阅读说明：本技术 一种棒状物的外观检测设备及其检测方法 (Appearance detection equipment and detection method for rod-shaped object ) 是由 李宏彬 蒋仕飞 杨树青 阚晖 李治 王润 刘飞 耿昭鋆 李佳田 施四龙 陈俊吉 于 2021-01-13 设计创作，主要内容包括：本发明涉及棒状物的外观检测设备及其检测方法。本发明的棒状物的外观检测设备,包括棒状物转动机构、检测组件和动力系统,所述棒状物转动机构周围设置检测组件,所述棒状物转动机构包括传送带、随动辊组和转动驱动装置,所述传送带上设置随动辊组,所述随动辊组由多个随动辊平行设置构成,所述随动辊组与转动驱动装置转动配合,所述传送带连接动力系统。其有益效果是：该检测设备结构简单,能够对棒状物进行全面的外观检测。该检测设备可以在实验室用于复检棒状物的质量,也可以在线检测棒状物的质量,尤其适用于检测烟支。(The invention relates to an appearance detection device of a rod-shaped object and a detection method thereof. The appearance detection equipment for the rod-shaped object comprises a rod-shaped object rotating mechanism, a detection assembly and a power system, wherein the detection assembly is arranged around the rod-shaped object rotating mechanism, the rod-shaped object rotating mechanism comprises a conveying belt, a follow-up roller set and a rotation driving device, the follow-up roller set is arranged on the conveying belt and is formed by arranging a plurality of follow-up rollers in parallel, the follow-up roller set is in rotation fit with the rotation driving device, and the conveying belt is connected with the power system. The beneficial effects are as follows: the detection equipment is simple in structure and capable of comprehensively detecting the appearance of the rod-shaped object. This check out test set can be used for the quality of reinspection stick-shaped thing in the laboratory, also can the on-line measuring stick-shaped thing's quality, is particularly useful for detecting a cigarette.)

1. The appearance detection device for the rod-shaped object comprises a rod-shaped object rotating mechanism, a detection assembly and a power system, and is characterized in that: the detection assembly is arranged around the rod-shaped object rotating mechanism, the rod-shaped object rotating mechanism comprises a conveying belt, a follow-up roller set and a rotation driving device, the follow-up roller set is arranged on the conveying belt and is formed by arranging a plurality of follow-up rollers in parallel, the follow-up roller set is in running fit with the rotation driving device, and the conveying belt is connected with a power system.

2. The appearance inspection apparatus for a rod-like object according to claim 1, wherein: the follower roll comprises a mandrel and a movable roll, the movable roll is arranged on the mandrel through a bearing, a running fit portion is arranged on the movable roll, the running fit portion is in running fit with a running driving device, and the end portion of the mandrel is connected with a conveying belt.

3. The appearance inspection apparatus for a rod-like object according to claim 1, wherein: the detection assembly comprises side detection devices and cylindrical surface detection devices, the side detection devices are arranged on the left side and the right side of the running direction of the rod-shaped object rotating mechanism, and the cylindrical surface detection devices are arranged above the rod-shaped object rotating mechanism.

4. The appearance inspection apparatus for a rod-like object according to claim 3, wherein: the side surface detection device comprises a first detection camera and a second detection camera, and the first detection camera and the second detection camera are respectively arranged at the left side and the right side of the rod-shaped object rotating mechanism; the cylindrical surface detection device comprises a third detection camera, a fourth detection camera and a fifth detection camera, and the third detection camera, the fourth detection camera and the fifth detection camera are sequentially arranged above the rod-shaped object rotating mechanism along the running direction of the rod-shaped object rotating mechanism; and a matching light source is arranged beside each detection camera and is used for illuminating the imaging position of the detection camera.

5. The appearance inspection apparatus for a stick according to claim 1, 2 or 3, wherein: the check out test set still includes the repository, the repository sets up the work initial end at the follow-up roller set, the repository is including storing up cigarette case and adjusting chain, set up the outlet flue on the face of opening, storage cigarette case outlet flue direction about storing up the cigarette case, set up adjusting chain above the outlet flue, adjusting chain and follow-up roller roll cooperation.

6. The appearance inspection apparatus for a rod-like object according to claim 2, wherein: the rotating matching part is a rough roller surface, the rotating driving device is a rubber pad, and the rough roller surface is in friction fit with the rubber pad.

