Automatic threading guide mechanism with cushioned sensing structure

Abstract

The utility model provides a kind of automatic threading guide mechanism with buffer sensing structure, it includes guide core pipe and buffer spring, buffer spring is installed in guide core pipe bottom, this guide mechanism installs buffer spring in guide core pipe bottom, when guide core pipe is close to workpiece, buffer spring first and workpiece resist and combine, exert buffer force, effectively avoid the hard collision between guide core pipe and workpiece, reduce the risk of equipment damage, prolong service life, while reduce the impact damage that workpiece can be caused in threading process, guide core pipe is arranged along vertical, its inside forms cutting wire conveying channel, the conveying process of cutting wire is guided, and guide core pipe top is installed in wire cutting equipment rack by locating seat block and lifting structure, the position of guide core pipe can be accurately controlled, ensure that the cutting wire output from guide core pipe can accurately enter the threading hole of workpiece, improve the accuracy and success rate of threading.

Description

Technical Field

[0001] This utility model relates to an electrical discharge wire cutting device, and more particularly to an automatic wire threading guide mechanism with a buffer sensing structure. Background Technology

[0002] Patent document CN220921171U discloses an automatic wire threading guide mechanism, which includes an upper wire threading mechanism, a lower wire threading mechanism, and a lifting drive mechanism. The lifting drive mechanism can drive the upper wire threading mechanism and / or the lower wire threading mechanism to move up and down to achieve docking or separation between the two. A guide tube capable of penetrating a small-diameter hole in the workpiece is provided between the upper and lower wire threading mechanisms. By setting a guide tube capable of penetrating a small-diameter hole in the workpiece, docking of the upper and lower wire threading mechanisms is achieved, thereby realizing automatic wire threading. However, the guide tube of this guide mechanism is prone to collision with the workpiece to be cut during the lifting process, which affects the installation accuracy of the guide tube and its related components, and causes deformation of the guide tube, resulting in equipment failure. Therefore, it is necessary to optimize the structure of this guide mechanism to overcome the above-mentioned defects. Utility Model Content

[0003] The purpose of this invention is to provide an automatic wire threading guide mechanism with a buffer sensing structure to avoid collisions with the workpiece.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] An automatic threading guide mechanism with a buffer sensing structure includes:

[0006] The guide tube is arranged vertically and forms a cutting wire conveying channel inside it, which can guide the cutting wire conveying process. The top of the guide tube is installed in the frame of the wire cutting equipment through a lifting structure, and can rise or fall in the wire cutting equipment. Its bottom points to the workpiece to be cut, so that the cutting wire output from the guide tube enters the wire threading hole of the workpiece.

[0007] A buffer spring is installed at the bottom of the guide tube and can rise or fall with the guide tube. Its end extends downwards from the guide tube. When the guide tube approaches the workpiece, the buffer spring abuts against the workpiece and applies a buffering force to the guide tube.

[0008] In one embodiment of this utility model, a positioning groove is provided on the outer wall of the guide core tube. The positioning groove is located at the bottom of the guide core tube and is a spiral structure adapted to the shape of the buffer spring. The upper section of the buffer spring is embedded in the positioning groove, and its lower section extends downwards from the guide core tube.

[0009] In one embodiment of this utility model, the end of the buffer spring extends 2-3 mm downwards towards the guide core tube.

[0010] In one embodiment of this utility model, the guiding mechanism further includes:

[0011] The positioning block is installed in the frame of the wire cutting equipment through connectors at both ends. The middle part is provided with a positioning through hole, the top of the guide core tube extends into the positioning through hole, and the guide core tube is fixedly connected to the positioning block by locking bolts.

[0012] In one embodiment of this utility model, the guide core tube corresponds to the position of the upper water nozzle, and its bottom can carry a buffer spring that passes through the upper water nozzle and docks with the workpiece below the upper water nozzle.

[0013] In one embodiment of this utility model, the positioning block is installed in the lifting frame, and the lifting frame is installed in the wire cutting equipment frame via a slide rail, so that the guide core tube can rise or fall with the positioning block and the lifting frame in the wire cutting equipment frame.

[0014] In one embodiment of this utility model, the lifting frame cooperates with the lifting drive assembly installed in the frame of the wire cutting equipment. The lifting drive assembly drives the lifting frame to rise or fall. The lifting drive assembly is a screw and nut pair.

[0015] The advantages of this utility model are:

[0016] The guiding mechanism has a buffer spring installed at the bottom of the guide core tube. When the guide core tube approaches the workpiece, the buffer spring first abuts against the workpiece, applying a buffering force, which effectively avoids hard collisions between the guide core tube and the workpiece, reduces the risk of equipment damage, extends service life, and reduces the impact damage that may be caused to the workpiece during wire threading. The guide core tube is arranged vertically, and its interior forms a cutting wire conveying channel to guide the conveying process of the cutting wire. The top of the guide core tube is installed in the frame of the wire cutting equipment through a positioning block and a lifting structure, which can precisely control the position of the guide core tube and ensure that the cutting wire output from the guide core tube can accurately enter the wire threading hole of the workpiece, improving the accuracy and success rate of wire threading. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the bottom structure of the automatic threading guide mechanism with a buffer sensing structure proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the top structure of the guiding mechanism;

[0019] Figure 3 This is an exploded view of the guide core tube, buffer spring, and positioning block. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0021] like Figures 1-3 As shown, the automatic wire threading and guiding mechanism with a buffer sensing structure proposed in this utility model includes a guide core tube 100 and a buffer spring 200. The guide core tube is arranged vertically and forms a cutting wire conveying channel inside it, which can guide the conveying process of the cutting wire. The top of the guide core tube is installed in the frame of the wire cutting equipment through a lifting structure, and can rise or fall in the wire cutting equipment. Its bottom points to the workpiece to be cut, so that the cutting wire output from the guide core tube enters the wire threading hole of the workpiece. The buffer spring is installed at the bottom of the guide core tube and can rise or fall with the guide core tube. Its end extends downwards from the guide core tube. When the guide core tube is close to the workpiece, the buffer spring abuts against the workpiece and applies a buffering force to the guide core tube.

