A door panel processing and cutting device for fast distance measurement

Abstract

The utility model provides a door board processing cutting device of quick ranging, relate to door board processing equipment technical field, include: cutting device main part, the upper position of cutting device main part is equipped with a group of horizontal drive mechanism, one side of horizontal drive mechanism is equipped with a horizontal steady block, and one locking plate is installed to one side of steady block cooperation bolt, the upper position of locking plate is equipped with a vertical positioning rod, and the inboard position of cutting device main part installs a steady plate. Distance sensor is accurate with positioning plate, clamping plate, in the process of door board positioning clamping, and distance sensor real -time monitoring door board and the distance of positioning part, realizes the effect that door board is automatic and quick ranging, and the effect that the effect that door board is automatic and quick ranging is realized, and the reliable basis is provided for cutting path planning.

Description

Technical Field

[0001] This utility model relates to the technical field of door panel processing equipment, and in particular to a door panel processing and cutting device with rapid distance measurement. Background Technology

[0002] In the door panel processing industry, with the increasing demand for customization and the improvement of production efficiency requirements, achieving precise cutting and rapid processing of door panels has become a core technological challenge. Existing door panel cutting equipment has significant shortcomings in the clamping, positioning, and measurement stages:

[0003] In the measurement process, traditional equipment relies on manual measurement using tools such as tape measures and calipers, or on positioning using mechanical rulers combined with dials. This not only increases labor costs but also introduces significant measurement errors and fails to dynamically monitor the position of the door panel. While some equipment that introduces laser ranging can achieve non-contact measurement, the sensor's fixed installation position makes it difficult to coordinate with the clamping mechanism, preventing synchronous measurement during clamping and resulting in low overall processing efficiency. Furthermore, existing measurement systems lack effective sensor fixation, and vibrations during equipment operation can easily cause sensor displacement, further reducing measurement accuracy. Utility Model Content

[0004] This utility model relates to a door panel processing and cutting device with rapid distance measurement. It achieves multi-dimensional precise positioning and clamping of the door panel through a positioning component, and a distance sensor detects the position information of the door panel in real time. With the precise movement of the cutting head, it realizes rapid distance measurement and efficient cutting of the door panel. The anti-loosening structure ensures that the cutting head is installed firmly. The coordinated work of all components significantly improves the accuracy and efficiency of door panel processing.

[0005] This utility model provides a door panel processing and cutting device for rapid distance measurement, specifically including: a cutting device body, a set of horizontal driving mechanisms at the top of the cutting device body, a horizontal stabilizing block on one side of the horizontal driving mechanism, a locking plate installed on one side of the stabilizing block with bolts, a vertical positioning rod above the locking plate, a stabilizing plate installed on the inner side of the cutting device body, a first electric motor installed on one side of the cutting device body, a rotating connecting seat at the bottom of the stabilizing plate, a first positioning plate, a clamping plate, and a second positioning plate installed above the stabilizing plate, one first positioning plate and one second positioning plate, two clamping plates, and a distance sensor and a limiting plate arranged in a crisscross pattern installed above the clamping plate and the second positioning plate, respectively.

[0006] Furthermore, a set of crisscrossing sliding holes are provided on the basis of the stabilizing plate. A sliding block is provided at the bottom of the first positioning plate, the clamping plate and the second positioning plate respectively. The sliding block passes through the interior of the sliding hole. A support block is provided on both sides of the sliding block. A set of positioning grooves is provided on the inner side of the sliding hole. The support block extends into the interior of the positioning groove.

[0007] Furthermore, a set of crisscrossing rotating holes are formed on the rotating connecting seat. One-way threaded rods and two-way threaded rods are respectively inserted into the rotating holes. One side of the one-way threaded rod is connected to the drive shaft of the first electric motor. A mounting groove is formed on one side of the stabilizing plate based on the sliding hole. A second electric motor is installed inside the mounting groove. The drive shaft of the second electric motor is connected to one side of the two-way threaded rod. A keyway is provided on one side of the drive shaft.

[0008] Furthermore, the sliding block of the first positioning plate has a threaded hole corresponding to the one-way threaded rod. The one-way threaded rod passes through the inside of the threaded hole and is threadedly connected to the threaded hole. The sliding blocks of the two clamping plates each have a threaded hole corresponding to the two-way threaded rod. The helical directions of the two threaded holes are opposite, and the two-way threaded rod is threadedly connected to the threaded hole.

