A thin film direct stroke pneumatic actuator assembly line

Abstract

The present application relates to the technical field of actuator production line, and specifically provides a thin film type straight stroke pneumatic actuator assembly production line, which comprises a closed loop rectangular conveying line, a plurality of assembly supports alternately cooperating are arranged on the rectangular conveying line; a pre-buried nut mechanism, a support feeding mechanism, a lower membrane cover feeding mechanism, a primary bolt tightening mechanism, a combined part feeding mechanism, a spring seat feeding mechanism, a spring feeding mechanism, an upper membrane cover feeding mechanism, a secondary bolt tightening mechanism and an actuator discharging mechanism are sequentially arranged on the outer side of the rectangular conveying line; the thin film type straight stroke pneumatic actuator assembly process is connected in series by the rectangular conveying line to form a closed loop structure, continuous and high-speed product assembly can be realized, the assembly time is significantly shortened, the assembly production efficiency is improved, and reliable technical support is provided for large-scale industrial production of the thin film type straight stroke pneumatic actuator.

Description

Technical Field

[0001] This invention relates to the field of actuator production line technology, and specifically to a diaphragm-type linear pneumatic actuator assembly line. Background Technology

[0002] A diaphragm-type linear pneumatic actuator is a device that uses air pressure to drive the deformation of a diaphragm to achieve linear motion. It features a compact structure, fast response speed, and high control precision, and is widely used in the field of automation control. Its core components include a diaphragm, spring, push rod, upper and lower diaphragm covers, and a support frame. Assembly requires the completion of component assembly and bolt tightening of the actuator support frame, lower diaphragm cover, assembly parts, spring seat, spring, and upper diaphragm cover.

[0003] In the existing technology, the assembly of such actuators mainly relies on manual operation, which has the following problems:

[0004] 1. Manual assembly is cumbersome, and the connection between each process depends on manual handling and positioning, which takes a long time and is difficult to meet the needs of large-scale production.

[0005] 2. Manual operation is susceptible to fatigue and skill level, leading to fluctuations in product quality;

[0006] 3. Labor costs continue to rise, and manual assembly is prone to safety hazards, further increasing management costs.

[0007] Although some automated equipment has been applied in industrial assembly, there is still a lack of dedicated production lines for diaphragm-type linear pneumatic actuators. For example, existing production lines are mostly linearly laid out, which cannot achieve closed-loop continuous production; the automated mechanisms have limited functions and cannot cover multi-process collaborative operations; and there is a lack of efficient feeding and positioning solutions for precision components (such as springs and nuts).

[0008] Therefore, there is an urgent need for a highly integrated and modular automated assembly line to solve the aforementioned technical bottlenecks. Summary of the Invention

[0009] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a diaphragm-type linear pneumatic actuator assembly line. This line utilizes a rectangular conveyor to connect the nut loading process, bracket loading process, lower diaphragm cover loading process, primary bolt tightening process, assembly component loading process, spring seat loading process, spring loading process, upper diaphragm cover loading process, secondary bolt tightening process, and actuator unloading process in a closed-loop structure. This allows the assembly line to have a highly integrated and modular design, enabling collaborative operation between multiple processes. It achieves continuous and high-speed product assembly, significantly shortening assembly time and improving assembly production efficiency. This solves the problems of low production efficiency, large quality fluctuations, and high labor costs associated with manual operation in existing actuator assembly technologies. Furthermore, the pre-embedded nut mechanism used in this invention, driven by a rotary motor and a circular turntable in conjunction with a pushing cylinder, enables precise feeding of nuts and washers. The conical end and expansion groove design of the picking head ensures the stability of component gripping and placement, reducing assembly errors.

