CN216013694U

CN216013694U - Iron fillings detection device is examined to pincers body seal groove

Info

Publication number: CN216013694U
Application number: CN202121250654.1U
Authority: CN
Inventors: 王志欣; 郑燕青; 郑旭明; 边疆
Original assignee: Zhejiang Asia Pacific Mechanical and Electronic Co Ltd
Current assignee: Zhejiang Asia Pacific Mechanical and Electronic Co Ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-03-11
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a detection device for detecting scrap iron in a sealing groove of a clamp body. The bracket is driven by the advancing cylinder to horizontally move downwards under the guide of a horizontal sliding pair of the sliding block guide rail assembly; the first support is driven by the cylinder rods of the upper and lower cylinders to move up and down under the guidance of the upper and lower sliding pairs; the upper end of the measuring rod penetrates through the through holes of the tool plate and the tool supporting plate and then is fixedly connected with the detection head, and the detection head extends into the brake caliper from bottom to top; a front-back adjusting assembly and a left-right adjusting assembly are arranged on the tool supporting plate beside two adjacent sides of the tool plate and are arranged vertically; the pinion fixing motor operates to drive the pinion to rotate, the gear pair drives the bull gear to rotate, and the transmission shaft drives the measuring rod and the detecting head on the measuring rod to rotate. The utility model is used for solving the problem of chip storage inspection in the groove of mass-produced parts, reducing the product cost, being convenient to use on equipment, and being simple, easy to realize and low in price.

Description

Iron fillings detection device is examined to pincers body seal groove

Technical Field

The utility model relates to a detection device and a structure in a clamp body, in particular to a detection device for detecting scrap iron in a seal groove of the clamp body, which is used for detecting the scrap iron in clamp bodies or conductor grooves.

Background

The brake caliper body has three grooves inside for the requirement of working characteristics. The sealing groove is very important, but in daily brake caliper body processing, because of the change of caliper body material and material composition, the processing condition changes, when processing the sealing groove, have iron fillings card in the sealing groove, through conventional washing, the blowing also can't be clear away, can cause the brake fluid to leak after such product assembly, causes the brake bad, causes the accident. The problem is solved, except that the processing conditions, the raw material component ratio, the cutter blade grinding and cutting off the cutter groove, the processing procedure and the like are improved, in order to ensure that the product is 100 percent qualified, the sealing groove is checked before assembly, so that the situation is prevented. At present, the main method for inspecting the sealing groove of the clamp body is manual work, but due to the fact that the manual work has visual fatigue, the inspection is easy to miss after long-time work. Secondly also detect with imaging device, this raises the efficiency greatly, but finds in the practical application if the pincers body zinc-plating back, when iron fillings and pincers body background colour extremely unanimous, the false retrieval can appear in the camera, judges the product that contains iron fillings qualified. In addition, the detection camera needs to be specially made because the detection camera needs to extend into the cylinder hole of the clamp body, and a set of detection camera is expensive.

The utility model has the following contents:

in order to solve the problem, the utility model provides the special mandrel for detecting the iron chips in the sealing groove of the clamp body, and the semi-automatic detection can be realized by simply configuring PLC control, so that the efficiency can be improved, and the cost can be saved.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model comprises a lathe bed, a pinion fixing motor, a pinion, a gearwheel, a transmission shaft, an advancing cylinder, a bracket, a slide block guide rail assembly, an upper cylinder, a lower cylinder, a first bracket, a pressing cylinder, a pressing block, a tooling plate, a tooling supporting plate and a measuring rod; an advancing cylinder support is fixedly arranged on one side of the lathe bed, an advancing cylinder is arranged on the advancing cylinder support, the advancing cylinder is horizontally arranged, and a cylinder rod of the advancing cylinder penetrates through the advancing cylinder support and then is fixedly connected with the advancing cylinder rod fixing support;

an advancing position positioning bolt support is fixedly arranged on the lathe bed, the tail end of the cylinder rod of the front air inlet cylinder extends to the side of the limit position, an advancing position positioning bolt is arranged on the advancing position positioning bolt support, and the advancing position positioning bolt is used for stopping the advancing cylinder rod fixing support from carrying out limit position limiting of the horizontal movement.

The top surface of the advancing cylinder rod fixing support is fixedly provided with a bracket which is vertically arranged, the middle part of the bottom surface of the bracket is fixedly connected with the advancing cylinder rod fixing support, both sides of the bottom surface of the bracket are symmetrically provided with a sliding block guide rail assembly, and the bracket is driven by an advancing cylinder to horizontally move downwards under the guide of a horizontal sliding pair of the sliding block guide rail assembly;

an upper cylinder support and a lower cylinder support are fixedly arranged on the top surface of the bracket, an upper cylinder and a lower cylinder are fixedly arranged on the upper cylinder support and the lower cylinder support, cylinder rods of the upper cylinder and the lower cylinder downwards penetrate through the upper cylinder support and the lower cylinder support and then are fixedly connected with the upper cylinder rod support and the lower cylinder rod support, and the upper cylinder rod support and the lower cylinder rod support are fixed on the side surface of the middle part of the first support; the upper and lower guide rail sizing blocks are fixedly arranged on the side surface of the bracket, the upper and lower guide rail sizing blocks are fixedly provided with upper and lower guide rails, the upper and lower guide rails are arranged in parallel to the cylinder rods of the upper and lower cylinders, upper and lower sliding blocks are embedded on the upper and lower guide rails in a sliding manner, the upper and lower guide rails and the upper and lower sliding blocks form an upper and lower sliding pair, and the upper and lower sliding blocks are fixedly connected to the side surface of the middle part of the first bracket; the first support is driven by the cylinder rods of the upper and lower cylinders to move up and down under the guidance of the upper and lower guide rails and the upper and lower sliding pairs of the upper and lower sliding blocks;

the lower bolt is installed at the bottom of the bracket below the first support and used for stopping the first support from limiting at the lower limit position of the up-down lifting movement.

And the top surfaces of the brackets at the two sides of the upper and lower air cylinders are also provided with upper limiting bolt supports, the upper limiting bolt supports are provided with upper bolts, and the upper bolts are used for stopping the upper limiting positions of the first supports from moving up and down for limiting.

The first support is formed by fixedly splicing an L-shaped tool supporting plate positioned at the middle lower part and a flat pressing cylinder support positioned at the upper part; a pressing cylinder is mounted on a pressing cylinder support at the top of the first support, a piston rod of the pressing cylinder downwards penetrates through the pressing cylinder support and then is fixedly connected with a pressing block, a through hole is formed in the pressing cylinder support beside the pressing cylinder, a guide rod is movably inserted into the through hole, the lower end of the guide rod is fixedly connected with a guide rod support, the guide rod support is fixedly connected with the pressing block, and the lower end of the pressing block is fixedly connected with a brake caliper; a tooling plate is arranged on a tooling support plate at the bottom of the first support, the tooling plate is movably arranged on the tooling support plate in a horizontal plane manner through a tooling plate compression bolt, vertical positioning pins are symmetrically and fixedly arranged on two sides of the tooling plate, and two side parts of the brake calipers are fixed at the tops of the positioning pins; all set up the through hole on frock board and the frock backup pad, behind the through hole of frock board and frock backup pad is passed to the measuring stick upper end and detect first bottom fixed connection, detect the head from up stretching into brake caliper down.

The tooling plate is provided with a large round hole, the tooling plate compression bolt penetrates through the large round hole of the tooling plate and then is in threaded connection with the tooling support plate, the diameter of the large round hole is larger than that of the tooling plate compression bolt, so that the tooling plate can be horizontally moved and adjusted on the tooling support plate, and the gap between the large round hole and the tooling plate compression bolt is the adjustment gap.

And a front and rear adjusting component and a left and right adjusting component are arranged on the tool supporting plate beside two adjacent sides of the tool plate, and the front and rear adjusting component and the left and right adjusting component are vertically arranged.

The lower end of the measuring rod is coaxially connected with the upper end of the transmission shaft through a transmission pin; the lower end of the transmission shaft penetrates through the lathe bed, a motor support is arranged at the bottom of the lathe bed, a pinion fixing motor is arranged on the motor support, an output shaft of the pinion fixing motor is coaxially connected with a pinion through a pinion bolt, the pinion and a gearwheel form a gearwheel pair in a meshed manner, and the gearwheel is coaxially sleeved with the lower end of the transmission shaft through a first flat key and is axially fixed through a gearwheel locking nut; the pinion fixing motor operates to drive the pinion to rotate, the gear pair drives the bull gear to rotate, and the transmission shaft drives the measuring rod and the detecting head on the measuring rod to rotate.

Each sliding block guide rail component comprises a front sliding block, a rear sliding block, a front guide rail, a rear guide rail and front and rear guide rail sizing blocks, the front and rear sliding blocks are fixed on the bottom surface of the bracket, the front and rear sliding blocks are embedded on the front and rear guide rails in a sliding mode, a horizontal sliding pair is formed between the front and rear sliding blocks and the front and rear guide rails, the front and rear guide rails are arranged along a cylinder rod parallel to the advancing cylinder, and the front and rear guide rails are fixed on the machine body through the front and rear guide rail sizing blocks.

The gas distribution ring is sleeved outside the measuring rod on the transmission shaft, an insulating bump is fixed on one side of the outer side wall of the measuring rod above the gas distribution ring, the insulating bump rotates along with the measuring rod, a sliding head of a first sliding head and a sliding line is installed on the bottom surface of the insulating bump, the sliding head of the first sliding head and the sliding line is pressed in the protruding block through a pressing bolt and a pressing spring, one end of the sliding head of the first sliding head and the sliding line is electrically connected with the sliding head, and the other end of the sliding head is electrically connected to the detecting head at the top end of the measuring rod through the surface of the measuring rod or an internal wiring line.

