WO2019024471A1

WO2019024471A1 - Removal and detection mechanism for defective packaging on vacuum packaging line and operation method thereof

Info

Publication number: WO2019024471A1
Application number: PCT/CN2018/074536
Authority: WO
Inventors: 王志强; 曾念勋; 王桂桐; 蔡松华; 蔡荣顺
Original assignee: 漳州佳龙科技股份有限公司
Priority date: 2017-07-31
Filing date: 2018-01-30
Publication date: 2019-02-07
Also published as: CN107284765B; CN107284765A

Abstract

A removal and detection mechanism for defective packaging on a vacuum packaging line and an operation method thereof, wherein the removal mechanism comprises a control module, a conveyor belt (11), a packaging blocking mechanism (10), a positioning and centering mechanism (9) and a packaging retrieval mechanism (2). The packaging blocking mechanism (10) comprises a movable blocking plate (21), and the positioning and centering mechanism (9) comprises centering plates (14, 15). When packaging (12) is blocked by the blocking plate (21) at a blocking position, the centering plates (14, 15) clamp the object packaging and apply a preset clamping force. The packaging retrieval mechanism (2) comprises a torque measuring device, a stroke measuring device, and a grabbing device arranged above a conveying surface of the conveyor belt. A driving mechanism and a packaging-grabbing mechanism are arranged in the grabbing device, and the packaging-grabbing mechanism moves toward a grabbing surface (19) of the packaging (12). If the packaging-grabbing mechanism has not made contact with the grabbing surface within a preset time, the packaging retrieval mechanism (2) determines that the packaging (12) is defective packaging. After the packaging-grabbing mechanism has made contact with the grabbing surface (19), the packaging-grabbing mechanism applies pressure to the grabbing surface (19). If the grabbing surface (19) is deformed to an extent greater than a threshold value, the packaging retrieval mechanism (2) determines that the packaging (12) is defective packaging. The present device can detect and remove packaging without an effective vacuum seal from the conveyor belt.

Description

Vacuum packaging line detection soft bag culling mechanism and working method thereof

Technical field

The invention relates to the field of food packaging, in particular to a vacuum packaging line detection soft bag culling mechanism and a working method thereof.

Background technique

When vacuuming the package, it is necessary to check the vacuum state of the package and then box it. Otherwise, the leaked air and soft package of the vacuum may be loaded into the carton, causing the material to deteriorate during transportation, wasting materials, and affecting Manufacturer reputation.

technical problem

How to detect and eliminate the vacuum-depleted material package on the conveyor belt is a technical problem to be solved by the present invention.

Technical solution

The invention provides a vacuum packaging line detection soft bag culling mechanism and a working method thereof, which can detect and eliminate the vacuum invalid material package on the conveyor belt.

The present invention adopts the following technical solutions.

The vacuum packaging line detecting soft bag culling mechanism and the working method thereof are used for judging and rejecting the vacuum-depleted material package (soft bag) on the vacuum packaging line, and the culling mechanism comprises a control module, a conveyor belt, a gear blocking mechanism, and positioning a centering mechanism and a bag taking mechanism; a belt position at the conveyor belt; the bag mechanism includes a movable bag body, and when the bag body moves to the gear position, the bag body is adjacent to the conveyor belt conveying surface; The positioning centering mechanism comprises a pair of centering plates disposed on opposite sides of the conveying surface of the conveyor belt; when the material package is blocked by the blocking plate, the centering plate clamps the material package and applies a preset clamping force The bag taking mechanism comprises a torque measuring device, a stroke measuring device and a gripping device arranged above the conveying surface of the conveyor belt, wherein the gripping device is provided with a driving mechanism and a grabbing mechanism, and when the centering plate applies force to the material package Afterwards, the grasping mechanism moves to the grasping surface of the material package, and the travel measuring device monitors the moving working condition of the grasping mechanism. When the grasping mechanism does not contact the grasping surface within the preset time threshold range, the picking mechanism determines Material package is The bag capture mechanism presses the gripping surface after contacting the gripping surface, and the bag taking mechanism determines the deformation range of the gripping surface by the maximum stroke after the gripping mechanism is pressed, and the deformation of the gripping surface When the amplitude is greater than the threshold, the picking mechanism determines that the material package is a soft pack; the conveyor belt and the picking mechanism separate the soft pack from the vacuum material pack.

When the bag taking mechanism determines that the material package is a soft bag, the bag body moves out of the conveyor belt conveying surface, and the soft bag is transported to the soft bag concentrated area by the conveyor belt.

