阅读说明：本技术 分体成型式鞋底、用于制造该鞋底的成型模具及生产工艺 (Split forming type sole, forming die for manufacturing sole and production process ) 是由 张小海 于 2019-08-16 设计创作，主要内容包括：本发明提供一种分体成型式鞋底、用于制造该鞋底的成型模具及生产工艺,包括由TPU注塑成型体分别发泡成型的中心踩踏体和围边,所述围边环设于中心踩踏体的外周与中心踩踏体组合形成鞋中底。本发明采用分别发泡成型出中心踩踏体和围边,通过胶水将围边粘接在中心踩踏体的外周以组成鞋底,为了遮盖中心踩踏体和围边的粘接间隙,还在中心踩踏体和围边的下侧面粘接鞋大底,使分体成型粘接成的鞋底与普通鞋底在外观上保持一致,但本发明这种采用分体发泡成型的鞋底结构,通过将整个鞋底拆分成两部分分别发泡成型,可大大缩短发泡时间,避免了传统一体成型制成的鞋底需要较长发泡时间的缺点,生产效率更高。(The invention provides a split forming type sole, a forming die for manufacturing the sole and a production process. The invention adopts the central treading body and the surrounding edge which are respectively formed by foaming, the surrounding edge is bonded on the periphery of the central treading body by glue to form the sole, and in order to cover the bonding gap between the central treading body and the surrounding edge, the undersides of the central treading body and the surrounding edge are bonded with the outsole, so that the separately formed and bonded sole is consistent with the common sole in appearance.)

1. The utility model provides a components of a whole that can function independently shaping formula sole which characterized in that: include by TPU injection moulding body respectively foam moulding's center step on body and surrounding edge, the surrounding edge ring is located the center and is stepped on the periphery of the body and the center and step on the body combination formation shoes insole, and surrounding edge and center are trampled and are equipped with the tie coat between the body, the front end of surrounding edge is equipped with the opening so that open the surrounding edge and detain the surrounding edge and step on body periphery at the center, components of a whole that can function independently shaping formula sole is still trampled the rubber shoes outsole of body and surrounding edge downside including locating the center.

2. the split molded shoe sole according to claim 1, wherein: the outer side wall of the central treading body is provided with an annular flange in an outward extending mode, an annular groove used for buckling the annular flange is formed in the inner side wall of the surrounding edge, and the annular flange and the annular groove are of semicircular structures.

3. the split molded shoe sole according to claim 1, wherein: the inner contour of the surrounding edge is matched with the outer contour of the central treading body, and the inner perimeter of the surrounding edge is smaller than the outer perimeter of the central treading body to form an opening.

4. The split molded shoe sole according to claim 1, wherein: the central treading body and the surrounding edge are both made of TPU materials through injection molding to form an initial blank and then foaming molding.

5. The split molded shoe sole according to claim 1, wherein: the central treading body is provided with a plurality of air holes so as to improve the foaming efficiency.

6. a molding die for manufacturing the split molded shoe sole according to any one of claims 1 to 5, characterized in that: including injection mold and foaming mold, be equipped with in the injection mold and be used for injection molding to go out the first chamber of moulding plastics of the body initial embryo of stepping on in the center and be used for injection molding to go out the second chamber of moulding plastics of surrounding edge initial embryo, be equipped with in the foaming mold and be used for the foaming molding to go out the first foaming chamber of the body of stepping on in the center and be used for the foaming molding to go out the surrounding edge and trample the second foaming chamber that the body periphery constitutes a complete insole in order to bond at the center.

7. The molding die for manufacturing a split molded shoe sole according to claim 6, wherein: the first injection molding cavity is a cavity matched with the shape of the initial blank of the central trampling body, the second injection molding cavity is a cavity matched with the shape of the initial blank of the surrounding edge, and the second injection molding cavity is internally provided with a small blocking block for forming the opening of the surrounding edge.

