A pressure sensor marking apparatus

CN224750362UActive Publication Date: 2026-09-15HEYUAN XINYUAN TECH CO LTD
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Patent Information

Application Number
CN202522213177.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-20
Publication Date
2026-09-15
Estimated Expiration
2035-10-20

AI Technical Summary

Technical Problem

[0004]本实用新型的目的在于克服现有技术的不足,适应现实需要,提供一种压力传感器打标设备,以解决当前在利用激光打标机对压力传感器壳体表面进行规格信息标印加工时,当面对数量众多的压力传感器,当前的操作流程存在效率问题,具体而言,操作者需逐个将压力传感器放置于托盘内,随后再对每个已放置的压力传感器进行分步固定,这一过程对于数量较多且规格相同的压力传感器来说,显得尤为繁琐,由于无法实现多组压力传感器的同步固定,操作者必须重复进行多次固定操作,每一步都不可或缺且耗时,这种繁琐的固定步骤不仅增加了操作者的劳动强度,还显著延长了整体加工时间,进而影响了对压力传感器表面刻印的加工效率的技术问题

Benefits of technology

1.本实用新型通过在安装机台表面设置有转动盘,以及在转动盘内部横向活动设置有若干组传动杆,并且在转动盘中部竖向活动设置有推动杆,结合固定杆而将套接于转动丝杆外侧的升降套筒,与推动杆传动连接后,使得在将所需打标刻印加工的压力传感器放置于转动盘内部后,操作者只需对单一设置的转动架持续拧动,可以带动转动丝杆随之同步在支撑框内壁发生转动后,结合转动丝杆对升降套筒的转动驱动作用下而使其同步在支撑框内部竖向下移,进而提供给推动杆相应的竖向推动力后,结合推动杆底端和传动杆侧端的相互作用下,可以同步提供给多组传动杆相应水平推动力,使得传动杆可以带动推动板随之同步在安装槽内部进行水平移动后,在连接杆的连接传动作用下,使得多组抵动柱可以同步相对的从导向滑槽内部移动至插接槽中,进而可以对插接槽内部放置的压力传感器进行抵动限位处理,在保证压力传感器打标刻印加工过程中稳定性的同时,减少操作者依次对多组压力传感器进行固定所需的调节步骤,提高对压力传感器的打标刻印加工效率。

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Abstract

The utility model relates to a kind of pressure sensor marking equipment, rotating disc is rotatably installed in installation machine top side edge, support frame is vertically fixedly installed in rotating disc top middle end, hollow frame is fixedly installed in support frame top, support rod is vertically fixedly installed in hollow frame bottom both sides, and support rod bottom is fixedly installed in rotating disc top end surface, the utility model makes after the pressure sensor needed to be marked and engraved is placed in rotating disc interior, operator only needs to continuously screw to single setting rotating stand, so that multiple groups of resistance column can be synchronously relatively moved from the inside of guide sliding slot to plug-in slot, and then resistance limiting treatment can be carried out to the pressure sensor placed in plug-in slot, while ensuring the stability of pressure sensor marking and engraving processing, reduce the adjustment steps required for operator to fix multiple pressure sensors in turn, improve the marking and engraving processing efficiency of pressure sensor.
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Description

Technical Field

[0001] This utility model relates to the field of laser marking technology, specifically a pressure sensor marking device. Background Technology

[0002] A pressure sensor is a precision sensing device that converts pressure signals into measurable electrical signals. It is widely used in industrial control, automotive electronics, medical equipment, and consumer electronics. Its core principle is based on physical mechanisms such as the piezoresistive effect, piezoelectric effect, or capacitance change. A sensitive element senses pressure changes and deforms, which in turn causes changes in electrical parameters such as resistance, voltage, or capacitance. Finally, a signal processing circuit outputs a standardized signal proportional to the pressure. To avoid confusion between pressure sensors of different specifications, batch numbers, and production dates, a laser marking machine is often used to permanently engrave the corresponding specification information on the surface of the pressure sensor after production.