An air channel is arranged in the measuring rod at the position of the air distribution ring, the side wall of the measuring rod above the air distribution ring is provided with a measuring rod air pipe opening, the inner end of the measuring rod air pipe opening is communicated with the air channel, the outer end of the measuring rod air pipe opening is connected to an air inlet hole of the detecting head through a pipeline with synchronous rotation of the measuring rod,

the outer side of the gas distribution ring is provided with a gas pipe connector, the outer circumferential surface of the measuring rod where the gas pipe connector is located is provided with an annular gas groove, the gas pipe connector is communicated with the annular gas groove through a radial channel inside the gas distribution ring, and the annular gas groove is communicated with the gas flow passage through a radial through hole.

The top surface of the transmission shaft is provided with a blind hole, a positioning spring is installed in the blind hole, and the upper end of the positioning spring is connected to the bottom surface of the measuring rod.

The anti-rotation fork is arranged on the bed body, and the air pipe joint is embedded in a notch at the upper end of the anti-rotation fork.

The front and back adjusting assembly comprises a tool adjusting support, a tool adjusting support fixing bolt and a front and back adjusting bolt, the tool adjusting support is fixed on a tool supporting plate, a horizontal threaded hole is formed in the tool adjusting support, the front and back adjusting bolt is installed in the horizontal threaded hole in a threaded mode, and the front and back adjusting bolt penetrates through the horizontal threaded hole and then is connected to the side face of the tool plate;

the left and right adjusting assembly comprises a left and right tool adjusting bolt support, a left and right tool adjusting bolt and a left and right tool adjusting bolt support bolt, the left and right tool adjusting bolt support is fixed on the tool supporting plate, a horizontal threaded hole is formed in the left and right tool adjusting bolt support, the left and right tool adjusting bolt is installed in the horizontal threaded hole in a threaded manner, and the left and right tool adjusting bolt penetrates through the horizontal threaded hole and then is connected to the side surface of the tool plate; the front and rear adjusting bolts and the left and right adjusting bolts of the tool are vertically arranged and are respectively connected to two vertical side surfaces of the tool plate, and the plane position of the tool plate on the tool supporting plate is adjusted by screwing or screwing the front and rear adjusting bolts and the left and right adjusting bolts of the tool.

The detection head comprises a measuring head, a piston, a measuring head spring, a measuring head compression spring, a measuring head adjusting rod, a piston adjusting ring, a measuring head adjusting nut, a measuring head locknut, a piston body fixing nut, a piston adjusting nut, a piston body, a piston spring and a piston shell; the piston shell is internally provided with an installation channel, the head part of the installation channel is internally provided with a piston body, the tail part of the installation channel is internally provided with a piston body fixing nut, the piston body fixing nut is installed in a threaded hole at the tail part of the installation channel through threads, and the head end surface of the piston body fixing nut is connected to the tail end surface of the piston body so as to tightly press the piston body on the step surface at the head part of the installation channel; the piston body is hollow and provided with a piston, the inner peripheral surface of the head part of the piston body is provided with an inner flange, the outer peripheral surface of the piston in the piston body, which is close to the head part, is provided with an outer flange, and the outer flange of the piston is connected to the inner flange of the piston body; a piston adjusting nut is sleeved between the tail of the piston and the tail of the piston body, the piston adjusting nut is installed in a threaded hole in the tail of the piston body through threads, a piston locknut is installed in a central threaded hole of a piston body fixing nut through threads, and the head end face of the piston locknut is connected to the tail end face of the piston adjusting nut to tightly press the piston adjusting nut on the step face of the inner wall of the tail of the piston body; a piston spring and a piston adjusting ring are arranged in an annular gap between the piston body and the piston, which is positioned between the piston adjusting nut and the piston outer flange, the piston adjusting ring is in contact connection with the end surface of the head of the piston adjusting nut, two ends of the piston spring are respectively connected with the piston outer flange and the piston adjusting ring, and the tail part of the piston is in clearance fit with the piston adjusting nut;

the piston is internally provided with a cavity, a measuring head adjusting rod, a measuring head adjusting nut and a measuring head check nut are sequentially arranged in the cavity from the head to the tail of the piston, an inner flange is arranged on the inner peripheral surface of the head of the piston, an outer flange is arranged on the outer peripheral surface of the tail end of the measuring head in the piston, a measuring head spring is sleeved outside the measuring head in the piston, the stepped surface of the head end of the outer flange is connected with the stepped surface of the tail end of the inner flange of the piston through the measuring head spring, the tail end surface of the outer flange of the measuring head is connected with the head end surface of the measuring head adjusting rod through a measuring head compression spring, and the tail end surface of the measuring head adjusting rod is connected with the head end surface of the measuring head adjusting nut; the measuring head adjusting nut is installed in a threaded hole in the tail of the piston through threads, the measuring head locknut is installed in a central threaded hole of the piston through threads, and the head end face of the measuring head locknut is connected to the tail end face of the measuring head adjusting nut so as to limit the measuring head adjusting nut in the piston; and the measuring head locknut is provided with a power-on spring, and the power-on spring is arranged in a hole formed in the end face of the measuring head locknut through a wire fixing bolt.

The measuring head, the measuring head compression spring, the measuring head adjusting rod and the measuring head adjusting nut are all metal pieces and are sequentially and electrically connected, the measuring head end extends out of the piston and then is used for electrically contacting scrap iron in the sealing groove, the measuring head adjusting nut is electrically connected with the electrified spring, and the electrified spring is electrically connected with the detection line of the first sliding head and the detection line through a signal line.

An air inlet is formed in the outer side wall of the piston shell outside the step face of the inner flange of the piston body, the air inlet is communicated with a measuring rod air pipe opening of the measuring rod through an air pipe, an annular groove is formed in the outer side wall of the piston body at the step face of the inner flange of the piston body, a plurality of air channels are formed in the annular groove at intervals along the circumference and communicated with a gap between the inner flange of the piston body and the outer flange of the piston, the gap is communicated with the annular groove through the air channels, and the annular groove is communicated with the measuring rod air pipe opening of the measuring rod through the air inlet.

The utility model has a conductor measuring head part and a non-conductor engineering plastic piston part which move mutually and are in insulation disconnection with a piston shell; the conductor measuring head part comprises a measuring head, a measuring head spring, a measuring head compression spring, an adjusting rod, an adjusting bolt, a check bolt, a power-on spring and a signal line fixing bolt; the middle of the detection head is provided with a power-on spring to ensure that the signal wire can be screwed down and can be conducted with the detection head, and an electric signal of the detection head is led out.

The utility model has the beneficial effects that:

1, replace artifical the detection, avoid artifical have visual fatigue, long-time work easily causes lou to examine.

And 2, the existing imaging detection equipment is replaced, so that the efficiency is greatly improved, and the qualified rate is improved. (in the practical application of the imaging equipment, if the iron chips are extremely consistent with the background color of the clamp body after the zinc plating is carried out on the clamp body, the false detection of the camera can occur, and the product containing the iron chips is judged to be qualified.)

3, saving the cost: the special core shaft for detecting the iron chips in the sealing groove of the clamp body is simply controlled by a PLC (programmable logic controller), so that semi-automatic detection can be realized, and one set of high-definition imaging equipment is more than 5 ten thousand.

4, the technical problem to be solved by the utility model can be popularized to the inspection technology of conductor slot machining chips or reference significance.

Drawings

The utility model is further described with reference to the accompanying drawings and the detailed description below:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic left side view of the structure of FIG. 1;

FIG. 3 is a schematic left side view of the structure of FIG. 1;

FIG. 4 is a schematic cross-sectional view of FIG. 1 taken along line D-D;

FIG. 5 is a side view of the adjusted mounting arrangement between the tooling plate and the tooling support plate;

FIG. 6 is a top view of the structural relationship between tooling plate and tooling support plate for adjustment mounting;

FIG. 7 is a schematic view of a measuring head of FIG. 1 in the direction A-A;

FIG. 8 is a schematic view of the structure of FIG. 1 along the line B-B;

FIG. 9 is a schematic view of the structure of FIG. 1 taken along the direction C-C;

FIG. 10 is a schematic view of the present invention with the air intake holes;

FIG. 11 is a schematic view of the M-M structure of FIG. 10;

FIG. 12 is a schematic diagram of the detection of the position of the iron chips in the sealing groove.

