CN117308733B

CN117308733B - Material lateral dimension detection device

Info

Publication number: CN117308733B
Application number: CN202311604711.5A
Authority: CN
Inventors: 章晓丹; 徐辉; 吴敏
Original assignee: Kern Liebers Taicang Co ltd
Current assignee: Kern Liebers Taicang Co ltd
Priority date: 2023-11-29
Filing date: 2023-11-29
Publication date: 2024-02-13
Anticipated expiration: 2043-11-29
Also published as: CN117308733A

Abstract

The invention provides a material lateral dimension detection device, which comprises a feeding device, wherein a guide slide way is arranged at the front end of the feeding device, corresponding to the feeding direction of the feeding device, the feeding device is used for horizontally conveying a material to be detected to the guide slide way, and the guide slide way is used for guiding the material to be detected to slide down towards the lateral direction; the detection device comprises a first clamping plate and a second clamping plate, a detection separation cavity is arranged between the first clamping plate and the second clamping plate, and the distance between the detection separation cavities is adapted to the lateral qualified size of the material to be detected; the detection device further comprises a control system and an induction sensor in communication connection with the control system, and the induction sensor is arranged on one side of the discharge hole of the detection compartment. The material with lateral dimension exceeding the preset value can be efficiently detected and transferred.

Description

Material lateral dimension detection device

Technical Field

The invention relates to the field of automatic detection equipment for material sizes, in particular to a lateral size detection device for materials.

Background

In an automated production process, product sizes are typically measured to reject out-of-size products. The measurement of the lateral dimension of the material can be directly measured through the ranging sensor, but if the detected material has hollowed-out characteristics in the measurement direction, the ranging sensor cannot be directly used for measurement under the condition that the posture of the material is not accurately positioned. Traditional automated inspection equipment still adopts the mode through pushing down the clamp plate to the material, according to the clamp plate stroke of pushing down in order to calculate the thickness of material, and the limitation of this kind of mode lies in: the lateral elasticity of the detected material is not suitable. The two methods for measuring the size are not particularly suitable for thickness detection of the scroll spring, when the scroll spring is horizontally placed, hollowed features are arranged in the vertical direction, the scroll spring is not suitable for direct measurement by a distance measuring sensor, and the out-of-tolerance of the thickness of the scroll spring is caused by the fact that all rings of the spring are not completely positioned on the same height plane, and deformation can be caused in the thickness direction by adopting a pressing plate pressing and positioning mode, so that the measurement result is inaccurate.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the lateral dimension detection device for the material, which can detect whether the lateral dimension of the material exceeds a preset value, has the characteristic of good adaptability, and is particularly suitable for detecting the thickness of the scroll spring.

In order to achieve the above object, the present invention is realized by the following technical scheme:

a lateral dimension detection device for detecting whether the lateral dimension of a material to be detected is qualified, comprising:

the front end of the feeding device, corresponding to the feeding direction of the feeding device, is provided with a guide slide way, the feeding device is used for horizontally conveying the material to be detected to the guide slide way, and the guide slide way is used for guiding the material to be detected to slide down towards the lateral direction; the detection device comprises a first clamping plate and a second clamping plate, a detection separation cavity is arranged between the first clamping plate and the second clamping plate, and the distance between the detection separation cavities is adapted to the lateral qualified size of the material to be detected; the detection device also comprises a control system and an induction sensor which is in communication connection with the control system, and the induction sensor is arranged at one side of the discharge hole of the detection compartment; the induction sensor is used for detecting whether the material to be detected falls out of the discharge hole of the detection compartment within the preset time so as to judge whether the lateral dimension of the material to be detected is qualified; still include drive assembly, drive assembly is connected with first splint and second splint transmission, works as detection device judges to wait to detect the material and surpass the default, drive assembly is used for driving first splint and second splint and removes to first ejection of compact position to drive first splint and second splint keep away from relatively, in order to realize the material separation that will surpass the default and shift.

Based on the structure, the material lateral dimension detection device is characterized in that: specifically, the control system is provided with a timer, when the feeding device pushes the material to be detected to the guide-falling slideway, the timer starts to count, if the inductive sensor detects that the material to be detected falls out of the detection compartment discharge port within the preset time, the lateral size of the material is judged to be qualified, otherwise, the material is blocked in the detection compartment, and the size is judged to exceed the preset value. It should be noted that, the distance between the detecting compartments and the lateral qualified size of the material to be detected are in loose fit, if the lateral size of the material to be detected exceeds the range, the material to be detected and the detecting compartments are in close fit, which results in that the material to be detected is blocked in the detecting compartments and cannot fall out. It should be noted that, the material to be detected falls out from the discharge hole of the detection compartment, which should be understood as that the material to be detected completely passes through the sensing area of the sensing sensor, that is, the sensing sensor needs to detect in a preset time: from "none" to "have" to "none". If the front end of the material to be detected falls out of the detection compartment, the rear end is clamped in the detection compartment, and the position of the induction sensor detects the material to be detected, but only detects the condition from 'none' to 'none', so that the size of the material is still judged to exceed a preset value. It should be noted that, if the upper limit of the size of the material to be detected completely exceeds the size of the outlet of the detection compartment, the size of the inlet of the detection compartment needs to be increased, that is, the interval size of the detection compartment is wide in inlet and narrow in outlet, and the size of the outlet of the detection compartment is adapted to the lateral qualified size of the material to be detected, so as to ensure that the material to be detected can enter the detection compartment, and the material with the size exceeding the preset value is transferred through the driving assembly.

Further, according to the device for detecting the lateral size of the material, the whole sliding cavity of the guide falling slideway is in an inverted cone shape, and the outlet end of the sliding cavity is matched with the lateral size of the material to be detected. As the priority scheme of this application, wait to detect the material by horizontal pushing fall into guide behind the slide, carry out spacingly through the smooth chamber of guide slide for it can directly fall into after falling out guide and fall the slide and detect the compartment.

