Flexible detonating cord plastic coating kneading device

Abstract

The utility model provides a kind of flexible detonating cord plastic-coated kneading device, including mounting bracket, mounting bracket is equipped with pincer air claw, pincer air claw two claw arms are respectively equipped with roller support, two oppositely arranged rollers are connected with the roller support of two rollers by roller shaft, one roller is located above the detonating cord that passes from extruder head outlet, another roller is located below the detonating cord that passes from extruder head outlet, long round hole for adjusting the position of roller is equipped on roller support;When pincer air claw is clamped, the kneading channel for kneading the detonating cord that passes from extruder head outlet is formed between the two rollers connected on roller support by pincer air claw, and the kneading channel corresponds with extruder head outlet.The utility model is under the action of the lengthened roller support of two claw arms of pincer air claw, and the opening of pincer air claw increases, which is convenient for artificial knotting operation.The utility model realizes the flexible design of kneading device to adapt to the normal progress of detonating cord plastic-coated production under different working conditions.

Description

Technical Field

[0001] This utility model belongs to the technical field of special equipment for explosives and pyrotechnics, and relates to a plastic coating kneading device in the production process of detonating cord plastic coating. Background Technology

[0002] Industrial detonating cord is a blasting material used to transmit detonation waves, either directly or by detonating explosive charges. It is widely used in engineering blasting. Plastic detonating cord refers to detonating cord coated with thermoplastic plastic on the outside; industrial detonating cord is typically red. When the semi-finished detonating cord is coated, the molten plastic coating is difficult to adhere to the smooth surface of the cord shaft during the coating process. Chinese Patent (Announcement No. CN204939334U, Announcement Date 2016.01.06) discloses a roller-type automatic kneading device for coating detonating cord. The semi-finished detonating cord from the drawing device is coated at the extruder head and then passes through the kneading device to the next step. Before coating, the end of the traction rope, pulled by the traction machine's take-up wheel and running through the entire process, is knotted and connected to the semi-finished detonating cord at the extruder head outlet. During the start-up process of detonating cord coating production, the traction machine pulls the traction rope, causing the detonating cord to flow through each process step. Small rollers are angled close to the moving detonating cord semi-finished product. The small rollers are rotated by the moving detonating cord semi-finished product, and at the same time, the molten plastic coating on the detonating cord semi-finished product is pressed onto the detonating cord by the rolling small rollers, thus achieving a kneading effect. During the kneading process, the position of the small rollers relative to the detonating cord is fixed. The detonating cord passes through the plastic extruder head, carrying the molten plastic coating that has not yet adhered, and passes through the space between two small rollers in an S-shape. The rollers easily squeeze and deform the plastic, clogging the coating channel at the front exit of the extruder head.

[0003] The roller-type kneading device, with its upper and lower rollers positioned close together, has a small gap between the rollers. This makes it difficult to operate when the traction rope pulled by the traction machine is manually knotted and connected to the detonating cord semi-finished product at the extruder head outlet. Furthermore, it requires changing the corresponding rollers when producing detonating cords of different specifications, which is inconvenient to use. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a flexible detonating cord coating kneading device, which realizes the flexible design of the kneading device to adapt to the normal operation of detonating cord coating production under different working conditions.

[0005] The technical solution of this utility model is as follows: It includes a mounting bracket, on which a clamp-type pneumatic gripper is mounted. Each of the two gripper arms of the clamp-type pneumatic gripper is equipped with a roller bracket. Two opposing rollers are connected to the roller brackets via roller shafts. One roller is positioned above the detonating cord exiting the extruder head outlet, and the other roller is positioned below the detonating cord exiting the extruder head outlet. The roller brackets are provided with elongated holes for adjusting the position of the rollers. When the clamp-type pneumatic gripper clamps, a pinching channel is formed between the two rollers connected to the roller brackets for pinching the detonating cord exiting the extruder head outlet. The pinching channel corresponds to the extruder head outlet.