8. The molding die for manufacturing a split molded shoe sole according to claim 6, wherein: the first foaming cavity is a die cavity matched with the shape of the central treading body, the second foaming cavity is a die cavity matched with the shape of the surrounding edge, and a large plugging block for forming the opening of the surrounding edge is arranged in the second foaming cavity.

9. The molding die for manufacturing a split molded shoe sole according to claim 6, wherein: the forming die further comprises a second injection die for injection molding of the rubber shoe outsole, a third injection molding cavity for injection molding of the rubber shoe outsole is arranged in the second injection die, and the third injection molding cavity is a die cavity matched with the rubber shoe outsole in shape.

10. a production process for manufacturing the split molding type shoe sole of any one of claims 1 to 5, characterized in that: the method comprises the following steps:

1) A central treading body primary blank and a surrounding edge primary blank are formed by injection molding of a TPU material;

2) foaming and molding the primary blank of the central treading body and the primary blank of the surrounding edge into the central treading body and the surrounding edge by a physical or chemical foaming process, wherein the front end of the surrounding edge is provided with an opening;

3) Coating glue on the periphery of the central treading body, opening the opening of the surrounding edge, buckling the opening on the periphery of the central treading body, and bonding the surrounding edge with the central treading body;

4) Glue is smeared on the central treading body and the lower side surface of the surrounding edge, and the rubber shoe outsole is bonded on the central treading body and the lower side surface of the surrounding edge.

Technical Field

The invention relates to the technical field of soles, in particular to a split forming type sole, a forming die for manufacturing the sole and a production process.

background

the E-TPU foamed material is a novel polymer material formed by aggregating a plurality of TPU foamed small balls with high elasticity and light weight, consists of amorphous and rigid molecular chains, and does not contain any flexible chain segment in the molecular structure; therefore, the ETPU material not only has the strength and dimensional stability of amorphous resin, but also has the chemical resistance, fatigue resistance and wear resistance of crystalline resin. After foaming, the granular material expands 5-8 times in volume, the diameter of cells is not more than 30-300 microns, the size and shape of the granular material are the same as that of popcorn, and the density of the granular material per cubic centimeter is 0.15-0.25 g, so the granular material is called the popcorn in the industry; the TPU material overcomes the defects of heavy weight, high hardness, poor damping performance and the like of the TPU material, and has the advantages of lighter weight, stronger air permeability, environmental protection, wear resistance, high elasticity and yellowing resistance.

the E-TPU material has two preparation modes, one is to firstly foam and form a plurality of TPU particles into a foaming particle forming body once, then carry out secondary foaming forming and aggregation on the foaming particle forming body to form a finished product, and the other is to directly carry out injection molding to form a TPU injection molding body, and then carry out primary foaming forming on the TPU injection molding body to form the finished product. The foaming forming process has two physical and chemical modes, wherein the physical foaming is to enable the supercritical fluid to permeate into the TPU injection forming body under the environment of high temperature and high pressure, and then enable the TPU injection forming body to form bubble cores for expansion and shaping through rapid pressure relief, so that a foaming product is obtained. The traditional insole is basically manufactured by physically foaming and forming a TPU injection molding body, and in the foaming process, in order to ensure that the supercritical fluid can completely permeate into the TPU injection molding body, so that the foaming quality is ensured, a longer time is usually needed for the supercritical fluid to completely permeate into the TPU injection molding body, so that the traditional insole manufacturing method has the defects of long foaming time and low production efficiency.

Disclosure of Invention

The first purpose of the invention is to provide a split forming type sole which can effectively shorten the foaming time and improve the production efficiency aiming at the defects.

the first scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a components of a whole that can function independently shaping formula sole, includes that the body is stepped on with the surrounding edge by TPU injection moulding body foaming respectively's center, the surrounding edge ring is located the center and is stepped on the periphery of the body and the center and step on body combination formation shoes insole, and the surrounding edge is trampled with the center and is equipped with the tie coat between the body, the front end of surrounding edge is equipped with the opening so that open the surrounding edge and detain the surrounding edge and step on body periphery at the center, components of a whole that can function independently shaping formula sole is still trampled the rubber outsole of body and surrounding edge downside including locating the center.