Further, a material side direction size detection device, corresponding to detect and separate the chamber exit end and be equipped with spacing fastener, spacing fastener sets up on first splint or second splint, spacing fastener is connected with the drive assembly transmission, works as detection device judges to wait to detect the material size and surpass the default, drive assembly drives spacing fastener and removes to detect and separate the chamber exit position. As the priority scheme of this application, spacing fastener is used for spacing the material, prevents that the material from not removing to first ejection of compact position and falling out at the transfer in-process.

Further, a material side direction size detection device, drive assembly include respectively with first splint, second splint and spacing fastener transmission connection first actuating cylinder, second actuating cylinder and third actuating cylinder, first actuating cylinder is used for driving first splint and promotes the second splint to remove to first ejection of compact position, second actuating cylinder is used for adjusting the interval of first splint and second splint in order to realize first splint and the relative opening and shutting of second splint, third actuating cylinder is used for driving spacing fastener and removes to detection compartment exit position. As a preferred scheme of the application, in a reset state, the third driving cylinder resets the limiting clamping piece to the outer side of the outlet position of the detection compartment, the second driving cylinder resets the second clamping plate to a position corresponding to the lateral dimension of the material to be detected (in a closed state) between the second clamping plate and the first clamping plate, and the first driving cylinder resets the first clamping plate to the side of the detection compartment corresponding to the outlet of the guide falling slideway; when the detection device judges that the size of the material to be detected exceeds a preset value, the third driving cylinder drives the limiting clamping piece to move to block the outlet position of the detection separation cavity, the first driving cylinder pushes the first clamping plate and the second clamping plate to integrally move to the first discharging position, the third driving cylinder drives the limiting clamping piece to reset, the second driving cylinder drives the second clamping plate to move in the direction away from the first clamping plate, and the material falls out of the detection separation cavity.

Further, the driving assembly comprises a fourth driving cylinder, a push plate is arranged on the telescopic assembly of the fourth driving cylinder, the push plate is arranged on one side, away from the second clamping plate, of the first clamping plate, and a push block is arranged on the push plate; a limiting frame is arranged on one side, far away from the second clamping plate, of the first clamping plate, the limiting frame comprises a pulling plate, the pulling plate and the first clamping plate are arranged at intervals, and the pushing block is arranged between the pulling plate and the first clamping plate; the limiting clamping piece comprises a base body, the base body is arranged on one side, far away from the second clamping plate, of the first clamping plate, a clamping head is arranged on one side, close to the first clamping plate, of the base body, a sliding rod is arranged on one side, far away from the first clamping plate, of the base body, the pushing plate is arranged on the sliding rod in a sliding manner, corresponding holes matched with the sliding rod are formed in the pushing plate, a pressure spring is arranged between the base body and the pushing plate, and limiting protruding portions are arranged on the outer sides, corresponding to the pushing plate, of the sliding rod; when the pushing block moves to be attached to the first clamping plate, the clamping head is arranged at the lower end of the discharge hole of the detection separation cavity; when the pushing block moves to be attached to the pulling plate, the clamping head is arranged at the outer side of the discharge hole of the detection separation cavity; the device comprises a first clamping plate, a second clamping plate, a fourth driving cylinder, a first limiting piece and a clamping head, wherein the first limiting piece is fixedly arranged, and the first limiting piece is used for propping the moving seat body to move to the outer side of the detection separation cavity when the fourth driving cylinder pushes the first clamping plate and the second clamping plate to integrally move to a first discharging position. In a resetting state, the push block is attached to the pull plate, and the clamping head is arranged on the outer side of the detection separation cavity; when the transfer size exceeds a preset value, the fourth driving cylinder drives the pushing block to move towards the first clamping plate, and in the process, the pushing plate pushes the pressure spring, the seat body and the clamping head to move towards the detection separation cavity until the clamping head is at the lower end of the discharge hole of the detection separation cavity; after the pushing block is attached to the first clamping plate, the fourth driving cylinder can push the first clamping plate and the second clamping plate to move towards the first discharging position; before moving to the first discharging position, the seat body is abutted with the first limiting piece, so that the clamping head moves to the outer side of the outlet end of the detection separation cavity in the reverse direction, and the bottom of the detection separation cavity is automatically opened.

When resetting from first ejection of compact position, the push pedal reverse movement is to ejector pad and arm-tie laminating, and through arm-tie pulling first splint and second splint whole removal reset, at this in-process, through the effect of pressure spring and spacing convex part to the push pedal for spacing fastener whole is in reset state automatically.

Based on the device, for adopting two actuating cylinders to drive first splint and spacing fastener respectively, this application has realized same effect through a drive arrangement, and has low in manufacturing cost, control is simple, advantage that the reliability is good.

Further, the clamping head is arranged at the center of the base, a pair of guide posts are arranged on the base corresponding to two sides of the clamping head, guide holes corresponding to the guide posts are formed in the first clamping plate and the second clamping plate, the guide posts are arranged in the guide holes in a sliding mode, and the first limiting piece is a push rod corresponding to the pair of guide posts. As the priority scheme of the application, the stability of the movement of the limiting clamping piece can be guaranteed.

