Vertical drawing instrument

Abstract

The utility model provides a vertical drawing instrument, which relates to the technical field of glass capillary production and comprises a main body, a display is arranged on one side of the front of the main body, a first heat adjusting knob is mounted on the front of the main body close to the bottom of the display, and a second heat adjusting knob is mounted on one side of the front of the main body close to the first heat adjusting knob. A mode selection knob is installed at the bottom, close to the first heat adjusting knob, of the front face of the main body, a starting reset button is installed on the side, close to the mode selection knob, of the front face of the main body, and a protection cover is installed on the other side of the front face of the main body. The required needle shape is drawn by adjusting the heating temperature, the heating area and the pulling force, the width of the heating area is changed by replacing heating wires with different turns, the heating temperature is controlled by adjusting a heating knob, and four weights can be adjusted and increased or decreased in real time in the heating process, namely zero to four weights can be installed to adjust the pulling force.

Description

Technical Field

[0001] The utility model relates to the technical field of glass capillary production, in particular to a vertical drawing instrument. Background Art

[0002] Glass capillaries are made of polytetrafluoroethylene dispersed resin at room temperature with organic solvent as auxiliary agent, and then dried and sintered. According to the size of the tube diameter, it can be divided into capillary tubes and HOSE tubes. The inner diameter of HOSE tubes is >4mm, and the inner diameter of capillaries is <4mm. The existing glass capillaries have high chemical stability: they can withstand all strong acids, including aqua regia, hydrofluoric acid, concentrated hydrochloric acid, nitric acid, oleum, organic acids, etc., strong alkalis, strong oxidants, reducing agents and various organic solvents, and are very suitable for high-purity chemical feeding.

[0003] Glass capillaries are widely used in various biochemical experiments, but the following problems exist in the entire production process: the existing glass capillary production equipment has a complex structure, large volume, and complex operation when heating the raw materials. It also requires manual intervention for control, which is very inconvenient. Therefore, a vertical drawing instrument is needed to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problems that the existing glass capillary production equipment has a complex structure, a large volume, and a complicated operation when heating raw materials, and requires too much manual intervention for control, which is very inconvenient, and proposes a vertical drawing instrument.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a vertical drawing instrument, including a main body, a display is electrically connected to one side of the front of the main body, a first heat adjustment knob is installed on the bottom of the front of the main body near the display, a second heat adjustment knob is installed on the side of the front of the main body near the first heat adjustment knob, a mode selection knob is installed on the bottom of the front of the main body near the first heat adjustment knob, a start reset button is installed on the side of the front of the main body near the mode selection knob, and a protective cover is installed on the other side of the front of the main body.

[0006] Preferably, needle clamping blocks are installed at the top and bottom of the protective cover, and an upper slider and a heating wire are provided between the top and bottom needle clamping blocks. The heating wire is installed on the upper slider, and a transport protection metal rod passes through the middle of the heating wire. The heating wire wraps the middle of the transport protection metal rod, and a heating module stop scale block is installed in the middle of the protective cover, and the heating wire is located in the middle of the heating module stop scale block.

[0007] Preferably, an upper slider induction plate is installed in the protective cover near the bottom of the upper needle clamping block, and an upper slider adjustment induction plate is installed in the protective cover on one side near the bottom of the upper slider induction plate.

[0008] Preferably, a lower slider is clamped on the front side of the main body near the bottom of the protective cover, and a lower slider induction plate is installed on one side of the lower slider.

[0009] Preferably, the front side of the top needle clamp block is provided with a glass tube upper fixing screw, and the front side of the bottom needle clamp block is provided with a glass tube lower fixing screw.

[0010] Preferably, the front side of the main body is threadedly locked with one or more of a counterweight, a lightweight counterweight, and a weighted counterweight near the bottom of the lower slider.

[0011] Preferably, a lower slider adjustment sensing plate is installed on the front side of the main body near the back side of the counterweight block, a blocking block is provided on the front side of the main body near the bottom of the lower slider adjustment sensing plate, and a lower slider stop scale block is installed on the front side of the lower slider adjustment sensing plate.

[0012] Preferably, a position sensor is installed on the top of one side inside the main body.

[0013] Preferably, the bottom bolt near the position sensor in the main body is connected with an upper slider moving screw, a transmission gear is installed in the main body near the bottom end of the upper slider moving screw, an upper slider driving motor is installed in the main body near the bottom of the transmission gear, and a blocking block driving electromagnet is installed in the main body near the bottom of the upper slider driving motor.

