A polymer capillary drawing apparatus

Abstract

This invention relates to a polymer capillary drawing device, comprising a force sensing device, a heating device, a drawing device, a synchronous belt guide rail, and a lead screw slide. The force sensing device includes a force sensing device mounting plate fixed on the synchronous belt guide rail, a force sensor upper mounting block, a force sensor, an upper cover plate, a first hand-tightening screw, and a force sensor lower mounting block fixing the upper end of the polymer tube. The polymer tube is drawn, and the drawing speed is directly controlled by the rotation speed of a dual-axis motor, thus allowing the drawing of polymer capillaries of specific shapes and lengths according to actual needs. During the drawing process, the position of the heating device can be moved at any time, and the heating tube can be removed in time after drawing to avoid the residual heat of the heating tube melting the polymer capillary. Because the polymer tube is quantitatively heated and quantitatively drawn under controllable conditions, the breakage and blockage of the polymer capillary during the drawing process can be avoided, improving the minimum diameter and diameter uniformity of the drawn polymer capillary.

Description

Technical Field

[0001] This invention relates to the field of capillary drawing technology, and in particular to a polymer capillary drawing device. Background Technology

[0002] Polymer capillary drawing equipment is a device that uses thermal processing technology to draw polymers into materials with specific tubular structures. Polymer capillaries have broad application prospects in nanotechnology, biomedicine, and electronic devices. However, existing polymer capillaries are generally manufactured through extrusion molding processes. Limited by the processing precision of the mold and the extrusion swelling effect of the polymer, the smallest inner diameter of commercially available polymer capillaries is several hundred micrometers, which cannot meet the application requirements of scientific research and production. Therefore, it is necessary to perform secondary processing on commercial capillaries to shape them into tubes with an inner diameter of tens of micrometers.

[0003] Existing polymer drawing equipment can automate the mass production of polymer capillaries and wind them onto rollers. However, during the winding process, the processed tubes inevitably bend and undergo micro-deformation, easily forming creases that affect the uniformity of the internal diameter and overall quality. Furthermore, in practical applications, the wound capillaries need to be unwound from the rollers and cut, a complex process that increases time costs. Moreover, existing polymer drawing equipment typically uses rollers for feeding, which is prone to slippage between the rollers and the material at high speeds. Since the diameter of the polymer capillaries is directly affected by the drawing speed, this limits the minimum diameter of the produced capillaries. In addition, to study the drawing process of polymer capillaries made of different materials, the drawing equipment needs to easily control various drawing parameters, such as heating time, heating temperature, polymer tube diameter, drawing speed, and drawing force, to improve the polymer capillary drawing process. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a polymer capillary drawing device that allows for convenient adjustment of various drawing parameters, enabling the drawing of high-quality polymer capillaries with specific shapes and lengths.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a polymer capillary drawing device, comprising a force sensing device, a heating device, a pull-down device, a synchronous belt guide rail, and a lead screw slide; the force sensing device comprises a force sensing device mounting plate fixed on the synchronous belt guide rail, a force sensor upper mounting block, a force sensor, an upper cover plate, a first hand-tightening screw, and a force sensor lower mounting block; the heating device comprises a heating device mounting plate mounted on a heating device slider, a heating tube mounting bracket, a heating tube fixing bracket, a heating tube, a copper column, a temperature sensor, and a fan; the pull-down device comprises a pull-down device mounting plate mounted on the synchronous belt slider, a second hand-tightening screw, a lower cover plate, and a polymer tube fixing seat.

[0006] In a preferred embodiment: the force sensing device mounting plate is connected to the upper mounting block of the force sensor; the upper mounting block of the force sensor is connected to the right side of the force sensor; the lower mounting block of the force sensor is connected to the left side of the force sensor; and the upper cover plate is connected to the lower mounting block of the force sensor using a first hand-tightening screw.