7. The appearance inspection apparatus for a rod-like object according to claim 2, wherein: the rotation matching part is a gear, the rotation driving device is a rack, and the gear is in rotation matching with the rack.

8. The appearance inspection apparatus for a stick according to claim 1, 2 or 3, wherein: the power system comprises a motor, an intermediate transmission assembly and a transmission wheel, the motor drives the intermediate transmission assembly, the tail end of the intermediate transmission assembly drives the transmission wheel, the transmission wheel drives two conveyor belts, the two conveyor belts are arranged in parallel and are respectively connected with two ends of a mandrel of the follower roller, the rotation matching part is arranged in the middle of the follower roller group, and the rotation driving device is arranged below the follower roller group and is in rotation matching with the rotation matching part; the cylinder detection device is arranged above the follow-up roller set, the side detection devices are arranged on two side faces of the follow-up roller set, and the classification recovery device is arranged at the rear end of the detection assembly.

9. The appearance inspection apparatus for a rod-like object according to claim 8, wherein: the classification recycling device comprises a movable baffle, a shield, a waste collection box and a recycling box, wherein the movable baffle is arranged at an outlet of the rod-shaped object rotating mechanism and can be lifted up or put down under the driving of a motor; the shield is disposed at the baffle, and the waste collection tank and the recovery tank are disposed around the baffle.

10. A method for detecting the appearance of a rod-shaped object, which is characterized in that: the rod-shaped object is placed between the adjacent follower rollers and conveyed forwards, the appearance image of the end face of the rod-shaped object is shot by the first detection camera and the second detection camera, the appearance image of the cylindrical surface part of the rod-shaped object is shot by the third detection camera, the rod-shaped object is rotated by the matching of the rotating matching part and the rotating driving device, and the appearance images of other parts of the cylindrical surface of the rod-shaped object are shot by other detection cameras, so that the complete images of the end face and the circumferential surface of the rod-shaped object are obtained.

11. The method for detecting the appearance of a rod-like object according to claim 9, wherein: the method is used for detecting cigarettes, and comprises the steps of firstly, using an adjusting chain to adjust the axial cigarettes, the oblique cigarettes and redundant cigarettes arranged between adjacent follower rollers to a set position;

after the cigarette appearance detection is finished, the cigarettes with appearance defects are removed through the control device and stored in the waste collection box; the cigarettes without appearance defects are conveyed to a recycling bin.

Technical Field

The invention relates to the field of quality control, in particular to appearance detection equipment and a detection method for a rod-shaped object.

Background

With the development and progress of the society, consumers have more and more attentions to the appearance quality of products, and the quality of the appearance quality of the products directly influences the choices of the consumers. Taking a cigarette as an example, in the actual production of the cigarette, due to machine faults, the cigarette is easy to have stain, damaged cigarette paper, penetrated tobacco stems, poorly spliced, printed, offset in printing position, ink pollution and other poor products. The rod-shaped objects such as cigarettes and the like are inevitably shielded in the transmission process, so that all the surfaces cannot be comprehensively detected, unqualified products with appearance defects occasionally flow out of the market, the product sale is influenced, and the brand reputation of products in a cigarette factory is also reduced. With the development of computer software and hardware technology and the improvement of machine vision software and hardware technology, the appearance quality of cigarettes is detected by adopting a machine vision method at present. But the mode of using the camera to detect at present can only set up check out test set in the cigarette machine on-line measuring, and equipment production such as rethread packagine machine sells for the finished product. Even so, part of the finished product cigarette must be extracted from the finished product cigarette for re-inspection. At present, the cigarette appearance quality rechecking can only depend on a manual observation mode, the main effect of manual spot check is a rough evaluation on the overall quality of the batch of products, and the detailed quality condition of the batch of products cannot be completely explained, so that the manual spot check has a great uncertain factor. The reaction capability and the inspection state of each person are also different, and when the quality of the cigarettes is inspected, the wrong inspection and the missed inspection of the cigarettes sometimes occur. Manpower and material resources are wasted, the product quality cannot be guaranteed to be detected completely, the product quality and the economic benefit of an enterprise cannot be guaranteed well, and the product market competitiveness of the enterprise is restrained.