In the figure: the device comprises a pressing cylinder 1, a guide rod 2, a cylinder fixing bolt 3, a pressing cylinder bracket 4, a pressing cylinder bracket fixing bolt 5, a pressing cylinder piston rod 6, a guide rod bracket fixing bolt 7, a guide rod bracket 8, a pressing block 9, a detection head 10 and a brake caliper (detection piece) 11; the measuring head comprises a measuring head 12, a piston 13, a measuring head spring 14, a measuring head compression spring 15, a measuring head adjusting rod 16, a piston adjusting ring 17, a measuring head adjusting nut 18, a measuring head locknut 19, a measuring head lockscrew 20, an energizing spring 21, an electric wire fixing bolt 22, a piston locknut 23, a piston body fixing nut 24, a piston adjusting nut 25, a piston body 26, a piston spring 27, a piston shell 28, a piston body sealing ring 29 and a piston sealing ring 30; the device comprises a measuring rod 31, a tool adjusting bracket 32, a tool adjusting bracket fixing bolt 33, a front and rear adjusting bolt 34, a tool plate 35, a lower bolt 36, an insulating sleeve screw 37, a tool supporting plate 38, a pressing bolt 39, a pressing spring 40, a first sliding head and a detection line 41, a second sliding head and a detection line 42, a gas pipe joint 43, a gas distribution ring 44, a gas distribution ring sealing ring 45, a gas distribution ring adjusting ring 46, a transmission pin 47, a stop pin ring 48, a screw plug 49, a plane thrust bearing 50, a positioning spring 51, a transmission shaft 52, an angular contact bearing 53, a round nut 54, a large gear 55, a first flat key 56, a gear locking nut 57, a motor bolt 58, a small gear fixing motor 59, a second flat key 60, a small gear bolt 61, a gasket 62, a small gear 63, a motor bracket 64, a motor bracket fixing bolt 65, an advancing position positioning bolt bracket bolt 66, an advancing position positioning bolt bracket 67, An advance position positioning bolt 68, an advance cylinder rod fixing nut 69, an advance cylinder rod 70, an advance cylinder bracket 71, an advance cylinder bracket fixing bolt 72, a bed 73, an advance cylinder fixing bolt 74, an advance cylinder 75, front and rear guide rails 76, an advance cylinder rod fixing bracket 77, an advance cylinder rod fixing bracket fixing bolt 78, a front and rear slider 79, an advance slider fixing bolt 80, upper and lower guide rails 81, upper and lower guide rail fixing bolts 82, upper and lower guide rail sizing block fixing bolts 83, upper and lower guide rail sizing blocks 84, upper and lower slider fixing bolts 85, upper and lower sliders 86, upper and lower cylinder rod bracket fixing bolts 87, upper and lower cylinder rod fixing bolts 88, upper and lower cylinder rod brackets 89, upper and lower cylinder rods 90, a bracket 91, upper and lower cylinder brackets 92, upper and lower cylinder bracket fixing bolts 93, an upper limit bolt bracket 94, upper and lower cylinders 95, upper bolts 96, a positioning column pin 97, lower cylinder rod fixing bolts 82, an upper and lower cylinder rod fixing bolts 83, a lower cylinder rod fixing bolt bracket fixing bolt 83, an upper and a lower cylinder bracket fixing bolt, The tool plate is provided with a clamp bolt 98, a flat gasket 99 for bolts, a left and right tool adjusting bolt bracket 100, a left and right tool adjusting bolt 101, a front and rear guide rail sizing block fixing bolt 102, a front and rear guide rail sizing block 103, an anti-rotation fork 104, a fastening screw 105, a signal wire 106 and an air pipe 107.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-4, the device of the present invention comprises a measuring head with an inspection function, a measuring shaft assembly (fig. 1 mainly comprises a measuring rod 31, a hold-down bolt 39, a hold-down spring 40, a sliding head and a detection line 41, a sliding ring and a detection line 42, a gas distribution ring 44, a gas distribution ring sealing ring 45, an adjusting ring 56, a driving pin 47, a stop pin ring 48, a positioning spring 51, etc.), an anti-rotation fork plate, a measuring shaft driving mechanism, and a product clamping moving mechanism. The device comprises a lathe bed 73, a pinion fixing motor 59, a pinion 63, a gearwheel 55, a transmission shaft 52, an advancing cylinder 75, a bracket 91, a slide block guide rail assembly, an upper cylinder 95, a lower cylinder 95, a first support, a pressing cylinder 1, a pressing block 9, a tooling plate 35, a tooling supporting plate 38 and a measuring rod 31; the first bracket is mainly formed by combining an L-shaped tool supporting plate 38 positioned at the middle lower part and a flat plate-shaped pressing cylinder bracket 4 positioned at the upper part.

An advancing cylinder bracket 71 is fixedly mounted on one side of the bed 73 through an advancing cylinder bracket fixing bolt 72, an advancing cylinder 75 is mounted on the advancing cylinder bracket 71 through an advancing cylinder fixing bolt 74, the advancing cylinder 75 is horizontally arranged, and a cylinder rod of the advancing cylinder 75 penetrates through the advancing cylinder bracket 71 and is fixedly connected with an advancing cylinder rod fixing bracket 77 through an advancing cylinder rod fixing nut 69;

an advance position positioning bolt bracket 67 is fixedly arranged on the machine body 73 of the front air cylinder 75, the tail end of the cylinder rod of which extends to the side of the limit position, through an advance position positioning bolt bracket bolt 66, an advance position positioning bolt 68 is arranged on the advance position positioning bolt bracket 67, and the advance position positioning bolt 68 is used for stopping the advance cylinder rod fixing bracket 77 from carrying out limit position limiting of horizontal movement.

The top surface of the advancing cylinder rod fixing support 77 is fixedly provided with a bracket 91, the bracket 91 is vertically arranged, the middle part of the bottom surface of the bracket 91 is fixedly connected with the advancing cylinder rod fixing support 77 through an advancing cylinder rod fixing support fixing bolt 78, both sides of the bottom surface of the bracket 91 are symmetrically provided with slider guide rail assemblies, and the bracket 91 is driven by an advancing cylinder 75 to horizontally move downwards under the guidance of a horizontal sliding pair of the slider guide rail assemblies;

each slider rail assembly comprises a front slider 79, a rear slider 76, a front rail pad 103 and a rear rail pad 103, the front slider 79 and the rear slider 79 are fixed on the bottom surface of the bracket 91 through a front slider fixing bolt 80, the front slider 79 and the rear slider 79 are embedded on the front rail 76 and the rear rail 76 in a sliding manner, a horizontal sliding pair is formed between the front slider 79 and the front rail 76, the front rail 76 and the rear rail 76 are arranged along a cylinder rod parallel to the front cylinder 75, the front rail pad 76 and the rear rail pad 103 are fixed on the bed 73 through the front rail pad 103, and the front rail pad 103 and the rear rail pad 103 are fixed on the bed 73 through the front rail pad fixing bolt 102.

An upper cylinder support 92 and a lower cylinder support 92 are fixedly arranged on the top surface of the bracket 91 through upper and lower cylinder support fixing bolts 93, an upper cylinder 95 and a lower cylinder 95 are fixedly arranged on the upper and lower cylinder supports 92, cylinder rods of the upper and lower cylinders 95 downwards penetrate through the upper and lower cylinder supports 92 and then are fixedly connected with upper and lower cylinder rod supports 89 through upper and lower cylinder rod fixing bolts 88, and the upper and lower cylinder rod supports 89 are fixed on the side surface of the middle part of the first support through upper and lower cylinder rod support fixing bolts 87; the upper and lower guide rail sizing blocks 84 are fixedly arranged on the side surface of the bracket 91 through upper and lower guide rail sizing block fixing bolts 83, the upper and lower guide rail sizing blocks 84 are fixedly arranged with upper and lower guide rails 81 through upper and lower guide rail fixing bolts 82, the upper and lower guide rails 81 are arranged in parallel with the cylinder rods of the upper and lower cylinders 95, upper and lower sliding blocks 86 are slidably embedded on the upper and lower guide rails 81, the upper and lower guide rails 81 and the upper and lower sliding blocks 86 form an upper and lower sliding pair, and the upper and lower sliding blocks 86 are fixedly connected to the side surface of the middle part of the first bracket through upper and lower sliding block fixing bolts 85; the first bracket is driven by the cylinder rod of the upper and lower cylinders 95 to move up and down under the guide of the upper and lower guide rails 81 and the upper and lower sliding pairs in the shape of the upper and lower sliding blocks 86;

the lower bolt 36 is mounted at the bottom of the bracket 91 below the first bracket, and the lower bolt 36 is used for stopping the first bracket from limiting at a lower limit position of up-down lifting movement.

An upper limiting bolt support 94 is further mounted on the top surface of the bracket 91 on two sides of the upper and lower air cylinders 95, an upper bolt 96 is mounted on the upper limiting bolt support 94, and the upper bolt 96 is used for stopping the upper limiting position of the first support from moving up and down.

The first bracket is formed by fixedly splicing an L-shaped tool supporting plate 38 positioned at the middle lower part and a flat-plate-shaped pressing cylinder bracket 4 positioned at the upper part through a pressing cylinder bracket fixing bolt 5, the vertical part of the L-shaped tool supporting plate 38 is used as the middle part of the first bracket, the horizontal part of the L-shaped tool supporting plate 38 is used as the bottom of the first bracket, and the pressing cylinder bracket 4 is used as the top of the first bracket; a pressing cylinder support 4 at the top of the first support is provided with a pressing cylinder 1 through a cylinder fixing bolt 3, a piston rod 6 of the pressing cylinder 1 downwards penetrates through the pressing cylinder support 4 and then is fixedly connected with a pressing block 9, a through hole is formed in the pressing cylinder support 4 beside the pressing cylinder 1, a guide rod 2 is movably inserted in the through hole, the lower end of the guide rod 2 is fixedly connected with a guide rod support 8, the guide rod support 8 is fixedly connected with the pressing block 9 through a guide rod support fixing bolt 7, and the lower end of the pressing block 9 is fixedly connected with a brake caliper 11; the tool plate 35 is arranged on the tool support plate 38 at the bottom of the first support, the tool plate 35 is arranged on the tool support plate 38 through a tool plate compression bolt 98 in a horizontally movable and adjustable mode, vertical positioning pins 97 are symmetrically and fixedly arranged on two sides of the tool plate 35, and two side parts of the brake caliper 11 are fixed to the tops of the positioning pins 97; all offer the through hole on frock board 35 and the frock backup pad 38, behind the through hole of frock board 35 and frock backup pad 38 is passed to measuring stick 31 upper end and detect first 10 bottom fixed connection, detect first 10 from down upwards stretch into in brake caliper 11.

Big round holes are formed in two sides of the tool plate 35, the tool plate pressing bolt 98 penetrates through the big round hole of the tool plate 35 and then is in threaded connection with the tool supporting plate 38, as shown in fig. 5, a bolt flat gasket 99 can be arranged between the tool plate pressing bolt 98 and the tool plate 35, the diameter of the big round hole is larger than that of the tool plate pressing bolt 9, the tool plate 35 can be adjusted in a horizontal plane movement mode on the tool supporting plate 38, and the gap between the big round hole and the tool plate pressing bolt 9 is the adjusting gap.

The front and rear adjusting components and the left and right adjusting components are arranged on the tool supporting plate 38 beside two adjacent sides of the tool plate 35 and are arranged vertically.

