Positioning device for production and assembly of pyrotechnic gas generator

Abstract

The utility model relates to the technical field of gas generator assembly, and discloses a positioning device for firework type gas generator production assembly, which comprises an assembly table, and is characterized in that four first sliding grooves are formed in the assembly table, the inner sides of the four first sliding grooves are respectively connected with a sliding block in a sliding manner, and the upper sides of the four sliding blocks are respectively and fixedly connected with a fixing plate; positioning adjusting mechanisms for positioning gas generators of different sizes are arranged on one sides of the four fixing plates, the assembling table is provided with an assembling table fixing mechanism for fixing the assembling table, the gas generators are positioned and clamped through the pushing plates in the four directions, the assembling precision is higher, the product quality can be improved, the production efficiency is improved, and the production cost is reduced. The use reliability of the automobile safety air bag can be improved, and high practical value is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas generator assembly, in particular to a positioning device for production and assembly of a pyrotechnic gas generator. Background Art

[0002] Modern automobile airbags are equipped with gas generators of different specifications. Among them, the common pyrotechnic gas generators are equipped with two independent integral gas generators connected end to end. When the vehicle collides, the gas generator inflates the airbag and then deploys to protect the safety of the passengers. When assembling and producing pyrotechnic gas generator equipment, in order to ensure the reliability of the gas generator, it is necessary to prepare a special positioning device to assist in assembly. The existing positioning devices for gas generator assembly are generally designed by clamping and positioning on both sides, which may lead to inaccurate positioning and large errors.

[0003] For example, a Chinese utility model patent with announcement number CN220145789U discloses a clamping and positioning device for assembling aerospace parts. Although the device can position the workpiece through clamping devices on both sides, only clamping and positioning devices are provided on both sides. For workpieces with high precision requirements, deviation may occur during the positioning process. Based on this, a positioning device for the production and assembly of pyrotechnic gas generators is proposed. Utility Model Content

[0004] In order to solve the technical problem of gas generator assembly, the utility model provides a positioning device for production and assembly of a pyrotechnic gas generator.

[0005] The utility model is implemented by the following technical scheme: a positioning device for production and assembly of a pyrotechnic gas generator, comprising an assembly table, wherein four No. 1 slide grooves are provided on the assembly table, wherein the inner sides of the four No. 1 slide grooves are respectively slidably connected with sliders, and the upper sides of the four sliders are respectively fixedly connected with fixing plates, and one side of the four fixing plates is provided with a positioning adjustment mechanism for positioning gas generators of different sizes, the assembly table is provided with an assembly table fixing mechanism for fixing the assembly table, and a fixing plate driving mechanism is provided below the assembly table for making the four fixing plates approach the center of the assembly table at the same time.

[0006] As a further improvement of the above solution, the positioning and adjusting mechanism includes a plurality of threaded rods respectively threadedly sleeved with the four fixing plates, and one end of the plurality of threaded rods on one side of each fixing plate is rotatably connected to a push plate.

[0007] As a further improvement of the above solution, the assembly table fixing mechanism includes a fixing shaft fixedly connected to the lower side of the assembly table, and the lower end of the fixing shaft is fixedly connected to a base.

[0008] As a further improvement of the above scheme, the fixed plate driving mechanism includes a gear rotatably connected to the fixed shaft, four No. 2 slide grooves are opened on the gear, and the inner sides of the four No. 2 slide grooves are provided with limit rods fixedly connected to the lower sides of four sliding blocks respectively corresponding to each other, and a gear driving mechanism for rotating the gear is provided on one side of the gear.

[0009] As a further improvement of the above solution, the gear drive mechanism includes a cylinder fixedly connected to the lower side of the assembly table, and the output end of the cylinder is fixedly connected to a rack meshing with the gear.

[0010] As a further improvement of the above solution, a switch control panel is fixedly connected to one side of the assembly platform.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model realizes simultaneous positioning and clamping of a push plate from all directions through the cooperation of gears, a limit rod and a slide block, with higher positioning accuracy and more reliable product quality.

[0013] 2. The utility model can modify and adjust the positioning distance of a certain side by cooperating with each other through the fixed plate, the threaded rod and the push plate, so as to realize the function of positioning and clamping workpieces of different sizes and shapes, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A front view of a positioning device for production and assembly of a pyrotechnic gas generator provided by the utility model;

[0015] Figure 2 A bottom view of a positioning device for production and assembly of a pyrotechnic gas generator provided by the utility model;

[0016] Figure 3 The utility model provides a top view of a positioning device for production and assembly of a pyrotechnic gas generator.

