Double-sided freezing shoe last pressing machine

Abstract

The utility model relates to the technical field of shoe last pressing machines, and provides a double-face freezing shoe last pressing machine which comprises an equipment assembly and a heat exchange mechanism arranged in the equipment assembly. The side face of the equipment assembly is provided with an operation area used for carrying out shoe last pressing operation, the operation area comprises a plurality of shoe last pressing stations, and each shoe last pressing station is internally provided with a shoe last pressing mechanism. Cold air pipelines are fixed to the inner side walls of the shoe last pressing station respectively, and a plurality of air inlet holes are formed in the side face, facing the shoe last pressing mechanism, of each cold air pipeline. All the cold air pipelines are jointly connected with a cooling main pipeline, and the heat exchange mechanism is connected with the cooling main pipeline so as to be used for conveying cold air to the cooling main pipeline. On the basis, each part of the sole can be uniformly cooled, so that the sole keeps good shoe last pressing forming quality.

Description

Technical Field

[0001] This application relates to the field of lasting machine technology, and more particularly to a double-sided refrigerated lasting machine. Background Technology

[0002] The lasting machine is a key piece of equipment in the lasting process of shoe soles. It has the functions of rapid pressurization and rapid cooling, which can realize the lasting of shoe soles and also realize the rapid bonding between shoe soles and shoe uppers.

[0003] Currently, Chinese patent CN219445841U discloses a double-sided pressing machine with air cooling, which includes a machine box and a machining center. The machining center is equipped with an operating table, a movable chamber, a cylinder, a bearing plate, a hot pressing unit, and an exhaust fan. In the specific pressing operation, the exhaust fan can be driven when the hot pressing unit is in operation. Based on its own rotational kinetic energy, it generates wind to blow out the temperature of the hot pressing unit, thereby playing a cooling role.

[0004] However, using exhaust fans to cool the soles can only directly reduce the temperature of the entire work area. During the cooling process, uneven heat distribution and temperature differences still exist in various parts of the sole, resulting in poor quality of sole last forming. This directly affects the performance and appearance of footwear products and needs to be improved. Utility Model Content

[0005] Based on this, this application provides a double-sided cryogenic pressing machine that can uniformly cool all parts of the shoe sole, so as to maintain good pressing and forming quality of the shoe sole.

[0006] The double-sided freeze pressing machine provided in this application adopts the following technical solution:

[0007] A double-sided refrigerated last pressing machine includes an equipment assembly and a heat exchange mechanism disposed inside the equipment assembly. The side of the equipment assembly is provided with a working area for pressing operations, the working area including multiple pressing stations, each pressing station being provided with a pressing mechanism. Each inner wall of the pressing station is fixed with a cold air duct, and each cold air duct facing the pressing mechanism has multiple air inlets. All cold air ducts are connected to a cooling main circuit, and the heat exchange mechanism is connected to the cooling main circuit to deliver cold air to the cooling main circuit.

[0008] By adopting the above technical solution, during the lasting operation, the heat exchange mechanism can be in working condition and deliver cold air to the cooling main circuit. The cold air enters each cold air duct along the cooling main circuit and is blown out from each air inlet of the cold air duct, which can effectively cool down the lasting station. Since the sole material is placed on the lasting mechanism, each air inlet is directly facing the lasting mechanism, and the blown cold air can be directly blown onto the sole, thereby uniformly cooling down all parts of the sole and maintaining good lasting quality of the sole.

[0009] Optionally, a horizontal partition is fixed inside the work area, and the work area is divided into two sets of pressing stations by the horizontal partition; the pressing mechanism includes a first drive component fixed to the equipment assembly and a pressing plate connected to the movable end of the first drive component. The first drive component is used to force the pressing plate to move towards the horizontal partition in order to complete the pressing operation.

[0010] By adopting the above technical solution, the partition plate divides all the lasting stations into upper and lower groups, which can increase the number of lasting stations in a limited space, thereby improving the space utilization of the lasting machine and facilitating the batch production of shoe soles.

[0011] Optionally, each pressing station is equipped with a return air duct on its inner wall. In the waiting state, the pressing plate is normally pressed against the opening of the return air duct. All return air ducts are connected to a common return air main, which is connected to the air inlet of the heat exchange mechanism.

[0012] By adopting the above technical solution, when the shoe sole is being pressed and formed at the pressing station, the first driving component forces the pressing plate to move closer to the transverse partition, which allows the return air duct to be in the open state. During the operation, the pressing station is in a closed state, thereby reducing the escape of cold air to the outside. After the cold air enters the pressing station through the air inlet, it can pass through the return air duct, the return air main, and return to the air inlet of the heat exchange mechanism. At this time, the air temperature is low, and the energy consumption required for the heat exchange mechanism to reduce the air temperature to the set temperature is small, which can achieve the effect of energy saving and consumption reduction. In addition, when the pressing operation is completed and the pressing plate is reset and covers the return air duct again, the pressing station is no longer in a closed state. At this time, the pressing plate normally covers the return air duct, which can reduce the entry of high-temperature air from the external environment into the inner side of the return air main, thus maintaining a good energy saving and consumption reduction effect.

