Tool for correcting position degree of insulating ring of electric detonator

Abstract

The utility model belongs to the technical field of initiating explosive devices, and relates to a tool for correcting the position degree of an insulating ring of an electric detonator. The tool comprises a calibrator and an exploder outer shell. The calibrator comprises a grasping section, a positioning section and a correcting section; according to the tool, the inner wall of the outer shell of the exploder serves as a reference surface, the positioning section is matched with the metal shell, the position of the insulating ring is corrected, and the problem that in the insulating ring assembling process, the coaxiality of an inner hole of a charging chamber and a mold is poor is solved. The end face of the positioning face can be pressed on the upper end face of the insulating ring, the coaxiality of the insulating ring and the shell is adjusted, meanwhile, the insulating ring is pressurized and cured, the insulating ring does not float due to curing of curing glue, the insulating ring is fixed and prevented from shifting, the insulating ring is pressed in place, the coaxiality and the position degree of the insulating ring are ensured, and the production efficiency is improved. Accidental burning and explosion caused by eccentricity of the insulating ring in the explosive pressing process are avoided, and a foundation is laid for batch production and an automatic explosive pressing production line.

Description

Technical Field

[0001] The utility model belongs to the technical field of pyrotechnics and relates to a tool for correcting the position of an insulating ring of an electric blaster. Background Art

[0002] The charge that comes into direct contact with the transducer in the electric detonator is generally a highly sensitive detonator. During the charging process, the product needs to be positioned in a mold to complete the pressurization. The chamber of the starting charge of the electric detonator is generally called an insulating ring. It is made of non-metallic materials such as ceramics and organic glass and is processed into a ring structure through molding or machining. The insulating ring is not only the chamber of the starting charge, but also can isolate the bridge from the shell, ensuring the insulation and antistatic properties of the bridge shell. In addition, the insulating ring made of ceramic material has good thermal conductivity. When a safe current of 1A is applied, it can quickly transfer the heat generated by the bridge to the shell, forming a thermal balance system and ensuring non-ignition performance. The integrity of the insulating ring structure is the key to ensuring the insulation performance, antistatic performance, and 1A1W5min non-ignition performance of the electric detonator.

[0003] Because the insulating ring is typically made of ceramic, it has low dimensional accuracy and poor positioning. During the process of pressing the charge using a metal punch, the insulating ring often eccentrically misaligns the inner hole of the charge chamber with the die. This causes the sharp corners of the ceramic insulating ring to be crushed during the pressurization process, and the broken ceramic can be pressed into the sensitive explosive, causing accidental explosions. Currently, accidental explosions caused by insulating ring misalignment during the pressurization process of electric detonators are a common occurrence, and this is a key issue that hinders the implementation of group-mold pressurization of detonators.

[0004] Therefore, in order to adapt to automated charge pressing, it is necessary to fundamentally eliminate the problem of accidental explosion during the detonator charge pressing process, protect the insulating ring structure intact, and thus ensure the safety performance of the electric detonator. It is necessary to design a tooling for correcting the position of the insulating ring of the electric detonator. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the utility model provides a correction tool suitable for the position of the insulating ring of an electric detonator, which corrects the position of the insulating ring during the assembly process and fixes the insulating ring by curing glue to prevent it from shifting, thereby avoiding accidental explosion problems caused by eccentricity of the insulating ring during the pressing process.

[0006] The technical solution adopted in this utility model is:

[0007] An electric detonator insulating ring position calibration tool comprises a calibrator 1 and an detonator outer shell 2;

[0008] The calibrator 1 includes a gripping section 1-1, a positioning section 1-2 and a correction section 1-3; the gripping section 1-1 is a cylinder of no less than two orders, and the cylinders of each order are cocentric and have decreasing radius from the top downward. The gripping section 1-1 is used for gripping, and the uppermost cylinder is used to block the gripping external parts for easy force bearing; the positioning section 1-2 is connected to the bottom of the gripping section 1-1, and is a cylinder cocentric with the gripping section 1-1. The diameter b of the positioning section 1-2 matches the inner diameter of the detonator outer shell 2 and serves as a reference surface for calibrating the insulating ring; the correction section 1-3 is connected to the bottom of the positioning section 1-2, and is a cylinder cocentric with the gripping section 1-1. The center of the correction section 1-3 is provided with an empty groove passing through the center for matching the center line of the insulating ring. The diameter a of the correction section 1-3 matches the inner diameter of the insulating ring and serves as another positioning surface to match the inner wall of the insulating ring;

[0009] The detonator outer shell 2 is a cylindrical shell, which is sleeved on the outer side of the lower part of the calibrator 1.