Therefore, it is an object of the present invention to provide an appearance inspection apparatus for a rod-like object and an inspection method thereof, which have a simple structure and can inspect the overall appearance of the rod-like object.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a rod-shaped object appearance detection device and a rod-shaped object appearance detection method, wherein the rod-shaped object appearance detection device is simple in structure and can carry out overall appearance detection on rod-shaped objects. This check out test set can be used for the quality of reinspection stick-shaped thing in the laboratory, also can the on-line measuring stick-shaped thing's quality, is particularly useful for detecting a cigarette.

The invention provides appearance detection equipment for a rod-shaped object, which adopts the technical scheme that:

the appearance detection equipment for the rod-shaped object comprises a rod-shaped object rotating mechanism, a detection assembly and a power system, wherein the detection assembly is arranged around the rod-shaped object rotating mechanism, the rod-shaped object rotating mechanism comprises a conveying belt, a follow-up roller set and a rotation driving device, the conveying belt is provided with the follow-up roller set, the follow-up roller set is formed by arranging a plurality of follow-up rollers in parallel, the follow-up roller set is in running fit with the rotation driving device, and the conveying belt is connected with the power system.

Preferably, the follower roller comprises a mandrel and a movable roller, the movable roller is arranged on the mandrel through a bearing, a rotating matching part is arranged on the movable roller, the rotating matching part is in rotating matching with the rotating driving device, and the end part of the mandrel is connected with the conveying belt.

Preferably, the detection assembly includes a side surface detection device and a cylindrical surface detection device, the side surface detection device is disposed on the left and right sides of the operation direction of the rod rotating mechanism, and the cylindrical surface detection device is disposed above the rod rotating mechanism.

Preferably, the side surface detecting device includes a first detecting camera and a second detecting camera, which are respectively disposed at left and right sides of the rod rotating mechanism; the cylindrical surface detection device comprises a third detection camera, a fourth detection camera and a fifth detection camera, and the third detection camera, the fourth detection camera and the fifth detection camera are sequentially arranged above the rod-shaped object rotating mechanism along the running direction of the rod-shaped object rotating mechanism; and a matching light source is arranged beside each detection camera and is used for illuminating the imaging position of the detection camera.

Preferably, check out test set still includes the repository, the repository sets up the work initial end at the follower roller group, the repository includes storage cigarette case and adjustment chain, set up the outlet on the face of opening, storage cigarette case cigarette outlet direction about the storage cigarette case, set up the adjustment chain above the outlet, the adjustment chain rolls with the follower roller and cooperates.

Preferably, the rotating fit part is a rough roller surface, the rotating driving device is a rubber pad, and the rough roller surface is in friction fit with the rubber pad.

Preferably, the rotation matching part is provided as a gear, the rotation driving device is provided as a rack, and the gear is in rotation matching with the rack.

Preferably, the power system comprises a motor, an intermediate transmission assembly and a transmission wheel, the motor drives the intermediate transmission assembly, the tail end of the intermediate transmission assembly drives the transmission wheel, the transmission wheel drives two conveyor belts which are arranged in parallel, the two conveyor belts are respectively connected with two ends of a mandrel of the follower roller, the rotation matching part is arranged in the middle of the follower roller, and the rotation driving device is arranged below the follower roller and is in rotation matching with the rotation matching part; the cylinder detection device is arranged above the follow-up roller set, the side detection devices are arranged on two side faces of the follow-up roller set, and the classification recovery device is arranged at the rear end of the detection assembly.

Preferably, the classification recycling device comprises a movable baffle, a shield, a waste collection box and a recycling box, the movable baffle is arranged at an outlet of the rod-shaped object rotating mechanism, and the movable baffle can be lifted up or put down under the driving of a motor; the shield is disposed at the baffle, and the waste collection tank and the recovery tank are disposed around the baffle.

A method for detecting the appearance of rod-shaped object includes such steps as putting rod-shaped object between adjacent follower rollers, moving it forward, using the first and the second cameras to take the appearance image of end surface of rod-shaped object, the third camera to take the appearance image of cylindrical surface, rotating the rod-shaped object by the rotation of its matching unit, and using the other cameras to take the appearance images of other cylindrical surfaces of rod-shaped object.

