Micro-diameter wire drawing device and wire drawing machine

Abstract

The utility model discloses a micro-diameter wire drawing device and a wire drawing machine. The micro-diameter wire drawing device comprises the micro-diameter wire drawing device and the wire drawing machine, the micro-diameter wire drawing device comprises a bearing seat embedded in the wall plate in a penetrating mode, a bearing is borne in the bearing seat, the bearing is movably connected with a power transmission shaft, the upper end and the lower end of the power transmission shaft are located on the outer side of the bearing seat, and the bottom of the power transmission shaft is fixedly connected with a wire drawing wheel. The wire drawing wheel and the power transmission shaft are coaxial, and the top of the power transmission shaft is driven by a driving mechanism to axially rotate; the wire drawing machine comprises the micro-diameter wire drawing device and a tension mechanism. The wire drawing machine is reasonable in design, compact in structure and good in wire drawing manufacturability; parts are modularized, the structure is simplified, no special-shaped part exists, and the machining process is simple and reasonable. And an operation interface adopts a human-computer interface touch screen, and operation and display adopt a human-computer interface dialogue form, so that the setting and display of the drawing process parameters are simple and clear and are clear at a glance.

Description

Technical Field

[0001] This utility model relates to the field of wire drawing equipment technology, and in particular to a micro-diameter wire drawing device and wire drawing machine. Background Technology

[0002] Currently, with the rise of diamond production lines, the market demand for fine and micro-fine filament drawing machines is constantly increasing. Although there are many domestic manufacturers of filament drawing machines, very few are capable of manufacturing micro-fine filament drawing machines.

[0003] To produce fine filaments with micro-diameters, the wire drawing machine needs to control the tension of the wire, which is the key to improving the quality of wire drawing. However, current wire drawing machines often only provide a single tension, which makes it difficult to draw fine filaments with micro-diameters and easily causes wire breakage and failure.

[0004] Meanwhile, the wire drawing device in the current wire drawing machine requires a transmission mechanism between the wire drawing roller and the drive shaft, which causes misalignment between the wire drawing roller and the drive shaft. This makes the wire prone to shrinkage during wire drawing and also affects the wire drawing quality. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a micro-diameter wire drawing device and wire drawing machine to address the shortcomings of the prior art, thereby solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a micro-diameter wire drawing device, including a bearing seat that runs through and is embedded in a wall panel, the bearing seat carrying a bearing, the bearing being movably connected to a power transmission shaft, the upper end and the lower end of the power transmission shaft being located on the outside of the bearing seat respectively, the bottom of the power transmission shaft being fixedly connected to a wire drawing wheel, the wire drawing wheel and the power transmission shaft being coaxial, and the top of the power transmission shaft being driven to rotate axially by a drive mechanism.

[0007] Furthermore, the drawing wheel has a cylindrical structure, and the surfaces at both the upper and lower ends of the drawing wheel are respectively provided with shoulders along the circumference of the drawing wheel.

[0008] Furthermore, an adjustment shim with variable thickness is provided at the position where the bearing seat contacts the lower part of the wall panel.

[0009] Furthermore, the drive mechanism includes a toothed belt, a synchronous pulley, and an AC servo motor;

[0010] The synchronous pulley is circumferentially disposed on the power transmission shaft along the surface of the upper end of the power transmission shaft;

[0011] The output end of the AC servo motor is connected to the synchronous pulley in the same direction via a toothed belt, and the output end of the synchronous pulley and the AC servo motor respectively mesh with the toothed belt.

[0012] Furthermore, the wire drawing wheel and the power transmission shaft are integrally formed.

[0013] Based on the above-mentioned utility model concept, this utility model applies the above-mentioned micro-diameter wire drawing device to a wire drawing machine, and proposes a wire drawing machine including the above-mentioned micro-diameter wire drawing device.

[0014] Furthermore, the wire drawing machine also includes a tension mechanism, the tension of which can be adjusted via electrical control.

[0015] This utility model has the following advantages compared with the prior art:

[0016] This utility model provides a micro-diameter wire drawing device and a wire drawing machine. In the micro-diameter wire drawing device, the wire drawing wheel and the power transmission shaft are made into an integral structure, reducing the connection links and thus reducing the accumulation of errors. At the same time, it ensures the concentricity of the two shafts and improves the rotation accuracy. This can be ensured through machining, thereby improving the wire drawing quality.

