Tube drawing device for long conical quartz capillary tube

Abstract

The utility model discloses a long conical quartz capillary tube drawing device which comprises a rod feeding assembly, a heating assembly, a traction assembly, a diameter measuring assembly and a cutting assembly, the conveying end of the rod feeding assembly directly faces one opening of the heating assembly, the traction assembly is arranged at the position of the other opening of the heating assembly, and the diameter measuring assembly is arranged at the position of the other opening of the heating assembly. The diameter measuring assembly and the cutting assembly are sequentially arranged at an outlet of the traction assembly, the quartz tube is driven by the traction assembly to move forwards, due to the fact that the quartz tube is in a heated state, the quartz tube is stretched by traction force to form a cone shape, and the stretched cone-shaped tube can be cooled and shaped after being separated from the heating assembly. And the subsequent quartz tube is driven to continuously stretch. The long conical quartz capillary tube drawing device provided by the utility model has the effect of directly drawing a quartz mother tube to form a conical capillary tube.

Description

Technical Field

[0001] This utility model relates to the field of quartz tube production technology, and in particular to a long conical quartz capillary tube drawing device. Background Technology

[0002] Tapered quartz capillaries are widely used in optical devices, medical probes, and jet analysis. Current technologies for producing tapered quartz tubes typically use graphite or laser heat sources to draw short capillaries into tapered shapes, which presents the following problems: 1. Insufficient tapering length: Existing tapering machines typically produce tapered capillaries only 10-15 cm long, making it impossible to manufacture longer tapered capillaries; 2. Proportional changes in the outer and inner diameters of the tapered tube cause the outer diameter at the smallest inner diameter to decrease simultaneously, affecting structural strength and making it prone to breakage during use; 3. High manufacturing cost: The tapering process is lengthy and cannot solve the problem of mass production. Summary of the Invention

[0003] To address the aforementioned problems, a long conical quartz capillary tube drawing device is provided, aiming to solve the problems existing in the prior art.

[0004] The specific technical solution is as follows:

[0005] A long conical quartz capillary tube drawing device includes a rod feeding assembly, a heating assembly, a traction assembly, a diameter measuring assembly, and a cutting assembly. The feeding end of the rod feeding assembly is directly opposite one opening of the heating assembly, the traction assembly is located at another opening of the heating assembly, and the diameter measuring assembly and the cutting assembly are sequentially located at the outlet of the traction assembly.

[0006] The aforementioned long conical quartz capillary tube drawing device also has the following feature: the traction component includes a base plate, a first driving part and a second driving part, the first driving part and the second driving part are sequentially spaced on the base plate, the first driving part is disposed on the side close to the heating component, and the second driving part is close to the diameter measuring component.

[0007] The beneficial effects of the above scheme are: the substrate is used to support the first driving part and the second driving part, and the first driving part and the second driving part can drive the quartz tube in two stages to stretch it into a tapered tube.

[0008] The aforementioned long conical quartz capillary tube drawing device also has the following features: the first driving part includes two sliding bodies, two transmission shafts, two traction wheels, two driving components, and two positioning components. A sliding groove is formed on the top surface of the substrate near the heating assembly. The two sliding bodies are disposed in the sliding groove. The two sliding bodies are respectively connected to the side wall of the sliding groove through the two positioning components. The positioning components can drive the sliding bodies to slide left and right along the sliding groove. A cavity is formed in the sliding body. The driving component is disposed in the cavity. The lower end of the transmission shaft extends into the cavity and is connected to the driving component. The middle part of the transmission shaft is rotatably connected to the sliding body. The upper end of the transmission shaft extends to the outside of the sliding body. The traction wheels are disposed on the upper end of the transmission shaft. When the two sliding bodies approach each other, the two traction wheels can approach each other to control the diameter of the quartz tube passing between the two traction wheels.

[0009] The beneficial effects of the above scheme are as follows: by using the first driving part and the second driving part to drive the quartz tube while limiting the diameter of the quartz tube, the diameter of the quartz tube between the first driving parts is larger, and the diameter of the quartz tube between the second driving parts is smaller, so that the quartz tube forms a cone shape.

[0010] The aforementioned long conical quartz capillary tube drawing device also has the following features: the positioning component includes a threaded rod and a knob; one end of the threaded rod extends from the side of the substrate through its side plate into the slide groove; the side of the slide body has a threaded hole adapted to the threaded rod; one end of the threaded rod extends into the threaded hole and the two are threadedly connected; the other end of the threaded rod is located outside the substrate; the knob is located at the other end of the threaded rod; rotating the knob can drive the threaded rod to rotate, thereby driving the slide body to move left and right along the slide groove.