[0003] When using a laser marking machine to mark dimensional information on the surface of pressure sensor housings, the current process suffers from efficiency issues when dealing with a large number of pressure sensors. Specifically, the operator must place each pressure sensor individually into a tray and then fix each sensor in stages. This process is particularly cumbersome for a large number of pressure sensors of the same specifications. Since it is impossible to simultaneously fix multiple groups of pressure sensors, the operator must repeat the fixing operation multiple times. Each step is indispensable and time-consuming. This tedious fixing process not only increases the operator's workload but also significantly extends the overall processing time, thus affecting the efficiency of marking the pressure sensor surface. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a pressure sensor marking device to solve the efficiency problem in the current operation process when using a laser marking machine to mark specification information on the surface of a pressure sensor housing, especially when dealing with a large number of pressure sensors. Specifically, the operator needs to place the pressure sensors one by one in the tray, and then fix each placed pressure sensor step by step. This process is particularly cumbersome for a large number of pressure sensors with the same specifications. Since it is impossible to fix multiple groups of pressure sensors simultaneously, the operator must repeat the fixing operation multiple times. Each step is indispensable and time-consuming. This cumbersome fixing process not only increases the operator's labor intensity but also significantly prolongs the overall processing time, thus affecting the processing efficiency of marking on the surface of the pressure sensor.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a pressure sensor marking device is designed, including an installation platform, a drive frame is provided on the top side of the installation platform, a laser emitter is provided at the top of the drive frame, a rotating disk is rotatably installed on the top side of the installation platform, a support frame is vertically fixedly installed at the middle of the top of the rotating disk, a hollow frame is fixedly installed on the top of the support frame, and support rods are vertically fixedly installed on both sides of the bottom of the hollow frame, with the bottom of the support rods fixedly installed on the top surface of the rotating disk; The rotating disk has several sets of vertically spaced insertion slots on its side. A stop post is slidably installed inside the side of the rotating disk, and the side end of the stop post passes through the inner wall of the insertion slot and protrudes into the insertion slot. A synchronous pushing mechanism is provided inside the rotating disk, and the synchronous pushing mechanism and the stop post are connected in a transmission manner. The support frame is equipped with a lifting transmission mechanism, which is connected to the synchronous pushing mechanism. The hollow frame is equipped with a one-way rotation mechanism, which is connected to the lifting transmission mechanism.

[0006] Preferably, the synchronous pushing mechanism includes a transmission rod and a pushing rod. The rotating disk has guide grooves equidistantly and laterally opened on the side near the insertion slot, and the abutment column is slidably installed inside the guide groove. The rotating disk has several sets of mounting grooves equidistantly and laterally opened on the side near the guide groove. The rotating disk has a movable groove vertically opened in the middle, and the two ends of the mounting groove are respectively connected to the movable groove and the guide groove.

[0007] Preferably, a push plate is slidably installed on the side of the mounting groove away from the insertion groove, and a transmission rod is fixedly installed on the side of the push plate away from the insertion groove, with the side end of the transmission rod movably installed inside the movable groove. A push rod is vertically slidably installed through the middle of the bottom of the support frame, and the push rod is slidably inserted into the movable groove.

[0008] Preferably, a connecting rod is fixedly installed on the side of the push plate near the insertion slot. A return spring is movably sleeved on the outer side of each connecting rod, and the two ends of the return spring are respectively movably attached to the push plate and the inner wall of the mounting slot. The top end of the side of the connecting rod and the side end of the abutment column are fixedly connected.

[0009] Preferably, the lifting transmission mechanism includes a rotating lead screw, which is rotatably mounted on the top inner side of the support frame via a bearing. A rotating frame is vertically fixedly mounted on the top of the rotating lead screw, and the top of the rotating frame is rotatably mounted inside the hollow frame via a bearing. A lifting sleeve is threadedly connected to the outer side of the rotating lead screw. Fixed rods are vertically fixedly mounted on both sides of the bottom of the lifting sleeve, and the bottom of the fixed rods is fixedly connected to the top of the push rod.

[0010] Preferably, limit sliders are fixedly installed at both ends of the outer side of the lifting sleeve, and limit grooves are vertically opened on both sides of the inside of the support frame, with the side ends of the limit sliders slidably inserted into the limit grooves.

