Lifting mechanism for controlling threading catheter
By using rollers made of elastic materials or radial elastic telescopic structures to clamp the wire threading guide in the wire EDM device, the problems of wire threading guide rotation and slippage are solved, and a stable and precise wire threading path is established.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI ZHUOAO TECH CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-12
AI Technical Summary
In the wire EDM process, the wire guide tube is smooth and cylindrical, which causes it to rotate or slip during driving, affecting the accurate construction of the wire threading path.
The wire-threading guide is clamped by an active roller and a driven roller. At least one of the rollers is covered with an elastic material or has a radial elastic telescopic structure. The friction surface is in contact with the outer cylindrical surface of the wire-threading guide, and the anti-rotation surface abuts against the other roller to enhance friction and limit rotation.
This improves the stability of the wire threading guide tube during lifting and lowering, ensuring the precise construction of the electrode wire threading path.
Smart Images
Figure CN224222897U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wire cutting device technical field, specifically, relate to a kind of control the lifting mechanism of silk guide pipe. BACKGROUND
[0002] In the machining process, especially in the wire-cut electrical discharge machining process, it is often necessary to first complete the electrode wire, such as molybdenum wire, copper wire or galvanized wire, to build a wire threading path, and then perform cutting processing after the wire threading is completed. The existing electrode wire threading method: the electrode wire is threaded through the workpiece hole by the wire threading mechanism above the workpiece and then sent to the wire feeding mechanism. In order to achieve precise wire threading, the applicant has made improvements by providing a fixed seat on the wire feeding mechanism, an lifting channel is formed in the fixed seat, and a wire threading guide pipe is arranged inside the lifting channel. By controlling the lifting of the wire threading guide pipe, the wire threading guide pipe can be connected with the workpiece or the wire threading mechanism, and the construction of the electrode wire threading path can be realized. However, in actual application, the applicant found that when the driving unit's driving roller and driven roller clamp and feed the wire threading guide pipe to move up and down, the wire threading guide pipe will rotate or slip due to its smooth outer surface and cylindrical shape, which will cause the wire threading guide pipe to lift unevenly and unable to accurately complete the construction of the wire threading path, seriously affecting the realization of automatic electrode wire threading. Therefore, it is urgent to overcome the defects of the existing technology in this technical field. SUMMARY
[0003] The utility model provides a kind of control the lifting mechanism of silk guide pipe, to improve the problem that wire threading guide pipe occurs self-rotation or driving unit and wire threading guide pipe slip phenomenon when driving wire threading guide pipe, wire threading guide pipe lifts unevenly.
[0004] To achieve the above purpose, the utility model provides a kind of control the lifting mechanism of silk guide pipe, and the specific technical solutions are as follows:
[0005] A kind of control the lifting mechanism of silk guide pipe, including the driving unit that can drive wire threading guide pipe to realize lifting, the driving unit includes driving roller and driven roller, the rotation direction of the driving roller and driven roller is opposite, wire threading guide pipe is arranged between the driving roller and driven roller, and the driving roller and driven roller can clamp wire threading guide pipe, and the driving roller and driven roller are moved up and down by clamping and feeding wire threading guide pipe by rotation;
[0006] At least one of the driving roller and driven roller is a roller coated with elastic material or having a radial elastic expansion structure, the outer cylindrical surface of the wire threading guide pipe includes an opposing friction surface and an anti-rotation surface, the friction surface abuts against the roller coated with elastic material or having a radial elastic expansion structure, and the anti-rotation surface abuts against the other roller.
[0007] In one of the embodiments, the driving unit is arranged on a power unit, the power unit comprises a driving power member and a driven power member, the driving power member is capable of driving the driven power member to rotate, and the driving power member and the driven power member rotate in opposite directions, the driving roller is coaxially connected with the driving power member, and the driven roller is coaxially connected with the driven power member.
[0008] In one of the embodiments, the driving power member and the driven power member are mutually meshed gears.
[0009] In one of the embodiments, the power unit is arranged on a fixing base, the fixing base is internally provided with a lifting channel, and the wire feeding conduit is capable of moving up and down along the lifting channel.