[0010] To achieve the above and other related objectives, the present invention provides a diaphragm-type linear pneumatic actuator assembly line, the assembly line comprising a closed-loop rectangular conveyor line, on which multiple assembly supports are provided for alternating operation;

[0011] Along the outer side of the rectangular conveyor line are arranged in sequence:

[0012] The pre-embedded nut mechanism includes a nut feeding module and a nut loading module located above the nut feeding module. The pre-embedded nut mechanism is used to pre-embed the nut in the upper end of the assembly bracket.

[0013] A bracket loading mechanism is used to load the actuator bracket onto the assembly bracket;

[0014] A lower film cover feeding mechanism is used to load the lower film cover onto the actuator bracket;

[0015] A primary bolt tightening mechanism is used to tighten bolts between the lower film cover feeder and the actuator bracket;

[0016] Assembly feeding mechanism, the assembly feeding mechanism is used to load the assembly into the upper end of the lower film cover;

[0017] A spring seat feeding mechanism is used to load spring seats into the assembly.

[0018] A spring feeding mechanism, used to load springs into spring seats;

[0019] The upper film cover feeding mechanism is used to cover the upper film cover with the upper film cover at the upper end of the lower film cover;

[0020] A secondary bolt tightening mechanism is used to engage with a pre-embedded nut to tighten the bolt, thereby securing the upper membrane cover relative to the lower membrane cover and assembling the actuator product.

[0021] An actuator unloading mechanism is used to remove assembled actuator products from a rectangular conveyor line.

[0022] In one embodiment of the present invention, the rectangular conveyor line adopts two parallel rectangular conveyor rails, and the assembly bracket is suspended between the two parallel rectangular conveyor rails.

[0023] In one embodiment of the present invention, the assembly bracket includes a bottom support frame and an annular frame connected above the bottom support frame by a connecting rod, and the upper end of the annular frame is provided with a plurality of nut placement slots.

[0024] In one embodiment of the present invention, the nut feeding module includes:

[0025] Rotary electric motor;

[0026] A circular turntable is mounted on the output end of a rotary motor. Several feeding positions are equidistantly arranged along the outer periphery of the turntable. Two vertically cooperating pusher cylinders are provided on the outer side and below two of the feeding positions.

[0027] A vibratory nut feeder, wherein the discharge end of the vibratory nut feeder extends directly below one of the feeding positions equipped with a pusher cylinder;

[0028] A vibrating feeder for gaskets, wherein the discharge end of the vibrating feeder extends directly below the feeding position of another set pusher cylinder.

[0029] In one embodiment of the present invention, the nut feeding module includes:

[0030] First horizontal linear module;

[0031] A first vertical linear module installed at the movable end of a first horizontal linear module;

[0032] A material picking tray is installed at the movable end of the first vertical straight module. The material picking tray is provided with a number of material picking heads that are the same number as the material loading positions and are corresponding in position.

[0033] In one embodiment of the present invention, the lower end of the material taking head is provided with a tapered end, and the material taking head is provided with an expansion groove extending to the lower end face of the tapered end.

[0034] In one embodiment of the present invention, a first cylinder is installed at the lower end of the material picking disc, an annular baffle is installed at the output end of the first cylinder, and the conical end of the material picking head extends downward through the annular baffle.

[0035] In one embodiment of the present invention, the bracket feeding mechanism, the lower film cover feeding mechanism, the assembly feeding mechanism, the spring seat feeding mechanism, the spring feeding mechanism, the upper film cover feeding mechanism, and the actuator unloading mechanism have the same structure, all including:

[0036] Second horizontal linear module;

[0037] A second vertical linear module is mounted on the movable end of the second horizontal linear module;

[0038] Cylinder grippers mounted on the movable end of the second vertical linear module;

[0039] And a material rack located on one side of the second horizontal linear module.

[0040] In one embodiment of the present invention, the primary bolt tightening mechanism includes:

[0041] Third horizontal linear module;

[0042] A fourth horizontal linear module is installed at the movable end of the third horizontal linear module and is perpendicular to the third horizontal linear module;

[0043] The third vertical linear module is installed at the movable end of the fourth horizontal linear module;

[0044] The first electric screwdriver is installed at the movable end of the third vertical linear module.