[0010] Preferably, the minimum diameter of the gripping section 1 - 1 is not less than 10 mm, and the height is not less than 5 mm.

[0011] Preferably, the gripping section 1-1 is a second-order cylinder.

[0012] Preferably, a through slot is provided in the center of the gripping section 1-1 and the positioning section 1-2 at the same level as the correction section 1-3.

[0013] Preferably, the coaxiality deviation of the gripping section 1-1, the positioning section 1-2 and the correction section 1-3 is less than 0.015 mm.

[0014] Preferably, the coaxiality deviation between the calibrator 1 and the initiator outer shell 2 is less than 0.015 mm.

[0015] Preferably, the upper tolerance of the outer diameter of the positioning section 1 - 2 is +0.05 mm, which is consistent with the lower tolerance of the inner diameter of the initiator outer shell 2 , so as to avoid the calibrator 1 being stuck when being pulled out due to an overtight fit.

[0016] Preferably, the upper tolerance of the outer diameter of the calibration section 1-3 +0.05mm is consistent with the lower tolerance of the inner diameter of the insulating ring, so as to avoid the insulating ring being pulled out together when the calibrator 1 is pulled out due to an overly tight fit.

[0017] Preferably, the calibrator 1 and the detonator outer shell 2 are both made of metal materials.

[0018] The beneficial effects of the utility model are:

[0019] (1) The utility model is a tool for correcting the position of the insulating ring of an electric detonator. It is suitable for electric detonator products. The tool is used to adjust the coaxiality of the insulating ring and the housing of the electric detonator during the bonding process of the insulating ring.

[0020] (2) The electric detonator insulating ring position correction tool of the present invention can keep the insulating ring intact during the electric detonator pressing process, avoid the situation where the inner wall of the insulating ring is crushed during the pressing process, and improve the anti-static performance of the product.

[0021] (3) The position correction tool for the insulating ring of the electric detonator of the present invention realizes the pressurized curing of the insulating ring, optimizes the process flow of the electric detonator, prevents the position of the insulating ring from floating due to the curing of the curing glue, fixes the insulating ring to prevent it from shifting, enables the insulating ring to be pressed into place, and ensures the coaxiality and position of the insulating ring.

[0022] (IV) The electric detonator insulating ring position correction tool of the present invention ensures the consistency of the electric detonator charge structure, laying the foundation for mass production and automated charge pressing production line.

[0023] (5) The electric detonator insulating ring position correction tool of the present invention ensures the position accuracy of the insulating ring bonding, enables the charge punch to smoothly enter the inner hole of the charging chamber, and avoids accidental explosion during the charge pressing process, which may cause harm to personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a schematic diagram of the structure of a calibrator of an insulating ring position correction tool for an electric blaster.

[0025] Figure 2 The utility model is a structural diagram of the outer shell of the electric initiator insulating ring position correction tool.

[0026] Figure 3 It is a schematic diagram of the insulating ring structure of the electric detonator. DETAILED DESCRIPTION

[0027] Example 1

[0028] The electric initiator insulation ring position correction tooling structure provided in the embodiment is as follows Figures 1-2 As shown, the insulating ring structure of the electric initiator is as follows Figure 3 shown.

[0029] An electric detonator insulating ring position calibration tool comprises a calibrator 1 and an detonator outer shell 2;

[0030] The calibrator 1 includes a gripping section 1-1, a positioning section 1-2 and a correction section 1-3; the gripping section 1-1 is a second-order cylinder, with each level of cylinders being cocentric and having decreasing radius from the top downward. The gripping section 1-1 is used for gripping, and the uppermost cylinder is used to block the gripping external components for easy force bearing; the positioning section 1-2 is connected to the bottom of the gripping section 1-1 and is a cylinder cocentric with the gripping section 1-1. The diameter b of the positioning section 1-2 matches the inner diameter of the detonator outer shell 2 and serves as a reference surface for calibrating the insulating ring; the correction section 1-3 is connected to the bottom of the positioning section 1-2 and is a cylinder cocentric with the gripping section 1-1. The center of the correction section 1-3 is provided with an empty groove passing through the center for matching the center line of the insulating ring. The diameter a of the correction section 1-3 matches the inner diameter of the insulating ring and serves as another positioning surface for matching the inner wall of the insulating ring; the centers of the gripping section 1-1 and the positioning section 1-2 are provided with a through empty groove at the same horizontal position as the correction section 1-3.

