CN112621476A

CN112621476A - Bracelet forming machine

Info

Publication number: CN112621476A
Application number: CN202011488156.0A
Authority: CN
Inventors: 周泽平; 周泽武
Original assignee: Shenzhen Kingki Jewellery Co ltd
Current assignee: Shenzhen Kingki Jewellery Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-04-09
Anticipated expiration: 2040-12-16
Also published as: CN112621476B

Abstract

The application relates to the field of bracelet forming, in particular to a bracelet forming machine, which comprises a base, wherein a placing wheel for placing a bracelet, a polishing wheel for polishing an outer ring of the bracelet and a clamping assembly for clamping the bracelet are arranged on the base; the clamping assembly comprises two clamping wheels, and the two clamping wheels are respectively positioned on two sides of the polishing wheel and are not at the same horizontal height with the polishing wheel; an adjustment member for mounting the clamping wheel and adjusting the position of the clamping wheel so that the clamping wheel abuts the bracelet. This application has the effect that makes the bracelet centre gripping more stable.

Description

Bracelet forming machine

Technical Field

The application relates to the field of bracelet forming, in particular to a bracelet forming machine.

Background

The bracelet is made of gold, silver, jade and the like, and is a ring-shaped ornament sleeved on the wrist. In the bracelet manufacturing process, the bracelet needs to be polished.

Chinese patent publication No. CN205218711U discloses a polishing device for an outer circular surface of a jade bracelet, namely a bracelet forming machine, which comprises a base, a motor, a polishing wheel and a clamp, wherein one end of the base is provided with a vertical support plate, and a clamp shaft, a transmission shaft and a sand wheel shaft are sequentially fixed on the support plate from top to bottom; the axes of the clamp shaft, the transmission shaft and the sand wheel shaft are parallel to each other, a clamp for clamping the jade bracelet is fixed at one end of the clamp shaft, which is far away from the supporting plate, the clamp for clamping the jade bracelet comprises an elastic collet chuck and an expansion plug, and the expansion plug is a cone and is fixed in the elastic collet chuck through threaded connection. The outer side of the elastic collet chuck protrudes outwards to form a clamping boss, a positioning groove is formed in the clamping boss, and a rubber layer is coated in the positioning groove. The wheel face of the grinding wheel is inwards sunken to form an annular groove, and the positioning groove is opposite to the annular groove.

According to the bracelet forming machine in the related art, the labor intensity is reduced to a certain extent, and the jade bracelet is polished, however, in the using process of the bracelet forming machine, the bracelet is not stably clamped, so that the bracelet is unqualified in the polishing process due to unstable clamping.

Disclosure of Invention

In order to make the bracelet centre gripping more stable, this application provides a bracelet make-up machine.

The application provides a bracelet make-up machine adopts following technical scheme:

a bracelet forming machine comprises a base, wherein a placing wheel used for placing a bracelet, a polishing wheel used for polishing an outer ring of the bracelet and a clamping assembly used for clamping the bracelet are arranged on the base; the clamping assembly comprises a clamping component and a clamping component,

the two clamping wheels are respectively positioned at two sides of the polishing wheel and are not at the same horizontal height with the polishing wheel;

an adjustment member for mounting the clamping wheel and adjusting the position of the clamping wheel so that the clamping wheel abuts the bracelet.

By adopting the technical scheme, when the bracelet is ground, the bracelet is placed on the placing wheels, the two clamping wheels tightly support the bracelet at two sides of the bracelet, then the grinding wheel is attached to the bracelet, the bracelet is positioned and clamped by the three points, namely the two clamping wheels and the grinding wheel, and the bracelet is clamped and positioned by utilizing the principle that the three points which are not on a straight line determine a circle.

Optionally, a limiting ring groove matched with the bracelet is formed in the periphery of the clamping wheel.

Through adopting above-mentioned technical scheme, through setting up spacing annular, when centre gripping wheel and bracelet complex, the bracelet cooperatees with spacing annular for the bracelet is when polishing, makes the bracelet be difficult for rocking at the in-process of polishing.

