Vacuum type hot plate machine

Abstract

The invention discloses a vacuum type hot plate machine, belongs to the technical field of vamp processing, and solves the problem that the existing hot plate machine can simultaneously realize quick cooling and can simultaneously meet the requirements of leather vamp hot pressing processing aiming at a plurality of groups of molds. Comprising a bottom frame, a portal frame fixedly connected to the bottom frame, a hot-pressing assembly and a cold-pressing assembly which are arranged on the portal frame and can ascend and descend, a supporting frame set fixedly connected to the bottom frame and located below the hot-pressing assembly and the cold-pressing assembly, and a first-stage vacuum plate, a second-stage vacuum plate and a third-stage vacuum plate which can ascend and descend and move on the supporting frame set. The supporting frame set is provided with a waiting station, a cold pressing station right opposite to the cold pressing assembly and a hot pressing station right opposite to the hot pressing assembly. When the device is operated, the leather vamp is placed in the mold, then the mold is closed, and the mold is adsorbed on the vacuum plate. The motor drives the belt pulley to rotate, and the transmission belt drives the direction adjusting assembly to move to achieve station circulation. The mold is clamped, heated and cooled through the hot-pressing assembly and the cold-pressing assembly, and the forming procedure is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of shoe upper processing, and in particular to a vacuum hot plate machine. Background Art

[0002] The structure of modern footwear usually consists of core components such as a sole, a tongue, and a main shoe upper. In the shoe-making process, the sole can be divided into a wear-resistant outsole, a cushioning midsole, and an insole that contacts the foot. The tongue plays a role in fixing the ankle and improving wearing comfort. As the main part of the footwear, the shoe upper needs to be processed three-dimensionally according to the style requirements. During the production process, the originally flat leather shoe upper needs to be precisely pressed into a convex arc (such as the rounded contour of the toe) or a concave curved surface (such as the converging shape at the heel) through hot pressing or die forming processes. This process is customized according to the three-dimensional structure of the shoe design drawing. When pressing the mold, it is necessary to strictly control the temperature, pressure, and time parameters to ensure that the leather fibers remain tough during the shaping process, and finally form a three-dimensional shoe upper with both beautiful arcs and a shape that fits the foot. This lays the foundation for the subsequent splicing process of the shoe upper and the sole, and at the same time endows the footwear with smooth lines and practical wearing functions.

[0003] In order to achieve the above actions, a hot press is usually used to process the leather shoe upper, so that corresponding shapes and concave-convex patterns can be formed on the leather shoe upper for subsequent processing. However, when currently processing with a hot press, only the leather shoe upper in one set of molds can be hot pressed each time. It is necessary to wait until the leather shoe upper is hot pressed and the mold leaves the hot press before the operator can open the mold to take out the leather shoe upper, and then place the next set of leather shoe uppers. This not only has poor efficiency, but also because the mold is not cooled, protective measures need to be taken when manually touching it to avoid being scalded by the mold. In addition, because the mold is not cooled, it also requires that when manually placing the leather shoe upper, the position needs to be placed accurately as much as possible. Otherwise, when the leather shoe upper is placed into the mold, it is easy to leave marks due to the temperature of the mold. Therefore, the current hot plate machine is required to have the requirements of rapid cooling and the ability to complete the hot pressing process of leather shoe uppers for multiple sets of molds at the same time.

[0004] Therefore, a vacuum hot plate machine is proposed to solve or alleviate the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to propose a vacuum hot plate machine.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions: A vacuum hot plate machine comprises a base frame, a gantry fixedly connected to the base frame, a hot pressing assembly and a cold pressing assembly which can be raised and lowered on the gantry, a support frame group fixedly connected to the base frame and located below the hot pressing assembly and the cold pressing assembly, and a primary vacuum plate, a secondary vacuum plate and a tertiary vacuum plate which can be raised and lowered and displaced on the support frame group. The support frame group has a waiting station, a cold pressing station facing the cold pressing assembly, and a hot pressing station facing the hot pressing assembly. In an initial state, the primary vacuum plate, the secondary vacuum plate The first-level vacuum plate and the third-level vacuum plate correspond to the waiting station, the cold pressing station and the hot pressing station respectively. In the working state, the first-level vacuum plate circulates according to the waiting station, the hot pressing station and the cold pressing station, and the second-level vacuum plate and the third-level vacuum plate circulate in the order of the first-level vacuum plate. The first-level vacuum plate, the second-level vacuum plate and the third-level vacuum plate are used to generate negative pressure on the placed molds. The hot pressing component performs instantaneous hot pressurization on the molds on the hot pressing station, and the cold pressing component cools down and pressurizes the molds on the cold pressing station.

