An automatic primer tightening device

Abstract

This invention proposes an automatic primer tightening device. The device includes an overall frame (50), and a cartridge case positioning and clamping mechanism (10), a primer tightening mechanism (20), a rotary pressing mechanism (30), and a primer screw-in depth detection mechanism (40) mounted on the overall frame (50). Specifically: the cartridge case positioning and clamping mechanism (10) is used to position and clamp the cartridge case (01); the primer tightening mechanism (20) is used to tighten the primer; the rotary pressing mechanism (30) is used to rotary press the primer; and the primer screw-in depth detection mechanism (40) is used to detect the primer screw-in depth. This invention utilizes automated primer tightening, which not only ensures the reliability, consistency, and safety of the primer products but also improves production efficiency and reduces the labor intensity of workers.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to an automatic primer tightening device. Background Technology

[0002] The primer is a critical component of the projectile fuse, and its assembly process is prone to serious risks of gunpowder explosion and electrostatic triggering explosion. Current technologies still largely rely on manual assembly, making it difficult to ensure product consistency. This is time-consuming, severely impacts production efficiency, and also results in issues such as mechanical pitting damaging the primer surface and difficulty in controlling torque, leading to bulging of the primer pit. Utility Model Content

[0003] The technical problem of this utility model is: Existing technologies cannot guarantee product consistency, which is time-consuming and seriously affects production efficiency. They also have problems such as mechanical pitting that scratches the primer surface and difficulty in controlling torque, which can lead to bulging of the primer pit.

[0004] The purpose of this utility model is: The present invention aims to design an automatic primer tightening device, which can not only ensure the reliability, consistency and safety of primer products, but also improve production efficiency and reduce the labor intensity of workers.

[0005] The technical solution of this utility model is: This project proposes an automatic primer tightening device. The device includes a cartridge case positioning and clamping mechanism (10), a primer tightening mechanism (20), a rotary pressing mechanism (30), a primer screw-in depth detection mechanism (40), and an overall frame (50). The platform (504) is fixedly connected to the frame (505). The pneumatic chuck (104) is fixedly connected to the chuck seat (102), the positioning rod (103) is threaded to the chuck seat (102) and fixed by a round nut, and the chuck seat (102) is fixedly connected to the platform (504) by a pull rod (101). The support (503) is fixedly connected to the platform (504), the support column (502) is fixedly connected to the support (503), and the upper platform (501) is fixedly connected to the support column (502). The explosion-proof servo reducer (201) is fixedly connected to the upper platform (501) via the motor mount (206), and the synchronous pulley II (207) is fixedly connected to the output shaft of the explosion-proof servo reducer (201). The mount (205) is fixedly connected to the upper platform (501), and the baffle (202) and the linear guide rail assembly (203) are fixedly connected to the mount (205). The bearing housing assembly (210) is fixedly connected to the linear guide assembly (203). The bearing housing assembly (210) is clearance-fitted to the ball spline shaft assembly (211). The ball spline shaft assembly (211) is fixedly connected to the upper platform (501). The detection disc assembly (204) is clearance-fitted to the ball spline shaft assembly (211). The synchronous pulley I (209) is fixedly connected to the ball spline shaft assembly (211). The tightening head (214) is fixedly connected to the ball spline shaft assembly (211) via the coupling (212) and the cover (213). The coupling (212) is fixedly connected to the cover (213). The rotary clamping cylinder (303) is fixedly connected to the upper platform (501) via the fixing plate (304). The cantilever (302) is fixedly connected to the rotary clamping cylinder (303). The push rod (301) is fixedly connected to the cantilever (302). The linear bearing (403) is fixedly connected to the upper platform (501), the detection rod I (406) is threadedly connected to the nut (404), the compression spring (405) passes through the detection rod I (406) and is clearance-fitted with the linear bearing (403), the sensor bracket (402) is fixedly connected to the detection rod I (406) through the nut, the distance sensor (401) is fixedly connected to the sensor bracket (402), the detection rod II (407) is fixedly connected to the detection rod I (406), and the detection positioning block (408) is fixedly connected to the detection rod II (407).The features are as follows: The cartridge case (01) is manually placed into the pneumatic clamp (104), and after being positioned by the positioning rod (103), the cartridge case (01) is pneumatically clamped. The detection positioning block (408) is manually placed on the cartridge case (01). At this time, the distance sensor (401) can detect the distance of the detection disc assembly (204). After the manual alignment of the tooth profile of the tightening head (214) with the tooth profile of the primer, the push rod (301) on the clamping cylinder (303) is rotated to press the detection disc assembly (204) to ensure that the tightening head (214) and the primer do not slip when tightened, thus providing explosion-proof servo deceleration. The machine (201) rotates, and through the synchronous pulley I (209), synchronous pulley II (207), and synchronous belt (208), the ball spline shaft assembly (211) rotates, driving the tightening head (214) to screw into the primer. When the distance sensor (401) detects the set screwing depth, it sends a stop signal to the explosion-proof servo reducer (201). At the same time, the push rod (301) on the rotating clamping cylinder (303) releases the detection disc assembly (204), and the pneumatic clamping plate (104) releases the cartridge case (01). The cartridge case (01) is then manually removed, completing one automatic primer tightening action.