[0011] The beneficial effects of the above scheme are: turning the knob can drive the threaded rod to rotate. Since the threaded rod is threadedly connected to the threaded hole, the slide body can move left and right along the slide groove to adjust the distance between the two traction wheels.

[0012] The aforementioned long conical quartz capillary tube drawing device also has the following features: the traction wheel has a wheel-shaped structure, and an annular groove is provided on its outer ring sidewall to adapt to different tube diameters; the traction wheel and the drive shaft are detachably connected.

[0013] The beneficial effects of the above scheme are: the annular groove allows the outer ring sidewall of the traction wheel to fit into the quartz tube, which can fully exert the traction effect on the quartz tube while limiting the diameter of the quartz tube.

[0014] The aforementioned long conical quartz capillary tube drawing device also has the feature that the edges of the grooves on the top surface of the substrate are all marked with scale markings.

[0015] The beneficial effect of the above scheme is that it allows operators to intuitively judge the distance between the two traction wheels.

[0016] In summary, the beneficial effects of this scheme are:

[0017] In the long conical quartz capillary tube drawing device provided by this utility model, the quartz tube is driven forward by a traction component. Since the quartz tube is in a heated state, it is stretched into a conical shape by the traction force. After the stretched conical tube is separated from the heating component, it cools and solidifies, and then drives subsequent quartz tubes to continue being stretched. The long conical quartz capillary tube drawing device provided by this utility model has the effect of directly drawing a quartz mother tube into a conical capillary tube. Attached Figure Description

[0018] Figure 1 This is a front view structural schematic diagram of the long conical quartz capillary tube drawing device of this utility model;

[0019] Figure 2 This is a bottom view of the structure of the long conical quartz capillary tube drawing device of this utility model.

[0020] Figure descriptions: 1. Rod feeding assembly; 2. Heating assembly; 3. Base plate; 4. Slider; 5. Drive shaft; 6. Traction wheel; 7. Threaded rod; 8. Knob; 9. Diameter measuring assembly; 10. Cutting assembly. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] The present invention will be further described below with reference to specific embodiments, but this is not intended to limit the present invention.

[0024] Figure 1 This is a front view schematic diagram of the long conical quartz capillary tube drawing device of this utility model. Figure 2 This is a bottom view of the structure of the long conical quartz capillary tube drawing device of this utility model, as shown in the figure. Figure 1 and Figure 2As shown, the long conical quartz capillary tube drawing device provided in this embodiment includes a rod feeding assembly 1, a heating assembly 2, a traction assembly, a diameter measuring assembly 9, and a cutting assembly 10. The conveying end of the rod feeding assembly 1 is directly opposite one opening of the heating assembly 2, the traction assembly is located at the other opening of the heating assembly 2, and the diameter measuring assembly 9 and the cutting assembly 10 are sequentially located at the outlet of the traction assembly.

[0025] It should be noted that, Figure 1 The tube-pulling device shown is placed vertically. Since the quartz tube is in a vertical position, there will be no problem of axial displacement due to gravity after heating and softening.

[0026] In the above embodiment, the traction assembly includes a substrate 3, a first driving part and a second driving part. The first driving part and the second driving part are sequentially spaced on the substrate 3. The first driving part is disposed on the side close to the heating assembly 2, and the second driving part is close to the diameter measuring assembly 9.

[0027] In the above embodiment, the first driving unit includes two sliding bodies 4, two transmission shafts 5, two traction wheels 6, two driving components, and two positioning components. A sliding groove is formed on the top surface of the substrate 3 near the heating component 2. The two sliding bodies 4 are disposed in the sliding groove. The two sliding bodies 4 are respectively connected to the side wall of the sliding groove through the two positioning components. The positioning components can drive the sliding bodies 4 to slide left and right along the sliding groove. A cavity is formed in the sliding body 4. The driving component is disposed in the cavity. The lower end of the transmission shaft 5 extends into the cavity and is connected to the driving component for transmission. The middle part of the transmission shaft 5 is rotatably connected to the sliding body 4. The upper end of the transmission shaft 5 extends to the outside of the sliding body 4. The traction wheels 6 are disposed on the upper end of the transmission shaft 5. When the two sliding bodies 4 approach each other, the two traction wheels 6 can approach each other to control the diameter of the quartz tube passing between the two traction wheels 6.

[0028] In the above embodiment, the positioning component includes a threaded rod 7 and a knob 8. One end of the threaded rod 7 extends from the side of the substrate 3 through its side plate into the slide groove. The side of the slide body 4 is provided with a threaded hole that matches the threaded rod 7. One end of the threaded rod 7 extends into the threaded hole and the two are threadedly connected. The other end of the threaded rod 7 is located outside the substrate 3. The knob 8 is located at the other end of the threaded rod 7. Rotating the knob 8 can drive the threaded rod 7 to rotate, which can drive the slide body 4 to move left and right along the slide groove.