Preferably, the method is used for detecting cigarettes, and the method comprises the steps of firstly, adjusting the cigarettes in the axial direction, the cigarettes in the oblique direction and the cigarettes in the surplus cigarettes arranged between the adjacent follower rollers to set positions by using an adjusting chain;

after the cigarette appearance detection is finished, the cigarettes with appearance defects are removed through the control device and stored in the waste collection box; the cigarettes without appearance defects are conveyed to a recycling bin.

The implementation of the invention comprises the following technical effects:

according to the appearance detection equipment for the rod-shaped objects, the adjusting chain is arranged, when the rod-shaped objects are conveyed on the rod-shaped object rotating mechanism, the transverse cigarettes, the oblique cigarettes and redundant cigarettes arranged between the adjacent follower rollers are adjusted to be arranged between the adjacent follower rollers or in the cigarette placing groove, and only one cigarette is arranged between the adjacent follower rollers or in one cigarette placing groove; and then, more than two cylindrical surface detection cameras are used for shooting the appearance image before the rotation of the rod and the appearance image after the rotation of the rod, so that complete images of the end surface and the circumferential surface of the rod are obtained. The detection equipment is simple in structure and capable of comprehensively detecting the appearance of the rod-shaped object. This check out test set can be used for the quality of reinspection stick-shaped thing in the laboratory, also can the on-line measuring stick-shaped thing's quality, is particularly useful for detecting a cigarette.

Drawings

Fig. 1 is a schematic perspective view of an appearance inspection apparatus for a stick-shaped object according to an embodiment of the present invention.

Fig. 2 is a schematic top view of an appearance inspection apparatus for a rod-shaped object according to an embodiment of the present invention.

Fig. 3 is a schematic view of the cross-sectional structure a-a of fig. 2.

Fig. 4 is a partially enlarged (circled portion in fig. 3) structural view of the rack portion.

Fig. 5 is a schematic perspective view of the follower roller.

In the figure: 10. a rod-like object; 11. a repository; 12. adjusting the chain; 20. a fixed mount; 21. a first detection camera; 22. a second detection camera; 23. a third detection camera; 24. a fourth detection camera; 25. and a fifth detection camera. 30. A rotation fitting portion; 31. a conveyor belt; 32. a driving wheel; 33. a power system; 34. a motor; 35. a side plate; 36. a mandrel; 37. a movable roller; 38. a bearing; 39. a belt mounting hole; 40. a rotation driving device; 41. a rack mount; 50. a movable baffle; 51. a shield; 52. a waste collection bin; 53. and (6) a recycling bin.

Detailed Description

The present invention will be described in detail below with reference to embodiments and drawings, it being noted that the described embodiments are only intended to facilitate the understanding of the present invention, and do not limit it in any way.

Referring to fig. 1, the appearance detection device for a rod-shaped object according to the present embodiment includes a rod-shaped object rotation mechanism, a detection module, and a power system 33, the detection module is disposed around the rod-shaped object rotation mechanism, the rod-shaped object rotation mechanism includes a conveyor belt 31, a follower roller set and a rotation driving device 40, the conveyor belt 31 is provided with the follower roller set, the follower roller set is formed by disposing a plurality of follower rollers in parallel, the follower roller set is rotatably matched with the rotation driving device 40, and the conveyor belt 31 is connected to the power system 33. The stick rotating mechanism is used for rotating the stick 10; the detection assembly comprises a side detection device and a cylindrical surface detection device which are fixed on the fixing frame 20, the side detection device is arranged on the left side and the right side of the running direction of the rod-shaped object rotating mechanism, and the cylindrical surface detection device is arranged above the rod-shaped object rotating mechanism. The side detection device comprises a first detection camera 21 and a second detection camera 22, the first detection camera 21 and the second detection camera 22 are respectively arranged at the left side and the right side of the rod-shaped object rotating mechanism, the cylindrical surface detection device comprises a third detection camera 23, a fourth detection camera 24 and a fifth detection camera 25, the third detection camera 23, the fourth detection camera 24 and the fifth detection camera 25 are sequentially arranged above the rod-shaped object rotating mechanism along the running direction of the rod-shaped object rotating mechanism, a matching light source is arranged beside each detection camera, and the matching light source irradiates the imaging position of the detection camera. The first inspection camera 21, the second inspection camera 22, the third inspection camera 23, the fourth inspection camera 24 and the fifth inspection camera 25 transmit the photographed appearance inspection image to the service processor, which analyzes the appearance defect of the stick 10 and transmits a reject signal of the stick 10 having the appearance defect to the control device, pushing out the defective stick 10 to fall into the waste collection box 52. The service processor can record an appearance defect image of the rod-shaped object 10, and when the appearance defect of the rod-shaped object 10 is detected, the industrial personal computer automatically stores the defect image and can check the defect image in time to help operation and maintenance personnel to control the product quality; the device can automatically and accurately remove cigarettes with defects. The rod 10 to be detected is preferably a cigarette.