[0006] The advantages and beneficial effects of this utility model are: a. This utility model realizes automated assembly technology through PLC control system, depth detection mechanism and servo motor, reducing the labor intensity of workers.

[0007] b. This utility model uses a programmable controller as the main controller to ensure product consistency.

[0008] c. This utility model uses a servo motor to control the tightening torque, which is convenient to adjust.

[0009] d. In the process of tightening the primer, this utility model adopts a rotary clamping mechanism to reliably ensure that the tightening head is in real-time contact with the primer during the tightening process.

[0010] e. This utility model adopts a fixed pneumatic chuck device to ensure that the paint layer of the cartridge is not damaged and that the cartridge case is reliably clamped.

[0011] In summary, this utility model adopts an automated production process with automatic primer tightening, which not only ensures the reliability, consistency, and safety of primer products, but also improves production efficiency and reduces the labor intensity of workers. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is the overall structure I of the automatic bottom-fire tightening device of this utility model; Figure 2 This is the overall structure II of the automatic bottom-fire tightening device of this utility model; Among them, the cartridge case (01), cartridge case positioning and clamping mechanism (10), primer tightening mechanism (20), rotary pressing mechanism (30), primer screwing depth detection mechanism (40), overall frame (50), pull rod (101), chuck seat (102), positioning rod (103), pneumatic chuck (104), explosion-proof servo reducer (201), baffle (202), linear guide rail assembly (203), detection disc assembly (204), seat (205), motor seat (206), synchronous pulley II (207), synchronous belt (208), synchronous pulley I (209), bearing seat assembly (210) Ball spline shaft assembly (211) Coupling (212) Cover (213) Tightening head (214) Top rod (301) Cantilever (302) Rotary clamping cylinder (303) Fixing plate (304) Distance sensor (401) Sensor bracket (402) Linear bearing (403) Nut (404) Compression spring (405) Detection rod I (406) Detection rod II (407) Detection positioning block (408) Upper platform (501) Column (502) Support (503) Platform (504) Frame (505). Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] It should be noted that, where there is no conflict, the embodiments of this utility model and the features therein can be combined with each other, and the various embodiments can be referenced and cited in turn. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] Please also refer to Figure 1 , Figure 2 This utility model relates to an automatic primer tightening device and tightening method. The device includes a cartridge positioning and clamping mechanism (10), a primer tightening mechanism (20), a rotary pressing mechanism (30), a primer screwing depth detection mechanism (40), and an overall frame (50).

[0017] The cartridge case positioning and clamping mechanism (10) includes: a pull rod (101), a clamping plate seat (102), a positioning rod (103), and a pneumatic clamping plate (104). The primer tightening mechanism (20) includes: an explosion-proof servo reducer (201), a baffle (202), a linear guide rail assembly (203), a detection disc assembly (204), a seat (205), a motor seat (206), a synchronous pulley II (207), a synchronous belt (208), a synchronous pulley I (209), a bearing seat assembly (210), a ball spline shaft assembly (211), a coupling (212), a cover (213), and a tightening head (214). The rotary clamping mechanism (30) includes: a push rod (301), a cantilever (302), a rotary clamping cylinder (303), and a fixing plate (304). The primer screw-in depth detection mechanism (40) includes: a distance sensor (401), a sensor bracket (402), a linear bearing (403), a nut (404), a compression spring (405), a detection rod I (406), a detection rod II (407), and a detection positioning block (408). The overall frame (50) includes: an upper platform (501), a support column (502), a support (503), a platform (504), and a frame (505).