[0007] Preferably, the support frame group includes a front support frame, a middle support frame facing the cold pressing assembly, and a rear support frame facing the hot pressing assembly which are arranged in sequence. The middle support frame and the rear support frame are both provided with a lower horizontal plate which can buffer the lifting and lowering, a heat insulation plate fixedly connected to the top surface of the lower horizontal plate, and a lower temperature regulating plate fixedly connected to the top surface of the heat insulation plate. The lower temperature regulating plate located above the rear support frame is used for heating, and the lower temperature regulating plate located above the middle support frame is used for cooling.

[0008] Preferably, the outer rings of the middle support frame and the rear support frame are fixedly connected to a mounting seat, a linear bearing is fixedly connected to the mounting seat, a lower horizontal column is slidably connected inside the linear bearing, the upper end of the lower horizontal column is fixedly connected to the bottom surface of the lower horizontal plate, and the outer ring of the lower horizontal column is provided with a compression spring that contacts the bottom surface of the lower horizontal plate and the linear bearing.

[0009] Preferably, the cold pressing component includes a cold pressing cylinder fixedly connected to the gantry, a cold pressing level adjustment plate fixedly connected to the piston rod in the cold pressing cylinder, a cold pressing pressure plate fixedly connected below the cold pressing level adjustment plate, and a cold pressing plate fixedly connected to the bottom of the cold pressing pressure plate, and the cold pressing plate is used to connect the refrigerant, and the hot pressing component includes a hot pressing cylinder fixedly connected to the gantry, a hot pressing level adjustment plate fixedly connected to the piston rod in the hot pressing cylinder, a hot pressing pressure plate fixedly connected below the hot pressing level adjustment plate, and a hot pressing plate fixedly connected to the bottom of the hot pressing pressure plate, and the hot pressing plate is used to exchange heat with a heat source inside or entering the inside.

[0010] Preferably, an outer orientation adjustment component, a middle orientation adjustment component, and an inner orientation adjustment component are arranged on the chassis on both sides of the support frame group and are arranged in sequence from outside to inside. The primary vacuum plate, the secondary vacuum plate, and the tertiary vacuum plate are respectively installed on the movable ends of the outer orientation adjustment component, the middle orientation adjustment component, and the inner orientation adjustment component to achieve lifting in the height direction and cyclic rotation of the station sequence. Front mounting grooves and rear mounting grooves are respectively formed at the front and rear ends of the chassis. A driving transmission component and a driven transmission component that are in transmission connection with each other are respectively arranged in the rear mounting groove and the front mounting groove. The driving transmission component and the driven transmission component are mutually driven by a plurality of transmission belts to guide the outer orientation adjustment component, the middle orientation adjustment component, and the inner orientation adjustment component to achieve cyclic rotation of the station sequence.

[0011] Preferably, the outer orientation adjustment component includes an outer rail fixedly connected to the chassis, an outer cylinder fixing plate slidably connected to the outer rail, and an outer cylinder vertically fixedly connected to the outer cylinder fixing plate. The piston rods of the outer cylinders on both sides are commonly fixedly connected to a primary platform frame. The primary vacuum plate is installed in the primary platform frame. The outer cylinder fixing plate is fixedly connected to one of the transmission belts through an outer synchronous belt fastening plate.

[0012] Preferably, the middle orientation adjustment component includes a middle rail fixedly connected to the chassis, a first rail and a second rail on both sides of the middle rail, a middle and lower cylinder fixing plate slidably connected to the middle rail and located between the first rail and the second rail, a primary middle cylinder vertically fixedly connected to the middle and lower cylinder fixing plate, an upper middle cylinder fixing plate fixedly connected to the piston rod of the middle and lower cylinder and located between the first rail and the second rail, and a secondary middle cylinder vertically fixedly connected to the upper middle cylinder fixing plate. The piston rods of the secondary middle cylinders on both sides are commonly fixedly connected to a secondary platform frame. The secondary vacuum plate is installed in the secondary platform frame. The middle and lower cylinder fixing plate is fixedly connected to one of the transmission belts through a middle synchronous belt fastening plate.

[0013] Preferably, the inner orientation adjustment component includes an inner rail fixedly connected to the chassis, an inner cylinder fixing plate slidably connected to the inner rail, and an inner cylinder vertically fixedly connected to the inner cylinder fixing plate. The piston rods of the inner cylinders on both sides are fixedly connected to a tertiary platform frame through buffer mounting sleeves. The tertiary vacuum plate is installed in the tertiary platform frame. The inner cylinder fixing plate is fixedly connected to one of the transmission belts through an inner synchronous belt fastening plate.

