Automatic press-fitting device for ignition assembly of filter screen, lower cover and lower shell of gas generator

Abstract

An automatic press-fitting device for a filter screen, a lower cover and a lower shell ignition assembly of a gas generator comprises a fixed platform, an index plate is arranged on the fixed platform, a circular rotating platform is fixed to a rotating disc of the index plate, and a plurality of sets of positioning tools are evenly distributed on the rotating platform in the circumferential direction. A top plate is fixed on the fixed platform through a stand column and a central column, a press-fitting cylinder is fixed in the middle of the top plate, the lower end of a piston rod of the press-fitting cylinder penetrates through the top plate and is connected with a pressure head mounting plate, a pressure head is mounted below the pressure head mounting plate, and magnets are symmetrically arranged on the lower end surface of the pressure head; a supporting plate is fixed to the stand column, a sliding rail groove is fixed to the supporting plate, a guide air cylinder and a sliding rail are installed on the sliding rail groove in the vertical direction, an air cylinder base plate is connected between the lower end of a piston rod of the guide air cylinder and the sliding rail, a clamping jaw air cylinder is fixed to the lower face of the air cylinder base plate, and two clamping arms are symmetrically arranged at the front end of the clamping jaw air cylinder. The device is high in working efficiency and assembly precision, and can ensure the product quality.

Description

Technical Field

[0001] The utility model relates to an automatic press-fitting device, in particular to an automatic press-fitting device for a filter screen, a lower cover and a lower shell ignition assembly of a gas generator. Background Art

[0002] During the production process of the gas generator, the filter, lower cover, and lower shell ignition assembly need to be assembled into a filter and lower shell ignition assembly. Currently, conventional pressing equipment is used to assemble the filter, lower cover, and lower shell ignition assembly, and two left and right workstations are set up on the pressing equipment. At the left workstation, the filter and lower cover are first pressed into an assembly, and then this assembly is manually placed into the right workstation tooling and pressed into the filter and lower shell ignition assembly. During the pressing process, this equipment can easily damage the filter, resulting in high labor intensity and low work efficiency. Therefore, it is necessary to design automatic equipment to press the filter, lower cover, and lower shell ignition assembly. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an automatic press-fitting device for the gas generator filter, lower cover and lower shell ignition assembly, which has high working efficiency and assembly precision and can ensure product quality.

[0004] The technical solution of the utility model is as follows:

[0005] An automatic press-fitting device for a gas generator filter, lower cover, and lower shell ignition assembly comprises a fixed platform, a dividing plate driven by a servo motor is provided on the fixed platform, a circular rotating platform is fixed on the turntable of the dividing plate, and multiple sets of positioning fixtures are evenly distributed along the circumference of the rotating platform for placing the lower shell ignition assembly to be assembled;

[0006] A top plate is fixed on the fixed platform 1 through the columns and the center column. A press cylinder is fixed in the middle of the top plate. The lower end of the piston rod of the press cylinder passes through the top plate and is connected to the press head mounting plate. A press head is installed under the press head mounting plate. The axes of the press cylinder and the press head are aligned with the circumferential line of the positioning tooling. Magnet blocks are symmetrically provided on the lower end surface of the press head to attract the lower cover to be assembled.

[0007] A support plate is fixed on the column, a slide rail groove is fixed on the support plate, a guide cylinder and a slide rail are installed on the slide rail groove in the vertical direction, a cylinder seat plate is connected between the lower end of the piston rod of the guide cylinder and the slide rail, a clamping cylinder is fixed under the cylinder seat plate, and two clamping arms are symmetrically provided at the front end of the clamping cylinder for clamping the filter to be assembled.

[0008] As a further preference, there are two upright columns located on one side of the rotating platform, and there is one central column which passes through the central hole of the dividing plate and is then fixed on the fixed platform.

[0009] As a further optimization, a proximity sensor is fixed on the fixed plate in the center of the index plate by a sensor support, wherein a set of positioning tools rotates to the lower side of the pressure head and corresponds to the proximity sensor, which is used to detect whether the positioning tools are rotated in place.