Furthermore, in order to align and mount the surrounding edge and the central treading body, the surrounding edge is ensured to be accurately attached to the central treading body; the outer side wall of the central treading body is provided with an annular flange in an outward extending mode, an annular groove used for buckling the annular flange is formed in the inner side wall of the surrounding edge, and the annular flange and the annular groove are of semicircular structures.

Furthermore, in order to form an opening, the surrounding edge can be opened, so that the surrounding edge can be bonded around the periphery of the central treading body, and the bonding difficulty is reduced; the inner contour of the surrounding edge is matched with the outer contour of the central treading body, and the inner perimeter of the surrounding edge is smaller than the outer perimeter of the central treading body to form an opening.

furthermore, in order to ensure the softness and comfort of the sole, the sole is lighter to wear, better in air permeability, better in damping performance, higher in wear resistance and longer in service life; the central treading body and the surrounding edge are both made of TPU materials through injection molding to form an initial blank and then foaming molding.

Further, the ETPU foaming process generally adopts a physical or chemical way to foam and form TPU particles, wherein physical foaming is to permeate supercritical fluid into TPU particles under a high-temperature and high-pressure environment, and then to quickly release pressure to form bubble nuclei inside the TPU particles to expand and shape, so as to ensure that the inside of a central treading body is fully contacted with the supercritical fluid, thereby ensuring that the central treading body is fully foamed and formed, shortening the time required by foaming and forming, and improving the production efficiency; the central treading body is provided with a plurality of air holes so as to improve the foaming efficiency.

the second purpose of the invention is to provide a forming mold for manufacturing split forming type soles, which can effectively shorten the foaming time and improve the production efficiency aiming at the defects.

The second scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a forming die for making components of a whole that can function independently shaping formula sole, includes injection mold and foaming mold, be equipped with in the injection mold and be used for injection molding to go out the first chamber of moulding plastics of the body initial embryo of stepping on in the center and be used for injection molding to go out the second chamber of moulding plastics of the body initial embryo of surrounding edge, be equipped with in the foaming mold and be used for foaming molding to go out the first foaming chamber of the body of stepping on in the center and be used for foaming molding to go out the surrounding edge and trample the second foaming chamber that constitutes a complete insole in the body periphery in the center.

Furthermore, in order to directly form the central treading body initial blank and the surrounding edge initial blank by injection molding, the central treading body initial blank and the surrounding edge initial blank are directly formed into the central treading body and the surrounding edge by foaming in the following process, so that the production efficiency is improved; the first injection molding cavity is a mold cavity matched with the shape of the initial blank of the central trampling body, the second injection molding cavity is a mold cavity matched with the shape of the initial blank of the surrounding edge, and an open-ended blocking block used for forming the surrounding edge is arranged in the second injection molding cavity.

Further, in order to foam and form the initial blank of the central treading body and the initial blank of the surrounding edge into the central treading body and the surrounding edge, the central treading body and the surrounding edge are bonded together subsequently; the first foaming cavity is a die cavity matched with the shape of the central treading body, the second foaming cavity is a die cavity matched with the shape of the surrounding edge, and an opening blocking block used for forming the surrounding edge is arranged in the second foaming cavity.

Furthermore, in order to injection mold the rubber shoe outsole, the rubber shoe outsole is bonded with the central treading body and the surrounding edge, so that the manufactured shoe sole and the common shoe sole have the same appearance, but the manufacturing difficulty is lower, the production efficiency is higher, the cost is lower, and the economic benefit can be generated; the forming die further comprises a second injection die for injection molding of the rubber shoe outsole, a third injection molding cavity for injection molding of the rubber shoe outsole is arranged in the second injection die, and the third injection molding cavity is a die cavity matched with the rubber shoe outsole in shape.