[0013] Optionally, the heat exchange mechanism includes an evaporator and a condenser that work together, with the air inlet of the evaporator connected to the return air main and the air outlet of the evaporator connected to the cooling main.

[0014] By employing the above technical solution, the evaporator absorbs heat from the air, causing the low-temperature, low-pressure liquid refrigerant to evaporate into a gaseous state, thereby blowing cold air into the cooling main circuit and cold air ducts, completing the "heat absorption" stage of the refrigeration cycle; the condenser cools the high-temperature, high-pressure gaseous refrigerant into a liquid state, releasing heat to the external environment through heat exchange, thus completing the "heat release" stage of the refrigeration cycle. The combined use of the evaporator and condenser completes the entire refrigeration cycle.

[0015] Optionally, each horizontally adjacent pressing station is separated by a vertical partition, and the sides of the vertical partition are covered with heat insulation pads.

[0016] By adopting the above technical solution, each lasting station is separated by vertical partitions, and the heat insulation pads pasted on the vertical partitions can reduce the heat transfer between adjacent lasting stations. This helps to maintain the internal temperature of the corresponding lasting station at a set temperature during the lasting operation, reducing the possibility of temperature fluctuations affecting the quality of shoe sole molding.

[0017] Optional, the insulation pad is an EVA foam pad.

[0018] By adopting the above technical solution, the EVA foam pad has good heat insulation performance, which can reduce heat transfer between adjacent pressing stations. At the same time, due to the uneven surface structure of the EVA foam itself, it can reduce the condensation of water droplets and their adhesion to the surface of the heat insulation pad when the pressing station is cooled, thereby reducing the possibility of water droplets coming into contact with the shoe sole and causing a decrease in molding quality.

[0019] Optionally, the pressing station is equipped with a sealing mechanism, which includes a second drive component fixed to the equipment assembly and a door panel connected to the movable end of the second drive component.

[0020] By adopting the above technical solution, during the lasting process of the shoe sole, the door panel is forced to move by the action of the second driving component. The door panel can cover the open side of the lasting station and keep the lasting station in a closed state, reducing the possibility of the cooling inside the lasting station dissipating to the outside air.

[0021] Optionally, there are two working areas, located on opposite sides of the equipment assembly.

[0022] By adopting the above technical solution and setting up working areas on both opposite sides of the equipment assembly, the number of pressing stations can be further increased, the space utilization rate of the pressing machine can be improved, and it is beneficial to the mass production of shoe soles.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. During the lasting process, the cold air blown out from each air inlet is directed at the lasting mechanism, and the cold air blown out can directly blow onto the sole, thereby cooling all parts of the sole evenly and maintaining good lasting quality of the sole.

[0025] 2. By setting a return air duct, the return air duct is only open when the first drive component is activated. After the cold air enters the pressing station through the air inlet, it can pass through the return air duct and the return air main and return to the air inlet of the heat exchange mechanism. At this time, the air temperature is low, and the energy consumption required for the heat exchange mechanism to reduce the air temperature to the set temperature is small, which can achieve the effect of energy saving and consumption reduction.

[0026] 3. By setting up horizontal and vertical partitions to divide the work area into multiple pressing stations, the number of pressing stations can be increased in a limited space, thereby improving the space utilization of the pressing machine and facilitating the batch production of shoe soles. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the overall structure from another direction in an embodiment of this application;

[0029] Figure 3 This is a longitudinal schematic diagram of the equipment assembly in the embodiments of this application, mainly showing the structure of the pressing mechanism and the sealing mechanism;

[0030] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0031] Figure 5 This is a half-sectional structural diagram of the equipment assembly in the embodiments of this application, mainly showing the internal structure of the last pressing machine.

[0032] Explanation of reference numerals in the attached drawings: 1. Equipment assembly; 11. Cooling main circuit; 12. Return air main circuit; 2. Working area; 21. Horizontal partition; 22. Vertical partition; 221. Heat insulation pad; 3. Pressing station; 31. First pressing station; 32. Second pressing station; 33. Cold air duct; 331. Air inlet; 34. Connecting pipe; 35. Return air duct; 4. Pressing mechanism; 41. First driving component; 42. Pressing plate; 43. Shoe mold base; 44. Shoe last component; 5. Heat exchange mechanism; 51. Evaporator; 52. Condenser; 6. Sealing mechanism; 61. Second driving component; 62. Door panel. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] This application discloses a double-sided freeze pressing machine.