[0010] As a further optimization, a fixed plate is arranged on the pressure head mounting plate near the column side, and a displacement pressure head is fixed on the fixed plate, and a displacement sensor is fixed on the column below the displacement pressure head, and when the pressure head is pressed into place, the displacement pressure head compresses the displacement sensor, which is used to detect whether the pressure assembly cylinder is assembled in place.

[0011] As a further optimization, a sensor support is fixed on one of the columns, and a first photoelectric sensor and a second photoelectric sensor are respectively mounted on the sensor support, the first photoelectric sensor is directed obliquely upward to the pressure head, and is used to detect whether the lower cover is installed; the second photoelectric sensor is directed obliquely downward to the positioning tool, and is used to detect whether the filter screen is installed.

[0012] As a further optimization, the device is also provided with a controller and a man-machine interface, the controller is a PLC programmable controller, and the signal output ends of the various sensors are respectively connected in communication with the controller, which is used to control the actions of the various cylinders and servo motors.

[0013] The beneficial effects of the present application are:

[0014] The rotation platform and the pressure assembly cylinder drive the pressure head to cooperate to realize the automatic pressure assembly of the filter screen, the lower cover and the lower shell ignition assembly of the gas generator, and the degree of automation is high, and the production efficiency is high; the two clamping arms symmetrically arranged at the front end of the clamping jaw cylinder clamp the filter screen to be assembled, which can ensure that the filter screen is coaxial with the lower cover, realizes the accurate pressing of the lower cover into the filter screen, avoids the damage and deformation of the filter screen, prevents the pressure head from taking away the assembled assembly after the pressure assembly is completed, has high assembly precision, and can ensure product quality and reduce labor intensity. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the present application.

[0016] Figure 2 is Figure 1 the right view after removing the center column.

[0017] Figure 3 is Figure 1 the top view.

[0018] Figure 4 is a perspective view of the present application.

[0019] Figure 5 is Figure 2 the A section view of

[0020] Figure 6 It is a structural diagram of the pressed filter, lower cover and lower shell ignition assembly.

[0021] In the figure: fixed platform 1, column 2, displacement sensor 3, first photoelectric sensor 4, second photoelectric sensor 5, safety grating 6, support plate 7, top plate 8, linear bearing 9, guide column 10, press-fit cylinder 11, transition plate 12, cylinder mounting plate 13, pressure head mounting plate 14, pressure head 15, filter 16, lower shell ignition assembly 17, positioning tool 18, center column 19, servo motor 20, rotating platform 21, indexing plate 22, fixed plate 23, displacement pressure head 24, clamping arm 25, lower cover 26, buffer plate 27, buffer 28, slide rail 29, guide cylinder 30, slide rail groove 31, cylinder seat plate 32, clamping claw cylinder 33, proximity sensor 34, magnet block 35. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1-Figure 5 As shown, the present invention relates to an automatic press-fitting device for a gas generator filter, lower cover, and lower shell ignition assembly, comprising a fixed platform 1, a graduated plate 22 driven by a servo motor 20 being fixed to the fixed platform 1, a circular rotating platform 21 being fixed to the turntable of the graduated plate 22, and multiple sets of positioning fixtures 18 being evenly distributed along the circumference of the rotating platform 21. This embodiment uses eight sets of positioning fixtures as an example. The positioning fixtures 18 are composed of three superimposed and connected positioning plates. A positioning hole is provided in the middle of the positioning plate at the upper end. The positioning hole is clearance-matched with the lower shell ignition assembly 17 to be assembled, and is used to place the lower shell ignition assembly 17 to be assembled.

[0024] A top plate 8 is fixed on the fixed platform 1 through two vertical columns 2 on one side of the rotating platform 21 and a center column 19 passing through the center hole of the index plate 22. A vertical press cylinder 11 is fixed on the top plate 8 through a transition plate 12 and a cylinder mounting plate 13 in sequence. The lower end of the piston rod of the press cylinder 11 passes through the top plate 8 and is connected to a press head mounting plate 14. A cylindrical press head 15 is fixed below the press head mounting plate 14. The axes of the press cylinder 11 and the press head 15 are aligned with the circumferential line of the positioning tool 18. Two magnet blocks 35 are symmetrically arranged on the lower end surface of the press head 15 on both sides of the center hole, which are used to attract the lower cover 26 to be assembled.

