Lead automatic penetrating drug core tooling

Abstract

The utility model discloses a lead automatic threading medicine core's tool belongs to the pyrotechnics manufacturing technical field, and this tool includes workbench, rear end cap row mould, rear end cap handling feeding mechanism, threading mechanism, detection and off line mechanism and PLC control system, and rear end cap handling feeding mechanism realizes the clamping and conveying of rear end cap and lead through pneumatic clamping jaw and X Y axle guide rail, and threading mechanism utilizes Z axle module and gear and rack drive mechanism cooperation drive pull line pole threading, and detection and off line mechanism complete state detection and off line through photoelectric sensor and off line claw, and PLC control system coordinates each mechanism action. This tool realizes the full automation operation of lead threading into medicine core, solves the low efficiency of traditional manual operation, high security risk, the problem of poor positioning accuracy, has high degree of automation, high positioning accuracy, production efficiency improvement is obvious and so on advantage, can satisfy the pyrotechnics production automation, high efficiency and the safe demand, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of pyrotechnics manufacturing technology, specifically to a tooling for automatically threading a lead wire through a propellant core. Background Technology

[0002] In the manufacturing process of pyrotechnics, the key step is to pass the fuse through the propellant core.

[0003] Traditional processes involve manual operation, requiring the front end cap and fuse to be placed on a mold plate before the fuse is manually threaded through the explosive core. This method has significant drawbacks: firstly, manual operation is inefficient and cannot meet the efficiency requirements of modern large-scale production; secondly, operators frequently come into contact with hazardous materials, posing extremely high safety risks. Furthermore, traditional processes have a low level of automation, failing to adapt to the trend of pyrotechnics production towards automation, efficiency, and safety, necessitating technological innovation to upgrade the process.

[0004] Therefore, it is necessary to design a tooling system that automatically guides the lead wire through the core to solve the problems mentioned above. Utility Model Content

[0005] This invention aims to solve the technical problems of low efficiency, high safety risks, and insufficient automation in the existing pyrotechnic fuse threading process. It provides a special tooling that can automatically thread the fuse into the core, thereby improving production efficiency, reducing safety hazards, and ensuring threading accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The tooling for automatically threading lead through the core includes a worktable, a rear end mold, a rear end conveying and feeding mechanism, a threading mechanism, a detection and de-threading mechanism, and a PLC control system.

[0008] The rear end cap assembly is set on the workbench for placing the rear end cap and lead wire;

[0009] The rear end cap conveying and feeding mechanism is set on the workbench and is used to clamp the rear end cap and lead wire on the mold plate and transport them to the designated work station.

[0010] The threading mechanism is set on the workbench and is used to automatically hook the lead wire and thread it into the drug core;

[0011] The detection and wire removal mechanism is set on the workbench and is used to detect the wire insertion status and remove the wire from the wire hook.

[0012] As a preferred embodiment of this utility model, the rear end cap conveying and feeding mechanism includes a rear end cap clamping mechanism and an XY axis guide rail;

[0013] The rear end cap clamping mechanism is used to clamp the rear end cap and the lead wire;

[0014] The XY axis guide rails are fixed to the worktable and are used to drive the rear end clamping mechanism to move in the plane.

[0015] As a preferred embodiment of this utility model, the threading mechanism includes a Z-axis module, a gear and rack transmission mechanism, a drive device, and a pull rod;

[0016] The drive device drives the pull rod to move up and down along the Z-axis module through a gear and rack transmission mechanism.

[0017] The end of the pull rod is equipped with a lead hook for hooking the lead and threading it through the drug core.

[0018] As a preferred embodiment of this utility model, the detection and de-threading mechanism includes a photoelectric sensor and a de-threading claw;

[0019] The photoelectric sensor is used to detect whether the pull rod has reached the predetermined position and the state of the lead wire insertion.

[0020] The detaching claw is used to pull the lead wire away from the lead hook.

[0021] As a preferred embodiment of this utility model, the XY axis guide rail adopts a linear guide rail structure, and the rear end cap clamping mechanism is a pneumatic gripper.

[0022] In a preferred embodiment of this utility model, the driving device is a servo motor, and the servo motor is electrically connected to the PLC control system.

[0023] As a preferred embodiment of this utility model, the workbench is provided with adjustable supports at the four corners of its bottom, including threaded lifting rods and level bulbs, for adjusting the height and levelness of the tooling.