[0018] In some embodiments, an automatic primer tightening device is assembled as follows: a platform (504) is fixedly connected to a frame (505). A pneumatic chuck (104) is fixedly connected to a chuck seat (102), a positioning rod (103) is threadedly connected to the chuck seat (102) and fixed with a round nut, and the chuck seat (102) is fixedly connected to the platform (504) via a pull rod (101). A support (503) is fixedly connected to the platform (504), a support column (502) is fixedly connected to the support (503), and an upper platform (501) is fixedly connected to the support column (502). An explosion-proof servo reducer (201) is fixedly connected to the upper platform (501) via a motor mount (206), and a synchronous pulley II (207) is fixedly connected to the output shaft of the explosion-proof servo reducer (201). The seat (205) is fixedly connected to the upper platform (501), and the baffle (202) and the linear guide rail assembly (203) are fixedly connected to the seat (205). The bearing seat assembly (210) is fixedly connected to the linear guide rail assembly (203), the bearing seat assembly (210) is clearance-fitted to the ball spline shaft assembly (211), the ball spline shaft assembly (211) is fixedly connected to the upper platform (501), the detection disc assembly (204) is clearance-fitted to the ball spline shaft assembly (211), the synchronous pulley I (209) is fixedly connected to the ball spline shaft assembly (211), the tightening head (214) is fixedly connected to the ball spline shaft assembly (211) through the coupling (212) and the cover (213), and the coupling (212) is fixedly connected to the cover (213). The rotary clamping cylinder (303) is fixedly connected to the upper platform (501) via the fixing plate (304), the cantilever (302) is fixedly connected to the rotary clamping cylinder (303), and the top rod (301) is fixedly connected to the cantilever (302). The linear bearing (403) is fixedly connected to the upper platform (501), the detection rod I (406) is threadedly connected to the nut (404), the compression spring (405) passes through the detection rod I (406) and is clearance-fitted to the linear bearing (403), the sensor bracket (402) is fixedly connected to the detection rod I (406) via the nut, the distance sensor (401) is fixedly connected to the sensor bracket (402), the detection rod II (407) is fixedly connected to the detection rod I (406), and the detection positioning block (408) is fixedly connected to the detection rod II (407).

[0019] In some embodiments, the tightening method includes the following steps: Step 1: Manually place the cartridge case (01) into the pneumatic clamp (104), and after positioning by the positioning rod (103), pneumatically clamp the cartridge case (01). Manually place the detection positioning block (408) on the cartridge case (01). At this time, the distance sensor (401) can detect the distance of the detection disk assembly (204). Step 2: After manually aligning the tooth profile of the tightening head (214) with that of the primer, rotate the push rod (301) on the clamping cylinder (303) to press the detection disc assembly (204) to ensure that the tightening head (214) and the primer do not slip when tightening. Give the explosion-proof servo reducer (201) a rotation signal, and through the synchronous pulley I (209), synchronous pulley II (207), and synchronous belt (208), make the ball spline shaft assembly (211) rotate to drive the tightening head (214) to tighten into the primer. When the distance sensor (401) detects the set tightening depth, give the explosion-proof servo reducer (201) a stop signal. At the same time, rotate the push rod (301) on the clamping cylinder (303) to release the detection disc assembly (204), and the pneumatic clamp (104) releases the cartridge (01). Manually remove the cartridge (01) to complete one automatic primer tightening action.

[0020] In some embodiments, the cartridge case (01) is introduced manually into 1.5-2 threads by introducing the primer.

[0021] In some embodiments, the pneumatic chuck (104) is fixedly connected to the chuck seat (102), the positioning rod (103) is threadedly connected to the chuck seat (102) and fixed by a round nut, and the chuck seat (102) is fixedly connected to the platform (504) by a pull rod (101) to form a cartridge positioning and clamping mechanism (10).