The bag capture mechanism comprises a suction cup. When the bag taking mechanism determines that the material package is a hard bag with a normal vacuum state, the bag grabbing mechanism sucks the material package and removes the material package from the conveyor belt.

The torque measuring device is an initial position torque switch disposed above the conveying surface of the conveyor belt. After the material package is clamped and applied by the centering plate, the initial torque measuring switch measures the gripping surface of the material package; The grasping mechanism comprises a suction cup, a vertically arranged detecting cylinder and a vertically arranged electric cylinder, wherein the detecting cylinder and the suction cup are arranged at a driving output end of the electric cylinder; the detecting cylinder is a rod type cylinder at both ends; detecting The cylinder is provided with a contact switch at the lower end of the cylinder rod of the material package, the suction cup is a suction cup that can be compressed by the suction cup; the cylinder rod displacement torque switch is fixed at the upper cylinder rod of the detection cylinder; when the suction cup mouth of the suction cup touches the material package When the surface is maximally compressed, the contact switch is triggered, and the cylinder rod displacement torque switch measures the maximum displacement value of the cylinder rod at the upper end of the cylinder during the pressing process, and uses the displacement value as the maximum after the material is applied by the grasping mechanism. The trip value.

A material bag detecting device is arranged at the gear position of the conveyor belt, and the initial position of the bag body is adjacent to the conveying surface of the conveyor belt. When the material bag reaches the gear position, the control module uses the distance between the bag position and the bag plate. Conveyor speed determines the time when the material package arrives at the shield board; the control module determines the time when the material package arrives at the shield board by the distance between the stop position and the conveyor belt, and when the material package collides with the stop board When the control module controls the conveyor to stop and delay for a period of time, until the picking mechanism completes the material package determination operation or the material package capture operation and resumes operation.

The positioning centering mechanism comprises a centering plate A, a centering plate B, a linear guide rail and a positioning cylinder; the linear guide rail is perpendicular to the conveying direction of the conveyor belt; the centering plate A and the centering plate B are respectively fixed on the linear guide rail On the slider; the centering plate A and the centering plate B are connected by a traction cable which is wound around the pulley; the driving end of the positioning cylinder is connected with the centering plate A or the centering plate B, and when the positioning cylinder driving end moves When the center plate A and the center plate B are close to each other or away from each other, the material package on the conveyor belt is pinched or loosened.

When the soft bag is removed from the conveyor belt by the grasping mechanism, the electric cylinder drives the suction cup to be slowly pressed down until the cylinder rod that has been extended by the detecting cylinder is retracted under the pressure of the electric cylinder, and the retracted state is measured by the displacement of the cylinder rod. The switch monitors, at this time, the contact part of the material package and the suction cup is compacted, the grasping mechanism sucks the material package by the suction cup, and the hard bag whose vacuum is not invalid is sent out by the conveyor belt.

The working method of the culling mechanism is performed by using a culling mechanism, and the working method comprises the following steps in sequence;

A1, the initial position of the shield board is adjacent to the conveyor belt transmission surface, and when the material package reaches the gear position, the control module determines the time when the material package arrives at the shield board by the distance between the gear position and the conveyor belt and the conveyor speed; When the material package collides with the blocking board, the control module controls the conveyor to stop and delay for a period of time. At this time, if the material package is a vacuum failure soft package, the soft package generates the first stage deformation;

A2. The positioning cylinder drives the center plate A and the center plate B to close together, and clamps the material package on the conveyor belt. At this time, if the material package is a soft bag with vacuum failure, the soft bag generates a second stage deformation, and the material is completed. Package positioning

A3, the distance between the lower plane of the suction cup and the detection surface of the initial position moment switch is h, and when the initial position torque switch performs the moment measurement on the material capture surface, the measured moment is detected. The distance H from the surface to the gripping surface of the material package;

A4, the electric cylinder drive detects the displacement of the cylinder down H+h, and then detects the cylinder rod of the cylinder to extend. When the extension action reaches the threshold value, if the contact switch does not touch the material bag gripping surface, the material package is determined as Soft Case;

A5. If the cylinder rod of the detecting cylinder contacts the material bag grabbing surface within a time threshold range, the taking mechanism records the current cylinder rod stroke through the cylinder rod displacement torque switch, and then the cylinder rod continues to extend for a period of time, the control module Then the cylinder rod stroke torque switch is used to record the cylinder rod stroke, and the cylinder rod stroke difference S is calculated twice;

A6. When the vacuum state of the material package is not invalid, the maximum deformation distance when the cylinder rod is pressed is n, then when S is greater than n, the bag taking mechanism determines that the material package is a soft package;

A7. When S is less than or equal to n, the taking mechanism determines that the material package is a hard bag with a normal vacuum state;

A8. The conveyor belt and the bag taking mechanism separate the soft bag from the vacuum material package.