As shown in fig. 5 and 6, the front-back adjusting assembly includes a tool adjusting bracket 32, a tool adjusting bracket fixing bolt 33, and a front-back adjusting bolt 34, the tool adjusting bracket 32 is fixed on a tool supporting plate 38 through the tool adjusting bracket fixing bolt 33, the tool adjusting bracket 32 is provided with a horizontal threaded hole, the front-back adjusting bolt 34 is installed in the horizontal threaded hole in a threaded manner, and the front-back adjusting bolt 34 passes through the horizontal threaded hole and then is connected to the side surface of the tool plate 35;

the left and right adjusting assembly comprises a tool left and right adjusting bolt support 100, a tool left and right adjusting bolt 101 and a tool left and right adjusting bolt support bolt, the tool left and right adjusting bolt support 100 is fixed on the tool support plate 38 through the tool left and right adjusting bolt support bolt, a horizontal threaded hole is formed in the tool left and right adjusting bolt support 100, the tool left and right adjusting bolt 101 is installed in the horizontal threaded hole in a threaded manner, and the tool left and right adjusting bolt 101 penetrates through the horizontal threaded hole and then is connected to the side face of the tool plate 35; the front and rear adjusting bolts 34 and the left and right tool adjusting bolts 101 are arranged vertically and connected to two vertical side surfaces of the tool plate 35, and the plane position of the tool plate 35 on the tool support plate 38 is adjusted by screwing or screwing the front and rear adjusting bolts 34 and the left and right tool adjusting bolts 101.

The measuring shaft driving mechanism is mainly composed of a plane thrust bearing 50, a transmission shaft 52, an angular contact bearing 53, a round nut 54, a gearwheel 55, a flat key 56, a locking nut 57, a pinion 63, a flat key 61, a motor bracket 64, a bracket fixing bolt 65 and the like, and the measuring shaft driving mechanism is provided with a plane bearing and an angular contact bearing which are combined to adjust axial and radial gaps; a stepping motor is used as power, and the big gear and the small gear are used for reducing speed.

The lower end of the measuring rod 31 is coaxially connected with the upper end of the transmission shaft 52 through the transmission pin 47, the transmission shaft 52 at the position of the transmission pin 47 is sleeved with the pin retaining ring 48 in an sleeved mode, and the lower end of the measuring rod 31 can be coaxially sleeved in a hole in the upper end of the transmission shaft 52.

The lower end of the transmission shaft 52 penetrates through the bed 73, a motor support 64 is mounted at the bottom of the bed 73, the motor support 64 is L-shaped, the motor support 64 is fixedly mounted on the bottom surface of the bed 73 through a motor support fixing bolt 65, a pinion fixing motor 59 is mounted on the motor support 64, the pinion fixing motor 59 is mounted on the motor support 64 through a motor bolt 58, an output shaft of the pinion fixing motor 59 penetrates through the motor support 64 and then is coaxially connected with a pinion 63 through a pinion bolt 61, a gasket 62 is mounted between the output shaft of the pinion fixing motor 59 and the pinion 63, the pinion 63 and the bull gear 55 are meshed to form a gear pair, the bull gear 55 penetrates through the lower end of the bed 73 through a first flat key 56 and the transmission shaft 52 and is coaxially sleeved and fixed through a gear locking nut 57, and round nuts 54 for axial spacing positioning are sleeved outside the transmission shaft 52 between the bull gear 55 and the bed 73; the transmission shaft 52 is hinged and penetrated through a through hole on the other side of the bed 73 through an angular contact bearing 53 and a plane thrust bearing 50; the drive shaft 52 is provided with an outer flange, and the lower step surface of the outer flange is connected to the top surface of the bed 73 via the flat thrust bearing 50. The plane bearing is used for axial support, and the angular contact bearing is used for adjusting the clearance to ensure radial and axial runout.

The pinion fixing motor 59 operates to drive the pinion 63 to rotate, and then drives the bull gear 55 to rotate through the gear pair, so as to drive the measuring rod 31 and the detecting head 10 thereon to rotate through the transmission shaft 52.

The whole detection head 10 rotates 360 degrees slowly along with the measuring rod 31 under the driving device. Therefore, the driving mechanism of the measuring shaft is a rotary power mechanism consisting of a bearing clearance adjusting mechanism, a big gear and a small gear for reducing speed and a small stepping motor.

As shown in fig. 1 and fig. 9, a gas distribution ring 44 is sleeved outside the measuring rod 31 on the transmission shaft 52, the gas distribution ring 44 is made of a non-conductive material, and the gas distribution ring 44 and the measuring rod 31 are connected in a sealing manner through a gas distribution ring sealing ring 45. One side of the outer side wall of the measuring rod 31 above the gas distribution ring 44 is fixed with an insulating bump, as shown in fig. 8, the insulating bump is fixed on the outer side wall of the measuring rod 31 through an insulating sleeve screw 37, the insulating bump rotates along with the measuring rod 31, the bottom surface of the insulating bump is fixedly provided with a sliding head of a first sliding head and a sliding head of a detecting line 41, the detecting line of the first sliding head and the detecting line 41 is pressed in the bump through a compression bolt 39 and a compression spring 40, in the concrete implementation, the compression bolt 39 is connected and installed through the compression spring 40 and the sliding head, one end of the detecting line of the first sliding head and the detecting line 41 is electrically connected with the sliding head, and the other end of the detecting line is electrically connected to the detecting head 10 at the top end of the measuring rod 31 through the surface of the measuring rod 31 or the internal wiring.

The gas distribution ring 44 is kept fixed, the top surface of the gas distribution ring 44 is provided with a slide head of a second slide head and a slide head of the detection wire 42, the slide head of the second slide head and the slide head of the detection wire 42 are matched with the slide head of the first slide head and the slide head of the detection wire 41 to form a slip ring, and the slide heads of the second slide head and the detection wire 42 are connected to an external signal receiving circuit through the second slide head and the detection wire of the detection wire 42 arranged by penetrating the gas distribution ring 44; the measuring rod 31 rotates to drive the bump and the detecting head 10 to rotate synchronously, the second sliding head and the detecting line 42 are in electrical contact with the sliding head of the first sliding head and the detecting line 41 all the time during rotation, and the detecting electric signal of the detecting head 10 is led out to the outside through the second sliding head and the detecting line 42 and the slip ring and the first sliding head and the detecting line 41.

A gas distribution ring adjusting ring 46 is arranged between the gas distribution ring 44 and the upper end surface of the transmission shaft 52, and the gas distribution ring adjusting ring 46 is used for adjusting the gap between the gas distribution ring 44 and the rotating part of the measuring rod 31; thus, the measuring rod 31 has a pin escape prevention sliding sleeve and an adjusting gas distribution ring adjusting ring 46.

An air channel is arranged inside the measuring rod 31 at the position of the air distribution ring 44, the air channel is arranged along the vertical axial direction of the measuring rod 31, the side wall of the measuring rod 31 above the air distribution ring 44 is provided with a measuring rod air pipe opening, the inner end of the measuring rod air pipe opening is communicated with the upper part of the air channel, meanwhile, the outer end of the measuring rod air pipe opening is connected to an air inlet hole of the detecting head 10 through a pipeline with synchronous rotation of the measuring rod 31,

the outer side of the gas distribution ring 44 is provided with a gas pipe joint 43, the gas pipe joint 43 is connected with a gas source, the outer circumferential surface of the measuring rod 31 where the gas pipe joint 43 is located is provided with an annular gas groove, the gas pipe joint 43 is communicated with the annular gas groove through a radial channel inside the gas distribution ring 44, the annular gas groove is communicated with a gas flow channel through a radial through hole, and the gas pipe joint 43 downwards penetrates out of the lower end surface of the measuring rod 31 and is provided with a screw plug 49 for plugging.

The air pipe connector 43 inputs air from an air source and then flows into the air flow channel, the air flow channel flows to the air inlet of the detection head 10 through the air pipe opening of the measuring rod, then the air inlet of the detection head 10 is controlled, the stretching of the measuring head 12 in the detection head 10 is controlled, and then the detection head 10 can be detached and taken down.

The measuring head of the measuring head 10 can be pneumatically expanded and contracted, and the spring returns to the position which is not separated from other piston mechanisms. The measuring head can be adjusted and can retract when meeting a resistance so as to adapt to measurement of similar sizes, and meanwhile, the adjustment is not divided into locking. And the measuring head can be retracted back through the spring when meeting resistance (detection object) during detection, so that the functions of preventing needle striking and needle breaking are achieved to a certain extent.

The measuring rod has a dynamic and static air conversion function and is combined with the gas distribution ring. The detection rod is provided with a gas distribution ring, so that static gas can be changed into dynamic gas, and static electric signals can be changed into dynamic signals. When the measuring rod rotates, the air distribution ring does not rotate. The measuring rod can convert static gas into dynamic gas and can rotate along with the measuring head, in addition, the electric signal is converted into dynamic state statically, enters the measuring head, and the signal communication is ensured when the measuring head rotates for 360 degrees.

The top surface of the transmission shaft 52 is provided with a blind hole, a positioning spring 51 is arranged in the blind hole, and the upper end of the positioning spring 51 is connected to the bottom surface of the measuring rod 31, so that the gravity of the measuring rod 31 and the measuring head 10 thereof is eliminated, and the stability is enhanced.

The anti-rotation fork 104 is mounted on the bed 73, and the air pipe joint 43 is fitted in a notch at the upper end of the anti-rotation fork 104. The rotation preventing fork 104 is used for preventing the air distribution ring 44 from rotating along with the measuring rod 31 by preventing the air pipe joint 43 from rotating in operation, so that a static air source is changed into a rotatable air source, and the control of the side piston in the rotating process of the measuring rod is realized. In addition, because the slip ring and the detection wire 42 are arranged in the gas distribution ring, a static electric signal is converted into a dynamic signal which is transmitted to the inside of the measuring head, and the detection function is realized.

