Superfine wire feeding mechanism

Abstract

The utility model relates to a superfine wire feeding mechanism which comprises a conveying assembly, a feeding pipe, a needle shaft and a needle head which are sequentially arranged in the wire conveying direction, the conveying assembly comprises a wire feeding seat, a front baffle, a rear baffle and a wire feeding channel, the front baffle and the rear baffle are arranged on the wire feeding seat in tandem, and the wire feeding channel is formed in the front baffle and the rear baffle in a penetrating mode. The driving wheel and the driven wheel are arranged between the front baffle plate and the rear baffle plate in parallel and rotate relatively to clamp and convey a wire rod; a conveying through hole is formed in the needle shaft, one end of the feeding pipe is communicated with the wire feeding channel of the front baffle, and the other end of the feeding pipe is embedded in the rear end of the conveying through hole; the needle head comprises a sleeve arranged at the front end of the needle shaft in a sleeving mode and a needle tube arranged on the sleeve and communicated with the material conveying through hole, and the inner diameter of the needle tube ranges from 0.05 mm to 0.1 mm. Compared with the prior art, the conveying direction of the wire can be better guided while the wire is conveyed, and the problem that due to the fact that the pipe diameter of an outlet of the feeding pipe is large, the conveying direction of the superfine wire deviates due to fluctuation of conveying power is solved.

Description

Technical Field

[0001] This utility model belongs to the field of discharge lamp electrode technology and relates to an ultra-fine wire feeding mechanism. Background Technology

[0002] The core component of a traditional gas discharge lamp is the arc tube, and the most critical part of the arc tube is the electrode. The electrode, typically composed of a mandrel and a spring, plays a vital role in the arc tube. The design and material selection of the electrode directly affect the performance and lifespan of the arc tube, thus influencing the overall stability and luminous efficiency of the gas discharge lamp.

[0003] Electrode fabrication typically involves first winding a wire to create a spring, then inserting a mandrel into the spring. During the winding process, the diameter of the wire used is generally above 0.1 mm, and the wire feeding process is stable and effective. However, for small-sized wires, such as fine wires with a diameter of only 0.06 mm, the wire often wobbles along the lower edge of the wire feeding tube during the wire feeding process, resulting in the wire not being accurately and effectively fed into the next station, thus affecting production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an ultra-fine wire feeding mechanism for conveying wires smaller than 0.1mm.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A wire feeding mechanism for ultra-fine wires with a diameter of 0.02–0.04 mm, comprising the following components arranged sequentially along the wire feeding direction:

[0007] The conveying assembly includes a wire feeder, a front baffle and a rear baffle arranged one in front of the wire feeder, a wire feeding channel that passes through the front baffle and the rear baffle, and a drive wheel and a driven wheel arranged side by side between the front baffle and the rear baffle and rotating relative to each other to clamp the wire being conveyed.

[0008] Feed tube;

[0009] The needle shaft has an internal feeding through hole; one end of the feeding tube is connected to the wire feeding channel of the front baffle, and the other end is embedded in the rear end of the feeding through hole; and...

[0010] The needle includes a sleeve fitted onto the front end of the needle shaft, and a needle tube disposed on the sleeve and connected to the material feeding through hole, wherein the inner diameter of the needle tube is 0.05 to 0.1 mm.

[0011] Furthermore, the mechanism includes a stepper motor, the output shaft of which passes through the bottom of the wire feeder and is connected to the drive wheel.

[0012] Furthermore, the mechanism includes a motor base plate for supporting the stepper motor.

[0013] Furthermore, the mechanism includes a needle shaft holder for carrying the needle shaft.

[0014] Furthermore, a pressure cap is bolted onto the needle shaft seat, and the needle shaft is clamped and fixed between the pressure cap and the needle shaft seat.

[0015] Furthermore, the motor base plate is bolted to the needle shaft seat.

[0016] Furthermore, the inner diameter of the needle tube is 0.1 mm.

[0017] Furthermore, the outer diameter of the feeding tube is 2.5–3.5 mm, and the inner diameter is 0.2–0.8 mm.

[0018] Furthermore, the outer diameter of the feeding tube is 3mm and the inner diameter is 0.5mm.

[0019] Furthermore, the diameter of the wire is 0.03 mm.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention utilizes a drive wheel and a driven wheel rotating in opposite directions to clamp ultrafine tungsten wire, which then passes through the feeding channels on the front and rear baffles into the feeding tube. After entering the feeding through-hole of the needle shaft, it exits through the needle tube at the needle tip. Because the inner diameter of the needle tube matches the diameter of the ultrafine tungsten wire, it can better guide the wire's feeding direction while feeding, avoiding the problem of the ultrafine wire deviating from its feeding direction due to fluctuations in feeding power caused by a larger outlet diameter of the feeding tube. Through this improvement, the finest wire diameter can reach 0.03mm, and repeated experiments have shown consistent feed and retraction lengths, meeting product process requirements. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an ultra-fine wire feeding mechanism in one embodiment;

[0023] Figure 2 This is a cross-sectional view of an ultra-fine wire feeding mechanism in one embodiment;

[0024] Explanation of markings in the diagram:

[0025] 1-Drive wheel, 2-Stepper motor, 3-Motor base plate, 4-Needle shaft seat, 5-Needle shaft, 6-Needle head, 7-Feed tube, 8-Driven wheel, 9-Wire feeder, 10-Front baffle, 11-Rear baffle, 12-Wire feed channel, 13-Feeding through hole. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The following embodiments are based on the above-described technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] Example:

