A high and low temperature cascading machine for shoemaking

Abstract

The present invention discloses a high and low temperature cascade machine for shoemaking, comprising at least one double-layer oven for heating, softening and shaping the hot melt adhesive in the shoemaking process, and solidifying the glue in the shoemaking process; and a main machine, the main machine is connected to the double-layer oven through a pipeline, and is used to transport the heat generated by high-temperature compression to the double-layer oven, and the cold energy generated by evaporation on the low-temperature side of the main machine is transported to the workshop through the air outlet static pressure box for cooling or discharge to the outside. The present invention can not only realize that one main machine drives multiple double-layer ovens to work at the same time, meeting the batch production requirements of the shoemaking process, but also can control the temperature of the double-layer oven by controlling the gas flow, ensure that the hot melt adhesive in the shoemaking process is evenly heated, realize fine control of the hot melt adhesive, improve the efficiency of shoemaking and the quality of the product, and at the same time, the generated cold energy can be used for cooling the workshop or discharged to the outside, greatly reducing the production energy consumption.

Description

Technical Field

[0001] The invention relates to a high and low temperature cascading machine for making shoes. Background Art

[0002] In the shoemaking process, the heating and drying of hot melt adhesive is an important step, which directly affects the quality and durability of shoes. Hot melt adhesive is a thermoplastic adhesive that is melted by heating, then applied to the material to be bonded, and forms a strong bond after cooling. The heating and drying process is mainly to make the hot melt adhesive soften quickly, thereby ensuring the firmness and durability of the bond.

[0003] Hot melt adhesives are widely used in shoemaking, including the manufacture of seamless uppers, large-area material lamination of uppers, bonding of insoles, etc. These applications require hot melt adhesives to have good bonding properties, environmental protection, air permeability and water resistance. In order to meet these requirements, the heating and drying process is crucial.

[0004] In the prior art, the shoemaking process is generally implemented using a special shoemaking oven or other heating equipment. These devices use electric heating or natural gas for heating, which not only has high energy consumption, but also makes it difficult to control the temperature and time during the shoemaking process. Excessive temperature or excessively long drying time may cause the performance of the hot melt adhesive to deteriorate, affecting the quality of the shoes. Summary of the invention

[0005] The purpose of the present invention is to provide a technical solution for a high and low temperature cascade machine for shoemaking in view of the shortcomings of the prior art. Not only can one main machine drive one or more double-layer ovens to work at the same time to meet the batch production requirements of the shoemaking process, but also the temperature of the double-layer oven can be controlled by controlling the gas flow rate to ensure that the hot melt adhesive is evenly heated during the shoemaking process, thereby quickly softening and shaping the hot melt adhesive, and solidifying the glue in the shoemaking process, thereby achieving fine control of the hot melt adhesive and improving the efficiency of shoemaking and the quality of the product. At the same time, the generated cold energy can be used for cooling the workshop or discharged to the outdoors, greatly reducing production energy consumption.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A high and low temperature cascade machine for shoe making, characterized in that:

[0008] At least one double-layer oven for heating, softening and shaping the hot melt adhesive in the shoe-making process and curing the glue in the shoe-making process;

[0009] and a main machine, which is connected to the double-layer oven through a pipeline, so as to transport the heat generated by high-temperature compression to the double-layer oven, and the cold generated by evaporation on the low-temperature side of the main machine is transported to the workshop through the air outlet static pressure box for cooling or discharged to the outside; through the design of the above structure, not only can one main machine drive one or more double-layer ovens to work at the same time to meet the batch production requirements of the shoemaking process, but also the temperature of the double-layer oven can be controlled by controlling the gas flow rate to ensure that the hot melt adhesive is evenly heated during the shoemaking process, so that the hot melt adhesive can be quickly softened and shaped, and the glue in the shoemaking process can be solidified, so as to achieve fine control of the hot melt adhesive, improve the efficiency of shoemaking and the quality of the product, and at the same time, the generated cold can be used to cool the workshop or be discharged to the outside, which greatly reduces the production energy consumption.