[0014] Beneficial Effects

[0015] In the utility model, the entire drawing process uses glass capillaries as raw materials, and the required needle type is drawn by adjusting the heating temperature, heating area and pulling force. The heating wire with different numbers of turns is replaced to change the width of the heating area, the heating knob is adjusted to control the heating temperature (it can also be adjusted in real time during the heating process), and four weights are added or subtracted (that is, 0 to 4 weights can be installed) to adjust the pulling force, and the adjustment mode can achieve one-step or two-step drawing.

[0016] In the utility model, during the drawing process, the entire vertical controller has convenient parameter setting, simple operation process, and real-time parameter display, which can be clearly and intuitively adjusted. At the same time, heating can also be adjusted online, that is, the glass capillary has been placed in the heating wire and the heating parameters can be adjusted as needed. The setting of the acrylic dust cover can protect the operator's experiment and reduce the influence of humidity, dust and the like on the repeatability of the experiment. The real-time running time display can intuitively show the drawing time of the glass capillary. In the two-step drawing method, the heating module automatically runs according to the setting without manual intervention, which solves the problem that the temperature of the existing glass capillary production equipment is difficult to control when heating the raw materials and requires too much manual intervention for control, which is very inconvenient.

[0017] Compared with the traditional horizontal drawing instrument, the vertical drawing instrument of the utility model is small in size, cheap and easy to operate; it can meet the routine use of most customers by finely controlling the heating temperature and several simple gravity drawing methods; the instrument is mainly suitable for drawing glass capillaries into glass microelectrodes or high-toughness injection needles without special requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the utility model;

[0019] Figure 2 It is a side view of the overall structure of the utility model;

[0020] Figure 3 This is a diagram of the internal structure of the protective cover of the utility model;

[0021] Figure 4 This is the internal structure diagram of the utility model.

[0022] Legend:

[0023] 1. Display; 2. First heat adjustment knob; 3. Second heat adjustment knob; 4. Mode selection knob; 5. Start reset button; 6. Weighted counterweight; 7. Lightweight counterweight; 8. Fixing screw under glass tube; 9. Fixing screw on glass tube; 10. Stop scale block for lower slider; 11. Block block; 12. Lower slider; 13. Stop scale block for heating module; 14. Heating wire; 15. Protective cover; 16. Transport protection metal rod; 17. Main body; 18. Needle clamp block; 19. Counterweight; 20. Upper slider induction plate; 21. Upper slider adjustment induction plate; 22. Lower slider induction plate; 23. Lower slider adjustment induction plate; 24. Position sensor; 25. Upper slider motion screw; 26. Transmission gear; 27. Upper slider drive motor; 28. Block block drive electromagnet; 30. Upper slider. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0025] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings. Specific embodiment one:

[0027] Reference Figure 1-4 A vertical drawing instrument includes a main body 17, a display 1 is arranged on one side of the front of the main body 17, a first heat adjustment knob 2 is installed on the bottom of the main body 17 near the display 1, a second heat adjustment knob 3 is installed on the side of the main body 17 near the first heat adjustment knob 2, a mode selection knob 4 is installed on the bottom of the main body 17 near the first heat adjustment knob 2, a start reset button 5 is installed on the side of the main body 17 near the mode selection knob 4, and a protective cover 15 is installed on the other side of the front of the main body 17. It should be understood that the vertical drawing instrument of the utility model also has a control circuit for receiving control signals of knobs, sensors, etc., and can control displays, drive motors, etc. These are common technical means in the field of electricity, and the utility model does not describe them in detail.

[0028] The top and bottom of the protective cover 15 are both equipped with needle clamping blocks 18. An upper slider 30 and a heating wire 14 are arranged between the needle clamping blocks 18 at the top and bottom. The heating wire 14 is installed on the upper slider 30. The middle of the heating wire 14 is penetrated by a transportation protection metal rod 16. The heating wire 14 wraps the middle of the transportation protection metal rod 16. The middle of the protective cover 15 is equipped with a heating module stop scale block 13. The heating wire 14 is located in the middle of the heating module stop scale block 13. It is particularly noted that the transportation protection metal rod 16 is only used during transportation. When the instrument is used normally, a glass capillary will be used to replace this rod. The heating wire 14 is in a state of surrounding the glass capillary in space. The glass capillary is the raw material. The vertical drawing instrument is used to draw the glass capillary into the shape of a needle tip required in the experiment.