[0045] In one embodiment of the present invention, the secondary bolt tightening mechanism includes:

[0046] Second rotary motor;

[0047] The fourth vertical linear module is mounted on the output end of the rotary motor;

[0048] The second electric screwdriver is installed at the movable end of the fourth vertical linear module.

[0049] As described above, the thin-film linear pneumatic actuator assembly line of the present invention has the following beneficial effects:

[0050] 1. This invention, by setting up a closed-loop rectangular conveyor line and several alternating assembly supports, in conjunction with a pre-embedded nut mechanism, a support feeding mechanism, a lower film cover feeding mechanism, a primary bolt tightening mechanism, an assembly feeding mechanism, a spring seat feeding mechanism, a spring feeding mechanism, an upper film cover feeding mechanism, a secondary bolt tightening mechanism, and an actuator unloading mechanism, can realize multi-station parallel operation of the actuator assembly production line, significantly shorten the assembly cycle of actuator products, and improve overall production efficiency.

[0051] 2. The pre-embedded nut mechanism uses a rotary motor to drive a circular turntable in conjunction with a pusher cylinder to achieve precise feeding of nuts and washers; the tapered end and expansion groove design of the picking head ensures the stability of component gripping and placement, reducing assembly errors.

[0052] 3. This invention integrates automated mechanisms for key processes such as pre-embedded nuts, component feeding, and bolt tightening. It is designed to work in conjunction with structures such as vibratory feeders, linear modules, and electric screw machines, which can minimize manual intervention and ensure the consistency and reliability of the assembly process.

[0053] 4. This invention utilizes a rectangular conveyor line to connect the assembly process of the diaphragm linear pneumatic actuator in series to form a closed loop structure, which enables continuous and high-speed product assembly, significantly shortens assembly time, improves assembly production efficiency, effectively solves the problems of low efficiency and unstable quality in traditional manual assembly, greatly reduces labor costs, and reduces scrap rate through closed-loop quality control, thereby comprehensively improving production economic benefits and providing reliable technical support for the large-scale industrial production of diaphragm linear pneumatic actuators. Attached Figure Description

[0054] Figure 1 The diagram shown is an overall structural schematic of the assembly line for the thin-film linear pneumatic actuator disclosed in this invention.

[0055] Figure 2 The diagram shown is a top view of the assembly line for the thin-film linear pneumatic actuator disclosed in this invention.

[0056] Figure 3 The diagram shows an enlarged view of the actuator products in multiple assembly states on a rectangular conveyor line in the assembly production line of the thin-film linear pneumatic actuator disclosed in this invention.

[0057] Figure 4 The diagram shown is an enlarged structural schematic of the pre-embedded nut mechanism in the assembly line of the diaphragm-type linear pneumatic actuator disclosed in this invention.

[0058] Figure 5 Displayed as Figure 4 Enlarged view of the nut feeding module.

[0059] Figure 6 Displayed as Figure 4 Enlarged view of the nut feeding module.

[0060] Figure 7 The diagram shown is an enlarged structural schematic of the support feeding mechanism in the assembly line of the diaphragm-type linear pneumatic actuator disclosed in this invention.

[0061] Figure 8The diagram shown is an enlarged structural schematic of the primary bolt tightening mechanism in the assembly line of the diaphragm-type linear pneumatic actuator disclosed in this invention.

[0062] Figure 9 The diagram shown is an enlarged structural schematic of the secondary bolt tightening mechanism in the assembly line of the diaphragm-type linear pneumatic actuator disclosed in this invention.

