An intelligent leather vacuum dryer with fast overall screen changing equipment

Abstract

The present invention relates to a fast integral screen changing device for an intelligent leather vacuum dryer, comprising a detachable mechanism and a screen changing mechanism, the detachable mechanism comprising a bottom frame, a rubber plate and a flat screen, the bottom frame is sleeved on the bottom of a workbench and is detachably connected to the side wall of the workbench through a first bolt assembly, the rubber plate and the rubber frame are mounted on the bottom surface of the bottom frame, the flat screen is detachably mounted on the bottom surface of the rubber plate and the screen changing mechanism comprises a frame, a flip bracket, a rotating head and a connecting frame, the flip bracket is movably mounted on the frame and is driven up and down by a lifting drive assembly, the rotating head is rotatably mounted on a side of the flip bracket away from the frame and is driven to rotate by a rotating drive member, the connecting frame is mounted on the rotating head, and the connecting frame is detachably connected to the bottom frame removed from the side wall of the workbench through a first bolt assembly; the present invention facilitates the replacement of the flat screen and reduces the labor intensity of operators disassembling and assembling the flat screen.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum dryers, and in particular to a quick overall screen changing device for an intelligent leather vacuum dryer. Background Art

[0002] At present, tanneries at home and abroad generally use platen vacuum dryers for drying. Under vacuum, the platen vacuum dryer uses a heat source to supply enough heat to the leather through conduction heating, so that the water evaporates and boils, accelerating the vaporization rate. At the same time, vacuuming quickly extracts the vaporized steam and forms a negative pressure state around the leather, forming a large humidity gradient between the inner and outer layers of the leather and between the surface and the surrounding medium, accelerating the vaporization rate and achieving the purpose of rapid drying. However, during the drying process, the leather area will shrink dramatically, greatly affecting the leather yield.

[0003] A stretching vacuum dryer provided by the Chinese invention patent with publication number CN206308378U comprises a plurality of stacked worktables, the lower surface of the worktable has a sealing frame arranged along the lower edge of the worktable, at least one flat net laid in the sealing frame is installed on the lower surface of the worktable, the flat net is an elastic flat net, the sealing frame has a plurality of horizontal stretching mechanisms distributed around the elastic flat net, the horizontal stretching mechanism is connected and fixed to the edge of the elastic flat net, and the elastic flat net is driven by the horizontal stretching mechanism to stretch or shrink in the horizontal direction. During the vacuum drying process, the leather is stretched by the elastic flat net pressing the leather, which indirectly promotes the stretching of the leather, thereby avoiding or reducing the shrinkage of the leather during the drying process, and achieving the purpose of increasing the leather yield.

[0004] However, the above vacuum dryer still has some problems. During the drying process, the flat screen is easily damaged due to repeated stretching and contraction actions, and needs to be replaced frequently. The above flat screen is installed on the bottom surface of the sealant frame, and the sealant frame is fixedly connected to the lower surface of the workbench. When replacing the flat screen, the workbench needs to be raised, and the operator needs to tilt his head upward and raise his arms to disassemble the flat screen. After the flat screen is disassembled, the above actions are also required to install the new flat screen on the sealant frame. Regardless of the disassembly or installation operation, multiple operators are required to lift the flat screen, which is labor-intensive and very inconvenient to replace the flat screen.

[0005] Therefore, the present invention proposes an intelligent leather vacuum dryer fast overall screen changing device to solve the above problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a quick overall screen changing device for an intelligent leather vacuum dryer, which is convenient for replacing a flat screen and reduces the labor intensity of operators in disassembling and installing the flat screen.