[0006] The roller surface has an arc-shaped concave surface for forming a kneading channel, and the roller axis is perpendicular to the roller support.

[0007] The two rollers are brought close together obliquely from top to bottom to press against the moving detonating cord.

[0008] The end of the gripper is equipped with a sensor for detecting the state of the plastic coating on the detonating cord.

[0009] The sensor is a high-temperature resistant fiber optic sensor.

[0010] The sensor is mounted on a mounting bracket via a sensor bracket.

[0011] The sensor bracket is provided with an elongated hole for adjusting the position, and the sensor and roller shaft are mounted in the elongated hole.

[0012] The mounting bracket is mounted on the frame and has holes for air pipes to pass through.

[0013] The clamp-type pneumatic gripper is equipped with a pressure regulating device for adjusting the clamping torque of the gripper.

[0014] This invention relates to an automatic clamping device that can automatically clamp the coating when the coating begins to coat and when the coating breaks. The extended roller supports at the two claw arms of the clamp-type pneumatic gripper increase the opening of the gripper, facilitating manual knotting operations. To facilitate the processing of detonating cord for different types, elongated holes are provided on the roller supports and sensor supports, allowing for flexible adjustment of the roller and sensor positions to adapt to different types of detonating cord processing.

[0015] This invention and its principles can be used to automate the detonating cord coating process, achieving human-machine separation, reducing safety risks, and solving problems such as unsafe operators and excessive labor requirements in existing detonating cord coating processes. This invention can be used in the production of various industrial detonating cords, as well as for the coating and lamination of other pipes, cables, and wires and cables. It is safe, reliable, easy to operate, and saves labor.

[0016] The beneficial effects of this utility model are: 1. This utility model uses a movable rolling wheel to clamp the plastic coating onto the detonating cord without affecting the movement of the detonating cord, which is more reliable than manual clamping; 2. This utility model uses a sensor to detect whether the coating is broken and is set to automatically clamp when the detonating cord coating process starts, which is more reliable than manual inspection; 3. This utility model, used in the detonating cord coating process, can realize human-machine isolation operation and eliminate safety hazards; 4. This utility model, used in the detonating cord coating process, reduces one on-site operator and lowers the labor cost of detonating cord production; 5. This utility model can also be used in the production of wires and cables, plastic-coated steel wire ropes, etc. Attached Figure Description

[0017] Figure 1 This is one of the perspective views of this utility model;

[0018] Figure 2 yes Figure 1 The main view;

[0019] Figure 3 This is the second perspective view of this utility model;

[0020] Figure 4 yes Figure 3 The main view. Detailed Implementation

[0021] Figure 1 , Figure 2 In this invention, a frame 9, a mounting bracket 6, and a clamp-type pneumatic gripper 5 mounted on the mounting bracket 6 are provided. Roller brackets 2 are mounted on the two gripper arms of the clamp-type pneumatic gripper 5. Two rollers 3 are connected to the roller brackets 2 via roller shafts 4. A sensor 8 is mounted at the tail end of the clamp-type pneumatic gripper 5. The sensor 8 is mounted on the mounting bracket via a sensor bracket 7. The sensor 8 is positioned away from the extruder head 10 to avoid affecting its service life due to excessive temperature at the extruder head 10. A clamp-type detonating cord coating automatic kneading device is installed on the left side of the extruder head 10. The detonating cord semi-finished product 11 is inserted from the right side of the extruder head 10, and the coated detonating cord 1 passes between the two small rollers 3. The rolling surface of the rollers 3 that contacts the detonating cord 1 during kneading is a smooth, circular groove.

[0022] The roller shaft 4 is perpendicular to the roller bracket 2. The two rollers 3 used for kneading achieve double-point kneading in two directions. The two rollers are symmetrically arranged above and below the detonating cord 1. The rollers are made of metal materials such as stainless steel, brass, and aluminum alloy, or other materials with a melting temperature higher than the extrusion temperature of the plastic coating of the detonating cord.