[0024] As a preferred embodiment of this utility model, the PLC control system adopts a Siemens S7-200SMART PLC, equipped with a touch screen human-machine interface, and coordinates and controls the timing of the actions of the rear end cap handling and feeding mechanism, the threading mechanism, and the detection and unthreading mechanism.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] In this invention, the tooling for automatically passing the lead wire through the drug core achieves the following effects:

[0027] 1. High degree of automation, improving production efficiency.

[0028] This utility model achieves full automation of the entire process from lead wire clamping, transportation, threading to detection and de-threading through the coordinated work of the rear end cap conveying and feeding mechanism, threading mechanism, detection and de-threading mechanism, etc.; no manual intervention is required for threading operation, which greatly shortens the production cycle. Compared with traditional manual operation, production efficiency is significantly improved, which can meet the needs of large-scale production.

[0029] 2. High positioning accuracy ensures product quality.

[0030] The threading mechanism employs a Z-axis module and a rack and pinion transmission mechanism to improve positioning accuracy, solving the problem of inaccurate positioning in traditional manual operation. The XY-axis guide rails of the rear end cap conveying and feeding mechanism adopt a linear guide rail structure with a positioning accuracy of ±0.2mm, ensuring the precise positioning of the lead wire and pull rod. This guarantees the accuracy and consistency of the lead wire insertion into the core, improving product quality and increasing the product qualification rate. Through the coordinated work of various mechanisms, the complex operation that originally required manual completion is transformed into an automated process, overcoming the technical difficulties of low efficiency and high safety risks in existing technologies. This represents a significant improvement in the lead wire insertion process for pyrotechnic products, with outstanding substantive features and remarkable progress.

[0031] 3. Reduce security risks

[0032] Operators do not need to directly contact hazardous materials; they can remotely control the tooling operation through a PLC control system. This effectively avoids potential safety hazards that may be encountered during manual operation and improves the safety of the production process.

[0033] 4. Highly adaptable and can be integrated with automated production lines.

[0034] Equipped with a PLC control system using a Siemens S7-200SMART PLC and a touch screen human-machine interface, it can coordinate and control the timing of actions of various mechanisms; it can display the equipment operating status, fault alarms and production data in real time, and supports parameter setting, allowing seamless integration with modern automated production lines; the bottom of the workbench is equipped with an adjustable support, which can adjust the height and level of the tooling, making it suitable for the installation needs of different production sites and highly adaptable. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0036] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0037] Figure 3 This is a top view of the structure of this utility model.

[0038] In the diagram: 1. Workbench; 2. Rear head conveying and feeding mechanism; 21. Rear head clamping mechanism; 22. XY axis guide rail; 3. Threading mechanism; 31. Z-axis module; 32. Gear and rack transmission mechanism; 33. Drive device; 34. Wire pull rod; 4. Detection and wire removal mechanism; 5. Adjustable support. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0040] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0041] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0042] Unless otherwise defined, 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 invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] Please see Figure 1-3 The present invention provides the following technical solution:

[0044] Example 1

[0045] In this embodiment, a tooling for automatically threading the lead through the core is provided, the structure of which is as follows: Figure 1-3 As shown, it includes a workbench 1, a rear head mold assembly, a rear head conveying and feeding mechanism 2, a threading mechanism 3, a detection and unthreading mechanism 4, and a PLC control system. Among them:

[0046] Workbench 1 is an aluminum alloy frame with adjustable supports 5 at the four corners of the bottom (including threaded lifting rods and level bulbs, such as...). Figure 2 As shown, the level of the worktable can be adjusted to within ±0.5mm by rotating the lifting rod to ensure the stability of the tooling;

[0047] The rear end cap assembly adopts a modular design, with V-shaped grooves on the surface that match the rear end cap. Elastic silicone pads are embedded in the grooves, which can both fix the rear end cap and prevent lead wire wear.

[0048] Example 2

[0049] In this embodiment, based on Embodiment 1, the rear end cap assembly is set on the workbench 1 for placing the rear end cap and lead wire; the rear end cap conveying and feeding mechanism 2 is set on the workbench 1 for clamping the rear end cap and lead wire on the mold plate and transporting them to the designated work station; the threading mechanism 3 is set on the workbench 1 for automatically hooking the lead wire and threading it into the core; and the detection and de-threading mechanism 4 is set on the workbench 1 for detecting the lead wire insertion status and de-threading the lead wire from the lead wire hook.