The measuring rod 31 is separated from the transmission mechanism, is provided with the pin retaining ring and the supporting spring, is convenient and simple to change specifications, can be changed, and is provided with the supporting gap eliminating spring.

As shown in fig. 7, the embodied test head 10 includes a test head 12, a piston 13, a test head spring 14, a test head hold-down spring 15, a test head adjusting rod 16, a piston adjusting ring 17, a test head adjusting nut 18, a test head locknut 19, a piston locknut 23, a piston body fixing nut 24, a piston adjusting nut 25, a piston body 26, a piston spring 27 and a piston housing 28; in fig. 7, the left side is the head side, the right side is the tail side, and the piston housing 28, the piston body 26 and the piston 13 are coaxially arranged and are sequentially sleeved from outside to inside. The piston housing 28 is in locating engagement with the piston body 26 and is secured therein.

A mounting channel is arranged in the piston shell 28, a piston body 26 is arranged in the head part of the mounting channel, a piston body fixing nut 24 is arranged in the tail part of the mounting channel, the piston body fixing nut 24 is tightly installed in a threaded hole in the tail part of the mounting channel through threads, and the head end surface of the piston body fixing nut 24 is connected to the tail end surface of the piston body 26 to tightly press the piston body 26 on the step surface of the head part of the mounting channel; a piston body sealing ring 29 is arranged between the piston body 26 and the inner wall of the installation channel for sealing connection, and the piston body sealing ring 29 is used for sealing gas entering the piston; the piston body 26 is hollow and is provided with a piston 13, a piston sealing ring 30 is arranged between the piston 13 and the inner wall of the piston body 26 for sealing connection, and the piston sealing ring 30 plays a sealing role when the piston moves left and right. An inner flange is arranged on the inner peripheral surface of the head of the piston body 26, an outer flange is arranged on the outer peripheral surface of the piston 13 close to the head in the piston body 26, the outer diameter of the outer flange of the piston 13 is larger than the inner diameter of the inner flange of the piston body 26, the outer flange of the piston 13 is tightly pressed and connected to the inner flange of the piston body 26, and the step surface of the head end of the outer flange of the piston 13 is tightly pressed and connected with the step surface of the tail end of the inner flange of the piston body 26; piston seal rings 30 are arranged between the outer wall of the piston 13 and the inner wall of the inner flange of the piston body 26 and between the outer wall of the outer flange of the piston 13 and the inner wall of the piston body 26 for sealing connection; a piston adjusting nut 25 is sleeved between the tail of the piston 13 and the tail of the piston body 26, the piston adjusting nut 25 is screwed and installed in a threaded hole at the tail of the piston body 26 through threads, a piston locknut 23 is screwed and installed in a central threaded hole of a piston body fixing nut 24 through threads, and the head end face of the piston locknut 23 is connected to the tail end face of the piston adjusting nut 25 so as to tightly press the piston adjusting nut 25 on a step face arranged on the inner wall at the tail of the piston body 26; the piston body fixing nut 24 fixes the piston body 26 to the inner position of the piston housing 28, and the piston locknut 23 is used for the locking function of the piston adjusting nut 25.

A piston spring 27 and a piston adjusting ring 17 are arranged in an annular gap between a piston body 26 positioned between the piston adjusting nut 25 and the outer flange of the piston 13 and the piston 13, the piston adjusting ring 17 is connected to the end surface of the head of the piston adjusting nut 25 in a contact manner, the piston spring 27 is sleeved outside the piston 13, and two ends of the piston spring 27 are respectively connected with the outer flange of the piston 13 and the piston adjusting ring 17; the tail part of the piston 13 is movably sleeved in a central hole of the piston adjusting nut 25, and the tail part of the piston 13 is in clearance fit with the piston adjusting nut 25; the piston spring 27 is a working spring which presses the piston 13 into the extreme working position of the head end.

A cavity is arranged in the piston 13, a measuring head 12, a measuring head adjusting rod 16, a measuring head adjusting nut 18 and a measuring head locknut 19 are sequentially arranged in the cavity from the head to the tail of the piston 13, a piston sealing ring 30 is arranged between the piston 13 and the inner wall of the piston body 26 for sealing connection, an inner flange is arranged on the inner peripheral surface of the head of the piston 13, an outer flange is arranged on the outer peripheral surface of the tail end of a measuring head 12 in a piston 13, the outer diameter of the outer flange of the measuring head 12 is larger than the inner diameter of the inner flange of the piston 13, a measuring head spring 14 is sleeved outside the measuring head 12 in the piston 13, the head end step surface of the outer flange of the measuring head 12 is connected with the inner flange tail end step surface of the piston 13 through the measuring head spring 14, the tail end surface of the outer flange of the measuring head 12 is connected with the head end surface of a measuring head adjusting rod 16 through a measuring head pressing spring 15, the measuring head pressing spring 15 is connected between the measuring head 12 and the measuring head adjusting rod 16, and the tail end surface of the measuring head adjusting rod 16 is connected with the head end surface of a measuring head adjusting nut 18 in a pressing mode;

the measuring head adjusting nut 18 is screwed and installed in a threaded hole in the tail of the piston 13 through threads, the measuring head locknut 19 is screwed and installed in a central threaded hole of the piston 13 through threads, and the head end face of the measuring head locknut 19 is connected to the tail end face of the measuring head adjusting nut 18 so as to limit the measuring head adjusting nut 18 in the piston 13; a step surface is arranged at the position, close to the tail, of the piston 13 and used for axial limiting movement of the measuring head adjusting nut 18; the measuring head locknut 19 is provided with an energizing spring 21, the energizing spring 21 is arranged in a hole formed in the end face of the measuring head locknut 19 through a wire fixing bolt 22, and the energizing spring 21 is used for leading out an electric signal of the measuring head. The energizing spring 21 plays a role in transferring electric signals, and the electric wire fixing bolt 22 fastens the signal wire to the anti-loosening bolt, so that the signal wire is not loosened and does not fall off, and good signals are ensured.

The measuring head 12, the measuring head compression spring 15, the measuring head adjusting rod 16 and the measuring head adjusting nut 18 are all metal pieces and are electrically connected in sequence, the head end of the measuring head 12 extends out of the piston 13 and then is used for electrically contacting scrap iron in the sealing groove, the measuring head adjusting nut 18 is electrically connected with the electrifying spring 21, the electrifying spring 21 is electrically connected with the detection line of the first sliding head and the detection line 41 through the signal line 106, and then the signal of the scrap iron in the sealing groove is electrically contacted with the measuring head 12 to be led out and detected.

The measuring head 12 of the present invention is insulated from other parts and is not conducted, and is conducted with the energizing spring 21 only after passing through the measuring head hold-down spring 15, the measuring head adjusting rod 16 and the measuring head adjusting nut 18 in sequence. The signal line 106 is a copper wire having an outer insulating rubber diameter of about 0.5, and is connected to an electrical system to provide signal control.

The electrified spring 21 arranged in the wire fixing bolt ensures the conduction with the measuring head and can compress the wire.

The gauge head check nut 19 is provided with a gauge head check screw 20. The measuring head check nut 19 and the side head adjusting bolt 18 can be prevented from loosening under the action of friction force, the measuring head check screw 20 is screwed into the check nut 19 for further preventing the check nut 19 from loosening, and when the check screw 20 contacts the end face of the side head adjusting bolt 18, the measuring head adjusting bolt 18 and the check bolt 19 are pushed to opposite directions by axial force generated by the check screw 20, so that double safety function is achieved.

The measuring head locknut 19 is a nonconductor fine-tooth thread bolt, and 4 evenly distributed thread small holes are arranged at the tail end and used for locking and fixing the electric wire.

Therefore, the measuring head 12 disclosed by the utility model is anti-loose, and is provided with an anti-loose screw to increase the axial force locking besides the two-bolt friction locking.

In the specific implementation, a through hole is formed in the outer side wall of the piston shell 28 outside the middle of the piston body 26, the through hole is communicated with the installation channel, a fastening screw 105 is installed in the through hole, and the fastening screw 105 penetrates through the through hole and then is tightly pressed and connected to the outer wall of the piston body 26 to axially tightly press and fix the piston body 26.

As shown in fig. 10 and 11, an air inlet hole is formed in the outer side wall of the piston housing 28 outside the step surface of the inner flange of the piston body 26, the air inlet hole is communicated with the air pipe opening of the measuring rod 31 through an air pipe 107, an annular groove is formed in the outer side wall of the piston body 26 at the step surface of the inner flange of the piston body 26, a plurality of through air channels are formed in the annular groove at intervals along the circumference, the through air channels are communicated with the gap between the inner flange of the piston body 26 and the outer flange of the piston 13, the gap is communicated with the annular groove through the air channels, and the annular groove is communicated with the air pipe opening of the measuring rod 31 through the air inlet hole. The piston body seal ring 29 and the piston seal ring 30 are respectively arranged on both sides of the air inlet hole. The air channel of the annular groove is a three-way small hole and is communicated with the air inlet hole, so that the air inlet is ensured to be uniform.

The air pipe opening of the measuring rod 31 is inflated into the annular groove and is inflated into the gap between the inner flange of the piston body 26 and the outer flange of the piston 13 through the air channel, so that the piston 13 moves towards one end far away from the piston 13, the piston 13 is driven to retract, and the iron scrap detecting head is taken out from the sealing groove.

When the air pipe opening of the measuring rod 31 is inflated, the measuring head 12 is retracted into the piston 13, and the scrap iron detecting head is taken out of the sealing groove; when the air pipe opening of the measuring rod 31 is not inflated, the measuring head 12 extends out of the piston 13 to detect the iron chips in the sealing groove.

In a specific embodiment, the piston body seal ring 29 and the piston seal ring 30 are both O-ring seals.