[0009] Furthermore, one of the sliding holes of the stabilizing plate is a T-shaped structure, and a second positioning plate is installed at the position of the T-shaped sliding hole. A set of vertical guide blocks are provided at the bottom of the second positioning plate. The guide blocks are I-shaped structures. A set of guide grooves are opened on the inner side of the sliding hole. One side of the guide block extends into the interior of the guide groove. One distance sensor is aligned with the first positioning plate, and the other distance sensor is aligned with the clamping plate.

[0010] Furthermore, a stabilizing groove is formed on one side of the guide block. The stabilizing groove has a U-shaped structure. A vertical rack is installed on the inner side of the stabilizing groove. A third electric motor is installed on the outer side of the main body of the cutting device. A gear is installed on one side of the drive shaft of the third electric motor. The gear and the rack mesh. The first electric motor, the one-way threaded rod, the first positioning plate, the second electric motor, the two-way threaded rod, the clamping plate, the second positioning plate, the guide block, the third electric motor, and the rack cooperate with each other to form a positioning assembly.

[0011] Furthermore, a clamping groove is formed on the inner side of the stabilizing block and the locking plate. The clamping groove has a V-shaped structure. An anti-loosening plate is installed on the outer side of the locking plate. The two sides of the anti-loosening plate correspond to the bolt mounting holes of the locking plate. A sliding hole corresponding to the positioning rod is formed on the upper part of the anti-loosening plate. The positioning rod passes through the interior of the sliding hole. A support spring is installed on the outer side of the positioning rod. A retaining ring is installed on the upper part of the positioning rod. The support spring is located between the retaining ring and the anti-loosening plate. The positioning rod and the anti-loosening plate cooperate with each other to form an anti-loosening structure.

[0012] Furthermore, a vertical sliding hole is provided above the clamping plate and the second positioning plate. The sliding hole has a rectangular structure and is located on one side of the distance sensor. A vertical limiting plate with a T-shaped structure is inserted inside the sliding hole. A nut is provided on one side of the distance sensor, and one side of the limiting plate and the side of the nut are in slight contact.

[0013] This utility model provides a door panel processing and cutting device for rapid distance measurement, which has the following beneficial effects:

[0014] The sliding holes of the stabilizing plate, together with the sliding block, support block and positioning groove, provide stable guidance and limit for the first positioning plate, clamping plate and second positioning plate to avoid shaking during movement; combined with the transmission structure of unidirectional threaded rod, bidirectional threaded rod and rack, it realizes multi-dimensional precise positioning of the door panel in the longitudinal and lateral directions, and adapts to the processing needs of door panels of different sizes.

[0015] The bidirectional threaded rod and the clamping plate are engaged by reverse threads, which can move in opposite directions simultaneously to quickly clamp or release door panels of different widths without the need for frequent manual adjustments, thus significantly improving the door panel clamping efficiency; the unidirectional movement of the first positioning plate assists in completing the longitudinal positioning, ensuring that the door panel is fixed and stable.

[0016] The anti-loosening structure uses the elastic pressure of the support spring to keep the anti-loosening plate tightly against the bolt, preventing the cutting head from loosening in a vibrating environment, ensuring the stability of the cutting head position during the cutting process, and avoiding cutting errors caused by displacement.

[0017] The distance sensor is precisely aligned with the positioning plate and clamping plate. During the positioning and clamping process of the door panel, the distance sensor monitors the distance between the door panel and the positioning component in real time, realizing the effect of automatic and fast distance measurement of the door panel. The limit plate effectively restricts the rotation of the sensor, prevents displacement due to vibration, ensures accurate distance measurement data, and provides a reliable basis for cutting path planning. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0020] In the attached diagram:

[0021] Figure 1 This diagram shows the axonal structure of the door panel processing and cutting device of this utility model after assembly;

[0022] Figure 2 This diagram shows an axial side view of the door panel processing and cutting device of this utility model.

[0023] Figure 3 A schematic diagram of the isometric structure of the positioning component of this utility model is shown;

[0024] Figure 4 This invention provides a schematic diagram of the positioning component from an elevation view on the axial side.

