阅读说明：本技术 一种含内衬鞋具的成型工艺 (Forming process of lining-containing shoe ) 是由 曾家铭 于 2021-08-10 设计创作，主要内容包括：本发明公开了一种含内衬鞋具的成型工艺,包括：于预置有半成型外壳的组合式外模内,置入套设有内衬的成型内仁；做合模动作,使第一外模和第二外模内的半成型外壳分别与所述内衬贴合；加热使所述半成型外壳硫化成型,并与所述内衬结合形成含内衬鞋具。本发明省去了将内衬置于胶壳鞋身内再额外粘贴或缝制的操作,实现了通过成型的方式制成具有内衬的橡胶鞋；同时,有效地提高了含内衬鞋具的生产效率,降低了生产成本；由于不依赖于人工粘贴及缝制工序,因而能够确保含内衬鞋具的成品质量,有利于改善用户体验。(The invention discloses a forming process of lining-containing shoes, which comprises the following steps: placing a molded inner core sleeved with a lining into a combined outer mold pre-provided with a semi-molded shell; performing die assembly to enable the semi-formed shells in the first outer die and the second outer die to be respectively attached to the lining; heating to vulcanize the semi-formed shell and combine with the lining to form the lining-containing footwear. The invention omits the operation of additionally sticking or sewing the lining in the rubber-shell shoe body, and realizes the manufacture of the rubber shoe with the lining by a molding mode; meanwhile, the production efficiency of the lining-containing shoe is effectively improved, and the production cost is reduced; because the method does not depend on manual sticking and sewing procedures, the quality of the finished product of the lined shoe can be ensured, and the user experience can be improved.)

1. A forming process of a shoe with a lining is used for realizing the combined forming of a shell and the lining of the shoe, and comprises the following steps:

providing: the combined outer die comprises a first outer die and a second outer die; the inner forming core can be arranged in the combined outer die and matched with the combined outer die to carry out die closing or die opening actions, and is used for sleeving the inner lining; placing the formed inner core in the combined outer mold, and forming a shoe body forming space between the formed inner core and the combined outer mold after mold assembly, wherein the shoe body forming space is matched with the combined shape of the shoe shell and the lining;

the forming process of the lining-containing shoe comprises the following steps:

placing a molded inner core sleeved with a lining into a combined outer mold pre-provided with a semi-molded shell;

performing die assembly to enable the semi-formed shells in the first outer die and the second outer die to be respectively attached to the lining;

heating to vulcanize the semi-formed shell and combine with the lining to form the lining-containing footwear.

2. The process of forming lined footwear according to claim 1, further providing: the preset inner core can be arranged in the combined outer die and matched with the combined outer die to carry out die closing or opening actions; placing a preset inner core in a combined outer mold, and forming a shell molding space between the preset inner core and the combined outer mold after mold assembly, wherein the shell molding space is matched with the shape of the shell of the shoe tool;

the forming process of the lining-containing footwear further comprises the following steps:

placing the preset inner core in the combined outer mold and performing mold closing action;

injecting hot-melt adhesive into the shell molding space to form a semi-molded shell adhered to the inner walls of the first outer mold and the second outer mold;

and opening the mold to separate the semi-molded shell along the joint of the first outer mold and the second outer mold to form two parts moving along with the first outer mold and the second outer mold.

3. The process of claim 1, wherein said preformed inner core has a shape and size that is the same as the shape and size of said formed inner core and said inner lining when assembled;

the first outer die and the second outer die are hot dies, and the molding inner core is a cold die.

4. The process of claim 1, wherein the casing half is in an unshaped, half-molded state between a molten state and a cured, molded state;

the rubber material is rubber, and the lining is a foaming layer made of SBR.

5. The process of forming lined footwear according to claim 1, further comprising:

and performing smooth surface treatment on the outer surface of the preset inner kernel to enable the outer surface of the preset inner kernel to be a smooth surface.

6. The molding process of the lining-containing footwear according to claim 5, wherein a molding groove for molding a semi-molded rubber shell is provided on the opposite side of the first outer mold and the second outer mold;

the forming process of the lining-containing footwear further comprises the following steps:

and carrying out rough surface treatment on the inner wall of the forming groove to enable the groove wall of the forming groove to be a rough surface.

7. The process of claim 6, wherein the smooth surface treatment is Teflon plating and the rough surface treatment is sand blasting.

8. The process of claim 2, wherein the pre-positioned inner core is provided with a first spacer;

placing a preset inner core in the combined outer die, and after die assembly, enabling the shell forming space to be separated into a separation space by the first separating part; the separated space is used for forming the partial half-formed shell;

and placing the formed inner core sleeved with the lining into a combined outer die preset with the partial semi-formed shell, fitting the partial semi-formed shell with the lining after die assembly, wherein the lining is provided with a part exposed out of the partial semi-formed shell.

9. The process for forming a lined footwear article of claim 2, wherein a second divider is provided on the pre-positioned inner core, the second divider being located at a junction of the first outer mold and the second outer mold after the molds are closed;

the separation of half-molded shell along the junction of first external mold and second external mold includes:

the semi-formed shells are separated along the second divider.

10. The forming process of the lining-containing shoe mold as claimed in claim 1, wherein a top mold and a bottom mold are further provided, a sliding groove is arranged on the top mold or the bottom mold, the sliding groove is arranged between the first outer mold and the second outer mold, and the extending direction of the sliding groove is perpendicular to the moving direction of the first outer mold and the second outer mold when the combined mold is closed;

and when the preset inner core/formed inner core is placed in the combined outer die, the preset inner core/formed inner core slides to a position between the first outer die and the second outer die along the sliding groove.

Technical Field

The invention relates to the technical field of shoe production, in particular to a forming process of a shoe with a lining.

Background

The shoes made of rubber have the performances of oil resistance, skid resistance, high temperature resistance, cold resistance and the like, so that the rubber shoes can be widely applied to products such as rain shoes, labor protection shoes, outdoor shoes and the like. In the prior art, the forming of rubber shoes is not mature enough in process, and the rubber shell shoe body on the outer side is manufactured by adopting a vulcanized shoe forming process through manual operation, then the lining is placed in the rubber shell shoe body, and the rubber shell shoe body and the lining are connected in a manual sticking or sewing mode, so that the finished product shoe with the lining can be obtained. Aforementioned vulcanized shoe forming process steps are loaded down with trivial details, and need additionally increase the process for placing of inside lining, need consume more manpower and materials, lead to manufacturing cost higher, are unfavorable for the batch production of finished product shoes utensil.

The forming process of plastic shoes is mature, and many manufacturers use plastic as material to make shoes with linings. However, the performance of the plastic is different from that of rubber, and the plastic shoes are far insufficient in oil resistance, skid resistance, high temperature resistance, cold resistance and other performances, so that the plastic shoes are still difficult to replace rubber shoes.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a forming process of a shoe with a lining, which solves the problem that the rubber shoe with the lining is difficult to be made in a forming mode in the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a forming process of a shoe with a lining is used for realizing the combined forming of a shell and the lining of the shoe, and comprises the following steps:

providing: the combined outer die comprises a first outer die and a second outer die; the inner forming core can be arranged in the combined outer die and matched with the combined outer die to carry out die closing or die opening actions, and is used for sleeving the inner lining; placing the formed inner core in the combined outer mold, and forming a shoe body forming space between the formed inner core and the combined outer mold after mold assembly, wherein the shoe body forming space is matched with the combined shape of the shoe shell and the lining;

the forming process of the lining-containing shoe comprises the following steps:

placing a molded inner core sleeved with a lining into a combined outer mold pre-provided with a semi-molded shell;

performing die assembly to enable the semi-formed shells in the first outer die and the second outer die to be respectively attached to the lining;

heating to vulcanize the semi-formed shell and combine with the lining to form the lining-containing footwear.

Optionally, the forming process of the lining-containing footwear further provides: the preset inner core can be arranged in the combined outer die and matched with the combined outer die to carry out die closing or opening actions; placing a preset inner core in a combined outer mold, and forming a shell molding space between the preset inner core and the combined outer mold after mold assembly, wherein the shell molding space is matched with the shape of the shell of the shoe tool;

the forming process of the lining-containing footwear further comprises the following steps:

placing the preset inner core in the combined outer mold and performing mold closing action;

injecting hot-melt adhesive into the shell molding space to form a semi-molded shell adhered to the inner walls of the first outer mold and the second outer mold;

and opening the mold to separate the semi-molded shell along the joint of the first outer mold and the second outer mold to form two parts moving along with the first outer mold and the second outer mold.

Optionally, the shape and size of the preset inner core are the same as the shape and size of the combined formed inner core and the lining;

the first outer die and the second outer die are hot dies, and the molding inner core is a cold die.

Optionally, in the molding process of the lined footwear, the semi-molded shell is in an unmolded semi-molded state, and the semi-molded state is between a molten state and a solidified molded state;

the rubber material is rubber, and the lining is a foaming layer made of SBR.

Optionally, the forming process of the lined footwear further includes:

and performing smooth surface treatment on the outer surface of the preset inner kernel to enable the outer surface of the preset inner kernel to be a smooth surface.

Optionally, in the molding process of the lining-containing footwear, a molding groove for molding a semi-molded rubber shell is formed in one side of the first outer mold opposite to the second outer mold;

the forming process of the lining-containing footwear further comprises the following steps:

and carrying out rough surface treatment on the inner wall of the forming groove to enable the groove wall of the forming groove to be a rough surface.

Optionally, in the molding process of the lining-containing footwear, the smooth surface treatment is teflon electroplating, and the rough surface treatment is sand blasting.

Optionally, in the molding process of the lining-containing footwear, a first separator is arranged on the preset inner core;

placing a preset inner core in the combined outer die, and after die assembly, enabling the shell forming space to be separated into a separation space by the first separating part, wherein the separation space is used for forming a partial semi-formed shell;

and placing the formed inner core sleeved with the lining into a combined outer die preset with the partial semi-formed shell, fitting the partial semi-formed shell with the lining after die assembly, wherein the lining is provided with a part exposed out of the partial semi-formed shell.

Optionally, in the molding process of the lining-containing shoe tool, a second partition is arranged on the preset inner core, and the second partition is located at the joint of the first outer mold and the second outer mold after the mold closing;

the separation of half-molded shell along the junction of first external mold and second external mold includes:

the semi-formed shells are separated along the second divider.

Optionally, the forming process of the shoe mold with the lining further comprises providing a top mold and a bottom mold, wherein a sliding groove is formed in the top mold or the bottom mold, the sliding groove is formed between the first outer mold and the second outer mold, and the extending direction of the sliding groove is perpendicular to the moving direction of the first outer mold and the second outer mold when the combined mold is closed;

and when the preset inner core/formed inner core is placed in the combined outer die, the preset inner core/formed inner core slides to a position between the first outer die and the second outer die along the sliding groove.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a forming process of a shoe with a lining, which is characterized in that a formed inner core sleeved with the lining is matched with a combined outer mold to be closed, a semi-formed shell and the lining are combined and vulcanized and formed after heating, and thus the shoe with the lining is formed. The invention omits the operation of additionally sticking or sewing the lining in the rubber-shell shoe body, and realizes the manufacture of the rubber shoe with the lining by a molding mode; meanwhile, the invention effectively improves the production efficiency of the lining-containing shoes and reduces the production cost; because the method does not depend on manual sticking and sewing procedures, the quality of the finished product of the lined shoe can be ensured, and the user experience can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in 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 for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural view of a mold for forming a lined footwear article according to the present invention;

FIG. 2 is a schematic view of another mold structure for forming lined footwear according to the present invention;

FIG. 3 is a schematic view of another mold for forming lined footwear according to the present invention;

FIG. 4 is a flow chart of a forming process for a lined footwear article according to the present invention;

FIG. 5 is a further flowchart of a process for forming a lined footwear article according to the present invention;

FIG. 6 is a schematic view of a mold for forming a pair of lined footwear according to the present invention.

In the above figures: 11. a first outer mold; 12. a second outer mold; 13. injecting a glue flow channel; 14. forming the inner core; 15. a chute; 16. a runner pipe; 17. a clamping head; 18. presetting an inner kernel; 181. a second separator; 191. carrying out top die; 192. bottom die; 20. the shell forms the space.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below 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 given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Referring to fig. 1 to fig. 3, an embodiment of the present invention provides a forming process for a shoe with a lining, which is used to achieve efficient production of the shoe with the lining and achieve the purpose of ensuring product quality.

In this embodiment, a combined outer mold is provided, which includes a first outer mold 11 and a second outer mold 12; and providing a preset inner core 18 and a forming inner core 14 which can be respectively arranged in the combined outer die and matched with the combined outer die to carry out die closing or die opening.

When the preset inner core 18 is placed in the combined outer mold, a shell forming space 20 matched with the shape of the shell of the shoe tool is formed between the preset inner core 18 and the combined outer mold after mold closing; when the formed inner core 14 is placed in the combined outer mold, a shoe body forming space matched with the combination shape of the outer shell and the inner lining of the shoe tool is formed between the formed inner core 14 and the combined outer mold after mold closing.

The preset inner core 18 is used for matching with the combined type external mold to mold so as to pre-mold the semi-molded shell; it will be appreciated that the semi-formed shell is cured to form the finished footwear shell part. The inner molding core 14 is used for sleeving the inner lining and combining and molding the semi-molded shell and the inner lining when the combined external mold is matched to mold so as to obtain the shoe with the inner lining.

In this embodiment, the shape and size of the pre-positioned inner core 18 is the same as the shape and size of the molded inner core 14 and liner after assembly; alternatively, the pre-configured inner core 18 may be larger in size than the molded inner core 14 and liner combined. Thus, when the combination overmold with the attached overmold shell is combined with the molded inner core 14, the resulting space is just able to accommodate the liner, or is narrower than the liner; therefore, the full contact between the lining and the semi-formed shell is ensured, and the adhesive force between the lining and the semi-formed shell is improved. Meanwhile, the pressure of the first outer die 101 and the second outer die 102 on the inner lining of the shoe tool during die assembly is controlled by controlling the size of the preset inner core 15, so that the semi-formed rubber shell is prevented from permeating into the inner lining of the shoe tool due to overlarge pressure.

The lining is a foaming layer made of SBR material, and the material has higher air permeability and wrapping property, so that the shoe has more excellent comfort level and heat preservation performance; in addition, the foamed structure of the inner liner can increase the adhesion with the semi-formed shell. In this embodiment, the first outer mold 101 and the second outer mold 102 are hot mold members, and the molding inner core 11 is a cold mold member, so that the liner of the footwear can be prevented from shrinking and deforming at high temperature while ensuring effective combination of the liner and the semi-molded plastic shell.

Referring to fig. 4, the forming process of the lined footwear provided in this embodiment includes the following steps:

s1, placing the molded inner core 14 sleeved with the lining into the combined outer mold pre-provided with the semi-molded shell;

s2, performing mold closing action to enable the semi-formed shells in the first outer mold 11 and the second outer mold 12 to be respectively attached to the lining;

and S3, heating to vulcanize and mold the semi-molded outer shell, and combining the semi-molded outer shell with the lining to form the lining-containing shoe.

Specifically, the half mold casing has a half mold shape which is between a molten shape and a solidified shape, has a certain fluidity, and thus can adhere to the first outer mold 11 and the second outer mold 12.

In this embodiment, the semi-formed shell may be pre-placed in the first outer mold 11 and the second outer mold 12 by manual insertion, or placed outside the formed inner core 11 with the lining of the footwear; the first outer mold 11 and the second outer mold 12 may be formed by injection molding, and the following description will further describe the embodiment of the present invention by taking the injection molding as an example.

Referring to fig. 5, before step S1, the forming process of the lining-containing footwear provided by this embodiment further includes the following steps:

s01, placing the preset inner core 18 in the combined outer mold and performing mold closing action;

s02, injecting hot-melt adhesive into the shell molding space 20, and after half molding, forming a half-molded shell adhered to the inner walls of the first outer mold 11 and the second outer mold 12;

and S03, opening the mould to separate the semi-formed shell along the joint of the first outer mould 11 and the second outer mould 12 to form two parts moving along with the first outer mould 11 and the second outer mould 12 respectively.

Through steps S01 to S03, the premolding of the half molded shell is performed in the shell molding space 20 in the split type outer mold.

After the semi-formed rubber shell is formed, replacing the preset inner core 18 with the formed inner core 14, and then placing the formed inner core 14 between the first outer mold 11 and the second outer mold 12 which are preset with the semi-formed rubber shell; after the mold is closed, the semi-formed shell and the lining of the shoe forming space are attached, then the semi-formed shell and the lining are combined and vulcanized and formed by heating, the bonding force between the semi-formed shell and the lining of the shoe can be enhanced, and the formed shoe containing the lining of the shoe can be obtained after forming.

Further, in this embodiment, the rubber material used for forming the outer shell of the footwear is rubber, so the forming process of the footwear with lining provided in this embodiment can be used to form the footwear with lining.

The half mold shell of the half mold shape formed in step S02 is formed in a half mold shape between a molten shape and a solidified shape, has a certain fluidity and surface tension, can adhere to the first outer mold 11 and the second outer mold 12, and is separated when the mold opening operation is performed, so that two parts moving along with the first outer mold 11 and the second outer mold 12 are formed.

In order to avoid the influence on the quality of the finished product caused by the adhesion of the semi-formed shell inside the pre-arranged inner core 18 during the mold opening operation, in this embodiment, the outer surface of the pre-arranged inner core 18 is subjected to a smooth surface treatment, so that the outer surface of the pre-arranged inner core 18 is a smooth surface.

Specifically, the smooth surface treatment is teflon electroplating, and the smooth surface treatment can also be carried out in a grinding and polishing way.

Further, in this embodiment, forming grooves for presetting or forming the semi-formed rubber shell are respectively disposed at opposite sides of the first outer mold 11 and the second outer mold 12; in order to increase the adhesive force between the semi-formed shell and the forming groove, the inner wall of the forming groove is subjected to rough surface treatment, so that the groove wall of the forming groove is in a rough surface.

Specifically, the rough surface treatment is sand blasting treatment, and lines can be formed on the groove wall of the forming groove in an engraving manner, so that the surface roughening of the groove wall of the forming groove is realized.

In this embodiment, the inner core 18 is provided with a first separator; placing the preset inner core 18 in the combined outer mold, and after the mold is closed, separating the shell forming space 20 into a separated space by the first separating part; when the hot-melt adhesive is injected into the housing forming space 20, the hot-melt adhesive is filled in the separated space to form a partial semi-formed housing.

The formed inner core 14 with the lining is placed in a combined outer mold with a preset part of the semi-formed shell, the semi-formed shell is attached to the lining after the mold is closed, and the lining has a part exposed out of the part of the semi-formed shell. By using the pre-positioned inner core 18 with the first partition, the lining of the lined footwear can have a portion exposed to the outer shell, thereby achieving multi-functionalization of the footwear.

It will be understood that the first partition, on the pre-arranged inner core 18, may extend circumferentially in a region corresponding to the ankle, or may extend in a direction towards the upper of the shoe, and may be shaped according to specific requirements.

In addition, a second convex separating element 181 is arranged on the preset inner core 18, and the second separating element 181 is located at the joint of the first outer mold 11 and the second outer mold 12 after the mold closing. Through setting up this second separator 181 for when doing the die sinking action, even separation can be realized along second separator 181 to the half-formed shell, is favorable to in the follow-up compound die, and the surface of the half-formed shell faying surface of two parts is regular, and then is favorable to ensureing finished product quality.

Further, the forming process of the lining-containing shoe mold provided by this embodiment further provides a top mold 191 and a bottom mold 192, the top mold 191 or the bottom mold 192 is provided with a sliding groove 15, the sliding groove 15 is disposed between the first outer mold 11 and the second outer mold 12, and the extending direction of the sliding groove 15 is perpendicular to the moving direction of the first outer mold 11 and the second outer mold 12 when the combined mold is closed.

In steps S1 and S01, the preset inner core 18/the formed inner core 14 is placed in the combined outer mold and slides along the slide slot 15, so that the preset inner core can be placed between the first outer mold 11 and the second outer mold 12 to realize the mold closing action in a matching manner; it can also be moved away from the position between the first outer mold 11 and the second outer mold 12 to cooperate in effecting the mold opening action.

In this embodiment, the sliding groove 15 is a T-shaped sliding groove 15, and the T-shaped sliding groove 15 can improve the smoothness and stability of the sliding motion.

Further, in the present embodiment, when the mold closing operation is performed, the glue injection flow channel 13 is formed at the joint surface of the first outer mold 11 and the second outer mold 12, and the material opening of the glue injection flow channel 13 is communicated with the glue injection flow channel 13 through a flow channel pipe 16.

The glue injection flow channel 13 is a bent cone, and the conical opening of the glue injection flow channel is communicated with the shoe forming space, so that the flow rate of the rubber glue can be more uniform and slower, the uniform thickness of each part of the semi-formed glue shell is ensured, and the quality of the formed shoe is favorably ensured.

Furthermore, the glue injection flow channel 13 is a spiral cone, so that the adhesive force between each part of the surface of the semi-finished product glue shell and the first outer mold 11 or the second outer mold 12 can be more uniform, and the formed forming shoe can be smoothly stripped from the first outer mold 11 and the second outer mold 12.

In this embodiment, the top mold 191 or the bottom mold 192 is provided with a snap joint 17, and the runner pipe 16 is sleeved on the snap joint 17; an inner step is formed on the inner pipe wall at one end of the runner pipe 16, and the inner step is connected with the clamping joint 17 in a clamping manner; when the combined mold is opened, the bottom mold 192 and the top mold 191 move back to back, and the runner pipe 16 can be driven by the clamping joint 17 on the top mold 191 or the bottom mold 192 to move so as to be separated from the glue injection runner 13. The clamping head 17 may be disposed on the top mold 191 or the bottom mold 192, and may be adjusted according to actual operation requirements.

Referring to fig. 6, it can be understood that a combination of the first outer mold 11, the second outer mold 12 and the molding inner core 14 can be used to realize a molding footwear, two of the above combinations can be provided according to actual requirements to realize simultaneous molding of a pair of molding footwear, or a plurality of combinations can be provided to realize batch molding of the molding footwear.

Based on the foregoing embodiments, the present invention has the following beneficial effects:

in the prior art, the plastic shoes are molded by adopting a cold mold, the required mold closing pressure is small, the fluidity of the heated rubber is good, and the injection filling of the rubber is easy to control, so at present, the plastic rubber is mostly adopted for one-step molding of the shoes, but the performances of oil resistance, skid resistance, high temperature resistance, cold resistance and the like of the plastic shoes are far inferior to those of rubber shoes. The difference between the physical properties of rubber shoes and plastic shoes is embodied in the flowability, which results in the harsh manufacturing process of rubber shoes.

The invention utilizes the physical property of the rubber shoes which is different from the plastic rubber material to combine the semi-formed shell and the lining and vulcanize and form the shoes with the lining, thereby overcoming the forming difficulty of the rubber shoes on one hand, and realizing the one-step forming combination of the rubber shoes shell and the lining by virtue of the performance on the other hand, saving the operation of additionally pasting or sewing the lining in the rubber shell shoe body, realizing the manufacture of the rubber shoes with the lining by a forming mode, effectively improving the production efficiency of the shoes with the lining and reducing the production cost. Because the manual sticking and sewing processes are not relied on, the quality of the finished product containing the lining shoe can be ensured, and the user experience is further improved.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.