Optionally, the adjusting part comprises a mounting table, an adjusting bolt and an adjusting table;

the mounting table is mounted on the base;

the adjusting table is arranged on the mounting table in a sliding manner, and the clamping wheel is rotatably connected to the adjusting table;

the adjusting bolt penetrates through the mounting table and is in threaded connection with the mounting table, and one end of the adjusting bolt is rotatably connected with the adjusting table.

Through adopting above-mentioned technical scheme, when the position of centre gripping wheel was adjusted to needs, through rotatory adjusting bolt, the regulation platform then removes along adjusting bolt's axis direction to drive the centre gripping wheel and remove.

Optionally, a limiting groove is formed in the mounting table, the adjusting table is provided with a sliding portion, and the sliding portion is located in the limiting groove and matched with the limiting groove in a sliding manner.

Through adopting above-mentioned technical scheme, realize the regulation station through the cooperation of portion of sliding and spacing groove and be connected with sliding of mount table.

Optionally, a ball groove is formed in the side wall of the limiting groove, a rotating ball is placed in the ball groove, and the rotating ball is abutted to the sliding portion.

Through adopting above-mentioned technical scheme, will adjust the friction between platform and the spacing groove and change into from sliding friction to rotating friction, reduce coefficient of friction to reduce the wearing and tearing between adjustment platform and the spacing groove.

Optionally, the polishing machine further comprises a driving mechanism for driving the polishing wheel, wherein the driving mechanism comprises a mounting seat, a driving motor, a screw rod and a sliding block;

the mounting seat is mounted on the base and provided with a threaded block, and a threaded hole is formed in the threaded block;

the driving motor is arranged on the mounting seat and used for driving the screw rod to rotate;

the screw rod penetrates through the base and the mounting seat and is in threaded connection with a threaded hole of the mounting seat;

the sliding block with the lead screw rotates to be connected, the sliding block both sides with the inner wall of base slides and is connected, the emery wheel of polishing install in the sliding block.

Through adopting above-mentioned technical scheme, through setting up actuating mechanism in order to realize the removal of polishing wheel, rotate through driving motor drive lead screw, then the lead screw drives the sliding block and removes along the axis direction of lead screw when rotating.

Optionally, the base inner wall is equipped with the guide way, open on the sliding block have with guide way complex guide block.

Through adopting above-mentioned technical scheme, realize the cooperation that slides of sliding block and base through the cooperation of guide block and guide way.

Optionally, a first connecting column is installed between the polishing wheel and the sliding block, the polishing wheel is installed on the sliding block through the first connecting column, an installation wheel is installed between the placing wheel and the base, and the placing wheel is installed on the base through the installation wheel;

the lower side of the first connecting column is provided with a first positioning column, the first positioning column is provided with a positioning groove, the upper end surface of the second connecting column is provided with a second positioning column, and the second positioning column can be embedded with the positioning groove.

Through adopting above-mentioned technical scheme, when the wheel of polishing was placed towards when the wheel slided, second reference column and the cooperation of first reference column to realize the location, so that polish the wheel and place between the wheel location when polishing accurate.

Optionally, the upper end surface of the second positioning column is arc-shaped, and the edge of the positioning groove is arc-shaped.

Through adopting above-mentioned technical scheme to make second reference column and constant head tank easily the cooperation of pegging graft.

Optionally, a pressure sensing piece is arranged on the upper end face of the second positioning column, and the pressure sensing piece comprises a protective cover and a pressure sensor;

the protective cover is made of flexible materials, the protective cover is installed on the upper end face of the second positioning column, and a placing cavity is formed between the protective cover and the second positioning column;

the pressure sensor is placed in place the chamber, the pressure sensor both sides respectively with the visor with the laminating of second reference column, the pressure sensor electricity is connected with the alarm, and when pressure sensor detected pressure, pressure sensor sent pressure signal, and the alarm accepts pressure signal and sends out the police dispatch newspaper.

Through adopting above-mentioned technical scheme, pressure sensor is used for responding to the cooperation relation of second reference column and first reference column, if the two does not have accurate cooperation, then pressure sensor detects pressure, and pressure sensor sends pressure signal, and the alarm accepts pressure signal and sends out the police dispatch newspaper.