[0025] Figure 5 A schematic diagram of the axial structure of the locking plate and anti-loosening plate of this utility model is shown in cross-section.

[0026] Figure 6 A schematic diagram of the axial side structure of the stabilizing plate cross-section of this utility model is shown.

[0027] Figure 7 A partial axial side view of the positioning component of this utility model is shown;

[0028] Figure 8 A schematic diagram of the axial structure of the stabilizing plate and positioning assembly of this utility model is shown.

[0029] Figure 9 This utility model illustrates Figure 8 A magnified structural diagram at point A.

[0030] List of reference numerals

[0031] 1. Main body of the cutting device; 101. Stabilizing block; 102. Locking plate;

[0032] 2. Stabilizing plate; 201. Rotary connecting seat;

[0033] 3. Positioning components; 301. First electric motor; 302. One-way threaded rod; 303. First positioning plate; 304. Second electric motor; 305. Two-way threaded rod; 306. Clamping plate; 307. Second positioning plate; 308. Guide block; 309. Third electric motor; 310. Rack;

[0034] 4. Distance sensor;

[0035] 5. Limit plate;

[0036] 6. Anti-loosening structure; 601. Positioning rod; 602. Anti-loosening plate. Detailed Implementation

[0037] 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, not all, of the embodiments of this utility model. Based on the described 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.

[0038] Example 1: Please refer to Figures 1 to 9 :

[0039] This utility model proposes a rapid distance-measuring door panel processing and cutting device, comprising: a cutting device body 1, a set of horizontal drive mechanisms at the top of the cutting device body 1, a horizontal stabilizing block 101 on one side of the horizontal drive mechanisms, a locking plate 102 bolted to one side of the stabilizing block 101, a vertical positioning rod 601 above the locking plate 102, the locking plate 102 and the positioning rod 601 being integrated into a single structure, a stabilizing plate 2 installed on the inner side of the cutting device body 1, a first electric motor 301 installed on one side of the cutting device body 1, a rotating connecting seat 201 at the bottom of the stabilizing plate 2, and a first positioning plate 303, a clamping plate 306, and a second positioning plate 307 installed above the stabilizing plate 2, the first positioning plate 303 and the second positioning plate 307 being respectively configured as a... There are two clamping plates 306. A distance sensor 4 and a limiting plate 5, arranged in a crisscross pattern, are respectively installed above the clamping plate 306 and the second positioning plate 307. A vertical sliding hole, rectangular in structure, is opened above the clamping plate 306 and the second positioning plate 307. The sliding hole is located on one side of the distance sensor 4. A vertical limiting plate 5, T-shaped in structure, is inserted inside the sliding hole. A nut is located on one side of the distance sensor 4. One side of the limiting plate 5 and the side of the nut are in slight contact. Specifically, the rectangular sliding hole provides vertical sliding guidance for the limiting plate 5, and the T-shaped structure prevents the limiting plate 5 from slipping. The contact between the limiting plate 5 and the nut of the distance sensor 4 restricts the rotation of the distance sensor 4, preventing the distance sensor 4 from shifting due to vibration during device operation and ensuring the accuracy of distance measurement.

[0040] In this embodiment, a set of crisscrossing sliding holes are formed on the base of the stabilizing plate 2. A sliding block is provided at the bottom of each of the first positioning plate 303, the clamping plate 306, and the second positioning plate 307. The sliding block passes through the interior of the sliding hole, and a support block is provided on each side of the sliding block. A set of positioning grooves is formed on the inner side of the sliding hole, and the support blocks extend into the interior of the positioning grooves. Specifically, the sliding blocks, in cooperation with the sliding holes, provide precise sliding guidance for the first positioning plate 303, the clamping plate 306, and the second positioning plate 307, ensuring their smooth movement along a preset trajectory. The support blocks, in cooperation with the positioning grooves, restrict the vertical displacement of the sliding blocks, preventing the first positioning plate 303, the clamping plate 306, and the second positioning plate 307 from shaking or shifting during movement, thus improving the overall stability of the structure. To ensure qualitative and positioning accuracy, a set of crisscrossing rotating holes are formed on the rotating connecting seat 201. A one-way threaded rod 302 and a two-way threaded rod 305 are respectively inserted into the rotating holes. One side of the one-way threaded rod 302 is connected to the drive shaft of the first electric motor 301. A mounting groove is formed on one side of the stabilizing plate 2 based on the sliding hole. A second electric motor 304 is installed inside the mounting groove. The drive shaft of the second electric motor 304 is connected to one side of the two-way threaded rod 305. A keyway is provided on one side of the drive shaft. Specifically, the rotating holes provide stable rotational support for the threaded rods, ensuring smooth rotation; the keyway connection ensures that the first electric motor 301 and the second electric motor 304 stably drive the one-way threaded rod 302 and the two-way threaded rod 305 to rotate.

