Secondary foaming forming equipment for shoe materials

Abstract

The utility model discloses shoe material secondary foaming forming equipment which comprises a rack, and a heating device and a cooling device are arranged on the rack. The heating device comprises an upper heating shell and a lower heating shell which can be covered with each other, a closed cover body wrapping the shoe material mold is formed when the upper heating shell and the lower heating shell are covered with each other, and infrared lamp tubes are installed in the upper heating shell and / or the lower heating shell; the cooling device comprises an upper cooling shell and a lower cooling shell which can be mutually covered, a closed cover body wrapping the shoe material mold is formed when the upper cooling shell and the lower cooling shell are covered, a pipeline is installed in the upper cooling shell and / or the lower cooling shell, a through hole used for spraying a cooling medium is formed in the pipeline, and the through hole faces the upper surface and / or the bottom surface of the shoe material mold. The heating device and the cooling device both adopt closed cover body structures which can be mutually covered, so that the shoe material mold is ensured to be uniformly heated / cooled, the foaming degrees of all parts of the shoe material are consistent, the influence of the external environment on the shoe material mold is effectively avoided, and the stability and the reliability of the secondary foaming forming process are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to shoe material forming technical field, specifically a kind of shoe material secondary foaming forming equipment. BACKGROUND

[0002] In shoe material manufacturing industry, secondary foaming forming process plays a decisive role in promoting shoe material quality, the extensive application of high-performance materials such as EVA, higher requirements are put forward to forming equipment. However, traditional shoe material secondary foaming forming equipment has multiple problems in heating and cooling links, which restricts the improvement of production efficiency and product quality.

[0003] The existing shoe material forming equipment has many deficiencies when dealing with EVA material secondary foaming. The heating device generally adopts contact heating (such as hot plate conduction), and this conduction method is an open or semi-open structure, which not only causes serious heat loss, resulting in energy waste, but also prolongs the heating time and reduces the production efficiency. At the same time, due to the slow heating speed, the equipment needs to run for a long time, which increases the equipment wear and maintenance cost, and also makes it difficult to ensure the uniformity of heating, so that the foaming density of EVA material is inconsistent, which affects its cushioning and supporting performance and reduces the product quality; the cooling device mostly adopts open spraying or immersion cooling, which is difficult to accurately control the distribution of cooling medium, causing a large temperature difference between the surface and the inside, leading to inconsistent cooling shrinkage of shoe material and deformation defects. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of shoe material secondary foaming forming equipment to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of shoe material secondary foaming forming equipment, including rack, heating device and cooling device are arranged on the rack;

[0006] The heating device includes upper heating shell and lower heating shell that can cover each other, and forms a closed cover when covering, which wraps the shoe material mold, and infrared lamp tube is installed in the upper heating shell and / or lower heating shell;

[0007] The cooling device includes upper cooling shell and lower cooling shell that can cover each other, and forms a closed cover when covering, which wraps the shoe material mold, and pipeline is installed in the upper cooling shell and / or lower cooling shell, the pipeline is provided with through hole for spraying cooling medium, and the through hole faces the upper surface and / or bottom surface of the shoe material mold;

[0008] The shoe material mold runs between the heating device and the cooling device for secondary foaming forming.

[0009] Further, the infrared lamp tube does not contact the shoe material mold.

[0010] Further, the lower heating shell is provided with a placing block for supporting the shoe material mold and keeping the shoe material mold at a preset distance from the infrared lamp tube, and the height of the placing block is higher than that of the infrared lamp tube.

[0011] Further, the pipeline is not in contact with the shoe material mold.

[0012] Further, the lower cooling shell is provided with a placing block for supporting the shoe material mold and keeping the shoe material mold at a preset distance from the pipeline, and the height of the placing block is higher than that of the pipeline.

[0013] Further, the upper heating shell and / or the lower heating shell is coated with a heat insulation coating.

[0014] Further, the pipeline is connected with a water source and an air source at the same time, and the pipeline is provided with a switch for controlling the water outlet or the air outlet.

[0015] Further, the through holes are arranged in an array.

[0016] Further, the shoe material mold is transported between the heating device and the cooling device by a transport device, the transport device comprises a bracket, a lifting mechanism for driving the shoe material mold to lift and a transverse movement mechanism for driving the shoe material mold to transversely move, and the shoe material mold is installed on the bracket.