[0010] In one of the embodiments, the wire feeding conduit extends out of the lifting channel and can be inserted into a lower recess hole of a workpiece, and an electrode wire passes through the wire feeding conduit through a machining hole of the workpiece.
[0011] In one of the embodiments, the fixing base is further provided with a driving motor, and the driving power member is connected with an output end of the driving motor.
[0012] In one of the embodiments, the anti-rotation surface is a plane or a groove structure.
[0013] In one of the embodiments, the friction surface is sawtooth-shaped or sand-grit-shaped.
[0014] In one of the embodiments, the friction surface is composed of a plurality of convex bosses arranged along the axial direction of the wire feeding conduit, and the convex bosses abut against rollers coated with elastic material or having radial elastic expansion structure.
[0015] In one of the embodiments, when the roller is coated with elastic material, the elastic material is rubber.
[0016] When the roller has radial elastic expansion structure, the elastic expansion structure is an annular ring made of rubber material.
[0017] The beneficial effects of the embodiments are as follows:
[0018] At least one of the driving roller and the driven roller is a roller coated with elastic material or having radial elastic expansion structure, the outer cylindrical surface of the wire guide tube comprises a friction surface and an anti-rotation surface arranged oppositely, the friction surface abuts against the roller coated with elastic material or having radial elastic expansion structure, the elastic material or the elastic expansion structure has a certain elasticity, when the driving roller and the driven roller clamp the wire guide tube, the contact area with the wire guide tube is increased, and the friction force between the two is enhanced, the anti-rotation surface abuts against the other roller, when the roller drives the wire guide tube to move up and down, the wire guide tube is prevented from rotating, so that the wire guide tube can only rise and fall, and the stability of the wire guide tube during the rising and falling is greatly improved, and the construction of the wire threading path is accurately completed. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope of protection. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0020] Figure 1 is a schematic diagram of the installation position of the power unit and the driving unit provided by the embodiments of the present application;
[0021] Figure 2 is a schematic diagram of the installation position of the driving unit and the wire guide tube provided by the embodiments of the present application;
[0022] Figure 3 is Figure 2 is an enlarged view of A;
[0023] Figure 4 is a schematic diagram of the wire guide tube retracted into the fixed seat provided by the embodiments of the present application;
[0024] Figure 5 is a schematic diagram of the wire guide tube extended out of the fixed seat provided by the embodiments of the present application;
[0025] Figure 6 is a schematic diagram of the installation position of the wire guide tube and the fixed seat provided by the embodiments of the present application;
[0026] Figure 7 is a schematic diagram of the position of the anti-rotation surface on the wire guide tube provided by the embodiments of the present application;
[0027] Figure 8 is a schematic diagram of the position of the friction surface on the wire guide tube provided by the embodiments of the present application;
[0028] Figure 9The anti-rotation surface and the friction surface are provided according to the embodiment of the utility model.
[0029] Figure 10 The utility model discloses a boss friction surface structure schematic diagram.
[0030] Mark explanation:
[0031] 100, power unit, 110, driving power piece, 120, driven power piece,
[0032] 200, drive unit, 210, driving roller, 220, driven roller,
[0033] 300, silk guide pipe, 310, anti-rotation surface, 320, friction surface, 321, boss,
[0034] 400, fixed seat, 410, lifting channel, 420, drive motor,
[0035] 500, workpiece. Specific implementation
[0036] In order to make the utility model embodiment's purpose, technical scheme and advantage more clearly, below will combine the drawing in the utility model embodiment, to the technical scheme in the utility model embodiment, clear, complete, it is obvious that the described embodiment is the part of the utility model embodiment, instead of all the embodiment.Based on the embodiment in the utility model, all other embodiments that the person skilled in the art obtains without making the creative labor are within the scope of the utility model protection.
[0037] The technical scheme provided by the utility model embodiment will be introduced below in combination with the drawings.