[0011] Preferably, the unidirectional rotation mechanism includes a transmission ratchet block and a limiting pawl. A rotating disk is fixedly sleeved on the outer side of the rotating frame, and the rotating disk is rotatably disposed on the inner wall of the support frame. Several sets of transmission ratchet blocks are fixedly installed at equal intervals on the outer wall of the rotating disk. A movable rod is vertically rotatably installed inside the side of the hollow frame through a bearing. A limiting pawl is fixedly sleeved on the outer wall of the movable rod, and the side end of the limiting pawl is movably attached to the outer wall of the transmission ratchet.

[0012] Preferably, a hollow tube is vertically fixedly installed on the top outer wall of the support frame, and a movable rod is rotatably installed inside the hollow tube. A reset torsion spring is movably sleeved on the outside of the movable rod, and the reset torsion spring is rotatably installed inside the hollow tube. A push plate is fixedly installed on the top surface of the movable rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model features a rotating disk on the surface of a mounting platform, several sets of transmission rods arranged laterally within the rotating disk, and a push rod arranged vertically in the center of the rotating disk. A lifting sleeve, fitted onto the outside of the rotating lead screw and connected to the push rod via a fixed rod, allows the operator to place the pressure sensor to be marked or engraved inside the rotating disk. By continuously turning the single rotating frame, the operator can cause the rotating lead screw to rotate synchronously within the support frame. This rotation, combined with the rotational drive of the lead screw on the lifting sleeve, causes the sleeve to move vertically downwards within the support frame, thus providing a corresponding vertical force to the push rod. After the pushing force is applied, the interaction between the bottom end of the pushing rod and the side end of the transmission rod can simultaneously provide corresponding horizontal pushing force to multiple sets of transmission rods. This allows the transmission rods to drive the pushing plate to move horizontally within the mounting slot. Under the connecting transmission action of the connecting rod, multiple sets of abutting columns can move synchronously from inside the guide slide groove to the insertion slot. This allows for abutting and limiting of the pressure sensor placed inside the insertion slot. While ensuring the stability of the pressure sensor during marking and engraving, this reduces the adjustment steps required for the operator to fix multiple sets of pressure sensors sequentially, thus improving the efficiency of marking and engraving the pressure sensor.

[0014] 2. This utility model features a hollow frame at the top of the support frame, within which a rotatable rotating disk is installed. A rotating frame connects the rotating disk to a rotating screw. When the abutment position of the abutment column needs adjustment, the rotating frame is turned. This action causes the rotating disk and its outer transmission ratchet block to rotate synchronously within the hollow frame. During rotation, the limiting pawl and the transmission ratchet block cooperate and work together. Utilizing their unique structural design, the rotating disk and the connected rotating frame can only rotate in one direction. This unidirectional rotation mechanism achieves a self-locking function for the horizontal position of the abutment column. Thus, after the abutment column position adjustment is completed, it will not arbitrarily return to its original position due to external factors, thereby ensuring that the abutment column can stably provide the required abutment limiting force to the pressure sensor, guaranteeing the stability and reliability of the entire device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the rotating disk of this utility model; Figure 3 This is a schematic diagram of the internal assembly of the hollow frame of this utility model; Figure 4 This is a schematic diagram of the internal structure of the support frame of this utility model; Figure 5 This is a side view cross-sectional structural diagram of the hollow tube of this utility model; In the diagram: 1. Mounting platform; 11. Drive frame; 12. Laser emitter; 13. Rotating disk; 14. Support frame; 15. Support rod; 16. Hollow frame; 2. Insertion slot; 21. Mounting slot; 22. Movable slot; 23. Push plate; 24. Transmission rod; 25. Guide slide; 26. Abutment column; 27. Connecting rod; 28. Return spring; 29. ​​Push rod; 3. Rotating screw; 31. Lifting sleeve; 32. Fixed rod; 33. Limiting slider; 34. Limiting slide; 4. Rotating frame; 41. Rotating disk; 42. Transmission ratchet; 43. Movable rod; 44. Limiting pawl; 5. Hollow tube; 51. Return torsion spring; 52. Hand push plate. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1: A pressure sensor marking device, see [link / reference] Figures 1 to 5A rotating disk 13 is rotatably mounted on the top side of the mounting platform 1. Several sets of insertion slots 2 are vertically and equidistantly opened on the side of the rotating disk 13. A support frame 14 is vertically fixedly mounted at the top center of the rotating disk 13. A hollow frame 16 is fixedly mounted on the top of the support frame 14. Support rods 15 are vertically fixedly mounted on both sides of the bottom of the hollow frame 16, and the bottom of the support rods 15 is fixedly mounted on the top surface of the rotating disk 13. An abutment post 26 is horizontally slidably mounted inside the side of the rotating disk 13, and the side end of the abutment post 26 penetrates the inner wall of the insertion slot 2 and protrudes into the insertion slot 2.

