Heating head of needle pulling instrument

Abstract

The utility model relates to a heating head of a needle pulling instrument, and belongs to the technical field of external fertilization micromanipulation tube manufacturing equipment. The heating head of the needle pulling instrument comprises an insulating bottom plate, a heating ring plate, a sliding copper bar, a lower sliding copper bar, a copper pressing plate A and a copper pressing plate B, two groups of guide slide rails are symmetrically arranged on the insulating bottom plate; a connecting through hole is formed in the insulating bottom plate on the inner side of the guide sliding rail; an upper sliding copper bar and a lower sliding copper bar are sequentially arranged on the guide sliding rail in a sliding manner; the upper sliding copper bar and the lower sliding copper bar are connected with locking screws. The locking screws are in intermittent abutting connection with the insulating bottom plate. A copper pressing plate A is installed on the upper sliding copper bar through a press-fitting screw. The heating head of the needle pulling instrument is compact in structure and ingenious in design, solves the problem that the production defect rate is high when an existing needle pulling instrument adopts an electric heating wire for heating, and is particularly suitable for machining and using of an in-vitro fertilization micromanipulation tube.

Description

Technical Field

[0001] The utility model relates to a heating head of a needle pulling instrument, belonging to the technical field of in vitro fertilization micromanipulation tube manufacturing equipment. Background Art

[0002] The in vitro fertilization micromanipulation tube is one of the important auxiliary tools for test-tube babies. It is a glass tube that is heated and then drawn into shape in the middle. Existing needle pullers, such as the one disclosed in the utility model patent with authorization announcement number CN220432621U, can meet the needs of in vitro fertilization micromanipulation tube processing and use to a certain extent. However, it adopts a technical solution of heating the glass tube with a heating resistance wire. When adopting this solution, since the heating resistance wire is a ring-shaped coil structure, there is still a certain gap between the resistance wires. Due to the existence of the gap, when the glass tube is heated, there is still a certain difference in the heating conditions of the heating position of the glass tube corresponding to the gap and the heating position corresponding to the resistance wire. As a result, the products produced by the existing needle puller have a high defect rate. Therefore, it is necessary to develop a heating head to solve the above problems existing in the heating method of the existing needle puller. Summary of the Invention

[0003] The purpose of the utility model is to provide a heating head for a pin pulling instrument with a compact structure and ingenious design to solve the problem of high production defect rate in the existing heating method of the pin pulling instrument.

[0004] The technical solution of the utility model is:

[0005] A heating head of a needle pulling instrument includes an insulating base plate, a heating ring plate, a sliding copper bar, a lower sliding copper bar, a copper pressure plate A and a copper pressure plate B; it is characterized in that: two sets of guide rails are symmetrically installed on the insulating base plate; a connecting through hole is provided on the insulating base plate inside the guide rails; an upper sliding copper bar and a lower sliding copper bar are slidably installed on the guide rails in sequence; the upper sliding copper bar and the lower sliding copper bar are both connected with locking screws; the locking screws are intermittently contacted with the insulating base plate; a copper pressure plate A is installed on the upper sliding copper bar by a press-fit screw; a copper pressure plate B is installed on the lower sliding copper bar by a press-fit screw, and a heating ring plate is installed between the copper pressure plate A and the copper pressure plate B.

[0006] The guide slide rail is provided with a clamping slide groove.

[0007] Both sides of the upper sliding copper bar and the lower sliding copper bar are provided with clamping slideways; the upper sliding copper bar and the lower sliding copper bar are both slidably connected with the guide rails through the clamping slideways and the clamping slide grooves.

[0008] The inner side of the upper sliding copper bar is provided with an electrode connection hole A; the outer side of the upper sliding copper bar is provided with a supporting copper platform A; and a copper pressure plate A is installed on the supporting copper platform A through press-fit screws.

[0009] The outer side of the lower sliding copper bar is connected to a connecting copper rod; a supporting copper platform B is provided on the outer side of the connecting copper rod; a copper pressure plate B is installed on the supporting copper platform B through a press-fit screw; a conductive copper rod is provided on the inner side of the connecting copper rod; an electrode connection hole B is provided at one end of the conductive copper rod.