Beneficial effect

It is not necessary to adjust the packaging materials to adapt to different thicknesses during work; the parameters can be flexibly adjusted, the soft and hard packaging materials can be accurately separated, and various packaging materials can be processed as needed; the precision can be precisely controlled, the movement is accurate, the pressure is not crushed, and the packaging is broken. Reduce the material loss rate during the packing process.

DRAWINGS

Figure 1 is a schematic view of the present invention;

Figure 2 is a schematic plan view of the present invention in a plan view;

Figure 3 is a schematic view of the positioning centering mechanism of the present invention;

Figure 4 is another schematic view of the positioning centering mechanism of the present invention;

Figure 5 is a schematic view showing the second stage deformation of the material package during the detection of the present invention;

Figure 6 is a schematic view of the stop mechanism of the present invention;

In the figure: 1-electric cylinder; 2-packing mechanism; 3-suction disc; 4-suction disc mouth; 5-cylinder rod displacement torque switch; 6-detection cylinder; 7-contact switch; 8--initial torque switch; 9-positioning centering mechanism; 10-stop mechanism; 11-conveyor belt; 12-material package; 13-traction cable; 14-centering plate A; 15-centering plate B; 16-pulley; 17-linear guide; 18-positioning cylinder; 19-material bag grabbing surface; 20-material bag detecting device; 21-stop plate.

BEST MODE FOR CARRYING OUT THE INVENTION

As shown in Figure 1-5, the vacuum packaging line detection soft pack rejection mechanism and its working method are used to determine and reject a vacuum-depleted material package (soft package) on a vacuum packaging line, and the rejection mechanism includes a control module. , the conveyor belt 11, the bag mechanism 10, the positioning centering mechanism 9 and the bag taking mechanism 2; the conveyor belt is provided with a gear position; the gear mechanism 10 includes a movable bag plate 21, when the bag plate moves to the block When the bag is in position, the bag panel is adjacent to the conveyor belt conveying surface; the positioning centering mechanism 9 includes the centering plates 14 and 15 disposed in pairs on both sides of the conveying surface of the conveyor belt 11; when the material package is blocked by the blocking plate in the blocking bag In the position, the middle plate clamps the material package and applies a preset clamping force; the bag taking mechanism 2 includes a torque measuring device, a stroke measuring device and a gripping device disposed above the conveying surface of the conveyor belt, the grabbing device The driving mechanism and the grasping mechanism are arranged in the device. After the centering plate applies the force to the material package, the grasping mechanism moves to the grasping surface 19 of the material package 12, and the stroke measuring device monitors the moving working condition of the grasping mechanism. When the capture mechanism fails to contact within the preset time threshold When taking the surface, the bag taking mechanism determines that the material package is a soft bag; the baggapping mechanism applies pressure to the gripping surface after contacting the gripping surface, and the bag taking mechanism 2 determines the maximum stroke after the bagging mechanism presses the pressure The deformation range of the gripping surface, when the deformation amplitude of the gripping surface is greater than the threshold value, the taking mechanism determines that the material package is a soft bag; the conveyor belt and the bag taking mechanism separate the soft bag and the vacuum material bag.

The torque measuring device is an initial position torque switch 8 disposed above the conveying surface of the conveyor belt. After the material package is clamped and applied by the centering plate, the initial torque measuring switch 8 measures the gripping surface of the material package. The gripping mechanism comprises a suction cup 3, a vertically disposed detecting cylinder 6 and a vertically disposed electric cylinder 1, wherein the detecting cylinder 6 and the suction cup 3 are disposed at a driving output end of the electric cylinder; The rod-type cylinder is arranged; the detecting cylinder is provided with a contact switch 7 at the lower end of the cylinder rod of the material package, the suction cup 3 is a suction cup that can be compressed by the suction port 4; and the cylinder rod displacement torque switch 5 is fixed at the upper end of the cylinder. When the suction cup opening 4 of the suction cup touches the material gripping surface and is maximally compressed, the contact switch 7 is triggered, and the cylinder rod displacement torque measuring switch measures the maximum displacement value of the cylinder rod at the upper end of the cylinder during the pressing process, and uses the displacement The value is used as the maximum stroke value after the baggage mechanism applies pressure to the material package.