[0017] When marking and engraving are required on the surface of the pressure sensor, multiple pressure sensors to be processed are placed vertically in the insertion slot 2 in sequence. Then, the rotating frame 4 is continuously rotated, which drives the rotating screw 3 connected to its bottom to rotate synchronously inside the support frame 14. Combined with the guiding and limiting effect of the limiting slide 34 on the limiting slider 33, the lifting sleeve 31 sleeved on the outside of the rotating screw 3 can be driven to move down synchronously inside the support frame 14. Then, under the connecting transmission action of the fixed rod 32, a corresponding vertical pushing force is provided to the push rod 29, so that the push rod 29 can move vertically from the bottom of the support frame 14 to the movable slot 22 inside the rotating disk 13, so as to provide a corresponding horizontal pushing force to the abutting column 26. This allows the abutting column 26 to abut the pressure sensor inside the insertion slot 2, perform abutment limiting treatment, and facilitate subsequent marking and engraving processing.

[0018] For details, see Figures 1 to 5 The lifting transmission mechanism includes a rotating screw 3. The rotating screw 3 is rotatably mounted on the top of the inner side of the support frame 14 via a bearing. A rotating frame 4 is vertically fixedly mounted on the top of the rotating screw 3, and the top of the rotating frame 4 is rotatably mounted inside the hollow frame 16 via a bearing. A lifting sleeve 31 is threadedly connected to the outer side of the rotating screw 3. Fixed rods 32 are vertically fixedly mounted on both sides of the bottom of the lifting sleeve 31, and the bottom of the fixed rods 32 is fixedly connected to the top of the push rod 29. Limiting sliders 33 are fixedly mounted on both ends of the outer side of the lifting sleeve 31. Limiting grooves 34 are vertically opened on both sides of the inner side of the support frame 14, and the side ends of the limiting sliders 33 are slidably inserted into the limiting grooves 34.

[0019] For details, see Figures 1 to 5A push plate 23 is slidably installed on the side of the mounting slot 21 away from the insertion slot 2. A transmission rod 24 is fixedly installed on the side of the push plate 23 away from the insertion slot 2, and the side end of the transmission rod 24 is movably installed inside the movable slot 22. A push rod 29 is vertically slidably installed through the middle of the bottom of the support frame 14, and the push rod 29 is slidably inserted into the movable slot 22. The side ends of the push rod 29 and the transmission rod 24 are both semi-circular. A connecting rod 27 is fixedly installed on the side of the push plate 23 near the insertion slot 2. A return spring 28 is movably sleeved on the outside of each connecting rod 27, and the two ends of the return spring 28 are respectively movably attached to the push plate 23 and the inner wall of the mounting slot 21. The top end of the side of the connecting rod 27 is fixedly connected to the side end of the abutment column 26.

[0020] When the push rod 29 is driven to move vertically into the mounting groove 21, and the bottom end of the push rod 29 contacts the side end of the transmission rod 24, the push rod 29 continues to move downward, providing the transmission rod 24 with a corresponding horizontal pushing force. This allows multiple sets of transmission rods 24 to move horizontally towards the mounting groove 21 in sync, and the transmission rods 24 can drive the push plate 23 to move horizontally within the mounting groove 21 in sync. Under the connecting transmission action of the connecting rod 27, multiple sets of abutting columns 26 can move synchronously from the guide slide 25 into the insertion groove 2, thereby abutting and limiting the pressure sensor placed inside the insertion groove 2.