[0038] Please refer to Figures 1-10 The utility model embodiment provides a kind of lifting mechanism of control silk guide pipe, including the drive unit 200 that can drive silk guide pipe 300 to realize lifting, drive unit 200 includes driving roller 210 and driven roller 220, the rotating direction of driving roller 210 and driven roller 220 is opposite, silk guide pipe 300 is arranged between driving roller 210 and driven roller 220, and driving roller 210 and driven roller 220 can clamp silk guide pipe 300, driving roller 210 and driven roller 220 are moved up and down by rotating to clamp silk guide pipe 300 and send it;
[0039] It should be noted that at least one of the driving roller 210 and the driven roller 220 is a roller coated with an elastic material or having a radial elastic expansion structure. When the roller is coated with an elastic material, the elastic material is rubber, and of course other elastic materials can also be selected. When the roller has a radial elastic expansion structure, the elastic expansion structure is a ring of rubber material or other elastic material, that is, the entire roller is a ring of rubber material or other elastic material.
[0040] The outer cylindrical surface of the wire threading guide tube 300 includes an opposite friction surface 320 and an anti-rotation surface 310. The friction surface 320 is in abutment with the roller coated with an elastic material or having a radial elastic expansion structure, and the anti-rotation surface 310 is in abutment with the other roller. Specifically, the friction surface 320 is sawtooth-shaped or frosted or is composed of a plurality of bosses 321 arranged axially along the wire threading guide tube 300. The bosses 321 are in abutment with the roller coated with an elastic material or having a radial elastic expansion structure. The elastic material or the elastic expansion structure has a certain elasticity and ductility. When the driving roller 210 and the driven roller 220 clamp the wire threading guide tube 300, the wire threading guide tube 300 will exert a reaction force on the elastic material or the elastic expansion structure. Under the action of the reaction force, the elastic material or the elastic expansion structure will expand outward along the outer cylindrical surface of the wire threading guide tube 300, thereby increasing the contact area with the friction surface 320 and greatly enhancing the frictional resistance between the two. This greatly reduces the probability of slipping between the wire threading guide tube 300 and the roller when the wire threading guide tube 300 moves up and down relative to the roller.
[0041] When the outer cylindrical surface of the wire threading guide tube 300 is in abutment with the outer side of the roller, the outer side of the roller is also a cylindrical surface, so the abutment position of the two perpendicular cylindrical surfaces is a point contact. When the roller drives the wire threading guide tube 300 to ascend and descend, the two point contacts cannot restrict each other, which may cause the wire threading guide tube 300 to rotate around its own axis, thereby causing the wire threading guide tube 300 to ascend and descend unstably and affecting the construction of the wire threading path. Therefore, the anti-rotation surface 310 is arranged on the side of the outer cylindrical surface of the wire threading guide tube 300 away from the friction surface 320, that is, on the opposite surface. Preferably, the anti-rotation surface 310 is a flat surface or a groove structure. When the anti-rotation surface 310 is in abutment with the outer cylindrical surface of one of the rollers, the two are in straight line contact, and the direction of the contact line is the same as the axial direction of the roller. When the driving roller 210 and the driven roller 220 drive the wire threading guide tube 300 to ascend and descend, the roller restricts the rotation of the anti-rotation surface 310 around the axial direction of the wire threading guide tube 300, thereby restricting the rotation of the wire threading guide tube 300. The ascending and descending stability of the wire threading guide tube 300 is greatly improved.
[0042] It should be noted that the driving unit 200 is arranged on the power unit 100, preferably, the power unit 100 is arranged on the fixed seat 400, the power unit 100 comprises the driving power piece 110 and the driven power piece 120, the driving power piece 110 can drive the driven power piece 120 to rotate, and the driving power piece 110 and the driven power piece 120 rotate in opposite directions, preferably, the driving power piece 110 and the driven power piece 120 are meshing gears, of course, other structures can also be selected, as long as the structures can make the driving power piece 110 and the driven power piece 120 rotate at the same speed and in opposite directions, preferably, the driving power piece 110 is coaxially connected with the driving roller 210, the driven power piece 120 is coaxially connected with the driven roller 220, and the driving power piece 110 is connected with the output end of the driving motor 420 arranged on the fixed seat 400, so that the driving motor 420 can drive the driving power piece 110 to rotate, thereby driving the driving roller 210 to rotate, the driven power piece 120 is connected with the driving power piece 110 through meshing, the driving power piece 110 drives the driven power piece 120 to rotate in the opposite direction, thereby driving the driven roller 220 to rotate, so that the wire-through conduit 300 can move up and down.