[0029] An upper slider induction plate 20 is installed at the bottom of the protective cover 15 near the upper needle clamping block 18 , and an upper slider adjustment induction plate 21 is installed at one side of the protective cover 15 near the bottom of the upper slider induction plate 20 .

[0030] The front of the main body 17 is clamped with the lower slider 12 near the bottom of the protective cover 15, and a lower slider sensor plate 22 is installed on one side of the lower slider 12. The front of the top needle clamping block 18 is installed with the glass tube upper fixing screw 9, and the front of the bottom needle clamping block 18 is installed with the glass tube lower fixing screw 8.

[0031] The front of the main body 17 is slidably connected to a counterweight 19 near the bottom of the lower slider 12. The top between the counterweights 19 includes a light counterweight 7, and the bottom between the counterweights 19 includes a heavy counterweight 6. The counterweights 19 have two types: light counterweights 7 and heavy counterweights 6. The various counterweights are selected by the customer according to the drawing requirements. The thread locking is adopted when assembling the weights. The various counterweights selected in this embodiment and their setting methods can be changed according to actual conditions in other embodiments.

[0032] A lower slider adjustment sensing plate 23 is installed on the front side of the main body 17 near the back side of the counterweight block 19 , a blocking block 11 is provided on the front side of the main body 17 near the bottom of the lower slider adjustment sensing plate 23 , and a lower slider stop scale block 10 is installed on the front side of the lower slider adjustment sensing plate 23 .

[0033] A position sensor 24 is installed at the top of one side of the main body 17, and an upper slider moving screw 25 is bolted to the bottom of the main body 17 near the position sensor 24, and a transmission gear 26 is installed at the bottom of the upper slider moving screw 25 in the main body 17, and an upper slider driving motor 27 is installed at the bottom of the main body 17 near the transmission gear 26, and a blocking block driving electromagnet 28 is installed at the bottom of the upper slider driving motor 27 in the main body 17. The upper slider driving motor 27 drives the upper slider moving screw 25 to rotate through the transmission gear 26, thereby driving the upper slider 30 to move up and down. In the single-step drawing procedure, the upper slider 30, the blocking block 11 and the blocking block driving electromagnet 28 are stationary. Only when switching to double-step drawing, the upper slider 30, the blocking block 11 and the blocking block driving electromagnet 28 will participate in the action. Specific embodiment 2:

[0035] Reference Figure 1-4 In this device, the display 1 is used to display the status and parameters of the heating process, the first heat adjustment knob 2 is used to adjust the heat of the one-step control, the second heat adjustment knob 3 is used to adjust the heat of the second step control in the two-step control process, the mode selection knob 4 is mainly used to switch the pulling mode, and the start reset button 5 can be used to start control and reset.

[0036] There are four layers in the counterweight block 19 group, of which the lower two layers are weighted counterweight blocks 6, and the upper two layers are light counterweight blocks 7. The upper screws 9 and the lower screws 8 of the glass tube are equipped with suitable buffer pads to prevent the glass tube from being damaged.

[0037] In the double-step drawing mode, the stop scale block 10 of the lower slider is adjusted to control the first drawing distance, wherein the blocking block 11 will block the position of the first drawing fall, and the lower slider 12 and the counterweight block 19 group together constitute the pulling power source, and the pulling power can be freely adjusted as needed. At the same time, in the double-step drawing mode, the heating module stop scale block 13 is adjusted to control the moving distance of the heating wire 14. Generally, the scale of this scale block is adjusted to half of the stop scale block 10 of the lower slider.

[0038] The heating wire 14 provides a heat source for drawing. The heating wire is divided into three-loop and four-loop heating wires, which can be customized for special usage conditions. The protective cover 15 on the front of the main body 17 can reduce the impact of air flow on the heating effect of the heating wire 14, and at the same time prevent burns caused by the operator accidentally touching the heating wire 14 during the heating process. The transportation protection metal rod 16 is used when the entire equipment is not working to fix the position of the lower slider 12 to protect the lower slider 12 from free collision during the transportation of the instrument.

[0039] During the drawing process, the position of the upper slider is controlled by adjusting the upper slider adjustment induction plate 21. The upper slider induction plate 20 is the induction plate for the upper slider to return to the zero position. The lower slider 12 is lifted to the position of the lower slider induction plate 22. The first step stop position in the two-step drawing procedure is controlled by adjusting the lower slider adjustment induction plate 23. Normally, this scale is twice the scale of the upper slider adjustment induction plate 21. The glass capillary will form a molten state after being heated. The lower slider 12 uses gravity to pull the glass capillary to a certain shape. The heating part of the heating wire 14 is spiral. The heating temperature and heating time are controlled by the heating drive plate.