[0022] In this embodiment, a positioning groove 110 is provided on the outer wall of the guide core tube. The positioning groove is located at the bottom of the guide core tube and is a spiral structure adapted to the shape of the buffer spring. The upper section of the buffer spring is embedded in the positioning groove, and its lower section extends downwards from the guide core tube.

[0023] In this embodiment, the end of the buffer spring extends 2 mm below the guide core tube.

[0024] In this embodiment, the guiding mechanism also includes a positioning block 300. The two ends of the positioning block are installed in the frame of the wire cutting equipment through connectors. The middle part is provided with a positioning through hole. The top of the guide core tube extends into the positioning through hole and is fixedly connected to the positioning block by locking bolts.

[0025] In this embodiment, the guide core tube corresponds to the upper water nozzle 400 position, and its bottom can carry a buffer spring that passes through the upper water nozzle and docks with the workpiece below the upper water nozzle.

[0026] In this embodiment, the positioning block is installed in the lifting frame 500, and the lifting frame is installed in the wire cutting equipment frame via the slide rail 510, so that the guide core tube can rise or fall in the wire cutting equipment frame along with the positioning block and the lifting frame.

[0027] In this embodiment, the lifting frame cooperates with the lifting drive assembly installed in the frame of the wire cutting equipment. The lifting drive assembly drives the lifting frame to rise or fall. The lifting drive assembly is a lead screw and nut pair 600.

[0028] In this embodiment, a pressure sensor is also provided between the lifting frame and the wire cutting equipment frame. It is connected to the lead screw and nut pair through a line. When the buffer spring abuts against the workpiece and is compressed, the pressure sensor senses the pressure and knows that the guide core tube is about to contact the workpiece. At this time, the lead screw and nut pair stops running, which can prevent the guide core tube from being deformed by pressure.

[0029] In the description of this utility model, it should be noted that when terms such as "upper," "lower," "inner," "outer," "left," and "right" appear to indicate orientation or positional relationships, they should be understood as being based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product of this utility model is in use, or the orientation or positional relationships commonly understood by those skilled in the art. These terms are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component 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 this utility model. Furthermore, when terms such as "first" and "second" appear, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that unless otherwise explicitly specified and limited, terms such as "installation," "setting," and "connection" should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. An automatic threading and guiding mechanism with a buffer sensing structure, characterized in that, include: The guide tube is arranged vertically and forms a cutting wire conveying channel inside it, which can guide the cutting wire conveying process. The top of the guide tube is installed in the frame of the wire cutting equipment through a lifting structure, and can rise or fall in the wire cutting equipment. Its bottom points to the workpiece to be cut, so that the cutting wire output from the guide tube enters the wire threading hole of the workpiece. A buffer spring is installed at the bottom of the guide tube and can rise or fall with the guide tube. Its end extends downwards from the guide tube. When the guide tube approaches the workpiece, the buffer spring abuts against the workpiece and applies a buffering force to the guide tube.

2. The automatic threading and guiding mechanism with a buffer sensing structure according to claim 1, characterized in that: The outer wall of the guide core tube is provided with a positioning groove. The positioning groove is located at the bottom of the guide core tube and has a spiral structure that matches the shape of the buffer spring. The upper section of the buffer spring is embedded in the positioning groove, and its lower section extends downwards from the guide core tube.

3. The automatic threading and guiding mechanism with a buffer sensing structure according to claim 1, characterized in that: The end of the buffer spring extends 2-3 mm below the guide core tube.

4. The automatic threading and guiding mechanism with a buffer sensing structure according to claim 1, characterized in that, Also includes: The positioning block is installed in the frame of the wire cutting equipment through connectors at both ends. The middle part is provided with a positioning through hole, the top of the guide core tube extends into the positioning through hole, and the guide core tube is fixedly connected to the positioning block by locking bolts.

5. The automatic threading and guiding mechanism with a buffer sensing structure according to claim 1, characterized in that: The guide tube corresponds to the position of the upper water nozzle, and its bottom can carry a buffer spring that passes through the upper water nozzle and docks with the workpiece below the upper water nozzle.

6. The automatic threading and guiding mechanism with a buffer sensing structure according to claim 1, characterized in that: The positioning block is installed in the lifting frame, which is installed in the wire cutting equipment frame via a slide rail, so that the guide core tube can rise or fall with the positioning block and the lifting frame in the wire cutting equipment frame.

7. An automatic threading guide mechanism with a buffer sensing structure according to claim 6, characterized in that: The lifting frame works in conjunction with the lifting drive assembly installed in the frame of the wire cutting equipment. The lifting drive assembly drives the lifting frame to rise or fall. The lifting drive assembly is a screw and nut pair.

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