[0043] The lifting channel 410 is arranged in the fixed seat 400, the driving roller 210 and the driven roller 220 can rotate to lift the wire-through conduit 300 along the lifting channel 410 to move up and down, when the wire-through conduit 300 extends out of the lifting channel 410, the wire-through conduit 300 can be inserted into the lower recessed hole of the workpiece 500, the electrode wire enters the workpiece hole through the wire-through mechanism above the workpiece 500, and then passes through the wire-through conduit 300, so that the electrode wire wire-through path is built, when the electrode wire passes through the wire-through conduit 300, in order to further process the workpiece, the wire-through conduit 300 is lowered into the lifting channel 410 under the action of the driving roller 210 and the driven roller 220.
[0044] In the description of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connection" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0045] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A lifting mechanism for controlling a threading catheter, characterized in that, The device includes a drive unit (200) capable of driving the threading guide tube (300) to move up and down. The drive unit (200) includes a drive roller (210) and a driven roller (220). The drive roller (210) and the driven roller (220) rotate in opposite directions. The threading guide tube (300) is disposed between the drive roller (210) and the driven roller (220). The drive roller (210) and the driven roller (220) are capable of clamping the threading guide tube (300). The drive roller (210) and the driven roller (220) rotate to clamp and move the threading guide tube (300) up and down. At least one of the driving roller (210) and the driven roller (220) is a roller with a surface covered with elastic material or a roller with a radial elastic telescopic structure. The outer cylindrical surface of the threading guide (300) includes a friction surface (320) and an anti-rotation surface (310) arranged opposite to each other. The friction surface (320) abuts against the roller with a surface covered with elastic material or a radial elastic telescopic structure, and the anti-rotation surface (310) abuts against the other roller.
2. The lifting mechanism for controlling the threading catheter according to claim 1, characterized in that, The drive unit (200) is mounted on the power unit (100). The power unit (100) includes an active power component (110) and a driven power component (120). The active power component (110) can drive the driven power component (120) to rotate, and the active power component (110) and the driven power component (120) rotate in opposite directions. The active roller (210) is coaxially connected to the active power component (110), and the driven roller (220) is coaxially connected to the driven power component (120).
3. The lifting mechanism for controlling the threading catheter according to claim 2, characterized in that, The active power component (110) and the driven power component (120) are meshing gears.
4. The lifting mechanism for controlling the threading catheter according to claim 2, characterized in that, The power unit (100) is mounted on a fixed base (400), and a lifting channel (410) is provided inside the fixed base (400). The wire guide (300) can move up and down along the lifting channel (410).
5. The lifting mechanism for controlling the threading catheter according to claim 4, characterized in that, The wire-threading guide (300) extends out of the lifting channel (410) and can be inserted into the recessed hole of the workpiece (500). The electrode wire passes through the machining hole of the workpiece (500) and through the wire-threading guide (300).
6. The lifting mechanism for controlling the threading guide according to claim 4, wherein the fixed base (400) is further provided with a drive motor (420), and the active power component (110) is connected to the output end of the drive motor (420).
7. The lifting mechanism for controlling the threading catheter according to claim 1, characterized in that, The anti-rotation surface (310) is a planar or grooved structure.
8. The lifting mechanism for controlling the threading catheter according to claim 1, characterized in that, The friction surface (320) is serrated or frosted.
9. The lifting mechanism for controlling the threading catheter according to claim 1, characterized in that, The friction surface (320) is composed of a plurality of bosses (321) spaced apart along the axial direction of the wire guide (300), and the bosses (321) abut against the rollers covered with elastic material or having radial elastic telescopic structure.
10. The lifting mechanism for controlling the threading catheter according to claim 1, characterized in that, When the roller is covered with an elastic material, the elastic material is rubber; When the roller has a radial elastic telescopic structure, the elastic telescopic structure is an annular ring made of rubber.