Further, the device for detecting the lateral dimension of the material further comprises a clutch mechanism, wherein the clutch mechanism comprises a reset spring connected with the second clamping plate, and the reset spring is used for pressing the second clamping plate towards the first clamping plate; the clutch mechanism further comprises a swing rod, the swing rod is rotatably connected to the second clamping plate, and one end, away from the second clamping plate, of the swing rod is in sliding connection with the first clamping plate; the clutch mechanism further comprises a second limiting piece which is fixedly arranged; when the fourth driving cylinder drives the first clamping plate and the second clamping plate to integrally move to the first discharging position, the second limiting piece can push the swing rod to rotate until the distance between the first clamping plate and the second clamping plate is increased. Based on the device, during the reset state, because reset spring's effect, the laminating of second splint towards first splint, the whole slope setting of pendulum rod, the setting of second locating part is at the front end of pendulum rod towards first ejection of compact position direction of movement. In the process that the fourth driving cylinder drives the first clamping plate and the second clamping plate to integrally move to the first discharging position, the swing rod can swing through the limit of the second limiting piece, so that the second clamping plate is jacked up, and the materials can automatically fall out of the detection separation cavity after being in place. Compared with the mode that an additional air cylinder is used for driving the second clamping plate to be engaged and disengaged, the device has the advantages of being simple in control and good in stability.

Further, in the material lateral dimension detecting device, the rotating connection point of the swing rod is above the sliding track of the swing rod. As the preferential scheme of the application, when the swing rod moves towards the reset direction, the force of the reset spring acting on the swing rod sliding contact point has an oblique downward component force, so that the reset of the swing rod sliding end can be ensured, the swing rod is prevented from moving to the horizontal state to be blocked, and the second clamping plate cannot reset towards the first clamping plate.

The technical scheme can be seen that the invention has the following beneficial effects:

1. the invention provides a material lateral dimension detection device, which is characterized in that when a material to be detected is pushed to a guide-falling slideway by a material feeding device, a timer starts to count, if an inductive sensor detects that the material to be detected falls out of a detection compartment discharge hole within a preset time, the lateral dimension of the material is judged to be qualified, otherwise, the material is blocked in the detection compartment, and the dimension is judged to exceed a preset value. Therefore, whether the lateral dimension of the material exceeds a preset value can be detected, and the method has the characteristic of good adaptability, and particularly can be suitable for detecting the thickness of the spiral spring.

2. The invention provides a material lateral dimension detection device, which can drive the detection device to finish the transfer of materials with dimension exceeding a preset value through one working beat of a fourth driving cylinder, and has the advantages of simple control and high transfer efficiency.

Drawings

FIG. 1 is a diagram illustrating a scroll spring size sensing device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a lateral dimension detecting device for materials according to embodiment 1 of the present application;

FIG. 3 is a schematic diagram of a lateral dimension detecting device for materials according to embodiment 2 of the present application;

fig. 4 is a schematic structural diagram of a device for detecting lateral dimensions of materials in a reset state according to embodiment 2 of the present application;

FIG. 5 is an exploded view of the components of the detection device and the drive device described in example 2 of the present application;

fig. 6 is a schematic structural diagram of a frame in embodiment 2 of the present application;

FIG. 7 is a schematic view of the detecting device shown in FIG. 4 in a state of moving to the left;

FIG. 8 is a schematic view of the detection device shown in FIG. 4 moved to a first discharge position;

FIG. 9 is a front plan view of the wrap spring of embodiments 3 and 4 of the present application;

FIG. 10 is a schematic diagram of step S2 in a method for detecting a minimum clearance of a spiral spring according to embodiment 4 of the present application;

FIG. 11 is a schematic diagram of step S3 in a method for detecting a minimum clearance of a spiral spring according to embodiment 4 of the present application;

FIG. 12 is a schematic diagram of step S4 in a method for detecting a minimum clearance of a spiral spring according to embodiment 4 of the present application;

fig. 13 is a schematic diagram of step S5 in a method for detecting a minimum gap of a spiral spring according to embodiment 4 of the present application.

In the figure: 1-a feed channel; 11-a material distributing table; 12-a second waste discharge port; 13-a second conveying device;

2-a feeding device;

3-guiding and falling slide ways;

4-a detection device; 40-detecting the cell; 41-a first clamping plate; 411-limiting frames; 4111-pulling plate; 412-a chute; 42-a second splint; 43-an inductive sensor; 44-limiting clamping pieces; 441-a base; 442-chuck; 443-sliding bar; 4431-limit protrusions; 444-compression springs; 445-guide post; 45-cushion blocks; 46-a clutch mechanism; 461-return springs; 462-swinging rod; 463-a second stop member; 4631-pressing wheel;

a 5-drive assembly; 51-a first drive cylinder; 52-a second drive cylinder; 53-a third drive cylinder; 54-fourth drive cylinder; 541-pushing plate; 542-push block;

6, a frame body; 61-sliding rails; 62-risers; 621-a first stop;

7-a visual inspection station; 71-a first detection station;

8-volute springs; 81-a first hook portion; 82-second hook portion.

Detailed Description

Example 1

A lateral dimension detection device for detecting whether a lateral dimension of a material to be detected is qualified, which is shown in fig. 1 and 2, and includes:

the feeding device 2 is provided with a guide slide way 3 corresponding to the front end of the feeding direction of the feeding device 2, the feeding device 2 is used for horizontally conveying the material to be detected to the guide slide way 3, and the guide slide way 3 is used for guiding the material to be detected to slide down towards the lateral direction; the detection device 4 comprises a first clamping plate 41 and a second clamping plate 42, a detection separation cavity 40 is arranged between the first clamping plate 41 and the second clamping plate 42, and the distance between the detection separation cavities 40 is adapted to the lateral qualified size of a material to be detected; the detecting device 4 further comprises a control system and an induction sensor 43 in communication connection with the control system, wherein the induction sensor 43 is arranged at one side of a discharge hole of the detecting compartment 40; the induction sensor 43 is used for detecting whether the material to be detected falls out of the discharge hole of the detecting compartment 40 within a preset time period, so as to judge whether the lateral dimension of the material to be detected is qualified; the device is characterized by further comprising a driving assembly 5, wherein the driving assembly 5 is in transmission connection with the first clamping plate 41 and the second clamping plate 42, and when the detecting device 4 judges that the size of a material to be detected exceeds a preset value, the driving assembly 5 is used for driving the first clamping plate 41 and the second clamping plate 42 to move to a first discharging position and driving the first clamping plate 41 and the second clamping plate 42 to be far away relatively so as to separate and transfer the material with the size exceeding the preset value.