[0021] For details, see Figures 1 to 5 The installation platform 1 has a drive frame 11 on its top side, and a laser emitter 12 is installed at the top of the drive frame 11. The drive frame 11 is equipped with a corresponding electric slide rail, which can adjust the position of the laser emitter 12 in multiple directions. A rotating disk 13 is rotatably installed on the top side of the installation platform 1. A drive motor connected to the rotating disk 13 is installed at the bottom of the installation platform 1, which can provide the rotating disk 13 with the corresponding driving force to make it rotate on the surface of the installation platform 1.

[0022] After the pressure sensor is stopped and limited, the drive frame 11 is opened via an external controller, causing the laser emitter 12 to move and adjust on the surface of the mounting base 1. Simultaneously, the laser emitter 12 is activated to laser-etch the outer wall of the pressure sensor housing inserted into the rotating disk 13. Then, the drive motor, which is connected to the bottom of the mounting base 1 and the rotating disk 13, is activated, causing the rotating disk 13 to rotate. This synchronously rotates the pressure sensors placed on the surface of the mounting base 1, adjusting the position of the pressure sensors to be processed, in order to perform laser etching on the outer walls of multiple pressure sensor housings. Further, see Figures 1 to 5The one-way rotation mechanism includes a transmission ratchet block 42 and a limiting pawl 44. A rotating disc 41 is fixedly sleeved on the outside of the rotating frame 4, and the rotating disc 41 is rotatably mounted on the inner wall of the hollow tube 16. Several sets of transmission ratchet blocks 42 are fixedly installed at equal intervals on the outer wall of the rotating disc 41. A movable rod 43 is vertically rotatably mounted inside the side of the hollow frame 16 through a bearing. The limiting pawl 44 is fixedly sleeved on the outer wall of the movable rod 43, and the side end of the limiting pawl 44 is movably attached to the outer wall of the transmission ratchet.

[0023] A hollow tube 5 is vertically fixedly installed on the top outer wall of the support frame 14, and a movable rod 43 is rotatably installed inside the hollow tube 5. A reset torsion spring 51 is movably sleeved on the outside of the movable rod 43, and the reset torsion spring 51 is rotatably set inside the hollow tube 5. A push plate 52 is fixedly installed on the top surface of the movable rod 43, and the push plate 52 is rotatably set outside the support frame 14.

[0024] After marking and engraving multiple pressure sensors sequentially, the hand-operated push plate 52 is twisted, causing it to rotate synchronously via the movable rod 43. This drives the limiting pawl 44 to rotate counterclockwise inside the hollow frame 16, allowing it to move away from the outer wall of the transmission ratchet block 42. Once the limiting pawl 44 loses its resistance to the transmission ratchet block 42, the rotating frame 4 is then twisted in the opposite direction, causing the rotating screw 3 to rotate. Combined with the rotational transmission action of the rotating screw 3 on the lifting sleeve 31, this allows... After the lifting sleeve 31 is lifted and moved vertically in sync, the push rod 29 can be lifted out of the movable slot 22. This causes the side end of the push rod 29 to lose its resistance to the transmission rod 24. Combined with the reverse pushing action of the return spring 28, the abutment column 26 can be moved away from the outer wall of the pressure sensor in sync. This causes the abutment column 26 to lose the resistance limiting force of the pressure sensor. Then, the operator can pull the pressure sensor after marking and engraving to remove it from the insertion slot 2 and repeat the subsequent marking and engraving process.

[0025] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0026] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A pressure sensor marking device, comprising a mounting base (1), wherein a drive frame (11) is provided on the top side of the mounting base (1), and a laser emitter (12) is provided on the top side of the drive frame (11), characterized in that, The mounting platform (1) has a rotating disk (13) rotatably mounted on the top side. A support frame (14) is vertically fixed at the top center of the rotating disk (13). A hollow frame (16) is fixedly mounted on the top of the support frame (14). Support rods (15) are vertically fixed on both sides of the bottom of the hollow frame (16), and the bottom of the support rods (15) is fixedly mounted on the top surface of the rotating disk (13). The rotating disk (13) has several sets of insertion slots (2) vertically arranged at equal intervals on its side. Abutting column (26) is horizontally slidably installed inside the side of the rotating disk (13), and the side end of the abutting column (26) passes through the inner wall of the insertion slot (2) and protrudes into the insertion slot (2). A synchronous pushing mechanism is provided inside the rotating disk (13), and the synchronous pushing mechanism and the abutting column (26) are connected in a transmission. The support frame (14) is provided with a lifting transmission mechanism, and the lifting transmission mechanism and the synchronous push mechanism are connected in transmission. The hollow frame (16) is provided with a one-way rotation mechanism, and the one-way rotation mechanism is connected to the lifting transmission mechanism.