[0035] Reference Figure 1 A double-sided refrigerated lasting machine includes an equipment assembly 1 and a heat exchange mechanism 5 disposed inside the equipment assembly 1. The equipment assembly 1 has a working area 2 on its side for lasting operations. In this embodiment, there are two working areas 2, respectively disposed on two opposite sides of the equipment assembly 1. It is understood that in other feasible embodiments, the working area 2 may also be disposed only on one side of the equipment assembly 1, and is not limited to the arrangement shown in this embodiment.

[0036] Reference Figure 2 , Figure 3 The work area 2 is internally divided into two sub-areas by a horizontal partition 21. Each sub-area contains multiple vertical partitions 22, which are equidistantly arranged along the extension direction of the work area 2. Based on this, the work area 2 is divided into multiple pressing stations 3 by the horizontal and vertical partitions 21 and 22. All pressing stations 3 are arranged in two groups, side-by-side in a horizontal direction. Furthermore, each vertical partition 22 has a heat insulation pad 221 attached to its side. In this embodiment, the heat insulation pad 221 is made of EVA foam material, which has good heat insulation properties and can reduce heat transfer between adjacent pressing stations 3.

[0037] Reference Figure 4 Each pressing station 3 is equipped with a pressing mechanism 4. The pressing mechanism 4 includes a first driving component 41 and a pressing plate 42. The first driving component 41 is configured as a cylinder and is fixed to the equipment assembly 1. The movable end of the first driving component 41 extends into the pressing station 3 and is connected to the pressing plate 42. In the waiting state, the first driving component 41 in this embodiment is in an inward retracted state, at which time the pressing plate 42 can stay on the side of the pressing station 3 away from the transverse partition 21.

[0038] The last pressing mechanism 4 also includes a shoe mold base 43 and a shoe last component 44. In this embodiment, the last pressing station 3 located above the transverse partition 21 is defined as the first last pressing station 31, and the shoe mold base 43 in the first last pressing station 31 is fixed to the top surface of the transverse partition 21. In addition, the last pressing station 3 located below the transverse partition 21 is defined as the second last pressing station 32, and the shoe mold base 43 in the second last pressing station 32 is fixed to the top surface of the last pressing plate 42.

[0039] During the lasting process, the operator places the heated sole on the shoe mold base 43, and then places the shoe last component 44 on the sole. By controlling the first drive component 41, the lasting plate 42 located in the first lasting station 31 can move downward and force the shoe last component 44 to extrude and shape the sole. The lasting plate 42 located in the second lasting station 32 can move upward together with the shoe mold base 43 and the shoe last component 44. After the shoe last component 44 comes into contact with the transverse partition 21, it can also extrude and shape the sole.

[0040] Reference Figure 4 Each inner wall of the last-pressing station 3 is fixed with a cold air duct 33. Each cold air duct 33 has multiple air inlets 331 on the side facing the last-pressing mechanism 4. All air inlets 331 are equidistantly arranged along the extension direction of the cold air duct 33. In this embodiment, there are two cold air ducts 33, which are fixed to two opposite sides of the last-pressing station 3. It is understood that in other feasible embodiments, the number of cold air ducts 33 on one side wall can also be multiple sets, or the number of cold air ducts 33 on the other side walls can also be arranged in various ways to improve the uniformity of cooling the shoe sole, and is not limited to the method shown in this embodiment.

[0041] Two cold air ducts 33 located at the same pressing station 3 are connected by a common connecting pipe 34, which is equipped with an electric valve for controlling the opening and closing of the pipe; at the same time, refer to Figure 5 The equipment assembly 1 has a cooling main 11 fixedly mounted inside. In this embodiment, there are two cooling mains 11. All connecting pipes 34 of the first pressing station 31 are connected to one of the cooling mains 11 via corrugated hoses (not shown in the figure), and all connecting pipes 34 of the second pressing station 32 are also connected to the other cooling main 11 via corrugated hoses. The two cooling mains 11 in this embodiment are stacked on top of each other, which helps to save internal space of the equipment assembly 1 and thus reduce the overall size of the pressing machine.

[0042] Reference Figure 5 There are two sets of heat exchange mechanisms 5, each connected to one of the two cooling mains 11. The heat exchange mechanisms 5 deliver cool air to the cooling assembly, which is then blown out from the air inlet 331 to cool the sole of the shoe. Specifically, the heat exchange mechanism 5 includes an evaporator 51 and a condenser 52. The evaporator 51 is fixed inside the equipment assembly 1, and the condenser 52 is fixed to the top of the equipment assembly 1. The evaporator 51 and the condenser 52 work together to achieve a refrigeration cycle. The air outlet of the evaporator 51 is connected to the cooling mains 11 via a corrugated flexible hose, which blows the generated cool air into the cooling pipes and the cold air duct 33.

