 product can be smoothly separated from the undercut, so that the demoulding of the undercut product can be realized, and this mechanism simplifies the mold structure and reduces Reduce mold manufacturing costs and improve production efficiency.

It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the above description refer to the directions in the drawings, and the words "inner" and "outer ” refer to directions towards or away from the geometric center of a particular part, respectively.

The above embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make various other corresponding changes and deformations according to the above-described technical solutions and concepts, and all these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims

An injection mold cross slanted top release and undercut mechanism, comprising an upper doubler plate (1) and a lower doubler plate (2), a mold cavity (3) is connected under the upper doubler plate (1), and the lower doubler plate (2) is arranged There is a core (5), and an ejector plate is arranged between the lower double plate (2) and the core (5). The cross jacking rods on the board and the jacking block assembly are connected to the upper end of the crossing jacking rods, and the jacking block assembly includes a first jacking block (8) and a second jacking block (9) which are plugged and fitted with each other.
According to claim 1, an injection mold cross slanting top release mechanism is characterized in that an insertion gap (801) is provided on the first slanting top block (8), and an insertion gap (801) is provided on the second slanting top block (9). ) is provided with a plug-in protrusion (901), and the plug-in protrusion (901) cooperates with the plug-in notch (801) and is plug-in connected.
According to claim 1 or 2, an injection mold cross slanting ejection mechanism is characterized in that the cross slanting ejector includes a first slanting ejector (10) connected to the first slanting ejector block (8), In the second jacking rod (11) connected with the second jacking block (9), the tilting direction of the first jacking pin (10) and the tilting direction of the second jacking pin (11) are arranged to intersect.
According to claim 3, an injection mold cross-slanting lift-off and buckling mechanism is characterized in that a double-rod guiding mechanism is arranged at the lower end of the first slanting lifter (10).
According to claim 4, an injection mold cross slanting top release and buckle mechanism is characterized in that the double-rod guiding mechanism comprises a double-rod slide seat (13) and a guide rod (12) that slides through the double-bar slide seat ), the double-rod sliding seat (13) is fixed on the upper ejector plate (6) in the ejector plate, and the first inclined ejector rod (10) is obliquely connected to the double-rod sliding seat (13) and slides through the double-rod Seat (13) drives and realizes moving.
According to claim 5, an injection mold cross slanting ejection mechanism, characterized in that, the lower end of the first slanting ejector rod (10) is fixed on the double-rod sliding seat (13), and the guide rod (12) is inclined The double-rod sliding seat (13) is pierced, and the guide rod (12) and the first inclined ejector rod (10) are arranged in parallel.
According to claim 5, a kind of injection mold cross-slanting top release and buckle mechanism is characterized in that a guide fixing seat (15) is arranged at the lower end of the guide rod (12), and the upper end of the guide rod (12) is arranged on the molded At the bottom of the core (5), the guide fixing seat (15) is fixed on the lower cladding plate (2).
According to any one of claim 3, an injection mold cross-slope lift-off mechanism is characterized in that, a lift slide seat (14) is provided at the bottom of the second lift rod (11), and the lift slide seat (14) (14) is fixed on the lower ejector plate (7) of the ejector plate.