[0050] Example 3

[0051] In this embodiment, based on embodiment 1, the rear end cap conveying and feeding mechanism 2 includes a rear end cap clamping mechanism 21 and an XY axis guide rail 22; the rear end cap clamping mechanism 21 is a pneumatic gripper (model SMC-MHPS2-16D), with anti-slip teeth on the inner side of the gripper, used to clamp the rear end cap and lead wire; the XY axis guide rail 22 is fixed on the worktable 1, and a THK linear guide rail (model SHS20) is selected, used to drive the rear end cap clamping mechanism 21 to move in the plane.

[0052] Example 4

[0053] In this embodiment, based on Embodiment 1, the threading mechanism 3 includes a Z-axis module 31, a gear and rack transmission mechanism 32, a drive device 33, and a pull rod 34. The drive device 33 is a servo motor, which is electrically connected to the PLC control system. The gear and rack transmission mechanism 32 drives the pull rod 34 to move up and down along the Z-axis module 31. A lead hook is provided at the end of the pull rod 34. The lead hook is made of stainless steel wire with a diameter of 0.3mm and is used to hook the lead wire and thread it into the core. The fit clearance between the Z-axis module 31 and the gear and rack is adjusted to ≤0.03mm by a preload nut. The fit accuracy is set to ±0.1mm according to the core threading process requirements. This accuracy can ensure that the lead wire is threaded into the core hole.

[0054] Example 5

[0055] In this embodiment, based on Embodiment 1, the detection and wire removal mechanism 4 includes a photoelectric sensor and a wire removal claw. The photoelectric sensor is a Keyence-GT2-71N laser sensor, fixed to the bottom of the Z-axis module 31 by an L-shaped bracket. The transmitting end and receiving end are respectively aligned with the wire hook position at the end of the pull rod 34, used to detect whether the pull rod 34 has reached the predetermined position and the wire insertion state. The wire removal claw is made of spring steel sheet with an arc-shaped end, fixed to the output shaft of the cylinder by bolts. The cylinder is fixed to the worktable 1 by a bracket, located below the wire hook. When the photoelectric sensor detects the wire insertion, the wire removal claw, driven by the cylinder (stroke 10mm), pulls the wire to detach it from the wire hook. The specific steps are as follows:

[0056] 1. When the pull rod 34 of the threading mechanism 3 drives the lead wire to pass through the core and reach the predetermined position, the photoelectric sensor detects the position signal of the pull rod 34 or the lead wire and transmits the signal to the PLC control system.

[0057] 2. After receiving the signal from the photoelectric sensor, the PLC control system outputs a control signal to the solenoid valve of the cylinder. The cylinder piston rod extends, pushing the wire-removing claw to swing and pull the lead wire away from the lead wire hook, thus completing the wire removal action.

[0058] 3. After the thread is unwound, the cylinder piston rod retracts, the thread-unwound claw resets, and it waits for the next action.

[0059] Example 6

[0060] In this embodiment, based on Embodiment 1, adjustable supports 5 are provided at the four corners of the bottom of the workbench 1, including threaded lifting rods and spirit levels, for adjusting the height and levelness of the tooling. The adjustment steps for the adjustable supports 5 of the workbench 1 are as follows:

[0061] 1. Place the bubble level on the surface of workbench 1, and rotate the threaded lifting rods at the four corners to center the bubble level. At this time, the levelness error of the workbench is ≤0.2mm / m.

[0062] 2. Accuracy verification: The Z-axis motion accuracy of the threading mechanism was tested using a coordinate measuring machine. The test was repeated 100 times, and the measured error was within ±0.1mm, which meets the accuracy requirements for core threading.

[0063] Example 7

[0064] In this embodiment, based on Embodiment 1, the PLC control system adopts a Siemens S7-200SMART PLC, equipped with a touch screen human-machine interface, to coordinate and control the timing of the actions of the rear end cap conveying and feeding mechanism 2, the threading mechanism 3, and the detection and unthreading mechanism 4. The PLC control system controls the actions of each mechanism in the order of "feeding → conveying → threading → detection and unthreading", with a cycle of 5 seconds.

[0065] The working process of this utility model is as follows: Before the tooling for automatically passing the lead wire through the core is put into use, the height and level of the tooling can be adjusted by the adjustable supports 5 (including threaded lifting rods and level bulbs) at the four corners of the bottom of the workbench 1 to ensure the stability of the tooling operation.