[0017] Further, the lifting mechanism comprises a lifting motor, a driving sprocket, a driven sprocket, a chain, a screw rod and a sliding block, the bracket is fixed on the sliding block, the lifting motor is fixed on a rack, the driving sprocket is sleeved and fixed on an output shaft of the lifting motor, the driven sprocket is sleeved and fixed on the screw rod, the chain is sleeved on the driving sprocket and the driven sprocket, the axial direction of the screw rod extends in a vertical direction, and the sliding block is sleeved on the screw rod and is threadedly connected with the screw rod; the transverse movement mechanism comprises a transverse movement motor, a gear and a rack, the transverse movement motor is fixed on the rack, the gear is sleeved and fixed on an output shaft of the transverse movement motor, and the rack is arranged on the bracket and is in meshing connection with the gear.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] 1. The utility model discloses a heating source adopts infrared tube, and the infrared tube is directly acted on the shoe material mould through the radiation mode, does not need to carry out heat conduction through medium such as air, avoids the heating dead angle caused by uneven heat conduction, can realize quick, even heating, ensures that the shoe material mould is heated evenly, and the foaming degree of each part of the shoe material is consistent, greatly improves heating efficiency, reduces energy consumption, effectively solves many problems of traditional heating mode, the through -hole on the pipeline sprays cooling medium towards the upper surface and bottom surface of shoe material mould, realizes all -round, dead -angle -free cooling, avoids the shrinkage inconsistency of shoe material caused by uneven cooling, effectively prevents the problems such as deformation and cracking of shoe material, simultaneously, the heating device and cooling device of the equipment all adopt the closed cover structure that can be mutually covered, ensure that the shoe material mould is heated / cooled evenly, and the foaming degree of each part of the shoe material is consistent, and effectively avoid the influence of external environment on the shoe material mould, ensure the stability and reliability of secondary foaming forming process.

[0020] 2. The pipeline is connected with water source and gas source simultaneously, and the water and gas share pipeline reduces equipment complexity and maintenance cost, when cooling, first cooling through water, then gas purging, realize mould surface rapid cooling and synchronous removal residual moisture, avoid the mould or machine platform corrosion caused by cooling medium residue, prolong the service life of shoe material mould, reduce the maintenance cost of equipment.

[0021] 3. The lower heating shell and the lower cooling shell are provided with placing blocks, which not only provide support for the shoe material mould, but also ensure that the shoe material mould maintains a fixed distance from the heating / cooling elements, so that the infrared radiation coverage area is uniform, and the cooling medium has a certain flow space, ensuring that the shoe material mould is heated / cooled evenly and the foaming degree of each part of the shoe material is consistent.

[0022] 4. The upper heating shell and / or the lower heating shell are coated with a heat insulation coating, which can reflect the infrared rays not absorbed by the shoe material mould back to the heating area, reducing heat loss through the shell wall. In this way, the heat energy radiated by the infrared lamp tube and the residual heat reflected by the heat insulation coating form a closed loop heat field, achieving efficient use of heat energy. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structure schematic view of the utility model shoe material secondary foaming forming equipment;

[0024] Figure 2 It is the structure schematic view of the utility model shoe material secondary foaming forming equipment after removing the rack and controller;

[0025] Figure 3 It is the structure schematic view of the heating device in the utility model shoe material secondary foaming forming equipment;

[0026] Figure 4 It is the structure schematic view of the cooling device in the utility model shoe material secondary foaming forming equipment;

[0027] Figure 5 Figure 2 is a schematic view of the bracket structure of the shoe material secondary foaming forming equipment of the present application;