[0023] Figure 3 , Figure 4In the process of coating the detonating cord, when the coating process is started or when the sensor 8 detects that the plastic coating of the detonating cord has broken, the two rollers 3, driven by the clamp-type gripper 5, rotate at a certain angle along their axis. This causes the two rollers 3 to obliquely press against the moving detonating cord 1 from above and below. The rollers 3 on the clamp-type gripper are driven to rotate by the moving detonating cord 1. At the same time, the plastic coating extruded from the extruder head 10 on the detonating cord 1 is pressed against the cord shaft from above and below by the rolling rollers 3, thus achieving a kneading effect. Furthermore, since the rollers 3 rotate and roll with the cord shaft, they do not affect the movement of the cord shaft. After the kneading action is completed, the rollers 3 return to their original position under the drive of the clamp-type gripper 5, and the detonating cord coating process can proceed normally.

[0024] Before kneading, the extended roller brackets 2 at the two claw arms at the head of the clamp-type pneumatic gripper 5 increase the distance between the rollers 3, making it easier for manual knotting operations.

[0025] When processing different types of detonating cords, such as high-energy detonating cord, ordinary detonating cord, and low-energy detonating cord, the roller 3 and sensor 8 at the elongated hole can be adjusted to adapt to different types of detonating cord processing.

Claims

1. A flexible detonating cord coating and kneading device, characterized in that: The device includes a mounting bracket (6), on which a clamp-type pneumatic gripper (5) is mounted. Roller brackets (2) are mounted on the two claw arms of the clamp-type pneumatic gripper (5). Two opposing rollers (3) are connected to the roller brackets (2) via roller shafts (4). One roller (3) is located above the detonating cord (1) that passes through the outlet of the extruder head (10), and the other roller (3) is located below the detonating cord (1) that passes through the outlet of the extruder head (10). The roller brackets (2) are provided with elongated holes for adjusting the position of the rollers. When the clamp-type pneumatic gripper (5) clamps, a pinching channel is formed between the two rollers (3) connected on the roller brackets (2) for pinching the detonating cord (1) that passes through the outlet of the extruder head (10). The pinching channel corresponds to the outlet of the extruder head (10).

2. The flexible detonating cord coating and kneading device according to claim 1, characterized in that: The roller (3) has an arc-shaped concave surface for forming a kneading channel, and the roller shaft (4) is perpendicular to the roller support (2).

3. The flexible detonating cord coating and kneading device according to claim 1, characterized in that: The two rollers (3) are obliquely pressed against the moving detonating cord (1) from the top and bottom directions.

4. The flexible detonating cord coating and kneading device according to claim 1, characterized in that: The tail end of the clamp-type pneumatic gripper (5) is equipped with a sensor (8) for detecting the state of the plastic coating on the detonating cord.

5. The flexible detonating cord coating and kneading device according to claim 4, characterized in that: The sensor (8) is a high-temperature resistant fiber optic sensor.

6. The flexible detonating cord coating and kneading device according to claim 4, characterized in that: The sensor (8) is mounted on the mounting bracket (6) via the sensor bracket (7).

7. The flexible detonating cord coating and kneading device according to claim 6, characterized in that: The sensor bracket (7) is provided with an elongated hole for adjusting the position of the roller, and the sensor (8) and the roller shaft (4) are mounted at the elongated hole.

8. The flexible detonating cord coating and kneading device according to claim 1, characterized in that: The mounting bracket (6) is mounted on the frame (9), and the mounting bracket (6) has a duct through-plate hole.

9. The flexible detonating cord coating and kneading device according to claim 1, characterized in that: The clamp-type pneumatic gripper (5) is equipped with a pneumatic pressure regulating device on its air pipe for adjusting the clamping torque of the pneumatic gripper.

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