Referring to fig. 4 and 5, the follower roller includes a mandrel 36 and a movable roller 37, the movable roller 37 is disposed on the mandrel 36 through a bearing 38, a rotation fitting portion 30 is disposed on the movable roller 37, the rotation fitting portion 30 is rotatably fitted to a rotation driving device 40, an end of the mandrel 36 is connected to the conveyor belt 31, specifically, the mandrel 36 is connected to the conveyor belt 31 through a belt mounting hole 39 at the end, and a plurality of follower rollers are connected to form a follower roller group. Referring to fig. 4 and 5, as an embodiment, the rotation matching portion 30 is a gear, the rotation driving device 40 is a rack, the gear and the rack are in rotation matching, the gear can drive the movable roller 37 to rotate after rotating, so as to drive the rod-shaped object on the follow-up roller group to rotate, and further realize the omnibearing detection, and the rack is fixed on the rack mounting seat 41. The rack transmission structure has the advantage of controlling precision. By setting the meshing distance between the rack and the gear, the stick 10 can be rotated by 1/3 planes at every 120 degrees or by 1/2 planes at every 180 degrees, and the sequential appearance detection can be realized. The mandrel 36 of the follower roller moves along with the conveyor belt 31, the movable roller 37 arranged on the mandrel 36 through the bearing 38 is matched with the rotation driving device 30 and then rotates, the rod-shaped objects between the movable rollers 37 rotate along with the mandrel, and in the rotating process, a camera is used for taking pictures from the upper side of the rod-shaped objects, so that the detection of the camera on the 360-degree circumferential surface of the cigarette is realized. In another embodiment, the rotation engaging portion 30 is configured as a rough roller surface (not shown), and the rotation driving device 40 is configured as a rubber pad, and the rough roller surface is frictionally engaged with the rubber pad to rotate the rod-shaped object.

Referring to fig. 1, the power system includes a motor 34, an intermediate transmission assembly and a transmission wheel 32, the intermediate transmission assembly can be a belt, a chain or a gear, the motor 34 drives the intermediate transmission assembly, the tail end of the intermediate transmission assembly drives the transmission wheel 32, the transmission wheel 32 drives two transmission belts 31, the two transmission belts 31 are arranged in parallel, the two transmission belts 31 are respectively connected with two ends of a mandrel 36 of the follower roller, a rotation matching part 30 is arranged in the middle of the follower roller, and a rotation driving device 40 is arranged below the follower roller and is in rotation matching with the rotation matching part 30; and a cylindrical surface detection device is arranged above the follow-up roller set, side surface detection devices are arranged on two side surfaces of the follow-up roller set, and a classification recovery device is arranged at the rear end of the detection assembly. Referring to fig. 1 and 2, the sorting and recycling device further comprises a movable baffle 50, a shield 51, a waste collection box 52 and a recycling box 53, wherein the movable baffle 50 is arranged at the outlet of the rod-shaped object rotating mechanism, and the movable baffle 50 can be lifted or put down under the driving of the motor 34; the shield 51 is disposed at the baffle, and the waste collection tank 52 and the recovery tank 53 are disposed around the baffle. When there is a defective stick 10, the flapper 50 is lifted and the defective stick 10 falls into the waste collection box 52, and when the stick 10 is detected normally, the flapper 50 is lowered and the stick 10 falls into the recovery box 53. The power system 33 can be driven by an optional motor 34. Side plates 35 are provided on both sides of the stick rotating mechanism.