[0010] The heating ring plate is formed by folding a whole metal plate in half, with the middle portion being bent into a circular ring structure.

[0011] One end of the heating ring plate is clamped between the supporting copper platform A and the copper pressing plate A, and the other end is clamped between the supporting copper platform B and the copper pressing plate B.

[0012] The advantages of the present invention are:

[0013] The heating head of the needle pulling instrument has a compact structure and ingenious design. It can heat the glass tube through the overall annular structure of the heating ring plate, thereby solving the problem of high production defect rate when the existing needle pulling instrument uses electric heating wire for heating. It is particularly suitable for the needs of in vitro fertilization micromanipulation tube processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model without the heating ring plate;

[0016] Figure 3 for Figure 2 Schematic diagram of the structure after removing the upper sliding copper busbar;

[0017] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 5 This is a schematic diagram of the structure of the heating ring plate of the utility model;

[0019] Figure 6 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0021] In the figure: 1. Insulating base plate; 2. Guide rail; 3. Connecting through hole; 4. Upper sliding copper busbar; 5. Lower sliding copper busbar; 6. Locking screw; 7. Press-fit screw; 8. Copper pressure plate A; 9. Copper pressure plate B; 10. Heating ring plate; 11. Snap-fitting groove; 12. Snap-fitting slide; 13. Electrode connecting hole A; 14. Support copper platform A; 15. Connecting copper rod; 16. Support copper platform B; 17. Conductive copper rod; 18. Electrode connecting hole B. DETAILED DESCRIPTION

[0022] The heating head of the needle pulling instrument includes an insulating base plate 1, a heating ring plate 10, a sliding copper bar, a lower sliding copper bar 5, a copper pressing plate A8 and a copper pressing plate B9 (see the attached manual). Figure 1 and 2 ).

[0023] Two sets of guide rails 2 are symmetrically installed on the insulating base plate 1 (see the appendix of the manual). Figure 1 and 2 ). A snap-fitting groove 11 is provided on the guide rail 2. The upper sliding copper bar 4 and the lower sliding copper bar 5 are slidably mounted on the guide rail 2 in sequence. Snap-fitting slideways 12 are provided on both sides of the upper sliding copper bar 4 and the lower sliding copper bar 5; the upper sliding copper bar 4 and the lower sliding copper bar 5 are slidably connected to the guide rail 2 through the snap-fitting slideways 12 and the snap-fitting groove 11 (see the appendix of the manual). Figure 2 、 3 and 4).

[0024] The upper sliding copper bar 4 and the lower sliding copper bar 5 are both connected with locking screws 6; the locking screws 6 are intermittently connected with the insulating bottom plate 1 (see the appendix of the manual). Figure 2 、 3 The purpose of providing the locking screw 6 is that when the locking screw 6 is tightened, the upper sliding copper bar 4 and the lower sliding copper bar 5 can be fixedly mounted on the insulating base plate 1, and when the locking screw 6 is loosened, the upper sliding copper bar 4 and the lower sliding copper bar 5 can move up and down on the guide rail 2.

[0025] The inner side of the upper sliding copper bar 4 is provided with an electrode connection hole A13; the outer side of the upper sliding copper bar 4 is provided with a supporting copper platform A14; a copper pressure plate A8 is installed on the supporting copper platform A14 by means of a press-fit screw 7 (see the appendix of the manual). Figure 2 and 7 ).

[0026] The insulating bottom plate 1 inside the guide rail 2 is provided with a connecting through hole 3 (see the appendix of the manual). Figure 3 and 6 The purpose of providing the connecting through hole 3 is to enable the external powered electrode to pass through the connecting through hole 3 and connect to the electrode connection hole A13 during assembly.

[0027] The lower sliding copper bar 5 is connected to the outside of a connecting copper rod 15. A supporting copper platform B16 is installed on the outside of the connecting copper rod 15. A copper pressure plate B9 is mounted on the supporting copper platform B16 via a press-fit screw 7. A conductive copper rod 17 is installed on the inside of the connecting copper rod 15. An electrode connection hole B18 is provided at one end of the conductive copper rod 17. During assembly, an external energized electrode can be connected to the conductive copper rod 17 through the electrode connection hole B18.