[0041] In this embodiment, the sliding block of the first positioning plate 303 has a threaded hole corresponding to the one-way threaded rod 302. The one-way threaded rod 302 passes through the interior of the threaded hole and is threadedly connected to the threaded hole. The sliding blocks of the two clamping plates 306 each have a threaded hole corresponding to the two-way threaded rod 305. The helical directions of the two threaded holes are opposite. The two-way threaded rod 305 is threadedly connected to the threaded hole. The thread pitch is processed according to actual needs. Specifically, the one-way threaded rod 302 engages with the thread of the first positioning plate 303 to realize the one-way linear movement of the first positioning plate 303, which facilitates the longitudinal positioning of the door panel. The two-way threaded rod 305 engages with the reverse threads of the two clamping plates 306 to enable the two clamping plates 306 to move synchronously in opposite directions, quickly clamping or releasing door panels of different widths, improving the door panel positioning efficiency and adaptability, and stabilizing one of the sliding blocks of the plate 2. The hole has a T-shaped structure. A second positioning plate 307 is installed at the position of the T-shaped sliding hole. A set of vertical guide blocks 308 are provided at the bottom of the second positioning plate 307. The guide blocks 308 have an I-shaped structure. A set of guide grooves are opened on the inner side of the sliding hole. One side of the guide block 308 extends into the interior of the guide groove. One distance sensor 4 is aligned with the first positioning plate 303, and the other distance sensor 4 is aligned with the clamping plate 306. Specifically, the T-shaped sliding hole and the I-shaped guide block 308 cooperate to provide bidirectional limiting and stable guidance for the second positioning plate 307, ensuring its precise and smooth lateral movement. The distance sensor 4 is aligned with the first positioning plate 303, the clamping plate 306, and the second positioning plate 307, and can detect the distance between the first positioning plate 303, the clamping plate 306, the second positioning plate 307 and the door panel in real time, providing data support for the precise positioning of the door panel.

[0042] In this embodiment, a stabilizing groove is formed on one side of the guide block 308. The stabilizing groove has a U-shaped structure. A vertical rack 310 is installed on the inner side of the stabilizing groove. A third electric motor 309 is installed on the outer side of the main body 1 of the cutting device. A gear is installed on one side of the drive shaft of the third electric motor 309. The gear meshes with the rack 310. The device includes a first electric motor 301, a one-way threaded rod 302, a first positioning plate 303, a second electric motor 304, a two-way threaded rod 305, a clamping plate 306, and a second positioning plate. The positioning assembly 3, consisting of 307, guide block 308, third electric motor 309, and rack 310, works together to form the positioning component 3. Specifically, the gear and rack 310 mesh to transmit power, converting the rotational motion of the third electric motor 309 into the lateral linear motion of the second positioning plate 307, thereby achieving precise position adjustment of the second positioning plate 307. The components of the positioning assembly 3 work together to position and clamp the door panel from multiple dimensions, both longitudinally and laterally, meeting the processing requirements of door panels of different sizes and shapes, and improving the flexibility and accuracy of positioning.