[0066] Then, the rear end cap and lead wire are placed in the rear end cap mold on the workbench 1. The mold design can stably place the rear end cap and lead wire, preparing for subsequent operations. The rear end cap conveying and feeding mechanism 2 is started, and its XY axis guide rail 22 drives the rear end cap clamping mechanism 21 to move. The pneumatic gripper rear end cap clamping mechanism 21 clamps the rear end cap and lead wire on the mold plate and transports them to the designated work station according to the preset path.

[0067] The threading mechanism 3 starts working. The drive device 33 (servo motor) drives the pull rod 34 to move up and down along the Z-axis module 31 through the gear and rack transmission mechanism 32. The lead hook at the end of the pull rod 34 hooks the lead wire and automatically threads the lead wire into the drug core. The high-precision cooperation between the Z-axis module 31 and the gear and rack transmission mechanism 32 (fitting accuracy ±0.1mm, set according to the drug core threading process requirements) ensures the threading accuracy.

[0068] The photoelectric sensor in the detection and de-threading mechanism 4 detects whether the pull rod 34 has reached the predetermined position and the lead wire is inserted, and determines whether the lead wire has been successfully inserted into the core. If the lead wire is successfully inserted, the de-threading claw moves the lead wire under the action of the detection and de-threading mechanism 4 to remove it from the lead wire hook, thus completing one operation of the lead wire passing through the core.

[0069] The PLC control system (Siemens S7-200SMART PLC, equipped with a touch screen human-machine interface) coordinates and controls the timing of the actions of the rear end cap conveying and feeding mechanism 2, the threading mechanism 3, and the detection and unthreading mechanism 4. It displays the equipment operating status, fault alarms, and production data in real time, and supports parameter setting to enable the tooling to run continuously in a cycle.

[0070] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling for automatically threading a lead through a core, characterized in that: It includes a workbench (1), a rear end mold arrangement, a rear end material handling and feeding mechanism (2), a threading mechanism (3), a detection and unthreading mechanism (4), and a PLC control system; The rear end cap assembly is set on the workbench (1) for placing the rear end cap and lead wire; The rear end cap conveying and feeding mechanism (2) is set on the workbench (1) and is used to clamp the rear end cap and lead wire on the mold plate and transport them to the designated work station; The threading mechanism (3) is set on the workbench (1) and is used to automatically hook the lead wire and thread it into the drug core; The detection and wire removal mechanism (4) is set on the workbench (1) and is used to detect the wire insertion status and remove the wire from the wire hook.

2. The tooling for automatically threading the lead through the core according to claim 1, characterized in that: The rear end cap conveying and feeding mechanism (2) includes a rear end cap clamping mechanism (21) and an XY axis guide rail (22); The rear end cap clamping mechanism (21) is used to clamp the rear end cap and the lead wire; The XY axis guide rail (22) is fixed on the worktable (1) and is used to drive the rear end clamping mechanism (21) to move in the plane.

3. The tooling for automatically threading the lead through the core according to claim 1, characterized in that: The threading mechanism (3) includes a Z-axis module (31), a gear and rack transmission mechanism (32), a drive device (33), and a pull rod (34); The drive device (33) drives the pull rod (34) to move up and down along the Z-axis module (31) through the gear and rack transmission mechanism (32); The end of the pull rod (34) is provided with a lead hook for hooking the lead and inserting it into the core.

4. The tooling for automatically threading the lead through the core according to claim 1, characterized in that: The detection and de-threading mechanism (4) includes a photoelectric sensor and a de-threading claw; The photoelectric sensor is used to detect whether the pull rod (34) has reached the predetermined position and the state of the lead wire insertion; The detaching claw is used to pull the lead wire away from the lead hook.

5. The tooling for automatically threading the lead through the core according to claim 2, characterized in that: The XY axis guide rail (22) adopts a linear guide rail structure, and the rear end cap clamping mechanism (21) is a pneumatic gripper.

6. The tooling for automatically threading the lead through the core according to claim 3, characterized in that: The drive device (33) is a servo motor, which is electrically connected to the PLC control system.

7. The tooling for automatically threading the lead through the core according to claim 1, characterized in that: The workbench (1) has adjustable supports (5) at the four corners of its bottom, including threaded lifting rods and level bulbs, for adjusting the height and level of the tooling.

8. The tooling for automatically threading the lead through the core according to claim 1, characterized in that: The PLC control system adopts Siemens S7-200SMART PLC, equipped with a touch screen human-machine interface, and coordinates the timing of the actions of the rear end cap handling and feeding mechanism (2), the threading mechanism (3), and the detection and unthreading mechanism (4).

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