[0010] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0011] The present invention can not only realize that one main machine drives one or more double-layer ovens to work at the same time, thus meeting the mass production requirements of the shoemaking process, but also can control the temperature of the double-layer oven by controlling the gas flow rate, thereby ensuring that the hot melt adhesive is evenly heated during the shoemaking process, thereby quickly softening and shaping the hot melt adhesive, and solidifying the glue in the shoemaking process, thereby realizing fine control of the hot melt adhesive, improving the efficiency of shoemaking and the quality of the product, and at the same time the generated cold energy can be used for cooling the workshop or discharged outdoors, thereby greatly reducing production energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below in conjunction with the accompanying drawings:

[0013] Figure 1 It is a structural schematic diagram of a high and low temperature cascade machine for shoe making according to the present invention;

[0014] Figure 2 It is a schematic diagram of the structure of the double-layer oven in the present invention;

[0015] Figure 3 for Figure 2 Structural diagram of the middle A direction;

[0016] Figure 4 It is a schematic diagram of the connection between the upper box body and the lower box body in the present invention;

[0017] Figure 5 It is a schematic diagram of the connection between the upper layer heating and drying mechanism and the lower layer heating and drying mechanism in the present invention;

[0018] Figure 6 for Figure 5 Schematic diagram of the structure in the B direction;

[0019] Figure 7It is a schematic diagram of the internal structure of the upper layer heating and drying mechanism and the lower layer heating and drying mechanism in the present invention;

[0020] Figure 8 It is a structural schematic diagram of the mesh blowing plate in the present invention;

[0021] Fig. 9 It is a structural schematic diagram of the host in the present invention;

[0022] Fig.10 It is a schematic diagram of the internal structure of the low temperature side box in the present invention;

[0023] Fig.11 It is a schematic diagram of the structure of the high and low temperature heat exchange component in the present invention.

[0024] In the figure: 1-double-layer oven; 2-main unit; 3-air outlet static pressure box; 4-outdoor radiator; 5-upper box; 6-lower box; 7-upper door panel; 8-lower door panel; 9-upper heating and drying mechanism; 10-lower heating and drying mechanism; 11-upper channel; 12-lower channel; 13-bottom heat dissipation channel; 14-upper liner inner plate; 15-lower liner inner plate; 16-installation port; 17-upper air suction plate; 18-lower air suction plate; 19-air suction port; 20-upper air guide channel; 21-lower air guide channel; 22-upper cover plate; 23-upper inspection plate; 24-lower inspection plate; 25-first volute; 26-first motor; 27-second volute; 28-second motor; 29-microchannel blowing plate; 30-slide rail; 31-bending side plate; 32-flat tube ;33-collecting pipe;34-connecting pipe;35-first stop valve;36-mesh blowing plate;37-blowing hole;38-lampshade;39-lampshade welding strip;40-low temperature side box;41-underframe welding mechanism;42-electric control box;43-air outlet cover;44-fan partition;45-air outlet;46-fan;47-evaporator;48-protective plate;49-evaporative condenser;50-low temperature side compressor;51-low temperature side gas-liquid separator;52-low temperature side liquid storage tank;53-high temperature side enthalpy spray compressor;54-high temperature side gas-liquid separator;55-high temperature side liquid storage tank;56-electronic expansion valve;57-enthalpy spray capillary;58-ball valve;59-second stop valve;60-copper filter;61-pipeline;62-oil separator. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0028] like Figures 1 to 11 As shown, a high and low temperature cascade machine for shoemaking of the present invention comprises at least one double-layer oven 1 and a host 2. This application takes one host 2 corresponding to three double-layer ovens 1 as an example. The host 2 can be connected to one layer of the double-layer oven 1, or connected to the upper and lower layers of the double-layer oven 1 at the same time, or connected to a single-layer oven. The structure of the single-layer oven can adopt a structure similar to that of a layer of the double-layer oven.

[0029] The double-layer oven 1 is used to heat, soften and shape the hot melt adhesive in the shoe-making process, and to solidify the glue in the shoe-making process.