The piston 13 is non-conductive. The diameters of piston shafts at two ends of the piston are different. The center of the piston is provided with a hole.

The measuring head 12 mainly detects whether the sealing groove of the caliper body has scrap iron, is arranged on a wear-resistant conical head in the piston and can move in a telescopic mode. The gauge head force of the gauge head 12 is adjusted by using both the gauge head spring 14 and the gauge head hold-down spring 15 in cooperation. When the measuring head 12 meets resistance, the measuring head 12 is driven to retract, and needle breakage, head breakage and breakage of the measuring head 12 are prevented.

The stylus adjustment lever 16 is used to fine tune the measurement of the stylus 12 and the adjustment of the amount of retraction force, and can be lengthened or shortened as desired. In particular to a T-shaped circular polish rod, and the size can be modified when the measuring head is adjusted.

The measuring head adjusting nut 18 is used for finely adjusting the extending length of the measuring head 12, and the measuring head adjusting nut 18 is screwed into the head of the piston 13 more, so that the measuring head 12 extends out of the piston 13 for more length.

The piston adjusting ring 17 is used to adjust the retraction distance of the piston 13 (here, the retraction amount is designed to be 10 mm MAX), and can be lengthened or shortened. The piston adjusting nut 25 adjusts the retraction stroke and the air pressure of the piston 13.

The above components of the present invention are installed in the piston body 26, except for the piston body fixing nut 24 and the piston locknut 23, and then are installed in the piston housing 28. The piston body fixing bolt 24 is a bolt having fine threads inside and outside.

The utility model has a conductor measuring head part and a non-conductor engineering plastic piston part, which can move mutually after being stressed, and both are arranged in the non-conductor piston, and are in insulation disconnection with other piston bodies and a piston shell.

The conductor measuring head part comprises a measuring head, a measuring head spring, a measuring head compression spring, an adjusting rod, an adjusting bolt, a check bolt, a power-on spring and a signal line fixing bolt.

The non-conductor engineering plastic piston part comprises a piston 13 and a measuring head loosening bolt 19.

The locknut is made of non-conductor plastics to prevent conduction. The middle of the utility model is provided with a power-on spring to ensure that the signal wire can be screwed down and can be conducted with the detection head. In addition, the non-conductor piston can move left and right on the piston body due to the fact that the piston adjusting bolt and the piston check bolt are provided with gaps of 0.1-0.15mm, a boss is arranged at the front part of the piston, a gap of 0.2-0.3 mm is formed between the front part of the piston and the piston body, and the gaps are communicated with the air inlet holes.

The product moving and clamping mechanism of the utility model is a mechanism which is provided with a cylinder, a linear guide rail, a position-adjustable tooling plate and the like, can move in sequence, can change the production, is flexible and can adjust the center.

The product clamping and moving mechanism mainly comprises a product pressing mechanism, an up-down moving mechanism and a left-right moving mechanism. Wherein the pressing cylinder 1, the guide rod 2, the guide rod bracket 8 and the pressing block 9 form a product pressing mechanism. The upper and lower cylinders 95, the upper and lower cylinder brackets 92, the upper and lower limit bolt brackets 94 of the tooling plate, the upper and lower guide rails 81, the slide block 86, the upper and lower guide rail cushion blocks 84, the upper-lower cylinder rod brackets 89, the upper limit bolt 96, the lower limit bolt 36, the tooling support plate 38, the tooling plate 35, the positioning pin 97, the tooling plate hold-down bolt 98 and other main components constitute a product up-down moving mechanism. And the main components of the forward cylinder 75, the forward cylinder bracket 74, the front and rear guide rails 76, the front and rear guide rail sizing blocks 103, the front and rear cylinder rod fixing brackets 77, the cylinder rod bracket fixing bolts 78, the front and rear sliders 79, the bracket 91, the front and rear position positioning bolt brackets 67, the forward position positioning bolts 68 and the like constitute a forward and rear movement mechanism of the product. The product clamping and moving mechanism is provided with a left-right direction linear rail for guiding and positioning, and is pneumatically pushed and positioned by a positioning bolt, so that the product clamping and moving mechanism can be adjusted; the linear rail is guided and positioned in the up-and-down direction, and is positioned by air pushing and a positioning bolt, so that the up-and-down direction can be adjusted; the pressing block is guided by a guide rod to prevent the pressure deviation in movement; the tooling plate can be provided with a front and back adjusting assembly and a left and right adjusting assembly for central adjustment, and is replaceable, easy to center the measuring head, combined with a distance adjusting bolt, and convenient for new product replacement and adjustment.

The measuring rod figure 1 is composed of a plurality of parts, the measuring rod 31 is a main body, an insulating sleeve is fixed on the measuring rod 31 through an insulating sleeve screw 37, a compression bolt 39 is arranged inside the insulating sleeve and used for pressing a compression spring 40, the compression spring presses a first sliding head and a detection line 41 (the first sliding head and the detection line are welded together), and the sliding head is made into a hemispherical shape, so that friction force is reduced. The slip ring of the second slider and the sensing wire 42 is an iron ring adhered to the top surface of the gas distribution ring 44, and the sensing wire of the second slider and the sensing wire 42 is welded to the slip ring of the second slider and the sensing wire 42.

The air distribution ring 44 is used for converting static air into dynamic air, a sealing ring 45 in the air distribution ring plays a role in sealing in the rotation process of the measuring rod, the air pipe joint 43 is an air inlet, and the air pipe joint and an anti-rotation fork 104 (shown in figure 2) play a role in preventing the air distribution ring 44 from rotating, so that compressed air enters the air pipe joint 3 on the measuring rod through an inner through hole and is connected with the air pipe 3 below the measuring head, so that the air can enter the left end of the piston 13 to realize the rightward movement of the piston 13, and the measuring head 12 is driven to retract.

In addition, because the slip ring is pasted on the gas distribution ring 44, similarly, the slip ring can change a static electric signal into a dynamic electric signal, so that the signals at the second slip head and the detection line 42 can be transmitted to the first slip head and the detection line 41, and the detection line of the second slip head and the detection line 42 is connected with the detection line 3 below the measuring head, thereby realizing the connection of the detection signals and the control system and realizing automatic control. The adjusting ring 46 is used for supporting the gas distribution ring 44 and adjusting the gap of the slip ring to be 0.15-0.25mm, and the screw plug 49 is a plug of the process air hole. The driving pin 47 is a pin shaft connecting the measuring rod 31 and the transmission shaft 52, and connects the measuring rod 31 and the transmission shaft 52 to transmit the force from the transmission shaft 52 to the measuring rod 31 so as to realize 360-degree rotation of the measuring head. The pin retaining ring 48 is a sliding sleeve that can move up and down and prevent the driving pin 47 from escaping.

If a new measuring rod is replaced, the sliding sleeve is moved upwards to expose the transmission pin, the pin shaft is pressed out, and then the measuring rod can be pulled out from the transmission shaft 52, so that replacement of different specifications is realized. The positioning spring 51 is used to eliminate the gap at the driving pin 47 and to support the measuring rod 31 to ensure that the position of the measuring head is not changed by gravity.

As can be seen from fig. 1, the product clamping and moving mechanism is characterized in that a product clamp body 11 to be detected is mounted on a positioning pin 97 (see fig. 2) on the tooling plate 35, and positioning in the directions of the degrees of freedom of the product, such as front and back, left and right, up and down, rotation, and the like, is completed by using the 2-pin positioning principle. When air is fed above the upper pressure cylinder 1, the piston rod 6 of the pressing cylinder extends out to drive the pressing block 9 to press the product downwards, so that the product is prevented from moving in the detection process. Wherein the guide rod 2 prevents the briquetting from rotating, plays a role in guiding and preventing the pressure deviation (some calipers do not need to be because the lower side of the cylinder body is planar), and the guide rod is fixed on the briquetting by a bolt 7 through a guide rod bracket 8. The tool plate 35 is fixed on the tool support plate 38 through 2 tool plate compression bolts 98 (see figure 2), and the side surface of the tool plate is provided with a front and rear adjusting bolt 34, a left and right adjusting bolt 101 (see figure 2) and a locking nut thereof, which can carry out micro-adjustment on a product so as to ensure the coaxiality of a measuring head and a measuring rod to the center; the adjustment bolts are mounted on tooling adjustment brackets 32 and 100 (see fig. 2) which are in turn secured to tooling support plate 38 by fixing bolts 33. The tool supporting plate is used for supporting the tool plate 35, the product 11 and the pressing cylinder 1 and driving the tool plate, the product and the pressing cylinder 1 to move up and down together; the tool support plate 38 is fixed to the upper and lower sliders 86 by upper and lower slider fixing bolts 85, and the sliders are mounted on the upper and lower guide rails 81. The up-down rail 81 is fixed to the up-down rail back iron 84 by fixing bolts 82, and the up-down rail back iron 84 is fixed to the bracket 91 by fixing bolts 83. In addition, the tool support plate 35 is connected with the upper and lower cylinder rods 90 by the upper and lower cylinder rod brackets 89 through the bracket bolts 87 and the cylinder rod fixing bolts 88; the up-down cylinder 95 is fixed to the bracket 91 by bolts 93 through the up-down cylinder support 92. Thus, the cylinder 95 is ventilated up and down, and the workpiece and the like are driven to move up and down. Because the upper pressure cylinder 1 is fixed on the bracket 4 through the bolt 3, the bracket 4 is fixed on the tool supporting plate through the bolt 5. Thus, as the product moves, the hold-down cylinder moves with the product. The up-and-down movement distance of the tool supporting plate 35 is adjusted according to the length and the size of the measuring head and the opening width of the product, and the depth of the cylinder hole is adjusted to ensure that the measuring head can conveniently enter and exit the cylinder hole. This distance is ensured by the upper and lower two-piece tooling support plate adjusting bolts 96 and 36 and their locking nuts, the upper bolt 96 being secured to the upper limit bolt bracket 94 which is in turn secured to the upper and lower cylinder brackets 92 by the fixing bolt, which is secured to the bracket 91 by the fixing bolt 93, and the lower bolt 36 being secured directly to the bracket 91. The bracket 91 is used for driving the tool supporting plate and the product to move back and forth; the bracket 91 is fixed on the front and rear slide blocks 79 through slide block bolts 80, the slide blocks 79 are installed on the front and rear guide rails 76, the guide rails are installed on front and rear guide rail sizing blocks 103 (see fig. 2) through bolts, the guide rail sizing blocks are fixed on the bed body 73 through fixing bolts 102 (see fig. 2), in addition, the bracket 91 is connected with the advancing cylinder rod 70 through an advancing cylinder rod fixing support 77 and a fixing nut 69, so that the left and right ventilation of the cylinder can realize that the bracket drives a product to move back and forth. The advance cylinder 75 is fixed to the bed 73 by a fixing bolt 72 through its bracket 71.