In summary, the present application includes at least one of the following beneficial technical effects:

when the bracelet forming machine polishes a bracelet, the clamping and positioning of the bracelet are realized by utilizing the principle that three points which are not in a straight line determine a circle, and the clamping and positioning method is stable in clamping and has a shaping effect on the bracelet;

the friction between the adjusting table and the limiting groove is changed from sliding friction to rotating friction, so that the friction coefficient is reduced, and the abrasion between the adjusting table and the limiting groove is reduced;

the bracelet forming machine is matched with the first positioning column through the second positioning column, so that positioning is achieved, and the grinding wheel and the placing wheel are accurately positioned during grinding;

the bracelet forming machine of this application sets up pressure sensor for the cooperation relation of response second reference column and first reference column, if the two does not have accurate cooperation, then pressure sensor detects pressure, and pressure sensor sends pressure signal, and the alarm accepts pressure signal and sends the police dispatch newspaper.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of a bracelet forming machine according to the application.

Fig. 2 is a schematic structural view of a clamping wheel and an adjusting piece of one embodiment of the bracelet forming machine.

Fig. 3 is a schematic view of a mounting structure of a rotating ball at a limiting block in an embodiment of the bracelet forming machine.

Fig. 4 is a schematic structural diagram of a driving mechanism of an embodiment of the bracelet forming machine.

Fig. 5 is a partially enlarged view of a portion a in fig. 4.

Fig. 6 is a schematic view of a matching relationship between a first positioning column and a second positioning column of an embodiment of a bracelet forming machine according to the application.

Fig. 7 is a cross-sectional view of a second locating post of an embodiment of the bracelet forming machine of the present application.

Description of reference numerals:

1. a base; 11. a mounting surface; 12. an avoidance groove; 13. a guide groove;

2. placing a wheel; 21. mounting wheels; 22. a second connecting column; 23. a second positioning column; 231. a pressure sensing member; 232. a protective cover; 233. a placement chamber; 234. a pressure sensor;

3. grinding the wheel; 31. a first connecting column; 32. a first positioning post; 321. positioning a groove;

4. a clamping assembly; 41. a clamping wheel; 411. a limiting ring groove; 412. a sliding part; 42. an adjustment member; 421. an installation table; 4211. mounting a plate; 4212. an adjusting plate; 422. adjusting the bolt; 423. an adjusting table; 4231. a first plate; 4232. a second plate; 4233. a third plate; 424. a limiting block; 4241. a limiting groove; 425. a ball groove; 4251. rotating the ball;

5. a drive mechanism; 51. a mounting seat; 52. a drive motor; 53. a worm gear; 54. a worm; 55. a screw rod; 56. a slider; 561. and a guide block.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a bracelet forming machine. Referring to fig. 1, a bracelet forming machine comprises a base 1, wherein the base 1 is a hollow box body, one side surface of the base 1 is a mounting surface 11, and a placing wheel 2 for placing a bracelet, a grinding wheel 3 for grinding an outer ring of the bracelet and a clamping assembly 4 for clamping the bracelet are mounted on the mounting surface 11.

Specifically, the clamping assembly 4 includes a clamping wheel 41 and an adjustment member 42. The number of the clamping wheels 41 is two, the two clamping wheels 41 are respectively located on two sides of the grinding wheel 3 and are not at the same level with the grinding wheel 3, as shown in fig. 1, the two clamping wheels 41 are respectively located on two sides of the grinding wheel 3 and are located below the grinding wheel 3. The adjustment piece 42 is used to mount the clamping wheel 41 and adjust the position of the clamping wheel 41 so that the clamping wheel 41 abuts the bracelet.

Further, the side of the clamping wheel 41 is provided with a limiting ring groove 411 matched with the bracelet, the limiting ring groove 411 is an arc-shaped groove, and when the clamping wheel 41 is matched with the bracelet, the bracelet can be embedded in the limiting ring groove 411 to be matched with the limiting ring groove 411, so that the bracelet is not prone to shaking when being polished.