[0017] This utility model provides a micro-diameter wire drawing device and a wire drawing machine. The tension mechanism in the wire drawing machine is adjusted by electrical control to achieve constant tension and constant linear speed control during the wire drawing process. Therefore, it can be applied to equipment for drawing tungsten and molybdenum wires with diameters of φ0.03 to φ0.015mm, extending the service life of the easily worn wire drawing roller, reducing production costs, and expanding the product range.

[0018] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a micro-diameter wire drawing device provided by this utility model.

[0020] Figure 2 This is a schematic diagram of the overall structure of a wire drawing machine provided by this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Drawing wheel; 2. Bearing housing; 3. Adjusting shim; 4. Wall panel; 5. Power transmission shaft; 6. Toothed belt; 7. Synchronous pulley; 8. AC servo motor; 9. Shaft shoulder; 10. Second guide wheel group; 11. Wire feeding mechanism; 12. First guide wheel group; 13. Graphite lubrication groove; 14. Electric furnace; 15. Mold furnace; 16. Wire forming cylinder; 17. Tension mechanism; 18. Wire take-up and laying mechanism. Detailed Implementation

[0023] like Figure 1 As shown, this utility model provides a micro-diameter wire drawing device, including a bearing seat 2 that runs through and is embedded in a wall panel 4. The bearing seat 2 carries a bearing, which is movably connected to a power transmission shaft 5. The upper and lower ends of the power transmission shaft 5 are located on the outside of the bearing seat 2, respectively. The bottom of the power transmission shaft 5 is fixedly connected to a wire drawing wheel 1. The wire drawing wheel 1 and the power transmission shaft 5 are coaxial. The top of the power transmission shaft 5 is driven to rotate axially by a drive mechanism.

[0024] In this invention, the thread to be drawn is pulled by the drawing wheel 1, and the rotation of the drawing wheel 1 realizes the drawing process.

[0025] In this invention, the drawing wheel 1 has a cylindrical structure, and shoulders 9 are respectively provided on the upper and lower ends of the drawing wheel 1 along its circumference. The drawing wheel 1 is made of 45# steel, and its outer surface is coated with tungsten carbide using a coating thickness of not less than 1mm and a surface hardness of not less than HV900. The shoulders 9 are 2mm high and 6mm wide to prevent the wire wrapped around the drawing wheel 1 from falling off during the drawing process.

[0026] In this invention, a variable-thickness adjusting shim 3 is provided at the contact position between the bearing seat 2 and the lower part of the wall panel 4. Adjusting the thickness of the adjusting shim 3 changes the winding position of the wire on the drawing wheel 1. After a period of use, the outer surface of the drawing wheel 1 will be worn with grooves by the wire, which seriously affects the drawing quality. Increasing or decreasing the thickness of the adjusting shim 3 between the bearing seat 2 and the wall panel 4 in the drawing device will cause the drawing wheel 1 to move forward or backward, changing the winding position of the wire on the drawing wheel 1, thereby improving the service life of the drawing wheel 1.

[0027] In this utility model, the drive mechanism includes a toothed belt 6, a synchronous pulley 7, and an AC servo motor 8. The AC servo motor 8 is selected as the drive element for wire drawing because the AC servo motor 8 has the characteristics of high precision, fast response, wide speed range, large acceleration, and large overload capacity.

[0028] The synchronous pulley 7 is circumferentially arranged on the upper end of the power transmission shaft 5; the output end of the AC servo motor 8 is rotatably connected to the synchronous pulley 7 via a toothed belt 6, and the output ends of the synchronous pulley 7 and the AC servo motor 8 respectively mesh with the toothed belt 6.

[0029] In this invention, the drawing wheel 1 and the power transmission shaft 5 are integrally formed. The integral structure of the drawing wheel 1 and the power transmission shaft 5 reduces connection points, thereby reducing error accumulation and ensuring the concentricity of the two shafts, improving rotational accuracy. This can be achieved through machining, thus improving the drawing quality.

[0030] Based on the aforementioned wire drawing device, this utility model also proposes a wire drawing machine, such as... Figure 2 As shown, the above-mentioned micro-diameter wire drawing device.