[0029] In the above embodiment, the traction wheel 6 has a wheel-shaped structure, and an annular groove is provided on its outer ring sidewall to adapt to different pipe diameters. The traction wheel 6 and the drive shaft 5 are detachably connected.

[0030] In the above embodiments, the edges of the grooves on the top surface of the substrate 3 are provided with scale markings.

[0031] It should be noted that the rod feeding assembly 1, heating assembly 2, diameter measuring assembly 9, and cutting assembly 10 are all existing technologies, and therefore will not be described in detail.

[0032] The working principle is as follows: the feeding assembly 1 drives the quartz mother tube to feed, causing it to change linearly from 5 mm / min to 0.5 mm / min and then back to 5 mm / min. The heating assembly 2 heats and softens the quartz mother tube. The traction assembly causes the stretched quartz tube to change linearly from 0.1 m / min to 2 m / min and then back to 0.1 m / min. The stretching speed is precisely controlled by an external computer, achieving a drawing cycle of approximately 2 minutes, a cone length of 1 m, and a cone outer diameter that uniformly changes from 3 mm to 0.3 mm. The diameter measuring assembly 9 monitors the inner and outer diameters of the capillary tube online and transmits the data to the external computer. The external computer uses the inner and outer diameter data as feedback to control the feeding speed and traction speed in real time. The inner and outer diameter data also need to be transmitted to the cutting assembly 10. The cutting assembly 10 automatically cuts the tube when it reaches a periodic peak or trough based on the inner and outer diameter data.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the content of the present utility model specification should be included within the protection scope of the present utility model.

Claims

1. A long conical quartz capillary tube drawing device, characterized in that: It includes a bar feeding assembly (1), a heating assembly (2), a traction assembly, a diameter measuring assembly (9), and a cutting assembly (10). The feeding end of the bar feeding assembly (1) is directly opposite one opening of the heating assembly (2). The traction assembly is located at the other opening of the heating assembly (2). The diameter measuring assembly (9) and the cutting assembly (10) are sequentially located at the outlet of the traction assembly.

2. The long conical quartz capillary tube drawing device according to claim 1, characterized in that: The traction assembly includes a base plate (3), a first driving part and a second driving part, the first driving part and the second driving part are sequentially spaced on the base plate (3), the first driving part is disposed on the side close to the heating assembly (2), and the second driving part is close to the diameter measuring assembly (9).

3. The long conical quartz capillary tube drawing device according to claim 2, characterized in that: The first driving unit includes two sliding bodies (4), two drive shafts (5), two traction wheels (6), two driving components, and two positioning components. A groove is formed on the top surface of the base plate (3) near the heating assembly (2). The two sliding bodies (4) are disposed in the groove. The two sliding bodies (4) are respectively connected to the side wall of the groove through the two positioning components. The positioning components can drive the sliding bodies (4) to slide left and right along the groove. A cavity is formed in the sliding body (4). The driving component is disposed in the cavity. The lower end of the drive shaft (5) extends into the cavity and is connected to the driving component. The middle part of the drive shaft (5) is rotatably connected to the sliding body (4). The upper end of the drive shaft (5) extends to the outside of the sliding body (4). The traction wheels (6) are disposed on the drive shaft (5). At the upper end, when the two sliding bodies (4) approach each other, the two traction wheels (6) can approach each other to control the diameter of the quartz tube passing between the two traction wheels (6).

4. The long conical quartz capillary tube drawing device according to claim 3, characterized in that: The positioning component includes a threaded rod (7) and a knob (8). One end of the threaded rod (7) extends from the side of the base plate (3) through its side plate into the groove. The side of the slide body (4) is provided with a threaded hole that matches the threaded rod (7). One end of the threaded rod (7) is inserted into the threaded hole and the two are threaded together. The other end of the threaded rod (7) is located outside the base plate (3). The knob (8) is located at the other end of the threaded rod (7). Rotating the knob (8) can drive the threaded rod (7) to rotate, which can drive the slide body (4) to move left and right along the groove.

5. The long conical quartz capillary tube drawing device according to claim 3, characterized in that: The traction wheel (6) has a wheel-shaped structure and an annular groove on its outer ring sidewall to accommodate different pipe diameters. The traction wheel (6) and the drive shaft (5) are detachably connected.

6. A long conical quartz capillary tube drawing device according to claim 4 or 5, characterized in that: The edges of the grooves on the top surface of the substrate (3) are all marked with scale markings.

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