CN114228214A - Shoe back upper compression molding process - Google Patents
Shoe back upper compression molding process Download PDFInfo
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- CN114228214A CN114228214A CN202111348622.XA CN202111348622A CN114228214A CN 114228214 A CN114228214 A CN 114228214A CN 202111348622 A CN202111348622 A CN 202111348622A CN 114228214 A CN114228214 A CN 114228214A
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- shoe sheet
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000000748 compression moulding Methods 0.000 title claims abstract description 29
- 238000005187 foaming Methods 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000006260 foam Substances 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 53
- 238000007789 sealing Methods 0.000 claims description 40
- 239000004744 fabric Substances 0.000 claims description 21
- 238000000465 moulding Methods 0.000 claims description 16
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 9
- 238000009966 trimming Methods 0.000 claims description 8
- 239000008258 liquid foam Substances 0.000 claims description 2
- 230000002045 lasting effect Effects 0.000 claims 1
- 238000010008 shearing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 230000002349 favourable effect Effects 0.000 abstract description 7
- 238000004321 preservation Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract 3
- 238000013012 foaming technology Methods 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 18
- 238000005086 pumping Methods 0.000 description 14
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000002262 irrigation Effects 0.000 description 4
- 238000003973 irrigation Methods 0.000 description 4
- 238000009958 sewing Methods 0.000 description 4
- 229920002725 thermoplastic elastomer Polymers 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 208000018747 cerebellar ataxia with neuropathy and bilateral vestibular areflexia syndrome Diseases 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000013138 pruning Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/128—Moulds or apparatus therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention discloses a compression molding process for a shoe back upper, which comprises the following steps: providing a forming mold, a forming machine and foaming liquid for standby, and placing the forming mold on the forming machine; providing an upper shoe sheet and a lower shoe sheet for standby, and placing the lower shoe sheet on the forming die; dripping the foaming liquid on the lower shoe sheet; will go up the shoe sheet and arrange in foaming liquid top, the make-up machine is right go up the shoe sheet with lower shoe sheet compound die and heat preservation very first time makes foaming liquid is in go up the shoe sheet with foam down between the shoe sheet to obtain the shoe back upper coarse blank, this shoe back upper compression molding technology adopts the production technology that mould pressing and foaming technology combine, reduces production flow, reduces the stylolite between the sheet while, can make to go up the shoe sheet and realize foaming down between the shoe sheet through foaming technology, is favorable to improving and adopts the hot briquetting technology and leads to the whole problem partially hard of shoe back upper, travelling comfort is not good.
Description
Technical Field
The invention relates to the technical field of shoe back upper production processes, in particular to a shoe back upper compression molding process.
Background
The shoe back upper of the existing shoe is mostly manufactured by adopting a sewing forming process, the sewing forming process can cause the manufacturing flow of the shoe back upper to be more complex, and the joint of sheets forming the shoe back upper generates more sewing lines.
The shoe back upper is produced by adopting a hot-press forming process, so that the problem that more sewing lines are generated between sheets can be avoided, the connection between the sheets is tighter, and the problems that the whole shoe back upper is harder and the comfort is insufficient are caused.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
The invention provides a compression molding process of a shoe back upper, which comprises the steps of providing a molding die, a molding machine and foaming liquid for standby, and placing the molding die on the molding machine; providing an upper shoe sheet and a lower shoe sheet for standby, and placing the lower shoe sheet on a forming die; dripping the foaming liquid on the lower shoe sheet; and placing the upper shoe sheet above the foaming liquid, closing the upper shoe sheet and the lower shoe sheet by a forming machine, and keeping the temperature for the first time to enable the foaming liquid to foam between the upper shoe sheet and the lower shoe sheet so as to obtain a shoe back upper rough blank.