[0040] During the entire two-step drawing process, the blocking block drives the electromagnet 28 to retract, and the blocking block 11 is pulled to the blocking position through the lever principle. After heating, the glass tube is melted, and the lower slider 12 equipped with the counterweight 19 automatically falls down and stops when it falls to the position of the blocking block 11. The upper slider drives the motor 27 to move the upper slider and the heating module to the melting part of the glass tube through the transmission gear 26 and the upper slider motion screw 25, and then the blocking block drives the electromagnet 28 to extend and push the blocking block 11 to the air avoidance position. After that, the heating wire 14 is reheated. After a period of time, the glass capillary is melted for the second time, and the lower slider 12 equipped with the counterweight 19 automatically falls until it falls completely to the bottom.

[0041] The working principle of the vertical controller is as follows: using glass capillaries as raw materials, the required needle type is drawn by adjusting the heating temperature, heating area and pulling force. The width of the heating area is changed by replacing the heating wire 14 with different numbers of turns, and the heating knob is adjusted to control the heating temperature (it can also be adjusted in real time during the heating process). The pulling force is adjusted by adding or subtracting four weights (that is, 0 to 4 weights can be installed), and the mode is adjusted to achieve one-step or two-step drawing. Specific embodiment three:

[0043] Reference Figure 1-4 Before drawing the glass tube, first open the protective cover 15, loosen the fixing screws 8 and 9 on the glass tube, remove the transportation protection metal rod 16, and then insert the glass tube so that the middle part of the glass tube is at the position of the heating wire 14, then tighten the fixing screws 8 and 9 on the glass tube, and finally turn on the power switch. The display 1 displays the current drawing state and parameters, and the corresponding state and parameters are adjusted as needed.

[0044] During the first step of the glass tube drawing operation:

[0045] (1) Turn the mode selector knob to Hot Test 1;

[0046] (2) Press the start reset button 5 to observe the brightness of the heating wire 14, and adjust the first heat adjustment knob 2 to a suitable brightness of the heating wire 14;

[0047] (3) In the rotation mode, turn the knob to single-step pulling (ignore the first two steps after becoming proficient in the operation);

[0048] (4) After installing the glass tube, press the start reset button 5 to start heating and pulling the glass tube;

[0049] (5) After the heating wire 14 slowly turns red, the glass tube is melted, and the lower slider 12 equipped with the counterweight 19 automatically falls until it completely falls to the bottom;

[0050] (6) After drawing is completed, open the protective cover 15, and be careful not to touch the heating wire 14 to avoid burns;

[0051] (7) Unscrew the fixing screws 8 at the bottom of the glass tube and 9 at the top of the glass tube respectively, and take out the drawn glass needle.

[0052] During the second step of the glass tube drawing operation:

[0053] (1) Turn the mode selector knob to Hot Test 1;

[0054] (2) Press the start reset button 5 to observe the brightness of the heating wire 14, and adjust the first heat adjustment knob 2 to a suitable brightness of the heating wire 14;

[0055] (3) Turn the mode selector knob to Heat 2 Test;

[0056] (4) Press the start reset button 5 to observe the brightness of the heating wire 14, and adjust the second heat adjustment knob 3 to a suitable brightness of the heating wire 14;

[0057] (5) In the rotation mode, turn the knob to double-step drawing (after becoming proficient in the operation, ignore the first four steps); (6) After installing the glass tube, press the start reset button 5 to start heating and drawing the glass tube; (7) After the heating wire 14 slowly turns red, the glass tube is melted, and the lower slider 12 equipped with the counterweight 19 automatically falls down and stops when it falls to the stop block 11;

[0058] (8) The heating module descends to the melting point of the glass tube, and then the blocking block 11 is retracted;

[0059] (9) The heating wire 14 is reheated, and after a period of time, the heating wire 14 turns red again, and the glass tube is melted for the second time. The lower slider 12 equipped with the counterweight 19 automatically falls until it completely falls to the bottom;

[0060] (10) After drawing is completed, open the protective cover 15, and be careful not to touch the heating wire 14 to avoid burns;

[0061] (11) Unscrew the fixing screws 8 at the bottom of the glass tube and 9 at the top of the glass tube respectively, and take out the drawn glass needle.