[0031] Meanwhile, the wire drawing machine of this utility model also includes a tension mechanism 17, the tension of which can be adjusted by electrical control. This achieves constant tension and constant linear speed control during the wire drawing process. Specifically, the electrical control of this utility model is constant tension and constant linear speed control, which is completed through an operating interface, which is a human-machine interface touchscreen.

[0032] In this invention, the wire drawing machine includes a wire feeding mechanism 11, a first guide wheel assembly 12, a graphite lubrication groove 13, an electric furnace 14, a mold furnace 15, a wire-forming cylinder 16, a tension mechanism 17, a take-up and wire-laying mechanism 18, and the aforementioned micro-diameter wire drawing device. This allows for the control of wire feeding, drawing, and take-up entirely by AC servo motors, with a human-machine interface touchscreen. The wire drawing wheel in the drawing device is a straight cylindrical steel roller with a powder-coated surface. Shoulders are provided at both ends of the wire drawing wheel. The wire drawing wheel and the drive shaft are integrated into a single structure, reducing intermediate connecting links. Adjusting washers are added to adjust the winding position of the wire on the wire drawing wheel. A linear module is used for wire laying.

[0033] The cable winding mechanism 18 uses a linear module for cable winding.

[0034] Before the wire drawing machine starts operating, all components are first installed, then power is applied, and the wire feeding servo motor rotates to actively feed the wire. The swing of the wire feeding tension lever is observed, and the wire feeding tension knob on the electrical box is adjusted until the lever stabilizes. A speed encoder mounted on the counting wheel in the tension mechanism detects the linear speed of the wire drawing wheel and simultaneously provides speed feedback to the take-up servo motor. The take-up motor's speed is calculated using the number of wire layers to determine the roll diameter and is controlled to follow the wire drawing speed, thus ensuring constant linear speed control during the take-up process. This reduces errors between different linear speeds and solves problems such as wire breakage, loose take-up, or thinning of the wire during drawing, improving wire drawing quality. During this process, the tension lever on the tension mechanism swings according to changes in the take-up tension, ensuring constant tension control during take-up.

[0035] In summary, this utility model features a reasonable design, compact structure, and excellent wire drawing processability. The components are modularized, simplifying the structure, eliminating irregularly shaped parts, and making the processing technology simple and reasonable. The operating interface uses a human-machine interface touchscreen, and the operation and display are conducted through a human-machine interface dialogue, making the setting and display of wire drawing process parameters simple, clear, and easy to understand.

[0036] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A micro-diameter wire drawing device, characterized in that, It includes a bearing housing (2) embedded in the wall panel (4), which carries a bearing and is movably connected to a power transmission shaft (5). The upper and lower ends of the power transmission shaft (5) are located on the outside of the bearing housing (2), and the bottom of the power transmission shaft (5) is fixedly connected to a wire drawing wheel (1). The wire drawing wheel (1) and the power transmission shaft (5) are coaxial, and the top of the power transmission shaft (5) is driven to rotate axially by a drive mechanism.

2. A micro-diameter wire drawing device according to claim 1, characterized in that, The drawing wheel (1) has a straight cylindrical structure, and the surfaces at the upper and lower ends of the drawing wheel (1) are respectively provided with shoulders (9) along the circumference of the drawing wheel (1).

3. A micro-diameter wire drawing device according to claim 1, characterized in that, An adjustable pad (3) with variable thickness is provided at the position where the bearing seat (2) contacts the lower part of the wall panel (4).

4. A micro-diameter wire drawing device according to claim 1, characterized in that, The drive mechanism includes a toothed belt (6), a synchronous pulley (7), and an AC servo motor (8); The synchronous pulley (7) is circumferentially disposed on the upper end of the power transmission shaft (5); The output end of the AC servo motor (8) is connected to the synchronous pulley (7) in the same direction via a toothed belt (6), and the output ends of the synchronous pulley (7) and the AC servo motor (8) are respectively engaged with the toothed belt (6).

5. A micro-diameter wire drawing device according to claim 1, characterized in that, The wire drawing wheel (1) and the power transmission shaft (5) are integrally formed.

6. A wire drawing machine, characterized in that, Includes the micro-diameter wire drawing device as described in any one of claims 1-4.

7. A wire drawing machine according to claim 6, characterized in that, It also includes a tension mechanism (17), the tension of which can be adjusted by electrical control.

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