[0028] In the figure, 100 - rack, 200 - shoe material mold, 201 - frame rod, 1 - heating device, 11 - upper heating shell, 12 - lower heating shell, 121 - through slot, 13 - infrared lamp, 14 - placing block, 2 - cooling device, 21 - upper cooling shell, 22 - lower cooling shell, 221 - through slot, 23 - pipeline, 231 - through hole, 232 - switch, 24 - placing block, 25 - water baffle, 31 - bracket, 311 - through slot, 312 - pressing block, 32 - lifting mechanism, 321 - lifting motor, 322 - driving sprocket, 323 - driven sprocket, 324 - chain, 325 - lead screw, 326 - sliding block, 33 - transverse moving mechanism, 331 - transverse moving motor, 332 - gear, 333 - rack, 4 - controller. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] As shown in Figures 1-5 The present embodiment provides a shoe material secondary foaming forming equipment, which comprises a rack 100, wherein the rack 100 is provided with a heating device 1, a cooling device 2 and a running device. In the present embodiment, the heating device 1 and the cooling device 2 are arranged vertically, and the heating device 1 is arranged above the cooling device 2. The equipment can be provided with multiple groups of heating devices 1, cooling devices 2 and running devices for working. Each group of heating devices 1, cooling devices 2 and running devices works independently. In order to facilitate observation, Figure 1 In the figure, the first group of heating device 1 and cooling device 2 are not put into the shoe material mold 200, and the shell covering the rack 333 is removed, and part of the chain 324 is cut off;

[0031] The heating device 1 comprises an upper heating shell 11 and a lower heating shell 12 which can be covered with each other to form a closed cover which wraps the shoe material mold 200, for example, the shoe material mold 200 is placed in the lower heating shell 12, the oil cylinder is arranged on the upper heating shell 11 to realize the lifting of the upper heating shell 11, the lifting is prior art, and will not be repeated here, the infrared lamp 13 is installed in the upper heating shell 11 and / or the lower heating shell 12, the infrared lamp 13 is arranged in a matrix on the inner wall of the upper heating shell 11 and / or the lower heating shell 12, the infrared lamp 13 can be installed in the upper heating shell 11, the infrared lamp 13 can be installed in the lower heating shell 12, or the infrared lamp 13 can be installed in the upper heating shell 11 and the lower heating shell, the infrared lamp directly acts on the shoe material mold 200 through radiation, without the need for heat conduction through air and other media, avoiding the heating dead angle caused by uneven heat conduction, the infrared lamp 13 is installed in the upper heating shell 11 and the lower heating shell in the embodiment, the infrared lamp 13 is arranged in a matrix on the inner wall of the upper heating shell 11 and the lower heating shell 12, so that the shoe material mold 200 is heated uniformly, and the foaming degree of each part of the shoe material is consistent, the radiation wavelength range of the infrared lamp is 2-10 μm, the infrared lamp 13 does not contact the shoe material mold 200, in the embodiment, the placing block 14 for supporting the shoe material mold 200 and keeping the shoe material mold 200 and the infrared lamp 13 at a predetermined distance is arranged in the lower heating shell 12, the height of the placing block 14 is higher than the height of the infrared lamp 13, for example, the distance between the surface of the shoe material mold 200 and the infrared lamp 13 can be 10-25 cm, so that the infrared radiation coverage area is uniform, ensuring that the shoe material mold is heated uniformly, and the foaming degree of each part of the shoe material is consistent, the upper heating shell 11 and the lower heating shell 12 are coated with a heat insulation coating, for example, a ceramic-based heat insulation coating (such as alumina or zirconia), for example, the thickness of the heat insulation coating is 0.1-0.5 mm, and the thermal conductivity is ≤1.2 W / m·K, the infrared rays not absorbed by the mold can be reflected back to the heating area, reducing the heat loss through the shell wall, so that the heat energy radiated by the infrared lamp and the residual heat reflected by the heat insulation coating form a closed loop heat field, realizing efficient use of heat energy;