[0063] Component designation explanation

[0064] 1. Rectangular conveyor line; 2. Assembly bracket; 21. Bottom support frame; 22. Ring frame; 23. Nut placement slot; 3. Embedded nut mechanism; 31. Nut feeding module; 311. Rotary motor; 312. Circular turntable; 3121. Feeding position; 3122. Pushing cylinder; 313. Nut vibrating feeder; 314. Washer vibrating feeder; 32. Nut feeding module; 321. First horizontal linear module; 322. First vertical linear module; 323. Picking tray; 3231. Picking head; 324. First cylinder; 325. Circular baffle; 4. Bracket feeding mechanism; 5. Lower film cover 5. Feeding mechanism; 6. Primary bolt tightening mechanism; 61. Third horizontal linear module; 62. Fourth horizontal linear module; 63. Third vertical linear module; 64. First electric screw machine; 7. Assembly feeding mechanism; 8. Spring seat feeding mechanism; 9. Spring feeding mechanism; 10. Upper film cover feeding mechanism; 11. Secondary bolt tightening mechanism; 111. Second rotary motor; 112. Fourth vertical linear module; 113. Second electric screw machine; 12. Actuator unloading mechanism; 13. Second horizontal linear module; 14. Second vertical linear module; 15. Cylinder gripper; 16. Material rack. Detailed Implementation

[0065] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0066] Please see Figures 1 to 9 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0067] Example 1, please refer to Figures 1-3 This embodiment provides a diaphragm-type linear pneumatic actuator assembly line. The assembly line includes a closed-loop rectangular conveyor line 1, on which multiple assembly supports 2 are provided for alternating operations. The rectangular conveyor line 1 uses two parallel rectangular conveyor rails. It should be noted that in the actual production line, the rectangular conveyor line 1 also includes a chain, drive device, slide, positioning accessories, motor, and supports. The rectangular conveyor rails are formed by splicing linear and circular rails to form a closed-loop structure. The chain acts as the traction and load-bearing body, transmitting power through sprockets to drive the slide to circulate on the annular rails. This structure is a mature industrial application and will not be described in detail here. The assembly support 2 includes a bottom support frame 21 and an annular frame 22 connected above the bottom support frame 21 by a connecting rod. The upper end of the annular frame 22 is provided with several nut placement slots 23. The assembly support 2 is suspended between the two parallel rectangular conveyor rails. Along the outer side of the rectangular conveyor line 1, a pre-embedded nut mechanism 3, a bracket feeding mechanism 4, a lower membrane cover feeding mechanism 5, a primary bolt tightening mechanism 6, an assembly feeding mechanism 7, a spring seat feeding mechanism 8, a spring feeding mechanism 9, an upper membrane cover feeding mechanism 10, a secondary bolt tightening mechanism 11, and an actuator unloading mechanism 12 are sequentially arranged. This invention utilizes the rectangular conveyor line 1 to connect the assembly processes of the diaphragm-type linear pneumatic actuator in series, forming a closed-loop structure. This enables continuous, high-speed product assembly, significantly shortening assembly time and improving assembly production efficiency.

