阅读说明：本技术 一种模具保护防压装置 (Mould protection pressure-proof device ) 是由 林荣毅 郭国阳 陈坊达 于 2020-05-19 设计创作，主要内容包括：本发明公开了一种模具保护防压装置,包括顶针板、滑块座和型腔,所述滑块座能与型腔配合,所述顶针板设置于滑块座与型腔的下方,所述顶针板上设置有复位顶针,所述复位顶针在顶针板未完全复位时,能与滑块座干涉,本发明通过上述结构的设计,防止了当顶出系统出现故障时,因无法自动复位而导致合模时出现压坏模具滑块座或者型腔的事故,避免了因事故而产生的额外高昂维修费用。(The invention discloses a die protection pressure-proof device which comprises an ejector plate, a sliding block seat and a die cavity, wherein the sliding block seat can be matched with the die cavity, the ejector plate is arranged below the sliding block seat and the die cavity, a reset ejector pin is arranged on the ejector plate, and the reset ejector pin can interfere with the sliding block seat when the ejector plate is not completely reset.)

1. The utility model provides a mould protection pressure-proof device, includes thimble board, slider seat and die cavity, the slider seat can cooperate with the die cavity, the thimble board sets up in the below of slider seat and die cavity, its characterized in that: the ejector pin plate is provided with a reset ejector pin, and the reset ejector pin can interfere with the sliding block seat when the ejector pin plate is not completely reset.

2. The mold protection pressure prevention device according to claim 1, wherein: and a gap of at least 0.5mm is formed between the reset thimble and the side end of the slide block seat.

3. The mold protection pressure prevention device according to claim 1, wherein: and in a die assembly state, a gap of at least 0.5mm is formed between the reset thimble and the lower end of the sliding block seat.

4. The mold protection pressure prevention device according to claim 1, wherein: the ejector pin plate is composed of a surface pin plate and a bottom pin plate.

5. The mold protection pressure prevention device according to any one of claims 1 to 4, wherein: the sliding block seat is provided with a sliding block core, and the ejection stroke of the reset thimble is smaller than the distance from the upper end part of the reset thimble to the sliding block core in the die sinking state.

6. The mold protection pressure prevention device according to claim 5, wherein: the mould protection pressure-proof device further comprises an inclined guide post, and when the reset thimble interferes with the sliding block seat, the inclined guide post also interferes with the sliding block seat.

Technical Field

The invention relates to a die protection pressure-proof device.

Background

In a common mold, after the mold is opened in injection molding production, a sliding block is used for pulling a core, an ejector plate is needed as an ejection system to eject a molded part after injection molding is finished, and then the mold is closed to carry out the next injection molding production. When the ejection system fails, the ejection system cannot be automatically reset, and a die slide block or a die cavity is crushed when the die is closed again, so that expensive die repairing cost is caused.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a mold protection pressure-proof device, which only needs to add a reset thimble on a thimble plate, and when the ejection system is not completely reset, the slide block core is blocked by the reset thimble. The inclined guide post interferes with the sliding block seat, and the die cannot be closed under the action of low-pressure protection of the machine table. Therefore, the device can play a role in protecting the die under the condition of the fault of the ejection system, and the maintenance cost is saved.

The invention is realized by the following technical scheme:

the utility model provides a mould protection pressure-proof device, includes thimble board, slider seat and die cavity, the slider seat can cooperate with the die cavity, the thimble board sets up in the below of slider seat and die cavity, be provided with the thimble that resets on the thimble board, the thimble that resets can interfere with the slider seat when the thimble board does not reset completely.

In the embodiment of the invention, the ejector pin plate is composed of a surface pin plate and a bottom pin plate.

In the embodiment of the invention, a clearance of at least 0.5mm is arranged between the reset thimble and the side end of the slide block seat.

In the embodiment of the invention, in a mold closing state, a gap of at least 0.5mm is formed between the reset thimble and the lower end of the slider seat.