[0017] Description of main symbols:

[0018] 1. Base; 2. Fixed shaft; 3. Assembly table; 4. Threaded rod; 5. Fixed plate; 6. Cylinder; 7. Push plate; 8. Gear; 9. No. 1 slide; 10. Limit rod; 11. No. 2 slide; 12. Rack; 13. Switch control board; 14. Slider. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0020] Example:

[0021] Please combine Figure 1-Figure 3 A positioning device for production and assembly of a pyrotechnic gas generator of the present embodiment includes an assembly platform 3, on which four No. 1 slide grooves 9 are provided, and sliders 14 are slidably connected to the inner sides of the four No. 1 slide grooves 9, respectively. A limiting groove is provided in the slide groove 9, and the slider 14 is clamped in the limiting groove and can slide back and forth in a straight line in the limiting groove, thereby playing a certain supporting role for the slider 14. The upper sides of the four sliders 14 are respectively fixedly connected with fixing plates 5, and one side of the four fixing plates 5 is provided with a positioning adjustment mechanism for positioning gas generators of different sizes. The assembly platform 3 is provided with an assembly platform fixing mechanism for fixing the assembly platform 3, and a fixing plate driving mechanism is provided below the assembly platform 3 for making the four fixing plates 5 approach the center of the assembly platform 3 at the same time.

[0022] Please combine Figure 1 As shown, the positioning and adjusting mechanism includes two threaded rods 4 which are respectively threadedly connected to the four fixed plates 5. One end of the two threaded rods 4 on one side of each fixed plate 5 is rotatably connected with a push plate 7. In this embodiment, the push plate 7 has a plate-like profile and is used to position and clamp the rectangular gas generator. If the gas generator has a circular profile, the push plate 7 can be adjusted accordingly and can be set to a curved push plate 7.

[0023] The assembly platform fixing mechanism comprises a fixing shaft 2 fixedly connected to the lower side of the assembly platform 3 , and a base 1 is fixedly connected to the lower end of the fixing shaft 2 .

[0024] Please combine Figure 2 As shown, the fixed plate driving mechanism includes a gear 8 rotatably connected to the fixed shaft 2, four No. 2 slide grooves 11 are provided on the gear 8, and the inner sides of the four No. 2 slide grooves 11 are provided with limit rods 10 fixedly connected to the lower sides of four sliders 14 respectively in a one-to-one correspondence. A gear driving mechanism for rotating the gear 8 is provided on one side of the gear 8, and the gear driving mechanism includes a cylinder 6 fixedly connected to the lower side of the assembly platform 3, and the output end of the cylinder 6 is fixedly connected to a rack 12 meshing with the gear 8, and a switch control board 13 is fixedly connected to one side of the assembly platform 3.

[0025] The implementation principle of a positioning device for production and assembly of a pyrotechnic gas generator in the embodiment of the present application is: start the cylinder 6, drive the rack 12 to engage the gear 8 to rotate, and under the joint limiting action of the No. 2 slide 11 and the No. 1 slide 9, the limiting rods 10 are moved closer to and away from each other, driving the sliders 14 to move closer to and away from each other. Since the fixed plate 5 and the slider 14 are fixedly connected, the fixed plate 5 and the push plate 7 are pushed together at this time, so that the pyrotechnic gas generator can be positioned and clamped.

[0026] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A positioning device for production and assembly of a pyrotechnic gas generator, comprising an assembly table (3), characterized in that: The assembly platform (3) is provided with four No. 1 slide grooves (9), the inner sides of the four No. 1 slide grooves (9) are slidably connected with sliders (14), the upper sides of the four sliders (14) are fixedly connected with fixed plates (5), one side of the four fixed plates (5) is provided with a positioning adjustment mechanism for positioning gas generators of different sizes, the assembly platform (3) is provided with an assembly platform fixing mechanism for fixing the assembly platform (3), and a fixed plate driving mechanism is provided below the assembly platform (3) for making the four fixed plates (5) approach the center of the assembly platform (3) at the same time.

2. A positioning device for production and assembly of a pyrotechnic gas generator according to claim 1, characterized in that: The positioning adjustment mechanism comprises a plurality of threaded rods (4) respectively threadedly sleeved with four fixing plates (5), and one end of the plurality of threaded rods (4) on one side of each fixing plate (5) is rotatably connected to a push plate (7).

3. A positioning device for production and assembly of a pyrotechnic gas generator according to claim 1, characterized in that: The assembly platform fixing mechanism comprises a fixing shaft (2) fixedly connected to the lower side of the assembly platform (3), and the lower end of the fixing shaft (2) is fixedly connected to a base (1).

4. A positioning device for production and assembly of a pyrotechnic gas generator as claimed in claim 3, characterized in that: The fixed plate driving mechanism comprises a gear (8) rotatably connected to the fixed shaft (2); four No. 2 slide grooves (11) are provided on the gear (8); the inner sides of the four No. 2 slide grooves (11) are provided with limit rods (10) which are fixedly connected to the lower sides of four sliding blocks (14) in a one-to-one correspondence; and a gear driving mechanism for rotating the gear (8) is provided on one side of the gear (8).

5. A positioning device for production and assembly of a pyrotechnic gas generator as claimed in claim 4, characterized in that: The gear drive mechanism comprises a cylinder (6) fixedly connected to the lower side of the assembly platform (3), and an output end of the cylinder (6) is fixedly connected to a rack (12) meshing with the gear (8).

6. A positioning device for production and assembly of a pyrotechnic gas generator according to claim 1, characterized in that: A switch control panel (13) is fixedly connected to one side of the assembly platform (3).

Images