Automatic thread removing device for zinc alloy

Abstract

The invention discloses an automatic thread removing device for zinc alloy. The device comprises a driving part, a transmission part, a first rotating wheel, at least one second rotating wheel and at least one fixing base. One end of the transmission part is in transmission connection with the power output end of the driving part, and the other end is connected with the first rotating wheel; a rotating roller is arranged on the first rotating wheel and meshed with the second rotating wheel, a center roller is arranged on the second rotating wheel and rotationally connected to the fixing base, and a threaded section is arranged at the end, away from the second rotating wheel, of the center roller. According to the scheme, the first rotating wheel is driven to rotate through the driving part and the transmission part, the first rotating wheel synchronously drives the rotating roller to rotate, the rotating roller drives the corresponding second rotating wheel to rotate, the center roller synchronously rotates when the second rotating wheel rotates, and at the moment, the threaded section on the center roller synchronously rotates; and when the threaded section rotates, the zinc alloy nut can be quickly demoulded.

Description

Technical Field

[0001] This application relates to the field of thread-unscrewing devices, and in particular to an automatic thread-unscrewing device for zinc alloys. Background Technology

[0002] Zinc alloys are widely used in the manufacture of various fasteners and structural components due to their good casting properties, moderate mechanical strength, excellent corrosion resistance, and low cost. Among them, zinc alloy nuts with internal threads are a typical example. These parts are usually produced by die casting or injection molding. Molten zinc alloy wraps around a pre-set threaded core in a mold cavity, and after cooling and solidification, a blank with internal threads is formed.

[0003] However, in the demolding process after molding, how to smoothly and without damage separate the zinc alloy nut from the threaded core has always been a technical challenge in production. Summary of the Invention

[0004] In view of the above problems, this application provides an automatic unscrewing device for zinc alloy, which can solve the problem of how to smoothly and without damage separate zinc alloy nuts from threaded cores.

[0005] To solve the above-mentioned technical problems, this application proposes an automatic unscrewing device for zinc alloy, comprising: a driving component, a transmission component, a first rotating wheel, at least one second rotating wheel, and at least one fixed base; One end of the transmission component is connected to the power output end of the drive component, and the other end is connected to the first rotating wheel; The first rotating wheel is provided with a rotating roller, which meshes with the second rotating wheel. The second rotating wheel is provided with a central roller, which is rotatably connected to the fixed base. The end of the central roller away from the second rotating wheel is provided with a threaded section, and the thread specification of the threaded section is adapted to the internal thread specification of the zinc alloy nut to be dethreaded.

[0006] In some embodiments, the surface of the rotating roller is provided with a meshing groove, and the inner wall of the meshing groove is provided with a wear-resistant coating.

[0007] In some embodiments, the crest height of the thread segment gradually decreases or the mean diameter of the thread gradually decreases along the direction from the root to the end of the thread segment.

[0008] In some embodiments, a cooling and lubrication system is also included; The cooling and lubrication system includes an internal cooling channel and an external spray unit; the internal cooling channel is located inside the center roller, one end of the cooling channel is connected to an external coolant source, and the other end of the cooling channel leads to the threaded section area; The external spraying unit is located outside the threaded section and is configured to spray a release agent onto the interface between the threaded section and the zinc alloy nut before or during demolding.

[0009] In some embodiments, a nut receiving and guiding mechanism is also included; The nut receiving and guiding mechanism includes an inclined guide groove and a collection box. The inlet end of the inclined guide groove is located below the end of the threaded section, and the inclined guide groove is connected to the collection box. The screwed-out zinc alloy nut falls into the collection box along the inclined guide groove under the action of gravity.

[0010] In some embodiments, a rotary encoder and a programmable logic controller are also included; The rotary encoder is mounted on the end of the center roller and is configured to detect the rotation angle or number of turns of the threaded section in real time; the programmable logic controller is electrically connected to the rotary encoder and is configured to receive the feedback signal from the rotary encoder.

[0011] In some embodiments, the first rotating wheel is detachably connected to the rotating roller, the diameter of the rotating roller is adjustable, and the diameter of the second rotating wheel is adjustable.

[0012] In some embodiments, the first rotating wheel and the second rotating wheel are made of high-strength cast iron or stainless steel, and their surfaces are carburized and quenched to a surface hardness of not less than HRC50; the rotating roller is made of bearing steel, and its surface is quenched and tempered to a hardness of not less than HRC60.

[0013] In some embodiments, the bottom of the mounting base is provided with a shock-absorbing pad.

[0014] In some embodiments, the system further includes a controller, a speed sensor, and a torque sensor; The speed sensor is disposed on the rotating roller and is configured to detect the speed of the first rotating wheel; The torque sensor is mounted on the center roller and is configured to detect the torque value during the unscrewing process; The controller is electrically connected to the drive unit, the speed sensor, and the torque sensor respectively. When the torque value exceeds a preset threshold, the controller controls the drive unit to reduce the speed. When the torque value is lower than the preset threshold, the controller controls the drive unit to increase the speed. The controller is also equipped with a touch screen for displaying operating parameters and fault information.