[0032] The cooling device 2 comprises an upper cooling shell 21 and a lower cooling shell 22 which can be covered with each other to form an enclosed cover body wrapping the shoe material mold 200, for example, the shoe material mold 200 is placed in the lower cooling shell 22, the upper cooling shell 21 is also provided with an oil cylinder to realize the lifting of the upper cooling shell 21, which is a prior art and will not be described here, the upper cooling shell 21 and / or the lower cooling shell 22 is provided with a pipeline 23, the pipeline 23 is provided with through holes 231 for spraying cooling medium, the through holes 231 are arranged towards the upper surface and / or the bottom surface of the shoe material mold 200, the through holes 231 are arranged in an array, the cooling medium is sprayed through the through holes 231 to realize omnidirectional and dead angle-free cooling, avoid uneven cooling leading to inconsistent shrinkage of the shoe material, effectively prevent the shoe material from deforming, cracking and other problems, the infrared lamp tube 13 can be installed in the upper cooling shell 21, the pipeline 23 can also be installed in the lower cooling shell 22, the pipeline 23 can also be installed in the upper cooling shell 21 and the lower heating shell, the pipeline 23 is arranged in a matrix on the inner wall of the upper cooling shell 21 and the lower cooling shell 22 in the embodiment, so that the shoe material mold 200 is uniformly cooled and the foaming degree of each part of the shoe material is consistent, the lower cooling shell 22 is provided with a placing block 24 for supporting the shoe material mold 200 and keeping the shoe material mold 200 at a predetermined distance from the pipeline 23, the height of the placing block 24 is higher than the height of the pipeline 23, for example, the distance between the surface of the shoe material mold 200 and the pipeline 23 can be 10-25 cm, so that the cooling medium has a certain flow space, ensuring that the shoe material mold is uniformly heated and the foaming degree of each part of the shoe material is consistent, in the embodiment, the pipeline 23 is connected with a water source and an air source at the same time, the medium circulation is realized by an external pump body or an air source, the pipeline 23 is provided with a switch 232 for controlling the water or gas outlet of the through hole, the switch 232 is signal connected with a controller 4, the controller 4 can control the cooling water spraying time, the gas spraying time and the spraying pressure according to a preset program, the compressed gas is dry air or nitrogen, the gas pressure is 0.3-0.8 MPa, so that the pipeline 23 is connected with the water source and the air source at the same time, the water and gas share the pipeline to reduce the complexity of the equipment and the maintenance cost, during cooling, the water is used for cooling first and then the gas is used for blowing to realize rapid cooling of the mold surface and synchronous removal of residual water, avoid mold or machine corrosion caused by residual cooling medium, prolong the service life of the shoe material mold and reduce the maintenance cost of the equipment, a water blocking cover 25 can also be arranged around the lower cooling shell 22 to prevent water from flowing onto the machine table;

[0033] The shoe material mold 200 is transported between the heating device 1 and the cooling device 2 by a transport device to be foamed and molded twice. In the embodiment, the rack 100 is further provided with a placing station for placing the shoe material mold. The placing station can be provided with two placing stations respectively arranged at the front and rear positions of the heating device 1 and the cooling device 2. The transport device comprises a bracket 31, a lifting mechanism 32 for driving the shoe material mold 200 to lift, and a transverse movement mechanism 33 for driving the shoe material mold 200 to move transversely. The shoe material mold 200 is arranged on the bracket 31. The bracket 31 is provided with a through slot 311 matched with the bracket rod 201. The shoe material mold 200 is arranged on the bracket 31 through the bracket rod. The through slot 311 is provided with a pressing block 312 for pressing the bracket rod 201 to prevent the shoe material mold 200 from moving. The lower heating shell 11 and the lower cooling shell 21 are also provided with a through slot (121, 221) matched with the bracket rod 201. When the shoe material mold 200 enters the heating device 1 and the cooling device 2, the bracket rod 201 is clamped into the through slot (121, 221), and the shoe material mold 200 will not move.

[0034] The lifting mechanism 32 comprises a lifting motor 321, a driving sprocket 322, a driven sprocket 323, a chain 324, a lead screw 325 and a sliding block 326. The bracket 31 is fixed on the sliding block 326. The lifting motor 321 is fixed on the rack 100. The driving sprocket 322 is sleeved and fixed on the output shaft of the lifting motor 321. The driven sprocket 323 is sleeved and fixed on the lead screw 325. The chain 324 is sleeved on the driving sprocket 322 and the driven sprocket 323. The lead screw 325 extends in the vertical direction. The sliding block 326 is sleeved on the lead screw 325 and is threadedly connected with the lead screw 325. The transverse movement mechanism 33 comprises a transverse movement motor 331, a gear 332 and a rack 333. The transverse movement motor 331 is fixed on the rack 100. The gear 332 is sleeved and fixed on the output shaft of the transverse movement motor 331. The rack 333 is arranged on the bracket 31 and is in meshing connection with the gear 332.