[0043] In this embodiment, a clamping groove is formed on the inner side of the stabilizing block 101 and the locking plate 102. The clamping groove has a V-shaped structure. The cutting head is installed between the stabilizing block 101 and the locking plate 102 for stability. An anti-loosening plate 602 is installed on the outer side of the locking plate 102. The two sides of the anti-loosening plate 602 correspond to the bolt mounting holes of the locking plate 102. A sliding hole corresponding to the positioning rod 601 is formed on the upper part of the anti-loosening plate 602. The positioning rod 601 passes through the interior of the sliding hole. A support spring is installed on the outer side of the positioning rod 601, and a retaining spring is installed on the upper part of the positioning rod 601. The support spring is positioned between the retaining ring and the anti-loosening plate 602. The positioning rod 601 and the anti-loosening plate 602 work together to form the anti-loosening structure 6. The support spring elastically presses the locking plate 102 downwards. The elastic force of the support spring is processed according to actual needs. Specifically, the clamping groove can adapt to the installation of cutting heads of different specifications, improving the versatility and stability of the cutting head installation. The anti-loosening structure 6 uses the elastic pressure of the support spring to make the anti-loosening plate 602 tightly adhere to the bolts of the locking plate 102, preventing the bolts from loosening due to vibration during device operation, ensuring that the cutting head is firmly installed, and avoiding displacement during the cutting process that affects the cutting accuracy.

[0044] Example 2, based on Example 1, such as Figures 1-8 As shown, a standard model of distance sensor 4 is selected according to actual needs, and a corresponding display and distance sensor 4 are electrically connected to be installed on one side of the main body 1 of the cutting device. Specifically, the display can display the door panel position data detected by the distance sensor 4 in real time, so that the operator can intuitively understand the positioning status and cutting progress of the door panel, which is convenient for timely detection and handling of cutting situations, and improves the convenience and reliability of operation.

[0045] The working principle of this embodiment:

[0046] Pull the anti-loosening plate 602 upwards, insert the cutting head into the clamping groove of the stabilizing block 101 and the locking plate 102, align the bolt holes and tighten the bolts, then reset the anti-loosening plate 602 to loosen the bolts, thus completing the anti-loosening fixation of the cutting head;

[0047] Place the door panel to be processed above the stabilizing plate 2, so that one side of the door panel abuts against the first positioning plate 303;

[0048] Start the second electric motor 304 to control the bidirectional threaded rod 305 to drive the clamping plate 306 to clamp the two sides of the door panel. At the same time, drive the first electric motor 301 to control the first positioning plate 303 to position the door panel. According to the door panel size, start the third electric motor 309 to adjust the lateral position of the second positioning plate 307 so that it is aligned with the other side of the door panel. View the data of the distance sensor 4 through the display.

[0049] When distance sensor 4 is activated, it automatically detects the movement positions of the first positioning plate 303, clamping plate 306, and second positioning plate 307. In conjunction with the positioning positions of the first positioning plate 303, clamping plate 306, and second positioning plate 307, distance sensor 4 measures the distance to the door panel and transmits the data to the control system. The system automatically plans the cutting path according to the preset cutting size and generates instructions to send to the cutting head drive mechanism.

[0050] The horizontal drive mechanism moves the stabilizing block 101 and the cutting head to the starting position; the cutting head is started, and the drive mechanism moves at a constant speed along the planned path to complete the door panel cutting.

[0051] After cutting, start the second electric motor 304 to release the clamping plate 306, start the third electric motor 309 to control the second positioning plate 307 to move downward and remove the processed door panel; place the new door panel, repeat the above positioning and clamping steps, and continue production.

Claims

1. A rapid distance-measuring door panel processing and cutting device, comprising: The cutting device includes a main body (1), a clamping plate (306), and a distance sensor (4). A set of transverse driving mechanisms is located above the main body (1). A transverse stabilizing block (101) is located on one side of the transverse driving mechanism. A locking plate (102) is bolted to one side of the stabilizing block (101). The locking plate (102) has a vertical positioning rod (601) located above it. A stabilizing plate (2) is installed on the inner side of the main body (1). A distance sensor (4) is bolted to one side of the main body (1). A first electric motor (301) is installed. A rotating connecting seat (201) is provided at the bottom of the stabilizing plate (2). A first positioning plate (303), a clamping plate (306), and a second positioning plate (307) are installed at the top of the stabilizing plate (2). The first positioning plate (303) and the second positioning plate (307) are each set to one. There are two clamping plates (306). A distance sensor (4) and a limit plate (5) are respectively installed at the top of the clamping plate (306) and the second positioning plate (307).