[0007] In a preferred embodiment: the heating device mounting plate is connected to the heating tube mounting bracket; one end of the heating tube fixing bracket is connected to the heating tube mounting bracket, and the other end is connected to the heating tube by an interference fit; the fan is connected to the heating device mounting plate by a copper column; the temperature sensor is fixed on the heating device mounting plate, and the measuring point of the temperature sensor is aligned with the heating tube.

[0008] In a preferred embodiment: the heating tube is a hollow annular structure, and the through hole in the middle of the heating tube is used to insert a polymer tube.

[0009] In a preferred embodiment: the pull-down device mounting plate is connected to the polymer tube fixing seat; the lower cover plate is connected to the polymer tube fixing seat using a second hand-tightening screw.

[0010] In a preferred embodiment: the contact surfaces of the lower mounting block of the force sensor and the upper cover plate, and the polymer tube fixing seat and the lower cover plate are respectively provided with corresponding arc-shaped clamping grooves for pressing the polymer tube.

[0011] In a preferred embodiment: the heating device slider is connected to the lead screw slider and is driven by a servo motor to move on a synchronous belt guide rail.

[0012] In a preferred embodiment: the timing belt slider is connected to the timing belt and is driven by a dual-axis motor to move on the timing belt guide.

[0013] In a preferred embodiment: the servo motor is fixed on the lead screw slide and is connected to it via a third coupling; the lead screw slide is fixed on the back plate.

[0014] In a preferred embodiment: the dual-axis motor is fixed to the synchronous belt guide rail by a motor bracket; the front end of the dual-axis motor is connected to the synchronous belt drive through a first coupling, and the rear end is connected to the encoder through a second coupling; the synchronous belt guide rail is fixed to the back plate; the encoder is fixed to the base plate.

[0015] Compared with the prior art, the present invention has the following advantages: the polymer tube is stretched under controllable temperature conditions, and the stretching speed is directly controlled by the rotation speed of the dual-axis motor, so that polymer capillaries of specific shapes and lengths can be drawn according to actual needs; the position of the heating device can be moved at any time during the drawing process, and the heating tube can be removed in time when the drawing is completed to avoid the residual heat of the heating tube melting the polymer capillary; since the polymer tube is quantitatively heated and quantitatively stretched under controllable conditions, the polymer capillary can be prevented from breaking and clogging during the drawing process, thereby improving the minimum diameter and tube diameter uniformity of the drawn polymer capillary. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a polymer capillary drawing device as described in this invention patent;

[0017] Figure 2 This is a schematic diagram of the force sensing device described in this invention patent;

[0018] Figure 3 This is a schematic diagram of the heating device described in this invention patent;

[0019] Figure 4 This is a schematic diagram of the pull-down device described in this invention patent;

[0020] The reference numerals in the above figures are as follows: 1-Force sensing device; 2-Polymer tube; 3-Heating device; 4-Pull-down device; 5-Synchronous belt slider; 6-Synchronous belt guide rail; 7-Synchronous belt; 8-First coupling; 9-Motor bracket; 10-Dual-axis motor; 11-Second coupling; 12-Encoder; 13-Servo motor; 14-Third coupling; 15-Heating device slider; 16-Lead screw slider; 17-Lead screw slide table; 18-Back plate; 19-Base plate; 20-Force sensor mounting plate; 21-Upper mounting block for force sensor; 22-Force sensor; 23-Lower mounting block for force sensor; 24-Upper cover plate; 25-First hand-tightening screw; 26-Heating device mounting plate; 27-Heating tube mounting bracket; 28-Heating tube fixing bracket; 29-Heating tube; 30-Copper column; 31-Temperature sensor; 32-Fan; 33-Pull-down device mounting plate; 34-Second hand-tightening screw; 35-Lower cover plate; 36-Polymer tube fixing seat. Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application; as used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise; furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] This invention patent is for a polymer capillary drawing device, such as... Figure 1-4 As shown, the device includes a force sensing device 1, a heating device 3, a pull-down device 4, a synchronous belt guide rail 6, and a lead screw slide 17. The force sensing device 1 includes a force sensing device mounting plate 20 fixed on the synchronous belt guide rail 6, a force sensor upper mounting block 21, a force sensor 22, an upper cover plate 24, a first hand-tightening screw 25, and a force sensor lower mounting block 23. The heating device 3 includes a heating device mounting plate 26 mounted on the heating device slider 15, a heating tube mounting bracket 27, a heating tube fixing bracket 28, a heating tube 29, a copper column 30, a temperature sensor 31, and a fan 32. The pull-down device 4 includes a pull-down device mounting plate 33 mounted on the synchronous belt slider 5, a second hand-tightening screw 34, a lower cover plate 35, and a polymer tube fixing seat 36.