[0007] In order to solve the above technical problems, the technical solution of the present invention is: a fast overall screen changing device for an intelligent leather vacuum dryer, the vacuum dryer includes a workbench, the workbench is driven up and down by a driving mechanism, and its innovation lies in: the screen changing device includes a detachable mechanism and a screen changing mechanism;

[0008] The detachable mechanism comprises a bottom frame, a rubber plate frame and a flat net, the bottom frame is sleeved on the bottom of the workbench and is detachably connected to the side wall of the workbench through a first bolt assembly, the rubber plate frame is mounted on the bottom surface of the bottom frame, and the flat net is detachably mounted on the bottom surface of the rubber plate frame through a lower pressure strip and a second bolt assembly;

[0009] The screen changing mechanism includes a frame, a flip bracket, a rotating head and a connecting frame. The flip bracket is movably mounted on the frame and driven up and down by a lifting drive assembly. The central axis of the rotating head is horizontally rotatably mounted on the flip bracket on a side away from the frame and driven to rotate by a rotating drive member. The connecting frame is mounted on the rotating head and is detachably connected to the bottom frame removed from the side wall of the worktable through a first bolt assembly.

[0010] Furthermore, a side pressure strip is installed on the outer side of the bottom frame, the top of the side pressure strip is connected to the bottom frame, and the bottom of the side pressure strip is connected to the rubber plate and rubber frame.

[0011] Further, the lifting drive assembly includes a lifting bracket and a lifting drive member, the lifting bracket is movably mounted on the frame through a pulley assembly, and is driven to move up and down by the lifting drive member, the pulley assembly has two, which are rotatably mounted on both sides of the lifting bracket, and the pulley assembly includes a horizontal limit pulley group and a longitudinal limit pulley group;

[0012] Two guide rail grooves corresponding to the horizontal limit pulley groups of the two pulley assemblies are formed on the side wall of the frame. The horizontal limit pulley group is rotatably arranged in the corresponding guide rail grooves. The horizontal limit pulley group includes a radial limit pulley and an axial limit pulley. The central axis of the radial limit pulley is perpendicular to the central axis of the axial limit pulley.

[0013] Two pulley guard plates corresponding to the longitudinal limit pulley groups of the two pulley assemblies are installed on the outside of the frame. Each pulley guard plate is provided with a longitudinal movement limit groove. The longitudinal limit pulley group is rollingly arranged in the corresponding longitudinal movement limit groove. The longitudinal limit pulley group includes two longitudinal limit pulleys. The central axis of the longitudinal limit pulley is parallel to the central axis of the radial limit pulley.

[0014] Furthermore, the bottom frame is composed of an angle plate frame and a square rod bracket. The angle plate frame is arranged around the square rod bracket and a mounting groove is formed above the square rod bracket. The connecting frame is arranged in the middle of the mounting groove. The width direction of the connecting frame is the same as that of the square rod bracket. The four corners of the connecting frame are connected to the angle plate frame by a first bolt assembly.

[0015] Furthermore, a support leg is horizontally installed at the bottom of the frame, and four casters distributed in a U-shaped shape are installed at the bottom of the support leg.

[0016] The advantages of the present invention are:

[0017] (1) The bottom frame of the detachable mechanism in the present invention is connected to the side wall of the workbench through the first bolt assembly. The operator can separate the detachable mechanism from the workbench by removing the first bolt assembly from the side. Then, the screen changing mechanism drives the detachable mechanism away from the vacuum dryer and rotates the detachable mechanism to a suitable angle, which is convenient for the operator to disassemble and assemble the flat screen. There is no need to lift the flat screen manually, which effectively reduces the labor intensity of the operator in disassembling and assembling the flat screen and facilitates the replacement of the flat screen.

[0018] (2) The present invention can not only strengthen the connection between the rubber plate and the rubber frame and the bottom frame by providing the side pressure strips, but also limit the rubber plate and the rubber frame to avoid excessive deformation.

[0019] (3) In the present invention, the radial limiting pulley is used to limit the lifting bracket radially, the axial limiting pulley is used to limit the lifting bracket axially, and the longitudinal limiting pulley is used to limit the displacement of the lifting bracket when it moves up and down, thereby effectively improving the movement stability of the lifting bracket.