Based on the structure, the material lateral dimension detection device is characterized in that: specifically, the control system is provided with a timer, when the feeding device 2 pushes the material to be detected to the guide-falling slideway 3, the timer starts to count, if the inductive sensor 43 detects that the material to be detected falls out from the discharge hole of the detection compartment 40 within the preset time, the lateral dimension of the material is judged to be qualified, otherwise, the material is blocked in the detection compartment 40, and the judgment dimension exceeds the preset value.

Specifically, a sensor can be arranged at the entrance of the guide falling slideway 3 to trigger the timing start, or the starting time of the feeding device 2 can be directly used as the timing start time.

It should be noted that, the distance between the detecting compartments 40 and the lateral qualified size of the material to be detected are in a loose fit relationship, and if the lateral size of the material to be detected exceeds the range, the material to be detected and the detecting compartments 40 are in a close fit relationship, which results in that the material to be detected is blocked in the detecting compartments 40 and cannot fall out. It should be noted that, the material to be detected falls out from the discharge hole of the detecting compartment 40, which should be understood as that the material to be detected completely passes through the sensing area of the sensing sensor 43, that is, the sensing sensor 43 needs to detect within a preset timing time: from "none" to "have" to "none". If the front end of the material to be detected falls out of the detecting compartment 40, the rear end is clamped in the detecting compartment 40, and the position of the inductive sensor 43 detects the material to be detected, but only detects the condition from "none" to "none", so that the size of the material is still judged to exceed the preset value. It should be noted that, if the upper limit of the size of the material to be detected completely exceeds the size of the outlet of the detecting compartment 40, the size of the inlet of the detecting compartment 40 needs to be increased, that is, the size of the gap between the detecting compartments 40 is wide in inlet and narrow in outlet, and the size of the outlet of the detecting compartment 40 is adapted to the lateral qualified size of the material to be detected, so as to ensure that the material to be detected can enter the detecting compartment 40, and the material with the size exceeding the preset value is transferred through the driving assembly 5.

Referring to fig. 2, in this embodiment, a cushion block 45 is disposed between the first clamping plate 41 and the second clamping plate 42, and when the first clamping plate 41 and the second clamping plate 42 are attached to the cushion block 45, the detecting compartment 40 is adapted to the qualified size of the material to be detected. The cushion block 45 is used for limiting the relative position between the first clamping plate 41 and the second clamping plate 42 in the reset state. Specifically, the cushion block 45 is mounted on the first clamping plate 41, and in the reset state, the second clamping plate 42 is pressed on the cushion block 45.

In this embodiment, the device further includes a frame 6, a sliding rail 61 is disposed on the frame 6, and the first clamping plate 41 and the second clamping plate 42 are slidably disposed on the sliding rail 61. Specifically, the sliding rails 61 are guide rods penetrating through the first clamping plate 41 and the second clamping plate 42, the number of the sliding rails 61 is 4, and linear bearings are arranged on the first clamping plate 41 and the second clamping plate 42 corresponding to the sliding rails 61. The frame 6 further includes a pair of risers 62, the slide rails 61 are mounted on the pair of risers 62 at both ends, and the first clamping plate 41 and the second clamping plate 42 are disposed between the pair of risers 62.

In this embodiment, the sliding cavity of the guide-falling slideway 3 is in an inverted cone shape as a whole, and the outlet end of the sliding cavity is adapted to the lateral dimension of the material to be detected. After the material to be detected is horizontally pushed to fall into the guide falling slide way 3, the material to be detected is limited through the sliding cavity of the guide falling slide way 3, so that the material to be detected can directly fall into the detection compartment 40 after falling out of the guide falling slide way 3. Specifically, the material to be detected falls vertically out of the drop chute 3 and into the detection compartment 40. In this embodiment, the detecting compartment 40 extends in a vertical direction.

Referring to fig. 2, in this embodiment, a limiting clamping member 44 is disposed at an outlet end of the detecting compartment 40, where the limiting clamping member 44 is disposed on the first clamping plate 41 or the second clamping plate 42, the limiting clamping member 44 is in transmission connection with the driving assembly 5, and when the detecting device 4 determines that the size of the material to be detected exceeds a preset value, the driving assembly 5 drives the limiting clamping member 44 to move to the outlet position of the detecting compartment 40. The limiting clamping piece 44 is used for limiting materials and preventing the materials from falling out when the materials are not moved to the first discharging position in the transferring process.

In this embodiment, as shown in fig. 2, the driving assembly 5 includes a first driving cylinder 51, a second driving cylinder 52 and a third driving cylinder 53 in driving connection with the first clamping plate 41, the second clamping plate 42 and the limiting clamp 44, where the first driving cylinder 51 is used to drive the first clamping plate 41 and push the second clamping plate 42 to move to the first discharging position, the second driving cylinder 52 is used to adjust the distance between the first clamping plate 41 and the second clamping plate 42 so as to realize the relative opening and closing of the first clamping plate 41 and the second clamping plate 42, and the third driving cylinder 53 is used to drive the limiting clamp 44 to move to the outlet position of the detection compartment 40. In the resetting state, the third driving cylinder 53 resets the limiting clamp 44 to the outside of the outlet position of the detecting compartment 40, the second driving cylinder 52 resets the interval between the second clamping plate 42 and the first clamping plate 41 to adapt to the lateral dimension of the material to be detected (in the closed state), and the first driving cylinder 51 resets the first clamping plate 41 and the detecting compartment 40 to the corresponding outlet side of the guiding and falling slideway 3; when the detecting device 4 determines that the size of the material to be detected exceeds the preset value, the third driving cylinder 53 drives the limiting clamp 44 to move to a position for blocking the outlet of the detecting compartment 40, the first driving cylinder 51 pushes the first clamping plate 41 and the second clamping plate 42 to integrally move to the first discharging position, the third driving cylinder 53 drives the limiting clamp 44 to reset, the second driving cylinder 52 drives the second clamping plate 42 to move in a direction far away from the first clamping plate 41, and the material falls out of the detecting compartment 40. In this embodiment, the fixing component of the third driving cylinder 53 is mounted on the first clamping plate 41, the limiting clamping member 44 is slidably disposed on the first clamping plate 41, the second clamping plate 42 extends to a position opposite to the limiting clamping member 44, and if the material to be detected moves to the position of the limiting clamping member 44 to be clamped, the limiting clamping member 44 can clamp the material to be detected on the second clamping plate 42.