[0025] Two sets of guide assemblies are symmetrically arranged on the cylinder mounting plate 13 on both sides of the press cylinder 11. Each set of guide assemblies is composed of a linear bearing 9 fixed on the cylinder mounting plate 13 and a guide column 10 passing through the inner cavity of the linear bearing 9. The lower end of the guide column 10 passes through the cylinder mounting plate 13, the transition plate 12 and the top plate 8 and is connected to the two ends of the press head mounting plate 14, which is used to realize the up and down movement of the press head mounting plate 14.

[0026] An L-shaped support plate 7 is fixed on the upper part of the two vertical columns 2 through a clamping plate and bolts. A slide rail groove 31 is fixed on the support plate 7 near the press head 15. A guide cylinder 30 and a slide rail 29 are installed in the vertical direction on the slide rail groove 31. A cylinder seat plate 32 is connected between the lower end of the piston rod of the guide cylinder 30 and the slide rail 29. A clamping jaw cylinder 33 is fixed below the cylinder seat plate 32 and arranged horizontally. Two clamping arms 25 are symmetrically fixed on the two clamping jaws in front of the clamping jaw cylinder 33. The inner sides of the two clamping arms 25 are respectively provided with V-shaped clamping openings, which are used to clamp the filter screen 16 to be assembled, so that the filter screen 16 is coaxial with the lower shell ignition assembly and the lower cover, preventing the filter screen 16 from being crushed. When the press cylinder 11 is reset, the press head 15 prevents the assembled assembly from being lifted. A buffer plate 27 is fixed on the upper end of the slide rail 29. A buffer 28 is installed on the buffer plate 27. When the guide cylinder 30 is extended to the position, the buffer 28 is pressed on the slide rail groove 31, which is used to buffer the extension of the guide cylinder 30.

[0027] An proximity sensor 34 is fixed on the fixed disc in the center of the index plate 22 through an L-shaped sensor support. When one set of positioning tools 18 rotates directly below the press head 15, it corresponds to the proximity sensor 34, which is used to detect whether the positioning tool 18 is rotated to the position.

[0028] A fixing plate 23 is connected to the bottom surface of the pressure head mounting plate 14 close to the side of the column 2, and a displacement pressure head 24 is fixed on the fixing plate 23. A vertically arranged displacement sensor 3 is fixed below the corresponding displacement pressure head 24 on one of the columns 2 through a fixing seat clamped on the column 2. When the pressure head 15 is pressed down into place, the displacement pressure head 24 compresses the displacement sensor 3 to detect whether the press-fitting cylinder 11 is pressed into place.

[0029] A sensor holder is fixed on one of the columns 2, and a first photoelectric sensor 4 and a second photoelectric sensor 5 are installed on the sensor holder respectively. The first photoelectric sensor 4 points to the pressure head 15 obliquely upward and is used to detect whether the lower cover 26 is installed at the lower end of the pressure head 15; the second photoelectric sensor 5 points to the positioning tooling 18 obliquely downward and is used to detect whether the filter is installed.

[0030] Two vertically arranged safety gratings 6 are fixed on the front side of the top plate 8. The two safety gratings 6 correspond to each other and are used to prevent human hands from entering during press assembly to ensure the safety of operators.

[0031] The device is also provided with an interconnected controller and a human-machine interface (not shown in the figure). The controller is a PLC programmable controller. The signal output ends of the safety grating 6 and each sensor are respectively communicated with the controller for controlling the actions of each cylinder and servo motor 20 and setting working parameters through the human-machine interface.

[0032] During operation, the filter 16 to be assembled is first inserted into the lower shell ignition assembly 17, and then the lower shell ignition assembly 17 is placed in the positioning hole in the middle of the positioning fixture 18. The lower cover 26 to be assembled is placed on the lower end of the pressure head 15 and attracted by the magnet block 35. The device button is turned on, and the servo motor 20 drives the indexing plate 22 to drive the rotating platform 21 to start rotating. When the proximity sensor 34 detects that the positioning fixture 18 has rotated into place, the controller controls the servo motor 20 to stop rotating. After the first photoelectric sensor 4 and the second photoelectric sensor 5 respectively detect that the lower cover 26 and the filter 16 are installed in place, the controller controls the guide cylinder 30 to extend, driving the clamping cylinder 33 to drive the two clamping arms 25 to move downward close to the filter 16. After the clamping cylinder 33 is in place, the two clamping arms 25 clamp the filter 16, and then the pressing cylinder 11 is controlled to extend, pushing the pressure head 15 downward until the lower cover 26 is pressed into the filter 16 and the lower shell ignition assembly 17.