[0020] (4) In the present invention, a support leg is horizontally installed at the bottom of the frame, and four casters distributed in a U-shaped shape are installed at the bottom of the support leg to facilitate the movement of the screen changing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a structural schematic diagram of the rapid overall screen changing device of the intelligent leather vacuum dryer of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the detachable mechanism of the present invention.

[0024] Figure 3 It is a schematic diagram of the connection between the detachable mechanism and the workbench plate of the present invention.

[0025] Figure 4 It is a partial cross-sectional view of the detachable mechanism and the workbench of the present invention.

[0026] Figure 5 It is a structural schematic diagram of the screen changing mechanism of the present invention.

[0027] Figure 6 It is a structural schematic diagram of the rack of the present invention.

[0028] Figure 7 It is a schematic structural diagram of the lifting bracket of the present invention.

[0029] Figure 8 It is a schematic diagram of the connection between the detachable mechanism and the screen changing mechanism of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1-8 The shown embodiment is a fast overall screen changing device for an intelligent leather vacuum dryer. The vacuum dryer 1 comprises a plurality of stacked work tables 11. Each work table 11 is driven up and down by a driving mechanism. The driving mechanism is driven by an oil cylinder. The screen changing device 2 comprises a detachable mechanism 21 and a screen changing mechanism 22.

[0033] The detachable mechanism 21 includes a bottom frame 2101, a rubber plate and rubber frame 2102 and a flat net 2103. The bottom frame 2101 is composed of an angle plate frame and a square rod bracket. The angle plate frame is arranged around the square rod bracket and a mounting groove is formed above the square rod bracket. When the detachable mechanism 21 is connected to the workbench 11, the workbench 11 is set in the mounting groove, so that the bottom frame 2101 is sleeved on the bottom of the workbench 11 and is detachably connected to the side wall of the workbench 11 through a first bolt assembly 2104. The first bolt assembly 2104 is composed of a plurality of first bolts. A first through hole for the first bolt to pass through is opened on the angle plate frame of the bottom frame 2101, and a first threaded hole matching the first bolt is opened on the outer wall of the workbench 11. The first bolt passes through the first through hole and is threadedly connected in the first threaded hole to realize the connection between the detachable mechanism 21 and the workbench 11. The rubber sheet and rubber frame 2102 is installed on the bottom surface of the bottom frame 2101. The side pressure strip 2105 is installed on the outside of the angle plate frame of the bottom frame 2101. The top of the side pressure strip 2105 is connected to the angle plate frame of the bottom frame 2101. The bottom of the side pressure strip 2105 is connected to the rubber sheet and rubber frame 2102. The setting of the side pressure strip 2105 can not only strengthen the connection between the rubber sheet and rubber frame 2102 and the bottom frame 2101, but also limit the rubber sheet and rubber frame 2102 to avoid excessive deformation. The flat net 2103 is detachably installed on the bottom surface of the rubber sheet and rubber frame 2102 through the lower pressure strip 2106 and the second bolt assembly. The edge of the flat net 2103 is connected to the lower pressure strip 2106, and the lower pressure strip 2106 is connected to the rubber sheet and rubber frame 2102 through the second bolt assembly.

[0034] The screen changing mechanism 22 includes a frame 2201, a flip bracket 2202, a rotating head 2203 and a connecting frame 2204. The frame 2201 is a rectangular frame structure formed by two vertical bars and two horizontal bars. The frame 2201 is vertically arranged, and a support leg 2205 is horizontally installed at the bottom of the frame 2201. Four casters 2206 distributed in a U-shaped shape are installed at the bottom of the support leg 2205 to facilitate the movement of the screen changing mechanism 22.

[0035] The flip bracket 2202 is movably mounted on the frame 2201 and driven to move up and down by a lifting drive assembly. The lifting drive assembly includes a lifting bracket 2207 and a lifting drive member 2208. The lifting bracket 2207 is movably mounted on the frame through a pulley assembly and driven to move up and down by the lifting drive member 2208. One side of the flip bracket 2202 is fixedly connected to the lifting bracket 2207. The lifting drive member 2208 is driven by a cylinder. The lifting drive member 2208 is mounted on the frame 2201, and the telescopic end of the lifting drive member 2208 is connected to the lifting bracket 2207.