Example 2

This embodiment is an alternative to the drive assembly 5 on the basis of embodiment 1.

Referring to fig. 3 to fig. 5, in particular, in this embodiment, the driving assembly 5 includes a fourth driving cylinder 54, a push plate 541 is disposed on the telescopic assembly of the fourth driving cylinder 54, the push plate 541 is disposed on a side of the first clamping plate 41 away from the second clamping plate 42, and a push block 542 is disposed on the push plate 541; a limiting frame 411 is mounted on one side of the first clamping plate 41 away from the second clamping plate 42, the limiting frame 411 comprises a pull plate 4111, the pull plate 4111 and the first clamping plate 41 are arranged at intervals, and the push block 542 is arranged between the pull plate 4111 and the first clamping plate 41; the limiting clamping piece 44 comprises a base body 441, the base body 441 is arranged on one side, far away from the second clamping plate 42, of the first clamping plate 41, a clamping head 442 is arranged on one side, close to the first clamping plate 41, of the base body 441, a sliding rod 443 is arranged on one side, far away from the first clamping plate 41, of the base body 441, the pushing plate 541 is arranged on the sliding rod 443 in a sliding manner, corresponding through holes matched with the sliding rod 443 are formed in the pushing plate 541, a pressure spring 444 is arranged between the base body 441 and the pushing plate 541, and limiting protrusions 4431 are arranged on the sliding rod 443, corresponding to the outer sides of the pushing plate 541; specifically, the compression spring 444 is sleeved on the sliding rod 443; the limit protrusion 4431 is a nut in threaded connection with the slide bar 443; when the push block 542 moves to be attached to the first clamping plate 41, the clamping head 442 is at the lower end of the discharge port of the detection compartment 40; when the push block 542 moves to be attached to the pull plate 4111, the chuck 442 is outside the discharge port of the detection compartment 40; the first limiting piece 621 is fixedly arranged, and when the fourth driving cylinder 54 pushes the first clamping plate 41 and the second clamping plate 42 to integrally move to the first discharging position, the first limiting piece 621 is used for pushing the seat body 441 to move to the outside of the detection compartment 40 by the clamping head 442.

In the reset state, as shown in fig. 4, the push block 542 is attached to the pull plate 4111, and the chuck 442 is outside the detection compartment 40; when the transfer size exceeds the preset value, the fourth driving cylinder 54 drives the push block 542 to move towards the first clamping plate 41, and in this process, the push plate 541 pushes the compression spring 444, the seat body 441 and the chuck 442 to move towards the detection compartment 40 until the chuck 442 is at the lower end of the discharge port of the detection compartment 40; as shown in fig. 7, when the pushing block 542 is attached to the first clamping plate 41, the fourth driving cylinder 54 can push the first clamping plate 41 and the second clamping plate 42 to move toward the first discharging position; referring to fig. 8, before moving to the first discharging position, the seat body 441 abuts against the first limiting member 621, so that the chuck 442 moves to the outside of the outlet end of the detecting compartment 40 in the opposite direction, thereby realizing automatic opening of the bottom of the detecting compartment 40. When resetting is performed from the first discharging position, the push plate 541 moves reversely until the push block 542 is attached to the pull plate 4111, the pull plate 4111 pulls the first clamping plate 41 and the second clamping plate 42 to integrally move for resetting, and in this process, the pressure spring 444 and the limit protrusion 4431 act on the push plate 541, so that the whole limit clamping piece 44 is automatically in a resetting state. Specifically, a limit stop is disposed on the riser 62 corresponding to the side of the first clamping plate 41 away from the second clamping plate 42, for limiting the reset position of the first clamping plate 41. Based on the device, for adopting two actuating cylinders to drive first splint 41 and spacing fastener 44 respectively, this application has realized same effect through a drive arrangement, and has low in manufacturing cost, control simple, advantage that the reliability is good.

Referring to fig. 5, in this embodiment, the chuck 442 is disposed at the center of the base 441, a pair of guide posts 445 are disposed on the base 441 corresponding to two sides of the chuck 442, guide holes corresponding to the guide posts 445 are disposed on the first clamping plate 41 and the second clamping plate 42, the guide posts 445 are slidably disposed in the guide holes, and the first limiting member 621 is a push rod corresponding to the pair of guide posts 445. The stability of the movement of the limit clip 44 can be ensured. In addition, the limiting frame 411 further includes a pair of guide rods disposed between the pull plate 4111 and the first clamping plate 41, the push block 542 is slidably disposed on the guide rods, the push block 542 and the push plate 541 are fixed by a connecting rod, and the connecting rod is disposed on the pull plate 4111 in a penetrating manner. In addition, the telescopic rod of the fourth driving cylinder 54 is installed at the center of the push plate 541, and the sliding rod 443 and the connecting rod are symmetrically disposed at both sides of the telescopic rod of the fourth driving cylinder 54. The stability of movement can be improved.