The power mechanism figure 1 of the measuring head rotation is composed of 15 parts, a plane thrust bearing 50 plays a supporting role and bears axial force, an angular contact bearing 53 is used for radial supporting and plays a role in positioning, a round nut 54 is used for screwing the contact bearing, and axial clearance is adjusted. The gear lock nut 57 fixes the large gear on the transmission shaft 52, the large gear 55 transmits the force of the small gear 63 to the transmission shaft 52 through the first flat key 56, the small gear bolt 61 and the gasket 62 fix the small gear on the shaft of the motor 59, and the power of the motor is transmitted to the small gear through the second flat key 60. The motor bolts 58 secure the motor to the motor bracket 64, which in turn is secured to the bed 73 by bracket bolts 65.

Description of the principle of the working sequence: (as seen from fig. 1 and 7), when the product calipers are tightly pressed, a signal is sent, compressed air enters from the air pipe joint 43, enters the left side of the piston 13 from the air pipe 3 through the rotary mechanism, the piston moves rightwards to drive the measuring head to retract, after the measuring head retracts, the advancing air cylinder 75 enters air at the left end, the piston rod 70 extends out to push the bracket and the product to move rightwards, after the piston rod is in place, the upper ends of the upper air cylinder 95 and the lower air cylinder 95 enter air, the piston rod 90 extends out to push the tool supporting plate and the product to move downwards, after the piston rod is in place, the air source of the air pipe joint 43 is disconnected, the piston 13 moves leftwards under the action of the elastic force of the piston spring 27, the measuring head 12 extends out, at the moment, the control system energizes the signal wire and the motor, the motor starts to rotate, if the measuring head detects the existence of iron chips, the alarm stops running, if the iron chips are not detected, the motor rotates for one circle, then the air pipe joint 43 starts to ventilate again, the measuring head 12 retracts, then the lower ends of the upper air cylinder and the lower air cylinder 95 are ventilated, the piston rod 90 retracts, the product rises to the right, after the product is in place, the right end of the advancing air cylinder 75 admits air, the piston rod retracts, the product moves to the left, after the product moves to the left, the lower end of the pressing air cylinder 1 admits air, the piston rod moves upwards to drive the pressing block 9 to move upwards, and the product is loosened. A flow is completed.

As shown in FIG. 12, the present invention is applied to the detection of iron filings in the sealing groove of the washed forceps body. After the pliers body is washed by water and the like, fine iron filings are very easy to wash away and cannot be left in the sealing groove of the pliers body, and the iron filings with the size close to the width of the sealing groove can be clamped in the sealing groove and cannot be washed away.

The sealing groove of the forceps body is a groove which is arranged inwards in the forceps body.

During measurement, a measuring head 12 of the scrap iron detecting head extends out of a piston 13 and then extends into a sealing groove of the washed clamp body, and the scrap iron detecting head moves once along the arrangement direction of the sealing groove, so that scrap iron in the sealing groove can be detected. If the sealing groove is annular, the sealing groove moves for a circle along the annular circumference of the sealing groove.

In the real-time movement process of the measuring head 12 along the clamp body sealing groove, if the measuring head 12 contacts iron filings, the potential/level of the measuring head 12 changes, an electric signal led out by the power-on spring 21 through the signal line 106 changes, and then the change of the electric signal led out by the power-on spring 21 can be detected to detect whether the iron filings exist and the position of the iron filings existing in the clamp body sealing groove.

The measuring head 12 can detect and obtain the positions of the sealing groove where the scrap iron is left after moving once along the arrangement direction of the sealing groove.

The working principle of the detection head 10 of the present invention is:

as can be seen in fig. 7, the probe 12 is separated from the other parts by the insulating member, is not in communication with the other parts, and is only in communication with the intermediate energizing spring. When the electric wire is electrified, the signal electricity can be transmitted to the head measuring part and is not conducted with other parts.

As can be seen in figure 12, because the gap is formed between the measuring head and the wall of the product groove, the gap is the thickness of the material scraps to be detected, when the material scraps exist, the measuring head can touch the material scraps, the potential of the measuring head 12 can change to form a passage, and therefore the material scraps can be detected and can be stopped to alarm immediately.

Other embodiments of the present invention than the preferred embodiments described above, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, should fall within the scope of the present invention defined in the claims.

Claims

1. The utility model provides a pincers body seal groove iron fillings detection device which characterized in that:

the device comprises a lathe bed (73), a pinion fixing motor (59), a pinion (63), a large gear (55), a transmission shaft (52), an advancing cylinder (75), a bracket (91), a slide block guide rail assembly, an upper cylinder (95), a lower cylinder (95), a first support, a pressing cylinder (1), a pressing block (9), a tooling plate (35), a tooling supporting plate (38) and a measuring rod (31); an advancing cylinder bracket (71) is fixedly installed on one side of the lathe bed (73), an advancing cylinder (75) is installed on the advancing cylinder bracket (71), the advancing cylinder (75) is horizontally arranged, and a cylinder rod of the advancing cylinder (75) penetrates through the advancing cylinder bracket (71) and then is fixedly connected with an advancing cylinder rod fixing bracket (77); the top surface of the advancing cylinder rod fixing support (77) is fixedly provided with a bracket (91), the bracket (91) is vertically arranged, the middle part of the bottom surface of the bracket (91) is fixedly connected with the advancing cylinder rod fixing support (77), both sides of the bottom surface of the bracket (91) are symmetrically provided with a slide block guide rail assembly, and the bracket (91) is driven by an advancing cylinder (75) to horizontally move under the guide of a horizontal sliding pair of the slide block guide rail assembly;

an upper cylinder support (92) and a lower cylinder support (92) are fixedly arranged on the top surface of the bracket (91), an upper cylinder (95) and a lower cylinder (95) are fixedly arranged on the upper cylinder support (92), cylinder rods of the upper cylinder (95) and the lower cylinder (89) penetrate through the upper cylinder support (92) and the lower cylinder support (92) downwards and then are fixedly connected with the upper cylinder rod support (89), and the upper cylinder rod support (89) and the lower cylinder rod support (89) are fixed on the side surface of the middle part of the first support; an upper guide rail sizing block and a lower guide rail sizing block (84) are fixedly installed on the side face of the bracket (91), an upper guide rail and a lower guide rail (81) are fixedly installed on the upper guide rail sizing block and the lower guide rail (84), the upper guide rail and the lower guide rail (81) are arranged in parallel to the cylinder rods of the upper cylinder and the lower cylinder (95), an upper sliding block and a lower sliding block (86) are slidably embedded on the upper guide rail and the lower guide rail (81), an upper sliding pair and a lower sliding pair are formed by the upper guide rail and the lower sliding block (86), and the upper sliding block and the lower sliding block (86) are fixedly connected to the side face of the middle part of the first bracket; the first bracket is driven by a cylinder rod of an upper cylinder (95) and a lower cylinder (95) to move up and down under the guidance of an upper guide rail (81) and a lower guide rail (86) shaped upper and lower sliding pair;

the first support is formed by fixedly splicing an L-shaped tool supporting plate (38) positioned at the middle lower part and a flat pressing cylinder support (4) positioned at the upper part; a pressing cylinder (1) is installed on a pressing cylinder support (4) at the top of the first support, a piston rod (6) of the pressing cylinder (1) penetrates through the pressing cylinder support (4) downwards and then is fixedly connected with a pressing block (9), a through hole is formed in the pressing cylinder support (4) beside the pressing cylinder (1), a guide rod (2) is movably inserted into the through hole, the lower end of the guide rod (2) is fixedly connected with a guide rod support (8), the guide rod support (8) is fixedly connected with the pressing block (9), and the lower end of the pressing block (9) is fixedly connected with a brake caliper (11); a tooling plate (35) is mounted on a tooling support plate (38) at the bottom of the first support, the tooling plate (35) is mounted on the tooling support plate (38) through a tooling plate compression bolt (98) in a horizontally movable and adjustable manner, vertical positioning pins (97) are symmetrically and fixedly mounted on two sides of the tooling plate (35), and two side parts of the brake caliper (11) are fixed on the tops of the positioning pins (97); through holes are formed in the tool plate (35) and the tool supporting plate (38), the upper end of the measuring rod (31) penetrates through the through holes of the tool plate (35) and the tool supporting plate (38) and then is fixedly connected with the bottom of the detecting head (10), and the detecting head (10) extends into the brake caliper (11) from bottom to top;

a front-back adjusting assembly and a left-right adjusting assembly are arranged on the tool supporting plate (38) beside two adjacent sides of the tool plate (35), and are arranged vertically; the lower end of the measuring rod (31) is coaxially connected with the upper end of the transmission shaft (52) through a transmission pin (47); the lower end of a transmission shaft (52) penetrates through a machine body (73), a motor support (64) is installed at the bottom of the machine body (73), a pinion fixing motor (59) is installed on the motor support (64), an output shaft of the pinion fixing motor (59) is coaxially connected with a pinion (63) through a pinion bolt (61), the pinion (63) is meshed with a gearwheel (55) to form a gearwheel pair, and the gearwheel (55) is coaxially sleeved with the lower end of the transmission shaft (52) through a first flat key (56) and is axially fixed through a gearwheel locking nut (57); the pinion fixing motor (59) operates to drive the pinion (63) to rotate, the gear pair drives the bull gear (55) to rotate, and the transmission shaft (52) drives the measuring rod (31) and the detection head (10) thereon to rotate.