[0068] Example 2, please refer to Figures 4-6Based on Embodiment 1, the pre-embedded nut mechanism 3 includes a nut feeding module 31 and a nut loading module 32 located above the nut feeding module 31. The pre-embedded nut mechanism 3 is used to pre-embed nuts in the upper end of the assembly bracket 2. Specifically, the nut feeding module 31 includes a rotary motor 311, a circular turntable 312, a nut vibrating feeder 313, and a gasket vibrating feeder 314. The circular turntable 312 is mounted on the output end of the rotary motor 311. Several loading positions 3121 are equidistantly arranged along the outer periphery of the circular turntable 312. Two vertically cooperating pusher cylinders 3122 are provided on the outer side and below two of the loading positions 3121. The discharge end of the nut vibrating feeder 313 extends directly below one of the loading positions 3121 where the pusher cylinder 3122 is located. The discharge end of the gasket vibrating feeder 314 extends directly below the loading position 3121 where the pusher cylinder 3122 is located. The nut feeding module 32 includes a first horizontal linear module 321, a first vertical linear module 322 mounted on the movable end of the first horizontal linear module 321, and a feeding tray 323 mounted on the movable end of the first vertical linear module 322. The first horizontal linear module 321 is mounted by profile support, and the linear transmission direction of the first horizontal linear module 321 is perpendicular to the transmission direction of the rectangular conveyor line 1. The feeding tray 323 is provided with a plurality of feeding heads 3231, which are the same number as the feeding positions 3121 and correspond to their positions. The lower end of the material picker is provided with a tapered end, and the material picker head 3231 is provided with an expansion groove extending to the lower end face of the tapered end; the lower end of the material picker head 3231 is equipped with a first cylinder 324, and the output end of the first cylinder 324 is equipped with an annular baffle 325. The tapered end of the material picker head 3231 extends downward through the annular baffle 325; the material picker head 323 is driven to move back and forth between the nut feeding module 31 and the rectangular conveyor line 1 by the first horizontal linear module 321, and the material picker head 323 is driven to move downward to pick up materials and feed materials to the assembly bracket 2 by the first vertical linear module 322. In this embodiment, the pre-embedded nut mechanism 3 is used in conjunction with the pusher cylinder 312 by the rotary motor 311 driving the circular turntable 312, which can realize the precise feeding of nuts and washers; the tapered end and expansion groove design of the material picker head 3231 can ensure the stability of component gripping and placement and reduce assembly errors.

[0069] Example 3, please refer to Figure 7Based on Embodiment 1, the bracket loading mechanism 4, the lower film cover loading mechanism 5, the assembly loading mechanism 7, the spring seat loading mechanism 8, the spring loading mechanism 9, the upper film cover loading mechanism 10, and the actuator unloading mechanism 12 have the same structure, all including a second horizontal linear module 13, a second vertical linear module 14 mounted on the movable end of the second horizontal linear module 13, a cylinder gripper 15 mounted on the movable end of the second vertical linear module 14, and a material rack 16 located on one side of the second horizontal linear module 13; the linear transmission direction of the second horizontal linear module 13 is parallel to the rectangular transmission direction. The transmission direction of the feed line 1 is perpendicular to that of the other feed line; the actuator bracket loading mechanism 4 is used to load the actuator bracket onto the assembly bracket 2; the lower film cover loading mechanism 5 is used to load the lower film cover onto the actuator bracket; the assembly loading mechanism 7 is used to load the assembly onto the upper end of the lower film cover; the spring seat loading mechanism 8 is used to load the spring seat into the assembly; the spring loading mechanism 9 is used to load the spring into the spring seat; the upper film cover loading mechanism 10 is used to close the upper film cover onto the upper end of the lower film cover; the actuator unloading mechanism 12 is used to remove the assembled actuator product from the rectangular feed line 1.

[0070] Example 4, please refer to Figure 8 Based on Embodiment 1, the primary bolt tightening mechanism 6 includes a third horizontal linear module 61, a fourth horizontal linear module 62 mounted on the movable end of the third horizontal linear module 61 and perpendicular to the third horizontal linear module 61, a third vertical linear module 63 mounted on the movable end of the fourth horizontal linear module 62, and a first electric screwdriver 64 mounted on the movable end of the third vertical linear module 63. The linear transmission direction of the third horizontal linear module 61 is parallel to the transmission direction of the rectangular conveyor line 1. The primary bolt tightening mechanism 6 forms a triaxial spatial displacement platform through the cooperation of the third horizontal linear module 61, the fourth horizontal linear module 62, and the third vertical linear module 63, driving the first electric screwdriver 64 to screw bolts between the lower film cover loading and the actuator bracket.