A material bag detecting device 20 is disposed at the gear position of the conveyor belt, and the initial position of the bag body 21 is adjacent to the conveyor belt transmission surface. When the material package reaches the gear position, the control module is between the gear block position and the bag body plate. The distance and the conveyor speed determine the time when the material package arrives at the baggage board; the control module determines the time when the material bag arrives at the baggage board by the distance between the bag position and the conveyor plate and the conveyor speed, when the material package and the bag board When a collision occurs, the control module controls the conveyor to stop and delay for a period of time until the pick-up mechanism completes the material package determination operation or the material package capture operation and resumes operation.

The positioning centering mechanism 9 includes a centering plate A14, a centering plate B15, a linear guide 17 and a positioning cylinder 18; the linear guide is perpendicular to the conveying direction of the conveyor; the centering plate A and the centering plate B are respectively fixed to On the slider of the linear guide rail; the centering plate A and the centering plate B are connected by a traction cable 13 that is wound around the pulley 16; the driving end of the positioning cylinder 18 is connected to the centering plate A or the centering plate B, When the positioning cylinder driving end moves, the centering plate A and the centering plate B are close to or away from each other, and the material bag on the conveyor belt is pinched or loosened.

In this example, the bag-removing mechanism is disposed at the end of the conveyor belt. When the bag-removing operation is performed, the bag-out plate protrudes upward to block the end of the conveyor belt. When the material package is judged to be a soft bag, the bag-receiving plate is retracted downward, and the bag is softened. It is sent to the skateboard by the conveyor belt and slid to the rear conveying mechanism.

Claims

The vacuum packaging line detecting soft bag culling mechanism and the working method thereof are used for judging and rejecting the vacuum-depleted material package (soft bag) on the vacuum packaging line, wherein the culling mechanism comprises a control module, a conveyor belt, and a block a bag mechanism, a positioning centering mechanism and a bag picking mechanism; a belt stop position is provided at the conveyor belt; the gear bag mechanism includes a movable bag body plate, and the bag body and the conveyor belt are transported when the bag body plate moves to the gear position The positioning centering mechanism includes a centering plate disposed in pairs on both sides of the conveyor belt conveying surface; when the material bag is blocked by the blocking bag, the centering plate clamps the material package and presets Clamping force; the bag taking mechanism comprises a torque measuring device, a stroke measuring device and a gripping device arranged above the conveying surface of the conveyor belt, wherein the gripping device is provided with a driving mechanism and a grabbing mechanism, when the centering plate is opposite to the material After the application of the bag is completed, the grasping mechanism moves to the grasping surface of the material package, and the stroke measuring device monitors the moving working condition of the grasping mechanism. When the grasping mechanism does not contact the grasping surface within the preset time threshold range, Take-up mechanism The material bag is a soft bag; the baggage mechanism applies pressure to the gripping surface after contacting the gripping surface, and the bag taking mechanism determines the deformation range of the gripping surface by the maximum stroke after the bagging mechanism applies pressure, when When the deformation amplitude of the gripping surface is greater than the threshold value, the bag taking mechanism determines that the material package is a soft bag; the conveyor belt and the bag taking mechanism separate the soft bag from the vacuum material bag.
The vacuum packaging line detecting soft bag culling mechanism and the working method thereof according to claim 1, wherein when the bag taking mechanism determines that the material package is a soft bag, the bag body is removed from the conveyor belt conveying surface, and the soft bag is transported to the conveyor belt to the conveyor belt. The soft pack concentrates on the area.
The vacuum packaging line detecting soft bag culling mechanism and the working method thereof according to claim 2, wherein the packet capture mechanism comprises a suction cup, and when the bag taking mechanism determines that the material package is a hard bag with a normal vacuum state, the bag capture The mechanism picks up the material package and moves the material package out of the conveyor.
The vacuum packaging line detecting soft bag culling mechanism and the working method thereof according to claim 1, wherein the torque measuring device is an initial position torque switch disposed above the conveying surface of the conveyor belt, and when the material package is centered After the clamping force is applied, the initial position torque switch performs torque measurement on the gripping surface of the material package; the capturing mechanism includes a suction cup, a vertically disposed detecting cylinder and a vertically disposed electric cylinder, and the detecting cylinder and the detecting cylinder The suction cup is disposed at a driving output end of the electric cylinder; the detecting cylinder is a rod type cylinder at both ends; the detecting cylinder is provided with a contact switch at a cylinder rod of a lower end of the material package, wherein the suction cup is a suction cup that can be compressed by the suction cup; A cylinder rod displacement torque switch is fixed at the upper cylinder rod of the cylinder; when the suction cup mouth of the suction cup touches the material bag gripping surface and is maximally compressed, the contact switch is triggered, and the cylinder rod displacement torque measuring switch measures the cylinder cylinder pressure at the upper end of the cylinder. The maximum displacement value of the package process, and the displacement value is used as the maximum stroke value of the baggage mechanism after applying pressure to the material package.
The vacuum packaging line detecting soft bag culling mechanism and the working method thereof according to claim 4, wherein the conveyor belt is provided with a material packet detecting device at the gear position, and the initial position of the blocking plate is adjacent to the conveying surface of the conveyor belt. When the material package reaches the gear position, the control module determines the time when the material package reaches the blocking board by the distance between the gear position and the speed of the conveyor belt; the control module is between the gear position and the shielding board. The distance and the conveyor speed determine the time when the material package reaches the blocking board. When the material package collides with the blocking board, the control module controls the conveyor to stop and delay for a period of time until the picking mechanism completes the material package determination operation or the material package. Resume the operation after taking the job.
The vacuum packaging line detecting soft bag culling mechanism and the working method thereof according to claim 5, wherein the positioning centering mechanism comprises a centering plate A, a centering plate B, a linear guide rail and a positioning cylinder; The guide rail is perpendicular to the conveying direction of the conveyor belt; the centering plate A and the centering plate B are respectively fixed on the slider of the linear guide; the centering plate A and the centering plate B are connected by a traction cable which is wound around the pulley; The driving end of the positioning cylinder is connected with the centering plate A or the centering plate B. When the positioning cylinder driving end moves, the centering plate A and the centering plate B are close to or away from each other, and the material package on the conveyor belt is pinched or release.
The vacuum packaging line detecting soft bag culling mechanism and the working method thereof according to claim 4, wherein when the soft bag is removed from the conveyor belt by the grasping mechanism, the electric cylinder drives the suction cup to be slowly pressed until the cylinder is detected. The extended cylinder rod is retracted under the pressure of the electric cylinder, and the retracted state is monitored by the cylinder rod displacement torque switch. At this time, the contact portion between the material package and the suction cup is compacted, and the grasping mechanism sucks the material package with the suction cup; The hard bag that has not failed in the vacuum is sent out by the conveyor belt.
The working method of the vacuum packaging line detecting soft packet culling mechanism is characterized in that: the working method adopts the culling mechanism according to claim 5, and the working method comprises the following steps in sequence;