[0030] like Figure 1 and Figure 2 The diagram illustrates an ultra-fine wire feeding mechanism for conveying ultra-fine tungsten wire with a diameter of 0.03 mm. It includes a conveying assembly, a feeding tube 7, a needle shaft 5, and a needle head 6 arranged sequentially along the wire conveying direction. The conveying assembly includes a wire feeding seat 9, a front baffle 10 and a rear baffle 11 positioned one behind the other on the wire feeding seat 9, a wire feeding channel 12 penetrating through the front baffle 10 and the rear baffle 11, and a driving wheel 1 and a driven wheel 8 arranged side-by-side between the front baffle 10 and the rear baffle 11 and rotating relative to each other to clamp the conveyed wire. The needle shaft 5 has a feeding through-hole 13. One end of the feeding tube 7 is connected to the feeding channel 12 of the front baffle 10, and the other end is embedded in the rear end of the feeding through-hole 13. The needle head 6 includes a sleeve fitted onto the front end of the needle shaft 5, and a needle tube disposed on the sleeve and connected to the feeding through-hole 13. The inner diameter of the needle tube is 0.05–0.1 mm.

[0031] In operation, the driving wheel 1 and the driven wheel 8 rotate in opposite directions, clamping the ultrafine tungsten wire and passing it sequentially through the wire feeding channels 12 on the front baffle 10 and the rear baffle 11, into the feeding tube 7. After entering the feeding through-hole 13 of the needle shaft 5, it exits through the needle tube of the needle head 6. Because the inner diameter of the needle tube matches the diameter of the ultrafine tungsten wire, it can better guide the wire's feeding direction while feeding, avoiding the problem of the ultrafine wire deviating from its feeding direction due to fluctuations in feeding power caused by a larger outlet diameter of the feeding tube. Through this improvement, the finest wire diameter can reach 0.03mm, and repeated experiments showed consistent feed and retraction lengths, meeting the product process requirements.

[0032] In some specific embodiments, the mechanism includes a stepper motor 2, the output shaft of which passes through the bottom of the wire feeder 9 and is connected to the drive wheel 1. The stepper motor 2 slowly controls the wire feeding progress to ensure the stability of the ultrafine wire feeding.

[0033] In some specific embodiments, the mechanism includes a motor base plate 3 for supporting the stepper motor 2.

[0034] In some specific embodiments, the mechanism includes a needle shaft seat 4 for supporting the needle shaft 5. More specifically, a pressure cap is bolted to the needle shaft seat 4, and the needle shaft 5 is clamped and fixed between the pressure cap and the needle shaft seat 4, with the assembly strength between the pressure cap and the needle shaft seat 4 adjusted by the bolts.

[0035] In some specific embodiments, the motor base plate 3 is bolted to the needle shaft seat 4.

[0036] In some specific embodiments, the inner diameter of the needle is 0.1 mm.

[0037] In some specific embodiments, the outer diameter of the feeding tube 7 is 2.5 to 3.5 mm and the inner diameter is 0.2 to 0.8 mm; more specifically, the outer diameter of the feeding tube 7 is 3 mm and the inner diameter is 0.5 mm.

[0038] In some specific embodiments, the diameter of the wire is 0.03 mm.

[0039] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A wire feeding mechanism for ultrafine wires, wherein the diameter of the ultrafine wire is 0.02–0.04 mm, characterized in that, Including those arranged sequentially along the wire conveying direction: The conveying assembly includes a wire feeder (9), a front baffle (10) and a rear baffle (11) disposed on the wire feeder (9) one in front of the other, a wire feeding channel (12) passing through the front baffle (10) and the rear baffle (11), and a drive wheel (1) and a driven wheel (8) disposed side by side between the front baffle (10) and the rear baffle (11) and rotating relative to each other to clamp the wire being conveyed. Feeding tube (7); The needle shaft (5) has a feeding through hole (13) inside. One end of the feeding tube (7) is connected to the wire feeding channel (12) of the front baffle (10), and the other end is embedded in the rear end of the feeding through hole (13); and, The needle (6) includes a sleeve fitted on the front end of the needle shaft (5) and a needle tube disposed on the sleeve and connected to the feed through hole (13), wherein the inner diameter of the needle tube is 0.05 to 0.1 mm.

2. The ultra-fine wire feeding mechanism according to claim 1, characterized in that, The mechanism includes a stepper motor (2), the output shaft of which passes through the bottom of the wire feeder (9) and is connected to the drive wheel (1).

3. The ultra-fine wire feeding mechanism according to claim 2, characterized in that, The mechanism includes a motor base plate (3) for supporting the stepper motor (2).

4. The ultra-fine wire feeding mechanism according to claim 3, characterized in that, The mechanism includes a needle shaft seat (4) for carrying the needle shaft (5).

5. The ultra-fine wire feeding mechanism according to claim 4, characterized in that, A pressure cap is bolted onto the needle shaft seat (4), and the needle shaft (5) is clamped and fixed between the pressure cap and the needle shaft seat (4).

6. The ultra-fine wire feeding mechanism according to claim 4, characterized in that, The motor base plate (3) is bolted to the needle shaft seat (4).

7. The ultra-fine wire feeding mechanism according to claim 1, characterized in that, The inner diameter of the needle is 0.1 mm.

8. The ultra-fine wire feeding mechanism according to claim 1, characterized in that, The outer diameter of the feeding pipe (7) is 2.5-3.5 mm and the inner diameter is 0.2-0.8 mm.

9. The ultra-fine wire feeding mechanism according to claim 8, characterized in that, The outer diameter of the feeding tube (7) is 3 mm and the inner diameter is 0.5 mm.

10. The ultra-fine wire feeding mechanism according to claim 1, characterized in that, The diameter of the wire is 0.03 mm.

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