[0022] In some embodiments, the explosion-proof servo reducer (201) is fixedly connected to the upper platform (501) via the motor base (206), the synchronous pulley II (207) is fixedly connected to the output shaft of the explosion-proof servo reducer (201), the synchronous pulley I (209) and the synchronous pulley II (207) are connected via the synchronous belt (208), the base (205) is fixedly connected to the upper platform (501), and the baffle (202) and the linear guide rail assembly (203) are fixedly connected to the base (205). The bearing housing assembly (210) is fixedly connected to the linear guide assembly (203), the bearing housing assembly (210) is clearance-fitted to the ball spline shaft assembly (211), the ball spline shaft assembly (211) is fixedly connected to the upper platform (501), the detection disc assembly (204) is clearance-fitted to the ball spline shaft assembly (211), the synchronous pulley I (209) is fixedly connected to the ball spline shaft assembly (211), the tightening head (214) is fixedly connected to the ball spline shaft assembly (211) through the coupling (212) and the cover (213), and the coupling (212) and the cover (213) are fixedly connected to form the bottom tightening mechanism (20).

[0023] In some embodiments, the rotary clamping cylinder (303) is fixedly connected to the upper platform (501) via a fixed plate (304), the cantilever (302) is fixedly connected to the rotary clamping cylinder (303), and the push rod (301) is fixedly connected to the cantilever (302) to form a rotary clamping mechanism (30).

[0024] In some embodiments, the linear bearing (403) is fixedly connected to the upper platform (501), the detection rod I (406) is threadedly connected to the nut (404), the compression spring (405) passes through the detection rod I (406) and is clearance-fitted with the linear bearing (403), the sensor bracket (402) is fixedly connected to the detection rod I (406) by the nut, the distance sensor (401) is fixedly connected to the sensor bracket (402), the detection rod II (407) is fixedly connected to the detection rod I (406), and the detection positioning block (408) is fixedly connected to the detection rod II (407) to form the bottom screw-in depth detection mechanism (40).

[0025] In some embodiments, the platform (504) is fixedly connected to the frame (505), the support (503) is fixedly connected to the platform (504), the pillar (502) is fixedly connected to the support (503), and the upper platform (501) is fixedly connected to the pillar (502) to form an integral frame (50).

[0026] In some embodiments, the automatic primer tightening device is characterized in that the coaxiality of the cartridge positioning and clamping mechanism and the primer tightening mechanism is guaranteed to be within 0.15mm during assembly.

[0027] In some embodiments, the operation process of the automatic underfire tightening device is as follows: The cartridge case (01) is manually placed into the pneumatic clamp (104), and after being positioned by the positioning rod (103), the cartridge case (01) is pneumatically clamped. The detection positioning block (408) is then placed on the cartridge case (01). At this time, the distance sensor (401) can detect the distance to the detection disc assembly (204). After the tightening head (214) tooth profile is aligned with the primer tooth profile, the push rod (301) on the clamping cylinder (303) is rotated to press the detection disc assembly (204) to ensure that the tightening head (214) and the primer do not slip when tightened, so as to provide power to the explosion-proof servo reducer (2 01) The rotation signal causes the ball spline shaft assembly (211) to rotate via the synchronous pulley I (209), synchronous pulley II (207), and synchronous belt (208) to drive the tightening head (214) to screw into the primer. When the distance sensor (401) detects the set screwing depth, it sends a stop signal to the explosion-proof servo reducer (201). At the same time, the push rod (301) on the rotating clamping cylinder (303) releases the detection disc assembly (204), and the pneumatic clamp (104) releases the cartridge case (01). The cartridge case (01) is then manually removed, completing one automatic primer tightening action.

[0028] This invention achieves automated assembly technology through a PLC control system, a depth detection mechanism, and a servo motor, reducing the labor intensity of workers. A programmable logic controller (PLC) is used as the main controller to ensure product consistency. A servo motor controls the tightening torque for easy adjustment. During primer tightening, a rotary clamping mechanism reliably ensures that the tightening head is in constant contact with the primer. A fixed pneumatic chuck device is used to ensure that the cartridge case paint layer is not damaged while reliably clamping the cartridge case. This invention utilizes automated primer tightening production, which not only ensures the reliability, consistency, and safety of primer products but also improves production efficiency and reduces the labor intensity of workers.