[0030] The double-layer oven 1 includes an upper box body 5, a lower box body 6, an upper heating and drying mechanism 9 and a lower heating and drying mechanism 10. The lower box body 6 is located below the upper box body 5. The upper heating and drying mechanism 9 and the lower heating and drying mechanism 10 are arranged between two upper boxes 5 arranged opposite to each other. The upper heating and drying mechanism 9, the lower heating and drying mechanism 10 and the two upper boxes 5 cooperate to form an upper channel 11, and the lower heating and drying mechanism 10 and the two upper boxes 5 cooperate to form a lower channel 12. Through the design of the upper channel 11 and the lower channel 12, the processing requirements for shoes at different temperatures can be met. The upper heating and drying mechanism 9 is used to heat and dry the shoes in the upper channel 11, and the upper channel 11 is used to control the temperature at 80°C. The lower heating and drying mechanism 10 is used to heat and dry the shoes in the lower channel 12, and the lower channel 12 is used to control the temperature at 120°C. The lower box body 6 is used to support the upper box body 5.

[0031] An upper door panel 7 is provided on the outer side of the upper box body 5, and an upper liner inner plate 14 and a lower liner inner plate 15 are respectively provided on one side of the upper box body 5 close to the upper heating and drying mechanism 9 and the lower heating and drying mechanism 10, and upper air suction plates 17 and lower air suction plates 18 are respectively provided on both sides of the upper channel 11 and the lower channel 12 of the upper box body 5, and both the upper air suction plates 17 and the lower air suction plates 18 are provided with air suction ports 19, and the upper liner inner plate 14 and the lower liner inner plate 15 are provided with air suction mechanisms, and the heat in the upper channel 11 and the lower channel 12 is respectively input into the upper heating and drying mechanism 9 and the lower heating and drying mechanism 10 through the air suction ports 19 via the air suction mechanisms to realize cyclic heating and drying.

[0032] The upper inner liner plate 14 and the lower inner liner plate 15 of the upper box body 5 on one side are both provided with mounting openings 16 to facilitate the installation and removal of the heating lamp.

[0033] The air suction mechanism includes an upper air suction component connected to the upper liner inner plate 14 and a lower air suction component connected to the lower liner inner plate 15, the upper air suction component includes an upper air guide channel 20, a first volute 25 and a first motor 26, the upper air guide channel 20 is connected to the air suction port 19 through the first volute 25, the first motor 26 is connected to the first volute 25, the lower air suction component includes a lower air guide channel 21, a second volute 27 and a second motor 28, the lower air guide channel 21 is connected to the air suction port 19 through the second volute 27, and the second motor 28 is connected to the second volute 27; the air in the upper channel 11 can be Under the action of the first motor 26, the air enters the first volute 25 through the air suction port 19, and is then input into the upper heating and drying mechanism 9 through the upper air guiding channel 20. The upper heating and drying mechanism 9 blows air downward to achieve continuous heating and drying of the shoes in the upper channel 11. The air in the lower channel 12 can enter the second volute 27 through the air suction port 19 under the action of the second motor 28, and is then input into the lower heating and drying mechanism 10 through the lower air guiding channel 21. The lower heating and drying mechanism 10 blows air downward to achieve continuous heating and drying of the shoes in the lower channel 12, thereby greatly improving the efficiency of shoemaking.

[0034] A lower door panel 8 is disposed on the outer side of the lower box body 6 , and a bottom heat dissipation channel 13 is disposed at the bottom of the lower box body 6 . The lower door panel 8 facilitates the inspection and maintenance of the lower box body 6 , and the bottom heat dissipation channel 13 can discharge the excess heat guided down from the upper box body 5 .

[0035] The upper layer heating and drying mechanism 9 and the lower layer heating and drying mechanism 10 both include an upper cover plate 22, a microchannel blowing plate 29 and a mesh blowing plate 36 from top to bottom. The microchannel blowing plate 29 is connected with slide rails 30 on both sides. A heat exchange component is provided on the top of the microchannel blowing plate 29. The heat exchange component is connected to the main unit 2 through a pipeline 61. The mesh blowing plate 36 is provided with blowing holes 37 and a lampshade 38. The lampshade 38 is provided with a lampshade welding strip 39. A heating lamp is installed in the lampshade 38. After the air in the upper layer channel 11 and the lower layer channel 12 is sent into the upper layer heating and drying mechanism 9 and the lower layer heating and drying mechanism 10 through the suction mechanism, the temperature can be adjusted by the heat exchange component, and the microchannel blowing plate 29 and the mesh blowing plate 36 heat and dry the shoes downward. The heating lamp in the lampshade 38 can be heated together with the heat exchange component or heated separately to meet the adjustment requirements for different temperatures, realize accurate control of the temperature of the hot melt adhesive in the shoemaking process, and improve the efficiency and quality of shoemaking.

