WO2019090951A1

WO2019090951A1 - Fixture for producing foam strip for trolley

Info

Publication number: WO2019090951A1
Application number: PCT/CN2017/120008
Authority: WO
Inventors: 田憬
Original assignee: 广州敏惠汽车零部件有限公司
Priority date: 2017-11-08
Filing date: 2017-12-29
Publication date: 2019-05-16
Also published as: CN207509683U

Abstract

A fixture for producing a foam strip for a trolley sequentially comprises a first template (1), a second template (2), a third template (3), a fourth template (4), and a fifth template (5). The first template (1), the second template (2), the third template (3), the fourth template (4), and the fifth template (5) are assembled to form a framework shaping channel and a tube shaping channel. The framework shaping channel and the tube shaping channel communicate by means of a first communication cavity of the fourth template (4) and a second communication cavity of the fifth template (5) . A first feed channel (10) and a second feed channel (11) are provided between the first template (1) and the second template (2). The first feed channel (10) communicates with the tube shaping channel, and the second feed channel (11) communicates with the framework shaping channel. Two shaping cores (7) extending through the tube shaping channel are provided in the tube shaping channel. The fixture has a simple structure, low molding costs, and is highly adaptable. The foam produced for the trolley is lightweight.

Description

Trolley foam strip production fixture

Technical field

The invention relates to a production jig in the field of automobile parts production research, in particular to a trolley foam production jig.

Background technique

In the production of auto parts, most of the parts need to go through multiple processes. At this time, the trolley is generally required to turn the parts around between the processes. For the turnover of the door frame, the door frame is generally positioned and pressed in the trolley by the foam strip on the trolley. At present, there are two kinds of foam strips on the door frame trolley, one is a foam strip with a card slot for positioning, and the other is a toothed foam strip for compacting. The foam strip is molded by injection molding to form a solid structure with high density, which increases the weight of the trolley, thereby increasing the manufacturing cost and material cost; the foam strip is made of eucalyptus rubber, has high hardness, and has high cost for mold opening. Injection molding is difficult; after the foam strip is damaged, it can only be scrapped and cannot be reused. There is a need for a new type of foam strip that replaces the toothed compacted foam and a production jig for producing the foam strip.

Summary of the invention

The object of the present invention is to provide a trolley foam production jig, which has a simple structure and a low mold opening cost.

The solution to solve the technical problem of the present invention is: a trolley foam strip production jig, comprising a first template, a second template, a third template, a fourth template and a fifth template arranged in sequence, the first Forming the second template, the second template, the third template, the fourth template and the fifth template to form a skeleton forming passage and a tubular forming passage, and the skeleton forming passage and the tubular forming passage pass through the first connecting cavity and the fifth template of the fourth template a second communication chamber is communicated, a first feed channel and a second feed channel are disposed between the first template and the second template, the first feed channel is in communication with the tubular molding channel, the second feed The passage is in communication with the framing forming passage, and the tubular forming passage is provided with two forming cores extending through the tubular forming passage.

As a further improvement of the above technical solution, The first template and the second template are closed to form a first molding cavity communicating with the first feeding channel and a second molding cavity communicating with the second feeding channel, the first molding cavity and the second molding cavity Separated by a first partition block, a third molding cavity communicating with the first molding cavity and a fourth molding cavity communicating with the second molding cavity, the third molding cavity and the fourth molding cavity are disposed on the third template Separated by a second partition block, a fifth molding cavity communicating with the third molding cavity and a sixth molding cavity communicating with the fourth molding cavity, the fifth molding cavity and the sixth molding cavity are disposed on the fourth template Disposed between the third partitioning block, the first communicating cavity is distributed on two sides of the third partitioning block, and the first communicating cavity communicates with the fifth forming cavity and the sixth forming cavity, and the skeleton forming channel and the tubular forming channel pass The second communication cavity forms a seventh molding cavity on the fifth template.

As a further improvement of the above technical solution, the internal dimension of the third molding cavity gradually decreases toward the fifth molding cavity along the first molding cavity, and the internal dimension of the fourth molding cavity is along the second molding cavity. The direction of the six forming cavities gradually becomes smaller.

As a further improvement of the above technical solution, the seventh molding cavity comprises two tubular molding cavities and a U forming cavity having a U-shaped longitudinal section, and the U forming type comprises two linearly shaped cavities arranged in parallel, each The linear molding chambers are respectively in communication with a tubular molding cavity through the second communication chamber, and each of the forming cores corresponds to one of the tubular molding cavities.

As a further improvement of the above technical solution, the outer end surface of the first template is provided with a mounting plate, one end of the forming core is fixed on the mounting plate, and the forming core penetrates into the tubular forming passage.