[0035] The utility model discloses a work, set up in the shoe material mould 200 on the bracket 31 on the placing station, put the pre -foaming shoe material into the shoe material mould 200, when needing heating, by lifting motor 321 drive bracket 31 and the shoe material mould 200 on bracket 31 ascend to the position of heating device 1, by transverse moving motor 331 drive bracket 31 and the shoe material mould 200 on bracket 31 remove to lower heating shell body 12, after transverse moving motor 331 drive bracket 31 remove, motor drive upper heating shell body 11 descend and close with lower heating shell body 12, form the closed cover, infrared lamp tube 13 radiate heating to the set temperature, for example, heat to 500 DEG C, continue 2-3min, after heating, by lifting motor 321 drive bracket 31 and the shoe material mould 200 on bracket 31 descend to the position of cooling device 2, by transverse moving motor 331 drive bracket 31 and the shoe material mould 200 on bracket 31 remove to lower cooling shell body 22, after transverse moving motor 331 drive bracket 31 remove, motor drive upper cooling shell body 21 descend and close with lower cooling shell body 22, form the closed cover, controller starts water pump, and cooling water is evenly injected to the shoe material mould 200 surface through the through -hole 231 of pipeline 23, continues 10-30 seconds, and controller closes water pump and starts air pump, and the residual moisture on the surface of shoe material mould 200 is swept by compressed gas through the same through -hole 231, continues 5-15 seconds, and circulates to finished product demoulding.

[0036] The utility model discloses a heating device and cooling device for shoe material mould, which comprises a lower heating shell, a lower cooling shell, an upper heating shell and a shoe material mould, wherein the lower heating shell and the lower cooling shell are connected with the upper heating shell through pipelines, and the pipelines are provided with through holes.

[0037] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A secondary foaming molding equipment for shoe materials, comprising a frame, wherein a heating device and a cooling device are provided on the frame, characterized in that: The heating device includes an upper heating shell and a lower heating shell that can be covered each other, forming a closed cover that wraps the shoe material mold when closed. Infrared lamps are installed inside the upper heating shell and / or the lower heating shell. The cooling device includes an upper cooling shell and a lower cooling shell that can be covered each other, forming a closed cover that encloses the shoe material mold when closed. Pipes are installed inside the upper cooling shell and / or the lower cooling shell, and the pipes have through holes for spraying cooling medium. The through holes face the upper surface and / or bottom surface of the shoe material mold. The shoe material mold operates between a heating device and a cooling device for secondary foaming molding.

2. The shoe material secondary foaming molding equipment according to claim 1, characterized in that: The infrared lamp tubes do not come into contact with the shoe material mold.

3. The shoe material secondary foaming molding equipment according to claim 2, characterized in that: The lower heating housing is provided with a placement block for supporting the shoe material mold and maintaining a preset distance between the shoe material mold and the infrared lamp tube. The height of the placement block is higher than the height of the infrared lamp tube.

4. The shoe material secondary foaming molding equipment according to claim 1, characterized in that: The pipes do not come into contact with the shoe material molds.

5. The shoe material secondary foaming molding equipment according to claim 4, characterized in that: The lower cooling housing is provided with a placement block for supporting the shoe material mold and maintaining a preset distance between the shoe material mold and the pipe. The height of the placement block is higher than the height of the pipe.

6. The shoe material secondary foaming molding equipment according to claim 1, characterized in that: The upper heating shell and / or lower heating shell are coated with a heat-insulating coating.

7. The shoe material secondary foaming molding equipment according to claim 1, characterized in that: The pipeline connects to both a water source and a gas source, and is equipped with a switch to control whether water or gas is emitted from the through-hole.

8. The shoe material secondary foaming molding equipment according to claim 1 or 7, characterized in that: The through holes are arranged in an array.

9. The shoe material secondary foaming molding equipment according to claim 1, characterized in that: The shoe material mold operates between the heating device and the cooling device via a transfer device. The transfer device includes a lifting mechanism for raising and lowering the shoe material mold and a traversing mechanism for moving the shoe material mold laterally.

10. The shoe material secondary foaming molding equipment according to claim 9, characterized in that: The lifting mechanism includes a lifting motor, a driving sprocket, a driven sprocket, a chain, a lead screw, and a slider. The lifting motor is fixed to the frame. The driving sprocket is sleeved and fixed on the output shaft of the lifting motor. The driven sprocket is sleeved and fixed on the lead screw. The chain is sleeved on the driving sprocket and the driven sprocket. The lead screw extends vertically. The slider is sleeved on the lead screw and threadedly connected to the lead screw. The traversing mechanism includes a traversing motor, a gear, and a rack. The traversing motor is fixed to the frame. The gear is sleeved and fixed on the output shaft of the traversing motor. The rack meshes with the gear.

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