[0031] The detonator outer shell 2 is a cylindrical shell, which is sleeved on the outer side of the lower part of the calibrator 1.

[0032] The gripping section 1 - 1 has a minimum diameter of 20 mm and a height of 10 mm.

[0033] During processing, the coaxiality of the calibrator 1 and the detonator outer shell 2, as well as the gripping section 1-1, the positioning section 1-2 and the correction section 1-3 is less than 0.015.

[0034] The upper tolerance of the outer diameter of the positioning section 1-2 is +0.05mm, which is consistent with the lower tolerance of the inner diameter of the detonator outer shell 2. The upper tolerance of the outer diameter of the correction section 1-3 is +0.05mm, which is consistent with the lower tolerance of the inner diameter of the insulating ring, to avoid the calibrator 1 from getting stuck or the insulating ring being pulled out together due to over-tight fit.

[0035] The tooling can realize that the electric detonator can be matched with a metal shell with high precision to correct the position of the insulating ring, thereby avoiding accidental explosion caused by eccentricity of the insulating ring during the charge pressing process.

[0036] The tool has been tested on 1,500 electric igniters and has proven effective in correcting the position of the insulating rings. Previously, when gluing the insulating rings, 10 out of every 500 rounds would be eccentric, resulting in a 2% scrap rate. With the tool, the insulating ring gluing pass rate has reached 100%, ensuring the coaxiality and position of each insulating ring.

Claims

1. A tool for correcting the position of the insulating ring of an electric blaster, characterized in that: It includes a calibrator (1) and an initiator outer shell (2); The calibrator (1) comprises a gripping section (1-1), a positioning section (1-2) and a calibration section (1-3); the gripping section (1-1) is a cylinder of no less than two orders, with the cylinders of each order being cocentric from the top downward and the radius decreasing successively; the gripping section (1-1) is used for gripping, and the uppermost cylinder is used for blocking the gripping outer parts to facilitate force bearing; the positioning section (1-2) is connected to the bottom of the gripping section (1-1) and is a cylinder cocentric with the gripping section (1-1). The positioning section (1-2) has a diameter b that matches the inner diameter of the initiator outer shell (2) and serves as a reference surface for calibrating the insulating ring; the calibration section (1-3) is connected below the positioning section (1-2) and is a cylinder having the same center as the gripping section (1-1); a slot passing through the center of the calibration section (1-3) is provided at the center for matching the center line of the insulating ring; the diameter a of the calibration section (1-3) matches the inner diameter of the insulating ring and serves as another positioning surface for matching the inner wall of the insulating ring; The detonator outer shell (2) is a cylindrical shell, which is sleeved on the outer side of the lower part of the calibrator (1).

2. The electric blaster insulating ring position calibration tool according to claim 1, characterized in that: The minimum diameter of the gripping section (1-1) is not less than 10 mm, and the height is not less than 5 mm.

3. The electric initiator insulating ring position calibration tool according to claim 1, characterized in that: The gripping section (1-1) is a second-order cylinder.

4. The electric initiator insulating ring position calibration tool according to claim 1, characterized in that: A through slot at the same horizontal position as the correction section (1-3) is provided at the center of the gripping section (1-1) and the positioning section (1-2).

5. The electric initiator insulating ring position calibration tool according to claim 1, characterized in that: The coaxiality deviation of the gripping section (1-1), the positioning section (1-2) and the correction section (1-3) is less than 0.

015.

6. The electric initiator insulating ring position calibration tool according to claim 1, characterized in that: The coaxiality deviation between the calibrator (1) and the initiator outer shell (2) is less than 0.

015.

7. The electric initiator insulating ring position calibration tool according to claim 1, characterized in that: The upper tolerance of the outer diameter of the positioning section (1-2) is +0.05mm, which is consistent with the lower tolerance of the inner diameter of the initiator outer shell (2), so as to avoid the calibrator (1) from getting stuck when being pulled out due to an overtight fit.

8. The electric initiator insulating ring position calibration tool according to claim 1, characterized in that: The upper tolerance of the outer diameter of the calibration section (1-3) is +0.05 mm, which is consistent with the lower tolerance of the inner diameter of the insulating ring, so as to avoid the insulating ring being pulled out together when the calibrator (1) is pulled out due to an overtight fit.

9. The electric initiator insulating ring position calibration tool according to claim 1, characterized in that: The calibrator (1) and the detonator outer shell (2) are both made of metal materials.

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