[0029] It should be noted that the above process operations can be combined to varying degrees. For the sake of brevity, the implementation methods of various combinations will not be elaborated here. Those skilled in the art can flexibly adjust the order of the above operation steps or flexibly combine the above steps according to actual needs.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should be covered within the protection scope of this utility model.

Claims

1. An automatic primer tightening device, characterized in that, The device includes: an overall frame (50), and a cartridge case positioning and clamping mechanism (10), a primer tightening mechanism (20), a rotary pressing mechanism (30), and a primer screw-in depth detection mechanism (40) provided on the overall frame (50), wherein: the cartridge case positioning and clamping mechanism (10) is used to position and clamp the cartridge case (01); the primer tightening mechanism (20) is used to tighten the primer; the rotary pressing mechanism (30) is used to rotary press the primer; and the primer screw-in depth detection mechanism (40) is used to detect the primer screw-in depth.

2. The automatic primer tightening device according to claim 1, characterized in that, in: The cartridge case positioning and clamping mechanism (10) includes: a pull rod (101), a clamping plate seat (102), a positioning rod (103), and a pneumatic clamping plate (104); the primer tightening mechanism (20) includes: an explosion-proof servo reducer (201), a baffle (202), a linear guide rail assembly (203), a detection disc assembly (204), a seat (205), a motor seat (206), a synchronous pulley II (207), a synchronous belt (208), a synchronous pulley I (209), a bearing seat assembly (210), a ball spline shaft assembly (211), a coupling (212), a cover (213), and a tightening head (214). The rotary clamping mechanism (30) includes: a top rod (301), a cantilever (302), a rotary clamping cylinder (303), and a fixing plate (304); the bottom screw-in depth detection mechanism (40) includes: a distance sensor (401), a sensor bracket (402), a linear bearing (403), a nut (404), a compression spring (405), a detection rod I (406), a detection rod II (407), and a detection positioning block (408); the overall frame (50) includes: an upper platform (501), a support column (502), a support (503), a platform (504), and a frame (505).

3. The automatic primer tightening device according to claim 2, characterized in that, in: Platform (504) is fixedly connected to frame (505); pneumatic chuck (104) is fixedly connected to chuck seat (102), positioning rod (103) is threaded to chuck seat (102) and fixed by round nut, chuck seat (102) is fixedly connected to platform (504) by tie rod (101); support (503) is fixedly connected to platform (504), support column (502) is fixedly connected to support (503), upper platform (501) is fixedly connected to support column (502); explosion-proof servo reducer (201) is connected to motor base (205) by tie rod (205). 6) The synchronous pulley II (207) is fixedly connected to the upper platform (501), and the output shaft of the explosion-proof servo reducer (201) is fixedly connected to the output shaft; the seat (205) is fixedly connected to the upper platform (501), and the baffle (202) and linear guide rail assembly (203) are fixedly connected to the seat (205); the bearing seat assembly (210) is fixedly connected to the linear guide rail assembly (203), the bearing seat assembly (210) and the ball spline shaft assembly (211) are clearance-fitted, the ball spline shaft assembly (211) is fixedly connected to the upper platform (501), and the detection disc assembly (204) is fixedly connected to the upper platform (501). The ball spline shaft assembly (211) is clearance-fitted with the synchronous pulley I (209), which is fixedly connected to the ball spline shaft assembly (211). The tightening head (214) is fixedly connected to the ball spline shaft assembly (211) via the coupling (212) and the cover (213), and the coupling (212) is fixedly connected to the cover (213). The rotary clamping cylinder (303) is fixedly connected to the upper platform (501) via the fixing plate (304), and the cantilever (302) is fixedly connected to the rotary clamping cylinder (303). The push rod (301) is fixedly connected to the cantilever (302). Connect the linear bearing (403) to the upper platform (501), connect the detection rod I (406) to the nut (404) by thread, connect the compression spring (405) through the detection rod I (406) to the linear bearing (403) by clearance fit, connect the sensor bracket (402) to the detection rod I (406) by the nut, connect the distance sensor (401) to the sensor bracket (402), connect the detection rod II (407) to the detection rod I (406), and connect the detection positioning block (408) to the detection rod II (407).