[0025] The force sensing device mounting plate 20 is connected to the upper mounting block 21 of the force sensor; the upper mounting block 21 of the force sensor is connected to the right side of the force sensor 22; the lower mounting block 23 of the force sensor is connected to the left side of the force sensor 22. This connection method conforms to the standard installation method of the force sensor 22 and is used to measure the tensile force when the polymer tube 2 is pulled; the upper cover plate 24 is connected to the lower mounting block 23 of the force sensor using the first hand-tightened screw 25.

[0026] The heating device mounting plate 26 is connected to the heating tube mounting bracket 27; one end of the heating tube fixing bracket 28 is connected to the heating tube mounting bracket 27, and the other end is connected to the heating tube 29 by interference fit; the heating tube 29 is a hollow ring structure, and the through hole in the middle of the heating tube 29 is used to insert and heat the polymer tube 2. During the heating process, the heating tube 29 and the polymer tube 2 are coaxial to ensure uniform heating; the fan 32 is connected to the heating device mounting plate 26 by copper pillar 30. The fan 32 blows air onto the heating tube 29 to achieve rapid cooling and improve production efficiency; the temperature sensor 31 is fixed on the heating device mounting plate 26, and the measuring point of the temperature sensor 31 is aligned with the heating tube 29 to measure the real-time temperature. By setting the heating temperature and heating time, the polymer tube 2 is prevented from breaking or becoming blocked during the drawing process.

[0027] The pull-down device mounting plate 33 is connected to the polymer tube fixing seat 36; the lower cover plate 35 is connected to the polymer tube fixing seat 36 by the second hand-tightening screw 34; the contact surfaces of the force sensor lower mounting block 23 and the upper cover plate 24, and the polymer tube fixing seat 36 and the lower cover plate 35 are respectively provided with corresponding arc-shaped clamping grooves for pressing the polymer tube 2. During installation, the first hand-tightening screw 25 and the second hand-tightening screw 34 are used to tighten and fix it; the cover plate and fixing seat with different diameter arc-shaped clamping grooves can be replaced to adapt to polymer tubes 2 with different diameters.

[0028] The heating device slider 15 is connected to the lead screw slider 16 and is driven by the servo motor 13 to move on the synchronous belt guide rail 6. This allows the heating position of the heating device 3 on the polymer tube 2 to be controlled during the drawing process. At the same time, the heating device 3 can be removed in time when the drawing is completed to prevent the residual heat of the heating tube 29 from melting the polymer tube 2. The servo motor 13 is fixed on the lead screw slide 17 and is connected to it through the third coupling 14. The lead screw slide 17 is fixed on the back plate 18.

[0029] The synchronous belt slider 5 is connected to the synchronous belt 7 and driven by the dual-axis motor 10 to move on the synchronous belt guide rail 6, thereby driving the pull-down device 4 to pull the polymer tube 2. The rotation speed of the dual-axis motor 10 directly affects the pulling speed of the polymer tube 2. By controlling the rotation speed of the dual-axis motor 10, polymer capillaries of a specific shape and length can be drawn. The dual-axis motor 10 is fixed on the synchronous belt guide rail 6 by the motor bracket 9. The front end of the dual-axis motor 10 is connected to the synchronous belt 7 through the first coupling 8, and the rear end is connected to the encoder 12 through the second coupling 11 for measuring the rotation speed of the dual-axis motor 10. The synchronous belt guide rail 6 is fixed on the back plate 18, and the encoder 12 is fixed on the base plate 19.