[0043] Back Figure 4 Each pressing station 3 has a return air duct 35 installed on its inner wall; in the first pressing station 31, the return air duct 35 is embedded in the top inner wall of the first pressing station 31, while in the second pressing station 32, the return air duct 35 is embedded in the bottom inner wall of the second pressing station 32. (See also...) Figure 5 The equipment assembly 1 has a fixed internal frame with a return air main 12. There are two return air mains 12. All return air pipes 35 in the first pressing station 31 are connected to one of the return air mains 12 via corrugated hoses. All return air pipes 35 in the second pressing station 32 are also connected to the other return air main 12 via corrugated hoses. In addition, the return air main 12 is connected to the air inlet of the evaporator 51 via corrugated hoses. Based on this, during the pressing operation, cold air can return to the evaporator 51 via the return air pipes 35 for re-cooling. The energy consumption required for the evaporator 51 to reduce the air temperature to the set temperature is relatively small, which can achieve the effect of energy saving and consumption reduction.

[0044] Back Figure 3 The equipment assembly 1 is also equipped with a sealing mechanism 6 for closing the pressing station 3. The specific number of sealing mechanisms 6 is equal to the number of pressing stations 3, and each set of sealing mechanisms 6 is respectively set on the open side of each pressing station 3. Specifically, the sealing mechanism 6 includes a second driving component 61 and a door panel 62. The second driving component 61 is configured as a cylinder and is fixed to the equipment assembly 1. The movable end of the second driving component 61 is connected to the door panel 62. In the waiting state, the second driving component 61 in this embodiment is in an inward retracted state. At this time, the door panel 62 can be hidden in the side wall of the pressing station 3 away from the transverse partition 21. During the pressing operation, the second driving component 61 moves and drives the door panel 62 to move closer to the transverse partition 21, so that the door panel 62 can smoothly cover the open side of the pressing station 3, thereby keeping the pressing station 3 in a closed state and reducing the possibility of cold air inside the pressing station 3 escaping to the outside air.

[0045] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-sided refrigerated last pressing machine, comprising an equipment assembly (1) and a heat exchange mechanism (5) disposed inside the equipment assembly (1), characterized in that: The equipment assembly (1) has a working area (2) on its side for pressing the last, the working area (2) includes multiple pressing stations (3), each pressing station (3) is equipped with a pressing mechanism (4); each inner wall of the pressing station (3) is fixed with a cold air duct (33), each cold air duct (33) is provided with multiple air inlets (331) on its side facing the pressing mechanism (4); all cold air ducts (33) are connected to a cooling main circuit (11), and the heat exchange mechanism (5) is connected to the cooling main circuit (11) to deliver cold air to the cooling main circuit (11).

2. The double-sided freeze pressing machine according to claim 1, characterized in that: The work area (2) is fixed with a horizontal partition (21), and the work area (2) is divided into two sets of pressing stations (3) by the horizontal partition (21); the pressing mechanism (4) includes a first drive member (41) fixed to the equipment assembly (1) and a pressing plate (42) connected to the movable end of the first drive member (41). The first drive member (41) is used to force the pressing plate (42) to move closer to the horizontal partition (21) to complete the pressing operation.

3. The double-sided freeze pressing machine according to claim 2, characterized in that: Each of the pressing stations (3) is provided with a return air pipe (35) on its inner wall. When waiting for materials, the pressing plate (42) is normally abutted against the opening of the return air pipe (35). Each of the return air pipes (35) is connected to a return air main (12), which is connected to the air inlet of the heat exchange mechanism (5).

4. The double-sided freeze pressing machine according to claim 3, characterized in that: The heat exchange mechanism (5) includes an evaporator (51) and a condenser (52) used in cooperation with each other. The air inlet of the evaporator (51) is connected to the return air main (12), and the air outlet of the evaporator (51) is connected to the cooling main (11).

5. The double-sided freeze pressing machine according to claim 1, characterized in that: Each horizontally adjacent pressing station (3) is separated by a vertical partition (22), and a heat insulation pad (221) is pasted on the side of the vertical partition (22).

6. The double-sided freeze pressing machine according to claim 5, characterized in that: The heat insulation pad (221) is an EVA foam pad.

7. The double-sided freeze pressing machine according to claim 1, characterized in that: The pressing station (3) is equipped with a sealing mechanism (6), which includes a second drive member (61) fixed to the equipment assembly (1) and a door panel (62) connected to the movable end of the second drive member (61).

8. The double-sided freeze pressing machine according to claim 1, characterized in that: The work area (2) is provided in two parts, and is located on two opposite sides of the equipment assembly (1).

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