Referring to fig. 2, the adjusting member 42 includes a mounting table 421, an adjusting bolt 422, and an adjusting table 423. The mounting table 421 is mounted on the base 1, the mounting table 421 includes a mounting plate 4211 and an adjusting plate 4212, the mounting plate 4211 is attached to the mounting surface 11, the adjusting plate 4212 is mounted on one side of the mounting plate 4211 away from the mounting surface 11, and the mounting plate 4211 and the adjusting plate 4212 are distributed in an L shape. The adjustment stage 423 is slidably provided on the mounting plate 4211, and the aforementioned clamp wheel 41 is rotatably connected to the adjustment stage 423. The adjusting bolt 422 penetrates through the adjusting plate 4212 and is in threaded connection with the adjusting plate 4212, and one end of the adjusting bolt 422 is rotatably connected with the adjusting table 423. When the position of the clamping wheel 41 needs to be adjusted, the adjusting platform 423 moves along the axial direction of the adjusting bolt 422 by rotating the adjusting bolt 422, so as to drive the clamping wheel 41 to move.

In this embodiment, the adjusting table 423 includes a first plate 4231, a second plate 4232, and a third plate 4233, which are sequentially disposed, the first plate 4231 is attached to the mounting plate 4211, the first plate 4231 is slidable on the mounting plate 4211, both sides of the second plate 4232 are respectively fixedly connected to the first plate 4231 and the third plate 4233, the adjusting bolt 422 is rotatably connected to the second plate 4232, and the clamping wheel 41 is mounted to the third plate 4233. Two limiting blocks 424 are fixedly connected to the mounting plate 4211, a limiting groove 4241 is formed in the middle of the two limiting blocks 424, a limiting portion extends from one side of the third plate 4233, the two sides of the limiting portion are attached to the limiting blocks 424, and the limiting portion can slide in the limiting groove 4241. The sliding connection between the adjusting table 423 and the mounting table 421 is realized through the matching of the sliding part 412 and the limiting groove 4241; meanwhile, the limiting part can limit the sliding stroke of the first plate 4231, and the bracelet can be prevented from falling off from the placing wheel 2 due to excessive sliding of the adjusting table 423.

Referring to fig. 3, further, a ball groove 425 is formed in a side wall of the retaining groove 4241, a rotating ball 4251 is placed in the ball groove 425, and the rotating ball 4251 abuts against the sliding portion 412. The rotating ball 4251 converts the friction between the adjustment stage 423 and the stopper groove 4241 from sliding friction to rotating friction, and reduces the friction coefficient, thereby reducing the wear between the adjustment stage 423 and the stopper groove 4241. A friction pad may be added around the sliding portion 412 to reduce the wear between the rotary ball 4251 and the sliding portion 412, and to increase the friction force and reduce the slip between the rotary ball 4251 and the sliding portion 412.

As shown in fig. 3, more than half of the rotary ball 4251 is positioned in the ball groove 425, so that the rotary ball 4251 cannot be separated from the ball groove 425 and can still rotate, and during production and installation, the ball groove 425 can be dug, then the rotary ball 4251 is placed in the ball groove 425, and then the opening of the ball groove 425 is closed, so that the rotary ball 4251 is partially exposed. In this embodiment, the exposed portion of the rotating ball 4251 is one third of the rotating ball 4251, and at this time, the rotating ball 4251 is not easy to be separated, and the seal is not easily damaged due to too large stress.

Referring to fig. 4, the bracelet forming machine of the present application further includes a driving mechanism 5 for driving the grinding wheel 3, and the driving mechanism 5 includes a mounting seat 51, a driving motor 52, a worm wheel 53, a worm 54, a lead screw 55 and a slide block 56. Wherein, the mounting seat 51 is mounted on the upper end surface of the base 1, and the mounting seat 51 is used for protecting other components of the driving mechanism 5; the driving motor 52 is installed on the base 1 for driving the worm 54 to rotate, the worm 54 is meshed with the worm wheel 53, the worm wheel 53 is rotatably connected to the inner bottom wall of the installation seat 51, the lead screw 55 penetrates through the base 1 and the installation seat 51 and is in threaded connection with the worm wheel 53, the sliding block 56 is fixedly connected with the lead screw 55, two sides of the sliding block 56 are connected with the inner wall of the base 1 in a sliding manner, and the grinding wheel 3 is installed on the sliding block 56. The worm 54 is driven by the driving motor 52 to rotate, the worm 54 drives the worm wheel 53 to rotate, and the screw 55 slides in the vertical direction when the worm wheel 53 rotates, so as to drive the sliding block 56 to slide.