As a further improvement of the above technical solution, a convex cavity is arranged on the outer side wall of the linear molding cavity.

The invention has the beneficial effects that the invention injects the hard material PP into the skeleton forming passage through the second feeding passage, forms a hard skeleton by the extrusion forming technology, and injects the soft material into the tubular forming passage through the first feeding passage. After the TPE, a tubular foam structure is formed by an extrusion molding technique, and the two extrudates are separated from each other by the corresponding partition block in the first template, the second template, and the third template, and pass through the first communication cavity in the fourth template. After the initial combination, the trolley foam strips are formed by finally joining together in the fifth template through the second communication cavity. The invention has the advantages of simple structure, low mold opening cost and strong versatility, and the quality of the produced trolley foam is light.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is apparent that the described drawings are only a part of the embodiments of the present invention, and not all of the embodiments, and those skilled in the art can obtain other designs and drawings according to the drawings without any creative work.

Figure 1 is a plan view of the present invention;

2 is a schematic structural view of the first template and the second template after the mold clamping in the present invention;

3 is a schematic structural view of a third template in the present invention;

4 is a schematic structural view of a fourth template in the present invention;

Fig. 5 is a schematic structural view of a fifth template in the present invention.

Detailed ways

The concept, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings. It is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments, based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The scope of protection of the present invention. In addition, all the coupling/joining relationships mentioned in the text are not directly connected to the components, but rather may constitute a better coupling structure by adding or reducing the coupling accessories according to the specific implementation.

Referring to Figures 1 to 5, A trolley foam strip production jig, comprising a first template 1, a second template 2, a third template 3, a fourth template 4 and a fifth template 5 arranged in sequence, the first template 1 and the second template 2. After the third template 3, the fourth template 4, and the fifth template 5 are clamped, a skeleton forming passage and a tubular forming passage are formed, and the skeleton forming passage and the tubular forming passage pass through the first communication chamber and the fifth template 5 of the fourth template 4. a second communication chamber is communicated, and a first feed channel 10 and a second feed channel 11 are disposed between the first template 1 and the second template 2, and the first feed channel 10 is in communication with the tubular molding channel. The second feed channel 11 is in communication with a skeleton forming channel in which are disposed two shaped cores 7 extending through the tubular forming channel. An annular extrudate flow region is formed between the inner wall of the skeleton forming passage and the forming core 7. The second feeding passage 11 communicates with the 65# extruder, which mainly injects the hard material PP, and after the hard material PP enters the skeleton forming passage, flows from the first template 1 to the fifth template 5; the first feeding passage 10 and The 40# extruder is connected, and the soft material TPE is mainly injected into the tubular molding channel, and then the molding core 7 is wrapped, and flows from the first template 1 to the fifth template 5.

After the hard material PP is injected into the skeleton forming passage through the second feeding passage 11, the hard skeleton is formed by the extrusion molding technology, and the soft material TPE is injected into the tubular molding passage through the first feeding passage 10, and then extruded molding technology is adopted. Forming a tubular foam structure, the two extrudates are separated from each other by the corresponding partition block in the first template 1, the second template 2 and the third template 3, and are initially combined in the fourth template 4 through the first communication cavity In the fifth template 5, the second communication chamber is finally combined to form a trolley foam strip. The invention has the advantages of simple structure, low mold opening cost and strong versatility, and the quality of the produced trolley foam is light.

Further as a preferred embodiment, After the first template 1 and the second template 2 are closed, a first molding cavity 8 communicating with the first feeding channel 10 and a second molding cavity 9 communicating with the second feeding channel 11 are formed, the first molding The cavity 8 and the second molding cavity 9 are separated by a first partitioning block on which a third molding cavity 12 communicating with the first molding cavity 8 and a fourth molding cavity communicating with the second molding cavity 9 are disposed 13. The third molding cavity 12 and the fourth molding cavity 13 are separated by a second partition block, and the second partition block separates two pressure-sensitive rubbers to avoid hard material PP and soft material TPE. A fifth molding cavity 14 communicating with the third molding cavity 12 and a sixth molding cavity 15 communicating with the fourth molding cavity 13 are disposed on the fourth template 4, and the fifth molding cavity 14 and the sixth molding cavity 15 are disposed. A third partitioning block is disposed between the first partitioning chamber and the sixth forming cavity 15 and the sixth connecting cavity 15 and the first connecting cavity are disposed at opposite ends of the third partitioning block. After entering the fourth template 4, the soft material TPE is initially formed into the thin wall structure of the soft part barrel, and the hard material PP is initially formed into the hard part bone. The support structure, the thin-wall structure and the support structure are initially connected by the first communication cavity, and the skeleton molding channel and the tubular molding channel form a seventh molding cavity 16 on the fifth template 5 through the second communication cavity, so that the thin The wall structure and the support structure are connected by the second communication cavity, and the fifth template 5 has a thickness of 10 to 15 mm, ensuring that the product is extruded under pressure stability.