As shown in fig. 4 and 5, the present embodiment further includes a clutch mechanism 46, where the clutch mechanism 46 includes a return spring 461 connected to the second clamping plate 42, and the return spring 461 is used to press the second clamping plate 42 toward the first clamping plate 41; the clutch mechanism 46 further comprises a swing rod 462, the swing rod 462 is rotatably connected to the second clamping plate 42, and one end of the swing rod 462 away from the second clamping plate 42 is slidably connected with the first clamping plate 41; the clutch mechanism 46 further comprises a second limiting member 463 fixedly arranged; when the fourth driving cylinder 54 drives the first clamping plate 41 and the second clamping plate 42 to integrally move to the first discharging position, the second limiting member 463 can push the swing rod 462 to rotate until the distance between the first clamping plate 41 and the second clamping plate 42 becomes larger. In this embodiment, the first clamping plate 41 is provided with a chute 412 extending in a vertical direction, a pulley disposed in the chute 412 is disposed at a position corresponding to the swing rod 462, and the swing rod 462 is rotatably connected with the second clamping plate 42. It should be noted that the extending track of the chute 412 cannot be parallel to the moving direction of the first clamping plate 41. The second limiting part 463 is installed on the frame body 6, a pressing wheel 463 is arranged at the front end of the second limiting part 463, and the pressing wheel 463 is abutted to the side face of the swinging rod 462. Specifically, the return spring 461 is a compression spring, and is disposed between the riser 62 and the second clamping plate 42, and the swing rod 462 and the second limiting member 463 are disposed on two sides of the first clamping plate 41 and the second clamping plate 42 in pairs.

Based on the above-mentioned device, in the reset state, as shown in fig. 4, due to the action of the reset spring 461, the second clamping plate 42 is attached to the first clamping plate 41, the swing rod 462 is integrally inclined, and the second limiting member 463 is disposed at the front end of the swing rod 462 in the moving direction towards the first discharging position. In the process of driving the first clamping plate 41 and the second clamping plate 42 to move integrally to the first discharging position by the fourth driving cylinder 54, as shown in fig. 8, the swing rod 462 swings due to the limit of the second limiting member 463, so that the second clamping plate 42 is pushed open, and the materials can automatically fall out of the detecting compartment 40 after being in place. Compared with the mode of driving the second clamping plate 42 to clutch by adopting an additional air cylinder, the device has the advantages of simplicity in control and good stability.

In this embodiment, the rotational connection point of the swing link 462 is above the sliding track of the swing link 462. When the swing rod 462 moves towards the reset direction, the force of the reset spring 461 acting on the sliding contact point of the swing rod 462 has a component force which is obliquely downward, so that the sliding end of the swing rod 462 can be ensured to reset, the swing rod 462 is prevented from being blocked when moving to the horizontal, and the second clamping plate 42 cannot reset towards the first clamping plate 41.

Example 3

Referring to fig. 1, a spiral spring size detection apparatus includes a material lateral size detection apparatus as described in embodiment 1 or 2. Further comprises:

the feeding channel 1, feeding channel 1 feed direction front end is equipped with divides material platform 11, be equipped with elevating gear on dividing the material platform 11, after the material of feeding channel 1 front end was carried to dividing material platform 11, with dividing material platform 11 lifting through elevating gear to realize the isolation of material and rear side material of front end.

Still include vision detection station 7, vision detection station 7 is used for detecting whether the forward size of spiral spring is qualified, vision detection station 7 includes first detection station 71, first detection station 71 sets up in branch material platform 11 one side, guide fall slide 3 sets up in first detection station 71 and keeps away from branch material platform 11 one side, material feeding unit 2 is the actuating cylinder, material feeding unit 2 still is used for pushing the spiral spring to first detection station 71 from branch material platform 11. If the first detecting station 71 determines that the material to be detected is a qualified product, the feeding device 2 continues to push the material to be detected to the guide-falling slideway 3.

The device further comprises a second waste discharge port 12 and a second conveying device 13, wherein the second waste discharge port 12 is arranged on one side of the first detection station 71, and the second conveying device 13 is used for conveying materials with the size exceeding a preset value judged by the first detection station 71 to the second waste discharge port 12.

Based on the device, the forward direction and the lateral direction of the spiral spring can be detected through one piece of equipment, and the detection efficiency can be improved.

Example 4

On the basis of embodiment 3, the first detecting station 71 is configured to detect whether the minimum gap of the spiral spring 8 is acceptable.

In this regard, the present embodiment provides a method for detecting the minimum clearance of the scroll spring, and as shown in fig. 9, the inner end and the outer end of the scroll spring 8 are respectively provided with a first hook 81 and a second hook 82.

When the spiral spring is arranged on a phase regulator of an automobile engine, the opening and closing time of the valve can be controlled according to the rotation speed of the engine, so that the full combustion of gasoline is achieved, and the economical efficiency and the environmental protection performance of fuel are improved. This is extremely demanding with regard to the structural response of the spring element. The minimum clearance of the spiral spring is an index for judging whether the spiral spring is qualified or not.

The method for detecting the minimum gap of the object by adopting the visual detection system comprises the steps of extracting edges at two sides of the gap, arranging discrete points at the edges at two sides, and calculating the distance between the discrete points at two sides to obtain a minimum value so as to obtain the minimum gap. The difficulty in detecting the gap of the spiral spring is that the spiral spring has the characteristic of integral continuous winding, and the integral radial superposition, i.e. the gap and the spring entity are in the form of integral continuous winding and lamination, and no boundary characteristic exists between layers. Therefore, there are at least the following problems: firstly, the discrete points on one side of the gap can be used for calculating the distance with the discrete points of other layers, so that the calculation force is wasted; secondly, it is difficult to distinguish between the thickness of the spring body and the gap between the springs, i.e. it is difficult to determine whether the calculated minimum distance is the thickness of the springs.