[0015] The above-mentioned solution provided by the present invention: The first rotating wheel is driven to rotate by the drive and transmission components. The first rotating wheel drives the rotating roller to rotate synchronously. The rotating roller drives the corresponding second rotating wheel to rotate. When the second rotating wheel rotates, the center roller also rotates synchronously. At this time, the threaded section on the center roller also rotates synchronously. When the threaded section rotates, the zinc alloy nut can be quickly demolded.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the structure of an automatic unscrewing device for zinc alloy provided in some embodiments of this application; Figure 2 A schematic diagram of an automatic unscrewing device for zinc alloy provided in some embodiments of this application from another perspective. Detailed Implementation

[0018] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0020] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0023] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0024] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0025] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0026] According to some embodiments of this application, such as Figure 1 and combined Figure 2As shown, this application provides an automatic descrewing device for zinc alloy, including: a driving component 10, a transmission component 11, a first rotating wheel 12, at least one second rotating wheel 13, and at least one fixed base 14; wherein, one end of the transmission component 11 is connected to the power output end of the driving component 10, and the other end is connected to the first rotating wheel 12; a rotating roller 121 is provided on the first rotating wheel 12, the rotating roller 121 meshes with the second rotating wheel 13, a central roller 131 is provided on the second rotating wheel 13, the central roller 131 is rotatably connected to the fixed base 14, and a threaded section 132 is provided at the end of the central roller 131 away from the second rotating wheel 13, the thread specification of the threaded section 132 being adapted to the internal thread specification of the zinc alloy nut to be descrewed.

[0027] In use, the first rotating wheel is driven to rotate by the drive and transmission components. The first rotating wheel drives the rotating roller to rotate synchronously. The rotating roller drives the corresponding second rotating wheel to rotate. When the second rotating wheel rotates, the center roller also rotates synchronously. At this time, the threaded section on the center roller also rotates synchronously. When the threaded section rotates, the zinc alloy nut can be quickly demolded.

[0028] According to some embodiments of this application, the surface of the rotating roller 121 is provided with a meshing groove, and the inner wall of the meshing groove is provided with a wear-resistant coating. In this way, the wear resistance of the rotating roller 121 can be improved.

[0029] According to some embodiments of this application, the crest height of the thread segment 132 gradually decreases or the thread pitch diameter gradually decreases along the direction from the root to the end of the thread segment 132.

[0030] This provides a gradually releasing guide space for the solidifying and shrinking zinc alloy nut, effectively reducing the initial demolding resistance and guiding the nut to rotate smoothly along the axial direction, avoiding the thread pair from jamming or the thread profile from being sheared and damaged due to excessive shrinkage clamping force of the zinc alloy.

[0031] According to some embodiments of this application, a cooling and lubrication system is also included; the cooling and lubrication system includes an internal cooling channel and an external spraying unit; the internal cooling channel is opened inside the center roller 131, one end of the cooling channel is connected to an external coolant source, and the other end of the cooling channel leads to the threaded section 132 area; the external spraying unit is disposed outside the threaded section 132 and is configured to spray a release agent onto the interface between the threaded section 132 and the zinc alloy nut before or during demolding.

[0032] In this way, the temperature during demolding can be effectively reduced through the interaction between the cooling channel and the external spray unit.

[0033] According to some embodiments of this application, a nut receiving and guiding mechanism is also included, wherein the nut receiving and guiding mechanism includes an inclined guide groove and a collection box, the inlet end of the inclined guide groove is located below the end of the threaded section 132, and the inclined guide groove is connected to the collection box, and the screwed-out zinc alloy nut falls into the collection box along the inclined guide groove under the action of gravity.

[0034] This makes it easier to collect the corresponding zinc alloy nuts. According to some embodiments of this application, a rotary encoder and a programmable logic controller are also included; wherein the rotary encoder is mounted on the end of the center roller 131 and is configured to detect the rotation angle or number of turns of the threaded section in real time; the programmable logic controller is electrically connected to the rotary encoder and is configured to receive feedback signals from the rotary encoder.

[0035] According to some embodiments of this application, the first rotating wheel 12 is detachably connected to the rotating roller 121, the diameter of the rotating roller 121 is adjustable, and the diameter of the second rotating wheel 13 is adjustable.

[0036] In this embodiment, the first rotating wheel 12 is axially fitted with multiple layers of annular rings. By increasing or decreasing the number of annular rings, the diameter of the corresponding rotating roller 121 can be adjusted. The structure of the second rotating wheel 13 can refer to the structure of the first rotating wheel 12, and will not be described again here.

[0037] The rotational speed of the corresponding center roller 131 can be adjusted by adjusting the diameter of the rotating roller 121 and the diameter of the second rotating wheel 13.