2. The pressure sensor marking equipment as described in claim 1, characterized in that, The synchronous pushing mechanism includes a transmission rod (24) and a push rod (29). The rotating disk (13) has guide grooves (25) equidistantly opened on one side near the insertion groove (2), and the abutment column (26) is slidably installed inside the guide groove (25). The rotating disk (13) has several sets of mounting grooves (21) equidistantly opened on one side near the guide groove (25). The rotating disk (13) has a movable groove (22) vertically opened in the middle. The two ends of the mounting groove (21) are connected to the movable groove (22) and the guide groove (25) respectively.

3. The pressure sensor marking equipment as described in claim 2, characterized in that, A push plate (23) is slidably installed on the side of the mounting groove (21) away from the insertion groove (2). A transmission rod (24) is fixedly installed on the side of the push plate (23) away from the insertion groove (2), and the side end of the transmission rod (24) is movably installed inside the movable groove (22). A push rod (29) is vertically slidably installed through the middle of the bottom of the support frame (14), and the push rod (29) is slidably inserted into the movable groove (22).

4. The pressure sensor marking device as described in claim 3, characterized in that, A connecting rod (27) is fixedly installed on the side of the push plate (23) near the insertion slot (2). A return spring (28) is movably sleeved on the outside of each connecting rod (27). The two ends of the side of the return spring (28) are respectively movably attached to the inner wall of the push plate (23) and the mounting slot (21). The top end of the side of the connecting rod (27) is fixedly connected to the side end of the abutment column (26).

5. The pressure sensor marking equipment as described in claim 1, characterized in that, The lifting transmission mechanism includes a rotating screw (3). The rotating screw (3) is rotatably mounted on the top of the inner side of the support frame (14) via a bearing. A rotating frame (4) is vertically fixed at the top of the rotating screw (3), and the top of the rotating frame (4) is rotatably mounted inside the hollow frame (16) via a bearing. A lifting sleeve (31) is threadedly connected to the outer side of the rotating screw (3). Fixed rods (32) are vertically fixed on both sides of the bottom of the lifting sleeve (31), and the bottom of the fixed rods (32) is fixedly connected to the top of the push rod (29).

6. The pressure sensor marking equipment as described in claim 5, characterized in that, Limiting sliders (33) are fixedly installed at both ends of the outer side of the lifting sleeve (31), and limiting grooves (34) are vertically opened on both sides inside the support frame (14), and the side end of the limiting slider (33) is slidably inserted into the limiting groove (34).

7. The pressure sensor marking equipment as described in claim 5, characterized in that, The unidirectional rotation mechanism includes a transmission ratchet block (42) and a limiting pawl (44). A rotating disc (41) is fixedly sleeved on the outside of the rotating frame (4), and the rotating disc (41) is rotatably mounted on the inner wall of the hollow frame (16). Several sets of transmission ratchet blocks (42) are fixedly installed at equal intervals on the outer wall of the rotating disc (41). A movable rod (43) is vertically rotatably mounted inside the side of the hollow frame (16) through a bearing. The limiting pawl (44) is fixedly sleeved on the outer wall of the movable rod (43), and the side end of the limiting pawl (44) is movably attached to the outer wall of the transmission ratchet block (42).

8. The pressure sensor marking device as described in claim 7, characterized in that, A hollow tube (5) is vertically fixed on the top outer wall of the support frame (14), and a movable rod (43) is rotatably installed inside the hollow tube (5). A reset torsion spring (51) is movably sleeved on the outside of the movable rod (43), and the reset torsion spring (51) is rotatably set inside the hollow tube (5). A push plate (52) is fixedly installed on the top surface of the movable rod (43).