[0014] Preferably, the driven transmission component includes a front rotating shaft rotatably connected to the front mounting groove through a front bearing seat, an outer driven belt pulley, a middle driven belt pulley, and an inner driven belt pulley installed on the front rotating shaft. The outer driven belt pulley, the middle driven belt pulley, and the inner driven belt pulley are used for transmission connection with the transmission belt.

[0015] Preferably, the active transmission component includes a primary rear shaft, a secondary rear shaft and a tertiary rear shaft rotatably connected in the rear mounting groove through a rear bearing seat, a primary reduction motor, a secondary reduction motor, and a tertiary reduction motor fixedly connected to the base frame and respectively located below the primary rear shaft, the secondary rear shaft and the tertiary rear shaft, the primary reduction motor, the secondary reduction motor, and the tertiary reduction motor are respectively transmission-connected to the primary rear shaft, the secondary rear shaft and the tertiary rear shaft, the primary rear shaft, the secondary rear shaft and the tertiary rear shaft are respectively fixedly connected with an outer main pulley, a middle main pulley and an inner main pulley, the outer main pulley, the middle main pulley and the inner main pulley are used for transmission connection with a transmission belt.

[0016] The present invention has the following beneficial effects: When the present invention is operated, the leather upper is placed in the mold, the mold is closed and adsorbed on the vacuum plate. The motor drives the pulley to rotate, and the transmission belt drives the position adjustment component to move, so as to realize the station flow. The mold is clamped, heated and cooled by the hot pressing and cold pressing components to complete the molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention after removing the outer shell; Figure 3 for Figure 2 The enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure of the present invention after removing the outer shell, gantry, primary cylinder and secondary cylinder; Figure 5 for Figure 4 The enlarged view of point B in the middle; Figure 6 This is an exploded view of the present invention after removing the outer shell, gantry, primary cylinder and secondary cylinder; Figure 7 A schematic diagram of the structure of the base frame, the outer orientation adjustment component, the middle orientation adjustment component, and the inner orientation adjustment component of the present invention; Figure 8 for Figure 7 Enlarged view of point C in the middle.

[0019] In the figure: 1, chassis; 101, rear mounting groove; 102, front mounting groove; 2, outer housing; 3, gantry; 4, cold pressing cylinder; 401, cold pressing horizontal adjusting plate; 402, cold pressing pressure plate; 403, cold pressing plate; 5, hot pressing cylinder; 501, hot pressing horizontal adjusting plate; 502, hot pressing pressure plate; 503, heating plate; 6, front support frame; 7, middle support frame; 8, rear support frame; 801, mounting seat; 802, linear bearing; 803, lower horizontal column; 804, lower horizontal plate; 805, heat insulation plate; 806, lower temperature adjusting plate; 901, rear bearing seat; 902, first-stage rear rotating shaft; 9021, outer main belt pulley; 903, second-stage rear rotating shaft; 9031, middle main belt pulley; 904, third-stage rear rotating shaft; 9041, inner main belt pulley; 905, first-stage reduction motor; 9051, first-stage driven belt pulley; 906, second-stage reduction motor; 9061, second-stage driven belt pulley; 907, third-stage reduction motor; 9071, third-stage driven belt pulley; 1001, front bearing seat; 1002, front rotating shaft; 1003, outer driven belt pulley; 1004, middle driven belt pulley; 1005, inner driven belt pulley; 1101, outer rail; 1102, middle rail; 1103, inner rail; 1201, outer cylinder fixing plate; 1202, outer synchronous belt fastening plate; 1203, outer cylinder; 1301, middle and lower cylinder fixing plate; 1302, first-stage middle cylinder; 1303, middle and upper cylinder fixing plate; 1304, second-stage middle cylinder; 1305, first track; 1306, second track; 1401, inner cylinder fixing plate; 1402, inner synchronous belt fastening plate; 1403, inner cylinder; 1501, first-stage platform frame; 1502, first-stage vacuum plate; 1601, second-stage platform frame; 1602, second-stage vacuum plate; 1701, third-stage platform frame; 1702, third-stage vacuum plate; 1703, buffer mounting sleeve. Detailed implementation mode