Further, the inner wall of the base 1 is provided with a guide groove 13, and the sliding block 56 is provided with a guide block 561 which is matched with the guide groove 13. The sliding engagement of the slide block 56 with the base 1 is achieved by the engagement of the guide block 561 with the guide groove 13.

Referring to fig. 5, a plurality of sets of ball grooves 425 are formed in the inner wall of the guide groove 13, a rotating ball 4251 is placed in each ball groove 425, the structure of the rotating ball 4251 is similar to that of the limiting groove 4241, the rotating ball 4251 converts the friction between the guide block 561 and the guide groove 13 from sliding friction to rotating friction, the friction coefficient is reduced, and therefore the abrasion between the guide block 561 and the guide groove 13 is reduced.

Referring to fig. 4 and 6, a first connecting column 31 is installed between the polishing wheel 3 and the sliding block 56, an avoiding groove 12 is formed in the base 1 for the first connecting column 31 to slide, the polishing wheel 3 is installed on the sliding block 56 through the first connecting column 31, an installation wheel 21 is installed between the placing wheel 2 and the base 1, a second connecting column 22 extends from the installation wheel 21, and the placing wheel 2 is fixedly connected to the second connecting column 22; the lower side of the first connecting post 31 is fixedly connected with a first positioning post 32, the first positioning post 32 is provided with a positioning groove 321, the upper end surface of the second connecting post 22 is fixedly connected with a second positioning post 23, and the second positioning post 23 can be embedded with the positioning groove 321. When the grinding wheel 3 slides towards the placing wheel 2, the second positioning column 23 is matched with the first positioning column 32, so that the positioning is realized, and the positioning between the grinding wheel 3 and the placing wheel 2 is accurate during the grinding.

In this embodiment, a plurality of sets of ball grooves 425 are formed in the inner wall of the avoiding groove 12, a rotating ball 4251 is placed in the ball groove 425, the structure of the ball groove is similar to that of the limiting groove 4241, the rotating ball 4251 converts the friction between the first connecting column 31 and the avoiding groove 12 from sliding friction into rotating friction, the friction coefficient is reduced, and therefore the abrasion between the first connecting column 31 and the avoiding groove 12 is reduced.

Referring to fig. 7, in the embodiment, the upper end of the second positioning column 23 is arc-shaped, and the edge of the positioning slot 321 is arc-shaped. So that the second positioning column 23 and the positioning slot 321 are easily inserted and matched.

Further, a pressure sensing part 231 is arranged on the upper end surface of the second positioning column 23, and the pressure sensing part 231 includes a protective cover 232 and a pressure sensor 234; the protective cover 232 is made of a flexible material, the protective cover 232 is mounted on the upper end face of the second positioning column 23, and a placing cavity 233 is formed between the protective cover 232 and the second positioning column 23; pressure sensor 234 is placed in placing chamber 233, and pressure sensor 234 both sides are laminated with visor 232 and second reference column 23 respectively, and pressure sensor 234 electricity is connected with the alarm, and when pressure sensor 234 detected pressure, pressure sensor 234 sent pressure signal, and the alarm receives pressure signal and sends out the police dispatch newspaper.

The pressure sensor 234 is used for sensing the matching relationship between the second positioning column 23 and the first positioning column 32, if the two are not precisely matched, the pressure sensor 234 detects the pressure, the pressure sensor 234 sends a pressure signal, and the alarm receives the pressure signal and gives an alarm.

The implementation principle of the bracelet forming machine provided by the embodiment of the application is as follows: when an bracelet is ground, the bracelet is placed on the placing wheel 2, the two clamping wheels 41 tightly abut against the bracelet at two sides of the bracelet, then the grinding wheel 3 is attached to the bracelet, positioning and clamping of the bracelet are realized through three points, namely the two clamping wheels 41 and the grinding wheel 3, the clamping and positioning of the bracelet are realized by utilizing the principle that three points which are not in a straight line determine a circle, and the clamping and positioning method is stable in clamping and has a shaping effect on the bracelet.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A bracelet forming machine is characterized in that: the bracelet fixing device comprises a base (1), wherein a placing wheel (2) used for placing a bracelet, a polishing wheel (3) used for polishing an outer ring of the bracelet and a clamping assembly (4) used for clamping the bracelet are arranged on the base (1); the clamping assembly (4) comprises a clamping component,

the two clamping wheels (41) are respectively positioned at two sides of the grinding wheel (3) and are not at the same horizontal height with the grinding wheel (3);

an adjustment member (42) for mounting the clamping wheel (41) and adjusting the position of the clamping wheel (41) such that the clamping wheel (41) abuts the bracelet.