4. The automatic primer tightening device according to claim 2, characterized in that, in: The cartridge case (01) is placed into the pneumatic clamp (104), and after being positioned by the positioning rod (103), the cartridge case (01) is pneumatically clamped; the detection positioning block (408) is placed on the cartridge case (01); the distance sensor (401) is used to detect the distance of the detection disc assembly (204); after the tooth profile of the tightening head (214) is aligned with the tooth profile of the primer, the push rod (301) on the clamping cylinder (303) is rotated to press the detection disc assembly (204) to ensure that the tightening head (214) and the primer do not slip when tightened, and to provide rotation signal to the explosion-proof servo reducer (201). The ball spline shaft assembly (211) is rotated by the synchronous pulley I (209), synchronous pulley II (207), and synchronous belt (208) to drive the tightening head (214) to screw into the primer. When the distance sensor (401) detects the set screwing depth, it sends a stop signal to the explosion-proof servo reducer (201). At the same time, the push rod (301) on the rotating clamping cylinder (303) releases the detection disc assembly (204), and the pneumatic clamp (104) releases the cartridge case (01). The cartridge case (01) is then manually removed, completing one automatic primer tightening action.

5. The automatic primer tightening device according to claim 2, characterized in that, in: The pneumatic chuck (104) is fixedly connected to the chuck seat (102), the positioning rod (103) is threadedly connected to the chuck seat (102) and fixed by a round nut, and the chuck seat (102) is fixedly connected to the platform (504) by a pull rod (101) to form a cartridge positioning and clamping mechanism (10).

6. The automatic primer tightening device according to claim 2, characterized in that, in: The explosion-proof servo reducer (201) is fixedly connected to the upper platform (501) via the motor mount (206). The synchronous pulley II (207) is fixedly connected to the output shaft of the explosion-proof servo reducer (201). Synchronous pulley I (209) and synchronous pulley II (207) are connected via a synchronous belt (208). The seat (205) is fixedly connected to the upper platform (501). The baffle (202) and linear guide rail assembly (203) are fixedly connected to the seat (205). The bearing seat assembly (210) is fixedly connected to the linear guide rail assembly (203). The bearing assembly (210) is clearance-fitted with the ball spline shaft assembly (211), the ball spline shaft assembly (211) is fixedly connected to the upper platform (501), the detection disc assembly (204) is clearance-fitted with the ball spline shaft assembly (211), the synchronous pulley I (209) is fixedly connected to the ball spline shaft assembly (211), the tightening head (214) is fixedly connected to the ball spline shaft assembly (211) through the coupling (212) and the cover (213), and the coupling (212) and the cover (213) are fixedly connected to form the bottom tightening mechanism (20).

7. The automatic primer tightening device according to claim 2, characterized in that, in: The rotary clamping cylinder (303) is fixedly connected to the upper platform (501) via the fixed plate (304), the cantilever (302) is fixedly connected to the rotary clamping cylinder (303), and the push rod (301) is fixedly connected to the cantilever (302) to form a rotary clamping mechanism (30).

8. The automatic primer tightening device according to claim 2, characterized in that, in: The linear bearing (403) is fixedly connected to the upper platform (501), the detection rod I (406) is threadedly connected to the nut (404), the compression spring (405) passes through the detection rod I (406) and is clearance-fitted with the linear bearing (403), the sensor bracket (402) is fixedly connected to the detection rod I (406) through the nut, the distance sensor (401) is fixedly connected to the sensor bracket (402), the detection rod II (407) is fixedly connected to the detection rod I (406), and the detection positioning block (408) is fixedly connected to the detection rod II (407) to form the bottom screw-in depth detection mechanism (40).

9. The automatic primer tightening device according to claim 2, characterized in that, in: The platform (504) is fixedly connected to the frame (505), the support (503) is fixedly connected to the platform (504), the support column (502) is fixedly connected inside the support (503), and the upper platform (501) is fixedly connected to the support column (502) to form an overall frame (50).

10. An automatic primer tightening device according to any one of claims 2-9, characterized in that, in: The coaxiality of the cartridge case positioning and clamping mechanism (10) and the primer tightening mechanism (20) during assembly is guaranteed to be within 0.15mm.

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