[0036] Among them, there are two pulley assemblies, which are rotatably installed on both sides of the lifting bracket 2207 respectively. The pulley assembly includes a horizontal limit pulley group and a longitudinal limit pulley group. Two guide rail grooves 2209 corresponding to the horizontal limit pulley groups of the two pulley assemblies are opened on the side wall of the frame 2201. The horizontal limit pulley group is rollingly arranged in the corresponding guide rail groove 2209. The horizontal limit pulley group includes two radial limit pulleys 2210 and two axial limit pulleys 2211. The central axis of the radial limit pulley 2210 is perpendicular to the central axis of the axial limit pulley 2211. The radial limit pulley 2210 and the axial limit pulley 2211 are arranged in the guide rail groove 2209. The rolling surface of the radial limit pulley 2210 is in rolling contact with the side of the guide rail groove 2209, which is conducive to the lifting. The bracket is radially limited, and the rolling surface of the axial limiting pulley 2211 is in rolling contact with the bottom surface of the guide groove 2209 to limit the axial position of the lifting bracket; two pulley guards 2212 corresponding to the longitudinal limiting pulley groups of the two pulley assemblies are installed on the outer side of the frame 2201, and each pulley guard 2212 is provided with a longitudinal movement limiting groove 2213, and the longitudinal limiting pulley group is rollingly arranged in the corresponding longitudinal movement limiting groove 2213, and the longitudinal limiting pulley group includes two longitudinal limiting pulleys 2214, and the central axis of the longitudinal limiting pulley 2214 is parallel to the central axis of the radial limiting pulley 2210. The longitudinal limiting pulley 2214 can not only strengthen the radial limitation of the lifting bracket 2207, but also limit the displacement of the lifting bracket 2207 moving up and down.

[0037] The rotating head 2203 is horizontally rotatably mounted on the flip bracket 2202 on the side away from the frame 2201 through the central axis of the rotating shaft, and is driven to rotate by the rotating driving member 2215. The rotating shaft is rotatably mounted on the flip bracket 2202, and the rotating head 2203 is fixedly sleeved on the outer side of the rotating shaft. The rotating driving member 2215 is driven by a motor. The rotating driving member 2215 is mounted on the side wall of the flip bracket 2202, and the output end of the rotating driving member 2215 is connected to the rotating shaft through a commutator. The connecting frame 2204 is composed of several The connecting frame 2204 is composed of horizontal bars and vertical bars. The rotating head 2203 is connected to the middle of the connecting frame 2204 and rotates with the rotating head 2203. The connecting frame 2204 is detachably connected to the bottom frame 2101 removed from the side wall of the workbench 11 through the first bolt assembly 2104. The connecting frame 2204 is set in the middle of the installation groove. The width direction of the connecting frame 2204 is the same as that of the square bar bracket. The four corners of the connecting frame 2204 are connected to the corner plate frame of the bottom frame 2101 through the first bolt assembly 2201.

[0038] Working principle: when the flat screen needs to be replaced, the operator first removes the first bolt assemblies 2104 one by one to separate the detachable mechanism from the workbench, the workbench 11 rises away from the detachable mechanism, the screen changing mechanism 22 moves to the vacuum dryer 1, and the connecting frame 2204 moves downward to the detachable mechanism. The operator connects the connecting frame 2204 to the bottom frame 2104 through the first bolt assembly, and the connecting frame 2204 moves upward to drive the detachable mechanism 21 away from the workbench below, and moves the screen changing mechanism to move the detachable mechanism 21 away from the vacuum dryer 1. The rotating head 2203 drives the detachable mechanism 21 to rotate through the connecting frame 2204, so that the flat screen 2103 installed on the bottom surface of the rubber plate frame 2102 is tilted upward. The operator removes the flat screen 2103, replaces the new flat screen, and repeats the above operation to install the detachable mechanism with the new flat screen on the corresponding workbench to complete the flat screen replacement.