The detection method comprises the following steps:

step S1: collecting an image of the top surface of the spiral spring 8, and extracting the edge of the image; the extracted image edges correspond to the edges of the spiral spring 8,

step S2: referring to fig. 10, determining an attitude coordinate system of the scroll spring 8, and parameterizing an image edge under the attitude coordinate system; wherein determining the attitude coordinate system of the scroll spring 8 includes the following steps S2.1-S2.2:

step S2.1: identifying and locating image features corresponding to the first hook 81 and the second hook 82 from the image; because the first hook 81 and the second hook 82 are stable in shape, the difference between the first hook and the second hook is large relative to the scroll spring 8, and the first hook and the second hook are convenient to recognize and position from images.

Step S2.2: extracting a characteristic point A, B from the image characteristic areas of the first hook part 81 and the second hook part 82 respectively, and corresponding line segments where the two characteristic points are located with gesture coordinate axes and gesture coordinate origins;

step S3: as shown in fig. 11, a dividing line is set under the gesture coordinate system, the dividing line divides the image edge into at least 2 areas, the dividing line radially penetrates through the scroll spring 8, and at this time, the image edge of each dividing area presents a group of arc segments arranged at intervals;

step S4: referring to fig. 12, each pair of adjacent arc segments corresponding to the gap of the spiral spring 8 are calibrated; specifically, the outermost arc line and the innermost arc line are eliminated, and then every two adjacent arc line segments in the radial direction are sequentially formed into the arc line segments corresponding to the gap of the spiral spring 8; specifically, the back hook portions of the first hook portion 81 and the second hook portion 82 certainly have no minimum gap, the image edges corresponding to the first hook portion 81 and the second hook portion 82 can be removed first,

step S5: referring to fig. 13, a group of discrete points are taken from the calibrated arc segment, and the distance between each discrete point on the calibrated arc segment and each discrete point of the corresponding arc segment is calculated;

step S6: if the calculated distance between the discrete points is smaller than a preset value, the size is judged to be unqualified, otherwise, the size is judged to be qualified.

It should be noted that: the image features corresponding to the first hook 81 and the second hook 82 are extracted from the image, and identified and positioned from the image, which are basic functions of the existing visual inspection tool, and the specific method is not described in detail.

According to the method, firstly, the attitude coordinate system of the spiral spring is determined, on the basis, radial segmentation of the edge image can be achieved through a preset cutting line, the edge image after radial segmentation is completed, the edge image is a group of arc segments which are arranged at intervals, each pair of arc segments on two sides of a gap are calibrated one by one, then the distance of discrete points between each pair of calibrated arc segments is calculated, and the distance value is compared with a preset value. Thereby accurately judging whether the scroll spring clearance is qualified.

In the embodiment, in step S2.2, the attitude coordinate system is a rectangular coordinate system, the connection line of the feature points is the x-axis, and the directions from a to B are positive directions. Specifically, the midpoint of the line segment AB is taken as the origin of the attitude coordinate system.

In this embodiment, in step S2.2, the feature points a and B are centers of the fitting circles inscribed in the first hook 81 and the second hook 82, respectively.

In general, the end positions of the first hook 81 and the second hook 82 are used as characteristic points, and the deviation of the end position of each spiral spring causes a larger deviation of the generated posture coordinate system of each spiral spring from the actual posture of the spiral spring. In this application, because the position of the whole first hook portion 81 and the second hook portion 82 is relatively stable with the scroll spring 8 body, the position of the circle center of the fitting circle inscribed in the first hook portion 81 and the second hook portion 82 is adopted as the characteristic point, so that the gesture coordinate system generated by each scroll spring can be ensured to be relatively stable. It should be noted that, according to practical experience, especially for the spiral spring applied to the phase regulator of the automobile engine as shown in fig. 9, the position of the minimum gap of the spiral spring can be approximately determined, so that the stability of the attitude coordinate system is improved, the corresponding cutting line is generated, and the positioning range of the minimum gap is reduced, thereby saving calculation force.

It should be noted that: the inscribed fitting circle obtained according to the first hook 81 and the second hook 82 is a basic function of the existing visual inspection tool, and the specific method is not described in detail.

In this embodiment, after determining the attitude coordinate system of the scroll spring 8, calibrating the feature point C corresponding to the position of the inner hole of the scroll spring 8; in this embodiment, the feature point C corresponds to the center of the fitting circle in the inner hole of the spiral spring 8, and may also be preset directly from the gesture coordinate system; the method for taking the discrete points in the step S5 specifically comprises the following steps: the end points of each section of circular arc are connected with the characteristic points C to form included angles, a group of rays penetrating through the characteristic points C are arranged between the included angles at equal intervals, and the intersection points of the rays and the circular arc are discrete points of the section of circular arc.

Based on the method, the uniformity of discrete point extraction can be ensured. In this embodiment, the number of dividing lines in step S3 is 2, which is a ray passing through the feature point C.

In this embodiment, the step S6 further includes the following steps:

step S6.1: comparing the intervals among the discrete points to obtain a minimum interval value, and calibrating a pair of discrete points corresponding to the minimum interval value; specifically, if the distance between the pair of discrete points is smaller than a preset value, judging that the size is unqualified; if the distance between the pair of discrete points is larger than the preset value, executing the step S6.2;

step S6.2: intercepting a pair of arc line areas where the pair of discrete points marked in the step S6.1 are located, re-fetching a group of denser discrete points from the intercepted pair of arc line areas, and calculating the distance between each discrete point on the intercepted arc line and each discrete point of the corresponding arc line; and comparing the obtained spacing with a preset value again to judge whether the size is qualified or not.

Based on the method, the detection precision can be improved. Specifically, the method for intercepting the arc line segments intercepts the preset width at two sides of the corresponding calibration discrete point.

The technical principles of the present invention have been described above in connection with specific embodiments, which are provided for the purpose of explaining the principles of the present invention and are not to be construed as limiting the scope of the present invention in any way. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. A material side direction size detection device, its characterized in that: for detecting whether the lateral dimension of a material to be detected is acceptable, comprising:

the feeding device (2) is provided with a guide-falling slide way (3) corresponding to the front end of the feeding direction of the feeding device (2), the feeding device (2) is used for horizontally conveying the material to be detected to the guide-falling slide way (3), and the guide-falling slide way (3) is used for guiding the material to be detected to slide down towards the lateral direction of the guide-falling slide way;

the detection device (4), the detection device (4) comprises a first clamping plate (41) and a second clamping plate (42), a detection separation cavity (40) is arranged between the first clamping plate (41) and the second clamping plate (42), and the detection separation cavity (40) is provided with a preset interval; the detection device (4) further comprises a control system and an induction sensor (43) which is in communication connection with the control system, and the induction sensor (43) is arranged at one side of a discharge hole of the detection compartment (40); the induction sensor (43) is used for detecting whether the material to be detected falls out of the discharge hole of the detection compartment (40) within the preset time so as to judge whether the lateral dimension of the material to be detected exceeds a preset value;

the device comprises a detection device (4) and is characterized by further comprising a driving assembly (5), wherein the driving assembly (5) is in transmission connection with a first clamping plate (41) and a second clamping plate (42), and when the detection device (4) judges that the material to be detected exceeds a preset value, the driving assembly (5) is used for driving the first clamping plate (41) and the second clamping plate (42) to move to a first discharging position and driving the first clamping plate (41) and the second clamping plate (42) to be relatively far away so as to realize separation and transfer of the material;

a limiting clamping piece (44) is arranged at the outlet end of the detection compartment (40), the limiting clamping piece (44) is arranged on the first clamping plate (41) or the second clamping plate (42), the limiting clamping piece (44) is in transmission connection with the driving component (5), and when the detection device (4) judges that the material to be detected exceeds a preset value, the driving component (5) drives the limiting clamping piece (44) to move to the outlet position of the detection compartment (40);

the driving assembly (5) comprises a fourth driving cylinder (54), a push plate (541) is arranged on the telescopic assembly of the fourth driving cylinder (54), the push plate (541) is arranged on one side, away from the second clamping plate (42), of the first clamping plate (41), and a push block (542) is arranged on the push plate (541);

a limiting frame (411) is arranged on one side, far away from the second clamping plate (42), of the first clamping plate (41), the limiting frame (411) comprises a pull plate (4111), the pull plate (4111) and the first clamping plate (41) are arranged at intervals, and the push block (542) is arranged between the pull plate (4111) and the first clamping plate (41);

the limiting clamping piece (44) comprises a base body (441), the base body (441) is arranged on one side, away from the second clamping plate (42), of the first clamping plate (41), a clamping head (442) is arranged on one side, close to the first clamping plate (41), of the base body (441), a sliding rod (443) is arranged on one side, away from the first clamping plate (41), of the base body (441), the pushing plate (541) is arranged on the sliding rod (443) in a sliding manner, corresponding through holes which are matched with the sliding rod (443) are formed in the pushing plate (541), a pressure spring (444) is arranged between the base body (441) and the pushing plate (541), and limiting convex portions (4431) are arranged on the outer sides, corresponding to the pushing plate (541), of the sliding rod (443). When the pushing block (542) moves to be attached to the first clamping plate (41), the clamping head (442) is arranged at the lower end of the discharge hole of the detection compartment (40); when the push block (542) moves to be attached to the pull plate (4111), the clamping head (442) is arranged outside the discharge hole of the detection compartment (40);

the device further comprises a first limiting piece (621) which is fixedly arranged, and when the fourth driving cylinder (54) pushes the first clamping plate (41) and the second clamping plate (42) to integrally move to a first discharging position, the first limiting piece (621) is used for pushing the seat body (441) to move to the clamping head (442) to be arranged outside the detection separation cavity (40).

2. A device for detecting lateral dimensions of a material according to claim 1, wherein: the whole sliding cavity of the guide falling slide way (3) is in an inverted cone shape, and the outlet end of the sliding cavity is adaptive to the lateral dimension of the material to be detected.

3. A device for detecting lateral dimensions of a material according to claim 1, wherein: the clamping head (442) is arranged at the center of the base body (441), a pair of guide posts (445) are arranged on the base body (441) corresponding to the two sides of the clamping head (442), guide holes corresponding to the guide posts (445) are formed in the first clamping plate (41) and the second clamping plate (42), the guide posts (445) are slidably arranged in the guide holes, and the first limiting piece (621) is a push rod corresponding to the pair of guide posts (445).

4. A device for detecting lateral dimensions of a material according to claim 1, wherein: the clutch mechanism (46) comprises a return spring (461) connected with the second clamping plate (42), and the return spring (461) is used for pressing the second clamping plate (42) towards the first clamping plate (41);

the clutch mechanism (46) further comprises a swing rod (462), the swing rod (462) is rotatably connected to the second clamping plate (42), and one end, far away from the second clamping plate (42), of the swing rod (462) is in sliding connection with the first clamping plate (41); the clutch mechanism (46) further comprises a second limiting piece (463) fixedly arranged; when the fourth driving cylinder (54) drives the first clamping plate (41) and the second clamping plate (42) to integrally move to the first discharging position, the second limiting piece (463) can push the swing rod (462) to rotate until the distance between the first clamping plate (41) and the second clamping plate (42) is increased.

5. The apparatus for detecting lateral dimensions of materials as in claim 4, wherein: the rotational connection point of the swing rod (462) is above the sliding track of the swing rod (462).