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0022] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0024] In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] A vacuum hot plate machine, such as Figures 1 to 8As shown in the figure, it includes a chassis 1, a gantry 3 fixedly connected to the chassis 1, a housing 2 fixedly connected to the chassis 1 and located outside the gantry 3, a hot pressing assembly and a cold pressing assembly that can be lifted on the gantry 3, a support frame group fixedly connected to the chassis 1 and located below the hot pressing assembly and the cold pressing assembly, and a first-stage vacuum plate 1502, a second-stage vacuum plate 1602, and a third-stage vacuum plate 1702 that can be lifted and displaced on the support frame group. There are a to-be-processed station, a cold pressing station facing the cold pressing assembly, and a hot pressing station facing the hot pressing assembly on the support frame group. In the initial state, the first-stage vacuum plate 1502, the second-stage vacuum plate 1602, and the third-stage vacuum plate 1702 respectively correspond to the to-be-processed station, the cold pressing station, and the hot pressing station. In the working state, the first-stage vacuum plate 1502 rotates in a cycle of the to-be-processed station, the hot pressing station, and the cold pressing station, and the second-stage vacuum plate 1602 and the third-stage vacuum plate 1702 rotate in sequence following the rotation sequence of the first-stage vacuum plate 1502. The first-stage vacuum plate 1502, the second-stage vacuum plate 1602, and the third-stage vacuum plate 1702 are used to generate negative pressure on the placed molds. The hot pressing assembly performs instant heat pressing on the molds at the hot pressing station, and the cold pressing assembly performs cooling pressing on the molds at the cold pressing station.

[0027] It should be noted that the first-stage vacuum plate 1502, the second-stage vacuum plate 1602, and the third-stage vacuum plate 1702 are all of hollow structure, and micropores communicating with the inside are opened on the top surfaces of the first-stage vacuum plate 1502, the second-stage vacuum plate 1602, and the third-stage vacuum plate 1702. The first-stage vacuum plate 1502, the second-stage vacuum plate 1602, and the third-stage vacuum plate 1702 are all connected to a vacuum machine to generate negative pressure.

[0028] The support frame group includes a front support frame 6 arranged in sequence, a middle support frame 7 facing the cold pressing assembly, and a rear support frame 8 facing the hot pressing assembly. On both the middle support frame 7 and the rear support frame 8, there are provided a lower horizontal plate 804 that can buffer and lift, a heat insulation plate 805 fixedly connected to the top surface of the lower horizontal plate 804, and a lower temperature adjustment plate 806 fixedly connected to the top surface of the heat insulation plate 805. The lower temperature adjustment plate 806 located above the rear support frame 8 is used for heating, and the lower temperature adjustment plate 806 located above the middle support frame 7 is used for cooling. Specifically, an induction heating wire or a hot pressing plate is arranged inside the lower temperature adjustment plate 806 located above the rear support frame 8 and is connected to a steam boiler, while the lower temperature adjustment plate 806 located above the middle support frame 7 is connected to a refrigerator. Specifically, mounting seats 801 are fixedly connected to the outer circles of the middle support frame 7 and the rear support frame 8, linear bearings 802 are fixedly connected to the mounting seats 801, a lower horizontal column 803 is slidably connected inside the linear bearings 802, the upper end of the lower horizontal column 803 is fixedly connected to the bottom surface of the lower horizontal plate 804, and a compression spring that abuts against the bottom surface of the lower horizontal plate 804 and the linear bearing 802 is sleeved outside the lower horizontal column 803.

[0029] As Figure 1 and Figure 2As shown in the figure, the cold pressing assembly includes a cold pressing cylinder 4 fixedly connected to the gantry 3, a cold pressing horizontal adjustment plate 401 fixedly connected to the piston rod in the cold pressing cylinder 4, a cold pressing pressure plate 402 fixedly connected below the cold pressing horizontal adjustment plate 401, and a cold pressing plate 403 fixedly connected to the bottom surface of the cold pressing pressure plate 402. The cold pressing plate 403 is used to connect the refrigerant. Specifically, for example, the cold pressing plate 403 is connected to a refrigerator; the hot pressing assembly includes a hot pressing cylinder 5 fixedly connected to the gantry 3, a hot pressing horizontal adjustment plate 501 fixedly connected to the piston rod in the hot pressing cylinder 5, a hot pressing pressure plate 502 fixedly connected below the hot pressing horizontal adjustment plate 501, and a hot pressing plate fixedly connected to the bottom surface of the hot pressing pressure plate 502. The hot pressing plate is used for heat exchange with the heat source inside or entering it. Specifically, for example, induction heating wires are provided inside the hot pressing plate or the hot pressing plate is connected to a steam boiler.