[0036] An upper inspection panel 23 and a lower inspection panel 24 are respectively provided on the upper heating and drying mechanism 9 and the lower heating and drying mechanism 10 , so as to facilitate maintenance of the internal structures of the upper heating and drying mechanism 9 and the lower heating and drying mechanism 10 .

[0037] The heat exchange component includes a collecting pipe 33, a flat tube 32 and a connecting pipe 34. The flat tubes 32 are evenly distributed between the two collecting pipes 33. The flat tubes 32 are connected to the microchannel blowing plate 29 through the bent edge plate 31. The connecting pipe 34 is connected to the collecting pipe 33. The connecting pipe 34 is provided with a first stop valve 35. Through the design of the collecting pipe 33, the flat tube 32 and the connecting pipe 34, the high-temperature gas in the main unit 2 can be transported to the heat exchange component, and the liquid can flow back to the main unit 2 after heat exchange, thereby achieving the purpose of circulating heating.

[0038] The main unit 2 is connected to the double-layer oven 1 through a pipe 61 for transferring the heat generated by high-temperature compression to the double-layer oven 1. The cold energy generated by evaporation on the low-temperature side of the main unit 2 is transferred to the workshop through the air outlet static pressure box 3 for cooling or discharged outdoors.

[0039] The main unit 2 includes a low-temperature side box body 40, an electric control box 42 and a chassis welding mechanism 41. The low-temperature side box body 40 and the electric control box 42 are both arranged on the top of the chassis welding mechanism 41. The outer side of the low-temperature side box body 40 is connected with an air outlet 45 cover plate 43. The low-temperature side box body 40 is provided with a fan 46 partition 44, a fan 46 and an evaporator 47. The fan 46 partition 44 is provided with an air outlet 45, and the fan 46 is connected to the air outlet 45. The chassis welding mechanism 41 is provided with a high and low temperature heat exchange component and a protective plate 48. The evaporator 47 is connected to the high and low temperature heat exchange component; the electric control box 42 is used to control the operation of the main unit 2. After the high and low temperature heat exchange component exchanges heat through the evaporator 47, the cold energy can be output from the low-temperature side box body 40 through the fan 46, and transported to the workshop through the air outlet static pressure box 3 for cooling or directly discharged outdoors.

[0040] The high and low temperature heat exchange component includes an evaporative condenser 49, a low temperature side compressor 50, a low temperature side gas-liquid separator 51, a low temperature side liquid reservoir 52, a high temperature side gas-liquid separator 54, a high temperature side enthalpy injection compressor 53, a high temperature side liquid reservoir 55 and an oil separator 62. The evaporative condenser 49 is connected to the low temperature side compressor 50, the low temperature side liquid reservoir 52, the high temperature side gas-liquid separator 54 and the high temperature side liquid reservoir 55 through pipelines. A copper filter 60 and an electronic expansion valve 56 are provided between the evaporative condenser 49 and the high temperature side liquid reservoir 55.

[0041] The low temperature side compressor 50 is connected to the low temperature side gas-liquid separator 51 through a pipeline, the low temperature side gas-liquid separator 51 and the low temperature side liquid reservoir 52 are connected to the evaporator 47, and a copper filter 60 is provided between the low temperature side liquid reservoir 52 and the evaporator 47.

[0042] The high-temperature side gas-liquid separator 54 is connected to the high-temperature side enthalpy spray compressor 53 through a pipeline, the high-temperature side enthalpy spray compressor 53 is connected to the oil separator 62 and the enthalpy spray capillary 57 through a pipeline, the enthalpy spray capillary 57 is connected to the high-temperature side liquid reservoir 55 through a pipeline, the oil separator 62 and the high-temperature side liquid reservoir 55 are connected to the pipeline 61, a ball valve 58 is provided between the oil separator 62 and the pipeline 61, and a second stop valve 59 is provided between the high-temperature side liquid reservoir 55 and the pipeline 61; it is convenient to transport heat to each double-layer oven 1, and at the same time, the cold can be transported to the workshop for cooling or discharged outdoors.