In the embodiment of the invention, the slide block seat is provided with the slide block core, and the ejection stroke of the reset thimble is smaller than the distance from the upper end part of the reset thimble to the slide block core in the mould opening state.

In the embodiment of the invention, the die protection pressure-proof device further comprises an inclined guide post, and when the reset thimble interferes with the slider seat, the inclined guide post also interferes with the slider seat.

The die protection pressure-proof device has the following beneficial effects:

and under the condition that the ejection system is not completely reset, the slide block core is blocked by the strong reset thimble. The inclined guide post interferes with the sliding block seat, and the die cannot be closed under the action of low-pressure protection of the machine table. Therefore, the device can play a role in protecting the die under the condition of the fault of the ejection system, and the maintenance cost is saved.

Drawings

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

FIG. 1 is a schematic of the present invention.

In the figure: 10-ejector pin plate; 11-a needle board; 12-a bottom needle plate; 20-a slider holder; 21-a slider core; 30-a cavity; 40-resetting the thimble; 50-inclined guide post.

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 of the present invention without any inventive step, are within the scope of the present invention.

Referring to the attached drawings of the specification, a mold protection pressure-proof device comprises an ejector plate 10, a slide block seat 20 and a cavity 30, wherein the slide block seat 20 can be matched with the cavity 30, the ejector plate 10 is arranged below the slide block seat 20 and the cavity 30, a reset thimble 40 is arranged on the ejector plate 10, the reset thimble 40 can interfere with the slide block seat 20 when the ejector plate 10 is not completely reset, in the specific embodiment of the invention, the ejector plate 10 is composed of a surface needle plate 11 and a bottom needle plate 12, more specifically, the mold protection pressure-proof device further comprises an inclined guide pillar 50, when the reset thimble 40 interferes with the slide block seat 20, the inclined guide pillar 50 also interferes with the slide block seat 20, through the design of the structure, the slide block core entering is blocked by the reset thimble 40 under the condition that the ejection system is not completely reset, and simultaneously, the inclined guide pillar 50 also interferes with the slide block seat 20, therefore, the die cannot be closed under the low-pressure protection effect of the machine table, so that the accident that the sliding block seat or the die cavity is crushed in the die closing process is avoided, and extra high maintenance cost caused by the accident is avoided.

Further, in the preferred embodiment of the present invention, a gap of at least 0.5mm is formed between the reset thimble 40 and the side end of the slider seat 20, as shown in fig. a of the specification; in addition, in the mold clamping state, a gap of at least 0.5mm is formed between the reset thimble 40 and the lower end of the slider seat 20, as shown in fig. B of the specification, so as to ensure smooth movement of the slider seat 20.

Further, the slider seat 20 is provided with a slider core 21, and the ejection stroke of the reset thimble 40 is smaller than the distance from the upper end of the reset thimble 40 to the slider core 21 in the mold opening state, so as to prevent the reset thimble 40 from interfering with the slider core 21.

In the using process, when the ejector plate 10 acts, the reset thimble 40 moves forwards and backwards along with the ejector plate 10 synchronously, and a 0.5mm gap is reserved between the reset thimble 40 and the side surface of the slider seat 20 in the die opening state, so that the ejector plate 10 does not interfere with the slider seat 20 during ejection. Meanwhile, the ejection stroke needs to be designed considering that the ejection stroke is smaller than the distance between the slide block core 21 and the reset thimble 40. In addition, in a mold closing state, a clearance with the height difference of 0.5mm is reserved between the reset thimble 40 and the slider seat 20, so that the slider seat 20 is ensured to slide smoothly.

Further, when the ejector plate 10 is not completely reset, the reset ejector pin 40 will prevent the slider holder 20 from entering the core. Therefore, the inclined guide post 50 interferes with the slider seat 20, and therefore, in a low-pressure protection state of the machine table, specifically, when the mold clamping pressure of the machine table exceeds a threshold value set by a pressure sensor, the machine table is switched from a full-automatic mode to a manual mode and gives an alarm, so that mold clamping failure is realized, and a mold protection effect is achieved.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.