[0030] As Figure 7 and Figure 8 As shown in the figure, on the chassis 1, there are an outer orientation adjustment assembly, a middle orientation adjustment assembly, and an inner orientation adjustment assembly arranged in sequence from the outside to the inside on both sides of the support frame group. The primary vacuum plate 1502, the secondary vacuum plate 1602, and the tertiary vacuum plate 1702 are respectively installed on the movable ends of the outer orientation adjustment assembly, the middle orientation adjustment assembly, and the inner orientation adjustment assembly to achieve lifting in the height direction and cyclic rotation of the working positions in sequence. At the front and rear ends of the chassis 1, a front installation groove 102 and a rear installation groove 101 are respectively opened. An active transmission assembly and a driven transmission assembly that are in transmission connection with each other are respectively arranged in the rear installation groove 101 and the front installation groove 102. The active transmission assembly and the driven transmission assembly are mutually transmitted through a plurality of transmission belts to guide the outer orientation adjustment assembly, the middle orientation adjustment assembly, and the inner orientation adjustment assembly to achieve cyclic rotation of the working positions in sequence.

[0031] As Figure 7 and Figure 8As shown in the figure, the outer orientation adjustment assembly includes an outer rail 1101 fixedly connected to the chassis 1, an outer cylinder 1203 fixing plate 1201 slidably connected to the outer rail 1101, and an outer cylinder 1203 vertically and fixedly connected to the outer cylinder 1203 fixing plate 1201. The piston rods of the outer cylinders 1203 on both sides are commonly fixedly connected to a first-level platform frame 1501. A first-level vacuum plate 1502 is installed inside the first-level platform frame 1501. The outer cylinder 1203 fixing plate 1201 is fixedly connected to one of the transmission belts through an outer synchronous belt fastening plate 1202; the middle orientation adjustment assembly includes a middle rail 1102 fixedly connected to the chassis 1, a first track 1305 and a second track 1306 located on both sides of the middle rail 1102, a middle and lower cylinder fixing plate 1301 slidably connected to the middle rail 1102 and located between the first track 1305 and the second track 1306, a first-level middle cylinder 1302 vertically and fixedly connected to the middle and lower cylinder fixing plate 1301, an upper and middle cylinder fixing plate 1303 fixedly connected to the piston rod of the middle and lower cylinder and located between the first track 1305 and the second track 1306, and a second-level middle cylinder 1304 vertically and fixedly connected to the upper and middle cylinder fixing plate 1303. The piston rods of the second-level middle cylinders 1304 on both sides are commonly fixedly connected to a second-level platform frame 1601. A second-level vacuum plate 1602 is installed inside the second-level platform frame 1601. The middle and lower cylinder fixing plate 1301 is fixedly connected to one of the transmission belts through a middle synchronous belt fastening plate; the inner orientation adjustment assembly includes an inner rail 1103 fixedly connected to the chassis 1, an inner cylinder 1403 fixing plate 1401 slidably connected to the inner rail 1103, and an inner cylinder 1403 vertically and fixedly connected to the inner cylinder 1403 fixing plate 1401. The piston rods of the inner cylinders 1403 on both sides are fixedly connected to a third-level platform frame 1701 through a buffer mounting sleeve 1703. A third-level vacuum plate 1702 is installed inside the third-level platform frame 1701. The inner cylinder 1403 fixing plate 1401 is fixedly connected to one of the transmission belts through an inner synchronous belt fastening plate 1402.