[0043] When the main unit 2 is actually working, the low-temperature side compressor 50 exhausts the air to the evaporative condenser 49, and after being cooled, enters the low-temperature side liquid storage tank 52, and then supplies the liquid to the electronic expansion valve 56 to enter the evaporator 47. The return air pipe of the evaporator 47 returns to the low-temperature side gas-liquid separator 51, and then returns to the low-temperature side compressor 50, forming a loop cycle.

[0044] The high-temperature side compressor exhaust passes through the ball valve 58 and enters the double-layer oven 1. The liquid in the double-layer oven 1 is concentrated into a pipe and enters the high-temperature side liquid storage tank 55. The high-temperature side liquid storage tank 55 is divided into two parts. One of the parts passes through the enthalpy spray capillary 57 and enters the high-temperature side enthalpy spray compressor 53 for cooling. The other part passes through the copper filter 60 to the electronic expansion valve 56 and enters the evaporative condenser 49 for evaporation (for cooling the low-temperature side). Then the return air pipe returns to the high-temperature side gas-liquid separator 54, and then returns to the high-temperature side enthalpy spray compressor 53 to form a loop.

[0045] It also includes an outdoor radiator 4, which is connected to the double-layer oven 1 and the main unit 2 through a pipe 61. After the temperature inside the double-layer oven reaches a constant temperature, the flow regulating valve will control a small flow rate to keep the oven at a constant temperature according to the constant temperature requirements, and other unnecessary heat will be discharged through the outdoor radiator.

[0046] Through the design of the above structure, not only can one main unit 2 drive one or more double-layer ovens 1 to work at the same time to meet the mass production requirements of the shoemaking process, but also the temperature of the double-layer oven 1 can be controlled by controlling the gas flow rate to ensure that the hot melt adhesive is evenly heated during the shoemaking process, so that the hot melt adhesive can be quickly softened and shaped, and the glue in the shoemaking process can be solidified to achieve fine control of the hot melt adhesive, improve the efficiency of shoemaking and the quality of the product, and at the same time, the generated cold energy can be used to cool the workshop or discharged outdoors, greatly reducing production energy consumption.

[0047] When the present invention is actually used, the heat generated is transmitted to each double-layer oven 1 through the main unit 2, and the shoes in the upper channel 11 and the lower channel 12 are heated and dried according to the shoemaking requirements. The cold energy generated by the main unit 2 is transmitted to the workshop through the air outlet static pressure box 3 for cooling in summer, and can be directly discharged outdoors in winter.