2. The scrap iron detecting device for the clamp body sealing groove according to claim 1, characterized in that:

each slide block guide rail component comprises a front slide block (79), a rear slide block (76) and a front guide rail sizing block (103), the front slide block and the rear slide block (79) are fixed on the bottom surface of the bracket (91), the front slide block and the rear slide block (79) are embedded on the front guide rail and the rear guide rail (76) in a sliding mode, a horizontal sliding pair is formed between the front slide block and the rear slide block (79) and the front guide rail and the rear guide rail (76), the front guide rail and the rear guide rail (76) are arranged along a cylinder rod parallel to the advancing cylinder (75), and the front guide rail and the rear guide rail (76) are fixed on the bed body (73) through the front guide rail sizing block and the rear guide rail sizing block (103).

3. The scrap iron detecting device for the clamp body sealing groove according to claim 1, characterized in that:

the measuring rod (31) on the transmission shaft (52) is sleeved with a gas distribution ring (44), an insulating bump is fixed on one side of the outer side wall of the measuring rod (31) above the gas distribution ring (44), the insulating bump rotates along with the measuring rod (31), a sliding head of a first sliding head and a detecting line (41) is installed on the bottom surface of the insulating bump, the detecting line of the first sliding head and the detecting line (41) is pressed in a convex block through a pressing bolt (39) and a pressing spring (40), one end of the detecting line of the first sliding head and the detecting line (41) is electrically connected with the sliding head, and the other end of the detecting line is electrically connected with the detecting head (10) at the top end of the measuring rod (31) through the surface or the inner routing of the measuring rod (31).

4. The scrap iron detecting device for the clamp body sealing groove according to claim 1, characterized in that:

an air channel is arranged inside the measuring rod (31) at the position of the air distribution ring (44), the side wall of the measuring rod (31) above the air distribution ring (44) is provided with a measuring rod air pipe opening, the inner end of the measuring rod air pipe opening is communicated with the air channel, the outer end of the measuring rod air pipe opening is connected to an air inlet hole of the detecting head (10) through a pipeline with synchronous rotation of the measuring rod (31) to be communicated,

the outer side of the gas distribution ring (44) is provided with a gas pipe connector (43), the outer circumferential surface of the measuring rod (31) where the gas pipe connector (43) is located is provided with an annular gas groove, the gas pipe connector (43) is communicated with the annular gas groove through a radial channel inside the gas distribution ring (44), and the annular gas groove is communicated with a gas flow channel through a radial through hole.

5. The scrap iron detecting device for the clamp body sealing groove according to claim 1, characterized in that:

the top surface of the transmission shaft (52) is provided with a blind hole, a positioning spring (51) is installed in the blind hole, and the upper end of the positioning spring (51) is connected to the bottom surface of the measuring rod (31).

6. The scrap iron detecting device for the clamp body sealing groove according to claim 1, characterized in that:

the anti-rotation fork (104) is arranged on the lathe bed (73), and the air pipe joint (43) is embedded in a notch at the upper end of the anti-rotation fork (104).

7. The scrap iron detecting device for the clamp body sealing groove according to claim 1, characterized in that:

the front-back adjusting assembly comprises a tool adjusting support (32), a tool adjusting support fixing bolt (33) and a front-back adjusting bolt (34), the tool adjusting support (32) is fixed on a tool supporting plate (38), a horizontal threaded hole is formed in the tool adjusting support (32), the front-back adjusting bolt (34) is installed in the horizontal threaded hole in a threaded mode, and the front-back adjusting bolt (34) penetrates through the horizontal threaded hole and then is connected to the side face of the tool plate (35);

the left and right adjusting assembly comprises a left and right tool adjusting bolt support (100), a left and right tool adjusting bolt (101) and a left and right tool adjusting bolt support bolt, the left and right tool adjusting bolt support (100) is fixed on a tool supporting plate (38), a horizontal threaded hole is formed in the left and right tool adjusting bolt support (100), the left and right tool adjusting bolt (101) is installed in the horizontal threaded hole in a threaded manner, and the left and right tool adjusting bolt (101) penetrates through the horizontal threaded hole and then is connected to the side surface of the tool plate (35); the front and rear adjusting bolts (34) and the tool left and right adjusting bolts (101) are vertically arranged and are respectively connected to two vertical side surfaces of the tool plate (35), and the plane position of the tool plate (35) on the tool supporting plate (38) is adjusted by screwing or screwing the front and rear adjusting bolts (34) and the tool left and right adjusting bolts (101).

8. The scrap iron detecting device for the clamp body sealing groove according to claim 1, characterized in that:

the detection head (10) comprises a measuring head (12), a piston (13), a measuring head spring (14), a measuring head compression spring (15), a measuring head adjusting rod (16), a piston adjusting ring (17), a measuring head adjusting nut (18), a measuring head locknut (19), a piston locknut (23), a piston body fixing nut (24), a piston adjusting nut (25), a piston body (26), a piston spring (27) and a piston shell (28); an installation channel is arranged in the piston shell (28), a piston body (26) is arranged in the head of the installation channel, a piston body fixing nut (24) is arranged in the tail of the installation channel, the piston body fixing nut (24) is installed in a threaded hole in the tail of the installation channel through threads, and the head end face of the piston body fixing nut (24) is connected to the tail end face of the piston body (26) to tightly press the piston body (26) on the step face of the head of the installation channel; the piston body (26) is hollow and is provided with a piston (13), the inner peripheral surface of the head part of the piston body (26) is provided with an inner flange, the outer peripheral surface of the piston (13) close to the head part in the piston body (26) is provided with an outer flange, and the outer flange of the piston (13) is connected to the inner flange of the piston body (26); a piston adjusting nut (25) is sleeved between the tail of the piston (13) and the tail of the piston body (26), the piston adjusting nut (25) is installed in a threaded hole in the tail of the piston body (26) through threads, a piston locknut (23) is installed in a central threaded hole of a piston body fixing nut (24) through threads, and the head end face of the piston locknut (23) is connected to the tail end face of the piston adjusting nut (25) to tightly press the piston adjusting nut (25) on the step face of the inner wall of the tail of the piston body (26); a piston spring (27) and a piston adjusting ring (17) are arranged in an annular gap between a piston body (26) and a piston (13) between a piston adjusting nut (25) and an outer flange of the piston (13), the piston adjusting ring (17) is connected to the end face of the head of the piston adjusting nut (25) in a contact manner, two ends of the piston spring (27) are respectively connected with the outer flange of the piston (13) and the piston adjusting ring (17), and the tail of the piston (13) is in clearance fit with the piston adjusting nut (25);

a cavity is arranged in the piston (13), a measuring head (12), a measuring head adjusting rod (16), a measuring head adjusting nut (18) and a measuring head check nut (19) are sequentially arranged in the cavity from the head to the tail of the piston (13), an inner flange is arranged on the inner peripheral surface of the head of the piston (13), an outer flange is arranged on the outer peripheral surface of the tail end of the measuring head (12) in the piston (13), a measuring head spring (14) is sleeved outside the measuring head (12) in the piston (13), the head end step surface of the outer flange of the measuring head (12) is connected with the inner flange tail end step surface of the piston (13) through the measuring head spring (14), the tail end surface of the outer flange of the measuring head (12) is connected with the head end surface of the measuring head adjusting rod (16) through a measuring head pressing spring (15), and the tail end surface of the measuring head adjusting rod (16) is connected with the head end surface of the measuring head adjusting nut (18); the measuring head adjusting nut (18) is installed in a threaded hole in the tail of the piston (13) through threads, the measuring head check nut (19) is installed in a central threaded hole of the piston (13) through threads, and the head end face of the measuring head check nut (19) is connected to the tail end face of the measuring head adjusting nut (18) to limit the measuring head adjusting nut (18) in the piston (13); an energizing spring (21) is arranged on the measuring head locknut (19), and the energizing spring (21) is arranged in a hole formed in the end face of the measuring head locknut (19) through a wire fixing bolt (22).

9. The scrap iron detecting device for the clamp body sealing groove according to claim 8, wherein:

the measuring head (12), the measuring head compression spring (15), the measuring head adjusting rod (16) and the measuring head adjusting nut (18) are all metal pieces and are electrically connected in sequence, the head end of the measuring head (12) stretches out of scrap iron in the piston (13) and then is used for electrically contacting with scrap iron in the sealing groove, the measuring head adjusting nut (18) is electrically connected with the power-on spring (21), and the power-on spring (21) is electrically connected with the detection line of the first sliding head and the detection line (41) through the signal line (106).

10. The scrap iron detecting device for the clamp body sealing groove according to claim 8, wherein:

an air inlet hole is formed in the outer side wall of the piston shell (28) outside the step face of the inner flange of the piston body (26), the air inlet hole is communicated with the air pipe opening of the measuring rod (31) through an air pipe (107), an annular groove is formed in the outer side wall of the piston body (26) at the step face of the inner flange of the piston body (26), a plurality of air channels are formed in the annular groove at intervals along the circumference and communicated into the gap between the inner flange of the piston body (26) and the outer flange of the piston (13), the gap is communicated with the annular groove through the air channels, and the annular groove is communicated with the air pipe opening of the measuring rod (31) through the air inlet hole.