A1, the initial position of the shield board is adjacent to the conveyor belt transmission surface, and when the material package reaches the gear position, the control module determines the time when the material package arrives at the shield board by the distance between the gear position and the conveyor belt and the conveyor speed; When the material package collides with the blocking board, the control module controls the conveyor to stop and delay for a period of time. At this time, if the material package is a vacuum failure soft package, the soft package generates the first stage deformation;

A2. The positioning cylinder drives the center plate A and the center plate B to close together, and clamps the material package on the conveyor belt. At this time, if the material package is a soft bag with vacuum failure, the soft bag generates a second stage deformation, and the material is completed. Package positioning

A3, the distance between the lower plane of the suction cup and the detection surface of the initial position moment switch is h, and when the initial position torque switch performs the moment measurement on the material capture surface, the measured moment is detected. The distance H from the surface to the gripping surface of the material package;

A4, the electric cylinder drive detects the displacement of the cylinder down H+h, and then detects the cylinder rod of the cylinder to extend. When the extension action reaches the threshold value, if the contact switch does not touch the material bag gripping surface, the material package is determined as Soft Case;

A5. If the cylinder rod of the detecting cylinder contacts the material bag grabbing surface within a time threshold range, the taking mechanism records the current cylinder rod stroke through the cylinder rod displacement torque switch, and then the cylinder rod continues to extend for a period of time, the control module Then the cylinder rod stroke torque switch is used to record the cylinder rod stroke, and the cylinder rod stroke difference S is calculated twice;

A6. When the vacuum state of the material package is not invalid, the maximum deformation distance when the cylinder rod is pressed is n, then when S is greater than n, the bag taking mechanism determines that the material package is a soft package;

A7. When S is less than or equal to n, the taking mechanism determines that the material package is a hard bag with a normal vacuum state;

A8. The conveyor belt and the bag taking mechanism separate the soft bag from the vacuum material package.