The third purpose of the invention is to provide a production process for manufacturing the split forming type sole, which can effectively shorten the foaming time and improve the production efficiency aiming at the defects.

The third scheme adopted by the invention for solving the technical problem is as follows: a production process for manufacturing split molding type soles comprises the following steps:

1) A central treading body primary blank and a surrounding edge primary blank are formed by injection molding of a TPU material;

2) foaming and molding the primary blank of the central treading body and the primary blank of the surrounding edge into the central treading body and the surrounding edge by a physical or chemical foaming process, wherein the front end of the surrounding edge is provided with an opening;

3) Coating glue on the periphery of the central treading body, opening the opening of the surrounding edge, buckling the opening on the periphery of the central treading body, and bonding the surrounding edge with the central treading body;

4) Glue is smeared on the central treading body and the lower side surface of the surrounding edge, and the rubber shoe outsole is bonded on the central treading body and the lower side surface of the surrounding edge.

Compared with the prior art, the invention has the following advantages:

(1) The invention adopts the foaming molding of the central treading body and the surrounding edge respectively, the central treading body is the main part of the sole contacting with the foot, the surrounding edge is bonded on the periphery of the central treading body through glue to form a shoe insole, in order to cover the bonding gap between the central treading body and the surrounding edge, the shoe outsole is bonded on the lower side surfaces of the central treading body and the surrounding edge, so that the appearance of the shoe sole formed and bonded in a split mode is consistent with that of the common shoe sole, however, the sole structure adopting the split foaming molding of the invention is formed by splitting the whole insole into two parts which are respectively foamed and molded, can greatly shorten the foaming time, avoids the defect that the insole which is integrally formed in the prior art needs longer foaming time, has higher production efficiency, moreover, the surrounding edge is provided with an opening, the surrounding edge can be opened during bonding, and the central treading body is bonded for one circle, so that the manufacturing difficulty is low, and the operation is convenient;

(2) According to the invention, the injection mold and the foaming mold are adopted, the central treading body initial blank and the surrounding edge initial blank are firstly formed by injection molding, then the central treading body initial blank and the surrounding edge initial blank are formed by foaming, and a complete insole is divided into two parts to be respectively formed by foaming, so that the time required by foaming forming can be greatly shortened, and the formed surrounding strip is provided with an opening, the surrounding edge can be opened during bonding, and the bonding can be carried out around the central treading body for one circle, so that the manufacturing difficulty is small, and the operation is convenient;

(3) The invention adopts a novel sole production process, the central treading body and the surrounding edge are formed by split molding, then the central treading body and the surrounding edge are bonded and combined to form the insole, the whole insole is split into two parts to be foamed and molded respectively, so that the foaming time can be greatly shortened, the defect that the insole manufactured by traditional integrated molding needs longer foaming time is avoided, the production efficiency is higher, and in order to cover the bonding gap between the central treading body and the surrounding edge, the outsole is bonded on the lower side surface of the central treading body and the surrounding edge, so that the appearance of the sole formed by split molding and bonding is consistent with that of a common sole.

Drawings

the invention will be further illustrated with reference to the following examples with reference to the accompanying drawings:

FIG. 1 is a schematic view of a split molded sole;

FIG. 2 is a bottom view of the split molded sole;

FIG. 3 is an exploded view of the split molded sole structure;

FIG. 4 is a schematic structural view of an injection mold;

fig. 5 is a schematic structural view of a foaming mold.

In the figure: 1-surrounding edge; 2-central tread; 3-rubber shoe outsole; 4-an annular groove; 5-opening; 6-an annular flange; 7-foaming mould; 8-a second foaming chamber; 9-a first foaming chamber; 10-a second injection molding cavity; 11-injection molding; 12-first injection molding cavity.

Detailed Description

the invention is described in detail below with reference to the drawings and specific examples: