阅读说明：本技术 Eps头盔硬衬垫定位装夹工装 (EPS helmet hard liner positioning and clamping tool ) 是由 郑浩勇 王峰 赵峰 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种EPS头盔硬衬垫定位装夹工装,包括凹模,凹模的内型面与头盔硬衬垫毛坯外型面一致、内型面边缘与头盔硬衬垫毛坯边缘齐平,凹模上设有抽气通道,抽气通道的一端开设在内型面的下部、另一端外接至真空发生器。本发明适应个性化定制头盔硬衬垫铣削加工需求,定位及压紧效果好,不损伤零件,拆卸方便。(The invention discloses an EPS helmet hard lining positioning and clamping tool which comprises a female die, wherein the inner profile of the female die is consistent with the outer profile of a helmet hard lining blank, the edge of the inner profile is flush with the edge of the helmet hard lining blank, the female die is provided with an air exhaust channel, one end of the air exhaust channel is arranged at the lower part of the inner profile, and the other end of the air exhaust channel is externally connected to a vacuum generator. The milling device meets the milling processing requirement of the hard liner of the personalized customized helmet, has good positioning and pressing effects, does not damage parts, and is convenient to disassemble.)

1. The utility model provides a EPS helmet hard backing location clamping frock which characterized in that: the helmet hard lining blank forming device comprises a female die, wherein the inner molded surface of the female die is consistent with the outer molded surface of a helmet hard lining blank, the edge of the inner molded surface is flush with the edge of the helmet hard lining blank, an air exhaust channel is arranged on the female die, one end of the air exhaust channel is arranged at the lower part of the inner molded surface, and the other end of the air exhaust channel is externally connected to a vacuum generator.

2. The EPS helmet hard liner positioning and clamping tool as claimed in claim 1, wherein: a circle of groove is arranged near the upper edge of the inner profile along the circumferential direction, and a sealing ring is embedded in the groove.

3. The EPS helmet hard liner positioning and clamping tool as claimed in claim 2, wherein: the sealing ring adopts a hollow sealing pipe.

4. The EPS helmet hard liner positioning and clamping tool as claimed in claim 1, wherein: one end of the air exhaust channel, which is far away from the inner molded surface, is arranged on the side surface of the female die and is provided with an air nozzle, and the vacuum generator is connected with the air nozzle through an air pipe.

5. The EPS helmet hard liner positioning and clamping tool as claimed in claim 1, wherein: the side surface of the female die is designed into a reference surface, the upper end surface is designed with a reference hole, and the reference surface and the reference hole are used as manufacturing references and used for alignment in numerical control machining.

Technical Field

The invention belongs to the field of helmet manufacturing, and particularly relates to an EPS helmet hard liner positioning and clamping tool.

Background

The helmet hard liner mainly has the functions of buffering the impact on the head and protecting the head of a wearer from being injured, and the existing helmet hard liner is usually formed by foaming expandable polystyrene foam (EPS) by a mould. In order to improve wearing comfort, the hard helmet liner can be customized and designed based on human three-dimensional head point cloud data, and for the hard helmet liner which is customized and designed, if the hard helmet liner is molded by foaming through a mold, the production period is long, the mold cost is high, the product cost is high, and the hard helmet liner cannot be popularized and applied, so that an EPS blank piece is optimally machined by numerical control milling according to the shape, but the EPS material is relatively soft, the profile of the hard helmet liner is approximately spherical, and the hard helmet liner is not easy to position and clamp.

Disclosure of Invention

The invention aims to provide a positioning and clamping tool for an EPS helmet hard liner, which meets the milling processing requirement of a personalized customized helmet hard liner, has good positioning and pressing effects, does not damage parts, and is convenient to disassemble.

The technical scheme adopted by the invention is as follows:

the EPS helmet hard lining positioning and clamping tool comprises a female die, wherein the inner molded surface of the female die is consistent with the outer molded surface of a helmet hard lining blank, the edge of the inner molded surface is flush with the edge of the helmet hard lining blank, an air exhaust channel is arranged on the female die, and one end of the air exhaust channel is arranged at the lower part of the inner molded surface, and the other end of the air exhaust channel is externally connected to a vacuum generator.

Furthermore, a circle of groove is arranged near the upper edge of the inner profile along the circumferential direction, and a sealing ring is embedded in the groove.

Further, the sealing ring adopts a hollow sealing pipe.

Furthermore, one end of the air exhaust channel, which is far away from the inner molded surface, is arranged on the side surface of the female die and is provided with an air nozzle, and the vacuum generator is connected with the air nozzle through an air pipe.

Furthermore, the side surface of the female die is designed into a reference surface, the upper end surface is designed with a reference hole, and the reference surface and the reference hole are used as manufacturing references and used for alignment in numerical control machining.

The invention has the beneficial effects that:

this frock adopts the vacuum adsorption power to compress tightly the helmet hard liner that the material is softer and have spherical outer profile, adapts to individualized customization helmet hard liner milling process demand, and location and compress tightly effectually, and do not harm the part, and under the condition that the pipeline is lost air, the vacuum adsorption power that helmet hard liner received disappears, can take out from the die easily, and it is convenient to dismantle.

Drawings

Fig. 1 is a top view of an EPS helmet hard liner positioning and clamping tool in an embodiment of the invention.

FIG. 2 is a cross-sectional view of a female mold in an embodiment of the invention.

In the figure: 1-a female die; 2-sealing ring; 3-air tap; 4-trachea; 5-a vacuum generator; 6-a reference plane; 7-reference hole.

Detailed Description

The invention is further illustrated by the following figures and examples.

As shown in fig. 1 and 2, the EPS helmet hard liner positioning and clamping tool comprises a female die 1, wherein the inner profile of the female die 1 is consistent with the outer profile of a helmet hard liner blank, the edge of the inner profile is flush with the edge of the helmet hard liner blank, the female die 1 is provided with an air exhaust channel, one end of the air exhaust channel is arranged at the lower part of the inner profile, and the other end of the air exhaust channel is externally connected to a vacuum generator 5. This frock adopts the vacuum adsorption power to compress tightly the helmet hard liner that the material is softer and have spherical outer profile, adapts to individualized customization helmet hard liner milling process demand, and location and compress tightly effectually, and do not harm the part, and under the condition that the pipeline is lost air, the vacuum adsorption power that helmet hard liner received disappears, can take out from die 1 easily, and it is convenient to dismantle.

As shown in fig. 1 and 2, in this embodiment, a circle of groove is circumferentially arranged near the upper edge of the inner profile, a sealing ring 2 is embedded in the groove, and the sealing ring 2 can form a matching closed space to improve the adsorption effect. The sealing ring 2 is preferably a hollow sealing tube with good elasticity.

As shown in fig. 1 and 2, in this embodiment, one end of the air suction passage away from the inner surface of the passage is opened on the side of the female die 1 and is provided with an air nozzle 3, and a vacuum generator 5 is connected with the air nozzle 3 through an air pipe 4.

As shown in fig. 1, in the present embodiment, the side surface of the die 1 is designed as a reference surface 6, the upper end surface is designed with a reference hole 7, and the reference surface 6 and the reference hole 7 are used as manufacturing references for alignment during numerical control machining, so as to facilitate subsequent machining.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.