The compression molding process for the counter provided by the embodiment of the invention at least has the following beneficial effects: the forming die is placed on the forming machine, the lower shoe sheet is placed on the forming die, after foaming liquid is dripped onto the lower shoe sheet, the forming machine can carry out die assembly on the upper shoe sheet and the lower shoe sheet and keep warm for the first time, so that the foaming liquid is foamed and filled in a gap between the upper shoe sheet and the lower shoe sheet, namely, the production process combining the die pressing and the foaming process is adopted in the shoe rear upper compression molding process, the production process of the shoe rear upper is reduced, more suture lines are generated between the sheets forming the shoe rear upper, the foaming filling can be carried out between the upper shoe sheet and the lower shoe sheet through the foaming process, and the problems that the whole shoe rear upper is hard and the comfort is poor due to the adoption of the hot press molding process are favorably solved.
According to some embodiments of the present invention, the step of drip-irrigating the foaming liquid onto the lower shoe sheet comprises the steps of: providing a supporting elastic sheet for standby and placing the supporting elastic sheet on the lower shoe sheet; and (4) dripping foaming liquid onto the supporting elastic sheet.
This group compression molding process behind shoes has placed the support flexure strip between last welt and lower welt, the setting that supports the flexure strip is favorable to having supported and resilience effect to group's whole behind the shoes, can assist the user to push down behind the group and stretch into the welt with the foot in, thereby it realizes the dress of shoes to support the flexure strip can kick-back automatically the auxiliary user, the foaming liquid is driped irrigation toward supporting the flexure strip position, be favorable to realizing the inside even foaming of group behind the shoes, and reduce the foreign matter sense because of supporting the flexure strip and producing in user's wearing process.
According to some embodiments of the invention, the forming die comprises an upper die base and an upper sealing ring, wherein a first vacuum channel is arranged in the upper die base, a first vacuum hole is arranged on the lower surface of the upper die base, one end of the first vacuum channel is communicated with the first vacuum hole, and the other end of the first vacuum channel is an opening; the upper sealing ring can be connected with or separated from the lower surface of the upper die holder; the method comprises the steps of providing an upper shoe sheet and a lower shoe sheet for standby, and placing the lower shoe sheet on a forming die, and comprises the following steps:
providing an upper sheet and a heating device for standby, wherein the upper sheet comprises a first cloth cover and a first adhesive surface, and the first cloth cover and the first adhesive surface are arranged oppositely;
placing the first cloth surface of the upper sheet opposite to the lower surface of the upper die holder, and pressing the upper sealing ring on the first glue surface of the upper sheet to enable the upper sheet and the upper die holder to form a sealing space;
vacuumizing the upper die holder to enable the upper sheet to be attached to the lower surface of the upper die holder and enable the upper sheet to form a shape matched with the lower surface of the upper die holder;
and heating the first adhesive surface of the upper sheet by the heating device for a second time to obtain the upper shoe sheet.
The first cloth surface of the upper sheet and the lower surface of the upper die holder are oppositely placed, the upper sealing ring is tightly pressed on the first rubber surface of the upper sheet, the upper sheet and the upper die holder can form a sealed space under the action of the upper sealing ring due to the air impermeability of the first rubber surface so as to realize subsequent vacuum-pumping treatment, the upper sheet can be attached to the lower surface of the upper die holder through the vacuum-pumping action of an externally-arranged vacuum-pumping device, and the heating device heats the first rubber surface of the upper sheet so as to enable the upper sheet to form a preset shape, namely, the shoe back upper compression molding process does not need to adopt extra equipment to independently process the upper shoe sheet, the production process is favorably saved, the production efficiency of the shoe back upper is improved, after the upper shoe sheet is manufactured on the upper die holder, the die assembly treatment can be conveniently carried out, and the upper shoe sheet and the lower shoe sheet are connected into a whole through the viscosity of the first rubber surface, the molding requirement of the shoe back upper is met.
According to some embodiments of the invention, the forming mold further comprises a lower mold base and a lower sealing ring, the lower mold base and the upper mold base are matched and jointly define a cavity, a second vacuum channel is arranged in the lower mold base, a second vacuum hole is arranged on the upper surface of the lower mold base, one end of the second vacuum channel is communicated with the second vacuum hole, the other end of the second vacuum channel is an opening, and the first vacuum hole and the second vacuum hole are both communicated with the cavity; the upper sealing ring and the lower sealing ring are arranged around the cavity, and the lower sealing ring can be connected with or separated from the upper surface of the lower die base; providing an upper shoe sheet and a lower shoe sheet for standby, and placing the lower shoe sheet on a forming die, wherein the method further comprises the following steps:
providing a lower sheet for later use, wherein the lower sheet comprises a second cloth surface and a second glue surface;
placing the second cloth surface of the lower sheet opposite to the upper surface of the lower die holder, and pressing the lower sealing ring on the second glue surface of the lower sheet to form a sealing space between the lower sheet and the lower die holder;
vacuumizing the lower die holder to enable the lower sheet to be attached to the upper surface of the lower die holder, so that the lower sheet is in a shape matched with the upper surface of the lower die holder;
and heating the second adhesive surface of the lower sheet for a second time by the heating device to prepare a lower shoe sheet.
The second cloth surface of the lower sheet is oppositely placed with the upper surface of the lower die base, the lower sealing ring is tightly pressed on the second rubber surface of the lower sheet, the lower sheet and the lower die base can form a sealed space under the action of the lower sealing ring due to the impermeability of the second rubber surface so as to realize subsequent vacuum-pumping treatment, the lower sheet can be attached to the upper surface of the lower die base through the vacuum-pumping action of an externally arranged vacuum-pumping device, and the heating device heats the second rubber surface of the lower sheet so as to form a preset shape of the lower sheet, namely, the shoe back upper compression molding process does not need to adopt extra equipment to independently process the lower shoe sheet, thereby being beneficial to saving production procedures and improving the production efficiency of the shoe back upper, after the lower shoe sheet is manufactured by the lower die base, the die assembly can be conveniently realized with the upper shoe sheet, and the lower shoe sheet are connected into a whole through the viscosity of the second rubber surface, the molding requirement of the shoe back upper is met.
According to some embodiments of the invention, the upper die base and the lower die base are provided with ejector pins, and the upper sheet and the lower sheet are placed through the ejector pins.
The ejector pins are arranged on the upper die base and the lower die base, the upper sheet and the lower sheet penetrate through the ejector pins to be placed, the ejector pins are arranged to be beneficial to matching with an external vacuumizing device to realize vacuumizing treatment, the problem that the upper sheet and the lower sheet shrink under the vacuumizing action of the external vacuumizing device is avoided, and the integral attractiveness of the manufactured counter is guaranteed.
According to some embodiments of the present invention, the heating device is a heating air box or a heating lamp, the heating temperature of the upper sheet and the lower sheet by the heating device ranges from 80 ℃ to 150 ℃, and the second time is set to range from 5s to 30 s.
The heating device is a heating air box or a heating lamp, the heating temperature range of the heating device to the upper sheet and the lower sheet is 80-150 ℃, the first glue surface of the upper sheet and the second glue surface of the lower sheet can be melted in the temperature range, so that the radian and the shape of the upper shoe sheet and the lower shoe sheet are required, the heating device is adaptive, the setting range of the second heating time can be controlled to be 5-30 s, and the production efficiency of the shoe back upper compression molding process is favorably ensured.
According to some embodiments of the present invention, the mold clamping temperature of the molding machine for the upper shoe plate and the lower shoe plate ranges from 40 ℃ to 60 ℃, and the first time is set to range from 5min to 15 min.
The mold closing temperature range of the forming machine for the upper shoe sheet and the lower shoe sheet is 40-60 ℃, the temperature range can be suitable for foaming liquid to realize foaming between the upper shoe sheet and the lower shoe sheet, so that filling between the upper shoe sheet and the lower shoe sheet is realized, the forming machine is adaptive, the heat preservation foaming time can be set to be 5 min-15 min, the foaming liquid can be ensured to be fully foamed between the upper shoe sheet and the lower shoe sheet, and the production requirement of the shoe back upper compression molding process is met.
According to some embodiments of the present invention, before the step of placing the upper shoe sheet above the foaming liquid, the forming machine closes the upper shoe sheet and the lower shoe sheet and keeps warm for a first time, so that the foaming liquid foams between the upper shoe sheet and the lower shoe sheet to obtain the shoe heel part rough blank, the forming machine further comprises the following steps: and providing a welt reinforcing sheet for standby, placing the welt reinforcing sheet on the lower shoe sheet, and placing the welt reinforcing sheet at the welt of the back upper.
The welt reinforcing sheet is placed on the lower shoe sheet and is positioned at the welt of the counter, and considering that the welt is easy to loosen in the process of frequently putting on and taking off by a user to cause the problem that the wrapping performance of the counter on the foot of the human body is poor, the welt reinforcing sheet is favorable for increasing the tensile resistance of the welt of the counter, and is favorable for improving the wearing comfort of the user and the integral durability of the counter.
According to some embodiments of the invention, the invention further comprises the steps of: and providing a trimming tool for standby, and cutting the residual materials of the shoe heel part rough blank by using the trimming tool.
After the shoe back upper rough blank is manufactured, the excess materials at the edge of the shoe back upper are cut through a trimming tool, so that the shoe back upper forms the shape and the size which are finally needed.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic perspective view of a back part of a shoe made by a compression molding process for a back part according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a forming mold according to an embodiment of the present invention;
FIG. 3 is a main flow chart of a shoe heel part compression molding process provided by an embodiment of the present invention;
FIG. 4 is a side flow chart of a heel part compression molding process provided in an embodiment of the present invention;
fig. 5 is a side flow chart of a heel part compression molding process according to an embodiment of the present invention.
In the drawings: 110-shoe upper; 120-lower shoe sheet; 200-supporting an elastic sheet; 300-an upper die holder; 310-a first vacuum channel; 410-an upper sealing ring; 420-a lower seal ring; 500-lower die holder.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of the terms are not limited to a certain number, and a plurality of the terms are two or more, and the terms larger, smaller, larger, and the like are understood to include the number of the terms, and the terms larger, smaller, and the like are understood to include the number of the terms. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. Additionally, appearing throughout and/or representing three side-by-side scenarios, e.g., A and/or B represents a scenario satisfied by A, a scenario satisfied by B, or a scenario satisfied by both A and B.
In the description of the present invention, there is a phrase containing a plurality of parallel features, wherein the phrase defines the closest feature, for example: b, C disposed on A, E connected to D, B disposed on A, E connected to D, C is not limited; however, terms indicating relationships between features such as "spaced apart", "arranged in a ring", etc. do not fall within this category. The phrase preceded by the word "mean" indicates that it is a definition of all features in the phrase, and if it is B, C, D, it indicates that both B, C and D are located on a.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
An embodiment of the present invention will be described below with reference to fig. 1 to 5.
Embodiment one, referring to fig. 1 to 3, an embodiment of the present invention provides a compression molding process for a counter, including the following steps:
s100: providing a forming mold, a forming machine and foaming liquid for standby, and placing the forming mold on the forming machine;
s200: providing the upper shoe sheet 110 and the lower shoe sheet 120 for standby, and placing the lower shoe sheet 120 on a forming mold;
s300: drip irrigation of the foaming liquid onto the lower shoe sheet 120;
s400: the upper shoe sheet 110 is placed above the foaming liquid, the forming machine closes the upper shoe sheet 110 and the lower shoe sheet 120 and keeps the temperature for the first time, so that the foaming liquid is foamed between the upper shoe sheet 110 and the lower shoe sheet 120, and a shoe back upper rough blank is obtained.
In step S100, the shape of the forming mold can be designed according to the style, size and shape of the back upper actually produced, and the pressure and temperature of the forming machine can be properly adjusted according to the actual production requirements.
Specifically, the forming mold comprises an upper mold base 300, a lower mold base 500, an upper sealing ring 410 and a lower sealing ring 420, wherein a first vacuum channel 310 is arranged in the upper mold base 300, a first vacuum hole is arranged on the lower surface of the upper mold base 300, one end of the first vacuum channel 310 is communicated with the first vacuum hole, and the other end of the first vacuum channel 310 is provided with an opening; the lower die holder 500 and the upper die holder 300 are matched and jointly limit a die cavity, a second vacuum channel is arranged in the lower die holder 500, a second vacuum hole is formed in the upper surface of the lower die holder 500, one end of the second vacuum channel is communicated with the second vacuum hole, the other end of the second vacuum channel is an opening, and the first vacuum hole and the second vacuum hole are communicated with the die cavity.
The upper sealing ring 410 and the lower sealing ring 420 are arranged around the cavity, the upper sealing ring 410 can be connected with or separated from the lower surface of the upper die base 300, and the lower sealing ring 420 can be connected with or separated from the upper surface of the lower die base 500. For example, the upper sealing ring 410 may be rotatably connected to the upper mold base 300 by a hinge, and the upper sealing ring 410 may be connected to or separated from the upper mold base 300 by rotating the upper sealing ring 410. For another example, the upper seal ring 410 can be connected to or separated from the upper die base 300 by moving relative to the upper die base 300 in the vertical direction, and the connection relationship between the lower seal ring 420 and the lower die base 500 is the same as the connection relationship between the upper seal ring 410 and the upper die base 300, which is not described herein again.
Specifically, the upper die base 300 can be set as a convex male die, the lower die base 500 can be set as a concave female die, and a cavity in a U-shaped arrangement can be formed by combining the upper die base 300 and the lower die base 500, so that the production and manufacturing requirements of the counter can be met.
The ejector pins are arranged on the upper die holder 300 and the lower die holder 500, the upper sheet and the lower sheet penetrate through the ejector pins to be placed, the ejector pins can be arranged on the outer sides of the upper sealing ring 410 and the lower sealing ring 420, the upper sheet and the lower sheet penetrate through the ejector pins to be placed, the ejector pins are arranged to be beneficial to being matched with an external vacuumizing device to realize vacuumizing treatment, the situation that the upper sheet and the lower sheet shrink under the vacuumizing action of the external vacuumizing device is avoided, and the whole attractiveness of the manufactured counter is guaranteed.
Referring to fig. 4, step S200: providing the upper and lower blades 110 and 120 for use, and placing the lower blade 120 on a forming mold, comprising the steps of:
s210: the upper sheet comprises a first cloth cover and a first rubber surface, the first cloth cover and the first rubber surface are arranged oppositely, the upper shoe sheet 110 made of the upper sheet is taken as an inner shoe sheet of the shoe back upper, namely the upper shoe sheet 110 is taken as one surface contacted with the foot of a human body, the first cloth cover of the upper sheet can be made of skin-friendly and relatively soft material parts such as various natural leathers and the like, the first rubber surface is made of air-impermeable materials in consideration of subsequent vacuumizing treatment, and the shape of the first rubber surface can be changed after the first rubber surface is heated and cooled so as to form the required shape.
S220, the first cloth surface of the upper sheet is placed opposite to the lower surface of the upper die holder 300, and the upper sealing ring 410 is tightly pressed on the first glue surface of the upper sheet, so that a sealing space is formed between the upper sheet and the upper die holder 300, and the problem of vacuum leakage in the vacuum-pumping process is favorably solved.
S230, carrying out vacuum-pumping treatment on the upper die base 300, and attaching an upper sheet to the lower surface of the upper die base 300 through an external vacuum-pumping device such as various vacuum pumps, suction pumps, fans and the like so that the upper sheet is in a shape matched with the lower surface of the upper die base 300; specifically, the vacuum-pumping device may be a suction pump, and the negative pressure generated by the suction pump to the upper sheet is 3kg f/cm2To 8kg f/cm2And the upper sheet can be well attached to the upper die base 300.
S240, heating the first adhesive surface of the upper sheet by a heating device for a second time to manufacture the upper shoe sheet 110, wherein the heating device can be a heating bellows or a heating lamp, heating of the upper sheet and the lower sheet can be realized by blowing hot air out of the heating bellows or irradiating the upper sheet and the lower sheet by the heating lamp for a certain time, the heating temperature range of the heating device to the upper sheet is 80-150 ℃, the first adhesive surface of the upper sheet can be melted in the temperature range, so as to form the required radian and shape of the upper shoe sheet 110 and the lower shoe sheet 120, preferably, the heating temperature of the heating device to the upper sheet and the lower sheet can be controlled to be 110-120 ℃, the setting range of the second time is 5-30S, preferably, the heating time can be controlled to be about 5S, and the production efficiency of the shoe back upper compression molding process can be ensured. After heating, after the upper sheet and the lower sheet are molded, the upper shoe sheet 110 and the lower shoe sheet 120 can be matched through the molding machine, and the temperature of the first adhesive surface of the upper sheet can be effectively utilized, so that the upper shoe sheet 110 and the lower shoe sheet 120 are connected into a whole.
Referring to fig. 5, step S200: the steps of providing the upper and lower blades 110 and 120 ready for use, and placing the lower blade 120 on a forming mold, further comprising the steps of:
s250: the lower sheet is provided for standby, the lower sheet comprises a second cloth cover and a second rubber surface, the second cloth cover and the second rubber surface are arranged oppositely, the lower shoe sheet 120 manufactured by the lower sheet is taken as an outer shoe sheet of the counter, namely the lower shoe sheet 120 is taken as the surface which is in contact with the outside, the second cloth cover of the lower sheet can adopt wear-resistant and difficult-scratching material products such as various leathers, canvases and the like, the subsequent vacuumizing treatment is considered, the second rubber surface can be made of air-impermeable materials, and the shape of the second rubber surface can be changed after heating and cooling so as to form the required shape.
S260: the second cloth cover of the lower sheet and the upper surface of the lower die holder 500 are placed in opposite directions, and the lower sealing ring 420 is pressed on the second glue surface of the lower sheet, so that a sealing space is formed between the lower sheet and the lower die holder 500, and the problem of vacuum leakage in the vacuum pumping treatment is avoided.
S270: the lower die holder 500 is vacuumized, and the lower sheet is attached to the upper surface of the lower die holder 500 by an external vacuum device, such as various vacuum pumps, suction pumps, fans, and the like, so that the lower sheet is formed into a shape matched with the upper surface of the lower die holder 500.
S280: the heating device heats the second adhesive surface of the lower sheet for a second time to obtain the lower shoe sheet 120, and the range of the heating temperature and the heating time of the heating device for the second adhesive surface of the lower sheet are consistent with the range of the heating temperature and the heating time for the upper sheet, which is not described herein again.
It should be noted that the sequence of the vacuum-pumping treatment and the heating treatment of the upper sheet and the lower sheet does not play a role in the preparation of the upper shoe sheet 110 and the lower shoe sheet 120, that is, the upper shoe sheet 110 and the lower shoe sheet 120 can be prepared by first vacuum-pumping and then heating for forming or first heating and then vacuum-pumping for forming.
Step S300: the drip irrigation of the foaming liquid onto the lower shoe sheet 120 comprises the following steps:
s310, providing the supporting elastic sheet 200 for standby, and placing the supporting elastic sheet 200 on the lower shoe sheet 120;
and S320, dripping the foaming liquid to the supporting elastic sheet 200.
This last group compression molding process has placed support elastic sheet 200 between last welt 110 and lower welt 120, support elastic sheet 200 can be the bright jade, TPU (thermoplastic polyurethane elastomer), TPR (thermoplastic rubber), TPE (thermoplastic elastomer), some support performance such as TPEE (thermoplastic polyester elastomer) and the better material finished piece of elasticity, support elastic sheet 200 be provided with and do benefit to and support and kick-back the effect to group's whole back of the shoe, can assist the user to push down stretch into the welt with the foot behind the group back of the shoe, thereby support elastic sheet 200 can kick-back automatically and assist the user to realize the dress of shoes, the foaming liquid is driped irrigation toward supporting elastic sheet 200 position, be favorable to realizing even foaming, and reduce the foreign matter sense that support elastic sheet 200 produced when the user wears. The dosage of the foaming liquid can be controlled to be 5ml to 20ml, and the use requirement of filling the gap between the upper shoe piece 110 and the lower shoe piece 120 can be met.
In step S400, before the step of placing the upper shoe sheet 110 above the foaming liquid, closing the upper shoe sheet 110 and the lower shoe sheet 120 by the forming machine and keeping the temperature for the first time so that the foaming liquid is foamed between the upper shoe sheet 110 and the lower shoe sheet 120 to obtain a heel part blank, the method further comprises the following steps:
the welt reinforcing sheet is provided for standby, the welt reinforcing sheet is placed on the lower welt sheet 120, the welt reinforcing sheet is placed at the welt of the counter, the problem that the wrapping performance of the counter to the foot of a human body is poor due to the fact that the welt is easy to loosen in the process that a user frequently wears the welt is considered, the welt reinforcing sheet is arranged to be beneficial to increasing the tensile resistance of the welt of the counter, and the wearing comfort of the user and the whole durability of the counter are improved. Specifically, the welt-reinforcing sheet may be formed of a set yarn or other material having a relatively high hardness.
In step S400, the mold clamping temperature range of the molding machine for the upper shoe sheet 110 and the lower shoe sheet 120 is 40 ℃ to 60 ℃, and the temperature range is suitable for the foaming liquid to foam between the upper shoe sheet 110 and the lower shoe sheet 120, so as to realize the filling between the upper shoe sheet 110 and the lower shoe sheet 120, preferably, the mold clamping temperature can be controlled to be about 50 ℃, and the first time setting range is 5min to 15min, which is favorable for ensuring the foaming liquid to foam sufficiently between the upper shoe sheet 110 and the lower shoe sheet 120, and meets the production requirements of the shoe counter compression molding process, preferably, the first time setting range can be controlled to be about 10min, and the production efficiency of the whole shoe counter can be ensured while ensuring the foaming liquid to foam sufficiently.
The shoe back upper compression molding process provided by the embodiment of the invention further comprises the following steps: and providing a trimming tool for standby, cutting the residual materials of the shoe back upper rough blank by using the trimming tool to obtain the shoe back upper rough blank, and cutting the residual materials at the edge of the shoe back upper by using the trimming tool so as to form the final required shape and size of the shoe back upper. The pruning tool may be scissors, cut pieces, etc.
The forming die can be provided with a boundary lug boss of the shoe back upper to be formed, and the boundary lug boss is matched with the pressure of the forming machine, so that a boundary indentation is formed on the shoe back upper rough blank, and a worker can conveniently shear the excess material along the boundary indentation on the hot-pressing semi-finished product.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (9)
1. A compression molding process for shoe counter is characterized by comprising the following steps:
providing a forming mold, a forming machine and foaming liquid for standby, and placing the forming mold on the forming machine;
providing an upper shoe sheet and a lower shoe sheet for standby, and placing the lower shoe sheet on the forming die;
dripping the foaming liquid on the lower shoe sheet;
and placing the upper shoe sheet above the foaming liquid, and carrying out mold assembly on the upper shoe sheet and the lower shoe sheet by the forming machine and keeping the temperature for the first time to ensure that the foaming liquid foams between the upper shoe sheet and the lower shoe sheet so as to obtain a shoe back upper rough blank.
2. The molding process of claim 1, wherein the step of dripping the foaming liquid onto the lower shoe upper comprises the steps of:
providing a supporting elastic sheet for standby and placing the supporting elastic sheet on the lower shoe sheet;
and dripping the foaming liquid into the supporting elastic sheet.
3. The back upper compression molding process according to claim 1, wherein the molding die comprises an upper die base and an upper sealing ring, a first vacuum channel is arranged in the upper die base, a first vacuum hole is arranged on the lower surface of the upper die base, one end of the first vacuum channel is communicated with the first vacuum hole, and the other end of the first vacuum channel is an opening; the upper sealing ring can be connected with or separated from the lower surface of the upper die holder; providing an upper shoe sheet and a lower shoe sheet for standby, and placing the lower shoe sheet on the forming die, wherein the method comprises the following steps:
providing an upper sheet and a heating device for standby, wherein the upper sheet comprises a first cloth cover and a first adhesive surface, and the first cloth cover and the first adhesive surface are arranged oppositely;
placing the first cloth surface of the upper sheet opposite to the lower surface of the upper die holder, and pressing the upper sealing ring on the first glue surface of the upper sheet, so that a sealing space is formed between the upper sheet and the upper die holder;
vacuumizing the upper die holder to enable the upper sheet to be attached to the lower surface of the upper die holder, so that the upper sheet is in a shape matched with the lower surface of the upper die holder;
and heating the first adhesive surface of the upper sheet for a second time by the heating device to prepare an upper shoe sheet.