[0062] In summary:

[0063] 1. During the drawing process, the upper slider adjustment induction plate 21 is adjusted to control the moving position of the upper slider. The upper slider induction plate 20 is the induction plate for the upper slider to return to zero position. The lower slider 12 is lifted to the position of the lower slider induction plate 22. The first step stop position in the two-step drawing procedure is controlled by adjusting the lower slider adjustment induction plate 23. Usually, this scale is twice the scale of the upper slider adjustment induction plate 21. The glass capillary will form a molten state after being heated. The lower slider 12 uses gravity to pull the glass capillary to a certain shape. The heating part of the heating wire 14 is spiral. The heating temperature and heating time are controlled by the heating drive plate.

[0064] 2. During the entire two-step drawing process, the blocking block drives the electromagnet 28 to retract, and the blocking block 11 is pulled to the blocking position through the lever principle. After heating, the glass tube is melted, and the lower slider 12 equipped with the counterweight 19 automatically falls down and stops when it falls to the position of the blocking block 11. The upper slider drives the motor 27 to move the upper slider and the heating module to the melting part of the glass tube through the transmission gear 26 and the upper slider motion screw 25, and then the blocking block drives the electromagnet 28 to extend and push the blocking block 11 to the air avoidance position. After that, the heating wire 14 is reheated. After a period of time, the glass capillary is melted for the second time, and the lower slider 12 equipped with the counterweight 19 automatically falls until it falls completely to the bottom.

[0065] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0066] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A vertical drawing apparatus, comprising a main body (17), characterized in that: A display (1) is provided on one side of the front of the main body (17); a first heat adjustment knob (2) is installed on the bottom of the front of the main body (17) near the display (1); a second heat adjustment knob (3) is installed on the side of the front of the main body (17) near the first heat adjustment knob (2); a mode selection knob (4) is installed on the side of the front of the main body (17) near the bottom of the first heat adjustment knob (2); a start reset button (5) is installed on the side of the front of the main body (17) near the mode selection knob (4); ) is installed on the other side of the front side, and the top and bottom of the protective cover (15) are installed with clamping needle blocks (18). An upper slider (30) and a heating wire (14) are provided between the top and bottom of the clamping needle blocks (18). The heating wire (14) is installed on the upper slider (30). A transport protection metal rod (16) passes through the middle of the heating wire (14). The heating wire (14) wraps the middle of the transport protection metal rod (16). A heating module stop scale block (13) is installed in the middle of the protective cover (15).

2. A vertical drawing apparatus according to claim 1, characterized in that: The heating wire (14) is located in the middle of the heating module stop scale block (13), and an upper slider induction plate (20) is installed in the protective cover (15) near the bottom of the upper clamping needle block (18).

3. A vertical drawing apparatus according to claim 2, characterized in that: An upper slider adjustment sensing plate (21) is installed on one side of the interior of the protection cover (15) close to the bottom of the upper slider sensing plate (20).

4. A vertical drawing apparatus according to claim 3, characterized in that: A lower slider (12) is clamped on the front of the main body (17) near the bottom of the protective cover (15), and a lower slider induction plate (22) is installed on one side of the lower slider (12).

5. A vertical drawing apparatus according to claim 3, characterized in that: The front side of the top needle clamping block (18) is provided with a glass tube upper fixing screw (9), and the front side of the bottom needle clamping block (18) is provided with a glass tube lower fixing screw (8).

6. A vertical drawing apparatus according to claim 4, characterized in that: The front side of the main body (17) is threadedly locked with one or more of a counterweight (19), a light counterweight (7), and a heavy counterweight (6) near the bottom of the lower slider (12).

7. A vertical drawing apparatus according to claim 6, characterized in that: A lower slider adjustment sensing plate (23) is installed on the front side of the main body (17) near the back side of the counterweight block (19), a blocking block (11) is provided on the front side of the main body (17) near the bottom of the lower slider adjustment sensing plate (23), and a lower slider stop scale block (10) is installed on the front side of the lower slider adjustment sensing plate (23).

8. A vertical drawing apparatus according to claim 1, characterized in that: A position sensor (24) is installed on the top of one side of the main body (17).

9. A vertical drawing apparatus according to claim 8, characterized in that: An upper slider moving screw rod (25) is bolted to the bottom of the main body (17) near the position sensor (24); a transmission gear (26) is installed at the bottom of the upper slider moving screw rod (25) in the main body (17); an upper slider driving motor (27) is installed at the bottom of the transmission gear (26) in the main body (17); and a blocking block driving electromagnet (28) is installed at the bottom of the upper slider driving motor (27) in the main body (17).

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