[0071] Example 5, please refer to Figure 9 Based on Embodiment 1, the secondary bolt tightening mechanism 11 includes a second rotary motor 111, a fourth vertical linear module 112 mounted on the output end of the second rotary motor 111, and a second electric screwdriver 113 mounted on the movable end of the fourth vertical linear module 112. The secondary bolt tightening mechanism 11 drives the second electric screwdriver 113 to rotate and lift in cooperation with the second rotary motor 111 and the fourth vertical linear module 112 to screw in the bolts with the pre-embedded nuts, so as to fix the upper membrane cover relative to the lower membrane cover and assemble the actuator product.

[0072] As should be noted in Examples 4 and 5, both the first electric screwdriver 64 and the second electric screwdriver 113 adopt automated screw-locking machinery. Their operating structure can generally be divided into two parts: a feeding part and an electric screwdriver part. The feeding part is responsible for screening and providing screws, while the electric screwdriver part is responsible for picking up and locking screws. The screwdriver improves work efficiency and reduces the intensity of manual labor. This product is a mature industrial equipment and will not be described in detail here.

[0073] Example 6: Based on the above examples, the first horizontal linear module 321, the first vertical linear module 322, the second horizontal linear module 13, the second vertical linear module 14, the third horizontal linear module 61, the third vertical linear module 63, the fourth horizontal linear module 62, and the fourth vertical linear module 112 can all use the same linear module, including a module base, a linear guide rail on the module base, a slider that slides on the linear guide rail, a drive motor at one end of the module base, and a lead screw connected to the output end of the drive motor and meshing with the slider. The slider is the movable end of the linear module. The drive motor provides driving force to rotate the lead screw, which drives the slider meshing with the lead screw to move along the linear guide rail to achieve linear displacement of the linear module. The linear module is a mature machine on the market and will not be described in detail here.

[0074] In addition to setting up nut loading stations, bracket loading stations, lower membrane cover loading stations, primary bolt tightening stations, assembly loading stations, spring seat loading stations, spring loading stations, upper membrane cover loading stations, secondary bolt tightening stations, and actuator unloading stations, this invention also reserves at least one testing station. The testing station can perform tests on key parameters such as dead zone, hysteresis, stroke deviation, start and end point error, full stroke operation test, internal and external leakage detection, and start and end air source pressure according to GB4213 standards after the actuator product assembly is completed. The testing station is equipped with at least tooling, air source, and control / feedback signal facilities to facilitate further research and innovation in the assembly production line.

[0075] In summary, this invention utilizes a rectangular conveyor line 1 to connect the nut loading process, bracket loading process, lower membrane cover loading process, primary bolt tightening process, assembly loading process, spring seat loading process, spring loading process, upper membrane cover loading process, secondary bolt tightening process, and actuator unloading process into a closed-loop structure. This enables the assembly line to have a highly integrated and modular design, with collaborative operations between multiple processes, achieving continuous and high-speed product assembly, significantly shortening assembly time, improving assembly production efficiency, effectively solving the problems of low efficiency and unstable quality in traditional manual assembly, greatly reducing labor costs, and reducing scrap rate through closed-loop quality control, comprehensively improving production economic benefits. This provides reliable technical support for the large-scale industrial production of diaphragm-type linear pneumatic actuators. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0076] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A production line for assembling diaphragm-type linear pneumatic actuators, characterized in that, The assembly line includes a closed-loop rectangular conveyor line (1), on which multiple assembly supports (2) are provided for alternating operations. Along the outer side of the rectangular conveyor line (1), the following are arranged in sequence: The pre-embedded nut mechanism (3) includes a nut feeding module (31) and a nut loading module (32) located above the nut feeding module (31). The pre-embedded nut mechanism (3) is used to pre-embed the nut in the upper end of the assembly bracket (2). The bracket loading mechanism (4) is used to load the actuator bracket onto the assembly bracket (2); The lower film cover feeding mechanism (5) is used to load the lower film cover onto the actuator bracket; A primary bolt tightening mechanism (6) is used to tighten bolts between the lower film cover feeder and the actuator bracket; Assembly loading mechanism (7), the assembly loading mechanism (7) is used to load the assembly into the upper end of the lower film cover; Spring seat loading mechanism (8), the spring seat loading mechanism (8) is used to load the spring seat into the assembly; Spring feeding mechanism (9), which is used to load springs into spring seats; Upper film cover feeding mechanism (10), the upper film cover feeding mechanism (10) is used to cover the upper film cover with the upper end of the lower film cover; Secondary bolt tightening mechanism (11) is used to cooperate with the pre-embedded nut to tighten the bolt, so as to fix the upper membrane cover relative to the lower membrane cover and so that the actuator product is assembled. Actuator unloading mechanism (12) is used to remove the assembled actuator products from the rectangular conveyor line (1). The nut feeding module (31) includes: Rotary electric motor (311); A circular turntable (312) is mounted on the output end of a rotary motor (311). Several feeding positions (3121) are provided at equal intervals along the outer periphery of the circular turntable (312). Two vertically cooperating pusher cylinders (3122) are provided on the outer side and below of two of the feeding positions (3121). A nut vibratory feeder (313) has its discharge end extending directly below one of the feeding positions (3121) equipped with a pusher cylinder (3122); The gasket vibrating feeder (314) has its discharge end extending directly below the feeding position (3121) of another set pusher cylinder (3122); The nut feeding module (32) includes: First horizontal linear module (321); The first vertical linear module (322) is mounted on the movable end of the first horizontal linear module (321); A material picking tray (323) is installed at the movable end of the first vertical straight module (322). The material picking tray (323) is provided with a number of material picking heads (3231) that are the same number as the loading positions (3121) and corresponding to their positions. The lower end of the feeding head (3231) is provided with a tapered end, and the feeding head (3231) is provided with an expansion groove extending to the lower end face of the tapered end; The lower end of the feeding disc (3231) is equipped with a first cylinder (324), and the output end of the first cylinder (324) is equipped with an annular baffle (325). The conical end of the feeding head (3231) extends downward through the annular baffle (325).

2. The diaphragm-type linear pneumatic actuator assembly line according to claim 1, characterized in that: The rectangular conveyor line (1) uses two parallel rectangular conveyor rails, and the assembly bracket (2) is suspended between the two parallel rectangular conveyor rails.

3. The diaphragm-type linear pneumatic actuator assembly line according to claim 1, characterized in that: The assembly bracket (2) includes a bottom support frame (21) and an annular frame (22) connected above the bottom support frame (21) by a connecting rod. The upper end of the annular frame (22) is provided with several nut placement slots (23).

4. The diaphragm-type linear pneumatic actuator assembly line according to claim 1, characterized in that: The bracket loading mechanism (4), lower film cover loading mechanism (5), assembly loading mechanism (7), spring seat loading mechanism (8), spring loading mechanism (9), upper film cover loading mechanism (10), and actuator unloading mechanism (12) have the same structure and all include: Second horizontal linear module (13); The second vertical linear module (14) is installed at the movable end of the second horizontal linear module (13); Cylinder gripper (15) mounted on the movable end of the second vertical linear module (14); And a rack (16) located on one side of the second horizontal linear module (13).

5. The diaphragm-type linear pneumatic actuator assembly line according to claim 1, characterized in that, The primary bolt tightening mechanism (6) includes: Third horizontal linear module (61); A fourth horizontal linear module (62) is installed at the movable end of the third horizontal linear module (61) and is perpendicular to the third horizontal linear module (61). The third vertical linear module (63) is installed at the movable end of the fourth horizontal linear module (62); The first electric screwdriver (64) is installed at the movable end of the third vertical linear module (63).

6. The diaphragm-type linear pneumatic actuator assembly line according to claim 1, characterized in that, The secondary bolt tightening mechanism (11) includes: Second rotary motor (111); The fourth vertical linear module (112) is installed at the output end of the second rotary motor (111); The second electric screwdriver (113) is installed at the movable end of the fourth vertical linear module (112).

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