[0039] The present invention provides an intelligent leather vacuum dryer fast integral screen changing device. During the entire flat screen replacement operation, since the bottom frame of the detachable mechanism is connected to the side wall of the work table through the first bolt assembly, the operator can separate the detachable mechanism from the work table by removing the first bolt assembly from the side. Then, the screen changing mechanism drives the detachable mechanism away from the vacuum dryer and rotates the detachable mechanism to a suitable angle, which is convenient for the operator to disassemble and assemble the flat screen and does not require manual lifting of the flat screen, effectively reducing the labor intensity of the operator in disassembling and assembling the flat screen and facilitating the replacement of the flat screen.

[0040] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A quick overall screen changing device for an intelligent leather vacuum dryer, the vacuum dryer comprising a worktable, the worktable being driven up and down by a driving mechanism, characterized in that: The screen changing device comprises a detachable mechanism and a screen changing mechanism; The detachable mechanism comprises a bottom frame, a rubber plate frame and a flat net, the bottom frame is sleeved on the bottom of the workbench and is detachably connected to the side wall of the workbench through a first bolt assembly, the rubber plate frame is mounted on the bottom surface of the bottom frame, and the flat net is detachably mounted on the bottom surface of the rubber plate frame through a lower pressure strip and a second bolt assembly; The screen changing mechanism comprises a frame, a flip bracket, a rotating head and a connecting frame, wherein the flip bracket is movably mounted on the frame and driven to move up and down by a lifting drive assembly, the central axis of the rotating head is horizontally rotatably mounted on a side of the flip bracket away from the frame and driven to rotate by a rotating drive member, the connecting frame is mounted on the rotating head, and the connecting frame is detachably connected to a bottom frame detached from a side wall of a worktable plate by a first bolt assembly; The lifting drive assembly includes a lifting bracket and a lifting drive member. The lifting bracket is movably mounted on the frame through a pulley assembly and is driven to move up and down by the lifting drive member. The pulley assembly has two pulley assemblies, which are rotatably mounted on both sides of the lifting bracket. The pulley assembly includes a horizontal limit pulley group and a longitudinal limit pulley group. Two guide rail grooves corresponding to the horizontal limit pulley groups of the two pulley assemblies are formed on the side wall of the frame. The horizontal limit pulley group is rotatably arranged in the corresponding guide rail grooves. The horizontal limit pulley group includes a radial limit pulley and an axial limit pulley. The central axis of the radial limit pulley is perpendicular to the central axis of the axial limit pulley. Two pulley guard plates corresponding to the longitudinal limit pulley groups of the two pulley assemblies are installed on the outside of the frame. Each pulley guard plate is provided with a longitudinal movement limit groove. The longitudinal limit pulley group is rollingly arranged in the corresponding longitudinal movement limit groove. The longitudinal limit pulley group includes two longitudinal limit pulleys. The central axis of the longitudinal limit pulley is parallel to the central axis of the radial limit pulley.

2. The intelligent leather vacuum dryer fast overall screen changing device according to claim 1 is characterized by: A side press strip is installed on the outer side of the bottom frame, the top of the side press strip is connected to the bottom frame, and the bottom of the side press strip is connected to the rubber plate and rubber frame.

3. The intelligent leather vacuum dryer fast overall screen changing device according to claim 1, characterized in that: The bottom frame is composed of an angle plate frame and a square rod bracket. The angle plate frame is arranged around the square rod bracket and a mounting groove is formed above the square rod bracket. The connecting frame is arranged in the middle of the mounting groove. The width direction of the connecting frame is the same as that of the square rod bracket. The four corners of the connecting frame are connected to the angle plate frame by a first bolt assembly.

4. The intelligent leather vacuum dryer fast overall screen changing device according to claim 1, characterized in that: The bottom of the frame is horizontally provided with supporting legs, and the bottom of the supporting legs is provided with four casters distributed in a square shape.

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