2. A bracelet forming machine according to claim 1, wherein: and a limiting ring groove (411) matched with the bracelet is formed in the peripheral side of the clamping wheel (41).

3. A bracelet forming machine according to claim 1, wherein: the adjusting piece (42) comprises a mounting table (421), an adjusting bolt (422) and an adjusting table (423);

the mounting table (421) is mounted on the base (1);

the adjusting table (423) is arranged on the mounting table (421) in a sliding manner, and the clamping wheel (41) is rotationally connected with the adjusting table (423);

the adjusting bolt (422) penetrates through the mounting table (421) and is in threaded connection with the mounting table (421) (an adjusting plate (4212)), and one end of the adjusting bolt (422) is in rotary connection with the adjusting table (423).

4. A bracelet forming machine according to claim 3, wherein: the mounting table (421) is provided with a limiting groove (4241), the adjusting table (423) is provided with a sliding part (412), and the sliding part (412) is positioned in the limiting groove (4241) and is in sliding fit with the limiting groove (4241).

5. A bracelet forming machine according to claim 4, wherein: a ball groove (425) is formed in the side wall of the limiting groove (4241), a rotating ball (4251) is placed in the ball groove (425), and the rotating ball (4251) is abutted to the sliding portion (412).

6. A bracelet forming machine according to any one of claims 1-5, wherein: the grinding wheel mechanism further comprises a driving mechanism (5) for driving the grinding wheel (3), wherein the driving mechanism (5) comprises a mounting seat (51), a worm wheel (53), a worm (54), a driving motor (52), a screw rod (55) and a sliding block (56);

the mounting seat (51) is mounted on the base (1);

the driving motor (52) is arranged on the mounting seat (51) and used for driving the worm (54) to rotate;

the worm (54) is meshed with the worm wheel (53), and the worm wheel (53) is rotatably connected to the inner bottom wall of the mounting seat (51);

the screw rod (55) penetrates through the base (1) and the mounting seat (51) and is in threaded connection with a threaded hole of the worm wheel (53);

the sliding block (56) is fixedly connected with the screw rod (55), two sides of the sliding block (56) are connected with the inner wall of the base (1) in a sliding mode, and the grinding wheel (3) is installed on the sliding block (56).

7. A bracelet forming machine according to claim 6, wherein: the inner wall of the base (1) is provided with a guide groove (13), and the sliding block (56) is provided with a guide block (561) matched with the guide groove (13).

8. A bracelet forming machine according to claim 7, wherein: a first connecting column (31) is installed between the polishing wheel (3) and the sliding block (56), the polishing wheel (3) is installed on the sliding block (56) through the first connecting column (31), an installation wheel (21) is installed between the placing wheel (2) and the base (1), and the placing wheel (2) is installed on the base (1) through the installation wheel (21);

first spliced pole (31) downside is provided with first reference column (32), first reference column (32) are opened there is constant head tank (321), second spliced pole (22) up end is provided with second reference column (23), second reference column (23) can with constant head tank (321) looks gomphosis.

9. A bracelet forming machine according to claim 8, wherein: the upper end surface of the second positioning column (23) is arc-shaped, and the edge of the positioning groove (321) is arc-shaped.

10. A bracelet forming machine according to claim 9, wherein: a pressure sensing piece (231) is arranged on the upper end face of the second positioning column (23), and the pressure sensing piece (231) comprises a protective cover (232) and a pressure sensor (234);

the protective cover (232) is made of flexible materials, the protective cover (232) is installed on the upper end face of the second positioning column (23), and a placing cavity (233) is formed between the protective cover (232) and the second positioning column (23);

pressure sensor (234) place in place chamber (233), pressure sensor (234) both sides respectively with visor (232) and second reference column (23) laminating, pressure sensor (234) electricity is connected with the alarm, detects pressure when pressure sensor (234), and pressure sensor (234) send pressure signal, and the alarm accepts pressure signal and sends out the police dispatch newspaper.