Further, as a preferred embodiment, the inner dimension of the third molding cavity 12 gradually decreases along the first molding cavity 8 toward the fifth molding cavity 14, and the inner dimension of the fourth molding cavity 13 is along the second molding. The cavity 9 gradually becomes smaller toward the sixth molding cavity 15. The third template 3 is a transitional pressure plate, and one end of the third template 3 adjacent to the molding cavity of the second template 2 is larger than one end thereof adjacent to the fourth template 4, and the molding cavity in the third template 3 is formed in the adjacent template. The cavity is perfectly matched. The cavity of this shape is designed in the third template 3, and the flow rate of the rubber through the third template 3 is reduced to form a pressure to ensure that the rubber can flow in every corner.

Further as a preferred embodiment, the seventh molding cavity 16 includes two tubular molding cavities 17 and U-shaped cavities with a U-shaped longitudinal section, and the tubular molding channels are divided into two tubular molding cavities 17 by a fourth partitioning block. The U forming type includes two linearly shaped cavities 18 arranged in parallel, each of which is in communication with a tubular forming cavity 17 through a second communicating cavity, each of the forming cores 7 corresponding to one of the tubular forming cavities 17.

Further, as a preferred embodiment, the outer end surface of the first template 1 is arranged with a mounting plate 6 , one end of the forming core 7 is fixed on the mounting plate 6 , and the forming core 7 penetrates into the tubular forming channel. It is convenient to install and disassemble the forming core 7. The mounting plate 6 is fixed to the first template 1 by screws.

Further as a preferred embodiment, a convex cavity is arranged on the outer side wall of the linear molding cavity 18. After the extrusion molding, the convex cavity forms a mounting bump of the trolley foam strip, and after the pre-fixing of the mounting bump on the trolley, the trolley foam strip is fixed by bolts.

The above is a detailed description of the preferred embodiments of the present invention, but the invention is not limited to the embodiments, and various modifications and substitutions can be made by those skilled in the art without departing from the spirit of the invention. Such equivalent modifications or alternatives are intended to be included within the scope of the claims.

Claims

A trolley foam production jig, comprising: a first template, a second template, a third template, a fourth template and a fifth template arranged in sequence, the first template, the second template, the first After the three templates, the fourth template and the fifth template are clamped, a skeleton forming passage and a tubular forming passage are formed, and the skeleton forming passage and the tubular forming passage are communicated through the first communication cavity of the fourth template and the second communication cavity of the fifth template. Between the first template and the second template, a first feeding channel and a second feeding channel are arranged, the first feeding channel is in communication with the tubular forming channel, and the second feeding channel is in communication with the skeleton forming channel. Two shaped cores extending through the tubular forming channel are disposed within the tubular forming channel.
The trolley foam strip production jig according to claim 1, wherein the first template and the second template are closed to form a first molding cavity communicating with the first feeding passage and the second molding a second molding cavity communicating with the material passage, the first molding cavity and the second molding cavity being separated by a first partitioning block, wherein the third template is disposed with a third molding cavity communicating with the first molding cavity and the second a fourth molding cavity in which the molding cavity communicates, the third molding cavity and the fourth molding cavity are separated by a second partitioning block, and the fourth molding cavity is arranged on the fourth template to communicate with the third molding cavity and the fourth molding cavity a sixth molding cavity communicating with the cavity, a third partitioning block disposed between the fifth molding cavity and the sixth molding cavity, the first communication cavity being distributed on two sides of the third partitioning block, and the first communicating cavity communicating And a framing forming passage and a tubular forming passage forming a seventh forming cavity on the fifth template through the second communicating cavity.
The trolley foam strip production jig according to claim 2, wherein the inner dimension of the third molding cavity gradually decreases toward the fifth molding cavity along the first molding cavity, and the fourth molding The inner dimension of the cavity tapers along the second molding cavity toward the sixth molding cavity.
The trolley foam strip production jig according to claim 2, wherein said seventh molding cavity comprises two tubular molding cavities and U-shaped cavities having a U-shaped longitudinal section, said U-forming type comprising Two linearly-shaped molding cavities arranged in parallel, each of which is in communication with a tubular molding cavity through a second communication cavity, each of which forms one of the tubular molding cavities.
The trolley foaming strip production jig according to claim 1 or 4, wherein: a mounting plate is disposed on an outer end surface of the first template, and one end of the forming core is fixed on the mounting plate, The shaped core is threaded into the tubular forming channel.
The trolley foam strip production jig according to claim 4, wherein a convex cavity is disposed on the outer side wall of the linear molding cavity.