[0030] Working principle: The two ends of the polymer tube 2 are fixed to the lower mounting block 23 of the force sensor and the polymer fixing seat 36 respectively, and clamped and fixed using the first hand-tightening screw 25, the upper cover plate 24, the second hand-tightening screw 34, and the lower cover plate 35. The heating device 3 is moved to the position to be heated by controlling the servo motor 13. The heating tube 29 is controlled to heat the polymer tube 2. After the specified temperature and the set heating time, the dual-axis motor 10 is controlled to drive the pulling device 4 to pull the polymer tube 2 at a specified speed. After pulling, a polymer capillary of a specific shape can be obtained. In addition, the position of the heating device 3 can be adjusted as needed to achieve multiple pulling of the polymer tube 2, thereby obtaining a polymer capillary with a smaller diameter.

[0031] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A polymer capillary drawing device, characterized in that: The device includes a force sensing device, a heating device, a pull-down device, a synchronous belt guide rail, and a lead screw slide. The force sensing device includes a force sensing device mounting plate fixed on the synchronous belt guide rail, a force sensor upper mounting block, a force sensor, an upper cover plate, a first hand-tightening screw, and a force sensor lower mounting block. The heating device includes a heating device mounting plate mounted on a heating device slider, a heating tube mounting bracket, a heating tube fixing bracket, a heating tube, a copper column, a temperature sensor, and a fan. The pull-down device includes a pull-down device mounting plate mounted on the synchronous belt slider, a second hand-tightening screw, a lower cover plate, and a polymer tube fixing seat. The force sensing device mounting plate is connected to the upper mounting block of the force sensor; the upper mounting block of the force sensor is connected to the right side of the force sensor; the lower mounting block of the force sensor is connected to the left side of the force sensor; the upper cover plate is connected to the lower mounting block of the force sensor using a first hand-tightened screw. The heating device mounting plate is connected to the heating tube mounting bracket; one end of the heating tube fixing bracket is connected to the heating tube mounting bracket, and the other end is connected to the heating tube by an interference fit; the fan is connected to the heating device mounting plate by a copper column; the temperature sensor is fixed on the heating device mounting plate, and the measuring point of the temperature sensor is aligned with the heating tube. The heating tube has a hollow ring structure, and the through hole in the middle of the heating tube is used to insert a polymer tube. The pull-down device mounting plate is connected to the polymer tube fixing seat; the lower cover plate is connected to the polymer tube fixing seat using a second hand-tightening screw; The contact surfaces between the lower mounting block of the force sensor and the upper cover plate, and between the polymer tube fixing seat and the lower cover plate, are respectively provided with corresponding arc-shaped clamping grooves for pressing the polymer tube. The heating device slider is connected to the lead screw slider and is driven by a servo motor to move on a synchronous belt guide rail; The timing belt slider is connected to the timing belt and is driven by a dual-axis motor to move on the timing belt guide rail.

2. The polymer capillary drawing equipment according to claim 1, characterized in that: The servo motor is fixed on the lead screw slide and is connected to it via a third coupling; the lead screw slide is fixed on the back plate.

3. The polymer capillary drawing equipment according to claim 1, characterized in that: The dual-axis motor is fixed to the synchronous belt guide rail using a motor bracket; the front end of the dual-axis motor is connected to the synchronous belt drive through a first coupling, and the rear end is connected to the encoder through a second coupling; the synchronous belt guide rail is fixed to the back plate; the encoder is fixed to the base plate.

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