[0032] As Figures 2 to 5As shown, the driven transmission assembly includes a front rotating shaft 1002 rotatably connected to the front mounting groove 102 through a front bearing block 1001, an outer driven pulley, a middle driven pulley 1004, and an inner driven pulley 1005 mounted on the front rotating shaft 1002. The outer driven pulley, the middle driven pulley 1004, and the inner driven pulley 1005 are used for driving connection with a transmission belt. The driving transmission assembly includes a first-stage rear rotating shaft 902, a second-stage rear rotating shaft 903, and a third-stage rear rotating shaft 904 rotatably connected to the rear mounting groove 101 through a rear bearing block 901, a first-stage reduction motor 905, a second-stage reduction motor 906, and a third-stage reduction motor 907 fixedly connected to the chassis 1 and located below the first-stage rear rotating shaft 902, the second-stage rear rotating shaft 903, and the third-stage rear rotating shaft 904 respectively. The first-stage reduction motor 905, the second-stage reduction motor 906, and the third-stage reduction motor 907 are respectively in driving connection with the first-stage rear rotating shaft 902, the second-stage rear rotating shaft 903, and the third-stage rear rotating shaft 904. An outer main pulley 9021, a middle main pulley 9031, and an inner main pulley 9041 are respectively fixedly connected to the first-stage rear rotating shaft 902, the second-stage rear rotating shaft 903, and the third-stage rear rotating shaft 904. The outer main pulley 9021, the middle main pulley 9031, and the inner main pulley 9041 are used for driving connection with a transmission belt. Rotor shafts of the first-stage reduction motor 905, the second-stage reduction motor 906, and the third-stage reduction motor 907 are respectively coaxially fixedly connected with a first-stage driving pulley, a second-stage driving pulley, and a third-stage driving pulley. A first-stage driven pulley 9051 corresponding to the first-stage driving pulley, a second-stage driven pulley 9061 corresponding to the second-stage driving pulley, and a second-stage driven pulley 9061 corresponding to the second-stage driving pulley are respectively fixedly connected to the first-stage rear rotating shaft 902, the second-stage rear rotating shaft 903, and the third-stage rear rotating shaft 904. A short transmission belt is respectively used for driving connection between the first-stage driving pulley and the first-stage driven pulley 9051, between the second-stage driving pulley and the second-stage driven pulley 9061, and between the third-stage driving pulley and the third-stage driven pulley 9071.

[0033] When the vacuum hot plate machine is actually working, the operator only needs to place the leather upper on the mold, and then perform the mold closing action. Place the mold on the first-stage vacuum plate 1502. A negative pressure is generated in the first-stage vacuum plate 1502, so that the mold is firmly adsorbed on the first-stage vacuum plate 1502. Then, the first-stage reduction motor 905, the second-stage reduction motor 906, and the third-stage reduction motor 907 can work to drive the first-stage driving pulley, the second-stage driving pulley, and the third-stage driving pulley to rotate coaxially. The first-stage driving pulley, the second-stage driving pulley, and the third-stage driving pulley drive the first-stage driven pulley 9051, the second-stage driven pulley 9061, and the third-stage driven pulley 9071 to rotate through the short transmission belt. Since the first-stage driven pulley 9051, the second-stage driven pulley 9061, and the third-stage driven pulley 9071 are respectively fixed on the first-stage rear rotating shaft 902, the second-stage rear rotating shaft 903, and the third-stage rear rotating shaft 904, the first-stage rear rotating shaft 902, the second-stage rear rotating shaft 903, and the third-stage rear rotating shaft 904 will follow the first-stage driven pulley 9051, the second-stage driven pulley 9061, and the third-stage driven pulley 9071 to rotate. When the first-stage rear rotating shaft 902, the second-stage rear rotating shaft 903, and the third-stage rear rotating shaft 904 rotate, they will drive the outer main pulley 9021, the middle main pulley 9031, and the inner main pulley 9041 to rotate coaxially. The outer main pulley 9021, the middle main pulley 9031, and the inner main pulley 9041 will cooperate with the outer driven pulley, the middle driven pulley 1004, and the inner driven pulley 1005 to drive the three groups of transmission belts to rotate. Since the transmission belt is clamped between the outer cylinder 1203 fixing plate 1201 and the outer synchronous belt fastening plate 1202, between the middle and lower cylinder fixing plate 1301 and the middle synchronous belt fastening plate, and between the inner cylinder 1403 fixing plate 1401 and the inner synchronous belt fastening plate 1402, the rotation of the transmission belt will drive the outer synchronous belt fastening plate 1202, the middle and lower cylinder fixing plate 1301, and the inner cylinder 1403 fixing plate 1401 to displace, thereby completing the position adjustment of the outer position adjustment component, the middle position adjustment component, and the inner position adjustment component in the length direction of the support frame group. As a result, the first-stage vacuum plate 1502 rotates in a cycle among the waiting work station, the hot pressing station, and the cold pressing station, and the second-stage vacuum plate 1602 and the third-stage vacuum plate 1702 follow the rotation sequence of the first-stage vacuum plate 1502 in turn. In this way, the mold clamped with the leather upper can first go to the hot pressing station. At the hot pressing station, the hot pressing cylinder 5 drives the hot pressing horizontal adjustment plate 501, the hot pressing pressure plate 502, and the heating plate 503 to displace downward, so that the heating plate 503 and the lower temperature adjustment plate 806 at the hot pressing station together quickly heat the mold, and then complete the hot pressing action. Then, at the cold pressing station, the cold pressing cylinder 4 drives the cold pressing horizontal adjustment plate 401, the cold pressing pressure plate 402, and the cold pressing plate 403 to displace downward,The cold pressing plate 403 cooperates with the lower temperature regulating plate 806 at the cold pressing station to clamp the mold and conduct heat exchange, so that the mold can be cooled down in a short time, thereby avoiding scalding of subsequent operators when touching the mold due to excessive mold temperature, and also avoiding marks on the leather upper when the mold remains at a high temperature and the leather upper is placed again.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vacuum hot plate machine, characterized in that, The invention comprises a base frame (1), a gantry frame (3) fixedly connected to the base frame (1), a hot pressing assembly and a cold pressing assembly that can be raised and lowered on the gantry frame (3), a support frame group fixedly connected to the base frame (1) and located below the hot pressing assembly and the cold pressing assembly, and a primary vacuum plate (1502), a secondary vacuum plate (1602) and a tertiary vacuum plate (1702) that can be raised and lowered and displaced on the support frame group. The support frame group has a waiting station, a cold pressing station facing the cold pressing assembly, and a hot pressing station facing the hot pressing assembly. In an initial state, the primary vacuum plate (1502), the secondary vacuum plate (1602) and the tertiary vacuum plate (1702) correspond to the waiting station, cold pressing station and hot pressing station respectively. In the working state, the first-level vacuum plate (1502) circulates according to the waiting station, hot pressing station and cold pressing station, and the second-level vacuum plate (1602) and the third-level vacuum plate (1702) follow the first-level vacuum plate (1502) in the order of circulation. The first-level vacuum plate (1502), the second-level vacuum plate (1602) and the third-level vacuum plate (1702) are used to generate negative pressure on the placed molds. The hot pressing component performs instantaneous hot pressurization on the molds on the hot pressing station, and the cold pressing component cools down and pressurizes the molds on the cold pressing station.