[0048] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A high and low temperature cascade machine for shoemaking, characterized in that: include At least one double-layer oven for heating, softening and shaping the hot melt adhesive in the shoe-making process and curing the glue in the shoe-making process; and a host, the host is connected to the double-layer oven through a pipeline, which is used to transport the heat generated by high-temperature compression to the double-layer oven, and the cold generated by evaporation on the low-temperature side of the host is transported to the workshop through the air outlet static pressure box for cooling or discharged to the outside; the double-layer oven includes an upper box, a lower box, an upper heating and drying mechanism and a lower heating and drying mechanism, the lower box is located below the upper box, the upper heating and drying mechanism and the lower heating and drying mechanism are arranged between the two upper boxes arranged oppositely, the upper heating and drying mechanism, the lower heating and drying mechanism and the two upper boxes cooperate to form an upper channel, the lower heating and drying mechanism and the two upper boxes are connected to the upper channel The boxes cooperate to form a lower channel; the upper heating and drying mechanism and the lower heating and drying mechanism include an upper cover plate, a microchannel blowing plate and a mesh blowing plate from top to bottom, the two sides of the microchannel blowing plate are connected with slide rails, the top of the microchannel blowing plate is provided with a heat exchange component, the heat exchange component is connected to the main machine through the pipeline, the mesh blowing plate is provided with blowing holes and a lampshade, the lampshade is provided with a lampshade welding strip, and a heating lamp is installed in the lampshade; the main machine includes a low-temperature side box body, an electric control box and a chassis welding mechanism, the low-temperature side box body and the electric control box are both arranged on the top of the chassis welding mechanism, the outer side of the low-temperature side box body is connected with an outlet cover plate, the A fan partition, a fan and an evaporator are arranged in the low-temperature side box, an air outlet is arranged on the fan partition, the fan is connected to the air outlet, the chassis welding mechanism is provided with a high-low temperature heat exchange component and a protective plate, the evaporator is connected to the high-low temperature heat exchange component; the high-low temperature heat exchange component includes an evaporative condenser, a low-temperature side compressor, a low-temperature side gas-liquid separator, a low-temperature side liquid reservoir, a high-temperature side gas-liquid separator, a high-temperature side enthalpy spray compressor, a high-temperature side liquid reservoir and an oil separator, the evaporative condenser is connected to the low-temperature side compressor, the low-temperature side liquid reservoir, the high-temperature side gas-liquid separator and the high-temperature side liquid reservoir through pipelines, and the low-temperature side compressor is connected to the low-temperature side compressor through pipelines. The low-temperature side gas-liquid separator is connected to the low-temperature side gas-liquid separator and the low-temperature side liquid reservoir by the evaporator, the high-temperature side gas-liquid separator is connected to the high-temperature side enthalpy spray compressor by a pipeline, the high-temperature side enthalpy spray compressor is connected to the oil separator and the enthalpy spray capillary by a pipeline, the enthalpy spray capillary is connected to the high-temperature side liquid reservoir by a pipeline, and the oil separator and the high-temperature side liquid reservoir are connected to the pipeline; when the main engine is actually working, the low-temperature side compressor exhausts air to the evaporative condenser, after cooling, enters the low-temperature side liquid reservoir, and then supplies liquid to the electronic expansion valve to enter the evaporator, the evaporator return pipe returns to the low-temperature side gas-liquid separator, and then returns to the low-temperature side compressor, forming a loop cycle;The exhaust gas of the high-temperature side compressor enters the double-layer oven through the ball valve. The liquid in the double-layer oven is concentrated into a pipe and enters the high-temperature side liquid storage tank. The high-temperature side liquid storage tank is divided into two parts. One of them passes through the enthalpy spray capillary tube to enter the high-temperature side enthalpy spray compressor for cooling, and the other passes through the copper filter to the electronic expansion valve to enter the evaporative condenser for evaporation, and then returns to the high-temperature side gas-liquid separator through the return pipe, and then returns to the high-temperature side enthalpy spray compressor to form a loop. ; 2. The high and low temperature cascade machine for shoemaking according to claim 1, characterized in that: An upper liner inner plate and a lower liner inner plate are respectively provided on one side of the upper box body close to the upper heating and drying mechanism and the lower heating and drying mechanism, and an upper air suction plate and a lower air suction plate are respectively provided on both sides of the upper box body close to the upper channel and the lower channel, and both the upper air suction plate and the lower air suction plate are provided with air suction ports, and the upper liner inner plate and the lower liner inner plate are provided with air suction mechanisms, and the heat in the upper channel and the lower channel is respectively input into the upper heating and drying mechanism and the lower heating and drying mechanism through the air suction ports and the air suction mechanisms to realize cyclic heating and drying.

3. The high and low temperature cascade machine for shoemaking according to claim 2, characterized in that: The air suction mechanism includes an upper air suction component connected to the upper inner liner inner plate and a lower air suction component connected to the lower inner liner inner plate, the upper air suction component includes an upper air guide channel, a first volute and a first motor, the upper air guide channel is connected to the air suction port through the first volute, the first motor is connected to the first volute, the lower air suction component includes a lower air guide channel, a second volute and a second motor, the lower air guide channel is connected to the air suction port through the second volute, and the second motor is connected to the second volute.

4. The high and low temperature cascade machine for shoemaking according to claim 1, characterized in that: A bottom heat dissipation channel is provided at the bottom of the lower box.

5. The high and low temperature cascade machine for shoemaking according to claim 1, characterized in that: The heat exchange component includes a collecting pipe, a flat tube and a connecting pipe. The flat tubes are evenly distributed between the two collecting pipes. The flat tubes are connected to the microchannel blowing plate through a bent edge plate. The connecting pipe is connected to the collecting pipe. A first stop valve is provided on the connecting pipe.

6. The high and low temperature cascade machine for shoemaking according to claim 1, characterized in that: It also includes an outdoor radiator, which is connected to the double-layer oven and the main machine through the pipeline.

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