[0033] When the displacement head 24 compresses the displacement sensor 3 until the displacement sensor detects that the displacement meets the setting, the press cylinder 11 stops pressing and resets, and then the controller controls the clamping cylinder 33 and the guide cylinder 30 to reset in sequence, completing a cycle of work. The press-fitted structure is as follows: Figure 6Subsequently, the servo motor 20 is restarted, driving the rotating platform 21 to rotate to the next station and then stop, repeating the above operation to automatically press-fit the gas generator filter, lower cover and lower shell ignition assembly at the next station.

[0034] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An automatic press-fitting device for the filter screen, lower cover, and lower shell ignition assembly of a gas generator, including a fixed platform, characterized by: A dividing plate driven by a servo motor is provided on the fixed platform, a circular rotating platform is fixed on the turntable of the dividing plate, and multiple sets of positioning fixtures are evenly distributed along the circumference of the rotating platform for placing the lower shell ignition assembly to be assembled; A top plate is fixed on the fixed platform through the columns and the center column, a press cylinder is fixed in the middle of the top plate, the lower end of the piston rod of the press cylinder passes through the top plate and is connected to the press head mounting plate, a press head is installed under the press head mounting plate, the axes of the press cylinder and the press head are aligned with the circumferential line of the positioning tooling, and magnet blocks are symmetrically provided on the lower end surface of the press head for attracting the lower cover to be assembled; A support plate is fixed on the column, a slide rail groove is fixed on the support plate, a guide cylinder and a slide rail are installed on the slide rail groove in the vertical direction, a cylinder seat plate is connected between the lower end of the piston rod of the guide cylinder and the slide rail, a clamping cylinder is fixed under the cylinder seat plate, and two clamping arms are symmetrically provided at the front end of the clamping cylinder for clamping the filter to be assembled.

2. The automatic press-fitting device for the gas generator filter, lower cover and lower shell ignition assembly according to claim 1, characterized in that: There are two upright columns located on one side of the rotating platform, and there is one central column which passes through the central hole of the dividing plate and is fixed on the fixed platform.

3. The automatic press-fitting device for the gas generator filter, lower cover and lower shell ignition assembly according to claim 1, characterized in that: A proximity sensor is fixed on the fixed plate in the center of the indexing plate through a sensor bracket. When one set of positioning fixtures rotates to the bottom of the pressure head, it corresponds to the proximity sensor to detect whether the positioning fixtures are rotated into place.

4. The automatic press-fitting device for the filter screen, lower cover and lower shell ignition assembly of the gas generator according to claim 1, characterized in that: A fixed plate is provided on the side of the pressure head mounting plate close to the column, a displacement pressure head is fixed on the fixed plate, and a displacement sensor is fixed on the column below the corresponding displacement pressure head. When the pressure head is pressed down into place, the displacement pressure head compresses the displacement sensor to detect whether the press-fitting cylinder is pressed into place.

5. The automatic press-fitting device for the gas generator filter, lower cover and lower shell ignition assembly according to claim 1, characterized in that: A sensor support is fixed on one of the columns, and a first photoelectric sensor and a second photoelectric sensor are respectively installed on the sensor support. The first photoelectric sensor points to the pressure head obliquely upwards and is used to detect whether the lower cover is installed; The second photoelectric sensor points to the positioning tooling obliquely downward to detect whether the filter is installed properly.

6. The automatic press-fitting device for the gas generator filter, lower cover and lower shell ignition assembly according to any one of claims 1 to 5, characterized in that: The device is also provided with a controller and a human-machine interface. The controller is a PLC programmable controller. The signal output ends of the various sensors are respectively connected to the controller for communication and are used to control the actions of the various cylinders and servo motors.

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