2. The vacuum hot plate machine according to claim 1, wherein The support frame group comprises a front support frame (6), a middle support frame (7) facing the cold pressing assembly, and a rear support frame (8) facing the hot pressing assembly, which are arranged in sequence; the middle support frame (7) and the rear support frame (8) are both provided with a lower horizontal plate (804) capable of buffering lifting and lowering, a heat insulation plate (805) fixedly connected to the top surface of the lower horizontal plate (804), and a lower temperature regulating plate (806) fixedly connected to the top surface of the heat insulation plate (805); the lower temperature regulating plate (806) located above the rear support frame (8) is used for heating, and the lower temperature regulating plate (806) located above the middle support frame (7) is used for cooling.

3. The vacuum hot plate machine according to claim 2, characterized in that, The outer rings of the middle support frame (7) and the rear support frame (8) are fixedly connected to a mounting seat (801), a linear bearing (802) is fixedly connected to the mounting seat (801), a lower horizontal column (803) is slidably connected inside the linear bearing (802), an upper end of the lower horizontal column (803) is fixedly connected to the bottom surface of the lower horizontal plate (804), and an outer ring of the lower horizontal column (803) is provided with a compression spring that contacts the bottom surface of the lower horizontal plate (804) and the linear bearing (802).

4. A vacuum hot plate machine according to claim 1, characterized in that, The cold pressing assembly includes a cold pressing cylinder (4) fixedly connected to the gantry (3), a cold pressing horizontal adjustment plate (401) fixedly connected to the piston rod in the cold pressing cylinder (4), a cold pressing pressure plate (402) fixedly connected below the cold pressing horizontal adjustment plate (401), and a cold pressing plate (403) fixedly connected to the bottom surface of the cold pressing pressure plate (402). The cold pressing plate (403) is used to communicate with the refrigerant. The hot pressing assembly includes a hot pressing cylinder (5) fixedly connected to the gantry (3), a hot pressing horizontal adjustment plate (501) fixedly connected to the piston rod in the hot pressing cylinder (5), a hot pressing pressure plate (502) fixedly connected below the hot pressing horizontal adjustment plate (501), and a hot pressing plate fixedly connected to the bottom surface of the hot pressing pressure plate (502). The hot pressing plate is used for heat exchange with the heat source inside or entering it.

5. A vacuum hot plate machine according to claim 1, characterized in that, An outer orientation adjustment assembly, a middle orientation adjustment assembly, and an inner orientation adjustment assembly are arranged on the chassis (1) on both sides of the support frame group and arranged in sequence from outside to inside. The first-stage vacuum plate (1502), the second-stage vacuum plate (1602), and the third-stage vacuum plate (1702) are respectively installed on the movable ends of the outer orientation adjustment assembly, the middle orientation adjustment assembly, and the inner orientation adjustment assembly to achieve lifting in the height direction and cyclic rotation of the station sequence. Front mounting grooves (102) and rear mounting grooves (101) are respectively formed at the front and rear ends of the chassis (1). A driving transmission assembly and a driven transmission assembly that are in transmission connection with each other are respectively arranged in the rear mounting groove (101) and the front mounting groove (102). The driving transmission assembly and the driven transmission assembly are mutually driven by a plurality of transmission belts to guide the outer orientation adjustment assembly, the middle orientation adjustment assembly, and the inner orientation adjustment assembly to achieve cyclic rotation of the station sequence.

