Fastening device for metal sleeve of cable type initiating explosive device

Abstract

The invention relates to a fastening device for a metal sleeve of a cable initiating explosive device, and solves the problems that the sleeve is inconsistent in size and non-uniform in indentation after being tightened and cannot meet process requirements due to the fact that solidified glue exists between clamp spring die petals at present. Comprising a cabinet body and a working table located on the cabinet body, a micro hydraulic station and a control cabinet are placed in the cabinet body, a hydraulic tightening device, a supporting air cylinder, a cable feeding air cylinder and a clamping air cylinder are installed on the working table, a plurality of molds which can synchronously move towards the center and extrude a sleeve are installed in the hydraulic tightening device, and the clamping air cylinder is installed on the cable feeding air cylinder. A clamping jaw is installed at the output end of the clamping air cylinder, a supporting frame is installed at the output end of the supporting air cylinder, a limiting face is arranged on the side, close to the hydraulic tightening device, of the supporting frame, and the supporting frame can rotate to a working table top panel at the bottom of the clamping air cylinder under the action of the supporting air cylinder. The device is high in automation degree and good in intrinsic safety; the size consistency after fastening is improved; fastening of different cable products and sleeves is met, and the equipment compatibility is high.

Description

Technical Field

[0001] This invention belongs to the field of assembly technology of cable pyrotechnics, specifically relating to a metal sleeve fastening device for cable pyrotechnics. It is applied to the crimping and fastening of cable pyrotechnics and the metal sleeves to which they are connected, thereby improving the reliability of the connection between the two. Background Technology

[0002] The current method for fastening the metal sleeve of cable-type pyrotechnics uses a multi-lobed snap ring. This snap ring is integrally formed, and the sleeve is tightened by the synchronous contraction of the snap ring through an external mold, achieving a reliable connection with the cable. This technology is a traditional and mature technology, and it is used in the tightening process of civilian detonators and the tightening of aerospace pyrotechnics.

[0003] The spring clip tightening technology is performed manually, utilizing the principle of threaded insertion. By increasing the lever arm, the spring clip is manually screwed into the mold to achieve tightening. According to process requirements, to increase the reliability of the cable and sleeve after tightening, a strong adhesive is applied to the outside of the cable before tightening. This adhesive overflows into the gap between the spring clips during sleeve tightening. Due to the strong adhesive properties of the adhesive and the very small gap between the spring clips, it cannot be cleaned. This results in solidified adhesive between the spring clip mold pieces, causing inconsistent dimensions and uneven indentations after sleeve tightening, failing to meet process requirements. Summary of the Invention

[0004] This invention provides a fastening device for metal sleeves of cable-type pyrotechnics, which solves the problem that current methods of tightening snap rings cause solidified glue between snap ring molds, resulting in inconsistent sleeve dimensions, uneven indentations, and failure to meet process requirements.

[0005] This invention is achieved through the following technical solutions:

[0006] A fastening device for metal sleeves of cable-type pyrotechnics includes a cabinet 3 and a worktable 4 located thereon. The cabinet 3 houses a miniature hydraulic power station and a control cabinet. The worktable 4 is equipped with a hydraulic tightening device 2-1, a support cylinder 2-4, a cable feeding cylinder 2-7, and a clamping cylinder 2-9. The hydraulic tightening device 2-1 contains multiple molds that can move synchronously towards the center and compress the sleeve 2-12. The hydraulic power for the hydraulic tightening device 2-1 comes from the miniature hydraulic power station. The clamping cylinder 2-9 is mounted on the cable feeding cylinder 2-7. On the cable cylinder 2-7, a gripper 2-11 is installed at the output end of the clamping cylinder 2-9, and a support frame 2-3 is installed at the output end of the support cylinder 2-4. The support frame 2-3 has a limiting surface on the side near the hydraulic tightening device 2-1. The support frame 2-3 can rotate to the worktable panel 2-6 at the bottom of the clamping cylinder 2-9 under the action of the support cylinder 2-4. The control cabinet is equipped with corresponding control valves for controlling the actions of the support cylinder 2-4, the hydraulic tightening device 2-1, the cable feeding cylinder 2-7, and the clamping cylinder 2-9.

[0007] Furthermore, the clamping cylinder 2-9 is mounted on the cable feeding cylinder 2-7 via a common adapter plate 2-8.