[0038] According to some embodiments of this application, the first rotating wheel 12 and the second rotating wheel 13 are made of high-strength cast iron or stainless steel, and their surfaces are carburized and quenched to a surface hardness of not less than HRC50; the rotating roller 121 is made of bearing steel, and its surface hardness is not less than HRC60 after quenching and tempering.

[0039] According to some embodiments of this application, the bottom of the mounting base 14 is provided with a shock-absorbing pad. In this way, the vibration of the mounting base 14 during use of the entire device can be reduced.

[0040] According to some embodiments of this application, the device further includes a controller, a speed sensor, and a torque sensor; the speed sensor is disposed on the rotating roller 121 and configured to detect the speed of the first rotating wheel 12; the torque sensor is disposed on the center roller 131 and configured to detect the torque value during the unscrewing process; the controller is electrically connected to the drive component 10, the speed sensor, and the torque sensor respectively; when the torque value exceeds a preset threshold, the controller controls the drive component 10 to reduce the speed; when the torque value is lower than the preset threshold, the controller controls the drive component 10 to increase the speed; the controller also has a touch screen for displaying operating parameters and fault information.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An automatic unscrewing device for zinc alloy, characterized in that, include: The drive component (10), the transmission component (11), the first rotating wheel (12), at least one second rotating wheel (13), and at least one fixed seat (14). One end of the transmission component (11) is connected to the power output end of the driving component (10), and the other end is connected to the first rotating wheel (12). The first rotating wheel (12) is provided with a rotating roller (121), which meshes with the second rotating wheel (13). The second rotating wheel (13) is provided with a center roller (131), which is rotatably connected to the fixed seat (14). The end of the center roller (131) away from the second rotating wheel (13) is provided with a threaded section (132), and the thread specification of the threaded section (132) is adapted to the internal thread specification of the zinc alloy nut to be unthreaded.

2. The zinc alloy automatic unscrewing device according to claim 1, characterized in that, The surface of the rotating roller (121) is provided with a meshing groove, and the inner wall of the meshing groove is provided with a wear-resistant coating.

3. The zinc alloy automatic unscrewing device according to claim 1, characterized in that, Along the root of the thread segment (132) toward the end, the crest height of the thread segment (132) gradually decreases or the mean diameter of the thread gradually decreases.

4. The zinc alloy automatic unscrewing device according to claim 1, characterized in that, It also includes a cooling and lubrication system; The cooling and lubrication system includes an internal cooling channel and an external spray unit; the internal cooling channel is located inside the center roller (131), one end of the cooling channel is connected to an external coolant source, and the other end of the cooling channel leads to the threaded section (132) area; The external spraying unit is located outside the threaded section (132) and is configured to spray a release agent onto the interface between the threaded section (132) and the zinc alloy nut before or during demolding.

5. The zinc alloy automatic unscrewing device according to claim 1, characterized in that, It also includes a nut receiving and guiding mechanism; The nut receiving and guiding mechanism includes an inclined guide groove and a collection box. The inlet end of the inclined guide groove is located below the end of the threaded section (132), and the inclined guide groove is connected to the collection box. The screwed-out zinc alloy nut falls into the collection box along the inclined guide groove under the action of gravity.

6. The zinc alloy automatic unscrewing device according to claim 1, characterized in that, It also includes rotary encoders and programmable logic controllers; The rotary encoder is mounted on the end of the center roller (131) and is configured to detect the rotation angle or number of turns of the threaded section in real time; the programmable logic controller is electrically connected to the rotary encoder and is configured to receive the feedback signal from the rotary encoder.

7. The zinc alloy automatic unscrewing device according to claim 1, characterized in that, The first rotating wheel (12) is detachably connected to the rotating roller (121), the diameter of the rotating roller (121) is adjustable, and the diameter of the second rotating wheel (13) is adjustable.

8. The zinc alloy automatic unscrewing device according to claim 1, characterized in that, The first rotating wheel (12) and the second rotating wheel (13) are made of high-strength cast iron or stainless steel, and their surfaces are carburized and quenched, with a surface hardness of not less than HRC50; the rotating roller (121) is made of bearing steel, and its surface hardness is not less than HRC60 after quenching and tempering.

9. The zinc alloy automatic unscrewing device according to claim 1, characterized in that, The bottom of the fixed base (14) is provided with a shock-absorbing pad.

10. The zinc alloy automatic unscrewing device according to claim 1, characterized in that, It also includes a controller, a speed sensor, and a torque sensor; The speed sensor is disposed on the rotating roller (121) and is configured to detect the speed of the first rotating wheel (12); The torque sensor is mounted on the center roller (131) and is configured to detect the torque value during the unscrewing process; The controller is electrically connected to the drive unit (10), the speed sensor and the torque sensor respectively. When the torque value exceeds a preset threshold, the controller controls the drive unit (10) to reduce the speed. When the torque value is lower than the preset threshold, the controller controls the drive unit (10) to increase the speed. The controller is also equipped with a touch screen for displaying operating parameters and fault information.

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