[0028] A heating ring plate 10 is installed between the copper pressure plate A8 and the copper pressure plate B9. The heating ring plate 10 is made of a whole metal plate folded in half, with the middle part bent into a circular ring structure. One end of the heating ring plate 10 is clamped between the support copper platform A14 and the copper pressure plate A8, and the other end is clamped between the support copper platform B16 and the copper pressure plate B9 (see the attached instructions). Figure 1 and 7 ).

[0029] The heating head of the needle pulling instrument forms a closed loop between the upper sliding copper bar 4, the heating ring plate 10 and the lower sliding copper bar 5; when current passes through the heating ring plate 10, it will generate heat under the action of the current to heat the glass tube inside it and help the needle pulling instrument complete the needle pulling process.

[0030] The purpose of designing the upper sliding copper bar 4 and the lower sliding copper bar 5 to be slidably mounted on the insulating base plate 1 is to enable the upper and lower positions of the upper sliding copper bar 4 and the lower sliding copper bar 5 to be adjusted during operation, thereby adjusting the upper and lower positions of the heating ring plate 10, thereby making the needle pulling instrument adaptable to the needs of processing and using various models of in vitro fertilization micromanipulation tubes.

[0031] The heating head of the needle pulling instrument has a compact structure and ingenious design. It can heat the glass tube through the overall annular structure of the heating ring plate 10, thereby solving the problem of high production defect rate when the existing needle pulling instrument uses electric heating wire for heating. It is particularly suitable for the needs of in vitro fertilization micromanipulation tube processing.

Claims

1. A heating head for a needle drawing instrument, comprising an insulating base plate (1), a heating ring plate (10), a sliding copper bar, a lower sliding copper bar (5), a copper pressing plate A (8) and a copper pressing plate B (9); characterized in that: Two sets of guide rails (2) are symmetrically mounted on the insulating base plate (1); a connecting through hole (3) is provided on the insulating base plate (1) on the inner side of the guide rails (2); an upper sliding copper bar (4) and a lower sliding copper bar (5) are slidably mounted on the guide rails (2) in sequence; both the upper sliding copper bar (4) and the lower sliding copper bar (5) are connected with locking screws (6); the locking screws (6) are intermittently contact-connected with the insulating base plate (1); a copper pressure plate A (8) is mounted on the upper sliding copper bar (4) by means of a press-fit screw (7); a copper pressure plate B (9) is mounted on the lower sliding copper bar (5) by means of a press-fit screw (7); a heating ring plate (10) is mounted between the copper pressure plate A (8) and the copper pressure plate B (9).

2. The heating head of the needle pulling instrument according to claim 1, characterized in that: The guide rail (2) is provided with a snap-fitting slot (11).

3. The heating head of the needle pulling instrument according to claim 2, characterized in that: Both sides of the upper sliding copper bar (4) and the lower sliding copper bar (5) are provided with a snap-fitting slideway (12); the upper sliding copper bar (4) and the lower sliding copper bar (5) are both slidably connected to the guide rail (2) through the snap-fitting slideway (12) and the snap-fitting slot (11).

4. The heating head of the needle pulling instrument according to claim 1, characterized in that: The upper sliding copper busbar (4) is provided with an electrode connection hole A (13) on the inner side; a supporting copper platform A (14) is provided on the outer side of the upper sliding copper busbar (4); and a copper pressure plate A (8) is mounted on the supporting copper platform A (14) via a press-fit screw (7).

5. The heating head of the needle pulling instrument according to claim 1, characterized in that: The outer side of the lower sliding copper bar (5) is connected to a connecting copper rod (15); a supporting copper platform B (16) is provided on the outer side of the connecting copper rod (15); a copper pressure plate B (9) is installed on the supporting copper platform B (16) by means of a press-fit screw (7); a conductive copper rod (17) is provided on the inner side of the connecting copper rod (15); an electrode connection hole B (18) is provided at one end of the conductive copper rod (17).

6. The heating head of the needle pulling instrument according to claim 1, characterized in that: The heating ring plate (10) is formed by folding a whole metal plate in half, with the middle portion being bent into a circular ring structure.

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