6. The vacuum hot plate machine according to claim 5, characterized in that, The outer orientation adjustment assembly includes an outer rail (1101) fixedly connected to the chassis (1), an outer cylinder (1203) fixing plate (1201) slidably connected to the outer rail (1101), and an outer cylinder (1203) vertically fixedly connected to the outer cylinder (1203) fixing plate (1201). The piston rods of the outer cylinders (1203) on both sides are commonly fixedly connected to a first-stage platform frame (1501). The first-stage vacuum plate (1502) is installed in the first-stage platform frame (1501). The outer cylinder (1203) fixing plate (1201) is fixedly connected to one of the transmission belts through an outer synchronous belt fastening plate (1202).

7. A vacuum hot plate machine according to claim 5, characterized in that, The middle azimuth adjustment component includes a middle rail (1102) fixedly connected to the chassis (1), a first rail (1305) and a second rail (1306) located on both sides of the middle rail (1102), a middle lower cylinder fixing plate (1301) slidably connected to the middle rail (1102) and located between the first rail (1305) and the second rail (1306), a first-stage middle cylinder (1302) vertically fixedly connected to the middle lower cylinder fixing plate (1301), a middle upper cylinder fixing plate (1303) fixedly connected to the piston rod of the middle lower cylinder and located between the first rail (1305) and the second rail (1306), and a second-stage middle cylinder (1304) vertically fixedly connected to the middle upper cylinder fixing plate (1303). The piston rods of the second-stage middle cylinders (1304) on both sides are commonly fixedly connected with a second-stage platform frame (1601). The second-stage vacuum plate (1602) is installed in the second-stage platform frame (1601). The middle lower cylinder fixing plate (1301) is fixedly connected to one of the transmission belts through a middle synchronous belt fastening plate.

8. A vacuum hot plate machine according to claim 5, characterized in that, The inner azimuth adjustment component includes an inner rail (1103) fixedly connected to the chassis (1), an inner cylinder (1403) fixing plate (1401) slidably connected to the inner rail (1103), and an inner cylinder (1403) vertically fixedly connected to the inner cylinder (1403) fixing plate (1401). The piston rods of the inner cylinders (1403) on both sides are fixedly connected with a third-stage platform frame (1701) through a buffer mounting sleeve (1703). The third-stage vacuum plate (1702) is installed in the third-stage platform frame (1701). The inner cylinder (1403) fixing plate (1401) is fixedly connected to one of the transmission belts through an inner synchronous belt fastening plate (1402).

9. The vacuum hot plate machine according to claim 5, characterized in that, The driven transmission component includes a front rotating shaft (1002) rotatably connected to the front mounting groove (102) through a front bearing seat (1001), an outer driven belt pulley, a middle driven belt pulley (1004), and an inner driven belt pulley (1005) installed on the front rotating shaft (1002). The outer driven belt pulley, the middle driven belt pulley (1004), and the inner driven belt pulley (1005) are used for driving connection with the transmission belt.

10. The vacuum hot plate machine according to claim 9, characterized in that, The active transmission assembly comprises a primary rear shaft (902), a secondary rear shaft (903) and a tertiary rear shaft (904) which are rotatably connected to the rear mounting groove (101) via a rear bearing seat (901), a primary reduction motor (905), a secondary reduction motor (906) and a tertiary reduction motor (907) which are fixedly connected to the base frame (1) and are respectively located below the primary rear shaft (902), the secondary rear shaft (903) and the tertiary rear shaft (904), wherein the primary reduction motor (905) and the secondary reduction motor (906) are , and a three-stage reduction motor (907) are respectively connected to the primary rear shaft (902), the secondary rear shaft (903) and the tertiary rear shaft (904) in transmission connection; the primary rear shaft (902), the secondary rear shaft (903) and the tertiary rear shaft (904) are respectively fixedly connected with an outer main pulley (9021), a middle main pulley (9031) and an inner main pulley (9041); the outer main pulley (9021), the middle main pulley (9031) and the inner main pulley (9041) are used for being connected to the transmission belt in transmission connection.

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