2. The door panel processing and cutting device for rapid distance measurement according to claim 1, characterized in that, A set of crisscrossing sliding holes are provided on the basis of the stabilizing plate (2). A sliding block is provided at the bottom of the first positioning plate (303), the clamping plate (306), and the second positioning plate (307). The sliding block passes through the inside of the sliding hole. A support block is provided on both sides of the sliding block. A set of positioning grooves is provided on the inner side of the sliding hole. The support block extends into the inside of the positioning groove.

3. The door panel processing and cutting device for rapid distance measurement according to claim 1, characterized in that, A set of crisscrossing rotating holes are opened on the basis of the rotating connecting seat (201). A one-way threaded rod (302) and a two-way threaded rod (305) are respectively inserted into the rotating holes. One side of the one-way threaded rod (302) is connected to the drive shaft of the first electric motor (301). A mounting groove is opened on one side of the stabilizing plate (2) based on the sliding hole. A second electric motor (304) is installed on the inner side of the mounting groove. The drive shaft of the second electric motor (304) is connected to one side of the two-way threaded rod (305). A keyway is provided on one side of the drive shaft.

4. The door panel processing and cutting device for rapid distance measurement according to claim 1, characterized in that, The sliding block of the first positioning plate (303) has a threaded hole corresponding to the one-way threaded rod (302). The one-way threaded rod (302) passes through the inside of the threaded hole and is threadedly connected to the threaded hole. The sliding blocks of the two clamping plates (306) each have a threaded hole corresponding to the two-way threaded rod (305). The spiral directions of the two threaded holes are opposite, and the two-way threaded rod (305) is threadedly connected to the threaded hole.

5. The door panel processing and cutting device for rapid distance measurement according to claim 1, characterized in that, One of the sliding holes of the stabilizing plate (2) is a T-shaped structure. A second positioning plate (307) is installed at the position of the T-shaped sliding hole. A set of vertical guide blocks (308) is provided at the bottom of the second positioning plate (307). The guide blocks (308) are I-shaped structures. A set of guide grooves are opened on the inner side of the sliding hole. One side of the guide block (308) extends into the interior of the guide groove. One distance sensor (4) is aligned with the first positioning plate (303), and the other distance sensor (4) is aligned with the clamping plate (306).

6. The door panel processing and cutting device for rapid distance measurement according to claim 5, characterized in that, A stabilizing groove is opened on one side of the guide block (308), and a vertical rack (310) is installed on the inner side of the stabilizing groove. A third electric motor (309) is installed on the outer side of the main body (1) of the cutting device. A gear is installed on one side of the drive shaft of the third electric motor (309), and the gear meshes with the rack (310). The first electric motor (301), the one-way threaded rod (302), the first positioning plate (303), the second electric motor (304), the two-way threaded rod (305), the clamping plate (306), the second positioning plate (307), the guide block (308), the third electric motor (309), and the rack (310) cooperate with each other to form the positioning assembly (3).

7. The door panel processing and cutting device for rapid distance measurement according to claim 1, characterized in that, The inner sides of the stabilizing block (101) and the locking plate (102) are respectively provided with a clamping groove. The clamping groove is a V-shaped structure. An anti-loosening plate (602) is installed on the outer side of the locking plate (102). The two sides of the anti-loosening plate (602) correspond to the bolt mounting holes of the locking plate (102). A sliding hole corresponding to the positioning rod (601) is provided on the upper part of the anti-loosening plate (602). The positioning rod (601) passes through the interior of the sliding hole. A support spring is installed on the outer side of the positioning rod (601). A snap ring is installed on the upper part of the positioning rod (601). The support spring is located between the snap ring and the anti-loosening plate (602). The positioning rod (601) and the anti-loosening plate (602) cooperate with each other to form an anti-loosening structure (6).

8. The door panel processing and cutting device for rapid distance measurement according to claim 1, characterized in that, A vertical sliding hole is provided above the clamping plate (306) and the second positioning plate (307). The sliding hole is rectangular and is located on one side of the distance sensor (4). A vertical limiting plate (5) is inserted inside the sliding hole. The limiting plate (5) is T-shaped and a nut is provided on one side of the distance sensor (4). One side of the limiting plate (5) and the side of the nut are in slight contact.

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