4. The counter compression molding process according to claim 3, wherein the molding die further comprises a lower die holder and a lower sealing ring, the lower die holder is matched with the upper die holder and defines a cavity together, a second vacuum channel is arranged in the lower die holder, a second vacuum hole is arranged on the upper surface of the lower die holder, one end of the second vacuum channel is communicated with the second vacuum hole, the other end of the second vacuum channel is provided with an opening, and the first vacuum hole and the second vacuum hole are both communicated with the cavity; the upper sealing ring and the lower sealing ring are arranged around the cavity, and the lower sealing ring can be connected with or separated from the upper surface of the lower die base; providing an upper shoe sheet and a lower shoe sheet for standby, and placing the lower shoe sheet on the forming die, and further comprising the following steps:
providing a lower sheet for later use, wherein the lower sheet comprises a second cloth surface and a second adhesive surface, and the second cloth surface and the second adhesive surface are arranged oppositely;
placing the second cloth surface of the lower sheet opposite to the upper surface of the lower die holder, and pressing the lower sealing ring on the second glue surface of the lower sheet, so that a sealing space is formed between the lower sheet and the lower die holder;
vacuumizing the lower die holder to enable the lower sheet to be attached to the upper surface of the lower die holder, so that the lower sheet is in a shape matched with the upper surface of the lower die holder;
and heating the second adhesive surface of the lower sheet for a second time by the heating device to prepare a lower shoe sheet.
5. The shoe back upper compression molding process of claim 4, wherein ejector pins are arranged on the upper die holder and the lower die holder, and the upper sheet and the lower sheet are placed through the ejector pins.
6. The lasting molding process according to claim 4, wherein the heating device is a heating air box or a heating lamp, the heating temperature of the upper sheet and the lower sheet by the heating device ranges from 80 ℃ to 150 ℃, and the setting range of the second time is from 5s to 30 s.
7. The shoe back upper compression molding process according to claim 1, wherein the mold closing temperature of the molding machine for the upper shoe sheet and the lower shoe sheet ranges from 40 ℃ to 60 ℃, and the setting range of the first time is 5min to 15 min.
8. The shoe back upper compression molding process according to claim 2, wherein before the step of placing the upper shoe sheet over the foaming liquid, the molding machine closing the upper shoe sheet and the lower shoe sheet and keeping the temperature for a first time to foam the foaming liquid between the upper shoe sheet and the lower shoe sheet to obtain a shoe back upper blank, the process further comprises the following steps:
and providing a welt reinforcing sheet for standby, and placing the welt reinforcing sheet on the lower shoe sheet, wherein the welt reinforcing sheet is placed at the welt of the back upper.
9. The counter compression molding process of claim 1, further comprising the steps of:
and providing a trimming tool for standby, and shearing the residual materials of the shoe heel part rough blank by using the trimming tool.
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| CN202111348622.XA CN114228214A (en) | 2021-11-15 | 2021-11-15 | Shoe back upper compression molding process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111348622.XA CN114228214A (en) | 2021-11-15 | 2021-11-15 | Shoe back upper compression molding process |
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| CN114228214A true CN114228214A (en) | 2022-03-25 |
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| CN117754806A (en) * | 2023-12-04 | 2024-03-26 | 广东恩浩内衣实业有限公司 | Combined forming process, footwear fittings and shoes |
| US12011064B2 (en) | 2021-10-15 | 2024-06-18 | Skechers U.S.A., Inc. Ii | Footwear counter for easier entry and removal |
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