Referring to fig. 1, the detection device further comprises a storage warehouse 11, the storage warehouse 11 is arranged at the initial working end of the follow-up roller set, the storage warehouse 11 comprises cigarette storage boxes and adjusting chains 12, the cigarette storage boxes are provided with openings at the upper and lower sides, cigarette outlets are formed in the cigarette outlet direction faces of the cigarette storage boxes, the adjusting chains 12 are arranged on the cigarette outlets, the adjusting chains 12 are in rolling fit with the follow-up roller set, and the adjusting chains 12 are used for straightening the rod-shaped objects 10. When the stick 10 is transported on the follower roller group, the sticks 10 may not be all placed in order, and when the stick 10 appears in the lateral direction, the stick 10 appears in the oblique direction, and a plurality of sticks 10 are placed between the adjacent follower rollers, the stick 10 is adjusted to a set position after the stick 10 is stopped by the rolling wheels on the adjusting chain 12. Because only one end of the adjusting chain 12 is movably connected and fixed, the adjusting chain 12 does not excessively press the rod-shaped object 10, so that the rod-shaped object 10 is not damaged.

According to the appearance detection equipment for the rod-shaped object 10, the adjusting chain 12 is arranged, when the rod-shaped object 10 is conveyed on the rod-shaped object rotating mechanism, transverse cigarettes and oblique cigarettes are adjusted between adjacent follower rollers, and only one cigarette is placed between the follower rollers; the appearance image of the end face of the rod 10 is captured by using the end face detection camera, and the appearance image before the rotation of the rod 10 and the appearance image after the rotation are captured by using more than two cylindrical surface detection cameras, so that complete images of the end face and the circumferential surface of the rod 10 are obtained. The detection device has a simple structure and can perform overall appearance detection on the rod-shaped object 10. This check out test set can be used for reinspection stick 10's quality in the laboratory, also can on-line measuring stick 10's quality, is particularly useful for detecting a cigarette.

The embodiment also provides an appearance detection method of the rod-shaped object, which comprises the steps of placing the rod-shaped object 10 between adjacent follower rollers and conveying the rod-shaped object forwards, using the first detection camera 21 and the second detection camera 22 to shoot an appearance image of the end face of the rod-shaped object 10, using the third detection camera 23 to shoot an appearance image of the 1/3 face of the rod-shaped object, matching the rotating matching part 30 with the rotating driving device 40 to rotate the rod-shaped object 10 to the 1/3 face, using the fourth detection camera 24 to shoot an appearance image of the other 1/3 face of the rod-shaped object 10, matching the rotating matching part 30 with the rotating driving device 40 to rotate the rod-shaped object 10 to the 1/3 face, and using the fifth detection camera 25 to shoot an appearance image of the other 1/3 face of the rod-shaped object 10 to obtain a complete image of the end face. For example, in a mode of rotating 180 degrees each time, the detection camera can be used for shooting an appearance image of the 1/2 surface of the bar, the rotating matching part 30 is matched with the rotating driving device 40 to rotate the bar 10 to 1/2 surface, and other detection cameras can be used for shooting appearance images of the other 1/2 surfaces of the bar 10 to obtain complete images of the end surface and the circumferential surface of the bar 10, so that the circumferential surface of the bar can be completely shot by only providing two cylindrical surface detection cameras; of course, 1/4 or 1/5 equally dividing can be performed, which will not be described herein. When the stick 10 is rotated, the stick 10 may be rotated by the rack 40 engaged with the gear 30, or the stick 10 may be rotated by the rough roller surface frictionally engaged with the rubber pad.

The method is used for detecting cigarettes, and comprises the steps of firstly, using an adjusting chain 12 to adjust the axial cigarettes, the oblique cigarettes and redundant cigarettes arranged between adjacent follower rollers to set positions; the cigarettes are positioned between the adjacent follower rollers, and only one cigarette is placed between the adjacent follower rollers; after the appearance detection of the cigarettes is finished, the cigarettes with appearance defects are removed through the control device and stored in the waste collection box 52; cigarettes without appearance defects are stored in the recycle bin 53.

It should be noted that the terms "first", "second" and "third" as may appear in the description of the invention are used for descriptive purposes only and are not intended to have any sequential limiting effect, nor are they to be construed as indicating or implying relative importance.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.