[0008] Furthermore, the support cylinder 2-4 is mounted on the worktable panel 2-6 of the worktable 4 via the support 2-5.

[0009] Furthermore, the mold installed inside the hydraulic tightening device 2-1 is a five-slot mold 2-2, which consists of a mounting hole 3-1 and five teeth 3-2. The mounting hole 3-1 is used to connect with the hydraulic tightening device 2-1, and the five teeth 3-2 consists of five protruding teeth.

[0010] Furthermore, the five-line printing mold 2-2 consists of eight pieces.

[0011] Furthermore, a protective cover 1 is provided on the workbench 4.

[0012] Furthermore, the protective cover 1 is provided with a protective door 5 on its side, which is driven to open and close by a protective door cylinder 2.

[0013] The beneficial effects of this invention are:

[0014] This invention firstly achieves automated fastening of cable products and metal sleeves, changing the traditional manual fastening method. It boasts a high degree of automation and inherent safety. Secondly, it employs a split mold design, with eight molds that can be completely separated by the hydraulic tightening mechanism. This facilitates the cleaning of adhesive inside and between the molds, improving dimensional consistency and product appearance quality after fastening. Thirdly, the stroke of the hydraulic tightening mechanism is controllable, thereby controlling the mold's closing dimensions to meet the fastening requirements of different cable products and sleeves, demonstrating strong equipment compatibility. Attached Figure Description

[0015] Figure 1 It is an overall diagram of the equipment;

[0016] Figure 2 Fastening device diagram;

[0017] Figure 3 Single-petal mold diagram. Detailed Implementation

[0018] This invention is a fastening device for metal sleeves of cable-type pyrotechnic products, which consists of a frame and a fastening device.

[0019] Specifically, the equipment frame forms the foundation of the device, with a cabinet positioned beneath it. Inside the cabinet are a miniature hydraulic station and a control cabinet. A workbench is mounted above the cabinet, equipped with fastening devices and a protective cover. The fastening devices are housed within the protective cover, and an automatic door is located on its side for operators to load and unload products.

[0020] The fastening device is the core of this equipment, used to fasten the sleeve and cable. It includes a hydraulic tightening mechanism, a five-mark mold, a support mechanism, a clamping mechanism, and a cable feeding mechanism. The five-mark mold consists of eight pieces, installed inside the hydraulic tightening mechanism. It moves towards the center with the tightening mechanism to compress and fasten the sleeve. The support mechanism supports the sleeve before fastening. After the clamping mechanism clamps and fixes the cable, the support mechanism retracts, and the cable feeding mechanism drives the clamping mechanism to deliver the sleeve and cable to the center of the five-mark mold. The hydraulic tightening mechanism then drives the mold to complete the fastening.

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] Example:

[0023] The complete machine of the present invention is as follows Figure 1 It consists of a protective cover 1, a cabinet 3, and a workbench 4. Below the workbench 4 is the cabinet 3, which houses a miniature hydraulic station and a control cabinet. Above the cabinet 3 are fastening devices and the protective cover 1. The protective cover 1 has a protective door 5 on its side, which is opened and closed by a protective door cylinder 2.

[0024] Fastening devices such as Figure 2 There are eight five-stage printing molds 2-2, installed inside the hydraulic tightening device 2-1, used for securing the sleeve. The cable feeding cylinder 2-7 is mounted on the worktable 4, and the clamping cylinder 2-9 is mounted on the cable feeding cylinder 2-7 via a common adapter plate 2-8. The gripper 2-11 is mounted on the output end of the clamping cylinder 2-9. The support cylinder 2-4 is mounted on the worktable panel 2-6 of the worktable 4 via a support 2-5, and the support frame 2-3 is mounted on the output end of the support cylinder 2-4.

[0025] Among them, the five-line printing mold 2-2 is as follows Figure 3 As shown, it consists of mounting holes 3-1 and five teeth 3-2, wherein mounting holes 3-1 are used for connection with hydraulic tightening device 2-1, and five teeth 3-2 are composed of 5 protruding teeth.

[0026] During production, the operator applies glue to cable 2-10 and inserts it into sleeve 2-12. The assembled product is then placed into the fastening device, ensuring that the end of sleeve 2-12 is aligned with the limiting surface on the side of support frame 2-3 near the hydraulic tightening device 2-1, and placed into gripper 2-11. After the equipment starts, gripper 2-11 is driven by clamping cylinder 2-9 to clamp and fix cable 2-10, while sleeve 2-12 is supported by support frame 2-3. Then, support frame 2-3 rotates to the worktable panel 2-6 at the bottom of clamping cylinder 2-9, and sleeve 2-12 and cable 2-10 are fed into the center of eight 2-2 five-line printing molds by cable feeding cylinder 2-7. When the hydraulic tightening device 2-1 is working, the eight 2-2 five-mark molds move synchronously toward the center and squeeze the sleeve 2-12. After squeezing to the required size, the hydraulic tightening device 2-1 resets, the eight five-mark molds 2-2 separate, the other cylinders reset, the operator removes the product, and the cable and sleeve are fastened.

[0027] This invention utilizes hydraulic tightening technology and employs eight independent concentric molds with large gaps between them, making them easy to clean.

[0028] Different products require different retaining rings. Because retaining rings are manufactured using a one-piece molding technology, they are difficult to process and prone to damage and replacement during use, resulting in high production costs. This invention uses eight independent molds, with a large design size, facilitating independent processing. Furthermore, the tightening dimension is controllable through a hydraulic system, and one set of molds can accommodate the fastening of multiple products.

[0029] Meanwhile, existing processes have low levels of automation, requiring operators to repeatedly manipulate equipment levers, resulting in high labor intensity; existing equipment lacks protective devices for the product, failing to achieve human-machine isolation, posing significant safety hazards; and product sealing dimensions rely on operator experience, leading to poor product quality consistency. This invention, however, utilizes mechanical automation technology, isolation and protection technology, and hydraulic control technology to achieve process automation, human-machine isolation, and automatic controllable product sealing dimensions.

Claims

1. A fastening device for metal sleeves of cable-type pyrotechnics, characterized in that: Includes a cabinet (3) and a workbench (4) on top of it. Inside the cabinet (3) are a miniature hydraulic station and a control cabinet. On the workbench (4) are installed a hydraulic tightening device (2-1), a support cylinder (2-4), a cable feeding cylinder (2-7), and a clamping cylinder (2-9). The hydraulic tightening device (2-1) contains multiple molds that can move synchronously toward the center and squeeze the sleeve (2-12). The hydraulic power of the hydraulic tightening device (2-1) comes from the miniature hydraulic station. The clamping cylinder (2-9) is mounted on the cable feeding cylinder (2-7) and clamps... The output end of the cylinder (2-9) is equipped with a gripper (2-11), and the output end of the support cylinder (2-4) is equipped with a support frame (2-3). The support frame (2-3) has a limiting surface on the side near the hydraulic tightening device (2-1). The support frame (2-3) can rotate to the worktable panel (2-6) at the bottom of the clamping cylinder (2-9) under the action of the support cylinder (2-4). The control cabinet is equipped with corresponding control valves for controlling the actions of the support cylinder (2-4), the hydraulic tightening device (2-1), the cable feeding cylinder (2-7), and the clamping cylinder (2-9).

2. The fastening device for metal sleeves of cable-type pyrotechnics according to claim 1, characterized in that: The clamping cylinder (2-9) is mounted on the cable feeding cylinder (2-7) via a common adapter plate (2-8).

3. The fastening device for metal sleeves of cable-type pyrotechnics according to claim 1, characterized in that: The support cylinder (2-4) is mounted on the worktable panel (2-6) of the worktable (4) via the support (2-5).

4. The fastening device for metal sleeves of cable-type pyrotechnics according to claim 1, characterized in that: The mold installed inside the hydraulic tightening device (2-1) is a five-slot mold (2-2), which consists of a mounting hole (3-1) and five teeth (3-2). The mounting hole (3-1) is used to connect with the hydraulic tightening device (2-1), and the five teeth (3-2) consists of (5) protruding teeth.

5. A fastening device for metal sleeves of cable-type pyrotechnics according to claim 4, characterized in that: There are eight five-line printing molds (2-2).

6. A fastening device for metal sleeves of cable-type pyrotechnics according to claim 1, characterized in that: The workbench (4) is equipped with a protective cover (1).

7. A fastening device for metal sleeves of cable-type pyrotechnics according to claim 6, characterized in that: The protective cover (1) has a protective door (5) on its side, which is driven to open and close by a protective door cylinder (2).

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